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This patch will add task management support in driver. Below is high level description:

Browse Source 
If a SCSI IO times out, then before initiating OCR, now the driver will try to send a
target reset to the particular target for which the IO is timed out. If that also fails,
then the driver will initiate OCR.

Submitted by:   Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed by:    Kashyap Desai <Kashyap.Desai@broadcom.com>
MFC after:  3 days
Sponsored by:   Broadcom Limited/AVAGO Technologies
This commit is contained in:
Kashyap D Desai 2016-11-29 13:01:31 +00:00
parent e2e8afb12c
commit 8bb601ac8a
3 changed files with 494 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
sys/dev/mrsas/mrsas.c
View File

@ -110,6 +110,7 @@ int mrsas_issue_polled(struct mrsas_softc *sc, struct mrsas_mfi_cmd *cmd);
int mrsas_reset_ctrl(struct mrsas_softc *sc, u_int8_t reset_reason);
int mrsas_wait_for_outstanding(struct mrsas_softc *sc, u_int8_t check_reason);
int mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex);
int mrsas_reset_targets(struct mrsas_softc *sc);
int
mrsas_issue_blocked_cmd(struct mrsas_softc *sc,
struct mrsas_mfi_cmd *cmd);
@ -306,28 +307,11 @@ mrsas_enable_intr(struct mrsas_softc *sc)
static int
mrsas_clear_intr(struct mrsas_softc *sc)
{
u_int32_t status, fw_status, fw_state;
u_int32_t status;
/* Read received interrupt */
status = mrsas_read_reg(sc, offsetof(mrsas_reg_set, outbound_intr_status));
/*
* If FW state change interrupt is received, write to it again to
* clear
*/
if (status & MRSAS_FW_STATE_CHNG_INTERRUPT) {
fw_status = mrsas_read_reg(sc, offsetof(mrsas_reg_set,
outbound_scratch_pad));
fw_state = fw_status & MFI_STATE_MASK;
if (fw_state == MFI_STATE_FAULT) {
device_printf(sc->mrsas_dev, "FW is in FAULT state!\n");
if (sc->ocr_thread_active)
wakeup(&sc->ocr_chan);
}
mrsas_write_reg(sc, offsetof(mrsas_reg_set, outbound_intr_status), status);
mrsas_read_reg(sc, offsetof(mrsas_reg_set, outbound_intr_status));
return (1);
}
/* Not our interrupt, so just return */
if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
return (0);
@ -882,6 +866,7 @@ mrsas_attach(device_t dev)
TAILQ_INIT(&sc->mrsas_mfi_cmd_list_head);
mrsas_atomic_set(&sc->fw_outstanding, 0);
mrsas_atomic_set(&sc->target_reset_outstanding, 0);
sc->io_cmds_highwater = 0;
@ -1556,7 +1541,10 @@ mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex)
PLD_LOAD_BALANCE_INFO lbinfo;
u_int32_t device_id;
int threshold_reply_count = 0;
#if TM_DEBUG
MR_TASK_MANAGE_REQUEST *mr_tm_req;
MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
#endif
/* If we have a hardware error, not need to continue */
if (sc->adprecovery == MRSAS_HW_CRITICAL_ERROR)
@ -1583,6 +1571,16 @@ mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex)
