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/* $NetBSD: promdev.c,v 1.7 1996/01/29 23:41:10 gwr Exp $ */
/*
* Copyright (c) 1995 Gordon W. Ross
* Copyright (c) 1993 Paul Kranenburg
* 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 Paul Kranenburg.
* 4. 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.
*/
#include <sys/param.h>
#include <machine/mon.h>
#include <machine/pte.h>
#include <machine/saio.h>
#include "stand.h"
#include "dvma.h"
extern void set_pte __P((int, int));
extern int debug;
static int promdev_inuse;
static char *
prom_mapin(u_long physaddr, int length, int maptype);
/*
* Note: caller sets the fields:
* si->si_boottab
* si->si_ctlr
* si->si_unit
* si->si_boff
*/
int
prom_iopen(si)
struct saioreq *si;
{
struct boottab *ops;
struct devinfo *dip;
int error;
if (promdev_inuse)
return(EMFILE);
ops = si->si_boottab;
dip = ops->b_devinfo;
#ifdef DEBUG_PROM
if (debug) {
printf("Boot device type: %s\n", ops->b_desc);
printf("d_devbytes=%d\n", dip->d_devbytes);
printf("d_dmabytes=%d\n", dip->d_dmabytes);
printf("d_localbytes=%d\n", dip->d_localbytes);
printf("d_stdcount=%d\n", dip->d_stdcount);
printf("d_stdaddrs[%d]=%x\n", si->si_ctlr,
dip->d_stdaddrs[si->si_ctlr]);
printf("d_devtype=%d\n", dip->d_devtype);
printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
}
#endif
if (si->si_ctlr > dip->d_stdcount) {
printf("Invalid controller number\n");
return(ENXIO);
}
dvma_init();
if (dip->d_devbytes) {
si->si_devaddr = prom_mapin(dip->d_stdaddrs[si->si_ctlr],
dip->d_devbytes, dip->d_devtype);
#ifdef DEBUG_PROM
if (debug)
printf("prom_iopen: devaddr=0x%x pte=0x%x\n",
si->si_devaddr, get_pte(si->si_devaddr));
#endif
}
if (dip->d_dmabytes) {
int addr, size;
/* try page-aligned address... */
size = dip->d_dmabytes + NBPG;
addr = (int) dvma_alloc(size);
addr = m68k_round_page(addr);
si->si_dmaaddr = (char*) addr;
#ifdef DEBUG_PROM
if (debug)
printf("prom_iopen: dmaaddr=0x%x\n", si->si_dmaaddr);
#endif
}
if (dip->d_localbytes) {
si->si_devdata = alloc(dip->d_localbytes);
#ifdef DEBUG_PROM
if (debug)
printf("prom_iopen: devdata=0x%x\n", si->si_devdata);
#endif
}
/* OK, call the PROM device open routine. */
#ifdef DEBUG_PROM
if (debug)
printf("prom_iopen: calling prom open...\n");
#endif
error = (*ops->b_open)(si);
if (error != 0) {
printf("prom_iopen: \"%s\" error=%d\n",
ops->b_desc, error);
return (ENXIO);
}
#ifdef DEBUG_PROM
if (debug)
printf("prom_iopen: prom open returned %d\n", error);
#endif
promdev_inuse++;
return (0);
}
void
prom_iclose(si)
struct saioreq *si;
{
struct boottab *ops;
struct devinfo *dip;
if (promdev_inuse == 0)
return;
ops = si->si_boottab;
dip = ops->b_devinfo;
#ifdef DEBUG_PROM
if (debug)
printf("prom_iclose: calling prom close...\n");
#endif
(*ops->b_close)(si);
promdev_inuse = 0;
}
struct mapinfo {
int maptype;
int pgtype;
int base;
};
static struct mapinfo
prom_mapinfo[] = {
/* On-board memory, I/O */
{ MAP_MAINMEM, PGT_OBMEM, 0 },
{ MAP_OBIO, PGT_OBIO, 0 },
/* Multibus adapter */
{ MAP_MBMEM, PGT_VME_D16, 0xFF000000 },
{ MAP_MBIO, PGT_VME_D16, 0xFFFF0000 },
/* VME A16 */
{ MAP_VME16A16D, PGT_VME_D16, 0xFFFF0000 },
{ MAP_VME16A32D, PGT_VME_D32, 0xFFFF0000 },
/* VME A24 */
{ MAP_VME24A16D, PGT_VME_D16, 0xFF000000 },
{ MAP_VME24A32D, PGT_VME_D32, 0xFF000000 },
/* VME A32 */
{ MAP_VME32A16D, PGT_VME_D16, 0 },
{ MAP_VME32A32D, PGT_VME_D32, 0 },
};
static prom_mapinfo_cnt = sizeof(prom_mapinfo) / sizeof(prom_mapinfo[0]);
/* The virtual address we will use for PROM device mappings. */
static int prom_devmap = MONSHORTSEG;
static char *
prom_mapin(physaddr, length, maptype)
u_long physaddr;
int length, maptype;
{
int i, pa, pte, va;
if (length > (4*NBPG))
panic("prom_mapin: length=%d", length);
for (i = 0; i < prom_mapinfo_cnt; i++)
if (prom_mapinfo[i].maptype == maptype)
goto found;
panic("prom_mapin: invalid maptype %d", maptype);
found:
pte = prom_mapinfo[i].pgtype;
pte |= PG_PERM;
pa = prom_mapinfo[i].base;
pa += physaddr;
pte |= PA_PGNUM(pa);
va = prom_devmap;
do {
set_pte(va, pte);
va += NBPG;
pte += 1;
length -= NBPG;
} while (length > 0);
return ((char*)(prom_devmap | (pa & PGOFSET)));
}
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