/* $NetBSD: ofw_autoconf.c,v 1.26 2023/09/23 21:26:16 andvar Exp $ */

/* $NetBSD: ofw_autoconf.c,v 1.26 2023/09/23 21:26:16 andvar Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ofw_autoconf.c,v 1.26 2023/09/23 21:26:16 andvar Exp $");

#ifdef ofppc
#include "gtpci.h"
#endif

#include <sys/param.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/systm.h>

#include <uvm/uvm_extern.h>

#include <machine/autoconf.h>
#include <sys/bus.h>

#include <dev/ofw/openfirm.h>
#include <dev/marvell/marvellvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#if NGTPCI > 0
#include <dev/marvell/gtpcivar.h>
#endif
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <powerpc/oea/ofw_rasconsvar.h>

#include <machine/pci_machdep.h>

#include <prop/proplib.h>

extern char bootpath[256];
char cbootpath[256];
static int boot_node = 0; /* points at boot device if we netboot */

static void canonicalize_bootpath(void);

/*
* Determine device configuration for a machine.
*/
void
cpu_configure(void)
{
#if NWSDISPLAY > 0
rascons_add_rom_font();
#endif
init_interrupt();
canonicalize_bootpath();

if (config_rootfound("mainbus", NULL) == NULL)
panic("configure: mainbus not configured");

genppc_cpu_configure();
}

static void
canonicalize_bootpath(void)
{
int node, len;
char *p, *lastp;
char last[32], type[32];

/*
* If the bootpath doesn't start with a / then it isn't
* an OFW path and probably is an alias, so look up the alias
* and regenerate the full bootpath so device_register will work.
*/
if (bootpath[0] != '/' && bootpath[0] != '\0') {
int aliases = OF_finddevice("/aliases");
char tmpbuf[100];
char aliasbuf[256];
if (aliases != 0) {
char *cp1, *cp2, *cp;
char saved_ch = '\0';
cp1 = strchr(bootpath, ':');
cp2 = strchr(bootpath, ',');
cp = cp1;
if (cp1 == NULL || (cp2 != NULL && cp2 < cp1))
cp = cp2;
tmpbuf[0] = '\0';
if (cp != NULL) {
strcpy(tmpbuf, cp);
saved_ch = *cp;
*cp = '\0';
}
len = OF_getprop(aliases, bootpath, aliasbuf,
sizeof(aliasbuf));
if (len > 0) {
if (aliasbuf[len-1] == '\0')
len--;
memcpy(bootpath, aliasbuf, len);
strcpy(&bootpath[len], tmpbuf);
} else {
*cp = saved_ch;
}
}
}

/*
* Strip kernel name. bootpath contains "OF-path"/"kernel".
*
* for example:
* /bandit@F2000000/gc@10/53c94@10000/sd@0,0/netbsd (OF-1.x)
* /pci/mac-io/ata-3@2000/disk@0:0/netbsd.new (OF-3.x)
*/
strcpy(cbootpath, bootpath);

if ((node = OF_finddevice("/options")) == -1 ||
OF_getprop(node, "qemu_boot_hack", type, sizeof(type) - 1) == -1 ||
type[0] != 'y') {
while ((node = OF_finddevice(cbootpath)) == -1) {
if ((p = strrchr(cbootpath, '/')) == NULL)
break;
*p = '\0';
}
} else {
node = -1;
}

printf("bootpath: %s\n", bootpath);
if (node == -1) {
/* Cannot canonicalize... use bootpath anyway. */
strcpy(cbootpath, bootpath);

return;
}

/* see if we netbooted */
len = OF_getprop(node, "device_type", type, sizeof(type) - 1);
if (len > -1) {
type[len] = 0;
if (strcmp(type, "network") == 0) {
boot_node = node;
}
}

/*
* cbootpath is a valid OF path. Use package-to-path to
* canonicalize pathname.
*/

/* Back up the last component for later use. */
if ((p = strrchr(cbootpath, '/')) != NULL)
strcpy(last, p + 1);
else
last[0] = '\0';

memset(cbootpath, 0, sizeof(cbootpath));
OF_package_to_path(node, cbootpath, sizeof(cbootpath) - 1);