extStatus = scsi_io_req->RaidContext.exStatus;
switch (scsi_io_req->Function) {
case MPI2_FUNCTION_SCSI_TASK_MGMT:
#if TM_DEBUG
mr_tm_req = (MR_TASK_MANAGE_REQUEST *) cmd_mpt->io_request;
mpi_tm_req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)
&mr_tm_req->TmRequest;
device_printf(sc->mrsas_dev, "TM completion type 0x%X, "
"TaskMID: 0x%X", mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
#endif
wakeup_one((void *)&sc->ocr_chan);
break;
case MPI2_FUNCTION_SCSI_IO_REQUEST: /* Fast Path IO. */
device_id = cmd_mpt->ccb_ptr->ccb_h.target_id;
lbinfo = &sc->load_balance_info[device_id];
@ -2585,7 +2583,7 @@ mrsas_alloc_mpt_cmds(struct mrsas_softc *sc)
memset(cmd, 0, sizeof(struct mrsas_mpt_cmd));
cmd->index = i + 1;
cmd->ccb_ptr = NULL;
callout_init(&cmd->cm_callout, 0);
callout_init_mtx(&cmd->cm_callout, &sc->sim_lock, 0);
cmd->sync_cmd_idx = (u_int32_t)MRSAS_ULONG_MAX;
cmd->sc = sc;
cmd->io_request = (MRSAS_RAID_SCSI_IO_REQUEST *) (io_req_base + offset);
@ -2780,6 +2778,7 @@ mrsas_ocr_thread(void *arg)
{
struct mrsas_softc *sc;
u_int32_t fw_status, fw_state;
u_int8_t tm_target_reset_failed = 0;
sc = (struct mrsas_softc *)arg;
@ -2802,20 +2801,57 @@ mrsas_ocr_thread(void *arg)
fw_status = mrsas_read_reg(sc,
offsetof(mrsas_reg_set, outbound_scratch_pad));
fw_state = fw_status & MFI_STATE_MASK;
if (fw_state == MFI_STATE_FAULT || sc->do_timedout_reset) {
device_printf(sc->mrsas_dev, "%s started due to %s!\n",
sc->disableOnlineCtrlReset ? "Kill Adapter" : "OCR",
sc->do_timedout_reset ? "IO Timeout" :
"FW fault detected");
mtx_lock_spin(&sc->ioctl_lock);
sc->reset_in_progress = 1;
sc->reset_count++;
mtx_unlock_spin(&sc->ioctl_lock);
if (fw_state == MFI_STATE_FAULT || sc->do_timedout_reset ||
mrsas_atomic_read(&sc->target_reset_outstanding)) {
/* First, freeze further IOs to come to the SIM */
mrsas_xpt_freeze(sc);
mrsas_reset_ctrl(sc, sc->do_timedout_reset);
mrsas_xpt_release(sc);
sc->reset_in_progress = 0;
sc->do_timedout_reset = 0;
/* If this is an IO timeout then go for target reset */
if (mrsas_atomic_read(&sc->target_reset_outstanding)) {
device_printf(sc->mrsas_dev, "Initiating Target RESET "
"because of SCSI IO timeout!\n");
/* Let the remaining IOs to complete */
msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO,
"mrsas_reset_targets", 5 * hz);
/* Try to reset the target device */
if (mrsas_reset_targets(sc) == FAIL)
tm_target_reset_failed = 1;
}
/* If this is a DCMD timeout or FW fault,
* then go for controller reset
*/
if (fw_state == MFI_STATE_FAULT || tm_target_reset_failed ||
(sc->do_timedout_reset == MFI_DCMD_TIMEOUT_OCR)) {
if (tm_target_reset_failed)
device_printf(sc->mrsas_dev, "Initiaiting OCR because of "
"TM FAILURE!\n");
else
device_printf(sc->mrsas_dev, "Initiaiting OCR "
"because of %s!\n", sc->do_timedout_reset ?
