isci: remove scic_controller_get_handler_methods and ilk
This removes scic_controller_get_handler_methods and its associated unused code. Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com> [djbw: kill off the legacy handler, now that we have basic error isr support] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
parent
83f5eeef59
commit
5d147e7383
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@ -80,62 +80,6 @@ enum sci_controller_mode {
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};
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/**
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* enum _SCIC_INTERRUPT_TYPE - This enumeration depicts the various types of
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* interrupts that are potentially supported by a SCI Core implementation.
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*
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*
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*/
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enum scic_interrupt_type {
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SCIC_LEGACY_LINE_INTERRUPT_TYPE,
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SCIC_MSIX_INTERRUPT_TYPE,
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/**
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* This enumeration value indicates the use of polling.
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*/
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SCIC_NO_INTERRUPTS
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};
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/**
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* This method is called by the SCI user in order to have the SCI
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* implementation handle the interrupt. This method performs minimal
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* processing to allow for streamlined interrupt time usage.
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*
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* SCIC_CONTROLLER_INTERRUPT_HANDLER true: returned if there is an interrupt to
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* process and it was processed. false: returned if no interrupt was processed.
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*/
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typedef bool (*SCIC_CONTROLLER_INTERRUPT_HANDLER)(
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struct scic_sds_controller *controller
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);
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/**
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* This method is called by the SCI user to process completions generated as a
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* result of a previously handled interrupt. This method will result in the
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* completion of IO requests and handling of other controller generated
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* events. This method should be called some time after the interrupt
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* handler.
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*
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* Most, if not all, of the user callback APIs are invoked from within this
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* API. As a result, the user should be cognizent of the operating level at
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* which they invoke this API.
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*/
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typedef void (*SCIC_CONTROLLER_COMPLETION_HANDLER)(
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struct scic_sds_controller *controller
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);
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/**
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* struct scic_controller_handler_methods - This structure contains an
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* interrupt handler and completion handler function pointers.
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*
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*
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*/
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struct scic_controller_handler_methods {
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SCIC_CONTROLLER_INTERRUPT_HANDLER interrupt_handler;
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SCIC_CONTROLLER_COMPLETION_HANDLER completion_handler;
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};
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/**
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* scic_controller_construct() - This method will attempt to construct a
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* controller object utilizing the supplied parameter information.
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@ -176,47 +120,6 @@ void scic_controller_enable_interrupts(
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void scic_controller_disable_interrupts(
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struct scic_sds_controller *controller);
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/**
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* scic_controller_get_handler_methods() - This method will return provide
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* function pointers for the interrupt handler and completion handler. The
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* interrupt handler is expected to be invoked at interrupt time. The
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* completion handler is scheduled to run as a result of the interrupt
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* handler. The completion handler performs the bulk work for processing
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* silicon events.
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* @interrupt_type: This parameter informs the core which type of
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* interrupt/completion methods are being requested. These are the types:
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* SCIC_LEGACY_LINE_INTERRUPT_TYPE, SCIC_MSIX_INTERRUPT_TYPE,
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* SCIC_NO_INTERRUPTS (POLLING)
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* @message_count: This parameter informs the core the number of MSI-X messages
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* to be utilized. This parameter must be 0 when requesting legacy line
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* based handlers.
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* @handler_methods: The caller provides a pointer to a buffer of type
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* struct scic_controller_handler_methods. The size depends on the combination of
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* the interrupt_type and message_count input parameters:
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* SCIC_LEGACY_LINE_INTERRUPT_TYPE: - size =
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* sizeof(struct scic_controller_handler_methods) SCIC_MSIX_INTERRUPT_TYPE:
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* sizeof(struct scic_controller_handler_methods)
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* @handler_methods: SCIC fills out the caller's buffer with the appropriate
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* interrupt and completion handlers based on the info provided in the
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* interrupt_type and message_count input parameters. For
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* SCIC_LEGACY_LINE_INTERRUPT_TYPE, the buffer receives a single
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* struct scic_controller_handler_methods element regardless that the
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* message_count parameter is zero. For SCIC_MSIX_INTERRUPT_TYPE, the buffer
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* receives an array of elements of type struct scic_controller_handler_methods
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* where the array size is equivalent to the message_count parameter. The
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* array is zero-relative where entry zero corresponds to message-vector
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* zero, entry one corresponds to message-vector one, and so forth.
