- Remove sym1 driver
- Remove PCI stuff from sym53c8xx_comm.h
- Remove PCI stuff from ncr53c8xx.c
- Remove device_t typedef
- Remove u_int32 and u_int64
- Remove first_host and the_template
- Remove SPARC support (get back to me when someone puts a 720 in a Sparc :-P)
Makefile | 1
NCR_Q720.c | 4
ncr53c8xx.c | 155
ncr53c8xx.h | 12
sym53c8xx.c |14543 -------------------------------------------------------
sym53c8xx.h | 82
sym53c8xx_comm.h | 666 --
sym53c8xx_defs.h | 52
zalon.c | 4
9 files changed, 76 insertions(+), 15443 deletions(-)
Index: drivers/scsi/Makefile
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- drivers/scsi/Makefile 8 Sep 2003 21:42:19 -0000 1.2
+++ drivers/scsi/Makefile 23 Sep 2003 11:50:13 -0000
@@ -81,7 +81,6 @@ obj-$(CONFIG_SCSI_T128) += t128.o
obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o
obj-$(CONFIG_SCSI_DTC3280) += dtc.o
obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
-obj-$(CONFIG_SCSI_SYM53C8XX) += sym53c8xx.o
obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o
obj-$(CONFIG_SCSI_7000FASST) += wd7000.o
Index: drivers/scsi/NCR_Q720.c
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/NCR_Q720.c,v
retrieving revision 1.3
diff -u -p -r1.3 NCR_Q720.c
--- drivers/scsi/NCR_Q720.c 23 Aug 2003 02:46:59 -0000 1.3
+++ drivers/scsi/NCR_Q720.c 22 Sep 2003 18:13:05 -0000
@@ -79,7 +79,7 @@ static int __init
NCR_Q720_probe_one(struct NCR_Q720_private *p, int siop,
int irq, int slot, __u32 paddr, __u32 vaddr)
{
- ncr_device device;
+ struct ncr_device device;
__u8 scsi_id;
static int unit = 0;
__u8 scsr1 = readb(vaddr + NCR_Q720_SCSR_OFFSET + 1);
@@ -96,7 +96,7 @@ NCR_Q720_probe_one(struct NCR_Q720_priva
udelay(10);
version = readb(vaddr + 0x18) >> 4;
- memset(&device, 0, sizeof(ncr_device));
+ memset(&device, 0, sizeof(struct ncr_device));
/* Initialise ncr_device structure with items required by ncr_attach. */
device.chip = q720_chip;
device.chip.revision_id = version;
Index: drivers/scsi/ncr53c8xx.c
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/ncr53c8xx.c,v
retrieving revision 1.5
diff -u -p -r1.5 ncr53c8xx.c
--- drivers/scsi/ncr53c8xx.c 11 Sep 2003 18:50:08 -0000 1.5
+++ drivers/scsi/ncr53c8xx.c 23 Sep 2003 11:45:17 -0000
@@ -124,7 +124,6 @@
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/module.h>
-#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/spinlock.h>
@@ -242,9 +241,9 @@ const char *ncr53c8xx_info (struct Scsi_
** Choose appropriate type for tag bitmap.
*/
#if MAX_TAGS > 32
-typedef u_int64 tagmap_t;
+typedef u64 tagmap_t;
#else
-typedef u_int32 tagmap_t;
+typedef u32 tagmap_t;
#endif
/*
@@ -330,17 +329,6 @@ typedef u_int32 tagmap_t;
#define NCR_SNOOP_TIMEOUT (1000000)
/*
-** Head of list of NCR boards
-**
-** For kernel version < 1.3.70, host is retrieved by its irq level.
-** For later kernels, the internal host control block address
-** (struct ncb) is used as device id parameter of the irq stuff.
-*/
-
-static struct Scsi_Host *first_host = NULL;
-static Scsi_Host_Template *the_template = NULL;
-
-/*
** Other definitions
*/
@@ -663,8 +651,8 @@ struct lcb {
** 64 possible tags.
**----------------------------------------------------------------
*/
- u_int32 jump_ccb_0; /* Default table if no tags */
- u_int32 *jump_ccb; /* Virtual address */
+ u32 jump_ccb_0; /* Default table if no tags */
+ u32 *jump_ccb; /* Virtual address */
/*----------------------------------------------------------------
** CCB queue management.
@@ -756,9 +744,9 @@ struct head {
** The goalpointer points after the last transfer command.
**----------------------------------------------------------------
*/
- u_int32 savep;
- u_int32 lastp;
- u_int32 goalp;
+ u32 savep;
+ u32 lastp;
+ u32 goalp;
/*----------------------------------------------------------------
** Alternate data pointer.
@@ -766,8 +754,8 @@ struct head {
** when the direction is unknown and the device claims data out.
**----------------------------------------------------------------
*/
- u_int32 wlastp;
- u_int32 wgoalp;
+ u32 wlastp;
+ u32 wgoalp;
/*----------------------------------------------------------------
** The virtual address of the ccb containing this header.
@@ -965,7 +953,7 @@ struct ccb {
u_char auto_sense;
ccb_p link_ccb; /* Host adapter CCB chain */
XPT_QUEHEAD link_ccbq; /* Link to unit CCB queue */
- u_int32 startp; /* Initial data pointer */
+ u32 startp; /* Initial data pointer */
u_long magic; /* Free / busy CCB flag */
};
@@ -1064,7 +1052,7 @@ struct ncb {
** General controller parameters and configuration.
**----------------------------------------------------------------
*/
- device_t dev;
+ struct device *dev;
u_short device_id; /* PCI device id */
u_char revision_id; /* PCI device revision id */
u_char bus; /* PCI BUS number */
@@ -1116,7 +1104,7 @@ struct ncb {
*/
u_char msgout[8]; /* Buffer for MESSAGE OUT */
u_char msgin [8]; /* Buffer for MESSAGE IN */
- u_int32 lastmsg; /* Last SCSI message sent */
+ u32 lastmsg; /* Last SCSI message sent */
u_char scratch; /* Scratch for SCSI receive */
/*----------------------------------------------------------------
@@ -3591,7 +3579,7 @@ static int __init ncr_prepare_setting(nc
*/
struct Scsi_Host * __init
-ncr_attach (Scsi_Host_Template *tpnt, int unit, ncr_device *device)
+ncr_attach (Scsi_Host_Template *tpnt, int unit, struct ncr_device *device)
{
struct host_data *host_data;
ncb_p np = 0;
@@ -3616,20 +3604,11 @@ ncr_attach (Scsi_Host_Template *tpnt, in
if(device->differential)
driver_setup.diff_support = device->differential;
- printk(KERN_INFO "ncr53c%s-%d: rev 0x%x on pci bus %d device %d function %d "
-#ifdef __sparc__
- "irq %s\n",
-#else
- "irq %d\n",
-#endif
+ printk(KERN_INFO "ncr53c%s-%d: rev 0x%x on bus %d device %d function %d irq %d\n",
device->chip.name, unit, device->chip.revision_id,
device->slot.bus, (device->slot.device_fn & 0xf8) >> 3,
device->slot.device_fn & 7,
-#ifdef __sparc__
- __irq_itoa(device->slot.irq));
-#else
device->slot.irq);
-#endif
/*
** Allocate host_data structure
@@ -3842,7 +3821,7 @@ ncr_attach (Scsi_Host_Template *tpnt, in
ncr_chip_reset(np, 100);
/*
- ** Now check the cache handling of the pci chipset.
+ ** Now check the cache handling of the chipset.
*/
if (ncr_snooptest (np)) {
@@ -3909,14 +3888,6 @@ ncr_attach (Scsi_Host_Template *tpnt, in
np->order = M_SIMPLE_TAG;
#endif
- /*
- ** Done.
- */
- if (!the_template) {
- the_template = instance->hostt;
- first_host = instance;
- }
-
NCR_UNLOCK_NCB(np, flags);
return instance;
@@ -4263,7 +4234,7 @@ static int ncr_queue_command (ncb_p np,
u_char idmsg, *msgptr;
u_int msglen;
int direction;
- u_int32 lastp, goalp;
+ u32 lastp, goalp;
/*---------------------------------------------
**
@@ -4702,7 +4673,7 @@ static void ncr_start_reset(ncb_p np)
static int ncr_reset_scsi_bus(ncb_p np, int enab_int, int settle_delay)
{
- u_int32 term;
+ u32 term;
int retv = 0;
np->settle_time = ktime_get(settle_delay * HZ);
@@ -6192,7 +6163,7 @@ static void ncr_timeout (ncb_p np)
static void ncr_log_hard_error(ncb_p np, u_short sist, u_char dstat)
{
- u_int32 dsp;
+ u32 dsp;
int script_ofs;
int script_size;
char *script_name;
@@ -6533,11 +6504,11 @@ static int ncr_int_sbmc (ncb_p np)
static int ncr_int_par (ncb_p np)
{
u_char hsts = INB (HS_PRT);
- u_int32 dbc = INL (nc_dbc);
+ u32 dbc = INL (nc_dbc);
u_char sstat1 = INB (nc_sstat1);
int phase = -1;
int msg = -1;
- u_int32 jmp;
+ u32 jmp;
printk("%s: SCSI parity error detected: SCR1=%d DBC=%x SSTAT1=%x\n",
ncr_name(np), hsts, dbc, sstat1);
@@ -6619,15 +6590,15 @@ reset_all:
static void ncr_int_ma (ncb_p np)
{
- u_int32 dbc;
- u_int32 rest;
- u_int32 dsp;
- u_int32 dsa;
- u_int32 nxtdsp;
- u_int32 newtmp;
- u_int32 *vdsp;
- u_int32 oadr, olen;
- u_int32 *tblp;
+ u32 dbc;
+ u32 rest;
+ u32 dsp;
+ u32 dsa;
+ u32 nxtdsp;
+ u32 newtmp;
+ u32 *vdsp;
+ u32 oadr, olen;
+ u32 *tblp;
ncrcmd *newcmd;
u_char cmd, sbcl;
ccb_p cp;
@@ -6710,12 +6681,12 @@ static void ncr_int_ma (ncb_p np)
nxtdsp = 0;
if (dsp > np->p_script &&
dsp <= np->p_script + sizeof(struct script)) {
- vdsp = (u_int32 *)((char*)np->script0 + (dsp-np->p_script-8));
+ vdsp = (u32 *)((char*)np->script0 + (dsp-np->p_script-8));
nxtdsp = dsp;
}
else if (dsp > np->p_scripth &&
dsp <= np->p_scripth + sizeof(struct scripth)) {
- vdsp = (u_int32 *)((char*)np->scripth0 + (dsp-np->p_scripth-8));
+ vdsp = (u32 *)((char*)np->scripth0 + (dsp-np->p_scripth-8));
nxtdsp = dsp;
}
else if (cp) {
@@ -6760,11 +6731,11 @@ static void ncr_int_ma (ncb_p np)
oadr = scr_to_cpu(vdsp[1]);
if (cmd & 0x10) { /* Table indirect */
- tblp = (u_int32 *) ((char*) &cp->phys + oadr);
+ tblp = (u32 *) ((char*) &cp->phys + oadr);
olen = scr_to_cpu(tblp[0]);
oadr = scr_to_cpu(tblp[1]);
} else {
- tblp = (u_int32 *) 0;
+ tblp = (u32 *) 0;
olen = scr_to_cpu(vdsp[0]) & 0xffffff;
};
@@ -6927,7 +6898,7 @@ static void ncr_sir_to_redo(ncb_p np, in
ccb_p cp2;
int disc_cnt = 0;
int busy_cnt = 0;
- u_int32 startp;
+ u32 startp;
u_char s_status = INB (SS_PRT);
/*
@@ -8191,7 +8162,7 @@ static int ncr_scatter(ncb_p np, ccb_p c
/*==========================================================
**
**
-** Test the pci bus snoop logic :-(
+** Test the bus snoop logic :-(
**
** Has to be called with interrupts disabled.
**
@@ -8202,7 +8173,7 @@ static int ncr_scatter(ncb_p np, ccb_p c
#ifndef SCSI_NCR_IOMAPPED
static int __init ncr_regtest (struct ncb* np)
{
- register volatile u_int32 data;
+ register volatile u32 data;
/*
** ncr registers may NOT be cached.
** write 0xffffffff to a read only register area,
@@ -8226,7 +8197,7 @@ static int __init ncr_regtest (struct nc
static int __init ncr_snooptest (struct ncb* np)
{
- u_int32 ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc;
+ u32 ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc;
int i, err=0;
#ifndef SCSI_NCR_IOMAPPED
if (np->reg) {
@@ -9086,18 +9057,9 @@ static int ncr_host_info(ncb_p np, char
copy_info(&info, " Chip NCR53C%s, device id 0x%x, "
"revision id 0x%x\n",
np->chip_name, np->device_id, np->revision_id);
- copy_info(&info, " On PCI bus %d, device %d, function %d, "
-#ifdef __sparc__
- "IRQ %s\n",
-#else
- "IRQ %d\n",
-#endif
+ copy_info(&info, " On PCI bus %d, device %d, function %d, IRQ %d\n",
np->bus, (np->device_fn & 0xf8) >> 3, np->device_fn & 7,
-#ifdef __sparc__
- __irq_itoa(np->irq));
-#else
(int) np->irq);
-#endif
copy_info(&info, " Synchronous period factor %d, "
"max commands per lun %d\n",
(int) np->minsync, MAX_TAGS);
@@ -9178,47 +9140,6 @@ int __init ncr53c8xx_setup(char *str)
#ifndef MODULE
__setup("ncr53c8xx=", ncr53c8xx_setup);
#endif
-
-/*===================================================================
-**
-** SYM53C8XX supported device list
-**
-**===================================================================
-*/
-
-static u_short ncr_chip_ids[] __initdata = {
- PSEUDO_720_ID,
- PCI_DEVICE_ID_NCR_53C810,
- PCI_DEVICE_ID_NCR_53C815,
- PCI_DEVICE_ID_NCR_53C820,
- PCI_DEVICE_ID_NCR_53C825,
- PCI_DEVICE_ID_NCR_53C860,
- PCI_DEVICE_ID_NCR_53C875,
- PCI_DEVICE_ID_NCR_53C875J,
- PCI_DEVICE_ID_NCR_53C885,
- PCI_DEVICE_ID_NCR_53C895,
- PCI_DEVICE_ID_NCR_53C896,
- PCI_DEVICE_ID_NCR_53C895A,
- PCI_DEVICE_ID_NCR_53C1510D
-};
-
-
-/*==========================================================
-**
-** Chip detection entry point.
-**
-**==========================================================
-*/
-int __init ncr53c8xx_detect(Scsi_Host_Template *tpnt)
-{
-#if defined(SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT) && defined(MODULE)
-if (ncr53c8xx)
- ncr53c8xx_setup(ncr53c8xx);
-#endif
-
- return sym53c8xx__detect(tpnt, ncr_chip_ids,
- sizeof(ncr_chip_ids)/sizeof(ncr_chip_ids[0]));
-}
/*==========================================================
**
Index: drivers/scsi/ncr53c8xx.h
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/ncr53c8xx.h,v
retrieving revision 1.1
diff -u -p -r1.1 ncr53c8xx.h
--- drivers/scsi/ncr53c8xx.h 29 Jul 2003 17:01:29 -0000 1.1
+++ drivers/scsi/ncr53c8xx.h 22 Sep 2003 18:12:11 -0000
@@ -42,12 +42,6 @@
#ifndef NCR53C8XX_H
#define NCR53C8XX_H
-/*
-** Define the BSD style u_int32 and u_int64 type.
-** Are in fact u_int32_t and u_int64_t :-)
-*/
-typedef u32 u_int32;
-typedef u64 u_int64;
typedef u_long vm_offset_t;
#include "sym53c8xx_defs.h"
@@ -100,7 +94,7 @@ typedef struct {
**
**==========================================================
*/
-typedef struct {
+struct ncr_device {
struct device *dev;
ncr_slot slot;
ncr_chip chip;
@@ -111,9 +105,9 @@ typedef struct {
#endif
__u8 differential;
int attach_done;
-} ncr_device;
+};
-extern struct Scsi_Host *ncr_attach (Scsi_Host_Template *tpnt, int unit, ncr_device *device);
+extern struct Scsi_Host *ncr_attach (Scsi_Host_Template *tpnt, int unit, struct ncr_device *device);
extern int ncr53c8xx_release(struct Scsi_Host *host);
irqreturn_t ncr53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs);
Index: drivers/scsi/sym53c8xx.c
===================================================================
RCS file: drivers/scsi/sym53c8xx.c
diff -N drivers/scsi/sym53c8xx.c
--- drivers/scsi/sym53c8xx.c 8 Sep 2003 22:00:24 -0000 1.11
+++ /dev/null 1 Jan 1970 00:00:00 -0000
@@ -1,14543 +0,0 @@
-/******************************************************************************
-** High Performance device driver for the Symbios 53C896 controller.
-**
-** Copyright (C) 1998-2001 Gerard Roudier <
[email protected]>
-**
-** This driver also supports all the Symbios 53C8XX controller family,
-** except 53C810 revisions < 16, 53C825 revisions < 16 and all
-** revisions of 53C815 controllers.
-**
-** This driver is based on the Linux port of the FreeBSD ncr driver.
-**
-** Copyright (C) 1994 Wolfgang Stanglmeier
-**
-**-----------------------------------------------------------------------------
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-**-----------------------------------------------------------------------------
-**
-** The Linux port of the FreeBSD ncr driver has been achieved in
-** november 1995 by:
-**
-** Gerard Roudier <
[email protected]>
-**
-** Being given that this driver originates from the FreeBSD version, and
-** in order to keep synergy on both, any suggested enhancements and corrections
-** received on Linux are automatically a potential candidate for the FreeBSD
-** version.
-**
-** The original driver has been written for 386bsd and FreeBSD by
-** Wolfgang Stanglmeier <
[email protected]>
-** Stefan Esser <
[email protected]>
-**
-**-----------------------------------------------------------------------------
-**
-** Major contributions:
-** --------------------
-**
-** NVRAM detection and reading.
-** Copyright (C) 1997 Richard Waltham <
[email protected]>
-**
-*******************************************************************************
-*/
-
-/*
-** Supported SCSI features:
-** Synchronous data transfers
-** Wide16 SCSI BUS
-** Disconnection/Reselection
-** Tagged command queuing
-** SCSI Parity checking
-**
-** Supported NCR/SYMBIOS chips:
-** 53C810A (8 bits, Fast 10, no rom BIOS)
-** 53C825A (Wide, Fast 10, on-board rom BIOS)
-** 53C860 (8 bits, Fast 20, no rom BIOS)
-** 53C875 (Wide, Fast 20, on-board rom BIOS)
-** 53C876 (Wide, Fast 20 Dual, on-board rom BIOS)
-** 53C895 (Wide, Fast 40, on-board rom BIOS)
-** 53C895A (Wide, Fast 40, on-board rom BIOS)
-** 53C896 (Wide, Fast 40 Dual, on-board rom BIOS)
-** 53C897 (Wide, Fast 40 Dual, on-board rom BIOS)
-** 53C1510D (Wide, Fast 40 Dual, on-board rom BIOS)
-** 53C1010 (Wide, Fast 80 Dual, on-board rom BIOS)
-** 53C1010_66(Wide, Fast 80 Dual, on-board rom BIOS, 33/66MHz PCI)
-**
-** Other features:
-** Memory mapped IO
-** Module
-** Shared IRQ
-*/
-
-/*
-** Name and version of the driver
-*/
-#define SCSI_NCR_DRIVER_NAME "sym53c8xx-1.7.3c-20010512"
-
-#define SCSI_NCR_DEBUG_FLAGS (0)
-
-#define NAME53C "sym53c"
-#define NAME53C8XX "sym53c8xx"
-
-/*==========================================================
-**
-** Include files
-**
-**==========================================================
-*/
-
-#include <linux/version.h>
-
-#include <linux/module.h>
-
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/pci.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/time.h>
-#include <linux/timer.h>
-#include <linux/stat.h>
-#include <linux/version.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#ifndef __init
-#define __init
-#endif
-#ifndef __initdata
-#define __initdata
-#endif
-
-#include "scsi.h"
-#include "hosts.h"
-
-#include <linux/types.h>
-
-/*
-** Define BITS_PER_LONG for earlier linux versions.
-*/
-#ifndef BITS_PER_LONG
-#if (~0UL) == 0xffffffffUL
-#define BITS_PER_LONG 32
-#else
-#define BITS_PER_LONG 64
-#endif
-#endif
-
-/*
-** Define the BSD style u_int32 and u_int64 type.
-** Are in fact u_int32_t and u_int64_t :-)
-*/
-typedef u32 u_int32;
-typedef u64 u_int64;
-
-#include "sym53c8xx.h"
-
-/*
-** Donnot compile integrity checking code for Linux-2.3.0
-** and above since SCSI data structures are not ready yet.
-*/
-/* #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) */
-#if 0
-#define SCSI_NCR_INTEGRITY_CHECKING
-#endif
-
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
-
-/*
-** Hmmm... What complex some PCI-HOST bridges actually are,
-** despite the fact that the PCI specifications are looking
-** so smart and simple! ;-)
-*/
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,47)
-#define SCSI_NCR_DYNAMIC_DMA_MAPPING
-#endif
-
-/*==========================================================
-**
-** A la VMS/CAM-3 queue management.
-** Implemented from linux list management.
-**
-**==========================================================
-*/
-
-typedef struct xpt_quehead {
- struct xpt_quehead *flink; /* Forward pointer */
- struct xpt_quehead *blink; /* Backward pointer */
-} XPT_QUEHEAD;
-
-#define xpt_que_init(ptr) do { \
- (ptr)->flink = (ptr); (ptr)->blink = (ptr); \
-} while (0)
-
-static inline void __xpt_que_add(struct xpt_quehead * new,
- struct xpt_quehead * blink,
- struct xpt_quehead * flink)
-{
- flink->blink = new;
- new->flink = flink;
- new->blink = blink;
- blink->flink = new;
-}
-
-static inline void __xpt_que_del(struct xpt_quehead * blink,
- struct xpt_quehead * flink)
-{
- flink->blink = blink;
- blink->flink = flink;
-}
-
-static inline int xpt_que_empty(struct xpt_quehead *head)
-{
- return head->flink == head;
-}
-
-static inline void xpt_que_splice(struct xpt_quehead *list,
- struct xpt_quehead *head)
-{
- struct xpt_quehead *first = list->flink;
-
- if (first != list) {
- struct xpt_quehead *last = list->blink;
- struct xpt_quehead *at = head->flink;
-
- first->blink = head;
- head->flink = first;
-
- last->flink = at;
- at->blink = last;
- }
-}
-
-#define xpt_que_entry(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-
-
-#define xpt_insque(new, pos) __xpt_que_add(new, pos, (pos)->flink)
-
-#define xpt_remque(el) __xpt_que_del((el)->blink, (el)->flink)
-
-#define xpt_insque_head(new, head) __xpt_que_add(new, head, (head)->flink)
-
-static inline struct xpt_quehead *xpt_remque_head(struct xpt_quehead *head)
-{
- struct xpt_quehead *elem = head->flink;
-
- if (elem != head)
- __xpt_que_del(head, elem->flink);
- else
- elem = 0;
- return elem;
-}
-
-#define xpt_insque_tail(new, head) __xpt_que_add(new, (head)->blink, head)
-
-static inline struct xpt_quehead *xpt_remque_tail(struct xpt_quehead *head)
-{
- struct xpt_quehead *elem = head->blink;
-
- if (elem != head)
- __xpt_que_del(elem->blink, head);
- else
- elem = 0;
- return elem;
-}
-
-/*==========================================================
-**
-** Configuration and Debugging
-**
-**==========================================================
-*/
-
-/*
-** SCSI address of this device.
-** The boot routines should have set it.
-** If not, use this.
-*/
-
-#ifndef SCSI_NCR_MYADDR
-#define SCSI_NCR_MYADDR (7)
-#endif
-
-/*
-** The maximum number of tags per logic unit.
-** Used only for devices that support tags.
-*/
-
-#ifndef SCSI_NCR_MAX_TAGS
-#define SCSI_NCR_MAX_TAGS (8)
-#endif
-
-/*
-** TAGS are actually unlimited (256 tags/lun).
-** But Linux only supports 255. :)
-*/
-#if SCSI_NCR_MAX_TAGS > 255
-#define MAX_TAGS 255
-#else
-#define MAX_TAGS SCSI_NCR_MAX_TAGS
-#endif
-
-/*
-** Since the ncr chips only have a 8 bit ALU, we try to be clever
-** about offset calculation in the TASK TABLE per LUN that is an
-** array of DWORDS = 4 bytes.
-*/
-#if MAX_TAGS > (512/4)
-#define MAX_TASKS (1024/4)
-#elif MAX_TAGS > (256/4)
-#define MAX_TASKS (512/4)
-#else
-#define MAX_TASKS (256/4)
-#endif
-
-/*
-** This one means 'NO TAG for this job'
-*/
-#define NO_TAG (256)
-
-/*
-** Number of targets supported by the driver.
-** n permits target numbers 0..n-1.
-** Default is 16, meaning targets #0..#15.
-** #7 .. is myself.
-*/
-
-#ifdef SCSI_NCR_MAX_TARGET
-#define MAX_TARGET (SCSI_NCR_MAX_TARGET)
-#else
-#define MAX_TARGET (16)
-#endif
-
-/*
-** Number of logic units supported by the driver.
-** n enables logic unit numbers 0..n-1.
-** The common SCSI devices require only
-** one lun, so take 1 as the default.
-*/
-
-#ifdef SCSI_NCR_MAX_LUN
-#define MAX_LUN 64
-#else
-#define MAX_LUN (1)
-#endif
-
-/*
-** Asynchronous pre-scaler (ns). Shall be 40 for
-** the SCSI timings to be compliant.
-*/
-
-#ifndef SCSI_NCR_MIN_ASYNC
-#define SCSI_NCR_MIN_ASYNC (40)
-#endif
-
-/*
-** The maximum number of jobs scheduled for starting.
-** We allocate 4 entries more than the value we announce
-** to the SCSI upper layer. Guess why ! :-)
-*/
-
-#ifdef SCSI_NCR_CAN_QUEUE
-#define MAX_START (SCSI_NCR_CAN_QUEUE + 4)
-#else
-#define MAX_START (MAX_TARGET + 7 * MAX_TAGS)
-#endif
-
-/*
-** We donnot want to allocate more than 1 PAGE for the
-** the start queue and the done queue. We hard-code entry
-** size to 8 in order to let cpp do the checking.
-** Allows 512-4=508 pending IOs for i386 but Linux seems for
-** now not able to provide the driver with this amount of IOs.
-*/
-#if MAX_START > PAGE_SIZE/8
-#undef MAX_START
-#define MAX_START (PAGE_SIZE/8)
-#endif
-
-/*
-** The maximum number of segments a transfer is split into.
-** We support up to 127 segments for both read and write.
-*/
-
-#define MAX_SCATTER (SCSI_NCR_MAX_SCATTER)
-#define SCR_SG_SIZE (2)
-
-/*
-** other
-*/
-
-#define NCR_SNOOP_TIMEOUT (1000000)
-
-/*==========================================================
-**
-** Miscallaneous BSDish defines.
-**
-**==========================================================
-*/
-
-#define u_char unsigned char
-#define u_short unsigned short
-#define u_int unsigned int
-#define u_long unsigned long
-
-#ifndef bcopy
-#define bcopy(s, d, n) memcpy((d), (s), (n))
-#endif
-
-#ifndef bzero
-#define bzero(d, n) memset((d), 0, (n))
-#endif
-
-#ifndef offsetof
-#define offsetof(t, m) ((size_t) (&((t *)0)->m))
-#endif
-
-/*
-** Simple Wrapper to kernel PCI bus interface.
-**
-** This wrapper allows to get rid of old kernel PCI interface
-** and still allows to preserve linux-2.0 compatibilty.
-** In fact, it is mostly an incomplete emulation of the new
-** PCI code for pre-2.2 kernels. When kernel-2.0 support
-** will be dropped, we will just have to remove most of this
-** code.
-*/
-
-typedef struct pci_dev *pcidev_t;
-#define PCIDEV_NULL (0)
-#define PciBusNumber(d) (d)->bus->number
-#define PciDeviceFn(d) (d)->devfn
-#define PciVendorId(d) (d)->vendor
-#define PciDeviceId(d) (d)->device
-#define PciIrqLine(d) (d)->irq
-
-static u_long __init
-pci_get_base_cookie(struct pci_dev *pdev, int index)
-{
- u_long base;
-
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,12)
- base = pdev->resource[index].start;
-#else
- base = pdev->base_address[index];
-#if BITS_PER_LONG > 32
- if ((base & 0x7) == 0x4)
- *base |= (((u_long)pdev->base_address[++index]) << 32);
-#endif
-#endif
- return (base & ~0x7ul);
-}
-
-static int __init
-pci_get_base_address(struct pci_dev *pdev, int index, u_long *base)
-{
- u32 tmp;
-#define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
-
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base = tmp;
- ++index;
- if ((tmp & 0x7) == 0x4) {
-#if BITS_PER_LONG > 32
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base |= (((u_long)tmp) << 32);
-#endif
- ++index;
- }
- return index;
-#undef PCI_BAR_OFFSET
-}
-
-/* Does not make sense in earlier kernels */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-#define pci_enable_device(pdev) (0)
-#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,4)
-#define scsi_set_pci_device(inst, pdev) (0)
-#endif
-
-/*==========================================================
-**
-** Debugging tags
-**
-**==========================================================
-*/
-
-#define DEBUG_ALLOC (0x0001)
-#define DEBUG_PHASE (0x0002)
-#define DEBUG_QUEUE (0x0008)
-#define DEBUG_RESULT (0x0010)
-#define DEBUG_POINTER (0x0020)
-#define DEBUG_SCRIPT (0x0040)
-#define DEBUG_TINY (0x0080)
-#define DEBUG_TIMING (0x0100)
-#define DEBUG_NEGO (0x0200)
-#define DEBUG_TAGS (0x0400)
-#define DEBUG_IC (0x0800)
-
-/*
-** Enable/Disable debug messages.
-** Can be changed at runtime too.
-*/
-
-#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
-static int ncr_debug = SCSI_NCR_DEBUG_FLAGS;
- #define DEBUG_FLAGS ncr_debug
-#else
- #define DEBUG_FLAGS SCSI_NCR_DEBUG_FLAGS
-#endif
-
-/*
-** SMP threading.
-**
-** Assuming that SMP systems are generally high end systems and may
-** use several SCSI adapters, we are using one lock per controller
-** instead of some global one. For the moment (linux-2.1.95), driver's
-** entry points are called with the 'io_request_lock' lock held, so:
-** - We are uselessly loosing a couple of micro-seconds to lock the
-** controller data structure.
-** - But the driver is not broken by design for SMP and so can be
-** more resistant to bugs or bad changes in the IO sub-system code.
-** - A small advantage could be that the interrupt code is grained as
-** wished (e.g.: threaded by controller).
-*/
-
-spinlock_t sym53c8xx_lock = SPIN_LOCK_UNLOCKED;
-#define NCR_LOCK_DRIVER(flags) spin_lock_irqsave(&sym53c8xx_lock, flags)
-#define NCR_UNLOCK_DRIVER(flags) spin_unlock_irqrestore(&sym53c8xx_lock,flags)
-
-#define NCR_INIT_LOCK_NCB(np) spin_lock_init(&np->smp_lock);
-#define NCR_LOCK_NCB(np, flags) spin_lock_irqsave(&np->smp_lock, flags)
-#define NCR_UNLOCK_NCB(np, flags) spin_unlock_irqrestore(&np->smp_lock, flags)
-
-#define NCR_LOCK_SCSI_DONE(host, flags) \
- spin_lock_irqsave(((host)->host_lock), flags)
-#define NCR_UNLOCK_SCSI_DONE(host, flags) \
- spin_unlock_irqrestore(((host)->host_lock), flags)
-
-/*
-** Memory mapped IO
-**
-** Since linux-2.1, we must use ioremap() to map the io memory space.
-** iounmap() to unmap it. That allows portability.
-** Linux 1.3.X and 2.0.X allow to remap physical pages addresses greater
-** than the highest physical memory address to kernel virtual pages with
-** vremap() / vfree(). That was not portable but worked with i386
-** architecture.
-*/
-
-#ifdef __sparc__
-# include <asm/irq.h>
-# define memcpy_to_pci(a, b, c) memcpy_toio((a), (b), (c))
-#else /* others */
-# define memcpy_to_pci(a, b, c) memcpy_toio((a), (b), (c))
-#endif
-
-#ifndef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
-static u_long __init remap_pci_mem(u_long base, u_long size)
-{
- u_long page_base = ((u_long) base) & PAGE_MASK;
- u_long page_offs = ((u_long) base) - page_base;
- u_long page_remapped = (u_long) ioremap(page_base, page_offs+size);
-
- return page_remapped? (page_remapped + page_offs) : 0UL;
-}
-
-static void __init unmap_pci_mem(u_long vaddr, u_long size)
-{
- if (vaddr)
- iounmap((void *) (vaddr & PAGE_MASK));
-}
-
-#endif /* not def SCSI_NCR_PCI_MEM_NOT_SUPPORTED */
-
-/*
-** Insert a delay in micro-seconds and milli-seconds.
-** -------------------------------------------------
-** Under Linux, udelay() is restricted to delay < 1 milli-second.
-** In fact, it generally works for up to 1 second delay.
-** Since 2.1.105, the mdelay() function is provided for delays
-** in milli-seconds.
-** Under 2.0 kernels, udelay() is an inline function that is very
-** inaccurate on Pentium processors.
-*/
-
-#define UDELAY udelay
-#define MDELAY mdelay
-
-/*
-** Simple power of two buddy-like allocator
-** ----------------------------------------
-** This simple code is not intended to be fast, but to provide
-** power of 2 aligned memory allocations.
-** Since the SCRIPTS processor only supplies 8 bit arithmetic,
-** this allocator allows simple and fast address calculations
-** from the SCRIPTS code. In addition, cache line alignment
-** is guaranteed for power of 2 cache line size.
-** Enhanced in linux-2.3.44 to provide a memory pool per pcidev
-** to support dynamic dma mapping. (I would have preferred a
-** real bus astraction, btw).
-*/
-
-#define __GetFreePages(flags, order) __get_free_pages(flags, order)
-
-#define MEMO_SHIFT 4 /* 16 bytes minimum memory chunk */
-#if PAGE_SIZE >= 8192
-#define MEMO_PAGE_ORDER 0 /* 1 PAGE maximum */
-#else
-#define MEMO_PAGE_ORDER 1 /* 2 PAGES maximum */
-#endif
-#define MEMO_FREE_UNUSED /* Free unused pages immediately */
-#define MEMO_WARN 1
-#define MEMO_GFP_FLAGS GFP_ATOMIC
-#define MEMO_CLUSTER_SHIFT (PAGE_SHIFT+MEMO_PAGE_ORDER)
-#define MEMO_CLUSTER_SIZE (1UL << MEMO_CLUSTER_SHIFT)
-#define MEMO_CLUSTER_MASK (MEMO_CLUSTER_SIZE-1)
-
-typedef u_long m_addr_t; /* Enough bits to bit-hack addresses */
-typedef pcidev_t m_bush_t; /* Something that addresses DMAable */
-
-typedef struct m_link { /* Link between free memory chunks */
- struct m_link *next;
-} m_link_s;
-
-#ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
-typedef struct m_vtob { /* Virtual to Bus address translation */
- struct m_vtob *next;
- m_addr_t vaddr;
- m_addr_t baddr;
-} m_vtob_s;
-#define VTOB_HASH_SHIFT 5
-#define VTOB_HASH_SIZE (1UL << VTOB_HASH_SHIFT)
-#define VTOB_HASH_MASK (VTOB_HASH_SIZE-1)
-#define VTOB_HASH_CODE(m) \
- ((((m_addr_t) (m)) >> MEMO_CLUSTER_SHIFT) & VTOB_HASH_MASK)
-#endif
-
-typedef struct m_pool { /* Memory pool of a given kind */
-#ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- m_bush_t bush;
- m_addr_t (*getp)(struct m_pool *);
- void (*freep)(struct m_pool *, m_addr_t);
-#define M_GETP() mp->getp(mp)
-#define M_FREEP(p) mp->freep(mp, p)
-#define GetPages() __GetFreePages(MEMO_GFP_FLAGS, MEMO_PAGE_ORDER)
-#define FreePages(p) free_pages(p, MEMO_PAGE_ORDER)
- int nump;
- m_vtob_s *(vtob[VTOB_HASH_SIZE]);
- struct m_pool *next;
-#else
-#define M_GETP() __GetFreePages(MEMO_GFP_FLAGS, MEMO_PAGE_ORDER)
-#define M_FREEP(p) free_pages(p, MEMO_PAGE_ORDER)
-#endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
- struct m_link h[PAGE_SHIFT-MEMO_SHIFT+MEMO_PAGE_ORDER+1];
-} m_pool_s;
-
-static void *___m_alloc(m_pool_s *mp, int size)
-{
- int i = 0;
- int s = (1 << MEMO_SHIFT);
- int j;
- m_addr_t a;
- m_link_s *h = mp->h;
-
- if (size > (PAGE_SIZE << MEMO_PAGE_ORDER))
- return 0;
-
- while (size > s) {
- s <<= 1;
- ++i;
- }
-
- j = i;
- while (!h[j].next) {
- if (s == (PAGE_SIZE << MEMO_PAGE_ORDER)) {
- h[j].next = (m_link_s *) M_GETP();
- if (h[j].next)
- h[j].next->next = 0;
- break;
- }
- ++j;
- s <<= 1;
- }
- a = (m_addr_t) h[j].next;
- if (a) {
- h[j].next = h[j].next->next;
- while (j > i) {
- j -= 1;
- s >>= 1;
- h[j].next = (m_link_s *) (a+s);
- h[j].next->next = 0;
- }
- }
-#ifdef DEBUG
- printk("___m_alloc(%d) = %p\n", size, (void *) a);
-#endif
- return (void *) a;
-}
-
-static void ___m_free(m_pool_s *mp, void *ptr, int size)
-{
- int i = 0;
- int s = (1 << MEMO_SHIFT);
- m_link_s *q;
- m_addr_t a, b;
- m_link_s *h = mp->h;
-
-#ifdef DEBUG
- printk("___m_free(%p, %d)\n", ptr, size);
-#endif
-
- if (size > (PAGE_SIZE << MEMO_PAGE_ORDER))
- return;
-
- while (size > s) {
- s <<= 1;
- ++i;
- }
-
- a = (m_addr_t) ptr;
-
- while (1) {
-#ifdef MEMO_FREE_UNUSED
- if (s == (PAGE_SIZE << MEMO_PAGE_ORDER)) {
- M_FREEP(a);
- break;
- }
-#endif
- b = a ^ s;
- q = &h[i];
- while (q->next && q->next != (m_link_s *) b) {
- q = q->next;
- }
- if (!q->next) {
- ((m_link_s *) a)->next = h[i].next;
- h[i].next = (m_link_s *) a;
- break;
- }
- q->next = q->next->next;
- a = a & b;
- s <<= 1;
- ++i;
- }
-}
-
-static void *__m_calloc2(m_pool_s *mp, int size, char *name, int uflags)
-{
- void *p;
-
- p = ___m_alloc(mp, size);
-
- if (DEBUG_FLAGS & DEBUG_ALLOC)
- printk ("new %-10s[%4d] @%p.\n", name, size, p);
-
- if (p)
- bzero(p, size);
- else if (uflags & MEMO_WARN)
- printk (NAME53C8XX ": failed to allocate %s[%d]\n", name, size);
-
- return p;
-}
-
-#define __m_calloc(mp, s, n) __m_calloc2(mp, s, n, MEMO_WARN)
-
-static void __m_free(m_pool_s *mp, void *ptr, int size, char *name)
-{
- if (DEBUG_FLAGS & DEBUG_ALLOC)
- printk ("freeing %-10s[%4d] @%p.\n", name, size, ptr);
-
- ___m_free(mp, ptr, size);
-
-}
-
-/*
- * With pci bus iommu support, we use a default pool of unmapped memory
- * for memory we donnot need to DMA from/to and one pool per pcidev for
- * memory accessed by the PCI chip. `mp0' is the default not DMAable pool.
- */
-
-#ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
-
-static m_pool_s mp0;
-
-#else
-
-static m_addr_t ___mp0_getp(m_pool_s *mp)
-{
- m_addr_t m = GetPages();
- if (m)
- ++mp->nump;
- return m;
-}
-
-static void ___mp0_freep(m_pool_s *mp, m_addr_t m)
-{
- FreePages(m);
- --mp->nump;
-}
-
-static m_pool_s mp0 = {0, ___mp0_getp, ___mp0_freep};
-
-#endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
-
-static void *m_calloc(int size, char *name)
-{
- u_long flags;
- void *m;
- NCR_LOCK_DRIVER(flags);
- m = __m_calloc(&mp0, size, name);
- NCR_UNLOCK_DRIVER(flags);
- return m;
-}
-
-static void m_free(void *ptr, int size, char *name)
-{
- u_long flags;
- NCR_LOCK_DRIVER(flags);
- __m_free(&mp0, ptr, size, name);
- NCR_UNLOCK_DRIVER(flags);
-}
-
-/*
- * DMAable pools.
- */
-
-#ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
-
-/* Without pci bus iommu support, all the memory is assumed DMAable */
-
-#define __m_calloc_dma(b, s, n) m_calloc(s, n)
-#define __m_free_dma(b, p, s, n) m_free(p, s, n)
-#define __vtobus(b, p) virt_to_bus(p)
-
-#else
-
-/*
- * With pci bus iommu support, we maintain one pool per pcidev and a
- * hashed reverse table for virtual to bus physical address translations.
- */
-static m_addr_t ___dma_getp(m_pool_s *mp)
-{
- m_addr_t vp;
- m_vtob_s *vbp;
-
- vbp = __m_calloc(&mp0, sizeof(*vbp), "VTOB");
- if (vbp) {
- dma_addr_t daddr;
- vp = (m_addr_t) pci_alloc_consistent(mp->bush,
- PAGE_SIZE<<MEMO_PAGE_ORDER,
- &daddr);
- if (vp) {
- int hc = VTOB_HASH_CODE(vp);
- vbp->vaddr = vp;
- vbp->baddr = daddr;
- vbp->next = mp->vtob[hc];
- mp->vtob[hc] = vbp;
- ++mp->nump;
- return vp;
- }
- else
- __m_free(&mp0, vbp, sizeof(*vbp), "VTOB");
- }
- return 0;
-}
-
-static void ___dma_freep(m_pool_s *mp, m_addr_t m)
-{
- m_vtob_s **vbpp, *vbp;
- int hc = VTOB_HASH_CODE(m);
-
- vbpp = &mp->vtob[hc];
- while (*vbpp && (*vbpp)->vaddr != m)
- vbpp = &(*vbpp)->next;
- if (*vbpp) {
- vbp = *vbpp;
- *vbpp = (*vbpp)->next;
- pci_free_consistent(mp->bush, PAGE_SIZE<<MEMO_PAGE_ORDER,
- (void *)vbp->vaddr, (dma_addr_t)vbp->baddr);
- __m_free(&mp0, vbp, sizeof(*vbp), "VTOB");
- --mp->nump;
- }
-}
-
-static inline m_pool_s *___get_dma_pool(m_bush_t bush)
-{
- m_pool_s *mp;
- for (mp = mp0.next; mp && mp->bush != bush; mp = mp->next);
- return mp;
-}
-
-static m_pool_s *___cre_dma_pool(m_bush_t bush)
-{
- m_pool_s *mp;
- mp = __m_calloc(&mp0, sizeof(*mp), "MPOOL");
- if (mp) {
- bzero(mp, sizeof(*mp));
- mp->bush = bush;
- mp->getp = ___dma_getp;
- mp->freep = ___dma_freep;
- mp->next = mp0.next;
- mp0.next = mp;
- }
- return mp;
-}
-
-static void ___del_dma_pool(m_pool_s *p)
-{
- struct m_pool **pp = &mp0.next;
-
- while (*pp && *pp != p)
- pp = &(*pp)->next;
- if (*pp) {
- *pp = (*pp)->next;
- __m_free(&mp0, p, sizeof(*p), "MPOOL");
- }
-}
-
-static void *__m_calloc_dma(m_bush_t bush, int size, char *name)
-{
- u_long flags;
- struct m_pool *mp;
- void *m = 0;
-
- NCR_LOCK_DRIVER(flags);
- mp = ___get_dma_pool(bush);
- if (!mp)
- mp = ___cre_dma_pool(bush);
- if (mp)
- m = __m_calloc(mp, size, name);
- if (mp && !mp->nump)
- ___del_dma_pool(mp);
- NCR_UNLOCK_DRIVER(flags);
-
- return m;
-}
-
-static void __m_free_dma(m_bush_t bush, void *m, int size, char *name)
-{
- u_long flags;
- struct m_pool *mp;
-
- NCR_LOCK_DRIVER(flags);
- mp = ___get_dma_pool(bush);
- if (mp)
- __m_free(mp, m, size, name);
- if (mp && !mp->nump)
- ___del_dma_pool(mp);
- NCR_UNLOCK_DRIVER(flags);
-}
-
-static m_addr_t __vtobus(m_bush_t bush, void *m)
-{
- u_long flags;
- m_pool_s *mp;
- int hc = VTOB_HASH_CODE(m);
- m_vtob_s *vp = 0;
- m_addr_t a = ((m_addr_t) m) & ~MEMO_CLUSTER_MASK;
-
- NCR_LOCK_DRIVER(flags);
- mp = ___get_dma_pool(bush);
- if (mp) {
- vp = mp->vtob[hc];
- while (vp && (m_addr_t) vp->vaddr != a)
- vp = vp->next;
- }
- NCR_UNLOCK_DRIVER(flags);
- return vp ? vp->baddr + (((m_addr_t) m) - a) : 0;
-}
-
-#endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
-
-#define _m_calloc_dma(np, s, n) __m_calloc_dma(np->pdev, s, n)
-#define _m_free_dma(np, p, s, n) __m_free_dma(np->pdev, p, s, n)
-#define m_calloc_dma(s, n) _m_calloc_dma(np, s, n)
-#define m_free_dma(p, s, n) _m_free_dma(np, p, s, n)
-#define _vtobus(np, p) __vtobus(np->pdev, p)
-#define vtobus(p) _vtobus(np, p)
-
-/*
- * Deal with DMA mapping/unmapping.
- */
-
-#ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
-
-/* Linux versions prior to pci bus iommu kernel interface */
-
-#define __unmap_scsi_data(pdev, cmd) do {; } while (0)
-#define __map_scsi_single_data(pdev, cmd) (__vtobus(pdev,(cmd)->request_buffer))
-#define __map_scsi_sg_data(pdev, cmd) ((cmd)->use_sg)
-#define __sync_scsi_data(pdev, cmd) do {; } while (0)
-
-#define scsi_sg_dma_address(sc) vtobus((sc)->address)
-#define scsi_sg_dma_len(sc) ((sc)->length)
-
-#else
-
-/* Linux version with pci bus iommu kernel interface */
-
-/* To keep track of the dma mapping (sg/single) that has been set */
-#define __data_mapped(cmd) (cmd)->SCp.phase
-#define __data_mapping(cmd) (cmd)->SCp.dma_handle
-
-static void __unmap_scsi_data(pcidev_t pdev, Scsi_Cmnd *cmd)
-{
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
-
- switch(__data_mapped(cmd)) {
- case 2:
- pci_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- pci_unmap_page(pdev, __data_mapping(cmd),
- cmd->request_bufflen, dma_dir);
- break;
- }
- __data_mapped(cmd) = 0;
-}
-
-static dma_addr_t __map_scsi_single_data(pcidev_t pdev, Scsi_Cmnd *cmd)
-{
- dma_addr_t mapping;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
-
- if (cmd->request_bufflen == 0)
- return 0;
-
- mapping = pci_map_page(pdev,
- virt_to_page(cmd->request_buffer),
- offset_in_page(cmd->request_buffer),
- cmd->request_bufflen, dma_dir);
- __data_mapped(cmd) = 1;
- __data_mapping(cmd) = mapping;
-
- return mapping;
-}
-
-static int __map_scsi_sg_data(pcidev_t pdev, Scsi_Cmnd *cmd)
-{
- int use_sg;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
-
- if (cmd->use_sg == 0)
- return 0;
-
- use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- __data_mapped(cmd) = 2;
- __data_mapping(cmd) = use_sg;
-
- return use_sg;
-}
-
-static void __sync_scsi_data(pcidev_t pdev, Scsi_Cmnd *cmd)
-{
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
-
- switch(__data_mapped(cmd)) {
- case 2:
- pci_dma_sync_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- pci_dma_sync_single(pdev, __data_mapping(cmd),
- cmd->request_bufflen, dma_dir);
- break;
- }
-}
-
-#define scsi_sg_dma_address(sc) sg_dma_address(sc)
-#define scsi_sg_dma_len(sc) sg_dma_len(sc)
-
-#endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
-
-#define unmap_scsi_data(np, cmd) __unmap_scsi_data(np->pdev, cmd)
-#define map_scsi_single_data(np, cmd) __map_scsi_single_data(np->pdev, cmd)
-#define map_scsi_sg_data(np, cmd) __map_scsi_sg_data(np->pdev, cmd)
-#define sync_scsi_data(np, cmd) __sync_scsi_data(np->pdev, cmd)
-
-
-/*
- * Print out some buffer.
- */
-static void ncr_print_hex(u_char *p, int n)
-{
- while (n-- > 0)
- printk (" %x", *p++);
-}
-
-static void ncr_printl_hex(char *label, u_char *p, int n)
-{
- printk("%s", label);
- ncr_print_hex(p, n);
- printk (".\n");
-}
-
-/*
-** Transfer direction
-**
-** Until some linux kernel version near 2.3.40, low-level scsi
-** drivers were not told about data transfer direction.
-** We check the existence of this feature that has been expected
-** for a _long_ time by all SCSI driver developers by just
-** testing against the definition of SCSI_DATA_UNKNOWN. Indeed
-** this is a hack, but testing against a kernel version would
-** have been a shame. ;-)
-*/
-#ifdef SCSI_DATA_UNKNOWN
-
-#define scsi_data_direction(cmd) (cmd->sc_data_direction)
-
-#else
-
-#define SCSI_DATA_UNKNOWN 0
-#define SCSI_DATA_WRITE 1
-#define SCSI_DATA_READ 2
-#define SCSI_DATA_NONE 3
-
-static __inline__ int scsi_data_direction(Scsi_Cmnd *cmd)
-{
- int direction;
-
- switch((int) cmd->cmnd[0]) {
- case 0x08: /* READ(6) 08 */
- case 0x28: /* READ(10) 28 */
- case 0xA8: /* READ(12) A8 */
- direction = SCSI_DATA_READ;
- break;
- case 0x0A: /* WRITE(6) 0A */
- case 0x2A: /* WRITE(10) 2A */
- case 0xAA: /* WRITE(12) AA */
- direction = SCSI_DATA_WRITE;
- break;
- default:
- direction = SCSI_DATA_UNKNOWN;
- break;
- }
-
- return direction;
-}
-
-#endif /* SCSI_DATA_UNKNOWN */
-
-
-/*
-** /proc directory entry and proc_info function
-*/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,27)
-static struct proc_dir_entry proc_scsi_sym53c8xx = {
- PROC_SCSI_SYM53C8XX, 9, NAME53C8XX,
- S_IFDIR | S_IRUGO | S_IXUGO, 2
-};
-#endif
-#ifdef SCSI_NCR_PROC_INFO_SUPPORT
-static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
- int length, int func);
-#endif
-
-/*
-** Driver setup.
-**
-** This structure is initialized from linux config options.
-** It can be overridden at boot-up by the boot command line.
-*/
-static struct ncr_driver_setup
- driver_setup = SCSI_NCR_DRIVER_SETUP;
-
-#ifdef SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
-static struct ncr_driver_setup
- driver_safe_setup __initdata = SCSI_NCR_DRIVER_SAFE_SETUP;
-# ifdef MODULE
-char *sym53c8xx = 0; /* command line passed by insmod */
-MODULE_PARM(sym53c8xx, "s");
-# endif
-#endif
-
-/*
-** Other Linux definitions
-*/
-#define SetScsiResult(cmd, h_sts, s_sts) \
- cmd->result = (((h_sts) << 16) + ((s_sts) & 0x7f))
-
-/* We may have to remind our amnesiac SCSI layer of the reason of the abort */
-#if 0
-#define SetScsiAbortResult(cmd) \
- SetScsiResult( \
- cmd, \
- (cmd)->abort_reason == DID_TIME_OUT ? DID_TIME_OUT : DID_ABORT, \
- 0xff)
-#else
-#define SetScsiAbortResult(cmd) SetScsiResult(cmd, DID_ABORT, 0xff)
-#endif
-
-static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs);
-static void sym53c8xx_timeout(unsigned long np);
-
-#define initverbose (driver_setup.verbose)
-#define bootverbose (np->verbose)
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
-static u_char Tekram_sync[16] __initdata =
- {25,31,37,43, 50,62,75,125, 12,15,18,21, 6,7,9,10};
-#endif /* SCSI_NCR_NVRAM_SUPPORT */
-
-/*
-** Structures used by sym53c8xx_detect/sym53c8xx_pci_init to
-** transmit device configuration to the ncr_attach() function.
-*/
-typedef struct {
- int bus;
- u_char device_fn;
- u_long base;
- u_long base_2;
- u_long io_port;
- u_long base_c;
- u_long base_2_c;
- int irq;
-/* port and reg fields to use INB, OUTB macros */
- u_long base_io;
- volatile struct ncr_reg *reg;
-} ncr_slot;
-
-typedef struct {
- int type;
-#define SCSI_NCR_SYMBIOS_NVRAM (1)
-#define SCSI_NCR_TEKRAM_NVRAM (2)
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- union {
- Symbios_nvram Symbios;
- Tekram_nvram Tekram;
- } data;
-#endif
-} ncr_nvram;
-
-/*
-** Structure used by sym53c8xx_detect/sym53c8xx_pci_init
-** to save data on each detected board for ncr_attach().
-*/
-typedef struct {
- pcidev_t pdev;
- ncr_slot slot;
- ncr_chip chip;
- ncr_nvram *nvram;
- u_char host_id;
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- u_char pqs_pds;
-#endif
- int attach_done;
-} ncr_device;
-
-/*==========================================================
-**
-** assert ()
-**
-**==========================================================
-**
-** modified copy from 386bsd:/usr/include/sys/assert.h
-**
-**----------------------------------------------------------
-*/
-
-#define assert(expression) { \
- if (!(expression)) { \
- (void)panic( \
- "assertion \"%s\" failed: file \"%s\", line %d\n", \
- #expression, \
- __FILE__, __LINE__); \
- } \
-}
-
-/*==========================================================
-**
-** Command control block states.
-**
-**==========================================================
-*/
-
-#define HS_IDLE (0)
-#define HS_BUSY (1)
-#define HS_NEGOTIATE (2) /* sync/wide data transfer*/
-#define HS_DISCONNECT (3) /* Disconnected by target */
-
-#define HS_DONEMASK (0x80)
-#define HS_COMPLETE (4|HS_DONEMASK)
-#define HS_SEL_TIMEOUT (5|HS_DONEMASK) /* Selection timeout */
-#define HS_RESET (6|HS_DONEMASK) /* SCSI reset */
-#define HS_ABORTED (7|HS_DONEMASK) /* Transfer aborted */
-#define HS_TIMEOUT (8|HS_DONEMASK) /* Software timeout */
-#define HS_FAIL (9|HS_DONEMASK) /* SCSI or PCI bus errors */
-#define HS_UNEXPECTED (10|HS_DONEMASK)/* Unexpected disconnect */
-
-#define DSA_INVALID 0xffffffff
-
-/*==========================================================
-**
-** Software Interrupt Codes
-**
-**==========================================================
-*/
-
-#define SIR_BAD_STATUS (1)
-#define SIR_SEL_ATN_NO_MSG_OUT (2)
-#define SIR_MSG_RECEIVED (3)
-#define SIR_MSG_WEIRD (4)
-#define SIR_NEGO_FAILED (5)
-#define SIR_NEGO_PROTO (6)
-#define SIR_SCRIPT_STOPPED (7)
-#define SIR_REJECT_TO_SEND (8)
-#define SIR_SWIDE_OVERRUN (9)
-#define SIR_SODL_UNDERRUN (10)
-#define SIR_RESEL_NO_MSG_IN (11)
-#define SIR_RESEL_NO_IDENTIFY (12)
-#define SIR_RESEL_BAD_LUN (13)
-#define SIR_TARGET_SELECTED (14)
-#define SIR_RESEL_BAD_I_T_L (15)
-#define SIR_RESEL_BAD_I_T_L_Q (16)
-#define SIR_ABORT_SENT (17)
-#define SIR_RESEL_ABORTED (18)
-#define SIR_MSG_OUT_DONE (19)
-#define SIR_AUTO_SENSE_DONE (20)
-#define SIR_DUMMY_INTERRUPT (21)
-#define SIR_DATA_OVERRUN (22)
-#define SIR_BAD_PHASE (23)
-#define SIR_MAX (23)
-
-/*==========================================================
-**
-** Extended error bits.
-** xerr_status field of struct ccb.
-**
-**==========================================================
-*/
-
-#define XE_EXTRA_DATA (1) /* unexpected data phase */
-#define XE_BAD_PHASE (2) /* illegal phase (4/5) */
-#define XE_PARITY_ERR (4) /* unrecovered SCSI parity error */
-#define XE_SODL_UNRUN (1<<3)
-#define XE_SWIDE_OVRUN (1<<4)
-
-/*==========================================================
-**
-** Negotiation status.
-** nego_status field of struct ccb.
-**
-**==========================================================
-*/
-
-#define NS_NOCHANGE (0)
-#define NS_SYNC (1)
-#define NS_WIDE (2)
-#define NS_PPR (4)
-
-/*==========================================================
-**
-** "Special features" of targets.
-** quirks field of struct tcb.
-** actualquirks field of struct ccb.
-**
-**==========================================================
-*/
-
-#define QUIRK_AUTOSAVE (0x01)
-
-/*==========================================================
-**
-** Capability bits in Inquire response byte 7.
-**
-**==========================================================
-*/
-
-#define INQ7_QUEUE (0x02)
-#define INQ7_SYNC (0x10)
-#define INQ7_WIDE16 (0x20)
-
-/*==========================================================
-**
-** A CCB hashed table is used to retrieve CCB address
-** from DSA value.
-**
-**==========================================================
-*/
-
-#define CCB_HASH_SHIFT 8
-#define CCB_HASH_SIZE (1UL << CCB_HASH_SHIFT)
-#define CCB_HASH_MASK (CCB_HASH_SIZE-1)
-#define CCB_HASH_CODE(dsa) (((dsa) >> 11) & CCB_HASH_MASK)
-
-/*==========================================================
-**
-** Declaration of structs.
-**
-**==========================================================
-*/
-
-struct tcb;
-struct lcb;
-struct ccb;
-struct ncb;
-struct script;
-
-typedef struct ncb * ncb_p;
-typedef struct tcb * tcb_p;
-typedef struct lcb * lcb_p;
-typedef struct ccb * ccb_p;
-
-struct link {
- ncrcmd l_cmd;
- ncrcmd l_paddr;
-};
-
-struct usrcmd {
- u_long target;
- u_long lun;
- u_long data;
- u_long cmd;
-};
-
-#define UC_SETSYNC 10
-#define UC_SETTAGS 11
-#define UC_SETDEBUG 12
-#define UC_SETORDER 13
-#define UC_SETWIDE 14
-#define UC_SETFLAG 15
-#define UC_SETVERBOSE 17
-#define UC_RESETDEV 18
-#define UC_CLEARDEV 19
-
-#define UF_TRACE (0x01)
-#define UF_NODISC (0x02)
-#define UF_NOSCAN (0x04)
-
-/*========================================================================
-**
-** Declaration of structs: target control block
-**
-**========================================================================
-*/
-struct tcb {
- /*----------------------------------------------------------------
- ** LUN tables.
- ** An array of bus addresses is used on reselection by
- ** the SCRIPT.
- **----------------------------------------------------------------
- */
- u_int32 *luntbl; /* lcbs bus address table */
- u_int32 b_luntbl; /* bus address of this table */
- u_int32 b_lun0; /* bus address of lun0 */
- lcb_p l0p; /* lcb of LUN #0 (normal case) */
-#if MAX_LUN > 1
- lcb_p *lmp; /* Other lcb's [1..MAX_LUN] */
-#endif
- /*----------------------------------------------------------------
- ** Target capabilities.
- **----------------------------------------------------------------
- */
- u_char inq_done; /* Target capabilities received */
- u_char inq_byte7; /* Contains these capabilities */
-
- /*----------------------------------------------------------------
- ** Some flags.
- **----------------------------------------------------------------
- */
- u_char to_reset; /* This target is to be reset */
-
- /*----------------------------------------------------------------
- ** Pointer to the ccb used for negotiation.
- ** Prevent from starting a negotiation for all queued commands
- ** when tagged command queuing is enabled.
- **----------------------------------------------------------------
- */
- ccb_p nego_cp;
-
- /*----------------------------------------------------------------
- ** negotiation of wide and synch transfer and device quirks.
- ** sval, wval and uval are read from SCRIPTS and so have alignment
- ** constraints.
- **----------------------------------------------------------------
- */
-/*0*/ u_char uval;
-/*1*/ u_char sval;
-/*2*/ u_char filler2;
-/*3*/ u_char wval;
- u_short period;
- u_char minsync;
- u_char maxoffs;
- u_char quirks;
- u_char widedone;
-
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- u_char ic_min_sync;
- u_char ic_max_width;
- u_char ic_done;
-#endif
- u_char ic_maximums_set;
- u_char ppr_negotiation;
-
- /*----------------------------------------------------------------
- ** User settable limits and options.
- ** These limits are read from the NVRAM if present.
- **----------------------------------------------------------------
- */
- u_char usrsync;
- u_char usrwide;
- u_short usrtags;
- u_char usrflag;
-};
-
-/*========================================================================
-**
-** Declaration of structs: lun control block
-**
-**========================================================================
-*/
-struct lcb {
- /*----------------------------------------------------------------
- ** On reselection, SCRIPTS use this value as a JUMP address
- ** after the IDENTIFY has been successfully received.
- ** This field is set to 'resel_tag' if TCQ is enabled and
- ** to 'resel_notag' if TCQ is disabled.
- ** (Must be at zero due to bad lun handling on reselection)
- **----------------------------------------------------------------
- */
-/*0*/ u_int32 resel_task;
-
- /*----------------------------------------------------------------
- ** Task table used by the script processor to retrieve the
- ** task corresponding to a reselected nexus. The TAG is used
- ** as offset to determine the corresponding entry.
- ** Each entry contains the associated CCB bus address.
- **----------------------------------------------------------------
- */
- u_int32 tasktbl_0; /* Used if TCQ not enabled */
- u_int32 *tasktbl;
- u_int32 b_tasktbl;
-
- /*----------------------------------------------------------------
- ** CCB queue management.
- **----------------------------------------------------------------
- */
- XPT_QUEHEAD busy_ccbq; /* Queue of busy CCBs */
- XPT_QUEHEAD wait_ccbq; /* Queue of waiting for IO CCBs */
- u_short busyccbs; /* CCBs busy for this lun */
- u_short queuedccbs; /* CCBs queued to the controller*/
- u_short queuedepth; /* Queue depth for this lun */
- u_short scdev_depth; /* SCSI device queue depth */
- u_short maxnxs; /* Max possible nexuses */
-
- /*----------------------------------------------------------------
- ** Control of tagged command queuing.
- ** Tags allocation is performed using a circular buffer.
- ** This avoids using a loop for tag allocation.
- **----------------------------------------------------------------
- */
- u_short ia_tag; /* Tag allocation index */
- u_short if_tag; /* Tag release index */
- u_char *cb_tags; /* Circular tags buffer */
- u_char inq_byte7; /* Store unit CmdQ capability */
- u_char usetags; /* Command queuing is active */
- u_char to_clear; /* User wants to clear all tasks*/
- u_short maxtags; /* Max NR of tags asked by user */
- u_short numtags; /* Current number of tags */
-
- /*----------------------------------------------------------------
- ** QUEUE FULL and ORDERED tag control.
- **----------------------------------------------------------------
- */
- u_short num_good; /* Nr of GOOD since QUEUE FULL */
- u_short tags_sum[2]; /* Tags sum counters */
- u_char tags_si; /* Current index to tags sum */
- u_long tags_stime; /* Last time we switch tags_sum */
-};
-
-/*========================================================================
-**
-** Declaration of structs: actions for a task.
-**
-**========================================================================
-**
-** It is part of the CCB and is called by the scripts processor to
-** start or restart the data structure (nexus).
-**
-**------------------------------------------------------------------------
-*/
-struct action {
- u_int32 start;
- u_int32 restart;
-};
-
-/*========================================================================
-**
-** Declaration of structs: Phase mismatch context.
-**
-**========================================================================
-**
-** It is part of the CCB and is used as parameters for the DATA
-** pointer. We need two contexts to handle correctly the SAVED
-** DATA POINTER.
-**
-**------------------------------------------------------------------------
-*/
-struct pm_ctx {
- struct scr_tblmove sg; /* Updated interrupted SG block */
- u_int32 ret; /* SCRIPT return address */
-};
-
-/*========================================================================
-**
-** Declaration of structs: global HEADER.
-**
-**========================================================================
-**
-** In earlier driver versions, this substructure was copied from the
-** ccb to a global address after selection (or reselection) and copied
-** back before disconnect. Since we are now using LOAD/STORE DSA
-** RELATIVE instructions, the script is able to access directly these
-** fields, and so, this header is no more copied.
-**
-**------------------------------------------------------------------------
-*/
-
-struct head {
- /*----------------------------------------------------------------
- ** Start and restart SCRIPTS addresses (must be at 0).
- **----------------------------------------------------------------
- */
- struct action go;
-
- /*----------------------------------------------------------------
- ** Saved data pointer.
- ** Points to the position in the script responsible for the
- ** actual transfer of data.
- ** It's written after reception of a SAVE_DATA_POINTER message.
- ** The goalpointer points after the last transfer command.
- **----------------------------------------------------------------
- */
- u_int32 savep;
- u_int32 lastp;
- u_int32 goalp;
-
- /*----------------------------------------------------------------
- ** Alternate data pointer.
- ** They are copied back to savep/lastp/goalp by the SCRIPTS
- ** when the direction is unknown and the device claims data out.
- **----------------------------------------------------------------
- */
- u_int32 wlastp;
- u_int32 wgoalp;
-
- /*----------------------------------------------------------------
- ** Status fields.
- **----------------------------------------------------------------
- */
- u_char status[4]; /* host status */
-};
-
-/*
-** LUN control block lookup.
-** We use a direct pointer for LUN #0, and a table of pointers
-** which is only allocated for devices that support LUN(s) > 0.
-*/
-#if MAX_LUN <= 1
-#define ncr_lp(np, tp, lun) (!lun) ? (tp)->l0p : 0
-#else
-#define ncr_lp(np, tp, lun) \
- (!lun) ? (tp)->l0p : (tp)->lmp ? (tp)->lmp[(lun)] : 0
-#endif
-
-/*
-** The status bytes are used by the host and the script processor.
-**
-** The four bytes (status[4]) are copied to the scratchb register
-** (declared as scr0..scr3 in ncr_reg.h) just after the select/reselect,
-** and copied back just after disconnecting.
-** Inside the script the XX_REG are used.
-*/
-
-/*
-** Last four bytes (script)
-*/
-#define QU_REG scr0
-#define HS_REG scr1
-#define HS_PRT nc_scr1
-#define SS_REG scr2
-#define SS_PRT nc_scr2
-#define HF_REG scr3
-#define HF_PRT nc_scr3
-
-/*
-** Last four bytes (host)
-*/
-#define actualquirks phys.header.status[0]
-#define host_status phys.header.status[1]
-#define scsi_status phys.header.status[2]
-#define host_flags phys.header.status[3]
-
-/*
-** Host flags
-*/
-#define HF_IN_PM0 1u
-#define HF_IN_PM1 (1u<<1)
-#define HF_ACT_PM (1u<<2)
-#define HF_DP_SAVED (1u<<3)
-#define HF_AUTO_SENSE (1u<<4)
-#define HF_DATA_IN (1u<<5)
-#define HF_PM_TO_C (1u<<6)
-#define HF_EXT_ERR (1u<<7)
-
-#ifdef SCSI_NCR_IARB_SUPPORT
-#define HF_HINT_IARB (1u<<7)
-#endif
-
-/*
-** This one is stolen from QU_REG.:)
-*/
-#define HF_DATA_ST (1u<<7)
-
-/*==========================================================
-**
-** Declaration of structs: Data structure block
-**
-**==========================================================
-**
-** During execution of a ccb by the script processor,
-** the DSA (data structure address) register points
-** to this substructure of the ccb.
-** This substructure contains the header with
-** the script-processor-changable data and
-** data blocks for the indirect move commands.
-**
-**----------------------------------------------------------
-*/
-
-struct dsb {
-
- /*
- ** Header.
- */
-
- struct head header;
-
- /*
- ** Table data for Script
- */
-
- struct scr_tblsel select;
- struct scr_tblmove smsg ;
- struct scr_tblmove smsg_ext ;
- struct scr_tblmove cmd ;
- struct scr_tblmove sense ;
- struct scr_tblmove wresid;
- struct scr_tblmove data [MAX_SCATTER];
-
- /*
- ** Phase mismatch contexts.
- ** We need two to handle correctly the
- ** SAVED DATA POINTER.
- */
-
- struct pm_ctx pm0;
- struct pm_ctx pm1;
-};
-
-
-/*========================================================================
-**
-** Declaration of structs: Command control block.
-**
-**========================================================================
-*/
-struct ccb {
- /*----------------------------------------------------------------
- ** This is the data structure which is pointed by the DSA
- ** register when it is executed by the script processor.
- ** It must be the first entry.
- **----------------------------------------------------------------
- */
- struct dsb phys;
-
- /*----------------------------------------------------------------
- ** The general SCSI driver provides a
- ** pointer to a control block.
- **----------------------------------------------------------------
- */
- Scsi_Cmnd *cmd; /* SCSI command */
- u_char cdb_buf[16]; /* Copy of CDB */
- u_char sense_buf[64];
- int data_len; /* Total data length */
- int segments; /* Number of SG segments */
-
- /*----------------------------------------------------------------
- ** Message areas.
- ** We prepare a message to be sent after selection.
- ** We may use a second one if the command is rescheduled
- ** due to CHECK_CONDITION or QUEUE FULL status.
- ** Contents are IDENTIFY and SIMPLE_TAG.
- ** While negotiating sync or wide transfer,
- ** a SDTR or WDTR message is appended.
- **----------------------------------------------------------------
- */
- u_char scsi_smsg [12];
- u_char scsi_smsg2[12];
-
- /*----------------------------------------------------------------
- ** Miscellaneous status'.
- **----------------------------------------------------------------
- */
- u_char nego_status; /* Negotiation status */
- u_char xerr_status; /* Extended error flags */
- u_int32 extra_bytes; /* Extraneous bytes transferred */
-
- /*----------------------------------------------------------------
- ** Saved info for auto-sense
- **----------------------------------------------------------------
- */
- u_char sv_scsi_status;
- u_char sv_xerr_status;
-
- /*----------------------------------------------------------------
- ** Other fields.
- **----------------------------------------------------------------
- */
- u_long p_ccb; /* BUS address of this CCB */
- u_char sensecmd[6]; /* Sense command */
- u_char to_abort; /* This CCB is to be aborted */
- u_short tag; /* Tag for this transfer */
- /* NO_TAG means no tag */
- u_char tags_si; /* Lun tags sum index (0,1) */
-
- u_char target;
- u_char lun;
- u_short queued;
- ccb_p link_ccb; /* Host adapter CCB chain */
- ccb_p link_ccbh; /* Host adapter CCB hash chain */
- XPT_QUEHEAD link_ccbq; /* Link to unit CCB queue */
- u_int32 startp; /* Initial data pointer */
- u_int32 lastp0; /* Initial 'lastp' */
- int ext_sg; /* Extreme data pointer, used */
- int ext_ofs; /* to calculate the residual. */
- int resid;
-};
-
-#define CCB_PHYS(cp,lbl) (cp->p_ccb + offsetof(struct ccb, lbl))
-
-
-/*========================================================================
-**
-** Declaration of structs: NCR device descriptor
-**
-**========================================================================
-*/
-struct ncb {
- /*----------------------------------------------------------------
- ** Idle task and invalid task actions and their bus
- ** addresses.
- **----------------------------------------------------------------
- */
- struct action idletask;
- struct action notask;
- struct action bad_i_t_l;
- struct action bad_i_t_l_q;
- u_long p_idletask;
- u_long p_notask;
- u_long p_bad_i_t_l;
- u_long p_bad_i_t_l_q;
-
- /*----------------------------------------------------------------
- ** Dummy lun table to protect us against target returning bad
- ** lun number on reselection.
- **----------------------------------------------------------------
- */
- u_int32 *badluntbl; /* Table physical address */
- u_int32 resel_badlun; /* SCRIPT handler BUS address */
-
- /*----------------------------------------------------------------
- ** Bit 32-63 of the on-chip RAM bus address in LE format.
- ** The START_RAM64 script loads the MMRS and MMWS from this
- ** field.
- **----------------------------------------------------------------
- */
- u_int32 scr_ram_seg;
-
- /*----------------------------------------------------------------
- ** CCBs management queues.
- **----------------------------------------------------------------
- */
- Scsi_Cmnd *waiting_list; /* Commands waiting for a CCB */
- /* when lcb is not allocated. */
- Scsi_Cmnd *done_list; /* Commands waiting for done() */
- /* callback to be invoked. */
- spinlock_t smp_lock; /* Lock for SMP threading */
-
- /*----------------------------------------------------------------
- ** Chip and controller indentification.
- **----------------------------------------------------------------
- */
- int unit; /* Unit number */
- char chip_name[8]; /* Chip name */
- char inst_name[16]; /* ncb instance name */
-
- /*----------------------------------------------------------------
- ** Initial value of some IO register bits.
- ** These values are assumed to have been set by BIOS, and may
- ** be used for probing adapter implementation differences.
- **----------------------------------------------------------------
- */
- u_char sv_scntl0, sv_scntl3, sv_dmode, sv_dcntl, sv_ctest3, sv_ctest4,
- sv_ctest5, sv_gpcntl, sv_stest2, sv_stest4, sv_stest1, sv_scntl4;
-
- /*----------------------------------------------------------------
- ** Actual initial value of IO register bits used by the
- ** driver. They are loaded at initialisation according to
- ** features that are to be enabled.
- **----------------------------------------------------------------
- */
- u_char rv_scntl0, rv_scntl3, rv_dmode, rv_dcntl, rv_ctest3, rv_ctest4,
- rv_ctest5, rv_stest2, rv_ccntl0, rv_ccntl1, rv_scntl4;
-
- /*----------------------------------------------------------------
- ** Target data.
- ** Target control block bus address array used by the SCRIPT
- ** on reselection.
- **----------------------------------------------------------------
- */
- struct tcb target[MAX_TARGET];
- u_int32 *targtbl;
-
- /*----------------------------------------------------------------
- ** Virtual and physical bus addresses of the chip.
- **----------------------------------------------------------------
- */
-#ifndef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- u_long base_va; /* MMIO base virtual address */
- u_long base2_va; /* On-chip RAM virtual address */
-#endif
- u_long base_ba; /* MMIO base bus address */
- u_long base_io; /* IO space base address */
- u_long base_ws; /* (MM)IO window size */
- u_long base2_ba; /* On-chip RAM bus address */
- u_long base2_ws; /* On-chip RAM window size */
- u_int irq; /* IRQ number */
- volatile /* Pointer to volatile for */
- struct ncr_reg *reg; /* memory mapped IO. */
-
- /*----------------------------------------------------------------
- ** SCRIPTS virtual and physical bus addresses.
- ** 'script' is loaded in the on-chip RAM if present.
- ** 'scripth' stays in main memory for all chips except the
- ** 53C895A and 53C896 that provide 8K on-chip RAM.
- **----------------------------------------------------------------
- */
- struct script *script0; /* Copies of script and scripth */
- struct scripth *scripth0; /* relocated for this ncb. */
- u_long p_script; /* Actual script and scripth */
- u_long p_scripth; /* bus addresses. */
- u_long p_scripth0;
-
- /*----------------------------------------------------------------
- ** General controller parameters and configuration.
- **----------------------------------------------------------------
- */
- pcidev_t pdev;
- u_short device_id; /* PCI device id */
- u_char revision_id; /* PCI device revision id */
- u_char bus; /* PCI BUS number */
- u_char device_fn; /* PCI BUS device and function */
- u_char myaddr; /* SCSI id of the adapter */
- u_char maxburst; /* log base 2 of dwords burst */
- u_char maxwide; /* Maximum transfer width */
- u_char minsync; /* Minimum sync period factor */
- u_char maxsync; /* Maximum sync period factor */
- u_char maxoffs; /* Max scsi offset */
- u_char maxoffs_st; /* Max scsi offset in ST mode */
- u_char multiplier; /* Clock multiplier (1,2,4) */
- u_char clock_divn; /* Number of clock divisors */
- u_long clock_khz; /* SCSI clock frequency in KHz */
- u_int features; /* Chip features map */
-
- /*----------------------------------------------------------------
- ** Range for the PCI clock frequency measurement result
- ** that ensures the algorithm used by the driver can be
- ** trusted for the SCSI clock frequency measurement.
- ** (Assuming a PCI clock frequency of 33 MHz).
- **----------------------------------------------------------------
- */
- u_int pciclock_min;
- u_int pciclock_max;
-
- /*----------------------------------------------------------------
- ** Start queue management.
- ** It is filled up by the host processor and accessed by the
- ** SCRIPTS processor in order to start SCSI commands.
- **----------------------------------------------------------------
- */
- u_long p_squeue; /* Start queue BUS address */
- u_int32 *squeue; /* Start queue virtual address */
- u_short squeueput; /* Next free slot of the queue */
- u_short actccbs; /* Number of allocated CCBs */
- u_short queuedepth; /* Start queue depth */
-
- /*----------------------------------------------------------------
- ** Command completion queue.
- ** It is the same size as the start queue to avoid overflow.
- **----------------------------------------------------------------
- */
- u_short dqueueget; /* Next position to scan */
- u_int32 *dqueue; /* Completion (done) queue */
-
- /*----------------------------------------------------------------
- ** Timeout handler.
- **----------------------------------------------------------------
- */
- struct timer_list timer; /* Timer handler link header */
- u_long lasttime;
- u_long settle_time; /* Resetting the SCSI BUS */
-
- /*----------------------------------------------------------------
- ** Debugging and profiling.
- **----------------------------------------------------------------
- */
- struct ncr_reg regdump; /* Register dump */
- u_long regtime; /* Time it has been done */
-
- /*----------------------------------------------------------------
- ** Miscellaneous buffers accessed by the scripts-processor.
- ** They shall be DWORD aligned, because they may be read or
- ** written with a script command.
- **----------------------------------------------------------------
- */
- u_char msgout[12]; /* Buffer for MESSAGE OUT */
- u_char msgin [12]; /* Buffer for MESSAGE IN */
- u_int32 lastmsg; /* Last SCSI message sent */
- u_char scratch; /* Scratch for SCSI receive */
-
- /*----------------------------------------------------------------
- ** Miscellaneous configuration and status parameters.
- **----------------------------------------------------------------
- */
- u_char scsi_mode; /* Current SCSI BUS mode */
- u_char order; /* Tag order to use */
- u_char verbose; /* Verbosity for this controller*/
- u_int32 ncr_cache; /* Used for cache test at init. */
- u_long p_ncb; /* BUS address of this NCB */
-
- /*----------------------------------------------------------------
- ** CCB lists and queue.
- **----------------------------------------------------------------
- */
- ccb_p ccbh[CCB_HASH_SIZE]; /* CCB hashed by DSA value */
- struct ccb *ccbc; /* CCB chain */
- XPT_QUEHEAD free_ccbq; /* Queue of available CCBs */
-
- /*----------------------------------------------------------------
- ** IMMEDIATE ARBITRATION (IARB) control.
- ** We keep track in 'last_cp' of the last CCB that has been
- ** queued to the SCRIPTS processor and clear 'last_cp' when
- ** this CCB completes. If last_cp is not zero at the moment
- ** we queue a new CCB, we set a flag in 'last_cp' that is
- ** used by the SCRIPTS as a hint for setting IARB.
- ** We donnot set more than 'iarb_max' consecutive hints for
- ** IARB in order to leave devices a chance to reselect.
- ** By the way, any non zero value of 'iarb_max' is unfair. :)
- **----------------------------------------------------------------
- */
-#ifdef SCSI_NCR_IARB_SUPPORT
- struct ccb *last_cp; /* Last queud CCB used for IARB */
- u_short iarb_max; /* Max. # consecutive IARB hints*/
- u_short iarb_count; /* Actual # of these hints */
-#endif
-
- /*----------------------------------------------------------------
- ** We need the LCB in order to handle disconnections and
- ** to count active CCBs for task management. So, we use
- ** a unique CCB for LUNs we donnot have the LCB yet.
- ** This queue normally should have at most 1 element.
- **----------------------------------------------------------------
- */
- XPT_QUEHEAD b0_ccbq;
-
- /*----------------------------------------------------------------
- ** We use a different scatter function for 896 rev 1.
- **----------------------------------------------------------------
- */
- int (*scatter) (ncb_p, ccb_p, Scsi_Cmnd *);
-
- /*----------------------------------------------------------------
- ** Command abort handling.
- ** We need to synchronize tightly with the SCRIPTS
- ** processor in order to handle things correctly.
- **----------------------------------------------------------------
- */
- u_char abrt_msg[4]; /* Message to send buffer */
- struct scr_tblmove abrt_tbl; /* Table for the MOV of it */
- struct scr_tblsel abrt_sel; /* Sync params for selection */
- u_char istat_sem; /* Tells the chip to stop (SEM) */
-
- /*----------------------------------------------------------------
- ** Fields that should be removed or changed.
- **----------------------------------------------------------------
- */
- struct usrcmd user; /* Command from user */
- volatile u_char release_stage; /* Synchronisation stage on release */
-
- /*----------------------------------------------------------------
- ** Fields that are used (primarily) for integrity check
- **----------------------------------------------------------------
- */
- unsigned char check_integrity; /* Enable midlayer integ. check on
- * bus scan. */
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- unsigned char check_integ_par; /* Set if par or Init. Det. error
- * used only during integ check */
-#endif
-};
-
-#define NCB_PHYS(np, lbl) (np->p_ncb + offsetof(struct ncb, lbl))
-#define NCB_SCRIPT_PHYS(np,lbl) (np->p_script + offsetof (struct script, lbl))
-#define NCB_SCRIPTH_PHYS(np,lbl) (np->p_scripth + offsetof (struct scripth,lbl))
-#define NCB_SCRIPTH0_PHYS(np,lbl) (np->p_scripth0+offsetof (struct scripth,lbl))
-
-/*==========================================================
-**
-**
-** Script for NCR-Processor.
-**
-** Use ncr_script_fill() to create the variable parts.
-** Use ncr_script_copy_and_bind() to make a copy and
-** bind to physical addresses.
-**
-**
-**==========================================================
-**
-** We have to know the offsets of all labels before
-** we reach them (for forward jumps).
-** Therefore we declare a struct here.
-** If you make changes inside the script,
-** DONT FORGET TO CHANGE THE LENGTHS HERE!
-**
-**----------------------------------------------------------
-*/
-
-/*
-** Script fragments which are loaded into the on-chip RAM
-** of 825A, 875, 876, 895, 895A and 896 chips.
-*/
-struct script {
- ncrcmd start [ 14];
- ncrcmd getjob_begin [ 4];
- ncrcmd getjob_end [ 4];
- ncrcmd select [ 8];
- ncrcmd wf_sel_done [ 2];
- ncrcmd send_ident [ 2];
-#ifdef SCSI_NCR_IARB_SUPPORT
- ncrcmd select2 [ 8];
-#else
- ncrcmd select2 [ 2];
-#endif
- ncrcmd command [ 2];
- ncrcmd dispatch [ 28];
- ncrcmd sel_no_cmd [ 10];
- ncrcmd init [ 6];
- ncrcmd clrack [ 4];
- ncrcmd disp_status [ 4];
- ncrcmd datai_done [ 26];
- ncrcmd datao_done [ 12];
- ncrcmd ign_i_w_r_msg [ 4];
- ncrcmd datai_phase [ 2];
- ncrcmd datao_phase [ 4];
- ncrcmd msg_in [ 2];
- ncrcmd msg_in2 [ 10];
-#ifdef SCSI_NCR_IARB_SUPPORT
- ncrcmd status [ 14];
-#else
- ncrcmd status [ 10];
-#endif
- ncrcmd complete [ 8];
-#ifdef SCSI_NCR_PCIQ_MAY_REORDER_WRITES
- ncrcmd complete2 [ 12];
-#else
- ncrcmd complete2 [ 10];
-#endif
-#ifdef SCSI_NCR_PCIQ_SYNC_ON_INTR
- ncrcmd done [ 18];
-#else
- ncrcmd done [ 14];
-#endif
- ncrcmd done_end [ 2];
- ncrcmd save_dp [ 8];
- ncrcmd restore_dp [ 4];
- ncrcmd disconnect [ 20];
-#ifdef SCSI_NCR_IARB_SUPPORT
- ncrcmd idle [ 4];
-#else
- ncrcmd idle [ 2];
-#endif
-#ifdef SCSI_NCR_IARB_SUPPORT
- ncrcmd ungetjob [ 6];
-#else
- ncrcmd ungetjob [ 4];
-#endif
- ncrcmd reselect [ 4];
- ncrcmd reselected [ 20];
- ncrcmd resel_scntl4 [ 30];
-#if MAX_TASKS*4 > 512
- ncrcmd resel_tag [ 18];
-#elif MAX_TASKS*4 > 256
- ncrcmd resel_tag [ 12];
-#else
- ncrcmd resel_tag [ 8];
-#endif
- ncrcmd resel_go [ 6];
- ncrcmd resel_notag [ 2];
- ncrcmd resel_dsa [ 8];
- ncrcmd data_in [MAX_SCATTER * SCR_SG_SIZE];
- ncrcmd data_in2 [ 4];
- ncrcmd data_out [MAX_SCATTER * SCR_SG_SIZE];
- ncrcmd data_out2 [ 4];
- ncrcmd pm0_data [ 12];
- ncrcmd pm0_data_out [ 6];
- ncrcmd pm0_data_end [ 6];
- ncrcmd pm1_data [ 12];
- ncrcmd pm1_data_out [ 6];
- ncrcmd pm1_data_end [ 6];
-};
-
-/*
-** Script fragments which stay in main memory for all chips
-** except for the 895A and 896 that support 8K on-chip RAM.
-*/
-struct scripth {
- ncrcmd start64 [ 2];
- ncrcmd no_data [ 2];
- ncrcmd sel_for_abort [ 18];
- ncrcmd sel_for_abort_1 [ 2];
- ncrcmd select_no_atn [ 8];
- ncrcmd wf_sel_done_no_atn [ 4];
-
- ncrcmd msg_in_etc [ 14];
- ncrcmd msg_received [ 4];
- ncrcmd msg_weird_seen [ 4];
- ncrcmd msg_extended [ 20];
- ncrcmd msg_bad [ 6];
- ncrcmd msg_weird [ 4];
- ncrcmd msg_weird1 [ 8];
-
- ncrcmd wdtr_resp [ 6];
- ncrcmd send_wdtr [ 4];
- ncrcmd sdtr_resp [ 6];
- ncrcmd send_sdtr [ 4];
- ncrcmd ppr_resp [ 6];
- ncrcmd send_ppr [ 4];
- ncrcmd nego_bad_phase [ 4];
- ncrcmd msg_out [ 4];
- ncrcmd msg_out_done [ 4];
- ncrcmd data_ovrun [ 2];
- ncrcmd data_ovrun1 [ 22];
- ncrcmd data_ovrun2 [ 8];
- ncrcmd abort_resel [ 16];
- ncrcmd resend_ident [ 4];
- ncrcmd ident_break [ 4];
- ncrcmd ident_break_atn [ 4];
- ncrcmd sdata_in [ 6];
- ncrcmd data_io [ 2];
- ncrcmd data_io_com [ 8];
- ncrcmd data_io_out [ 12];
- ncrcmd resel_bad_lun [ 4];
- ncrcmd bad_i_t_l [ 4];
- ncrcmd bad_i_t_l_q [ 4];
- ncrcmd bad_status [ 6];
- ncrcmd tweak_pmj [ 12];
- ncrcmd pm_handle [ 20];
- ncrcmd pm_handle1 [ 4];
- ncrcmd pm_save [ 4];
- ncrcmd pm0_save [ 14];
- ncrcmd pm1_save [ 14];
-
- /* WSR handling */
-#ifdef SYM_DEBUG_PM_WITH_WSR
- ncrcmd pm_wsr_handle [ 44];
-#else
- ncrcmd pm_wsr_handle [ 42];
-#endif
- ncrcmd wsr_ma_helper [ 4];
-
- /* Data area */
- ncrcmd zero [ 1];
- ncrcmd scratch [ 1];
- ncrcmd scratch1 [ 1];
- ncrcmd pm0_data_addr [ 1];
- ncrcmd pm1_data_addr [ 1];
- ncrcmd saved_dsa [ 1];
- ncrcmd saved_drs [ 1];
- ncrcmd done_pos [ 1];
- ncrcmd startpos [ 1];
- ncrcmd targtbl [ 1];
- /* End of data area */
-
-#ifdef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- ncrcmd start_ram [ 1];
- ncrcmd script0_ba [ 4];
- ncrcmd start_ram64 [ 3];
- ncrcmd script0_ba64 [ 3];
- ncrcmd scripth0_ba64 [ 6];
- ncrcmd ram_seg64 [ 1];
-#endif
- ncrcmd snooptest [ 6];
- ncrcmd snoopend [ 2];
-};
-
-/*==========================================================
-**
-**
-** Function headers.
-**
-**
-**==========================================================
-*/
-
-static ccb_p ncr_alloc_ccb (ncb_p np);
-static void ncr_complete (ncb_p np, ccb_p cp);
-static void ncr_exception (ncb_p np);
-static void ncr_free_ccb (ncb_p np, ccb_p cp);
-static ccb_p ncr_ccb_from_dsa(ncb_p np, u_long dsa);
-static void ncr_init_tcb (ncb_p np, u_char tn);
-static lcb_p ncr_alloc_lcb (ncb_p np, u_char tn, u_char ln);
-static lcb_p ncr_setup_lcb (ncb_p np, u_char tn, u_char ln,
- u_char *inq_data);
-static void ncr_getclock (ncb_p np, int mult);
-static u_int ncr_getpciclock (ncb_p np);
-static void ncr_selectclock (ncb_p np, u_char scntl3);
-static ccb_p ncr_get_ccb (ncb_p np, u_char tn, u_char ln);
-static void ncr_init (ncb_p np, int reset, char * msg, u_long code);
-static void ncr_int_sbmc (ncb_p np);
-static void ncr_int_par (ncb_p np, u_short sist);
-static void ncr_int_ma (ncb_p np);
-static void ncr_int_sir (ncb_p np);
-static void ncr_int_sto (ncb_p np);
-static void ncr_int_udc (ncb_p np);
-static void ncr_negotiate (ncb_p np, tcb_p tp);
-static int ncr_prepare_nego(ncb_p np, ccb_p cp, u_char *msgptr);
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
-static int ncr_ic_nego(ncb_p np, ccb_p cp, Scsi_Cmnd *cmd, u_char *msgptr);
-#endif
-static void ncr_script_copy_and_bind
- (ncb_p np, ncrcmd *src, ncrcmd *dst, int len);
-static void ncr_script_fill (struct script * scr, struct scripth * scripth);
-static int ncr_scatter_896R1 (ncb_p np, ccb_p cp, Scsi_Cmnd *cmd);
-static int ncr_scatter (ncb_p np, ccb_p cp, Scsi_Cmnd *cmd);
-static void ncr_getsync (ncb_p np, u_char sfac, u_char *fakp, u_char *scntl3p);
-static void ncr_get_xfer_info(ncb_p np, tcb_p tp, u_char *factor, u_char *offset, u_char *width);
-static void ncr_setsync (ncb_p np, ccb_p cp, u_char scntl3, u_char sxfer, u_char scntl4);
-static void ncr_set_sync_wide_status (ncb_p np, u_char target);
-static void ncr_setup_tags (ncb_p np, u_char tn, u_char ln);
-static void ncr_setwide (ncb_p np, ccb_p cp, u_char wide, u_char ack);
-static void ncr_setsyncwide (ncb_p np, ccb_p cp, u_char scntl3, u_char sxfer, u_char scntl4, u_char wide);
-static int ncr_show_msg (u_char * msg);
-static void ncr_print_msg (ccb_p cp, char *label, u_char * msg);
-static int ncr_snooptest (ncb_p np);
-static void ncr_timeout (ncb_p np);
-static void ncr_wakeup (ncb_p np, u_long code);
-static int ncr_wakeup_done (ncb_p np);
-static void ncr_start_next_ccb (ncb_p np, lcb_p lp, int maxn);
-static void ncr_put_start_queue(ncb_p np, ccb_p cp);
-static void ncr_chip_reset (ncb_p np);
-static void ncr_soft_reset (ncb_p np);
-static void ncr_start_reset (ncb_p np);
-static int ncr_reset_scsi_bus (ncb_p np, int enab_int, int settle_delay);
-static int ncr_compute_residual (ncb_p np, ccb_p cp);
-
-#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
-static void ncr_usercmd (ncb_p np);
-#endif
-
-static int ncr_attach (Scsi_Host_Template *tpnt, int unit, ncr_device *device);
-static void ncr_free_resources(ncb_p np);
-
-static void insert_into_waiting_list(ncb_p np, Scsi_Cmnd *cmd);
-static Scsi_Cmnd *retrieve_from_waiting_list(int to_remove, ncb_p np, Scsi_Cmnd *cmd);
-static void process_waiting_list(ncb_p np, int sts);
-
-#define remove_from_waiting_list(np, cmd) \
- retrieve_from_waiting_list(1, (np), (cmd))
-#define requeue_waiting_list(np) process_waiting_list((np), DID_OK)
-#define reset_waiting_list(np) process_waiting_list((np), DID_RESET)
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
-static void ncr_get_nvram (ncr_device *devp, ncr_nvram *nvp);
-static int sym_read_Tekram_nvram (ncr_slot *np, u_short device_id,
- Tekram_nvram *nvram);
-static int sym_read_Symbios_nvram (ncr_slot *np, Symbios_nvram *nvram);
-#endif
-
-/*==========================================================
-**
-**
-** Global static data.
-**
-**
-**==========================================================
-*/
-
-static inline char *ncr_name (ncb_p np)
-{
- return np->inst_name;
-}
-
-
-/*==========================================================
-**
-**
-** Scripts for NCR-Processor.
-**
-** Use ncr_script_bind for binding to physical addresses.
-**
-**
-**==========================================================
-**
-** NADDR generates a reference to a field of the controller data.
-** PADDR generates a reference to another part of the script.
-** RADDR generates a reference to a script processor register.
-** FADDR generates a reference to a script processor register
-** with offset.
-**
-**----------------------------------------------------------
-*/
-
-#define RELOC_SOFTC 0x40000000
-#define RELOC_LABEL 0x50000000
-#define RELOC_REGISTER 0x60000000
-#if 0
-#define RELOC_KVAR 0x70000000
-#endif
-#define RELOC_LABELH 0x80000000
-#define RELOC_MASK 0xf0000000
-
-#define NADDR(label) (RELOC_SOFTC | offsetof(struct ncb, label))
-#define PADDR(label) (RELOC_LABEL | offsetof(struct script, label))
-#define PADDRH(label) (RELOC_LABELH | offsetof(struct scripth, label))
-#define RADDR(label) (RELOC_REGISTER | REG(label))
-#define FADDR(label,ofs)(RELOC_REGISTER | ((REG(label))+(ofs)))
-#define KVAR(which) (RELOC_KVAR | (which))
-
-#define SCR_DATA_ZERO 0xf00ff00f
-
-#ifdef RELOC_KVAR
-#define SCRIPT_KVAR_JIFFIES (0)
-#define SCRIPT_KVAR_FIRST SCRIPT_KVAR_JIFFIES
-#define SCRIPT_KVAR_LAST SCRIPT_KVAR_JIFFIES
-/*
- * Kernel variables referenced in the scripts.
- * THESE MUST ALL BE ALIGNED TO A 4-BYTE BOUNDARY.
- */
-static void *script_kvars[] __initdata =
- { (void *)&jiffies };
-#endif
-
-static struct script script0 __initdata = {
-/*--------------------------< START >-----------------------*/ {
- /*
- ** This NOP will be patched with LED ON
- ** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
- */
- SCR_NO_OP,
- 0,
- /*
- ** Clear SIGP.
- */
- SCR_FROM_REG (ctest2),
- 0,
-
- /*
- ** Stop here if the C code wants to perform
- ** some error recovery procedure manually.
- ** (Indicate this by setting SEM in ISTAT)
- */
- SCR_FROM_REG (istat),
- 0,
- /*
- ** Report to the C code the next position in
- ** the start queue the SCRIPTS will schedule.
- ** The C code must not change SCRATCHA.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDRH (startpos),
- SCR_INT ^ IFTRUE (MASK (SEM, SEM)),
- SIR_SCRIPT_STOPPED,
-
- /*
- ** Start the next job.
- **
- ** @DSA = start point for this job.
- ** SCRATCHA = address of this job in the start queue.
- **
- ** We will restore startpos with SCRATCHA if we fails the
- ** arbitration or if it is the idle job.
- **
- ** The below GETJOB_BEGIN to GETJOB_END section of SCRIPTS
- ** is a critical path. If it is partially executed, it then
- ** may happen that the job address is not yet in the DSA
- ** and the next queue position points to the next JOB.
- */
- SCR_LOAD_ABS (dsa, 4),
- PADDRH (startpos),
- SCR_LOAD_REL (temp, 4),
- 4,
-}/*-------------------------< GETJOB_BEGIN >------------------*/,{
- SCR_STORE_ABS (temp, 4),
- PADDRH (startpos),
- SCR_LOAD_REL (dsa, 4),
- 0,
-}/*-------------------------< GETJOB_END >--------------------*/,{
- SCR_LOAD_REL (temp, 4),
- 0,
- SCR_RETURN,
- 0,
-
-}/*-------------------------< SELECT >----------------------*/,{
- /*
- ** DSA contains the address of a scheduled
- ** data structure.
- **
- ** SCRATCHA contains the address of the start queue
- ** entry which points to the next job.
- **
- ** Set Initiator mode.
- **
- ** (Target mode is left as an exercise for the reader)
- */
-
- SCR_CLR (SCR_TRG),
- 0,
- /*
- ** And try to select this target.
- */
- SCR_SEL_TBL_ATN ^ offsetof (struct dsb, select),
- PADDR (ungetjob),
- /*
- ** Now there are 4 possibilities:
- **
- ** (1) The ncr loses arbitration.
- ** This is ok, because it will try again,
- ** when the bus becomes idle.
- ** (But beware of the timeout function!)
- **
- ** (2) The ncr is reselected.
- ** Then the script processor takes the jump
- ** to the RESELECT label.
- **
- ** (3) The ncr wins arbitration.
- ** Then it will execute SCRIPTS instruction until
- ** the next instruction that checks SCSI phase.
- ** Then will stop and wait for selection to be
- ** complete or selection time-out to occur.
- **
- ** After having won arbitration, the ncr SCRIPTS
- ** processor is able to execute instructions while
- ** the SCSI core is performing SCSI selection. But
- ** some script instruction that is not waiting for
- ** a valid phase (or selection timeout) to occur
- ** breaks the selection procedure, by probably
- ** affecting timing requirements.
- ** So we have to wait immediately for the next phase
- ** or the selection to complete or time-out.
- */
-
- /*
- ** load the savep (saved pointer) into
- ** the actual data pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- /*
- ** Initialize the status registers
- */
- SCR_LOAD_REL (scr0, 4),
- offsetof (struct ccb, phys.header.status),
-
-}/*-------------------------< WF_SEL_DONE >----------------------*/,{
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- SIR_SEL_ATN_NO_MSG_OUT,
-}/*-------------------------< SEND_IDENT >----------------------*/,{
- /*
- ** Selection complete.
- ** Send the IDENTIFY and SIMPLE_TAG messages
- ** (and the M_X_SYNC_REQ / M_X_WIDE_REQ message)
- */
- SCR_MOVE_TBL ^ SCR_MSG_OUT,
- offsetof (struct dsb, smsg),
-}/*-------------------------< SELECT2 >----------------------*/,{
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** Set IMMEDIATE ARBITRATION if we have been given
- ** a hint to do so. (Some job to do after this one).
- */
- SCR_FROM_REG (HF_REG),
- 0,
- SCR_JUMPR ^ IFFALSE (MASK (HF_HINT_IARB, HF_HINT_IARB)),
- 8,
- SCR_REG_REG (scntl1, SCR_OR, IARB),
- 0,
-#endif
- /*
- ** Anticipate the COMMAND phase.
- ** This is the PHASE we expect at this point.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_COMMAND)),
- PADDR (sel_no_cmd),
-
-}/*-------------------------< COMMAND >--------------------*/,{
- /*
- ** ... and send the command
- */
- SCR_MOVE_TBL ^ SCR_COMMAND,
- offsetof (struct dsb, cmd),
-
-}/*-----------------------< DISPATCH >----------------------*/,{
- /*
- ** MSG_IN is the only phase that shall be
- ** entered at least once for each (re)selection.
- ** So we test it first.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR (msg_in),
- SCR_JUMP ^ IFTRUE (IF (SCR_DATA_OUT)),
- PADDR (datao_phase),
- SCR_JUMP ^ IFTRUE (IF (SCR_DATA_IN)),
- PADDR (datai_phase),
- SCR_JUMP ^ IFTRUE (IF (SCR_STATUS)),
- PADDR (status),
- SCR_JUMP ^ IFTRUE (IF (SCR_COMMAND)),
- PADDR (command),
- SCR_JUMP ^ IFTRUE (IF (SCR_MSG_OUT)),
- PADDRH (msg_out),
- /*
- * Discard as many illegal phases as
- * required and tell the C code about.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_OUT)),
- 16,
- SCR_MOVE_ABS (1) ^ SCR_ILG_OUT,
- NADDR (scratch),
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_OUT)),
- -16,
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_IN)),
- 16,
- SCR_MOVE_ABS (1) ^ SCR_ILG_IN,
- NADDR (scratch),
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_IN)),
- -16,
- SCR_INT,
- SIR_BAD_PHASE,
- SCR_JUMP,
- PADDR (dispatch),
-}/*---------------------< SEL_NO_CMD >----------------------*/,{
- /*
- ** The target does not switch to command
- ** phase after IDENTIFY has been sent.
- **
- ** If it stays in MSG OUT phase send it
- ** the IDENTIFY again.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
- PADDRH (resend_ident),
- /*
- ** If target does not switch to MSG IN phase
- ** and we sent a negotiation, assert the
- ** failure immediately.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR (dispatch),
- SCR_FROM_REG (HS_REG),
- 0,
- SCR_INT ^ IFTRUE (DATA (HS_NEGOTIATE)),
- SIR_NEGO_FAILED,
- /*
- ** Jump to dispatcher.
- */
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< INIT >------------------------*/,{
- /*
- ** Wait for the SCSI RESET signal to be
- ** inactive before restarting operations,
- ** since the chip may hang on SEL_ATN
- ** if SCSI RESET is active.
- */
- SCR_FROM_REG (sstat0),
- 0,
- SCR_JUMPR ^ IFTRUE (MASK (IRST, IRST)),
- -16,
- SCR_JUMP,
- PADDR (start),
-}/*-------------------------< CLRACK >----------------------*/,{
- /*
- ** Terminate possible pending message phase.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< DISP_STATUS >----------------------*/,{
- /*
- ** Anticipate STATUS phase.
- **
- ** Does spare 3 SCRIPTS instructions when we have
- ** completed the INPUT of the data.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_STATUS)),
- PADDR (status),
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< DATAI_DONE >-------------------*/,{
- /*
- * If the device wants us to send more data,
- * we must count the extra bytes.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_DATA_IN)),
- PADDRH (data_ovrun),
- /*
- ** If the SWIDE is not full, jump to dispatcher.
- ** We anticipate a STATUS phase.
- ** If we get later an IGNORE WIDE RESIDUE, we
- ** will alias it as a MODIFY DP (-1).
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMP ^ IFFALSE (MASK (WSR, WSR)),
- PADDR (disp_status),
- /*
- ** The SWIDE is full.
- ** Clear this condition.
- */
- SCR_REG_REG (scntl2, SCR_OR, WSR),
- 0,
- /*
- * We are expecting an IGNORE RESIDUE message
- * from the device, otherwise we are in data
- * overrun condition. Check against MSG_IN phase.
- */
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)),
- SIR_SWIDE_OVERRUN,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
- PADDR (disp_status),
- /*
- * We are in MSG_IN phase,
- * Read the first byte of the message.
- * If it is not an IGNORE RESIDUE message,
- * signal overrun and jump to message
- * processing.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin[0]),
- SCR_INT ^ IFFALSE (DATA (M_IGN_RESIDUE)),
- SIR_SWIDE_OVERRUN,
- SCR_JUMP ^ IFFALSE (DATA (M_IGN_RESIDUE)),
- PADDR (msg_in2),
-
- /*
- * We got the message we expected.
- * Read the 2nd byte, and jump to dispatcher.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin[1]),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP,
- PADDR (disp_status),
-
-}/*-------------------------< DATAO_DONE >-------------------*/,{
- /*
- * If the device wants us to send more data,
- * we must count the extra bytes.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_DATA_OUT)),
- PADDRH (data_ovrun),
- /*
- ** If the SODL is not full jump to dispatcher.
- ** We anticipate a MSG IN phase or a STATUS phase.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMP ^ IFFALSE (MASK (WSS, WSS)),
- PADDR (disp_status),
- /*
- ** The SODL is full, clear this condition.
- */
- SCR_REG_REG (scntl2, SCR_OR, WSS),
- 0,
- /*
- ** And signal a DATA UNDERRUN condition
- ** to the C code.
- */
- SCR_INT,
- SIR_SODL_UNDERRUN,
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< IGN_I_W_R_MSG >--------------*/,{
- /*
- ** We jump here from the phase mismatch interrupt,
- ** When we have a SWIDE and the device has presented
- ** a IGNORE WIDE RESIDUE message on the BUS.
- ** We just have to throw away this message and then
- ** to jump to dispatcher.
- */
- SCR_MOVE_ABS (2) ^ SCR_MSG_IN,
- NADDR (scratch),
- /*
- ** Clear ACK and jump to dispatcher.
- */
- SCR_JUMP,
- PADDR (clrack),
-
-}/*-------------------------< DATAI_PHASE >------------------*/,{
- SCR_RETURN,
- 0,
-}/*-------------------------< DATAO_PHASE >------------------*/,{
- /*
- ** Patch for 53c1010_66 only - to allow A0 part
- ** to operate properly in a 33MHz PCI bus.
- **
- ** SCR_REG_REG(scntl4, SCR_OR, 0x0c),
- ** 0,
- */
- SCR_NO_OP,
- 0,
- SCR_RETURN,
- 0,
-}/*-------------------------< MSG_IN >--------------------*/,{
- /*
- ** Get the first byte of the message.
- **
- ** The script processor doesn't negate the
- ** ACK signal after this transfer.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin[0]),
-}/*-------------------------< MSG_IN2 >--------------------*/,{
- /*
- ** Check first against 1 byte messages
- ** that we handle from SCRIPTS.
- */
- SCR_JUMP ^ IFTRUE (DATA (M_COMPLETE)),
- PADDR (complete),
- SCR_JUMP ^ IFTRUE (DATA (M_DISCONNECT)),
- PADDR (disconnect),
- SCR_JUMP ^ IFTRUE (DATA (M_SAVE_DP)),
- PADDR (save_dp),
- SCR_JUMP ^ IFTRUE (DATA (M_RESTORE_DP)),
- PADDR (restore_dp),
- /*
- ** We handle all other messages from the
- ** C code, so no need to waste on-chip RAM
- ** for those ones.
- */
- SCR_JUMP,
- PADDRH (msg_in_etc),
-
-}/*-------------------------< STATUS >--------------------*/,{
- /*
- ** get the status
- */
- SCR_MOVE_ABS (1) ^ SCR_STATUS,
- NADDR (scratch),
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** If STATUS is not GOOD, clear IMMEDIATE ARBITRATION,
- ** since we may have to tamper the start queue from
- ** the C code.
- */
- SCR_JUMPR ^ IFTRUE (DATA (S_GOOD)),
- 8,
- SCR_REG_REG (scntl1, SCR_AND, ~IARB),
- 0,
-#endif
- /*
- ** save status to scsi_status.
- ** mark as complete.
- */
- SCR_TO_REG (SS_REG),
- 0,
- SCR_LOAD_REG (HS_REG, HS_COMPLETE),
- 0,
- /*
- ** Anticipate the MESSAGE PHASE for
- ** the TASK COMPLETE message.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR (msg_in),
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< COMPLETE >-----------------*/,{
- /*
- ** Complete message.
- **
- ** Copy the data pointer to LASTP in header.
- */
- SCR_STORE_REL (temp, 4),
- offsetof (struct ccb, phys.header.lastp),
- /*
- ** When we terminate the cycle by clearing ACK,
- ** the target may disconnect immediately.
- **
- ** We don't want to be told of an
- ** "unexpected disconnect",
- ** so we disable this feature.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- /*
- ** Terminate cycle ...
- */
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- /*
- ** ... and wait for the disconnect.
- */
- SCR_WAIT_DISC,
- 0,
-}/*-------------------------< COMPLETE2 >-----------------*/,{
- /*
- ** Save host status to header.
- */
- SCR_STORE_REL (scr0, 4),
- offsetof (struct ccb, phys.header.status),
-
-#ifdef SCSI_NCR_PCIQ_MAY_REORDER_WRITES
- /*
- ** Some bridges may reorder DMA writes to memory.
- ** We donnot want the CPU to deal with completions
- ** without all the posted write having been flushed
- ** to memory. This DUMMY READ should flush posted
- ** buffers prior to the CPU having to deal with
- ** completions.
- */
- SCR_LOAD_REL (scr0, 4), /* DUMMY READ */
- offsetof (struct ccb, phys.header.status),
-#endif
- /*
- ** If command resulted in not GOOD status,
- ** call the C code if needed.
- */
- SCR_FROM_REG (SS_REG),
- 0,
- SCR_CALL ^ IFFALSE (DATA (S_GOOD)),
- PADDRH (bad_status),
-
- /*
- ** If we performed an auto-sense, call
- ** the C code to synchronyze task aborts
- ** with UNIT ATTENTION conditions.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- SCR_INT ^ IFTRUE (MASK (HF_AUTO_SENSE, HF_AUTO_SENSE)),
- SIR_AUTO_SENSE_DONE,
-
-}/*------------------------< DONE >-----------------*/,{
-#ifdef SCSI_NCR_PCIQ_SYNC_ON_INTR
- /*
- ** It seems that some bridges flush everything
- ** when the INTR line is raised. For these ones,
- ** we can just ensure that the INTR line will be
- ** raised before each completion. So, if it happens
- ** that we have been faster that the CPU, we just
- ** have to synchronize with it. A dummy programmed
- ** interrupt will do the trick.
- ** Note that we overlap at most 1 IO with the CPU
- ** in this situation and that the IRQ line must not
- ** be shared.
- */
- SCR_FROM_REG (istat),
- 0,
- SCR_INT ^ IFTRUE (MASK (INTF, INTF)),
- SIR_DUMMY_INTERRUPT,
-#endif
- /*
- ** Copy the DSA to the DONE QUEUE and
- ** signal completion to the host.
- ** If we are interrupted between DONE
- ** and DONE_END, we must reset, otherwise
- ** the completed CCB will be lost.
- */
- SCR_STORE_ABS (dsa, 4),
- PADDRH (saved_dsa),
- SCR_LOAD_ABS (dsa, 4),
- PADDRH (done_pos),
- SCR_LOAD_ABS (scratcha, 4),
- PADDRH (saved_dsa),
- SCR_STORE_REL (scratcha, 4),
- 0,
- /*
- ** The instruction below reads the DONE QUEUE next
- ** free position from memory.
- ** In addition it ensures that all PCI posted writes
- ** are flushed and so the DSA value of the done
- ** CCB is visible by the CPU before INTFLY is raised.
- */
- SCR_LOAD_REL (temp, 4),
- 4,
- SCR_INT_FLY,
- 0,
- SCR_STORE_ABS (temp, 4),
- PADDRH (done_pos),
-}/*------------------------< DONE_END >-----------------*/,{
- SCR_JUMP,
- PADDR (start),
-
-}/*-------------------------< SAVE_DP >------------------*/,{
- /*
- ** Clear ACK immediately.
- ** No need to delay it.
- */
- SCR_CLR (SCR_ACK),
- 0,
- /*
- ** Keep track we received a SAVE DP, so
- ** we will switch to the other PM context
- ** on the next PM since the DP may point
- ** to the current PM context.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_DP_SAVED),
- 0,
- /*
- ** SAVE_DP message:
- ** Copy the data pointer to SAVEP in header.
- */
- SCR_STORE_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- SCR_JUMP,
- PADDR (dispatch),
-}/*-------------------------< RESTORE_DP >---------------*/,{
- /*
- ** RESTORE_DP message:
- ** Copy SAVEP in header to actual data pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- SCR_JUMP,
- PADDR (clrack),
-
-}/*-------------------------< DISCONNECT >---------------*/,{
- /*
- ** DISCONNECTing ...
- **
- ** disable the "unexpected disconnect" feature,
- ** and remove the ACK signal.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- /*
- ** Wait for the disconnect.
- */
- SCR_WAIT_DISC,
- 0,
- /*
- ** Status is: DISCONNECTED.
- */
- SCR_LOAD_REG (HS_REG, HS_DISCONNECT),
- 0,
- /*
- ** Save host status to header.
- */
- SCR_STORE_REL (scr0, 4),
- offsetof (struct ccb, phys.header.status),
- /*
- ** If QUIRK_AUTOSAVE is set,
- ** do an "save pointer" operation.
- */
- SCR_FROM_REG (QU_REG),
- 0,
- SCR_JUMP ^ IFFALSE (MASK (QUIRK_AUTOSAVE, QUIRK_AUTOSAVE)),
- PADDR (start),
- /*
- ** like SAVE_DP message:
- ** Remember we saved the data pointer.
- ** Copy data pointer to SAVEP in header.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_DP_SAVED),
- 0,
- SCR_STORE_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- SCR_JUMP,
- PADDR (start),
-
-}/*-------------------------< IDLE >------------------------*/,{
- /*
- ** Nothing to do?
- ** Wait for reselect.
- ** This NOP will be patched with LED OFF
- ** SCR_REG_REG (gpreg, SCR_OR, 0x01)
- */
- SCR_NO_OP,
- 0,
-#ifdef SCSI_NCR_IARB_SUPPORT
- SCR_JUMPR,
- 8,
-#endif
-}/*-------------------------< UNGETJOB >-----------------*/,{
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** Set IMMEDIATE ARBITRATION, for the next time.
- ** This will give us better chance to win arbitration
- ** for the job we just wanted to do.
- */
- SCR_REG_REG (scntl1, SCR_OR, IARB),
- 0,
-#endif
- /*
- ** We are not able to restart the SCRIPTS if we are
- ** interrupted and these instruction haven't been
- ** all executed. BTW, this is very unlikely to
- ** happen, but we check that from the C code.
- */
- SCR_LOAD_REG (dsa, 0xff),
- 0,
- SCR_STORE_ABS (scratcha, 4),
- PADDRH (startpos),
-}/*-------------------------< RESELECT >--------------------*/,{
- /*
- ** make the host status invalid.
- */
- SCR_CLR (SCR_TRG),
- 0,
- /*
- ** Sleep waiting for a reselection.
- ** If SIGP is set, special treatment.
- **
- ** Zu allem bereit ..
- */
- SCR_WAIT_RESEL,
- PADDR(start),
-}/*-------------------------< RESELECTED >------------------*/,{
- /*
- ** This NOP will be patched with LED ON
- ** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
- */
- SCR_NO_OP,
- 0,
- /*
- ** load the target id into the sdid
- */
- SCR_REG_SFBR (ssid, SCR_AND, 0x8F),
- 0,
- SCR_TO_REG (sdid),
- 0,
- /*
- ** load the target control block address
- */
- SCR_LOAD_ABS (dsa, 4),
- PADDRH (targtbl),
- SCR_SFBR_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_AND, 0x3c),
- 0,
- SCR_LOAD_REL (dsa, 4),
- 0,
- /*
- ** Load the synchronous transfer registers.
- */
- SCR_LOAD_REL (scntl3, 1),
- offsetof(struct tcb, wval),
- SCR_LOAD_REL (sxfer, 1),
- offsetof(struct tcb, sval),
-}/*-------------------------< RESEL_SCNTL4 >------------------*/,{
- /*
- ** Write with uval value. Patch if device
- ** does not support Ultra3.
- **
- ** SCR_LOAD_REL (scntl4, 1),
- ** offsetof(struct tcb, uval),
- */
-
- SCR_NO_OP,
- 0,
- /*
- * We expect MESSAGE IN phase.
- * If not, get help from the C code.
- */
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)),
- SIR_RESEL_NO_MSG_IN,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin),
-
- /*
- * If IDENTIFY LUN #0, use a faster path
- * to find the LCB structure.
- */
- SCR_JUMPR ^ IFTRUE (MASK (0x80, 0xbf)),
- 56,
- /*
- * If message isn't an IDENTIFY,
- * tell the C code about.
- */
- SCR_INT ^ IFFALSE (MASK (0x80, 0x80)),
- SIR_RESEL_NO_IDENTIFY,
- /*
- * It is an IDENTIFY message,
- * Load the LUN control block address.
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct tcb, b_luntbl),
- SCR_SFBR_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_AND, 0xfc),
- 0,
- SCR_LOAD_REL (dsa, 4),
- 0,
- SCR_JUMPR,
- 8,
- /*
- ** LUN 0 special case (but usual one :))
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct tcb, b_lun0),
-
- /*
- ** Load the reselect task action for this LUN.
- ** Load the tasks DSA array for this LUN.
- ** Call the action.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof(struct lcb, resel_task),
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct lcb, b_tasktbl),
- SCR_RETURN,
- 0,
-}/*-------------------------< RESEL_TAG >-------------------*/,{
- /*
- ** ACK the IDENTIFY or TAG previously received
- */
-
- SCR_CLR (SCR_ACK),
- 0,
- /*
- ** Read IDENTIFY + SIMPLE + TAG using a single MOVE.
- ** Agressive optimization, is'nt it?
- ** No need to test the SIMPLE TAG message, since the
- ** driver only supports conformant devices for tags. ;-)
- */
- SCR_MOVE_ABS (2) ^ SCR_MSG_IN,
- NADDR (msgin),
- /*
- ** Read the TAG from the SIDL.
- ** Still an aggressive optimization. ;-)
- ** Compute the CCB indirect jump address which
- ** is (#TAG*2 & 0xfc) due to tag numbering using
- ** 1,3,5..MAXTAGS*2+1 actual values.
- */
- SCR_REG_SFBR (sidl, SCR_SHL, 0),
- 0,
-#if MAX_TASKS*4 > 512
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 2),
- 0,
- SCR_REG_REG (sfbr, SCR_SHL, 0),
- 0,
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 1),
- 0,
-#elif MAX_TASKS*4 > 256
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 1),
- 0,
-#endif
- /*
- ** Retrieve the DSA of this task.
- ** JUMP indirectly to the restart point of the CCB.
- */
- SCR_SFBR_REG (dsa, SCR_AND, 0xfc),
- 0,
-}/*-------------------------< RESEL_GO >-------------------*/,{
- SCR_LOAD_REL (dsa, 4),
- 0,
- SCR_LOAD_REL (temp, 4),
- offsetof(struct ccb, phys.header.go.restart),
- SCR_RETURN,
- 0,
- /* In normal situations we branch to RESEL_DSA */
-}/*-------------------------< RESEL_NOTAG >-------------------*/,{
- /*
- ** JUMP indirectly to the restart point of the CCB.
- */
- SCR_JUMP,
- PADDR (resel_go),
-
-}/*-------------------------< RESEL_DSA >-------------------*/,{
- /*
- ** Ack the IDENTIFY or TAG previously received.
- */
- SCR_CLR (SCR_ACK),
- 0,
- /*
- ** load the savep (saved pointer) into
- ** the actual data pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- /*
- ** Initialize the status registers
- */
- SCR_LOAD_REL (scr0, 4),
- offsetof (struct ccb, phys.header.status),
- /*
- ** Jump to dispatcher.
- */
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< DATA_IN >--------------------*/,{
-/*
-** Because the size depends on the
-** #define MAX_SCATTER parameter,
-** it is filled in at runtime.
-**
-** ##===========< i=0; i<MAX_SCATTER >=========
-** || SCR_CHMOV_TBL ^ SCR_DATA_IN,
-** || offsetof (struct dsb, data[ i]),
-** ##==========================================
-**
-**---------------------------------------------------------
-*/
-0
-}/*-------------------------< DATA_IN2 >-------------------*/,{
- SCR_CALL,
- PADDR (datai_done),
- SCR_JUMP,
- PADDRH (data_ovrun),
-}/*-------------------------< DATA_OUT >--------------------*/,{
-/*
-** Because the size depends on the
-** #define MAX_SCATTER parameter,
-** it is filled in at runtime.
-**
-** ##===========< i=0; i<MAX_SCATTER >=========
-** || SCR_CHMOV_TBL ^ SCR_DATA_OUT,
-** || offsetof (struct dsb, data[ i]),
-** ##==========================================
-**
-**---------------------------------------------------------
-*/
-0
-}/*-------------------------< DATA_OUT2 >-------------------*/,{
- SCR_CALL,
- PADDR (datao_done),
- SCR_JUMP,
- PADDRH (data_ovrun),
-
-}/*-------------------------< PM0_DATA >--------------------*/,{
- /*
- ** Read our host flags to SFBR, so we will be able
- ** to check against the data direction we expect.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- ** Check against actual DATA PHASE.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
- PADDR (pm0_data_out),
- /*
- ** Actual phase is DATA IN.
- ** Check against expected direction.
- */
- SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDRH (data_ovrun),
- /*
- ** Keep track we are moving data from the
- ** PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0),
- 0,
- /*
- ** Move the data to memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct ccb, phys.pm0.sg),
- SCR_JUMP,
- PADDR (pm0_data_end),
-}/*-------------------------< PM0_DATA_OUT >----------------*/,{
- /*
- ** Actual phase is DATA OUT.
- ** Check against expected direction.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDRH (data_ovrun),
- /*
- ** Keep track we are moving data from the
- ** PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0),
- 0,
- /*
- ** Move the data from memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_OUT,
- offsetof (struct ccb, phys.pm0.sg),
-}/*-------------------------< PM0_DATA_END >----------------*/,{
- /*
- ** Clear the flag that told we were moving
- ** data from the PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM0)),
- 0,
- /*
- ** Return to the previous DATA script which
- ** is guaranteed by design (if no bug) to be
- ** the main DATA script for this transfer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.pm0.ret),
- SCR_RETURN,
- 0,
-}/*-------------------------< PM1_DATA >--------------------*/,{
- /*
- ** Read our host flags to SFBR, so we will be able
- ** to check against the data direction we expect.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- ** Check against actual DATA PHASE.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
- PADDR (pm1_data_out),
- /*
- ** Actual phase is DATA IN.
- ** Check against expected direction.
- */
- SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDRH (data_ovrun),
- /*
- ** Keep track we are moving data from the
- ** PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1),
- 0,
- /*
- ** Move the data to memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct ccb, phys.pm1.sg),
- SCR_JUMP,
- PADDR (pm1_data_end),
-}/*-------------------------< PM1_DATA_OUT >----------------*/,{
- /*
- ** Actual phase is DATA OUT.
- ** Check against expected direction.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDRH (data_ovrun),
- /*
- ** Keep track we are moving data from the
- ** PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1),
- 0,
- /*
- ** Move the data from memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_OUT,
- offsetof (struct ccb, phys.pm1.sg),
-}/*-------------------------< PM1_DATA_END >----------------*/,{
- /*
- ** Clear the flag that told we were moving
- ** data from the PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM1)),
- 0,
- /*
- ** Return to the previous DATA script which
- ** is guaranteed by design (if no bug) to be
- ** the main DATA script for this transfer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.pm1.ret),
- SCR_RETURN,
- 0,
-}/*---------------------------------------------------------*/
-};
-
-
-static struct scripth scripth0 __initdata = {
-/*------------------------< START64 >-----------------------*/{
- /*
- ** SCRIPT entry point for the 895A and the 896.
- ** For now, there is no specific stuff for that
- ** chip at this point, but this may come.
