forked from Minki/linux
isci: controller stop/start fixes
Core reworks to support stopping and re-starting the controller, lays the groundwork for phy disable / re-enable and fixes other bugs around port/phy setup/teardown. Signed-off-by: Pawel Marek <pawel.marek@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Pawel Marek
Dan Williams
parent
3ff0121a70
commit
c658b109d3
@ -252,7 +252,7 @@ static void scic_sds_controller_phy_startup_timeout_handler(
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*
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* This method initializes the phy startup operations for controller start.
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*/
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void scic_sds_controller_initialize_phy_startup(
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enum sci_status scic_sds_controller_initialize_phy_startup(
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struct scic_sds_controller *this_controller)
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{
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this_controller->phy_startup_timer = isci_event_timer_create(
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@ -261,8 +261,14 @@ void scic_sds_controller_initialize_phy_startup(
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this_controller
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);
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this_controller->next_phy_to_start = 0;
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this_controller->phy_startup_timer_pending = false;
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if (this_controller->phy_startup_timer == NULL) {
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return SCI_FAILURE_INSUFFICIENT_RESOURCES;
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} else {
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this_controller->next_phy_to_start = 0;
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this_controller->phy_startup_timer_pending = false;
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}
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return SCI_SUCCESS;
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}
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/**
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@ -305,7 +311,7 @@ void scic_sds_controller_initialize_power_control(
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* to build the memory table.
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*
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*/
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static void scic_sds_controller_build_memory_descriptor_table(
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void scic_sds_controller_build_memory_descriptor_table(
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struct scic_sds_controller *this_controller)
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{
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sci_base_mde_construct(
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@ -1698,6 +1704,91 @@ void scic_sds_controller_link_down(
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scic)));
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}
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/**
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* This method is called by the remote device to inform the controller
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* that this remote device has started.
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*
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*/
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void scic_sds_controller_remote_device_started(
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struct scic_sds_controller *this_controller,
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struct scic_sds_remote_device *the_device)
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{
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u32 state;
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scic_sds_controller_device_handler_t remote_device_started_handler;
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state = this_controller->parent.state_machine.current_state_id;
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remote_device_started_handler = scic_sds_controller_state_handler_table[state].remote_device_started_handler;
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if (remote_device_started_handler != NULL)
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remote_device_started_handler(this_controller, the_device);
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else {
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dev_warn(scic_to_dev(this_controller),
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"%s: SCIC Controller 0x%p remote device started event "
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"from device 0x%p in unexpected state %d\n",
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__func__,
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this_controller,
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the_device,
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sci_base_state_machine_get_state(
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scic_sds_controller_get_base_state_machine(
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this_controller)));
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}
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}
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/**
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* This is a helper method to determine if any remote devices on this
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* controller are still in the stopping state.
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*
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*/
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bool scic_sds_controller_has_remote_devices_stopping(
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struct scic_sds_controller *this_controller)
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{
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u32 index;
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for (index = 0; index < this_controller->remote_node_entries; index++) {
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if ((this_controller->device_table[index] != NULL) &&
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(this_controller->device_table[index]->parent.state_machine.current_state_id
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== SCI_BASE_REMOTE_DEVICE_STATE_STOPPING))
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return true;
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}
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return false;
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}
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/**
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* This method is called by the remote device to inform the controller
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* object that the remote device has stopped.
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*
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*/
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void scic_sds_controller_remote_device_stopped(
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struct scic_sds_controller *this_controller,
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struct scic_sds_remote_device *the_device)
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{
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u32 state;
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scic_sds_controller_device_handler_t remote_device_stopped_handler;
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state = this_controller->parent.state_machine.current_state_id;
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remote_device_stopped_handler = scic_sds_controller_state_handler_table[state].remote_device_stopped_handler;
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if (remote_device_stopped_handler != NULL)
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remote_device_stopped_handler(this_controller, the_device);
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else {
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dev_warn(scic_to_dev(this_controller),
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"%s: SCIC Controller 0x%p remote device stopped event "
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"from device 0x%p in unexpected state %d\n",
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__func__,
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this_controller,
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the_device,
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sci_base_state_machine_get_state(
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scic_sds_controller_get_base_state_machine(
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this_controller)));
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}
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}
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/**
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* This method will write to the SCU PCP register the request value. The method
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* is used to suspend/resume ports, devices, and phys.
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@ -3461,23 +3552,22 @@ static enum sci_status scic_sds_controller_stopping_state_complete_io_handler(
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* struct scic_sds_controller object.