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*
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* Indicate if the handler retrieval operation was successful. SCI_SUCCESS This
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* value is returned if retrieval succeeded.
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* SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT This value is returned if the user
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* supplied an unsupported number of MSI-X messages. For legacy line interrupts
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* the only valid value is 0.
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*/
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enum sci_status scic_controller_get_handler_methods(
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enum scic_interrupt_type interrupt_type,
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u16 message_count,
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struct scic_controller_handler_methods *handler_methods);
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/**
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* scic_controller_initialize() - This method will initialize the controller
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@ -1564,340 +1564,6 @@ static void scic_sds_controller_process_completions(
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}
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/**
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* This method is a private routine for processing the completion queue entries.
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* @this_controller:
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*
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*/
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static void scic_sds_controller_transitioned_process_completions(
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struct scic_sds_controller *this_controller)
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{
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u32 completion_count = 0;
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u32 completion_entry;
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u32 get_index;
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u32 get_cycle;
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u32 event_index;
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u32 event_cycle;
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dev_dbg(scic_to_dev(this_controller),
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"%s: completion queue begining get:0x%08x\n",
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__func__,
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this_controller->completion_queue_get);
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/* Get the component parts of the completion queue */
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get_index = NORMALIZE_GET_POINTER(this_controller->completion_queue_get);
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get_cycle = SMU_CQGR_CYCLE_BIT & this_controller->completion_queue_get;
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event_index = NORMALIZE_EVENT_POINTER(this_controller->completion_queue_get);
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event_cycle = SMU_CQGR_EVENT_CYCLE_BIT & this_controller->completion_queue_get;
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while (
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NORMALIZE_GET_POINTER_CYCLE_BIT(get_cycle)
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== COMPLETION_QUEUE_CYCLE_BIT(
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this_controller->completion_queue[get_index])
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) {
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completion_count++;
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completion_entry = this_controller->completion_queue[get_index];
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INCREMENT_COMPLETION_QUEUE_GET(this_controller, get_index, get_cycle);
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dev_dbg(scic_to_dev(this_controller),
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"%s: completion queue entry:0x%08x\n",
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__func__,
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completion_entry);
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switch (SCU_GET_COMPLETION_TYPE(completion_entry)) {
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case SCU_COMPLETION_TYPE_TASK:
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scic_sds_controller_task_completion(this_controller, completion_entry);
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break;
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case SCU_COMPLETION_TYPE_NOTIFY:
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case SCU_COMPLETION_TYPE_EVENT:
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/*
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* Presently we do the same thing with a notify event that we
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* do with the other event codes. */
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INCREMENT_EVENT_QUEUE_GET(this_controller, event_index, event_cycle);
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/* Fall-through */
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case SCU_COMPLETION_TYPE_SDMA:
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case SCU_COMPLETION_TYPE_UFI:
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default:
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dev_warn(scic_to_dev(this_controller),
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"%s: SCIC Controller ignoring completion type "
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"%x\n",
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__func__,
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completion_entry);
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break;
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}
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}
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/* Update the get register if we completed one or more entries */
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if (completion_count > 0) {
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this_controller->completion_queue_get =
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SMU_CQGR_GEN_BIT(ENABLE)
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| SMU_CQGR_GEN_BIT(EVENT_ENABLE)
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| event_cycle | SMU_CQGR_GEN_VAL(EVENT_POINTER, event_index)
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| get_cycle | SMU_CQGR_GEN_VAL(POINTER, get_index);
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SMU_CQGR_WRITE(this_controller, this_controller->completion_queue_get);
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}
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dev_dbg(scic_to_dev(this_controller),
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"%s: completion queue ending get:0x%08x\n",
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__func__,
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this_controller->completion_queue_get);
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}
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/*
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* ****************************************************************************-
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* * SCIC SDS Controller Interrupt and Completion functions
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* ****************************************************************************- */
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/**
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* This method provides standard (common) processing of interrupts for polling
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* and legacy based interrupts.
