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NetBSD/sys/arch/sparc/stand/common/promdev.c

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/* $NetBSD: promdev.c,v 1.26 2010/09/02 03:14:42 uwe Exp $ */
/*
* Copyright (c) 1993 Paul Kranenburg
* Copyright (c) 1995 Gordon W. Ross
* 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.
*/
/*
* Note: the `#ifndef BOOTXX' in here serve to queeze the code size
* of the 1st-stage boot program.
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <machine/oldmon.h>
#include <machine/promlib.h>
#include <machine/ctlreg.h>
#include <sparc/sparc/asm.h>
#include <machine/pte.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libkern/libkern.h>
#include <sparc/stand/common/promdev.h>
#include <sparc/stand/common/isfloppy.h>
#ifndef BOOTXX
#include <sys/disklabel.h>
#include <dev/sun/disklabel.h>
#include <dev/raidframe/raidframevar.h>
#endif
/* OBP V0-3 PROM vector */
#define obpvec ((struct promvec *)romp)
int obp_close(struct open_file *);
int obp_strategy(void *, int, daddr_t, size_t, void *, size_t *);
int obp_v0_strategy(void *, int, daddr_t, size_t, void *, size_t *);
ssize_t obp_v0_xmit(struct promdata *, void *, size_t);
ssize_t obp_v0_recv(struct promdata *, void *, size_t);
int obp_v2_strategy(void *, int, daddr_t, size_t, void *, size_t *);
ssize_t obp_v2_xmit(struct promdata *, void *, size_t);
ssize_t obp_v2_recv(struct promdata *, void *, size_t);
int oldmon_close(struct open_file *);
int oldmon_strategy(void *, int, daddr_t, size_t, void *, size_t *);
void oldmon_iclose(struct saioreq *);
int oldmon_iopen(struct promdata *);
ssize_t oldmon_xmit(struct promdata *, void *, size_t);
ssize_t oldmon_recv(struct promdata *, void *, size_t);
static char *oldmon_mapin(u_long, int, int);
#ifndef BOOTXX
static char *mygetpropstring(int, char *);
static int getdevtype(int, char *);
#endif
extern struct fs_ops file_system_nfs[];
extern struct fs_ops file_system_ufs[];
#define null_devopen (void *)sparc_noop
#define null_devioctl (void *)sparc_noop
#if 0
struct devsw devsw[];
int ndevs = (sizeof(devsw)/sizeof(devsw[0]));
#endif
struct devsw oldmon_devsw =
{ "oldmon", oldmon_strategy, null_devopen, oldmon_close, null_devioctl };
struct devsw obp_v0_devsw =
{ "obp v0", obp_v0_strategy, null_devopen, obp_close, null_devioctl };
struct devsw obp_v2_devsw =
{ "obp v2", obp_v2_strategy, null_devopen, obp_close, null_devioctl };
char prom_bootdevice[MAX_PROM_PATH];
static int saveecho;
#ifndef BOOTXX
static daddr_t doffset = 0;
#endif
void
putchar(int c)
{
if (c == '\n')
prom_putchar('\r');
prom_putchar(c);
}
void
_rtt(void)
{
prom_halt();
}
int
devopen(struct open_file *f, const char *fname, char **file)
{
int error = 0, fd = 0;
struct promdata *pd;
#ifndef BOOTXX
char *partition;
int part = 0;