- */
- SCR_JUMP,
- PADDR (init),
-}/*-------------------------< NO_DATA >-------------------*/,{
- SCR_JUMP,
- PADDRH (data_ovrun),
-}/*-----------------------< SEL_FOR_ABORT >------------------*/,{
- /*
- ** We are jumped here by the C code, if we have
- ** some target to reset or some disconnected
- ** job to abort. Since error recovery is a serious
- ** busyness, we will really reset the SCSI BUS, if
- ** case of a SCSI interrupt occurring in this path.
- */
-
- /*
- ** Set initiator mode.
- */
- SCR_CLR (SCR_TRG),
- 0,
- /*
- ** And try to select this target.
- */
- SCR_SEL_TBL_ATN ^ offsetof (struct ncb, abrt_sel),
- PADDR (reselect),
-
- /*
- ** Wait for the selection to complete or
- ** the selection to time out.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- -8,
- /*
- ** Call the C code.
- */
- SCR_INT,
- SIR_TARGET_SELECTED,
- /*
- ** The C code should let us continue here.
- ** Send the 'kiss of death' message.
- ** We expect an immediate disconnect once
- ** the target has eaten the message.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_MOVE_TBL ^ SCR_MSG_OUT,
- offsetof (struct ncb, abrt_tbl),
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- SCR_WAIT_DISC,
- 0,
- /*
- ** Tell the C code that we are done.
- */
- SCR_INT,
- SIR_ABORT_SENT,
-}/*-----------------------< SEL_FOR_ABORT_1 >--------------*/,{
- /*
- ** Jump at scheduler.
- */
- SCR_JUMP,
- PADDR (start),
-
-}/*------------------------< SELECT_NO_ATN >-----------------*/,{
- /*
- ** Set Initiator mode.
- ** And try to select this target without ATN.
- */
-
- SCR_CLR (SCR_TRG),
- 0,
- SCR_SEL_TBL ^ offsetof (struct dsb, select),
- PADDR (ungetjob),
- /*
- ** load the savep (saved pointer) into
- ** the actual data pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- /*
- ** Initialize the status registers
- */
- SCR_LOAD_REL (scr0, 4),
- offsetof (struct ccb, phys.header.status),
-
-}/*------------------------< WF_SEL_DONE_NO_ATN >-----------------*/,{
- /*
- ** Wait immediately for the next phase or
- ** the selection to complete or time-out.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- 0,
- SCR_JUMP,
- PADDR (select2),
-
-}/*-------------------------< MSG_IN_ETC >--------------------*/,{
- /*
- ** If it is an EXTENDED (variable size message)
- ** Handle it.
- */
- SCR_JUMP ^ IFTRUE (DATA (M_EXTENDED)),
- PADDRH (msg_extended),
- /*
- ** Let the C code handle any other
- ** 1 byte message.
- */
- SCR_JUMP ^ IFTRUE (MASK (0x00, 0xf0)),
- PADDRH (msg_received),
- SCR_JUMP ^ IFTRUE (MASK (0x10, 0xf0)),
- PADDRH (msg_received),
- /*
- ** We donnot handle 2 bytes messages from SCRIPTS.
- ** So, let the C code deal with these ones too.
- */
- SCR_JUMP ^ IFFALSE (MASK (0x20, 0xf0)),
- PADDRH (msg_weird_seen),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin[1]),
- SCR_JUMP,
- PADDRH (msg_received),
-
-}/*-------------------------< MSG_RECEIVED >--------------------*/,{
- SCR_LOAD_REL (scratcha, 4), /* DUMMY READ */
- 0,
- SCR_INT,
- SIR_MSG_RECEIVED,
-
-}/*-------------------------< MSG_WEIRD_SEEN >------------------*/,{
- SCR_LOAD_REL (scratcha, 4), /* DUMMY READ */
- 0,
- SCR_INT,
- SIR_MSG_WEIRD,
-
-}/*-------------------------< MSG_EXTENDED >--------------------*/,{
- /*
- ** Clear ACK and get the next byte
- ** assumed to be the message length.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (msgin[1]),
- /*
- ** Try to catch some unlikely situations as 0 length
- ** or too large the length.
- */
- SCR_JUMP ^ IFTRUE (DATA (0)),
- PADDRH (msg_weird_seen),
- SCR_TO_REG (scratcha),
- 0,
- SCR_REG_REG (sfbr, SCR_ADD, (256-8)),
- 0,
- SCR_JUMP ^ IFTRUE (CARRYSET),
- PADDRH (msg_weird_seen),
- /*
- ** We donnot handle extended messages from SCRIPTS.
- ** Read the amount of data correponding to the
- ** message length and call the C code.
- */
- SCR_STORE_REL (scratcha, 1),
- offsetof (struct dsb, smsg_ext.size),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_TBL ^ SCR_MSG_IN,
- offsetof (struct dsb, smsg_ext),
- SCR_JUMP,
- PADDRH (msg_received),
-
-}/*-------------------------< MSG_BAD >------------------*/,{
- /*
- ** unimplemented message - reject it.
- */
- SCR_INT,
- SIR_REJECT_TO_SEND,
- SCR_SET (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR (clrack),
-
-}/*-------------------------< MSG_WEIRD >--------------------*/,{
- /*
- ** weird message received
- ** ignore all MSG IN phases and reject it.
- */
- SCR_INT,
- SIR_REJECT_TO_SEND,
- SCR_SET (SCR_ATN),
- 0,
-}/*-------------------------< MSG_WEIRD1 >--------------------*/,{
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
- PADDR (dispatch),
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- NADDR (scratch),
- SCR_JUMP,
- PADDRH (msg_weird1),
-}/*-------------------------< WDTR_RESP >----------------*/,{
- /*
- ** let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDRH (nego_bad_phase),
-
-}/*-------------------------< SEND_WDTR >----------------*/,{
- /*
- ** Send the M_X_WIDE_REQ
- */
- SCR_MOVE_ABS (4) ^ SCR_MSG_OUT,
- NADDR (msgout),
- SCR_JUMP,
- PADDRH (msg_out_done),
-
-}/*-------------------------< SDTR_RESP >-------------*/,{
- /*
- ** let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDRH (nego_bad_phase),
-
-}/*-------------------------< SEND_SDTR >-------------*/,{
- /*
- ** Send the M_X_SYNC_REQ
- */
- SCR_MOVE_ABS (5) ^ SCR_MSG_OUT,
- NADDR (msgout),
- SCR_JUMP,
- PADDRH (msg_out_done),
-
-}/*-------------------------< PPR_RESP >-------------*/,{
- /*
- ** let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDRH (nego_bad_phase),
-
-}/*-------------------------< SEND_PPR >-------------*/,{
- /*
- ** Send the M_X_PPR_REQ
- */
- SCR_MOVE_ABS (8) ^ SCR_MSG_OUT,
- NADDR (msgout),
- SCR_JUMP,
- PADDRH (msg_out_done),
-
-}/*-------------------------< NEGO_BAD_PHASE >------------*/,{
- SCR_INT,
- SIR_NEGO_PROTO,
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< MSG_OUT >-------------------*/,{
- /*
- ** The target requests a message.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
- NADDR (msgout),
- /*
- ** ... wait for the next phase
- ** if it's a message out, send it again, ...
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
- PADDRH (msg_out),
-}/*-------------------------< MSG_OUT_DONE >--------------*/,{
- /*
- ** ... else clear the message ...
- */
- SCR_INT,
- SIR_MSG_OUT_DONE,
- /*
- ** ... and process the next phase
- */
- SCR_JUMP,
- PADDR (dispatch),
-
-}/*-------------------------< DATA_OVRUN >-----------------------*/,{
- /*
- * Use scratcha to count the extra bytes.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDRH (zero),
-}/*-------------------------< DATA_OVRUN1 >----------------------*/,{
- /*
- * The target may want to transfer too much data.
- *
- * If phase is DATA OUT write 1 byte and count it.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_OUT)),
- 16,
- SCR_CHMOV_ABS (1) ^ SCR_DATA_OUT,
- NADDR (scratch),
- SCR_JUMP,
- PADDRH (data_ovrun2),
- /*
- * If WSR is set, clear this condition, and
- * count this byte.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMPR ^ IFFALSE (MASK (WSR, WSR)),
- 16,
- SCR_REG_REG (scntl2, SCR_OR, WSR),
- 0,
- SCR_JUMP,
- PADDRH (data_ovrun2),
- /*
- * Finally check against DATA IN phase.
- * Signal data overrun to the C code
- * and jump to dispatcher if not so.
- * Read 1 byte otherwise and count it.
- */
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_DATA_IN)),
- 16,
- SCR_INT,
- SIR_DATA_OVERRUN,
- SCR_JUMP,
- PADDR (dispatch),
- SCR_CHMOV_ABS (1) ^ SCR_DATA_IN,
- NADDR (scratch),
-}/*-------------------------< DATA_OVRUN2 >----------------------*/,{
- /*
- * Count this byte.
- * This will allow to return a negative
- * residual to user.
- */
- SCR_REG_REG (scratcha, SCR_ADD, 0x01),
- 0,
- SCR_REG_REG (scratcha1, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (scratcha2, SCR_ADDC, 0),
- 0,
- /*
- * .. and repeat as required.
- */
- SCR_JUMP,
- PADDRH (data_ovrun1),
-
-}/*-------------------------< ABORT_RESEL >----------------*/,{
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- /*
- ** send the abort/abortag/reset message
- ** we expect an immediate disconnect
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
- NADDR (msgout),
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- SCR_WAIT_DISC,
- 0,
- SCR_INT,
- SIR_RESEL_ABORTED,
- SCR_JUMP,
- PADDR (start),
-}/*-------------------------< RESEND_IDENT >-------------------*/,{
- /*
- ** The target stays in MSG OUT phase after having acked
- ** Identify [+ Tag [+ Extended message ]]. Targets shall
- ** behave this way on parity error.
- ** We must send it again all the messages.
- */
- SCR_SET (SCR_ATN), /* Shall be asserted 2 deskew delays before the */
- 0, /* 1rst ACK = 90 ns. Hope the NCR is'nt too fast */
- SCR_JUMP,
- PADDR (send_ident),
-}/*-------------------------< IDENT_BREAK >-------------------*/,{
- SCR_CLR (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR (select2),
-}/*-------------------------< IDENT_BREAK_ATN >----------------*/,{
- SCR_SET (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR (select2),
-}/*-------------------------< SDATA_IN >-------------------*/,{
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct dsb, sense),
- SCR_CALL,
- PADDR (datai_done),
- SCR_JUMP,
- PADDRH (data_ovrun),
-}/*-------------------------< DATA_IO >--------------------*/,{
- /*
- ** We jump here if the data direction was unknown at the
- ** time we had to queue the command to the scripts processor.
- ** Pointers had been set as follow in this situation:
- ** savep --> DATA_IO
- ** lastp --> start pointer when DATA_IN
- ** goalp --> goal pointer when DATA_IN
- ** wlastp --> start pointer when DATA_OUT
- ** wgoalp --> goal pointer when DATA_OUT
- ** This script sets savep/lastp/goalp according to the
- ** direction chosen by the target.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_DATA_OUT)),
- PADDRH(data_io_out),
-}/*-------------------------< DATA_IO_COM >-----------------*/,{
- /*
- ** Direction is DATA IN.
- ** Warning: we jump here, even when phase is DATA OUT.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.lastp),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.savep),
-
- /*
- ** Jump to the SCRIPTS according to actual direction.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct ccb, phys.header.savep),
- SCR_RETURN,
- 0,
-}/*-------------------------< DATA_IO_OUT >-----------------*/,{
- /*
- ** Direction is DATA OUT.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_DATA_IN)),
- 0,
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.wlastp),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.lastp),
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.wgoalp),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct ccb, phys.header.goalp),
- SCR_JUMP,
- PADDRH(data_io_com),
-
-}/*-------------------------< RESEL_BAD_LUN >---------------*/,{
- /*
- ** Message is an IDENTIFY, but lun is unknown.
- ** Signal problem to C code for logging the event.
- ** Send a M_ABORT to clear all pending tasks.
- */
- SCR_INT,
- SIR_RESEL_BAD_LUN,
- SCR_JUMP,
- PADDRH (abort_resel),
-}/*-------------------------< BAD_I_T_L >------------------*/,{
- /*
- ** We donnot have a task for that I_T_L.
- ** Signal problem to C code for logging the event.
- ** Send a M_ABORT message.
- */
- SCR_INT,
- SIR_RESEL_BAD_I_T_L,
- SCR_JUMP,
- PADDRH (abort_resel),
-}/*-------------------------< BAD_I_T_L_Q >----------------*/,{
- /*
- ** We donnot have a task that matches the tag.
- ** Signal problem to C code for logging the event.
- ** Send a M_ABORTTAG message.
- */
- SCR_INT,
- SIR_RESEL_BAD_I_T_L_Q,
- SCR_JUMP,
- PADDRH (abort_resel),
-}/*-------------------------< BAD_STATUS >-----------------*/,{
- /*
- ** Anything different from INTERMEDIATE
- ** CONDITION MET should be a bad SCSI status,
- ** given that GOOD status has already been tested.
- ** Call the C code.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDRH (startpos),
- SCR_INT ^ IFFALSE (DATA (S_COND_MET)),
- SIR_BAD_STATUS,
- SCR_RETURN,
- 0,
-
-}/*-------------------------< TWEAK_PMJ >------------------*/,{
- /*
- ** Disable PM handling from SCRIPTS for the data phase
- ** and so force PM to be handled from C code if HF_PM_TO_C
- ** flag is set.
- */
- SCR_FROM_REG(HF_REG),
- 0,
- SCR_JUMPR ^ IFTRUE (MASK (HF_PM_TO_C, HF_PM_TO_C)),
- 16,
- SCR_REG_REG (ccntl0, SCR_OR, ENPMJ),
- 0,
- SCR_RETURN,
- 0,
- SCR_REG_REG (ccntl0, SCR_AND, (~ENPMJ)),
- 0,
- SCR_RETURN,
- 0,
-
-}/*-------------------------< PM_HANDLE >------------------*/,{
- /*
- ** Phase mismatch handling.
- **
- ** Since we have to deal with 2 SCSI data pointers
- ** (current and saved), we need at least 2 contexts.
- ** Each context (pm0 and pm1) has a saved area, a
- ** SAVE mini-script and a DATA phase mini-script.
- */
- /*
- ** Get the PM handling flags.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- ** If no flags (1rst PM for example), avoid
- ** all the below heavy flags testing.
- ** This makes the normal case a bit faster.
- */
- SCR_JUMP ^ IFTRUE (MASK (0, (HF_IN_PM0 | HF_IN_PM1 | HF_DP_SAVED))),
- PADDRH (pm_handle1),
- /*
- ** If we received a SAVE DP, switch to the
- ** other PM context since the savep may point
- ** to the current PM context.
- */
- SCR_JUMPR ^ IFFALSE (MASK (HF_DP_SAVED, HF_DP_SAVED)),
- 8,
- SCR_REG_REG (sfbr, SCR_XOR, HF_ACT_PM),
- 0,
- /*
- ** If we have been interrupt in a PM DATA mini-script,
- ** we take the return address from the corresponding
- ** saved area.
- ** This ensure the return address always points to the
- ** main DATA script for this transfer.
- */
- SCR_JUMP ^ IFTRUE (MASK (0, (HF_IN_PM0 | HF_IN_PM1))),
- PADDRH (pm_handle1),
- SCR_JUMPR ^ IFFALSE (MASK (HF_IN_PM0, HF_IN_PM0)),
- 16,
- SCR_LOAD_REL (ia, 4),
- offsetof(struct ccb, phys.pm0.ret),
- SCR_JUMP,
- PADDRH (pm_save),
- SCR_LOAD_REL (ia, 4),
- offsetof(struct ccb, phys.pm1.ret),
- SCR_JUMP,
- PADDRH (pm_save),
-}/*-------------------------< PM_HANDLE1 >-----------------*/,{
- /*
- ** Normal case.
- ** Update the return address so that it
- ** will point after the interrupted MOVE.
- */
- SCR_REG_REG (ia, SCR_ADD, 8),
- 0,
- SCR_REG_REG (ia1, SCR_ADDC, 0),
- 0,
-}/*-------------------------< PM_SAVE >--------------------*/,{
- /*
- ** Clear all the flags that told us if we were
- ** interrupted in a PM DATA mini-script and/or
- ** we received a SAVE DP.
- */
- SCR_SFBR_REG (HF_REG, SCR_AND, (~(HF_IN_PM0|HF_IN_PM1|HF_DP_SAVED))),
- 0,
- /*
- ** Choose the current PM context.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_ACT_PM, HF_ACT_PM)),
- PADDRH (pm1_save),
-}/*-------------------------< PM0_SAVE >-------------------*/,{
- SCR_STORE_REL (ia, 4),
- offsetof(struct ccb, phys.pm0.ret),
- /*
- ** If WSR bit is set, either UA and RBC may
- ** have to be changed whatever the device wants
- ** to ignore this residue ot not.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_CALL ^ IFTRUE (MASK (WSR, WSR)),
- PADDRH (pm_wsr_handle),
- /*
- ** Save the remaining byte count, the updated
- ** address and the return address.
- */
- SCR_STORE_REL (rbc, 4),
- offsetof(struct ccb, phys.pm0.sg.size),
- SCR_STORE_REL (ua, 4),
- offsetof(struct ccb, phys.pm0.sg.addr),
- /*
- ** Set the current pointer at the PM0 DATA mini-script.
- */
- SCR_LOAD_ABS (temp, 4),
- PADDRH (pm0_data_addr),
- SCR_JUMP,
- PADDR (dispatch),
-}/*-------------------------< PM1_SAVE >-------------------*/,{
- SCR_STORE_REL (ia, 4),
- offsetof(struct ccb, phys.pm1.ret),
- /*
- ** If WSR bit is set, either UA and RBC may
- ** have been changed whatever the device wants
- ** to ignore this residue or not.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_CALL ^ IFTRUE (MASK (WSR, WSR)),
- PADDRH (pm_wsr_handle),
- /*
- ** Save the remaining byte count, the updated
- ** address and the return address.
- */
- SCR_STORE_REL (rbc, 4),
- offsetof(struct ccb, phys.pm1.sg.size),
- SCR_STORE_REL (ua, 4),
- offsetof(struct ccb, phys.pm1.sg.addr),
- /*
- ** Set the current pointer at the PM1 DATA mini-script.
- */
- SCR_LOAD_ABS (temp, 4),
- PADDRH (pm1_data_addr),
- SCR_JUMP,
- PADDR (dispatch),
-}/*--------------------------< PM_WSR_HANDLE >-----------------------*/,{
- /*
- * Phase mismatch handling from SCRIPT with WSR set.
- * Such a condition can occur if the chip wants to
- * execute a CHMOV(size > 1) when the WSR bit is
- * set and the target changes PHASE.
- */
-#ifdef SYM_DEBUG_PM_WITH_WSR
- /*
- * Some debugging may still be needed.:)
- */
- SCR_INT,
- SIR_PM_WITH_WSR,
-#endif
- /*
- * We must move the residual byte to memory.
- *
- * UA contains bit 0..31 of the address to
- * move the residual byte.
- * Move it to the table indirect.
- */
- SCR_STORE_REL (ua, 4),
- offsetof (struct ccb, phys.wresid.addr),
- /*
- * Increment UA (move address to next position).
- */
- SCR_REG_REG (ua, SCR_ADD, 1),
- 0,
- SCR_REG_REG (ua1, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (ua2, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (ua3, SCR_ADDC, 0),
- 0,
- /*
- * Compute SCRATCHA as:
- * - size to transfer = 1 byte.
- * - bit 24..31 = high address bit [32...39].
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDRH (zero),
- SCR_REG_REG (scratcha, SCR_OR, 1),
- 0,
- SCR_FROM_REG (rbc3),
- 0,
- SCR_TO_REG (scratcha3),
- 0,
- /*
- * Move this value to the table indirect.
- */
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct ccb, phys.wresid.size),
- /*
- * Wait for a valid phase.
- * While testing with bogus QUANTUM drives, the C1010
- * sometimes raised a spurious phase mismatch with
- * WSR and the CHMOV(1) triggered another PM.
- * Waiting explicitely for the PHASE seemed to avoid
- * the nested phase mismatch. Btw, this didn't happen
- * using my IBM drives.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_IN)),
- 0,
- /*
- * Perform the move of the residual byte.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct ccb, phys.wresid),
- /*
- * We can now handle the phase mismatch with UA fixed.
- * RBC[0..23]=0 is a special case that does not require
- * a PM context. The C code also checks against this.
- */
- SCR_FROM_REG (rbc),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- SCR_FROM_REG (rbc1),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- SCR_FROM_REG (rbc2),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- /*
- * RBC[0..23]=0.
- * Not only we donnot need a PM context, but this would
- * lead to a bogus CHMOV(0). This condition means that
- * the residual was the last byte to move from this CHMOV.
- * So, we just have to move the current data script pointer
- * (i.e. TEMP) to the SCRIPTS address following the
- * interrupted CHMOV and jump to dispatcher.
- */
- SCR_STORE_ABS (ia, 4),
- PADDRH (scratch),
- SCR_LOAD_ABS (temp, 4),
- PADDRH (scratch),
- SCR_JUMP,
- PADDR (dispatch),
-}/*--------------------------< WSR_MA_HELPER >-----------------------*/,{
- /*
- * Helper for the C code when WSR bit is set.
- * Perform the move of the residual byte.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct ccb, phys.wresid),
- SCR_JUMP,
- PADDR (dispatch),
-}/*-------------------------< ZERO >------------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< SCRATCH >---------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< SCRATCH1 >--------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< PM0_DATA_ADDR >---------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< PM1_DATA_ADDR >---------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< SAVED_DSA >-------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< SAVED_DRS >-------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< DONE_POS >--------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< STARTPOS >--------------------*/,{
- SCR_DATA_ZERO,
-}/*-------------------------< TARGTBL >---------------------*/,{
- SCR_DATA_ZERO,
-
-
-/*
-** We may use MEMORY MOVE instructions to load the on chip-RAM,
-** if it happens that mapping PCI memory is not possible.
-** But writing the RAM from the CPU is the preferred method,
-** since PCI 2.2 seems to disallow PCI self-mastering.
-*/
-
-#ifdef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
-
-}/*-------------------------< START_RAM >-------------------*/,{
- /*
- ** Load the script into on-chip RAM,
- ** and jump to start point.
- */
- SCR_COPY (sizeof (struct script)),
-}/*-------------------------< SCRIPT0_BA >--------------------*/,{
- 0,
- PADDR (start),
- SCR_JUMP,
- PADDR (init),
-
-}/*-------------------------< START_RAM64 >--------------------*/,{
- /*
- ** Load the RAM and start for 64 bit PCI (895A,896).
- ** Both scripts (script and scripth) are loaded into
- ** the RAM which is 8K (4K for 825A/875/895).
- ** We also need to load some 32-63 bit segments
- ** address of the SCRIPTS processor.
- ** LOAD/STORE ABSOLUTE always refers to on-chip RAM
- ** in our implementation. The main memory is
- ** accessed using LOAD/STORE DSA RELATIVE.
- */
- SCR_LOAD_REL (mmws, 4),
- offsetof (struct ncb, scr_ram_seg),
- SCR_COPY (sizeof(struct script)),
-}/*-------------------------< SCRIPT0_BA64 >--------------------*/,{
- 0,
- PADDR (start),
- SCR_COPY (sizeof(struct scripth)),
-}/*-------------------------< SCRIPTH0_BA64 >--------------------*/,{
- 0,
- PADDRH (start64),
- SCR_LOAD_REL (mmrs, 4),
- offsetof (struct ncb, scr_ram_seg),
- SCR_JUMP64,
- PADDRH (start64),
-}/*-------------------------< RAM_SEG64 >--------------------*/,{
- 0,
-
-#endif /* SCSI_NCR_PCI_MEM_NOT_SUPPORTED */
-
-}/*-------------------------< SNOOPTEST >-------------------*/,{
- /*
- ** Read the variable.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof(struct ncb, ncr_cache),
- SCR_STORE_REL (temp, 4),
- offsetof(struct ncb, ncr_cache),
- SCR_LOAD_REL (temp, 4),
- offsetof(struct ncb, ncr_cache),
-}/*-------------------------< SNOOPEND >-------------------*/,{
- /*
- ** And stop.
- */
- SCR_INT,
- 99,
-}/*--------------------------------------------------------*/
-};
-
-/*==========================================================
-**
-**
-** Fill in #define dependent parts of the script
-**
-**
-**==========================================================
-*/
-
-void __init ncr_script_fill (struct script * scr, struct scripth * scrh)
-{
- int i;
- ncrcmd *p;
-
- p = scr->data_in;
- for (i=0; i<MAX_SCATTER; i++) {
- *p++ =SCR_CHMOV_TBL ^ SCR_DATA_IN;
- *p++ =offsetof (struct dsb, data[i]);
- };
-
- assert ((u_long)p == (u_long)&scr->data_in + sizeof (scr->data_in));
-
- p = scr->data_out;
-
- for (i=0; i<MAX_SCATTER; i++) {
- *p++ =SCR_CHMOV_TBL ^ SCR_DATA_OUT;
- *p++ =offsetof (struct dsb, data[i]);
- };
-
- assert ((u_long)p == (u_long)&scr->data_out + sizeof (scr->data_out));
-}
-
-/*==========================================================
-**
-**
-** Copy and rebind a script.
-**
-**
-**==========================================================
-*/
-
-static void __init
-ncr_script_copy_and_bind (ncb_p np,ncrcmd *src,ncrcmd *dst,int len)
-{
- ncrcmd opcode, new, old, tmp1, tmp2;
- ncrcmd *start, *end;
- int relocs;
- int opchanged = 0;
-
- start = src;
- end = src + len/4;
-
- while (src < end) {
-
- opcode = *src++;
- *dst++ = cpu_to_scr(opcode);
-
- /*
- ** If we forget to change the length
- ** in struct script, a field will be
- ** padded with 0. This is an illegal
- ** command.
- */
-
- if (opcode == 0) {
- printk (KERN_INFO "%s: ERROR0 IN SCRIPT at %d.\n",
- ncr_name(np), (int) (src-start-1));
- MDELAY (10000);
- continue;
- };
-
- /*
- ** We use the bogus value 0xf00ff00f ;-)
- ** to reserve data area in SCRIPTS.
- */
- if (opcode == SCR_DATA_ZERO) {
- dst[-1] = 0;
- continue;
- }
-
- if (DEBUG_FLAGS & DEBUG_SCRIPT)
- printk (KERN_INFO "%p: <%x>\n",
- (src-1), (unsigned)opcode);
-
- /*
- ** We don't have to decode ALL commands
- */
- switch (opcode >> 28) {
-
- case 0xf:
- /*
- ** LOAD / STORE DSA relative, don't relocate.
- */
- relocs = 0;
- break;
- case 0xe:
- /*
- ** LOAD / STORE absolute.
- */
- relocs = 1;
- break;
- case 0xc:
- /*
- ** COPY has TWO arguments.
- */
- relocs = 2;
- tmp1 = src[0];
- tmp2 = src[1];
-#ifdef RELOC_KVAR
- if ((tmp1 & RELOC_MASK) == RELOC_KVAR)
- tmp1 = 0;
- if ((tmp2 & RELOC_MASK) == RELOC_KVAR)
- tmp2 = 0;
-#endif
- if ((tmp1 ^ tmp2) & 3) {
- printk (KERN_ERR"%s: ERROR1 IN SCRIPT at %d.\n",
- ncr_name(np), (int) (src-start-1));
- MDELAY (1000);
- }
- /*
- ** If PREFETCH feature not enabled, remove
- ** the NO FLUSH bit if present.
- */
- if ((opcode & SCR_NO_FLUSH) &&
- !(np->features & FE_PFEN)) {
- dst[-1] = cpu_to_scr(opcode & ~SCR_NO_FLUSH);
- ++opchanged;
- }
- break;
-
- case 0x0:
- /*
- ** MOVE/CHMOV (absolute address)
- */
- if (!(np->features & FE_WIDE))
- dst[-1] = cpu_to_scr(opcode | OPC_MOVE);
- relocs = 1;
- break;
-
- case 0x1:
- /*
- ** MOVE/CHMOV (table indirect)
- */
- if (!(np->features & FE_WIDE))
- dst[-1] = cpu_to_scr(opcode | OPC_MOVE);
- relocs = 0;
- break;
-
- case 0x8:
- /*
- ** JUMP / CALL
- ** don't relocate if relative :-)
- */
- if (opcode & 0x00800000)
- relocs = 0;
- else if ((opcode & 0xf8400000) == 0x80400000)/*JUMP64*/
- relocs = 2;
- else
- relocs = 1;
- break;
-
- case 0x4:
- case 0x5:
- case 0x6:
- case 0x7:
- relocs = 1;
- break;
-
- default:
- relocs = 0;
- break;
- };
-
- if (!relocs) {
- *dst++ = cpu_to_scr(*src++);
- continue;
- }
- while (relocs--) {
- old = *src++;
-
- switch (old & RELOC_MASK) {
- case RELOC_REGISTER:
- new = (old & ~RELOC_MASK) + np->base_ba;
- break;
- case RELOC_LABEL:
- new = (old & ~RELOC_MASK) + np->p_script;
- break;
- case RELOC_LABELH:
- new = (old & ~RELOC_MASK) + np->p_scripth;
- break;
- case RELOC_SOFTC:
- new = (old & ~RELOC_MASK) + np->p_ncb;
- break;
-#ifdef RELOC_KVAR
- case RELOC_KVAR:
- new=0;
- if (((old & ~RELOC_MASK) < SCRIPT_KVAR_FIRST) ||
- ((old & ~RELOC_MASK) > SCRIPT_KVAR_LAST))
- panic("ncr KVAR out of range");
- new = vtobus(script_kvars[old & ~RELOC_MASK]);
-#endif
- break;
- case 0:
- /* Don't relocate a 0 address. */
- if (old == 0) {
- new = old;
- break;
- }
- /* fall through */
- default:
- new = 0; /* For 'cc' not to complain */
- panic("ncr_script_copy_and_bind: "
- "weird relocation %x\n", old);
- break;
- }
-
- *dst++ = cpu_to_scr(new);
- }
- };
-}
-
-/*==========================================================
-**
-**
-** Auto configuration: attach and init a host adapter.
-**
-**
-**==========================================================
-*/
-
-/*
-** Linux host data structure.
-*/
-
-struct host_data {
- struct ncb *ncb;
-};
-
-/*
-** Print something which allows to retrieve the controler type, unit,
-** target, lun concerned by a kernel message.
-*/
-
-static void PRINT_TARGET(ncb_p np, int target)
-{
- printk(KERN_INFO "%s-<%d,*>: ", ncr_name(np), target);
-}
-
-static void PRINT_LUN(ncb_p np, int target, int lun)
-{
- printk(KERN_INFO "%s-<%d,%d>: ", ncr_name(np), target, lun);
-}
-
-static void PRINT_ADDR(Scsi_Cmnd *cmd)
-{
- struct host_data *host_data = (struct host_data *) cmd->device->host->hostdata;
- PRINT_LUN(host_data->ncb, cmd->device->id, cmd->device->lun);
-}
-
-/*==========================================================
-**
-** NCR chip clock divisor table.
-** Divisors are multiplied by 10,000,000 in order to make
-** calculations more simple.
-**
-**==========================================================
-*/
-
-#define _5M 5000000
-static u_long div_10M[] =
- {2*_5M, 3*_5M, 4*_5M, 6*_5M, 8*_5M, 12*_5M, 16*_5M};
-
-
-/*===============================================================
-**
-** Prepare io register values used by ncr_init() according
-** to selected and supported features.
-**
-** NCR/SYMBIOS chips allow burst lengths of 2, 4, 8, 16, 32, 64,
-** 128 transfers. All chips support at least 16 transfers bursts.
-** The 825A, 875 and 895 chips support bursts of up to 128
-** transfers and the 895A and 896 support bursts of up to 64
-** transfers. All other chips support up to 16 transfers bursts.
-**
-** For PCI 32 bit data transfers each transfer is a DWORD (4 bytes).
-** It is a QUADWORD (8 bytes) for PCI 64 bit data transfers.
-** Only the 896 is able to perform 64 bit data transfers.
-**
-** We use log base 2 (burst length) as internal code, with
-** value 0 meaning "burst disabled".
-**
-**===============================================================
-*/
-
-/*
- * Burst length from burst code.
- */
-#define burst_length(bc) (!(bc))? 0 : 1 << (bc)
-
-/*
- * Burst code from io register bits.
- */
-#define burst_code(dmode, ctest4, ctest5) \
- (ctest4) & 0x80? 0 : (((dmode) & 0xc0) >> 6) + ((ctest5) & 0x04) + 1
-
-/*
- * Set initial io register bits from burst code.
- */
-static inline void ncr_init_burst(ncb_p np, u_char bc)
-{
- np->rv_ctest4 &= ~0x80;
- np->rv_dmode &= ~(0x3 << 6);
- np->rv_ctest5 &= ~0x4;
-
- if (!bc) {
- np->rv_ctest4 |= 0x80;
- }
- else {
- --bc;
- np->rv_dmode |= ((bc & 0x3) << 6);
- np->rv_ctest5 |= (bc & 0x4);
- }
-}
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
-
-/*
-** Get target set-up from Symbios format NVRAM.
-*/
-
-static void __init
-ncr_Symbios_setup_target(ncb_p np, int target, Symbios_nvram *nvram)
-{
- tcb_p tp = &np->target[target];
- Symbios_target *tn = &nvram->target[target];
-
- tp->usrsync = tn->sync_period ? (tn->sync_period + 3) / 4 : 255;
- tp->usrwide = tn->bus_width == 0x10 ? 1 : 0;
- tp->usrtags =
- (tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED)? MAX_TAGS : 0;
-
- if (!(tn->flags & SYMBIOS_DISCONNECT_ENABLE))
- tp->usrflag |= UF_NODISC;
- if (!(tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME))
- tp->usrflag |= UF_NOSCAN;
-}
-
-/*
-** Get target set-up from Tekram format NVRAM.
-*/
-
-static void __init
-ncr_Tekram_setup_target(ncb_p np, int target, Tekram_nvram *nvram)
-{
- tcb_p tp = &np->target[target];
- struct Tekram_target *tn = &nvram->target[target];
- int i;
-
- if (tn->flags & TEKRAM_SYNC_NEGO) {
- i = tn->sync_index & 0xf;
- tp->usrsync = Tekram_sync[i];
- }
-
- tp->usrwide = (tn->flags & TEKRAM_WIDE_NEGO) ? 1 : 0;
-
- if (tn->flags & TEKRAM_TAGGED_COMMANDS) {
- tp->usrtags = 2 << nvram->max_tags_index;
- }
-
- if (!(tn->flags & TEKRAM_DISCONNECT_ENABLE))
- tp->usrflag = UF_NODISC;
-
- /* If any device does not support parity, we will not use this option */
- if (!(tn->flags & TEKRAM_PARITY_CHECK))
- np->rv_scntl0 &= ~0x0a; /* SCSI parity checking disabled */
-}
-#endif /* SCSI_NCR_NVRAM_SUPPORT */
-
-/*
-** Save initial settings of some IO registers.
-** Assumed to have been set by BIOS.
-*/
-static void __init ncr_save_initial_setting(ncb_p np)
-{
- np->sv_scntl0 = INB(nc_scntl0) & 0x0a;
- np->sv_dmode = INB(nc_dmode) & 0xce;
- np->sv_dcntl = INB(nc_dcntl) & 0xa8;
- np->sv_ctest3 = INB(nc_ctest3) & 0x01;
- np->sv_ctest4 = INB(nc_ctest4) & 0x80;
- np->sv_gpcntl = INB(nc_gpcntl);
- np->sv_stest2 = INB(nc_stest2) & 0x20;
- np->sv_stest4 = INB(nc_stest4);
- np->sv_stest1 = INB(nc_stest1);
-
- np->sv_scntl3 = INB(nc_scntl3) & 0x07;
-
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66) ){
- /*
- ** C1010 always uses large fifo, bit 5 rsvd
- ** scntl4 used ONLY with C1010
- */
- np->sv_ctest5 = INB(nc_ctest5) & 0x04 ;
- np->sv_scntl4 = INB(nc_scntl4);
- }
- else {
- np->sv_ctest5 = INB(nc_ctest5) & 0x24 ;
- np->sv_scntl4 = 0;
- }
-}
-
-/*
-** Prepare io register values used by ncr_init()
-** according to selected and supported features.
-*/
-static int __init ncr_prepare_setting(ncb_p np, ncr_nvram *nvram)
-{
- u_char burst_max;
- u_long period;
- int i;
-
-#ifdef CONFIG_PARISC
- char scsi_mode = -1;
- struct hardware_path hwpath;
-#endif
-
- /*
- ** Wide ?
- */
-
- np->maxwide = (np->features & FE_WIDE)? 1 : 0;
-
- /*
- * Guess the frequency of the chip's clock.
- */
- if (np->features & (FE_ULTRA3 | FE_ULTRA2))
- np->clock_khz = 160000;
- else if (np->features & FE_ULTRA)
- np->clock_khz = 80000;
- else
- np->clock_khz = 40000;
-
- /*
- * Get the clock multiplier factor.
- */
- if (np->features & FE_QUAD)
- np->multiplier = 4;
- else if (np->features & FE_DBLR)
- np->multiplier = 2;
- else
- np->multiplier = 1;
-
- /*
- * Measure SCSI clock frequency for chips
- * it may vary from assumed one.
- */
- if (np->features & FE_VARCLK)
- ncr_getclock(np, np->multiplier);
-
- /*
- * Divisor to be used for async (timer pre-scaler).
- *
- * Note: For C1010 the async divisor is 2(8) if he
- * quadrupler is disabled (enabled).
- */
-
- if ( (np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
-
- np->rv_scntl3 = 0;
- }
- else
- {
- i = np->clock_divn - 1;
- while (--i >= 0) {
- if (10ul * SCSI_NCR_MIN_ASYNC * np->clock_khz
- > div_10M[i]) {
- ++i;
- break;
- }
- }
- np->rv_scntl3 = i+1;
- }
-
-
- /*
- * Save the ultra3 register for the C1010/C1010_66
- */
-
- np->rv_scntl4 = np->sv_scntl4;
-
- /*
- * Minimum synchronous period factor supported by the chip.
- * Btw, 'period' is in tenths of nanoseconds.
- */
-
- period = (4 * div_10M[0] + np->clock_khz - 1) / np->clock_khz;
-
-#ifdef CONFIG_PARISC
- /* Host firmware (PDC) keeps a table for crippling SCSI capabilities.
- * Many newer machines export one channel of 53c896 chip
- * as SE, 50-pin HD. Also used for Multi-initiator SCSI clusters
- * to set the SCSI Initiator ID.
- */
- get_pci_node_path(np->pdev, &hwpath);
- if (pdc_get_initiator(&hwpath, &np->myaddr, &period, &np->maxwide, &scsi_mode))
- {
- if (np->maxwide)
- np->features |= FE_WIDE;
- if (scsi_mode >= 0) {
- /* C3000 PDC reports period/mode */
- driver_setup.diff_support = 0;
- switch(scsi_mode) {
- case 0: np->scsi_mode = SMODE_SE; break;
- case 1: np->scsi_mode = SMODE_HVD; break;
- case 2: np->scsi_mode = SMODE_LVD; break;
- default: break;
- }
- }
- }
-#endif
-
- if (period <= 250) np->minsync = 10;
- else if (period <= 303) np->minsync = 11;
- else if (period <= 500) np->minsync = 12;
- else np->minsync = (period + 40 - 1) / 40;
-
- /*
- * Fix up. If sync. factor is 10 (160000Khz clock) and chip
- * supports ultra3, then min. sync. period 12.5ns and the factor is 9
- * Also keep track of the maximum offset in ST mode which may differ
- * from the maximum offset in DT mode. For now hardcoded to 31.
- */
-
- if (np->features & FE_ULTRA3) {
- if (np->minsync == 10)
- np->minsync = 9;
- np->maxoffs_st = 31;
- }
- else
- np->maxoffs_st = np->maxoffs;
-
- /*
- * Check against chip SCSI standard support (SCSI-2,ULTRA,ULTRA2).
- *
- * Transfer period minimums: SCSI-1 200 (50); Fast 100 (25)
- * Ultra 50 (12); Ultra2 (6); Ultra3 (3)
- */
-
- if (np->minsync < 25 && !(np->features & (FE_ULTRA|FE_ULTRA2|FE_ULTRA3)))
- np->minsync = 25;
- else if (np->minsync < 12 && (np->features & FE_ULTRA))
- np->minsync = 12;
- else if (np->minsync < 10 && (np->features & FE_ULTRA2))
- np->minsync = 10;
- else if (np->minsync < 9 && (np->features & FE_ULTRA3))
- np->minsync = 9;
-
- /*
- * Maximum synchronous period factor supported by the chip.
- */
-
- period = (11 * div_10M[np->clock_divn - 1]) / (4 * np->clock_khz);
- np->maxsync = period > 2540 ? 254 : period / 10;
-
- /*
- ** 64 bit (53C895A or 53C896) ?
- */
- if (np->features & FE_DAC) {
- if (np->features & FE_DAC_IN_USE)
- np->rv_ccntl1 |= (XTIMOD | EXTIBMV);
- else
- np->rv_ccntl1 |= (DDAC);
- }
-
- /*
- ** Phase mismatch handled by SCRIPTS (53C895A, 53C896 or C1010) ?
- */
- if (np->features & FE_NOPM)
- np->rv_ccntl0 |= (ENPMJ);
-
- /*
- ** Prepare initial value of other IO registers
- */
-#if defined SCSI_NCR_TRUST_BIOS_SETTING
- np->rv_scntl0 = np->sv_scntl0;
- np->rv_dmode = np->sv_dmode;
- np->rv_dcntl = np->sv_dcntl;
- np->rv_ctest3 = np->sv_ctest3;
- np->rv_ctest4 = np->sv_ctest4;
- np->rv_ctest5 = np->sv_ctest5;
- burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
-#else
-
- /*
- ** Select burst length (dwords)
- */
- burst_max = driver_setup.burst_max;
- if (burst_max == 255)
- burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
- if (burst_max > 7)
- burst_max = 7;
- if (burst_max > np->maxburst)
- burst_max = np->maxburst;
-
- /*
- ** DEL 352 - 53C810 Rev x11 - Part Number 609-0392140 - ITEM 2.
- ** This chip and the 860 Rev 1 may wrongly use PCI cache line
- ** based transactions on LOAD/STORE instructions. So we have
- ** to prevent these chips from using such PCI transactions in
- ** this driver. The generic sym53c8xx driver that does not use
- ** LOAD/STORE instructions does not need this work-around.
- */
- if ((np->device_id == PCI_DEVICE_ID_NCR_53C810 &&
- np->revision_id >= 0x10 && np->revision_id <= 0x11) ||
- (np->device_id == PCI_DEVICE_ID_NCR_53C860 &&
- np->revision_id <= 0x1))
- np->features &= ~(FE_WRIE|FE_ERL|FE_ERMP);
-
- /*
- ** DEL ? - 53C1010 Rev 1 - Part Number 609-0393638
- ** 64-bit Slave Cycles must be disabled.
- */
- if ( ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) && (np->revision_id < 0x02) )
- || (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66 ) )
- np->rv_ccntl1 |= 0x10;
-
- /*
- ** Select all supported special features.
- ** If we are using on-board RAM for scripts, prefetch (PFEN)
- ** does not help, but burst op fetch (BOF) does.
- ** Disabling PFEN makes sure BOF will be used.
- */
- if (np->features & FE_ERL)
- np->rv_dmode |= ERL; /* Enable Read Line */
- if (np->features & FE_BOF)
- np->rv_dmode |= BOF; /* Burst Opcode Fetch */
- if (np->features & FE_ERMP)
- np->rv_dmode |= ERMP; /* Enable Read Multiple */
-#if 1
- if ((np->features & FE_PFEN) && !np->base2_ba)
-#else
- if (np->features & FE_PFEN)
-#endif
- np->rv_dcntl |= PFEN; /* Prefetch Enable */
- if (np->features & FE_CLSE)
- np->rv_dcntl |= CLSE; /* Cache Line Size Enable */
- if (np->features & FE_WRIE)
- np->rv_ctest3 |= WRIE; /* Write and Invalidate */
-
-
- if ( (np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66) &&
- (np->features & FE_DFS))
- np->rv_ctest5 |= DFS; /* Dma Fifo Size */
- /* C1010/C1010_66 always large fifo */
-
- /*
- ** Select some other
- */
- if (driver_setup.master_parity)
- np->rv_ctest4 |= MPEE; /* Master parity checking */
- if (driver_setup.scsi_parity)
- np->rv_scntl0 |= 0x0a; /* full arb., ena parity, par->ATN */
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- /*
- ** Get parity checking, host ID and verbose mode from NVRAM
- **/
- if (nvram) {
- switch(nvram->type) {
- case SCSI_NCR_TEKRAM_NVRAM:
- np->myaddr = nvram->data.Tekram.host_id & 0x0f;
- break;
- case SCSI_NCR_SYMBIOS_NVRAM:
- if (!(nvram->data.Symbios.flags & SYMBIOS_PARITY_ENABLE))
- np->rv_scntl0 &= ~0x0a;
- np->myaddr = nvram->data.Symbios.host_id & 0x0f;
- if (nvram->data.Symbios.flags & SYMBIOS_VERBOSE_MSGS)
- np->verbose += 1;
- break;
- }
- }
-#endif
- /*
- ** Get SCSI addr of host adapter (set by bios?).
- */
- if (np->myaddr == 255) {
- np->myaddr = INB(nc_scid) & 0x07;
- if (!np->myaddr)
- np->myaddr = SCSI_NCR_MYADDR;
- }
-
-#endif /* SCSI_NCR_TRUST_BIOS_SETTING */
-
- /*
- * Prepare initial io register bits for burst length
- */
- ncr_init_burst(np, burst_max);
-
- /*
- ** Set SCSI BUS mode.
- **
- ** - ULTRA2 chips (895/895A/896)
- ** and ULTRA 3 chips (1010) report the current
- ** BUS mode through the STEST4 IO register.
- ** - For previous generation chips (825/825A/875),
- ** user has to tell us how to check against HVD,
- ** since a 100% safe algorithm is not possible.
- */
- np->scsi_mode = SMODE_SE;
- if (np->features & (FE_ULTRA2 | FE_ULTRA3))
- np->scsi_mode = (np->sv_stest4 & SMODE);
- else if (np->features & FE_DIFF) {
- switch(driver_setup.diff_support) {
- case 4: /* Trust previous settings if present, then GPIO3 */
- if (np->sv_scntl3) {
- if (np->sv_stest2 & 0x20)
- np->scsi_mode = SMODE_HVD;
- break;
- }
- case 3: /* SYMBIOS controllers report HVD through GPIO3 */
- if (nvram && nvram->type != SCSI_NCR_SYMBIOS_NVRAM)
- break;
- if (INB(nc_gpreg) & 0x08)
- break;
- case 2: /* Set HVD unconditionally */
- np->scsi_mode = SMODE_HVD;
- case 1: /* Trust previous settings for HVD */
- if (np->sv_stest2 & 0x20)
- np->scsi_mode = SMODE_HVD;
- break;
- default:/* Don't care about HVD */
- break;
- }
- }
- if (np->scsi_mode == SMODE_HVD)
- np->rv_stest2 |= 0x20;
-
- /*
- ** Set LED support from SCRIPTS.
- ** Ignore this feature for boards known to use a
- ** specific GPIO wiring and for the 895A or 896
- ** that drive the LED directly.
- ** Also probe initial setting of GPIO0 as output.
- */
- if ((driver_setup.led_pin ||
- (nvram && nvram->type == SCSI_NCR_SYMBIOS_NVRAM)) &&
- !(np->features & FE_LEDC) && !(np->sv_gpcntl & 0x01))
- np->features |= FE_LED0;
-
- /*
- ** Set irq mode.
- */
- switch(driver_setup.irqm & 3) {
- case 2:
- np->rv_dcntl |= IRQM;
- break;
- case 1:
- np->rv_dcntl |= (np->sv_dcntl & IRQM);
- break;
- default:
- break;
- }
-
- /*
- ** Configure targets according to driver setup.
- ** If NVRAM present get targets setup from NVRAM.
- ** Allow to override sync, wide and NOSCAN from
- ** boot command line.
- */
- for (i = 0 ; i < MAX_TARGET ; i++) {
- tcb_p tp = &np->target[i];
-
- tp->usrsync = 255;
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (nvram) {
- switch(nvram->type) {
- case SCSI_NCR_TEKRAM_NVRAM:
- ncr_Tekram_setup_target(np, i, &nvram->data.Tekram);
- break;
- case SCSI_NCR_SYMBIOS_NVRAM:
- ncr_Symbios_setup_target(np, i, &nvram->data.Symbios);
- break;
- }
- if (driver_setup.use_nvram & 0x2)
- tp->usrsync = driver_setup.default_sync;
- if (driver_setup.use_nvram & 0x4)
- tp->usrwide = driver_setup.max_wide;
- if (driver_setup.use_nvram & 0x8)
- tp->usrflag &= ~UF_NOSCAN;
- }
- else {
-#else
- if (1) {
-#endif
- tp->usrsync = driver_setup.default_sync;
- tp->usrwide = driver_setup.max_wide;
- tp->usrtags = MAX_TAGS;
- if (!driver_setup.disconnection)
- np->target[i].usrflag = UF_NODISC;
- }
- }
-
- /*
- ** Announce all that stuff to user.
- */
-
- i = nvram ? nvram->type : 0;
- printk(KERN_INFO "%s: %sID %d, Fast-%d%s%s\n", ncr_name(np),
- i == SCSI_NCR_SYMBIOS_NVRAM ? "Symbios format NVRAM, " :
- (i == SCSI_NCR_TEKRAM_NVRAM ? "Tekram format NVRAM, " : ""),
- np->myaddr,
- np->minsync < 10 ? 80 :
- (np->minsync < 12 ? 40 : (np->minsync < 25 ? 20 : 10) ),
- (np->rv_scntl0 & 0xa) ? ", Parity Checking" : ", NO Parity",
- (np->rv_stest2 & 0x20) ? ", Differential" : "");
-
- if (bootverbose > 1) {
- printk (KERN_INFO "%s: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = "
- "(hex) %02x/%02x/%02x/%02x/%02x/%02x\n",
- ncr_name(np), np->sv_scntl3, np->sv_dmode, np->sv_dcntl,
- np->sv_ctest3, np->sv_ctest4, np->sv_ctest5);
-
- printk (KERN_INFO "%s: final SCNTL3/DMODE/DCNTL/CTEST3/4/5 = "
- "(hex) %02x/%02x/%02x/%02x/%02x/%02x\n",
- ncr_name(np), np->rv_scntl3, np->rv_dmode, np->rv_dcntl,
- np->rv_ctest3, np->rv_ctest4, np->rv_ctest5);
- }
-
- if (bootverbose && np->base2_ba)
- printk (KERN_INFO "%s: on-chip RAM at 0x%lx\n",
- ncr_name(np), np->base2_ba);
-
- return 0;
-}
-
-
-#ifdef SCSI_NCR_DEBUG_NVRAM
-
-void __init ncr_display_Symbios_nvram(ncb_p np, Symbios_nvram *nvram)
-{
- int i;
-
- /* display Symbios nvram host data */
- printk(KERN_DEBUG "%s: HOST ID=%d%s%s%s%s%s\n",
- ncr_name(np), nvram->host_id & 0x0f,
- (nvram->flags & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
- (nvram->flags & SYMBIOS_PARITY_ENABLE) ? " PARITY" :"",
- (nvram->flags & SYMBIOS_VERBOSE_MSGS) ? " VERBOSE" :"",
- (nvram->flags & SYMBIOS_CHS_MAPPING) ? " CHS_ALT" :"",
- (nvram->flags1 & SYMBIOS_SCAN_HI_LO) ? " HI_LO" :"");
-
- /* display Symbios nvram drive data */
- for (i = 0 ; i < 15 ; i++) {
- struct Symbios_target *tn = &nvram->target[i];
- printk(KERN_DEBUG "%s-%d:%s%s%s%s WIDTH=%d SYNC=%d TMO=%d\n",
- ncr_name(np), i,
- (tn->flags & SYMBIOS_DISCONNECT_ENABLE) ? " DISC" : "",
- (tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME) ? " SCAN_BOOT" : "",
- (tn->flags & SYMBIOS_SCAN_LUNS) ? " SCAN_LUNS" : "",
- (tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED)? " TCQ" : "",
- tn->bus_width,
- tn->sync_period / 4,
- tn->timeout);
- }
-}
-
-static u_char Tekram_boot_delay[7] __initdata = {3, 5, 10, 20, 30, 60, 120};
-
-void __init ncr_display_Tekram_nvram(ncb_p np, Tekram_nvram *nvram)
-{
- int i, tags, boot_delay;
- char *rem;
-
- /* display Tekram nvram host data */
- tags = 2 << nvram->max_tags_index;
- boot_delay = 0;
- if (nvram->boot_delay_index < 6)
- boot_delay = Tekram_boot_delay[nvram->boot_delay_index];
- switch((nvram->flags & TEKRAM_REMOVABLE_FLAGS) >> 6) {
- default:
- case 0: rem = ""; break;
- case 1: rem = " REMOVABLE=boot device"; break;
- case 2: rem = " REMOVABLE=all"; break;
- }
-
- printk(KERN_DEBUG
- "%s: HOST ID=%d%s%s%s%s%s%s%s%s%s BOOT DELAY=%d tags=%d\n",
- ncr_name(np), nvram->host_id & 0x0f,
- (nvram->flags1 & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
- (nvram->flags & TEKRAM_MORE_THAN_2_DRIVES) ? " >2DRIVES" :"",
- (nvram->flags & TEKRAM_DRIVES_SUP_1GB) ? " >1GB" :"",
- (nvram->flags & TEKRAM_RESET_ON_POWER_ON) ? " RESET" :"",
- (nvram->flags & TEKRAM_ACTIVE_NEGATION) ? " ACT_NEG" :"",
- (nvram->flags & TEKRAM_IMMEDIATE_SEEK) ? " IMM_SEEK" :"",
- (nvram->flags & TEKRAM_SCAN_LUNS) ? " SCAN_LUNS" :"",
- (nvram->flags1 & TEKRAM_F2_F6_ENABLED) ? " F2_F6" :"",
- rem, boot_delay, tags);
-
- /* display Tekram nvram drive data */
- for (i = 0; i <= 15; i++) {
- int sync, j;
- struct Tekram_target *tn = &nvram->target[i];
- j = tn->sync_index & 0xf;
- sync = Tekram_sync[j];
- printk(KERN_DEBUG "%s-%d:%s%s%s%s%s%s PERIOD=%d\n",
- ncr_name(np), i,
- (tn->flags & TEKRAM_PARITY_CHECK) ? " PARITY" : "",
- (tn->flags & TEKRAM_SYNC_NEGO) ? " SYNC" : "",
- (tn->flags & TEKRAM_DISCONNECT_ENABLE) ? " DISC" : "",
- (tn->flags & TEKRAM_START_CMD) ? " START" : "",
- (tn->flags & TEKRAM_TAGGED_COMMANDS) ? " TCQ" : "",
- (tn->flags & TEKRAM_WIDE_NEGO) ? " WIDE" : "",
- sync);
- }
-}
-#endif /* SCSI_NCR_DEBUG_NVRAM */
-
-/*
-** Host attach and initialisations.
-**
-** Allocate host data and ncb structure.
-** Request IO region and remap MMIO region.
-** Do chip initialization.
-** If all is OK, install interrupt handling and
-** start the timer daemon.
-*/
-
-static int __init
-ncr_attach (Scsi_Host_Template *tpnt, int unit, ncr_device *device)
-{
- struct host_data *host_data;
- ncb_p np = 0;
- struct Scsi_Host *instance = 0;
- u_long flags = 0;
- ncr_nvram *nvram = device->nvram;
- int i;
-
- printk(KERN_INFO NAME53C "%s-%d: rev 0x%x on pci bus %d device %d function %d "
-#ifdef __sparc__
- "irq %s\n",
-#else
- "irq %d\n",
-#endif
- device->chip.name, unit, device->chip.revision_id,
- device->slot.bus, (device->slot.device_fn & 0xf8) >> 3,
- device->slot.device_fn & 7,
-#ifdef __sparc__
- __irq_itoa(device->slot.irq));
-#else
- device->slot.irq);
-#endif
-
- /*
- ** Allocate host_data structure
- */
- if (!(instance = scsi_register(tpnt, sizeof(*host_data))))
- goto attach_error;
- host_data = (struct host_data *) instance->hostdata;
-
- /*
- ** Allocate the host control block.
- */
- np = __m_calloc_dma(device->pdev, sizeof(struct ncb), "NCB");
- if (!np)
- goto attach_error;
- NCR_INIT_LOCK_NCB(np);
- np->pdev = device->pdev;
- np->p_ncb = vtobus(np);
- host_data->ncb = np;
-
- /*
- ** Store input informations in the host data structure.
- */
- strlcpy(np->chip_name, device->chip.name, sizeof(np->chip_name));
- np->unit = unit;
- np->verbose = driver_setup.verbose;
- sprintf(np->inst_name, NAME53C "%s-%d", np->chip_name, np->unit);
- np->device_id = device->chip.device_id;
- np->revision_id = device->chip.revision_id;
- np->bus = device->slot.bus;
- np->device_fn = device->slot.device_fn;
- np->features = device->chip.features;
- np->clock_divn = device->chip.nr_divisor;
- np->maxoffs = device->chip.offset_max;
- np->maxburst = device->chip.burst_max;
- np->myaddr = device->host_id;
-
- /*
- ** Allocate the start queue.
- */
- np->squeue = (ncrcmd *)
- m_calloc_dma(sizeof(ncrcmd)*(MAX_START*2), "SQUEUE");
- if (!np->squeue)
- goto attach_error;
- np->p_squeue = vtobus(np->squeue);
-
- /*
- ** Allocate the done queue.
- */
- np->dqueue = (ncrcmd *)
- m_calloc_dma(sizeof(ncrcmd)*(MAX_START*2), "DQUEUE");
- if (!np->dqueue)
- goto attach_error;
-
- /*
- ** Allocate the target bus address array.
- */
- np->targtbl = (u_int32 *) m_calloc_dma(256, "TARGTBL");
- if (!np->targtbl)
- goto attach_error;
-
- /*
- ** Allocate SCRIPTS areas
- */
- np->script0 = (struct script *)
- m_calloc_dma(sizeof(struct script), "SCRIPT");
- if (!np->script0)
- goto attach_error;
- np->scripth0 = (struct scripth *)
- m_calloc_dma(sizeof(struct scripth), "SCRIPTH");
- if (!np->scripth0)
- goto attach_error;
-
- /*
- ** Initialyze the CCB free queue and,
- ** allocate some CCB. We need at least ONE.
- */
- xpt_que_init(&np->free_ccbq);
- xpt_que_init(&np->b0_ccbq);
- if (!ncr_alloc_ccb(np))
- goto attach_error;
-
- /*
- ** Initialize timer structure
- **
- */
- init_timer(&np->timer);
- np->timer.data = (unsigned long) np;
- np->timer.function = sym53c8xx_timeout;
-
- /*
- ** Try to map the controller chip to
- ** virtual and physical memory.
- */
-
- np->base_ba = device->slot.base;
- np->base_ws = (np->features & FE_IO256)? 256 : 128;
- np->base2_ba = (np->features & FE_RAM)? device->slot.base_2 : 0;
-
-#ifndef SCSI_NCR_IOMAPPED
- np->base_va = remap_pci_mem(device->slot.base_c, np->base_ws);
- if (!np->base_va) {
- printk(KERN_ERR "%s: can't map PCI MMIO region\n",ncr_name(np));
- goto attach_error;
- }
- else if (bootverbose > 1)
- printk(KERN_INFO "%s: using memory mapped IO\n", ncr_name(np));
-
- /*
- ** Make the controller's registers available.
- ** Now the INB INW INL OUTB OUTW OUTL macros
- ** can be used safely.
- */
-
- np->reg = (struct ncr_reg *) np->base_va;
-
-#endif /* !defined SCSI_NCR_IOMAPPED */
-
- /*
- ** If on-chip RAM is used, make sure SCRIPTS isn't too large.
- */
- if (np->base2_ba && sizeof(struct script) > 4096) {
- printk(KERN_ERR "%s: script too large.\n", ncr_name(np));
- goto attach_error;
- }
-
- /*
- ** Try to map the controller chip into iospace.
- */
-
- if (device->slot.io_port) {
- request_region(device->slot.io_port, np->base_ws, NAME53C8XX);
- np->base_io = device->slot.io_port;
- }
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (nvram) {
- switch(nvram->type) {
- case SCSI_NCR_SYMBIOS_NVRAM:
-#ifdef SCSI_NCR_DEBUG_NVRAM
- ncr_display_Symbios_nvram(np, &nvram->data.Symbios);
-#endif
- break;
- case SCSI_NCR_TEKRAM_NVRAM:
-#ifdef SCSI_NCR_DEBUG_NVRAM
- ncr_display_Tekram_nvram(np, &nvram->data.Tekram);
-#endif
- break;
- default:
- nvram = 0;
-#ifdef SCSI_NCR_DEBUG_NVRAM
- printk(KERN_DEBUG "%s: NVRAM: None or invalid data.\n", ncr_name(np));
-#endif
- }
- }
-#endif
-
- /*
- ** Save setting of some IO registers, so we will
- ** be able to probe specific implementations.
- */
- ncr_save_initial_setting (np);
-
- /*
- ** Reset the chip now, since it has been reported
- ** that SCSI clock calibration may not work properly
- ** if the chip is currently active.
- */
- ncr_chip_reset (np);
-
- /*
- ** Do chip dependent initialization.
- */
- (void) ncr_prepare_setting(np, nvram);
-
- /*
- ** Check the PCI clock frequency if needed.
- **
- ** Must be done after ncr_prepare_setting since it destroys
- ** STEST1 that is used to probe for the clock multiplier.
- **
- ** The range is currently [22688 - 45375 Khz], given
- ** the values used by ncr_getclock().
- ** This calibration of the frequecy measurement
- ** algorithm against the PCI clock frequency is only
- ** performed if the driver has had to measure the SCSI
- ** clock due to other heuristics not having been enough
- ** to deduce the SCSI clock frequency.
- **
- ** When the chip has been initialized correctly by the
- ** SCSI BIOS, the driver deduces the presence of the
- ** clock multiplier and the value of the SCSI clock from
- ** initial values of IO registers, and therefore no
- ** clock measurement is performed.
