/*
* Function name: tw_cli_aen_callback
* Description: Callback for requests to fetch AEN's.
*
* Input: req -- ptr to completed request pkt
* Output: None
* Return value: None
*/
TW_VOID
tw_cli_aen_callback(struct tw_cli_req_context *req)
{
struct tw_cli_ctlr_context *ctlr = req->ctlr;
struct tw_cl_command_header *cmd_hdr;
struct tw_cl_command_9k *cmd =
&(req->cmd_pkt->command.cmd_pkt_9k);
TW_UINT16 aen_code = TWA_AEN_QUEUE_EMPTY;
TW_INT32 error;
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(),
"req_id = 0x%x, req error = %d, status = 0x%x",
GET_REQ_ID(cmd->lun_l4__req_id), req->error_code, cmd->status);
/*
* If the request was never submitted to the controller, the function
* that sets error is responsible for calling tw_cl_create_event.
*/
if (!(error = req->error_code))
if ((error = cmd->status)) {
cmd_hdr = (struct tw_cl_command_header *)
(&(req->cmd_pkt->cmd_hdr));
tw_cli_create_ctlr_event(ctlr,
TW_CL_MESSAGE_SOURCE_CONTROLLER_ERROR,
cmd_hdr);
tw_cl_create_event(ctlr->ctlr_handle, TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
0x1206, 0x1, TW_CL_SEVERITY_ERROR_STRING,
"Request Sense failed",
"opcode = 0x%x, status = %d",
GET_OPCODE(cmd->res__opcode), cmd->status);
}
if (error) {
ctlr->internal_req_busy = TW_CL_FALSE;
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
return;
}
tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(),
"Request Sense command succeeded");
aen_code = tw_cli_manage_aen(ctlr, req);
if (aen_code != TWA_AEN_SYNC_TIME_WITH_HOST) {
ctlr->internal_req_busy = TW_CL_FALSE;
tw_cli_req_q_insert_tail(req, TW_CLI_FREE_Q);
if (aen_code != TWA_AEN_QUEUE_EMPTY)
if ((error = tw_cli_get_aen(ctlr)))
tw_cl_create_event(ctlr->ctlr_handle,
TW_CL_FALSE,
TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
0x1207, 0x1,
TW_CL_SEVERITY_ERROR_STRING,
"Failed to fetch all AEN's",
"error = %d", error);
}
}
/*
* 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);
}