char rawpart[MAX_PROM_PATH];
struct promdata *disk_pd;
char buf[DEV_BSIZE];
struct disklabel *dlp;
size_t read;
#endif
pd = (struct promdata *)alloc(sizeof *pd);
f->f_devdata = (void *)pd;
switch (prom_version()) {
case PROM_OLDMON:
error = oldmon_iopen(pd);
#ifndef BOOTXX
pd->xmit = oldmon_xmit;
pd->recv = oldmon_recv;
#endif
f->f_dev = &oldmon_devsw;
saveecho = *romVectorPtr->echo;
*romVectorPtr->echo = 0;
break;
case PROM_OBP_V0:
case PROM_OBP_V2:
case PROM_OBP_V3:
case PROM_OPENFIRM:
if (*prom_bootdevice == '\0') {
error = ENXIO;
break;
}
fd = prom_open(prom_bootdevice);
if (fd == 0) {
error = ENXIO;
break;
}
pd->fd = fd;
switch (prom_version()) {
case PROM_OBP_V0:
#ifndef BOOTXX
pd->xmit = obp_v0_xmit;
pd->recv = obp_v0_recv;
#endif
f->f_dev = &obp_v0_devsw;
break;
case PROM_OBP_V2:
case PROM_OBP_V3:
case PROM_OPENFIRM:
#ifndef BOOTXX
pd->xmit = obp_v2_xmit;
pd->recv = obp_v2_recv;
#endif
f->f_dev = &obp_v2_devsw;
}
}
if (error) {
printf("Can't open device `%s'\n", prom_bootdevice);
return (error);
}
#ifdef BOOTXX
pd->devtype = DT_BLOCK;
#else /* BOOTXX */
pd->devtype = getdevtype(fd, prom_bootdevice);
/* Assume type BYTE is a raw device */
if (pd->devtype != DT_BYTE)
*file = (char *)fname;
if (pd->devtype == DT_NET) {
nfsys = 1;
memcpy(file_system, file_system_nfs,
sizeof(struct fs_ops) * nfsys);
if ((error = net_open(pd)) != 0) {
printf("Can't open NFS network connection on `%s'\n",
prom_bootdevice);
return (error);
}
} else {
memcpy(file_system, file_system_ufs,
sizeof(struct fs_ops) * nfsys);
#ifdef NOTDEF_DEBUG
printf("devopen: Checking disklabel for RAID partition\n");
#endif
/*
* Don't check disklabel on floppy boot since
* reopening it could cause Data Access Exception later.
*/
if (bootdev_isfloppy(prom_bootdevice))
return 0;
/*
* We need to read from the raw partition (i.e. the
* beginning of the disk in order to check the NetBSD
* disklabel to see if the boot partition is type RAID.
*
* For machines with prom_version() == PROM_OLDMON, we
* only handle boot from RAID for the first disk partition.
*/
disk_pd = (struct promdata *)alloc(sizeof *disk_pd);
memcpy(disk_pd, pd, sizeof(struct promdata));
if (prom_version() != PROM_OLDMON) {
strcpy(rawpart, prom_bootdevice);
if ((partition = strchr(rawpart, ':')) != '\0' &&
*++partition >= 'a' &&
*partition <= 'a' + MAXPARTITIONS) {
part = *partition - 'a';
*partition = RAW_PART + 'a';
} else
strcat(rawpart, ":c");
if ((disk_pd->fd = prom_open(rawpart)) == 0)
return 0;
}
error = f->f_dev->dv_strategy(disk_pd, F_READ, LABELSECTOR,
DEV_BSIZE, &buf, &read);
if (prom_version() != PROM_OLDMON)
prom_close(disk_pd->fd);
if (error || (read != DEV_BSIZE))
return 0;
#ifdef NOTDEF_DEBUG
{
int x = 0;
char *p = (char *) buf;
printf(" Sector %d:\n", LABELSECTOR);
printf("00000000 ");
while (x < DEV_BSIZE) {
