static
SCI_STATUS scic_sds_remote_node_context_posting_state_event_handler(
struct SCIC_SDS_REMOTE_NODE_CONTEXT * this_rnc,
U32 event_code
)
{
SCI_STATUS status;
switch (scu_get_event_code(event_code))
{
case SCU_EVENT_POST_RNC_COMPLETE:
status = SCI_SUCCESS;
sci_base_state_machine_change_state(
&this_rnc->state_machine,
SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
);
break;
default:
status = SCI_FAILURE;
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_rnc->device),
SCIC_LOG_OBJECT_SSP_REMOTE_TARGET |
SCIC_LOG_OBJECT_SMP_REMOTE_TARGET |
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote Node Context 0x%x requested to process unexpected event 0x%x while in posting state\n",
this_rnc, event_code
));
break;
}
return status;
}
static
SCI_STATUS scic_sds_remote_node_context_resuming_state_event_handler(
struct SCIC_SDS_REMOTE_NODE_CONTEXT * this_rnc,
U32 event_code
)
{
SCI_STATUS status;
if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE)
{
status = SCI_SUCCESS;
sci_base_state_machine_change_state(
&this_rnc->state_machine,
SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
);
}
else
{
switch (scu_get_event_type(event_code))
{
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
// We really dont care if the hardware is going to suspend
// the device since it's being resumed anyway
SCIC_LOG_INFO((
sci_base_object_get_logger(this_rnc->device),
SCIC_LOG_OBJECT_SSP_REMOTE_TARGET |
SCIC_LOG_OBJECT_SMP_REMOTE_TARGET |
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote Node Context 0x%x was suspeneded by hardware while being resumed.\n",
this_rnc
));
status = SCI_SUCCESS;
break;
default:
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_rnc->device),
SCIC_LOG_OBJECT_SSP_REMOTE_TARGET |
SCIC_LOG_OBJECT_SMP_REMOTE_TARGET |
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote Node Context 0x%x requested to process event 0x%x while in state %d.\n",
this_rnc, event_code, sci_base_state_machine_get_state(&this_rnc->state_machine)
));
status = SCI_FAILURE;
break;
}
}
return status;
}
/**
* This method will handle events received while the STP device is in the
* ready command substate.
*
* @param [in] this_device This is the device object that is receiving the
* event.
* @param [in] event_code The event code to process.
*
* @return SCI_STATUS
*/
static
SCI_STATUS scic_sds_stp_remote_device_ready_ncq_substate_event_handler(
SCIC_SDS_REMOTE_DEVICE_T * this_device,
U32 event_code
)
{
SCI_STATUS status;
status = scic_sds_remote_device_general_event_handler(this_device, event_code);
switch (scu_get_event_code(event_code))
{
case SCU_EVENT_TL_RNC_SUSPEND_TX:
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
/// @todo We need to decode and understand why the hardware suspended the device.
/// The suspension reason was probably due to an SDB error FIS received.
break;
case SCU_EVENT_TL_RNC_SUSPEND_TX_DONE_DATA_LEN_ERR:
case SCU_EVENT_TL_RNC_SUSPEND_TX_DONE_OFFSET_ERR:
case SCU_EVENT_TL_RNC_SUSPEND_TX_DONE_DMASETUP_DIERR:
case SCU_EVENT_TL_RNC_SUSPEND_TX_DONE_XFERCNT_ERR:
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX_DONE_PLD_LEN_ERR:
this_device->not_ready_reason =
SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
sci_base_state_machine_change_state(
&this_device->ready_substate_machine,
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR
);
// We have a notification that the driver requested a suspend operation
// this should not happen.
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_device),
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote device 0x%x received driver suspend event %x while in ncq ready substate %d\n",
this_device, event_code, sci_base_state_machine_get_state(&this_device->ready_substate_machine)
));
// Since we didn't expect to get here start the device again.
status = scic_sds_remote_device_resume(this_device);
break;
case SCU_EVENT_POST_RCN_RELEASE:
/// @todo Do we need to store the suspend state on the device?
SCIC_LOG_INFO((
sci_base_object_get_logger(this_device),
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote device 0x%x received driver release event %x while in the ready substate %d\n",
this_device, event_code, sci_base_state_machine_get_state(&this_device->ready_substate_machine)
));
break;
default:
// Some other event just log it and continue
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_device),
SCIC_LOG_OBJECT_STP_REMOTE_TARGET,
"SCIC Remote device 0x%x received driver unexpected event %x while in the ready substate %d\n",
this_device, event_code, sci_base_state_machine_get_state(&this_device->ready_substate_machine)
));
status = SCI_FAILURE_INVALID_STATE;
break;
}
return status;
}
enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
u32 event_code)
{
enum scis_sds_remote_node_context_states state;
state = sci_rnc->sm.current_state_id;
switch (state) {
case SCI_RNC_POSTING:
switch (scu_get_event_code(event_code)) {
case SCU_EVENT_POST_RNC_COMPLETE:
sci_change_state(&sci_rnc->sm, SCI_RNC_READY);
break;
default:
goto out;
}
break;
case SCI_RNC_INVALIDATING:
if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) {
if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL)
state = SCI_RNC_INITIAL;
else
state = SCI_RNC_POSTING;
sci_change_state(&sci_rnc->sm, state);
} else {
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
/* We really dont care if the hardware is going to suspend
* the device since it's being invalidated anyway */
dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: SCIC Remote Node Context 0x%p was "
"suspeneded by hardware while being "
"invalidated.\n", __func__, sci_rnc);
break;
default:
goto out;
}
}
break;
case SCI_RNC_RESUMING:
if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE) {
sci_change_state(&sci_rnc->sm, SCI_RNC_READY);
} else {
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
/* We really dont care if the hardware is going to suspend
* the device since it's being resumed anyway */
dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: SCIC Remote Node Context 0x%p was "
"suspeneded by hardware while being resumed.\n",
__func__, sci_rnc);
break;
default:
goto out;
}
}
break;
case SCI_RNC_READY:
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TL_RNC_SUSPEND_TX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
sci_rnc->suspension_code = scu_get_event_specifier(event_code);
break;
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
sci_rnc->suspension_code = scu_get_event_specifier(event_code);
break;
default:
goto out;
}
break;
case SCI_RNC_AWAIT_SUSPENSION:
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TL_RNC_SUSPEND_TX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
sci_rnc->suspension_code = scu_get_event_specifier(event_code);
break;
case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
sci_rnc->suspension_code = scu_get_event_specifier(event_code);
break;
default:
goto out;
}
break;
default:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: invalid state %d\n", __func__, state);
return SCI_FAILURE_INVALID_STATE;
}
return SCI_SUCCESS;
out:
dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
"%s: code: %#x state: %d\n", __func__, event_code, state);
return SCI_FAILURE;
}