- ** Normally the driver should never have to measure any
- ** clock, unless the controller may use a 80 MHz clock
- ** or has a clock multiplier and any of the following
- ** condition is met:
- **
- ** - No SCSI BIOS is present.
- ** - SCSI BIOS did'nt enable the multiplier for some reason.
- ** - User has disabled the controller from the SCSI BIOS.
- ** - User booted the O/S from another O/S that did'nt enable
- ** the multiplier for some reason.
- **
- ** As a result, the driver may only have to measure some
- ** frequency in very unusual situations.
- **
- ** For this reality test against the PCI clock to really
- ** protect against flaws in the udelay() calibration or
- ** driver problem that affect the clock measurement
- ** algorithm, the actual PCI clock frequency must be 33 MHz.
- */
- i = np->pciclock_max ? ncr_getpciclock(np) : 0;
- if (i && (i < np->pciclock_min || i > np->pciclock_max)) {
- printk(KERN_ERR "%s: PCI clock (%u KHz) is out of range "
- "[%u KHz - %u KHz].\n",
- ncr_name(np), i, np->pciclock_min, np->pciclock_max);
- goto attach_error;
- }
-
- /*
- ** Patch script to physical addresses
- */
- ncr_script_fill (&script0, &scripth0);
-
- np->p_script = vtobus(np->script0);
- np->p_scripth = vtobus(np->scripth0);
- np->p_scripth0 = np->p_scripth;
-
- if (np->base2_ba) {
- np->p_script = np->base2_ba;
- if (np->features & FE_RAM8K) {
- np->base2_ws = 8192;
- np->p_scripth = np->p_script + 4096;
-#if BITS_PER_LONG > 32
- np->scr_ram_seg = cpu_to_scr(np->base2_ba >> 32);
-#endif
- }
- else
- np->base2_ws = 4096;
-#ifndef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- np->base2_va =
- remap_pci_mem(device->slot.base_2_c, np->base2_ws);
- if (!np->base2_va) {
- printk(KERN_ERR "%s: can't map PCI MEMORY region\n",
- ncr_name(np));
- goto attach_error;
- }
-#endif
- }
-
- ncr_script_copy_and_bind (np, (ncrcmd *) &script0, (ncrcmd *) np->script0, sizeof(struct script));
- ncr_script_copy_and_bind (np, (ncrcmd *) &scripth0, (ncrcmd *) np->scripth0, sizeof(struct scripth));
-
- /*
- ** Patch some variables in SCRIPTS
- */
- np->scripth0->pm0_data_addr[0] =
- cpu_to_scr(NCB_SCRIPT_PHYS(np, pm0_data));
- np->scripth0->pm1_data_addr[0] =
- cpu_to_scr(NCB_SCRIPT_PHYS(np, pm1_data));
-
- /*
- ** Patch if not Ultra 3 - Do not write to scntl4
- */
- if (np->features & FE_ULTRA3) {
- np->script0->resel_scntl4[0] = cpu_to_scr(SCR_LOAD_REL (scntl4, 1));
- np->script0->resel_scntl4[1] = cpu_to_scr(offsetof(struct tcb, uval));
- }
-
-
-#ifdef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- np->scripth0->script0_ba[0] = cpu_to_scr(vtobus(np->script0));
- np->scripth0->script0_ba64[0] = cpu_to_scr(vtobus(np->script0));
- np->scripth0->scripth0_ba64[0] = cpu_to_scr(vtobus(np->scripth0));
- np->scripth0->ram_seg64[0] = np->scr_ram_seg;
-#endif
- /*
- ** Prepare the idle and invalid task actions.
- */
- np->idletask.start = cpu_to_scr(NCB_SCRIPT_PHYS (np, idle));
- np->idletask.restart = cpu_to_scr(NCB_SCRIPTH_PHYS (np, bad_i_t_l));
- np->p_idletask = NCB_PHYS(np, idletask);
-
- np->notask.start = cpu_to_scr(NCB_SCRIPT_PHYS (np, idle));
- np->notask.restart = cpu_to_scr(NCB_SCRIPTH_PHYS (np, bad_i_t_l));
- np->p_notask = NCB_PHYS(np, notask);
-
- np->bad_i_t_l.start = cpu_to_scr(NCB_SCRIPT_PHYS (np, idle));
- np->bad_i_t_l.restart = cpu_to_scr(NCB_SCRIPTH_PHYS (np, bad_i_t_l));
- np->p_bad_i_t_l = NCB_PHYS(np, bad_i_t_l);
-
- np->bad_i_t_l_q.start = cpu_to_scr(NCB_SCRIPT_PHYS (np, idle));
- np->bad_i_t_l_q.restart = cpu_to_scr(NCB_SCRIPTH_PHYS (np,bad_i_t_l_q));
- np->p_bad_i_t_l_q = NCB_PHYS(np, bad_i_t_l_q);
-
- /*
- ** Allocate and prepare the bad lun table.
- */
- np->badluntbl = m_calloc_dma(256, "BADLUNTBL");
- if (!np->badluntbl)
- goto attach_error;
-
- assert (offsetof(struct lcb, resel_task) == 0);
- np->resel_badlun = cpu_to_scr(NCB_SCRIPTH_PHYS(np, resel_bad_lun));
-
- for (i = 0 ; i < 64 ; i++)
- np->badluntbl[i] = cpu_to_scr(NCB_PHYS(np, resel_badlun));
-
- /*
- ** Prepare the target bus address array.
- */
- np->scripth0->targtbl[0] = cpu_to_scr(vtobus(np->targtbl));
- for (i = 0 ; i < MAX_TARGET ; i++) {
- np->targtbl[i] = cpu_to_scr(NCB_PHYS(np, target[i]));
- np->target[i].b_luntbl = cpu_to_scr(vtobus(np->badluntbl));
- np->target[i].b_lun0 = cpu_to_scr(NCB_PHYS(np, resel_badlun));
- }
-
- /*
- ** Patch the script for LED support.
- */
-
- if (np->features & FE_LED0) {
- np->script0->idle[0] =
- cpu_to_scr(SCR_REG_REG(gpreg, SCR_OR, 0x01));
- np->script0->reselected[0] =
- cpu_to_scr(SCR_REG_REG(gpreg, SCR_AND, 0xfe));
- np->script0->start[0] =
- cpu_to_scr(SCR_REG_REG(gpreg, SCR_AND, 0xfe));
- }
-
- /*
- ** Patch the script to provide an extra clock cycle on
- ** data out phase - 53C1010_66MHz part only.
- ** (Fixed in rev. 1 of the chip)
- */
- if (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66 &&
- np->revision_id < 1){
- np->script0->datao_phase[0] =
- cpu_to_scr(SCR_REG_REG(scntl4, SCR_OR, 0x0c));
- }
-
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** If user does not want to use IMMEDIATE ARBITRATION
- ** when we are reselected while attempting to arbitrate,
- ** patch the SCRIPTS accordingly with a SCRIPT NO_OP.
- */
- if (!(driver_setup.iarb & 1))
- np->script0->ungetjob[0] = cpu_to_scr(SCR_NO_OP);
- /*
- ** If user wants IARB to be set when we win arbitration
- ** and have other jobs, compute the max number of consecutive
- ** settings of IARB hint before we leave devices a chance to
- ** arbitrate for reselection.
- */
- np->iarb_max = (driver_setup.iarb >> 4);
-#endif
-
- /*
- ** DEL 472 - 53C896 Rev 1 - Part Number 609-0393055 - ITEM 5.
- */
- if (np->device_id == PCI_DEVICE_ID_NCR_53C896 &&
- np->revision_id <= 0x1 && (np->features & FE_NOPM)) {
- np->scatter = ncr_scatter_896R1;
- np->script0->datai_phase[0] = cpu_to_scr(SCR_JUMP);
- np->script0->datai_phase[1] =
- cpu_to_scr(NCB_SCRIPTH_PHYS (np, tweak_pmj));
- np->script0->datao_phase[0] = cpu_to_scr(SCR_JUMP);
- np->script0->datao_phase[1] =
- cpu_to_scr(NCB_SCRIPTH_PHYS (np, tweak_pmj));
- }
- else
-#ifdef DEBUG_896R1
- np->scatter = ncr_scatter_896R1;
-#else
- np->scatter = ncr_scatter;
-#endif
-
- /*
- ** Reset chip.
- ** We should use ncr_soft_reset(), but we donnot want to do
- ** so, since we may not be safe if ABRT interrupt occurs due
- ** to the BIOS or previous O/S having enable this interrupt.
- **
- ** For C1010 need to set ABRT bit prior to SRST if SCRIPTs
- ** are running. Not true in this case.
- */
- ncr_chip_reset(np);
-
- /*
- ** Now check the cache handling of the pci chipset.
- */
-
- if (ncr_snooptest (np)) {
- printk (KERN_ERR "CACHE INCORRECTLY CONFIGURED.\n");
- goto attach_error;
- };
-
- /*
- ** Install the interrupt handler.
- ** If we synchonize the C code with SCRIPTS on interrupt,
- ** we donnot want to share the INTR line at all.
- */
- if (request_irq(device->slot.irq, sym53c8xx_intr,
-#ifdef SCSI_NCR_PCIQ_SYNC_ON_INTR
- ((driver_setup.irqm & 0x20) ? 0 : SA_INTERRUPT),
-#else
- ((driver_setup.irqm & 0x10) ? 0 : SA_SHIRQ) |
- 0,
-#endif
- NAME53C8XX, np)) {
- printk(KERN_ERR "%s: request irq %d failure\n",
- ncr_name(np), device->slot.irq);
- goto attach_error;
- }
- np->irq = device->slot.irq;
-
- /*
- ** After SCSI devices have been opened, we cannot
- ** reset the bus safely, so we do it here.
- ** Interrupt handler does the real work.
- ** Process the reset exception,
- ** if interrupts are not enabled yet.
- ** Then enable disconnects.
- */
- NCR_LOCK_NCB(np, flags);
- if (ncr_reset_scsi_bus(np, 0, driver_setup.settle_delay) != 0) {
- printk(KERN_ERR "%s: FATAL ERROR: CHECK SCSI BUS - CABLES, TERMINATION, DEVICE POWER etc.!\n", ncr_name(np));
-
- NCR_UNLOCK_NCB(np, flags);
- goto attach_error;
- }
- ncr_exception (np);
-
- /*
- ** The middle-level SCSI driver does not
- ** wait for devices to settle.
- ** Wait synchronously if more than 2 seconds.
- */
- if (driver_setup.settle_delay > 2) {
- printk(KERN_INFO "%s: waiting %d seconds for scsi devices to settle...\n",
- ncr_name(np), driver_setup.settle_delay);
- MDELAY (1000 * driver_setup.settle_delay);
- }
-
- /*
- ** start the timeout daemon
- */
- np->lasttime=0;
- ncr_timeout (np);
-
- /*
- ** use SIMPLE TAG messages by default
- */
-#ifdef SCSI_NCR_ALWAYS_SIMPLE_TAG
- np->order = M_SIMPLE_TAG;
-#endif
-
- /*
- ** Done.
- ** Fill Linux host instance structure
- ** and return success.
- */
- instance->max_channel = 0;
- instance->this_id = np->myaddr;
- instance->max_id = np->maxwide ? 16 : 8;
- instance->max_lun = MAX_LUN;
-#ifndef SCSI_NCR_IOMAPPED
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
- instance->base = (unsigned long) np->reg;
-#else
- instance->base = (char *) np->reg;
-#endif
-#endif
- instance->irq = np->irq;
- instance->unique_id = np->base_io;
- instance->io_port = np->base_io;
- instance->n_io_port = np->base_ws;
- instance->dma_channel = 0;
- instance->cmd_per_lun = MAX_TAGS;
- instance->can_queue = (MAX_START-4);
- scsi_set_device(instance, &device->pdev->dev);
-
- np->check_integrity = 0;
-
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- instance->check_integrity = 0;
-
-#ifdef SCSI_NCR_ENABLE_INTEGRITY_CHECK
- if ( !(driver_setup.bus_check & 0x04) ) {
- np->check_integrity = 1;
- instance->check_integrity = 1;
- }
-#endif
-#endif
-
- NCR_UNLOCK_NCB(np, flags);
-
- /*
- ** Now let the generic SCSI driver
- ** look for the SCSI devices on the bus ..
- */
- return 0;
-
-attach_error:
- if (!instance) return -1;
- printk(KERN_INFO "%s: giving up ...\n", ncr_name(np));
- if (np)
- ncr_free_resources(np);
- scsi_unregister(instance);
-
- return -1;
- }
-
-
-/*
-** Free controller resources.
-*/
-static void ncr_free_resources(ncb_p np)
-{
- ccb_p cp;
- tcb_p tp;
- lcb_p lp;
- int target, lun;
-
- if (np->irq)
- free_irq(np->irq, np);
- if (np->base_io)
- release_region(np->base_io, np->base_ws);
-#ifndef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- if (np->base_va)
- unmap_pci_mem(np->base_va, np->base_ws);
- if (np->base2_va)
- unmap_pci_mem(np->base2_va, np->base2_ws);
-#endif
- if (np->scripth0)
- m_free_dma(np->scripth0, sizeof(struct scripth), "SCRIPTH");
- if (np->script0)
- m_free_dma(np->script0, sizeof(struct script), "SCRIPT");
- if (np->squeue)
- m_free_dma(np->squeue, sizeof(ncrcmd)*(MAX_START*2), "SQUEUE");
- if (np->dqueue)
- m_free_dma(np->dqueue, sizeof(ncrcmd)*(MAX_START*2),"DQUEUE");
-
- while ((cp = np->ccbc) != NULL) {
- np->ccbc = cp->link_ccb;
- m_free_dma(cp, sizeof(*cp), "CCB");
- }
-
- if (np->badluntbl)
- m_free_dma(np->badluntbl, 256,"BADLUNTBL");
-
- for (target = 0; target < MAX_TARGET ; target++) {
- tp = &np->target[target];
- for (lun = 0 ; lun < MAX_LUN ; lun++) {
- lp = ncr_lp(np, tp, lun);
- if (!lp)
- continue;
- if (lp->tasktbl != &lp->tasktbl_0)
- m_free_dma(lp->tasktbl, MAX_TASKS*4, "TASKTBL");
- if (lp->cb_tags)
- m_free(lp->cb_tags, MAX_TAGS, "CB_TAGS");
- m_free_dma(lp, sizeof(*lp), "LCB");
- }
-#if MAX_LUN > 1
- if (tp->lmp)
- m_free(tp->lmp, MAX_LUN * sizeof(lcb_p), "LMP");
- if (tp->luntbl)
- m_free_dma(tp->luntbl, 256, "LUNTBL");
-#endif
- }
-
- if (np->targtbl)
- m_free_dma(np->targtbl, 256, "TARGTBL");
-
- m_free_dma(np, sizeof(*np), "NCB");
-}
-
-
-/*==========================================================
-**
-**
-** Done SCSI commands list management.
-**
-** We donnot enter the scsi_done() callback immediately
-** after a command has been seen as completed but we
-** insert it into a list which is flushed outside any kind
-** of driver critical section.
-** This allows to do minimal stuff under interrupt and
-** inside critical sections and to also avoid locking up
-** on recursive calls to driver entry points under SMP.
-** In fact, the only kernel point which is entered by the
-** driver with a driver lock set is get_free_pages(GFP_ATOMIC...)
-** that shall not reenter the driver under any circumstance.
-**
-**==========================================================
-*/
-static inline void ncr_queue_done_cmd(ncb_p np, Scsi_Cmnd *cmd)
-{
- unmap_scsi_data(np, cmd);
- cmd->host_scribble = (char *) np->done_list;
- np->done_list = cmd;
-}
-
-static inline void ncr_flush_done_cmds(Scsi_Cmnd *lcmd)
-{
- Scsi_Cmnd *cmd;
-
- while (lcmd) {
- cmd = lcmd;
- lcmd = (Scsi_Cmnd *) cmd->host_scribble;
- cmd->scsi_done(cmd);
- }
-}
-
-/*==========================================================
-**
-**
-** Prepare the next negotiation message for integrity check,
-** if needed.
-**
-** Fill in the part of message buffer that contains the
-** negotiation and the nego_status field of the CCB.
-** Returns the size of the message in bytes.
-**
-** If tp->ppr_negotiation is 1 and a M_REJECT occurs, then
-** we disable ppr_negotiation. If the first ppr_negotiation is
-** successful, set this flag to 2.
-**
-**==========================================================
-*/
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
-static int ncr_ic_nego(ncb_p np, ccb_p cp, Scsi_Cmnd *cmd, u_char *msgptr)
-{
- tcb_p tp = &np->target[cp->target];
- int msglen = 0;
- int nego = 0;
- u_char new_width, new_offset, new_period;
- u_char no_increase;
-
- if (tp->ppr_negotiation == 1) /* PPR message successful */
- tp->ppr_negotiation = 2;
-
- if (tp->inq_done) {
-
- if (!tp->ic_maximums_set) {
- tp->ic_maximums_set = 1;
-
- /*
- * Check against target, host and user limits
- */
- if ( (tp->inq_byte7 & INQ7_WIDE16) &&
- np->maxwide && tp->usrwide)
- tp->ic_max_width = 1;
- else
- tp->ic_max_width = 0;
-
-
- if ((tp->inq_byte7 & INQ7_SYNC) && tp->maxoffs)
- tp->ic_min_sync = (tp->minsync < np->minsync) ?
- np->minsync : tp->minsync;
- else
- tp->ic_min_sync = 255;
-
- tp->period = 1;
- tp->widedone = 1;
-
- /*
- * Enable PPR negotiation - only if Ultra3 support
- * is accessible.
- */
-
-#if 0
- if (tp->ic_max_width && (tp->ic_min_sync != 255 ))
- tp->ppr_negotiation = 1;
-#endif
- tp->ppr_negotiation = 0;
- if (np->features & FE_ULTRA3) {
- if (tp->ic_max_width && (tp->ic_min_sync == 0x09))
- tp->ppr_negotiation = 1;
- }
-
- if (!tp->ppr_negotiation)
- cmd->ic_nego &= ~NS_PPR;
- }
-
- if (DEBUG_FLAGS & DEBUG_IC) {
- printk("%s: cmd->ic_nego %d, 1st byte 0x%2X\n",
- ncr_name(np), cmd->ic_nego, cmd->cmnd[0]);
- }
-
- /* Previous command recorded a parity or an initiator
- * detected error condition. Force bus to narrow for this
- * target. Clear flag. Negotation on request sense.
- * Note: kernel forces 2 bus resets :o( but clears itself out.
- * Minor bug? in scsi_obsolete.c (ugly)
- */
- if (np->check_integ_par) {
- printk("%s: Parity Error. Target set to narrow.\n",
- ncr_name(np));
- tp->ic_max_width = 0;
- tp->widedone = tp->period = 0;
- }
-
- /* Initializing:
- * If ic_nego == NS_PPR, we are in the initial test for
- * PPR messaging support. If driver flag is clear, then
- * either we don't support PPR nego (narrow or async device)
- * or this is the second TUR and we have had a M. REJECT
- * or unexpected disconnect on the first PPR negotiation.
- * Do not negotiate, reset nego flags (in case a reset has
- * occurred), clear ic_nego and return.
- * General case: Kernel will clear flag on a fallback.
- * Do only SDTR or WDTR in the future.
- */
- if (!tp->ppr_negotiation && (cmd->ic_nego == NS_PPR )) {
- tp->ppr_negotiation = 0;
- cmd->ic_nego &= ~NS_PPR;
- tp->widedone = tp->period = 1;
- return msglen;
- }
- else if (( tp->ppr_negotiation && !(cmd->ic_nego & NS_PPR )) ||
- (!tp->ppr_negotiation && (cmd->ic_nego & NS_PPR )) ) {
- tp->ppr_negotiation = 0;
- cmd->ic_nego &= ~NS_PPR;
- }
-
- /*
- * Always check the PPR nego. flag bit if ppr_negotiation
- * is set. If the ic_nego PPR bit is clear,
- * there must have been a fallback. Do only
- * WDTR / SDTR in the future.
- */
- if ((tp->ppr_negotiation) && (!(cmd->ic_nego & NS_PPR)))
- tp->ppr_negotiation = 0;
-
- /* In case of a bus reset, ncr_negotiate will reset
- * the flags tp->widedone and tp->period to 0, forcing
- * a new negotiation. Do WDTR then SDTR. If PPR, do both.
- * Do NOT increase the period. It is possible for the Scsi_Cmnd
- * flags to be set to increase the period when a bus reset
- * occurs - we don't want to change anything.
- */
-
- no_increase = 0;
-
- if (tp->ppr_negotiation && (!tp->widedone) && (!tp->period) ) {
- cmd->ic_nego = NS_PPR;
- tp->widedone = tp->period = 1;
- no_increase = 1;
- }
- else if (!tp->widedone) {
- cmd->ic_nego = NS_WIDE;
- tp->widedone = 1;
- no_increase = 1;
- }
- else if (!tp->period) {
- cmd->ic_nego = NS_SYNC;
- tp->period = 1;
- no_increase = 1;
- }
-
- new_width = cmd->ic_nego_width & tp->ic_max_width;
-
- switch (cmd->ic_nego_sync) {
- case 2: /* increase the period */
- if (!no_increase) {
- if (tp->ic_min_sync <= 0x09)
- tp->ic_min_sync = 0x0A;
- else if (tp->ic_min_sync <= 0x0A)
- tp->ic_min_sync = 0x0C;
- else if (tp->ic_min_sync <= 0x0C)
- tp->ic_min_sync = 0x19;
- else if (tp->ic_min_sync <= 0x19)
- tp->ic_min_sync *= 2;
- else {
- tp->ic_min_sync = 255;
- cmd->ic_nego_sync = 0;
- tp->maxoffs = 0;
- }
- }
- new_period = tp->maxoffs?tp->ic_min_sync:0;
- new_offset = tp->maxoffs;
- break;
-
- case 1: /* nego. to maximum */
- new_period = tp->maxoffs?tp->ic_min_sync:0;
- new_offset = tp->maxoffs;
- break;
-
- case 0: /* nego to async */
- default:
- new_period = 0;
- new_offset = 0;
- break;
- };
-
-
- nego = NS_NOCHANGE;
- if (tp->ppr_negotiation) {
- u_char options_byte = 0;
-
- /*
- ** Must make sure data is consistent.
- ** If period is 9 and sync, must be wide and DT bit set.
- ** else period must be larger. If the width is 0,
- ** reset bus to wide but increase the period to 0x0A.
- ** Note: The strange else clause is due to the integrity check.
- ** If fails at 0x09, wide, the I.C. code will redo at the same
- ** speed but a narrow bus. The driver must take care of slowing
- ** the bus speed down.
- **
- ** The maximum offset in ST mode is 31, in DT mode 62 (1010/1010_66 only)
- */
- if ( (new_period==0x09) && new_offset) {
- if (new_width)
- options_byte = 0x02;
- else {
- tp->ic_min_sync = 0x0A;
- new_period = 0x0A;
- cmd->ic_nego_width = 1;
- new_width = 1;
- }
- }
- if (!options_byte && new_offset > np->maxoffs_st)
- new_offset = np->maxoffs_st;
-
- nego = NS_PPR;
-
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 6;
- msgptr[msglen++] = M_X_PPR_REQ;
- msgptr[msglen++] = new_period;
- msgptr[msglen++] = 0;
- msgptr[msglen++] = new_offset;
- msgptr[msglen++] = new_width;
- msgptr[msglen++] = options_byte;
-
- }
- else {
- switch (cmd->ic_nego & ~NS_PPR) {
- case NS_WIDE:
- /*
- ** WDTR negotiation on if device supports
- ** wide or if wide device forced narrow
- ** due to a parity error.
- */
-
- cmd->ic_nego_width &= tp->ic_max_width;
-
- if (tp->ic_max_width | np->check_integ_par) {
- nego = NS_WIDE;
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 2;
- msgptr[msglen++] = M_X_WIDE_REQ;
- msgptr[msglen++] = new_width;
- }
- break;
-
- case NS_SYNC:
- /*
- ** negotiate synchronous transfers
- ** Target must support sync transfers.
- ** Min. period = 0x0A, maximum offset of 31=0x1f.
- */
-
- if (tp->inq_byte7 & INQ7_SYNC) {
-
- if (new_offset && (new_period < 0x0A)) {
- tp->ic_min_sync = 0x0A;
- new_period = 0x0A;
- }
- if (new_offset > np->maxoffs_st)
- new_offset = np->maxoffs_st;
- nego = NS_SYNC;
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 3;
- msgptr[msglen++] = M_X_SYNC_REQ;
- msgptr[msglen++] = new_period;
- msgptr[msglen++] = new_offset;
- }
- else
- cmd->ic_nego_sync = 0;
- break;
-
- case NS_NOCHANGE:
- break;
- }
- }
-
- };
-
- cp->nego_status = nego;
- np->check_integ_par = 0;
-
- if (nego) {
- tp->nego_cp = cp;
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, nego == NS_WIDE ?
- "wide/narrow msgout":
- (nego == NS_SYNC ? "sync/async msgout" : "ppr msgout"),
- msgptr);
- };
- };
-
- return msglen;
-}
-#endif /* SCSI_NCR_INTEGRITY_CHECKING */
-
-/*==========================================================
-**
-**
-** Prepare the next negotiation message if needed.
-**
-** Fill in the part of message buffer that contains the
-** negotiation and the nego_status field of the CCB.
-** Returns the size of the message in bytes.
-**
-**
-**==========================================================
-*/
-
-
-static int ncr_prepare_nego(ncb_p np, ccb_p cp, u_char *msgptr)
-{
- tcb_p tp = &np->target[cp->target];
- int msglen = 0;
- int nego = 0;
- u_char width, offset, factor, last_byte;
-
- if (!np->check_integrity) {
- /* If integrity checking disabled, enable PPR messaging
- * if device supports wide, sync and ultra 3
- */
- if (tp->ppr_negotiation == 1) /* PPR message successful */
- tp->ppr_negotiation = 2;
-
- if ((tp->inq_done) && (!tp->ic_maximums_set)) {
- tp->ic_maximums_set = 1;
-
- /*
- * Issue PPR only if board is capable
- * and set-up for Ultra3 transfers.
- */
- tp->ppr_negotiation = 0;
- if ( (np->features & FE_ULTRA3) &&
- (tp->usrwide) && (tp->maxoffs) &&
- (tp->minsync == 0x09) )
- tp->ppr_negotiation = 1;
- }
- }
-
- if (tp->inq_done) {
- /*
- * Get the current width, offset and period
- */
- ncr_get_xfer_info( np, tp, &factor,
- &offset, &width);
-
- /*
- ** negotiate wide transfers ?
- */
-
- if (!tp->widedone) {
- if (tp->inq_byte7 & INQ7_WIDE16) {
- if (tp->ppr_negotiation)
- nego = NS_PPR;
- else
- nego = NS_WIDE;
-
- width = tp->usrwide;
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- if (tp->ic_done)
- width &= tp->ic_max_width;
-#endif
- } else
- tp->widedone=1;
-
- };
-
- /*
- ** negotiate synchronous transfers?
- */
-
- if ((nego != NS_WIDE) && !tp->period) {
- if (tp->inq_byte7 & INQ7_SYNC) {
- if (tp->ppr_negotiation)
- nego = NS_PPR;
- else
- nego = NS_SYNC;
-
- /* Check for async flag */
- if (tp->maxoffs == 0) {
- offset = 0;
- factor = 0;
- }
- else {
- offset = tp->maxoffs;
- factor = tp->minsync;
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- if ((tp->ic_done) &&
- (factor < tp->ic_min_sync))
- factor = tp->ic_min_sync;
-#endif
- }
-
- } else {
- offset = 0;
- factor = 0;
- tp->period =0xffff;
- PRINT_TARGET(np, cp->target);
- printk ("target did not report SYNC.\n");
- };
- };
- };
-
- switch (nego) {
- case NS_PPR:
- /*
- ** Must make sure data is consistent.
- ** If period is 9 and sync, must be wide and DT bit set
- ** else period must be larger.
- ** Maximum offset is 31=0x1f is ST mode, 62 if DT mode
- */
- last_byte = 0;
- if ( (factor==9) && offset) {
- if (!width) {
- factor = 0x0A;
- }
- else
- last_byte = 0x02;
- }
- if (!last_byte && offset > np->maxoffs_st)
- offset = np->maxoffs_st;
-
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 6;
- msgptr[msglen++] = M_X_PPR_REQ;
- msgptr[msglen++] = factor;
- msgptr[msglen++] = 0;
- msgptr[msglen++] = offset;
- msgptr[msglen++] = width;
- msgptr[msglen++] = last_byte;
- break;
- case NS_SYNC:
- /*
- ** Never negotiate faster than Ultra 2 (25ns periods)
- */
- if (offset && (factor < 0x0A)) {
- factor = 0x0A;
- tp->minsync = 0x0A;
- }
- if (offset > np->maxoffs_st)
- offset = np->maxoffs_st;
-
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 3;
- msgptr[msglen++] = M_X_SYNC_REQ;
- msgptr[msglen++] = factor;
- msgptr[msglen++] = offset;
- break;
- case NS_WIDE:
- msgptr[msglen++] = M_EXTENDED;
- msgptr[msglen++] = 2;
- msgptr[msglen++] = M_X_WIDE_REQ;
- msgptr[msglen++] = width;
- break;
- };
-
- cp->nego_status = nego;
-
- if (nego) {
- tp->nego_cp = cp;
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, nego == NS_WIDE ?
- "wide msgout":
- (nego == NS_SYNC ? "sync msgout" : "ppr msgout"),
- msgptr);
- };
- };
-
- return msglen;
-}
-
-/*==========================================================
-**
-**
-** Start execution of a SCSI command.
-** This is called from the generic SCSI driver.
-**
-**
-**==========================================================
-*/
-static int ncr_queue_command (ncb_p np, Scsi_Cmnd *cmd)
-{
-/* Scsi_Device *device = cmd->device; */
- tcb_p tp = &np->target[cmd->device->id];
- lcb_p lp = ncr_lp(np, tp, cmd->device->lun);
- ccb_p cp;
-
- u_char idmsg, *msgptr;
- u_int msglen;
- int direction;
- u_int32 lastp, goalp;
-
- /*---------------------------------------------
- **
- ** Some shortcuts ...
- **
- **---------------------------------------------
- */
- if ((cmd->device->id == np->myaddr ) ||
- (cmd->device->id >= MAX_TARGET) ||
- (cmd->device->lun >= MAX_LUN )) {
- return(DID_BAD_TARGET);
- }
-
- /*---------------------------------------------
- **
- ** Complete the 1st TEST UNIT READY command
- ** with error condition if the device is
- ** flagged NOSCAN, in order to speed up
- ** the boot.
- **
- **---------------------------------------------
- */
- if ((cmd->cmnd[0] == 0 || cmd->cmnd[0] == 0x12) &&
- (tp->usrflag & UF_NOSCAN)) {
- tp->usrflag &= ~UF_NOSCAN;
- return DID_BAD_TARGET;
- }
-
- if (DEBUG_FLAGS & DEBUG_TINY) {
- PRINT_ADDR(cmd);
- printk ("CMD=%x ", cmd->cmnd[0]);
- }
-
- /*---------------------------------------------------
- **
- ** Assign a ccb / bind cmd.
- ** If resetting, shorten settle_time if necessary
- ** in order to avoid spurious timeouts.
- ** If resetting or no free ccb,
- ** insert cmd into the waiting list.
- **
- **----------------------------------------------------
- */
- if (np->settle_time && cmd->timeout_per_command >= HZ) {
- u_long tlimit = ktime_get(cmd->timeout_per_command - HZ);
- if (ktime_dif(np->settle_time, tlimit) > 0)
- np->settle_time = tlimit;
- }
-
- if (np->settle_time || !(cp=ncr_get_ccb (np, cmd->device->id, cmd->device->lun))) {
- insert_into_waiting_list(np, cmd);
- return(DID_OK);
- }
- cp->cmd = cmd;
-
- /*----------------------------------------------------
- **
- ** Build the identify / tag / sdtr message
- **
- **----------------------------------------------------
- */
-
- idmsg = M_IDENTIFY | cp->lun;
-
- if (cp ->tag != NO_TAG || (lp && !(tp->usrflag & UF_NODISC)))
- idmsg |= 0x40;
-
- msgptr = cp->scsi_smsg;
- msglen = 0;
- msgptr[msglen++] = idmsg;
-
- if (cp->tag != NO_TAG) {
- char order = np->order;
-
- /*
- ** Force ordered tag if necessary to avoid timeouts
- ** and to preserve interactivity.
- */
- if (lp && ktime_exp(lp->tags_stime)) {
- lp->tags_si = !(lp->tags_si);
- if (lp->tags_sum[lp->tags_si]) {
- order = M_ORDERED_TAG;
- if ((DEBUG_FLAGS & DEBUG_TAGS)||bootverbose>0){
- PRINT_ADDR(cmd);
- printk("ordered tag forced.\n");
- }
- }
- lp->tags_stime = ktime_get(3*HZ);
- }
-
- if (order == 0) {
- /*
- ** Ordered write ops, unordered read ops.
- */
- switch (cmd->cmnd[0]) {
- case 0x08: /* READ_SMALL (6) */
- case 0x28: /* READ_BIG (10) */
- case 0xa8: /* READ_HUGE (12) */
- order = M_SIMPLE_TAG;
- break;
- default:
- order = M_ORDERED_TAG;
- }
- }
- msgptr[msglen++] = order;
- /*
- ** For less than 128 tags, actual tags are numbered
- ** 1,3,5,..2*MAXTAGS+1,since we may have to deal
- ** with devices that have problems with #TAG 0 or too
- ** great #TAG numbers. For more tags (up to 256),
- ** we use directly our tag number.
- */
-#if MAX_TASKS > (512/4)
- msgptr[msglen++] = cp->tag;
-#else
- msgptr[msglen++] = (cp->tag << 1) + 1;
-#endif
- }
-
- cp->host_flags = 0;
-
- /*----------------------------------------------------
- **
- ** Build the data descriptors
- **
- **----------------------------------------------------
- */
-
- direction = scsi_data_direction(cmd);
- if (direction != SCSI_DATA_NONE) {
- cp->segments = np->scatter (np, cp, cp->cmd);
- if (cp->segments < 0) {
- ncr_free_ccb(np, cp);
- return(DID_ERROR);
- }
- }
- else {
- cp->data_len = 0;
- cp->segments = 0;
- }
-
- /*---------------------------------------------------
- **
- ** negotiation required?
- **
- ** (nego_status is filled by ncr_prepare_nego())
- **
- **---------------------------------------------------
- */
-
- cp->nego_status = 0;
-
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- if ((np->check_integrity && tp->ic_done) || !np->check_integrity) {
- if ((!tp->widedone || !tp->period) && !tp->nego_cp && lp) {
- msglen += ncr_prepare_nego (np, cp, msgptr + msglen);
- }
- }
- else if (np->check_integrity && (cmd->ic_in_progress)) {
- msglen += ncr_ic_nego (np, cp, cmd, msgptr + msglen);
- }
- else if (np->check_integrity && cmd->ic_complete) {
- u_long current_period;
- u_char current_offset, current_width, current_factor;
-
- ncr_get_xfer_info (np, tp, ¤t_factor,
- ¤t_offset, ¤t_width);
-
- tp->ic_max_width = current_width;
- tp->ic_min_sync = current_factor;
-
- if (current_factor == 9) current_period = 125;
- else if (current_factor == 10) current_period = 250;
- else if (current_factor == 11) current_period = 303;
- else if (current_factor == 12) current_period = 500;
- else current_period = current_factor * 40;
-
- /*
- * Negotiation for this target is complete. Update flags.
- */
- tp->period = current_period;
- tp->widedone = 1;
- tp->ic_done = 1;
-
- printk("%s: Integrity Check Complete: \n", ncr_name(np));
-
- printk("%s: %s %s SCSI", ncr_name(np),
- current_offset?"SYNC":"ASYNC",
- tp->ic_max_width?"WIDE":"NARROW");
- if (current_offset) {
- u_long mbs = 10000 * (tp->ic_max_width + 1);
-
- printk(" %d.%d MB/s",
- (int) (mbs / current_period), (int) (mbs % current_period));
-
- printk(" (%d ns, %d offset)\n",
- (int) current_period/10, current_offset);
- }
- else
- printk(" %d MB/s. \n ", (tp->ic_max_width+1)*5);
- }
-#else
- if ((!tp->widedone || !tp->period) && !tp->nego_cp && lp) {
- msglen += ncr_prepare_nego (np, cp, msgptr + msglen);
- }
-#endif /* SCSI_NCR_INTEGRITY_CHECKING */
-
-
- /*----------------------------------------------------
- **
- ** Determine xfer direction.
- **
- **----------------------------------------------------
- */
- if (!cp->data_len)
- direction = SCSI_DATA_NONE;
-
- /*
- ** If data direction is UNKNOWN, speculate DATA_READ
- ** but prepare alternate pointers for WRITE in case
- ** of our speculation will be just wrong.
- ** SCRIPTS will swap values if needed.
- */
- switch(direction) {
- case SCSI_DATA_UNKNOWN:
- case SCSI_DATA_WRITE:
- goalp = NCB_SCRIPT_PHYS (np, data_out2) + 8;
- lastp = goalp - 8 - (cp->segments * (SCR_SG_SIZE*4));
- if (direction != SCSI_DATA_UNKNOWN)
- break;
- cp->phys.header.wgoalp = cpu_to_scr(goalp);
- cp->phys.header.wlastp = cpu_to_scr(lastp);
- /* fall through */
- case SCSI_DATA_READ:
- cp->host_flags |= HF_DATA_IN;
- goalp = NCB_SCRIPT_PHYS (np, data_in2) + 8;
- lastp = goalp - 8 - (cp->segments * (SCR_SG_SIZE*4));
- break;
- default:
- case SCSI_DATA_NONE:
- lastp = goalp = NCB_SCRIPTH_PHYS (np, no_data);
- break;
- }
-
- /*
- ** Set all pointers values needed by SCRIPTS.
- ** If direction is unknown, start at data_io.
- */
- cp->phys.header.lastp = cpu_to_scr(lastp);
- cp->phys.header.goalp = cpu_to_scr(goalp);
-
- if (direction == SCSI_DATA_UNKNOWN)
- cp->phys.header.savep =
- cpu_to_scr(NCB_SCRIPTH_PHYS (np, data_io));
- else
- cp->phys.header.savep= cpu_to_scr(lastp);
-
- /*
- ** Save the initial data pointer in order to be able
- ** to redo the command.
- ** We also have to save the initial lastp, since it
- ** will be changed to DATA_IO if we don't know the data
- ** direction and the device completes the command with
- ** QUEUE FULL status (without entering the data phase).
- */
- cp->startp = cp->phys.header.savep;
- cp->lastp0 = cp->phys.header.lastp;
-
- /*----------------------------------------------------
- **
- ** fill in ccb
- **
- **----------------------------------------------------
- **
- **
- ** physical -> virtual backlink
- ** Generic SCSI command
- */
-
- /*
- ** Startqueue
- */
- cp->phys.header.go.start = cpu_to_scr(NCB_SCRIPT_PHYS (np,select));
- cp->phys.header.go.restart = cpu_to_scr(NCB_SCRIPT_PHYS (np,resel_dsa));
- /*
- ** select
- */
- cp->phys.select.sel_id = cp->target;
- cp->phys.select.sel_scntl3 = tp->wval;
- cp->phys.select.sel_sxfer = tp->sval;
- cp->phys.select.sel_scntl4 = tp->uval;
- /*
- ** message
- */
- cp->phys.smsg.addr = cpu_to_scr(CCB_PHYS (cp, scsi_smsg));
- cp->phys.smsg.size = cpu_to_scr(msglen);
-
- /*
- ** command
- */
- memcpy(cp->cdb_buf, cmd->cmnd, MIN(cmd->cmd_len, sizeof(cp->cdb_buf)));
- cp->phys.cmd.addr = cpu_to_scr(CCB_PHYS (cp, cdb_buf[0]));
- cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
-
- /*
- ** status
- */
- cp->actualquirks = tp->quirks;
- cp->host_status = cp->nego_status ? HS_NEGOTIATE : HS_BUSY;
- cp->scsi_status = S_ILLEGAL;
- cp->xerr_status = 0;
- cp->extra_bytes = 0;
-
- /*
- ** extreme data pointer.
- ** shall be positive, so -1 is lower than lowest.:)
- */
- cp->ext_sg = -1;
- cp->ext_ofs = 0;
-
- /*----------------------------------------------------
- **
- ** Critical region: start this job.
- **
- **----------------------------------------------------
- */
-
- /*
- ** activate this job.
- */
-
- /*
- ** insert next CCBs into start queue.
- ** 2 max at a time is enough to flush the CCB wait queue.
- */
- if (lp)
- ncr_start_next_ccb(np, lp, 2);
- else
- ncr_put_start_queue(np, cp);
-
- /*
- ** Command is successfully queued.
- */
-
- return(DID_OK);
-}
-
-
-/*==========================================================
-**
-**
-** Insert a CCB into the start queue and wake up the
-** SCRIPTS processor.
-**
-**
-**==========================================================
-*/
-
-static void ncr_start_next_ccb(ncb_p np, lcb_p lp, int maxn)
-{
- XPT_QUEHEAD *qp;
- ccb_p cp;
-
- while (maxn-- && lp->queuedccbs < lp->queuedepth) {
- qp = xpt_remque_head(&lp->wait_ccbq);
- if (!qp)
- break;
- ++lp->queuedccbs;
- cp = xpt_que_entry(qp, struct ccb, link_ccbq);
- xpt_insque_tail(qp, &lp->busy_ccbq);
- lp->tasktbl[cp->tag == NO_TAG ? 0 : cp->tag] =
- cpu_to_scr(cp->p_ccb);
- ncr_put_start_queue(np, cp);
- }
-}
-
-static void ncr_put_start_queue(ncb_p np, ccb_p cp)
-{
- u_short qidx;
-
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** If the previously queued CCB is not yet done,
- ** set the IARB hint. The SCRIPTS will go with IARB
- ** for this job when starting the previous one.
- ** We leave devices a chance to win arbitration by
- ** not using more than 'iarb_max' consecutive
- ** immediate arbitrations.
- */
- if (np->last_cp && np->iarb_count < np->iarb_max) {
- np->last_cp->host_flags |= HF_HINT_IARB;
- ++np->iarb_count;
- }
- else
- np->iarb_count = 0;
- np->last_cp = cp;
-#endif
-
- /*
- ** insert into start queue.
- */
- qidx = np->squeueput + 2;
- if (qidx >= MAX_START*2) qidx = 0;
-
- np->squeue [qidx] = cpu_to_scr(np->p_idletask);
- MEMORY_BARRIER();
- np->squeue [np->squeueput] = cpu_to_scr(cp->p_ccb);
-
- np->squeueput = qidx;
- cp->queued = 1;
-
- if (DEBUG_FLAGS & DEBUG_QUEUE)
- printk ("%s: queuepos=%d.\n", ncr_name (np), np->squeueput);
-
- /*
- ** Script processor may be waiting for reselect.
- ** Wake it up.
- */
- MEMORY_BARRIER();
- OUTB (nc_istat, SIGP|np->istat_sem);
-}
-
-
-/*==========================================================
-**
-** Soft reset the chip.
-**
-** Some 896 and 876 chip revisions may hang-up if we set
-** the SRST (soft reset) bit at the wrong time when SCRIPTS
-** are running.
-** So, we need to abort the current operation prior to
-** soft resetting the chip.
-**
-**==========================================================
-*/
-
-static void ncr_chip_reset (ncb_p np)
-{
- OUTB (nc_istat, SRST);
- UDELAY (10);
- OUTB (nc_istat, 0);
-}
-
-static void ncr_soft_reset(ncb_p np)
-{
- u_char istat;
- int i;
-
- if (!(np->features & FE_ISTAT1) || !(INB (nc_istat1) & SRUN))
- goto do_chip_reset;
-
- OUTB (nc_istat, CABRT);
- for (i = 100000 ; i ; --i) {
- istat = INB (nc_istat);
- if (istat & SIP) {
- INW (nc_sist);
- }
- else if (istat & DIP) {
- if (INB (nc_dstat) & ABRT)
- break;
- }
- UDELAY(5);
- }
- OUTB (nc_istat, 0);
- if (!i)
- printk("%s: unable to abort current chip operation, "
- "ISTAT=0x%02x.\n", ncr_name(np), istat);
-do_chip_reset:
- ncr_chip_reset(np);
-}
-
-/*==========================================================
-**
-**
-** Start reset process.
-** The interrupt handler will reinitialize the chip.
-** The timeout handler will wait for settle_time before
-** clearing it and so resuming command processing.
-**
-**
-**==========================================================
-*/
-static void ncr_start_reset(ncb_p np)
-{
- (void) ncr_reset_scsi_bus(np, 1, driver_setup.settle_delay);
-}
-
-static int ncr_reset_scsi_bus(ncb_p np, int enab_int, int settle_delay)
-{
- u_int32 term;
- int retv = 0;
-
- np->settle_time = ktime_get(settle_delay * HZ);
-
- if (bootverbose > 1)
- printk("%s: resetting, "
- "command processing suspended for %d seconds\n",
- ncr_name(np), settle_delay);
-
- ncr_soft_reset(np); /* Soft reset the chip */
- UDELAY (2000); /* The 895/6 need time for the bus mode to settle */
- if (enab_int)
- OUTW (nc_sien, RST);
- /*
- ** Enable Tolerant, reset IRQD if present and
- ** properly set IRQ mode, prior to resetting the bus.
- */
- OUTB (nc_stest3, TE);
- OUTB (nc_dcntl, (np->rv_dcntl & IRQM));
- OUTB (nc_scntl1, CRST);
- UDELAY (200);
-
- if (!driver_setup.bus_check)
- goto out;
- /*
- ** Check for no terminators or SCSI bus shorts to ground.
- ** Read SCSI data bus, data parity bits and control signals.
- ** We are expecting RESET to be TRUE and other signals to be
- ** FALSE.
- */
- term = INB(nc_sstat0);
- term = ((term & 2) << 7) + ((term & 1) << 17); /* rst sdp0 */
- term |= ((INB(nc_sstat2) & 0x01) << 26) | /* sdp1 */
- ((INW(nc_sbdl) & 0xff) << 9) | /* d7-0 */
- ((INW(nc_sbdl) & 0xff00) << 10) | /* d15-8 */
- INB(nc_sbcl); /* req ack bsy sel atn msg cd io */
-
- if (!(np->features & FE_WIDE))
- term &= 0x3ffff;
-
- if (term != (2<<7)) {
- printk("%s: suspicious SCSI data while resetting the BUS.\n",
- ncr_name(np));
- printk("%s: %sdp0,d7-0,rst,req,ack,bsy,sel,atn,msg,c/d,i/o = "
- "0x%lx, expecting 0x%lx\n",
- ncr_name(np),
- (np->features & FE_WIDE) ? "dp1,d15-8," : "",
- (u_long)term, (u_long)(2<<7));
- if (driver_setup.bus_check == 1)
- retv = 1;
- }
-out:
- OUTB (nc_scntl1, 0);
- return retv;
-}
-
-/*==========================================================
-**
-**
-** Reset the SCSI BUS.
-** This is called from the generic SCSI driver.
-**
-**
-**==========================================================
-*/
-static int ncr_reset_bus (ncb_p np, Scsi_Cmnd *cmd, int sync_reset)
-{
-/* Scsi_Device *device = cmd->device; */
- ccb_p cp;
- int found;
-
-/*
- * Return immediately if reset is in progress.
- */
- if (np->settle_time) {
- return SCSI_RESET_PUNT;
- }
-/*
- * Start the reset process.
- * The script processor is then assumed to be stopped.
- * Commands will now be queued in the waiting list until a settle
- * delay of 2 seconds will be completed.
- */
- ncr_start_reset(np);
-/*
- * First, look in the wakeup list
- */
- for (found=0, cp=np->ccbc; cp; cp=cp->link_ccb) {
- /*
- ** look for the ccb of this command.
- */
- if (cp->host_status == HS_IDLE) continue;
- if (cp->cmd == cmd) {
- found = 1;
- break;
- }
- }
-/*
- * Then, look in the waiting list
- */
- if (!found && retrieve_from_waiting_list(0, np, cmd))
- found = 1;
-/*
- * Wake-up all awaiting commands with DID_RESET.
- */
- reset_waiting_list(np);
-/*
- * Wake-up all pending commands with HS_RESET -> DID_RESET.
- */
- ncr_wakeup(np, HS_RESET);
-/*
- * If the involved command was not in a driver queue, and the
- * scsi driver told us reset is synchronous, and the command is not
- * currently in the waiting list, complete it with DID_RESET status,
- * in order to keep it alive.
- */
- if (!found && sync_reset && !retrieve_from_waiting_list(0, np, cmd)) {
- SetScsiResult(cmd, DID_RESET, 0);
- ncr_queue_done_cmd(np, cmd);
- }
-
- return SCSI_RESET_SUCCESS;
-}
-
-/*==========================================================
-**
-**
-** Abort an SCSI command.
-** This is called from the generic SCSI driver.
-**
-**
-**==========================================================
-*/
-static int ncr_abort_command (ncb_p np, Scsi_Cmnd *cmd)
-{
-/* Scsi_Device *device = cmd->device; */
- ccb_p cp;
-
-/*
- * First, look for the scsi command in the waiting list
- */
- if (remove_from_waiting_list(np, cmd)) {
- SetScsiAbortResult(cmd);
- ncr_queue_done_cmd(np, cmd);
- return SCSI_ABORT_SUCCESS;
- }
-
-/*
- * Then, look in the wakeup list
- */
- for (cp=np->ccbc; cp; cp=cp->link_ccb) {
- /*
- ** look for the ccb of this command.
- */
- if (cp->host_status == HS_IDLE) continue;
- if (cp->cmd == cmd)
- break;
- }
-
- if (!cp) {
- return SCSI_ABORT_NOT_RUNNING;
- }
-
- /*
- ** Keep track we have to abort this job.
- */
- cp->to_abort = 1;
-
- /*
- ** Tell the SCRIPTS processor to stop
- ** and synchronize with us.
- */
- np->istat_sem = SEM;
-
- /*
- ** If there are no requests, the script
- ** processor will sleep on SEL_WAIT_RESEL.
- ** Let's wake it up, since it may have to work.
- */
- OUTB (nc_istat, SIGP|SEM);
-
- /*
- ** Tell user we are working for him.
- */
- return SCSI_ABORT_PENDING;
-}
-
-/*==========================================================
-**
-** Linux release module stuff.
-**
-** Called before unloading the module
-** Detach the host.
-** We have to free resources and halt the NCR chip
-**
-**==========================================================
-*/
-
-static int ncr_detach(ncb_p np)
-{
- int i;
-
- printk("%s: detaching ...\n", ncr_name(np));
-
-/*
-** Stop the ncr_timeout process
-** Set release_stage to 1 and wait that ncr_timeout() set it to 2.
-*/
- np->release_stage = 1;
- for (i = 50 ; i && np->release_stage != 2 ; i--) MDELAY (100);
- if (np->release_stage != 2)
- printk("%s: the timer seems to be already stopped\n",
- ncr_name(np));
- else np->release_stage = 2;
-
-/*
-** Reset NCR chip.
-** We should use ncr_soft_reset(), but we donnot want to do
-** so, since we may not be safe if interrupts occur.
-*/
-
- printk("%s: resetting chip\n", ncr_name(np));
- ncr_chip_reset(np);
-
-/*
-** Restore bios setting for automatic clock detection.
-*/
- OUTB(nc_dmode, np->sv_dmode);
- OUTB(nc_dcntl, np->sv_dcntl);
- OUTB(nc_ctest3, np->sv_ctest3);
- OUTB(nc_ctest4, np->sv_ctest4);
- OUTB(nc_ctest5, np->sv_ctest5);
- OUTB(nc_gpcntl, np->sv_gpcntl);
- OUTB(nc_stest2, np->sv_stest2);
-
- ncr_selectclock(np, np->sv_scntl3);
-/*
-** Free host resources
-*/
- ncr_free_resources(np);
-
- return 1;
-}
-
-/*==========================================================
-**
-**
-** Complete execution of a SCSI command.
-** Signal completion to the generic SCSI driver.
-**
-**
-**==========================================================
-*/
-
-void ncr_complete (ncb_p np, ccb_p cp)
-{
- Scsi_Cmnd *cmd;
- tcb_p tp;
- lcb_p lp;
-
- /*
- ** Sanity check
- */
- if (!cp || !cp->cmd)
- return;
-
- /*
- ** Print some debugging info.
- */
-
- if (DEBUG_FLAGS & DEBUG_TINY)
- printk ("CCB=%lx STAT=%x/%x\n", (unsigned long)cp,
- cp->host_status,cp->scsi_status);
-
- /*
- ** Get command, target and lun pointers.
- */
-
- cmd = cp->cmd;
- cp->cmd = NULL;
- tp = &np->target[cp->target];
- lp = ncr_lp(np, tp, cp->lun);
-
- /*
- ** We donnot queue more than 1 ccb per target
- ** with negotiation at any time. If this ccb was
- ** used for negotiation, clear this info in the tcb.
- */
-
- if (cp == tp->nego_cp)
- tp->nego_cp = 0;
-
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** We just complete the last queued CCB.
- ** Clear this info that is no more relevant.
- */
- if (cp == np->last_cp)
- np->last_cp = 0;
-#endif
-
- /*
- ** If auto-sense performed, change scsi status,
- ** Otherwise, compute the residual.
- */
- if (cp->host_flags & HF_AUTO_SENSE) {
- cp->scsi_status = cp->sv_scsi_status;
- cp->xerr_status = cp->sv_xerr_status;
- }
- else {
- cp->resid = 0;
- if (cp->xerr_status ||
- cp->phys.header.lastp != cp->phys.header.goalp)
- cp->resid = ncr_compute_residual(np, cp);
- }
-
- /*
- ** Check for extended errors.
- */
-
- if (cp->xerr_status) {
- if (cp->xerr_status & XE_PARITY_ERR) {
- PRINT_ADDR(cmd);
- printk ("unrecovered SCSI parity error.\n");
- }
- if (cp->xerr_status & XE_EXTRA_DATA) {
- PRINT_ADDR(cmd);
- printk ("extraneous data discarded.\n");
- }
- if (cp->xerr_status & XE_BAD_PHASE) {
- PRINT_ADDR(cmd);
- printk ("invalid scsi phase (4/5).\n");
- }
- if (cp->xerr_status & XE_SODL_UNRUN) {
- PRINT_ADDR(cmd);
- printk ("ODD transfer in DATA OUT phase.\n");
- }
- if (cp->xerr_status & XE_SWIDE_OVRUN){
- PRINT_ADDR(cmd);
- printk ("ODD transfer in DATA IN phase.\n");
- }
-
- if (cp->host_status==HS_COMPLETE)
- cp->host_status = HS_FAIL;
- }
-
- /*
- ** Print out any error for debugging purpose.
- */
- if (DEBUG_FLAGS & (DEBUG_RESULT|DEBUG_TINY)) {
- if (cp->host_status!=HS_COMPLETE || cp->scsi_status!=S_GOOD ||
- cp->resid) {
- PRINT_ADDR(cmd);
- printk ("ERROR: cmd=%x host_status=%x scsi_status=%x "
- "data_len=%d residual=%d\n",
- cmd->cmnd[0], cp->host_status, cp->scsi_status,
- cp->data_len, cp->resid);
- }
- }
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,99)
- /*
- ** Move residual byte count to user structure.
- */
- cmd->resid = cp->resid;
-#endif
- /*
- ** Check the status.
- */
- if ( (cp->host_status == HS_COMPLETE)
- && (cp->scsi_status == S_GOOD ||
- cp->scsi_status == S_COND_MET)) {
- /*
- ** All went well (GOOD status).
- ** CONDITION MET status is returned on
- ** `Pre-Fetch' or `Search data' success.
- */
- SetScsiResult(cmd, DID_OK, cp->scsi_status);
-
- /*
- ** Allocate the lcb if not yet.
- */
- if (!lp)
- ncr_alloc_lcb (np, cp->target, cp->lun);
-
- /*
- ** On standard INQUIRY response (EVPD and CmDt
- ** not set), setup logical unit according to
- ** announced capabilities (we need the 1rst 8 bytes).
- */
- if (cmd->cmnd[0] == 0x12 && !(cmd->cmnd[1] & 0x3) &&
- cmd->request_bufflen - cp->resid > 7 && !cmd->use_sg) {
- sync_scsi_data(np, cmd); /* SYNC the data */
- ncr_setup_lcb (np, cp->target, cp->lun,
- (char *) cmd->request_buffer);
- }
-
- /*
- ** If tags was reduced due to queue full,
- ** increase tags if 1000 good status received.
- */
- if (lp && lp->usetags && lp->numtags < lp->maxtags) {
- ++lp->num_good;
- if (lp->num_good >= 1000) {
- lp->num_good = 0;
- ++lp->numtags;
- ncr_setup_tags (np, cp->target, cp->lun);
- }
- }
- } else if ((cp->host_status == HS_COMPLETE)
- && (cp->scsi_status == S_CHECK_COND)) {
- /*
- ** Check condition code
- */
- SetScsiResult(cmd, DID_OK, S_CHECK_COND);
-
- if (DEBUG_FLAGS & (DEBUG_RESULT|DEBUG_TINY)) {
- PRINT_ADDR(cmd);
- ncr_printl_hex("sense data:", cmd->sense_buffer, 14);
- }
- } else if ((cp->host_status == HS_COMPLETE)
- && (cp->scsi_status == S_CONFLICT)) {
- /*
- ** Reservation Conflict condition code
- */
- SetScsiResult(cmd, DID_OK, S_CONFLICT);
-
- } else if ((cp->host_status == HS_COMPLETE)
- && (cp->scsi_status == S_BUSY ||
- cp->scsi_status == S_QUEUE_FULL)) {
-
- /*
- ** Target is busy.
- */
- SetScsiResult(cmd, DID_OK, cp->scsi_status);
-
- } else if ((cp->host_status == HS_SEL_TIMEOUT)
- || (cp->host_status == HS_TIMEOUT)) {
-
- /*
- ** No response
- */
- SetScsiResult(cmd, DID_TIME_OUT, cp->scsi_status);
-
- } else if (cp->host_status == HS_RESET) {
-
- /*
- ** SCSI bus reset
- */
- SetScsiResult(cmd, DID_RESET, cp->scsi_status);
-
- } else if (cp->host_status == HS_ABORTED) {
-
- /*
- ** Transfer aborted
- */
- SetScsiAbortResult(cmd);
-
- } else {
- int did_status;
-
- /*
- ** Other protocol messes
- */
- PRINT_ADDR(cmd);
- printk ("COMMAND FAILED (%x %x) @%p.\n",
- cp->host_status, cp->scsi_status, cp);
-
- did_status = DID_ERROR;
- if (cp->xerr_status & XE_PARITY_ERR)
- did_status = DID_PARITY;
-
- SetScsiResult(cmd, did_status, cp->scsi_status);
- }
-
- /*
- ** trace output
- */
-
- if (tp->usrflag & UF_TRACE) {
- PRINT_ADDR(cmd);
- printk (" CMD:");
- ncr_print_hex(cmd->cmnd, cmd->cmd_len);
-
- if (cp->host_status==HS_COMPLETE) {
- switch (cp->scsi_status) {
- case S_GOOD:
- printk (" GOOD");
- break;
- case S_CHECK_COND:
- printk (" SENSE:");
- ncr_print_hex(cmd->sense_buffer, 14);
- break;
- default:
- printk (" STAT: %x\n", cp->scsi_status);
- break;
- }
- } else printk (" HOSTERROR: %x", cp->host_status);
- printk ("\n");
- }
-
- /*
- ** Free this ccb
- */
- ncr_free_ccb (np, cp);
-
- /*
- ** requeue awaiting scsi commands for this lun.
- */
- if (lp && lp->queuedccbs < lp->queuedepth &&
- !xpt_que_empty(&lp->wait_ccbq))
- ncr_start_next_ccb(np, lp, 2);
-
- /*
- ** requeue awaiting scsi commands for this controller.
- */
- if (np->waiting_list)
- requeue_waiting_list(np);
-
- /*
- ** signal completion to generic driver.
- */
- ncr_queue_done_cmd(np, cmd);
-}
-
-/*==========================================================
-**
-**
-** Signal all (or one) control block done.
-**
-**
-**==========================================================
-*/
-
-/*
-** The NCR has completed CCBs.
-** Look at the DONE QUEUE.
-**
-** On architectures that may reorder LOAD/STORE operations,
-** a memory barrier may be needed after the reading of the
-** so-called `flag' and prior to dealing with the data.
-*/
-int ncr_wakeup_done (ncb_p np)
-{
- ccb_p cp;
- int i, n;
- u_long dsa;
-
- n = 0;
- i = np->dqueueget;
- while (1) {
- dsa = scr_to_cpu(np->dqueue[i]);
- if (!dsa)
- break;
- np->dqueue[i] = 0;
- if ((i = i+2) >= MAX_START*2)
- i = 0;
-
- cp = ncr_ccb_from_dsa(np, dsa);
- if (cp) {
- MEMORY_BARRIER();
- ncr_complete (np, cp);
- ++n;
- }
- else
- printk (KERN_ERR "%s: bad DSA (%lx) in done queue.\n",
- ncr_name(np), dsa);
- }
- np->dqueueget = i;
-
- return n;
-}
-
-/*
-** Complete all active CCBs.
-*/
-void ncr_wakeup (ncb_p np, u_long code)
-{
- ccb_p cp = np->ccbc;
-
- while (cp) {
- if (cp->host_status != HS_IDLE) {
- cp->host_status = code;
- ncr_complete (np, cp);
- }
- cp = cp->link_ccb;
- }
-}
-
-/*==========================================================
-**
-**
-** Start NCR chip.
-**
-**
-**==========================================================
-*/
-
-void ncr_init (ncb_p np, int reset, char * msg, u_long code)
-{
- int i;
- u_long phys;
-
- /*
- ** Reset chip if asked, otherwise just clear fifos.
- */
-
- if (reset)
- ncr_soft_reset(np);
- else {
- OUTB (nc_stest3, TE|CSF);
- OUTONB (nc_ctest3, CLF);
- }
-
- /*
- ** Message.
- */
-
- if (msg) printk (KERN_INFO "%s: restart (%s).\n", ncr_name (np), msg);
-
- /*
- ** Clear Start Queue
- */
- phys = np->p_squeue;
- np->queuedepth = MAX_START - 1; /* 1 entry needed as end marker */
- for (i = 0; i < MAX_START*2; i += 2) {
- np->squeue[i] = cpu_to_scr(np->p_idletask);
- np->squeue[i+1] = cpu_to_scr(phys + (i+2)*4);
- }
- np->squeue[MAX_START*2-1] = cpu_to_scr(phys);
-
-
- /*
- ** Start at first entry.
