static TW_VOID
twa_watchdog(TW_VOID *arg)
{
struct tw_cl_ctlr_handle *ctlr_handle =
(struct tw_cl_ctlr_handle *)arg;
struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt;
int i;
int i_need_a_reset = 0;
int driver_is_active = 0;
TW_UINT64 current_time;
struct tw_osli_req_context *my_req;
//==============================================================================
current_time = (TW_UINT64) (tw_osl_get_local_time());
for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) {
my_req = &(sc->req_ctx_buf[i]);
if ((my_req->state == TW_OSLI_REQ_STATE_BUSY) &&
(my_req->deadline) &&
(my_req->deadline < current_time)) {
tw_cl_set_reset_needed(ctlr_handle);
#ifdef TW_OSL_DEBUG
device_printf((sc)->bus_dev, "Request %d timed out! d = %llu, c = %llu\n", i, my_req->deadline, current_time);
#else /* TW_OSL_DEBUG */
device_printf((sc)->bus_dev, "Request %d timed out!\n", i);
#endif /* TW_OSL_DEBUG */
break;
}
}
//==============================================================================
i_need_a_reset = tw_cl_is_reset_needed(ctlr_handle);
i = (int) ((sc->watchdog_index++) & 1);
driver_is_active = tw_cl_is_active(ctlr_handle);
if (i_need_a_reset) {
#ifdef TW_OSL_DEBUG
device_printf((sc)->bus_dev, "Watchdog rescheduled in 70 seconds\n");
#endif /* TW_OSL_DEBUG */
callout_reset(&(sc->watchdog_callout[i]), 70*hz, twa_watchdog, &sc->ctlr_handle);
tw_cl_reset_ctlr(ctlr_handle);
#ifdef TW_OSL_DEBUG
device_printf((sc)->bus_dev, "Watchdog reset completed!\n");
#endif /* TW_OSL_DEBUG */
} else if (driver_is_active) {
callout_reset(&(sc->watchdog_callout[i]), 5*hz, twa_watchdog, &sc->ctlr_handle);
}
#ifdef TW_OSL_DEBUG
if (i_need_a_reset)
device_printf((sc)->bus_dev, "i_need_a_reset = %d, "
"driver_is_active = %d\n",
i_need_a_reset, driver_is_active);
#endif /* TW_OSL_DEBUG */
}
/*
* Function name: twa_action
* Description: Driver entry point for CAM's use.
*
* Input: sim -- sim corresponding to the ctlr
* ccb -- ptr to CAM request
* Output: None
* Return value: None
*/
TW_VOID
twa_action(struct cam_sim *sim, union ccb *ccb)
{
struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim);
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
switch (ccb_h->func_code) {
case XPT_SCSI_IO: /* SCSI I/O */
{
struct tw_osli_req_context *req;
req = tw_osli_get_request(sc);
if (req == NULL) {
tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt.");
/*
* Freeze the simq to maintain ccb ordering. The next
* ccb that gets completed will unfreeze the simq.
*/
ccb_h->status &= ~CAM_SIM_QUEUED;
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
break;
}
if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) {
ccb_h->status &= ~CAM_SIM_QUEUED;
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
break;
}
req->req_handle.osl_req_ctxt = req;
req->req_handle.is_io = TW_CL_TRUE;
req->orig_req = ccb;
if (tw_osli_execute_scsi(req, ccb))
tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
break;
}
case XPT_ABORT:
tw_osli_dbg_dprintf(2, sc, "Abort request.");
ccb_h->status = CAM_UA_ABORT;
xpt_done(ccb);
break;
case XPT_RESET_BUS:
tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING,
"Received Reset Bus request from CAM",
" ");
tw_cl_set_reset_needed(&(sc->ctlr_handle));
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
case XPT_SET_TRAN_SETTINGS:
tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS");
/*
* This command is not supported, since it's very specific
* to SCSI, and we are doing ATA.
*/
ccb_h->status = CAM_FUNC_NOTAVAIL;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
struct ccb_trans_settings_scsi *scsi =
&cts->proto_specific.scsi;
struct ccb_trans_settings_spi *spi =
&cts->xport_specific.spi;
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_2;
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;
tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS");
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY");
cam_calc_geometry(&ccb->ccg, 1/* extended */);
xpt_done(ccb);
break;
case XPT_PATH_INQ: /* Path inquiry -- get twa properties */
{
struct ccb_pathinq *path_inq = &ccb->cpi;
tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request");
path_inq->version_num = 1;
path_inq->hba_inquiry = 0;
path_inq->target_sprt = 0;
path_inq->hba_misc = 0;
path_inq->hba_eng_cnt = 0;
path_inq->max_target = TW_CL_MAX_NUM_UNITS;
path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1;
path_inq->unit_number = cam_sim_unit(sim);
path_inq->bus_id = cam_sim_bus(sim);
path_inq->initiator_id = TW_CL_MAX_NUM_UNITS;
path_inq->base_transfer_speed = 100000;
strlcpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN);
strlcpy(path_inq->hba_vid, "3ware", HBA_IDLEN);
strlcpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN);
path_inq->transport = XPORT_SPI;
path_inq->transport_version = 2;
path_inq->protocol = PROTO_SCSI;
path_inq->protocol_version = SCSI_REV_2;
path_inq->maxio = TW_CL_MAX_IO_SIZE;
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code);
ccb_h->status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
