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head/sys/dev/smartpqi/smartpqi_cam.c

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/*-
* Copyright (c) 2018 Microsemi Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $FreeBSD$ */
/*
* CAM interface for smartpqi driver
*/
#include "smartpqi_includes.h"
/*
* Set cam sim properties of the smartpqi adapter.
*/
static void update_sim_properties(struct cam_sim *sim, struct ccb_pathinq *cpi)
{
pqisrc_softstate_t *softs = (struct pqisrc_softstate *)
cam_sim_softc(sim);
DBG_FUNC("IN\n");
cpi->version_num = 1;
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_NOBUSRESET | PIM_UNMAPPED;
cpi->hba_eng_cnt = 0;
cpi->max_lun = PQI_MAX_MULTILUN;
cpi->max_target = 1088;
cpi->maxio = (softs->pqi_cap.max_sg_elem - 1) * PAGE_SIZE;
cpi->initiator_id = 255;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Microsemi", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->bus_id = cam_sim_bus(sim);
cpi->base_transfer_speed = 1200000; /* Base bus speed in KB/sec */
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_SPC4;
cpi->transport = XPORT_SPI;
cpi->transport_version = 2;
cpi->ccb_h.status = CAM_REQ_CMP;
DBG_FUNC("OUT\n");
}
/*
* Get transport settings of the smartpqi adapter
*/
static void get_transport_settings(struct pqisrc_softstate *softs,
struct ccb_trans_settings *cts)
{
struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
struct ccb_trans_settings_sas *sas = &cts->xport_specific.sas;
struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
DBG_FUNC("IN\n");
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_SPC4;
cts->transport = XPORT_SPI;
cts->transport_version = 2;
spi->valid = CTS_SPI_VALID_DISC;
spi->flags = CTS_SPI_FLAGS_DISC_ENB;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
sas->valid = CTS_SAS_VALID_SPEED;
cts->ccb_h.status = CAM_REQ_CMP;
DBG_FUNC("OUT\n");
}
/*
* Add the target to CAM layer and rescan, when a new device is found
*/
void os_add_device(pqisrc_softstate_t *softs, pqi_scsi_dev_t *device) {
union ccb *ccb;
DBG_FUNC("IN\n");
if(softs->os_specific.sim_registered) {
if ((ccb = xpt_alloc_ccb_nowait()) == NULL) {
DBG_ERR("rescan failed (can't allocate CCB)\n");
return;
}
if (xpt_create_path(&ccb->ccb_h.path, NULL,
cam_sim_path(softs->os_specific.sim),
device->target, device->lun) != CAM_REQ_CMP) {
DBG_ERR("rescan failed (can't create path)\n");
xpt_free_ccb(ccb);
return;
}
xpt_rescan(ccb);
}
DBG_FUNC("OUT\n");
}
/*
* Remove the device from CAM layer when deleted or hot removed
*/
void os_remove_device(pqisrc_softstate_t *softs,
pqi_scsi_dev_t *device) {
struct cam_path *tmppath;
DBG_FUNC("IN\n");
if(softs->os_specific.sim_registered) {
if (xpt_create_path(&tmppath, NULL,
cam_sim_path(softs->os_specific.sim),
device->target, device->lun) != CAM_REQ_CMP) {
DBG_ERR("unable to create path for async event");
return;
}
xpt_async(AC_LOST_DEVICE, tmppath, NULL);
xpt_free_path(tmppath);
pqisrc_free_device(softs, device);
OS_SLEEP(10000);
}
DBG_FUNC("OUT\n");
}
/*
* Function to release the frozen simq
*/
static void pqi_release_camq( rcb_t *rcb )
{
pqisrc_softstate_t *softs;
struct ccb_scsiio *csio;
csio = (struct ccb_scsiio *)&rcb->cm_ccb->csio;
softs = rcb->softs;
DBG_FUNC("IN\n");
if (softs->os_specific.pqi_flags & PQI_FLAG_BUSY) {
softs->os_specific.pqi_flags &= ~PQI_FLAG_BUSY;
if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
else
csio->ccb_h.status |= CAM_RELEASE_SIMQ;
}
DBG_FUNC("OUT\n");
}
/*
* Function to dma-unmap the completed request
*/
static void pqi_unmap_request(void *arg)
{
pqisrc_softstate_t *softs;
rcb_t *rcb;
DBG_IO("IN rcb = %p\n", arg);
rcb = (rcb_t *)arg;
softs = rcb->softs;
if (!(rcb->cm_flags & PQI_CMD_MAPPED))
return;
if (rcb->bcount != 0 ) {
if (rcb->data_dir == SOP_DATA_DIR_FROM_DEVICE)
bus_dmamap_sync(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap,
BUS_DMASYNC_POSTREAD);
if (rcb->data_dir == SOP_DATA_DIR_TO_DEVICE)
bus_dmamap_sync(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap);
}
rcb->cm_flags &= ~PQI_CMD_MAPPED;
if(rcb->sgt && rcb->nseg)
os_mem_free(rcb->softs, (void*)rcb->sgt,
rcb->nseg*sizeof(sgt_t));
pqisrc_put_tag(&softs->taglist, rcb->tag);
DBG_IO("OUT\n");
}
/*
* Construct meaningful LD name for volume here.
*/
static void
smartpqi_fix_ld_inquiry(pqisrc_softstate_t *softs, struct ccb_scsiio *csio)
{
struct scsi_inquiry_data *inq = NULL;
uint8_t *cdb = NULL;
pqi_scsi_dev_t *device = NULL;
DBG_FUNC("IN\n");
cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
(uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes;
if(cdb[0] == INQUIRY &&
(cdb[1] & SI_EVPD) == 0 &&
(csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
csio->dxfer_len >= SHORT_INQUIRY_LENGTH) {
inq = (struct scsi_inquiry_data *)csio->data_ptr;
device = softs->device_list[csio->ccb_h.target_id][csio->ccb_h.target_lun];
/* Let the disks be probed and dealt with via CAM. Only for LD
let it fall through and inquiry be tweaked */
if( !device || !pqisrc_is_logical_device(device) ||
(device->devtype != DISK_DEVICE) ||
pqisrc_is_external_raid_device(device)) {
return;
}
strncpy(inq->vendor, "MSCC",
SID_VENDOR_SIZE);
strncpy(inq->product,
pqisrc_raidlevel_to_string(device->raid_level),
SID_PRODUCT_SIZE);
strncpy(inq->revision, device->volume_offline?"OFF":"OK",
SID_REVISION_SIZE);
}
DBG_FUNC("OUT\n");
}
/*
* Handle completion of a command - pass results back through the CCB
*/
void
os_io_response_success(rcb_t *rcb)
{
struct ccb_scsiio *csio;
DBG_IO("IN rcb = %p\n", rcb);
if (rcb == NULL)
panic("rcb is null");
csio = (struct ccb_scsiio *)&rcb->cm_ccb->csio;
if (csio == NULL)
panic("csio is null");
rcb->status = REQUEST_SUCCESS;
csio->ccb_h.status = CAM_REQ_CMP;
smartpqi_fix_ld_inquiry(rcb->softs, csio);
pqi_release_camq(rcb);
pqi_unmap_request(rcb);
xpt_done((union ccb *)csio);
DBG_IO("OUT\n");
}
/*
* Error response handling for raid IO
*/
void os_raid_response_error(rcb_t *rcb, raid_path_error_info_elem_t *err_info)
{
struct ccb_scsiio *csio;
pqisrc_softstate_t *softs;
DBG_IO("IN\n");
csio = (struct ccb_scsiio *)&rcb->cm_ccb->csio;
if (csio == NULL)
panic("csio is null");
softs = rcb->softs;
ASSERT(err_info != NULL);
csio->scsi_status = err_info->status;
csio->ccb_h.status = CAM_REQ_CMP_ERR;
if (csio->ccb_h.func_code == XPT_SCSI_IO) {
/*
* Handle specific SCSI status values.
*/
switch(csio->scsi_status) {
case PQI_RAID_STATUS_QUEUE_FULL:
csio->ccb_h.status = CAM_REQ_CMP;
DBG_ERR("Queue Full error");
break;
/* check condition, sense data included */
case PQI_RAID_STATUS_CHECK_CONDITION:
{
uint16_t sense_data_len =
LE_16(err_info->sense_data_len);
uint8_t *sense_data = NULL;
if (sense_data_len)
sense_data = err_info->data;
memset(&csio->sense_data, 0, csio->sense_len);
sense_data_len = (sense_data_len >
csio->sense_len) ?