- */
- np->squeueput = 0;
- np->scripth0->startpos[0] = cpu_to_scr(phys);
-
- /*
- ** Clear Done Queue
- */
- phys = vtobus(np->dqueue);
- for (i = 0; i < MAX_START*2; i += 2) {
- np->dqueue[i] = 0;
- np->dqueue[i+1] = cpu_to_scr(phys + (i+2)*4);
- }
- np->dqueue[MAX_START*2-1] = cpu_to_scr(phys);
-
- /*
- ** Start at first entry.
- */
- np->scripth0->done_pos[0] = cpu_to_scr(phys);
- np->dqueueget = 0;
-
- /*
- ** Wakeup all pending jobs.
- */
- ncr_wakeup (np, code);
-
- /*
- ** Init chip.
- */
-
- OUTB (nc_istat, 0x00 ); /* Remove Reset, abort */
- UDELAY (2000); /* The 895 needs time for the bus mode to settle */
-
- OUTB (nc_scntl0, np->rv_scntl0 | 0xc0);
- /* full arb., ena parity, par->ATN */
- OUTB (nc_scntl1, 0x00); /* odd parity, and remove CRST!! */
-
- ncr_selectclock(np, np->rv_scntl3); /* Select SCSI clock */
-
- OUTB (nc_scid , RRE|np->myaddr); /* Adapter SCSI address */
- OUTW (nc_respid, 1ul<<np->myaddr); /* Id to respond to */
- OUTB (nc_istat , SIGP ); /* Signal Process */
- OUTB (nc_dmode , np->rv_dmode); /* Burst length, dma mode */
- OUTB (nc_ctest5, np->rv_ctest5); /* Large fifo + large burst */
-
- OUTB (nc_dcntl , NOCOM|np->rv_dcntl); /* Protect SFBR */
- OUTB (nc_ctest3, np->rv_ctest3); /* Write and invalidate */
- OUTB (nc_ctest4, np->rv_ctest4); /* Master parity checking */
-
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66)){
- OUTB (nc_stest2, EXT|np->rv_stest2);
- /* Extended Sreq/Sack filtering, not supported in C1010/C1010_66 */
- }
- OUTB (nc_stest3, TE); /* TolerANT enable */
- OUTB (nc_stime0, 0x0c); /* HTH disabled STO 0.25 sec */
-
- /*
- ** DEL 441 - 53C876 Rev 5 - Part Number 609-0392787/2788 - ITEM 2.
- ** Disable overlapped arbitration for all dual-function
- ** devices, regardless revision id.
- ** We may consider it is a post-chip-design feature. ;-)
- **
- ** Errata applies to all 896 and 1010 parts.
- */
- if (np->device_id == PCI_DEVICE_ID_NCR_53C875)
- OUTB (nc_ctest0, (1<<5));
- else if (np->device_id == PCI_DEVICE_ID_NCR_53C896 ||
- np->device_id == PCI_DEVICE_ID_LSI_53C1010 ||
- np->device_id == PCI_DEVICE_ID_LSI_53C1010_66 )
- np->rv_ccntl0 |= DPR;
-
- /*
- ** C1010_66MHz rev 0 part requies AIPCNTL1 bit 3 to be set.
- */
- if (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)
- OUTB(nc_aipcntl1, (1<<3));
-
- /*
- ** Write CCNTL0/CCNTL1 for chips capable of 64 bit addressing
- ** and/or hardware phase mismatch, since only such chips
- ** seem to support those IO registers.
- */
- if (np->features & (FE_DAC | FE_NOPM)) {
- OUTB (nc_ccntl0, np->rv_ccntl0);
- OUTB (nc_ccntl1, np->rv_ccntl1);
- }
-
- /*
- ** If phase mismatch handled by scripts (53C895A or 53C896
- ** or 53C1010 or 53C1010_66), set PM jump addresses.
- */
-
- if (np->features & FE_NOPM) {
- printk(KERN_INFO "%s: handling phase mismatch from SCRIPTS.\n",
- ncr_name(np));
- OUTL (nc_pmjad1, NCB_SCRIPTH_PHYS (np, pm_handle));
- OUTL (nc_pmjad2, NCB_SCRIPTH_PHYS (np, pm_handle));
- }
-
- /*
- ** Enable GPIO0 pin for writing if LED support from SCRIPTS.
- ** Also set GPIO5 and clear GPIO6 if hardware LED control.
- */
-
- if (np->features & FE_LED0)
- OUTB(nc_gpcntl, INB(nc_gpcntl) & ~0x01);
- else if (np->features & FE_LEDC)
- OUTB(nc_gpcntl, (INB(nc_gpcntl) & ~0x41) | 0x20);
-
-
- /*
- ** enable ints
- */
-
- OUTW (nc_sien , STO|HTH|MA|SGE|UDC|RST|PAR);
- OUTB (nc_dien , MDPE|BF|SSI|SIR|IID);
-
- /*
- ** For 895/895A/896/c1010
- ** Enable SBMC interrupt and save current SCSI bus mode.
- */
- if ( (np->features & FE_ULTRA2) || (np->features & FE_ULTRA3) ) {
- OUTONW (nc_sien, SBMC);
- np->scsi_mode = INB (nc_stest4) & SMODE;
- }
-
- /*
- ** Fill in target structure.
- ** Reinitialize usrsync.
- ** Reinitialize usrwide.
- ** Prepare sync negotiation according to actual SCSI bus mode.
- */
-
- for (i=0;i<MAX_TARGET;i++) {
- tcb_p tp = &np->target[i];
-
- tp->to_reset = 0;
-
- tp->sval = 0;
- tp->wval = np->rv_scntl3;
- tp->uval = np->rv_scntl4;
-
- if (tp->usrsync != 255) {
- if (tp->usrsync <= np->maxsync) {
- if (tp->usrsync < np->minsync) {
- tp->usrsync = np->minsync;
- }
- }
- else
- tp->usrsync = 255;
- };
-
- if (tp->usrwide > np->maxwide)
- tp->usrwide = np->maxwide;
-
- ncr_negotiate (np, tp);
- }
-
- /*
- ** Download SCSI SCRIPTS to on-chip RAM if present,
- ** and start script processor.
- ** We do the download preferently from the CPU.
- ** For platforms that may not support PCI memory mapping,
- ** we use a simple SCRIPTS that performs MEMORY MOVEs.
- */
- if (np->base2_ba) {
- if (bootverbose)
- printk ("%s: Downloading SCSI SCRIPTS.\n",
- ncr_name(np));
-#ifdef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- if (np->base2_ws == 8192)
- phys = NCB_SCRIPTH0_PHYS (np, start_ram64);
- else
- phys = NCB_SCRIPTH_PHYS (np, start_ram);
-#else
- if (np->base2_ws == 8192) {
- memcpy_to_pci(np->base2_va + 4096,
- np->scripth0, sizeof(struct scripth));
- OUTL (nc_mmws, np->scr_ram_seg);
- OUTL (nc_mmrs, np->scr_ram_seg);
- OUTL (nc_sfs, np->scr_ram_seg);
- phys = NCB_SCRIPTH_PHYS (np, start64);
- }
- else
- phys = NCB_SCRIPT_PHYS (np, init);
- memcpy_to_pci(np->base2_va, np->script0, sizeof(struct script));
-#endif /* SCSI_NCR_PCI_MEM_NOT_SUPPORTED */
- }
- else
- phys = NCB_SCRIPT_PHYS (np, init);
-
- np->istat_sem = 0;
-
- OUTL (nc_dsa, np->p_ncb);
- OUTL_DSP (phys);
-}
-
-/*==========================================================
-**
-** Prepare the negotiation values for wide and
-** synchronous transfers.
-**
-**==========================================================
-*/
-
-static void ncr_negotiate (struct ncb* np, struct tcb* tp)
-{
- /*
- ** minsync unit is 4ns !
- */
-
- u_long minsync = tp->usrsync;
-
- /*
- ** SCSI bus mode limit
- */
-
- if (np->scsi_mode && np->scsi_mode == SMODE_SE) {
- if (minsync < 12) minsync = 12;
- }
-
- /*
- ** our limit ..
- */
-
- if (minsync < np->minsync)
- minsync = np->minsync;
-
- /*
- ** divider limit
- */
-
- if (minsync > np->maxsync)
- minsync = 255;
-
- tp->minsync = minsync;
- tp->maxoffs = (minsync<255 ? np->maxoffs : 0);
-
- /*
- ** period=0: has to negotiate sync transfer
- */
-
- tp->period=0;
-
- /*
- ** widedone=0: has to negotiate wide transfer
- */
- tp->widedone=0;
-}
-
-/*==========================================================
-**
-** Get clock factor and sync divisor for a given
-** synchronous factor period.
-** Returns the clock factor (in sxfer) and scntl3
-** synchronous divisor field.
-**
-**==========================================================
-*/
-
-static void ncr_getsync(ncb_p np, u_char sfac, u_char *fakp, u_char *scntl3p)
-{
- u_long clk = np->clock_khz; /* SCSI clock frequency in kHz */
- int div = np->clock_divn; /* Number of divisors supported */
- u_long fak; /* Sync factor in sxfer */
- u_long per; /* Period in tenths of ns */
- u_long kpc; /* (per * clk) */
-
- /*
- ** Compute the synchronous period in tenths of nano-seconds
- ** from sfac.
- **
- ** Note, if sfac == 9, DT is being used. Double the period of 125
- ** to 250.
- */
- if (sfac <= 10) per = 250;
- else if (sfac == 11) per = 303;
- else if (sfac == 12) per = 500;
- else per = 40 * sfac;
-
- /*
- ** Look for the greatest clock divisor that allows an
- ** input speed faster than the period.
- */
- kpc = per * clk;
- while (--div >= 0)
- if (kpc >= (div_10M[div] << 2)) break;
-
- /*
- ** Calculate the lowest clock factor that allows an output
- ** speed not faster than the period.
- */
- fak = (kpc - 1) / div_10M[div] + 1;
-
-#if 0 /* This optimization does not seem very useful */
-
- per = (fak * div_10M[div]) / clk;
-
- /*
- ** Why not to try the immediate lower divisor and to choose
- ** the one that allows the fastest output speed ?
- ** We don't want input speed too much greater than output speed.
- */
- if (div >= 1 && fak < 8) {
- u_long fak2, per2;
- fak2 = (kpc - 1) / div_10M[div-1] + 1;
- per2 = (fak2 * div_10M[div-1]) / clk;
- if (per2 < per && fak2 <= 8) {
- fak = fak2;
- per = per2;
- --div;
- }
- }
-#endif
-
- if (fak < 4) fak = 4; /* Should never happen, too bad ... */
-
- /*
- ** Compute and return sync parameters for the ncr
- */
- *fakp = fak - 4;
-
- /*
- ** If sfac < 25, and 8xx parts, desire that the chip operate at
- ** least at Ultra speeds. Must set bit 7 of scntl3.
- ** For C1010, do not set this bit. If operating at Ultra3 speeds,
- ** set the U3EN bit instead.
- */
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- *scntl3p = (div+1) << 4;
- *fakp = 0;
- }
- else {
- *scntl3p = ((div+1) << 4) + (sfac < 25 ? 0x80 : 0);
- *fakp = fak - 4;
- }
-}
-
-/*==========================================================
-**
-** Utility routine to return the current bus width
-** synchronous period and offset.
-** Utilizes target sval, wval and uval
-**
-**==========================================================
-*/
-static void ncr_get_xfer_info(ncb_p np, tcb_p tp, u_char *factor,
- u_char *offset, u_char *width)
-{
-
- u_char idiv;
- u_long period;
-
- *width = (tp->wval & EWS) ? 1 : 0;
-
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66))
- *offset = (tp->sval & 0x3f);
- else
- *offset = (tp->sval & 0x1f);
-
- /*
- * Midlayer signal to the driver that all of the scsi commands
- * for the integrity check have completed. Save the negotiated
- * parameters (extracted from sval, wval and uval).
- * See ncr_setsync for alg. details.
- */
-
- idiv = (tp->wval>>4) & 0x07;
-
- if ( *offset && idiv ) {
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)){
- if (tp->uval & 0x80)
- period = (2*div_10M[idiv-1])/np->clock_khz;
- else
- period = (4*div_10M[idiv-1])/np->clock_khz;
- }
- else
- period = (((tp->sval>>5)+4)*div_10M[idiv-1])/np->clock_khz;
- }
- else
- period = 0xffff;
-
- if (period <= 125) *factor = 9;
- else if (period <= 250) *factor = 10;
- else if (period <= 303) *factor = 11;
- else if (period <= 500) *factor = 12;
- else *factor = (period + 40 - 1) / 40;
-
-}
-
-
-/*==========================================================
-**
-** Set actual values, sync status and patch all ccbs of
-** a target according to new sync/wide agreement.
-**
-**==========================================================
-*/
-
-static void ncr_set_sync_wide_status (ncb_p np, u_char target)
-{
- ccb_p cp = np->ccbc;
- tcb_p tp = &np->target[target];
-
- /*
- ** set actual value and sync_status
- **
- ** TEMP register contains current scripts address
- ** which is data type/direction/dependent.
- */
- OUTB (nc_sxfer, tp->sval);
- OUTB (nc_scntl3, tp->wval);
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66))
- OUTB (nc_scntl4, tp->uval);
-
- /*
- ** patch ALL ccbs of this target.
- */
- for (cp = np->ccbc; cp; cp = cp->link_ccb) {
- if (cp->host_status == HS_IDLE)
- continue;
- if (cp->target != target)
- continue;
- cp->phys.select.sel_scntl3 = tp->wval;
- cp->phys.select.sel_sxfer = tp->sval;
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66))
- cp->phys.select.sel_scntl4 = tp->uval;
- };
-}
-
-/*==========================================================
-**
-** Switch sync mode for current job and it's target
-**
-**==========================================================
-*/
-
-static void ncr_setsync (ncb_p np, ccb_p cp, u_char scntl3, u_char sxfer,
- u_char scntl4)
-{
- tcb_p tp;
- u_char target = INB (nc_sdid) & 0x0f;
- u_char idiv;
- u_char offset;
-
- assert (cp);
- if (!cp) return;
-
- assert (target == (cp->target & 0xf));
-
- tp = &np->target[target];
-
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- offset = sxfer & 0x3f; /* bits 5-0 */
- scntl3 = (scntl3 & 0xf0) | (tp->wval & EWS);
- scntl4 = (scntl4 & 0x80);
- }
- else {
- offset = sxfer & 0x1f; /* bits 4-0 */
- if (!scntl3 || !offset)
- scntl3 = np->rv_scntl3;
-
- scntl3 = (scntl3 & 0xf0) | (tp->wval & EWS) |
- (np->rv_scntl3 & 0x07);
- }
-
-
- /*
- ** Deduce the value of controller sync period from scntl3.
- ** period is in tenths of nano-seconds.
- */
-
- idiv = ((scntl3 >> 4) & 0x7);
- if ( offset && idiv) {
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- /* Note: If extra data hold clocks are used,
- * the formulas below must be modified.
- * When scntl4 == 0, ST mode.
- */
- if (scntl4 & 0x80)
- tp->period = (2*div_10M[idiv-1])/np->clock_khz;
- else
- tp->period = (4*div_10M[idiv-1])/np->clock_khz;
- }
- else
- tp->period = (((sxfer>>5)+4)*div_10M[idiv-1])/np->clock_khz;
- }
- else
- tp->period = 0xffff;
-
-
- /*
- ** Stop there if sync parameters are unchanged
- */
- if (tp->sval == sxfer && tp->wval == scntl3 && tp->uval == scntl4) return;
- tp->sval = sxfer;
- tp->wval = scntl3;
- tp->uval = scntl4;
-
- /*
- ** Bells and whistles ;-)
- ** Donnot announce negotiations due to auto-sense,
- ** unless user really want us to be verbose. :)
- */
- if ( bootverbose < 2 && (cp->host_flags & HF_AUTO_SENSE))
- goto next;
- PRINT_TARGET(np, target);
- if (offset) {
- unsigned f10 = 100000 << (tp->widedone ? tp->widedone -1 : 0);
- unsigned mb10 = (f10 + tp->period/2) / tp->period;
- char *scsi;
-
- /*
- ** Disable extended Sreq/Sack filtering
- */
- if ((tp->period <= 2000) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- OUTOFFB (nc_stest2, EXT);
-
- /*
- ** Bells and whistles ;-)
- */
- if (tp->period < 250) scsi = "FAST-80";
- else if (tp->period < 500) scsi = "FAST-40";
- else if (tp->period < 1000) scsi = "FAST-20";
- else if (tp->period < 2000) scsi = "FAST-10";
- else scsi = "FAST-5";
-
- printk ("%s %sSCSI %d.%d MB/s (%d.%d ns, offset %d)\n", scsi,
- tp->widedone > 1 ? "WIDE " : "",
- mb10 / 10, mb10 % 10, tp->period / 10, tp->period % 10,
- offset);
- } else
- printk ("%sasynchronous.\n", tp->widedone > 1 ? "wide " : "");
-next:
- /*
- ** set actual value and sync_status
- ** patch ALL ccbs of this target.
- */
- ncr_set_sync_wide_status(np, target);
-}
-
-
-/*==========================================================
-**
-** Switch wide mode for current job and it's target
-** SCSI specs say: a SCSI device that accepts a WDTR
-** message shall reset the synchronous agreement to
-** asynchronous mode.
-**
-**==========================================================
-*/
-
-static void ncr_setwide (ncb_p np, ccb_p cp, u_char wide, u_char ack)
-{
- u_short target = INB (nc_sdid) & 0x0f;
- tcb_p tp;
- u_char scntl3;
- u_char sxfer;
-
- assert (cp);
- if (!cp) return;
-
- assert (target == (cp->target & 0xf));
-
- tp = &np->target[target];
- tp->widedone = wide+1;
- scntl3 = (tp->wval & (~EWS)) | (wide ? EWS : 0);
-
- sxfer = ack ? 0 : tp->sval;
-
- /*
- ** Stop there if sync/wide parameters are unchanged
- */
- if (tp->sval == sxfer && tp->wval == scntl3) return;
- tp->sval = sxfer;
- tp->wval = scntl3;
-
- /*
- ** Bells and whistles ;-)
- */
- if (bootverbose >= 2) {
- PRINT_TARGET(np, target);
- if (scntl3 & EWS)
- printk ("WIDE SCSI (16 bit) enabled.\n");
- else
- printk ("WIDE SCSI disabled.\n");
- }
-
- /*
- ** set actual value and sync_status
- ** patch ALL ccbs of this target.
- */
- ncr_set_sync_wide_status(np, target);
-}
-
-
-/*==========================================================
-**
-** Switch sync/wide mode for current job and it's target
-** PPR negotiations only
-**
-**==========================================================
-*/
-
-static void ncr_setsyncwide (ncb_p np, ccb_p cp, u_char scntl3, u_char sxfer,
- u_char scntl4, u_char wide)
-{
- tcb_p tp;
- u_char target = INB (nc_sdid) & 0x0f;
- u_char idiv;
- u_char offset;
-
- assert (cp);
- if (!cp) return;
-
- assert (target == (cp->target & 0xf));
-
- tp = &np->target[target];
- tp->widedone = wide+1;
-
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- offset = sxfer & 0x3f; /* bits 5-0 */
- scntl3 = (scntl3 & 0xf0) | (wide ? EWS : 0);
- scntl4 = (scntl4 & 0x80);
- }
- else {
- offset = sxfer & 0x1f; /* bits 4-0 */
- if (!scntl3 || !offset)
- scntl3 = np->rv_scntl3;
-
- scntl3 = (scntl3 & 0xf0) | (wide ? EWS : 0) |
- (np->rv_scntl3 & 0x07);
- }
-
-
- /*
- ** Deduce the value of controller sync period from scntl3.
- ** period is in tenths of nano-seconds.
- */
-
- idiv = ((scntl3 >> 4) & 0x7);
- if ( offset && idiv) {
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- /* Note: If extra data hold clocks are used,
- * the formulas below must be modified.
- * When scntl4 == 0, ST mode.
- */
- if (scntl4 & 0x80)
- tp->period = (2*div_10M[idiv-1])/np->clock_khz;
- else
- tp->period = (4*div_10M[idiv-1])/np->clock_khz;
- }
- else
- tp->period = (((sxfer>>5)+4)*div_10M[idiv-1])/np->clock_khz;
- }
- else
- tp->period = 0xffff;
-
-
- /*
- ** Stop there if sync parameters are unchanged
- */
- if (tp->sval == sxfer && tp->wval == scntl3 && tp->uval == scntl4) return;
- tp->sval = sxfer;
- tp->wval = scntl3;
- tp->uval = scntl4;
-
- /*
- ** Bells and whistles ;-)
- ** Donnot announce negotiations due to auto-sense,
- ** unless user really want us to be verbose. :)
- */
- if ( bootverbose < 2 && (cp->host_flags & HF_AUTO_SENSE))
- goto next;
- PRINT_TARGET(np, target);
- if (offset) {
- unsigned f10 = 100000 << (tp->widedone ? tp->widedone -1 : 0);
- unsigned mb10 = (f10 + tp->period/2) / tp->period;
- char *scsi;
-
- /*
- ** Disable extended Sreq/Sack filtering
- */
- if ((tp->period <= 2000) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- OUTOFFB (nc_stest2, EXT);
-
- /*
- ** Bells and whistles ;-)
- */
- if (tp->period < 250) scsi = "FAST-80";
- else if (tp->period < 500) scsi = "FAST-40";
- else if (tp->period < 1000) scsi = "FAST-20";
- else if (tp->period < 2000) scsi = "FAST-10";
- else scsi = "FAST-5";
-
- printk ("%s %sSCSI %d.%d MB/s (%d.%d ns, offset %d)\n", scsi,
- tp->widedone > 1 ? "WIDE " : "",
- mb10 / 10, mb10 % 10, tp->period / 10, tp->period % 10,
- offset);
- } else
- printk ("%sasynchronous.\n", tp->widedone > 1 ? "wide " : "");
-next:
- /*
- ** set actual value and sync_status
- ** patch ALL ccbs of this target.
- */
- ncr_set_sync_wide_status(np, target);
-}
-
-
-
-
-/*==========================================================
-**
-** Switch tagged mode for a target.
-**
-**==========================================================
-*/
-
-static void ncr_setup_tags (ncb_p np, u_char tn, u_char ln)
-{
- tcb_p tp = &np->target[tn];
- lcb_p lp = ncr_lp(np, tp, ln);
- u_short reqtags, maxdepth;
-
- /*
- ** Just in case ...
- */
- if ((!tp) || (!lp))
- return;
-
- /*
- ** If SCSI device queue depth is not yet set, leave here.
- */
- if (!lp->scdev_depth)
- return;
-
- /*
- ** Donnot allow more tags than the SCSI driver can queue
- ** for this device.
- ** Donnot allow more tags than we can handle.
- */
- maxdepth = lp->scdev_depth;
- if (maxdepth > lp->maxnxs) maxdepth = lp->maxnxs;
- if (lp->maxtags > maxdepth) lp->maxtags = maxdepth;
- if (lp->numtags > maxdepth) lp->numtags = maxdepth;
-
- /*
- ** only devices conformant to ANSI Version >= 2
- ** only devices capable of tagged commands
- ** only if enabled by user ..
- */
- if ((lp->inq_byte7 & INQ7_QUEUE) && lp->numtags > 1) {
- reqtags = lp->numtags;
- } else {
- reqtags = 1;
- };
-
- /*
- ** Update max number of tags
- */
- lp->numtags = reqtags;
- if (lp->numtags > lp->maxtags)
- lp->maxtags = lp->numtags;
-
- /*
- ** If we want to switch tag mode, we must wait
- ** for no CCB to be active.
- */
- if (reqtags > 1 && lp->usetags) { /* Stay in tagged mode */
- if (lp->queuedepth == reqtags) /* Already announced */
- return;
- lp->queuedepth = reqtags;
- }
- else if (reqtags <= 1 && !lp->usetags) { /* Stay in untagged mode */
- lp->queuedepth = reqtags;
- return;
- }
- else { /* Want to switch tag mode */
- if (lp->busyccbs) /* If not yet safe, return */
- return;
- lp->queuedepth = reqtags;
- lp->usetags = reqtags > 1 ? 1 : 0;
- }
-
- /*
- ** Patch the lun mini-script, according to tag mode.
- */
- lp->resel_task = lp->usetags?
- cpu_to_scr(NCB_SCRIPT_PHYS(np, resel_tag)) :
- cpu_to_scr(NCB_SCRIPT_PHYS(np, resel_notag));
-
- /*
- ** Announce change to user.
- */
- if (bootverbose) {
- PRINT_LUN(np, tn, ln);
- if (lp->usetags)
- printk("tagged command queue depth set to %d\n", reqtags);
- else
- printk("tagged command queueing disabled\n");
- }
-}
-
-/*----------------------------------------------------
-**
-** handle user commands
-**
-**----------------------------------------------------
-*/
-
-#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
-
-static void ncr_usercmd (ncb_p np)
-{
- u_char t;
- tcb_p tp;
- int ln;
- u_long size;
-
- switch (np->user.cmd) {
- case 0: return;
-
- case UC_SETDEBUG:
-#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
- ncr_debug = np->user.data;
-#endif
- break;
-
- case UC_SETORDER:
- np->order = np->user.data;
- break;
-
- case UC_SETVERBOSE:
- np->verbose = np->user.data;
- break;
-
- default:
- /*
- ** We assume that other commands apply to targets.
- ** This should always be the case and avoid the below
- ** 4 lines to be repeated 5 times.
- */
- for (t = 0; t < MAX_TARGET; t++) {
- if (!((np->user.target >> t) & 1))
- continue;
- tp = &np->target[t];
-
- switch (np->user.cmd) {
-
- case UC_SETSYNC:
- tp->usrsync = np->user.data;
- ncr_negotiate (np, tp);
- break;
-
- case UC_SETWIDE:
- size = np->user.data;
- if (size > np->maxwide)
- size=np->maxwide;
- tp->usrwide = size;
- ncr_negotiate (np, tp);
- break;
-
- case UC_SETTAGS:
- tp->usrtags = np->user.data;
- for (ln = 0; ln < MAX_LUN; ln++) {
- lcb_p lp;
- lp = ncr_lp(np, tp, ln);
- if (!lp)
- continue;
- lp->numtags = np->user.data;
- lp->maxtags = lp->numtags;
- ncr_setup_tags (np, t, ln);
- }
- break;
-
- case UC_RESETDEV:
- tp->to_reset = 1;
- np->istat_sem = SEM;
- OUTB (nc_istat, SIGP|SEM);
- break;
-
- case UC_CLEARDEV:
- for (ln = 0; ln < MAX_LUN; ln++) {
- lcb_p lp;
- lp = ncr_lp(np, tp, ln);
- if (lp)
- lp->to_clear = 1;
- }
- np->istat_sem = SEM;
- OUTB (nc_istat, SIGP|SEM);
- break;
-
- case UC_SETFLAG:
- tp->usrflag = np->user.data;
- break;
- }
- }
- break;
- }
- np->user.cmd=0;
-}
-#endif
-
-/*==========================================================
-**
-**
-** ncr timeout handler.
-**
-**
-**==========================================================
-**
-** Misused to keep the driver running when
-** interrupts are not configured correctly.
-**
-**----------------------------------------------------------
-*/
-
-static void ncr_timeout (ncb_p np)
-{
- u_long thistime = ktime_get(0);
-
- /*
- ** If release process in progress, let's go
- ** Set the release stage from 1 to 2 to synchronize
- ** with the release process.
- */
-
- if (np->release_stage) {
- if (np->release_stage == 1) np->release_stage = 2;
- return;
- }
-
-#ifdef SCSI_NCR_PCIQ_BROKEN_INTR
- np->timer.expires = ktime_get((HZ+9)/10);
-#else
- np->timer.expires = ktime_get(SCSI_NCR_TIMER_INTERVAL);
-#endif
- add_timer(&np->timer);
-
- /*
- ** If we are resetting the ncr, wait for settle_time before
- ** clearing it. Then command processing will be resumed.
- */
- if (np->settle_time) {
- if (np->settle_time <= thistime) {
- if (bootverbose > 1)
- printk("%s: command processing resumed\n", ncr_name(np));
- np->settle_time = 0;
- requeue_waiting_list(np);
- }
- return;
- }
-
- /*
- ** Nothing to do for now, but that may come.
- */
- if (np->lasttime + 4*HZ < thistime) {
- np->lasttime = thistime;
- }
-
-#ifdef SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
- /*
- ** Some way-broken PCI bridges may lead to
- ** completions being lost when the clearing
- ** of the INTFLY flag by the CPU occurs
- ** concurrently with the chip raising this flag.
- ** If this ever happen, lost completions will
- ** be reaped here.
- */
- ncr_wakeup_done(np);
-#endif
-
-#ifdef SCSI_NCR_PCIQ_BROKEN_INTR
- if (INB(nc_istat) & (INTF|SIP|DIP)) {
-
- /*
- ** Process pending interrupts.
- */
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("{");
- ncr_exception (np);
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("}");
- }
-#endif /* SCSI_NCR_PCIQ_BROKEN_INTR */
-}
-
-/*==========================================================
-**
-** log message for real hard errors
-**
-** "ncr0 targ 0?: ERROR (ds:si) (so-si-sd) (sxfer/scntl3) @ name (dsp:dbc)."
-** " reg: r0 r1 r2 r3 r4 r5 r6 ..... rf."
-**
-** exception register:
-** ds: dstat
-** si: sist
-**
-** SCSI bus lines:
-** so: control lines as driver by NCR.
-** si: control lines as seen by NCR.
-** sd: scsi data lines as seen by NCR.
-**
-** wide/fastmode:
-** sxfer: (see the manual)
-** scntl3: (see the manual)
-**
-** current script command:
-** dsp: script address (relative to start of script).
-** dbc: first word of script command.
-**
-** First 24 register of the chip:
-** r0..rf
-**
-**==========================================================
-*/
-
-static void ncr_log_hard_error(ncb_p np, u_short sist, u_char dstat)
-{
- u_int32 dsp;
- int script_ofs;
- int script_size;
- char *script_name;
- u_char *script_base;
- int i;
-
- dsp = INL (nc_dsp);
-
- if (dsp > np->p_script && dsp <= np->p_script + sizeof(struct script)) {
- script_ofs = dsp - np->p_script;
- script_size = sizeof(struct script);
- script_base = (u_char *) np->script0;
- script_name = "script";
- }
- else if (np->p_scripth < dsp &&
- dsp <= np->p_scripth + sizeof(struct scripth)) {
- script_ofs = dsp - np->p_scripth;
- script_size = sizeof(struct scripth);
- script_base = (u_char *) np->scripth0;
- script_name = "scripth";
- } else {
- script_ofs = dsp;
- script_size = 0;
- script_base = 0;
- script_name = "mem";
- }
-
- printk ("%s:%d: ERROR (%x:%x) (%x-%x-%x) (%x/%x) @ (%s %x:%08x).\n",
- ncr_name (np), (unsigned)INB (nc_sdid)&0x0f, dstat, sist,
- (unsigned)INB (nc_socl), (unsigned)INB (nc_sbcl), (unsigned)INB (nc_sbdl),
- (unsigned)INB (nc_sxfer),(unsigned)INB (nc_scntl3), script_name, script_ofs,
- (unsigned)INL (nc_dbc));
-
- if (((script_ofs & 3) == 0) &&
- (unsigned)script_ofs < script_size) {
- printk ("%s: script cmd = %08x\n", ncr_name(np),
- scr_to_cpu((int) *(ncrcmd *)(script_base + script_ofs)));
- }
-
- printk ("%s: regdump:", ncr_name(np));
- for (i=0; i<24;i++)
- printk (" %02x", (unsigned)INB_OFF(i));
- printk (".\n");
-}
-
-/*============================================================
-**
-** ncr chip exception handler.
-**
-**============================================================
-**
-** In normal situations, interrupt conditions occur one at
-** a time. But when something bad happens on the SCSI BUS,
-** the chip may raise several interrupt flags before
-** stopping and interrupting the CPU. The additionnal
-** interrupt flags are stacked in some extra registers
-** after the SIP and/or DIP flag has been raised in the
-** ISTAT. After the CPU has read the interrupt condition
-** flag from SIST or DSTAT, the chip unstacks the other
-** interrupt flags and sets the corresponding bits in
-** SIST or DSTAT. Since the chip starts stacking once the
-** SIP or DIP flag is set, there is a small window of time
-** where the stacking does not occur.
-**
-** Typically, multiple interrupt conditions may happen in
-** the following situations:
-**
-** - SCSI parity error + Phase mismatch (PAR|MA)
-** When an parity error is detected in input phase
-** and the device switches to msg-in phase inside a
-** block MOV.
-** - SCSI parity error + Unexpected disconnect (PAR|UDC)
-** When a stupid device does not want to handle the
-** recovery of an SCSI parity error.
-** - Some combinations of STO, PAR, UDC, ...
-** When using non compliant SCSI stuff, when user is
-** doing non compliant hot tampering on the BUS, when
-** something really bad happens to a device, etc ...
-**
-** The heuristic suggested by SYMBIOS to handle
-** multiple interrupts is to try unstacking all
-** interrupts conditions and to handle them on some
-** priority based on error severity.
-** This will work when the unstacking has been
-** successful, but we cannot be 100 % sure of that,
-** since the CPU may have been faster to unstack than
-** the chip is able to stack. Hmmm ... But it seems that
-** such a situation is very unlikely to happen.
-**
-** If this happen, for example STO catched by the CPU
-** then UDC happenning before the CPU have restarted
-** the SCRIPTS, the driver may wrongly complete the
-** same command on UDC, since the SCRIPTS didn't restart
-** and the DSA still points to the same command.
-** We avoid this situation by setting the DSA to an
-** invalid value when the CCB is completed and before
-** restarting the SCRIPTS.
-**
-** Another issue is that we need some section of our
-** recovery procedures to be somehow uninterruptible and
-** that the SCRIPTS processor does not provides such a
-** feature. For this reason, we handle recovery preferently
-** from the C code and check against some SCRIPTS
-** critical sections from the C code.
-**
-** Hopefully, the interrupt handling of the driver is now
-** able to resist to weird BUS error conditions, but donnot
-** ask me for any guarantee that it will never fail. :-)
-** Use at your own decision and risk.
-**
-**============================================================
-*/
-
-void ncr_exception (ncb_p np)
-{
- u_char istat, istatc;
- u_char dstat;
- u_short sist;
- int i;
-
- /*
- ** interrupt on the fly ?
- **
- ** A `dummy read' is needed to ensure that the
- ** clear of the INTF flag reaches the device
- ** before the scanning of the DONE queue.
- */
- istat = INB (nc_istat);
- if (istat & INTF) {
- OUTB (nc_istat, (istat & SIGP) | INTF | np->istat_sem);
- istat = INB (nc_istat); /* DUMMY READ */
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("F ");
- (void)ncr_wakeup_done (np);
- };
-
- if (!(istat & (SIP|DIP)))
- return;
-
-#if 0 /* We should never get this one */
- if (istat & CABRT)
- OUTB (nc_istat, CABRT);
-#endif
-
- /*
- ** Steinbach's Guideline for Systems Programming:
- ** Never test for an error condition you don't know how to handle.
- */
-
- /*========================================================
- ** PAR and MA interrupts may occur at the same time,
- ** and we need to know of both in order to handle
- ** this situation properly. We try to unstack SCSI
- ** interrupts for that reason. BTW, I dislike a LOT
- ** such a loop inside the interrupt routine.
- ** Even if DMA interrupt stacking is very unlikely to
- ** happen, we also try unstacking these ones, since
- ** this has no performance impact.
- **=========================================================
- */
- sist = 0;
- dstat = 0;
- istatc = istat;
- do {
- if (istatc & SIP)
- sist |= INW (nc_sist);
- if (istatc & DIP)
- dstat |= INB (nc_dstat);
- istatc = INB (nc_istat);
- istat |= istatc;
- } while (istatc & (SIP|DIP));
-
- if (DEBUG_FLAGS & DEBUG_TINY)
- printk ("<%d|%x:%x|%x:%x>",
- (int)INB(nc_scr0),
- dstat,sist,
- (unsigned)INL(nc_dsp),
- (unsigned)INL(nc_dbc));
-
- /*
- ** On paper, a memory barrier may be needed here.
- ** And since we are paranoid ... :)
- */
- MEMORY_BARRIER();
-
- /*========================================================
- ** First, interrupts we want to service cleanly.
- **
- ** Phase mismatch (MA) is the most frequent interrupt
- ** for chip earlier than the 896 and so we have to service
- ** it as quickly as possible.
- ** A SCSI parity error (PAR) may be combined with a phase
- ** mismatch condition (MA).
- ** Programmed interrupts (SIR) are used to call the C code
- ** from SCRIPTS.
- ** The single step interrupt (SSI) is not used in this
- ** driver.
- **=========================================================
- */
-
- if (!(sist & (STO|GEN|HTH|SGE|UDC|SBMC|RST)) &&
- !(dstat & (MDPE|BF|ABRT|IID))) {
- if (sist & PAR) ncr_int_par (np, sist);
- else if (sist & MA) ncr_int_ma (np);
- else if (dstat & SIR) ncr_int_sir (np);
- else if (dstat & SSI) OUTONB_STD ();
- else goto unknown_int;
- return;
- };
-
- /*========================================================
- ** Now, interrupts that donnot happen in normal
- ** situations and that we may need to recover from.
- **
- ** On SCSI RESET (RST), we reset everything.
- ** On SCSI BUS MODE CHANGE (SBMC), we complete all
- ** active CCBs with RESET status, prepare all devices
- ** for negotiating again and restart the SCRIPTS.
- ** On STO and UDC, we complete the CCB with the corres-
- ** ponding status and restart the SCRIPTS.
- **=========================================================
- */
-
- if (sist & RST) {
- ncr_init (np, 1, bootverbose ? "scsi reset" : NULL, HS_RESET);
- return;
- };
-
- OUTB (nc_ctest3, np->rv_ctest3 | CLF); /* clear dma fifo */
- OUTB (nc_stest3, TE|CSF); /* clear scsi fifo */
-
- if (!(sist & (GEN|HTH|SGE)) &&
- !(dstat & (MDPE|BF|ABRT|IID))) {
- if (sist & SBMC) ncr_int_sbmc (np);
- else if (sist & STO) ncr_int_sto (np);
- else if (sist & UDC) ncr_int_udc (np);
- else goto unknown_int;
- return;
- };
-
- /*=========================================================
- ** Now, interrupts we are not able to recover cleanly.
- **
- ** Do the register dump.
- ** Log message for hard errors.
- ** Reset everything.
- **=========================================================
- */
- if (ktime_exp(np->regtime)) {
- np->regtime = ktime_get(10*HZ);
- for (i = 0; i<sizeof(np->regdump); i++)
- ((char*)&np->regdump)[i] = INB_OFF(i);
- np->regdump.nc_dstat = dstat;
- np->regdump.nc_sist = sist;
- };
-
- ncr_log_hard_error(np, sist, dstat);
-
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)) {
- u_char ctest4_o, ctest4_m;
- u_char shadow;
-
- /*
- * Get shadow register data
- * Write 1 to ctest4
- */
- ctest4_o = INB(nc_ctest4);
-
- OUTB(nc_ctest4, ctest4_o | 0x10);
-
- ctest4_m = INB(nc_ctest4);
- shadow = INW_OFF(0x42);
-
- OUTB(nc_ctest4, ctest4_o);
-
- printk("%s: ctest4/sist original 0x%x/0x%X mod: 0x%X/0x%x\n",
- ncr_name(np), ctest4_o, sist, ctest4_m, shadow);
- }
-
- if ((sist & (GEN|HTH|SGE)) ||
- (dstat & (MDPE|BF|ABRT|IID))) {
- ncr_start_reset(np);
- return;
- };
-
-unknown_int:
- /*=========================================================
- ** We just miss the cause of the interrupt. :(
- ** Print a message. The timeout will do the real work.
- **=========================================================
- */
- printk( "%s: unknown interrupt(s) ignored, "
- "ISTAT=0x%x DSTAT=0x%x SIST=0x%x\n",
- ncr_name(np), istat, dstat, sist);
-}
-
-
-/*==========================================================
-**
-** generic recovery from scsi interrupt
-**
-**==========================================================
-**
-** The doc says that when the chip gets an SCSI interrupt,
-** it tries to stop in an orderly fashion, by completing
-** an instruction fetch that had started or by flushing
-** the DMA fifo for a write to memory that was executing.
-** Such a fashion is not enough to know if the instruction
-** that was just before the current DSP value has been
-** executed or not.
-**
-** There are 3 small SCRIPTS sections that deal with the
-** start queue and the done queue that may break any
-** assomption from the C code if we are interrupted
-** inside, so we reset if it happens. Btw, since these
-** SCRIPTS sections are executed while the SCRIPTS hasn't
-** started SCSI operations, it is very unlikely to happen.
-**
-** All the driver data structures are supposed to be
-** allocated from the same 4 GB memory window, so there
-** is a 1 to 1 relationship between DSA and driver data
-** structures. Since we are careful :) to invalidate the
-** DSA when we complete a command or when the SCRIPTS
-** pushes a DSA into a queue, we can trust it when it
-** points to a CCB.
-**
-**----------------------------------------------------------
-*/
-static void ncr_recover_scsi_int (ncb_p np, u_char hsts)
-{
- u_int32 dsp = INL (nc_dsp);
- u_int32 dsa = INL (nc_dsa);
- ccb_p cp = ncr_ccb_from_dsa(np, dsa);
-
- /*
- ** If we haven't been interrupted inside the SCRIPTS
- ** critical pathes, we can safely restart the SCRIPTS
- ** and trust the DSA value if it matches a CCB.
- */
- if ((!(dsp > NCB_SCRIPT_PHYS (np, getjob_begin) &&
- dsp < NCB_SCRIPT_PHYS (np, getjob_end) + 1)) &&
- (!(dsp > NCB_SCRIPT_PHYS (np, ungetjob) &&
- dsp < NCB_SCRIPT_PHYS (np, reselect) + 1)) &&
- (!(dsp > NCB_SCRIPTH_PHYS (np, sel_for_abort) &&
- dsp < NCB_SCRIPTH_PHYS (np, sel_for_abort_1) + 1)) &&
- (!(dsp > NCB_SCRIPT_PHYS (np, done) &&
- dsp < NCB_SCRIPT_PHYS (np, done_end) + 1))) {
- if (cp) {
- cp->host_status = hsts;
- ncr_complete (np, cp);
- }
- OUTL (nc_dsa, DSA_INVALID);
- OUTB (nc_ctest3, np->rv_ctest3 | CLF); /* clear dma fifo */
- OUTB (nc_stest3, TE|CSF); /* clear scsi fifo */
- OUTL_DSP (NCB_SCRIPT_PHYS (np, start));
- }
- else
- goto reset_all;
-
- return;
-
-reset_all:
- ncr_start_reset(np);
-}
-
-/*==========================================================
-**
-** ncr chip exception handler for selection timeout
-**
-**==========================================================
-**
-** There seems to be a bug in the 53c810.
-** Although a STO-Interrupt is pending,
-** it continues executing script commands.
-** But it will fail and interrupt (IID) on
-** the next instruction where it's looking
-** for a valid phase.
-**
-**----------------------------------------------------------
-*/
-
-void ncr_int_sto (ncb_p np)
-{
- u_int32 dsp = INL (nc_dsp);
-
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("T");
-
- if (dsp == NCB_SCRIPT_PHYS (np, wf_sel_done) + 8 ||
- !(driver_setup.recovery & 1))
- ncr_recover_scsi_int(np, HS_SEL_TIMEOUT);
- else
- ncr_start_reset(np);
-}
-
-/*==========================================================
-**
-** ncr chip exception handler for unexpected disconnect
-**
-**==========================================================
-**
-**----------------------------------------------------------
-*/
-void ncr_int_udc (ncb_p np)
-{
- u_int32 dsa = INL (nc_dsa);
- ccb_p cp = ncr_ccb_from_dsa(np, dsa);
-
- /*
- * Fix Up. Some disks respond to a PPR negotiation with
- * a bus free instead of a message reject.
- * Disable ppr negotiation if this is first time
- * tried ppr negotiation.
- */
- if (cp) {
- tcb_p tp = &np->target[cp->target];
- if (tp->ppr_negotiation == 1)
- tp->ppr_negotiation = 0;
- }
-
- printk ("%s: unexpected disconnect\n", ncr_name(np));
- ncr_recover_scsi_int(np, HS_UNEXPECTED);
-}
-
-/*==========================================================
-**
-** ncr chip exception handler for SCSI bus mode change
-**
-**==========================================================
-**
-** spi2-r12 11.2.3 says a transceiver mode change must
-** generate a reset event and a device that detects a reset
-** event shall initiate a hard reset. It says also that a
-** device that detects a mode change shall set data transfer
-** mode to eight bit asynchronous, etc...
-** So, just resetting should be enough.
-**
-**
-**----------------------------------------------------------
-*/
-
-static void ncr_int_sbmc (ncb_p np)
-{
- u_char scsi_mode = INB (nc_stest4) & SMODE;
-
- printk("%s: SCSI bus mode change from %x to %x.\n",
- ncr_name(np), np->scsi_mode, scsi_mode);
-
- np->scsi_mode = scsi_mode;
-
-
- /*
- ** Suspend command processing for 1 second and
- ** reinitialize all except the chip.
- */
- np->settle_time = ktime_get(1*HZ);
- ncr_init (np, 0, bootverbose ? "scsi mode change" : NULL, HS_RESET);
-}
-
-/*==========================================================
-**
-** ncr chip exception handler for SCSI parity error.
-**
-**==========================================================
-**
-** When the chip detects a SCSI parity error and is
-** currently executing a (CH)MOV instruction, it does
-** not interrupt immediately, but tries to finish the
-** transfer of the current scatter entry before
-** interrupting. The following situations may occur:
-**
-** - The complete scatter entry has been transferred
-** without the device having changed phase.
-** The chip will then interrupt with the DSP pointing
-** to the instruction that follows the MOV.
-**
-** - A phase mismatch occurs before the MOV finished
-** and phase errors are to be handled by the C code.
-** The chip will then interrupt with both PAR and MA
-** conditions set.
-**
-** - A phase mismatch occurs before the MOV finished and
-** phase errors are to be handled by SCRIPTS (895A or 896).
-** The chip will load the DSP with the phase mismatch
-** JUMP address and interrupt the host processor.
-**
-**----------------------------------------------------------
-*/
-
-static void ncr_int_par (ncb_p np, u_short sist)
-{
- u_char hsts = INB (HS_PRT);
- u_int32 dsp = INL (nc_dsp);
- u_int32 dbc = INL (nc_dbc);
- u_int32 dsa = INL (nc_dsa);
- u_char sbcl = INB (nc_sbcl);
- u_char cmd = dbc >> 24;
- int phase = cmd & 7;
- ccb_p cp = ncr_ccb_from_dsa(np, dsa);
-
- printk("%s: SCSI parity error detected: SCR1=%d DBC=%x SBCL=%x\n",
- ncr_name(np), hsts, dbc, sbcl);
-
- /*
- ** Check that the chip is connected to the SCSI BUS.
- */
- if (!(INB (nc_scntl1) & ISCON)) {
- if (!(driver_setup.recovery & 1)) {
- ncr_recover_scsi_int(np, HS_FAIL);
- return;
- }
- goto reset_all;
- }
-
- /*
- ** If the nexus is not clearly identified, reset the bus.
- ** We will try to do better later.
- */
- if (!cp)
- goto reset_all;
-
- /*
- ** Check instruction was a MOV, direction was INPUT and
- ** ATN is asserted.
- */
- if ((cmd & 0xc0) || !(phase & 1) || !(sbcl & 0x8))
- goto reset_all;
-
- /*
- ** Keep track of the parity error.
- */
- OUTONB (HF_PRT, HF_EXT_ERR);
- cp->xerr_status |= XE_PARITY_ERR;
-
- /*
- ** Prepare the message to send to the device.
- */
- np->msgout[0] = (phase == 7) ? M_PARITY : M_ID_ERROR;
-
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- /*
- ** Save error message. For integrity check use only.
- */
- if (np->check_integrity)
- np->check_integ_par = np->msgout[0];
-#endif
-
- /*
- ** If the old phase was DATA IN or DT DATA IN phase,
- ** we have to deal with the 3 situations described above.
- ** For other input phases (MSG IN and STATUS), the device
- ** must resend the whole thing that failed parity checking
- ** or signal error. So, jumping to dispatcher should be OK.
- */
- if ((phase == 1) || (phase == 5)) {
- /* Phase mismatch handled by SCRIPTS */
- if (dsp == NCB_SCRIPTH_PHYS (np, pm_handle))
- OUTL_DSP (dsp);
- /* Phase mismatch handled by the C code */
- else if (sist & MA)
- ncr_int_ma (np);
- /* No phase mismatch occurred */
- else {
- OUTL (nc_temp, dsp);
- OUTL_DSP (NCB_SCRIPT_PHYS (np, dispatch));
- }
- }
- else
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
- return;
-
-reset_all:
- ncr_start_reset(np);
- return;
-}
-
-/*==========================================================
-**
-**
-** ncr chip exception handler for phase errors.
-**
-**
-**==========================================================
-**
-** We have to construct a new transfer descriptor,
-** to transfer the rest of the current block.
-**
-**----------------------------------------------------------
-*/
-
-static void ncr_int_ma (ncb_p np)
-{
- u_int32 dbc;
- u_int32 rest;
- u_int32 dsp;
- u_int32 dsa;
- u_int32 nxtdsp;
- u_int32 *vdsp;
- u_int32 oadr, olen;
- u_int32 *tblp;
- u_int32 newcmd;
- u_int delta;
- u_char cmd;
- u_char hflags, hflags0;
- struct pm_ctx *pm;
- ccb_p cp;
-
- dsp = INL (nc_dsp);
- dbc = INL (nc_dbc);
- dsa = INL (nc_dsa);
-
- cmd = dbc >> 24;
- rest = dbc & 0xffffff;
- delta = 0;
-
- /*
- ** locate matching cp.
- */
- cp = ncr_ccb_from_dsa(np, dsa);
-
- if (DEBUG_FLAGS & DEBUG_PHASE)
- printk("CCB = %2x %2x %2x %2x %2x %2x\n",
- cp->cmd->cmnd[0], cp->cmd->cmnd[1], cp->cmd->cmnd[2],
- cp->cmd->cmnd[3], cp->cmd->cmnd[4], cp->cmd->cmnd[5]);
-
- /*
- ** Donnot take into account dma fifo and various buffers in
- ** INPUT phase since the chip flushes everything before
- ** raising the MA interrupt for interrupted INPUT phases.
- ** For DATA IN phase, we will check for the SWIDE later.
- */
- if ((cmd & 7) != 1 && (cmd & 7) != 5) {
- u_int32 dfifo;
- u_char ss0, ss2;
-
- /*
- ** If C1010, DFBC contains number of bytes in DMA fifo.
- ** else read DFIFO, CTEST[4-6] using 1 PCI bus ownership.
- */
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66))
- delta = INL(nc_dfbc) & 0xffff;
- else {
- dfifo = INL(nc_dfifo);
-
- /*
- ** Calculate remaining bytes in DMA fifo.
- ** C1010 - always large fifo, value in dfbc
- ** Otherwise, (CTEST5 = dfifo >> 16)
- */
- if (dfifo & (DFS << 16))
- delta = ((((dfifo >> 8) & 0x300) |
- (dfifo & 0xff)) - rest) & 0x3ff;
- else
- delta = ((dfifo & 0xff) - rest) & 0x7f;
-
- /*
- ** The data in the dma fifo has not been
- ** transferred to the target -> add the amount
- ** to the rest and clear the data.
- ** Check the sstat2 register in case of wide
- ** transfer.
- */
-
- }
-
- rest += delta;
- ss0 = INB (nc_sstat0);
- if (ss0 & OLF) rest++;
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66) && (ss0 & ORF))
- rest++;
- if (cp && (cp->phys.select.sel_scntl3 & EWS)) {
- ss2 = INB (nc_sstat2);
- if (ss2 & OLF1) rest++;
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66) && (ss2 & ORF))
- rest++;
- };
-
- /*
- ** Clear fifos.
- */
- OUTB (nc_ctest3, np->rv_ctest3 | CLF); /* dma fifo */
- OUTB (nc_stest3, TE|CSF); /* scsi fifo */
- }
-
- /*
- ** log the information
- */
-
- if (DEBUG_FLAGS & (DEBUG_TINY|DEBUG_PHASE))
- printk ("P%x%x RL=%d D=%d ", cmd&7, INB(nc_sbcl)&7,
- (unsigned) rest, (unsigned) delta);
-
- /*
- ** try to find the interrupted script command,
- ** and the address at which to continue.
- */
- vdsp = 0;
- nxtdsp = 0;
- if (dsp > np->p_script &&
- dsp <= np->p_script + sizeof(struct script)) {
- vdsp = (u_int32 *)((char*)np->script0 + (dsp-np->p_script-8));
- nxtdsp = dsp;
- }
- else if (dsp > np->p_scripth &&
- dsp <= np->p_scripth + sizeof(struct scripth)) {
- vdsp = (u_int32 *)((char*)np->scripth0 + (dsp-np->p_scripth-8));
- nxtdsp = dsp;
- }
-
- /*
- ** log the information
- */
- if (DEBUG_FLAGS & DEBUG_PHASE) {
- printk ("\nCP=%p DSP=%x NXT=%x VDSP=%p CMD=%x ",
- cp, (unsigned)dsp, (unsigned)nxtdsp, vdsp, cmd);
- };
-
- if (!vdsp) {
- printk ("%s: interrupted SCRIPT address not found.\n",
- ncr_name (np));
- goto reset_all;
- }
-
- if (!cp) {
- printk ("%s: SCSI phase error fixup: CCB already dequeued.\n",
- ncr_name (np));
- goto reset_all;
- }
-
- /*
- ** get old startaddress and old length.
- */
-
- oadr = scr_to_cpu(vdsp[1]);
-
- if (cmd & 0x10) { /* Table indirect */
- tblp = (u_int32 *) ((char*) &cp->phys + oadr);
- olen = scr_to_cpu(tblp[0]);
- oadr = scr_to_cpu(tblp[1]);
- } else {
- tblp = (u_int32 *) 0;
- olen = scr_to_cpu(vdsp[0]) & 0xffffff;
- };
-
- if (DEBUG_FLAGS & DEBUG_PHASE) {
- printk ("OCMD=%x\nTBLP=%p OLEN=%x OADR=%x\n",
- (unsigned) (scr_to_cpu(vdsp[0]) >> 24),
- tblp,
- (unsigned) olen,
- (unsigned) oadr);
- };
-
- /*
- ** check cmd against assumed interrupted script command.
- ** If dt data phase, the MOVE instruction hasn't bit 4 of
- ** the phase.
- */
-
- if (((cmd & 2) ? cmd : (cmd & ~4)) != (scr_to_cpu(vdsp[0]) >> 24)) {
- PRINT_ADDR(cp->cmd);
- printk ("internal error: cmd=%02x != %02x=(vdsp[0] >> 24)\n",
- (unsigned)cmd, (unsigned)scr_to_cpu(vdsp[0]) >> 24);
-
- goto reset_all;
- };
-
- /*
- ** if old phase not dataphase, leave here.
- ** C/D line is low if data.
- */
-
- if (cmd & 0x02) {
- PRINT_ADDR(cp->cmd);
- printk ("phase change %x-%x %d@%08x resid=%d.\n",
- cmd&7, INB(nc_sbcl)&7, (unsigned)olen,
- (unsigned)oadr, (unsigned)rest);
- goto unexpected_phase;
- };
-
- /*
- ** Choose the correct PM save area.
- **
- ** Look at the PM_SAVE SCRIPT if you want to understand
- ** this stuff. The equivalent code is implemented in
- ** SCRIPTS for the 895A and 896 that are able to handle
- ** PM from the SCRIPTS processor.
- */
-
- hflags0 = INB (HF_PRT);
- hflags = hflags0;
-
- if (hflags & (HF_IN_PM0 | HF_IN_PM1 | HF_DP_SAVED)) {
- if (hflags & HF_IN_PM0)
- nxtdsp = scr_to_cpu(cp->phys.pm0.ret);
- else if (hflags & HF_IN_PM1)
- nxtdsp = scr_to_cpu(cp->phys.pm1.ret);
-
- if (hflags & HF_DP_SAVED)
- hflags ^= HF_ACT_PM;
- }
-
- if (!(hflags & HF_ACT_PM)) {
- pm = &cp->phys.pm0;
- newcmd = NCB_SCRIPT_PHYS(np, pm0_data);
- }
- else {
- pm = &cp->phys.pm1;
- newcmd = NCB_SCRIPT_PHYS(np, pm1_data);
- }
-
- hflags &= ~(HF_IN_PM0 | HF_IN_PM1 | HF_DP_SAVED);
- if (hflags != hflags0)
- OUTB (HF_PRT, hflags);
-
- /*
- ** fillin the phase mismatch context
- */
-
- pm->sg.addr = cpu_to_scr(oadr + olen - rest);
- pm->sg.size = cpu_to_scr(rest);
- pm->ret = cpu_to_scr(nxtdsp);
-
- /*
- ** If we have a SWIDE,
- ** - prepare the address to write the SWIDE from SCRIPTS,
- ** - compute the SCRIPTS address to restart from,
- ** - move current data pointer context by one byte.
- */
- nxtdsp = NCB_SCRIPT_PHYS (np, dispatch);
- if ( ((cmd & 7) == 1 || (cmd & 7) == 5)
- && cp && (cp->phys.select.sel_scntl3 & EWS) &&
- (INB (nc_scntl2) & WSR)) {
- u32 tmp;
-
-#ifdef SYM_DEBUG_PM_WITH_WSR
- PRINT_ADDR(cp);
- printk ("MA interrupt with WSR set - "
- "pm->sg.addr=%x - pm->sg.size=%d\n",
- pm->sg.addr, pm->sg.size);
-#endif
- /*
- * Set up the table indirect for the MOVE
- * of the residual byte and adjust the data
- * pointer context.
- */
- tmp = scr_to_cpu(pm->sg.addr);
- cp->phys.wresid.addr = cpu_to_scr(tmp);
- pm->sg.addr = cpu_to_scr(tmp + 1);
- tmp = scr_to_cpu(pm->sg.size);
- cp->phys.wresid.size = cpu_to_scr((tmp&0xff000000) | 1);
- pm->sg.size = cpu_to_scr(tmp - 1);
-
- /*
- * If only the residual byte is to be moved,
- * no PM context is needed.
- */
- if ((tmp&0xffffff) == 1)
- newcmd = pm->ret;
-
- /*
- * Prepare the address of SCRIPTS that will
- * move the residual byte to memory.
- */
- nxtdsp = NCB_SCRIPTH_PHYS (np, wsr_ma_helper);
- }
-
- if (DEBUG_FLAGS & DEBUG_PHASE) {
- PRINT_ADDR(cp->cmd);
- printk ("PM %x %x %x / %x %x %x.\n",
- hflags0, hflags, newcmd,
- (unsigned)scr_to_cpu(pm->sg.addr),
- (unsigned)scr_to_cpu(pm->sg.size),
- (unsigned)scr_to_cpu(pm->ret));
- }
-
- /*
- ** Restart the SCRIPTS processor.
- */
-
- OUTL (nc_temp, newcmd);
- OUTL_DSP (nxtdsp);
- return;
-
- /*
- ** Unexpected phase changes that occurs when the current phase
- ** is not a DATA IN or DATA OUT phase are due to error conditions.
- ** Such event may only happen when the SCRIPTS is using a
- ** multibyte SCSI MOVE.
- **
- ** Phase change Some possible cause
- **
- ** COMMAND --> MSG IN SCSI parity error detected by target.
- ** COMMAND --> STATUS Bad command or refused by target.
- ** MSG OUT --> MSG IN Message rejected by target.
- ** MSG OUT --> COMMAND Bogus target that discards extended
- ** negotiation messages.
- **
- ** The code below does not care of the new phase and so
- ** trusts the target. Why to annoy it ?
- ** If the interrupted phase is COMMAND phase, we restart at
- ** dispatcher.
- ** If a target does not get all the messages after selection,
- ** the code assumes blindly that the target discards extended
- ** messages and clears the negotiation status.
- ** If the target does not want all our response to negotiation,
- ** we force a SIR_NEGO_PROTO interrupt (it is a hack that avoids
- ** bloat for such a should_not_happen situation).
- ** In all other situation, we reset the BUS.
- ** Are these assumptions reasonnable ? (Wait and see ...)
- */
-unexpected_phase:
- dsp -= 8;
- nxtdsp = 0;
-
- switch (cmd & 7) {
- case 2: /* COMMAND phase */
- nxtdsp = NCB_SCRIPT_PHYS (np, dispatch);
- break;
-#if 0
- case 3: /* STATUS phase */
- nxtdsp = NCB_SCRIPT_PHYS (np, dispatch);
- break;
-#endif
- case 6: /* MSG OUT phase */
- /*
- ** If the device may want to use untagged when we want
- ** tagged, we prepare an IDENTIFY without disc. granted,
- ** since we will not be able to handle reselect.
- ** Otherwise, we just don't care.
- */
- if (dsp == NCB_SCRIPT_PHYS (np, send_ident)) {
- if (cp->tag != NO_TAG && olen - rest <= 3) {
- cp->host_status = HS_BUSY;
- np->msgout[0] = M_IDENTIFY | cp->lun;
- nxtdsp = NCB_SCRIPTH_PHYS (np, ident_break_atn);
- }
- else
- nxtdsp = NCB_SCRIPTH_PHYS (np, ident_break);
- }
- else if (dsp == NCB_SCRIPTH_PHYS (np, send_wdtr) ||
- dsp == NCB_SCRIPTH_PHYS (np, send_sdtr) ||
- dsp == NCB_SCRIPTH_PHYS (np, send_ppr)) {
- nxtdsp = NCB_SCRIPTH_PHYS (np, nego_bad_phase);
- }
- break;
-#if 0
- case 7: /* MSG IN phase */
- nxtdsp = NCB_SCRIPT_PHYS (np, clrack);
- break;
-#endif
- }
-
- if (nxtdsp) {
- OUTL_DSP (nxtdsp);
- return;
- }
-
-reset_all:
- ncr_start_reset(np);
-}
-
-/*==========================================================
-**
-** ncr chip handler for QUEUE FULL and CHECK CONDITION
-**
-**==========================================================
-**
-** On QUEUE FULL status, we set the actual tagged command
-** queue depth to the number of disconnected CCBs that is
-** hopefully a good value to avoid further QUEUE FULL.
