sym.c revision 9a70fc3be3b1e966bf78825cdb8d509963a6f0a1
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Implementation of "scsi_vhci_f_sym" symmetric failover_ops.
*
* This file was historically meant for only symmetric implementation. It has
* been extended to manage SUN "supported" symmetric controllers. The supported
* VID/PID shall be listed in the symmetric_dev_table.
*/
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/scsi/scsi.h>
#include <sys/scsi/adapters/scsi_vhci.h>
/* Supported device table entries. */
char *symmetric_dev_table[] = {
/* " 111111" */
/* "012345670123456789012345" */
/* "|-VID--||-----PID------|" */
/* disks */
"IBM DDYFT",
"IBM IC",
"SEAGATE ST",
/* enclosures */
"SUN SENA", /* SES device */
"SUN SESS01", /* VICOM SVE box */
"SUNW SUNWGS", /* Daktari enclosure */
/* arrays */
"HITACHI OPEN", /* Hitachi storage */
"SUN PSX1000", /* Pirus Matterhorn */
"SUN SE6920", /* Pirus */
"SUN SE6940", /* DSP - Nauset */
"SUN StorEdge 3510", /* Minnow FC */
"SUN StorEdge 3511", /* Minnow SATA RAID */
"SUN StorageTek 6920", /* DSP */
"SUN StorageTek 6940", /* DSP - Nauset */
"SUN StorageTek NAS", /* StorageTek NAS */
"SUN MRA300_R", /* Shamrock - Controller */
"SUN MRA300_E", /* Shamrock - Expansion */
NULL
};
/* Failover module plumbing. */
SCSI_FAILOVER_OP(SFO_NAME_SYM, symmetric);
/* ARGSUSED */
static int
symmetric_device_probe(struct scsi_device *sd, struct scsi_inquiry *stdinq,
void **ctpriv)
{
char **dt;
VHCI_DEBUG(6, (CE_NOTE, NULL, "!inq str: %s\n", stdinq->inq_vid));
for (dt = symmetric_dev_table; *dt; dt++)
if (strncmp(stdinq->inq_vid, *dt, strlen(*dt)) == 0)
return (SFO_DEVICE_PROBE_VHCI);
/*
* No match, check for generic Sun supported disks:
*
* "|-VID--||-----PID------|"
* "012345670123456789012345"
* ".................SUN..G."
* ".................SUN..T."
* ".................SUN...G"
* ".................SUN...T"
*/
if (bcmp(&stdinq->inq_pid[9], "SUN", 3) == 0) {
if ((stdinq->inq_pid[14] == 'G' || stdinq->inq_pid[15] == 'G' ||
stdinq->inq_pid[14] == 'T' || stdinq->inq_pid[15] == 'T') &&
(stdinq->inq_dtype == DTYPE_DIRECT)) {
return (SFO_DEVICE_PROBE_VHCI);
}
}
return (SFO_DEVICE_PROBE_PHCI);
}
/* ARGSUSED */
static void
symmetric_device_unprobe(struct scsi_device *sd, void *ctpriv)
{
/*
* NOP for symmetric
*/
}
/* ARGSUSED */
static int
symmetric_path_activate(struct scsi_device *sd, char *pathclass, void *ctpriv)
{
return (0);
}
/* ARGSUSED */
static int
symmetric_path_deactivate(struct scsi_device *sd, char *pathclass,
void *ctpriv)
{
return (0);
}
/* ARGSUSED */
static int
symmetric_path_get_opinfo(struct scsi_device *sd,
struct scsi_path_opinfo *opinfo, void *ctpriv)
{
opinfo->opinfo_rev = OPINFO_REV;
(void) strcpy(opinfo->opinfo_path_attr, "primary");
opinfo->opinfo_path_state = SCSI_PATH_ACTIVE;
opinfo->opinfo_pswtch_best = 0; /* N/A */
opinfo->opinfo_pswtch_worst = 0; /* N/A */
opinfo->opinfo_xlf_capable = 0;
opinfo->opinfo_mode = SCSI_NO_FAILOVER;
opinfo->opinfo_preferred = 1;
return (0);
}
/* ARGSUSED */
static int
symmetric_path_ping(struct scsi_device *sd, void *ctpriv)
{
return (1);
}
/* ARGSUSED */
static int
symmetric_analyze_sense(struct scsi_device *sd,
struct scsi_extended_sense *sense, void *ctpriv)
{
return (SCSI_SENSE_NOFAILOVER);
}
/* ARGSUSED */
static int
symmetric_pathclass_next(char *cur, char **nxt, void *ctpriv)
{
if (cur == NULL) {
*nxt = PCLASS_PRIMARY;
return (0);
} else if (strcmp(cur, PCLASS_PRIMARY) == 0) {
return (ENOENT);
} else {
return (EINVAL);
}
}