"DCMD IO Timeout" : "FW fault");
mtx_lock_spin(&sc->ioctl_lock);
sc->reset_in_progress = 1;
mtx_unlock_spin(&sc->ioctl_lock);
sc->reset_count++;
/* Try to reset the controller */
mrsas_reset_ctrl(sc, sc->do_timedout_reset);
sc->do_timedout_reset = 0;
sc->reset_in_progress = 0;
tm_target_reset_failed = 0;
mrsas_atomic_set(&sc->target_reset_outstanding, 0);
memset(sc->target_reset_pool, 0,
sizeof(sc->target_reset_pool));
}
/* Now allow IOs to come to the SIM */
mrsas_xpt_release(sc);
}
}
mtx_unlock(&sc->sim_lock);

109
sys/dev/mrsas/mrsas.h
View File

@ -205,7 +205,9 @@ typedef struct _RAID_CONTEXT {
#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100)
#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004)
#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */
#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06)
#define MPI2_FUNCTION_SCSI_TASK_MGMT (0x01)
#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x03)
#define MPI2_REQ_DESCRIPT_FLAGS_FP_IO (0x06)
#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00)
#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02)
#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000)
@ -314,6 +316,91 @@ typedef union {
} MPI2_SCSI_IO_CDB_UNION, MPI2_POINTER PTR_MPI2_SCSI_IO_CDB_UNION,
Mpi2ScsiIoCdb_t, MPI2_POINTER pMpi2ScsiIoCdb_t;
/****************************************************************************
* * SCSI Task Management messages
* ****************************************************************************/
/*SCSI Task Management Request Message */
typedef struct _MPI2_SCSI_TASK_MANAGE_REQUEST {
u_int16_t DevHandle; /*0x00 */
u_int8_t ChainOffset; /*0x02 */
u_int8_t Function; /*0x03 */
u_int8_t Reserved1; /*0x04 */
u_int8_t TaskType; /*0x05 */
u_int8_t Reserved2; /*0x06 */
u_int8_t MsgFlags; /*0x07 */
u_int8_t VP_ID; /*0x08 */
u_int8_t VF_ID; /*0x09 */
u_int16_t Reserved3; /*0x0A */
u_int8_t LUN[8]; /*0x0C */
u_int32_t Reserved4[7]; /*0x14 */
u_int16_t TaskMID; /*0x30 */
u_int16_t Reserved5; /*0x32 */
} MPI2_SCSI_TASK_MANAGE_REQUEST;
/*SCSI Task Management Reply Message */
typedef struct _MPI2_SCSI_TASK_MANAGE_REPLY {
u_int16_t DevHandle; /*0x00 */
u_int8_t MsgLength; /*0x02 */
u_int8_t Function; /*0x03 */
u_int8_t ResponseCode; /*0x04 */
u_int8_t TaskType; /*0x05 */
u_int8_t Reserved1; /*0x06 */
u_int8_t MsgFlags; /*0x07 */
u_int8_t VP_ID; /*0x08 */
u_int8_t VF_ID; /*0x09 */
u_int16_t Reserved2; /*0x0A */
u_int16_t Reserved3; /*0x0C */
u_int16_t IOCStatus; /*0x0E */
u_int32_t IOCLogInfo; /*0x10 */
u_int32_t TerminationCount; /*0x14 */
u_int32_t ResponseInfo; /*0x18 */
} MPI2_SCSI_TASK_MANAGE_REPLY;
typedef struct _MR_TM_REQUEST {
char request[128];
} MR_TM_REQUEST;
typedef struct _MR_TM_REPLY {
char reply[128];
} MR_TM_REPLY;
/* SCSI Task Management Request Message */
typedef struct _MR_TASK_MANAGE_REQUEST {
/*To be type casted to struct MPI2_SCSI_TASK_MANAGE_REQUEST */
MR_TM_REQUEST TmRequest;
union {
struct {
u_int32_t isTMForLD:1;
u_int32_t isTMForPD:1;
u_int32_t reserved1:30;
u_int32_t reserved2;
} tmReqFlags;
MR_TM_REPLY TMReply;
} uTmReqReply;
} MR_TASK_MANAGE_REQUEST;
/* TaskType values */
#define MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK (0x01)
#define MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET (0x02)
#define MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET (0x03)
#define MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET (0x05)
#define MPI2_SCSITASKMGMT_TASKTYPE_CLEAR_TASK_SET (0x06)
#define MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK (0x07)
#define MPI2_SCSITASKMGMT_TASKTYPE_CLR_ACA (0x08)
#define MPI2_SCSITASKMGMT_TASKTYPE_QRY_TASK_SET (0x09)
#define MPI2_SCSITASKMGMT_TASKTYPE_QRY_ASYNC_EVENT (0x0A)
/* ResponseCode values */
#define MPI2_SCSITASKMGMT_RSP_TM_COMPLETE (0x00)
#define MPI2_SCSITASKMGMT_RSP_INVALID_FRAME (0x02)
#define MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED (0x04)
#define MPI2_SCSITASKMGMT_RSP_TM_FAILED (0x05)
#define MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED (0x08)
#define MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN (0x09)
#define MPI2_SCSITASKMGMT_RSP_TM_OVERLAPPED_TAG (0x0A)
#define MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC (0x80)
/*
* RAID SCSI IO Request Message Total SGE count will be one less than
* _MPI2_SCSI_IO_REQUEST
@ -584,7 +671,7 @@ Mpi2IOCInitRequest_t, MPI2_POINTER pMpi2IOCInitRequest_t;
#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES)
#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101
#define MR_DCMD_SYSTEM_PD_MAP_GET_INFO 0x0200e102
#define MR_DCMD_PD_MFI_TASK_MGMT 0x0200e100
#define MRSAS_MAX_PD_CHANNELS 1
#define MRSAS_MAX_LD_CHANNELS 1
@ -599,7 +686,7 @@ Mpi2IOCInitRequest_t, MPI2_POINTER pMpi2IOCInitRequest_t;
#define VD_EXT_DEBUG 0
#define TM_DEBUG 1
/*******************************************************************
* RAID map related structures
@ -659,7 +746,8 @@ typedef struct _MR_LD_RAID {
u_int32_t fpWriteAcrossStripe:1;
u_int32_t fpReadAcrossStripe:1;
u_int32_t fpNonRWCapable:1;
u_int32_t reserved4:7;
u_int32_t tmCapable:1;
u_int32_t reserved4:6;
} capability;
u_int32_t reserved6;
u_int64_t size;
@ -876,7 +964,11 @@ struct IO_REQUEST_INFO {
struct MR_PD_CFG_SEQ {
u_int16_t seqNum;
u_int16_t devHandle;
u_int8_t reserved[4];
struct {
u_int8_t tmCapable:1;
u_int8_t reserved:7;
} capability;
u_int8_t reserved[3];
} __packed;
struct MR_PD_CFG_SEQ_NUM_SYNC {
@ -1396,6 +1488,7 @@ struct mrsas_mpt_cmd {
union ccb *ccb_ptr;
struct callout cm_callout;
struct mrsas_softc *sc;
boolean_t tmCapable;
TAILQ_ENTRY(mrsas_mpt_cmd) next;
};
@ -2472,8 +2565,7 @@ struct mrsas_irq_context {
enum MEGASAS_OCR_REASON {
FW_FAULT_OCR = 0,
SCSIIO_TIMEOUT_OCR = 1,
MFI_DCMD_TIMEOUT_OCR = 2,
MFI_DCMD_TIMEOUT_OCR = 1,
};
/* Controller management info added to support Linux Emulator */
@ -2748,6 +2840,9 @@ struct mrsas_softc {
u_int8_t do_timedout_reset;
u_int32_t reset_in_progress;
u_int32_t reset_count;
mrsas_atomic_t target_reset_outstanding;
#define MRSAS_MAX_TM_TARGETS (MRSAS_MAX_PD + MRSAS_MAX_LD_IDS)
struct mrsas_mpt_cmd *target_reset_pool[MRSAS_MAX_TM_TARGETS];
bus_dma_tag_t jbodmap_tag[2];
