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: tw_osl_timeout
* Description: Call to timeout().
*
* Input: req_handle -- ptr to request handle sent by OSL.
* Output: None
* Return value: None
*/
TW_VOID
tw_osl_timeout(struct tw_cl_req_handle *req_handle)
{
struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
union ccb *ccb = (union ccb *)(req->orig_req);
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000);
}
/*
* Function name: tw_cli_poll_status
* Description: Poll for a given status to show up in the firmware
* status register.
*
* Input: ctlr -- ptr to CL internal ctlr context
* status -- status to look for
* timeout -- max # of seconds to wait before giving up
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
TW_INT32
tw_cli_poll_status(struct tw_cli_ctlr_context *ctlr, TW_UINT32 status,
TW_UINT32 timeout)
{
TW_TIME end_time;
TW_UINT32 status_reg;
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
end_time = tw_osl_get_local_time() + timeout;
do {
status_reg = TW_CLI_READ_STATUS_REGISTER(ctlr->ctlr_handle);
if ((status_reg & status) == status)
/* got the required bit(s) */
return(TW_OSL_ESUCCESS);
tw_osl_delay(1000);
} while (tw_osl_get_local_time() <= end_time);
return(TW_OSL_ETIMEDOUT);
}
/*
* Function name: tw_cli_manage_aen
* Description: Handles AEN's.
*
* Input: ctlr -- ptr to CL internal ctlr context
* req -- ptr to CL internal request context
* Output: None
* Return value: None
*/
TW_UINT16
tw_cli_manage_aen(struct tw_cli_ctlr_context *ctlr,
struct tw_cli_req_context *req)
{
struct tw_cl_command_header *cmd_hdr;
TW_UINT16 aen_code;
TW_TIME local_time;
TW_TIME sync_time;
TW_UINT32 error;
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
cmd_hdr = (struct tw_cl_command_header *)(req->data);
aen_code = cmd_hdr->status_block.error;
switch (aen_code) {
case TWA_AEN_SYNC_TIME_WITH_HOST:
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(),
"Received AEN_SYNC_TIME");
/*
* Free the internal req pkt right here, since
* tw_cli_set_param will need it.
*/
ctlr->internal_req_busy = TW_CL_FALSE;
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
/*
* We will use a callback in tw_cli_set_param only when
* interrupts are enabled and we can expect our callback
* to get called. Setting the get_more_aens
* flag will make the callback continue to try to retrieve
* more AEN's.
*/
if (ctlr->interrupts_enabled)
ctlr->get_more_aens = TW_CL_TRUE;
/* Calculate time (in seconds) since last Sunday 12.00 AM. */
local_time = tw_osl_get_local_time();
sync_time = (local_time - (3 * 86400)) % 604800;
if ((error = tw_cli_set_param(ctlr, TWA_PARAM_TIME_TABLE,
TWA_PARAM_TIME_SCHED_TIME, 4,
&sync_time,
(ctlr->interrupts_enabled)
? tw_cli_param_callback : TW_CL_NULL)))
tw_cl_create_event(ctlr->ctlr_handle, TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
0x1208, 0x1, TW_CL_SEVERITY_ERROR_STRING,
"Unable to sync time with ctlr",
"error = %d", error);
break;
case TWA_AEN_QUEUE_EMPTY:
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(),
"AEN queue empty");
break;
default:
/* Queue the event. */
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(),
"Queueing AEN");
tw_cli_create_ctlr_event(ctlr,
TW_CL_MESSAGE_SOURCE_CONTROLLER_EVENT,
cmd_hdr);
break;
} /* switch */
return(aen_code);
}
/*
* Function name: tw_osli_fw_passthru
* Description: Builds a fw passthru cmd pkt, and submits it to CL.
*
* Input: sc -- ptr to OSL internal ctlr context
* buf -- ptr to ioctl pkt understood by CL
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
TW_INT32
tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf)
{
struct tw_osli_req_context *req;
struct tw_osli_ioctl_no_data_buf *user_buf =
(struct tw_osli_ioctl_no_data_buf *)buf;
TW_TIME end_time;
TW_UINT32 timeout = 60;
TW_UINT32 data_buf_size_adjusted;
struct tw_cl_req_packet *req_pkt;
struct tw_cl_passthru_req_packet *pt_req;
TW_INT32 error;
tw_osli_dbg_dprintf(5, sc, "ioctl: passthru");
if ((req = tw_osli_get_request(sc)) == NULL)
return(EBUSY);
req->req_handle.osl_req_ctxt = req;
req->orig_req = buf;
req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU;
req_pkt = &(req->req_pkt);
req_pkt->status = 0;
req_pkt->tw_osl_callback = tw_osl_complete_passthru;
/* Let the Common Layer retry the request on cmd queue full. */
req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY;
pt_req = &(req_pkt->gen_req_pkt.pt_req);
/*
* Make sure that the data buffer sent to firmware is a
* 512 byte multiple in size.
