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freebsd-skq/sys/dev/mps/mps_sas_lsi.c
Conrad Meyer 86312e466c mps(4), mpr(4): remove SATA ID command cancellation hack 
Add a generic mechanism to override mp?_wait_command's timeout behavior,
which continues to invoke reinit by default.  Invokers who set
cm_timeout_handler may avoid automatic reinit and do their own handling.

Adapt mp?sas_get_sata_identify to this mechanism and remove its callout
hack.

Reviewed by:	scottl
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D18614
2018-12-21 20:30:52 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2011-2015 LSI Corp.
* Copyright (c) 2013-2015 Avago Technologies
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* Communications core for Avago Technologies (LSI) MPT2 */
/* TODO Move headers to mpsvar */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/selinfo.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <sys/sysctl.h>
#include <sys/endian.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/sbuf.h>
#include <sys/reboot.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <machine/stdarg.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_debug.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_periph.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <dev/mps/mpi/mpi2_type.h>
#include <dev/mps/mpi/mpi2.h>
#include <dev/mps/mpi/mpi2_ioc.h>
#include <dev/mps/mpi/mpi2_sas.h>
#include <dev/mps/mpi/mpi2_cnfg.h>
#include <dev/mps/mpi/mpi2_init.h>
#include <dev/mps/mpi/mpi2_raid.h>
#include <dev/mps/mpi/mpi2_tool.h>
#include <dev/mps/mps_ioctl.h>
#include <dev/mps/mpsvar.h>
#include <dev/mps/mps_table.h>
#include <dev/mps/mps_sas.h>
/* For Hashed SAS Address creation for SATA Drives */
#define MPT2SAS_SN_LEN 20
#define MPT2SAS_MN_LEN 40
struct mps_fw_event_work {
u16 event;
void *event_data;
TAILQ_ENTRY(mps_fw_event_work) ev_link;
};
union _sata_sas_address {
u8 wwid[8];
struct {
u32 high;
u32 low;
} word;
};
/*
* define the IDENTIFY DEVICE structure
*/
struct _ata_identify_device_data {
u16 reserved1[10]; /* 0-9 */
u16 serial_number[10]; /* 10-19 */
u16 reserved2[7]; /* 20-26 */
u16 model_number[20]; /* 27-46*/
u16 reserved3[170]; /* 47-216 */
u16 rotational_speed; /* 217 */
u16 reserved4[38]; /* 218-255 */
};
static u32 event_count;
static void mpssas_fw_work(struct mps_softc *sc,
struct mps_fw_event_work *fw_event);
static void mpssas_fw_event_free(struct mps_softc *,
struct mps_fw_event_work *);
static int mpssas_add_device(struct mps_softc *sc, u16 handle, u8 linkrate);
static int mpssas_get_sata_identify(struct mps_softc *sc, u16 handle,
Mpi2SataPassthroughReply_t *mpi_reply, char *id_buffer, int sz,
u32 devinfo);
static void mpssas_ata_id_timeout(struct mps_softc *, struct mps_command *);
int mpssas_get_sas_address_for_sata_disk(struct mps_softc *sc,
u64 *sas_address, u16 handle, u32 device_info, u8 *is_SATA_SSD);
static int mpssas_volume_add(struct mps_softc *sc,
u16 handle);
static void mpssas_SSU_to_SATA_devices(struct mps_softc *sc, int howto);
static void mpssas_stop_unit_done(struct cam_periph *periph,
union ccb *done_ccb);
void
mpssas_evt_handler(struct mps_softc *sc, uintptr_t data,
MPI2_EVENT_NOTIFICATION_REPLY *event)
{
struct mps_fw_event_work *fw_event;
u16 sz;
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
MPS_DPRINT_EVENT(sc, sas, event);
mpssas_record_event(sc, event);
fw_event = malloc(sizeof(struct mps_fw_event_work), M_MPT2,
M_ZERO|M_NOWAIT);
if (!fw_event) {
printf("%s: allocate failed for fw_event\n", __func__);
return;
}
sz = le16toh(event->EventDataLength) * 4;
fw_event->event_data = malloc(sz, M_MPT2, M_ZERO|M_NOWAIT);
if (!fw_event->event_data) {
printf("%s: allocate failed for event_data\n", __func__);
free(fw_event, M_MPT2);
return;
}
bcopy(event->EventData, fw_event->event_data, sz);
fw_event->event = event->Event;
if ((event->Event == MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
event->Event == MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE ||
event->Event == MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST) &&
sc->track_mapping_events)
sc->pending_map_events++;
/*
* When wait_for_port_enable flag is set, make sure that all the events
* are processed. Increment the startup_refcount and decrement it after
* events are processed.
*/
if ((event->Event == MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
event->Event == MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST) &&
sc->wait_for_port_enable)
mpssas_startup_increment(sc->sassc);
TAILQ_INSERT_TAIL(&sc->sassc->ev_queue, fw_event, ev_link);
taskqueue_enqueue(sc->sassc->ev_tq, &sc->sassc->ev_task);
}
static void
mpssas_fw_event_free(struct mps_softc *sc, struct mps_fw_event_work *fw_event)
{
free(fw_event->event_data, M_MPT2);
free(fw_event, M_MPT2);
}
/**
* _mps_fw_work - delayed task for processing firmware events
* @sc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
mpssas_fw_work(struct mps_softc *sc, struct mps_fw_event_work *fw_event)
{
struct mpssas_softc *sassc;
sassc = sc->sassc;
mps_dprint(sc, MPS_EVENT, "(%d)->(%s) Working on Event: [%x]\n",
event_count++,__func__,fw_event->event);
switch (fw_event->event) {
case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
{
MPI2_EVENT_DATA_SAS_TOPOLOGY_CHANGE_LIST *data;
MPI2_EVENT_SAS_TOPO_PHY_ENTRY *phy;
int i;
data = (MPI2_EVENT_DATA_SAS_TOPOLOGY_CHANGE_LIST *)
fw_event->event_data;
mps_mapping_topology_change_event(sc, fw_event->event_data);
for (i = 0; i < data->NumEntries; i++) {
phy = &data->PHY[i];
switch (phy->PhyStatus & MPI2_EVENT_SAS_TOPO_RC_MASK) {
case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
if (mpssas_add_device(sc,
le16toh(phy->AttachedDevHandle),
phy->LinkRate)){
mps_dprint(sc, MPS_ERROR, "%s: "
"failed to add device with handle "
"0x%x\n", __func__,
le16toh(phy->AttachedDevHandle));
mpssas_prepare_remove(sassc, le16toh(
phy->AttachedDevHandle));
}
break;
case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
mpssas_prepare_remove(sassc,le16toh(
phy->AttachedDevHandle));
break;
case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
default:
break;
}
}
/*
* refcount was incremented for this event in
* mpssas_evt_handler. Decrement it here because the event has
* been processed.
*/
mpssas_startup_decrement(sassc);
break;
}
case MPI2_EVENT_SAS_DISCOVERY:
{
MPI2_EVENT_DATA_SAS_DISCOVERY *data;
data = (MPI2_EVENT_DATA_SAS_DISCOVERY *)fw_event->event_data;
if (data->ReasonCode & MPI2_EVENT_SAS_DISC_RC_STARTED)
mps_dprint(sc, MPS_TRACE,"SAS discovery start event\n");
if (data->ReasonCode & MPI2_EVENT_SAS_DISC_RC_COMPLETED) {
mps_dprint(sc, MPS_TRACE,"SAS discovery stop event\n");
sassc->flags &= ~MPSSAS_IN_DISCOVERY;
mpssas_discovery_end(sassc);
}
break;
}
case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
{
Mpi2EventDataSasEnclDevStatusChange_t *data;
data = (Mpi2EventDataSasEnclDevStatusChange_t *)
fw_event->event_data;
mps_mapping_enclosure_dev_status_change_event(sc,
fw_event->event_data);
break;
}
case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
{
Mpi2EventIrConfigElement_t *element;
int i;
u8 foreign_config;
Mpi2EventDataIrConfigChangeList_t *event_data;
struct mpssas_target *targ;
unsigned int id;
event_data = fw_event->event_data;
foreign_config = (le32toh(event_data->Flags) &
MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
element =
(Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
id = mps_mapping_get_raid_tid_from_handle(sc,
element->VolDevHandle);
mps_mapping_ir_config_change_event(sc, event_data);
for (i = 0; i < event_data->NumElements; i++, element++) {
switch (element->ReasonCode) {
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
case MPI2_EVENT_IR_CHANGE_RC_ADDED:
if (!foreign_config) {
if (mpssas_volume_add(sc,
le16toh(element->VolDevHandle))){
printf("%s: failed to add RAID "
"volume with handle 0x%x\n",
__func__, le16toh(element->
VolDevHandle));
}
}
break;
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
/*
* Rescan after volume is deleted or removed.
*/
if (!foreign_config) {
if (id == MPS_MAP_BAD_ID) {
printf("%s: could not get ID "
"for volume with handle "
"0x%04x\n", __func__,
le16toh(element->VolDevHandle));
break;
}
targ = &sassc->targets[id];
targ->handle = 0x0;
targ->encl_slot = 0x0;
targ->encl_handle = 0x0;
targ->exp_dev_handle = 0x0;
targ->phy_num = 0x0;
targ->linkrate = 0x0;
mpssas_rescan_target(sc, targ);
printf("RAID target id 0x%x removed\n",
targ->tid);
}
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
case MPI2_EVENT_IR_CHANGE_RC_HIDE:
/*
* Phys Disk of a volume has been created. Hide
* it from the OS.
*/
targ = mpssas_find_target_by_handle(sassc, 0,
element->PhysDiskDevHandle);
if (targ == NULL)
break;
/*
* Set raid component flags only if it is not
* WD. OR WrapDrive with
* WD_HIDE_ALWAYS/WD_HIDE_IF_VOLUME is set in
* NVRAM
*/
if((!sc->WD_available) ||
((sc->WD_available &&
(sc->WD_hide_expose == MPS_WD_HIDE_ALWAYS)) ||
(sc->WD_valid_config && (sc->WD_hide_expose ==
MPS_WD_HIDE_IF_VOLUME)))) {
targ->flags |= MPS_TARGET_FLAGS_RAID_COMPONENT;
}
mpssas_rescan_target(sc, targ);
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
/*
* Phys Disk of a volume has been deleted.
* Expose it to the OS.
*/
if (mpssas_add_device(sc,
le16toh(element->PhysDiskDevHandle), 0)){
printf("%s: failed to add device with "
"handle 0x%x\n", __func__,
le16toh(element->PhysDiskDevHandle));
mpssas_prepare_remove(sassc, le16toh(element->
PhysDiskDevHandle));
}
break;
}
}
/*
* refcount was incremented for this event in
* mpssas_evt_handler. Decrement it here because the event has
* been processed.
*/
mpssas_startup_decrement(sassc);
break;
}
case MPI2_EVENT_IR_VOLUME:
{
Mpi2EventDataIrVolume_t *event_data = fw_event->event_data;
/*
* Informational only.
