ACPICA: create acpica/ directory

also, delete sleep/ and delete ACPI_CFLAGS from Makefile

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 0 insertions, 1227 deletions

diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
deleted file mode 100644
index 2a8d1856038..00000000000
--- a/drivers/acpi/events/evgpeblk.c
+++ /dev/null
@@ -1,1227 +0,0 @@
-/******************************************************************************
- *
- * Module Name: evgpeblk - GPE block creation and initialization.
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, 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 <acpi/accommon.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-
-#define _COMPONENT          ACPI_EVENTS
-ACPI_MODULE_NAME("evgpeblk")
-
-/* Local prototypes */
-static acpi_status
-acpi_ev_save_method_info(acpi_handle obj_handle,
-			 u32 level, void *obj_desc, void **return_value);
-
-static acpi_status
-acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
-			  u32 level, void *info, void **return_value);
-
-static struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32
-							       interrupt_number);
-
-static acpi_status
-acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
-
-static acpi_status
-acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
-			  u32 interrupt_number);
-
-static acpi_status
-acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block);
-
-/*******************************************************************************
- *
- * 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[((acpi_size) gpe_block->
-					 register_count) * 8] >
-			     gpe_event_info)) {
-				return (TRUE);
-			}
-
-			gpe_block = gpe_block->next;
-		}
-
-		gpe_xrupt_block = gpe_xrupt_block->next;
-	}
-
-	return (FALSE);
-}
-
-/*******************************************************************************
- *
- * 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_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);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_save_method_info
- *
- * PARAMETERS:  Callback from walk_namespace
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
- *              control method under the _GPE portion of the namespace.
- *              Extract the name and GPE type from the object, saving this
- *              information for quick lookup during GPE dispatch
- *
- *              The name of each GPE control method is of the form:
- *              "_Lxx" or "_Exx"
- *              Where:
- *                  L      - means that the GPE is level triggered
- *                  E      - means that the GPE is edge triggered
- *                  xx     - is the GPE number [in HEX]
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_save_method_info(acpi_handle obj_handle,
-			 u32 level, void *obj_desc, void **return_value)
-{
-	struct acpi_gpe_block_info *gpe_block = (void *)obj_desc;
-	struct acpi_gpe_event_info *gpe_event_info;
-	u32 gpe_number;
-	char name[ACPI_NAME_SIZE + 1];
-	u8 type;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ev_save_method_info);
-
-	/*
-	 * _Lxx and _Exx GPE method support
-	 *
-	 * 1) Extract the name from the object and convert to a string
-	 */
-	ACPI_MOVE_32_TO_32(name,
-			   &((struct acpi_namespace_node *)obj_handle)->name.
-			   integer);
-	name[ACPI_NAME_SIZE] = 0;
-
-	/*
-	 * 2) Edge/Level determination is based on the 2nd character
-	 *    of the method name
-	 *
-	 * NOTE: Default GPE type is RUNTIME. May be changed later to WAKE
-	 * if a _PRW object is found that points to this GPE.
-	 */
-	switch (name[1]) {
-	case 'L':
-		type = ACPI_GPE_LEVEL_TRIGGERED;
-		break;
-
-	case 'E':
-		type = ACPI_GPE_EDGE_TRIGGERED;
-		break;
-
-	default:
-		/* Unknown method type, just ignore it! */
-
-		ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
-				  "Ignoring unknown GPE method type: %s (name not of form _Lxx or _Exx)",
-				  name));
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Convert the last two characters of the name to the GPE Number */
-
-	gpe_number = ACPI_STRTOUL(&name[2], NULL, 16);
-	if (gpe_number == ACPI_UINT32_MAX) {
-
-		/* Conversion failed; invalid method, just ignore it */
-
-		ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
-				  "Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)",
-				  name));
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Ensure that we have a valid GPE number for this GPE block */
-
-	if ((gpe_number < gpe_block->block_base_number) ||
-	    (gpe_number >=
-	     (gpe_block->block_base_number +
-	      (gpe_block->register_count * 8)))) {
-		/*
-		 * Not valid for this GPE block, just ignore it. However, it may be
-		 * valid for a different GPE block, since GPE0 and GPE1 methods both
-		 * appear under \_GPE.
-		 */
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/*
-	 * Now we can add this information to the gpe_event_info block for use
-	 * during dispatch of this GPE. Default type is RUNTIME, although this may
-	 * change when the _PRW methods are executed later.
-	 */
-	gpe_event_info =
-	    &gpe_block->event_info[gpe_number - gpe_block->block_base_number];
-
-	gpe_event_info->flags = (u8)
-	    (type | ACPI_GPE_DISPATCH_METHOD | ACPI_GPE_TYPE_RUNTIME);
-
-	gpe_event_info->dispatch.method_node =
-	    (struct acpi_namespace_node *)obj_handle;
-
-	/* Update enable mask, but don't enable the HW GPE as of yet */
-
-	status = acpi_ev_enable_gpe(gpe_event_info, FALSE);
-
-	ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
-			  "Registered GPE method %s as GPE number 0x%.2X\n",
-			  name, gpe_number));
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_match_prw_and_gpe
- *
- * PARAMETERS:  Callback from walk_namespace
- *
- * RETURN:      Status. NOTE: We ignore errors so that the _PRW walk is
- *              not aborted on a single _PRW failure.
- *
- * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
- *              Device. Run the _PRW method. If present, extract the GPE
- *              number and mark the GPE as a WAKE GPE.
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
-			  u32 level, void *info, void **return_value)
-{
-	struct acpi_gpe_walk_info *gpe_info = (void *)info;
-	struct acpi_namespace_node *gpe_device;
-	struct acpi_gpe_block_info *gpe_block;
-	struct acpi_namespace_node *target_gpe_device;
-	struct acpi_gpe_event_info *gpe_event_info;
-	union acpi_operand_object *pkg_desc;
-	union acpi_operand_object *obj_desc;
-	u32 gpe_number;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
-
-	/* Check for a _PRW method under this device */
-
-	status = acpi_ut_evaluate_object(obj_handle, METHOD_NAME__PRW,
-					 ACPI_BTYPE_PACKAGE, &pkg_desc);
-	if (ACPI_FAILURE(status)) {
-
-		/* Ignore all errors from _PRW, we don't want to abort the subsystem */
-
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* The returned _PRW package must have at least two elements */
-
-	if (pkg_desc->package.count < 2) {
-		goto cleanup;
-	}
-
-	/* Extract pointers from the input context */
-
-	gpe_device = gpe_info->gpe_device;
-	gpe_block = gpe_info->gpe_block;
-
-	/*
-	 * The _PRW object must return a package, we are only interested in the
-	 * first element
-	 */
-	obj_desc = pkg_desc->package.elements[0];
-
-	if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
-
-		/* Use FADT-defined GPE device (from definition of _PRW) */
-
-		target_gpe_device = acpi_gbl_fadt_gpe_device;
-
-		/* Integer is the GPE number in the FADT described GPE blocks */
-
-		gpe_number = (u32) obj_desc->integer.value;
-	} else if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
-
-		/* Package contains a GPE reference and GPE number within a GPE block */
-
-		if ((obj_desc->package.count < 2) ||
-		    (ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[0]) !=
-		     ACPI_TYPE_LOCAL_REFERENCE)
-		    || (ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[1]) !=
-			ACPI_TYPE_INTEGER)) {
-			goto cleanup;
-		}
-
-		/* Get GPE block reference and decode */
-
-		target_gpe_device =
-		    obj_desc->package.elements[0]->reference.node;
-		gpe_number = (u32) obj_desc->package.elements[1]->integer.value;
-	} else {
-		/* Unknown type, just ignore it */
-
-		goto cleanup;
-	}
-
-	/*
-	 * Is this GPE within this block?
-	 *
-	 * TRUE if and only if these conditions are true:
-	 *     1) The GPE devices match.
-	 *     2) The GPE index(number) is within the range of the Gpe Block
-	 *          associated with the GPE device.
-	 */
-	if ((gpe_device == target_gpe_device) &&
-	    (gpe_number >= gpe_block->block_base_number) &&
-	    (gpe_number <
-	     gpe_block->block_base_number + (gpe_block->register_count * 8))) {
-		gpe_event_info =
-		    &gpe_block->event_info[gpe_number -
-					   gpe_block->block_base_number];
-
-		/* Mark GPE for WAKE-ONLY but WAKE_DISABLED */
-
-		gpe_event_info->flags &=
-		    ~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED);
-
-		status =
-		    acpi_ev_set_gpe_type(gpe_event_info, ACPI_GPE_TYPE_WAKE);
-		if (ACPI_FAILURE(status)) {
-			goto cleanup;
-		}
-
-		status =
-		    acpi_ev_update_gpe_enable_masks(gpe_event_info,
-						    ACPI_GPE_DISABLE);
-	}
-
-      cleanup:
-	acpi_ut_remove_reference(pkg_desc);
-	return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * 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.
