diff options
Diffstat (limited to 'drivers/scsi/isci/isci.h')
| -rw-r--r-- | drivers/scsi/isci/isci.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 2fe5557d8590..80cfb45f8da1 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -57,6 +57,7 @@ #define __ISCI_H__ #include <linux/interrupt.h> +#include <linux/types.h> #define DRV_NAME "isci" #define SCI_PCI_BAR_COUNT 2 @@ -584,4 +585,22 @@ static inline void sci_del_timer(struct sci_timer *tmr) del_timer(&tmr->timer); } +struct sci_base_state_machine { + const struct sci_base_state *state_table; + u32 initial_state_id; + u32 current_state_id; + u32 previous_state_id; +}; + +typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm); + +struct sci_base_state { + sci_state_transition_t enter_state; /* Called on state entry */ + sci_state_transition_t exit_state; /* Called on state exit */ +}; + +extern void sci_init_sm(struct sci_base_state_machine *sm, + const struct sci_base_state *state_table, + u32 initial_state); +extern void sci_change_state(struct sci_base_state_machine *sm, u32 next_state); #endif /* __ISCI_H__ */ |