diff options
Diffstat (limited to 'drivers/scsi/isci/request.c')
| -rw-r--r-- | drivers/scsi/isci/request.c | 149 |
1 files changed, 138 insertions, 11 deletions
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index dcd26eadf867..605dc68cbf79 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2116,9 +2116,6 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq * completion. */ if (ireq->stp.rsp.fis_type == FIS_REGD2H) { - sci_remote_device_suspend(ireq->target_device, - SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code))); - ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE; ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID; sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); @@ -2138,13 +2135,6 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq /* TODO We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR * - this comes only for B0 */ - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR): - sci_remote_device_suspend(ireq->target_device, - SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code))); - /* Fall through to the default case */ default: /* All other completion status cause the IO to be complete. */ ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code); @@ -2262,15 +2252,152 @@ static enum sci_status atapi_data_tc_completion_handler(struct isci_request *ire return status; } +static int sci_request_smp_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + return 1; + } + return 0; +} + +static int sci_request_smp_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + return 0; /* There are no Tx/Rx SMP suspend conditions. */ +} + +static int sci_request_ssp_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_TX_RAW_CMD_ERR: + case SCU_TASK_DONE_LF_ERR: + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY: + case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED: + case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED: + return 1; + } + return 0; +} + +static int sci_request_ssp_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + return 0; /* There are no Tx/Rx SSP suspend conditions. */ +} + +static int sci_request_stpsata_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_TX_RAW_CMD_ERR: + case SCU_TASK_DONE_LL_R_ERR: + case SCU_TASK_DONE_LL_PERR: + case SCU_TASK_DONE_REG_ERR: + case SCU_TASK_DONE_SDB_ERR: + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY: + case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED: + case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED: + return 1; + } + return 0; +} + + +static int sci_request_stpsata_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_LF_ERR: + case SCU_TASK_DONE_LL_SY_TERM: + case SCU_TASK_DONE_LL_LF_TERM: + case SCU_TASK_DONE_BREAK_RCVD: + case SCU_TASK_DONE_INV_FIS_LEN: + case SCU_TASK_DONE_UNEXP_FIS: + case SCU_TASK_DONE_UNEXP_SDBFIS: + case SCU_TASK_DONE_MAX_PLD_ERR: + return 1; + } + return 0; +} + +static void sci_request_handle_suspending_completions( + struct isci_request *ireq, + u32 completion_code) +{ + int is_tx = 0; + int is_tx_rx = 0; + + switch (ireq->protocol) { + case SAS_PROTOCOL_SMP: + is_tx = sci_request_smp_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = sci_request_smp_completion_status_is_tx_rx_suspend( + completion_code); + break; + case SAS_PROTOCOL_SSP: + is_tx = sci_request_ssp_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = sci_request_ssp_completion_status_is_tx_rx_suspend( + completion_code); + break; + case SAS_PROTOCOL_STP: + is_tx = sci_request_stpsata_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = + sci_request_stpsata_completion_status_is_tx_rx_suspend( + completion_code); + break; + default: + dev_warn(&ireq->isci_host->pdev->dev, + "%s: request %p has no valid protocol\n", + __func__, ireq); + break; + } + if (is_tx || is_tx_rx) { + BUG_ON(is_tx && is_tx_rx); + + sci_remote_node_context_suspend( + &ireq->target_device->rnc, + SCU_HARDWARE_SUSPENSION, + (is_tx_rx) ? SCU_EVENT_TL_RNC_SUSPEND_TX_RX + : SCU_EVENT_TL_RNC_SUSPEND_TX, + NULL, NULL); + } +} + enum sci_status sci_io_request_tc_completion(struct isci_request *ireq, - u32 completion_code) + u32 completion_code) { enum sci_base_request_states state; struct isci_host *ihost = ireq->owning_controller; state = ireq->sm.current_state_id; + /* Decode those completions that signal upcoming suspension events. */ + sci_request_handle_suspending_completions( + ireq, SCU_GET_COMPLETION_TL_STATUS(completion_code)); + switch (state) { case SCI_REQ_STARTED: return request_started_state_tc_event(ireq, completion_code); |