bus_dmamap_t jbodmap_dmamap[2];

339
sys/dev/mrsas/mrsas_cam.c
View File

@ -95,6 +95,11 @@ static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim);
static void mrsas_cam_poll(struct cam_sim *sim);
static void mrsas_action(struct cam_sim *sim, union ccb *ccb);
static void mrsas_scsiio_timeout(void *data);
static int mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t id, u_int32_t bus_id);
static void mrsas_tm_response_code(struct mrsas_softc *sc,
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply);
static int mrsas_issue_tm(struct mrsas_softc *sc,
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc);
static void
mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs,
int nseg, int error);
@ -105,6 +110,10 @@ struct mrsas_mpt_cmd *mrsas_get_mpt_cmd(struct mrsas_softc *sc);
MRSAS_REQUEST_DESCRIPTOR_UNION *
mrsas_get_request_desc(struct mrsas_softc *sc, u_int16_t index);
extern void
mrsas_map_mpt_cmd_status(struct mrsas_mpt_cmd *cmd, u_int8_t status,
u_int8_t extStatus);
extern int mrsas_reset_targets(struct mrsas_softc *sc);
extern u_int16_t MR_TargetIdToLdGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map);
extern u_int32_t
MR_LdBlockSizeGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map,
@ -125,6 +134,9 @@ extern u_int8_t
megasas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, u_int8_t arm,
u_int64_t block, u_int32_t count);
extern int mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex);
extern MR_LD_RAID *MR_LdRaidGet(u_int32_t ld, MR_DRV_RAID_MAP_ALL * map);
extern void mrsas_disable_intr(struct mrsas_softc *sc);
extern void mrsas_enable_intr(struct mrsas_softc *sc);
/*
@ -386,6 +398,10 @@ mrsas_scsiio_timeout(void *data)
{
struct mrsas_mpt_cmd *cmd;
struct mrsas_softc *sc;
u_int32_t target_id;
if (!data)
return;
cmd = (struct mrsas_mpt_cmd *)data;
sc = cmd->sc;
@ -394,6 +410,7 @@ mrsas_scsiio_timeout(void *data)
printf("command timeout with NULL ccb\n");
return;
}
/*
* Below callout is dummy entry so that it will be cancelled from
* mrsas_cmd_done(). Now Controller will go to OCR/Kill Adapter based
@ -401,15 +418,25 @@ mrsas_scsiio_timeout(void *data)
* context.
*/
#if (__FreeBSD_version >= 1000510)
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 600, 0,
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
mrsas_scsiio_timeout, cmd, 0);
#else
callout_reset(&cmd->cm_callout, (600000 * hz) / 1000,
callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
#endif
sc->do_timedout_reset = SCSIIO_TIMEOUT_OCR;
if (sc->ocr_thread_active)
wakeup(&sc->ocr_chan);
if (cmd->ccb_ptr->cpi.bus_id == 0)
target_id = cmd->ccb_ptr->ccb_h.target_id;
else
target_id = (cmd->ccb_ptr->ccb_h.target_id + (MRSAS_MAX_PD - 1));
/* Save the cmd to be processed for TM, if it is not there in the array */
if (sc->target_reset_pool[target_id] == NULL) {
sc->target_reset_pool[target_id] = cmd;
mrsas_atomic_inc(&sc->target_reset_outstanding);
}
return;
}
/*
@ -596,10 +623,10 @@ mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim,
* Start timer for IO timeout. Default timeout value is 90 second.
