306 lines
7.5 KiB
C
306 lines
7.5 KiB
C
/* $NetBSD: sun3.c,v 1.4 2002/09/27 15:36:58 provos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Gordon W. Ross.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Standalone functions specific to the Sun3.
|
|
*/
|
|
|
|
#define _SUN3_ XXX
|
|
|
|
/* Need to avoid conflicts on these: */
|
|
#define get_pte sun3_get_pte
|
|
#define set_pte sun3_set_pte
|
|
#define get_segmap sun3_get_segmap
|
|
#define set_segmap sun3_set_segmap
|
|
|
|
/*
|
|
* We need to get the sun3 NBSG definition, even if we're
|
|
* building this with a different sun68k target.
|
|
*/
|
|
#include <arch/sun3/include/param.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <machine/idprom.h>
|
|
#include <machine/mon.h>
|
|
|
|
#include <arch/sun3/include/pte3.h>
|
|
#include <arch/sun3/sun3/control.h>
|
|
#include <arch/sun3/sun3/vme.h>
|
|
|
|
#include <stand.h>
|
|
|
|
#include "libsa.h"
|
|
#include "dvma.h"
|
|
#include "saio.h" /* enum MAPTYPES */
|
|
|
|
#define OBIO_MASK 0xFFFFFF
|
|
|
|
u_int get_pte __P((vaddr_t va));
|
|
void set_pte __P((vaddr_t va, u_int pte));
|
|
char * dvma3_alloc __P((int len));
|
|
void dvma3_free __P((char *dvma, int len));
|
|
char * dvma3_mapin __P((char *pkt, int len));
|
|
void dvma3_mapout __P((char *dmabuf, int len));
|
|
char * dev3_mapin __P((int type, u_long addr, int len));
|
|
|
|
struct mapinfo {
|
|
int maptype;
|
|
int pgtype;
|
|
u_int base;
|
|
u_int mask;
|
|
};
|
|
|
|
struct mapinfo
|
|
sun3_mapinfo[MAP__NTYPES] = {
|
|
/* On-board memory, I/O */
|
|
{ MAP_MAINMEM, PGT_OBMEM, 0, ~0 },
|
|
{ MAP_OBIO, PGT_OBIO, 0, OBIO_MASK },
|
|
/* Multibus adapter (A24,A16) */
|
|
{ MAP_MBMEM, PGT_VME_D16, VME24_BASE, VME24_MASK },
|
|
{ MAP_MBIO, PGT_VME_D16, VME16_BASE, VME16_MASK },
|
|
/* VME A16 */
|
|
{ MAP_VME16A16D, PGT_VME_D16, VME16_BASE, VME16_MASK },
|
|
{ MAP_VME16A32D, PGT_VME_D32, VME16_BASE, VME16_MASK },
|
|
/* VME A24 */
|
|
{ MAP_VME24A16D, PGT_VME_D16, VME24_BASE, VME24_MASK },
|
|
{ MAP_VME24A32D, PGT_VME_D32, VME24_BASE, VME24_MASK },
|
|
/* VME A32 */
|
|
{ MAP_VME32A16D, PGT_VME_D16, VME32_BASE, VME32_MASK },
|
|
{ MAP_VME32A32D, PGT_VME_D32, VME32_BASE, VME32_MASK },
|
|
};
|
|
|
|
/* The virtual address we will use for PROM device mappings. */
|
|
int sun3_devmap = SUN3_MONSHORTSEG;
|
|
|
|
char *
|
|
dev3_mapin(maptype, physaddr, length)
|
|
int maptype;
|
|
u_long physaddr;
|
|
int length;
|
|
{
|
|
u_int i, pa, pte, pgva, va;
|
|
|
|
if ((sun3_devmap + length) > SUN3_MONSHORTPAGE)
|
|
panic("dev3_mapin: length=%d", length);
|
|
|
|
for (i = 0; i < MAP__NTYPES; i++)
|
|
if (sun3_mapinfo[i].maptype == maptype)
|
|
goto found;
|
|
panic("dev3_mapin: bad maptype");
|
|
found:
|
|
|
|
if (physaddr & ~(sun3_mapinfo[i].mask))
|
|
panic("dev3_mapin: bad address");
|
|
pa = sun3_mapinfo[i].base += physaddr;
|
|
|
|
pte = PA_PGNUM(pa) | PG_PERM |
|
|
sun3_mapinfo[i].pgtype;
|
|
|
|
va = pgva = sun3_devmap;
|
|
do {
|
|
set_pte(pgva, pte);
|
|
pgva += NBPG;
|
|
pte += 1;
|
|
length -= NBPG;
|
|
} while (length > 0);
|
|
sun3_devmap = pgva;
|
|
va += (physaddr & PGOFSET);
|
|
|
|
#ifdef DEBUG_PROM
|
|
if (debug)
|
|
printf("dev3_mapin: va=0x%x pte=0x%x\n",
|
|
va, get_pte(va));
|
|
#endif
|
|
return ((char*)va);
|
|
}
|
|
|
|
/*****************************************************************
|
|
* DVMA support
|
|
*/
|
|
|
|
/*
|
|
* The easiest way to deal with the need for DVMA mappings is to
|
|
* create a DVMA alias mapping of the entire address range used by
|
|
* the boot program. That way, dvma_mapin can just compute the
|
|
* DVMA alias address, and dvma_mapout does nothing.