csio->sense_len :
sense_data_len;
if (sense_data)
memcpy(&csio->sense_data, sense_data,
sense_data_len);
if (csio->sense_len > sense_data_len)
csio->sense_resid = csio->sense_len
- sense_data_len;
else
csio->sense_resid = 0;
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR
| CAM_AUTOSNS_VALID
| CAM_REQ_CMP_ERR;
}
break;
case PQI_RAID_DATA_IN_OUT_UNDERFLOW:
{
uint32_t resid = 0;
resid = rcb->bcount-err_info->data_out_transferred;
csio->resid = resid;
csio->ccb_h.status = CAM_REQ_CMP;
break;
}
default:
csio->ccb_h.status = CAM_REQ_CMP;
break;
}
}
if (softs->os_specific.pqi_flags & PQI_FLAG_BUSY) {
softs->os_specific.pqi_flags &= ~PQI_FLAG_BUSY;
if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
else
csio->ccb_h.status |= CAM_RELEASE_SIMQ;
}
pqi_unmap_request(rcb);
xpt_done((union ccb *)csio);
DBG_IO("OUT\n");
}
/*
* Error response handling for aio.
*/
void os_aio_response_error(rcb_t *rcb, aio_path_error_info_elem_t *err_info)
{
struct ccb_scsiio *csio;
pqisrc_softstate_t *softs;
DBG_IO("IN\n");
if (rcb == NULL)
panic("rcb is null");
rcb->status = REQUEST_SUCCESS;
csio = (struct ccb_scsiio *)&rcb->cm_ccb->csio;
if (csio == NULL)
panic("csio is null");
softs = rcb->softs;
switch (err_info->service_resp) {
case PQI_AIO_SERV_RESPONSE_COMPLETE:
csio->ccb_h.status = err_info->status;
break;
case PQI_AIO_SERV_RESPONSE_FAILURE:
switch(err_info->status) {
case PQI_AIO_STATUS_IO_ABORTED:
csio->ccb_h.status = CAM_REQ_ABORTED;
DBG_WARN_BTL(rcb->dvp, "IO aborted\n");
break;
case PQI_AIO_STATUS_UNDERRUN:
csio->ccb_h.status = CAM_REQ_CMP;
csio->resid =
LE_32(err_info->resd_count);
break;
case PQI_AIO_STATUS_OVERRUN:
csio->ccb_h.status = CAM_REQ_CMP;
break;
case PQI_AIO_STATUS_AIO_PATH_DISABLED:
DBG_WARN_BTL(rcb->dvp,"AIO Path Disabled\n");
rcb->dvp->offload_enabled = false;
csio->ccb_h.status |= CAM_REQUEUE_REQ;
break;
case PQI_AIO_STATUS_IO_ERROR:
case PQI_AIO_STATUS_IO_NO_DEVICE:
case PQI_AIO_STATUS_INVALID_DEVICE:
default:
DBG_WARN_BTL(rcb->dvp,"IO Error/Invalid/No device\n");
csio->ccb_h.status |=
CAM_SCSI_STATUS_ERROR;
break;
}
break;
case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
csio->ccb_h.status = CAM_REQ_CMP;
break;
case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
DBG_WARN_BTL(rcb->dvp,"TMF rejected/Incorrect Lun\n");
csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
break;
default:
DBG_WARN_BTL(rcb->dvp,"Scsi Status Error\n");
csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
break;
}
if(err_info->data_pres == DATA_PRESENT_SENSE_DATA ) {
csio->scsi_status = PQI_AIO_STATUS_CHECK_CONDITION;
uint8_t *sense_data = NULL;
unsigned sense_data_len = LE_16(err_info->data_len);
if (sense_data_len)
sense_data = err_info->data;
DBG_ERR_BTL(rcb->dvp, "SCSI_STATUS_CHECK_COND sense size %u\n",
sense_data_len);
memset(&csio->sense_data, 0, csio->sense_len);
if (sense_data)
memcpy(&csio->sense_data, sense_data, ((sense_data_len >
csio->sense_len) ? csio->sense_len : sense_data_len));
if (csio->sense_len > sense_data_len)
csio->sense_resid = csio->sense_len - sense_data_len;
else
csio->sense_resid = 0;
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
}
smartpqi_fix_ld_inquiry(softs, csio);
pqi_release_camq(rcb);
pqi_unmap_request(rcb);
xpt_done((union ccb *)csio);
DBG_IO("OUT\n");
}
/*
* Command-mapping helper function - populate this command's s/g table.
