* (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 "intel_sas.h"
-#include "intel_ata.h"
+#include <scsi/sas.h>
#include "isci.h"
#include "port.h"
#include "remote_device.h"
#include "request.h"
-#include "scic_controller.h"
-#include "scic_io_request.h"
-#include "scic_phy.h"
-#include "scic_port.h"
-#include "scic_sds_controller.h"
-#include "scic_sds_phy.h"
-#include "scic_sds_port.h"
#include "remote_node_context.h"
-#include "scic_sds_request.h"
-#include "sci_environment.h"
-#include "sci_util.h"
#include "scu_event_codes.h"
#include "task.h"
/**
- * isci_remote_device_change_state() - This function gets the status of the
- * remote_device object.
- * @isci_device: This parameter points to the isci_remote_device object
- *
- * status of the object as a isci_status enum.
- */
-void isci_remote_device_change_state(
- struct isci_remote_device *isci_device,
- enum isci_status status)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&isci_device->state_lock, flags);
- isci_device->status = status;
- spin_unlock_irqrestore(&isci_device->state_lock, flags);
-}
-
-/**
- * isci_remote_device_not_ready() - This function is called by the scic when
+ * isci_remote_device_not_ready() - This function is called by the ihost when
* the remote device is not ready. We mark the isci device as ready (not
* "ready_for_io") and signal the waiting proccess.
* @isci_host: This parameter specifies the isci host object.
* @isci_device: This parameter specifies the remote device
*
+ * sci_lock is held on entrance to this function.
*/
static void isci_remote_device_not_ready(struct isci_host *ihost,
struct isci_remote_device *idev, u32 reason)
{
+ struct isci_request *ireq;
+
dev_dbg(&ihost->pdev->dev,
"%s: isci_device = %p\n", __func__, idev);
- if (reason == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED)
- isci_remote_device_change_state(idev, isci_stopping);
- else
- /* device ready is actually a "not ready for io" state. */
- isci_remote_device_change_state(idev, isci_ready);
+ switch (reason) {
+ case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED:
+ set_bit(IDEV_GONE, &idev->flags);
+ break;
+ case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED:
+ set_bit(IDEV_IO_NCQERROR, &idev->flags);
+
+ /* Kill all outstanding requests for the device. */
+ list_for_each_entry(ireq, &idev->reqs_in_process, dev_node) {
+
+ dev_dbg(&ihost->pdev->dev,
+ "%s: isci_device = %p request = %p\n",
+ __func__, idev, ireq);
+
+ sci_controller_terminate_request(ihost,
+ idev,
+ ireq);
+ }
+ /* Fall through into the default case... */
+ default:
+ clear_bit(IDEV_IO_READY, &idev->flags);
+ break;
+ }
}
/**
- * isci_remote_device_ready() - This function is called by the scic when the
+ * isci_remote_device_ready() - This function is called by the ihost when the
* remote device is ready. We mark the isci device as ready and signal the
* waiting proccess.
* @ihost: our valid isci_host
dev_dbg(&ihost->pdev->dev,
"%s: idev = %p\n", __func__, idev);
- isci_remote_device_change_state(idev, isci_ready_for_io);
+ clear_bit(IDEV_IO_NCQERROR, &idev->flags);
+ set_bit(IDEV_IO_READY, &idev->flags);
if (test_and_clear_bit(IDEV_START_PENDING, &idev->flags))
wake_up(&ihost->eventq);
}
-
-
-enum sci_status scic_remote_device_stop(
- struct scic_sds_remote_device *sci_dev,
- u32 timeout)
+/* called once the remote node context is ready to be freed.
+ * The remote device can now report that its stop operation is complete. none
+ */
+static void rnc_destruct_done(void *_dev)
{
- return sci_dev->state_handlers->stop_handler(sci_dev);
-}
+ struct isci_remote_device *idev = _dev;
-
-enum sci_status scic_remote_device_reset(
- struct scic_sds_remote_device *sci_dev)
-{
- return sci_dev->state_handlers->reset_handler(sci_dev);
+ BUG_ON(idev->started_request_count != 0);
+ sci_change_state(&idev->sm, SCI_DEV_STOPPED);
}
-
-enum sci_status scic_remote_device_reset_complete(
- struct scic_sds_remote_device *sci_dev)
+static enum sci_status sci_remote_device_terminate_requests(struct isci_remote_device *idev)
{
- return sci_dev->state_handlers->reset_complete_handler(sci_dev);
-}
+ struct isci_host *ihost = idev->owning_port->owning_controller;
+ enum sci_status status = SCI_SUCCESS;
+ u32 i;
-#define SCIC_SDS_REMOTE_DEVICE_MINIMUM_TIMER_COUNT (0)
-#define SCIC_SDS_REMOTE_DEVICE_MAXIMUM_TIMER_COUNT (SCI_MAX_REMOTE_DEVICES)
+ for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) {
+ struct isci_request *ireq = ihost->reqs[i];
+ enum sci_status s;
-/**
- *
- * @sci_dev: The remote device for which the suspend is being requested.
- *
- * This method invokes the remote device suspend state handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_suspend(
- struct scic_sds_remote_device *sci_dev,
- u32 suspend_type)
-{
- return sci_dev->state_handlers->suspend_handler(sci_dev, suspend_type);
-}
+ if (!test_bit(IREQ_ACTIVE, &ireq->flags) ||
+ ireq->target_device != idev)
+ continue;
-/**
- *
- * @sci_dev: The remote device for which the event handling is being
- * requested.
- * @frame_index: This is the frame index that is being processed.
- *
- * This method invokes the frame handler for the remote device state machine
- * enum sci_status
- */
-enum sci_status scic_sds_remote_device_frame_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
-{
- return sci_dev->state_handlers->frame_handler(sci_dev, frame_index);
-}
+ s = sci_controller_terminate_request(ihost, idev, ireq);
+ if (s != SCI_SUCCESS)
+ status = s;
+ }
-/**
- *
- * @sci_dev: The remote device for which the event handling is being
- * requested.
- * @event_code: This is the event code that is to be processed.
- *
- * This method invokes the remote device event handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_event_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 event_code)
-{
- return sci_dev->state_handlers->event_handler(sci_dev, event_code);
+ return status;
}
-/**
- *
- * @controller: The controller that is starting the io request.
- * @sci_dev: The remote device for which the start io handling is being
- * requested.
- * @io_request: The io request that is being started.
- *
- * This method invokes the remote device start io handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_start_io(
- struct scic_sds_controller *controller,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *io_request)
+enum sci_status sci_remote_device_stop(struct isci_remote_device *idev,
+ u32 timeout)
{
- return sci_dev->state_handlers->start_io_handler(
- sci_dev, io_request);
-}
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
-/**
- *
- * @controller: The controller that is completing the io request.
- * @sci_dev: The remote device for which the complete io handling is being
- * requested.
- * @io_request: The io request that is being completed.
- *
- * This method invokes the remote device complete io handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_complete_io(
- struct scic_sds_controller *controller,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *io_request)
-{
- return sci_dev->state_handlers->complete_io_handler(
- sci_dev, io_request);
+ switch (state) {
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_FINAL:
+ default:
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_DEV_STOPPED:
+ return SCI_SUCCESS;
+ case SCI_DEV_STARTING:
+ /* device not started so there had better be no requests */
+ BUG_ON(idev->started_request_count != 0);
+ sci_remote_node_context_destruct(&idev->rnc,
+ rnc_destruct_done, idev);
+ /* Transition to the stopping state and wait for the
+ * remote node to complete being posted and invalidated.
+ */
+ sci_change_state(sm, SCI_DEV_STOPPING);
+ return SCI_SUCCESS;
+ case SCI_DEV_READY:
+ case SCI_STP_DEV_IDLE:
+ case SCI_STP_DEV_CMD:
+ case SCI_STP_DEV_NCQ:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_STP_DEV_AWAIT_RESET:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_SMP_DEV_CMD:
+ sci_change_state(sm, SCI_DEV_STOPPING);
+ if (idev->started_request_count == 0) {
+ sci_remote_node_context_destruct(&idev->rnc,
+ rnc_destruct_done, idev);
+ return SCI_SUCCESS;
+ } else
+ return sci_remote_device_terminate_requests(idev);
+ break;
+ case SCI_DEV_STOPPING:
+ /* All requests should have been terminated, but if there is an
+ * attempt to stop a device already in the stopping state, then
+ * try again to terminate.
+ */
+ return sci_remote_device_terminate_requests(idev);
+ case SCI_DEV_RESETTING:
+ sci_change_state(sm, SCI_DEV_STOPPING);
+ return SCI_SUCCESS;
+ }
}
-/**
- *
- * @controller: The controller that is starting the task request.
- * @sci_dev: The remote device for which the start task handling is being
- * requested.
- * @io_request: The task request that is being started.
- *
- * This method invokes the remote device start task handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_start_task(
- struct scic_sds_controller *controller,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *io_request)
+enum sci_status sci_remote_device_reset(struct isci_remote_device *idev)
{
- return sci_dev->state_handlers->start_task_handler(
- sci_dev, io_request);
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+
+ switch (state) {
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_STOPPED:
+ case SCI_DEV_STARTING:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_SMP_DEV_CMD:
+ case SCI_DEV_STOPPING:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_RESETTING:
+ case SCI_DEV_FINAL:
+ default:
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_DEV_READY:
+ case SCI_STP_DEV_IDLE:
+ case SCI_STP_DEV_CMD:
+ case SCI_STP_DEV_NCQ:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_STP_DEV_AWAIT_RESET:
+ sci_change_state(sm, SCI_DEV_RESETTING);
+ return SCI_SUCCESS;
+ }
}
-/**
- *
- * @sci_dev:
- * @request:
- *
- * This method takes the request and bulids an appropriate SCU context for the
- * request and then requests the controller to post the request. none
- */
-void scic_sds_remote_device_post_request(
- struct scic_sds_remote_device *sci_dev,
- u32 request)
+enum sci_status sci_remote_device_reset_complete(struct isci_remote_device *idev)
{
- u32 context;
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
- context = scic_sds_remote_device_build_command_context(sci_dev, request);
+ if (state != SCI_DEV_RESETTING) {
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ }
- scic_sds_controller_post_request(
- scic_sds_remote_device_get_controller(sci_dev),
- context
- );
+ sci_change_state(sm, SCI_DEV_READY);
+ return SCI_SUCCESS;
}
-/* called once the remote node context is ready to be freed.
- * The remote device can now report that its stop operation is complete. none
- */
-static void scic_sds_cb_remote_device_rnc_destruct_complete(void *_dev)
+enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev,
+ u32 suspend_type)
{
- struct scic_sds_remote_device *sci_dev = _dev;
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+
+ if (state != SCI_STP_DEV_CMD) {
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ }
- BUG_ON(sci_dev->started_request_count != 0);
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
+ return sci_remote_node_context_suspend(&idev->rnc,
+ suspend_type, NULL, NULL);
}
-/* called once the remote node context has transisitioned to a
- * ready state. This is the indication that the remote device object can also
- * transition to ready.
- */
-static void remote_device_resume_done(void *_dev)
+enum sci_status sci_remote_device_frame_handler(struct isci_remote_device *idev,
+ u32 frame_index)
{
- struct scic_sds_remote_device *sci_dev = _dev;
- enum scic_sds_remote_device_states state;
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+ struct isci_host *ihost = idev->owning_port->owning_controller;
+ enum sci_status status;
- state = sci_dev->state_machine.current_state_id;
switch (state) {
- case SCI_BASE_REMOTE_DEVICE_STATE_READY:
- case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE:
- case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD:
- case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ:
- case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR:
- case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET:
- case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE:
- case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD:
- break;
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_STOPPED:
+ case SCI_DEV_STARTING:
+ case SCI_STP_DEV_IDLE:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_DEV_FINAL:
default:
- /* go 'ready' if we are not already in a ready state */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_READY);
- break;
- }
-}
-
-/**
- *
- * @device: This parameter specifies the device for which the request is being
- * started.
- * @request: This parameter specifies the request being started.
- * @status: This parameter specifies the current start operation status.
- *
- * This method will perform the STP request start processing common to IO
- * requests and task requests of all types. none
- */
-static void scic_sds_remote_device_start_request(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req,
- enum sci_status status)
-{
- /* We still have a fault in starting the io complete it on the port */
- if (status == SCI_SUCCESS)
- scic_sds_remote_device_increment_request_count(sci_dev);
- else{
- sci_dev->owning_port->state_handlers->complete_io_handler(
- sci_dev->owning_port, sci_dev, sci_req
- );
- }
-}
-
-
-/**
- *
- * @request: This parameter specifies the request being continued.
- *
- * This method will continue to post tc for a STP request. This method usually
- * serves as a callback when RNC gets resumed during a task management
- * sequence. none
- */
-static void scic_sds_remote_device_continue_request(void *dev)
-{
- struct scic_sds_remote_device *sci_dev = dev;
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ /* Return the frame back to the controller */
+ sci_controller_release_frame(ihost, frame_index);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_DEV_READY:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_STP_DEV_AWAIT_RESET:
+ case SCI_DEV_STOPPING:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_RESETTING: {
+ struct isci_request *ireq;
+ struct ssp_frame_hdr hdr;
+ void *frame_header;
+ ssize_t word_cnt;
+
+ status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+ frame_index,
+ &frame_header);
+ if (status != SCI_SUCCESS)
+ return status;
- /* we need to check if this request is still valid to continue. */
- if (sci_dev->working_request)
- scic_controller_continue_io(sci_dev->working_request);
-}
+ word_cnt = sizeof(hdr) / sizeof(u32);
+ sci_swab32_cpy(&hdr, frame_header, word_cnt);
-/**
- * This method will terminate all of the IO requests in the controllers IO
- * request table that were targeted for this device.
- * @sci_dev: This parameter specifies the remote device for which to
- * attempt to terminate all requests.
- *
- * This method returns an indication as to whether all requests were
- * successfully terminated. If a single request fails to be terminated, then
- * this method will return the failure.
- */
-static enum sci_status scic_sds_remote_device_terminate_requests(
- struct scic_sds_remote_device *sci_dev)
-{
- enum sci_status status = SCI_SUCCESS;
- enum sci_status terminate_status = SCI_SUCCESS;
- struct scic_sds_request *sci_req;
- u32 index;
- u32 request_count = sci_dev->started_request_count;
-
- for (index = 0;
- (index < SCI_MAX_IO_REQUESTS) && (request_count > 0);
- index++) {
- sci_req = sci_dev->owning_port->owning_controller->io_request_table[index];
-
- if ((sci_req != NULL) && (sci_req->target_device == sci_dev)) {
- terminate_status = scic_controller_terminate_request(
- sci_dev->owning_port->owning_controller,
- sci_dev,
- sci_req
- );
-
- if (terminate_status != SCI_SUCCESS)
- status = terminate_status;
-
- request_count--;
+ ireq = sci_request_by_tag(ihost, be16_to_cpu(hdr.tag));
+ if (ireq && ireq->target_device == idev) {
+ /* The IO request is now in charge of releasing the frame */
+ status = sci_io_request_frame_handler(ireq, frame_index);
+ } else {
+ /* We could not map this tag to a valid IO
+ * request Just toss the frame and continue
+ */
+ sci_controller_release_frame(ihost, frame_index);
}
+ break;
}
+ case SCI_STP_DEV_NCQ: {
+ struct dev_to_host_fis *hdr;
- return status;
-}
-
-static enum sci_status
-default_device_handler(struct scic_sds_remote_device *sci_dev,
- const char *func)
-{
- dev_warn(scirdev_to_dev(sci_dev),
- "%s: in wrong state: %d\n", func,
- sci_base_state_machine_get_state(&sci_dev->state_machine));
- return SCI_FAILURE_INVALID_STATE;
-}
-
-static enum sci_status scic_sds_remote_device_default_stop_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return default_device_handler(sci_dev, __func__);
-}
+ status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+ frame_index,
+ (void **)&hdr);
+ if (status != SCI_SUCCESS)
+ return status;
-static enum sci_status scic_sds_remote_device_default_fail_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return default_device_handler(sci_dev, __func__);
-}
+ if (hdr->fis_type == FIS_SETDEVBITS &&
+ (hdr->status & ATA_ERR)) {
+ idev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
-static enum sci_status scic_sds_remote_device_default_destruct_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return default_device_handler(sci_dev, __func__);
-}
+ /* TODO Check sactive and complete associated IO if any. */
+ sci_change_state(sm, SCI_STP_DEV_NCQ_ERROR);
+ } else if (hdr->fis_type == FIS_REGD2H &&
+ (hdr->status & ATA_ERR)) {
+ /*
+ * Some devices return D2H FIS when an NCQ error is detected.
+ * Treat this like an SDB error FIS ready reason.
+ */
+ idev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
+ sci_change_state(&idev->sm, SCI_STP_DEV_NCQ_ERROR);
+ } else
+ status = SCI_FAILURE;
+
+ sci_controller_release_frame(ihost, frame_index);
+ break;
+ }
+ case SCI_STP_DEV_CMD:
+ case SCI_SMP_DEV_CMD:
+ /* The device does not process any UF received from the hardware while
+ * in this state. All unsolicited frames are forwarded to the io request
+ * object.
+ */
+ status = sci_io_request_frame_handler(idev->working_request, frame_index);
+ break;
+ }
-static enum sci_status scic_sds_remote_device_default_reset_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return default_device_handler(sci_dev, __func__);
+ return status;
}
-static enum sci_status scic_sds_remote_device_default_reset_complete_handler(
- struct scic_sds_remote_device *sci_dev)
+static bool is_remote_device_ready(struct isci_remote_device *idev)
{
- return default_device_handler(sci_dev, __func__);
-}
-static enum sci_status scic_sds_remote_device_default_suspend_handler(
- struct scic_sds_remote_device *sci_dev, u32 suspend_type)
-{
- return default_device_handler(sci_dev, __func__);
-}
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
-static enum sci_status scic_sds_remote_device_default_resume_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return default_device_handler(sci_dev, __func__);
+ switch (state) {
+ case SCI_DEV_READY:
+ case SCI_STP_DEV_IDLE:
+ case SCI_STP_DEV_CMD:
+ case SCI_STP_DEV_NCQ:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_STP_DEV_AWAIT_RESET:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_SMP_DEV_CMD:
+ return true;
+ default:
+ return false;
+ }
}
-/**
- *
- * @device: The struct scic_sds_remote_device which is then cast into a
- * struct scic_sds_remote_device.
- * @event_code: The event code that the struct scic_sds_controller wants the device
- * object to process.