/*
* OF_1.x (at least) always returns addr == 0 for
* SCSI disks (i.e. "/bandit@.../.../sd@0,0").
* also check for .../disk@ which some Adaptec firmware uses
*/
lastp = strrchr(cbootpath, '/');
if (lastp != NULL) {
lastp++;
if ((strncmp(lastp, "sd@", 3) == 0
&& strncmp(last, "sd@", 3) == 0) ||
(strncmp(lastp, "disk@", 5) == 0
&& strncmp(last, "disk@", 5) == 0))
strcpy(lastp, last);
} else {
lastp = cbootpath;
}

/*
* At this point, cbootpath contains like:
* "/pci@80000000/mac-io@10/ata-3@20000/disk"
*
* The last component may have no address... so append it.
*/
if (strchr(lastp, '@') == NULL) {
/* Append it. */
if ((p = strrchr(last, '@')) != NULL)
strcat(cbootpath, p);
}

if ((p = strrchr(lastp, ':')) != NULL) {
*p++ = '\0';
/* booted_partition = *p - '0'; XXX correct? */
}
}

/*
* device_register is called from config_attach as each device is
* attached. We use it to find the NetBSD device corresponding to the
* known OF boot device.
*/
void
device_register(device_t dev, void *aux)
{
static device_t parent;
static char *bp = bootpath + 1, *cp = cbootpath;
unsigned long addr, addr2;
char *p;
#if NGTPCI > 0
struct powerpc_bus_space *gtpci_mem_bs_tag = NULL;
#endif

/* Skip over devices not represented in the OF tree. */
if (device_is_a(dev, "mainbus")) {
parent = dev;
return;
}

/* skip over CPUs */
if (device_is_a(dev, "cpu")) {
return;
}

if (device_is_a(dev, "valkyriefb")) {
struct confargs *ca = aux;
prop_dictionary_t dict;

dict = device_properties(dev);
copy_disp_props(dev, ca->ca_node, dict);
}

/* cannot read useful display properties for platinum */
if (device_is_a(dev, "platinumfb")) {
return;
}

#if NGTPCI > 0
if (device_is_a(dev, "gtpci")) {
extern struct gtpci_prot gtpci0_prot, gtpci1_prot;
extern struct powerpc_bus_space
gtpci0_io_bs_tag, gtpci0_mem_bs_tag,
gtpci1_io_bs_tag, gtpci1_mem_bs_tag;
extern struct genppc_pci_chipset
genppc_gtpci0_chipset, genppc_gtpci1_chipset;

struct marvell_attach_args *mva = aux;
struct gtpci_prot *gtpci_prot;
struct powerpc_bus_space *gtpci_io_bs_tag;
struct genppc_pci_chipset *genppc_gtpci_chipset;
prop_dictionary_t dict = device_properties(dev);
prop_data_t prot, io_bs_tag, mem_bs_tag, pc;
int iostart, ioend;

if (mva->mva_unit == 0) {
gtpci_prot = &gtpci0_prot;
gtpci_io_bs_tag = &gtpci0_io_bs_tag;
gtpci_mem_bs_tag = &gtpci0_mem_bs_tag;
genppc_gtpci_chipset = &genppc_gtpci0_chipset;
iostart = 0;
ioend = 0;
} else {
gtpci_prot = &gtpci1_prot;
gtpci_io_bs_tag = &gtpci1_io_bs_tag;
gtpci_mem_bs_tag = &gtpci1_mem_bs_tag;
genppc_gtpci_chipset = &genppc_gtpci1_chipset;
iostart = 0x1400;
ioend = 0xffff;
}

prot = prop_data_create_data_nocopy(
gtpci_prot, sizeof(struct gtpci_prot));
KASSERT(prot != NULL);
prop_dictionary_set(dict, "prot", prot);
prop_object_release(prot);

io_bs_tag = prop_data_create_data_nocopy(
gtpci_io_bs_tag, sizeof(struct powerpc_bus_space));
KASSERT(io_bs_tag != NULL);
prop_dictionary_set(dict, "io-bus-tag", io_bs_tag);
prop_object_release(io_bs_tag);
mem_bs_tag = prop_data_create_data_nocopy(
gtpci_mem_bs_tag, sizeof(struct powerpc_bus_space));
KASSERT(mem_bs_tag != NULL);
prop_dictionary_set(dict, "mem-bus-tag", mem_bs_tag);
prop_object_release(mem_bs_tag);

