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Commit eb229671 authored by Dan Williams's avatar Dan Williams
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isci: unify remote_device start_handlers 

Implement all states in scic_remote_device_start() and delete the state
handler.
Reported-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent f619fffb
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Showing with 21 additions and 62 deletions
drivers/scsi/isci/remote_device.c
View file @ eb229671
......@@ -291,7 +291,7 @@ static void scic_sds_cb_remote_device_rnc_destruct_complete(void *_dev)
* ready state. This is the indication that the remote device object can also
* transition to ready.
*/
static void scic_sds_remote_device_resume_complete_handler(void *_dev)
static void remote_device_resume_done(void *_dev)
{
struct scic_sds_remote_device *sci_dev = _dev;
enum scic_sds_remote_device_states state;
......@@ -409,12 +409,6 @@ default_device_handler(struct scic_sds_remote_device *sci_dev,
return SCI_FAILURE_INVALID_STATE;
}
static enum sci_status scic_sds_remote_device_default_start_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
static enum sci_status scic_sds_remote_device_default_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
......@@ -652,38 +646,6 @@ static enum sci_status scic_sds_remote_device_general_event_handler(
true);
}
/*
* *****************************************************************************
* * STOPPED STATE HANDLERS
* ***************************************************************************** */
/**
*
* @device:
*
* This method takes the struct scic_sds_remote_device from a stopped state and
* attempts to start it. The RNC buffer for the device is constructed and the
* device state machine is transitioned to the
* SCIC_BASE_REMOTE_DEVICE_STATE_STARTING. enum sci_status SCI_SUCCESS if there is
* an RNC buffer available to construct the remote device.
* SCI_FAILURE_INSUFFICIENT_RESOURCES if there is no RNC buffer available in
* which to construct the remote device.
*/
static enum sci_status scic_sds_remote_device_stopped_state_start_handler(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status;
status = scic_sds_remote_node_context_resume(&sci_dev->rnc,
scic_sds_remote_device_resume_complete_handler, sci_dev);
if (status == SCI_SUCCESS)
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
return status;
}
static enum sci_status scic_sds_remote_device_stopped_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
......@@ -1373,7 +1335,6 @@ static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_frame_handl
static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1390,7 +1351,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
.start_handler = scic_sds_remote_device_stopped_state_start_handler,
.stop_handler = scic_sds_remote_device_stopped_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_stopped_state_destruct_handler,
......@@ -1407,7 +1367,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_starting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1424,7 +1383,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1441,7 +1399,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler,
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1458,7 +1415,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1475,7 +1431,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1492,7 +1447,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1509,7 +1463,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1526,7 +1479,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1543,7 +1495,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1560,7 +1511,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_stopping_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1577,7 +1527,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1594,7 +1543,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_resetting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -1611,7 +1559,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
......@@ -2131,7 +2078,25 @@ static enum sci_status scic_remote_device_ea_construct(struct scic_sds_port *sci
static enum sci_status scic_remote_device_start(struct scic_sds_remote_device *sci_dev,
u32 timeout)
{
return sci_dev->state_handlers->start_handler(sci_dev);
struct sci_base_state_machine *sm = &sci_dev->state_machine;
enum scic_sds_remote_device_states state = sm->current_state_id;
enum sci_status status;
if (state != SCI_BASE_REMOTE_DEVICE_STATE_STOPPED) {
dev_warn(scirdev_to_dev(sci_dev), "%s: in wrong state: %d\n",
__func__, state);
return SCI_FAILURE_INVALID_STATE;
}
status = scic_sds_remote_node_context_resume(&sci_dev->rnc,
remote_device_resume_done,
sci_dev);
if (status != SCI_SUCCESS)
return status;
sci_base_state_machine_change_state(sm, SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
return SCI_SUCCESS;
}
static enum sci_status isci_remote_device_construct(struct isci_port *iport,
......
drivers/scsi/isci/remote_device.h
View file @ eb229671
......@@ -386,12 +386,6 @@ typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
*
*/
struct scic_sds_remote_device_state_handler {
/**
* The start_handler specifies the method invoked when a user
* attempts to start a remote device.
*/
scic_sds_remote_device_handler_t start_handler;
/**
* The stop_handler specifies the method invoked when a user attempts to
* stop a remote device.
......
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