* Copyright (c) 2002 Steve Rumble

/* $NetBSD: picreg.h,v 1.5 2006/03/08 23:46:24 lukem Exp $ */

/*
* Copyright (c) 2002 Steve Rumble
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*/

#ifndef _ARCH_SGIMIPS_DEV_PICREG_H_
#define _ARCH_SGIMIPS_DEV_PICREG_H_

#define PIC_CPUCTRL 0x00 /* CPU control */

#define PIC_CPUCTRL_REFRESH 0x0001 /* refresh enable */
#define PIC_CPUCTRL_BIGENDIAN 0x0002 /* big endian mode */
#define PIC_CPUCTRL_DBREFILL 0x0004 /* data block refill */
#define PIC_CPUCTRL_IBREFILL 0x0008 /* instruction block refill */
#define PIC_CPUCTRL_GDMAINTR 0x0010 /* gfx intr on completion */
#define PIC_CPUCTRL_GDMASYNC 0x0020 /* gfx dma sync */
#define PIC_CPUCTRL_FREFRESH 0x0040 /* fast refresh on 33 MHz+ gio */
#define PIC_CPUCTRL_NOVMEERR 0x0080 /* disables vme bus errors */
#define PIC_CPUCTRL_FREFRESHB 0x0080 /* fast refresh on revs. a+b */
#define PIC_CPUCTRL_GR2 0x0100 /* gio gr2 mode (?) */
#define PIC_CPUCTRL_SYSRESET 0x0200 /* vme sysreset line */
#define PIC_CPUCTRL_MPR 0x0400 /* memory read parity enable */
#define PIC_CPUCTRL_SLAVE 0x0800 /* slave accesses permitted */
#define PIC_CPUCTRL_VMEARB 0x1000 /* vme arbiter enable */
#define PIC_CPUCTRL_WPR 0x2000 /* write bad parity */
#define PIC_CPUCTRL_WDOG 0x4000 /* watchdog enable */
#define PIC_CPUCTRL_GFXRESET 0x8000 /* reset graphics */

#define PIC_MODE 0x04 /* system mode */

#define PIC_MODE_DBSIZ 0x0003 /* data block size */
#define PIC_MODE_IBSIZ 0x000c /* instruction block size */
#define PIC_MODE_ISTREAM 0x0010 /* instruction streaming */
#define PIC_MODE_NOCACHE 0x0020 /* cache disabled */
#define PIC_MODE_STOREPARTIAL 0x0040 /* store partial */
#define PIC_MODE_BUSDRIVE 0x0080 /* bus drive */

#define PIC_SYSID 0x08 /* system id */

#define PIC_SYSID_FPU 0x0001 /* fpu exists */
#define PIC_SYSID_GDMAERR 0x0004 /* graphics dma error */
#define PIC_SYSID_GDMADONE 0x0008 /* graphics dma complete */
#define PIC_SYSID_VMERMW 0x0010 /* vme read-mod-write */
#define PIC_SYSID_REVSHIFT 0x0006 /* Rev bits shifted */
#define PIC_SYSID_REVMASK 0x0007 /* PIC revision */

#define PIC_MEMCFG0 0x10000 /* memory config register 0 */
#define PIC_MEMCFG1 0x10004 /* memory config register 1 */
#define PIC_MEMCFG0_PHYSADDR (0x1fa00000 + PIC_MEMCFG0)
#define PIC_MEMCFG1_PHYSADDR (0x1fa00000 + PIC_MEMCFG1)

#define PIC_MEMCFG_4MB 0x0000 /* 4 megabytes (never occurs) */
#define PIC_MEMCFG_8MB 0x0001 /* 8 megabytes */
#define PIC_MEMCFG_16MB 0x0003 /* 16 megabytes */
#define PIC_MEMCFG_32MB 0x0007 /* 32 megabytes */
#define PIC_MEMCFG_64MB 0x000f /* 64 megabytes */

#define PIC_MEMCFG_BADSIZ 0x0000 /* bad memory size */
#define PIC_MEMCFG_ADDRMASK 0x003f /* memory address mask */
#define PIC_MEMCFG_BADADDR 0x003f /* no memory in bank */
#define PIC_MEMCFG_SIZMASK 0x0f00 /* bank size mask */

/*
* The bank memory address is computed the same way mc's is.
* Size is similar, only having one less bit (max. 64MB per bank).
*/
#define PIC_MEMCFG_ADDR(x) \
((x & PIC_MEMCFG_ADDRMASK) << 22)
#define PIC_MEMCFG_SIZ(x) \
(((x & PIC_MEMCFG_SIZMASK) + 0x100) << 14)

#define PIC_WRONLY_REFRESH 0x10100 /* write only refresh timer */

#define PIC_PARITY_ERROR 0x10200 /* parity errors */

#define PIC_PARITY_ERROR_GDMA 0x0001 /* graphics dma */
#define PIC_PARITY_ERROR_DMA 0x0002
#define PIC_PARITY_ERROR_CPU 0x0004
#define PIC_PARITY_ERROR_VME 0x0008
#define PIC_PARITY_ERROR_BYTE3 0x0010 /* error in fourth byte */
#define PIC_PARITY_ERROR_BYTE2 0x0020 /* error in third byte */
#define PIC_PARITY_ERROR_BYTE1 0x0040 /* error in second byte */
#define PIC_PARITY_ERROR_BYTE0 0x0080 /* error in first byte */

#define PIC_PARITY_ADDR_CPU 0x10204 /* cpu error address */
#define PIC_PARITY_ADDR_DMA 0x10208 /* dma error address */
#define PIC_PARITY_ERROR_CLEAR 0x10210 /* clear parity errors */

/*
* GIO slot configuration registers described by the 'GIO BUS Specification'
* apparently no IP20 counterpart on mc.
*/
#define PIC_GIO32ARB_SLOT0 0x20000 /* set slot 0 config */
#define PIC_GIO32ARB_SLOT1 0x20004 /* set slot 1 config */

#define PIC_GIO32ARB_SLOT_SLAVE 0x0001 /* slave only */
#define PIC_GIO32ARB_SLOT_LONG 0x0002 /* long burst */

#define PIC_GIO32ARB_BURST 0x20008 /* set gio burst */

#define PIC_GIO32ARB_DEFBURST 0x0001 /* default burst value */

#define PIC_GIO32ARB_DELAY 0x2000c /* set gio delay */

#define PIC_GIO32ARB_DEFDELAY 0x00f2 /* default delay value */

#endif /* _ARCH_SGIMIPS_DEV_PICREG_H_ */