*/
#if (__FreeBSD_version >= 1000510)
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 600, 0,
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
mrsas_scsiio_timeout, cmd, 0);
#else
callout_reset(&cmd->cm_callout, (600000 * hz) / 1000,
callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
#endif
mrsas_atomic_inc(&sc->fw_outstanding);
@ -788,8 +815,9 @@ mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
struct ccb_scsiio *csio = &(ccb->csio);
struct IO_REQUEST_INFO io_info;
MR_DRV_RAID_MAP_ALL *map_ptr;
MR_LD_RAID *raid;
u_int8_t fp_possible;
u_int32_t start_lba_hi, start_lba_lo, ld_block_size;
u_int32_t start_lba_hi, start_lba_lo, ld_block_size, ld;
u_int32_t datalength = 0;
start_lba_lo = 0;
@ -868,8 +896,8 @@ mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
ld_block_size = MR_LdBlockSizeGet(device_id, map_ptr, sc);
if ((MR_TargetIdToLdGet(device_id, map_ptr) >= MAX_LOGICAL_DRIVES_EXT) ||
(!sc->fast_path_io)) {
ld = MR_TargetIdToLdGet(device_id, map_ptr);
if ((ld >= MAX_LOGICAL_DRIVES_EXT) || (!sc->fast_path_io)) {
io_request->RaidContext.regLockFlags = 0;
fp_possible = 0;
} else {
@ -877,6 +905,10 @@ mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
fp_possible = io_info.fpOkForIo;
}
raid = MR_LdRaidGet(ld, map_ptr);
/* Store the TM capability value in cmd */
cmd->tmCapable = raid->capability.tmCapable;
cmd->request_desc->SCSIIO.MSIxIndex =
sc->msix_vectors ? smp_processor_id() % sc->msix_vectors : 0;
@ -886,7 +918,7 @@ mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
start_lba_lo, ld_block_size);
io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
(MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (sc->mrsas_gen3_ctrl) {
if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED)
@ -948,12 +980,20 @@ mrsas_build_ldio_nonrw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
u_int32_t device_id;
u_int32_t device_id, ld;
MR_DRV_RAID_MAP_ALL *map_ptr;
MR_LD_RAID *raid;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
io_request = cmd->io_request;
device_id = ccb_h->target_id;
map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
ld = MR_TargetIdToLdGet(device_id, map_ptr);
raid = MR_LdRaidGet(ld, map_ptr);
/* Store the TM capability value in cmd */
cmd->tmCapable = raid->capability.tmCapable;
/* FW path for LD Non-RW (SCSI management commands) */
io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = device_id;
@ -1003,8 +1043,6 @@ mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
pd_sync = (void *)sc->jbodmap_mem[(sc->pd_seq_map_id - 1) & 1];
io_request = cmd->io_request;
device_id = ccb_h->target_id;
local_map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
@ -1018,6 +1056,8 @@ mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
if (sc->use_seqnum_jbod_fp &&
sc->pd_list[device_id].driveType == 0x00) {
//printf("Using Drv seq num\n");
pd_sync = (void *)sc->jbodmap_mem[(sc->pd_seq_map_id - 1) & 1];
cmd->tmCapable = pd_sync->seq[device_id].capability.tmCapable;
io_request->RaidContext.VirtualDiskTgtId = device_id + 255;
io_request->RaidContext.configSeqNum = pd_sync->seq[device_id].seqNum;
io_request->DevHandle = pd_sync->seq[device_id].devHandle;
@ -1066,7 +1106,7 @@ mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
(MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
}
@ -1276,9 +1316,10 @@ mrsas_xpt_release(struct mrsas_softc *sc)
void
mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
{
callout_stop(&cmd->cm_callout);
mrsas_unmap_request(sc, cmd);
mtx_lock(&sc->sim_lock);
callout_stop(&cmd->cm_callout);
xpt_done(cmd->ccb_ptr);
cmd->ccb_ptr = NULL;
mtx_unlock(&sc->sim_lock);
@ -1376,3 +1417,269 @@ mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim)
return (0);
}
/*
* mrsas_track_scsiio: Track IOs for a given target in the mpt_cmd_list
* input: Adapter instance soft state
* Target ID of target
* Bus ID of the target
*
* This function checks for any pending IO in the whole mpt_cmd_list pool
* with the bus_id and target_id passed in arguments. If some IO is found
* that means target reset is not successfully completed.
