ACPICA: Split large file, evgpeblk
Create two new files, evgpeinit.c and evgpeutil.c. Updated
unix and linux makefiles.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c
new file mode 100644
index 0000000..19a0e51
--- /dev/null
+++ b/drivers/acpi/acpica/evgpeutil.c
@@ -0,0 +1,337 @@
+/******************************************************************************
+ *
+ * Module Name: evgpeutil - GPE utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2010, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acevents.h"
+
+#define _COMPONENT ACPI_EVENTS
+ACPI_MODULE_NAME("evgpeutil")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_walk_gpe_list
+ *
+ * PARAMETERS: gpe_walk_callback - Routine called for each GPE block
+ * Context - Value passed to callback
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Walk the GPE lists.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context)
+{
+ struct acpi_gpe_block_info *gpe_block;
+ struct acpi_gpe_xrupt_info *gpe_xrupt_info;
+ acpi_status status = AE_OK;
+ acpi_cpu_flags flags;
+
+ ACPI_FUNCTION_TRACE(ev_walk_gpe_list);
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+ /* Walk the interrupt level descriptor list */
+
+ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+ while (gpe_xrupt_info) {
+
+ /* Walk all Gpe Blocks attached to this interrupt level */
+
+ gpe_block = gpe_xrupt_info->gpe_block_list_head;
+ while (gpe_block) {
+
+ /* One callback per GPE block */
+
+ status =
+ gpe_walk_callback(gpe_xrupt_info, gpe_block,
+ context);
+ if (ACPI_FAILURE(status)) {
+ if (status == AE_CTRL_END) { /* Callback abort */
+ status = AE_OK;
+ }
+ goto unlock_and_exit;
+ }
+
+ gpe_block = gpe_block->next;
+ }
+
+ gpe_xrupt_info = gpe_xrupt_info->next;
+ }
+
+ unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_valid_gpe_event
+ *
+ * PARAMETERS: gpe_event_info - Info for this GPE
+ *
+ * RETURN: TRUE if the gpe_event is valid
+ *
+ * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
+ * Should be called only when the GPE lists are semaphore locked
+ * and not subject to change.
+ *
+ ******************************************************************************/
+
+u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
+{
+ struct acpi_gpe_xrupt_info *gpe_xrupt_block;
+ struct acpi_gpe_block_info *gpe_block;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* No need for spin lock since we are not changing any list elements */
+
+ /* Walk the GPE interrupt levels */
+
+ gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head;
+ while (gpe_xrupt_block) {
+ gpe_block = gpe_xrupt_block->gpe_block_list_head;
+
+ /* Walk the GPE blocks on this interrupt level */
+
+ while (gpe_block) {
+ if ((&gpe_block->event_info[0] <= gpe_event_info) &&
+ (&gpe_block->event_info[gpe_block->gpe_count] >
+ gpe_event_info)) {
+ return (TRUE);
+ }
+
+ gpe_block = gpe_block->next;
+ }
+
+ gpe_xrupt_block = gpe_xrupt_block->next;
+ }
+
+ return (FALSE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_get_gpe_xrupt_block
+ *
+ * PARAMETERS: interrupt_number - Interrupt for a GPE block
+ *
+ * RETURN: A GPE interrupt block
+ *
+ * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
+ * block per unique interrupt level used for GPEs. Should be
+ * called only when the GPE lists are semaphore locked and not
+ * subject to change.