*/
mps_dprint(sc, MPS_EVENT, "Received IR Volume event:\n");
switch (event_data->ReasonCode) {
case MPI2_EVENT_IR_VOLUME_RC_SETTINGS_CHANGED:
mps_dprint(sc, MPS_EVENT, " Volume Settings "
"changed from 0x%x to 0x%x for Volome with "
"handle 0x%x", le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue),
le16toh(event_data->VolDevHandle));
break;
case MPI2_EVENT_IR_VOLUME_RC_STATUS_FLAGS_CHANGED:
mps_dprint(sc, MPS_EVENT, " Volume Status "
"changed from 0x%x to 0x%x for Volome with "
"handle 0x%x", le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue),
le16toh(event_data->VolDevHandle));
break;
case MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED:
mps_dprint(sc, MPS_EVENT, " Volume State "
"changed from 0x%x to 0x%x for Volome with "
"handle 0x%x", le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue),
le16toh(event_data->VolDevHandle));
u32 state;
struct mpssas_target *targ;
state = le32toh(event_data->NewValue);
switch (state) {
case MPI2_RAID_VOL_STATE_MISSING:
case MPI2_RAID_VOL_STATE_FAILED:
mpssas_prepare_volume_remove(sassc, event_data->
VolDevHandle);
break;
case MPI2_RAID_VOL_STATE_ONLINE:
case MPI2_RAID_VOL_STATE_DEGRADED:
case MPI2_RAID_VOL_STATE_OPTIMAL:
targ = mpssas_find_target_by_handle(sassc, 0, event_data->VolDevHandle);
if (targ) {
printf("%s %d: Volume handle 0x%x is already added \n",
__func__, __LINE__ , event_data->VolDevHandle);
break;
}
if (mpssas_volume_add(sc, le16toh(event_data->VolDevHandle))) {
printf("%s: failed to add RAID "
"volume with handle 0x%x\n",
__func__, le16toh(event_data->
VolDevHandle));
}
break;
default:
break;
}
break;
default:
break;
}
break;
}
case MPI2_EVENT_IR_PHYSICAL_DISK:
{
Mpi2EventDataIrPhysicalDisk_t *event_data =
fw_event->event_data;
struct mpssas_target *targ;
/*
* Informational only.
*/
mps_dprint(sc, MPS_EVENT, "Received IR Phys Disk event:\n");
switch (event_data->ReasonCode) {
case MPI2_EVENT_IR_PHYSDISK_RC_SETTINGS_CHANGED:
mps_dprint(sc, MPS_EVENT, " Phys Disk Settings "
"changed from 0x%x to 0x%x for Phys Disk Number "
"%d and handle 0x%x at Enclosure handle 0x%x, Slot "
"%d", le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue),
event_data->PhysDiskNum,
le16toh(event_data->PhysDiskDevHandle),
le16toh(event_data->EnclosureHandle), le16toh(event_data->Slot));
break;
case MPI2_EVENT_IR_PHYSDISK_RC_STATUS_FLAGS_CHANGED:
mps_dprint(sc, MPS_EVENT, " Phys Disk Status changed "
"from 0x%x to 0x%x for Phys Disk Number %d and "
"handle 0x%x at Enclosure handle 0x%x, Slot %d",
le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue), event_data->PhysDiskNum,
le16toh(event_data->PhysDiskDevHandle),
le16toh(event_data->EnclosureHandle), le16toh(event_data->Slot));
break;
case MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED:
mps_dprint(sc, MPS_EVENT, " Phys Disk State changed "
"from 0x%x to 0x%x for Phys Disk Number %d and "
"handle 0x%x at Enclosure handle 0x%x, Slot %d",
le32toh(event_data->PreviousValue),
le32toh(event_data->NewValue), event_data->PhysDiskNum,
le16toh(event_data->PhysDiskDevHandle),
le16toh(event_data->EnclosureHandle), le16toh(event_data->Slot));
switch (event_data->NewValue) {
case MPI2_RAID_PD_STATE_ONLINE:
case MPI2_RAID_PD_STATE_DEGRADED:
case MPI2_RAID_PD_STATE_REBUILDING:
case MPI2_RAID_PD_STATE_OPTIMAL:
case MPI2_RAID_PD_STATE_HOT_SPARE:
targ = mpssas_find_target_by_handle(sassc, 0,
event_data->PhysDiskDevHandle);
if (targ) {
if(!sc->WD_available) {
targ->flags |= MPS_TARGET_FLAGS_RAID_COMPONENT;
printf("%s %d: Found Target for handle 0x%x. \n",
__func__, __LINE__ , event_data->PhysDiskDevHandle);
} else if ((sc->WD_available &&
(sc->WD_hide_expose == MPS_WD_HIDE_ALWAYS)) ||
(sc->WD_valid_config && (sc->WD_hide_expose ==
MPS_WD_HIDE_IF_VOLUME))) {
targ->flags |= MPS_TARGET_FLAGS_RAID_COMPONENT;
printf("%s %d: WD: Found Target for handle 0x%x. \n",
__func__, __LINE__ , event_data->PhysDiskDevHandle);
}
}
break;
case MPI2_RAID_PD_STATE_OFFLINE:
case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
default:
targ = mpssas_find_target_by_handle(sassc, 0,
event_data->PhysDiskDevHandle);
if (targ) {
targ->flags |= ~MPS_TARGET_FLAGS_RAID_COMPONENT;
printf("%s %d: Found Target for handle 0x%x. \n",
__func__, __LINE__ , event_data->PhysDiskDevHandle);
}
break;
}
default:
break;
}
break;
}
case MPI2_EVENT_IR_OPERATION_STATUS:
{
Mpi2EventDataIrOperationStatus_t *event_data =
fw_event->event_data;
/*
* Informational only.