*
* Returns FAIL if IOs pending to the target device, else return SUCCESS
*/
static int
mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t tgt_id, u_int32_t bus_id)
{
int i;
struct mrsas_mpt_cmd *mpt_cmd = NULL;
for (i = 0 ; i < sc->max_fw_cmds; i++) {
mpt_cmd = sc->mpt_cmd_list[i];
/*
* Check if the target_id and bus_id is same as the timeout IO
*/
if (mpt_cmd->ccb_ptr) {
/* bus_id = 1 denotes a VD */
if (bus_id == 1)
tgt_id = (mpt_cmd->ccb_ptr->ccb_h.target_id - (MRSAS_MAX_PD - 1));
if (mpt_cmd->ccb_ptr->cpi.bus_id == bus_id &&
mpt_cmd->ccb_ptr->ccb_h.target_id == tgt_id) {
device_printf(sc->mrsas_dev,
"IO commands pending to target id %d\n", tgt_id);
return FAIL;
}
}
}
return SUCCESS;
}
#if TM_DEBUG
/*
* mrsas_tm_response_code: Prints TM response code received from FW
* input: Adapter instance soft state
* MPI reply returned from firmware
*
* Returns nothing.
*/
static void
mrsas_tm_response_code(struct mrsas_softc *sc,
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
{
char *desc;
switch (mpi_reply->ResponseCode) {
case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
desc = "task management request completed";
break;
case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
desc = "invalid frame";
break;
case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
desc = "task management request not supported";
break;
case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
desc = "task management request failed";
break;
case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
desc = "task management request succeeded";
break;
case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
desc = "invalid lun";
break;
case 0xA:
desc = "overlapped tag attempted";
break;
case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
desc = "task queued, however not sent to target";
break;
default:
desc = "unknown";
break;
}
device_printf(sc->mrsas_dev, "response_code(%01x): %s\n",
mpi_reply->ResponseCode, desc);
device_printf(sc->mrsas_dev,
"TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo\n"
"0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
mpi_reply->TerminationCount, mpi_reply->DevHandle,
mpi_reply->Function, mpi_reply->TaskType,
mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
}
#endif
/*
* mrsas_issue_tm: Fires the TM command to FW and waits for completion
* input: Adapter instance soft state
* reqest descriptor compiled by mrsas_reset_targets
*
* Returns FAIL if TM command TIMEDOUT from FW else SUCCESS.
*/
static int
mrsas_issue_tm(struct mrsas_softc *sc,
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc)
{
int sleep_stat;
mrsas_fire_cmd(sc, req_desc->addr.u.low, req_desc->addr.u.high);
sleep_stat = msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "tm_sleep", 50*hz);
if (sleep_stat == EWOULDBLOCK) {
device_printf(sc->mrsas_dev, "tm cmd TIMEDOUT\n");
return FAIL;
}
return SUCCESS;
}
/*
* mrsas_reset_targets : Gathers info to fire a target reset command
* input: Adapter instance soft state
*
* This function compiles data for a target reset command to be fired to the FW
* and then traverse the target_reset_pool to see targets with TIMEDOUT IOs.