if (*p >= 0x00 && *p < 0x10)
printf("0%x ", *p & 0xff);
else
printf("%x ", *p & 0xff);
x++;
if (x && !(x % 8))
printf(" ");
if (x && !(x % 16)) {
if(x < 0x100)
printf("\n000000%x ", x);
else
printf("\n00000%x ", x);
}
p++;
}
printf("\n");
}
#endif
/* Check for NetBSD disk label. */
dlp = (struct disklabel *) (buf + LABELOFFSET);
if (dlp->d_magic == DISKMAGIC && !dkcksum(dlp) &&
dlp->d_partitions[part].p_fstype == FS_RAID) {
#ifdef NOTDEF_DEBUG
printf("devopen: found RAID partition, "
"adjusting offset to %d\n", RF_PROTECTED_SECTORS);
#endif
doffset = RF_PROTECTED_SECTORS;
}
}
#endif /* BOOTXX */
return (0);
}
int
obp_v0_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
void *buf, size_t *rsize)
{
int n, error = 0;
struct promdata *pd = (struct promdata *)devdata;
int fd = pd->fd;
#ifndef BOOTXX
dblk += doffset;
#endif
#ifdef DEBUG_PROM
printf("promstrategy: size=%zd dblk=%d\n", size, (int)dblk);
#endif
#define prom_bread(fd, nblk, dblk, buf) \
(*obpvec->pv_v0devops.v0_rbdev)(fd, nblk, dblk, buf)
#define prom_bwrite(fd, nblk, dblk, buf) \
(*obpvec->pv_v0devops.v0_wbdev)(fd, nblk, dblk, buf)
#ifndef BOOTXX /* We know it's a block device, so save some space */
if (pd->devtype != DT_BLOCK) {
printf("promstrategy: non-block device not supported\n");
error = EINVAL;
}
#endif
n = (flag == F_READ)
? prom_bread(fd, btodb(size), dblk, buf)
: prom_bwrite(fd, btodb(size), dblk, buf);
*rsize = dbtob(n);
#ifdef DEBUG_PROM
printf("rsize = %zx\n", *rsize);
#endif
return (error);
}
int
obp_v2_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
void *buf, size_t *rsize)
{
int error = 0;
struct promdata *pd = (struct promdata *)devdata;
int fd = pd->fd;
#ifndef BOOTXX
dblk += doffset;
#endif
#ifdef DEBUG_PROM
printf("promstrategy: size=%zd dblk=%d\n", size, (int)dblk);
#endif
#ifndef BOOTXX /* We know it's a block device, so save some space */
if (pd->devtype == DT_BLOCK)
#endif
prom_seek(fd, dbtob(dblk));
*rsize = (flag == F_READ)
? prom_read(fd, buf, size)
: prom_write(fd, buf, size);
#ifdef DEBUG_PROM
printf("rsize = %zx\n", *rsize);
#endif
return (error);
}
/*
* On old-monitor machines, things work differently.
*/
int
oldmon_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
void *buf, size_t *rsize)
{
struct promdata *pd = devdata;
struct saioreq *si;
struct om_boottable *ops;
char *dmabuf;
int si_flag;
size_t xcnt;
si = pd->si;
ops = si->si_boottab;
#ifndef BOOTXX
dblk += doffset;
#endif
#ifdef DEBUG_PROM
printf("prom_strategy: size=%zd dblk=%d\n", size, (int)dblk);
#endif
dmabuf = dvma_mapin(buf, size);
si->si_bn = dblk;
si->si_ma = dmabuf;
si->si_cc = size;
si_flag = (flag == F_READ) ? SAIO_F_READ : SAIO_F_WRITE;
xcnt = (*ops->b_strategy)(si, si_flag);
dvma_mapout(dmabuf, size);
#ifdef DEBUG_PROM
printf("disk_strategy: xcnt = %zx\n", xcnt);
#endif
if (xcnt <= 0)