*/
static void
pqi_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
pqisrc_softstate_t *softs;
rcb_t *rcb;
rcb = (rcb_t *)arg;
softs = rcb->softs;
if( error || nseg > softs->pqi_cap.max_sg_elem )
{
xpt_freeze_simq(softs->os_specific.sim, 1);
rcb->cm_ccb->ccb_h.status |= (CAM_REQUEUE_REQ|
CAM_RELEASE_SIMQ);
DBG_ERR_BTL(rcb->dvp, "map failed err = %d or nseg(%d) > sgelem(%d)\n",
error, nseg, softs->pqi_cap.max_sg_elem);
pqi_unmap_request(rcb);
xpt_done((union ccb *)rcb->cm_ccb);
return;
}
rcb->sgt = os_mem_alloc(softs, nseg * sizeof(rcb_t));
rcb->nseg = nseg;
if (rcb->sgt != NULL) {
for (int i = 0; i < nseg; i++) {
rcb->sgt[i].addr = segs[i].ds_addr;
rcb->sgt[i].len = segs[i].ds_len;
rcb->sgt[i].flags = 0;
}
}
if (rcb->data_dir == SOP_DATA_DIR_FROM_DEVICE)
bus_dmamap_sync(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap, BUS_DMASYNC_PREREAD);
if (rcb->data_dir == SOP_DATA_DIR_TO_DEVICE)
bus_dmamap_sync(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap, BUS_DMASYNC_PREWRITE);
/* Call IO functions depending on pd or ld */
rcb->status = REQUEST_PENDING;
error = pqisrc_build_send_io(softs, rcb);
if (error) {
rcb->req_pending = false;
xpt_freeze_simq(softs->os_specific.sim, 1);
rcb->cm_ccb->ccb_h.status |= (CAM_REQUEUE_REQ
|CAM_RELEASE_SIMQ);
DBG_ERR_BTL(rcb->dvp, "Build IO failed, error = %d\n", error);
pqi_unmap_request(rcb);
xpt_done((union ccb *)rcb->cm_ccb);
return;
}
}
/*
* Function to dma-map the request buffer
*/
static int pqi_map_request( rcb_t *rcb )
{
pqisrc_softstate_t *softs = rcb->softs;
int error = PQI_STATUS_SUCCESS;
union ccb *ccb = rcb->cm_ccb;
DBG_FUNC("IN\n");
/* check that mapping is necessary */
if (rcb->cm_flags & PQI_CMD_MAPPED)
return(0);
rcb->cm_flags |= PQI_CMD_MAPPED;
if (rcb->bcount) {
error = bus_dmamap_load_ccb(softs->os_specific.pqi_buffer_dmat,
rcb->cm_datamap, ccb, pqi_request_map_helper, rcb, 0);
if (error != 0){
DBG_ERR_BTL(rcb->dvp, "bus_dmamap_load_ccb failed = %d count = %d\n",
error, rcb->bcount);
return error;
}
} else {
/*
* Set up the command to go to the controller. If there are no
* data buffers associated with the command then it can bypass
* busdma.
*/
/* Call IO functions depending on pd or ld */
rcb->status = REQUEST_PENDING;
error = pqisrc_build_send_io(softs, rcb);
}
DBG_FUNC("OUT error = %d\n", error);
return error;
}
/*
* Function to clear the request control block
*/
void os_reset_rcb( rcb_t *rcb )
{
rcb->error_info = NULL;
rcb->req = NULL;
rcb->status = -1;
rcb->tag = INVALID_ELEM;
rcb->dvp = NULL;
rcb->cdbp = NULL;
rcb->softs = NULL;
rcb->cm_flags = 0;
rcb->cm_data = NULL;
rcb->bcount = 0;
rcb->nseg = 0;
rcb->sgt = NULL;
rcb->cm_ccb = NULL;
rcb->encrypt_enable = false;
rcb->ioaccel_handle = 0;
rcb->resp_qid = 0;
rcb->req_pending = false;
}
/*
* Callback function for the lun rescan
*/
static void smartpqi_lunrescan_cb(struct cam_periph *periph, union ccb *ccb)
{
xpt_free_path(ccb->ccb_h.path);
xpt_free_ccb(ccb);
}
/*
* Function to rescan the lun
*/
static void smartpqi_lun_rescan(struct pqisrc_softstate *softs, int target,
int lun)
{
union ccb *ccb = NULL;
cam_status status = 0;
struct cam_path *path = NULL;
DBG_FUNC("IN\n");
ccb = xpt_alloc_ccb_nowait();
status = xpt_create_path(&path, NULL,
cam_sim_path(softs->os_specific.sim), target, lun);
if (status != CAM_REQ_CMP) {
DBG_ERR("xpt_create_path status(%d) != CAM_REQ_CMP \n",
status);
xpt_free_ccb(ccb);
return;
}
bzero(ccb, sizeof(union ccb));
xpt_setup_ccb(&ccb->ccb_h, path, 5);
ccb->ccb_h.func_code = XPT_SCAN_LUN;
ccb->ccb_h.cbfcnp = smartpqi_lunrescan_cb;
ccb->crcn.flags = CAM_FLAG_NONE;
xpt_action(ccb);
DBG_FUNC("OUT\n");
}
/*
* Function to rescan the lun under each target
*/
void smartpqi_target_rescan(struct pqisrc_softstate *softs)
{
int target = 0, lun = 0;
DBG_FUNC("IN\n");
for(target = 0; target < PQI_MAX_DEVICES; target++){
for(lun = 0; lun < PQI_MAX_MULTILUN; lun++){
if(softs->device_list[target][lun]){
smartpqi_lun_rescan(softs, target, lun);
}
}
}
DBG_FUNC("OUT\n");
}
/*
* Set the mode of tagged command queueing for the current task.
