* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-
+#include <scsi/sas_ata.h>
#include "host.h"
#include "isci.h"
#include "remote_device.h"
return false;
}
+bool sci_remote_node_context_is_suspended(struct sci_remote_node_context *sci_rnc)
+{
+ u32 current_state = sci_rnc->sm.current_state_id;
+
+ if (current_state == SCI_RNC_TX_RX_SUSPENDED)
+ return true;
+ return false;
+}
+
static union scu_remote_node_context *sci_rnc_by_id(struct isci_host *ihost, u16 id)
{
if (id < ihost->remote_node_entries &&
rnc->ssp.arbitration_wait_time = 0;
- if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+ if (dev_is_sata(dev)) {
rnc->ssp.connection_occupancy_timeout =
ihost->user_parameters.stp_max_occupancy_timeout;
rnc->ssp.connection_inactivity_timeout =
rnc->ssp.oaf_source_zone_group = 0;
rnc->ssp.oaf_more_compatibility_features = 0;
}
-
/**
*
* @sci_rnc:
static void sci_remote_node_context_setup_to_resume(
struct sci_remote_node_context *sci_rnc,
scics_sds_remote_node_context_callback callback,
- void *callback_parameter)
+ void *callback_parameter,
+ enum sci_remote_node_context_destination_state dest_param)
{
- if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) {
- sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY;
- sci_rnc->user_callback = callback;
- sci_rnc->user_cookie = callback_parameter;
+ if (sci_rnc->destination_state != RNC_DEST_FINAL) {
+ sci_rnc->destination_state = dest_param;
+ if (callback != NULL) {
+ sci_rnc->user_callback = callback;
+ sci_rnc->user_cookie = callback_parameter;
+ }
}
}
-static void sci_remote_node_context_setup_to_destory(
+static void sci_remote_node_context_setup_to_destroy(
struct sci_remote_node_context *sci_rnc,
scics_sds_remote_node_context_callback callback,
void *callback_parameter)
{
- sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL;
+ struct isci_host *ihost = idev_to_ihost(rnc_to_dev(sci_rnc));
+
+ sci_rnc->destination_state = RNC_DEST_FINAL;
sci_rnc->user_callback = callback;
sci_rnc->user_cookie = callback_parameter;
+
+ wake_up(&ihost->eventq);
}
/**
static void sci_remote_node_context_continue_state_transitions(struct sci_remote_node_context *rnc)
{
- if (rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY)
+ switch (rnc->destination_state) {
+ case RNC_DEST_READY:
+ case RNC_DEST_SUSPENDED_RESUME:
+ rnc->destination_state = RNC_DEST_READY;
+ /* Fall through... */
+ case RNC_DEST_FINAL:
sci_remote_node_context_resume(rnc, rnc->user_callback,
- rnc->user_cookie);
+ rnc->user_cookie);
+ break;
+ default:
+ rnc->destination_state = RNC_DEST_UNSPECIFIED;
+ break;
+ }
}
static void sci_remote_node_context_validate_context_buffer(struct sci_remote_node_context *sci_rnc)
rnc_buffer->ssp.is_valid = true;
- if (!idev->is_direct_attached &&
- (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))) {
+ if (dev_is_sata(dev) && dev->parent) {
sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_96);
} else {
sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_32);
- if (idev->is_direct_attached)
+ if (!dev->parent)
sci_port_setup_transports(idev->owning_port,
sci_rnc->remote_node_index);
}
static void sci_remote_node_context_initial_state_enter(struct sci_base_state_machine *sm)
{
struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+ struct isci_remote_device *idev = rnc_to_dev(rnc);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
/* Check to see if we have gotten back to the initial state because
* someone requested to destroy the remote node context object.
