diff options
Diffstat (limited to 'drivers/scsi/isci/host.c')
| -rw-r--r-- | drivers/scsi/isci/host.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 81ee64c0a4b7..f502882a2e17 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -197,6 +197,39 @@ */ #define COMPLETION_QUEUE_CYCLE_BIT(x) ((x) & 0x80000000) +/* Init the state machine and call the state entry function (if any) */ +void sci_init_sm(struct sci_base_state_machine *sm, + const struct sci_base_state *state_table, u32 initial_state) +{ + sci_state_transition_t handler; + + sm->initial_state_id = initial_state; + sm->previous_state_id = initial_state; + sm->current_state_id = initial_state; + sm->state_table = state_table; + + handler = sm->state_table[initial_state].enter_state; + if (handler) + handler(sm); +} + +/* Call the state exit fn, update the current state, call the state entry fn */ +void sci_change_state(struct sci_base_state_machine *sm, u32 next_state) +{ + sci_state_transition_t handler; + + handler = sm->state_table[sm->current_state_id].exit_state; + if (handler) + handler(sm); + + sm->previous_state_id = sm->current_state_id; + sm->current_state_id = next_state; + + handler = sm->state_table[sm->current_state_id].enter_state; + if (handler) + handler(sm); +} + static bool scic_sds_controller_completion_queue_has_entries( struct scic_sds_controller *scic) { @@ -1807,11 +1840,7 @@ static enum sci_status scic_controller_construct(struct scic_sds_controller *sci struct isci_host *ihost = scic_to_ihost(scic); u8 i; - sci_base_state_machine_construct(&scic->sm, - scic_sds_controller_state_table, - SCIC_INITIAL); - - sci_base_state_machine_start(&scic->sm); + sci_init_sm(&scic->sm, scic_sds_controller_state_table, SCIC_INITIAL); scic->scu_registers = scu_base; scic->smu_registers = smu_base; |