*/
uint8_t os_get_task_attr(rcb_t *rcb)
{
union ccb *ccb = rcb->cm_ccb;
uint8_t tag_action = SOP_TASK_ATTRIBUTE_SIMPLE;
switch(ccb->csio.tag_action) {
case MSG_HEAD_OF_Q_TAG:
tag_action = SOP_TASK_ATTRIBUTE_HEAD_OF_QUEUE;
break;
case MSG_ORDERED_Q_TAG:
tag_action = SOP_TASK_ATTRIBUTE_ORDERED;
break;
case MSG_SIMPLE_Q_TAG:
default:
tag_action = SOP_TASK_ATTRIBUTE_SIMPLE;
break;
}
return tag_action;
}
/*
* Complete all outstanding commands
*/
void os_complete_outstanding_cmds_nodevice(pqisrc_softstate_t *softs)
{
int tag = 0;
DBG_FUNC("IN\n");
for (tag = 1; tag < softs->max_outstanding_io; tag++) {
rcb_t *prcb = &softs->rcb[tag];
if(prcb->req_pending && prcb->cm_ccb ) {
prcb->req_pending = false;
prcb->cm_ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_REQ_CMP;
xpt_done((union ccb *)prcb->cm_ccb);
prcb->cm_ccb = NULL;
}
}
DBG_FUNC("OUT\n");
}
/*
* IO handling functionality entry point
*/
static int pqisrc_io_start(struct cam_sim *sim, union ccb *ccb)
{
rcb_t *rcb;
uint32_t tag, no_transfer = 0;
pqisrc_softstate_t *softs = (struct pqisrc_softstate *)
cam_sim_softc(sim);
int32_t error = PQI_STATUS_FAILURE;
pqi_scsi_dev_t *dvp;
DBG_FUNC("IN\n");
if( softs->device_list[ccb->ccb_h.target_id][ccb->ccb_h.target_lun] == NULL ) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
DBG_INFO("Device = %d not there\n", ccb->ccb_h.target_id);
return PQI_STATUS_FAILURE;
}
dvp = softs->device_list[ccb->ccb_h.target_id][ccb->ccb_h.target_lun];
/* Check controller state */
if (IN_PQI_RESET(softs)) {
ccb->ccb_h.status = CAM_SCSI_BUS_RESET
| CAM_BUSY | CAM_REQ_INPROG;
DBG_WARN("Device = %d BUSY/IN_RESET\n", ccb->ccb_h.target_id);
return error;
}
/* Check device state */
if (pqisrc_ctrl_offline(softs) || DEV_GONE(dvp)) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE | CAM_REQ_CMP;
DBG_WARN("Device = %d GONE/OFFLINE\n", ccb->ccb_h.target_id);
return error;
}
/* Check device reset */
if (DEV_RESET(dvp)) {
ccb->ccb_h.status = CAM_SCSI_BUSY | CAM_REQ_INPROG | CAM_BUSY;
DBG_WARN("Device %d reset returned busy\n", ccb->ccb_h.target_id);
return error;
}
if (dvp->expose_device == false) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
DBG_INFO("Device = %d not exposed\n", ccb->ccb_h.target_id);
return error;
}
tag = pqisrc_get_tag(&softs->taglist);
if( tag == INVALID_ELEM ) {
DBG_ERR("Get Tag failed\n");
xpt_freeze_simq(softs->os_specific.sim, 1);
softs->os_specific.pqi_flags |= PQI_FLAG_BUSY;
ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_RELEASE_SIMQ);
return PQI_STATUS_FAILURE;
}
DBG_IO("tag = %d &softs->taglist : %p\n", tag, &softs->taglist);
rcb = &softs->rcb[tag];
os_reset_rcb( rcb );
rcb->tag = tag;
rcb->softs = softs;
rcb->cmdlen = ccb->csio.cdb_len;
ccb->ccb_h.sim_priv.entries[0].ptr = rcb;
switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
case CAM_DIR_IN:
rcb->data_dir = SOP_DATA_DIR_FROM_DEVICE;
break;
case CAM_DIR_OUT:
rcb->data_dir = SOP_DATA_DIR_TO_DEVICE;
break;
case CAM_DIR_NONE:
no_transfer = 1;
break;
default:
DBG_ERR("Unknown Dir\n");
break;
}
rcb->cm_ccb = ccb;
