diff options
Diffstat (limited to 'drivers/scsi/isci/host.c')
| -rw-r--r-- | drivers/scsi/isci/host.c | 56 |
1 files changed, 13 insertions, 43 deletions
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 3c7042b8bc0e..ae9edae1d245 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -123,34 +123,6 @@ ) /** - * INCREMENT_COMPLETION_QUEUE_GET() - - * - * This macro will increment the controllers completion queue index value and - * possibly toggle the cycle bit if the completion queue index wraps back to 0. - */ -#define INCREMENT_COMPLETION_QUEUE_GET(controller, index, cycle) \ - INCREMENT_QUEUE_GET(\ - (index), \ - (cycle), \ - SCU_MAX_COMPLETION_QUEUE_ENTRIES, \ - SMU_CQGR_CYCLE_BIT) - -/** - * INCREMENT_EVENT_QUEUE_GET() - - * - * This macro will increment the controllers event queue index value and - * possibly toggle the event cycle bit if the event queue index wraps back to 0. - */ -#define INCREMENT_EVENT_QUEUE_GET(controller, index, cycle) \ - INCREMENT_QUEUE_GET(\ - (index), \ - (cycle), \ - SCU_MAX_EVENTS, \ - SMU_CQGR_EVENT_CYCLE_BIT \ - ) - - -/** * NORMALIZE_GET_POINTER() - * * This macro will normalize the completion queue get pointer so its value can @@ -528,15 +500,13 @@ static void scic_sds_controller_event_completion(struct scic_sds_controller *sci } } - - static void scic_sds_controller_process_completions(struct scic_sds_controller *scic) { u32 completion_count = 0; u32 completion_entry; u32 get_index; u32 get_cycle; - u32 event_index; + u32 event_get; u32 event_cycle; dev_dbg(scic_to_dev(scic), @@ -548,7 +518,7 @@ static void scic_sds_controller_process_completions(struct scic_sds_controller * get_index = NORMALIZE_GET_POINTER(scic->completion_queue_get); get_cycle = SMU_CQGR_CYCLE_BIT & scic->completion_queue_get; - event_index = NORMALIZE_EVENT_POINTER(scic->completion_queue_get); + event_get = NORMALIZE_EVENT_POINTER(scic->completion_queue_get); event_cycle = SMU_CQGR_EVENT_CYCLE_BIT & scic->completion_queue_get; while ( @@ -558,7 +528,11 @@ static void scic_sds_controller_process_completions(struct scic_sds_controller * completion_count++; completion_entry = scic->completion_queue[get_index]; - INCREMENT_COMPLETION_QUEUE_GET(scic, get_index, get_cycle); + + /* increment the get pointer and check for rollover to toggle the cycle bit */ + get_cycle ^= ((get_index+1) & SCU_MAX_COMPLETION_QUEUE_ENTRIES) << + (SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT - SCU_MAX_COMPLETION_QUEUE_SHIFT); + get_index = (get_index+1) & (SCU_MAX_COMPLETION_QUEUE_ENTRIES-1); dev_dbg(scic_to_dev(scic), "%s: completion queue entry:0x%08x\n", @@ -579,18 +553,14 @@ static void scic_sds_controller_process_completions(struct scic_sds_controller * break; case SCU_COMPLETION_TYPE_EVENT: - INCREMENT_EVENT_QUEUE_GET(scic, event_index, event_cycle); - scic_sds_controller_event_completion(scic, completion_entry); - break; + case SCU_COMPLETION_TYPE_NOTIFY: { + event_cycle ^= ((event_get+1) & SCU_MAX_EVENTS) << + (SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_SHIFT - SCU_MAX_EVENTS_SHIFT); + event_get = (event_get+1) & (SCU_MAX_EVENTS-1); - case SCU_COMPLETION_TYPE_NOTIFY: - /* - * Presently we do the same thing with a notify event that we do with the - * other event codes. */ - INCREMENT_EVENT_QUEUE_GET(scic, event_index, event_cycle); scic_sds_controller_event_completion(scic, completion_entry); break; - + } default: dev_warn(scic_to_dev(scic), "%s: SCIC Controller received unknown " @@ -607,7 +577,7 @@ static void scic_sds_controller_process_completions(struct scic_sds_controller * SMU_CQGR_GEN_BIT(ENABLE) | SMU_CQGR_GEN_BIT(EVENT_ENABLE) | event_cycle | - SMU_CQGR_GEN_VAL(EVENT_POINTER, event_index) | + SMU_CQGR_GEN_VAL(EVENT_POINTER, event_get) | get_cycle | SMU_CQGR_GEN_VAL(POINTER, get_index); |