d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
cf7a096e72
freebsd-dev/sys/dev/mrsas/mrsas_cam.c
Kashyap D Desai 49328cc39c Fix for WITNESS warning while doing xpt_rescan. 
This happen when converting any JBOD to RAID or creating
any new RAID from Unconfigured Drives.

Without this fix, user may see below call trace if  WITNESS is enabled.

witness_warn() at witness_warn+0x4b5/frame 0xfffffe011f929a00
uma_zalloc_arg() at uma_zalloc_arg+0x3b/frame 0xfffffe011f929a70
malloc() at malloc+0x192/frame 0xfffffe011f929ac0
mrsas_bus_scan_sim() at mrsas_bus_scan_sim+0x32/frame 0xfffffe011f929af0
mrsas_aen_handler() at mrsas_aen_handler+0x11c/frame 0xfffffe011f929b20
taskqueue_run_locked() at taskqueue_run_locked+0xf0/frame 0xfffffe011f929b80
taskqueue_thread_loop() at taskqueue_thread_loop+0x9b/frame 0xfffffe011f929bb0
fork_exit() at fork_exit+0x84/frame 0xfffffe011f929bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe011f929bf0

Submitted by:   kadesai
Reviewed by:    ambrisko
MFC after:      3 days
2014-09-02 18:32:41 +00:00

1177 lines
40 KiB
C
Raw Blame History

/*
* Copyright (c) 2014, LSI Corp.
* All rights reserved.
* Author: Marian Choy
* Support: freebsdraid@lsi.com
*
* 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.
* 3. Neither the name of the <ORGANIZATION> nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "dev/mrsas/mrsas.h"
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_debug.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <sys/taskqueue.h>
/*
* Function prototypes
*/
int mrsas_cam_attach(struct mrsas_softc *sc);
//int mrsas_ldio_inq(union ccb *ccb);
int mrsas_ldio_inq(struct cam_sim *sim, union ccb *ccb);
int mrsas_bus_scan(struct mrsas_softc *sc);
int mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim);
int mrsas_map_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd);
int mrsas_build_ldio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb);
int mrsas_build_dcdb(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, struct cam_sim *sim);
int mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, u_int32_t device_id,
MRSAS_RAID_SCSI_IO_REQUEST *io_request);
void mrsas_xpt_freeze(struct mrsas_softc *sc);
void mrsas_xpt_release(struct mrsas_softc *sc);
void mrsas_cam_detach(struct mrsas_softc *sc);
void mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd);
void mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd);
void mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd);
void mrsas_fire_cmd(struct mrsas_softc *sc, u_int32_t req_desc_lo,
u_int32_t req_desc_hi);
void mrsas_set_pd_lba(MRSAS_RAID_SCSI_IO_REQUEST *io_request, u_int8_t cdb_len,
struct IO_REQUEST_INFO *io_info, union ccb *ccb,
MR_FW_RAID_MAP_ALL *local_map_ptr, u_int32_t ref_tag,
u_int32_t ld_block_size);
static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim);
static void mrsas_poll(struct cam_sim *sim);
static void mrsas_action(struct cam_sim *sim, union ccb *ccb);
static void mrsas_scsiio_timeout(void *data);
static void mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs,
int nseg, int error);
static int32_t mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim,
union ccb *ccb);
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 u_int16_t MR_TargetIdToLdGet(u_int32_t ldTgtId, MR_FW_RAID_MAP_ALL *map);
extern u_int32_t MR_LdBlockSizeGet(u_int32_t ldTgtId, MR_FW_RAID_MAP_ALL *map,
struct mrsas_softc *sc);
extern void mrsas_isr(void *arg);
extern void mrsas_aen_handler(struct mrsas_softc *sc);
extern u_int8_t MR_BuildRaidContext(struct mrsas_softc *sc,
struct IO_REQUEST_INFO *io_info,RAID_CONTEXT *pRAID_Context,
MR_FW_RAID_MAP_ALL *map);
extern u_int16_t MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span,
MR_FW_RAID_MAP_ALL *map);
extern u_int16_t mrsas_get_updated_dev_handle(PLD_LOAD_BALANCE_INFO lbInfo,
struct IO_REQUEST_INFO *io_info);
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);
/**
* mrsas_cam_attach: Main entry to CAM subsystem
* input: Adapter instance soft state
*
* This function is called from mrsas_attach() during initialization
* to perform SIM allocations and XPT bus registration. If the kernel
* version is 7.4 or earlier, it would also initiate a bus scan.
*/
int mrsas_cam_attach(struct mrsas_softc *sc)
{
struct cam_devq *devq;
int mrsas_cam_depth;
mrsas_cam_depth = sc->max_fw_cmds - MRSAS_INTERNAL_CMDS;
if ((devq = cam_simq_alloc(mrsas_cam_depth)) == NULL) {
device_printf(sc->mrsas_dev, "Cannot allocate SIM queue\n");
return(ENOMEM);
}
/*
* Create SIM for bus 0 and register, also create path
*/
sc->sim_0 = cam_sim_alloc(mrsas_action, mrsas_poll, "mrsas", sc,
device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth,
mrsas_cam_depth, devq);
if (sc->sim_0 == NULL){
cam_simq_free(devq);
device_printf(sc->mrsas_dev, "Cannot register SIM\n");
return(ENXIO);
}
/* Initialize taskqueue for Event Handling */
TASK_INIT(&sc->ev_task, 0, (void *)mrsas_aen_handler, sc);
sc->ev_tq = taskqueue_create("mrsas_taskq", M_NOWAIT | M_ZERO,
taskqueue_thread_enqueue, &sc->ev_tq);
/* Run the task queue with lowest priority */
taskqueue_start_threads(&sc->ev_tq, 1, 255, "%s taskq",
device_get_nameunit(sc->mrsas_dev));
mtx_lock(&sc->sim_lock);
if (xpt_bus_register(sc->sim_0, sc->mrsas_dev,0) != CAM_SUCCESS)
{
cam_sim_free(sc->sim_0, TRUE); // passing true frees the devq
mtx_unlock(&sc->sim_lock);
return(ENXIO);
}
if (xpt_create_path(&sc->path_0, NULL, cam_sim_path(sc->sim_0),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sc->sim_0));
cam_sim_free(sc->sim_0, TRUE); // passing true will free the devq
mtx_unlock(&sc->sim_lock);
return(ENXIO);
}
mtx_unlock(&sc->sim_lock);
/*
* Create SIM for bus 1 and register, also create path
*/
sc->sim_1 = cam_sim_alloc(mrsas_action, mrsas_poll, "mrsas", sc,
device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth,
mrsas_cam_depth, devq);
if (sc->sim_1 == NULL){
cam_simq_free(devq);
device_printf(sc->mrsas_dev, "Cannot register SIM\n");
return(ENXIO);
}
mtx_lock(&sc->sim_lock);
if (xpt_bus_register(sc->sim_1, sc->mrsas_dev, 1) != CAM_SUCCESS){
cam_sim_free(sc->sim_1, TRUE); // passing true frees the devq
mtx_unlock(&sc->sim_lock);
return(ENXIO);
}
if (xpt_create_path(&sc->path_1, NULL, cam_sim_path(sc->sim_1),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sc->sim_1));
cam_sim_free(sc->sim_1, TRUE);
mtx_unlock(&sc->sim_lock);
return(ENXIO);
}
mtx_unlock(&sc->sim_lock);
#if (__FreeBSD_version <= 704000)
if (mrsas_bus_scan(sc)){
device_printf(sc->mrsas_dev, "Error in bus scan.\n");
return(1);
}
#endif
return(0);
}
/**
* mrsas_cam_detach: De-allocates and teardown CAM
* input: Adapter instance soft state
*
* De-registers and frees the paths and SIMs.
*/
void mrsas_cam_detach(struct mrsas_softc *sc)
{
if (sc->ev_tq != NULL)
taskqueue_free(sc->ev_tq);
mtx_lock(&sc->sim_lock);
if (sc->path_0)
xpt_free_path(sc->path_0);
if (sc->sim_0) {
xpt_bus_deregister(cam_sim_path(sc->sim_0));
cam_sim_free(sc->sim_0, FALSE);
}
if (sc->path_1)
xpt_free_path(sc->path_1);
if (sc->sim_1) {
xpt_bus_deregister(cam_sim_path(sc->sim_1));
cam_sim_free(sc->sim_1, TRUE);
}
mtx_unlock(&sc->sim_lock);
}
/**
* mrsas_action: SIM callback entry point
* input: pointer to SIM
* pointer to CAM Control Block
*
* This function processes CAM subsystem requests. The type of request is
* stored in ccb->ccb_h.func_code. The preprocessor #ifdef is necessary
* because ccb->cpi.maxio is not supported for FreeBSD version 7.4 or
* earlier.