- *
- * This method is the default event handler. It will call the RNC state
- * machine handler for any RNC events otherwise it will log a warning and
- * returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_remote_device_core_event_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 event_code,
- bool is_ready_state)
+enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev,
+ u32 event_code)
{
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
enum sci_status status;
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_OPS_MISC:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
- status = scic_sds_remote_node_context_event_handler(&sci_dev->rnc, event_code);
+ status = sci_remote_node_context_event_handler(&idev->rnc, event_code);
break;
case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
-
if (scu_get_event_code(event_code) == SCU_EVENT_IT_NEXUS_TIMEOUT) {
status = SCI_SUCCESS;
/* Suspend the associated RNC */
- scic_sds_remote_node_context_suspend(&sci_dev->rnc,
+ sci_remote_node_context_suspend(&idev->rnc,
SCI_SOFTWARE_SUSPENSION,
NULL, NULL);
- dev_dbg(scirdev_to_dev(sci_dev),
+ dev_dbg(scirdev_to_dev(idev),
"%s: device: %p event code: %x: %s\n",
- __func__, sci_dev, event_code,
- (is_ready_state)
+ __func__, idev, event_code,
+ is_remote_device_ready(idev)
? "I_T_Nexus_Timeout event"
: "I_T_Nexus_Timeout event in wrong state");
break;
}
/* Else, fall through and treat as unhandled... */
-
default:
- dev_dbg(scirdev_to_dev(sci_dev),
+ dev_dbg(scirdev_to_dev(idev),
"%s: device: %p event code: %x: %s\n",
- __func__, sci_dev, event_code,
- (is_ready_state)
+ __func__, idev, event_code,
+ is_remote_device_ready(idev)
? "unexpected event"
: "unexpected event in wrong state");
status = SCI_FAILURE_INVALID_STATE;
break;
}
- return status;
-}
-/**
- *
- * @device: The struct scic_sds_remote_device which is then cast into a
- * struct scic_sds_remote_device.
- * @event_code: The event code that the struct scic_sds_controller wants the device
- * object to process.
- *
- * This method is the default event handler. It will call the RNC state
- * machine handler for any RNC events otherwise it will log a warning and
- * returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_remote_device_default_event_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 event_code)
-{
- return scic_sds_remote_device_core_event_handler(sci_dev,
- event_code,
- false);
-}
-
-/**
- *
- * @device: The struct scic_sds_remote_device which is then cast into a
- * struct scic_sds_remote_device.
- * @frame_index: The frame index for which the struct scic_sds_controller wants this
- * device object to process.
- *
- * This method is the default unsolicited frame handler. It logs a warning,
- * releases the frame and returns a failure. enum sci_status
- * SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_remote_device_default_frame_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
-{
- dev_warn(scirdev_to_dev(sci_dev),
- "%s: SCIC Remote Device requested to handle frame %x "
- "while in wrong state %d\n",
- __func__,
- frame_index,
- sci_base_state_machine_get_state(
- &sci_dev->state_machine));
-
- /* Return the frame back to the controller */
- scic_sds_controller_release_frame(
- scic_sds_remote_device_get_controller(sci_dev), frame_index
- );
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-static enum sci_status scic_sds_remote_device_default_start_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- return default_device_handler(sci_dev, __func__);
-}
-
-static enum sci_status scic_sds_remote_device_default_complete_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- return default_device_handler(sci_dev, __func__);
-}
-
-static enum sci_status scic_sds_remote_device_default_continue_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- return default_device_handler(sci_dev, __func__);
-}
-
-/**
- *
- * @device: The struct scic_sds_remote_device which is then cast into a
- * struct scic_sds_remote_device.
- * @frame_index: The frame index for which the struct scic_sds_controller wants this
- * device object to process.
- *
- * This method is a general ssp frame handler. In most cases the device object
- * needs to route the unsolicited frame processing to the io request object.
- * This method decodes the tag for the io request object and routes the
- * unsolicited frame to that object. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_remote_device_general_frame_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
-{
- enum sci_status result;
- struct sci_ssp_frame_header *frame_header;
- struct scic_sds_request *io_request;
-
- result = scic_sds_unsolicited_frame_control_get_header(
- &(scic_sds_remote_device_get_controller(sci_dev)->uf_control),
- frame_index,
- (void **)&frame_header
- );
-
- if (SCI_SUCCESS == result) {
- io_request = scic_sds_controller_get_io_request_from_tag(
- scic_sds_remote_device_get_controller(sci_dev), frame_header->tag);
-
- if ((io_request == NULL)
- || (io_request->target_device != sci_dev)) {
- /*
- * We could not map this tag to a valid IO request
- * Just toss the frame and continue */
- scic_sds_controller_release_frame(
- scic_sds_remote_device_get_controller(sci_dev), frame_index
- );
- } else {
- /* The IO request is now in charge of releasing the frame */
- result = io_request->state_handlers->frame_handler(
- io_request, frame_index);
- }
- }
-
- return result;
-}
-
-/**
- *
- * @[in]: sci_dev This is the device object that is receiving the event.
- * @[in]: event_code The event code to process.
- *
- * This is a common method for handling events reported to the remote device
- * from the controller object. enum sci_status
- */
-static enum sci_status scic_sds_remote_device_general_event_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 event_code)
-{
- return scic_sds_remote_device_core_event_handler(sci_dev,
- event_code,
- true);
-}
-
-static enum sci_status scic_sds_remote_device_stopped_state_stop_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_dev: The struct scic_sds_remote_device which is cast into a
- * struct scic_sds_remote_device.
- *
- * This method will destruct a struct scic_sds_remote_device that is in a stopped
- * state. This is the only state from which a destruct request will succeed.
- * The RNi for this struct scic_sds_remote_device is returned to the free pool and the
- * device object transitions to the SCI_BASE_REMOTE_DEVICE_STATE_FINAL.
- * enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_remote_device_stopped_state_destruct_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- struct scic_sds_controller *scic;
-
- scic = scic_sds_remote_device_get_controller(sci_dev);
- scic_sds_controller_free_remote_node_context(scic, sci_dev,
- sci_dev->rnc.remote_node_index);
- sci_dev->rnc.remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
-
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_FINAL);
-
- return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * * STARTING STATE HANDLERS
- * ***************************************************************************** */
-
-static enum sci_status scic_sds_remote_device_starting_state_stop_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- /*
- * This device has not yet started so there had better be no IO requests
- */
- BUG_ON(sci_dev->started_request_count != 0);
-
- /*
- * Destroy the remote node context
- */
- scic_sds_remote_node_context_destruct(&sci_dev->rnc,
- scic_sds_cb_remote_device_rnc_destruct_complete, sci_dev);
-
- /*
- * Transition to the stopping state and wait for the remote node to
- * complete being posted and invalidated.
- */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
-
- return SCI_SUCCESS;
-}
-
-static enum sci_status scic_sds_remote_device_ready_state_stop_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- enum sci_status status = SCI_SUCCESS;
-
- /* Request the parent state machine to transition to the stopping state */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
-
- if (sci_dev->started_request_count == 0) {
- scic_sds_remote_node_context_destruct(&sci_dev->rnc,
- scic_sds_cb_remote_device_rnc_destruct_complete,
- sci_dev);
- } else
- status = scic_sds_remote_device_terminate_requests(sci_dev);
-
- return status;
-}
-
-/**
- *
- * @device: The struct scic_sds_remote_device object which is cast to a
- * struct scic_sds_remote_device object.
- *
- * This is the ready state device reset handler enum sci_status
- */
-static enum sci_status scic_sds_remote_device_ready_state_reset_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- /* Request the parent state machine to transition to the stopping state */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_RESETTING);
-
- return SCI_SUCCESS;
-}
-
-/*
- * This method will attempt to start a task request for this device object. The
- * remote device object will issue the start request for the task and if
- * successful it will start the request for the port object then increment its
- * own requet count. enum sci_status SCI_SUCCESS if the task request is started for
- * this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
- * object could not get the resources to start.
- */
-static enum sci_status scic_sds_remote_device_ready_state_start_task_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status result;
-
- /* See if the port is in a state where we can start the IO request */
- result = scic_sds_port_start_io(
- scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
-
- if (result == SCI_SUCCESS) {
- result = scic_sds_remote_node_context_start_task(&sci_dev->rnc,
- request);
- if (result == SCI_SUCCESS)
- result = scic_sds_request_start(request);
-
- scic_sds_remote_device_start_request(sci_dev, request, result);
- }
-
- return result;
-}
-
-/*
- * This method will attempt to start an io request for this device object. The
- * remote device object will issue the start request for the io and if
- * successful it will start the request for the port object then increment its
- * own requet count. enum sci_status SCI_SUCCESS if the io request is started for
- * this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
- * object could not get the resources to start.
- */
-static enum sci_status scic_sds_remote_device_ready_state_start_io_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status result;
-
- /* See if the port is in a state where we can start the IO request */
- result = scic_sds_port_start_io(
- scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
-
- if (result == SCI_SUCCESS) {
- result = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request);
- if (result == SCI_SUCCESS)
- result = scic_sds_request_start(request);
-
- scic_sds_remote_device_start_request(sci_dev, request, result);
- }
-
- return result;
-}
-
-/*
- * This method will complete the request for the remote device object. The
- * method will call the completion handler for the request object and if
- * successful it will complete the request on the port object then decrement
- * its own started_request_count. enum sci_status
- */
-static enum sci_status scic_sds_remote_device_ready_state_complete_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status result;
-
- result = scic_sds_request_complete(request);
-
- if (result != SCI_SUCCESS)
- return result;
-
- /* See if the port is in a state
- * where we can start the IO request */
- result = scic_sds_port_complete_io(
- scic_sds_remote_device_get_port(sci_dev),
- sci_dev, request);
-
- if (result == SCI_SUCCESS)
- scic_sds_remote_device_decrement_request_count(sci_dev);
-
- return result;
-}
-
-/*
- * *****************************************************************************
- * * STOPPING STATE HANDLERS
- * ***************************************************************************** */
-
-/**
- *
- * @sci_dev: The struct scic_sds_remote_device which is cast into a
- * struct scic_sds_remote_device.
- *
- * This method will stop a struct scic_sds_remote_device that is already in the
- * SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This is not considered an error
- * since we allow a stop request on a device that is alreay stopping or
- * stopped. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_remote_device_stopping_state_stop_handler(
- struct scic_sds_remote_device *device)
-{
- /*
- * All requests should have been terminated, but if there is an
- * attempt to stop a device already in the stopping state, then
- * try again to terminate. */
- return scic_sds_remote_device_terminate_requests(device);
-}
-
-
-/**
- *
- * @device: The device object for which the request is completing.