*/
mps_dprint(sc, MPS_EVENT, "Received IR Op Status event:\n");
mps_dprint(sc, MPS_EVENT, " RAID Operation of %d is %d "
"percent complete for Volume with handle 0x%x",
event_data->RAIDOperation, event_data->PercentComplete,
le16toh(event_data->VolDevHandle));
break;
}
case MPI2_EVENT_LOG_ENTRY_ADDED:
{
pMpi2EventDataLogEntryAdded_t logEntry;
uint16_t logQualifier;
uint8_t logCode;
logEntry = (pMpi2EventDataLogEntryAdded_t)fw_event->event_data;
logQualifier = logEntry->LogEntryQualifier;
if (logQualifier == MPI2_WD_LOG_ENTRY) {
logCode = logEntry->LogData[0];
switch (logCode) {
case MPI2_WD_SSD_THROTTLING:
printf("WarpDrive Warning: IO Throttling has "
"occurred in the WarpDrive subsystem. "
"Check WarpDrive documentation for "
"additional details\n");
break;
case MPI2_WD_DRIVE_LIFE_WARN:
printf("WarpDrive Warning: Program/Erase "
"Cycles for the WarpDrive subsystem in "
"degraded range. Check WarpDrive "
"documentation for additional details\n");
break;
case MPI2_WD_DRIVE_LIFE_DEAD:
printf("WarpDrive Fatal Error: There are no "
"Program/Erase Cycles for the WarpDrive "
"subsystem. The storage device will be in "
"read-only mode. Check WarpDrive "
"documentation for additional details\n");
break;
case MPI2_WD_RAIL_MON_FAIL:
printf("WarpDrive Fatal Error: The Backup Rail "
"Monitor has failed on the WarpDrive "
"subsystem. Check WarpDrive documentation "
"for additional details\n");
break;
default:
break;
}
}
break;
}
case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
default:
mps_dprint(sc, MPS_TRACE,"Unhandled event 0x%0X\n",
fw_event->event);
break;
}
mps_dprint(sc, MPS_EVENT, "(%d)->(%s) Event Free: [%x]\n",event_count,__func__, fw_event->event);
mpssas_fw_event_free(sc, fw_event);
}
void
mpssas_firmware_event_work(void *arg, int pending)
{
struct mps_fw_event_work *fw_event;
struct mps_softc *sc;
sc = (struct mps_softc *)arg;
mps_lock(sc);
while ((fw_event = TAILQ_FIRST(&sc->sassc->ev_queue)) != NULL) {
TAILQ_REMOVE(&sc->sassc->ev_queue, fw_event, ev_link);
mpssas_fw_work(sc, fw_event);
}
mps_unlock(sc);
}
static int
mpssas_add_device(struct mps_softc *sc, u16 handle, u8 linkrate){
char devstring[80];
struct mpssas_softc *sassc;
struct mpssas_target *targ;
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t config_page;
uint64_t sas_address;
uint64_t parent_sas_address = 0;
u32 device_info, parent_devinfo = 0;
unsigned int id;
int ret = 1, error = 0, i;
struct mpssas_lun *lun;
u8 is_SATA_SSD = 0;
struct mps_command *cm;
sassc = sc->sassc;
mpssas_startup_increment(sassc);
if (mps_config_get_sas_device_pg0(sc, &mpi_reply, &config_page,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle) != 0) {
mps_dprint(sc, MPS_INFO|MPS_MAPPING|MPS_FAULT,
"Error reading SAS device %#x page0, iocstatus= 0x%x\n",
handle, mpi_reply.IOCStatus);
error = ENXIO;
goto out;
}
device_info = le32toh(config_page.DeviceInfo);
if (((device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET) == 0)
&& (le16toh(config_page.ParentDevHandle) != 0)) {
Mpi2ConfigReply_t tmp_mpi_reply;
Mpi2SasDevicePage0_t parent_config_page;
if (mps_config_get_sas_device_pg0(sc, &tmp_mpi_reply,
&parent_config_page, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
le16toh(config_page.ParentDevHandle)) != 0) {
mps_dprint(sc, MPS_MAPPING|MPS_FAULT,
"Error reading parent SAS device %#x page0, "
"iocstatus= 0x%x\n",
le16toh(config_page.ParentDevHandle),
tmp_mpi_reply.IOCStatus);
} else {
parent_sas_address = parent_config_page.SASAddress.High;
parent_sas_address = (parent_sas_address << 32) |
parent_config_page.SASAddress.Low;
parent_devinfo = le32toh(parent_config_page.DeviceInfo);
}
}
/* TODO Check proper endianness */
sas_address = config_page.SASAddress.High;
sas_address = (sas_address << 32) | config_page.SASAddress.Low;
mps_dprint(sc, MPS_MAPPING, "Handle 0x%04x SAS Address from SAS device "
"page0 = %jx\n", handle, sas_address);
/*
* Always get SATA Identify information because this is used to
* determine if Start/Stop Unit should be sent to the drive when the
* system is shutdown.
*/
if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE) {
ret = mpssas_get_sas_address_for_sata_disk(sc, &sas_address,
handle, device_info, &is_SATA_SSD);
if (ret) {
mps_dprint(sc, MPS_MAPPING|MPS_ERROR,
"%s: failed to get disk type (SSD or HDD) for SATA "
"device with handle 0x%04x\n",
__func__, handle);
} else {
mps_dprint(sc, MPS_MAPPING, "Handle 0x%04x SAS Address "
"from SATA device = %jx\n", handle, sas_address);
}
}
/*
* use_phynum:
* 1 - use the PhyNum field as a fallback to the mapping logic
* 0 - never use the PhyNum field
* -1 - only use the PhyNum field
*
* Note that using the Phy number to map a device can cause device adds
* to fail if multiple enclosures/expanders are in the topology. For
* example, if two devices are in the same slot number in two different
* enclosures within the topology, only one of those devices will be
* added. PhyNum mapping should not be used if multiple enclosures are
* in the topology.