*/
static void mrsas_action(struct cam_sim *sim, union ccb *ccb)
{
struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim);
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
u_int32_t device_id;
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
{
device_id = ccb_h->target_id;
/*
* bus 0 is LD, bus 1 is for system-PD
*/
if (cam_sim_bus(sim) == 1 &&
sc->pd_list[device_id].driveState != MR_PD_STATE_SYSTEM) {
ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
xpt_done(ccb);
}
else {
if (mrsas_startio(sc, sim, ccb)){
ccb->ccb_h.status |= CAM_REQ_INVALID;
xpt_done(ccb);
}
}
break;
}
case XPT_ABORT:
{
ccb->ccb_h.status = CAM_UA_ABORT;
xpt_done(ccb);
break;
}
case XPT_RESET_BUS:
{
xpt_done(ccb);
break;
}
case XPT_GET_TRAN_SETTINGS:
{
ccb->cts.protocol = PROTO_SCSI;
ccb->cts.protocol_version = SCSI_REV_2;
ccb->cts.transport = XPORT_SPI;
ccb->cts.transport_version = 2;
ccb->cts.xport_specific.spi.valid = CTS_SPI_VALID_DISC;
ccb->cts.xport_specific.spi.flags = CTS_SPI_FLAGS_DISC_ENB;
ccb->cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
ccb->cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_SET_TRAN_SETTINGS:
{
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
cam_calc_geometry(&ccb->ccg, 1);
xpt_done(ccb);
break;
}
case XPT_PATH_INQ:
{
ccb->cpi.version_num = 1;
ccb->cpi.hba_inquiry = 0;
ccb->cpi.target_sprt = 0;
ccb->cpi.hba_misc = 0;
ccb->cpi.hba_eng_cnt = 0;
ccb->cpi.max_lun = MRSAS_SCSI_MAX_LUNS;
ccb->cpi.unit_number = cam_sim_unit(sim);
ccb->cpi.bus_id = cam_sim_bus(sim);
ccb->cpi.initiator_id = MRSAS_SCSI_INITIATOR_ID;
ccb->cpi.base_transfer_speed = 150000;
strncpy(ccb->cpi.sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(ccb->cpi.hba_vid, "LSI", HBA_IDLEN);
strncpy(ccb->cpi.dev_name, cam_sim_name(sim), DEV_IDLEN);
ccb->cpi.transport = XPORT_SPI;
ccb->cpi.transport_version = 2;
ccb->cpi.protocol = PROTO_SCSI;
ccb->cpi.protocol_version = SCSI_REV_2;
if (ccb->cpi.bus_id == 0)
ccb->cpi.max_target = MRSAS_MAX_LD-1;
else
ccb->cpi.max_target = MRSAS_MAX_PD-1;
#if (__FreeBSD_version > 704000)
ccb->cpi.maxio = MRSAS_MAX_IO_SIZE;
#endif
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
{
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
}
/**
* mrsas_scsiio_timeout Callback function for IO timed out
* input: mpt command context
*
* This function will execute after timeout value
* provided by ccb header from CAM layer, if timer expires.
* Driver will run timer for all DCDM and LDIO comming from CAM layer.
* This function is callback function for IO timeout and it runs in
* no-sleep context. Set do_timedout_reset in Adapter context so that
* it will execute OCR/Kill adpter from ocr_thread context.
*/
static void
mrsas_scsiio_timeout(void *data)
{
struct mrsas_mpt_cmd *cmd;
struct mrsas_softc *sc;
cmd = (struct mrsas_mpt_cmd *)data;
sc = cmd->sc;
if (cmd->ccb_ptr == NULL) {
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 on OCR enable/disable
* property of Controller from ocr_thread context.
*/
callout_reset(&cmd->cm_callout, (600000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
sc->do_timedout_reset = 1;
if(sc->ocr_thread_active)
wakeup(&sc->ocr_chan);
}
/**
* mrsas_startio: SCSI IO entry point
* input: Adapter instance soft state
* pointer to CAM Control Block
*
* This function is the SCSI IO entry point and it initiates IO processing.
* It copies the IO and depending if the IO is read/write or inquiry, it would
* call mrsas_build_ldio() or mrsas_build_dcdb(), respectively. It returns
* 0 if the command is sent to firmware successfully, otherwise it returns 1.
*/
static int32_t mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim,
union ccb *ccb)
{
struct mrsas_mpt_cmd *cmd;
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
if ((csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE){
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return(0);
}
ccb_h->status |= CAM_SIM_QUEUED;
cmd = mrsas_get_mpt_cmd(sc);
if (!cmd) {
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
return(0);
}
if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if(ccb_h->flags & CAM_DIR_IN)
cmd->flags |= MRSAS_DIR_IN;
if(ccb_h->flags & CAM_DIR_OUT)
cmd->flags |= MRSAS_DIR_OUT;
}
else
cmd->flags = MRSAS_DIR_NONE; /* no data */
/* For FreeBSD 10.0 and higher */
#if (__FreeBSD_version >= 1000000)
/*
* * XXX We don't yet support physical addresses here.