-**
-** On CHECK CONDITION or COMMAND TERMINATED, we use the
-** CCB of the failed command for performing a REQUEST
-** SENSE SCSI command.
-**
-** We do not want to change the order commands will be
-** actually queued to the device after we received a
-** QUEUE FULL status. We also want to properly deal with
-** contingent allegiance condition. For these reasons,
-** we remove from the start queue all commands for this
-** LUN that haven't been yet queued to the device and
-** put them back in the correponding LUN queue, then
-** requeue the CCB that failed in front of the LUN queue.
-** I just hope this not to be performed too often. :)
-**
-** If we are using IMMEDIATE ARBITRATION, we clear the
-** IARB hint for every commands we encounter in order not
-** to be stuck with a won arbitration and no job to queue
-** to a device.
-**----------------------------------------------------------
-*/
-
-static void ncr_sir_to_redo(ncb_p np, int num, ccb_p cp)
-{
- Scsi_Cmnd *cmd = cp->cmd;
- tcb_p tp = &np->target[cp->target];
- lcb_p lp = ncr_lp(np, tp, cp->lun);
- ccb_p cp2;
- int busyccbs = 1;
- u_int32 startp;
- u_char s_status = INB (SS_PRT);
- int msglen;
- int i, j;
-
-
- /*
- ** If the LCB is not yet available, then only
- ** 1 IO is accepted, so we should have it.
- */
- if (!lp)
- goto next;
- /*
- ** Remove all CCBs queued to the chip for that LUN and put
- ** them back in the LUN CCB wait queue.
- */
- busyccbs = lp->queuedccbs;
- i = (INL (nc_scratcha) - np->p_squeue) / 4;
- j = i;
- while (i != np->squeueput) {
- cp2 = ncr_ccb_from_dsa(np, scr_to_cpu(np->squeue[i]));
- assert(cp2);
-#ifdef SCSI_NCR_IARB_SUPPORT
- /* IARB hints may not be relevant any more. Forget them. */
- cp2->host_flags &= ~HF_HINT_IARB;
-#endif
- if (cp2 && cp2->target == cp->target && cp2->lun == cp->lun) {
- xpt_remque(&cp2->link_ccbq);
- xpt_insque_head(&cp2->link_ccbq, &lp->wait_ccbq);
- --lp->queuedccbs;
- cp2->queued = 0;
- }
- else {
- if (i != j)
- np->squeue[j] = np->squeue[i];
- if ((j += 2) >= MAX_START*2) j = 0;
- }
- if ((i += 2) >= MAX_START*2) i = 0;
- }
- if (i != j) /* Copy back the idle task if needed */
- np->squeue[j] = np->squeue[i];
- np->squeueput = j; /* Update our current start queue pointer */
-
- /*
- ** Requeue the interrupted CCB in front of the
- ** LUN CCB wait queue to preserve ordering.
- */
- xpt_remque(&cp->link_ccbq);
- xpt_insque_head(&cp->link_ccbq, &lp->wait_ccbq);
- --lp->queuedccbs;
- cp->queued = 0;
-
-next:
-
-#ifdef SCSI_NCR_IARB_SUPPORT
- /* IARB hint may not be relevant any more. Forget it. */
- cp->host_flags &= ~HF_HINT_IARB;
- if (np->last_cp)
- np->last_cp = 0;
-#endif
-
- /*
- ** Now we can restart the SCRIPTS processor safely.
- */
- OUTL_DSP (NCB_SCRIPT_PHYS (np, start));
-
- switch(s_status) {
- default:
- case S_BUSY:
- ncr_complete(np, cp);
- break;
- case S_QUEUE_FULL:
- if (!lp || !lp->queuedccbs) {
- ncr_complete(np, cp);
- break;
- }
- if (bootverbose >= 1) {
- PRINT_ADDR(cmd);
- printk ("QUEUE FULL! %d busy, %d disconnected CCBs\n",
- busyccbs, lp->queuedccbs);
- }
- /*
- ** Decrease number of tags to the number of
- ** disconnected commands.
- */
- if (lp->queuedccbs < lp->numtags) {
- lp->numtags = lp->queuedccbs;
- lp->num_good = 0;
- ncr_setup_tags (np, cp->target, cp->lun);
- }
- /*
- ** Repair the offending CCB.
- */
- cp->phys.header.savep = cp->startp;
- cp->phys.header.lastp = cp->lastp0;
- cp->host_status = HS_BUSY;
- cp->scsi_status = S_ILLEGAL;
- cp->xerr_status = 0;
- cp->extra_bytes = 0;
- cp->host_flags &= (HF_PM_TO_C|HF_DATA_IN);
-
- break;
-
- case S_TERMINATED:
- case S_CHECK_COND:
- /*
- ** If we were requesting sense, give up.
- */
- if (cp->host_flags & HF_AUTO_SENSE) {
- ncr_complete(np, cp);
- break;
- }
-
- /*
- ** Save SCSI status and extended error.
- ** Compute the data residual now.
- */
- cp->sv_scsi_status = cp->scsi_status;
- cp->sv_xerr_status = cp->xerr_status;
- cp->resid = ncr_compute_residual(np, cp);
-
- /*
- ** Device returned CHECK CONDITION status.
- ** Prepare all needed data strutures for getting
- ** sense data.
- */
-
- /*
- ** identify message
- */
- cp->scsi_smsg2[0] = M_IDENTIFY | cp->lun;
- msglen = 1;
-
- /*
- ** If we are currently using anything different from
- ** async. 8 bit data transfers with that target,
- ** start a negotiation, since the device may want
- ** to report us a UNIT ATTENTION condition due to
- ** a cause we currently ignore, and we donnot want
- ** to be stuck with WIDE and/or SYNC data transfer.
- **
- ** cp->nego_status is filled by ncr_prepare_nego().
- **
- ** Do NOT negotiate if performing integrity check
- ** or if integrity check has completed, all check
- ** conditions will have been cleared.
- */
-
-#ifdef SCSI_NCR_INTEGRITY_CHECKING
- if (DEBUG_FLAGS & DEBUG_IC) {
- printk("%s: ncr_sir_to_redo: ic_done %2X, in_progress %2X\n",
- ncr_name(np), tp->ic_done, cp->cmd->ic_in_progress);
- }
-
- /*
- ** If parity error during integrity check,
- ** set the target width to narrow. Otherwise,
- ** do not negotiate on a request sense.
- */
- if ( np->check_integ_par && np->check_integrity
- && cp->cmd->ic_in_progress ) {
- cp->nego_status = 0;
- msglen +=
- ncr_ic_nego (np, cp, cmd ,&cp->scsi_smsg2[msglen]);
- }
-
- if (!np->check_integrity ||
- (np->check_integrity &&
- (!cp->cmd->ic_in_progress && !tp->ic_done)) ) {
- ncr_negotiate(np, tp);
- cp->nego_status = 0;
- {
- u_char sync_offset;
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66))
- sync_offset = tp->sval & 0x3f;
- else
- sync_offset = tp->sval & 0x1f;
-
- if ((tp->wval & EWS) || sync_offset)
- msglen +=
- ncr_prepare_nego (np, cp, &cp->scsi_smsg2[msglen]);
- }
-
- }
-#else
- ncr_negotiate(np, tp);
- cp->nego_status = 0;
- if ((tp->wval & EWS) || (tp->sval & 0x1f))
- msglen +=
- ncr_prepare_nego (np, cp, &cp->scsi_smsg2[msglen]);
-#endif /* SCSI_NCR_INTEGRITY_CHECKING */
-
- /*
- ** Message table indirect structure.
- */
- cp->phys.smsg.addr = cpu_to_scr(CCB_PHYS (cp, scsi_smsg2));
- cp->phys.smsg.size = cpu_to_scr(msglen);
-
- /*
- ** sense command
- */
- cp->phys.cmd.addr = cpu_to_scr(CCB_PHYS (cp, sensecmd));
- cp->phys.cmd.size = cpu_to_scr(6);
-
- /*
- ** patch requested size into sense command
- */
- cp->sensecmd[0] = 0x03;
- cp->sensecmd[1] = cp->lun << 5;
- cp->sensecmd[4] = sizeof(cp->sense_buf);
-
- /*
- ** sense data
- */
- bzero(cp->sense_buf, sizeof(cp->sense_buf));
- cp->phys.sense.addr = cpu_to_scr(CCB_PHYS(cp,sense_buf[0]));
- cp->phys.sense.size = cpu_to_scr(sizeof(cp->sense_buf));
-
- /*
- ** requeue the command.
- */
- startp = NCB_SCRIPTH_PHYS (np, sdata_in);
-
- cp->phys.header.savep = cpu_to_scr(startp);
- cp->phys.header.goalp = cpu_to_scr(startp + 16);
- cp->phys.header.lastp = cpu_to_scr(startp);
- cp->phys.header.wgoalp = cpu_to_scr(startp + 16);
- cp->phys.header.wlastp = cpu_to_scr(startp);
-
- cp->host_status = cp->nego_status ? HS_NEGOTIATE : HS_BUSY;
- cp->scsi_status = S_ILLEGAL;
- cp->host_flags = (HF_AUTO_SENSE|HF_DATA_IN);
-
- cp->phys.header.go.start =
- cpu_to_scr(NCB_SCRIPT_PHYS (np, select));
-
- /*
- ** If lp not yet allocated, requeue the command.
- */
- if (!lp)
- ncr_put_start_queue(np, cp);
- break;
- }
-
- /*
- ** requeue awaiting scsi commands for this lun.
- */
- if (lp)
- ncr_start_next_ccb(np, lp, 1);
-
- return;
-}
-
-/*----------------------------------------------------------
-**
-** After a device has accepted some management message
-** as BUS DEVICE RESET, ABORT TASK, etc ..., or when
-** a device signals a UNIT ATTENTION condition, some
-** tasks are thrown away by the device. We are required
-** to reflect that on our tasks list since the device
-** will never complete these tasks.
-**
-** This function completes all disconnected CCBs for a
-** given target that matches the following criteria:
-** - lun=-1 means any logical UNIT otherwise a given one.
-** - task=-1 means any task, otherwise a given one.
-**----------------------------------------------------------
-*/
-static int ncr_clear_tasks(ncb_p np, u_char hsts,
- int target, int lun, int task)
-{
- int i = 0;
- ccb_p cp;
-
- for (cp = np->ccbc; cp; cp = cp->link_ccb) {
- if (cp->host_status != HS_DISCONNECT)
- continue;
- if (cp->target != target)
- continue;
- if (lun != -1 && cp->lun != lun)
- continue;
- if (task != -1 && cp->tag != NO_TAG && cp->scsi_smsg[2] != task)
- continue;
- cp->host_status = hsts;
- cp->scsi_status = S_ILLEGAL;
- ncr_complete(np, cp);
- ++i;
- }
- return i;
-}
-
-/*==========================================================
-**
-** ncr chip handler for TASKS recovery.
-**
-**==========================================================
-**
-** We cannot safely abort a command, while the SCRIPTS
-** processor is running, since we just would be in race
-** with it.
-**
-** As long as we have tasks to abort, we keep the SEM
-** bit set in the ISTAT. When this bit is set, the
-** SCRIPTS processor interrupts (SIR_SCRIPT_STOPPED)
-** each time it enters the scheduler.
-**
-** If we have to reset a target, clear tasks of a unit,
-** or to perform the abort of a disconnected job, we
-** restart the SCRIPTS for selecting the target. Once
-** selected, the SCRIPTS interrupts (SIR_TARGET_SELECTED).
-** If it loses arbitration, the SCRIPTS will interrupt again
-** the next time it will enter its scheduler, and so on ...
-**
-** On SIR_TARGET_SELECTED, we scan for the more
-** appropriate thing to do:
-**
-** - If nothing, we just sent a M_ABORT message to the
-** target to get rid of the useless SCSI bus ownership.
-** According to the specs, no tasks shall be affected.
-** - If the target is to be reset, we send it a M_RESET
-** message.
-** - If a logical UNIT is to be cleared , we send the
-** IDENTIFY(lun) + M_ABORT.
-** - If an untagged task is to be aborted, we send the
-** IDENTIFY(lun) + M_ABORT.
-** - If a tagged task is to be aborted, we send the
-** IDENTIFY(lun) + task attributes + M_ABORT_TAG.
-**
-** Once our 'kiss of death' :) message has been accepted
-** by the target, the SCRIPTS interrupts again
-** (SIR_ABORT_SENT). On this interrupt, we complete
-** all the CCBs that should have been aborted by the
-** target according to our message.
-**
-**----------------------------------------------------------
-*/
-static void ncr_sir_task_recovery(ncb_p np, int num)
-{
- ccb_p cp;
- tcb_p tp;
- int target=-1, lun=-1, task;
- int i, k;
- u_char *p;
-
- switch(num) {
- /*
- ** The SCRIPTS processor stopped before starting
- ** the next command in order to allow us to perform
- ** some task recovery.
- */
- case SIR_SCRIPT_STOPPED:
-
- /*
- ** Do we have any target to reset or unit to clear ?
- */
- for (i = 0 ; i < MAX_TARGET ; i++) {
- tp = &np->target[i];
- if (tp->to_reset || (tp->l0p && tp->l0p->to_clear)) {
- target = i;
- break;
- }
- if (!tp->lmp)
- continue;
- for (k = 1 ; k < MAX_LUN ; k++) {
- if (tp->lmp[k] && tp->lmp[k]->to_clear) {
- target = i;
- break;
- }
- }
- if (target != -1)
- break;
- }
-
- /*
- ** If not, look at the CCB list for any
- ** disconnected CCB to be aborted.
- */
- if (target == -1) {
- for (cp = np->ccbc; cp; cp = cp->link_ccb) {
- if (cp->host_status != HS_DISCONNECT)
- continue;
- if (cp->to_abort) {
- target = cp->target;
- break;
- }
- }
- }
-
- /*
- ** If some target is to be selected,
- ** prepare and start the selection.
- */
- if (target != -1) {
- tp = &np->target[target];
- np->abrt_sel.sel_id = target;
- np->abrt_sel.sel_scntl3 = tp->wval;
- np->abrt_sel.sel_sxfer = tp->sval;
- np->abrt_sel.sel_scntl4 = tp->uval;
- OUTL(nc_dsa, np->p_ncb);
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, sel_for_abort));
- return;
- }
-
- /*
- ** Nothing is to be selected, so we donnot need
- ** to synchronize with the SCRIPTS anymore.
- ** Remove the SEM flag from the ISTAT.
- */
- np->istat_sem = 0;
- OUTB (nc_istat, SIGP);
-
- /*
- ** Now look at CCBs to abort that haven't started yet.
- ** Remove all those CCBs from the start queue and
- ** complete them with appropriate status.
- ** Btw, the SCRIPTS processor is still stopped, so
- ** we are not in race.
- */
- for (cp = np->ccbc; cp; cp = cp->link_ccb) {
- if (cp->host_status != HS_BUSY &&
- cp->host_status != HS_NEGOTIATE)
- continue;
- if (!cp->to_abort)
- continue;
-#ifdef SCSI_NCR_IARB_SUPPORT
- /*
- ** If we are using IMMEDIATE ARBITRATION, we donnot
- ** want to cancel the last queued CCB, since the
- ** SCRIPTS may have anticipated the selection.
- */
- if (cp == np->last_cp) {
- cp->to_abort = 0;
- continue;
- }
-#endif
- /*
- ** Compute index of next position in the start
- ** queue the SCRIPTS will schedule.
- */
- i = (INL (nc_scratcha) - np->p_squeue) / 4;
-
- /*
- ** Remove the job from the start queue.
- */
- k = -1;
- while (1) {
- if (i == np->squeueput)
- break;
- if (k == -1) { /* Not found yet */
- if (cp == ncr_ccb_from_dsa(np,
- scr_to_cpu(np->squeue[i])))
- k = i; /* Found */
- }
- else {
- /*
- ** Once found, we have to move
- ** back all jobs by 1 position.
- */
- np->squeue[k] = np->squeue[i];
- k += 2;
- if (k >= MAX_START*2)
- k = 0;
- }
-
- i += 2;
- if (i >= MAX_START*2)
- i = 0;
- }
- /*
- ** If job removed, repair the start queue.
- */
- if (k != -1) {
- np->squeue[k] = np->squeue[i]; /* Idle task */
- np->squeueput = k; /* Start queue pointer */
- }
- cp->host_status = HS_ABORTED;
- cp->scsi_status = S_ILLEGAL;
- ncr_complete(np, cp);
- }
- break;
- /*
- ** The SCRIPTS processor has selected a target
- ** we may have some manual recovery to perform for.
- */
- case SIR_TARGET_SELECTED:
- target = (INB (nc_sdid) & 0xf);
- tp = &np->target[target];
-
- np->abrt_tbl.addr = cpu_to_scr(vtobus(np->abrt_msg));
-
- /*
- ** If the target is to be reset, prepare a
- ** M_RESET message and clear the to_reset flag
- ** since we donnot expect this operation to fail.
- */
- if (tp->to_reset) {
- np->abrt_msg[0] = M_RESET;
- np->abrt_tbl.size = 1;
- tp->to_reset = 0;
- break;
- }
-
- /*
- ** Otherwise, look for some logical unit to be cleared.
- */
- if (tp->l0p && tp->l0p->to_clear)
- lun = 0;
- else if (tp->lmp) {
- for (k = 1 ; k < MAX_LUN ; k++) {
- if (tp->lmp[k] && tp->lmp[k]->to_clear) {
- lun = k;
- break;
- }
- }
- }
-
- /*
- ** If a logical unit is to be cleared, prepare
- ** an IDENTIFY(lun) + ABORT MESSAGE.
- */
- if (lun != -1) {
- lcb_p lp = ncr_lp(np, tp, lun);
- lp->to_clear = 0; /* We donnot expect to fail here */
- np->abrt_msg[0] = M_IDENTIFY | lun;
- np->abrt_msg[1] = M_ABORT;
- np->abrt_tbl.size = 2;
- break;
- }
-
- /*
- ** Otherwise, look for some disconnected job to
- ** abort for this target.
- */
- for (cp = np->ccbc; cp; cp = cp->link_ccb) {
- if (cp->host_status != HS_DISCONNECT)
- continue;
- if (cp->target != target)
- continue;
- if (cp->to_abort)
- break;
- }
-
- /*
- ** If we have none, probably since the device has
- ** completed the command before we won abitration,
- ** send a M_ABORT message without IDENTIFY.
- ** According to the specs, the device must just
- ** disconnect the BUS and not abort any task.
- */
- if (!cp) {
- np->abrt_msg[0] = M_ABORT;
- np->abrt_tbl.size = 1;
- break;
- }
-
- /*
- ** We have some task to abort.
- ** Set the IDENTIFY(lun)
- */
- np->abrt_msg[0] = M_IDENTIFY | cp->lun;
-
- /*
- ** If we want to abort an untagged command, we
- ** will send a IDENTIFY + M_ABORT.
- ** Otherwise (tagged command), we will send
- ** a IDENTITFY + task attributes + ABORT TAG.
- */
- if (cp->tag == NO_TAG) {
- np->abrt_msg[1] = M_ABORT;
- np->abrt_tbl.size = 2;
- }
- else {
- np->abrt_msg[1] = cp->scsi_smsg[1];
- np->abrt_msg[2] = cp->scsi_smsg[2];
- np->abrt_msg[3] = M_ABORT_TAG;
- np->abrt_tbl.size = 4;
- }
- cp->to_abort = 0; /* We donnot expect to fail here */
- break;
-
- /*
- ** The target has accepted our message and switched
- ** to BUS FREE phase as we expected.
- */
- case SIR_ABORT_SENT:
- target = (INB (nc_sdid) & 0xf);
- tp = &np->target[target];
-
- /*
- ** If we didn't abort anything, leave here.
- */
- if (np->abrt_msg[0] == M_ABORT)
- break;
-
- /*
- ** If we sent a M_RESET, then a hardware reset has
- ** been performed by the target.
- ** - Reset everything to async 8 bit
- ** - Tell ourself to negotiate next time :-)
- ** - Prepare to clear all disconnected CCBs for
- ** this target from our task list (lun=task=-1)
- */
- lun = -1;
- task = -1;
- if (np->abrt_msg[0] == M_RESET) {
- tp->sval = 0;
- tp->wval = np->rv_scntl3;
- tp->uval = np->rv_scntl4;
- ncr_set_sync_wide_status(np, target);
- ncr_negotiate(np, tp);
- }
-
- /*
- ** Otherwise, check for the LUN and TASK(s)
- ** concerned by the cancelation.
- ** If it is not ABORT_TAG then it is CLEAR_QUEUE
- ** or an ABORT message :-)
- */
- else {
- lun = np->abrt_msg[0] & 0x3f;
- if (np->abrt_msg[1] == M_ABORT_TAG)
- task = np->abrt_msg[2];
- }
-
- /*
- ** Complete all the CCBs the device should have
- ** aborted due to our 'kiss of death' message.
- */
- (void) ncr_clear_tasks(np, HS_ABORTED, target, lun, task);
- break;
-
- /*
- ** We have performed a auto-sense that succeeded.
- ** If the device reports a UNIT ATTENTION condition
- ** due to a RESET condition, we must complete all
- ** disconnect CCBs for this unit since the device
- ** shall have thrown them away.
- ** Since I haven't time to guess what the specs are
- ** expecting for other UNIT ATTENTION conditions, I
- ** decided to only care about RESET conditions. :)
- */
- case SIR_AUTO_SENSE_DONE:
- cp = ncr_ccb_from_dsa(np, INL (nc_dsa));
- if (!cp)
- break;
- memcpy(cp->cmd->sense_buffer, cp->sense_buf,
- sizeof(cp->cmd->sense_buffer));
- p = &cp->cmd->sense_buffer[0];
-
- if (p[0] != 0x70 || p[2] != 0x6 || p[12] != 0x29)
- break;
-#if 0
- (void) ncr_clear_tasks(np, HS_RESET, cp->target, cp->lun, -1);
-#endif
- break;
- }
-
- /*
- ** Print to the log the message we intend to send.
- */
- if (num == SIR_TARGET_SELECTED) {
- PRINT_TARGET(np, target);
- ncr_printl_hex("control msgout:", np->abrt_msg,
- np->abrt_tbl.size);
- np->abrt_tbl.size = cpu_to_scr(np->abrt_tbl.size);
- }
-
- /*
- ** Let the SCRIPTS processor continue.
- */
- OUTONB_STD ();
-}
-
-
-/*==========================================================
-**
-** G�rard's alchemy:) that deals with with the data
-** pointer for both MDP and the residual calculation.
-**
-**==========================================================
-**
-** I didn't want to bloat the code by more than 200
-** lignes for the handling of both MDP and the residual.
-** This has been achieved by using a data pointer
-** representation consisting in an index in the data
-** array (dp_sg) and a negative offset (dp_ofs) that
-** have the following meaning:
-**
-** - dp_sg = MAX_SCATTER
-** we are at the end of the data script.
-** - dp_sg < MAX_SCATTER
-** dp_sg points to the next entry of the scatter array
-** we want to transfer.
-** - dp_ofs < 0
-** dp_ofs represents the residual of bytes of the
-** previous entry scatter entry we will send first.
-** - dp_ofs = 0
-** no residual to send first.
-**
-** The function ncr_evaluate_dp() accepts an arbitray
-** offset (basically from the MDP message) and returns
-** the corresponding values of dp_sg and dp_ofs.
-**
-**----------------------------------------------------------
-*/
-
-static int ncr_evaluate_dp(ncb_p np, ccb_p cp, u_int32 scr, int *ofs)
-{
- u_int32 dp_scr;
- int dp_ofs, dp_sg, dp_sgmin;
- int tmp;
- struct pm_ctx *pm;
-
- /*
- ** Compute the resulted data pointer in term of a script
- ** address within some DATA script and a signed byte offset.
- */
- dp_scr = scr;
- dp_ofs = *ofs;
- if (dp_scr == NCB_SCRIPT_PHYS (np, pm0_data))
- pm = &cp->phys.pm0;
- else if (dp_scr == NCB_SCRIPT_PHYS (np, pm1_data))
- pm = &cp->phys.pm1;
- else
- pm = 0;
-
- if (pm) {
- dp_scr = scr_to_cpu(pm->ret);
- dp_ofs -= scr_to_cpu(pm->sg.size);
- }
-
- /*
- ** Deduce the index of the sg entry.
- ** Keep track of the index of the first valid entry.
- ** If result is dp_sg = MAX_SCATTER, then we are at the
- ** end of the data and vice-versa.
- */
- tmp = scr_to_cpu(cp->phys.header.goalp);
- dp_sg = MAX_SCATTER;
- if (dp_scr != tmp)
- dp_sg -= (tmp - 8 - (int)dp_scr) / (SCR_SG_SIZE*4);
- dp_sgmin = MAX_SCATTER - cp->segments;
-
- /*
- ** Move to the sg entry the data pointer belongs to.
- **
- ** If we are inside the data area, we expect result to be:
- **
- ** Either,
- ** dp_ofs = 0 and dp_sg is the index of the sg entry
- ** the data pointer belongs to (or the end of the data)
- ** Or,
- ** dp_ofs < 0 and dp_sg is the index of the sg entry
- ** the data pointer belongs to + 1.
- */
- if (dp_ofs < 0) {
- int n;
- while (dp_sg > dp_sgmin) {
- --dp_sg;
- tmp = scr_to_cpu(cp->phys.data[dp_sg].size);
- n = dp_ofs + (tmp & 0xffffff);
- if (n > 0) {
- ++dp_sg;
- break;
- }
- dp_ofs = n;
- }
- }
- else if (dp_ofs > 0) {
- while (dp_sg < MAX_SCATTER) {
- tmp = scr_to_cpu(cp->phys.data[dp_sg].size);
- dp_ofs -= (tmp & 0xffffff);
- ++dp_sg;
- if (dp_ofs <= 0)
- break;
- }
- }
-
- /*
- ** Make sure the data pointer is inside the data area.
- ** If not, return some error.
- */
- if (dp_sg < dp_sgmin || (dp_sg == dp_sgmin && dp_ofs < 0))
- goto out_err;
- else if (dp_sg > MAX_SCATTER || (dp_sg == MAX_SCATTER && dp_ofs > 0))
- goto out_err;
-
- /*
- ** Save the extreme pointer if needed.
- */
- if (dp_sg > cp->ext_sg ||
- (dp_sg == cp->ext_sg && dp_ofs > cp->ext_ofs)) {
- cp->ext_sg = dp_sg;
- cp->ext_ofs = dp_ofs;
- }
-
- /*
- ** Return data.
- */
- *ofs = dp_ofs;
- return dp_sg;
-
-out_err:
- return -1;
-}
-
-/*==========================================================
-**
-** ncr chip handler for MODIFY DATA POINTER MESSAGE
-**
-**==========================================================
-**
-** We also call this function on IGNORE WIDE RESIDUE
-** messages that do not match a SWIDE full condition.
-** Btw, we assume in that situation that such a message
-** is equivalent to a MODIFY DATA POINTER (offset=-1).
-**
-**----------------------------------------------------------
-*/
-
-static void ncr_modify_dp(ncb_p np, tcb_p tp, ccb_p cp, int ofs)
-{
- int dp_ofs = ofs;
- u_int32 dp_scr = INL (nc_temp);
- u_int32 dp_ret;
- u_int32 tmp;
- u_char hflags;
- int dp_sg;
- struct pm_ctx *pm;
-
- /*
- ** Not supported for auto_sense;
- */
- if (cp->host_flags & HF_AUTO_SENSE)
- goto out_reject;
-
- /*
- ** Apply our alchemy:) (see comments in ncr_evaluate_dp()),
- ** to the resulted data pointer.
- */
- dp_sg = ncr_evaluate_dp(np, cp, dp_scr, &dp_ofs);
- if (dp_sg < 0)
- goto out_reject;
-
- /*
- ** And our alchemy:) allows to easily calculate the data
- ** script address we want to return for the next data phase.
- */
- dp_ret = cpu_to_scr(cp->phys.header.goalp);
- dp_ret = dp_ret - 8 - (MAX_SCATTER - dp_sg) * (SCR_SG_SIZE*4);
-
- /*
- ** If offset / scatter entry is zero we donnot need
- ** a context for the new current data pointer.
- */
- if (dp_ofs == 0) {
- dp_scr = dp_ret;
- goto out_ok;
- }
-
- /*
- ** Get a context for the new current data pointer.
- */
- hflags = INB (HF_PRT);
-
- if (hflags & HF_DP_SAVED)
- hflags ^= HF_ACT_PM;
-
- if (!(hflags & HF_ACT_PM)) {
- pm = &cp->phys.pm0;
- dp_scr = NCB_SCRIPT_PHYS (np, pm0_data);
- }
- else {
- pm = &cp->phys.pm1;
- dp_scr = NCB_SCRIPT_PHYS (np, pm1_data);
- }
-
- hflags &= ~(HF_DP_SAVED);
-
- OUTB (HF_PRT, hflags);
-
- /*
- ** Set up the new current data pointer.
- ** ofs < 0 there, and for the next data phase, we
- ** want to transfer part of the data of the sg entry
- ** corresponding to index dp_sg-1 prior to returning
- ** to the main data script.
- */
- pm->ret = cpu_to_scr(dp_ret);
- tmp = scr_to_cpu(cp->phys.data[dp_sg-1].addr);
- tmp += scr_to_cpu(cp->phys.data[dp_sg-1].size) + dp_ofs;
- pm->sg.addr = cpu_to_scr(tmp);
- pm->sg.size = cpu_to_scr(-dp_ofs);
-
-out_ok:
- OUTL (nc_temp, dp_scr);
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
- return;
-
-out_reject:
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
-}
-
-
-/*==========================================================
-**
-** ncr chip calculation of the data residual.
-**
-**==========================================================
-**
-** As I used to say, the requirement of data residual
-** in SCSI is broken, useless and cannot be achieved
-** without huge complexity.
-** But most OSes and even the official CAM require it.
-** When stupidity happens to be so widely spread inside
-** a community, it gets hard to convince.
-**
-** Anyway, I don't care, since I am not going to use
-** any software that considers this data residual as
-** a relevant information. :)
-**
-**----------------------------------------------------------
-*/
-
-static int ncr_compute_residual(ncb_p np, ccb_p cp)
-{
- int dp_sg, dp_sgmin, tmp;
- int resid=0;
- int dp_ofs = 0;
-
- /*
- * Check for some data lost or just thrown away.
- * We are not required to be quite accurate in this
- * situation. Btw, if we are odd for output and the
- * device claims some more data, it may well happen
- * than our residual be zero. :-)
- */
- if (cp->xerr_status & (XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN)) {
- if (cp->xerr_status & XE_EXTRA_DATA)
- resid -= cp->extra_bytes;
- if (cp->xerr_status & XE_SODL_UNRUN)
- ++resid;
- if (cp->xerr_status & XE_SWIDE_OVRUN)
- --resid;
- }
-
-
- /*
- ** If SCRIPTS reaches its goal point, then
- ** there is no additionnal residual.
- */
- if (cp->phys.header.lastp == cp->phys.header.goalp)
- return resid;
-
- /*
- ** If the last data pointer is data_io (direction
- ** unknown), then no data transfer should have
- ** taken place.
- */
- if (cp->phys.header.lastp == NCB_SCRIPTH_PHYS (np, data_io))
- return cp->data_len;
-
- /*
- ** If no data transfer occurs, or if the data
- ** pointer is weird, return full residual.
- */
- if (cp->startp == cp->phys.header.lastp ||
- ncr_evaluate_dp(np, cp, scr_to_cpu(cp->phys.header.lastp),
- &dp_ofs) < 0) {
- return cp->data_len;
- }
-
- /*
- ** We are now full comfortable in the computation
- ** of the data residual (2's complement).
- */
- dp_sgmin = MAX_SCATTER - cp->segments;
- resid = -cp->ext_ofs;
- for (dp_sg = cp->ext_sg; dp_sg < MAX_SCATTER; ++dp_sg) {
- tmp = scr_to_cpu(cp->phys.data[dp_sg].size);
- resid += (tmp & 0xffffff);
- }
-
- /*
- ** Hopefully, the result is not too wrong.
- */
- return resid;
-}
-
-/*==========================================================
-**
-** Print out the containt of a SCSI message.
-**
-**==========================================================
-*/
-
-static int ncr_show_msg (u_char * msg)
-{
- u_char i;
- printk ("%x",*msg);
- if (*msg==M_EXTENDED) {
- for (i=1;i<8;i++) {
- if (i-1>msg[1]) break;
- printk ("-%x",msg[i]);
- };
- return (i+1);
- } else if ((*msg & 0xf0) == 0x20) {
- printk ("-%x",msg[1]);
- return (2);
- };
- return (1);
-}
-
-static void ncr_print_msg (ccb_p cp, char *label, u_char *msg)
-{
- if (cp)
- PRINT_ADDR(cp->cmd);
- if (label)
- printk ("%s: ", label);
-
- (void) ncr_show_msg (msg);
- printk (".\n");
-}
-
-/*===================================================================
-**
-** Negotiation for WIDE and SYNCHRONOUS DATA TRANSFER.
-**
-**===================================================================
-**
-** Was Sie schon immer ueber transfermode negotiation wissen wollten ...
-**
-** We try to negotiate sync and wide transfer only after
-** a successful inquire command. We look at byte 7 of the
-** inquire data to determine the capabilities of the target.
-**
-** When we try to negotiate, we append the negotiation message
-** to the identify and (maybe) simple tag message.
-** The host status field is set to HS_NEGOTIATE to mark this
-** situation.
-**
-** If the target doesn't answer this message immediately
-** (as required by the standard), the SIR_NEGO_FAILED interrupt
-** will be raised eventually.
-** The handler removes the HS_NEGOTIATE status, and sets the
-** negotiated value to the default (async / nowide).
-**
-** If we receive a matching answer immediately, we check it
-** for validity, and set the values.
-**
-** If we receive a Reject message immediately, we assume the
-** negotiation has failed, and fall back to standard values.
-**
-** If we receive a negotiation message while not in HS_NEGOTIATE
-** state, it's a target initiated negotiation. We prepare a
-** (hopefully) valid answer, set our parameters, and send back
-** this answer to the target.
-**
-** If the target doesn't fetch the answer (no message out phase),
-** we assume the negotiation has failed, and fall back to default
-** settings (SIR_NEGO_PROTO interrupt).
-**
-** When we set the values, we adjust them in all ccbs belonging
-** to this target, in the controller's register, and in the "phys"
-** field of the controller's struct ncb.
-**
-**---------------------------------------------------------------------
-*/
-
-/*==========================================================
-**
-** ncr chip handler for SYNCHRONOUS DATA TRANSFER
-** REQUEST (SDTR) message.
-**
-**==========================================================
-**
-** Read comments above.
-**
-**----------------------------------------------------------
-*/
-static void ncr_sync_nego(ncb_p np, tcb_p tp, ccb_p cp)
-{
- u_char scntl3, scntl4;
- u_char chg, ofs, per, fak;
-
- /*
- ** Synchronous request message received.
- */
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "sync msg in", np->msgin);
- };
-
- /*
- ** get requested values.
- */
-
- chg = 0;
- per = np->msgin[3];
- ofs = np->msgin[4];
- if (ofs==0) per=255;
-
- /*
- ** if target sends SDTR message,
- ** it CAN transfer synch.
- */
-
- if (ofs)
- tp->inq_byte7 |= INQ7_SYNC;
-
- /*
- ** check values against driver limits.
- */
-
- if (per < np->minsync)
- {chg = 1; per = np->minsync;}
- if (per < tp->minsync)
- {chg = 1; per = tp->minsync;}
- if (ofs > np->maxoffs_st)
- {chg = 1; ofs = np->maxoffs_st;}
- if (ofs > tp->maxoffs)
- {chg = 1; ofs = tp->maxoffs;}
-
- /*
- ** Check against controller limits.
- */
- fak = 7;
- scntl3 = 0;
- scntl4 = 0;
- if (ofs != 0) {
- ncr_getsync(np, per, &fak, &scntl3);
- if (fak > 7) {
- chg = 1;
- ofs = 0;
- }
- }
- if (ofs == 0) {
- fak = 7;
- per = 0;
- scntl3 = 0;
- scntl4 = 0;
- tp->minsync = 0;
- }
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- PRINT_ADDR(cp->cmd);
- printk ("sync: per=%d scntl3=0x%x scntl4=0x%x ofs=%d fak=%d chg=%d.\n",
- per, scntl3, scntl4, ofs, fak, chg);
- }
-
- if (INB (HS_PRT) == HS_NEGOTIATE) {
- OUTB (HS_PRT, HS_BUSY);
- switch (cp->nego_status) {
- case NS_SYNC:
- /*
- ** This was an answer message
- */
- if (chg) {
- /*
- ** Answer wasn't acceptable.
- */
- ncr_setsync (np, cp, 0, 0xe0, 0);
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- } else {
- /*
- ** Answer is ok.
- */
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- ncr_setsync (np, cp, scntl3, (fak<<5)|ofs,0);
- else
- ncr_setsync (np, cp, scntl3, ofs, scntl4);
-
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
- };
- return;
-
- case NS_WIDE:
- ncr_setwide (np, cp, 0, 0);
- break;
- };
- };
-
- /*
- ** It was a request. Set value and
- ** prepare an answer message
- */
-
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- ncr_setsync (np, cp, scntl3, (fak<<5)|ofs,0);
- else
- ncr_setsync (np, cp, scntl3, ofs, scntl4);
-
- np->msgout[0] = M_EXTENDED;
- np->msgout[1] = 3;
- np->msgout[2] = M_X_SYNC_REQ;
- np->msgout[3] = per;
- np->msgout[4] = ofs;
-
- cp->nego_status = NS_SYNC;
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "sync msgout", np->msgout);
- }
-
- np->msgin [0] = M_NOOP;
-
- if (!ofs)
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- else
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, sdtr_resp));
-}
-
-/*==========================================================
-**
-** ncr chip handler for WIDE DATA TRANSFER REQUEST
-** (WDTR) message.
-**
-**==========================================================
-**
-** Read comments above.
-**
-**----------------------------------------------------------
-*/
-static void ncr_wide_nego(ncb_p np, tcb_p tp, ccb_p cp)
-{
- u_char chg, wide;
-
- /*
- ** Wide request message received.
- */
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "wide msgin", np->msgin);
- };
-
- /*
- ** get requested values.
- */
-
- chg = 0;
- wide = np->msgin[3];
-
- /*
- ** if target sends WDTR message,
- ** it CAN transfer wide.
- */
-
- if (wide)
- tp->inq_byte7 |= INQ7_WIDE16;
-
- /*
- ** check values against driver limits.
- */
-
- if (wide > tp->usrwide)
- {chg = 1; wide = tp->usrwide;}
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- PRINT_ADDR(cp->cmd);
- printk ("wide: wide=%d chg=%d.\n", wide, chg);
- }
-
- if (INB (HS_PRT) == HS_NEGOTIATE) {
- OUTB (HS_PRT, HS_BUSY);
- switch (cp->nego_status) {
- case NS_WIDE:
- /*
- ** This was an answer message
- */
- if (chg) {
- /*
- ** Answer wasn't acceptable.
- */
- ncr_setwide (np, cp, 0, 1);
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- } else {
- /*
- ** Answer is ok.
- */
- ncr_setwide (np, cp, wide, 1);
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
- };
- return;
-
- case NS_SYNC:
- ncr_setsync (np, cp, 0, 0xe0, 0);
- break;
- };
- };
-
- /*
- ** It was a request, set value and
- ** prepare an answer message
- */
-
- ncr_setwide (np, cp, wide, 1);
-
- np->msgout[0] = M_EXTENDED;
- np->msgout[1] = 2;
- np->msgout[2] = M_X_WIDE_REQ;
- np->msgout[3] = wide;
-
- np->msgin [0] = M_NOOP;
-
- cp->nego_status = NS_WIDE;
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "wide msgout", np->msgout);
- }
-
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, wdtr_resp));
-}
-/*==========================================================
-**
-** ncr chip handler for PARALLEL PROTOCOL REQUEST
-** (PPR) message.
-**
-**==========================================================
-**
-** Read comments above.
-**
-**----------------------------------------------------------
-*/
-static void ncr_ppr_nego(ncb_p np, tcb_p tp, ccb_p cp)
-{
- u_char scntl3, scntl4;
- u_char chg, ofs, per, fak, wth, dt;
-
- /*
- ** PPR message received.
- */
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "ppr msg in", np->msgin);
- };
-
- /*
- ** get requested values.
- */
-
- chg = 0;
- per = np->msgin[3];
- ofs = np->msgin[5];
- wth = np->msgin[6];
- dt = np->msgin[7];
- if (ofs==0) per=255;
-
- /*
- ** if target sends sync (wide),
- ** it CAN transfer synch (wide).
- */
-
- if (ofs)
- tp->inq_byte7 |= INQ7_SYNC;
-
- if (wth)
- tp->inq_byte7 |= INQ7_WIDE16;
-
- /*
- ** check values against driver limits.
- */
-
- if (wth > tp->usrwide)
- {chg = 1; wth = tp->usrwide;}
- if (per < np->minsync)
- {chg = 1; per = np->minsync;}
- if (per < tp->minsync)
- {chg = 1; per = tp->minsync;}
- if (ofs > tp->maxoffs)
- {chg = 1; ofs = tp->maxoffs;}
-
- /*
- ** Check against controller limits.
- */
- fak = 7;
- scntl3 = 0;
- scntl4 = 0;
- if (ofs != 0) {
- scntl4 = dt ? 0x80 : 0;
- ncr_getsync(np, per, &fak, &scntl3);
- if (fak > 7) {
- chg = 1;
- ofs = 0;
- }
- }
- if (ofs == 0) {
- fak = 7;
- per = 0;
- scntl3 = 0;
- scntl4 = 0;
- tp->minsync = 0;
- }
-
- /*
- ** If target responds with Ultra 3 speed
- ** but narrow or not DT, reject.
- ** If target responds with DT request
- ** but not Ultra3 speeds, reject message,
- ** reset min sync for target to 0x0A and
- ** set flags to re-negotiate.
- */
-
- if ((per == 0x09) && ofs && (!wth || !dt))
- chg = 1;
- else if (( (per > 0x09) && dt) )
- chg = 2;
-
- /* Not acceptable since beyond controller limit */
- if (!dt && ofs > np->maxoffs_st)
- {chg = 2; ofs = np->maxoffs_st;}
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- PRINT_ADDR(cp->cmd);
- printk ("ppr: wth=%d per=%d scntl3=0x%x scntl4=0x%x ofs=%d fak=%d chg=%d.\n",
- wth, per, scntl3, scntl4, ofs, fak, chg);
- }
-
- if (INB (HS_PRT) == HS_NEGOTIATE) {
- OUTB (HS_PRT, HS_BUSY);
- switch (cp->nego_status) {
- case NS_PPR:
- /*
- ** This was an answer message
- */
- if (chg) {
- /*
- ** Answer wasn't acceptable.
- */
- if (chg == 2) {
- /* Send message reject and reset flags for
- ** host to re-negotiate with min period 0x0A.
- */
- tp->minsync = 0x0A;
- tp->period = 0;
- tp->widedone = 0;
- }
- ncr_setsyncwide (np, cp, 0, 0xe0, 0, 0);
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- } else {
- /*
- ** Answer is ok.
- */
-
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- ncr_setsyncwide (np, cp, scntl3, (fak<<5)|ofs,0, wth);
- else
- ncr_setsyncwide (np, cp, scntl3, ofs, scntl4, wth);
-
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
-
- };
- return;
-
- case NS_SYNC:
- ncr_setsync (np, cp, 0, 0xe0, 0);
- break;
-
- case NS_WIDE:
- ncr_setwide (np, cp, 0, 0);
- break;
- };
- };
-
- /*
- ** It was a request. Set value and
- ** prepare an answer message
- **
- ** If narrow or not DT and requesting Ultra3
- ** slow the bus down and force ST. If not
- ** requesting Ultra3, force ST.
- ** Max offset is 31=0x1f if ST mode.
- */
-
- if ((per == 0x09) && ofs && (!wth || !dt)) {
- per = 0x0A;
- dt = 0;
- }
- else if ( (per > 0x09) && dt) {
- dt = 0;
- }
- if (!dt && ofs > np->maxoffs_st)
- ofs = np->maxoffs_st;
-
- if ((np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66))
- ncr_setsyncwide (np, cp, scntl3, (fak<<5)|ofs,0, wth);
- else
- ncr_setsyncwide (np, cp, scntl3, ofs, scntl4, wth);
-
- np->msgout[0] = M_EXTENDED;
- np->msgout[1] = 6;
- np->msgout[2] = M_X_PPR_REQ;
- np->msgout[3] = per;
- np->msgout[4] = 0;
- np->msgout[5] = ofs;
- np->msgout[6] = wth;
- np->msgout[7] = dt;
-
- cp->nego_status = NS_PPR;
-
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- ncr_print_msg(cp, "ppr msgout", np->msgout);
- }
-
- np->msgin [0] = M_NOOP;
-
- if (!ofs)
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- else
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, ppr_resp));
-}
-
-
-
-/*
-** Reset SYNC or WIDE to default settings.
-** Called when a negotiation does not succeed either
-** on rejection or on protocol error.
-*/
-static void ncr_nego_default(ncb_p np, tcb_p tp, ccb_p cp)
-{
- /*
- ** any error in negotiation:
- ** fall back to default mode.
- */
- switch (cp->nego_status) {
-
- case NS_SYNC:
- ncr_setsync (np, cp, 0, 0xe0, 0);
- break;
-
- case NS_WIDE:
- ncr_setwide (np, cp, 0, 0);
- break;
-
- case NS_PPR:
- /*
- * ppr_negotiation is set to 1 on the first ppr nego command.
- * If ppr is successful, it is reset to 2.
- * If unsuccessful it is reset to 0.
- */
- if (DEBUG_FLAGS & DEBUG_NEGO) {
- tcb_p tp=&np->target[cp->target];
- u_char factor, offset, width;
-
- ncr_get_xfer_info ( np, tp, &factor, &offset, &width);
-
- printk("Current factor %d offset %d width %d\n",
- factor, offset, width);
- }
- if (tp->ppr_negotiation == 2)
- ncr_setsyncwide (np, cp, 0, 0xe0, 0, 0);
- else if (tp->ppr_negotiation == 1) {
-
- /* First ppr command has received a M REJECT.
- * Do not change the existing wide/sync parameter
- * values (asyn/narrow if this as the first nego;
- * may be different if target initiates nego.).
- */
- tp->ppr_negotiation = 0;
- }
- else
- {
- tp->ppr_negotiation = 0;
- ncr_setwide (np, cp, 0, 0);
- }
- break;
- };
- np->msgin [0] = M_NOOP;
- np->msgout[0] = M_NOOP;
- cp->nego_status = 0;
-}
-
-/*==========================================================
-**
-** ncr chip handler for MESSAGE REJECT received for
-** a WIDE or SYNCHRONOUS negotiation.
-**
-** clear the PPR negotiation flag, all future nego.
-** will be SDTR and WDTR
-**
-**==========================================================
-**
-** Read comments above.
-**
-**----------------------------------------------------------
-*/
-static void ncr_nego_rejected(ncb_p np, tcb_p tp, ccb_p cp)
-{
- ncr_nego_default(np, tp, cp);
- OUTB (HS_PRT, HS_BUSY);
-}
-
-
-/*==========================================================
-**
-**
-** ncr chip exception handler for programmed interrupts.
-**
-**
-**==========================================================
-*/
-
-void ncr_int_sir (ncb_p np)
-{
- u_char num = INB (nc_dsps);
- u_long dsa = INL (nc_dsa);
- ccb_p cp = ncr_ccb_from_dsa(np, dsa);
- u_char target = INB (nc_sdid) & 0x0f;
- tcb_p tp = &np->target[target];
- int tmp;
-
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("I#%d", num);
-
- switch (num) {
- /*
- ** See comments in the SCRIPTS code.
- */
-#ifdef SCSI_NCR_PCIQ_SYNC_ON_INTR
- case SIR_DUMMY_INTERRUPT:
- goto out;
-#endif
-
- /*
- ** The C code is currently trying to recover from something.
- ** Typically, user want to abort some command.
- */
- case SIR_SCRIPT_STOPPED:
- case SIR_TARGET_SELECTED:
- case SIR_ABORT_SENT:
- case SIR_AUTO_SENSE_DONE:
- ncr_sir_task_recovery(np, num);
- return;
- /*
- ** The device didn't go to MSG OUT phase after having
- ** been selected with ATN. We donnot want to handle
- ** that.
- */
- case SIR_SEL_ATN_NO_MSG_OUT:
- printk ("%s:%d: No MSG OUT phase after selection with ATN.\n",
- ncr_name (np), target);
- goto out_stuck;
- /*
- ** The device didn't switch to MSG IN phase after
- ** having reseleted the initiator.
- */
- case SIR_RESEL_NO_MSG_IN:
- /*
- ** After reselection, the device sent a message that wasn't
- ** an IDENTIFY.
- */
- case SIR_RESEL_NO_IDENTIFY:
- /*
- ** If devices reselecting without sending an IDENTIFY
- ** message still exist, this should help.
- ** We just assume lun=0, 1 CCB, no tag.
- */
- if (tp->l0p) {
- OUTL (nc_dsa, scr_to_cpu(tp->l0p->tasktbl[0]));
- OUTL_DSP (NCB_SCRIPT_PHYS (np, resel_go));
- return;
- }
- /*
- ** The device reselected a LUN we donnot know of.
- */
- case SIR_RESEL_BAD_LUN:
- np->msgout[0] = M_RESET;
- goto out;
- /*
- ** The device reselected for an untagged nexus and we
- ** haven't any.
- */
- case SIR_RESEL_BAD_I_T_L:
- np->msgout[0] = M_ABORT;
- goto out;
- /*
- ** The device reselected for a tagged nexus that we donnot
- ** have.
- */
- case SIR_RESEL_BAD_I_T_L_Q:
- np->msgout[0] = M_ABORT_TAG;
- goto out;
- /*
- ** The SCRIPTS let us know that the device has grabbed
- ** our message and will abort the job.
- */
- case SIR_RESEL_ABORTED:
- np->lastmsg = np->msgout[0];
- np->msgout[0] = M_NOOP;
- printk ("%s:%d: message %x sent on bad reselection.\n",
- ncr_name (np), target, np->lastmsg);
- goto out;
- /*
- ** The SCRIPTS let us know that a message has been
- ** successfully sent to the device.
- */
- case SIR_MSG_OUT_DONE:
- np->lastmsg = np->msgout[0];
- np->msgout[0] = M_NOOP;
- /* Should we really care of that */
- if (np->lastmsg == M_PARITY || np->lastmsg == M_ID_ERROR) {
- if (cp) {
- cp->xerr_status &= ~XE_PARITY_ERR;
- if (!cp->xerr_status)
- OUTOFFB (HF_PRT, HF_EXT_ERR);
- }
- }
- goto out;
- /*
- ** The device didn't send a GOOD SCSI status.
- ** We may have some work to do prior to allow
- ** the SCRIPTS processor to continue.
- */
- case SIR_BAD_STATUS:
- if (!cp)
- goto out;
- ncr_sir_to_redo(np, num, cp);
- return;
- /*
- ** We are asked by the SCRIPTS to prepare a
- ** REJECT message.
- */
- case SIR_REJECT_TO_SEND:
- ncr_print_msg(cp, "M_REJECT to send for ", np->msgin);
- np->msgout[0] = M_REJECT;
- goto out;
- /*
- ** We have been ODD at the end of a DATA IN
- ** transfer and the device didn't send a
- ** IGNORE WIDE RESIDUE message.
- ** It is a data overrun condition.
- */
- case SIR_SWIDE_OVERRUN:
- if (cp) {
- OUTONB (HF_PRT, HF_EXT_ERR);
- cp->xerr_status |= XE_SWIDE_OVRUN;
- }
- goto out;
- /*
- ** We have been ODD at the end of a DATA OUT
- ** transfer.
- ** It is a data underrun condition.
- */
- case SIR_SODL_UNDERRUN:
- if (cp) {
- OUTONB (HF_PRT, HF_EXT_ERR);
- cp->xerr_status |= XE_SODL_UNRUN;
- }
- goto out;
- /*
- ** The device wants us to tranfer more data than
- ** expected or in the wrong direction.
- ** The number of extra bytes is in scratcha.
- ** It is a data overrun condition.
- */
- case SIR_DATA_OVERRUN:
- if (cp) {
- OUTONB (HF_PRT, HF_EXT_ERR);
- cp->xerr_status |= XE_EXTRA_DATA;
- cp->extra_bytes += INL (nc_scratcha);
- }
- goto out;
- /*
- ** The device switched to an illegal phase (4/5).
- */
- case SIR_BAD_PHASE:
- if (cp) {
- OUTONB (HF_PRT, HF_EXT_ERR);
- cp->xerr_status |= XE_BAD_PHASE;
- }
- goto out;
- /*
- ** We received a message.
- */
- case SIR_MSG_RECEIVED:
- if (!cp)
- goto out_stuck;
- switch (np->msgin [0]) {
- /*
- ** We received an extended message.
- ** We handle MODIFY DATA POINTER, SDTR, WDTR
- ** and reject all other extended messages.
- */
- case M_EXTENDED:
- switch (np->msgin [2]) {
- case M_X_MODIFY_DP:
- if (DEBUG_FLAGS & DEBUG_POINTER)
- ncr_print_msg(cp,"modify DP",np->msgin);
- tmp = (np->msgin[3]<<24) + (np->msgin[4]<<16) +
- (np->msgin[5]<<8) + (np->msgin[6]);
- ncr_modify_dp(np, tp, cp, tmp);
- return;
- case M_X_SYNC_REQ:
- ncr_sync_nego(np, tp, cp);
- return;
- case M_X_WIDE_REQ:
- ncr_wide_nego(np, tp, cp);
- return;
- case M_X_PPR_REQ:
- ncr_ppr_nego(np, tp, cp);
- return;
- default:
- goto out_reject;
- }
- break;
- /*
- ** We received a 1/2 byte message not handled from SCRIPTS.
- ** We are only expecting MESSAGE REJECT and IGNORE WIDE
- ** RESIDUE messages that haven't been anticipated by
- ** SCRIPTS on SWIDE full condition. Unanticipated IGNORE
- ** WIDE RESIDUE messages are aliased as MODIFY DP (-1).
- */
- case M_IGN_RESIDUE:
- if (DEBUG_FLAGS & DEBUG_POINTER)
- ncr_print_msg(cp,"ign wide residue", np->msgin);
- ncr_modify_dp(np, tp, cp, -1);
- return;
- case M_REJECT:
- if (INB (HS_PRT) == HS_NEGOTIATE)
- ncr_nego_rejected(np, tp, cp);
- else {
- PRINT_ADDR(cp->cmd);
- printk ("M_REJECT received (%x:%x).\n",
- scr_to_cpu(np->lastmsg), np->msgout[0]);
- }
- goto out_clrack;
- break;
- default:
- goto out_reject;
- }
- break;
- /*
- ** We received an unknown message.
- ** Ignore all MSG IN phases and reject it.
- */
- case SIR_MSG_WEIRD:
- ncr_print_msg(cp, "WEIRD message received", np->msgin);
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_weird));
- return;
- /*
- ** Negotiation failed.
- ** Target does not send us the reply.
- ** Remove the HS_NEGOTIATE status.
- */
- case SIR_NEGO_FAILED:
- OUTB (HS_PRT, HS_BUSY);
- /*
- ** Negotiation failed.
- ** Target does not want answer message.
- */
- case SIR_NEGO_PROTO:
- ncr_nego_default(np, tp, cp);
- goto out;
- };
-
-out:
- OUTONB_STD ();
- return;
-out_reject:
- OUTL_DSP (NCB_SCRIPTH_PHYS (np, msg_bad));
- return;
-out_clrack:
- OUTL_DSP (NCB_SCRIPT_PHYS (np, clrack));
- return;
-out_stuck:
- return;
-}
-
-
-/*==========================================================
-**
-**
-** Acquire a control block
-**
-**
-**==========================================================
-*/
-
-static ccb_p ncr_get_ccb (ncb_p np, u_char tn, u_char ln)
-{
- tcb_p tp = &np->target[tn];
- lcb_p lp = ncr_lp(np, tp, ln);
- u_short tag = NO_TAG;
- XPT_QUEHEAD *qp;
- ccb_p cp = (ccb_p) 0;
-
- /*
- ** Allocate a new CCB if needed.
- */
- if (xpt_que_empty(&np->free_ccbq))
- (void) ncr_alloc_ccb(np);
-
- /*
- ** Look for a free CCB
- */
- qp = xpt_remque_head(&np->free_ccbq);
- if (!qp)
- goto out;
- cp = xpt_que_entry(qp, struct ccb, link_ccbq);
-
- /*
- ** If the LCB is not yet available and we already
- ** have queued a CCB for a LUN without LCB,
- ** give up. Otherwise all is fine. :-)
- */
- if (!lp) {
- if (xpt_que_empty(&np->b0_ccbq))
- xpt_insque_head(&cp->link_ccbq, &np->b0_ccbq);
- else
- goto out_free;
- } else {
- /*
- ** Tune tag mode if asked by user.
- */
- if (lp->queuedepth != lp->numtags) {
- ncr_setup_tags(np, tn, ln);
- }
-
- /*
- ** Get a tag for this nexus if required.
- ** Keep from using more tags than we can handle.
- */
- if (lp->usetags) {
- if (lp->busyccbs < lp->maxnxs) {
- tag = lp->cb_tags[lp->ia_tag];
- ++lp->ia_tag;
- if (lp->ia_tag == MAX_TAGS)
- lp->ia_tag = 0;
- cp->tags_si = lp->tags_si;
- ++lp->tags_sum[cp->tags_si];
- }
- else
- goto out_free;
- }
-
- /*
- ** Put the CCB in the LUN wait queue and
- ** count it as busy.
- */
- xpt_insque_tail(&cp->link_ccbq, &lp->wait_ccbq);
- ++lp->busyccbs;
- }
-
- /*
- ** Remember all informations needed to free this CCB.
- */
- cp->to_abort = 0;
- cp->tag = tag;
- cp->target = tn;
- cp->lun = ln;
-
- if (DEBUG_FLAGS & DEBUG_TAGS) {
- PRINT_LUN(np, tn, ln);
- printk ("ccb @%p using tag %d.\n", cp, tag);
- }
-
-out:
- return cp;
-out_free:
- xpt_insque_head(&cp->link_ccbq, &np->free_ccbq);
- return (ccb_p) 0;
-}
-
-/*==========================================================
-**
-**
-** Release one control block
-**
-**
-**==========================================================
-*/
-
-static void ncr_free_ccb (ncb_p np, ccb_p cp)
-{
- tcb_p tp = &np->target[cp->target];
- lcb_p lp = ncr_lp(np, tp, cp->lun);
-
- if (DEBUG_FLAGS & DEBUG_TAGS) {
- PRINT_LUN(np, cp->target, cp->lun);
- printk ("ccb @%p freeing tag %d.\n", cp, cp->tag);
- }
-
- /*
- ** If lun control block available, make available
- ** the task slot and the tag if any.
- ** Decrement counters.
- */
- if (lp) {
- if (cp->tag != NO_TAG) {
- lp->cb_tags[lp->if_tag++] = cp->tag;
- if (lp->if_tag == MAX_TAGS)
- lp->if_tag = 0;
- --lp->tags_sum[cp->tags_si];
- lp->tasktbl[cp->tag] = cpu_to_scr(np->p_bad_i_t_l_q);
- } else {
- lp->tasktbl[0] = cpu_to_scr(np->p_bad_i_t_l);
- }
- --lp->busyccbs;
- if (cp->queued) {
- --lp->queuedccbs;
- }
- }
-
- /*
- ** Make this CCB available.
- */
- xpt_remque(&cp->link_ccbq);
- xpt_insque_head(&cp->link_ccbq, &np->free_ccbq);
- cp -> host_status = HS_IDLE;
- cp -> queued = 0;
-}
-
-/*------------------------------------------------------------------------
-** Allocate a CCB and initialize its fixed part.
-**------------------------------------------------------------------------
-**------------------------------------------------------------------------
-*/
-static ccb_p ncr_alloc_ccb(ncb_p np)
-{
- ccb_p cp = 0;
- int hcode;
-
- /*
- ** Allocate memory for this CCB.
- */
- cp = m_calloc_dma(sizeof(struct ccb), "CCB");
- if (!cp)
- return 0;
-
- /*
- ** Count it and initialyze it.
- */
- np->actccbs++;
-
- /*
- ** Remember virtual and bus address of this ccb.
- */
- cp->p_ccb = vtobus(cp);
-
- /*
- ** Insert this ccb into the hashed list.
- */
- hcode = CCB_HASH_CODE(cp->p_ccb);
- cp->link_ccbh = np->ccbh[hcode];
- np->ccbh[hcode] = cp;
-
- /*
- ** Initialyze the start and restart actions.
- */
- cp->phys.header.go.start = cpu_to_scr(NCB_SCRIPT_PHYS (np, idle));
- cp->phys.header.go.restart = cpu_to_scr(NCB_SCRIPTH_PHYS(np,bad_i_t_l));
-
- /*
- ** Initilialyze some other fields.
- */
- cp->phys.smsg_ext.addr = cpu_to_scr(NCB_PHYS(np, msgin[2]));
-
- /*
- ** Chain into wakeup list and free ccb queue.
- */
- cp->link_ccb = np->ccbc;
- np->ccbc = cp;
-
- xpt_insque_head(&cp->link_ccbq, &np->free_ccbq);
-
- return cp;
-}
-
-/*------------------------------------------------------------------------
-** Look up a CCB from a DSA value.
-**------------------------------------------------------------------------
-**------------------------------------------------------------------------
-*/
-static ccb_p ncr_ccb_from_dsa(ncb_p np, u_long dsa)
-{
- int hcode;
- ccb_p cp;
-
- hcode = CCB_HASH_CODE(dsa);
- cp = np->ccbh[hcode];
- while (cp) {
- if (cp->p_ccb == dsa)
- break;
- cp = cp->link_ccbh;
- }
-
- return cp;
-}
-
-/*==========================================================
-**
-**
-** Allocation of resources for Targets/Luns/Tags.
-**
-**
-**==========================================================
-*/
-
-
-/*------------------------------------------------------------------------
-** Target control block initialisation.
-**------------------------------------------------------------------------
-** This data structure is fully initialized after a SCSI command
-** has been successfully completed for this target.
-**------------------------------------------------------------------------
-*/
-static void ncr_init_tcb (ncb_p np, u_char tn)
-{
- /*
- ** Check some alignments required by the chip.