- * @request: The task request that is being completed.
- *
- * This method completes requests for this struct scic_sds_remote_device while it is
- * in the SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This method calls the
- * complete method for the request object and if that is successful the port
- * object is called to complete the task request. Then the device object itself
- * completes the task request. If struct scic_sds_remote_device started_request_count
- * goes to 0 and the invalidate RNC request has completed the device object can
- * transition to the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED. enum sci_status
- */
-static enum sci_status scic_sds_remote_device_stopping_state_complete_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status status = SCI_SUCCESS;
-
- status = scic_sds_request_complete(request);
-
if (status != SCI_SUCCESS)
return status;
- status = scic_sds_port_complete_io(scic_sds_remote_device_get_port(sci_dev),
- sci_dev, request);
- if (status != SCI_SUCCESS)
- return status;
-
- scic_sds_remote_device_decrement_request_count(sci_dev);
-
- if (scic_sds_remote_device_get_request_count(sci_dev) == 0)
- scic_sds_remote_node_context_destruct(&sci_dev->rnc,
- scic_sds_cb_remote_device_rnc_destruct_complete,
- sci_dev);
- return SCI_SUCCESS;
-}
-
-static enum sci_status scic_sds_remote_device_resetting_state_reset_complete_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_READY);
-
- return SCI_SUCCESS;
-}
-
-static enum sci_status scic_sds_remote_device_resetting_state_stop_handler(
- struct scic_sds_remote_device *sci_dev)
-{
- sci_base_state_machine_change_state(
- &sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
- );
-
- return SCI_SUCCESS;
-}
-
-/* complete requests for this device while it is in the
- * SCI_BASE_REMOTE_DEVICE_STATE_RESETTING state. This method calls the complete
- * method for the request object and if that is successful the port object is
- * called to complete the task request. Then the device object itself completes
- * the task request. enum sci_status
- */
-static enum sci_status scic_sds_remote_device_resetting_state_complete_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status status = SCI_SUCCESS;
-
- status = scic_sds_request_complete(request);
-
- if (status == SCI_SUCCESS) {
- status = scic_sds_port_complete_io(
- scic_sds_remote_device_get_port(sci_dev),
- sci_dev, request);
-
- if (status == SCI_SUCCESS) {
- scic_sds_remote_device_decrement_request_count(sci_dev);
- }
- }
-
- return status;
-}
+ if (state == SCI_STP_DEV_IDLE) {
-static enum sci_status scic_sds_stp_remote_device_complete_request(struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- enum sci_status status;
-
- status = scic_sds_io_request_complete(sci_req);
- if (status != SCI_SUCCESS)
- goto out;
-
- status = scic_sds_port_complete_io(sci_dev->owning_port, sci_dev, sci_req);
- if (status != SCI_SUCCESS)
- goto out;
-
- scic_sds_remote_device_decrement_request_count(sci_dev);
- if (sci_req->sci_status == SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
- /* This request causes hardware error, device needs to be Lun Reset.
- * So here we force the state machine to IDLE state so the rest IOs
- * can reach RNC state handler, these IOs will be completed by RNC with
- * status of "DEVICE_RESET_REQUIRED", instead of "INVALID STATE".
- */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET);
- } else if (scic_sds_remote_device_get_request_count(sci_dev) == 0)
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
-
-
- out:
- if (status != SCI_SUCCESS)
- dev_err(scirdev_to_dev(sci_dev),
- "%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x "
- "could not complete\n", __func__, sci_dev->owning_port,
- sci_dev, sci_req, status);
-
- return status;
-}
-
-/* scic_sds_stp_remote_device_ready_substate_start_request_handler - start stp
- * @device: The target device a task management request towards to.
- * @request: The task request.
- *
- * This is the READY NCQ substate handler to start task management request. In
- * this routine, we suspend and resume the RNC. enum sci_status Always return
- * SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS status to let
- * controller_start_task_handler know that the controller can't post TC for
- * task request yet, instead, when RNC gets resumed, a controller_continue_task
- * callback will be called.
- */
-static enum sci_status scic_sds_stp_remote_device_ready_substate_start_request_handler(
- struct scic_sds_remote_device *device,
- struct scic_sds_request *request)
-{
- enum sci_status status;
-
- /* Will the port allow the io request to start? */
- status = device->owning_port->state_handlers->start_io_handler(
- device->owning_port, device, request);
- if (status != SCI_SUCCESS)
- return status;
-
- status = scic_sds_remote_node_context_start_task(&device->rnc, request);
- if (status != SCI_SUCCESS)
- goto out;
-
- status = request->state_handlers->start_handler(request);
- if (status != SCI_SUCCESS)
- goto out;
-
- /*
- * Note: If the remote device state is not IDLE this will replace
- * the request that probably resulted in the task management request.
- */
- device->working_request = request;
- sci_base_state_machine_change_state(&device->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD);
-
- /*
- * The remote node context must cleanup the TCi to NCQ mapping table.
- * The only way to do this correctly is to either write to the TLCR
- * register or to invalidate and repost the RNC. In either case the
- * remote node context state machine will take the correct action when
- * the remote node context is suspended and later resumed.
- */
- scic_sds_remote_node_context_suspend(&device->rnc,
- SCI_SOFTWARE_SUSPENSION, NULL, NULL);
- scic_sds_remote_node_context_resume(&device->rnc,
- scic_sds_remote_device_continue_request,
- device);
-
-out:
- scic_sds_remote_device_start_request(device, request, status);
- /*
- * We need to let the controller start request handler know that it can't
- * post TC yet. We will provide a callback function to post TC when RNC gets
- * resumed.
- */
- return SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS;
-}
-
-/* handle the start io operation for a sata device that is in the command idle
- * state. - Evalute the type of IO request to be started - If its an NCQ
- * request change to NCQ substate - If its any other command change to the CMD
- * substate
- *
- * If this is a softreset we may want to have a different substate.
- */
-static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_start_io_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status status;
- struct isci_request *isci_request = request->ireq;
- enum scic_sds_remote_device_states new_state;
-
- /* Will the port allow the io request to start? */
- status = sci_dev->owning_port->state_handlers->start_io_handler(
- sci_dev->owning_port, sci_dev, request);
- if (status != SCI_SUCCESS)
- return status;
-
- status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request);
- if (status != SCI_SUCCESS)
- goto out;
-
- status = request->state_handlers->start_handler(request);
- if (status != SCI_SUCCESS)
- goto out;
-
- if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA)
- new_state = SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ;
- else {
- sci_dev->working_request = request;
- new_state = SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD;
+ /* We pick up suspension events to handle specifically to this
+ * state. We resume the RNC right away.
+ */
+ if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX ||
+ scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX)
+ status = sci_remote_node_context_resume(&idev->rnc, NULL, NULL);
}
- sci_base_state_machine_change_state(&sci_dev->state_machine, new_state);
-out:
- scic_sds_remote_device_start_request(sci_dev, request, status);
+
return status;
}
-
-static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_event_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 event_code)
+static void sci_remote_device_start_request(struct isci_remote_device *idev,
+ struct isci_request *ireq,
+ enum sci_status status)
{
- enum sci_status status;
+ struct isci_port *iport = idev->owning_port;
- status = scic_sds_remote_device_general_event_handler(sci_dev, event_code);
+ /* cleanup requests that failed after starting on the port */
if (status != SCI_SUCCESS)
- return status;
-
- /* We pick up suspension events to handle specifically to this state. We
- * resume the RNC right away. enum sci_status
- */
- if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX ||
- scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX)
- status = scic_sds_remote_node_context_resume(&sci_dev->rnc, NULL, NULL);
-
- return status;
+ sci_port_complete_io(iport, idev, ireq);
+ else {
+ kref_get(&idev->kref);
+ idev->started_request_count++;
+ }
}
-static enum sci_status scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
+enum sci_status sci_remote_device_start_io(struct isci_host *ihost,
+ struct isci_remote_device *idev,
+ struct isci_request *ireq)
{
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+ struct isci_port *iport = idev->owning_port;
enum sci_status status;
- struct isci_request *isci_request = request->ireq;
- scic_sds_port_io_request_handler_t start_io;
- if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA) {
- start_io = sci_dev->owning_port->state_handlers->start_io_handler;
- status = start_io(sci_dev->owning_port, sci_dev, request);
+ switch (state) {
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_STOPPED:
+ case SCI_DEV_STARTING:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_DEV_STOPPING:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_RESETTING:
+ case SCI_DEV_FINAL:
+ default:
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_DEV_READY:
+ /* attempt to start an io request for this device object. The remote
+ * device object will issue the start request for the io and if
+ * successful it will start the request for the port object then
+ * increment its own request count.
+ */
+ status = sci_port_start_io(iport, idev, ireq);
if (status != SCI_SUCCESS)
return status;
- status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request);
- if (status == SCI_SUCCESS)
- status = request->state_handlers->start_handler(request);
+ status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- scic_sds_remote_device_start_request(sci_dev, request, status);
- } else
- status = SCI_FAILURE_INVALID_STATE;
+ status = sci_request_start(ireq);
+ break;
+ case SCI_STP_DEV_IDLE: {
+ /* handle the start io operation for a sata device that is in
+ * the command idle state. - Evalute the type of IO request to
+ * be started - If its an NCQ request change to NCQ substate -
+ * If its any other command change to the CMD substate
+ *
+ * If this is a softreset we may want to have a different
+ * substate.