*/
switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) {
case CAM_DATA_PADDR:
case CAM_DATA_SG_PADDR:
printf("%s: physical addresses not supported\n",
__func__);
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_INVALID;
ccb_h->status &= ~CAM_SIM_QUEUED;
goto done;
case CAM_DATA_SG:
printf("%s: scatter gather is not supported\n",
__func__);
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_INVALID;
goto done;
case CAM_DATA_VADDR:
if (csio->dxfer_len > MRSAS_MAX_IO_SIZE) {
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_TOO_BIG;
goto done;
}
cmd->length = csio->dxfer_len;
if (cmd->length)
cmd->data = csio->data_ptr;
break;
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
goto done;
}
#else
if (!(ccb_h->flags & CAM_DATA_PHYS)) { //Virtual data address
if (!(ccb_h->flags & CAM_SCATTER_VALID)) {
if (csio->dxfer_len > MRSAS_MAX_IO_SIZE) {
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_TOO_BIG;
goto done;
}
cmd->length = csio->dxfer_len;
if (cmd->length)
cmd->data = csio->data_ptr;
}
else {
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_INVALID;
goto done;
}
}
else { //Data addresses are physical.
mrsas_release_mpt_cmd(cmd);
ccb_h->status = CAM_REQ_INVALID;
ccb_h->status &= ~CAM_SIM_QUEUED;
goto done;
}
#endif
/* save ccb ptr */
cmd->ccb_ptr = ccb;
req_desc = mrsas_get_request_desc(sc, (cmd->index)-1);
if (!req_desc) {
device_printf(sc->mrsas_dev, "Cannot get request_descriptor.\n");
return (FAIL);
}
memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION));
cmd->request_desc = req_desc;
if (ccb_h->flags & CAM_CDB_POINTER)
bcopy(csio->cdb_io.cdb_ptr, cmd->io_request->CDB.CDB32, csio->cdb_len);
else
bcopy(csio->cdb_io.cdb_bytes, cmd->io_request->CDB.CDB32, csio->cdb_len);
mtx_lock(&sc->raidmap_lock);
if (mrsas_ldio_inq(sim, ccb)) {
if (mrsas_build_ldio(sc, cmd, ccb)){
device_printf(sc->mrsas_dev, "Build LDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
return(1);
}
}
else {
if (mrsas_build_dcdb(sc, cmd, ccb, sim)) {
device_printf(sc->mrsas_dev, "Build DCDB failed.\n");
mtx_unlock(&sc->raidmap_lock);
return(1);
}
}
mtx_unlock(&sc->raidmap_lock);
if (cmd->flags == MRSAS_DIR_IN) //from device
cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
else if (cmd->flags == MRSAS_DIR_OUT) //to device
cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
cmd->io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
cmd->io_request->SGLOffset0 = offsetof(MRSAS_RAID_SCSI_IO_REQUEST, SGL)/4;
cmd->io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
cmd->io_request->SenseBufferLength = MRSAS_SCSI_SENSE_BUFFERSIZE;
req_desc = cmd->request_desc;
req_desc->SCSIIO.SMID = cmd->index;
/*
* Start timer for IO timeout. Default timeout value is 90 second.
*/
callout_reset(&cmd->cm_callout, (sc->mrsas_io_timeout * hz) / 1000,
mrsas_scsiio_timeout, cmd);
atomic_inc(&sc->fw_outstanding);
if(atomic_read(&sc->fw_outstanding) > sc->io_cmds_highwater)
sc->io_cmds_highwater++;
mrsas_fire_cmd(sc, req_desc->addr.u.low, req_desc->addr.u.high);
return(0);
done:
xpt_done(ccb);
return(0);
}
/**
* mrsas_ldio_inq: Determines if IO is read/write or inquiry
* input: pointer to CAM Control Block
*
* This function determines if the IO is read/write or inquiry. It returns a
* 1 if the IO is read/write and 0 if it is inquiry.
*/
int mrsas_ldio_inq(struct cam_sim *sim, union ccb *ccb)
{
struct ccb_scsiio *csio = &(ccb->csio);
if (cam_sim_bus(sim) == 1)
return(0);
switch (csio->cdb_io.cdb_bytes[0]) {
case READ_10:
case WRITE_10:
case READ_12:
case WRITE_12:
case READ_6:
case WRITE_6:
case READ_16:
case WRITE_16:
return 1;
default:
return 0;
}
}
/**
* mrsas_get_mpt_cmd: Get a cmd from free command pool
* input: Adapter instance soft state
*
* This function removes an MPT command from the command free list and
* initializes it.