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* @remote_device: This is struct sci_base_remote_device which is cast to a
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* struct scic_sds_remote_device object.
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* @io_request: This is the struct sci_base_request which is cast to a
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* SCIC_SDS_IO_REQUEST object.
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*
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* This method is called when the struct scic_sds_controller is in a stopping state
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* and the complete task handler is called. - This function is not yet
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* implemented enum sci_status SCI_FAILURE
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*/
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/*
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* *****************************************************************************
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* * STOPPED STATE HANDLERS
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* ***************************************************************************** */
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/*
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* *****************************************************************************
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* * FAILED STATE HANDLERS
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* ***************************************************************************** */
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* and the remote device has stopped.
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**/
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void scic_sds_controller_stopping_state_device_stopped_handler(
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struct scic_sds_controller *controller,
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struct scic_sds_remote_device *remote_device
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)
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{
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if (!scic_sds_controller_has_remote_devices_stopping(controller)) {
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sci_base_state_machine_change_state(
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&controller->parent.state_machine,
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SCI_BASE_CONTROLLER_STATE_STOPPED
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);
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}
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}
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const struct scic_sds_controller_state_handler scic_sds_controller_state_handler_table[] = {
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[SCI_BASE_CONTROLLER_STATE_INITIAL] = {
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@ -3537,6 +3627,7 @@ const struct scic_sds_controller_state_handler scic_sds_controller_state_handler
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.base.complete_io = scic_sds_controller_stopping_state_complete_io_handler,
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.base.continue_io = scic_sds_controller_default_request_handler,
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.terminate_request = scic_sds_controller_default_request_handler,
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.remote_device_stopped_handler = scic_sds_controller_stopping_state_device_stopped_handler,
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},
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[SCI_BASE_CONTROLLER_STATE_STOPPED] = {
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.base.reset = scic_sds_controller_general_reset_handler,
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@ -120,6 +120,7 @@ enum SCIC_SDS_CONTROLLER_MEMORY_DESCRIPTORS {
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SCU_MAX_MDES
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};
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/**
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*
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*
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@ -390,6 +391,11 @@ struct scic_sds_controller {
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typedef void (*scic_sds_controller_phy_handler_t)(struct scic_sds_controller *,
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struct scic_sds_port *,
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struct scic_sds_phy *);
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typedef void (*scic_sds_controller_device_handler_t)(struct scic_sds_controller *,
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struct scic_sds_remote_device *);
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/**
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* struct scic_sds_controller_state_handler -
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*
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@ -402,6 +408,8 @@ struct scic_sds_controller_state_handler {
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sci_base_controller_request_handler_t terminate_request;
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scic_sds_controller_phy_handler_t link_up;
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scic_sds_controller_phy_handler_t link_down;
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scic_sds_controller_device_handler_t remote_device_started_handler;
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scic_sds_controller_device_handler_t remote_device_stopped_handler;
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};
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extern const struct scic_sds_controller_state_handler
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@ -631,6 +639,23 @@ void scic_sds_controller_link_down(
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struct scic_sds_port *the_port,
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struct scic_sds_phy *the_phy);
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/*
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* *****************************************************************************
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* * CORE CONTROLLER REMOTE DEVICE MESSAGE PROCESSING
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* ***************************************************************************** */
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bool scic_sds_controller_has_remote_devices_stopping(
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struct scic_sds_controller *this_controller);
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void scic_sds_controller_remote_device_started(
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struct scic_sds_controller *this_controller,
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struct scic_sds_remote_device *the_device);
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void scic_sds_controller_remote_device_stopped(
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struct scic_sds_controller *this_controller,
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struct scic_sds_remote_device *the_device);
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/*
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* *****************************************************************************
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* * CORE CONTROLLER PRIVATE METHODS
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@ -688,8 +713,10 @@ void scic_sds_controller_register_setup(
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void scic_sds_controller_reset_hardware(
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struct scic_sds_controller *this_controller);
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enum sci_status scic_sds_controller_initialize_phy_startup(
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struct scic_sds_controller *this_controller);
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void scic_sds_controller_initialize_phy_startup(
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void scic_sds_controller_build_memory_descriptor_table(
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struct scic_sds_controller *this_controller);
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#endif /* _SCIC_SDS_CONTROLLER_H_ */
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@ -257,7 +257,7 @@ scic_sds_phy_link_layer_initialization(struct scic_sds_phy *sci_phy,
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* restart the starting substate machine since we dont know what has actually
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* happening.
