/* @(#)scsi-hpux.c 1.31 04/01/15 Copyright 1997 J. Schilling */
#ifndef lint
static char __sccsid[] =
"@(#)scsi-hpux.c 1.31 04/01/15 Copyright 1997 J. Schilling";
#endif
/*
* Interface for the HP-UX generic SCSI implementation.
*
* Warning: you may change this source, but if you do that
* you need to change the _scg_version and _scg_auth* string below.
* You may not return "schily" for an SCG_AUTHOR request anymore.
* Choose your name instead of "schily" and make clear that the version
* string is related to a modified source.
*
* Copyright (c) 1997 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#undef sense
#include <sys/scsi.h>
/*
* Warning: you may change this source, but if you do that
* you need to change the _scg_version and _scg_auth* string below.
* You may not return "schily" for an SCG_AUTHOR request anymore.
* Choose your name instead of "schily" and make clear that the version
* string is related to a modified source.
*/
LOCAL char _scg_trans_version[] = "scsi-hpux.c-1.31"; /* The version for this transport*/
#define MAX_SCG 16 /* Max # of SCSI controllers */
#define MAX_TGT 16
#define MAX_LUN 8
struct scg_local {
short scgfiles[MAX_SCG][MAX_TGT][MAX_LUN];
};
#define scglocal(p) ((struct scg_local *)((p)->local))
#ifdef SCSI_MAXPHYS
# define MAX_DMA_HP SCSI_MAXPHYS
#else
# define MAX_DMA_HP (63*1024) /* Check if this is not too big */
#endif
/*
* Return version information for the low level SCSI transport code.
* This has been introduced to make it easier to trace down problems
* in applications.
*/
LOCAL char *
scgo_version(scgp, what)
SCSI *scgp;
int what;
{
if (scgp != (SCSI *)0) {
switch (what) {
case SCG_VERSION:
return (_scg_trans_version);
/*
* If you changed this source, you are not allowed to
* return "schily" for the SCG_AUTHOR request.
*/
case SCG_AUTHOR:
return (_scg_auth_schily);
case SCG_SCCS_ID:
return (__sccsid);
}
}
return ((char *)0);
}
LOCAL int
scgo_help(scgp, f)
SCSI *scgp;
FILE *f;
{
__scg_help(f, "SIOC", "Generic SCSI",
"", "bus,target,lun", "1,2,0", TRUE, FALSE);
return (0);
}
LOCAL int
scgo_open(scgp, device)
SCSI *scgp;
char *device;
{
int busno = scg_scsibus(scgp);
int tgt = scg_target(scgp);
int tlun = scg_lun(scgp);
register int f;
register int b;
register int t;
register int l;
register int nopen = 0;
char devname[64];
if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
errno = EINVAL;
if (scgp->errstr)
js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
"Illegal value for busno, target or lun '%d,%d,%d'",
busno, tgt, tlun);
return (-1);
}
if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
errno = EINVAL;
if (scgp->errstr)
js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
"Open by 'devname' not supported on this OS");
return (-1);
}
if (scgp->local == NULL) {
scgp->local = malloc(sizeof (struct scg_local));
if (scgp->local == NULL)
return (0);
for (b = 0; b < MAX_SCG; b++) {
for (t = 0; t < MAX_TGT; t++) {
for (l = 0; l < MAX_LUN; l++)
scglocal(scgp)->scgfiles[b][t][l] = (short)-1;
}
}
}
if (busno >= 0 && tgt >= 0 && tlun >= 0) {
js_snprintf(devname, sizeof (devname),
"/dev/rscsi/c%xt%xl%x", busno, tgt, tlun);
f = open(devname, O_RDWR);
if (f < 0)
return (-1);
scglocal(scgp)->scgfiles[busno][tgt][tlun] = f;
return (1);
} else {
for (b = 0; b < MAX_SCG; b++) {
for (t = 0; t < MAX_TGT; t++) {
/* for (l = 0; l < MAX_LUN; l++) {*/
for (l = 0; l < 1; l++) {
js_snprintf(devname, sizeof (devname),
"/dev/rscsi/c%xt%xl%x", b, t, l);
/*error("name: '%s'\n", devname);*/
f = open(devname, O_RDWR);
if (f >= 0) {
scglocal(scgp)->scgfiles[b][t][l] = (short)f;
nopen++;
} else if (scgp->debug > 0) {
errmsg("open '%s'\n", devname);
}
}
}
}
}
return (nopen);