*/
struct mrsas_mpt_cmd* mrsas_get_mpt_cmd(struct mrsas_softc *sc)
{
struct mrsas_mpt_cmd *cmd = NULL;
mtx_lock(&sc->mpt_cmd_pool_lock);
if (!TAILQ_EMPTY(&sc->mrsas_mpt_cmd_list_head)){
cmd = TAILQ_FIRST(&sc->mrsas_mpt_cmd_list_head);
TAILQ_REMOVE(&sc->mrsas_mpt_cmd_list_head, cmd, next);
}
memset((uint8_t *)cmd->io_request, 0, MRSAS_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
cmd->data = NULL;
cmd->length = 0;
cmd->flags = 0;
cmd->error_code = 0;
cmd->load_balance = 0;
cmd->ccb_ptr = NULL;
mtx_unlock(&sc->mpt_cmd_pool_lock);
return cmd;
}
/**
* mrsas_release_mpt_cmd: Return a cmd to free command pool
* input: Command packet for return to free command pool
*
* This function returns an MPT command to the free command list.
*/
void mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd)
{
struct mrsas_softc *sc = cmd->sc;
mtx_lock(&sc->mpt_cmd_pool_lock);
cmd->sync_cmd_idx = (u_int32_t)MRSAS_ULONG_MAX;
TAILQ_INSERT_TAIL(&(sc->mrsas_mpt_cmd_list_head), cmd, next);
mtx_unlock(&sc->mpt_cmd_pool_lock);
return;
}
/**
* mrsas_get_request_desc: Get request descriptor from array
* input: Adapter instance soft state
* SMID index
*
* This function returns a pointer to the request descriptor.
*/
MRSAS_REQUEST_DESCRIPTOR_UNION *
mrsas_get_request_desc(struct mrsas_softc *sc, u_int16_t index)
{
u_int8_t *p;
if (index >= sc->max_fw_cmds) {
device_printf(sc->mrsas_dev, "Invalid SMID (0x%x)request for desc\n", index);
return NULL;
}
p = sc->req_desc + sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION) * index;
return (MRSAS_REQUEST_DESCRIPTOR_UNION *)p;
}
/**
* mrsas_build_ldio: Builds an LDIO command
* input: Adapter instance soft state
* Pointer to command packet
* Pointer to CCB
*
* This function builds the LDIO command packet. It returns 0 if the
* command is built successfully, otherwise it returns a 1.
*/
int mrsas_build_ldio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
u_int32_t device_id;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
device_id = ccb_h->target_id;
io_request = cmd->io_request;
io_request->RaidContext.VirtualDiskTgtId = device_id;
io_request->RaidContext.status = 0;
io_request->RaidContext.exStatus = 0;
/* just the cdb len, other flags zero, and ORed-in later for FP */
io_request->IoFlags = csio->cdb_len;
if (mrsas_setup_io(sc, cmd, ccb, device_id, io_request) != SUCCESS)
device_printf(sc->mrsas_dev, "Build ldio or fpio error\n");
io_request->DataLength = cmd->length;
if (mrsas_map_request(sc, cmd) == SUCCESS) {
if (cmd->sge_count > MRSAS_MAX_SGL) {
device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds"
"max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge);
return (FAIL);
}
io_request->RaidContext.numSGE = cmd->sge_count;
}
else {
device_printf(sc->mrsas_dev, "Data map/load failed.\n");
return(FAIL);
}
return(0);
}
/**
* mrsas_setup_io: Set up data including Fast Path I/O
* input: Adapter instance soft state
* Pointer to command packet
* Pointer to CCB
*
* This function builds the DCDB inquiry command. It returns 0 if the
* command is built successfully, otherwise it returns a 1.