*/
data_buf_size_adjusted =
(user_buf->driver_pkt.buffer_length +
(sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1);
if ((req->length = data_buf_size_adjusted)) {
if ((req->data = malloc(data_buf_size_adjusted,
TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) {
error = ENOMEM;
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2016,
"Could not alloc mem for "
"fw_passthru data_buf",
error);
goto fw_passthru_err;
}
/* Copy the payload. */
if ((error = copyin((TW_VOID *)(user_buf->pdata),
req->data,
user_buf->driver_pkt.buffer_length)) != 0) {
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2017,
"Could not copyin fw_passthru data_buf",
error);
goto fw_passthru_err;
}
pt_req->sgl_entries = 1; /* will be updated during mapping */
req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN |
TW_OSLI_REQ_FLAGS_DATA_OUT);
} else
pt_req->sgl_entries = 0; /* no payload */
pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt));
pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet);
if ((error = tw_osli_map_request(req)))
goto fw_passthru_err;
end_time = tw_osl_get_local_time() + timeout;
while (req->state != TW_OSLI_REQ_STATE_COMPLETE) {
mtx_lock(req->ioctl_wake_timeout_lock);
req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING;
error = mtx_sleep(req, req->ioctl_wake_timeout_lock, 0,
"twa_passthru", timeout*hz);
mtx_unlock(req->ioctl_wake_timeout_lock);
if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING))
error = 0;
req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING;
if (! error) {
if (((error = req->error_code)) ||
((error = (req->state !=
TW_OSLI_REQ_STATE_COMPLETE))) ||
((error = req_pkt->status)))
goto fw_passthru_err;
break;
}
if (req_pkt->status) {
error = req_pkt->status;
goto fw_passthru_err;
}
if (error == EWOULDBLOCK) {
/* Time out! */
if ((!(req->error_code)) &&
(req->state == TW_OSLI_REQ_STATE_COMPLETE) &&
(!(req_pkt->status)) ) {
#ifdef TW_OSL_DEBUG
tw_osli_printf(sc, "request = %p",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x7777,
"FALSE Passthru timeout!",
req);
#endif /* TW_OSL_DEBUG */
error = 0; /* False error */
break;
}
if (!(tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) {
#ifdef TW_OSL_DEBUG
tw_osli_printf(sc, "request = %p",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2018,
"Passthru request timed out!",
req);
#else /* TW_OSL_DEBUG */
device_printf((sc)->bus_dev, "Passthru request timed out!\n");
#endif /* TW_OSL_DEBUG */
tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle));
}
error = 0;
end_time = tw_osl_get_local_time() + timeout;
continue;
/*
* Don't touch req after a reset. It (and any
* associated data) will be
* unmapped by the callback.
*/
}
/*
* Either the request got completed, or we were woken up by a
* signal. Calculate the new timeout, in case it was the latter.
*/
timeout = (end_time - tw_osl_get_local_time());
} /* End of while loop */
/* If there was a payload, copy it back. */
if ((!error) && (req->length))
if ((error = copyout(req->data, user_buf->pdata,
user_buf->driver_pkt.buffer_length)))
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2019,
"Could not copyout fw_passthru data_buf",
error);
fw_passthru_err:
if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET)
error = EBUSY;
user_buf->driver_pkt.os_status = error;
/* Free resources. */
if (req->data)
free(req->data, TW_OSLI_MALLOC_CLASS);
tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
return(error);
}
/*
* Function name: tw_osli_execute_scsi
* Description: Build a fw cmd, based on a CAM style ccb, and
* send it down.