rcb->dvp = softs->device_list[ccb->ccb_h.target_id][ccb->ccb_h.target_lun];
if (!no_transfer) {
rcb->cm_data = (void *)ccb->csio.data_ptr;
rcb->bcount = ccb->csio.dxfer_len;
} else {
rcb->cm_data = NULL;
rcb->bcount = 0;
}
/*
* Submit the request to the adapter.
*
* Note that this may fail if we're unable to map the request (and
* if we ever learn a transport layer other than simple, may fail
* if the adapter rejects the command).
*/
if ((error = pqi_map_request(rcb)) != 0) {
rcb->req_pending = false;
xpt_freeze_simq(softs->os_specific.sim, 1);
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
if (error == EINPROGRESS) {
DBG_WARN("In Progress on %d\n", ccb->ccb_h.target_id);
error = 0;
} else {
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
DBG_WARN("Requeue req error = %d target = %d\n", error,
ccb->ccb_h.target_id);
pqi_unmap_request(rcb);
}
}
DBG_FUNC("OUT error = %d\n", error);
return error;
}
/*
* Abort a task, task management functionality
*/
static int
pqisrc_scsi_abort_task(pqisrc_softstate_t *softs, union ccb *ccb)
{
rcb_t *rcb = ccb->ccb_h.sim_priv.entries[0].ptr;
uint32_t abort_tag = rcb->tag;
uint32_t tag = 0;
int rval = PQI_STATUS_SUCCESS;
uint16_t qid;
DBG_FUNC("IN\n");
qid = (uint16_t)rcb->resp_qid;
tag = pqisrc_get_tag(&softs->taglist);
rcb = &softs->rcb[tag];
rcb->tag = tag;
rcb->resp_qid = qid;
rval = pqisrc_send_tmf(softs, rcb->dvp, rcb, abort_tag,
SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK);
if (PQI_STATUS_SUCCESS == rval) {
rval = rcb->status;
if (REQUEST_SUCCESS == rval) {
ccb->ccb_h.status = CAM_REQ_ABORTED;
}
}
pqisrc_put_tag(&softs->taglist, abort_tag);
pqisrc_put_tag(&softs->taglist,rcb->tag);
DBG_FUNC("OUT rval = %d\n", rval);
return rval;
}
/*
* Abort a taskset, task management functionality
*/
static int
pqisrc_scsi_abort_task_set(pqisrc_softstate_t *softs, union ccb *ccb)
{
rcb_t *rcb = NULL;
uint32_t tag = 0;
int rval = PQI_STATUS_SUCCESS;
DBG_FUNC("IN\n");
tag = pqisrc_get_tag(&softs->taglist);
rcb = &softs->rcb[tag];
rcb->tag = tag;
rval = pqisrc_send_tmf(softs, rcb->dvp, rcb, 0,
SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK_SET);
if (rval == PQI_STATUS_SUCCESS) {
rval = rcb->status;
}
pqisrc_put_tag(&softs->taglist,rcb->tag);
DBG_FUNC("OUT rval = %d\n", rval);
return rval;
}
/*
* Target reset task management functionality
*/
static int
pqisrc_target_reset( pqisrc_softstate_t *softs, union ccb *ccb)
{
pqi_scsi_dev_t *devp = softs->device_list[ccb->ccb_h.target_id][ccb->ccb_h.target_lun];
rcb_t *rcb = NULL;
uint32_t tag = 0;
int rval = PQI_STATUS_SUCCESS;
DBG_FUNC("IN\n");
if (devp == NULL) {
DBG_ERR("bad target t%d\n", ccb->ccb_h.target_id);
return (-1);
}
tag = pqisrc_get_tag(&softs->taglist);
rcb = &softs->rcb[tag];
rcb->tag = tag;
devp->reset_in_progress = true;
rval = pqisrc_send_tmf(softs, devp, rcb, 0,
SOP_TASK_MANAGEMENT_LUN_RESET);
if (PQI_STATUS_SUCCESS == rval) {
rval = rcb->status;
}
devp->reset_in_progress = false;
pqisrc_put_tag(&softs->taglist,rcb->tag);
DBG_FUNC("OUT rval = %d\n", rval);
return ((rval == REQUEST_SUCCESS) ?