+ */
+ enum sci_remote_device_states new_state;
+ struct sas_task *task = isci_request_access_task(ireq);
- return status;
-}
+ status = sci_port_start_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
-static enum sci_status scic_sds_stp_remote_device_ready_ncq_substate_frame_handler(struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
-{
- enum sci_status status;
- struct sata_fis_header *frame_header;
- struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
+ status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
- if (status != SCI_SUCCESS)
- return status;
+ status = sci_request_start(ireq);
+ if (status != SCI_SUCCESS)
+ break;
- if (frame_header->fis_type == SATA_FIS_TYPE_SETDEVBITS &&
- (frame_header->status & ATA_STATUS_REG_ERROR_BIT)) {
- sci_dev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
+ if (task->ata_task.use_ncq)
+ new_state = SCI_STP_DEV_NCQ;
+ else {
+ idev->working_request = ireq;
+ new_state = SCI_STP_DEV_CMD;
+ }
+ sci_change_state(sm, new_state);
+ break;
+ }
+ case SCI_STP_DEV_NCQ: {
+ struct sas_task *task = isci_request_access_task(ireq);
- /* TODO Check sactive and complete associated IO if any. */
+ if (task->ata_task.use_ncq) {
+ status = sci_port_start_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR);
- } else if (frame_header->fis_type == SATA_FIS_TYPE_REGD2H &&
- (frame_header->status & ATA_STATUS_REG_ERROR_BIT)) {
- /*
- * Some devices return D2H FIS when an NCQ error is detected.
- * Treat this like an SDB error FIS ready reason.
- */
- sci_dev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
+ status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR);
- } else
- status = SCI_FAILURE;
+ status = sci_request_start(ireq);
+ } else
+ return SCI_FAILURE_INVALID_STATE;
+ break;
+ }
+ case SCI_STP_DEV_AWAIT_RESET:
+ return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+ case SCI_SMP_DEV_IDLE:
+ status = sci_port_start_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
- scic_sds_controller_release_frame(scic, frame_index);
+ status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- return status;
-}
+ status = sci_request_start(ireq);
+ if (status != SCI_SUCCESS)
+ break;
-static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler(
- struct scic_sds_remote_device *device,
- struct scic_sds_request *request)
-{
- /* device is already handling a command it can not accept new commands
- * until this one is complete.
- */
- return SCI_FAILURE_INVALID_STATE;
+ idev->working_request = ireq;
+ sci_change_state(&idev->sm, SCI_SMP_DEV_CMD);
+ break;
+ case SCI_STP_DEV_CMD:
+ case SCI_SMP_DEV_CMD:
+ /* device is already handling a command it can not accept new commands
+ * until this one is complete.
+ */
+ return SCI_FAILURE_INVALID_STATE;
+ }
+
+ sci_remote_device_start_request(idev, ireq, status);
+ return status;
}
-static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 suspend_type)
+static enum sci_status common_complete_io(struct isci_port *iport,
+ struct isci_remote_device *idev,
+ struct isci_request *ireq)
{
enum sci_status status;
- status = scic_sds_remote_node_context_suspend(&sci_dev->rnc,
- suspend_type, NULL, NULL);
-
- return status;
-}
+ status = sci_request_complete(ireq);
+ if (status != SCI_SUCCESS)
+ return status;
-static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_frame_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
-{
- /* The device doe not process any UF received from the hardware while
- * in this state. All unsolicited frames are forwarded to the io
- * request object.
- */
- return scic_sds_io_request_frame_handler(sci_dev->working_request,
- frame_index);
-}
+ status = sci_port_complete_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
-static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler(
- struct scic_sds_remote_device *device,
- struct scic_sds_request *request)
-{
- return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+ sci_remote_device_decrement_request_count(idev);
+ return status;
}
-static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler(
- struct scic_sds_remote_device *device,
- struct scic_sds_request *request)
+enum sci_status sci_remote_device_complete_io(struct isci_host *ihost,
+ struct isci_remote_device *idev,
+ struct isci_request *ireq)
{
- struct scic_sds_request *sci_req = request;
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+ struct isci_port *iport = idev->owning_port;
enum sci_status status;
- status = scic_sds_io_request_complete(sci_req);
- if (status != SCI_SUCCESS)
- goto out;
+ switch (state) {
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_STOPPED:
+ case SCI_DEV_STARTING:
+ case SCI_STP_DEV_IDLE:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_FINAL:
+ default:
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_DEV_READY:
+ case SCI_STP_DEV_AWAIT_RESET:
+ case SCI_DEV_RESETTING:
+ status = common_complete_io(iport, idev, ireq);
+ break;
+ case SCI_STP_DEV_CMD:
+ case SCI_STP_DEV_NCQ:
+ case SCI_STP_DEV_NCQ_ERROR:
+ status = common_complete_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- status = scic_sds_port_complete_io(device->owning_port, device, sci_req);
- if (status != SCI_SUCCESS)
- goto out;
+ if (ireq->sci_status == SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+ /* This request causes hardware error, device needs to be Lun Reset.
+ * So here we force the state machine to IDLE state so the rest IOs
+ * can reach RNC state handler, these IOs will be completed by RNC with
+ * status of "DEVICE_RESET_REQUIRED", instead of "INVALID STATE".
+ */
+ sci_change_state(sm, SCI_STP_DEV_AWAIT_RESET);
+ } else if (idev->started_request_count == 0)
+ sci_change_state(sm, SCI_STP_DEV_IDLE);
+ break;
+ case SCI_SMP_DEV_CMD:
+ status = common_complete_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ break;
+ sci_change_state(sm, SCI_SMP_DEV_IDLE);
+ break;
+ case SCI_DEV_STOPPING:
+ status = common_complete_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ break;
+
+ if (idev->started_request_count == 0)
+ sci_remote_node_context_destruct(&idev->rnc,
+ rnc_destruct_done,
+ idev);
+ break;
+ }
- scic_sds_remote_device_decrement_request_count(device);
- out:
if (status != SCI_SUCCESS)
- dev_err(scirdev_to_dev(device),
+ dev_err(scirdev_to_dev(idev),
"%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x "
- "could not complete\n",
- __func__, device->owning_port, device, sci_req, status);
+ "could not complete\n", __func__, iport,
+ idev, ireq, status);
+ else
+ isci_put_device(idev);
return status;
}
-static void scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler(void *_dev)
+static void sci_remote_device_continue_request(void *dev)
{
- struct scic_sds_remote_device *sci_dev = _dev;
- struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
- struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
+ struct isci_remote_device *idev = dev;
- /* For NCQ operation we do not issue a isci_remote_device_not_ready().
- * As a result, avoid sending the ready notification.
- */
- if (sci_dev->state_machine.previous_state_id != SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ)
- isci_remote_device_ready(scic->ihost, idev);
+ /* we need to check if this request is still valid to continue. */
+ if (idev->working_request)
+ sci_controller_continue_io(idev->working_request);
}
-static enum sci_status scic_sds_smp_remote_device_ready_idle_substate_start_io_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
+enum sci_status sci_remote_device_start_task(struct isci_host *ihost,
+ struct isci_remote_device *idev,
+ struct isci_request *ireq)
{
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+ struct isci_port *iport = idev->owning_port;
enum sci_status status;
- /* Will the port allow the io request to start? */
- status = sci_dev->owning_port->state_handlers->start_io_handler(
- sci_dev->owning_port, sci_dev, sci_req);
- if (status != SCI_SUCCESS)
- return status;
+ switch (state) {
+ case SCI_DEV_INITIAL:
+ case SCI_DEV_STOPPED:
+ case SCI_DEV_STARTING:
+ case SCI_SMP_DEV_IDLE:
+ case SCI_SMP_DEV_CMD:
+ case SCI_DEV_STOPPING:
+ case SCI_DEV_FAILED:
+ case SCI_DEV_RESETTING:
+ case SCI_DEV_FINAL:
+ default:
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ case SCI_STP_DEV_IDLE:
+ case SCI_STP_DEV_CMD:
+ case SCI_STP_DEV_NCQ:
+ case SCI_STP_DEV_NCQ_ERROR:
+ case SCI_STP_DEV_AWAIT_RESET:
+ status = sci_port_start_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
- status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, sci_req);
- if (status != SCI_SUCCESS)
- goto out;
+ status = sci_remote_node_context_start_task(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ goto out;
- status = scic_sds_request_start(sci_req);
- if (status != SCI_SUCCESS)
- goto out;
+ status = sci_request_start(ireq);
+ if (status != SCI_SUCCESS)
+ goto out;
+
+ /* Note: If the remote device state is not IDLE this will
+ * replace the request that probably resulted in the task
+ * management request.
+ */
+ idev->working_request = ireq;
+ sci_change_state(sm, SCI_STP_DEV_CMD);
+
+ /* The remote node context must cleanup the TCi to NCQ mapping
+ * table. The only way to do this correctly is to either write
+ * to the TLCR register or to invalidate and repost the RNC. In
+ * either case the remote node context state machine will take
+ * the correct action when the remote node context is suspended
+ * and later resumed.
+ */
+ sci_remote_node_context_suspend(&idev->rnc,
+ SCI_SOFTWARE_SUSPENSION, NULL, NULL);
+ sci_remote_node_context_resume(&idev->rnc,
+ sci_remote_device_continue_request,
+ idev);
+
+ out:
+ sci_remote_device_start_request(idev, ireq, status);
+ /* We need to let the controller start request handler know that
+ * it can't post TC yet. We will provide a callback function to
+ * post TC when RNC gets resumed.
+ */
+ return SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS;
+ case SCI_DEV_READY:
+ status = sci_port_start_io(iport, idev, ireq);
+ if (status != SCI_SUCCESS)
+ return status;
- sci_dev->working_request = sci_req;
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD);
+ status = sci_remote_node_context_start_task(&idev->rnc, ireq);
+ if (status != SCI_SUCCESS)
+ break;
- out:
- scic_sds_remote_device_start_request(sci_dev, sci_req, status);
+ status = sci_request_start(ireq);
+ break;
+ }
+ sci_remote_device_start_request(idev, ireq, status);
return status;
}
-static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler(
- struct scic_sds_remote_device *device,
- struct scic_sds_request *request)
+void sci_remote_device_post_request(struct isci_remote_device *idev, u32 request)
{
- /* device is already handling a command it can not accept new commands
- * until this one is complete.