*
* Input: req -- ptr to OSL internal request context
* ccb -- ptr to CAM style ccb
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
TW_INT32
tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb)
{
struct twa_softc *sc = req->ctlr;
struct tw_cl_req_packet *req_pkt;
struct tw_cl_scsi_req_packet *scsi_req;
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
TW_INT32 error;
tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x",
csio->cdb_io.cdb_bytes[0]);
if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) {
tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %jx",
ccb_h->path_id, ccb_h->target_id,
(uintmax_t)ccb_h->target_lun);
ccb_h->status |= CAM_TID_INVALID;
xpt_done(ccb);
return(1);
}
if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) {
tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %jx",
ccb_h->path_id, ccb_h->target_id,
(uintmax_t)ccb_h->target_lun);
ccb_h->status |= CAM_LUN_INVALID;
xpt_done(ccb);
return(1);
}
if(ccb_h->flags & CAM_CDB_PHYS) {
tw_osli_printf(sc, "",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2105,
"Physical CDB address!");
ccb_h->status = CAM_REQ_INVALID;
xpt_done(ccb);
return(1);
}
/*
* We are going to work on this request. Mark it as enqueued (though
* we don't actually queue it...)
*/
ccb_h->status |= CAM_SIM_QUEUED;
if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if(ccb_h->flags & CAM_DIR_IN)
req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN;
else
req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT;
}
/* Build the CL understood request packet for SCSI cmds. */
req_pkt = &req->req_pkt;
req_pkt->status = 0;
req_pkt->tw_osl_callback = tw_osl_complete_io;
scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
scsi_req->unit = ccb_h->target_id;
scsi_req->lun = ccb_h->target_lun;
scsi_req->sense_len = 0;
scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data);
scsi_req->scsi_status = 0;
if(ccb_h->flags & CAM_CDB_POINTER)
scsi_req->cdb = csio->cdb_io.cdb_ptr;
else
scsi_req->cdb = csio->cdb_io.cdb_bytes;
scsi_req->cdb_len = csio->cdb_len;
if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) {
tw_osli_printf(sc, "size = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2106,
"I/O size too big",
csio->dxfer_len);
ccb_h->status = CAM_REQ_TOO_BIG;
ccb_h->status &= ~CAM_SIM_QUEUED;
xpt_done(ccb);
return(1);
}
if ((ccb_h->flags & CAM_DATA_MASK) == CAM_DATA_VADDR) {
if ((req->length = csio->dxfer_len) != 0) {
req->data = csio->data_ptr;
scsi_req->sgl_entries = 1;
}
} else
req->flags |= TW_OSLI_REQ_FLAGS_CCB;
req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000);
/*
* twa_map_load_data_callback will fill in the SGL,
* and submit the I/O.
*/
error = tw_osli_map_request(req);
if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) {
req->deadline = 0;
ccb_h->status = CAM_REQ_CMP_ERR;
ccb_h->status &= ~CAM_SIM_QUEUED;
xpt_done(ccb);
}
return(error);
}
/*
* Function name: tw_cl_create_event
* Description: Creates and queues ctlr/CL/OSL AEN's to be
* supplied to user-space tools on request.
* Also notifies OS Layer.
* Input: ctlr -- ptr to CL internal ctlr context
* queue_event-- TW_CL_TRUE --> queue event;
* TW_CL_FALSE--> don't queue event
* (simply notify OSL)
* event_src -- source of event
* event_code -- AEN/error code
* severity -- severity of event
* severity_str--Text description of severity
* event_desc -- standard string related to the event/error
* event_specific_desc -- format string for additional
* info about the event
* ... -- additional arguments conforming to the format
* specified by event_specific_desc
* Output: None
* Return value: None
*/
TW_VOID
tw_cl_create_event(struct tw_cl_ctlr_handle *ctlr_handle,
TW_UINT8 queue_event, TW_UINT8 event_src, TW_UINT16 event_code,
TW_UINT8 severity, TW_UINT8 *severity_str, TW_UINT8 *event_desc,
TW_UINT8 *event_specific_desc, ...)
