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freebsd-dev/sys/dev/mrsas/mrsas_cam.c
Doug Ambrisko 665484d8f0 Add mrsas(4) driver from LSI official support of newer MegaRAID SAS 
cards.  LSI has been maintaining this driver outside of the FreeBSD
tree.  It overlaps support of ThunderBolt and Invader cards that mfi(4)
supports.  By default mfi(4) will attach to cards.  If the tunable:
	hw.mfi.mrsas_enable=1
is set then mfi(4) will not probe and attach to these newer cards and
allow mrsas(4) to attach.  So by default this driver will not effect
a FreeBSD system unless mfi(4) is removed from the kernel or the
tunable is enabled.

mrsas(4) attaches disks to the CAM layer so it depends on CAM and devices
show up as /dev/daX.  mfiutil(8) does not work with mrsas.  The FreeBSD
version of MegaCli and StorCli from LSI do work with mrsas.  It appears
that StorCli only works with mrsas.  MegaCli appears to work with mfi(4)
and mrsas(4).

It would be good to add mfiutil(4) support to mrsas, emulations modes,
kernel logging, device aliases to ease the transition between mfi(4)
and mrsas(4).

Style issues should be resolved by LSI when they get committers approved.
The plan is get this driver in FreeBSD 9.3 to improve HW support.

Thanks to LSI for developing, testing and working with FreeBSD to
make this driver co-exist in FreeBSD.  This improves the overall
support of MegaRAID SAS.

Submitted by:	Kashyap Desai <Kashyap.Desai@lsi.com>
Reviewed by:	scottl
MFC after:	3 days
Sponsored by:	LSI
2014-05-07 16:16:49 +00:00

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/*
* 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;
mtx_lock(&sc->sim_lock);
if ((ccb_0 = xpt_alloc_ccb()) == NULL) {
mtx_unlock(&sc->sim_lock);
return(ENOMEM);
}
if ((ccb_1 = xpt_alloc_ccb()) == NULL) {
xpt_free_ccb(ccb_0);
mtx_unlock(&sc->sim_lock);
return(ENOMEM);
}
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);
}
xpt_rescan(ccb_0);
xpt_rescan(ccb_1);
mtx_unlock(&sc->sim_lock);
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;
mtx_lock(&sc->sim_lock);
if ((ccb = xpt_alloc_ccb()) == NULL) {
mtx_unlock(&sc->sim_lock);
return(ENOMEM);
}
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);
}
xpt_rescan(ccb);
mtx_unlock(&sc->sim_lock);
return(0);
}
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