- */
- return SCI_FAILURE_INVALID_STATE;
-}
+ struct isci_port *iport = idev->owning_port;
+ u32 context;
-static enum sci_status
-scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler(struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- enum sci_status status;
+ context = request |
+ (ISCI_PEG << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ idev->rnc.remote_node_index;
- status = scic_sds_io_request_complete(sci_req);
- if (status != SCI_SUCCESS)
- return status;
+ sci_controller_post_request(iport->owning_controller, context);
+}
- status = scic_sds_port_complete_io(sci_dev->owning_port, sci_dev, sci_req);
- if (status != SCI_SUCCESS) {
- dev_err(scirdev_to_dev(sci_dev),
- "%s: SCIC SDS Remote Device 0x%p io request "
- "0x%p could not be completd on the port 0x%p "
- "failed with status %d.\n", __func__, sci_dev, sci_req,
- sci_dev->owning_port, status);
- return status;
- }
+/* called once the remote node context has transisitioned to a
+ * ready state. This is the indication that the remote device object can also
+ * transition to ready.
+ */
+static void remote_device_resume_done(void *_dev)
+{
+ struct isci_remote_device *idev = _dev;
- scic_sds_remote_device_decrement_request_count(sci_dev);
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
+ if (is_remote_device_ready(idev))
+ return;
- return status;
+ /* go 'ready' if we are not already in a ready state */
+ sci_change_state(&idev->sm, SCI_DEV_READY);
}
-static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_frame_handler(
- struct scic_sds_remote_device *sci_dev,
- u32 frame_index)
+static void sci_stp_remote_device_ready_idle_substate_resume_complete_handler(void *_dev)
{
- enum sci_status status;
+ struct isci_remote_device *idev = _dev;
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- /* The device does not process any UF received from the hardware while
- * in this state. All unsolicited frames are forwarded to the io request
- * object.
+ /* For NCQ operation we do not issue a isci_remote_device_not_ready().
+ * As a result, avoid sending the ready notification.
*/
- status = scic_sds_io_request_frame_handler(
- sci_dev->working_request,
- frame_index
- );
-
- return status;
+ if (idev->sm.previous_state_id != SCI_STP_DEV_NCQ)
+ isci_remote_device_ready(ihost, idev);
}
-static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = {
- [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_default_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_default_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_ready_state_start_io_handler,
- .complete_io_handler = scic_sds_remote_device_ready_state_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_ready_state_start_task_handler,
- .complete_task_handler = scic_sds_remote_device_ready_state_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler,
- },
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_stp_remote_device_ready_idle_substate_start_io_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_stp_remote_device_ready_idle_substate_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- },
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler,
- .complete_io_handler = scic_sds_stp_remote_device_complete_request,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
- .complete_task_handler = scic_sds_stp_remote_device_complete_request,
- .suspend_handler = scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler
- },
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler,
- .complete_io_handler = scic_sds_stp_remote_device_complete_request,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
- .complete_task_handler = scic_sds_stp_remote_device_complete_request,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler
- },
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_stp_remote_device_complete_request,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
- .complete_task_handler = scic_sds_stp_remote_device_complete_request,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler
- },
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = {
- .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,
- .reset_handler = scic_sds_remote_device_ready_state_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler,
- .complete_io_handler = scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
- .complete_task_handler = scic_sds_stp_remote_device_complete_request,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler
- },
- [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_smp_remote_device_ready_idle_substate_start_io_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- },
- [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler,
- .complete_io_handler = scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_general_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_default_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_resetting_state_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_default_event_handler,
- .frame_handler = scic_sds_remote_device_general_frame_handler
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
- .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,
- .reset_handler = scic_sds_remote_device_default_reset_handler,
- .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
- .start_io_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
- .continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
- .complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
- .suspend_handler = scic_sds_remote_device_default_suspend_handler,
- .resume_handler = scic_sds_remote_device_default_resume_handler,
- .event_handler = scic_sds_remote_device_default_event_handler,
- .frame_handler = scic_sds_remote_device_default_frame_handler
- }
-};
-
-static void scic_sds_remote_device_initial_state_enter(void *object)
+static void sci_remote_device_initial_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_INITIAL);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
/* Initial state is a transitional state to the stopped state */
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
+ sci_change_state(&idev->sm, SCI_DEV_STOPPED);
}
/**
- * scic_remote_device_destruct() - free remote node context and destruct
+ * sci_remote_device_destruct() - free remote node context and destruct
* @remote_device: This parameter specifies the remote device to be destructed.
*
* Remote device objects are a limited resource. As such, they must be
* device isn't valid (e.g. it's already been destoryed, the handle isn't
* valid, etc.).
*/
-static enum sci_status scic_remote_device_destruct(struct scic_sds_remote_device *sci_dev)
+static enum sci_status sci_remote_device_destruct(struct isci_remote_device *idev)
{
- return sci_dev->state_handlers->destruct_handler(sci_dev);
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_remote_device_states state = sm->current_state_id;
+ struct isci_host *ihost;
+
+ if (state != SCI_DEV_STOPPED) {
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+ __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ }
+
+ ihost = idev->owning_port->owning_controller;
+ sci_controller_free_remote_node_context(ihost, idev,
+ idev->rnc.remote_node_index);
+ idev->rnc.remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
+ sci_change_state(sm, SCI_DEV_FINAL);
+
+ return SCI_SUCCESS;
}
/**
* here should go through isci_remote_device_nuke_requests.
* If we hit this condition, we will need a way to complete
* io requests in process */
- while (!list_empty(&idev->reqs_in_process)) {
+ BUG_ON(!list_empty(&idev->reqs_in_process));
- dev_err(&ihost->pdev->dev,
- "%s: ** request list not empty! **\n", __func__);
- BUG();
- }
-
- scic_remote_device_destruct(&idev->sci);
- idev->domain_dev->lldd_dev = NULL;
- idev->domain_dev = NULL;
- idev->isci_port = NULL;
+ sci_remote_device_destruct(idev);
list_del_init(&idev->node);
-
- clear_bit(IDEV_START_PENDING, &idev->flags);
- clear_bit(IDEV_STOP_PENDING, &idev->flags);
- wake_up(&ihost->eventq);
-}
-
-/**
- * isci_remote_device_stop_complete() - This function is called by the scic
- * when the remote device stop has completed. We mark the isci device as not
- * ready and remove the isci remote device.
- * @ihost: This parameter specifies the isci host object.
- * @idev: This parameter specifies the remote device.
- * @status: This parameter specifies status of the completion.
- *
- */
-static void isci_remote_device_stop_complete(struct isci_host *ihost,
- struct isci_remote_device *idev)
-{
- dev_dbg(&ihost->pdev->dev, "%s: complete idev = %p\n", __func__, idev);
-
- isci_remote_device_change_state(idev, isci_stopped);
-
- /* after stop, we can tear down resources. */
- isci_remote_device_deconstruct(ihost, idev);
+ isci_put_device(idev);
}
-static void scic_sds_remote_device_stopped_state_enter(void *object)
+static void sci_remote_device_stopped_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic;
- struct isci_remote_device *idev;
- struct isci_host *ihost;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
u32 prev_state;
- scic = scic_sds_remote_device_get_controller(sci_dev);
- ihost = scic->ihost;
- idev = sci_dev_to_idev(sci_dev);
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
-
/* If we are entering from the stopping state let the SCI User know that
* the stop operation has completed.
