isci: additional state machine cleanup
Additional state machine cleanups:
o Remove static functions sci_state_machine_exit_state() and
sci_state_machine_enter_state()
o Combines sci_base_state_machine_construct() and
sci_base_state_machine_start() into a single function,
sci_init_sm()
o Remove sci_base_state_machine_stop() which is unused.
o Kill state_machine.[ch]
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
[fixed too large to inline functions]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
index 2fe5557..80cfb45 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 @@
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__ */