- *
- ******************************************************************************/
-
-static 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.
- *
- ******************************************************************************/
-
-static 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_install_gpe_block
- *
- * PARAMETERS:  gpe_block               - New GPE block
- *              interrupt_number        - Xrupt to be associated with this
- *                                        GPE block
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Install new GPE block with mutex support
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
-			  u32 interrupt_number)
-{
-	struct acpi_gpe_block_info *next_gpe_block;
-	struct acpi_gpe_xrupt_info *gpe_xrupt_block;
-	acpi_status status;
-	acpi_cpu_flags flags;
-
-	ACPI_FUNCTION_TRACE(ev_install_gpe_block);
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block(interrupt_number);
-	if (!gpe_xrupt_block) {
-		status = AE_NO_MEMORY;
-		goto unlock_and_exit;
-	}
-
-	/* Install the new block at the end of the list with lock */
-
-	flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-	if (gpe_xrupt_block->gpe_block_list_head) {
-		next_gpe_block = gpe_xrupt_block->gpe_block_list_head;
-		while (next_gpe_block->next) {
-			next_gpe_block = next_gpe_block->next;
-		}
-
-		next_gpe_block->next = gpe_block;
-		gpe_block->previous = next_gpe_block;
-	} else {
-		gpe_xrupt_block->gpe_block_list_head = gpe_block;
-	}
-
-	gpe_block->xrupt_block = gpe_xrupt_block;
-	acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
-      unlock_and_exit:
-	status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_delete_gpe_block
- *
- * PARAMETERS:  gpe_block           - Existing GPE block
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Remove a GPE block
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
-{
-	acpi_status status;
-	acpi_cpu_flags flags;
-
-	ACPI_FUNCTION_TRACE(ev_install_gpe_block);
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/* Disable all GPEs in this block */
-
-	status =
-	    acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL);
-
-	if (!gpe_block->previous && !gpe_block->next) {
-
-		/* This is the last gpe_block on this interrupt */
-
-		status = acpi_ev_delete_gpe_xrupt(gpe_block->xrupt_block);
-		if (ACPI_FAILURE(status)) {
-			goto unlock_and_exit;
-		}
-	} else {
-		/* Remove the block on this interrupt with lock */
-
-		flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-		if (gpe_block->previous) {
-			gpe_block->previous->next = gpe_block->next;
-		} else {
-			gpe_block->xrupt_block->gpe_block_list_head =
-			    gpe_block->next;
-		}
-
-		if (gpe_block->next) {
-			gpe_block->next->previous = gpe_block->previous;
-		}
-		acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-	}
-
-	acpi_current_gpe_count -=
-	    gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH;
-
-	/* Free the gpe_block */
-
-	ACPI_FREE(gpe_block->register_info);
-	ACPI_FREE(gpe_block->event_info);
-	ACPI_FREE(gpe_block);
-
-      unlock_and_exit:
-	status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_create_gpe_info_blocks
- *
- * PARAMETERS:  gpe_block   - New GPE block
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Create the register_info and event_info blocks for this GPE block
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
-{
-	struct acpi_gpe_register_info *gpe_register_info = NULL;
-	struct acpi_gpe_event_info *gpe_event_info = NULL;
-	struct acpi_gpe_event_info *this_event;
-	struct acpi_gpe_register_info *this_register;
-	u32 i;
-	u32 j;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ev_create_gpe_info_blocks);
-
-	/* Allocate the GPE register information block */
-
-	gpe_register_info = ACPI_ALLOCATE_ZEROED((acpi_size) gpe_block->
-						 register_count *
-						 sizeof(struct
-							acpi_gpe_register_info));
-	if (!gpe_register_info) {
-		ACPI_ERROR((AE_INFO,
-			    "Could not allocate the GpeRegisterInfo table"));
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	/*
-	 * Allocate the GPE event_info block. There are eight distinct GPEs
-	 * per register. Initialization to zeros is sufficient.