|
|
*
|
|
* Note that this assumes that standalone programs will do I/O
|
|
* operations only within range (SA_MIN_VA .. SA_MAX_VA) checked.
|
|
*/
|
|
|
|
#define DVMA_BASE 0xFFf00000
|
|
#define DVMA_MAPLEN 0xE0000 /* 1 MB - 128K (save MONSHORTSEG) */
|
|
|
|
#define SA_MIN_VA 0x200000
|
|
#define SA_MAX_VA (SA_MIN_VA + DVMA_MAPLEN)
|
|
|
|
/* This points to the end of the free DVMA space. */
|
|
u_int dvma3_end = DVMA_BASE + DVMA_MAPLEN;
|
|
|
|
void
|
|
dvma3_init()
|
|
{
|
|
int segva, dmava, sme;
|
|
|
|
segva = SA_MIN_VA;
|
|
dmava = DVMA_BASE;
|
|
|
|
while (segva < SA_MAX_VA) {
|
|
sme = get_segmap(segva);
|
|
set_segmap(dmava, sme);
|
|
segva += NBSG;
|
|
dmava += NBSG;
|
|
}
|
|
}
|
|
|
|
/* Convert a local address to a DVMA address. */
|
|
char *
|
|
dvma3_mapin(char *addr, int len)
|
|
{
|
|
int va = (int)addr;
|
|
|
|
/* Make sure the address is in the DVMA map. */
|
|
if ((va < SA_MIN_VA) || (va >= SA_MAX_VA))
|
|
panic("dvma3_mapin");
|
|
|
|
va -= SA_MIN_VA;
|
|
va += DVMA_BASE;
|
|
|
|
return ((char *) va);
|
|
}
|
|
|
|
/* Destroy a DVMA address alias. */
|
|
void
|
|
dvma3_mapout(char *addr, int len)
|
|
{
|
|
int va = (int)addr;
|
|
|
|
/* Make sure the address is in the DVMA map. */
|
|
if ((va < DVMA_BASE) || (va >= (DVMA_BASE + DVMA_MAPLEN)))
|
|
panic("dvma3_mapout");
|
|
}
|
|
|
|
char *
|
|
dvma3_alloc(int len)
|
|
{
|
|
len = m68k_round_page(len);
|
|
dvma3_end -= len;
|
|
return((char*)dvma3_end);
|
|
}
|
|
|
|
void
|
|
dvma3_free(char *dvma, int len)
|
|
{
|
|
/* not worth the trouble */
|
|
}
|
|
|
|
/*****************************************************************
|
|
* Control space stuff...
|
|
*/
|
|
|
|
u_int
|
|
get_pte(va)
|
|
vaddr_t va;
|
|
{
|
|
va = CONTROL_ADDR_BUILD(PGMAP_BASE, va);
|
|
return (get_control_word(va));
|
|
}
|
|
|
|
void
|
|
set_pte(va, pte)
|
|
vaddr_t va;
|
|
u_int pte;
|
|
{
|
|
va = CONTROL_ADDR_BUILD(PGMAP_BASE, va);
|
|
set_control_word(va, pte);
|
|
}
|
|
|
|
int
|
|
get_segmap(va)
|
|
vaddr_t va;
|
|
{
|
|
va = CONTROL_ADDR_BUILD(SEGMAP_BASE, va);
|
|
return (get_control_byte(va));
|
|
}
|
|
|
|
void
|
|
set_segmap(va, sme)
|
|
vaddr_t va;
|
|
int sme;
|
|
{
|
|
va = CONTROL_ADDR_BUILD(SEGMAP_BASE, va);
|
|
set_control_byte(va, sme);
|
|
}
|
|
|
|
/*
|
|
* Copy the IDPROM contents into the passed buffer.
|
|
* The caller (idprom.c) will do the checksum.
|
|
*/
|
|
void
|
|
sun3_getidprom(u_char *dst)
|
|
{
|
|
vaddr_t src; /* control space address */
|
|
int len, x;
|
|
|
|
src = IDPROM_BASE;
|
|
len = sizeof(struct idprom);
|
|
do {
|
|
x = get_control_byte(src++);
|
|
*dst++ = x;
|
|
} while (--len > 0);
|
|
}
|
|
|
|
/*****************************************************************
|
|
* Init our function pointers, etc.
|
|
*/
|
|
|
|
void
|
|
sun3_init()
|
|
{
|
|
|
|
/* Set the function pointers. */
|
|
dev_mapin_p = dev3_mapin;
|
|
dvma_alloc_p = dvma3_alloc;
|
|
dvma_free_p = dvma3_free;
|
|
dvma_mapin_p = dvma3_mapin;
|
|
dvma_mapout_p = dvma3_mapout;
|
|
|
|
/* Prepare DVMA segment. */
|
|
dvma3_init();
|
|
}
|