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_cli_process_resp_intr
* Description: Looks for cmd completions from fw; queues cmds completed
* by fw into complete queue.
*
* Input: ctlr -- ptr to CL internal ctlr context
* Output: None
* Return value: 0 -- no ctlr error
* non-zero-- ctlr error
*/
TW_INT32
tw_cli_process_resp_intr(struct tw_cli_ctlr_context *ctlr)
{
TW_UINT32 resp;
struct tw_cli_req_context *req;
TW_INT32 error;
TW_UINT32 status_reg;
tw_cli_dbg_printf(10, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
for (;;) {
status_reg = TW_CLI_READ_STATUS_REGISTER(ctlr->ctlr_handle);
if ((error = tw_cli_check_ctlr_state(ctlr, status_reg)))
break;
if (status_reg & TWA_STATUS_RESPONSE_QUEUE_EMPTY) {
tw_cli_dbg_printf(7, ctlr->ctlr_handle,
tw_osl_cur_func(), "Response queue empty");
break;
}
/* Response queue is not empty. */
resp = TW_CLI_READ_RESPONSE_QUEUE(ctlr->ctlr_handle);
{
req = &(ctlr->req_ctxt_buf[GET_RESP_ID(resp)]);
}
if (req->state != TW_CLI_REQ_STATE_BUSY) {
tw_cl_create_event(ctlr->ctlr_handle, TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
0x1201, 0x1, TW_CL_SEVERITY_ERROR_STRING,
"Unposted command completed!!",
"request = %p, status = %d",
req, req->state);
#ifdef TW_OSL_DEBUG
tw_cl_print_ctlr_stats(ctlr->ctlr_handle);
#endif /* TW_OSL_DEBUG */
tw_cl_reset_ctlr(ctlr->ctlr_handle);
return(TW_OSL_EIO);
}
/*
* Remove the request from the busy queue, mark it as complete,
* and enqueue it in the complete queue.
*/
tw_cli_req_q_remove_item(req, TW_CLI_BUSY_Q);
req->state = TW_CLI_REQ_STATE_COMPLETE;
tw_cli_req_q_insert_tail(req, TW_CLI_COMPLETE_Q);
}
/* Complete this, and other requests in the complete queue. */
tw_cli_process_complete_queue(ctlr);
return(error);
}
/*
* Function name: tw_cli_complete_io
* Description: CL internal callback for SCSI/fw passthru requests.
*
* Input: req -- ptr to CL internal request context
* Output: None
* Return value: None
*/
TW_VOID
tw_cli_complete_io(struct tw_cli_req_context *req)
{
struct tw_cli_ctlr_context *ctlr = req->ctlr;
struct tw_cl_req_packet *req_pkt =
(struct tw_cl_req_packet *)(req->orig_req);
tw_cli_dbg_printf(8, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
req_pkt->status = TW_CL_ERR_REQ_SUCCESS;
if (req->error_code) {
req_pkt->status = TW_CL_ERR_REQ_UNABLE_TO_SUBMIT_COMMAND;
goto out;
}
if (req->state != TW_CLI_REQ_STATE_COMPLETE) {
tw_cl_create_event(ctlr->ctlr_handle, TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
0x1203, 0x1, TW_CL_SEVERITY_ERROR_STRING,
"I/O completion on incomplete command!!",
"request = %p, status = %d",
req, req->state);
#ifdef TW_OSL_DEBUG
tw_cl_print_ctlr_stats(ctlr->ctlr_handle);
#endif /* TW_OSL_DEBUG */
tw_cl_reset_ctlr(ctlr->ctlr_handle);
req_pkt->status = TW_CL_ERR_REQ_BUS_RESET;
goto out;
}
if (req->flags & TW_CLI_REQ_FLAGS_PASSTHRU) {
/* Copy the command packet back into OSL's space. */
tw_osl_memcpy(req_pkt->gen_req_pkt.pt_req.cmd_pkt, req->cmd_pkt,
sizeof(struct tw_cl_command_packet));
} else
tw_cli_scsi_complete(req);
out:
req_pkt->tw_osl_callback(req->req_handle);
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
}
/*
* 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);
}