*/
if (sm->previous_state_id == SCI_RNC_INVALIDATING) {
- rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+ rnc->destination_state = RNC_DEST_UNSPECIFIED;
sci_remote_node_context_notify_user(rnc);
+
+ smp_wmb();
+ wake_up(&ihost->eventq);
}
}
{
struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+ /* Terminate all outstanding requests. */
+ sci_remote_device_terminate_requests(rnc_to_dev(rnc));
sci_remote_node_context_invalidate_context_buffer(rnc);
}
* resume because of a target reset we also need to update
* the STPTLDARNI register with the RNi of the device
*/
- if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) &&
- idev->is_direct_attached)
- sci_port_setup_transports(idev->owning_port,
- rnc->remote_node_index);
+ if (dev_is_sata(dev) && !dev->parent)
+ sci_port_setup_transports(idev->owning_port, rnc->remote_node_index);
sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_RESUME);
}
static void sci_remote_node_context_ready_state_enter(struct sci_base_state_machine *sm)
{
struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+ enum sci_remote_node_context_destination_state dest_select;
+ int tell_user = 1;
+
+ dest_select = rnc->destination_state;
+ rnc->destination_state = RNC_DEST_UNSPECIFIED;
- rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+ if ((dest_select == RNC_DEST_SUSPENDED) ||
+ (dest_select == RNC_DEST_SUSPENDED_RESUME)) {
+ sci_remote_node_context_suspend(
+ rnc, rnc->suspend_reason,
+ SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT);
- if (rnc->user_callback)
+ if (dest_select == RNC_DEST_SUSPENDED_RESUME)
+ tell_user = 0; /* Wait until ready again. */
+ }
+ if (tell_user)
sci_remote_node_context_notify_user(rnc);
}
static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_state_machine *sm)
{
struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+ struct isci_remote_device *idev = rnc_to_dev(rnc);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
+ u32 new_count = rnc->suspend_count + 1;
+
+ if (new_count == 0)
+ rnc->suspend_count = 1;
+ else
+ rnc->suspend_count = new_count;
+ smp_wmb();
+ /* Terminate outstanding requests pending abort. */
+ sci_remote_device_abort_requests_pending_abort(idev);
+
+ wake_up(&ihost->eventq);
sci_remote_node_context_continue_state_transitions(rnc);
}
+static void sci_remote_node_context_await_suspend_state_exit(
+ struct sci_base_state_machine *sm)
+{
+ struct sci_remote_node_context *rnc
+ = container_of(sm, typeof(*rnc), sm);
+ struct isci_remote_device *idev = rnc_to_dev(rnc);
+
+ if (dev_is_sata(idev->domain_dev))
+ isci_dev_set_hang_detection_timeout(idev, 0);
+}
+
static const struct sci_base_state sci_remote_node_context_state_table[] = {
[SCI_RNC_INITIAL] = {
.enter_state = sci_remote_node_context_initial_state_enter,
[SCI_RNC_TX_RX_SUSPENDED] = {
.enter_state = sci_remote_node_context_tx_rx_suspended_state_enter,
},
- [SCI_RNC_AWAIT_SUSPENSION] = { },
+ [SCI_RNC_AWAIT_SUSPENSION] = {
+ .exit_state = sci_remote_node_context_await_suspend_state_exit,
+ },
};
void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
memset(rnc, 0, sizeof(struct sci_remote_node_context));
rnc->remote_node_index = remote_node_index;
- rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+ rnc->destination_state = RNC_DEST_UNSPECIFIED;
sci_init_sm(&rnc->sm, sci_remote_node_context_state_table, SCI_RNC_INITIAL);
}
u32 event_code)
{
enum scis_sds_remote_node_context_states state;
+ u32 next_state;
state = sci_rnc->sm.current_state_id;
switch (state) {
break;
case SCI_RNC_INVALIDATING:
if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) {
- if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL)
- state = SCI_RNC_INITIAL;
+ if (sci_rnc->destination_state == RNC_DEST_FINAL)
+ next_state = SCI_RNC_INITIAL;
else
- state = SCI_RNC_POSTING;
- sci_change_state(&sci_rnc->sm, state);
+ next_state = SCI_RNC_POSTING;
+ sci_change_state(&sci_rnc->sm, next_state);
} else {
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
/* We really dont care if the hardware is going to suspend
* the device since it's being invalidated anyway */
- dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+ dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: SCIC Remote Node Context 0x%p was "
"suspeneded by hardware while being "
"invalidated.\n", __func__, sci_rnc);
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
/* We really dont care if the hardware is going to suspend
