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isci: Restore the ATAPI device RNC management code. 

The ATAPI specific and STP general RNC suspension code had been
incorrectly removed from the remote device code.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jeff Skirvin 2012-03-08 22:42:09 -08:00 committed by Dan Williams
parent 1f05388933
commit 87805162b6
3 changed files with 34 additions and 20 deletions
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49
drivers/scsi/isci/remote_device.c
View File

@ -72,8 +72,8 @@ const char *dev_state_name(enum sci_remote_device_states state)
}
#undef C
static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev,
enum sci_remote_node_suspension_reasons reason)
enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev,
enum sci_remote_node_suspension_reasons reason)
{
return sci_remote_node_context_suspend(&idev->rnc, reason,
SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT);
@ -565,6 +565,8 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev,
u32 event_code)
{
enum sci_status status;
struct sci_base_state_machine *sm = &idev->sm;
enum sci_remote_device_states state = sm->current_state_id;
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_OPS_MISC:
@ -603,6 +605,30 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev,
if (status != SCI_SUCCESS)
return status;
/* Decode device-specific states that may require an RNC resume during
* normal operation. When the abort path is active, these resumes are
* managed when the abort path exits.
*/
if (state == SCI_STP_DEV_ATAPI_ERROR) {
/* For ATAPI error state 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) {
return sci_remote_node_context_resume(&idev->rnc,
atapi_remote_device_resume_done,
idev);
}
}
if (state == SCI_STP_DEV_IDLE) {
/* 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);
}
return status;
}
@ -1137,21 +1163,6 @@ static void sci_stp_remote_device_ready_ncq_error_substate_enter(struct sci_base
idev->not_ready_reason);
}
static void sci_stp_remote_device_atapi_error_substate_enter(
struct sci_base_state_machine *sm)
{
struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
/* This state is entered when an I/O is decoded with an error
* condition. By this point the RNC expected suspension state is set.
* The error conditions suspend the device, so unsuspend here if
* possible.
*/
sci_remote_node_context_resume(&idev->rnc,
atapi_remote_device_resume_done,
idev);
}
static void sci_smp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm)
{
struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
@ -1202,9 +1213,7 @@ static const struct sci_base_state sci_remote_device_state_table[] = {
[SCI_STP_DEV_NCQ_ERROR] = {
.enter_state = sci_stp_remote_device_ready_ncq_error_substate_enter,
},
[SCI_STP_DEV_ATAPI_ERROR] = {
.enter_state = sci_stp_remote_device_atapi_error_substate_enter,
},
[SCI_STP_DEV_ATAPI_ERROR] = { },
[SCI_STP_DEV_AWAIT_RESET] = { },
[SCI_SMP_DEV_IDLE] = {
.enter_state = sci_smp_remote_device_ready_idle_substate_enter,

2
drivers/scsi/isci/remote_device.h
View File

@ -382,4 +382,6 @@ enum sci_status isci_remote_device_terminate_requests(
struct isci_host *ihost,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev,
enum sci_remote_node_suspension_reasons reason);
#endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */

3
drivers/scsi/isci/request.c
View File

@ -2118,6 +2118,9 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq
* completion.
*/
if (ireq->stp.rsp.fis_type == FIS_REGD2H) {
sci_remote_device_suspend(ireq->target_device,
SCI_SW_SUSPEND_NORMAL);
ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);