genppc_gtpci_chipset->pc_conf_v = device_private(dev);
pc = prop_data_create_data_nocopy(genppc_gtpci_chipset,
sizeof(struct genppc_pci_chipset));
KASSERT(pc != NULL);
prop_dictionary_set(dict, "pci-chipset", pc);
prop_object_release(pc);

prop_dictionary_set_uint64(dict, "iostart", iostart);
prop_dictionary_set_uint64(dict, "ioend", ioend);
prop_dictionary_set_uint64(dict, "memstart",
gtpci_mem_bs_tag->pbs_base);
prop_dictionary_set_uint64(dict, "memend",
gtpci_mem_bs_tag->pbs_limit - 1);
prop_dictionary_set_uint32(dict, "cache-line-size",
CACHELINESIZE);
}
#endif
if (device_is_a(dev, "atapibus") ||
#ifndef PMAC_G5
device_is_a(dev, "pci") ||
#endif
device_is_a(dev, "scsibus") || device_is_a(dev, "atabus"))
return;

if (device_is_a(device_parent(dev), "pci")) {
struct pci_attach_args *pa = aux;
prop_dictionary_t dict;
prop_bool_t b;
int node;
char name[32];

dict = device_properties(dev);
node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag);

/* enable configuration of irq 14/15 for VIA native IDE */
if (device_is_a(dev, "viaide") &&
strncmp(model_name, "Pegasos", 7) == 0) {
b = prop_bool_create(true);
KASSERT(b != NULL);
(void)prop_dictionary_set(dict,
"use-compat-native-irq", b);
prop_object_release(b);
}

if (node != 0) {
int pci_class = 0;

prop_dictionary_set_uint32(dict, "device_node", node);

if (node == boot_node) {
/* we netbooted from whatever this is */
booted_device = dev;
}
/* see if this is going to be console */
memset(name, 0, sizeof(name));
OF_getprop(node, "device_type", name, sizeof(name));

OF_getprop(node, "class-code", &pci_class,
sizeof pci_class);
pci_class = (pci_class >> 16) & 0xff;

if (strcmp(name, "display") == 0 ||
strcmp(name, "ATY,DDParent") == 0 ||
pci_class == PCI_CLASS_DISPLAY) {
/* setup display properties for fb driver */
prop_dictionary_set_bool(dict, "is_console", 0);
copy_disp_props(dev, node, dict);
}
if (pci_class == PCI_CLASS_NETWORK) {
of_to_dataprop(dict, node, "local-mac-address",
"mac-address");
of_to_dataprop(dict, node, "shared-pins",
"shared-pins");
}
}
#ifdef macppc
/*
* XXX
* some macppc boxes have onboard devices where parts or all of
* the PCI_INTERRUPT register are hardwired to 0
*/
if (pa->pa_intrpin == 0)
pa->pa_intrpin = 1;
#endif
}

if (booted_device)
return;

/*
* Skip over devices that are really just layers of NetBSD
* autoconf(9) we should just skip as they do not have any
* OFW devices.
* XXX except on G5, where we have /ht/pci* instead of /pci*
*/
if (device_is_a(device_parent(dev), "atapibus") ||
device_is_a(device_parent(dev), "atabus") ||
#ifndef PMAC_G5
device_is_a(device_parent(dev), "pci") ||
#endif
device_is_a(device_parent(dev), "scsibus")) {
if (device_parent(device_parent(dev)) != parent) {
return;
}
} else {
if (device_parent(dev) != parent)
return;
}

/*
* Get the address part of the current path component. The
* last component of the canonical bootpath may have no
* address (eg, "disk"), in which case we need to get the
* address from the original bootpath instead.
*/
p = strchr(cp, '@');
if (!p) {
if (bp)
p = strchr(bp, '@');
if (!p)
addr = 0;
else
addr = strtoul(p + 1, &p, 16);
} else
addr = strtoul(p + 1, &p, 16);