*/
int mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, u_int32_t device_id,
MRSAS_RAID_SCSI_IO_REQUEST *io_request)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
struct IO_REQUEST_INFO io_info;
MR_FW_RAID_MAP_ALL *map_ptr;
u_int8_t fp_possible;
u_int32_t start_lba_hi, start_lba_lo, ld_block_size;
u_int32_t datalength = 0;
start_lba_lo = 0;
start_lba_hi = 0;
fp_possible = 0;
/*
* READ_6 (0x08) or WRITE_6 (0x0A) cdb
*/
if (csio->cdb_len == 6) {
datalength = (u_int32_t)csio->cdb_io.cdb_bytes[4];
start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[1] << 16) |
((u_int32_t) csio->cdb_io.cdb_bytes[2] << 8) |
(u_int32_t) csio->cdb_io.cdb_bytes[3];
start_lba_lo &= 0x1FFFFF;
}
/*
* READ_10 (0x28) or WRITE_6 (0x2A) cdb
*/
else if (csio->cdb_len == 10) {
datalength = (u_int32_t)csio->cdb_io.cdb_bytes[8] |
((u_int32_t)csio->cdb_io.cdb_bytes[7] << 8);
start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) |
((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) |
(u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 |
((u_int32_t) csio->cdb_io.cdb_bytes[5]);
}
/*
* READ_12 (0xA8) or WRITE_12 (0xAA) cdb
*/
else if (csio->cdb_len == 12) {
datalength = (u_int32_t)csio->cdb_io.cdb_bytes[6] << 24 |
((u_int32_t)csio->cdb_io.cdb_bytes[7] << 16) |
((u_int32_t)csio->cdb_io.cdb_bytes[8] << 8) |
((u_int32_t)csio->cdb_io.cdb_bytes[9]);
start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) |
((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) |
(u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 |
((u_int32_t) csio->cdb_io.cdb_bytes[5]);
}
/*
* READ_16 (0x88) or WRITE_16 (0xx8A) cdb
*/
else if (csio->cdb_len == 16) {
datalength = (u_int32_t)csio->cdb_io.cdb_bytes[10] << 24 |
((u_int32_t)csio->cdb_io.cdb_bytes[11] << 16) |
((u_int32_t)csio->cdb_io.cdb_bytes[12] << 8) |
((u_int32_t)csio->cdb_io.cdb_bytes[13]);
start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[6] << 24) |
((u_int32_t) csio->cdb_io.cdb_bytes[7] << 16) |
(u_int32_t) csio->cdb_io.cdb_bytes[8] << 8 |
((u_int32_t) csio->cdb_io.cdb_bytes[9]);
start_lba_hi = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) |
((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) |
(u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 |
((u_int32_t) csio->cdb_io.cdb_bytes[5]);
}
memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
io_info.ldStartBlock = ((u_int64_t)start_lba_hi << 32) | start_lba_lo;
io_info.numBlocks = datalength;
io_info.ldTgtId = device_id;
switch (ccb_h->flags & CAM_DIR_MASK) {
case CAM_DIR_IN:
io_info.isRead = 1;
break;
case CAM_DIR_OUT:
io_info.isRead = 0;
break;
case CAM_DIR_NONE:
default:
mrsas_dprint(sc, MRSAS_TRACE, "From %s : DMA Flag is %d \n", __func__, ccb_h->flags & CAM_DIR_MASK);
break;
}
map_ptr = sc->raidmap_mem[(sc->map_id & 1)];
ld_block_size = MR_LdBlockSizeGet(device_id, map_ptr, sc);
if ((MR_TargetIdToLdGet(device_id, map_ptr) >= MAX_LOGICAL_DRIVES) ||
(!sc->fast_path_io)) {
io_request->RaidContext.regLockFlags = 0;
fp_possible = 0;
}
else
{
if (MR_BuildRaidContext(sc, &io_info, &io_request->RaidContext, map_ptr))
fp_possible = io_info.fpOkForIo;
}
if (fp_possible) {
mrsas_set_pd_lba(io_request, csio->cdb_len, &io_info, ccb, map_ptr,
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
<< MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) {
if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED)
cmd->request_desc->SCSIIO.RequestFlags = (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
io_request->RaidContext.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.nseg = 0x1;
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | MR_RL_FLAGS_SEQ_NUM_ENABLE);
}
if ((sc->load_balance_info[device_id].loadBalanceFlag) && (io_info.isRead)) {
io_info.devHandle = mrsas_get_updated_dev_handle(&sc->load_balance_info[device_id],
&io_info);
cmd->load_balance = MRSAS_LOAD_BALANCE_FLAG;
}
else
cmd->load_balance = 0;
cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
io_request->DevHandle = io_info.devHandle;
}
else {
/* Not FP IO */
io_request->RaidContext.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec;
cmd->request_desc->SCSIIO.RequestFlags =
(MRSAS_REQ_DESCRIPT_FLAGS_LD_IO << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) {
if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED)
cmd->request_desc->SCSIIO.RequestFlags = (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
io_request->RaidContext.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | MR_RL_FLAGS_SEQ_NUM_ENABLE);
io_request->RaidContext.nseg = 0x1;
}
io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = device_id;
}
return(0);
}
/**
* mrsas_build_dcdb: Builds an DCDB command
* input: Adapter instance soft state
* Pointer to command packet
* Pointer to CCB
*
* This function builds the DCDB inquiry command. It returns 0 if the
* command is built successfully, otherwise it returns a 1.