+ *
+ ******************************************************************************/
+
+struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number)
+{
+ struct acpi_gpe_xrupt_info *next_gpe_xrupt;
+ struct acpi_gpe_xrupt_info *gpe_xrupt;
+ acpi_status status;
+ acpi_cpu_flags flags;
+
+ ACPI_FUNCTION_TRACE(ev_get_gpe_xrupt_block);
+
+ /* No need for lock since we are not changing any list elements here */
+
+ next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
+ while (next_gpe_xrupt) {
+ if (next_gpe_xrupt->interrupt_number == interrupt_number) {
+ return_PTR(next_gpe_xrupt);
+ }
+
+ next_gpe_xrupt = next_gpe_xrupt->next;
+ }
+
+ /* Not found, must allocate a new xrupt descriptor */
+
+ gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info));
+ if (!gpe_xrupt) {
+ return_PTR(NULL);
+ }
+
+ gpe_xrupt->interrupt_number = interrupt_number;
+
+ /* Install new interrupt descriptor with spin lock */
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+ if (acpi_gbl_gpe_xrupt_list_head) {
+ next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
+ while (next_gpe_xrupt->next) {
+ next_gpe_xrupt = next_gpe_xrupt->next;
+ }
+
+ next_gpe_xrupt->next = gpe_xrupt;
+ gpe_xrupt->previous = next_gpe_xrupt;
+ } else {
+ acpi_gbl_gpe_xrupt_list_head = gpe_xrupt;
+ }
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+ /* Install new interrupt handler if not SCI_INT */
+
+ if (interrupt_number != acpi_gbl_FADT.sci_interrupt) {
+ status = acpi_os_install_interrupt_handler(interrupt_number,
+ acpi_ev_gpe_xrupt_handler,
+ gpe_xrupt);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO,
+ "Could not install GPE interrupt handler at level 0x%X",
+ interrupt_number));
+ return_PTR(NULL);
+ }
+ }
+
+ return_PTR(gpe_xrupt);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_delete_gpe_xrupt
+ *
+ * PARAMETERS: gpe_xrupt - A GPE interrupt info block
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Remove and free a gpe_xrupt block. Remove an associated
+ * interrupt handler if not the SCI interrupt.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
+{
+ acpi_status status;
+ acpi_cpu_flags flags;
+
+ ACPI_FUNCTION_TRACE(ev_delete_gpe_xrupt);
+
+ /* We never want to remove the SCI interrupt handler */
+
+ if (gpe_xrupt->interrupt_number == acpi_gbl_FADT.sci_interrupt) {
+ gpe_xrupt->gpe_block_list_head = NULL;
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Disable this interrupt */
+
+ status =
+ acpi_os_remove_interrupt_handler(gpe_xrupt->interrupt_number,
+ acpi_ev_gpe_xrupt_handler);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Unlink the interrupt block with lock */
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+ if (gpe_xrupt->previous) {
+ gpe_xrupt->previous->next = gpe_xrupt->next;
+ } else {
+ /* No previous, update list head */
+
+ acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
+ }
+
+ if (gpe_xrupt->next) {
+ gpe_xrupt->next->previous = gpe_xrupt->previous;
+ }
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+ /* Free the block */
+
+ ACPI_FREE(gpe_xrupt);
+ return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_delete_gpe_handlers
+ *
+ * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
+ * gpe_block - Gpe Block info
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Delete all Handler objects found in the GPE data structs.
+ * Used only prior to termination.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block,
+ void *context)
+{
+ struct acpi_gpe_event_info *gpe_event_info;
+ u32 i;
+ u32 j;
+
+ ACPI_FUNCTION_TRACE(ev_delete_gpe_handlers);
+
+ /* Examine each GPE Register within the block */
+
+ for (i = 0; i < gpe_block->register_count; i++) {
+
+ /* Now look at the individual GPEs in this byte register */
+
+ for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
+ gpe_event_info = &gpe_block->event_info[((acpi_size) i *
+ ACPI_GPE_REGISTER_WIDTH)
+ + j];
+
+ if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+ ACPI_GPE_DISPATCH_HANDLER) {
+ ACPI_FREE(gpe_event_info->dispatch.handler);
+ gpe_event_info->dispatch.handler = NULL;
+ gpe_event_info->flags &=
+ ~ACPI_GPE_DISPATCH_MASK;
+ }
+ }
+ }
+
+ return_ACPI_STATUS(AE_OK);
+}