* the device since it's being resumed anyway */
- dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+ dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: SCIC Remote Node Context 0x%p was "
"suspeneded by hardware while being resumed.\n",
__func__, sci_rnc);
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TL_RNC_SUSPEND_TX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
- sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+ sci_rnc->suspend_type = scu_get_event_type(event_code);
break;
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
- sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+ sci_rnc->suspend_type = scu_get_event_type(event_code);
break;
default:
goto out;
case SCI_RNC_AWAIT_SUSPENSION:
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TL_RNC_SUSPEND_TX:
- sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
- sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+ next_state = SCI_RNC_TX_SUSPENDED;
break;
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
- sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
- sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+ next_state = SCI_RNC_TX_RX_SUSPENDED;
break;
default:
goto out;
}
+ if (sci_rnc->suspend_type == scu_get_event_type(event_code))
+ sci_change_state(&sci_rnc->sm, next_state);
break;
default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state: %s\n", __func__,
+ rnc_state_name(state));
return SCI_FAILURE_INVALID_STATE;
}
return SCI_SUCCESS;
out:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: code: %#x state: %d\n", __func__, event_code, state);
+ "%s: code: %#x state: %s\n", __func__, event_code,
+ rnc_state_name(state));
return SCI_FAILURE;
}
state = sci_rnc->sm.current_state_id;
switch (state) {
case SCI_RNC_INVALIDATING:
- sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p);
+ sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p);
return SCI_SUCCESS;
case SCI_RNC_POSTING:
case SCI_RNC_RESUMING:
case SCI_RNC_READY:
case SCI_RNC_TX_SUSPENDED:
case SCI_RNC_TX_RX_SUSPENDED:
- case SCI_RNC_AWAIT_SUSPENSION:
- sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p);
+ sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p);
sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING);
return SCI_SUCCESS;
+ case SCI_RNC_AWAIT_SUSPENSION:
+ sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p);
+ return SCI_SUCCESS;
case SCI_RNC_INITIAL:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state: %s\n", __func__,
+ rnc_state_name(state));
/* We have decided that the destruct request on the remote node context
* can not fail since it is either in the initial/destroyed state or is
* can be destroyed.
return SCI_SUCCESS;
default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state %s\n", __func__,
+ rnc_state_name(state));
return SCI_FAILURE_INVALID_STATE;
}
}
-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)
+enum sci_status sci_remote_node_context_suspend(
+ struct sci_remote_node_context *sci_rnc,
+ enum sci_remote_node_suspension_reasons suspend_reason,
+ u32 suspend_type)
{
- enum scis_sds_remote_node_context_states state;
+ enum scis_sds_remote_node_context_states state
+ = sci_rnc->sm.current_state_id;
+ struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+ enum sci_remote_node_context_destination_state dest_param =
+ RNC_DEST_UNSPECIFIED;
+
+ dev_dbg(scirdev_to_dev(idev),
+ "%s: current state %s, current suspend_type %x dest state %d,"
+ " arg suspend_reason %d, arg suspend_type %x",
+ __func__, rnc_state_name(state), sci_rnc->suspend_type,
+ sci_rnc->destination_state, suspend_reason,
+ suspend_type);
+
+ /* Disable automatic state continuations if explicitly suspending. */
+ if ((suspend_reason == SCI_HW_SUSPEND) ||
+ (sci_rnc->destination_state == RNC_DEST_FINAL))
+ dest_param = sci_rnc->destination_state;
- state = sci_rnc->sm.current_state_id;
- if (state != SCI_RNC_READY) {
+ switch (state) {
+ case SCI_RNC_READY:
+ break;
+ case SCI_RNC_INVALIDATING:
+ if (sci_rnc->destination_state == RNC_DEST_FINAL) {
+ dev_warn(scirdev_to_dev(idev),
+ "%s: already destroying %p\n",
+ __func__, sci_rnc);
+ return SCI_FAILURE_INVALID_STATE;
+ }
+ /* Fall through and handle like SCI_RNC_POSTING */
+ case SCI_RNC_RESUMING:
+ /* Fall through and handle like SCI_RNC_POSTING */
+ case SCI_RNC_POSTING:
+ /* Set the destination state to AWAIT - this signals the
+ * entry into the SCI_RNC_READY state that a suspension
+ * needs to be done immediately.