*/
int mrsas_build_dcdb(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, struct cam_sim *sim)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
u_int32_t device_id;
MR_FW_RAID_MAP_ALL *map_ptr;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
io_request = cmd->io_request;
device_id = ccb_h->target_id;
map_ptr = sc->raidmap_mem[(sc->map_id & 1)];
/* Check if this is for system PD */
if (cam_sim_bus(sim) == 1 &&
sc->pd_list[device_id].driveState == MR_PD_STATE_SYSTEM) {
io_request->Function = 0;
io_request->DevHandle = map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
io_request->RaidContext.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec;
io_request->RaidContext.regLockFlags = 0;
io_request->RaidContext.regLockRowLBA = 0;
io_request->RaidContext.regLockLength = 0;
io_request->RaidContext.RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY))
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
cmd->request_desc->SCSIIO.DevHandle =
map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
}
else {
io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = device_id;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
}
io_request->RaidContext.VirtualDiskTgtId = device_id;
io_request->LUN[1] = ccb_h->target_lun & 0xF;
io_request->DataLength = cmd->length;
if (mrsas_map_request(sc, cmd) == SUCCESS) {
if (cmd->sge_count > sc->max_num_sge) {
device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds"
"max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge);
return (1);
}
io_request->RaidContext.numSGE = cmd->sge_count;
}
else {
device_printf(sc->mrsas_dev, "Data map/load failed.\n");
return(1);
}
return(0);
}
/**
* mrsas_map_request: Map and load data
* input: Adapter instance soft state
* Pointer to command packet
*
* For data from OS, map and load the data buffer into bus space. The
* SG list is built in the callback. If the bus dmamap load is not
* successful, cmd->error_code will contain the error code and a 1 is
* returned.
*/
int mrsas_map_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
{
u_int32_t retcode = 0;
struct cam_sim *sim;
int flag = BUS_DMA_NOWAIT;
sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path);
if (cmd->data != NULL) {
mtx_lock(&sc->io_lock);
/* Map data buffer into bus space */
retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data,
cmd->length, mrsas_data_load_cb, cmd, flag);
mtx_unlock(&sc->io_lock);
if (retcode)
device_printf(sc->mrsas_dev, "bus_dmamap_load(): retcode = %d\n", retcode);
if (retcode == EINPROGRESS) {
device_printf(sc->mrsas_dev, "request load in progress\n");
mrsas_freeze_simq(cmd, sim);
}
}
if (cmd->error_code)
return(1);
return(retcode);
}
/**
* mrsas_unmap_request: Unmap and unload data
* input: Adapter instance soft state
* Pointer to command packet
*
* This function unmaps and unloads data from OS.
*/
void mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
{
if (cmd->data != NULL) {
if (cmd->flags & MRSAS_DIR_IN)
bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTREAD);
if (cmd->flags & MRSAS_DIR_OUT)
bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTWRITE);
mtx_lock(&sc->io_lock);
bus_dmamap_unload(sc->data_tag, cmd->data_dmamap);
mtx_unlock(&sc->io_lock);
}
}
/**
* mrsas_data_load_cb: Callback entry point
* input: Pointer to command packet as argument
* Pointer to segment
* Number of segments
* Error
*
* This is the callback function of the bus dma map load. It builds
* the SG list.