*/
id = MPS_MAP_BAD_ID;
if (sc->use_phynum != -1)
id = mps_mapping_get_tid(sc, sas_address, handle);
if (id == MPS_MAP_BAD_ID) {
if ((sc->use_phynum == 0)
|| ((id = config_page.PhyNum) > sassc->maxtargets)) {
mps_dprint(sc, MPS_INFO, "failure at %s:%d/%s()! "
"Could not get ID for device with handle 0x%04x\n",
__FILE__, __LINE__, __func__, handle);
error = ENXIO;
goto out;
}
}
mps_dprint(sc, MPS_MAPPING, "%s: Target ID for added device is %d.\n",
__func__, id);
/*
* Only do the ID check and reuse check if the target is not from a
* RAID Component. For Physical Disks of a Volume, the ID will be reused
* when a volume is deleted because the mapping entry for the PD will
* still be in the mapping table. The ID check should not be done here
* either since this PD is already being used.
*/
targ = &sassc->targets[id];
if (!(targ->flags & MPS_TARGET_FLAGS_RAID_COMPONENT)) {
if (mpssas_check_id(sassc, id) != 0) {
mps_dprint(sc, MPS_MAPPING|MPS_INFO,
"Excluding target id %d\n", id);
error = ENXIO;
goto out;
}
if (targ->handle != 0x0) {
mps_dprint(sc, MPS_MAPPING, "Attempting to reuse "
"target id %d handle 0x%04x\n", id, targ->handle);
error = ENXIO;
goto out;
}
}
targ->devinfo = device_info;
targ->devname = le32toh(config_page.DeviceName.High);
targ->devname = (targ->devname << 32) |
le32toh(config_page.DeviceName.Low);
targ->encl_handle = le16toh(config_page.EnclosureHandle);
targ->encl_slot = le16toh(config_page.Slot);
targ->handle = handle;
targ->parent_handle = le16toh(config_page.ParentDevHandle);
targ->sasaddr = mps_to_u64(&config_page.SASAddress);
targ->parent_sasaddr = le64toh(parent_sas_address);
targ->parent_devinfo = parent_devinfo;
targ->tid = id;
targ->linkrate = (linkrate>>4);
targ->flags = 0;
if (is_SATA_SSD) {
targ->flags = MPS_TARGET_IS_SATA_SSD;
}
TAILQ_INIT(&targ->commands);
TAILQ_INIT(&targ->timedout_commands);
while(!SLIST_EMPTY(&targ->luns)) {
lun = SLIST_FIRST(&targ->luns);
SLIST_REMOVE_HEAD(&targ->luns, lun_link);
free(lun, M_MPT2);
}
SLIST_INIT(&targ->luns);
mps_describe_devinfo(targ->devinfo, devstring, 80);
mps_dprint(sc, MPS_MAPPING, "Found device <%s> <%s> <0x%04x> <%d/%d>\n",
devstring, mps_describe_table(mps_linkrate_names, targ->linkrate),
targ->handle, targ->encl_handle, targ->encl_slot);
#if __FreeBSD_version < 1000039
if ((sassc->flags & MPSSAS_IN_STARTUP) == 0)
#endif
mpssas_rescan_target(sc, targ);
mps_dprint(sc, MPS_MAPPING, "Target id 0x%x added\n", targ->tid);
/*
* Check all commands to see if the SATA_ID_TIMEOUT flag has been set.
* If so, send a Target Reset TM to the target that was just created.
* An Abort Task TM should be used instead of a Target Reset, but that
* would be much more difficult because targets have not been fully
* discovered yet, and LUN's haven't been setup. So, just reset the
* target instead of the LUN.
*/
for (i = 1; i < sc->num_reqs; i++) {
cm = &sc->commands[i];
if (cm->cm_flags & MPS_CM_FLAGS_SATA_ID_TIMEOUT) {
targ->timeouts++;
cm->cm_state = MPS_CM_STATE_TIMEDOUT;
if ((targ->tm = mpssas_alloc_tm(sc)) != NULL) {
mps_dprint(sc, MPS_INFO, "%s: sending Target "
"Reset for stuck SATA identify command "
"(cm = %p)\n", __func__, cm);
targ->tm->cm_targ = targ;
mpssas_send_reset(sc, targ->tm,
MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
} else {
mps_dprint(sc, MPS_ERROR, "Failed to allocate "
"tm for Target Reset after SATA ID command "
"timed out (cm %p)\n", cm);
}
/*
* No need to check for more since the target is
* already being reset.