- */
- assert (( (offsetof(struct ncr_reg, nc_sxfer) ^
- offsetof(struct tcb , sval )) &3) == 0);
- assert (( (offsetof(struct ncr_reg, nc_scntl3) ^
- offsetof(struct tcb , wval )) &3) == 0);
- if ((np->device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (np->device_id == PCI_DEVICE_ID_LSI_53C1010_66)){
- assert (( (offsetof(struct ncr_reg, nc_scntl4) ^
- offsetof(struct tcb , uval )) &3) == 0);
- }
-}
-
-/*------------------------------------------------------------------------
-** Lun control block allocation and initialization.
-**------------------------------------------------------------------------
-** This data structure is allocated and initialized after a SCSI
-** command has been successfully completed for this target/lun.
-**------------------------------------------------------------------------
-*/
-static lcb_p ncr_alloc_lcb (ncb_p np, u_char tn, u_char ln)
-{
- tcb_p tp = &np->target[tn];
- lcb_p lp = ncr_lp(np, tp, ln);
-
- /*
- ** Already done, return.
- */
- if (lp)
- return lp;
-
- /*
- ** Initialize the target control block if not yet.
- */
- ncr_init_tcb(np, tn);
-
- /*
- ** Allocate the lcb bus address array.
- ** Compute the bus address of this table.
- */
- if (ln && !tp->luntbl) {
- int i;
-
- tp->luntbl = m_calloc_dma(256, "LUNTBL");
- if (!tp->luntbl)
- goto fail;
- for (i = 0 ; i < 64 ; i++)
- tp->luntbl[i] = cpu_to_scr(NCB_PHYS(np, resel_badlun));
- tp->b_luntbl = cpu_to_scr(vtobus(tp->luntbl));
- }
-
- /*
- ** Allocate the table of pointers for LUN(s) > 0, if needed.
- */
- if (ln && !tp->lmp) {
- tp->lmp = m_calloc(MAX_LUN * sizeof(lcb_p), "LMP");
- if (!tp->lmp)
- goto fail;
- }
-
- /*
- ** Allocate the lcb.
- ** Make it available to the chip.
- */
- lp = m_calloc_dma(sizeof(struct lcb), "LCB");
- if (!lp)
- goto fail;
- if (ln) {
- tp->lmp[ln] = lp;
- tp->luntbl[ln] = cpu_to_scr(vtobus(lp));
- }
- else {
- tp->l0p = lp;
- tp->b_lun0 = cpu_to_scr(vtobus(lp));
- }
-
- /*
- ** Initialize the CCB queue headers.
- */
- xpt_que_init(&lp->busy_ccbq);
- xpt_que_init(&lp->wait_ccbq);
-
- /*
- ** Set max CCBs to 1 and use the default task array
- ** by default.
- */
- lp->maxnxs = 1;
- lp->tasktbl = &lp->tasktbl_0;
- lp->b_tasktbl = cpu_to_scr(vtobus(lp->tasktbl));
- lp->tasktbl[0] = cpu_to_scr(np->p_notask);
- lp->resel_task = cpu_to_scr(NCB_SCRIPT_PHYS(np, resel_notag));
-
- /*
- ** Initialize command queuing control.
- */
- lp->busyccbs = 1;
- lp->queuedccbs = 1;
- lp->queuedepth = 1;
-fail:
- return lp;
-}
-
-
-/*------------------------------------------------------------------------
-** Lun control block setup on INQUIRY data received.
-**------------------------------------------------------------------------
-** We only support WIDE, SYNC for targets and CMDQ for logical units.
-** This setup is done on each INQUIRY since we are expecting user
-** will play with CHANGE DEFINITION commands. :-)
-**------------------------------------------------------------------------
-*/
-static lcb_p ncr_setup_lcb (ncb_p np, u_char tn, u_char ln, u_char *inq_data)
-{
- tcb_p tp = &np->target[tn];
- lcb_p lp = ncr_lp(np, tp, ln);
- u_char inq_byte7;
- int i;
-
- /*
- ** If no lcb, try to allocate it.
- */
- if (!lp && !(lp = ncr_alloc_lcb(np, tn, ln)))
- goto fail;
-
-#if 0 /* No more used. Left here as provision */
- /*
- ** Get device quirks.
- */
- tp->quirks = 0;
- if (tp->quirks && bootverbose) {
- PRINT_LUN(np, tn, ln);
- printk ("quirks=%x.\n", tp->quirks);
- }
-#endif
-
- /*
- ** Evaluate trustable target/unit capabilities.
- ** We only believe device version >= SCSI-2 that
- ** use appropriate response data format (2).
- ** But it seems that some CCS devices also
- ** support SYNC and I donnot want to frustrate
- ** anybody. ;-)
- */
- inq_byte7 = 0;
- if ((inq_data[2] & 0x7) >= 2 && (inq_data[3] & 0xf) == 2)
- inq_byte7 = inq_data[7];
- else if ((inq_data[2] & 0x7) == 1 && (inq_data[3] & 0xf) == 1)
- inq_byte7 = INQ7_SYNC;
-
- /*
- ** Throw away announced LUN capabilities if we are told
- ** that there is no real device supported by the logical unit.
- */
- if ((inq_data[0] & 0xe0) > 0x20 || (inq_data[0] & 0x1f) == 0x1f)
- inq_byte7 &= (INQ7_SYNC | INQ7_WIDE16);
-
- /*
- ** If user is wanting SYNC, force this feature.
- */
- if (driver_setup.force_sync_nego)
- inq_byte7 |= INQ7_SYNC;
-
- /*
- ** Prepare negotiation if SIP capabilities have changed.
- */
- tp->inq_done = 1;
- if ((inq_byte7 ^ tp->inq_byte7) & (INQ7_SYNC | INQ7_WIDE16)) {
- tp->inq_byte7 = inq_byte7;
- ncr_negotiate(np, tp);
- }
-
- /*
- ** If unit supports tagged commands, allocate and
- ** initialyze the task table if not yet.
- */
- if ((inq_byte7 & INQ7_QUEUE) && lp->tasktbl == &lp->tasktbl_0) {
- lp->tasktbl = m_calloc_dma(MAX_TASKS*4, "TASKTBL");
- if (!lp->tasktbl) {
- lp->tasktbl = &lp->tasktbl_0;
- goto fail;
- }
- lp->b_tasktbl = cpu_to_scr(vtobus(lp->tasktbl));
- for (i = 0 ; i < MAX_TASKS ; i++)
- lp->tasktbl[i] = cpu_to_scr(np->p_notask);
-
- lp->cb_tags = m_calloc(MAX_TAGS, "CB_TAGS");
- if (!lp->cb_tags)
- goto fail;
- for (i = 0 ; i < MAX_TAGS ; i++)
- lp->cb_tags[i] = i;
-
- lp->maxnxs = MAX_TAGS;
- lp->tags_stime = ktime_get(3*HZ);
- }
-
- /*
- ** Adjust tagged queueing status if needed.
- */
- if ((inq_byte7 ^ lp->inq_byte7) & INQ7_QUEUE) {
- lp->inq_byte7 = inq_byte7;
- lp->numtags = lp->maxtags;
- ncr_setup_tags (np, tn, ln);
- }
-
-fail:
- return lp;
-}
-
-/*==========================================================
-**
-**
-** Build Scatter Gather Block
-**
-**
-**==========================================================
-**
-** The transfer area may be scattered among
-** several non adjacent physical pages.
-**
-** We may use MAX_SCATTER blocks.
-**
-**----------------------------------------------------------
-*/
-
-/*
-** We try to reduce the number of interrupts caused
-** by unexpected phase changes due to disconnects.
-** A typical harddisk may disconnect before ANY block.
-** If we wanted to avoid unexpected phase changes at all
-** we had to use a break point every 512 bytes.
-** Of course the number of scatter/gather blocks is
-** limited.
-** Under Linux, the scatter/gatter blocks are provided by
-** the generic driver. We just have to copy addresses and
-** sizes to the data segment array.
-*/
-
-/*
-** For 64 bit systems, we use the 8 upper bits of the size field
-** to provide bus address bits 32-39 to the SCRIPTS processor.
-** This allows the 895A and 896 to address up to 1 TB of memory.
-** For 32 bit chips on 64 bit systems, we must be provided with
-** memory addresses that fit into the first 32 bit bus address
-** range and so, this does not matter and we expect an error from
-** the chip if this ever happen.
-**
-** We use a separate function for the case Linux does not provide
-** a scatter list in order to allow better code optimization
-** for the case we have a scatter list (BTW, for now this just wastes
-** about 40 bytes of code for x86, but my guess is that the scatter
-** code will get more complex later).
-*/
-
-#define SCATTER_ONE(data, badd, len) \
- (data)->addr = cpu_to_scr(badd); \
- (data)->size = cpu_to_scr((((badd) >> 8) & 0xff000000) + len);
-
-#define CROSS_16MB(p, n) (((((u_long) p) + n - 1) ^ ((u_long) p)) & ~0xffffff)
-
-static int ncr_scatter_no_sglist(ncb_p np, ccb_p cp, Scsi_Cmnd *cmd)
-{
- struct scr_tblmove *data = &cp->phys.data[MAX_SCATTER-1];
- int segment;
-
- cp->data_len = cmd->request_bufflen;
-
- if (cmd->request_bufflen) {
- dma_addr_t baddr = map_scsi_single_data(np, cmd);
-
- SCATTER_ONE(data, baddr, cmd->request_bufflen);
- if (CROSS_16MB(baddr, cmd->request_bufflen)) {
- cp->host_flags |= HF_PM_TO_C;
-#ifdef DEBUG_896R1
-printk("He! we are crossing a 16 MB boundary (0x%lx, 0x%x)\n",
- baddr, cmd->request_bufflen);
-#endif
- }
- segment = 1;
- }
- else
- segment = 0;
-
- return segment;
-}
-
-/*
-** DEL 472 - 53C896 Rev 1 - Part Number 609-0393055 - ITEM 5.
-**
-** We disable data phase mismatch handling from SCRIPTS for data
-** transfers that contains scatter/gather entries that cross
-** a 16 MB boundary.
-** We use a different scatter function for 896 rev. 1 that needs
-** such a work-around. Doing so, we do not affect performance for
-** other chips.
-** This problem should not be triggered for disk IOs under Linux,
-** since such IOs are performed using pages and buffers that are
-** nicely power-of-two sized and aligned. But, since this may change
-** at any time, a work-around was required.
-*/
-static int ncr_scatter_896R1(ncb_p np, ccb_p cp, Scsi_Cmnd *cmd)
-{
- int segn;
- int use_sg = (int) cmd->use_sg;
-
- cp->data_len = 0;
-
- if (!use_sg)
- segn = ncr_scatter_no_sglist(np, cp, cmd);
- else {
- struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
- struct scr_tblmove *data;
-
- use_sg = map_scsi_sg_data(np, cmd);
- if (use_sg > MAX_SCATTER) {
- unmap_scsi_data(np, cmd);
- return -1;
- }
-
- data = &cp->phys.data[MAX_SCATTER - use_sg];
-
- for (segn = 0; segn < use_sg; segn++) {
- dma_addr_t baddr = scsi_sg_dma_address(&scatter[segn]);
- unsigned int len = scsi_sg_dma_len(&scatter[segn]);
-
- SCATTER_ONE(&data[segn],
- baddr,
- len);
- if (CROSS_16MB(baddr, scatter[segn].length)) {
- cp->host_flags |= HF_PM_TO_C;
-#ifdef DEBUG_896R1
-printk("He! we are crossing a 16 MB boundary (0x%lx, 0x%x)\n",
- baddr, scatter[segn].length);
-#endif
- }
- cp->data_len += len;
- }
- }
-
- return segn;
-}
-
-static int ncr_scatter(ncb_p np, ccb_p cp, Scsi_Cmnd *cmd)
-{
- int segment;
- int use_sg = (int) cmd->use_sg;
-
- cp->data_len = 0;
-
- if (!use_sg)
- segment = ncr_scatter_no_sglist(np, cp, cmd);
- else {
- struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
- struct scr_tblmove *data;
-
- use_sg = map_scsi_sg_data(np, cmd);
- if (use_sg > MAX_SCATTER) {
- unmap_scsi_data(np, cmd);
- return -1;
- }
- data = &cp->phys.data[MAX_SCATTER - use_sg];
-
- for (segment = 0; segment < use_sg; segment++) {
- dma_addr_t baddr = scsi_sg_dma_address(&scatter[segment]);
- unsigned int len = scsi_sg_dma_len(&scatter[segment]);
-
- SCATTER_ONE(&data[segment],
- baddr,
- len);
- cp->data_len += len;
- }
- }
-
- return segment;
-}
-
-/*==========================================================
-**
-**
-** Test the pci bus snoop logic :-(
-**
-** Has to be called with interrupts disabled.
-**
-**
-**==========================================================
-*/
-
-#ifndef SCSI_NCR_IOMAPPED
-static int __init ncr_regtest (struct ncb* np)
-{
- register volatile u_int32 data;
- /*
- ** ncr registers may NOT be cached.
- ** write 0xffffffff to a read only register area,
- ** and try to read it back.
- */
- data = 0xffffffff;
- OUTL_OFF(offsetof(struct ncr_reg, nc_dstat), data);
- data = INL_OFF(offsetof(struct ncr_reg, nc_dstat));
-#if 1
- if (data == 0xffffffff) {
-#else
- if ((data & 0xe2f0fffd) != 0x02000080) {
-#endif
- printk ("CACHE TEST FAILED: reg dstat-sstat2 readback %x.\n",
- (unsigned) data);
- return (0x10);
- };
- return (0);
-}
-#endif
-
-static int __init ncr_snooptest (struct ncb* np)
-{
- u_int32 ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc;
- u_char dstat;
- int i, err=0;
-#ifndef SCSI_NCR_IOMAPPED
- if (np->reg) {
- err |= ncr_regtest (np);
- if (err) return (err);
- }
-#endif
-restart_test:
- /*
- ** Enable Master Parity Checking as we intend
- ** to enable it for normal operations.
- */
- OUTB (nc_ctest4, (np->rv_ctest4 & MPEE));
- /*
- ** init
- */
- pc = NCB_SCRIPTH0_PHYS (np, snooptest);
- host_wr = 1;
- ncr_wr = 2;
- /*
- ** Set memory and register.
- */
- np->ncr_cache = cpu_to_scr(host_wr);
- OUTL (nc_temp, ncr_wr);
- /*
- ** Start script (exchange values)
- */
- OUTL (nc_dsa, np->p_ncb);
- OUTL_DSP (pc);
- /*
- ** Wait 'til done (with timeout)
- */
- for (i=0; i<NCR_SNOOP_TIMEOUT; i++)
- if (INB(nc_istat) & (INTF|SIP|DIP))
- break;
- if (i>=NCR_SNOOP_TIMEOUT) {
- printk ("CACHE TEST FAILED: timeout.\n");
- return (0x20);
- };
- /*
- ** Check for fatal DMA errors.
- */
- dstat = INB (nc_dstat);
-#if 1 /* Band aiding for broken hardwares that fail PCI parity */
- if ((dstat & MDPE) && (np->rv_ctest4 & MPEE)) {
- printk ("%s: PCI DATA PARITY ERROR DETECTED - "
- "DISABLING MASTER DATA PARITY CHECKING.\n",
- ncr_name(np));
- np->rv_ctest4 &= ~MPEE;
- goto restart_test;
- }
-#endif
- if (dstat & (MDPE|BF|IID)) {
- printk ("CACHE TEST FAILED: DMA error (dstat=0x%02x).", dstat);
- return (0x80);
- }
- /*
- ** Save termination position.
- */
- pc = INL (nc_dsp);
- /*
- ** Read memory and register.
- */
- host_rd = scr_to_cpu(np->ncr_cache);
- ncr_rd = INL (nc_scratcha);
- ncr_bk = INL (nc_temp);
- /*
- ** Check termination position.
- */
- if (pc != NCB_SCRIPTH0_PHYS (np, snoopend)+8) {
- printk ("CACHE TEST FAILED: script execution failed.\n");
- printk ("start=%08lx, pc=%08lx, end=%08lx\n",
- (u_long) NCB_SCRIPTH0_PHYS (np, snooptest), (u_long) pc,
- (u_long) NCB_SCRIPTH0_PHYS (np, snoopend) +8);
- return (0x40);
- };
- /*
- ** Show results.
- */
- if (host_wr != ncr_rd) {
- printk ("CACHE TEST FAILED: host wrote %d, ncr read %d.\n",
- (int) host_wr, (int) ncr_rd);
- err |= 1;
- };
- if (host_rd != ncr_wr) {
- printk ("CACHE TEST FAILED: ncr wrote %d, host read %d.\n",
- (int) ncr_wr, (int) host_rd);
- err |= 2;
- };
- if (ncr_bk != ncr_wr) {
- printk ("CACHE TEST FAILED: ncr wrote %d, read back %d.\n",
- (int) ncr_wr, (int) ncr_bk);
- err |= 4;
- };
- return (err);
-}
-
-/*==========================================================
-**
-** Determine the ncr's clock frequency.
-** This is essential for the negotiation
-** of the synchronous transfer rate.
-**
-**==========================================================
-**
-** Note: we have to return the correct value.
-** THERE IS NO SAFE DEFAULT VALUE.
-**
-** Most NCR/SYMBIOS boards are delivered with a 40 Mhz clock.
-** 53C860 and 53C875 rev. 1 support fast20 transfers but
-** do not have a clock doubler and so are provided with a
-** 80 MHz clock. All other fast20 boards incorporate a doubler
-** and so should be delivered with a 40 MHz clock.
-** The recent fast40 chips (895/896/895A) and the
-** fast80 chip (C1010) use a 40 Mhz base clock
-** and provide a clock quadrupler (160 Mhz). The code below
-** tries to deal as cleverly as possible with all this stuff.
-**
-**----------------------------------------------------------
-*/
-
-/*
- * Select NCR SCSI clock frequency
- */
-static void ncr_selectclock(ncb_p np, u_char scntl3)
-{
- if (np->multiplier < 2) {
- OUTB(nc_scntl3, scntl3);
- return;
- }
-
- if (bootverbose >= 2)
- printk ("%s: enabling clock multiplier\n", ncr_name(np));
-
- OUTB(nc_stest1, DBLEN); /* Enable clock multiplier */
-
- if ( (np->device_id != PCI_DEVICE_ID_LSI_53C1010) &&
- (np->device_id != PCI_DEVICE_ID_LSI_53C1010_66) &&
- (np->multiplier > 2)) {
- int i = 20; /* Poll bit 5 of stest4 for quadrupler */
- while (!(INB(nc_stest4) & LCKFRQ) && --i > 0)
- UDELAY (20);
- if (!i)
- printk("%s: the chip cannot lock the frequency\n",
- ncr_name(np));
-
- } else /* Wait 120 micro-seconds for multiplier*/
- UDELAY (120);
-
- OUTB(nc_stest3, HSC); /* Halt the scsi clock */
- OUTB(nc_scntl3, scntl3);
- OUTB(nc_stest1, (DBLEN|DBLSEL));/* Select clock multiplier */
- OUTB(nc_stest3, 0x00); /* Restart scsi clock */
-}
-
-
-/*
- * calculate NCR SCSI clock frequency (in KHz)
- */
-static unsigned __init ncrgetfreq (ncb_p np, int gen)
-{
- unsigned int ms = 0;
- unsigned int f;
- int count;
-
- /*
- * Measure GEN timer delay in order
- * to calculate SCSI clock frequency
- *
- * This code will never execute too
- * many loop iterations (if DELAY is
- * reasonably correct). It could get
- * too low a delay (too high a freq.)
- * if the CPU is slow executing the
- * loop for some reason (an NMI, for
- * example). For this reason we will
- * if multiple measurements are to be
- * performed trust the higher delay
- * (lower frequency returned).
- */
- OUTW (nc_sien , 0x0);/* mask all scsi interrupts */
- /* enable general purpose timer */
- (void) INW (nc_sist); /* clear pending scsi interrupt */
- OUTB (nc_dien , 0); /* mask all dma interrupts */
- (void) INW (nc_sist); /* another one, just to be sure :) */
- OUTB (nc_scntl3, 4); /* set pre-scaler to divide by 3 */
- OUTB (nc_stime1, 0); /* disable general purpose timer */
- OUTB (nc_stime1, gen); /* set to nominal delay of 1<<gen * 125us */
- /* Temporary fix for udelay issue with Alpha
- platform */
- while (!(INW(nc_sist) & GEN) && ms++ < 100000) {
- /* count 1ms */
- for (count = 0; count < 10; count++)
- UDELAY (100);
- }
- OUTB (nc_stime1, 0); /* disable general purpose timer */
- /*
- * set prescaler to divide by whatever 0 means
- * 0 ought to choose divide by 2, but appears
- * to set divide by 3.5 mode in my 53c810 ...
- */
- OUTB (nc_scntl3, 0);
-
- /*
- * adjust for prescaler, and convert into KHz
- * scale values derived empirically.
- */
- f = ms ? ((1 << gen) * 4340) / ms : 0;
-
- if (bootverbose >= 2)
- printk ("%s: Delay (GEN=%d): %u msec, %u KHz\n",
- ncr_name(np), gen, ms, f);
-
- return f;
-}
-
-static unsigned __init ncr_getfreq (ncb_p np)
-{
- u_int f1, f2;
- int gen = 11;
-
- (void) ncrgetfreq (np, gen); /* throw away first result */
- f1 = ncrgetfreq (np, gen);
- f2 = ncrgetfreq (np, gen);
- if (f1 > f2) f1 = f2; /* trust lower result */
- return f1;
-}
-
-/*
- * Get/probe NCR SCSI clock frequency
- */
-static void __init ncr_getclock (ncb_p np, int mult)
-{
- unsigned char scntl3 = np->sv_scntl3;
- unsigned char stest1 = np->sv_stest1;
- unsigned f1;
-
- np->multiplier = 1;
- f1 = 40000;
-
- /*
- ** True with 875/895/896/895A with clock multiplier selected
- */
- if (mult > 1 && (stest1 & (DBLEN+DBLSEL)) == DBLEN+DBLSEL) {
- if (bootverbose >= 2)
- printk ("%s: clock multiplier found\n", ncr_name(np));
- np->multiplier = mult;
- }
-
- /*
- ** If multiplier not found or scntl3 not 7,5,3,
- ** reset chip and get frequency from general purpose timer.
- ** Otherwise trust scntl3 BIOS setting.
- */
- if (np->multiplier != mult || (scntl3 & 7) < 3 || !(scntl3 & 1)) {
- OUTB (nc_stest1, 0); /* make sure doubler is OFF */
- f1 = ncr_getfreq (np);
-
- if (bootverbose)
- printk ("%s: NCR clock is %uKHz\n", ncr_name(np), f1);
-
- if (f1 < 55000) f1 = 40000;
- else f1 = 80000;
-
- /*
- ** Suggest to also check the PCI clock frequency
- ** to make sure our frequency calculation algorithm
- ** is not too biased.
- */
- if (np->features & FE_66MHZ) {
- np->pciclock_min = (66000*55+80-1)/80;
- np->pciclock_max = (66000*55)/40;
- }
- else {
- np->pciclock_min = (33000*55+80-1)/80;
- np->pciclock_max = (33000*55)/40;
- }
-
- if (f1 == 40000 && mult > 1) {
- if (bootverbose >= 2)
- printk ("%s: clock multiplier assumed\n", ncr_name(np));
- np->multiplier = mult;
- }
- } else {
- if ((scntl3 & 7) == 3) f1 = 40000;
- else if ((scntl3 & 7) == 5) f1 = 80000;
- else f1 = 160000;
-
- f1 /= np->multiplier;
- }
-
- /*
- ** Compute controller synchronous parameters.
- */
- f1 *= np->multiplier;
- np->clock_khz = f1;
-}
-
-/*
- * Get/probe PCI clock frequency
- */
-static u_int __init ncr_getpciclock (ncb_p np)
-{
- static u_int f;
-
- OUTB (nc_stest1, SCLK); /* Use the PCI clock as SCSI clock */
- f = ncr_getfreq (np);
- OUTB (nc_stest1, 0);
-
- return f;
-}
-
-/*===================== LINUX ENTRY POINTS SECTION ==========================*/
-
-#ifndef uchar
-#define uchar unsigned char
-#endif
-
-#ifndef ushort
-#define ushort unsigned short
-#endif
-
-#ifndef ulong
-#define ulong unsigned long
-#endif
-
-/* ---------------------------------------------------------------------
-**
-** Driver setup from the boot command line
-**
-** ---------------------------------------------------------------------
-*/
-
-#ifdef MODULE
-#define ARG_SEP ' '
-#else
-#define ARG_SEP ','
-#endif
-
-#define OPT_TAGS 1
-#define OPT_MASTER_PARITY 2
-#define OPT_SCSI_PARITY 3
-#define OPT_DISCONNECTION 4
-#define OPT_SPECIAL_FEATURES 5
-#define OPT_RESERVED_1 6
-#define OPT_FORCE_SYNC_NEGO 7
-#define OPT_REVERSE_PROBE 8
-#define OPT_DEFAULT_SYNC 9
-#define OPT_VERBOSE 10
-#define OPT_DEBUG 11
-#define OPT_BURST_MAX 12
-#define OPT_LED_PIN 13
-#define OPT_MAX_WIDE 14
-#define OPT_SETTLE_DELAY 15
-#define OPT_DIFF_SUPPORT 16
-#define OPT_IRQM 17
-#define OPT_PCI_FIX_UP 18
-#define OPT_BUS_CHECK 19
-#define OPT_OPTIMIZE 20
-#define OPT_RECOVERY 21
-#define OPT_SAFE_SETUP 22
-#define OPT_USE_NVRAM 23
-#define OPT_EXCLUDE 24
-#define OPT_HOST_ID 25
-
-#ifdef SCSI_NCR_IARB_SUPPORT
-#define OPT_IARB 26
-#endif
-
-static char setup_token[] __initdata =
- "tags:" "mpar:"
- "spar:" "disc:"
- "specf:" "_rsvd1:"
- "fsn:" "revprob:"
- "sync:" "verb:"
- "debug:" "burst:"
- "led:" "wide:"
- "settle:" "diff:"
- "irqm:" "pcifix:"
- "buschk:" "optim:"
- "recovery:"
- "safe:" "nvram:"
- "excl:" "hostid:"
-#ifdef SCSI_NCR_IARB_SUPPORT
- "iarb:"
-#endif
- ; /* DONNOT REMOVE THIS ';' */
-
-#ifdef MODULE
-#define ARG_SEP ' '
-#else
-#define ARG_SEP ','
-#endif
-
-static int __init get_setup_token(char *p)
-{
- char *cur = setup_token;
- char *pc;
- int i = 0;
-
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- ++pc;
- ++i;
- if (!strncmp(p, cur, pc - cur))
- return i;
- cur = pc;
- }
- return 0;
-}
-
-
-int __init sym53c8xx_setup(char *str)
-{
-#ifdef SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
- char *cur = str;
- char *pc, *pv;
- unsigned long val;
- int i, c;
- int xi = 0;
-
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- char *pe;
-
- val = 0;
- pv = pc;
- c = *++pv;
-
- if (c == 'n')
- val = 0;
- else if (c == 'y')
- val = 1;
- else
- val = (int) simple_strtoul(pv, &pe, 0);
-
- switch (get_setup_token(cur)) {
- case OPT_TAGS:
- driver_setup.default_tags = val;
- if (pe && *pe == '/') {
- i = 0;
- while (*pe && *pe != ARG_SEP &&
- i < sizeof(driver_setup.tag_ctrl)-1) {
- driver_setup.tag_ctrl[i++] = *pe++;
- }
- driver_setup.tag_ctrl[i] = '\0';
- }
- break;
- case OPT_MASTER_PARITY:
- driver_setup.master_parity = val;
- break;
- case OPT_SCSI_PARITY:
- driver_setup.scsi_parity = val;
- break;
- case OPT_DISCONNECTION:
- driver_setup.disconnection = val;
- break;
- case OPT_SPECIAL_FEATURES:
- driver_setup.special_features = val;
- break;
- case OPT_FORCE_SYNC_NEGO:
- driver_setup.force_sync_nego = val;
- break;
- case OPT_REVERSE_PROBE:
- driver_setup.reverse_probe = val;
- break;
- case OPT_DEFAULT_SYNC:
- driver_setup.default_sync = val;
- break;
- case OPT_VERBOSE:
- driver_setup.verbose = val;
- break;
- case OPT_DEBUG:
- driver_setup.debug = val;
- break;
- case OPT_BURST_MAX:
- driver_setup.burst_max = val;
- break;
- case OPT_LED_PIN:
- driver_setup.led_pin = val;
- break;
- case OPT_MAX_WIDE:
- driver_setup.max_wide = val? 1:0;
- break;
- case OPT_SETTLE_DELAY:
- driver_setup.settle_delay = val;
- break;
- case OPT_DIFF_SUPPORT:
- driver_setup.diff_support = val;
- break;
- case OPT_IRQM:
- driver_setup.irqm = val;
- break;
- case OPT_PCI_FIX_UP:
- driver_setup.pci_fix_up = val;
- break;
- case OPT_BUS_CHECK:
- driver_setup.bus_check = val;
- break;
- case OPT_OPTIMIZE:
- driver_setup.optimize = val;
- break;
- case OPT_RECOVERY:
- driver_setup.recovery = val;
- break;
- case OPT_USE_NVRAM:
- driver_setup.use_nvram = val;
- break;
- case OPT_SAFE_SETUP:
- memcpy(&driver_setup, &driver_safe_setup,
- sizeof(driver_setup));
- break;
- case OPT_EXCLUDE:
- if (xi < SCSI_NCR_MAX_EXCLUDES)
- driver_setup.excludes[xi++] = val;
- break;
- case OPT_HOST_ID:
- driver_setup.host_id = val;
- break;
-#ifdef SCSI_NCR_IARB_SUPPORT
- case OPT_IARB:
- driver_setup.iarb = val;
- break;
-#endif
- default:
- printk("sym53c8xx_setup: unexpected boot option '%.*s' ignored\n", (int)(pc-cur+1), cur);
- break;
- }
-
- if ((cur = strchr(cur, ARG_SEP)) != NULL)
- ++cur;
- }
-#endif /* SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT */
- return 1;
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,13)
-#ifndef MODULE
-__setup("sym53c8xx=", sym53c8xx_setup);
-#endif
-#endif
-
-static int
-sym53c8xx_pci_init(Scsi_Host_Template *tpnt, pcidev_t pdev, ncr_device *device);
-
-/*
-** Linux entry point for SYM53C8XX devices detection routine.
-**
-** Called by the middle-level scsi drivers at initialization time,
-** or at module installation.
-**
-** Read the PCI configuration and try to attach each
-** detected NCR board.
-**
-** If NVRAM is present, try to attach boards according to
-** the used defined boot order.
-**
-** Returns the number of boards successfully attached.
-*/
-
-static void __init ncr_print_driver_setup(void)
-{
-#define YesNo(y) y ? 'y' : 'n'
- printk (NAME53C8XX ": setup=disc:%c,specf:%d,tags:%d,sync:%d,"
- "burst:%d,wide:%c,diff:%d,revprob:%c,buschk:0x%x\n",
- YesNo(driver_setup.disconnection),
- driver_setup.special_features,
- driver_setup.default_tags,
- driver_setup.default_sync,
- driver_setup.burst_max,
- YesNo(driver_setup.max_wide),
- driver_setup.diff_support,
- YesNo(driver_setup.reverse_probe),
- driver_setup.bus_check);
-
- printk (NAME53C8XX ": setup=mpar:%c,spar:%c,fsn=%c,verb:%d,debug:0x%x,"
- "led:%c,settle:%d,irqm:0x%x,nvram:0x%x,pcifix:0x%x\n",
- YesNo(driver_setup.master_parity),
- YesNo(driver_setup.scsi_parity),
- YesNo(driver_setup.force_sync_nego),
- driver_setup.verbose,
- driver_setup.debug,
- YesNo(driver_setup.led_pin),
- driver_setup.settle_delay,
- driver_setup.irqm,
- driver_setup.use_nvram,
- driver_setup.pci_fix_up);
-#undef YesNo
-}
-
-/*===================================================================
-** SYM53C8XX devices description table and chip ids list.
-**===================================================================
-*/
-
-static ncr_chip ncr_chip_table[] __initdata = SCSI_NCR_CHIP_TABLE;
-static ushort ncr_chip_ids[] __initdata = SCSI_NCR_CHIP_IDS;
-
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
-/*===================================================================
-** Detect all NCR PQS/PDS boards and keep track of their bus nr.
-**
-** The NCR PQS or PDS card is constructed as a DEC bridge
-** behind which sit a proprietary NCR memory controller and
-** four or two 53c875s as separate devices. In its usual mode
-** of operation, the 875s are slaved to the memory controller
-** for all transfers. We can tell if an 875 is part of a
-** PQS/PDS or not since if it is, it will be on the same bus
-** as the memory controller. To operate with the Linux
-** driver, the memory controller is disabled and the 875s
-** freed to function independently. The only wrinkle is that
-** the preset SCSI ID (which may be zero) must be read in from
-** a special configuration space register of the 875
-**===================================================================
-*/
-#define SCSI_NCR_MAX_PQS_BUS 16
-static int pqs_bus[SCSI_NCR_MAX_PQS_BUS] __initdata = { 0 };
-
-static void __init ncr_detect_pqs_pds(void)
-{
- short index;
- pcidev_t dev = PCIDEV_NULL;
-
- for(index=0; index < SCSI_NCR_MAX_PQS_BUS; index++) {
- u_char tmp;
-
- dev = pci_find_device(0x101a, 0x0009, dev);
- if (dev == PCIDEV_NULL) {
- pqs_bus[index] = -1;
- break;
- }
- printk(KERN_INFO NAME53C8XX ": NCR PQS/PDS memory controller detected on bus %d\n", PciBusNumber(dev));
- pci_read_config_byte(dev, 0x44, &tmp);
- /* bit 1: allow individual 875 configuration */
- tmp |= 0x2;
- pci_write_config_byte(dev, 0x44, tmp);
- pci_read_config_byte(dev, 0x45, &tmp);
- /* bit 2: drive individual 875 interrupts to the bus */
- tmp |= 0x4;
- pci_write_config_byte(dev, 0x45, tmp);
-
- pqs_bus[index] = PciBusNumber(dev);
- }
-}
-#endif /* SCSI_NCR_PQS_PDS_SUPPORT */
-
-/*===================================================================
-** Detect all 53c8xx hosts and then attach them.
-**
-** If we are using NVRAM, once all hosts are detected, we need to
-** check any NVRAM for boot order in case detect and boot order
-** differ and attach them using the order in the NVRAM.
-**
-** If no NVRAM is found or data appears invalid attach boards in
-** the order they are detected.
-**===================================================================
-*/
-int __init sym53c8xx_detect(Scsi_Host_Template *tpnt)
-{
- pcidev_t pcidev;
- int i, j, chips, hosts, count;
- int attach_count = 0;
- ncr_device *devtbl, *devp;
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_nvram nvram0, nvram, *nvp;
-#endif
-
- /*
- ** Initialize driver general stuff.
- */
-#ifdef SCSI_NCR_PROC_INFO_SUPPORT
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,27)
- tpnt->proc_dir = &proc_scsi_sym53c8xx;
-#else
- tpnt->proc_name = NAME53C8XX;
-#endif
- tpnt->proc_info = sym53c8xx_proc_info;
-#endif
-
-#if defined(SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT) && defined(MODULE)
-if (sym53c8xx)
- sym53c8xx_setup(sym53c8xx);
-#endif
-#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
- ncr_debug = driver_setup.debug;
-#endif
-
- if (initverbose >= 2)
- ncr_print_driver_setup();
-
- /*
- ** Allocate the device table since we donnot want to
- ** overflow the kernel stack.
- ** 1 x 4K PAGE is enough for more than 40 devices for i386.
- */
- devtbl = m_calloc(PAGE_SIZE, "devtbl");
- if (!devtbl)
- return 0;
-
- /*
- ** Detect all NCR PQS/PDS memory controllers.
- */
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- ncr_detect_pqs_pds();
-#endif
-
- /*
- ** Detect all 53c8xx hosts.
- ** Save the first Symbios NVRAM content if any
- ** for the boot order.
- */
- chips = sizeof(ncr_chip_ids) / sizeof(ncr_chip_ids[0]);
- hosts = PAGE_SIZE / sizeof(*devtbl);
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- nvp = (driver_setup.use_nvram & 0x1) ? &nvram0 : 0;
-#endif
- j = 0;
- count = 0;
- pcidev = PCIDEV_NULL;
- while (1) {
- char *msg = "";
- if (count >= hosts)
- break;
- if (j >= chips)
- break;
- i = driver_setup.reverse_probe ? chips - 1 - j : j;
- pcidev = pci_find_device(PCI_VENDOR_ID_NCR, ncr_chip_ids[i],
- pcidev);
- if (pcidev == PCIDEV_NULL) {
- ++j;
- continue;
- }
- if (pci_enable_device(pcidev)) /* @!*!$&*!%-*#;! */
- continue;
- /* Some HW as the HP LH4 may report twice PCI devices */
- for (i = 0; i < count ; i++) {
- if (devtbl[i].slot.bus == PciBusNumber(pcidev) &&
- devtbl[i].slot.device_fn == PciDeviceFn(pcidev))
- break;
- }
- if (i != count) /* Ignore this device if we already have it */
- continue;
- pci_set_master(pcidev);
- devp = &devtbl[count];
- devp->host_id = driver_setup.host_id;
- devp->attach_done = 0;
- if (sym53c8xx_pci_init(tpnt, pcidev, devp)) {
- continue;
- }
- ++count;
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (nvp) {
- ncr_get_nvram(devp, nvp);
- switch(nvp->type) {
- case SCSI_NCR_SYMBIOS_NVRAM:
- /*
- * Switch to the other nvram buffer, so that
- * nvram0 will contain the first Symbios
- * format NVRAM content with boot order.
- */
- nvp = &nvram;
- msg = "with Symbios NVRAM";
- break;
- case SCSI_NCR_TEKRAM_NVRAM:
- msg = "with Tekram NVRAM";
- break;
- }
- }
-#endif
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- if (devp->pqs_pds)
- msg = "(NCR PQS/PDS)";
-#endif
- printk(KERN_INFO NAME53C8XX ": 53c%s detected %s\n",
- devp->chip.name, msg);
- }
-
- /*
- ** If we have found a SYMBIOS NVRAM, use first the NVRAM boot
- ** sequence as device boot order.
- ** check devices in the boot record against devices detected.
- ** attach devices if we find a match. boot table records that
- ** do not match any detected devices will be ignored.
- ** devices that do not match any boot table will not be attached
- ** here but will attempt to be attached during the device table
- ** rescan.
- */
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (!nvp || nvram0.type != SCSI_NCR_SYMBIOS_NVRAM)
- goto next;
- for (i = 0; i < 4; i++) {
- Symbios_host *h = &nvram0.data.Symbios.host[i];
- for (j = 0 ; j < count ; j++) {
- devp = &devtbl[j];
- if (h->device_fn != devp->slot.device_fn ||
- h->bus_nr != devp->slot.bus ||
- h->device_id != devp->chip.device_id)
- continue;
- if (devp->attach_done)
- continue;
- if (h->flags & SYMBIOS_INIT_SCAN_AT_BOOT) {
- ncr_get_nvram(devp, nvp);
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- else if (!(driver_setup.use_nvram & 0x80))
- printk(KERN_INFO NAME53C8XX
- ": 53c%s state OFF thus not attached\n",
- devp->chip.name);
- else
- continue;
-
- devp->attach_done = 1;
- break;
- }
- }
-next:
-#endif
-
- /*
- ** Rescan device list to make sure all boards attached.
- ** Devices without boot records will not be attached yet
- ** so try to attach them here.
- */
- for (i= 0; i < count; i++) {
- devp = &devtbl[i];
- if (!devp->attach_done) {
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_get_nvram(devp, nvp);
-#endif
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- }
-
- m_free(devtbl, PAGE_SIZE, "devtbl");
-
- return attach_count;
-}
-
-/*===================================================================
-** Read and check the PCI configuration for any detected NCR
-** boards and save data for attaching after all boards have
-** been detected.
-**===================================================================
-*/
-static int __init
-sym53c8xx_pci_init(Scsi_Host_Template *tpnt, pcidev_t pdev, ncr_device *device)
-{
- u_short vendor_id, device_id, command, status_reg;
- u_char cache_line_size, latency_timer;
- u_char suggested_cache_line_size = 0;
- u_char pci_fix_up = driver_setup.pci_fix_up;
- u_char revision;
- u_int irq;
- u_long base, base_c, base_2, base_2_c, io_port;
- int i;
- ncr_chip *chip;
-
- printk(KERN_INFO NAME53C8XX ": at PCI bus %d, device %d, function %d\n",
- PciBusNumber(pdev),
- (int) (PciDeviceFn(pdev) & 0xf8) >> 3,
- (int) (PciDeviceFn(pdev) & 7));
-
- /*
- ** Read info from the PCI config space.
- ** pci_read_config_xxx() functions are assumed to be used for
- ** successfully detected PCI devices.
- */
- vendor_id = PciVendorId(pdev);
- device_id = PciDeviceId(pdev);
- irq = PciIrqLine(pdev);
-
- i = pci_get_base_address(pdev, 0, &io_port);
- io_port = pci_get_base_cookie(pdev, 0);
-
- base_c = pci_get_base_cookie(pdev, i);
- i = pci_get_base_address(pdev, i, &base);
-
- base_2_c = pci_get_base_cookie(pdev, i);
- (void) pci_get_base_address(pdev, i, &base_2);
-
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
- pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer);
- pci_read_config_word(pdev, PCI_STATUS, &status_reg);
-
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- /*
- ** Match the BUS number for PQS/PDS devices.
- ** Read the SCSI ID from a special register mapped
- ** into the configuration space of the individual
- ** 875s. This register is set up by the PQS bios
- */
- for(i = 0; i < SCSI_NCR_MAX_PQS_BUS && pqs_bus[i] != -1; i++) {
- u_char tmp;
- if (pqs_bus[i] == PciBusNumber(pdev)) {
- pci_read_config_byte(pdev, 0x84, &tmp);
- device->pqs_pds = 1;
- device->host_id = tmp;
- break;
- }
- }
-#endif /* SCSI_NCR_PQS_PDS_SUPPORT */
-
- /*
- ** If user excludes this chip, donnot initialize it.
- */
- for (i = 0 ; i < SCSI_NCR_MAX_EXCLUDES ; i++) {
- if (driver_setup.excludes[i] ==
- (io_port & PCI_BASE_ADDRESS_IO_MASK))
- return -1;
- }
- /*
- ** Check if the chip is supported
- */
- chip = 0;
- for (i = 0; i < sizeof(ncr_chip_table)/sizeof(ncr_chip_table[0]); i++) {
- if (device_id != ncr_chip_table[i].device_id)
- continue;
- if (revision > ncr_chip_table[i].revision_id)
- continue;
- if (!(ncr_chip_table[i].features & FE_LDSTR))
- break;
- chip = &device->chip;
- memcpy(chip, &ncr_chip_table[i], sizeof(*chip));
- chip->revision_id = revision;
- break;
- }
-
-#ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- /* Configure DMA attributes. For DAC capable boards, we can encode
- ** 32+8 bits for SCSI DMA data addresses with the extra bits used
- ** in the size field. We use normal 32-bit PCI addresses for
- ** descriptors.
- */
- if (chip && (chip->features & FE_DAC)) {
- if (pci_set_dma_mask(pdev, (u64) 0xffffffffff))
- chip->features &= ~FE_DAC_IN_USE;
- else
- chip->features |= FE_DAC_IN_USE;
- }
-
- if (chip && !(chip->features & FE_DAC_IN_USE)) {
- if (pci_set_dma_mask(pdev, (u64) 0xffffffff)) {
- printk(KERN_WARNING NAME53C8XX
- "32 BIT PCI BUS DMA ADDRESSING NOT SUPPORTED\n");
- return -1;
- }
- }
-#endif
-
- /*
- ** Ignore Symbios chips controlled by SISL RAID controller.
- ** This controller sets value 0x52414944 at RAM end - 16.
- */
-#if defined(__i386__) && !defined(SCSI_NCR_PCI_MEM_NOT_SUPPORTED)
- if (chip && (base_2_c & PCI_BASE_ADDRESS_MEM_MASK)) {
- unsigned int ram_size, ram_val;
- u_long ram_ptr;
-
- if (chip->features & FE_RAM8K)
- ram_size = 8192;
- else
- ram_size = 4096;
-
- ram_ptr = remap_pci_mem(base_2_c & PCI_BASE_ADDRESS_MEM_MASK,
- ram_size);
- if (ram_ptr) {
- ram_val = readl_raw(ram_ptr + ram_size - 16);
- unmap_pci_mem(ram_ptr, ram_size);
- if (ram_val == 0x52414944) {
- printk(NAME53C8XX": not initializing, "
- "driven by SISL RAID controller.\n");
- return -1;
- }
- }
- }
-#endif /* i386 and PCI MEMORY accessible */
-
- if (!chip) {
- printk(NAME53C8XX ": not initializing, device not supported\n");
- return -1;
- }
-
-#if defined(__powerpc__) || defined(__hppa__)
- /*
- ** Fix-up for power/pc and hppa.
- ** Should not be performed by the driver.
- */
- if ((command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
- != (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": setting%s%s...\n",
- (command & PCI_COMMAND_IO) ? "" : " PCI_COMMAND_IO",
- (command & PCI_COMMAND_MEMORY) ? "" : " PCI_COMMAND_MEMORY");
- command |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-
-#endif /* __powerpc__ */
-
-#if defined(__i386__) && !defined(MODULE)
- if (!cache_line_size) {
- switch(boot_cpu_data.x86) {
- case 4: suggested_cache_line_size = 4; break;
- case 6:
- case 5: suggested_cache_line_size = 8; break;
- }
- }
-#endif /* __i386__ */
-
- /*
- ** Check availability of IO space, memory space.
- ** Enable master capability if not yet.
- **
- ** We shouldn't have to care about the IO region when
- ** we are using MMIO. But calling check_region() from
- ** both the ncr53c8xx and the sym53c8xx drivers prevents
- ** from attaching devices from the both drivers.
- ** If you have a better idea, let me know.
- */
-/* #ifdef SCSI_NCR_IOMAPPED */
-#if 1
- if (!(command & PCI_COMMAND_IO)) {
- printk(NAME53C8XX ": I/O base address (0x%lx) disabled.\n",
- (long) io_port);
- io_port = 0;
- }
-#endif
- if (!(command & PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": PCI_COMMAND_MEMORY not set.\n");
- base = 0;
- base_2 = 0;
- }
- io_port &= PCI_BASE_ADDRESS_IO_MASK;
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- base_2 &= PCI_BASE_ADDRESS_MEM_MASK;
-
-/* #ifdef SCSI_NCR_IOMAPPED */
-#if 1
- if (io_port && check_region (io_port, 128)) {
- printk(NAME53C8XX ": IO region 0x%lx[0..127] is in use\n",
- (long) io_port);
- io_port = 0;
- }
- if (!io_port)
- return -1;
-#endif
-#ifndef SCSI_NCR_IOMAPPED
- if (!base) {
- printk(NAME53C8XX ": MMIO base address disabled.\n");
- return -1;
- }
-#endif
-
- /*
- ** Set MASTER capable and PARITY bit, if not yet.
- */
- if ((command & (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY))
- != (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY)) {
- printk(NAME53C8XX ": setting%s%s...(fix-up)\n",
- (command & PCI_COMMAND_MASTER) ? "" : " PCI_COMMAND_MASTER",
- (command & PCI_COMMAND_PARITY) ? "" : " PCI_COMMAND_PARITY");
- command |= (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-
- /*
- ** Fix some features according to driver setup.
- */
- if (!(driver_setup.special_features & 1))
- chip->features &= ~FE_SPECIAL_SET;
- else {
- if (driver_setup.special_features & 2)
- chip->features &= ~FE_WRIE;
- if (driver_setup.special_features & 4)
- chip->features &= ~FE_NOPM;
- }
-
- /*
- ** Work around for errant bit in 895A. The 66Mhz
- ** capable bit is set erroneously. Clear this bit.
- ** (Item 1 DEL 533)
- **
- ** Make sure Config space and Features agree.
- **
- ** Recall: writes are not normal to status register -
- ** write a 1 to clear and a 0 to leave unchanged.
- ** Can only reset bits.
- */
- if (chip->features & FE_66MHZ) {
- if (!(status_reg & PCI_STATUS_66MHZ))
- chip->features &= ~FE_66MHZ;
- }
- else {
- if (status_reg & PCI_STATUS_66MHZ) {
- status_reg = PCI_STATUS_66MHZ;
- pci_write_config_word(pdev, PCI_STATUS, status_reg);
- pci_read_config_word(pdev, PCI_STATUS, &status_reg);
- }
- }
-
- /*
- ** Some features are required to be enabled in order to
- ** work around some chip problems. :) ;)
- ** (ITEM 12 of a DEL about the 896 I haven't yet).
- ** We must ensure the chip will use WRITE AND INVALIDATE.
- ** The revision number limit is for now arbitrary.
- */
- if (device_id == PCI_DEVICE_ID_NCR_53C896 && revision <= 0x10) {
- chip->features |= (FE_WRIE | FE_CLSE);
- pci_fix_up |= 3; /* Force appropriate PCI fix-up */
- }
-
-#ifdef SCSI_NCR_PCI_FIX_UP_SUPPORT
- /*
- ** Try to fix up PCI config according to wished features.
- */
- if ((pci_fix_up & 1) && (chip->features & FE_CLSE) &&
- !cache_line_size && suggested_cache_line_size) {
- cache_line_size = suggested_cache_line_size;
- pci_write_config_byte(pdev,
- PCI_CACHE_LINE_SIZE, cache_line_size);
- printk(NAME53C8XX ": PCI_CACHE_LINE_SIZE set to %d (fix-up).\n",
- cache_line_size);
- }
-
- if ((pci_fix_up & 2) && cache_line_size &&
- (chip->features & FE_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
- printk(NAME53C8XX": setting PCI_COMMAND_INVALIDATE (fix-up)\n");
- command |= PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-
- /*
- ** Tune PCI LATENCY TIMER according to burst max length transfer.
- ** (latency timer >= burst length + 6, we add 10 to be quite sure)
- */
-
- if (chip->burst_max && (latency_timer == 0 || (pci_fix_up & 4))) {
- uchar lt = (1 << chip->burst_max) + 6 + 10;
- if (latency_timer < lt) {
- printk(NAME53C8XX
- ": changing PCI_LATENCY_TIMER from %d to %d.\n",
- (int) latency_timer, (int) lt);
- latency_timer = lt;
- pci_write_config_byte(pdev,
- PCI_LATENCY_TIMER, latency_timer);
- }
- }
-
-#endif /* SCSI_NCR_PCI_FIX_UP_SUPPORT */
-
- /*
- ** Initialise ncr_device structure with items required by ncr_attach.
- */
- device->pdev = pdev;
- device->slot.bus = PciBusNumber(pdev);
- device->slot.device_fn = PciDeviceFn(pdev);
- device->slot.base = base;
- device->slot.base_2 = base_2;
- device->slot.base_c = base_c;
- device->slot.base_2_c = base_2_c;
- device->slot.io_port = io_port;
- device->slot.irq = irq;
- device->attach_done = 0;
-
- return 0;
-}
-
-
-/*===================================================================
-** Detect and try to read SYMBIOS and TEKRAM NVRAM.
-**
-** Data can be used to order booting of boards.
-**
-** Data is saved in ncr_device structure if NVRAM found. This
-** is then used to find drive boot order for ncr_attach().
-**
-** NVRAM data is passed to Scsi_Host_Template later during
-** ncr_attach() for any device set up.
-*===================================================================
-*/
-#ifdef SCSI_NCR_NVRAM_SUPPORT
-static void __init ncr_get_nvram(ncr_device *devp, ncr_nvram *nvp)
-{
- devp->nvram = nvp;
- if (!nvp)
- return;
- /*
- ** Get access to chip IO registers
- */
-#ifdef SCSI_NCR_IOMAPPED
- request_region(devp->slot.io_port, 128, NAME53C8XX);
- devp->slot.base_io = devp->slot.io_port;
-#else
- devp->slot.reg =
- (struct ncr_reg *) remap_pci_mem(devp->slot.base_c, 128);
- if (!devp->slot.reg)
- return;
-#endif
-
- /*
- ** Try to read SYMBIOS nvram.
- ** Try to read TEKRAM nvram if Symbios nvram not found.
- */
- if (!sym_read_Symbios_nvram(&devp->slot, &nvp->data.Symbios))
- nvp->type = SCSI_NCR_SYMBIOS_NVRAM;
- else if (!sym_read_Tekram_nvram(&devp->slot, devp->chip.device_id,
- &nvp->data.Tekram))
- nvp->type = SCSI_NCR_TEKRAM_NVRAM;
- else {
- nvp->type = 0;
- devp->nvram = 0;
- }
-
- /*
- ** Release access to chip IO registers
- */
-#ifdef SCSI_NCR_IOMAPPED
- release_region(devp->slot.base_io, 128);
-#else
- unmap_pci_mem((u_long) devp->slot.reg, 128ul);
-#endif
-
-}
-#endif /* SCSI_NCR_NVRAM_SUPPORT */
-
-/*
-** Linux select queue depths function
-*/
-
-#define DEF_DEPTH (driver_setup.default_tags)
-#define ALL_TARGETS -2
-#define NO_TARGET -1
-#define ALL_LUNS -2
-#define NO_LUN -1
-
-static int device_queue_depth(ncb_p np, int target, int lun)
-{
- int c, h, t, u, v;
- char *p = driver_setup.tag_ctrl;
- char *ep;
-
- h = -1;
- t = NO_TARGET;
- u = NO_LUN;
- while ((c = *p++) != 0) {
- v = simple_strtoul(p, &ep, 0);
- switch(c) {
- case '/':
- ++h;
- t = ALL_TARGETS;
- u = ALL_LUNS;
- break;
- case 't':
- if (t != target)
- t = (target == v) ? v : NO_TARGET;
- u = ALL_LUNS;
- break;
- case 'u':
- if (u != lun)
- u = (lun == v) ? v : NO_LUN;
- break;
- case 'q':
- if (h == np->unit &&
- (t == ALL_TARGETS || t == target) &&
- (u == ALL_LUNS || u == lun))
- return v;
- break;
- case '-':
- t = ALL_TARGETS;
- u = ALL_LUNS;
- break;
- default:
- break;
- }
- p = ep;
- }
- return DEF_DEPTH;
-}
-
-int sym53c8xx_slave_configure(Scsi_Device *device)
-{
- struct Scsi_Host *host = device->host;
- ncb_p np;
- tcb_p tp;
- lcb_p lp;
- int numtags, depth_to_use;
-
- np = ((struct host_data *) host->hostdata)->ncb;
- tp = &np->target[device->id];
- lp = ncr_lp(np, tp, device->lun);
-
- /*
- ** Select queue depth from driver setup.
- ** Donnot use more than configured by user.
- ** Use at least 2.
- ** Donnot use more than our maximum.
- */
- numtags = device_queue_depth(np, device->id, device->lun);
- if (numtags > tp->usrtags)
- numtags = tp->usrtags;
- if (!device->tagged_supported)
- numtags = 1;
- depth_to_use = numtags;
- if (depth_to_use < 2)
- depth_to_use = 2;
- if (depth_to_use > MAX_TAGS)
- depth_to_use = MAX_TAGS;
-
- scsi_adjust_queue_depth(device,
- (device->tagged_supported ?
- MSG_SIMPLE_TAG : 0),
- depth_to_use);
-
- /*
- ** Since the queue depth is not tunable under Linux,
- ** we need to know this value in order not to
- ** announce stupid things to user.
- */
- if (lp) {
- lp->numtags = lp->maxtags = numtags;
- lp->scdev_depth = depth_to_use;
- }
- ncr_setup_tags (np, device->id, device->lun);
-
-#ifdef DEBUG_SYM53C8XX
- printk("sym53c8xx_select_queue_depth: host=%d, id=%d, lun=%d, depth=%d\n",
- np->unit, device->id, device->lun, depth_to_use);
-#endif
-
- return 0;
-}
-
-/*
-** Linux entry point for info() function
-*/
-const char *sym53c8xx_info (struct Scsi_Host *host)
-{
- return SCSI_NCR_DRIVER_NAME;
-}
-
-/*
-** Linux entry point of queuecommand() function
-*/
-
-int sym53c8xx_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
-{
- ncb_p np = ((struct host_data *) cmd->device->host->hostdata)->ncb;
- unsigned long flags;
- int sts;
-
-#ifdef DEBUG_SYM53C8XX
-printk("sym53c8xx_queue_command\n");
-#endif
-
- cmd->scsi_done = done;
- cmd->host_scribble = NULL;
- cmd->SCp.ptr = NULL;
- cmd->SCp.buffer = NULL;
-#ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- __data_mapped(cmd) = 0;
- __data_mapping(cmd) = 0;
-#endif
-
- NCR_LOCK_NCB(np, flags);
-
- if ((sts = ncr_queue_command(np, cmd)) != DID_OK) {
- SetScsiResult(cmd, sts, 0);
-#ifdef DEBUG_SYM53C8XX
-printk("sym53c8xx : command not queued - result=%d\n", sts);
-#endif
- }
-#ifdef DEBUG_SYM53C8XX
- else
-printk("sym53c8xx : command successfully queued\n");
-#endif
-
- NCR_UNLOCK_NCB(np, flags);
-
- if (sts != DID_OK) {
- unmap_scsi_data(np, cmd);
- done(cmd);
- }
-
- return sts;
-}
-
-/*
-** Linux entry point of the interrupt handler.
-** Since linux versions > 1.3.70, we trust the kernel for
-** passing the internal host descriptor as 'dev_id'.
-** Otherwise, we scan the host list and call the interrupt
-** routine for each host that uses this IRQ.
-*/
-
-static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs)
-{
- unsigned long flags;
- ncb_p np = (ncb_p) dev_id;
- Scsi_Cmnd *done_list;
-
-#ifdef DEBUG_SYM53C8XX
- printk("sym53c8xx : interrupt received\n");
-#endif
-
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("[");
-
- NCR_LOCK_NCB(np, flags);
- ncr_exception(np);
- done_list = np->done_list;
- np->done_list = 0;
- NCR_UNLOCK_NCB(np, flags);
-
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("]\n");
-
- if (done_list) {
- NCR_LOCK_SCSI_DONE(done_list->device->host, flags);
- ncr_flush_done_cmds(done_list);
- NCR_UNLOCK_SCSI_DONE(done_list->device->host, flags);
- }
- return IRQ_HANDLED;
-}
-
-/*
-** Linux entry point of the timer handler
-*/
-
-static void sym53c8xx_timeout(unsigned long npref)
-{
- ncb_p np = (ncb_p) npref;
- unsigned long flags;
- Scsi_Cmnd *done_list;
-
- NCR_LOCK_NCB(np, flags);
- ncr_timeout((ncb_p) np);
- done_list = np->done_list;
- np->done_list = 0;
- NCR_UNLOCK_NCB(np, flags);
-
- if (done_list) {
- NCR_LOCK_SCSI_DONE(done_list->device->host, flags);
- ncr_flush_done_cmds(done_list);
- NCR_UNLOCK_SCSI_DONE(done_list->device->host, flags);
- }
-}
-
-/*
-** Linux entry point of reset() function
-*/
-
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
-int sym53c8xx_reset(Scsi_Cmnd *cmd, unsigned int reset_flags)
-#else
-int sym53c8xx_reset(Scsi_Cmnd *cmd)
-#endif
-{
- ncb_p np = ((struct host_data *) cmd->device->host->hostdata)->ncb;
- int sts;
- unsigned long flags;
- Scsi_Cmnd *done_list;
-
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
- printk("sym53c8xx_reset: pid=%lu reset_flags=%x serial_number=%ld serial_number_at_timeout=%ld\n",
- cmd->pid, reset_flags, cmd->serial_number, cmd->serial_number_at_timeout);
-#else
- printk("sym53c8xx_reset: command pid %lu\n", cmd->pid);
-#endif
-
- NCR_LOCK_NCB(np, flags);
-
- /*
- * We have to just ignore reset requests in some situations.
- */
-#if defined SCSI_RESET_NOT_RUNNING
- if (cmd->serial_number != cmd->serial_number_at_timeout) {
- sts = SCSI_RESET_NOT_RUNNING;
- goto out;
- }
-#endif
- /*
- * If the mid-level driver told us reset is synchronous, it seems
- * that we must call the done() callback for the involved command,
- * even if this command was not queued to the low-level driver,
- * before returning SCSI_RESET_SUCCESS.
- */
-
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
- sts = ncr_reset_bus(np, cmd,
- (reset_flags & (SCSI_RESET_SYNCHRONOUS | SCSI_RESET_ASYNCHRONOUS)) == SCSI_RESET_SYNCHRONOUS);
-#else
- sts = ncr_reset_bus(np, cmd, 0);
-#endif
-
- /*
- * Since we always reset the controller, when we return success,
- * we add this information to the return code.
- */
-#if defined SCSI_RESET_HOST_RESET
- if (sts == SCSI_RESET_SUCCESS)
- sts |= SCSI_RESET_HOST_RESET;
-#endif
-
-out:
- done_list = np->done_list;
- np->done_list = 0;
- NCR_UNLOCK_NCB(np, flags);
-
- ncr_flush_done_cmds(done_list);
-
- return sts;
-}
-
-/*
-** Linux entry point of abort() function
-*/
-
-int sym53c8xx_abort(Scsi_Cmnd *cmd)
-{
- ncb_p np = ((struct host_data *) cmd->device->host->hostdata)->ncb;
- int sts;
- unsigned long flags;
- Scsi_Cmnd *done_list;
-
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
- printk("sym53c8xx_abort: pid=%lu serial_number=%ld serial_number_at_timeout=%ld\n",
- cmd->pid, cmd->serial_number, cmd->serial_number_at_timeout);
-#else
- printk("sym53c8xx_abort: command pid %lu\n", cmd->pid);
-#endif
-
- NCR_LOCK_NCB(np, flags);
-
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
- /*
- * We have to just ignore abort requests in some situations.
- */
- if (cmd->serial_number != cmd->serial_number_at_timeout) {
- sts = SCSI_ABORT_NOT_RUNNING;
- goto out;
- }
-#endif
-
- sts = ncr_abort_command(np, cmd);
-out:
- done_list = np->done_list;
- np->done_list = 0;
- NCR_UNLOCK_NCB(np, flags);
-
- ncr_flush_done_cmds(done_list);
-
- return sts;
-}
-
-
-int sym53c8xx_release(struct Scsi_Host *host)
-{
-#ifdef DEBUG_SYM53C8XX
-printk("sym53c8xx : release\n");
-#endif
- ncr_detach(((struct host_data *) host->hostdata)->ncb);
-
- return 1;
-}
-
-
-/*
-** Scsi command waiting list management.