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* @controller:
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* @interrupt_status:
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*
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* This method returns a boolean (bool) indication as to whether an completions
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* are pending to be processed. true if an interrupt is to be processed false
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* if no interrupt was pending
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*/
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static bool scic_sds_controller_standard_interrupt_handler(
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struct scic_sds_controller *this_controller,
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u32 interrupt_status)
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{
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bool is_completion_needed = false;
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if ((interrupt_status & SMU_ISR_QUEUE_ERROR) ||
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((interrupt_status & SMU_ISR_QUEUE_SUSPEND) &&
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(!scic_sds_controller_completion_queue_has_entries(
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this_controller)))) {
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/*
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* We have a fatal error on the read of the completion queue bar
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* OR
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* We have a fatal error there is nothing in the completion queue
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* but we have a report from the hardware that the queue is full
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* / @todo how do we request the a controller reset */
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is_completion_needed = true;
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this_controller->encountered_fatal_error = true;
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}
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if (scic_sds_controller_completion_queue_has_entries(this_controller)) {
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is_completion_needed = true;
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}
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return is_completion_needed;
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}
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/**
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* This is the method provided to handle polling for interrupts for the
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* controller object.
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*
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* bool true if an interrupt is to be processed false if no interrupt was
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* pending
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*/
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static bool scic_sds_controller_polling_interrupt_handler(
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struct scic_sds_controller *scic)
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{
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u32 interrupt_status;
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/*
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* In INTERRUPT_POLLING_MODE we exit the interrupt handler if the
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* hardware indicates nothing is pending. Since we are not being
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* called from a real interrupt, we don't want to confuse the hardware
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* by servicing the completion queue before the hardware indicates it
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* is ready. We'll simply wait for another polling interval and check
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* again.
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*/
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interrupt_status = SMU_ISR_READ(scic);
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if ((interrupt_status &
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(SMU_ISR_COMPLETION |
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SMU_ISR_QUEUE_ERROR |
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SMU_ISR_QUEUE_SUSPEND)) == 0) {
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return false;
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}
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return scic_sds_controller_standard_interrupt_handler(
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scic, interrupt_status);
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}
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/**
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* This is the method provided to handle completions when interrupt polling is
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* in use.
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*/
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static void scic_sds_controller_polling_completion_handler(
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struct scic_sds_controller *scic)
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{
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if (scic->encountered_fatal_error == true) {
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dev_err(scic_to_dev(scic),
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"%s: SCIC Controller has encountered a fatal error.\n",
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__func__);
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sci_base_state_machine_change_state(
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scic_sds_controller_get_base_state_machine(scic),
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SCI_BASE_CONTROLLER_STATE_FAILED);
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} else if (scic_sds_controller_completion_queue_has_entries(scic)) {
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if (scic->restrict_completions == false)
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scic_sds_controller_process_completions(scic);
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else
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scic_sds_controller_transitioned_process_completions(
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scic);
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}
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/*
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* The interrupt handler does not adjust the CQ's
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* get pointer. So, SCU's INTx pin stays asserted during the
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* interrupt handler even though it tries to clear the interrupt
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* source. Therefore, the completion handler must ensure that the
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* interrupt source is cleared. Otherwise, we get a spurious
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* interrupt for which the interrupt handler will not issue a
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* corresponding completion event. Also, we unmask interrupts.
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*/
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SMU_ISR_WRITE(
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scic,
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(u32)(SMU_ISR_COMPLETION | SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND)
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);
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}
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/**
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* This is the method provided to handle legacy interrupts for the controller
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* object.
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*
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* bool true if an interrupt is processed false if no interrupt was processed
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*/
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static bool scic_sds_controller_legacy_interrupt_handler(
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struct scic_sds_controller *scic)
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{
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u32 interrupt_status;
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bool is_completion_needed;
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interrupt_status = SMU_ISR_READ(scic);
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is_completion_needed = scic_sds_controller_standard_interrupt_handler(
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scic, interrupt_status);
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return is_completion_needed;
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}
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/**
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* This is the method provided to handle legacy completions it is expected that
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* the SCI User will call this completion handler anytime the interrupt
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* handler reports that it has handled an interrupt.
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*/
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static void scic_sds_controller_legacy_completion_handler(
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struct scic_sds_controller *scic)
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{
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scic_sds_controller_polling_completion_handler(scic);
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SMU_IMR_WRITE(scic, 0x00000000);
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}
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/**
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* This is the method provided to handle an MSIX interrupt message when there
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* is just a single MSIX message being provided by the hardware. This mode
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* of operation is single vector mode.