PQI_STATUS_SUCCESS : PQI_STATUS_FAILURE);
}
/*
* cam entry point of the smartpqi module.
*/
static void smartpqi_cam_action(struct cam_sim *sim, union ccb *ccb)
{
struct pqisrc_softstate *softs = cam_sim_softc(sim);
struct ccb_hdr *ccb_h = &ccb->ccb_h;
DBG_FUNC("IN\n");
switch (ccb_h->func_code) {
case XPT_SCSI_IO:
{
if(!pqisrc_io_start(sim, ccb)) {
return;
}
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
ccg = &ccb->ccg;
if (ccg->block_size == 0) {
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
cam_calc_geometry(ccg, /* extended */ 1);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_PATH_INQ:
{
update_sim_properties(sim, &ccb->cpi);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_GET_TRAN_SETTINGS:
get_transport_settings(softs, &ccb->cts);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
case XPT_ABORT:
if(pqisrc_scsi_abort_task(softs, ccb)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(ccb);
DBG_ERR("Abort task failed on %d\n",
ccb->ccb_h.target_id);
return;
}
break;
case XPT_TERM_IO:
if (pqisrc_scsi_abort_task_set(softs, ccb)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
DBG_ERR("Abort task set failed on %d\n",
ccb->ccb_h.target_id);
xpt_done(ccb);
return;
}
break;
case XPT_RESET_DEV:
if(pqisrc_target_reset(softs, ccb)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
DBG_ERR("Target reset failed on %d\n",
ccb->ccb_h.target_id);
xpt_done(ccb);
return;
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
}
break;
case XPT_RESET_BUS:
ccb->ccb_h.status = CAM_REQ_CMP;
break;
case XPT_SET_TRAN_SETTINGS:
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
return;
default:
DBG_WARN("UNSUPPORTED FUNC CODE\n");
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
break;
}
xpt_done(ccb);
DBG_FUNC("OUT\n");
}
/*
* Function to poll the response, when interrupts are unavailable
* This also serves supporting crash dump.
*/
static void smartpqi_poll(struct cam_sim *sim)
{
struct pqisrc_softstate *softs = cam_sim_softc(sim);
int i;
for (i = 1; i < softs->intr_count; i++ )
pqisrc_process_response_queue(softs, i);
}
/*
* Function to adjust the queue depth of a device
*/
void smartpqi_adjust_queue_depth(struct cam_path *path, uint32_t queue_depth)
{
struct ccb_relsim crs;
DBG_INFO("IN\n");
xpt_setup_ccb(&crs.ccb_h, path, 5);
crs.ccb_h.func_code = XPT_REL_SIMQ;
crs.ccb_h.flags = CAM_DEV_QFREEZE;
crs.release_flags = RELSIM_ADJUST_OPENINGS;
crs.openings = queue_depth;
xpt_action((union ccb *)&crs);
if(crs.ccb_h.status != CAM_REQ_CMP) {
printf("XPT_REL_SIMQ failed stat=%d\n", crs.ccb_h.status);
}
DBG_INFO("OUT\n");
}
/*
* Function to register async callback for setting queue depth
*/
static void
smartpqi_async(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct pqisrc_softstate *softs;
softs = (struct pqisrc_softstate*)callback_arg;
DBG_FUNC("IN\n");
switch (code) {
case AC_FOUND_DEVICE:
{
struct ccb_getdev *cgd;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL) {
break;
}
uint32_t t_id = cgd->ccb_h.target_id;
if (t_id <= (PQI_CTLR_INDEX - 1)) {
if (softs != NULL) {
pqi_scsi_dev_t *dvp = softs->device_list[t_id][cgd->ccb_h.target_lun];
smartpqi_adjust_queue_depth(path,
dvp->queue_depth);
}
}
break;
}
default:
break;
}
DBG_FUNC("OUT\n");
}
/*
* Function to register sim with CAM layer for smartpqi driver
*/
int register_sim(struct pqisrc_softstate *softs, int card_index)