+ */
+ if (sci_rnc->destination_state != RNC_DEST_FINAL)
+ sci_rnc->destination_state = RNC_DEST_SUSPENDED;
+ sci_rnc->suspend_type = suspend_type;
+ sci_rnc->suspend_reason = suspend_reason;
+ return SCI_SUCCESS;
+
+ case SCI_RNC_TX_SUSPENDED:
+ if (suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX)
+ status = SCI_SUCCESS;
+ break;
+ case SCI_RNC_TX_RX_SUSPENDED:
+ if (suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX_RX)
+ status = SCI_SUCCESS;
+ break;
+ case SCI_RNC_AWAIT_SUSPENSION:
+ if ((sci_rnc->suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX_RX)
+ || (suspend_type == sci_rnc->suspend_type))
+ return SCI_SUCCESS;
+ break;
+ default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state %s\n", __func__,
+ rnc_state_name(state));
return SCI_FAILURE_INVALID_STATE;
}
+ sci_rnc->destination_state = dest_param;
+ sci_rnc->suspend_type = suspend_type;
+ sci_rnc->suspend_reason = suspend_reason;
+
+ if (status == SCI_SUCCESS) { /* Already in the destination state? */
+ struct isci_host *ihost = idev->owning_port->owning_controller;
+
+ wake_up_all(&ihost->eventq); /* Let observers look. */
+ return SCI_SUCCESS;
+ }
+ if ((suspend_reason == SCI_SW_SUSPEND_NORMAL) ||
+ (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT)) {
- sci_rnc->user_callback = cb_fn;
- sci_rnc->user_cookie = cb_p;
- sci_rnc->suspension_code = suspend_type;
+ if (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT)
+ isci_dev_set_hang_detection_timeout(idev, 0x00000001);
- if (suspend_type == SCI_SOFTWARE_SUSPENSION) {
- sci_remote_device_post_request(rnc_to_dev(sci_rnc),
- SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX);
+ sci_remote_device_post_request(
+ idev, SCI_SOFTWARE_SUSPEND_CMD);
}
+ if (state != SCI_RNC_AWAIT_SUSPENSION)
+ sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION);
- sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION);
return SCI_SUCCESS;
}
void *cb_p)
{
enum scis_sds_remote_node_context_states state;
+ struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
state = sci_rnc->sm.current_state_id;
+ dev_dbg(scirdev_to_dev(idev),
+ "%s: state %s, cb_fn = %p, cb_p = %p; dest_state = %d; "
+ "dev resume path %s\n",
+ __func__, rnc_state_name(state), cb_fn, cb_p,
+ sci_rnc->destination_state,
+ test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)
+ ? "<abort active>" : "<normal>");
+
switch (state) {
case SCI_RNC_INITIAL:
if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
return SCI_FAILURE_INVALID_STATE;
- sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
- sci_remote_node_context_construct_buffer(sci_rnc);
- sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING);
+ sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p,
+ RNC_DEST_READY);
+ if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) {
+ sci_remote_node_context_construct_buffer(sci_rnc);
+ sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING);
+ }
return SCI_SUCCESS;
+
case SCI_RNC_POSTING:
case SCI_RNC_INVALIDATING:
case SCI_RNC_RESUMING:
- if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY)
- return SCI_FAILURE_INVALID_STATE;
-
- sci_rnc->user_callback = cb_fn;
- sci_rnc->user_cookie = cb_p;
+ /* We are still waiting to post when a resume was
+ * requested.
+ */
+ switch (sci_rnc->destination_state) {
+ case RNC_DEST_SUSPENDED:
+ case RNC_DEST_SUSPENDED_RESUME:
+ /* Previously waiting to suspend after posting.
+ * Now continue onto resumption.
