/**
* 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 0 /* XXX (__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:
kprintf("%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:
kprintf("%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);
lockmgr(&sc->raidmap_lock, LK_EXCLUSIVE);
if (mrsas_ldio_inq(sim, ccb)) {
if (mrsas_build_ldio(sc, cmd, ccb)){
device_printf(sc->mrsas_dev, "Build LDIO failed.\n");
lockmgr(&sc->raidmap_lock, LK_RELEASE);
return(1);
}
}
else {
if (mrsas_build_dcdb(sc, cmd, ccb, sim)) {
device_printf(sc->mrsas_dev, "Build DCDB failed.\n");
lockmgr(&sc->raidmap_lock, LK_RELEASE);
return(1);
}
}
lockmgr(&sc->raidmap_lock, LK_RELEASE);
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_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;
u_int8_t cmd_type;
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 9.2 and higher */
#if (__FreeBSD_version >= 902001)
/*
* 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:
device_printf(sc->mrsas_dev, "%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:
device_printf(sc->mrsas_dev, "%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 > (sc->max_num_sge * MRSAS_PAGE_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;
case CAM_DATA_BIO:
if (csio->dxfer_len > (sc->max_num_sge * MRSAS_PAGE_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 > (sc->max_num_sge * MRSAS_PAGE_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);
/* Check for IO type READ-WRITE targeted for Logical Volume */
cmd_type = mrsas_find_io_type(sim, ccb);
switch (cmd_type) {
case READ_WRITE_LDIO:
/* Build READ-WRITE IO for Logical Volume */
if (mrsas_build_ldio_rw(sc, cmd, ccb)) {
device_printf(sc->mrsas_dev, "Build RW LDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
return (1);
}
break;
case NON_READ_WRITE_LDIO:
/* Build NON READ-WRITE IO for Logical Volume */
if (mrsas_build_ldio_nonrw(sc, cmd, ccb)) {
device_printf(sc->mrsas_dev, "Build NON-RW LDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
return (1);
}
break;
case READ_WRITE_SYSPDIO:
case NON_READ_WRITE_SYSPDIO:
if (sc->secure_jbod_support &&
(cmd_type == NON_READ_WRITE_SYSPDIO)) {
/* Build NON-RW IO for JBOD */
if (mrsas_build_syspdio(sc, cmd, ccb, sim, 0)) {
device_printf(sc->mrsas_dev,
"Build SYSPDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
return (1);
}
} else {
/* Build RW IO for JBOD */
if (mrsas_build_syspdio(sc, cmd, ccb, sim, 1)) {
device_printf(sc->mrsas_dev,
"Build SYSPDIO 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.
*/
#if (__FreeBSD_version >= 1000510)
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 600, 0,
mrsas_scsiio_timeout, cmd, 0);
#else
callout_reset(&cmd->cm_callout, (600000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
#endif
mrsas_atomic_inc(&sc->fw_outstanding);
if (mrsas_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);
}