*/
- prev_state = sci_dev->state_machine.previous_state_id;
- if (prev_state == SCI_BASE_REMOTE_DEVICE_STATE_STOPPING)
- isci_remote_device_stop_complete(ihost, idev);
+ prev_state = idev->sm.previous_state_id;
+ if (prev_state == SCI_DEV_STOPPING)
+ isci_remote_device_deconstruct(ihost, idev);
- scic_sds_controller_remote_device_stopped(scic, sci_dev);
+ sci_controller_remote_device_stopped(ihost, idev);
}
-static void scic_sds_remote_device_starting_state_enter(void *object)
+static void sci_remote_device_starting_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
- struct isci_host *ihost = scic->ihost;
- struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED);
}
-static void scic_sds_remote_device_ready_state_enter(void *object)
+static void sci_remote_device_ready_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
-
- SET_STATE_HANDLER(sci_dev,
- scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_READY);
-
- scic->remote_device_sequence[sci_dev->rnc.remote_node_index]++;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
+ struct domain_device *dev = idev->domain_dev;
if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_SATA)) {
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
+ sci_change_state(&idev->sm, SCI_STP_DEV_IDLE);
} else if (dev_is_expander(dev)) {
- sci_base_state_machine_change_state(&sci_dev->state_machine,
- SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
+ sci_change_state(&idev->sm, SCI_SMP_DEV_IDLE);
} else
- isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev));
+ isci_remote_device_ready(ihost, idev);
}
-static void scic_sds_remote_device_ready_state_exit(void *object)
+static void sci_remote_device_ready_state_exit(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct domain_device *dev = idev->domain_dev;
if (dev->dev_type == SAS_END_DEV) {
- struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
- struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- isci_remote_device_not_ready(scic->ihost, idev,
+ isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED);
}
}
-static void scic_sds_remote_device_stopping_state_enter(void *object)
-{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(
- sci_dev,
- scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
- );
-}
-
-static void scic_sds_remote_device_failed_state_enter(void *object)
-{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(
- sci_dev,
- scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_FAILED
- );
-}
-
-static void scic_sds_remote_device_resetting_state_enter(void *object)
-{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(
- sci_dev,
- scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_RESETTING
- );
-
- scic_sds_remote_node_context_suspend(
- &sci_dev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL);
-}
-
-static void scic_sds_remote_device_resetting_state_exit(void *object)
+static void sci_remote_device_resetting_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
- scic_sds_remote_node_context_resume(&sci_dev->rnc, NULL, NULL);
+ sci_remote_node_context_suspend(
+ &idev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL);
}
-static void scic_sds_remote_device_final_state_enter(void *object)
+static void sci_remote_device_resetting_state_exit(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
- SET_STATE_HANDLER(
- sci_dev,
- scic_sds_remote_device_state_handler_table,
- SCI_BASE_REMOTE_DEVICE_STATE_FINAL
- );
+ sci_remote_node_context_resume(&idev->rnc, NULL, NULL);
}
-static void scic_sds_stp_remote_device_ready_idle_substate_enter(void *object)
+static void sci_stp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
- sci_dev->working_request = NULL;
- if (scic_sds_remote_node_context_is_ready(&sci_dev->rnc)) {
+ idev->working_request = NULL;
+ if (sci_remote_node_context_is_ready(&idev->rnc)) {
/*
* Since the RNC is ready, it's alright to finish completion
* processing (e.g. signal the remote device is ready). */
- scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler(sci_dev);
+ sci_stp_remote_device_ready_idle_substate_resume_complete_handler(idev);
} else {
- scic_sds_remote_node_context_resume(&sci_dev->rnc,
- scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler,
- sci_dev);
+ sci_remote_node_context_resume(&idev->rnc,
+ sci_stp_remote_device_ready_idle_substate_resume_complete_handler,
+ idev);
}
}
-static void scic_sds_stp_remote_device_ready_cmd_substate_enter(void *object)
+static void sci_stp_remote_device_ready_cmd_substate_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- BUG_ON(sci_dev->working_request == NULL);
+ BUG_ON(idev->working_request == NULL);
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD);
-
- isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev),
+ isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED);
}
-static void scic_sds_stp_remote_device_ready_ncq_substate_enter(void *object)
-{
- struct scic_sds_remote_device *sci_dev = object;
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ);
-}
-
-static void scic_sds_stp_remote_device_ready_ncq_error_substate_enter(void *object)
-{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
- struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR);
-
- if (sci_dev->not_ready_reason == SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED)
- isci_remote_device_not_ready(scic->ihost, idev,
- sci_dev->not_ready_reason);
-}
-
-static void scic_sds_stp_remote_device_ready_await_reset_substate_enter(void *object)
+static void sci_stp_remote_device_ready_ncq_error_substate_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET);
+ if (idev->not_ready_reason == SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED)
+ isci_remote_device_not_ready(ihost, idev,
+ idev->not_ready_reason);
}
-static void scic_sds_smp_remote_device_ready_idle_substate_enter(void *object)
+static void sci_smp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
-
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev));
+ isci_remote_device_ready(ihost, idev);
}
-static void scic_sds_smp_remote_device_ready_cmd_substate_enter(void *object)
+static void sci_smp_remote_device_ready_cmd_substate_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
- struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+ struct isci_host *ihost = idev->owning_port->owning_controller;
- BUG_ON(sci_dev->working_request == NULL);
+ BUG_ON(idev->working_request == NULL);
- SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
- SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD);
-
- isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev),
+ isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED);
}
-static void scic_sds_smp_remote_device_ready_cmd_substate_exit(void *object)
+static void sci_smp_remote_device_ready_cmd_substate_exit(struct sci_base_state_machine *sm)
{
- struct scic_sds_remote_device *sci_dev = object;
+ struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
- sci_dev->working_request = NULL;
+ idev->working_request = NULL;
}
-static const struct sci_base_state scic_sds_remote_device_state_table[] = {
- [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
- .enter_state = scic_sds_remote_device_initial_state_enter,
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
- .enter_state = scic_sds_remote_device_stopped_state_enter,
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
- .enter_state = scic_sds_remote_device_starting_state_enter,
+static const struct sci_base_state sci_remote_device_state_table[] = {
+ [SCI_DEV_INITIAL] = {
+ .enter_state = sci_remote_device_initial_state_enter,
},
- [SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
- .enter_state = scic_sds_remote_device_ready_state_enter,
- .exit_state = scic_sds_remote_device_ready_state_exit
+ [SCI_DEV_STOPPED] = {
+ .enter_state = sci_remote_device_stopped_state_enter,
},
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .enter_state = scic_sds_stp_remote_device_ready_idle_substate_enter,
+ [SCI_DEV_STARTING] = {
+ .enter_state = sci_remote_device_starting_state_enter,
},
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .enter_state = scic_sds_stp_remote_device_ready_cmd_substate_enter,
+ [SCI_DEV_READY] = {
+ .enter_state = sci_remote_device_ready_state_enter,
+ .exit_state = sci_remote_device_ready_state_exit
},
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = {
- .enter_state = scic_sds_stp_remote_device_ready_ncq_substate_enter,
+ [SCI_STP_DEV_IDLE] = {
+ .enter_state = sci_stp_remote_device_ready_idle_substate_enter,
},
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = {
- .enter_state = scic_sds_stp_remote_device_ready_ncq_error_substate_enter,
+ [SCI_STP_DEV_CMD] = {
+ .enter_state = sci_stp_remote_device_ready_cmd_substate_enter,
},
- [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = {
- .enter_state = scic_sds_stp_remote_device_ready_await_reset_substate_enter,
+ [SCI_STP_DEV_NCQ] = { },
+ [SCI_STP_DEV_NCQ_ERROR] = {
+ .enter_state = sci_stp_remote_device_ready_ncq_error_substate_enter,
},
- [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .enter_state = scic_sds_smp_remote_device_ready_idle_substate_enter,
+ [SCI_STP_DEV_AWAIT_RESET] = { },
+ [SCI_SMP_DEV_IDLE] = {
+ .enter_state = sci_smp_remote_device_ready_idle_substate_enter,
},
- [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .enter_state = scic_sds_smp_remote_device_ready_cmd_substate_enter,
- .exit_state = scic_sds_smp_remote_device_ready_cmd_substate_exit,
+ [SCI_SMP_DEV_CMD] = {
+ .enter_state = sci_smp_remote_device_ready_cmd_substate_enter,
+ .exit_state = sci_smp_remote_device_ready_cmd_substate_exit,
},
- [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
- .enter_state = scic_sds_remote_device_stopping_state_enter,
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
- .enter_state = scic_sds_remote_device_failed_state_enter,
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
- .enter_state = scic_sds_remote_device_resetting_state_enter,
- .exit_state = scic_sds_remote_device_resetting_state_exit
- },
- [SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
- .enter_state = scic_sds_remote_device_final_state_enter,
+ [SCI_DEV_STOPPING] = { },
+ [SCI_DEV_FAILED] = { },
+ [SCI_DEV_RESETTING] = {
+ .enter_state = sci_remote_device_resetting_state_enter,
+ .exit_state = sci_remote_device_resetting_state_exit
},
+ [SCI_DEV_FINAL] = { },
};
/**
- * scic_remote_device_construct() - common construction
+ * sci_remote_device_construct() - common construction
* @sci_port: SAS/SATA port through which this device is accessed.
* @sci_dev: remote device to construct
*
* This routine just performs benign initialization and does not
* allocate the remote_node_context which is left to
- * scic_remote_device_[de]a_construct(). scic_remote_device_destruct()
+ * sci_remote_device_[de]a_construct(). sci_remote_device_destruct()
* frees the remote_node_context(s) for the device.
*/
-static void scic_remote_device_construct(struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev)
+static void sci_remote_device_construct(struct isci_port *iport,
+ struct isci_remote_device *idev)
{
- sci_dev->owning_port = sci_port;
- sci_dev->started_request_count = 0;
-
- sci_base_state_machine_construct(
- &sci_dev->state_machine,
- sci_dev,
- scic_sds_remote_device_state_table,
- SCI_BASE_REMOTE_DEVICE_STATE_INITIAL
- );
+ idev->owning_port = iport;
+ idev->started_request_count = 0;
- sci_base_state_machine_start(
- &sci_dev->state_machine
- );
+ sci_init_sm(&idev->sm, sci_remote_device_state_table, SCI_DEV_INITIAL);
- scic_sds_remote_node_context_construct(&sci_dev->rnc,
+ sci_remote_node_context_construct(&idev->rnc,
SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
}
/**
- * scic_remote_device_da_construct() - construct direct attached device.
+ * sci_remote_device_da_construct() - construct direct attached device.
*
* The information (e.g. IAF, Signature FIS, etc.) necessary to build
* the device is known to the SCI Core since it is contained in the
- * scic_phy object. Remote node context(s) is/are a global resource
- * allocated by this routine, freed by scic_remote_device_destruct().
+ * sci_phy object. Remote node context(s) is/are a global resource
+ * allocated by this routine, freed by sci_remote_device_destruct().
*
* Returns:
* SCI_FAILURE_DEVICE_EXISTS - device has already been constructed.
* sata-only controller instance.
* SCI_FAILURE_INSUFFICIENT_RESOURCES - remote node contexts exhausted.
*/
-static enum sci_status scic_remote_device_da_construct(struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev)
+static enum sci_status sci_remote_device_da_construct(struct isci_port *iport,
+ struct isci_remote_device *idev)
{
enum sci_status status;
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
+ struct domain_device *dev = idev->domain_dev;
- scic_remote_device_construct(sci_port, sci_dev);
+ sci_remote_device_construct(iport, idev);
/*
* This information is request to determine how many remote node context
* entries will be needed to store the remote node.