{
struct tw_cli_ctlr_context *ctlr = ctlr_handle->cl_ctlr_ctxt;
struct tw_cl_event_packet event_pkt;
struct tw_cl_event_packet *event;
TW_UINT32 aen_head;
va_list ap;
tw_cli_dbg_printf(8, ctlr_handle, tw_osl_cur_func(), "entered");
if ((ctlr) && (queue_event)) {
/* Protect access to ctlr->aen_head. */
tw_osl_get_lock(ctlr_handle, ctlr->gen_lock);
aen_head = ctlr->aen_head;
ctlr->aen_head = (aen_head + 1) % ctlr->max_aens_supported;
/* Queue the event. */
event = &(ctlr->aen_queue[aen_head]);
tw_osl_memzero(event->parameter_data,
sizeof(event->parameter_data));
if (event->retrieved == TW_CL_AEN_NOT_RETRIEVED)
ctlr->aen_q_overflow = TW_CL_TRUE;
event->sequence_id = ++(ctlr->aen_cur_seq_id);
if ((aen_head + 1) == ctlr->max_aens_supported) {
tw_cli_dbg_printf(4, ctlr->ctlr_handle,
tw_osl_cur_func(), "AEN queue wrapped");
ctlr->aen_q_wrapped = TW_CL_TRUE;
}
/* Free access to ctlr->aen_head. */
tw_osl_free_lock(ctlr_handle, ctlr->gen_lock);
} else {
event = &event_pkt;
tw_osl_memzero(event, sizeof(struct tw_cl_event_packet));
}
event->event_src = event_src;
event->time_stamp_sec = (TW_UINT32)tw_osl_get_local_time();
event->aen_code = event_code;
event->severity = severity;
tw_osl_strcpy(event->severity_str, severity_str);
event->retrieved = TW_CL_AEN_NOT_RETRIEVED;
va_start(ap, event_specific_desc);
tw_osl_vsprintf(event->parameter_data, event_specific_desc, ap);
va_end(ap);
event->parameter_len =
(TW_UINT8)(tw_osl_strlen(event->parameter_data));
tw_osl_strcpy(event->parameter_data + event->parameter_len + 1,
event_desc);
event->parameter_len += (1 + tw_osl_strlen(event_desc));
tw_cli_dbg_printf(4, ctlr_handle, tw_osl_cur_func(),
"event = %x %x %x %x %x %x %x\n %s",
event->sequence_id,
event->time_stamp_sec,
event->aen_code,
event->severity,
event->retrieved,
event->repeat_count,
event->parameter_len,
event->parameter_data);
tw_osl_notify_event(ctlr_handle, event);
}
/*
* Function name: tw_cli_drain_aen_queue
* Description: Fetches all un-retrieved AEN's posted by fw.
*
* Input: ctlr -- ptr to CL internal ctlr context
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
TW_INT32
tw_cli_drain_aen_queue(struct tw_cli_ctlr_context *ctlr)
{
struct tw_cli_req_context *req;
struct tw_cl_command_header *cmd_hdr;
TW_TIME end_time;
TW_UINT16 aen_code;
TW_INT32 error;
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
for (;;) {
if ((req = tw_cli_get_request(ctlr
)) == TW_CL_NULL) {
error = TW_OSL_EBUSY;
break;
}
req->flags |= TW_CLI_REQ_FLAGS_INTERNAL;
req->tw_cli_callback = TW_CL_NULL;
if ((error = tw_cli_send_scsi_cmd(req,
0x03 /* REQUEST_SENSE */))) {
tw_cli_dbg_printf(1, ctlr->ctlr_handle,
tw_osl_cur_func(),
"Cannot send command to fetch aen");
break;
}
end_time = tw_osl_get_local_time() +
TW_CLI_REQUEST_TIMEOUT_PERIOD;
do {
if ((error = req->error_code))
/*
* This will take care of completion due to
* a reset, or a failure in
* tw_cli_submit_pending_queue.
*/
goto out;
tw_cli_process_resp_intr(req->ctlr);
if ((req->state != TW_CLI_REQ_STATE_BUSY) &&
(req->state != TW_CLI_REQ_STATE_PENDING))
break;
} while (tw_osl_get_local_time() <= end_time);
if (req->state != TW_CLI_REQ_STATE_COMPLETE) {
error = TW_OSL_ETIMEDOUT;
break;
}
if ((error = req->cmd_pkt->command.cmd_pkt_9k.status)) {
cmd_hdr = &req->cmd_pkt->cmd_hdr;
#if 0
tw_cli_create_ctlr_event(ctlr,
TW_CL_MESSAGE_SOURCE_CONTROLLER_ERROR,
cmd_hdr);
#endif // 0
break;
}
aen_code = tw_cli_manage_aen(ctlr, req);
if (aen_code == TWA_AEN_QUEUE_EMPTY)
break;
if (aen_code == TWA_AEN_SYNC_TIME_WITH_HOST)
continue;
ctlr->internal_req_busy = TW_CL_FALSE;
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
}
out:
if (req) {
if (req->data)
ctlr->internal_req_busy = TW_CL_FALSE;
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
}
return(error);
}