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*/
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static void scic_sds_phy_sata_timeout(void *phy)
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void scic_sds_phy_sata_timeout(void *phy)
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{
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struct scic_sds_phy *sci_phy = phy;
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@ -303,6 +303,7 @@ void scic_sds_phy_construct(
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this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN;
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this_phy->link_layer_registers = NULL;
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this_phy->max_negotiated_speed = SCI_SAS_NO_LINK_RATE;
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this_phy->sata_timeout_timer = NULL;
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/* Clear out the identification buffer data */
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memset(&this_phy->phy_type, 0, sizeof(this_phy->phy_type));
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@ -365,8 +366,8 @@ void scic_sds_phy_set_port(
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*/
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enum sci_status scic_sds_phy_initialize(
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struct scic_sds_phy *sci_phy,
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struct scu_transport_layer_registers __iomem *transport_layer_registers,
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struct scu_link_layer_registers __iomem *link_layer_registers)
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struct scu_transport_layer_registers __iomem *transport_layer_registers,
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struct scu_link_layer_registers __iomem *link_layer_registers)
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{
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/* Create the SIGNATURE FIS Timeout timer for this phy */
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sci_phy->sata_timeout_timer = isci_event_timer_create(
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@ -757,6 +758,23 @@ static void scic_sds_phy_restart_starting_state(
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);
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}
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/* ****************************************************************************
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* SCIC SDS PHY general handlers
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************************************************************************** */
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static enum sci_status scic_sds_phy_starting_substate_general_stop_handler(
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struct sci_base_phy *phy)
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{
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struct scic_sds_phy *this_phy;
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this_phy = (struct scic_sds_phy *)phy;
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sci_base_state_machine_stop(&this_phy->starting_substate_machine);
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sci_base_state_machine_change_state(&phy->state_machine,
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SCI_BASE_PHY_STATE_STOPPED);
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return SCI_SUCCESS;
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}
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/*
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* *****************************************************************************
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* * SCIC SDS PHY EVENT_HANDLERS
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@ -1436,12 +1454,10 @@ static enum sci_status scic_sds_phy_starting_substate_await_sata_power_consume_p
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return SCI_SUCCESS;
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}
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/* --------------------------------------------------------------------------- */
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const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_table[] = {
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[SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1450,7 +1466,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1459,7 +1475,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1477,7 +1493,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1486,7 +1502,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1495,7 +1511,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1504,7 +1520,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -1513,7 +1529,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_starting_substate_await_sig_fis_frame_handler,
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@ -1522,7 +1538,7 @@ const struct scic_sds_phy_state_handler scic_sds_phy_starting_substate_handler_t
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},
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[SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL] = {
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.parent.start_handler = scic_sds_phy_default_start_handler,
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.parent.stop_handler = scic_sds_phy_default_stop_handler,