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*
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* bool true if an interrupt is processed false if no interrupt was processed
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*/
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static bool scic_sds_controller_single_vector_interrupt_handler(
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struct scic_sds_controller *scic)
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{
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u32 interrupt_status;
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/*
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* Mask the interrupts
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* There is a race in the hardware that could cause us not to be notified
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* of an interrupt completion if we do not take this step. We will unmask
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* the interrupts in the completion routine. */
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SMU_IMR_WRITE(scic, 0xFFFFFFFF);
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interrupt_status = SMU_ISR_READ(scic);
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interrupt_status &= (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND);
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if ((interrupt_status == 0) &&
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scic_sds_controller_completion_queue_has_entries(scic)) {
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/*
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* There is at least one completion queue entry to process so we can
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* return a success and ignore for now the case of an error interrupt */
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SMU_ISR_WRITE(scic, SMU_ISR_COMPLETION);
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return true;
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}
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if (interrupt_status != 0) {
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/*
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* There is an error interrupt pending so let it through and handle
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* in the callback */
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return true;
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}
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/*
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* Clear any offending interrupts since we could not find any to handle
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* and unmask them all */
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SMU_ISR_WRITE(scic, 0x00000000);
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SMU_IMR_WRITE(scic, 0x00000000);
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return false;
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}
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/**
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* This is the method provided to handle completions for a single MSIX message.
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*/
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static void scic_sds_controller_single_vector_completion_handler(
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struct scic_sds_controller *scic)
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{
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u32 interrupt_status;
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interrupt_status = SMU_ISR_READ(scic);
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interrupt_status &= (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND);
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if (interrupt_status & SMU_ISR_QUEUE_ERROR) {
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dev_err(scic_to_dev(scic),
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"%s: SCIC Controller has encountered a fatal error.\n",
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__func__);
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/*
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* We have a fatal condition and must reset the controller
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* Leave the interrupt mask in place and get the controller reset */
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sci_base_state_machine_change_state(
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scic_sds_controller_get_base_state_machine(scic),
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SCI_BASE_CONTROLLER_STATE_FAILED);
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return;
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}
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if ((interrupt_status & SMU_ISR_QUEUE_SUSPEND) &&
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!scic_sds_controller_completion_queue_has_entries(scic)) {
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dev_err(scic_to_dev(scic),
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"%s: SCIC Controller has encountered a fatal error.\n",
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__func__);
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/*
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* We have a fatal condtion and must reset the controller
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* Leave the interrupt mask in place and get the controller reset */
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sci_base_state_machine_change_state(
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scic_sds_controller_get_base_state_machine(scic),
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SCI_BASE_CONTROLLER_STATE_FAILED);
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return;
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}
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if (scic_sds_controller_completion_queue_has_entries(scic)) {
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scic_sds_controller_process_completions(scic);
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/*
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* We dont care which interrupt got us to processing the completion queu
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* so clear them both. */
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SMU_ISR_WRITE(
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scic,
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(SMU_ISR_COMPLETION | SMU_ISR_QUEUE_SUSPEND));
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}
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SMU_IMR_WRITE(scic, 0x00000000);
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}
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/**
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* This is the method provided to handle a MSIX message for a normal completion.
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*
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* bool true if an interrupt is processed false if no interrupt was processed
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*/
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bool scic_sds_controller_isr(struct scic_sds_controller *scic)
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{
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if (scic_sds_controller_completion_queue_has_entries(scic)) {
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|
@ -1920,10 +1586,6 @@ bool scic_sds_controller_isr(struct scic_sds_controller *scic)
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return false;
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}
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/**
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* This is the method provided to handle the completions for a normal MSIX
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* message.
