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/*
* 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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* SCSI FMA implementation
*/
#include <sys/scsi/scsi_types.h>
#include <sys/sunmdi.h>
#include <sys/va_list.h>
#include <sys/ddi_impldefs.h>
/* consolidation private interface to generate dev scheme ereport */
extern void fm_dev_ereport_postv(dev_info_t *dip, dev_info_t *eqdip,
const char *devpath, const char *minor_name, const char *devid,
const char *tpl0, const char *error_class, uint64_t ena, int sflag,
nvlist_t *, va_list ap);
extern char *mdi_pi_pathname_by_instance(int);
#define FM_SCSI_CLASS "scsi"
#define ERPT_CLASS_SZ sizeof (FM_SCSI_CLASS) + 1 + DDI_MAX_ERPT_CLASS + 1
/*
* scsi_fm_init: Initialize fma capabilities and register with IO
* fault services.
*/
void
scsi_fm_init(struct scsi_device *sd)
{
dev_info_t *dip = sd->sd_dev;
/*
* fm-capable in driver.conf can be used to set fm_capabilities.
* If fm-capable is not defined, then the last argument passed to
* ddi_prop_get_int will be returned as the capabilities.
*
* NOTE: by default scsi_fm_capable sets DDI_FM_EREPORT_CAPABLE.
*/
sd->sd_fm_capable = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "fm-capable",
scsi_fm_capable);
/*
* Register capabilities with IO Fault Services. The capabilities
* set above may not be supported by the parent nexus, in that
* case some/all capability bits may be cleared.
*
* NOTE: iblock cookies are not important because scsi HBAs
* always interrupt below LOCK_LEVEL.
*/
if (sd->sd_fm_capable != DDI_FM_NOT_CAPABLE)
ddi_fm_init(dip, &sd->sd_fm_capable, NULL);
}
/*
* scsi_fm_fini: un-register with IO fault services.
*/
void
scsi_fm_fini(struct scsi_device *sd)
{
dev_info_t *dip = sd->sd_dev;
if (sd->sd_fm_capable != DDI_FM_NOT_CAPABLE)
ddi_fm_fini(dip);
}
/*
*
* scsi_fm_ereport_post - Post an ereport
*/
void
scsi_fm_ereport_post(struct scsi_device *sd, int path_instance,
char *devpath, const char *error_class, uint64_t ena,
char *devid, char *tpl0, int sflag, nvlist_t *pl, ...)
{
char class[ERPT_CLASS_SZ];
dev_info_t *dip = sd->sd_dev;
dev_info_t *eqdip = dip;
char *minor_name;
va_list ap;
/*
* If the scsi_device eqdip is not yet ereport capable, send the
* report based on parent capabilities. This is needed for
* telemetry during enumeration.
*/
if (!DDI_FM_EREPORT_CAP(ddi_fm_capable(eqdip)))
eqdip = ddi_get_parent(eqdip);
/* Add "scsi." as a prefix to the class */
(void) snprintf(class, ERPT_CLASS_SZ, "%s.%s",
FM_SCSI_CLASS, error_class);
/*
* Get the path:
*
* If path_instance is non-zero then the packet was
* sent to scsi_vhci. We return the pathinfo path_string associated
* with the path_instance path - which refers to the actual hardware.
*
* If path_instance is zero then use the devpath provided by the
* caller; if it was NULL then this will cause fm_dev_ereport_post
* to use the devinfo path of the first devi we pass to it, ie
* sd->sd_dev.
*/
if (path_instance)
devpath = mdi_pi_pathname_by_instance(path_instance);
/*
* Set the minor_name to NULL. The block location of a media error
* is described by the 'lba' property. We use the 'lba' instead of
* the partition (minor_name) because the defect stays in the same
* place even when a repartition operation may result in the defect
* showing up in a different partition (minor_name). To support
* retire at the block/partition level, the user level retire agent
* should map the 'lba' to the current effected partition.
*/
minor_name = NULL;
/*
* NOTE: If there is a 'linked' ena to be had, it should likely come
* from the buf structure via the scsi_pkt pkt->pkt_bp.
*/
/* Post the ereport */
va_start(ap, pl);
fm_dev_ereport_postv(dip, eqdip, devpath, minor_name, devid, tpl0,
class, ena, sflag, pl, ap);
va_end(ap);
}
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