*/
- sci_dev->is_direct_attached = true;
- status = scic_sds_controller_allocate_remote_node_context(sci_port->owning_controller,
- sci_dev,
- &sci_dev->rnc.remote_node_index);
+ idev->is_direct_attached = true;
+ status = sci_controller_allocate_remote_node_context(iport->owning_controller,
+ idev,
+ &idev->rnc.remote_node_index);
if (status != SCI_SUCCESS)
return status;
else
return SCI_FAILURE_UNSUPPORTED_PROTOCOL;
- sci_dev->connection_rate = scic_sds_port_get_max_allowed_speed(sci_port);
+ idev->connection_rate = sci_port_get_max_allowed_speed(iport);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
- sci_dev->device_port_width = 1;
+ idev->device_port_width = 1;
return SCI_SUCCESS;
}
/**
- * scic_remote_device_ea_construct() - construct expander attached device
+ * sci_remote_device_ea_construct() - construct expander attached device
*
* Remote node context(s) is/are a global resource allocated by this
- * routine, freed by scic_remote_device_destruct().
+ * routine, freed by sci_remote_device_destruct().
*
* Returns:
* SCI_FAILURE_DEVICE_EXISTS - device has already been constructed.
* sata-only controller instance.
* SCI_FAILURE_INSUFFICIENT_RESOURCES - remote node contexts exhausted.
*/
-static enum sci_status scic_remote_device_ea_construct(struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev)
+static enum sci_status sci_remote_device_ea_construct(struct isci_port *iport,
+ struct isci_remote_device *idev)
{
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
+ struct domain_device *dev = idev->domain_dev;
enum sci_status status;
- scic_remote_device_construct(sci_port, sci_dev);
+ sci_remote_device_construct(iport, idev);
- status = scic_sds_controller_allocate_remote_node_context(sci_port->owning_controller,
- sci_dev,
- &sci_dev->rnc.remote_node_index);
+ status = sci_controller_allocate_remote_node_context(iport->owning_controller,
+ idev,
+ &idev->rnc.remote_node_index);
if (status != SCI_SUCCESS)
return status;
* connection the logical link rate is that same as the
* physical. Furthermore, the SAS-2 and SAS-1.1 fields overlay
* one another, so this code works for both situations. */
- sci_dev->connection_rate = min_t(u16, scic_sds_port_get_max_allowed_speed(sci_port),
+ idev->connection_rate = min_t(u16, sci_port_get_max_allowed_speed(iport),
dev->linkrate);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
- sci_dev->device_port_width = 1;
+ idev->device_port_width = 1;
return SCI_SUCCESS;
}
/**
- * scic_remote_device_start() - This method will start the supplied remote
+ * sci_remote_device_start() - This method will start the supplied remote
* device. This method enables normal IO requests to flow through to the
* remote device.
* @remote_device: This parameter specifies the device to be started.
* SCI_FAILURE_INVALID_PHY This value is returned if the user attempts to start
* the device when there have been no phys added to it.
*/
-static enum sci_status scic_remote_device_start(struct scic_sds_remote_device *sci_dev,
+static enum sci_status sci_remote_device_start(struct isci_remote_device *idev,
u32 timeout)
{
- struct sci_base_state_machine *sm = &sci_dev->state_machine;
- enum scic_sds_remote_device_states state = sm->current_state_id;
+ struct sci_base_state_machine *sm = &idev->sm;
+ enum sci_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",
+ if (state != SCI_DEV_STOPPED) {
+ dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
__func__, state);
return SCI_FAILURE_INVALID_STATE;
}
- status = scic_sds_remote_node_context_resume(&sci_dev->rnc,
+ status = sci_remote_node_context_resume(&idev->rnc,
remote_device_resume_done,
- sci_dev);
+ idev);
if (status != SCI_SUCCESS)
return status;
- sci_base_state_machine_change_state(sm, SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
+ sci_change_state(sm, SCI_DEV_STARTING);
return SCI_SUCCESS;
}
static enum sci_status isci_remote_device_construct(struct isci_port *iport,
struct isci_remote_device *idev)
{
- struct scic_sds_port *sci_port = iport->sci_port_handle;
struct isci_host *ihost = iport->isci_host;
struct domain_device *dev = idev->domain_dev;
enum sci_status status;
if (dev->parent && dev_is_expander(dev->parent))
- status = scic_remote_device_ea_construct(sci_port, &idev->sci);
+ status = sci_remote_device_ea_construct(iport, idev);
else
- status = scic_remote_device_da_construct(sci_port, &idev->sci);
+ status = sci_remote_device_da_construct(iport, idev);
if (status != SCI_SUCCESS) {
dev_dbg(&ihost->pdev->dev, "%s: construct failed: %d\n",
}
/* start the device. */
- status = scic_remote_device_start(&idev->sci, ISCI_REMOTE_DEVICE_START_TIMEOUT);
+ status = sci_remote_device_start(idev, ISCI_REMOTE_DEVICE_START_TIMEOUT);
if (status != SCI_SUCCESS)
dev_warn(&ihost->pdev->dev, "remote device start failed: %d\n",
"%s: idev = %p\n", __func__, idev);
/* Cleanup all requests pending for this device. */
- isci_terminate_pending_requests(ihost, idev, terminating);
+ isci_terminate_pending_requests(ihost, idev);
dev_dbg(&ihost->pdev->dev,
"%s: idev = %p, done\n", __func__, idev);
if (WARN_ONCE(!list_empty(&idev->node), "found non-idle remote device\n"))
return NULL;
- isci_remote_device_change_state(idev, isci_freed);
-
return idev;
}
+void isci_remote_device_release(struct kref *kref)
+{
+ struct isci_remote_device *idev = container_of(kref, typeof(*idev), kref);
+ struct isci_host *ihost = idev->isci_port->isci_host;
+
+ idev->domain_dev = NULL;
+ idev->isci_port = NULL;
+ clear_bit(IDEV_START_PENDING, &idev->flags);
+ clear_bit(IDEV_STOP_PENDING, &idev->flags);
+ clear_bit(IDEV_IO_READY, &idev->flags);
+ clear_bit(IDEV_GONE, &idev->flags);
+ clear_bit(IDEV_EH, &idev->flags);
+ smp_mb__before_clear_bit();
+ clear_bit(IDEV_ALLOCATED, &idev->flags);
+ wake_up(&ihost->eventq);
+}
+
/**
* isci_remote_device_stop() - This function is called internally to stop the
* remote device.
* @isci_host: This parameter specifies the isci host object.
* @isci_device: This parameter specifies the remote device.
*
- * The status of the scic request to stop.
+ * The status of the ihost request to stop.
*/
enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
{
dev_dbg(&ihost->pdev->dev,
"%s: isci_device = %p\n", __func__, idev);
- isci_remote_device_change_state(idev, isci_stopping);
+ spin_lock_irqsave(&ihost->scic_lock, flags);
+ idev->domain_dev->lldd_dev = NULL; /* disable new lookups */
+ set_bit(IDEV_GONE, &idev->flags);
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
/* Kill all outstanding requests. */
isci_remote_device_nuke_requests(ihost, idev);
set_bit(IDEV_STOP_PENDING, &idev->flags);
spin_lock_irqsave(&ihost->scic_lock, flags);
- status = scic_remote_device_stop(&idev->sci, 50);
+ status = sci_remote_device_stop(idev, 50);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
/* Wait for the stop complete callback. */
- if (status == SCI_SUCCESS) {
+ if (WARN_ONCE(status != SCI_SUCCESS, "failed to stop device\n"))
+ /* nothing to wait for */;
+ else
wait_for_device_stop(ihost, idev);
- clear_bit(IDEV_ALLOCATED, &idev->flags);
- }
-
- dev_dbg(&ihost->pdev->dev,
- "%s: idev = %p - after completion wait\n",
- __func__, idev);
return status;
}
sas_port = domain_dev->port;
sas_phy = list_first_entry(&sas_port->phy_list, struct asd_sas_phy,
port_phy_el);
- isci_phy = to_isci_phy(sas_phy);
+ isci_phy = to_iphy(sas_phy);
isci_port = isci_phy->isci_port;
/* we are being called for a device on this port,
if (!isci_device)
return -ENODEV;
+ kref_init(&isci_device->kref);
INIT_LIST_HEAD(&isci_device->node);
- domain_dev->lldd_dev = isci_device;
- isci_device->domain_dev = domain_dev;
- isci_device->isci_port = isci_port;
- isci_remote_device_change_state(isci_device, isci_starting);
-
spin_lock_irq(&isci_host->scic_lock);
+ isci_device->domain_dev = domain_dev;
+ isci_device->isci_port = isci_port;
list_add_tail(&isci_device->node, &isci_port->remote_dev_list);
set_bit(IDEV_START_PENDING, &isci_device->flags);
status = isci_remote_device_construct(isci_port, isci_device);
- spin_unlock_irq(&isci_host->scic_lock);
dev_dbg(&isci_host->pdev->dev,
"%s: isci_device = %p\n",
__func__, isci_device);
- if (status != SCI_SUCCESS) {
-
- spin_lock_irq(&isci_host->scic_lock);
- isci_remote_device_deconstruct(
- isci_host,
- isci_device
- );
- spin_unlock_irq(&isci_host->scic_lock);
- return -ENODEV;
- }
+ if (status == SCI_SUCCESS) {
+ /* device came up, advertise it to the world */
+ domain_dev->lldd_dev = isci_device;
+ } else
+ isci_put_device(isci_device);
+ spin_unlock_irq(&isci_host->scic_lock);
/* wait for the device ready callback. */
wait_for_device_start(isci_host, isci_device);
- return 0;
+ return status == SCI_SUCCESS ? 0 : -ENODEV;
}
/**
* isci_device_is_reset_pending() - This function will check if there is any
git.openpandora.org / pandora-kernel.git / blobdiff