-**
-** It may happen that we cannot insert a scsi command into the start queue,
-** in the following circumstances.
-** Too few preallocated ccb(s),
-** maxtags < cmd_per_lun of the Linux host control block,
-** etc...
-** Such scsi commands are inserted into a waiting list.
-** When a scsi command complete, we try to requeue the commands of the
-** waiting list.
-*/
-
-#define next_wcmd host_scribble
-
-static void insert_into_waiting_list(ncb_p np, Scsi_Cmnd *cmd)
-{
- Scsi_Cmnd *wcmd;
-
-#ifdef DEBUG_WAITING_LIST
- printk("%s: cmd %lx inserted into waiting list\n", ncr_name(np), (u_long) cmd);
-#endif
- cmd->next_wcmd = 0;
- if (!(wcmd = np->waiting_list)) np->waiting_list = cmd;
- else {
- while ((wcmd->next_wcmd) != 0)
- wcmd = (Scsi_Cmnd *) wcmd->next_wcmd;
- wcmd->next_wcmd = (char *) cmd;
- }
-}
-
-static Scsi_Cmnd *retrieve_from_waiting_list(int to_remove, ncb_p np, Scsi_Cmnd *cmd)
-{
- Scsi_Cmnd **pcmd = &np->waiting_list;
-
- while (*pcmd) {
- if (cmd == *pcmd) {
- if (to_remove) {
- *pcmd = (Scsi_Cmnd *) cmd->next_wcmd;
- cmd->next_wcmd = 0;
- }
-#ifdef DEBUG_WAITING_LIST
- printk("%s: cmd %lx retrieved from waiting list\n", ncr_name(np), (u_long) cmd);
-#endif
- return cmd;
- }
- pcmd = (Scsi_Cmnd **) &(*pcmd)->next_wcmd;
- }
- return 0;
-}
-
-static void process_waiting_list(ncb_p np, int sts)
-{
- Scsi_Cmnd *waiting_list, *wcmd;
-
- waiting_list = np->waiting_list;
- np->waiting_list = 0;
-
-#ifdef DEBUG_WAITING_LIST
- if (waiting_list) printk("%s: waiting_list=%lx processing sts=%d\n", ncr_name(np), (u_long) waiting_list, sts);
-#endif
- while ((wcmd = waiting_list) != 0) {
- waiting_list = (Scsi_Cmnd *) wcmd->next_wcmd;
- wcmd->next_wcmd = 0;
- if (sts == DID_OK) {
-#ifdef DEBUG_WAITING_LIST
- printk("%s: cmd %lx trying to requeue\n", ncr_name(np), (u_long) wcmd);
-#endif
- sts = ncr_queue_command(np, wcmd);
- }
- if (sts != DID_OK) {
-#ifdef DEBUG_WAITING_LIST
- printk("%s: cmd %lx done forced sts=%d\n", ncr_name(np), (u_long) wcmd, sts);
-#endif
- SetScsiResult(wcmd, sts, 0);
- ncr_queue_done_cmd(np, wcmd);
- }
- }
-}
-
-#undef next_wcmd
-
-#ifdef SCSI_NCR_PROC_INFO_SUPPORT
-
-/*=========================================================================
-** Proc file system stuff
-**
-** A read operation returns adapter information.
-** A write operation is a control command.
-** The string is parsed in the driver code and the command is passed
-** to the ncr_usercmd() function.
-**=========================================================================
-*/
-
-#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
-
-#define is_digit(c) ((c) >= '0' && (c) <= '9')
-#define digit_to_bin(c) ((c) - '0')
-#define is_space(c) ((c) == ' ' || (c) == '\t')
-
-static int skip_spaces(char *ptr, int len)
-{
- int cnt, c;
-
- for (cnt = len; cnt > 0 && (c = *ptr++) && is_space(c); cnt--);
-
- return (len - cnt);
-}
-
-static int get_int_arg(char *ptr, int len, u_long *pv)
-{
- int cnt, c;
- u_long v;
-
- for (v = 0, cnt = len; cnt > 0 && (c = *ptr++) && is_digit(c); cnt--) {
- v = (v * 10) + digit_to_bin(c);
- }
-
- if (pv)
- *pv = v;
-
- return (len - cnt);
-}
-
-static int is_keyword(char *ptr, int len, char *verb)
-{
- int verb_len = strlen(verb);
-
- if (len >= strlen(verb) && !memcmp(verb, ptr, verb_len))
- return verb_len;
- else
- return 0;
-
-}
-
-#define SKIP_SPACES(min_spaces) \
- if ((arg_len = skip_spaces(ptr, len)) < (min_spaces)) \
- return -EINVAL; \
- ptr += arg_len; len -= arg_len;
-
-#define GET_INT_ARG(v) \
- if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
- return -EINVAL; \
- ptr += arg_len; len -= arg_len;
-
-
-/*
-** Parse a control command
-*/
-
-static int ncr_user_command(ncb_p np, char *buffer, int length)
-{
- char *ptr = buffer;
- int len = length;
- struct usrcmd *uc = &np->user;
- int arg_len;
- u_long target;
-
- bzero(uc, sizeof(*uc));
-
- if (len > 0 && ptr[len-1] == '\n')
- --len;
-
- if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
- uc->cmd = UC_SETSYNC;
- else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
- uc->cmd = UC_SETTAGS;
- else if ((arg_len = is_keyword(ptr, len, "setorder")) != 0)
- uc->cmd = UC_SETORDER;
- else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
- uc->cmd = UC_SETVERBOSE;
- else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
- uc->cmd = UC_SETWIDE;
- else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
- uc->cmd = UC_SETDEBUG;
- else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
- uc->cmd = UC_SETFLAG;
- else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
- uc->cmd = UC_RESETDEV;
- else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
- uc->cmd = UC_CLEARDEV;
- else
- arg_len = 0;
-
-#ifdef DEBUG_PROC_INFO
-printk("ncr_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
-#endif
-
- if (!arg_len)
- return -EINVAL;
- ptr += arg_len; len -= arg_len;
-
- switch(uc->cmd) {
- case UC_SETSYNC:
- case UC_SETTAGS:
- case UC_SETWIDE:
- case UC_SETFLAG:
- case UC_RESETDEV:
- case UC_CLEARDEV:
- SKIP_SPACES(1);
- if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
- ptr += arg_len; len -= arg_len;
- uc->target = ~0;
- } else {
- GET_INT_ARG(target);
- uc->target = (1<<target);
-#ifdef DEBUG_PROC_INFO
-printk("ncr_user_command: target=%ld\n", target);
-#endif
- }
- break;
- }
-
- switch(uc->cmd) {
- case UC_SETVERBOSE:
- case UC_SETSYNC:
- case UC_SETTAGS:
- case UC_SETWIDE:
- SKIP_SPACES(1);
- GET_INT_ARG(uc->data);
-#ifdef DEBUG_PROC_INFO
-printk("ncr_user_command: data=%ld\n", uc->data);
-#endif
- break;
- case UC_SETORDER:
- SKIP_SPACES(1);
- if ((arg_len = is_keyword(ptr, len, "simple")))
- uc->data = M_SIMPLE_TAG;
- else if ((arg_len = is_keyword(ptr, len, "ordered")))
- uc->data = M_ORDERED_TAG;
- else if ((arg_len = is_keyword(ptr, len, "default")))
- uc->data = 0;
- else
- return -EINVAL;
- break;
- case UC_SETDEBUG:
- while (len > 0) {
- SKIP_SPACES(1);
- if ((arg_len = is_keyword(ptr, len, "alloc")))
- uc->data |= DEBUG_ALLOC;
- else if ((arg_len = is_keyword(ptr, len, "phase")))
- uc->data |= DEBUG_PHASE;
- else if ((arg_len = is_keyword(ptr, len, "queue")))
- uc->data |= DEBUG_QUEUE;
- else if ((arg_len = is_keyword(ptr, len, "result")))
- uc->data |= DEBUG_RESULT;
- else if ((arg_len = is_keyword(ptr, len, "pointer")))
- uc->data |= DEBUG_POINTER;
- else if ((arg_len = is_keyword(ptr, len, "script")))
- uc->data |= DEBUG_SCRIPT;
- else if ((arg_len = is_keyword(ptr, len, "tiny")))
- uc->data |= DEBUG_TINY;
- else if ((arg_len = is_keyword(ptr, len, "timing")))
- uc->data |= DEBUG_TIMING;
- else if ((arg_len = is_keyword(ptr, len, "nego")))
- uc->data |= DEBUG_NEGO;
- else if ((arg_len = is_keyword(ptr, len, "tags")))
- uc->data |= DEBUG_TAGS;
- else
- return -EINVAL;
- ptr += arg_len; len -= arg_len;
- }
-#ifdef DEBUG_PROC_INFO
-printk("ncr_user_command: data=%ld\n", uc->data);
-#endif
- break;
- case UC_SETFLAG:
- while (len > 0) {
- SKIP_SPACES(1);
- if ((arg_len = is_keyword(ptr, len, "trace")))
- uc->data |= UF_TRACE;
- else if ((arg_len = is_keyword(ptr, len, "no_disc")))
- uc->data |= UF_NODISC;
- else
- return -EINVAL;
- ptr += arg_len; len -= arg_len;
- }
- break;
- default:
- break;
- }
-
- if (len)
- return -EINVAL;
- else {
- unsigned long flags;
-
- NCR_LOCK_NCB(np, flags);
- ncr_usercmd (np);
- NCR_UNLOCK_NCB(np, flags);
- }
- return length;
-}
-
-#endif /* SCSI_NCR_USER_COMMAND_SUPPORT */
-
-#ifdef SCSI_NCR_USER_INFO_SUPPORT
-
-struct info_str
-{
- char *buffer;
- int length;
- int offset;
- int pos;
-};
-
-static void copy_mem_info(struct info_str *info, char *data, int len)
-{
- if (info->pos + len > info->length)
- len = info->length - info->pos;
-
- if (info->pos + len < info->offset) {
- info->pos += len;
- return;
- }
- if (info->pos < info->offset) {
- data += (info->offset - info->pos);
- len -= (info->offset - info->pos);
- }
-
- if (len > 0) {
- memcpy(info->buffer + info->pos, data, len);
- info->pos += len;
- }
-}
-
-static int copy_info(struct info_str *info, char *fmt, ...)
-{
- va_list args;
- char buf[81];
- int len;
-
- va_start(args, fmt);
- len = vsprintf(buf, fmt, args);
- va_end(args);
-
- copy_mem_info(info, buf, len);
- return len;
-}
-
-/*
-** Copy formatted information into the input buffer.
-*/
-
-static int ncr_host_info(ncb_p np, char *ptr, off_t offset, int len)
-{
- struct info_str info;
-
- info.buffer = ptr;
- info.length = len;
- info.offset = offset;
- info.pos = 0;
-
- copy_info(&info, "General information:\n");
- copy_info(&info, " Chip " NAME53C "%s, device id 0x%x, "
- "revision id 0x%x\n",
- np->chip_name, np->device_id, np->revision_id);
- copy_info(&info, " On PCI bus %d, device %d, function %d, "
-#ifdef __sparc__
- "IRQ %s\n",
-#else
- "IRQ %d\n",
-#endif
- np->bus, (np->device_fn & 0xf8) >> 3, np->device_fn & 7,
-#ifdef __sparc__
- __irq_itoa(np->irq));
-#else
- (int) np->irq);
-#endif
- copy_info(&info, " Synchronous period factor %d, "
- "max commands per lun %d\n",
- (int) np->minsync, MAX_TAGS);
-
- if (driver_setup.debug || driver_setup.verbose > 1) {
- copy_info(&info, " Debug flags 0x%x, verbosity level %d\n",
- driver_setup.debug, driver_setup.verbose);
- }
-
- return info.pos > info.offset? info.pos - info.offset : 0;
-}
-
-#endif /* SCSI_NCR_USER_INFO_SUPPORT */
-
-/*
-** Entry point of the scsi proc fs of the driver.
-** - func = 0 means read (returns adapter infos)
-** - func = 1 means write (parse user control command)
-*/
-
-static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
- int length, int func)
-{
- struct host_data *host_data;
- ncb_p ncb = 0;
- int retv;
-
-#ifdef DEBUG_PROC_INFO
-printk("sym53c8xx_proc_info: hostno=%d, func=%d\n", host->host_no, func);
-#endif
-
- host_data = (struct host_data *) host->hostdata;
- ncb = host_data->ncb;
- retv = -EINVAL;
- if (!ncb)
- goto out;
-
- if (func) {
-#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
- retv = ncr_user_command(ncb, buffer, length);
-#endif
- } else {
- if (start)
- *start = buffer;
-#ifdef SCSI_NCR_USER_INFO_SUPPORT
- retv = ncr_host_info(ncb, buffer, offset, length);
-#endif
- }
-
-out:
- return retv;
-}
-
-
-/*=========================================================================
-** End of proc file system stuff
-**=========================================================================
-*/
-#endif
-
-
-#ifdef SCSI_NCR_NVRAM_SUPPORT
-
-/*
- * 24C16 EEPROM reading.
- *
- * GPOI0 - data in/data out
- * GPIO1 - clock
- * Symbios NVRAM wiring now also used by Tekram.
- */
-
-#define SET_BIT 0
-#define CLR_BIT 1
-#define SET_CLK 2
-#define CLR_CLK 3
-
-/*
- * Set/clear data/clock bit in GPIO0
- */
-static void __init
-S24C16_set_bit(ncr_slot *np, u_char write_bit, u_char *gpreg, int bit_mode)
-{
- UDELAY (5);
- switch (bit_mode){
- case SET_BIT:
- *gpreg |= write_bit;
- break;
- case CLR_BIT:
- *gpreg &= 0xfe;
- break;
- case SET_CLK:
- *gpreg |= 0x02;
- break;
- case CLR_CLK:
- *gpreg &= 0xfd;
- break;
-
- }
- OUTB (nc_gpreg, *gpreg);
- UDELAY (5);
-}
-
-/*
- * Send START condition to NVRAM to wake it up.
- */
-static void __init S24C16_start(ncr_slot *np, u_char *gpreg)
-{
- S24C16_set_bit(np, 1, gpreg, SET_BIT);
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- S24C16_set_bit(np, 0, gpreg, CLR_BIT);
- S24C16_set_bit(np, 0, gpreg, CLR_CLK);
-}
-
-/*
- * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZzzzz!!
- */
-static void __init S24C16_stop(ncr_slot *np, u_char *gpreg)
-{
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- S24C16_set_bit(np, 1, gpreg, SET_BIT);
-}
-
-/*
- * Read or write a bit to the NVRAM,
- * read if GPIO0 input else write if GPIO0 output
- */
-static void __init
-S24C16_do_bit(ncr_slot *np, u_char *read_bit, u_char write_bit, u_char *gpreg)
-{
- S24C16_set_bit(np, write_bit, gpreg, SET_BIT);
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- if (read_bit)
- *read_bit = INB (nc_gpreg);
- S24C16_set_bit(np, 0, gpreg, CLR_CLK);
- S24C16_set_bit(np, 0, gpreg, CLR_BIT);
-}
-
-/*
- * Output an ACK to the NVRAM after reading,
- * change GPIO0 to output and when done back to an input
- */
-static void __init
-S24C16_write_ack(ncr_slot *np, u_char write_bit, u_char *gpreg, u_char *gpcntl)
-{
- OUTB (nc_gpcntl, *gpcntl & 0xfe);
- S24C16_do_bit(np, 0, write_bit, gpreg);
- OUTB (nc_gpcntl, *gpcntl);
-}
-
-/*
- * Input an ACK from NVRAM after writing,
- * change GPIO0 to input and when done back to an output
- */
-static void __init
-S24C16_read_ack(ncr_slot *np, u_char *read_bit, u_char *gpreg, u_char *gpcntl)
-{
- OUTB (nc_gpcntl, *gpcntl | 0x01);
- S24C16_do_bit(np, read_bit, 1, gpreg);
- OUTB (nc_gpcntl, *gpcntl);
-}
-
-/*
- * WRITE a byte to the NVRAM and then get an ACK to see it was accepted OK,
- * GPIO0 must already be set as an output
- */
-static void __init
-S24C16_write_byte(ncr_slot *np, u_char *ack_data, u_char write_data,
- u_char *gpreg, u_char *gpcntl)
-{
- int x;
-
- for (x = 0; x < 8; x++)
- S24C16_do_bit(np, 0, (write_data >> (7 - x)) & 0x01, gpreg);
-
- S24C16_read_ack(np, ack_data, gpreg, gpcntl);
-}
-
-/*
- * READ a byte from the NVRAM and then send an ACK to say we have got it,
- * GPIO0 must already be set as an input
- */
-static void __init
-S24C16_read_byte(ncr_slot *np, u_char *read_data, u_char ack_data,
- u_char *gpreg, u_char *gpcntl)
-{
- int x;
- u_char read_bit;
-
- *read_data = 0;
- for (x = 0; x < 8; x++) {
- S24C16_do_bit(np, &read_bit, 1, gpreg);
- *read_data |= ((read_bit & 0x01) << (7 - x));
- }
-
- S24C16_write_ack(np, ack_data, gpreg, gpcntl);
-}
-
-/*
- * Read 'len' bytes starting at 'offset'.
- */
-static int __init
-sym_read_S24C16_nvram (ncr_slot *np, int offset, u_char *data, int len)
-{
- u_char gpcntl, gpreg;
- u_char old_gpcntl, old_gpreg;
- u_char ack_data;
- int retv = 1;
- int x;
-
- /* save current state of GPCNTL and GPREG */
- old_gpreg = INB (nc_gpreg);
- old_gpcntl = INB (nc_gpcntl);
- gpcntl = old_gpcntl & 0x1c;
-
- /* set up GPREG & GPCNTL to set GPIO0 and GPIO1 in to known state */
- OUTB (nc_gpreg, old_gpreg);
- OUTB (nc_gpcntl, gpcntl);
-
- /* this is to set NVRAM into a known state with GPIO0/1 both low */
- gpreg = old_gpreg;
- S24C16_set_bit(np, 0, &gpreg, CLR_CLK);
- S24C16_set_bit(np, 0, &gpreg, CLR_BIT);
-
- /* now set NVRAM inactive with GPIO0/1 both high */
- S24C16_stop(np, &gpreg);
-
- /* activate NVRAM */
- S24C16_start(np, &gpreg);
-
- /* write device code and random address MSB */
- S24C16_write_byte(np, &ack_data,
- 0xa0 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
-
- /* write random address LSB */
- S24C16_write_byte(np, &ack_data,
- offset & 0xff, &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
-
- /* regenerate START state to set up for reading */
- S24C16_start(np, &gpreg);
-
- /* rewrite device code and address MSB with read bit set (lsb = 0x01) */
- S24C16_write_byte(np, &ack_data,
- 0xa1 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
-
- /* now set up GPIO0 for inputting data */
- gpcntl |= 0x01;
- OUTB (nc_gpcntl, gpcntl);
-
- /* input all requested data - only part of total NVRAM */
- for (x = 0; x < len; x++)
- S24C16_read_byte(np, &data[x], (x == (len-1)), &gpreg, &gpcntl);
-
- /* finally put NVRAM back in inactive mode */
- gpcntl &= 0xfe;
- OUTB (nc_gpcntl, gpcntl);
- S24C16_stop(np, &gpreg);
- retv = 0;
-out:
- /* return GPIO0/1 to original states after having accessed NVRAM */
- OUTB (nc_gpcntl, old_gpcntl);
- OUTB (nc_gpreg, old_gpreg);
-
- return retv;
-}
-
-#undef SET_BIT
-#undef CLR_BIT
-#undef SET_CLK
-#undef CLR_CLK
-
-/*
- * Try reading Symbios NVRAM.
- * Return 0 if OK.
- */
-static int __init sym_read_Symbios_nvram (ncr_slot *np, Symbios_nvram *nvram)
-{
- static u_char Symbios_trailer[6] = {0xfe, 0xfe, 0, 0, 0, 0};
- u_char *data = (u_char *) nvram;
- int len = sizeof(*nvram);
- u_short csum;
- int x;
-
- /* probe the 24c16 and read the SYMBIOS 24c16 area */
- if (sym_read_S24C16_nvram (np, SYMBIOS_NVRAM_ADDRESS, data, len))
- return 1;
-
- /* check valid NVRAM signature, verify byte count and checksum */
- if (nvram->type != 0 ||
- memcmp(nvram->trailer, Symbios_trailer, 6) ||
- nvram->byte_count != len - 12)
- return 1;
-
- /* verify checksum */
- for (x = 6, csum = 0; x < len - 6; x++)
- csum += data[x];
- if (csum != nvram->checksum)
- return 1;
-
- return 0;
-}
-
-/*
- * 93C46 EEPROM reading.
- *
- * GPOI0 - data in
- * GPIO1 - data out
- * GPIO2 - clock
- * GPIO4 - chip select
- *
- * Used by Tekram.
- */
-
-/*
- * Pulse clock bit in GPIO0
- */
-static void __init T93C46_Clk(ncr_slot *np, u_char *gpreg)
-{
- OUTB (nc_gpreg, *gpreg | 0x04);
- UDELAY (2);
- OUTB (nc_gpreg, *gpreg);
-}
-
-/*
- * Read bit from NVRAM
- */
-static void __init T93C46_Read_Bit(ncr_slot *np, u_char *read_bit, u_char *gpreg)
-{
- UDELAY (2);
- T93C46_Clk(np, gpreg);
- *read_bit = INB (nc_gpreg);
-}
-
-/*
- * Write bit to GPIO0
- */
-static void __init T93C46_Write_Bit(ncr_slot *np, u_char write_bit, u_char *gpreg)
-{
- if (write_bit & 0x01)
- *gpreg |= 0x02;
- else
- *gpreg &= 0xfd;
-
- *gpreg |= 0x10;
-
- OUTB (nc_gpreg, *gpreg);
- UDELAY (2);
-
- T93C46_Clk(np, gpreg);
-}
-
-/*
- * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZZzzz!!
- */
-static void __init T93C46_Stop(ncr_slot *np, u_char *gpreg)
-{
- *gpreg &= 0xef;
- OUTB (nc_gpreg, *gpreg);
- UDELAY (2);
-
- T93C46_Clk(np, gpreg);
-}
-
-/*
- * Send read command and address to NVRAM
- */
-static void __init
-T93C46_Send_Command(ncr_slot *np, u_short write_data,
- u_char *read_bit, u_char *gpreg)
-{
- int x;
-
- /* send 9 bits, start bit (1), command (2), address (6) */
- for (x = 0; x < 9; x++)
- T93C46_Write_Bit(np, (u_char) (write_data >> (8 - x)), gpreg);
-
- *read_bit = INB (nc_gpreg);
-}
-
-/*
- * READ 2 bytes from the NVRAM
- */
-static void __init
-T93C46_Read_Word(ncr_slot *np, u_short *nvram_data, u_char *gpreg)
-{
- int x;
- u_char read_bit;
-
- *nvram_data = 0;
- for (x = 0; x < 16; x++) {
- T93C46_Read_Bit(np, &read_bit, gpreg);
-
- if (read_bit & 0x01)
- *nvram_data |= (0x01 << (15 - x));
- else
- *nvram_data &= ~(0x01 << (15 - x));
- }
-}
-
-/*
- * Read Tekram NvRAM data.
- */
-static int __init
-T93C46_Read_Data(ncr_slot *np, u_short *data,int len,u_char *gpreg)
-{
- u_char read_bit;
- int x;
-
- for (x = 0; x < len; x++) {
-
- /* output read command and address */
- T93C46_Send_Command(np, 0x180 | x, &read_bit, gpreg);
- if (read_bit & 0x01)
- return 1; /* Bad */
- T93C46_Read_Word(np, &data[x], gpreg);
- T93C46_Stop(np, gpreg);
- }
-
- return 0;
-}
-
-/*
- * Try reading 93C46 Tekram NVRAM.
- */
-static int __init
-sym_read_T93C46_nvram (ncr_slot *np, Tekram_nvram *nvram)
-{
- u_char gpcntl, gpreg;
- u_char old_gpcntl, old_gpreg;
- int retv = 1;
-
- /* save current state of GPCNTL and GPREG */
- old_gpreg = INB (nc_gpreg);
- old_gpcntl = INB (nc_gpcntl);
-
- /* set up GPREG & GPCNTL to set GPIO0/1/2/4 in to known state, 0 in,
- 1/2/4 out */
- gpreg = old_gpreg & 0xe9;
- OUTB (nc_gpreg, gpreg);
- gpcntl = (old_gpcntl & 0xe9) | 0x09;
- OUTB (nc_gpcntl, gpcntl);
-
- /* input all of NVRAM, 64 words */
- retv = T93C46_Read_Data(np, (u_short *) nvram,
- sizeof(*nvram) / sizeof(short), &gpreg);
-
- /* return GPIO0/1/2/4 to original states after having accessed NVRAM */
- OUTB (nc_gpcntl, old_gpcntl);
- OUTB (nc_gpreg, old_gpreg);
-
- return retv;
-}
-
-/*
- * Try reading Tekram NVRAM.
- * Return 0 if OK.
- */
-static int __init
-sym_read_Tekram_nvram (ncr_slot *np, u_short device_id, Tekram_nvram *nvram)
-{
- u_char *data = (u_char *) nvram;
- int len = sizeof(*nvram);
- u_short csum;
- int x;
-
- switch (device_id) {
- case PCI_DEVICE_ID_NCR_53C885:
- case PCI_DEVICE_ID_NCR_53C895:
- case PCI_DEVICE_ID_NCR_53C896:
- x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
- data, len);
- break;
- case PCI_DEVICE_ID_NCR_53C875:
- x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
- data, len);
- if (!x)
- break;
- default:
- x = sym_read_T93C46_nvram(np, nvram);
- break;
- }
- if (x)
- return 1;
-
- /* verify checksum */
- for (x = 0, csum = 0; x < len - 1; x += 2)
- csum += data[x] + (data[x+1] << 8);
- if (csum != 0x1234)
- return 1;
-
- return 0;
-}
-
-#endif /* SCSI_NCR_NVRAM_SUPPORT */
-
-/*
-** Module stuff
-*/
-
-MODULE_LICENSE("GPL");
-
-static Scsi_Host_Template driver_template = {
- .name = "sym53c8xx",
- .detect = sym53c8xx_detect,
- .release = sym53c8xx_release,
- .info = sym53c8xx_info,
- .queuecommand = sym53c8xx_queue_command,
- .slave_configure = sym53c8xx_slave_configure,
- .abort = sym53c8xx_abort,
- .reset = sym53c8xx_reset,
- .can_queue = SCSI_NCR_CAN_QUEUE,
- .this_id = 7,
- .sg_tablesize = SCSI_NCR_SG_TABLESIZE,
- .cmd_per_lun = SCSI_NCR_CMD_PER_LUN,
- .max_sectors = MAX_HW_SEGMENTS*8,
- .use_clustering = DISABLE_CLUSTERING,
-};
-#include "scsi_module.c"
Index: drivers/scsi/sym53c8xx.h
===================================================================
RCS file: drivers/scsi/sym53c8xx.h
diff -N drivers/scsi/sym53c8xx.h
--- drivers/scsi/sym53c8xx.h 29 Jul 2003 17:01:30 -0000 1.1
+++ /dev/null 1 Jan 1970 00:00:00 -0000
@@ -1,82 +0,0 @@
-/******************************************************************************
-** High Performance device driver for the Symbios 53C896 controller.
-**
-** Copyright (C) 1998-2001 Gerard Roudier <
[email protected]>
-**
-** This driver also supports all the Symbios 53C8XX controller family,
-** except 53C810 revisions < 16, 53C825 revisions < 16 and all
-** revisions of 53C815 controllers.
-**
-** This driver is based on the Linux port of the FreeBSD ncr driver.
-**
-** Copyright (C) 1994 Wolfgang Stanglmeier
-**
-**-----------------------------------------------------------------------------
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-**-----------------------------------------------------------------------------
-**
-** The Linux port of the FreeBSD ncr driver has been achieved in
-** november 1995 by:
-**
-** Gerard Roudier <
[email protected]>
-**
-** Being given that this driver originates from the FreeBSD version, and
-** in order to keep synergy on both, any suggested enhancements and corrections
-** received on Linux are automatically a potential candidate for the FreeBSD
-** version.
-**
-** The original driver has been written for 386bsd and FreeBSD by
-** Wolfgang Stanglmeier <
[email protected]>
-** Stefan Esser <
[email protected]>
-**
-**-----------------------------------------------------------------------------
-**
-** Major contributions:
-** --------------------
-**
-** NVRAM detection and reading.
-** Copyright (C) 1997 Richard Waltham <
[email protected]>
-**
-*******************************************************************************
-*/
-
-#ifndef SYM53C8XX_H
-#define SYM53C8XX_H
-
-#include "sym53c8xx_defs.h"
-
-/*
-** Define Scsi_Host_Template parameters
-**
-** Used by hosts.c and sym53c8xx.c with module configuration.
-*/
-
-#if (LINUX_VERSION_CODE >= 0x020400) || defined(HOSTS_C) || defined(MODULE)
-
-#include <scsi/scsicam.h>
-
-int sym53c8xx_abort(Scsi_Cmnd *);
-int sym53c8xx_detect(Scsi_Host_Template *tpnt);
-const char *sym53c8xx_info(struct Scsi_Host *host);
-int sym53c8xx_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-int sym53c8xx_reset(Scsi_Cmnd *, unsigned int);
-int sym53c8xx_slave_configure(Scsi_Device *);
-int sym53c8xx_release(struct Scsi_Host *);
-
-#endif /* defined(HOSTS_C) || defined(MODULE) */
-
-#endif /* SYM53C8XX_H */
Index: drivers/scsi/sym53c8xx_comm.h
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/sym53c8xx_comm.h,v
retrieving revision 1.2
diff -u -p -r1.2 sym53c8xx_comm.h
--- drivers/scsi/sym53c8xx_comm.h 11 Sep 2003 18:50:08 -0000 1.2
+++ drivers/scsi/sym53c8xx_comm.h 23 Sep 2003 11:47:30 -0000
@@ -246,56 +246,6 @@ static inline struct xpt_quehead *xpt_re
return elem;
}
-/*==========================================================
-**
-** Simple Wrapper to kernel PCI bus interface.
-**
-** This wrapper allows to get rid of old kernel PCI
-** interface and still allows to preserve linux-2.0
-** compatibilty. In fact, it is mostly an incomplete
-** emulation of the new PCI code for pre-2.2 kernels.
-** When kernel-2.0 support will be dropped, we will
-** just have to remove most of this code.
-**
-**==========================================================
-*/
-
-typedef struct pci_dev *pcidev_t;
-typedef struct device *device_t;
-#define PCIDEV_NULL (0)
-#define PciBusNumber(d) (d)->bus->number
-#define PciDeviceFn(d) (d)->devfn
-#define PciVendorId(d) (d)->vendor
-#define PciDeviceId(d) (d)->device
-#define PciIrqLine(d) (d)->irq
-
-static u_long __init
-pci_get_base_cookie(struct pci_dev *pdev, int index)
-{
- u_long base = pdev->resource[index].start;
- return (base & ~0x7ul);
-}
-
-static int __init
-pci_get_base_address(struct pci_dev *pdev, int index, u_long *base)
-{
- u32 tmp;
-#define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
-
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base = tmp;
- ++index;
- if ((tmp & 0x7) == 0x4) {
-#if BITS_PER_LONG > 32
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base |= (((u_long)tmp) << 32);
-#endif
- ++index;
- }
- return index;
-#undef PCI_BAR_OFFSET
-}
-
/*==========================================================
**
@@ -589,24 +539,6 @@ static m_pool_s mp0 = {0, ___mp0_getp, _
#endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
-static void *m_calloc(int size, char *name)
-{
- u_long flags;
- void *m;
- NCR_LOCK_DRIVER(flags);
- m = __m_calloc(&mp0, size, name);
- NCR_UNLOCK_DRIVER(flags);
- return m;
-}
-
-static void m_free(void *ptr, int size, char *name)
-{
- u_long flags;
- NCR_LOCK_DRIVER(flags);
- __m_free(&mp0, ptr, size, name);
- NCR_UNLOCK_DRIVER(flags);
-}
-
/*
* DMAable pools.
*/
@@ -788,7 +720,7 @@ static m_addr_t __vtobus(m_bush_t bush,
#define __data_mapped SCp.phase
#define __data_mapping SCp.have_data_in
-static void __unmap_scsi_data(device_t dev, Scsi_Cmnd *cmd)
+static void __unmap_scsi_data(struct device *dev, Scsi_Cmnd *cmd)
{
enum dma_data_direction dma_dir =
(enum dma_data_direction)scsi_to_pci_dma_dir(cmd->sc_data_direction);
@@ -805,7 +737,7 @@ static void __unmap_scsi_data(device_t d
cmd->__data_mapped = 0;
}
-static u_long __map_scsi_single_data(device_t dev, Scsi_Cmnd *cmd)
+static u_long __map_scsi_single_data(struct device *dev, Scsi_Cmnd *cmd)
{
dma_addr_t mapping;
enum dma_data_direction dma_dir =
@@ -823,7 +755,7 @@ static u_long __map_scsi_single_data(dev
return mapping;
}
-static int __map_scsi_sg_data(device_t dev, Scsi_Cmnd *cmd)
+static int __map_scsi_sg_data(struct device *dev, Scsi_Cmnd *cmd)
{
int use_sg;
enum dma_data_direction dma_dir =
@@ -839,7 +771,7 @@ static int __map_scsi_sg_data(device_t d
return use_sg;
}
-static void __sync_scsi_data(device_t dev, Scsi_Cmnd *cmd)
+static void __sync_scsi_data(struct device *dev, Scsi_Cmnd *cmd)
{
enum dma_data_direction dma_dir =
(enum dma_data_direction)scsi_to_pci_dma_dir(cmd->sc_data_direction);
@@ -1402,7 +1334,7 @@ sym_read_Tekram_nvram (ncr_slot *np, u_s
**===================================================================
*/
#ifdef SCSI_NCR_NVRAM_SUPPORT
-static void __init ncr_get_nvram(ncr_device *devp, ncr_nvram *nvp)
+static void __init ncr_get_nvram(struct ncr_device *devp, ncr_nvram *nvp)
{
devp->nvram = nvp;
if (!nvp)
@@ -1847,592 +1779,4 @@ static int device_queue_depth(int unit,
p = ep;
}
return DEF_DEPTH;
-}
-
-/*===================================================================
-**
-** Print out information about driver configuration.
-**
-**===================================================================
-*/
-static void __init ncr_print_driver_setup(void)
-{
-#define YesNo(y) y ? 'y' : 'n'
- printk (NAME53C8XX ": setup=disc:%c,specf:%d,tags:%d,sync:%d,"
- "burst:%d,wide:%c,diff:%d,revprob:%c,buschk:0x%x\n",
- YesNo(driver_setup.disconnection),
- driver_setup.special_features,
- driver_setup.default_tags,
- driver_setup.default_sync,
- driver_setup.burst_max,
- YesNo(driver_setup.max_wide),
- driver_setup.diff_support,
- YesNo(driver_setup.reverse_probe),
- driver_setup.bus_check);
-
- printk (NAME53C8XX ": setup=mpar:%c,spar:%c,fsn=%c,verb:%d,debug:0x%x,"
- "led:%c,settle:%d,irqm:0x%x,nvram:0x%x,pcifix:0x%x\n",
- YesNo(driver_setup.master_parity),
- YesNo(driver_setup.scsi_parity),
- YesNo(driver_setup.force_sync_nego),
- driver_setup.verbose,
- driver_setup.debug,
- YesNo(driver_setup.led_pin),
- driver_setup.settle_delay,
- driver_setup.irqm,
- driver_setup.use_nvram,
- driver_setup.pci_fix_up);
-#undef YesNo
-}
-
-/*===================================================================
-**
-** SYM53C8XX devices description table.
-**
-**===================================================================
-*/
-
-static ncr_chip ncr_chip_table[] __initdata = SCSI_NCR_CHIP_TABLE;
-
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
-/*===================================================================
-**
-** Detect all NCR PQS/PDS boards and keep track of their bus nr.
-**
-** The NCR PQS or PDS card is constructed as a DEC bridge
-** behind which sit a proprietary NCR memory controller and
-** four or two 53c875s as separate devices. In its usual mode
-** of operation, the 875s are slaved to the memory controller
-** for all transfers. We can tell if an 875 is part of a
-** PQS/PDS or not since if it is, it will be on the same bus
-** as the memory controller. To operate with the Linux
-** driver, the memory controller is disabled and the 875s
-** freed to function independently. The only wrinkle is that
-** the preset SCSI ID (which may be zero) must be read in from
-** a special configuration space register of the 875.
-**
-**===================================================================
-*/
-#define SCSI_NCR_MAX_PQS_BUS 16
-static int pqs_bus[SCSI_NCR_MAX_PQS_BUS] __initdata = { 0 };
-
-static void __init ncr_detect_pqs_pds(void)
-{
- short index;
- pcidev_t dev = PCIDEV_NULL;
-
- for(index=0; index < SCSI_NCR_MAX_PQS_BUS; index++) {
- u_char tmp;
-
- dev = pci_find_device(0x101a, 0x0009, dev);
- if (dev == PCIDEV_NULL) {
- pqs_bus[index] = -1;
- break;
- }
- printk(KERN_INFO NAME53C8XX ": NCR PQS/PDS memory controller detected on bus %d\n", PciBusNumber(dev));
- pci_read_config_byte(dev, 0x44, &tmp);
- /* bit 1: allow individual 875 configuration */
- tmp |= 0x2;
- pci_write_config_byte(dev, 0x44, tmp);
- pci_read_config_byte(dev, 0x45, &tmp);
- /* bit 2: drive individual 875 interrupts to the bus */
- tmp |= 0x4;
- pci_write_config_byte(dev, 0x45, tmp);
-
- pqs_bus[index] = PciBusNumber(dev);
- }
-}
-#endif /* SCSI_NCR_PQS_PDS_SUPPORT */
-
-/*===================================================================
-**
-** Read and check the PCI configuration for any detected NCR
-** boards and save data for attaching after all boards have
-** been detected.
-**
-**===================================================================
-*/
-static int __init
-sym53c8xx_pci_init(Scsi_Host_Template *tpnt, pcidev_t pdev, ncr_device *device)
-{
- u_short vendor_id, device_id, command;
- u_char cache_line_size, latency_timer;
- u_char suggested_cache_line_size = 0;
- u_char pci_fix_up = driver_setup.pci_fix_up;
- u_char revision;
- u_int irq;
- u_long base, base_c, base_2, base_2_c, io_port;
- int i;
- ncr_chip *chip;
-
- printk(KERN_INFO NAME53C8XX ": at PCI bus %d, device %d, function %d\n",
- PciBusNumber(pdev),
- (int) (PciDeviceFn(pdev) & 0xf8) >> 3,
- (int) (PciDeviceFn(pdev) & 7));
-
-#ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- if (!pci_dma_supported(pdev, 0xffffffff)) {
- printk(KERN_WARNING NAME53C8XX
- "32 BIT PCI BUS DMA ADDRESSING NOT SUPPORTED\n");
- return -1;
- }
-#endif
-
- /*
- ** Read info from the PCI config space.
- ** pci_read_config_xxx() functions are assumed to be used for
- ** successfully detected PCI devices.
- */
- vendor_id = PciVendorId(pdev);
- device_id = PciDeviceId(pdev);
- irq = PciIrqLine(pdev);
-
- i = pci_get_base_address(pdev, 0, &io_port);
- io_port = pci_get_base_cookie(pdev, 0);
-
- base_c = pci_get_base_cookie(pdev, i);
- i = pci_get_base_address(pdev, i, &base);
-
- base_2_c = pci_get_base_cookie(pdev, i);
- (void) pci_get_base_address(pdev, i, &base_2);
-
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
- pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer);
-
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- /*
- ** Match the BUS number for PQS/PDS devices.
- ** Read the SCSI ID from a special register mapped
- ** into the configuration space of the individual
- ** 875s. This register is set up by the PQS bios
- */
- for(i = 0; i < SCSI_NCR_MAX_PQS_BUS && pqs_bus[i] != -1; i++) {
- u_char tmp;
- if (pqs_bus[i] == PciBusNumber(pdev)) {
- pci_read_config_byte(pdev, 0x84, &tmp);
- device->pqs_pds = 1;
- device->host_id = tmp;
- break;
- }
- }
-#endif /* SCSI_NCR_PQS_PDS_SUPPORT */
-
- /*
- ** If user excludes this chip, donnot initialize it.
- */
- for (i = 0 ; i < SCSI_NCR_MAX_EXCLUDES ; i++) {
- if (driver_setup.excludes[i] ==
- (io_port & PCI_BASE_ADDRESS_IO_MASK))
- return -1;
- }
- /*
- ** Check if the chip is supported
- */
- if ((device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (device_id == PCI_DEVICE_ID_LSI_53C1010_66)){
- printk(NAME53C8XX ": not initializing, device not supported\n");
- return -1;
- }
- chip = 0;
- for (i = 0; i < sizeof(ncr_chip_table)/sizeof(ncr_chip_table[0]); i++) {
- if (device_id != ncr_chip_table[i].device_id)
- continue;
- if (revision > ncr_chip_table[i].revision_id)
- continue;
- chip = &device->chip;
- memcpy(chip, &ncr_chip_table[i], sizeof(*chip));
- chip->revision_id = revision;
- break;
- }
-
- /*
- ** Ignore Symbios chips controlled by SISL RAID controller.
- ** This controller sets value 0x52414944 at RAM end - 16.
- */
-#if defined(__i386__) && !defined(SCSI_NCR_PCI_MEM_NOT_SUPPORTED)
- if (chip && (base_2_c & PCI_BASE_ADDRESS_MEM_MASK)) {
- unsigned int ram_size, ram_val;
- u_long ram_ptr;
-
- if (chip->features & FE_RAM8K)
- ram_size = 8192;
- else
- ram_size = 4096;
-
- ram_ptr = remap_pci_mem(base_2_c & PCI_BASE_ADDRESS_MEM_MASK,
- ram_size);
- if (ram_ptr) {
- ram_val = readl_raw(ram_ptr + ram_size - 16);
- unmap_pci_mem(ram_ptr, ram_size);
- if (ram_val == 0x52414944) {
- printk(NAME53C8XX": not initializing, "
- "driven by SISL RAID controller.\n");
- return -1;
- }
- }
- }
-#endif /* i386 and PCI MEMORY accessible */
-
- if (!chip) {
- printk(NAME53C8XX ": not initializing, device not supported\n");
- return -1;
- }
-
-#ifdef __powerpc__
- /*
- ** Fix-up for power/pc.
- ** Should not be performed by the driver.
- */
- if ((command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
- != (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": setting%s%s...\n",
- (command & PCI_COMMAND_IO) ? "" : " PCI_COMMAND_IO",
- (command & PCI_COMMAND_MEMORY) ? "" : " PCI_COMMAND_MEMORY");
- command |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-#endif /* __powerpc__ */
-
-#if defined(__i386__) && !defined(MODULE)
- if (!cache_line_size) {
- switch(boot_cpu_data.x86) {
- case 4: suggested_cache_line_size = 4; break;
- case 6:
- case 5: suggested_cache_line_size = 8; break;
- }
- }
-#endif /* __i386__ */
-
- /*
- ** Check availability of IO space, memory space.
- ** Enable master capability if not yet.
- **
- ** We shouldn't have to care about the IO region when
- ** we are using MMIO. But calling check_region() from
- ** both the ncr53c8xx and the sym53c8xx drivers prevents
- ** from attaching devices from the both drivers.
- ** If you have a better idea, let me know.
- */
-/* #ifdef SCSI_NCR_IOMAPPED */
-#if 1
- if (!(command & PCI_COMMAND_IO)) {
- printk(NAME53C8XX ": I/O base address (0x%lx) disabled.\n",
- (long) io_port);
- io_port = 0;
- }
-#endif
- if (!(command & PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": PCI_COMMAND_MEMORY not set.\n");
- base = 0;
- base_2 = 0;
- }
- io_port &= PCI_BASE_ADDRESS_IO_MASK;
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- base_2 &= PCI_BASE_ADDRESS_MEM_MASK;
-
-/* #ifdef SCSI_NCR_IOMAPPED */
-#if 1
- if (io_port && check_region (io_port, 128)) {
- printk(NAME53C8XX ": IO region 0x%lx[0..127] is in use\n",
- (long) io_port);
- io_port = 0;
- }
- if (!io_port)
- return -1;
-#endif
-#ifndef SCSI_NCR_IOMAPPED
- if (!base) {
- printk(NAME53C8XX ": MMIO base address disabled.\n");
- return -1;
- }
-#endif
-
-/* The ncr53c8xx driver never did set the PCI parity bit. */
-/* Since setting this bit is known to trigger spurious MDPE */
-/* errors on some 895 controllers when noise on power lines is */
-/* too high, I donnot want to change previous ncr53c8xx driver */
-/* behaviour on that point (the sym53c8xx driver set this bit). */
-#if 0
- /*
- ** Set MASTER capable and PARITY bit, if not yet.
- */
- if ((command & (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY))
- != (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY)) {
- printk(NAME53C8XX ": setting%s%s...(fix-up)\n",
- (command & PCI_COMMAND_MASTER) ? "" : " PCI_COMMAND_MASTER",
- (command & PCI_COMMAND_PARITY) ? "" : " PCI_COMMAND_PARITY");
- command |= (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-#else
- /*
- ** Set MASTER capable if not yet.
- */
- if ((command & PCI_COMMAND_MASTER) != PCI_COMMAND_MASTER) {
- printk(NAME53C8XX ": setting PCI_COMMAND_MASTER...(fix-up)\n");
- command |= PCI_COMMAND_MASTER;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-#endif
-
- /*
- ** Fix some features according to driver setup.
- */
- if (!(driver_setup.special_features & 1))
- chip->features &= ~FE_SPECIAL_SET;
- else {
- if (driver_setup.special_features & 2)
- chip->features &= ~FE_WRIE;
- if (driver_setup.special_features & 4)
- chip->features &= ~FE_NOPM;
- }
-
- /*
- ** Some features are required to be enabled in order to
- ** work around some chip problems. :) ;)
- ** (ITEM 12 of a DEL about the 896 I haven't yet).
- ** We must ensure the chip will use WRITE AND INVALIDATE.
- ** The revision number limit is for now arbitrary.
- */
- if (device_id == PCI_DEVICE_ID_NCR_53C896 && revision <= 0x10) {
- chip->features |= (FE_WRIE | FE_CLSE);
- pci_fix_up |= 3; /* Force appropriate PCI fix-up */
- }
-
-#ifdef SCSI_NCR_PCI_FIX_UP_SUPPORT
- /*
- ** Try to fix up PCI config according to wished features.
- */
- if ((pci_fix_up & 1) && (chip->features & FE_CLSE) &&
- !cache_line_size && suggested_cache_line_size) {
- cache_line_size = suggested_cache_line_size;
- pci_write_config_byte(pdev,
- PCI_CACHE_LINE_SIZE, cache_line_size);
- printk(NAME53C8XX ": PCI_CACHE_LINE_SIZE set to %d (fix-up).\n",
- cache_line_size);
- }
-
- if ((pci_fix_up & 2) && cache_line_size &&
- (chip->features & FE_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
- printk(NAME53C8XX": setting PCI_COMMAND_INVALIDATE (fix-up)\n");
- command |= PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
-
- /*
- ** Tune PCI LATENCY TIMER according to burst max length transfer.
- ** (latency timer >= burst length + 6, we add 10 to be quite sure)
- */
-
- if (chip->burst_max && (latency_timer == 0 || (pci_fix_up & 4))) {
- u_char lt = (1 << chip->burst_max) + 6 + 10;
- if (latency_timer < lt) {
- printk(NAME53C8XX
- ": changing PCI_LATENCY_TIMER from %d to %d.\n",
- (int) latency_timer, (int) lt);
- latency_timer = lt;
- pci_write_config_byte(pdev,
- PCI_LATENCY_TIMER, latency_timer);
- }
- }
-
-#endif /* SCSI_NCR_PCI_FIX_UP_SUPPORT */
-
- /*
- ** Initialise ncr_device structure with items required by ncr_attach.
- */
- device->dev = &pdev->dev;
- device->slot.bus = PciBusNumber(pdev);
- device->slot.device_fn = PciDeviceFn(pdev);
- device->slot.base = base;
- device->slot.base_2 = base_2;
- device->slot.base_c = base_c;
- device->slot.base_2_c = base_2_c;
- device->slot.io_port = io_port;
- device->slot.irq = irq;
- device->attach_done = 0;
-
- return 0;
-}
-
-/*===================================================================
-**
-** Detect all 53c8xx hosts and then attach them.
-**
-** If we are using NVRAM, once all hosts are detected, we need to
-** check any NVRAM for boot order in case detect and boot order
-** differ and attach them using the order in the NVRAM.
-**
-** If no NVRAM is found or data appears invalid attach boards in
-** the order they are detected.
-**
-**===================================================================
-*/
-static int __init
-sym53c8xx__detect(Scsi_Host_Template *tpnt, u_short ncr_chip_ids[], int chips)
-{
- pcidev_t pcidev;
- int i, j, hosts, count;
- int attach_count = 0;
- ncr_device *devtbl, *devp;
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_nvram nvram0, nvram, *nvp;
-#endif
-
-#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
- ncr_debug = driver_setup.debug;
-#endif
- if (initverbose >= 2)
- ncr_print_driver_setup();
-
- /*
- ** Allocate the device table since we donnot want to
- ** overflow the kernel stack.
- ** 1 x 4K PAGE is enough for more than 40 devices for i386.
- */
- devtbl = m_calloc(PAGE_SIZE, "devtbl");
- if (!devtbl)
- return 0;
-
- /*
- ** Detect all NCR PQS/PDS memory controllers.
- */
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- ncr_detect_pqs_pds();
-#endif
-
- /*
- ** Detect all 53c8xx hosts.
- ** Save the first Symbios NVRAM content if any
- ** for the boot order.
- */
- hosts = PAGE_SIZE / sizeof(*devtbl);
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- nvp = (driver_setup.use_nvram & 0x1) ? &nvram0 : 0;
-#endif
- j = 0;
- count = 0;
- pcidev = PCIDEV_NULL;
- while (1) {
- char *msg = "";
- if (count >= hosts)
- break;
- if (j >= chips)
- break;
- i = driver_setup.reverse_probe ? chips - 1 - j : j;
- pcidev = pci_find_device(PCI_VENDOR_ID_NCR, ncr_chip_ids[i],
- pcidev);
- if (pcidev == PCIDEV_NULL) {
- ++j;
- continue;
- }
- if (pci_enable_device(pcidev)) /* @!*!$&*!%-*#;! */
- continue;
- /* Some HW as the HP LH4 may report twice PCI devices */
- for (i = 0; i < count ; i++) {
- if (devtbl[i].slot.bus == PciBusNumber(pcidev) &&
- devtbl[i].slot.device_fn == PciDeviceFn(pcidev))
- break;
- }
- if (i != count) /* Ignore this device if we already have it */
- continue;
- devp = &devtbl[count];
- devp->host_id = driver_setup.host_id;
- devp->attach_done = 0;
- if (sym53c8xx_pci_init(tpnt, pcidev, devp)) {
- continue;
- }
- ++count;
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (nvp) {
- ncr_get_nvram(devp, nvp);
- switch(nvp->type) {
- case SCSI_NCR_SYMBIOS_NVRAM:
- /*
- * Switch to the other nvram buffer, so that
- * nvram0 will contain the first Symbios
- * format NVRAM content with boot order.
- */
- nvp = &nvram;
- msg = "with Symbios NVRAM";
- break;
- case SCSI_NCR_TEKRAM_NVRAM:
- msg = "with Tekram NVRAM";
- break;
- }
- }
-#endif
-#ifdef SCSI_NCR_PQS_PDS_SUPPORT
- if (devp->pqs_pds)
- msg = "(NCR PQS/PDS)";
-#endif
- printk(KERN_INFO NAME53C8XX ": 53c%s detected %s\n",
- devp->chip.name, msg);
- }
-
- /*
- ** If we have found a SYMBIOS NVRAM, use first the NVRAM boot
- ** sequence as device boot order.
- ** check devices in the boot record against devices detected.
- ** attach devices if we find a match. boot table records that
- ** do not match any detected devices will be ignored.
- ** devices that do not match any boot table will not be attached
- ** here but will attempt to be attached during the device table
- ** rescan.
- */
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- if (!nvp || nvram0.type != SCSI_NCR_SYMBIOS_NVRAM)
- goto next;
- for (i = 0; i < 4; i++) {
- Symbios_host *h = &nvram0.data.Symbios.host[i];
- for (j = 0 ; j < count ; j++) {
- devp = &devtbl[j];
- if (h->device_fn != devp->slot.device_fn ||
- h->bus_nr != devp->slot.bus ||
- h->device_id != devp->chip.device_id)
- continue;
- if (devp->attach_done)
- continue;
- if (h->flags & SYMBIOS_INIT_SCAN_AT_BOOT) {
- ncr_get_nvram(devp, nvp);
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
-#if 0 /* Restore previous behaviour of ncr53c8xx driver */
- else if (!(driver_setup.use_nvram & 0x80))
- printk(KERN_INFO NAME53C8XX
- ": 53c%s state OFF thus not attached\n",
- devp->chip.name);
-#endif
- else
- continue;
-
- devp->attach_done = 1;
- break;
- }
- }
-next:
-#endif
-
- /*
- ** Rescan device list to make sure all boards attached.
- ** Devices without boot records will not be attached yet
- ** so try to attach them here.
- */
- for (i= 0; i < count; i++) {
- devp = &devtbl[i];
- if (!devp->attach_done) {
-#ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_get_nvram(devp, nvp);
-#endif
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- }
-
- m_free(devtbl, PAGE_SIZE, "devtbl");
-
- return attach_count;
}
Index: drivers/scsi/sym53c8xx_defs.h
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/sym53c8xx_defs.h,v
retrieving revision 1.3
diff -u -p -r1.3 sym53c8xx_defs.h
--- drivers/scsi/sym53c8xx_defs.h 11 Sep 2003 18:50:08 -0000 1.3
+++ drivers/scsi/sym53c8xx_defs.h 22 Sep 2003 18:10:24 -0000
@@ -951,7 +951,7 @@ struct Symbios_nvram {
/* Controller set up 20 bytes */
u_char v_major; /* 0x00 */
u_char v_minor; /* 0x30 */
- u_int32 boot_crc;
+ u32 boot_crc;
u_short flags;
#define SYMBIOS_SCAM_ENABLE (1)
#define SYMBIOS_PARITY_ENABLE (1<<1)
@@ -1187,7 +1187,7 @@ struct ncr_reg {
#define WRIE 0x01 /* mod: write and invalidate enable */
/* bits 4-7 rsvd for C1010 */
-/*1c*/ u_int32 nc_temp; /* ### Temporary stack */
+/*1c*/ u32 nc_temp; /* ### Temporary stack */
/*20*/ u_char nc_dfifo;
/*21*/ u_char nc_ctest4;
@@ -1200,10 +1200,10 @@ struct ncr_reg {
/* bits 0-1, 3-7 rsvd for C1010 */
/*23*/ u_char nc_ctest6;
-/*24*/ u_int32 nc_dbc; /* ### Byte count and command */
-/*28*/ u_int32 nc_dnad; /* ### Next command register */
-/*2c*/ u_int32 nc_dsp; /* --> Script Pointer */
-/*30*/ u_int32 nc_dsps; /* --> Script pointer save/opcode#2 */
+/*24*/ u32 nc_dbc; /* ### Byte count and command */
+/*28*/ u32 nc_dnad; /* ### Next command register */
+/*2c*/ u32 nc_dsp; /* --> Script Pointer */
+/*30*/ u32 nc_dsps; /* --> Script pointer save/opcode#2 */
/*34*/ u_char nc_scratcha; /* Temporary register a */
/*35*/ u_char nc_scratcha1;
@@ -1232,7 +1232,7 @@ struct ncr_reg {
#define NOCOM 0x01 /* cmd: protect sfbr while reselect */
/* bits 0-1 rsvd for C1010 */
-/*3c*/ u_int32 nc_adder;
+/*3c*/ u32 nc_adder;
/*40*/ u_short nc_sien; /* -->: interrupt enable */
/*42*/ u_short nc_sist; /* <--: interrupt status */
@@ -1311,13 +1311,13 @@ struct ncr_reg {
/*5f*/ u_char nc_scr3; /* */
/*60*/ u_char nc_scrx[64]; /* Working register C-R */
-/*a0*/ u_int32 nc_mmrs; /* Memory Move Read Selector */
-/*a4*/ u_int32 nc_mmws; /* Memory Move Write Selector */
-/*a8*/ u_int32 nc_sfs; /* Script Fetch Selector */
-/*ac*/ u_int32 nc_drs; /* DSA Relative Selector */
-/*b0*/ u_int32 nc_sbms; /* Static Block Move Selector */
-/*b4*/ u_int32 nc_dbms; /* Dynamic Block Move Selector */
-/*b8*/ u_int32 nc_dnad64; /* DMA Next Address 64 */
+/*a0*/ u32 nc_mmrs; /* Memory Move Read Selector */
+/*a4*/ u32 nc_mmws; /* Memory Move Write Selector */
+/*a8*/ u32 nc_sfs; /* Script Fetch Selector */
+/*ac*/ u32 nc_drs; /* DSA Relative Selector */
+/*b0*/ u32 nc_sbms; /* Static Block Move Selector */
+/*b4*/ u32 nc_dbms; /* Dynamic Block Move Selector */
+/*b8*/ u32 nc_dnad64; /* DMA Next Address 64 */
/*bc*/ u_short nc_scntl4; /* C1010 only */
#define U3EN 0x80 /* Enable Ultra 3 */
#define AIPEN 0x40 /* Allow check upper byte lanes */
@@ -1329,8 +1329,8 @@ struct ncr_reg {
/*be*/ u_char nc_aipcntl0; /* Epat Control 1 C1010 only */
/*bf*/ u_char nc_aipcntl1; /* AIP Control C1010_66 Only */
-/*c0*/ u_int32 nc_pmjad1; /* Phase Mismatch Jump Address 1 */
-/*c4*/ u_int32 nc_pmjad2; /* Phase Mismatch Jump Address 2 */
+/*c0*/ u32 nc_pmjad1; /* Phase Mismatch Jump Address 1 */
+/*c4*/ u32 nc_pmjad2; /* Phase Mismatch Jump Address 2 */
/*c8*/ u_char nc_rbc; /* Remaining Byte Count */
/*c9*/ u_char nc_rbc1; /* */
/*ca*/ u_char nc_rbc2; /* */
@@ -1340,22 +1340,22 @@ struct ncr_reg {
/*cd*/ u_char nc_ua1; /* */
/*ce*/ u_char nc_ua2; /* */
/*cf*/ u_char nc_ua3; /* */
-/*d0*/ u_int32 nc_esa; /* Entry Storage Address */
+/*d0*/ u32 nc_esa; /* Entry Storage Address */
/*d4*/ u_char nc_ia; /* Instruction Address */
/*d5*/ u_char nc_ia1;
/*d6*/ u_char nc_ia2;
/*d7*/ u_char nc_ia3;
-/*d8*/ u_int32 nc_sbc; /* SCSI Byte Count (3 bytes only) */
-/*dc*/ u_int32 nc_csbc; /* Cumulative SCSI Byte Count */
+/*d8*/ u32 nc_sbc; /* SCSI Byte Count (3 bytes only) */
+/*dc*/ u32 nc_csbc; /* Cumulative SCSI Byte Count */
/* Following for C1010 only */
/*e0*/ u_short nc_crcpad; /* CRC Value */
/*e2*/ u_char nc_crccntl0; /* CRC control register */
#define SNDCRC 0x10 /* Send CRC Request */
/*e3*/ u_char nc_crccntl1; /* CRC control register */
-/*e4*/ u_int32 nc_crcdata; /* CRC data register */
-/*e8*/ u_int32 nc_e8_; /* rsvd */
-/*ec*/ u_int32 nc_ec_; /* rsvd */
+/*e4*/ u32 nc_crcdata; /* CRC data register */
+/*e8*/ u32 nc_e8_; /* rsvd */
+/*ec*/ u32 nc_ec_; /* rsvd */
/*f0*/ u_short nc_dfbc; /* DMA FIFO byte count */
};
@@ -1370,7 +1370,7 @@ struct ncr_reg {
#define REGJ(p,r) (offsetof(struct ncr_reg, p ## r))
#define REG(r) REGJ (nc_, r)
-typedef u_int32 ncrcmd;
+typedef u32 ncrcmd;
/*-----------------------------------------------------------
**
@@ -1422,8 +1422,8 @@ typedef u_int32 ncrcmd;
#define SCR_CHMOV_TBL (0x10000000)
struct scr_tblmove {
- u_int32 size;
- u_int32 addr;
+ u32 size;
+ u32 addr;
};
/*-----------------------------------------------------------
@@ -1464,7 +1464,7 @@ struct scr_tblsel {
#endif
#define SCR_JMP_REL 0x04000000
-#define SCR_ID(id) (((u_int32)(id)) << 16)
+#define SCR_ID(id) (((u32)(id)) << 16)
/*-----------------------------------------------------------
**
Index: drivers/scsi/zalon.c
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/scsi/zalon.c,v
retrieving revision 1.5
diff -u -p -r1.5 zalon.c
--- drivers/scsi/zalon.c 20 Sep 2003 22:14:25 -0000 1.5
+++ drivers/scsi/zalon.c 22 Sep 2003 18:12:41 -0000
@@ -108,7 +108,7 @@ zalon_probe(struct parisc_device *dev)
unsigned long io_port = zalon + GSC_SCSI_ZALON_OFFSET;
static int unit = 0;
struct Scsi_Host *host;
- ncr_device device;
+ struct ncr_device device;
__raw_writel(CMD_RESET, zalon + IO_MODULE_IO_COMMAND);
while (!(__raw_readl(zalon + IO_MODULE_IO_STATUS) & IOSTATUS_RY))
@@ -133,7 +133,7 @@ zalon_probe(struct parisc_device *dev)
if (zalon_vers == 0)
printk(KERN_WARNING "%s: Zalon 1.1 or earlier\n", __FUNCTION__);
- memset(&device, 0, sizeof(ncr_device));
+ memset(&device, 0, sizeof(struct ncr_device));
/* The following three are needed before any other access. */
writeb(0x20, io_port + 0x38); /* DCNTL_REG, EA */