*/
static void
mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct mrsas_mpt_cmd *cmd = (struct mrsas_mpt_cmd *)arg;
struct mrsas_softc *sc = cmd->sc;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
pMpi25IeeeSgeChain64_t sgl_ptr;
int i=0, sg_processed=0;
if (error)
{
cmd->error_code = error;
device_printf(sc->mrsas_dev, "mrsas_data_load_cb: error=%d\n", error);
if (error == EFBIG) {
cmd->ccb_ptr->ccb_h.status = CAM_REQ_TOO_BIG;
return;
}
}
if (cmd->flags & MRSAS_DIR_IN)
bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap,
BUS_DMASYNC_PREREAD);
if (cmd->flags & MRSAS_DIR_OUT)
bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap,
BUS_DMASYNC_PREWRITE);
if (nseg > sc->max_num_sge) {
device_printf(sc->mrsas_dev, "SGE count is too large or 0.\n");
return;
}
io_request = cmd->io_request;
sgl_ptr = (pMpi25IeeeSgeChain64_t)&io_request->SGL;
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) {
pMpi25IeeeSgeChain64_t sgl_ptr_end = sgl_ptr;
sgl_ptr_end += sc->max_sge_in_main_msg - 1;
sgl_ptr_end->Flags = 0;
}
if (nseg != 0) {
for (i=0; i < nseg; i++) {
sgl_ptr->Address = segs[i].ds_addr;
sgl_ptr->Length = segs[i].ds_len;
sgl_ptr->Flags = 0;
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) {
if (i == nseg - 1)
sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
}
sgl_ptr++;
sg_processed = i + 1;
/*
* Prepare chain element
*/
if ((sg_processed == (sc->max_sge_in_main_msg - 1)) &&
(nseg > sc->max_sge_in_main_msg)) {
pMpi25IeeeSgeChain64_t sg_chain;
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) {
if ((cmd->io_request->IoFlags & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
!= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
cmd->io_request->ChainOffset = sc->chain_offset_io_request;
else
cmd->io_request->ChainOffset = 0;
} else
cmd->io_request->ChainOffset = sc->chain_offset_io_request;
sg_chain = sgl_ptr;
if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY))
sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
else
sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
sg_chain->Length = (sizeof(MPI2_SGE_IO_UNION) * (nseg - sg_processed));
sg_chain->Address = cmd->chain_frame_phys_addr;
sgl_ptr = (pMpi25IeeeSgeChain64_t)cmd->chain_frame;
}
}
}
cmd->sge_count = nseg;
}
/**
* mrsas_freeze_simq: Freeze SIM queue
* input: Pointer to command packet
* Pointer to SIM
*
* This function freezes the sim queue.
*/
static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim)
{
union ccb *ccb = (union ccb *)(cmd->ccb_ptr);
xpt_freeze_simq(sim, 1);
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
}
void mrsas_xpt_freeze(struct mrsas_softc *sc) {
xpt_freeze_simq(sc->sim_0, 1);
xpt_freeze_simq(sc->sim_1, 1);
}
void mrsas_xpt_release(struct mrsas_softc *sc) {
xpt_release_simq(sc->sim_0, 1);
xpt_release_simq(sc->sim_1, 1);
}
/**
* mrsas_cmd_done: Perform remaining command completion
* input: Adapter instance soft state
* Pointer to command packet
*
* This function calls ummap request and releases the MPT command.
*/
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);
xpt_done(cmd->ccb_ptr);
cmd->ccb_ptr = NULL;
mtx_unlock(&sc->sim_lock);
mrsas_release_mpt_cmd(cmd);
}
/**
* mrsas_poll: Polling entry point
* input: Pointer to SIM
*
* This is currently a stub function.
*/
static void mrsas_poll(struct cam_sim *sim)
{
struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim);
mrsas_isr((void *) sc);
}
/*
* mrsas_bus_scan: Perform bus scan
* input: Adapter instance soft state
*
* This mrsas_bus_scan function is needed for FreeBSD 7.x. Also, it should
* not be called in FreeBSD 8.x and later versions, where the bus scan is
* automatic.
*/
int mrsas_bus_scan(struct mrsas_softc *sc)
{
union ccb *ccb_0;
union ccb *ccb_1;
if ((ccb_0 = xpt_alloc_ccb()) == NULL) {
return(ENOMEM);
}
if ((ccb_1 = xpt_alloc_ccb()) == NULL) {
xpt_free_ccb(ccb_0);
return(ENOMEM);
}
mtx_lock(&sc->sim_lock);
if (xpt_create_path(&ccb_0->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_0),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){
xpt_free_ccb(ccb_0);
xpt_free_ccb(ccb_1);
mtx_unlock(&sc->sim_lock);
return(EIO);
}
if (xpt_create_path(&ccb_1->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_1),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){
xpt_free_ccb(ccb_0);
xpt_free_ccb(ccb_1);
mtx_unlock(&sc->sim_lock);
return(EIO);
}
mtx_unlock(&sc->sim_lock);
xpt_rescan(ccb_0);
xpt_rescan(ccb_1);
return(0);
}
/*
* mrsas_bus_scan_sim: Perform bus scan per SIM
* input: Adapter instance soft state
* This function will be called from Event handler
* on LD creation/deletion, JBOD on/off.
*/
int mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim)
{
union ccb *ccb;
if ((ccb = xpt_alloc_ccb()) == NULL) {
return(ENOMEM);
}
mtx_lock(&sc->sim_lock);
if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){
xpt_free_ccb(ccb);
mtx_unlock(&sc->sim_lock);
return(EIO);
}
mtx_unlock(&sc->sim_lock);
xpt_rescan(ccb);
return(0);
}
Reference in New Issue View Git Blame Copy Permalink