summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/isci/remote_node_context.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/isci/remote_node_context.h')
-rw-r--r--drivers/scsi/isci/remote_node_context.h43
1 files changed, 33 insertions, 10 deletions
diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h
index a241e0f4c86..a703b9ce0c2 100644
--- a/drivers/scsi/isci/remote_node_context.h
+++ b/drivers/scsi/isci/remote_node_context.h
@@ -75,8 +75,13 @@
*/
#define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX 0x0FFF
-#define SCU_HARDWARE_SUSPENSION (0)
-#define SCI_SOFTWARE_SUSPENSION (1)
+enum sci_remote_node_suspension_reasons {
+ SCI_HW_SUSPEND,
+ SCI_SW_SUSPEND_NORMAL,
+ SCI_SW_SUSPEND_LINKHANG_DETECT
+};
+#define SCI_SOFTWARE_SUSPEND_CMD SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX
+#define SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT SCU_EVENT_TL_RNC_SUSPEND_TX_RX
struct isci_request;
struct isci_remote_device;
@@ -137,9 +142,13 @@ const char *rnc_state_name(enum scis_sds_remote_node_context_states state);
* node context.
*/
enum sci_remote_node_context_destination_state {
- SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED,
- SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY,
- SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
+ RNC_DEST_UNSPECIFIED,
+ RNC_DEST_READY,
+ RNC_DEST_FINAL,
+ RNC_DEST_SUSPENDED, /* Set when suspend during post/invalidate */
+ RNC_DEST_SUSPENDED_RESUME /* Set when a resume was done during posting
+ * or invalidating and already suspending.
+ */
};
/**
@@ -156,10 +165,12 @@ struct sci_remote_node_context {
u16 remote_node_index;
/**
- * This field is the recored suspension code or the reason for the remote node
+ * This field is the recored suspension type of the remote node
* context suspension.
*/
- u32 suspension_code;
+ u32 suspend_type;
+ enum sci_remote_node_suspension_reasons suspend_reason;
+ u32 suspend_count;
/**
* This field is true if the remote node context is resuming from its current
@@ -193,6 +204,8 @@ void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
bool sci_remote_node_context_is_ready(
struct sci_remote_node_context *sci_rnc);
+bool sci_remote_node_context_is_suspended(struct sci_remote_node_context *sci_rnc);
+
enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
u32 event_code);
enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc,
@@ -200,14 +213,24 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context
void *callback_parameter);
enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc,
u32 suspend_type,
- scics_sds_remote_node_context_callback cb_fn,
- void *cb_p);
+ u32 suspension_code);
enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
scics_sds_remote_node_context_callback cb_fn,
void *cb_p);
enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
- struct isci_request *ireq);
+ struct isci_request *ireq,
+ scics_sds_remote_node_context_callback cb_fn,
+ void *cb_p);
enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc,
struct isci_request *ireq);
+int sci_remote_node_context_is_safe_to_abort(
+ struct sci_remote_node_context *sci_rnc);
+static inline bool sci_remote_node_context_is_being_destroyed(
+ struct sci_remote_node_context *sci_rnc)
+{
+ return (sci_rnc->destination_state == RNC_DEST_FINAL)
+ || ((sci_rnc->sm.current_state_id == SCI_RNC_INITIAL)
+ && (sci_rnc->destination_state == RNC_DEST_UNSPECIFIED));
+}
#endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */