diff options
author | Dan Williams <dan.j.williams@intel.com> | 2011-05-12 18:46:59 +0400 |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 15:04:49 +0400 |
commit | 338e386d12c2440e39c987d35fda403d319a79a0 (patch) | |
tree | 912dec715b326319ed2631aa7dacad4e05d4a641 /drivers/scsi/isci/remote_node_context.c | |
parent | 6813820c7b892e1a5c2306808a5ccc8a27b7946d (diff) | |
download | linux-338e386d12c2440e39c987d35fda403d319a79a0.tar.xz |
isci: unify rnc event handlers
Unify rnc event handlers and delete the state handler.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/scsi/isci/remote_node_context.c')
-rw-r--r-- | drivers/scsi/isci/remote_node_context.c | 365 |
1 files changed, 108 insertions, 257 deletions
diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index aef258b959f8..9f2407f0f5a6 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -299,21 +299,6 @@ static enum sci_status scic_sds_remote_node_context_default_start_task_handler( return SCI_FAILURE; } -static enum sci_status scic_sds_remote_node_context_default_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p requested to process " - "event 0x%x while in wrong state %d\n", - __func__, - sci_rnc, - event_code, - sci_base_state_machine_get_state(&sci_rnc->state_machine)); - - return SCI_FAILURE_INVALID_STATE; -} - /** * * @sci_rnc: The rnc for which the task request is targeted. @@ -383,41 +368,6 @@ static enum sci_status scic_sds_remote_node_context_initial_state_resume_handler return SCI_FAILURE_INVALID_STATE; } -/* --------------------------------------------------------------------------- */ - -static enum sci_status scic_sds_remote_node_context_posting_state_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - enum sci_status status; - - switch (scu_get_event_code(event_code)) { - case SCU_EVENT_POST_RNC_COMPLETE: - status = SCI_SUCCESS; - - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE - ); - break; - - default: - status = SCI_FAILURE; - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p requested to " - "process unexpected event 0x%x while in posting " - "state\n", - __func__, - sci_rnc, - event_code); - break; - } - - return status; -} - -/* --------------------------------------------------------------------------- */ - static enum sci_status scic_sds_remote_node_context_invalidating_state_destruct_handler( struct scic_sds_remote_node_context *sci_rnc, scics_sds_remote_node_context_callback callback, @@ -430,110 +380,6 @@ static enum sci_status scic_sds_remote_node_context_invalidating_state_destruct_ return SCI_SUCCESS; } -static enum sci_status scic_sds_remote_node_context_invalidating_state_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - enum sci_status status; - - if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) { - status = SCI_SUCCESS; - - if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) { - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE - ); - } else { - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE - ); - } - } else { - switch (scu_get_event_type(event_code)) { - case SCU_EVENT_TYPE_RNC_SUSPEND_TX: - case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: - /* - * We really dont care if the hardware is going to suspend - * the device since it's being invalidated anyway */ - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p was " - "suspeneded by hardware while being " - "invalidated.\n", - __func__, - sci_rnc); - status = SCI_SUCCESS; - break; - - default: - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p " - "requested to process event 0x%x while " - "in state %d.\n", - __func__, - sci_rnc, - event_code, - sci_base_state_machine_get_state( - &sci_rnc->state_machine)); - status = SCI_FAILURE; - break; - } - } - - return status; -} - -/* --------------------------------------------------------------------------- */ - - -static enum sci_status scic_sds_remote_node_context_resuming_state_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - enum sci_status status; - - if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE) { - status = SCI_SUCCESS; - - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE - ); - } else { - switch (scu_get_event_type(event_code)) { - case SCU_EVENT_TYPE_RNC_SUSPEND_TX: - case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: - /* - * We really dont care if the hardware is going to suspend - * the device since it's being resumed anyway */ - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p was " - "suspeneded by hardware while being resumed.\n", - __func__, - sci_rnc); - status = SCI_SUCCESS; - break; - - default: - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p requested " - "to process event 0x%x while in state %d.\n", - __func__, - sci_rnc, - event_code, - sci_base_state_machine_get_state( - &sci_rnc->state_machine)); - status = SCI_FAILURE; - break; - } - } - - return status; -} - -/* --------------------------------------------------------------------------- */ - /** * * @sci_rnc: The remote node context object being suspended. @@ -582,53 +428,6 @@ static enum sci_status scic_sds_remote_node_context_ready_state_start_io_handler return SCI_SUCCESS; } - -static enum sci_status scic_sds_remote_node_context_ready_state_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - enum sci_status status; - - switch (scu_get_event_type(event_code)) { - case SCU_EVENT_TL_RNC_SUSPEND_TX: - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE - ); - - sci_rnc->suspension_code = scu_get_event_specifier(event_code); - status = SCI_SUCCESS; - break; - - case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE - ); - - sci_rnc->suspension_code = scu_get_event_specifier(event_code); - status = SCI_SUCCESS; - break; - - default: - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p requested to " - "process event 0x%x while in state %d.\n", - __func__, - sci_rnc, - event_code, - sci_base_state_machine_get_state( - &sci_rnc->state_machine)); - - status = SCI_FAILURE; - break; - } - - return status; -} - -/* --------------------------------------------------------------------------- */ - static enum sci_status scic_sds_remote_node_context_tx_suspended_state_resume_handler( struct scic_sds_remote_node_context *sci_rnc, scics_sds_remote_node_context_callback callback, @@ -738,61 +537,13 @@ static enum sci_status scic_sds_remote_node_context_await_suspension_state_start return SCI_SUCCESS; } -static enum sci_status scic_sds_remote_node_context_await_suspension_state_event_handler( - struct scic_sds_remote_node_context *sci_rnc, - u32 event_code) -{ - enum sci_status status; - - switch (scu_get_event_type(event_code)) { - case SCU_EVENT_TL_RNC_SUSPEND_TX: - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE - ); - - sci_rnc->suspension_code = scu_get_event_specifier(event_code); - status = SCI_SUCCESS; - break; - - case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: - sci_base_state_machine_change_state( - &sci_rnc->state_machine, - SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE - ); - - sci_rnc->suspension_code = scu_get_event_specifier(event_code); - status = SCI_SUCCESS; - break; - - default: - dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: SCIC Remote Node Context 0x%p requested to " - "process event 0x%x while in state %d.\n", - __func__, - sci_rnc, - event_code, - sci_base_state_machine_get_state( - &sci_rnc->state_machine)); - - status = SCI_FAILURE; - break; - } - - return status; -} - -/* --------------------------------------------------------------------------- */ - -static struct scic_sds_remote_node_context_handlers -scic_sds_remote_node_context_state_handler_table[] = { +static struct scic_sds_remote_node_context_handlers scic_sds_remote_node_context_state_handler_table[] = { [SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE] = { .destruct_handler = scic_sds_remote_node_context_default_destruct_handler, .suspend_handler = scic_sds_remote_node_context_default_suspend_handler, .resume_handler = scic_sds_remote_node_context_initial_state_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_default_start_task_handler, - .event_handler = scic_sds_remote_node_context_default_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -800,7 +551,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_continue_to_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_default_start_task_handler, - .event_handler = scic_sds_remote_node_context_posting_state_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE] = { .destruct_handler = scic_sds_remote_node_context_invalidating_state_destruct_handler, @@ -808,7 +558,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_continue_to_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_default_start_task_handler, - .event_handler = scic_sds_remote_node_context_invalidating_state_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -816,7 +565,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_continue_to_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_success_start_task_handler, - .event_handler = scic_sds_remote_node_context_resuming_state_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -824,7 +572,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_default_resume_handler, .start_io_handler = scic_sds_remote_node_context_ready_state_start_io_handler, .start_task_handler = scic_sds_remote_node_context_success_start_task_handler, - .event_handler = scic_sds_remote_node_context_ready_state_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -832,7 +579,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_tx_suspended_state_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_suspended_start_task_handler, - .event_handler = scic_sds_remote_node_context_default_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -840,7 +586,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_tx_rx_suspended_state_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_suspended_start_task_handler, - .event_handler = scic_sds_remote_node_context_default_event_handler }, [SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE] = { .destruct_handler = scic_sds_remote_node_context_general_destruct_handler, @@ -848,7 +593,6 @@ scic_sds_remote_node_context_state_handler_table[] = { .resume_handler = scic_sds_remote_node_context_await_suspension_state_resume_handler, .start_io_handler = scic_sds_remote_node_context_default_start_io_handler, .start_task_handler = scic_sds_remote_node_context_await_suspension_state_start_task_handler, - .event_handler = scic_sds_remote_node_context_await_suspension_state_event_handler } }; @@ -1172,3 +916,110 @@ void scic_sds_remote_node_context_construct(struct scic_sds_remote_node_context sci_base_state_machine_start(&rnc->state_machine); } + +enum sci_status scic_sds_remote_node_context_event_handler(struct scic_sds_remote_node_context *sci_rnc, + u32 event_code) +{ + enum scis_sds_remote_node_context_states state; + + state = sci_rnc->state_machine.current_state_id; + switch (state) { + case SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE: + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_POST_RNC_COMPLETE: + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE); + break; + default: + goto out; + } + break; + case SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE: + if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) { + if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) + state = SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE; + else + state = SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE; + sci_base_state_machine_change_state(&sci_rnc->state_machine, + state); + } else { + switch (scu_get_event_type(event_code)) { + case SCU_EVENT_TYPE_RNC_SUSPEND_TX: + case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: + /* We really dont care if the hardware is going to suspend + * the device since it's being invalidated anyway */ + dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: SCIC Remote Node Context 0x%p was " + "suspeneded by hardware while being " + "invalidated.\n", __func__, sci_rnc); + break; + default: + goto out; + } + } + break; + case SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE: + if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE) { + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE); + } else { + switch (scu_get_event_type(event_code)) { + case SCU_EVENT_TYPE_RNC_SUSPEND_TX: + case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: + /* We really dont care if the hardware is going to suspend + * the device since it's being resumed anyway */ + dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: SCIC Remote Node Context 0x%p was " + "suspeneded by hardware while being resumed.\n", + __func__, sci_rnc); + break; + default: + goto out; + } + } + break; + case SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE: + switch (scu_get_event_type(event_code)) { + case SCU_EVENT_TL_RNC_SUSPEND_TX: + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE); + sci_rnc->suspension_code = scu_get_event_specifier(event_code); + break; + case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE); + sci_rnc->suspension_code = scu_get_event_specifier(event_code); + break; + default: + goto out; + } + break; + case SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE: + switch (scu_get_event_type(event_code)) { + case SCU_EVENT_TL_RNC_SUSPEND_TX: + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE); + sci_rnc->suspension_code = scu_get_event_specifier(event_code); + break; + case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: + sci_base_state_machine_change_state(&sci_rnc->state_machine, + SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE); + sci_rnc->suspension_code = scu_get_event_specifier(event_code); + break; + default: + goto out; + } + break; + default: + dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: invalid state %d\n", __func__, state); + return SCI_FAILURE_INVALID_STATE; + } + return SCI_SUCCESS; + + out: + dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: code: %#x state: %d\n", __func__, event_code, state); + return SCI_FAILURE; + +} |