+ */
+ sci_remote_node_context_setup_to_resume(
+ sci_rnc, cb_fn, cb_p,
+ RNC_DEST_SUSPENDED_RESUME);
+ break;
+ default:
+ sci_remote_node_context_setup_to_resume(
+ sci_rnc, cb_fn, cb_p,
+ RNC_DEST_READY);
+ break;
+ }
return SCI_SUCCESS;
- case SCI_RNC_TX_SUSPENDED: {
- struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
- struct domain_device *dev = idev->domain_dev;
-
- sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
-
- /* TODO: consider adding a resume action of NONE, INVALIDATE, WRITE_TLCR */
- if (dev->dev_type == SAS_END_DEV || dev_is_expander(dev))
- sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
- else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
- if (idev->is_direct_attached) {
- /* @todo Fix this since I am being silly in writing to the STPTLDARNI register. */
- sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
- } else {
- sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING);
+
+ case SCI_RNC_TX_SUSPENDED:
+ case SCI_RNC_TX_RX_SUSPENDED:
+ {
+ struct domain_device *dev = idev->domain_dev;
+ /* If this is an expander attached SATA device we must
+ * invalidate and repost the RNC since this is the only
+ * way to clear the TCi to NCQ tag mapping table for
+ * the RNi. All other device types we can just resume.
+ */
+ sci_remote_node_context_setup_to_resume(
+ sci_rnc, cb_fn, cb_p, RNC_DEST_READY);
+
+ if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) {
+ if ((dev_is_sata(dev) && dev->parent) ||
+ (sci_rnc->destination_state == RNC_DEST_FINAL))
+ sci_change_state(&sci_rnc->sm,
+ SCI_RNC_INVALIDATING);
+ else
+ sci_change_state(&sci_rnc->sm,
+ SCI_RNC_RESUMING);
}
- } else
- return SCI_FAILURE;
+ }
return SCI_SUCCESS;
- }
- case SCI_RNC_TX_RX_SUSPENDED:
- sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
- sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
- return SCI_FAILURE_INVALID_STATE;
+
case SCI_RNC_AWAIT_SUSPENSION:
- sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
+ sci_remote_node_context_setup_to_resume(
+ sci_rnc, cb_fn, cb_p, RNC_DEST_SUSPENDED_RESUME);
return SCI_SUCCESS;
default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state %s\n", __func__,
+ rnc_state_name(state));
return SCI_FAILURE_INVALID_STATE;
}
}
case SCI_RNC_TX_RX_SUSPENDED:
case SCI_RNC_AWAIT_SUSPENSION:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: invalid state %d\n", __func__, state);
+ "%s: invalid state %s\n", __func__,
+ rnc_state_name(state));
return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
default:
- break;
+ dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+ "%s: invalid state %s\n", __func__,
+ rnc_state_name(state));
+ return SCI_FAILURE_INVALID_STATE;
}
- dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
- "%s: requested to start IO while still resuming, %d\n",
- __func__, state);
- return SCI_FAILURE_INVALID_STATE;
}
-enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
- struct isci_request *ireq)
+enum sci_status sci_remote_node_context_start_task(
+ struct sci_remote_node_context *sci_rnc,
+ struct isci_request *ireq,
+ scics_sds_remote_node_context_callback cb_fn,
+ void *cb_p)
+{
+ enum sci_status status = sci_remote_node_context_resume(sci_rnc,
+ cb_fn, cb_p);
+ if (status != SCI_SUCCESS)
+ dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+ "%s: resume failed: %d\n", __func__, status);
+ return status;
+}
+
+int sci_remote_node_context_is_safe_to_abort(
+ struct sci_remote_node_context *sci_rnc)
{
enum scis_sds_remote_node_context_states state;
state = sci_rnc->sm.current_state_id;
switch (state) {
+ case SCI_RNC_INVALIDATING:
+ case SCI_RNC_TX_RX_SUSPENDED:
+ return 1;
+ case SCI_RNC_POSTING:
case SCI_RNC_RESUMING:
case SCI_RNC_READY:
- case SCI_RNC_AWAIT_SUSPENSION:
- return SCI_SUCCESS;
case SCI_RNC_TX_SUSPENDED:
- case SCI_RNC_TX_RX_SUSPENDED:
- sci_remote_node_context_resume(sci_rnc, NULL, NULL);
- return SCI_SUCCESS;
+ case SCI_RNC_AWAIT_SUSPENSION:
+ case SCI_RNC_INITIAL:
+ return 0;
default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: invalid state %d\n", __func__, state);
- return SCI_FAILURE_INVALID_STATE;
+ return 0;
}
}
projects / linux-2.6-block.git / blobdiff