*/
break;
}
}
out:
/*
* Free the commands that may not have been freed from the SATA ID call
*/
for (i = 1; i < sc->num_reqs; i++) {
cm = &sc->commands[i];
if (cm->cm_flags & MPS_CM_FLAGS_SATA_ID_TIMEOUT) {
free(cm->cm_data, M_MPT2);
mps_free_command(sc, cm);
}
}
mpssas_startup_decrement(sassc);
return (error);
}
int
mpssas_get_sas_address_for_sata_disk(struct mps_softc *sc,
u64 *sas_address, u16 handle, u32 device_info, u8 *is_SATA_SSD)
{
Mpi2SataPassthroughReply_t mpi_reply;
int i, rc, try_count;
u32 *bufferptr;
union _sata_sas_address hash_address;
struct _ata_identify_device_data ata_identify;
u8 buffer[MPT2SAS_MN_LEN + MPT2SAS_SN_LEN];
u32 ioc_status;
u8 sas_status;
memset(&ata_identify, 0, sizeof(ata_identify));
try_count = 0;
do {
rc = mpssas_get_sata_identify(sc, handle, &mpi_reply,
(char *)&ata_identify, sizeof(ata_identify), device_info);
try_count++;
ioc_status = le16toh(mpi_reply.IOCStatus)
& MPI2_IOCSTATUS_MASK;
sas_status = mpi_reply.SASStatus;
switch (ioc_status) {
case MPI2_IOCSTATUS_SUCCESS:
break;
case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
/* No sense sleeping. this error won't get better */
break;
default:
if (sc->spinup_wait_time > 0) {
mps_dprint(sc, MPS_INFO, "Sleeping %d seconds "
"after SATA ID error to wait for spinup\n",
sc->spinup_wait_time);
msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0,
"mpsid", sc->spinup_wait_time * hz);
}
}
} while (((rc && (rc != EWOULDBLOCK)) ||
(ioc_status &&
(ioc_status != MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR))
|| sas_status) && (try_count < 5));
if (rc == 0 && !ioc_status && !sas_status) {
mps_dprint(sc, MPS_MAPPING, "%s: got SATA identify "
"successfully for handle = 0x%x with try_count = %d\n",
__func__, handle, try_count);
} else {
mps_dprint(sc, MPS_MAPPING, "%s: handle = 0x%x failed\n",
__func__, handle);
return -1;
}
/* Copy & byteswap the 40 byte model number to a buffer */
for (i = 0; i < MPT2SAS_MN_LEN; i += 2) {
buffer[i] = ((u8 *)ata_identify.model_number)[i + 1];
buffer[i + 1] = ((u8 *)ata_identify.model_number)[i];
}
/* Copy & byteswap the 20 byte serial number to a buffer */
for (i = 0; i < MPT2SAS_SN_LEN; i += 2) {
buffer[MPT2SAS_MN_LEN + i] =
((u8 *)ata_identify.serial_number)[i + 1];
buffer[MPT2SAS_MN_LEN + i + 1] =
((u8 *)ata_identify.serial_number)[i];
}
bufferptr = (u32 *)buffer;
/* There are 60 bytes to hash down to 8. 60 isn't divisible by 8,
* so loop through the first 56 bytes (7*8),
* and then add in the last dword.
*/
hash_address.word.low = 0;
hash_address.word.high = 0;
for (i = 0; (i < ((MPT2SAS_MN_LEN+MPT2SAS_SN_LEN)/8)); i++) {
hash_address.word.low += *bufferptr;
bufferptr++;
hash_address.word.high += *bufferptr;
bufferptr++;
}
/* Add the last dword */
hash_address.word.low += *bufferptr;
/* Make sure the hash doesn't start with 5, because it could clash
* with a SAS address. Change 5 to a D.
*/
if ((hash_address.word.high & 0x000000F0) == (0x00000050))
hash_address.word.high |= 0x00000080;
*sas_address = (u64)hash_address.wwid[0] << 56 |
(u64)hash_address.wwid[1] << 48 | (u64)hash_address.wwid[2] << 40 |
(u64)hash_address.wwid[3] << 32 | (u64)hash_address.wwid[4] << 24 |
(u64)hash_address.wwid[5] << 16 | (u64)hash_address.wwid[6] << 8 |
(u64)hash_address.wwid[7];
if (ata_identify.rotational_speed == 1) {
*is_SATA_SSD = 1;
}
return 0;
}
static int
mpssas_get_sata_identify(struct mps_softc *sc, u16 handle,
Mpi2SataPassthroughReply_t *mpi_reply, char *id_buffer, int sz, u32 devinfo)
{
Mpi2SataPassthroughRequest_t *mpi_request;
Mpi2SataPassthroughReply_t *reply = NULL;
struct mps_command *cm;
char *buffer;
int error = 0;
buffer = malloc( sz, M_MPT2, M_NOWAIT | M_ZERO);
if (!buffer)
return ENOMEM;
if ((cm = mps_alloc_command(sc)) == NULL) {
free(buffer, M_MPT2);
return (EBUSY);
}
mpi_request = (MPI2_SATA_PASSTHROUGH_REQUEST *)cm->cm_req;
bzero(mpi_request,sizeof(MPI2_SATA_PASSTHROUGH_REQUEST));
mpi_request->Function = MPI2_FUNCTION_SATA_PASSTHROUGH;
mpi_request->VF_ID = 0;
mpi_request->DevHandle = htole16(handle);
mpi_request->PassthroughFlags = (MPI2_SATA_PT_REQ_PT_FLAGS_PIO |
MPI2_SATA_PT_REQ_PT_FLAGS_READ);
mpi_request->DataLength = htole32(sz);
mpi_request->CommandFIS[0] = 0x27;
mpi_request->CommandFIS[1] = 0x80;
mpi_request->CommandFIS[2] = (devinfo &
MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? 0xA1 : 0xEC;
cm->cm_sge = &mpi_request->SGL;
cm->cm_sglsize = sizeof(MPI2_SGE_IO_UNION);
cm->cm_flags = MPS_CM_FLAGS_SGE_SIMPLE | MPS_CM_FLAGS_DATAIN;
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
cm->cm_data = buffer;
cm->cm_length = htole32(sz);
/*
* Use a custom handler to avoid reinit'ing the controller on timeout.
* This fixes a problem where the FW does not send a reply sometimes
* when a bad disk is in the topology. So, this is used to timeout the
* command so that processing can continue normally.
*/
cm->cm_timeout_handler = mpssas_ata_id_timeout;
error = mps_wait_command(sc, &cm, MPS_ATA_ID_TIMEOUT, CAN_SLEEP);
/* mpssas_ata_id_timeout does not reset controller */
KASSERT(cm != NULL, ("%s: surprise command freed", __func__));
reply = (Mpi2SataPassthroughReply_t *)cm->cm_reply;
if (error || (reply == NULL)) {
/* FIXME */
/*
* If the request returns an error then we need to do a diag
* reset
*/
mps_dprint(sc, MPS_INFO|MPS_FAULT|MPS_MAPPING,
"Request for SATA PASSTHROUGH page completed with error %d",
error);
error = ENXIO;
goto out;
}
bcopy(buffer, id_buffer, sz);
bcopy(reply, mpi_reply, sizeof(Mpi2SataPassthroughReply_t));
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS) {
mps_dprint(sc, MPS_INFO|MPS_MAPPING|MPS_FAULT,
"Error reading device %#x SATA PASSTHRU; iocstatus= 0x%x\n",
handle, reply->IOCStatus);
error = ENXIO;
goto out;
}
out:
/*
* If the SATA_ID_TIMEOUT flag has been set for this command, don't free
* it. The command and buffer will be freed after sending an Abort
* Task TM.
*/
if ((cm->cm_flags & MPS_CM_FLAGS_SATA_ID_TIMEOUT) == 0) {
mps_free_command(sc, cm);
free(buffer, M_MPT2);
}
return (error);
}
static void
mpssas_ata_id_timeout(struct mps_softc *sc, struct mps_command *cm)
{
mps_dprint(sc, MPS_INFO, "%s ATA ID command timeout cm %p sc %p\n",
__func__, cm, sc);
/*
* The Abort Task cannot be sent from here because the driver has not
* completed setting up targets. Instead, the command is flagged so
* that special handling will be used to send the abort.
*/
cm->cm_flags |= MPS_CM_FLAGS_SATA_ID_TIMEOUT;
}
static int
mpssas_volume_add(struct mps_softc *sc, u16 handle)
{
struct mpssas_softc *sassc;
struct mpssas_target *targ;
u64 wwid;
unsigned int id;
int error = 0;
struct mpssas_lun *lun;
sassc = sc->sassc;
mpssas_startup_increment(sassc);
/* wwid is endian safe */
mps_config_get_volume_wwid(sc, handle, &wwid);
if (!wwid) {
printf("%s: invalid WWID; cannot add volume to mapping table\n",
__func__);
error = ENXIO;
goto out;
}
id = mps_mapping_get_raid_tid(sc, wwid, handle);
if (id == MPS_MAP_BAD_ID) {
printf("%s: could not get ID for volume with handle 0x%04x and "
"WWID 0x%016llx\n", __func__, handle,
(unsigned long long)wwid);
error = ENXIO;
goto out;
}
targ = &sassc->targets[id];
targ->tid = id;
targ->handle = handle;
targ->devname = wwid;
TAILQ_INIT(&targ->commands);
TAILQ_INIT(&targ->timedout_commands);
while(!SLIST_EMPTY(&targ->luns)) {
lun = SLIST_FIRST(&targ->luns);
SLIST_REMOVE_HEAD(&targ->luns, lun_link);
free(lun, M_MPT2);
}
SLIST_INIT(&targ->luns);
#if __FreeBSD_version < 1000039
if ((sassc->flags & MPSSAS_IN_STARTUP) == 0)
#endif
mpssas_rescan_target(sc, targ);
mps_dprint(sc, MPS_MAPPING, "RAID target id %d added (WWID = 0x%jx)\n",
targ->tid, wwid);
out:
mpssas_startup_decrement(sassc);
return (error);
}
/**
* mpssas_SSU_to_SATA_devices
* @sc: per adapter object
* @howto: mast of RB_* bits for how we're rebooting
*
* Looks through the target list and issues a StartStopUnit SCSI command to each
* SATA direct-access device. This helps to ensure that data corruption is
* avoided when the system is being shut down. This must be called after the IR
* System Shutdown RAID Action is sent if in IR mode.
*
* Return nothing.
*/
static void
mpssas_SSU_to_SATA_devices(struct mps_softc *sc, int howto)
{
struct mpssas_softc *sassc = sc->sassc;
union ccb *ccb;
path_id_t pathid = cam_sim_path(sassc->sim);
target_id_t targetid;
struct mpssas_target *target;
char path_str[64];
int timeout;
/*
* For each target, issue a StartStopUnit command to stop the device.
*/
sc->SSU_started = TRUE;
sc->SSU_refcount = 0;
for (targetid = 0; targetid < sc->max_devices; targetid++) {
target = &sassc->targets[targetid];
if (target->handle == 0x0) {
continue;
}
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
mps_dprint(sc, MPS_FAULT, "Unable to alloc CCB to stop "
"unit.\n");
return;
}
/*
* The stop_at_shutdown flag will be set if this device is
* a SATA direct-access end device.
*/
if (target->stop_at_shutdown) {
if (xpt_create_path(&ccb->ccb_h.path,
xpt_periph, pathid, targetid,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
mps_dprint(sc, MPS_FAULT, "Unable to create "
"LUN path to stop unit.\n");
xpt_free_ccb(ccb);
return;
}
xpt_path_string(ccb->ccb_h.path, path_str,
sizeof(path_str));
mps_dprint(sc, MPS_INFO, "Sending StopUnit: path %s "
"handle %d\n", path_str, target->handle);
/*
* Issue a START STOP UNIT command for the target.