{
int error = 0;
int max_transactions;
union ccb *ccb = NULL;
cam_status status = 0;
struct ccb_setasync csa;
struct cam_sim *sim;
DBG_FUNC("IN\n");
max_transactions = softs->max_io_for_scsi_ml;
softs->os_specific.devq = cam_simq_alloc(max_transactions);
if (softs->os_specific.devq == NULL) {
DBG_ERR("cam_simq_alloc failed txns = %d\n",
max_transactions);
return PQI_STATUS_FAILURE;
}
sim = cam_sim_alloc(smartpqi_cam_action, \
smartpqi_poll, "smartpqi", softs, \
card_index, &softs->os_specific.cam_lock, \
1, max_transactions, softs->os_specific.devq);
if (sim == NULL) {
DBG_ERR("cam_sim_alloc failed txns = %d\n",
max_transactions);
cam_simq_free(softs->os_specific.devq);
return PQI_STATUS_FAILURE;
}
softs->os_specific.sim = sim;
mtx_lock(&softs->os_specific.cam_lock);
status = xpt_bus_register(sim, softs->os_specific.pqi_dev, 0);
if (status != CAM_SUCCESS) {
DBG_ERR("xpt_bus_register failed status=%d\n", status);
cam_sim_free(softs->os_specific.sim, FALSE);
cam_simq_free(softs->os_specific.devq);
mtx_unlock(&softs->os_specific.cam_lock);
return PQI_STATUS_FAILURE;
}
softs->os_specific.sim_registered = TRUE;
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
DBG_ERR("xpt_create_path failed\n");
return PQI_STATUS_FAILURE;
}
if (xpt_create_path(&ccb->ccb_h.path, NULL,
cam_sim_path(softs->os_specific.sim),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
DBG_ERR("xpt_create_path failed\n");
xpt_free_ccb(ccb);
xpt_bus_deregister(cam_sim_path(softs->os_specific.sim));
cam_sim_free(softs->os_specific.sim, TRUE);
mtx_unlock(&softs->os_specific.cam_lock);
return PQI_STATUS_FAILURE;
}
/*
* Callback to set the queue depth per target which is
* derived from the FW.
*/
softs->os_specific.path = ccb->ccb_h.path;
xpt_setup_ccb(&csa.ccb_h, softs->os_specific.path, 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_FOUND_DEVICE;
csa.callback = smartpqi_async;
csa.callback_arg = softs;
xpt_action((union ccb *)&csa);
if (csa.ccb_h.status != CAM_REQ_CMP) {
DBG_ERR("Unable to register smartpqi_aysnc handler: %d!\n",
csa.ccb_h.status);
}
mtx_unlock(&softs->os_specific.cam_lock);
DBG_INFO("OUT\n");
return error;
}
/*
* Function to deregister smartpqi sim from cam layer
*/
void deregister_sim(struct pqisrc_softstate *softs)
{
struct ccb_setasync csa;
DBG_FUNC("IN\n");
if (softs->os_specific.mtx_init) {
mtx_lock(&softs->os_specific.cam_lock);
}
xpt_setup_ccb(&csa.ccb_h, softs->os_specific.path, 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = 0;
csa.callback = smartpqi_async;
csa.callback_arg = softs;
xpt_action((union ccb *)&csa);
xpt_free_path(softs->os_specific.path);
xpt_release_simq(softs->os_specific.sim, 0);
xpt_bus_deregister(cam_sim_path(softs->os_specific.sim));
softs->os_specific.sim_registered = FALSE;
if (softs->os_specific.sim) {
cam_sim_free(softs->os_specific.sim, FALSE);
softs->os_specific.sim = NULL;
}
if (softs->os_specific.mtx_init) {
mtx_unlock(&softs->os_specific.cam_lock);
}
if (softs->os_specific.devq != NULL) {
cam_simq_free(softs->os_specific.devq);
}
if (softs->os_specific.mtx_init) {
mtx_destroy(&softs->os_specific.cam_lock);
softs->os_specific.mtx_init = FALSE;
}
mtx_destroy(&softs->os_specific.map_lock);
DBG_FUNC("OUT\n");
}
static void smartpqi_cam_action(struct cam_sim *, union ccb *);
static void smartpqi_poll(struct cam_sim *);