scsi-hpux.c
上传用户:xiejiait
上传日期:2007-01-06
资源大小:881k
文件大小:8k
- /* @(#)scsi-hpux.c 1.17 00/01/11 Copyright 1997 J. Schilling */
- #ifndef lint
- static char __sccsid[] =
- "@(#)scsi-hpux.c 1.17 00/01/11 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, 675 Mass Ave, Cambridge, MA 02139, 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-1.17"; /* 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.
- */
- EXPORT char *
- scg__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);
- }
- EXPORT int
- scsi_open(scgp, device, busno, tgt, tlun)
- SCSI *scgp;
- char *device;
- int busno;
- int tgt;
- int tlun;
- {
- 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 != ' ') || (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) {
- sprintf(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++) {
- sprintf(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) {
- errmsg("open '%s'n", devname);
- }
- }
- }
- }
- }
- return (nopen);
- }
- EXPORT int
- scsi_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
- scsi_maxdma(scgp)
- SCSI *scgp;
- {
- return (MAX_DMA_HP);
- }
- EXPORT void *
- scsi_getbuf(scgp, amt)
- SCSI *scgp;
- long amt;
- {
- if (amt <= 0 || amt > scsi_maxdma(scgp))
- return ((void *)0);
- if (scgp->debug)
- printf("scsi_getbuf: %ld bytesn", amt);
- scgp->bufbase = valloc((size_t)(amt));
- return (scgp->bufbase);
- }
- EXPORT void
- scsi_freebuf(scgp)
- SCSI *scgp;
- {
- if (scgp->bufbase)
- free(scgp->bufbase);
- scgp->bufbase = NULL;
- }
- EXPORT
- BOOL scsi_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);
- }
- EXPORT
- int scsi_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]);
- }
- EXPORT int
- scsi_initiator_id(scgp)
- SCSI *scgp;
- {
- return (-1);
- }
- EXPORT
- int scsi_isatapi(scgp)
- SCSI *scgp;
- {
- return (FALSE);
- }
- EXPORT
- int scsireset(scgp)
- SCSI *scgp;
- {
- int f = scsi_fileno(scgp, scgp->scsibus, scgp->target, scgp->lun);
- return (ioctl(f, SIOC_RESET_BUS, 0));
- }
- LOCAL int
- scsi_send(scgp, f, sp)
- SCSI *scgp;
- int f;
- struct scg_cmd *sp;
- {
- int ret;
- int flags;
- struct sctl_io sctl_io;
- if ((f < 0) || (sp->cdb_len > sizeof(sctl_io.cdb))) {
- sp->error = SCG_FATAL;
- return (0);
- }
- fillbytes((caddr_t)&sctl_io, sizeof(sctl_io), ' ');
- 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(f, SIOC_IO, &sctl_io);
- if (ret < 0) {
- sp->error = SCG_FATAL;
- sp->ux_errno = errno;
- return (ret);
- }
- if (scgp->debug)
- error("cdb_status: %X, size: %d xfer: %dn", 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: %Xn", 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