}
LOCAL int
scgo_close(scgp)
SCSI *scgp;
{
register int f;
register int b;
register int t;
register int l;
if (scgp->local == NULL)
return (-1);
for (b = 0; b < MAX_SCG; b++) {
for (t = 0; t < MAX_TGT; t++) {
for (l = 0; l < MAX_LUN; l++) {
f = scglocal(scgp)->scgfiles[b][t][l];
if (f >= 0)
close(f);
scglocal(scgp)->scgfiles[b][t][l] = (short)-1;
}
}
}
return (0);
}
LOCAL long
scgo_maxdma(scgp, amt)
SCSI *scgp;
long amt;
{
return (MAX_DMA_HP);
}
LOCAL void *
scgo_getbuf(scgp, amt)
SCSI *scgp;
long amt;
{
if (scgp->debug > 0) {
js_fprintf((FILE *)scgp->errfile,
"scgo_getbuf: %ld bytes\n", amt);
}
scgp->bufbase = valloc((size_t)(amt));
return (scgp->bufbase);
}
LOCAL void
scgo_freebuf(scgp)
SCSI *scgp;
{
if (scgp->bufbase)
free(scgp->bufbase);
scgp->bufbase = NULL;
}
LOCAL BOOL
scgo_havebus(scgp, busno)
SCSI *scgp;
int busno;
{
register int t;
register int l;
if (busno < 0 || busno >= MAX_SCG)
return (FALSE);
if (scgp->local == NULL)
return (FALSE);
for (t = 0; t < MAX_TGT; t++) {
for (l = 0; l < MAX_LUN; l++)
if (scglocal(scgp)->scgfiles[busno][t][l] >= 0)
return (TRUE);
}
return (FALSE);
}
LOCAL int
scgo_fileno(scgp, busno, tgt, tlun)
SCSI *scgp;
int busno;
int tgt;
int tlun;
{
if (busno < 0 || busno >= MAX_SCG ||
tgt < 0 || tgt >= MAX_TGT ||
tlun < 0 || tlun >= MAX_LUN)
return (-1);
if (scgp->local == NULL)
return (-1);
return ((int)scglocal(scgp)->scgfiles[busno][tgt][tlun]);
}
LOCAL int
scgo_initiator_id(scgp)
SCSI *scgp;
{
return (-1);
}
LOCAL int
scgo_isatapi(scgp)
SCSI *scgp;
{
return (FALSE);
}
LOCAL int
scgo_reset(scgp, what)
SCSI *scgp;
int what;
{
if (what == SCG_RESET_NOP)
return (0);
if (what != SCG_RESET_BUS) {
errno = EINVAL;
return (-1);
}
return (ioctl(scgp->fd, SIOC_RESET_BUS, 0));
}
LOCAL int
scgo_send(scgp)
SCSI *scgp;
{
struct scg_cmd *sp = scgp->scmd;
int ret;
int flags;
struct sctl_io sctl_io;
if ((scgp->fd < 0) || (sp->cdb_len > sizeof (sctl_io.cdb))) {
sp->error = SCG_FATAL;
return (0);
}
fillbytes((caddr_t)&sctl_io, sizeof (sctl_io), '\0');
flags = 0;
/* flags = SCTL_INIT_WDTR|SCTL_INIT_SDTR;*/
if (sp->flags & SCG_RECV_DATA)
flags |= SCTL_READ;
if ((sp->flags & SCG_DISRE_ENA) == 0)
flags |= SCTL_NO_ATN;
sctl_io.flags = flags;
movebytes(&sp->cdb, sctl_io.cdb, sp->cdb_len);
sctl_io.cdb_length = sp->cdb_len;
sctl_io.data_length = sp->size;
sctl_io.data = sp->addr;
if (sp->timeout == 0)
sctl_io.max_msecs = 0;
else
sctl_io.max_msecs = (sp->timeout * 1000) + 500;
errno = 0;
sp->error = SCG_NO_ERROR;
sp->sense_count = 0;
sp->u_scb.cmd_scb[0] = 0;
sp->resid = 0;
ret = ioctl(scgp->fd, SIOC_IO, &sctl_io);
if (ret < 0) {
sp->error = SCG_FATAL;
sp->ux_errno = errno;
return (ret);
}
if (scgp->debug > 0)
error("cdb_status: %X, size: %d xfer: %d\n", sctl_io.cdb_status, sctl_io.data_length, sctl_io.data_xfer);
if (sctl_io.cdb_status == 0 || sctl_io.cdb_status == 0x02)
sp->resid = sp->size - sctl_io.data_xfer;
if (sctl_io.cdb_status & SCTL_SELECT_TIMEOUT ||
sctl_io.cdb_status & SCTL_INVALID_REQUEST) {
sp->error = SCG_FATAL;
} else if (sctl_io.cdb_status & SCTL_INCOMPLETE) {
sp->error = SCG_TIMEOUT;
} else if (sctl_io.cdb_status > 0xFF) {
errmsgno(EX_BAD, "SCSI problems: cdb_status: %X\n", sctl_io.cdb_status);
} else if ((sctl_io.cdb_status & 0xFF) != 0) {
sp->error = SCG_RETRYABLE;
sp->ux_errno = EIO;
sp->u_scb.cmd_scb[0] = sctl_io.cdb_status & 0xFF;
sp->sense_count = sctl_io.sense_xfer;
if (sp->sense_count > SCG_MAX_SENSE)
sp->sense_count = SCG_MAX_SENSE;
if (sctl_io.sense_status != S_GOOD) {
sp->sense_count = 0;
} else {
movebytes(sctl_io.sense, sp->u_sense.cmd_sense, sp->sense_count);
}
}
return (ret);
}
#define sense u_sense.Sense
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