-	 */
-	gpe_event_info = ACPI_ALLOCATE_ZEROED(((acpi_size) gpe_block->
-					       register_count *
-					       ACPI_GPE_REGISTER_WIDTH) *
-					      sizeof(struct
-						     acpi_gpe_event_info));
-	if (!gpe_event_info) {
-		ACPI_ERROR((AE_INFO,
-			    "Could not allocate the GpeEventInfo table"));
-		status = AE_NO_MEMORY;
-		goto error_exit;
-	}
-
-	/* Save the new Info arrays in the GPE block */
-
-	gpe_block->register_info = gpe_register_info;
-	gpe_block->event_info = gpe_event_info;
-
-	/*
-	 * Initialize the GPE Register and Event structures. A goal of these
-	 * tables is to hide the fact that there are two separate GPE register
-	 * sets in a given GPE hardware block, the status registers occupy the
-	 * first half, and the enable registers occupy the second half.
-	 */
-	this_register = gpe_register_info;
-	this_event = gpe_event_info;
-
-	for (i = 0; i < gpe_block->register_count; i++) {
-
-		/* Init the register_info for this GPE register (8 GPEs) */
-
-		this_register->base_gpe_number =
-		    (u8) (gpe_block->block_base_number +
-			  (i * ACPI_GPE_REGISTER_WIDTH));
-
-		this_register->status_address.address =
-		    gpe_block->block_address.address + i;
-
-		this_register->enable_address.address =
-		    gpe_block->block_address.address + i +
-		    gpe_block->register_count;
-
-		this_register->status_address.space_id =
-		    gpe_block->block_address.space_id;
-		this_register->enable_address.space_id =
-		    gpe_block->block_address.space_id;
-		this_register->status_address.bit_width =
-		    ACPI_GPE_REGISTER_WIDTH;
-		this_register->enable_address.bit_width =
-		    ACPI_GPE_REGISTER_WIDTH;
-		this_register->status_address.bit_offset = 0;
-		this_register->enable_address.bit_offset = 0;
-
-		/* Init the event_info for each GPE within this register */
-
-		for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
-			this_event->gpe_number =
-			    (u8) (this_register->base_gpe_number + j);
-			this_event->register_info = this_register;
-			this_event++;
-		}
-
-		/* Disable all GPEs within this register */
-
-		status = acpi_write(0x00, &this_register->enable_address);
-		if (ACPI_FAILURE(status)) {
-			goto error_exit;
-		}
-
-		/* Clear any pending GPE events within this register */
-
-		status = acpi_write(0xFF, &this_register->status_address);
-		if (ACPI_FAILURE(status)) {
-			goto error_exit;
-		}
-
-		this_register++;
-	}
-
-	return_ACPI_STATUS(AE_OK);
-
-      error_exit:
-	if (gpe_register_info) {
-		ACPI_FREE(gpe_register_info);
-	}
-	if (gpe_event_info) {
-		ACPI_FREE(gpe_event_info);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_create_gpe_block
- *
- * PARAMETERS:  gpe_device          - Handle to the parent GPE block
- *              gpe_block_address   - Address and space_iD
- *              register_count      - Number of GPE register pairs in the block
- *              gpe_block_base_number - Starting GPE number for the block
- *              interrupt_number    - H/W interrupt for the block
- *              return_gpe_block    - Where the new block descriptor is returned
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within
- *              the block are disabled at exit.