* Increment the SSU counter to be used to count the
* number of required replies.
*/
mps_dprint(sc, MPS_INFO, "Incrementing SSU count\n");
sc->SSU_refcount++;
ccb->ccb_h.target_id =
xpt_path_target_id(ccb->ccb_h.path);
ccb->ccb_h.ppriv_ptr1 = sassc;
scsi_start_stop(&ccb->csio,
/*retries*/0,
mpssas_stop_unit_done,
MSG_SIMPLE_Q_TAG,
/*start*/FALSE,
/*load/eject*/0,
/*immediate*/FALSE,
MPS_SENSE_LEN,
/*timeout*/10000);
xpt_action(ccb);
}
}
/*
* Timeout after 60 seconds by default or 10 seconds if howto has
* RB_NOSYNC set which indicates we're likely handling a panic.
*/
timeout = 600;
if (howto & RB_NOSYNC)
timeout = 100;
/*
* Wait until all of the SSU commands have completed or timeout has
* expired. Pause for 100ms each time through. If any command
* times out, the target will be reset in the SCSI command timeout
* routine.
*/
while (sc->SSU_refcount > 0) {
pause("mpswait", hz/10);
if (SCHEDULER_STOPPED())
xpt_sim_poll(sassc->sim);
if (--timeout == 0) {
mps_dprint(sc, MPS_FAULT, "Time has expired waiting "
"for SSU commands to complete.\n");
break;
}
}
}
static void
mpssas_stop_unit_done(struct cam_periph *periph, union ccb *done_ccb)
{
struct mpssas_softc *sassc;
char path_str[64];
if (done_ccb == NULL)
return;
sassc = (struct mpssas_softc *)done_ccb->ccb_h.ppriv_ptr1;
xpt_path_string(done_ccb->ccb_h.path, path_str, sizeof(path_str));
mps_dprint(sassc->sc, MPS_INFO, "Completing stop unit for %s\n",
path_str);
/*
* Nothing more to do except free the CCB and path. If the command
* timed out, an abort reset, then target reset will be issued during
* the SCSI Command process.
*/
xpt_free_path(done_ccb->ccb_h.path);
xpt_free_ccb(done_ccb);
}
/**
* mpssas_ir_shutdown - IR shutdown notification
* @sc: per adapter object
* @howto: mast of RB_* bits for how we're rebooting
*
* Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
* the host system is shutting down.
*
* Return nothing.
*/
void
mpssas_ir_shutdown(struct mps_softc *sc, int howto)
{
u16 volume_mapping_flags;
u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags);
struct dev_mapping_table *mt_entry;
u32 start_idx, end_idx;
unsigned int id, found_volume = 0;
struct mps_command *cm;
Mpi2RaidActionRequest_t *action;
target_id_t targetid;
struct mpssas_target *target;
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
/* is IR firmware build loaded? */
if (!sc->ir_firmware)
goto out;
/* are there any volumes? Look at IR target IDs. */
// TODO-later, this should be looked up in the RAID config structure
// when it is implemented.
volume_mapping_flags = le16toh(sc->ioc_pg8.IRVolumeMappingFlags) &
MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
if (volume_mapping_flags == MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
start_idx = 0;
if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_RESERVED_TARGETID_0)
start_idx = 1;
} else
start_idx = sc->max_devices - sc->max_volumes;
end_idx = start_idx + sc->max_volumes - 1;
for (id = start_idx; id < end_idx; id++) {
mt_entry = &sc->mapping_table[id];
if ((mt_entry->physical_id != 0) &&
(mt_entry->missing_count == 0)) {
found_volume = 1;
break;
}
}
if (!found_volume)
goto out;
if ((cm = mps_alloc_command(sc)) == NULL) {
printf("%s: command alloc failed\n", __func__);
goto out;
}
action = (MPI2_RAID_ACTION_REQUEST *)cm->cm_req;
action->Function = MPI2_FUNCTION_RAID_ACTION;
action->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
mps_lock(sc);
mps_wait_command(sc, &cm, 5, CAN_SLEEP);
mps_unlock(sc);
/*
* Don't check for reply, just leave.
*/
if (cm)
mps_free_command(sc, cm);
out:
/*
* All of the targets must have the correct value set for
* 'stop_at_shutdown' for the current 'enable_ssu' sysctl variable.
*
* The possible values for the 'enable_ssu' variable are:
* 0: disable to SSD and HDD
* 1: disable only to HDD (default)
* 2: disable only to SSD
* 3: enable to SSD and HDD
* anything else will default to 1.
*/
for (targetid = 0; targetid < sc->max_devices; targetid++) {
target = &sc->sassc->targets[targetid];
if (target->handle == 0x0) {
continue;
}
if (target->supports_SSU) {
switch (sc->enable_ssu) {
case MPS_SSU_DISABLE_SSD_DISABLE_HDD:
target->stop_at_shutdown = FALSE;
break;
case MPS_SSU_DISABLE_SSD_ENABLE_HDD:
target->stop_at_shutdown = TRUE;
if (target->flags & MPS_TARGET_IS_SATA_SSD) {
target->stop_at_shutdown = FALSE;
}
break;
case MPS_SSU_ENABLE_SSD_ENABLE_HDD:
target->stop_at_shutdown = TRUE;
break;
case MPS_SSU_ENABLE_SSD_DISABLE_HDD:
default:
target->stop_at_shutdown = TRUE;
if ((target->flags &
MPS_TARGET_IS_SATA_SSD) == 0) {
target->stop_at_shutdown = FALSE;
}
break;
}
}
}
mpssas_SSU_to_SATA_devices(sc, howto);
}
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