/* if the current path has more address, grab that too */
if (p && *p == ',')
addr2 = strtoul(p + 1, &p, 16);
else
addr2 = 0;

if (device_is_a(device_parent(dev), "mainbus")) {
struct confargs *ca = aux;
if (strcmp(ca->ca_name, "ofw") == 0) /* XXX */
return;
if (strcmp(ca->ca_name, "gt") == 0)
parent = dev;
if (addr != ca->ca_reg[0])
return;
if (addr2 != 0 && addr2 != ca->ca_reg[1])
return;
} else if (device_is_a(device_parent(dev), "gt")) {
/*
* Special handle for MV64361 on PegasosII(ofppc).
*/
if (device_is_a(dev, "mvgbec")) {
/*
* Fix cp to /port@N from /ethernet/portN. (N is 0...2)
*/
static char fix_cp[8] = "/port@N";

if (strlen(cp) != 15 ||
strncmp(cp, "/ethernet/port", 14) != 0)
return;
fix_cp[7] = *(cp + 15);
p = fix_cp;
#if NGTPCI > 0
} else if (device_is_a(dev, "gtpci")) {
if (gtpci_mem_bs_tag != NULL &&
addr != gtpci_mem_bs_tag->pbs_base)
return;
#endif
} else
return;
} else if (device_is_a(device_parent(dev), "pci")) {
struct pci_attach_args *pa = aux;

if (addr != pa->pa_device ||
addr2 != pa->pa_function)
return;
} else if (device_is_a(device_parent(dev), "obio")) {
struct confargs *ca = aux;

if (addr != ca->ca_reg[0])
return;
} else if (device_is_a(device_parent(dev), "scsibus") ||
device_is_a(device_parent(dev), "atapibus")) {
struct scsipibus_attach_args *sa = aux;

/* periph_target is target for scsi, drive # for atapi */
if (addr != sa->sa_periph->periph_target)
return;
} else if (device_is_a(device_parent(device_parent(dev)), "pciide") ||
device_is_a(device_parent(device_parent(dev)), "viaide") ||
device_is_a(device_parent(device_parent(dev)), "slide")) {
struct ata_device *adev = aux;

if (addr != adev->adev_channel ||
addr2 != adev->adev_drv_data->drive)
return;
} else if (device_is_a(device_parent(device_parent(dev)), "wdc")) {
struct ata_device *adev = aux;

if (addr != adev->adev_drv_data->drive)
return;
} else if (device_is_a(dev, "pci")) {
if (addr != device_unit(dev))
return;
} else if (device_is_a(device_parent(dev), "atabus")) {
/*
* XXX
* on svwsata this is the channel number and we ignore the
* drive number which is always 0 anyway
* needs to be revisited for other (S)ATA cards
*/
struct ata_device *adev = aux;
if (addr != adev->adev_channel)
return;
/* we have our match, cut off the rest */
if (p) *p = 0;
} else
return;

/* If we reach this point, then dev is a match for the current
* path component.
*/
if (p && *p) {
parent = dev;
cp = p;
bp = strchr(bp, '/');
if (bp)
bp++;
return;
} else {
booted_device = dev;
booted_partition = 0; /* XXX -- should be extracted from bootpath */
return;
}
}

/*
* Setup root device.
* Configure swap area.
*/
void
cpu_rootconf(void)
{
printf("boot device: %s\n",
booted_device ? device_xname(booted_device) : "<unknown>");

rootconf();
}

/*
* Find OF-device corresponding to the PCI device.
*/
int
pcidev_to_ofdev(pci_chipset_tag_t pc, pcitag_t tag)
{
int bus, dev, func;
u_int reg[5];
int p, q;
int l, b, d, f;

pci_decompose_tag(pc, tag, &bus, &dev, &func);

for (q = OF_peer(0); q; q = p) {
l = OF_getprop(q, "assigned-addresses", reg, sizeof(reg));
if (l > 4) {
b = (reg[0] >> 16) & 0xff;
d = (reg[0] >> 11) & 0x1f;
f = (reg[0] >> 8) & 0x07;

if (b == bus && d == dev && f == func)
return q;
}
if ((p = OF_child(q)))
continue;
while (q) {
if ((p = OF_peer(q)))
break;
q = OF_parent(q);
}
}
return 0;
}