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.parent.stop_handler = scic_sds_phy_starting_substate_general_stop_handler,
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.parent.reset_handler = scic_sds_phy_default_reset_handler,
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.parent.destruct_handler = scic_sds_phy_default_destroy_handler,
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.frame_handler = scic_sds_phy_default_frame_handler,
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@ -2153,17 +2169,22 @@ enum sci_status scic_sds_phy_default_consume_power_handler(
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* start it. - The phy state machine is transitioned to the
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* SCI_BASE_PHY_STATE_STARTING. enum sci_status SCI_SUCCESS
|
||||
*/
|
||||
static enum sci_status scic_sds_phy_stopped_state_start_handler(
|
||||
struct sci_base_phy *phy)
|
||||
static enum sci_status scic_sds_phy_stopped_state_start_handler(struct sci_base_phy *phy)
|
||||
{
|
||||
struct scic_sds_phy *this_phy;
|
||||
|
||||
this_phy = (struct scic_sds_phy *)phy;
|
||||
|
||||
sci_base_state_machine_change_state(
|
||||
scic_sds_phy_get_base_state_machine(this_phy),
|
||||
SCI_BASE_PHY_STATE_STARTING
|
||||
);
|
||||
/* Create the SIGNATURE FIS Timeout timer for this phy */
|
||||
this_phy->sata_timeout_timer = isci_event_timer_create(
|
||||
scic_sds_phy_get_controller(this_phy),
|
||||
scic_sds_phy_sata_timeout, this_phy);
|
||||
|
||||
if (this_phy->sata_timeout_timer != NULL) {
|
||||
sci_base_state_machine_change_state(
|
||||
scic_sds_phy_get_base_state_machine(this_phy),
|
||||
SCI_BASE_PHY_STATE_STARTING);
|
||||
}
|
||||
|
||||
return SCI_SUCCESS;
|
||||
}
|
||||
@ -2185,7 +2206,7 @@ static enum sci_status scic_sds_phy_stopped_state_destroy_handler(
|
||||
|
||||
this_phy = (struct scic_sds_phy *)phy;
|
||||
|
||||
/* / @todo what do we actually need to do here? */
|
||||
/* @todo what do we actually need to do here? */
|
||||
return SCI_SUCCESS;
|
||||
}
|
||||
|
||||
@ -2500,7 +2521,7 @@ static void scic_sds_phy_initial_state_enter(
|
||||
|
||||
this_phy = (struct scic_sds_phy *)object;
|
||||
|
||||
scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_STOPPED);
|
||||
scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_INITIAL);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2512,18 +2533,24 @@ static void scic_sds_phy_initial_state_enter(
|
||||
* handlers for the phy object base state machine initial state. - The SCU
|
||||
* hardware is requested to stop the protocol engine. none
|
||||
*/
|
||||
static void scic_sds_phy_stopped_state_enter(
|
||||
struct sci_base_object *object)
|
||||
static void scic_sds_phy_stopped_state_enter(struct sci_base_object *object)
|
||||
{
|
||||
struct scic_sds_phy *this_phy;
|
||||
struct scic_sds_phy *sci_phy;
|
||||
|
||||
this_phy = (struct scic_sds_phy *)object;
|
||||
sci_phy = (struct scic_sds_phy *)object;
|
||||
|
||||
/* / @todo We need to get to the controller to place this PE in a reset state */
|
||||
|
||||
scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_STOPPED);
|
||||
scic_sds_phy_set_base_state_handlers(sci_phy, SCI_BASE_PHY_STATE_STOPPED);
|
||||
|
||||
scu_link_layer_stop_protocol_engine(this_phy);
|
||||
if (sci_phy->sata_timeout_timer != NULL) {
|
||||
isci_event_timer_destroy(scic_sds_phy_get_controller(sci_phy),
|
||||
sci_phy->sata_timeout_timer);
|
||||
|
||||
sci_phy->sata_timeout_timer = NULL;
|
||||
}
|
||||
|
||||
scu_link_layer_stop_protocol_engine(sci_phy);
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
@ -401,6 +401,9 @@ enum sci_status scic_sds_phy_stop(
|
||||
enum sci_status scic_sds_phy_reset(
|
||||
struct scic_sds_phy *this_phy);
|
||||
|
||||
void scic_sds_phy_sata_timeout(
|
||||
void *cookie);
|
||||
|
||||
/* --------------------------------------------------------------------------- */
|
||||
|
||||
void scic_sds_phy_suspend(
|
||||
|
||||
@ -625,27 +625,6 @@ enum sci_status scic_sds_port_initialize(
|
||||
this_port->port_pe_configuration_register = port_configuration_regsiter;
|
||||
this_port->viit_registers = viit_registers;
|
||||
|
||||
/*
|
||||
* If this is not the dummy port make the assignment of
|
||||
* the timer and start the state machine */
|
||||
if (this_port->physical_port_index != SCI_MAX_PORTS) {
|
||||
/* / @todo should we create the timer at create time? */
|
||||
this_port->timer_handle = isci_event_timer_create(
|
||||
scic_sds_port_get_controller(this_port),
|
||||
scic_sds_port_timeout_handler,
|
||||
this_port
|
||||
);
|
||||
|
||||
} else {
|
||||
/*
|
||||
* Force the dummy port into a condition where it rejects all requests
|
||||
* as its in an invalid state for any operation.
|
||||
* / @todo should we set a set of specical handlers for the dummy port? */
|
||||
scic_sds_port_set_base_state_handlers(
|
||||
this_port, SCI_BASE_PORT_STATE_STOPPED
|
||||
);
|
||||
}
|
||||
|
||||
return SCI_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
@ -1822,6 +1822,11 @@ static void scic_sds_remote_device_stopped_state_enter(
|
||||
SCI_SUCCESS
|
||||
);
|
||||
}
|
||||
|
||||
scic_sds_controller_remote_device_stopped(
|
||||
scic_sds_remote_device_get_controller(this_device),
|
||||
this_device
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1875,6 +1880,11 @@ static void scic_sds_remote_device_starting_state_exit(
|
||||
this_device,
|
||||
SCI_SUCCESS
|
||||
);
|
||||
|
||||
scic_sds_controller_remote_device_started(
|
||||
scic_sds_remote_device_get_controller(this_device),
|
||||
this_device
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
Loading…
Reference in New Issue
Block a user