return (EIO);
*rsize = xcnt;
return (0);
}
int
obp_close(struct open_file *f)
{
struct promdata *pd = f->f_devdata;
register int fd = pd->fd;
#ifndef BOOTXX
if (pd->devtype == DT_NET)
net_close(pd);
#endif
prom_close(fd);
return 0;
}
int
oldmon_close(struct open_file *f)
{
struct promdata *pd = f->f_devdata;
#ifndef BOOTXX
if (pd->devtype == DT_NET)
net_close(pd);
#endif
oldmon_iclose(pd->si);
pd->si = NULL;
*romVectorPtr->echo = saveecho; /* Hmm, probably must go somewhere else */
return 0;
}
#ifndef BOOTXX
ssize_t
obp_v0_xmit(struct promdata *pd, void *buf, size_t len)
{
return ((*obpvec->pv_v0devops.v0_wnet)(pd->fd, len, buf));
}
ssize_t
obp_v2_xmit(struct promdata *pd, void *buf, size_t len)
{
return (prom_write(pd->fd, buf, len));
}
ssize_t
obp_v0_recv(struct promdata *pd, void *buf, size_t len)
{
return ((*obpvec->pv_v0devops.v0_rnet)(pd->fd, len, buf));
}
ssize_t
obp_v2_recv(struct promdata *pd, void *buf, size_t len)
{
int n;
n = prom_read(pd->fd, buf, len);
/* OBP V2 & V3 may return -2 */
return (n == -2 ? 0 : n);
}
ssize_t
oldmon_xmit(struct promdata *pd, void *buf, size_t len)
{
struct saioreq *si;
struct saif *sif;
char *dmabuf;
int rv;
si = pd->si;
sif = si->si_sif;
if (sif == NULL) {
printf("xmit: not a network device\n");
return (-1);
}
dmabuf = dvma_mapin(buf, len);
rv = sif->sif_xmit(si->si_devdata, dmabuf, len);
dvma_mapout(dmabuf, len);
return (ssize_t)(rv ? -1 : len);
}
ssize_t
oldmon_recv(struct promdata *pd, void *buf, size_t len)
{
struct saioreq *si;
struct saif *sif;
char *dmabuf;
int rv;
si = pd->si;
sif = si->si_sif;
dmabuf = dvma_mapin(buf, len);
rv = sif->sif_poll(si->si_devdata, dmabuf);
dvma_mapout(dmabuf, len);
return (ssize_t)rv;
}
int
getchar(void)
{
return (prom_getchar());
}
satime_t
getsecs(void)
{
(void)prom_peekchar();
return (prom_ticks() / 1000);
}
/*
* A number of well-known devices on sun4s.
*/
static struct dtab {
char *name;
int type;
} dtab[] = {
{ "sd", DT_BLOCK },
{ "st", DT_BLOCK },
{ "xd", DT_BLOCK },
{ "xy", DT_BLOCK },
{ "fd", DT_BLOCK },
{ "le", DT_NET },
{ "ie", DT_NET },
{ NULL, 0 }
};
int
getdevtype(int fd, char *name)
{
struct dtab *dp;
int node;
char *cp;
switch (prom_version()) {
case PROM_OLDMON:
case PROM_OBP_V0:
for (dp = dtab; dp->name; dp++) {
if (name[0] == dp->name[0] &&
name[1] == dp->name[1])
return (dp->type);
}
break;
case PROM_OBP_V2:
case PROM_OBP_V3:
case PROM_OPENFIRM:
node = prom_instance_to_package(fd);
cp = mygetpropstring(node, "device_type");
if (strcmp(cp, "block") == 0)
return (DT_BLOCK);
else if (strcmp(cp, "network") == 0)
return (DT_NET);
else if (strcmp(cp, "byte") == 0)
return (DT_BYTE);
break;
}
return (0);
}
/*
* Return a string property. There is a (small) limit on the length;
* the string is fetched into a static buffer which is overwritten on
* subsequent calls.