*
* Returns SUCCESS or FAIL
*/
int mrsas_reset_targets(struct mrsas_softc *sc)
{
struct mrsas_mpt_cmd *tm_mpt_cmd = NULL;
struct mrsas_mpt_cmd *tgt_mpt_cmd = NULL;
MR_TASK_MANAGE_REQUEST *mr_request;
MPI2_SCSI_TASK_MANAGE_REQUEST *tm_mpi_request;
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
int retCode = FAIL, count, i, outstanding;
u_int32_t MSIxIndex, bus_id;
target_id_t tgt_id;
#if TM_DEBUG
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
#endif
outstanding = mrsas_atomic_read(&sc->fw_outstanding);
if (!outstanding) {
device_printf(sc->mrsas_dev, "NO IOs pending...\n");
mrsas_atomic_set(&sc->target_reset_outstanding, 0);
retCode = SUCCESS;
goto return_status;
} else if (sc->adprecovery != MRSAS_HBA_OPERATIONAL) {
device_printf(sc->mrsas_dev, "Controller is not operational\n");
goto return_status;
} else {
/* Some more error checks will be added in future */
}
/* Get an mpt frame and an index to fire the TM cmd */
tm_mpt_cmd = mrsas_get_mpt_cmd(sc);
if (!tm_mpt_cmd) {
retCode = FAIL;
goto return_status;
}
req_desc = mrsas_get_request_desc(sc, (tm_mpt_cmd->index) - 1);
if (!req_desc) {
device_printf(sc->mrsas_dev, "Cannot get request_descriptor for tm.\n");
retCode = FAIL;
goto release_mpt;
}
memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION));
req_desc->HighPriority.SMID = tm_mpt_cmd->index;
req_desc->HighPriority.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
req_desc->HighPriority.MSIxIndex = 0;
req_desc->HighPriority.LMID = 0;
req_desc->HighPriority.Reserved1 = 0;
tm_mpt_cmd->request_desc = req_desc;
mr_request = (MR_TASK_MANAGE_REQUEST *) tm_mpt_cmd->io_request;
memset(mr_request, 0, sizeof(MR_TASK_MANAGE_REQUEST));
tm_mpi_request = (MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
tm_mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
tm_mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
tm_mpi_request->TaskMID = 0; /* smid task */
tm_mpi_request->LUN[1] = 0;
/* Traverse the tm_mpt pool to get valid entries */
for (i = 0 ; i < MRSAS_MAX_TM_TARGETS; i++) {
if(!sc->target_reset_pool[i]) {
continue;
} else {
tgt_mpt_cmd = sc->target_reset_pool[i];
}
tgt_id = i;
/* See if the target is tm capable or NOT */
if (!tgt_mpt_cmd->tmCapable) {
device_printf(sc->mrsas_dev, "Task management NOT SUPPORTED for "
"CAM target:%d\n", tgt_id);
retCode = FAIL;
goto release_mpt;
}
tm_mpi_request->DevHandle = tgt_mpt_cmd->io_request->DevHandle;
if (i < (MRSAS_MAX_PD - 1)) {
mr_request->uTmReqReply.tmReqFlags.isTMForPD = 1;
bus_id = 0;
} else {
mr_request->uTmReqReply.tmReqFlags.isTMForLD = 1;
bus_id = 1;
}
device_printf(sc->mrsas_dev, "TM will be fired for "
"CAM target:%d and bus_id %d\n", tgt_id, bus_id);
sc->ocr_chan = (void *)&tm_mpt_cmd;
retCode = mrsas_issue_tm(sc, req_desc);
if (retCode == FAIL)
goto release_mpt;
#if TM_DEBUG
mpi_reply =
(MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->uTmReqReply.TMReply;
mrsas_tm_response_code(sc, mpi_reply);
#endif
mrsas_atomic_dec(&sc->target_reset_outstanding);
sc->target_reset_pool[i] = NULL;
/* Check for pending cmds in the mpt_cmd_pool with the tgt_id */
mrsas_disable_intr(sc);
/* Wait for 1 second to complete parallel ISR calling same
* mrsas_complete_cmd()
*/
msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "mrsas_reset_wakeup",
1 * hz);
count = sc->msix_vectors > 0 ? sc->msix_vectors : 1;
mtx_unlock(&sc->sim_lock);
for (MSIxIndex = 0; MSIxIndex < count; MSIxIndex++)
mrsas_complete_cmd(sc, MSIxIndex);
mtx_lock(&sc->sim_lock);
retCode = mrsas_track_scsiio(sc, tgt_id, bus_id);
mrsas_enable_intr(sc);
if (retCode == FAIL)
goto release_mpt;
}
device_printf(sc->mrsas_dev, "Number of targets outstanding "
"after reset: %d\n", mrsas_atomic_read(&sc->target_reset_outstanding));
release_mpt:
mrsas_release_mpt_cmd(tm_mpt_cmd);
return_status:
device_printf(sc->mrsas_dev, "target reset %s!!\n",
(retCode == SUCCESS) ? "SUCCESS" : "FAIL");
return retCode;
}