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*/
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void scic_sds_controller_completion_handler(struct scic_sds_controller *scic)
|
||||
{
|
||||
/* Empty out the completion queue */
|
||||
|
@ -1994,14 +1656,6 @@ void scic_sds_controller_error_handler(struct scic_sds_controller *scic)
|
|||
}
|
||||
|
||||
|
||||
/*
|
||||
* ****************************************************************************-
|
||||
* * SCIC SDS Controller External Methods
|
||||
* ****************************************************************************- */
|
||||
|
||||
/**
|
||||
* This method returns the sizeof the SCIC SDS Controller Object
|
||||
*/
|
||||
u32 scic_sds_controller_get_object_size(void)
|
||||
{
|
||||
return sizeof(struct scic_sds_controller);
|
||||
|
@ -2535,72 +2189,6 @@ enum sci_status scic_controller_reset(
|
|||
return status;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------- */
|
||||
|
||||
enum sci_status scic_controller_get_handler_methods(
|
||||
enum scic_interrupt_type interrupt_type,
|
||||
u16 message_count,
|
||||
struct scic_controller_handler_methods *handler_methods)
|
||||
{
|
||||
enum sci_status status = SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT;
|
||||
|
||||
switch (interrupt_type) {
|
||||
case SCIC_LEGACY_LINE_INTERRUPT_TYPE:
|
||||
if (message_count == 0) {
|
||||
handler_methods[0].interrupt_handler
|
||||
= scic_sds_controller_legacy_interrupt_handler;
|
||||
handler_methods[0].completion_handler
|
||||
= scic_sds_controller_legacy_completion_handler;
|
||||
|
||||
status = SCI_SUCCESS;
|
||||
}
|
||||
break;
|
||||
|
||||
case SCIC_MSIX_INTERRUPT_TYPE:
|
||||
if (message_count == 1) {
|
||||
handler_methods[0].interrupt_handler
|
||||
= scic_sds_controller_single_vector_interrupt_handler;
|
||||
handler_methods[0].completion_handler
|
||||
= scic_sds_controller_single_vector_completion_handler;
|
||||
|
||||
status = SCI_SUCCESS;
|
||||
} else if (message_count == 2) {
|
||||
handler_methods[0].interrupt_handler
|
||||
= scic_sds_controller_isr;
|
||||
handler_methods[0].completion_handler
|
||||
= scic_sds_controller_completion_handler;
|
||||
|
||||
handler_methods[1].interrupt_handler
|
||||
= scic_sds_controller_error_isr;
|
||||
handler_methods[1].completion_handler
|
||||
= scic_sds_controller_error_handler;
|
||||
|
||||
status = SCI_SUCCESS;
|
||||
}
|
||||
break;
|
||||
|
||||
case SCIC_NO_INTERRUPTS:
|
||||
if (message_count == 0) {
|
||||
|
||||
handler_methods[0].interrupt_handler
|
||||
= scic_sds_controller_polling_interrupt_handler;
|
||||
handler_methods[0].completion_handler
|
||||
= scic_sds_controller_polling_completion_handler;
|
||||
|
||||
status = SCI_SUCCESS;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
status = SCI_FAILURE_INVALID_PARAMETER_VALUE;
|
||||
break;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------- */
|
||||
|
||||
enum sci_io_status scic_controller_start_io(
|
||||
struct scic_sds_controller *scic,
|
||||
struct scic_sds_remote_device *remote_device,
|
||||
|
|
|
@ -335,19 +335,6 @@ struct scic_sds_controller {
|
|||
*/
|
||||
struct scic_sds_unsolicited_frame_control uf_control;
|
||||
|
||||
/**
|
||||
* This field records the fact that the controller has encountered a fatal
|
||||
* error and must be reset.
|
||||
*/
|
||||
bool encountered_fatal_error;
|
||||
|
||||
/**
|
||||
* This field specifies that the controller should ignore
|
||||
* completion processing for non-fastpath events. This will
|
||||
* cause the completions to be thrown away.
|
||||
*/
|
||||
bool restrict_completions;
|
||||
|
||||
/* Phy Startup Data */
|
||||
/**
|
||||
* This field is the driver timer handle for controller phy request startup.
|
||||
|
|
|
@ -86,9 +86,8 @@ struct scic_sds_controller;
|
|||
* occurs for the created timer.
|
||||
*
|
||||
* The "timer_callback" method should be executed in a mutually exlusive manner
|
||||
* from the controller completion handler handler (refer to
|
||||
* scic_controller_get_handler_methods()). This method returns a handle to a
|
||||
* timer object created by the user. The handle will be utilized for all
|
||||
* from the controller completion handler handler. This method returns a handle
|
||||
* to a timer object created by the user. The handle will be utilized for all
|
||||
* further interactions relating to this timer.
|
||||
*/
|
||||
void *scic_cb_timer_create(
|
||||
|
|
Loading…
Reference in a new issue