*/
char *
mygetpropstring(int node, char *name)
{
int len;
static char buf[64];
len = prom_proplen(node, name);
if (len > 0)
_prom_getprop(node, name, buf, len);
else
len = 0;
buf[len] = '\0'; /* usually unnecessary */
return (buf);
}
#endif /* BOOTXX */
/*
* Old monitor routines
*/
struct saioreq prom_si;
static int promdev_inuse;
int
oldmon_iopen(struct promdata *pd)
{
struct om_bootparam *bp;
struct om_boottable *ops;
struct devinfo *dip;
struct saioreq *si;
int error;
if (promdev_inuse)
return (EMFILE);
bp = *romVectorPtr->bootParam;
ops = bp->bootTable;
dip = ops->b_devinfo;
#ifdef DEBUG_PROM
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]=%lx\n", bp->ctlrNum, dip->d_stdaddrs[bp->ctlrNum]);
printf("d_devtype=%d\n", dip->d_devtype);
printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
#endif
dvma_init();
si = &prom_si;
memset(si, 0, sizeof(*si));
si->si_boottab = ops;
si->si_ctlr = bp->ctlrNum;
si->si_unit = bp->unitNum;
si->si_boff = bp->partNum;
if (si->si_ctlr > dip->d_stdcount)
return (ECTLR);
if (dip->d_devbytes) {
si->si_devaddr = oldmon_mapin(dip->d_stdaddrs[si->si_ctlr],
dip->d_devbytes, dip->d_devtype);
#ifdef DEBUG_PROM
printf("prom_iopen: devaddr=%p pte=0x%x\n",
si->si_devaddr,
getpte4((u_long)si->si_devaddr & ~PGOFSET));
#endif
}
if (dip->d_dmabytes) {
si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
#ifdef DEBUG_PROM
printf("prom_iopen: dmaaddr=%p\n", si->si_dmaaddr);
#endif
}
if (dip->d_localbytes) {
si->si_devdata = alloc(dip->d_localbytes);
#ifdef DEBUG_PROM
printf("prom_iopen: devdata=%p\n", si->si_devdata);
#endif
}
/* OK, call the PROM device open routine. */
error = (*ops->b_open)(si);
if (error != 0) {
printf("prom_iopen: \"%s\" error=%d\n", ops->b_desc, error);
return (ENXIO);
}
#ifdef DEBUG_PROM
printf("prom_iopen: succeeded, error=%d\n", error);
#endif
pd->si = si;
promdev_inuse++;
return (0);
}
void
oldmon_iclose(struct saioreq *si)
{
struct om_boottable *ops;
struct devinfo *dip;
if (promdev_inuse == 0)
return;
ops = si->si_boottab;
dip = ops->b_devinfo;
(*ops->b_close)(si);
if (si->si_dmaaddr) {
dvma_free(si->si_dmaaddr, dip->d_dmabytes);
si->si_dmaaddr = NULL;
}
promdev_inuse = 0;
}
static struct mapinfo {
int maptype;
int pgtype;
int base;
} oldmon_mapinfo[] = {
#define PG_COMMON (PG_V|PG_W|PG_S|PG_NC)
{ MAP_MAINMEM, PG_OBMEM | PG_COMMON, 0 },
{ MAP_OBIO, PG_OBIO | PG_COMMON, 0 },
{ MAP_MBMEM, PG_VME16 | PG_COMMON, 0xFF000000 },
{ MAP_MBIO, PG_VME16 | PG_COMMON, 0xFFFF0000 },
{ MAP_VME16A16D, PG_VME16 | PG_COMMON, 0xFFFF0000 },
{ MAP_VME16A32D, PG_VME32 | PG_COMMON, 0xFFFF0000 },
{ MAP_VME24A16D, PG_VME16 | PG_COMMON, 0xFF000000 },
{ MAP_VME24A32D, PG_VME32 | PG_COMMON, 0xFF000000 },
{ MAP_VME32A16D, PG_VME16 | PG_COMMON, 0 },
{ MAP_VME32A32D, PG_VME32 | PG_COMMON, 0 },
};
static int oldmon_mapinfo_cnt =
sizeof(oldmon_mapinfo) / sizeof(oldmon_mapinfo[0]);
/* The virtual address we will use for PROM device mappings. */
static u_long prom_devmap = MONSHORTSEG;
static char *
oldmon_mapin(u_long physaddr, int length, int maptype)
{
int i, pa, pte, va;
if (length > (4*NBPG))
panic("oldmon_mapin: length=%d", length);
for (i = 0; i < oldmon_mapinfo_cnt; i++)
if (oldmon_mapinfo[i].maptype == maptype)
goto found;
panic("oldmon_mapin: invalid maptype %d", maptype);
found:
pte = oldmon_mapinfo[i].pgtype;
pa = oldmon_mapinfo[i].base;
pa += physaddr;
pte |= ((pa >> SUN4_PGSHIFT) & PG_PFNUM);
va = prom_devmap;
do {
setpte4(va, pte);
va += NBPG;
pte += 1;
length -= NBPG;
} while (length > 0);
return ((char*)(prom_devmap | (pa & PGOFSET)));
}
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