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/* $OpenBSD: scsi.c,v 1.2 2013/10/16 16:59:34 miod Exp $ */
/*
* Copyright (c) 2013 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <stand.h>
#include "libsa.h"
#include "prom.h"
#include "scsi.h"
#include <scsi/scsi_disk.h>
struct scsi_private *
scsi_initialize(const char *ctrlname, int ctrl, int unit, int lun, int part)
{
struct scsi_private *priv;
priv = alloc(sizeof(struct scsi_private));
if (priv == NULL)
return NULL;
memset(priv, 0, sizeof(struct scsi_private));
priv->part = part;
/* provide default based upon system type */
if (*ctrlname == '\0') {
switch (cpuid()) {
case AVIION_300_310:
case AVIION_400_4000:
case AVIION_410_4100:
case AVIION_300C_310C:
case AVIION_300CD_310CD:
case AVIION_300D_310D:
case AVIION_4300_25:
case AVIION_4300_20:
case AVIION_4300_16:
ctrlname = "insc";
break;
case AVIION_4600_530:
ctrlname = "ncsc";
break;
}
}
if (strcmp(ctrlname, "insc") == 0) {
if (ctrl == 0) {
*(volatile uint32_t *)0xfff840c0 = 0x6e;
ctrl = 0xfff8a000;
} else
goto done;
if (badaddr((void *)ctrl, 4) != 0)
goto done;
/* initialize controller */
priv->scsicookie = oaic_attach(ctrl, unit, lun);
priv->scsicmd = oaic_scsicmd;
priv->scsidetach = oaic_detach;
} else
if (strcmp(ctrlname, "ncsc") == 0) {
if (ctrl == 0)
ctrl = 0xfffb0000;
else if (ctrl == 1)
ctrl = 0xfffb0080;
else
goto done;
if (badaddr((void *)ctrl, 4) != 0)
goto done;
/* initialize controller */
priv->scsicookie = oosiop_attach(ctrl, unit, lun);
priv->scsicmd = oosiop_scsicmd;
priv->scsidetach = oosiop_detach;
}
done:
if (priv->scsicookie == NULL) {
free(priv, sizeof(struct scsi_private));
priv = NULL;
}
return priv;
}
int
scsi_tur(struct scsi_private *priv)
{
struct scsi_test_unit_ready cmd;
int i, rc;
for (i = TEST_READY_RETRIES; i != 0; i--) {
memset(&cmd, 0, sizeof cmd);
cmd.opcode = TEST_UNIT_READY;
rc = (*priv->scsicmd)(priv->scsicookie,
&cmd, sizeof cmd, NULL, 0, NULL);
if (rc == 0)
break;
}
return rc;
}
int
scsi_read(struct scsi_private *priv, daddr32_t blk, size_t size, void *buf,
size_t *rsize)
{
union {
struct scsi_rw rw;
struct scsi_rw_big rw_big;
struct scsi_rw_12 rw_12;
} cmd;
int nsecs;
size_t cmdlen;
int i, rc;
nsecs = (size + DEV_BSIZE - 1) >> _DEV_BSHIFT;
for (i = SCSI_RETRIES; i != 0; i--) {
memset(&cmd, 0, sizeof cmd);
/* XXX SDEV_ONLYBIG quirk */
if ((blk & 0x1fffff) == blk && (nsecs & 0xff) == nsecs) {
cmd.rw.opcode = READ_COMMAND;
_lto3b(blk, cmd.rw.addr);
cmd.rw.length = nsecs;
cmdlen = sizeof cmd.rw;
} else if ((nsecs & 0xffff) == nsecs) {
cmd.rw_big.opcode = READ_BIG;
_lto4b(blk, cmd.rw_big.addr);
_lto2b(nsecs, cmd.rw_big.length);
cmdlen = sizeof cmd.rw_big;
} else {
cmd.rw_12.opcode = READ_12;
_lto4b(blk, cmd.rw_12.addr);
_lto4b(nsecs, cmd.rw_12.length);
cmdlen = sizeof cmd.rw_12;
}
rc = (*priv->scsicmd)(priv->scsicookie,
&cmd, sizeof cmd, buf, size, rsize);
if (rc == 0)
break;
}
return rc;
}
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