- *              Note: Assumes namespace is locked.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
-			 struct acpi_generic_address *gpe_block_address,
-			 u32 register_count,
-			 u8 gpe_block_base_number,
-			 u32 interrupt_number,
-			 struct acpi_gpe_block_info **return_gpe_block)
-{
-	acpi_status status;
-	struct acpi_gpe_block_info *gpe_block;
-
-	ACPI_FUNCTION_TRACE(ev_create_gpe_block);
-
-	if (!register_count) {
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Allocate a new GPE block */
-
-	gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info));
-	if (!gpe_block) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	/* Initialize the new GPE block */
-
-	gpe_block->node = gpe_device;
-	gpe_block->register_count = register_count;
-	gpe_block->block_base_number = gpe_block_base_number;
-
-	ACPI_MEMCPY(&gpe_block->block_address, gpe_block_address,
-		    sizeof(struct acpi_generic_address));
-
-	/*
-	 * Create the register_info and event_info sub-structures
-	 * Note: disables and clears all GPEs in the block
-	 */
-	status = acpi_ev_create_gpe_info_blocks(gpe_block);
-	if (ACPI_FAILURE(status)) {
-		ACPI_FREE(gpe_block);
-		return_ACPI_STATUS(status);
-	}
-
-	/* Install the new block in the global lists */
-
-	status = acpi_ev_install_gpe_block(gpe_block, interrupt_number);
-	if (ACPI_FAILURE(status)) {
-		ACPI_FREE(gpe_block);
-		return_ACPI_STATUS(status);
-	}
-
-	/* Find all GPE methods (_Lxx, _Exx) for this block */
-
-	status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device,
-					ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
-					acpi_ev_save_method_info, gpe_block,
-					NULL);
-
-	/* Return the new block */
-
-	if (return_gpe_block) {
-		(*return_gpe_block) = gpe_block;
-	}
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-			  "GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n",
-			  (u32) gpe_block->block_base_number,
-			  (u32) (gpe_block->block_base_number +
-				 ((gpe_block->register_count *
-				   ACPI_GPE_REGISTER_WIDTH) - 1)),
-			  gpe_device->name.ascii, gpe_block->register_count,
-			  interrupt_number));
-
-	/* Update global count of currently available GPEs */
-
-	acpi_current_gpe_count += register_count * ACPI_GPE_REGISTER_WIDTH;
-	return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_initialize_gpe_block
- *
- * PARAMETERS:  gpe_device          - Handle to the parent GPE block
- *              gpe_block           - Gpe Block info
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Initialize and enable a GPE block. First find and run any
- *              _PRT methods associated with the block, then enable the
- *              appropriate GPEs.
- *              Note: Assumes namespace is locked.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
-			     struct acpi_gpe_block_info *gpe_block)
-{
-	acpi_status status;
-	struct acpi_gpe_event_info *gpe_event_info;
-	struct acpi_gpe_walk_info gpe_info;
-	u32 wake_gpe_count;
-	u32 gpe_enabled_count;
-	u32 i;
-	u32 j;
-
-	ACPI_FUNCTION_TRACE(ev_initialize_gpe_block);
-
-	/* Ignore a null GPE block (e.g., if no GPE block 1 exists) */
-
-	if (!gpe_block) {
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/*
-	 * Runtime option: Should wake GPEs be enabled at runtime?  The default
-	 * is no, they should only be enabled just as the machine goes to sleep.
-	 */
-	if (acpi_gbl_leave_wake_gpes_disabled) {
-		/*
-		 * Differentiate runtime vs wake GPEs, via the _PRW control methods.
-		 * Each GPE that has one or more _PRWs that reference it is by
-		 * definition a wake GPE and will not be enabled while the machine
-		 * is running.
-		 */
-		gpe_info.gpe_block = gpe_block;
-		gpe_info.gpe_device = gpe_device;
-
-		status =
-		    acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-					   ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
-					   acpi_ev_match_prw_and_gpe, &gpe_info,
-					   NULL);
-	}
-
-	/*
-	 * Enable all GPEs in this block that have these attributes:
-	 * 1) are "runtime" or "run/wake" GPEs, and
-	 * 2) have a corresponding _Lxx or _Exx method
-	 *
-	 * Any other GPEs within this block must be enabled via the acpi_enable_gpe()
-	 * external interface.
-	 */
-	wake_gpe_count = 0;
-	gpe_enabled_count = 0;
-
-	for (i = 0; i < gpe_block->register_count; i++) {
-		for (j = 0; j < 8; j++) {
-
-			/* Get the info block for this particular GPE */
-
-			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_METHOD)
-			    && (gpe_event_info->flags & ACPI_GPE_TYPE_RUNTIME)) {
-				gpe_enabled_count++;
-			}
-
-			if (gpe_event_info->flags & ACPI_GPE_TYPE_WAKE) {
-				wake_gpe_count++;
-			}
-		}
-	}
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-			  "Found %u Wake, Enabled %u Runtime GPEs in this block\n",
-			  wake_gpe_count, gpe_enabled_count));
-
-	/* Enable all valid runtime GPEs found above */
-
-	status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block, NULL);
-	if (ACPI_FAILURE(status)) {
-		ACPI_ERROR((AE_INFO, "Could not enable GPEs in GpeBlock %p",
-			    gpe_block));
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_gpe_initialize
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Initialize the GPE data structures
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_gpe_initialize(void)
-{
-	u32 register_count0 = 0;
-	u32 register_count1 = 0;
-	u32 gpe_number_max = 0;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ev_gpe_initialize);
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Initialize the GPE Block(s) defined in the FADT
-	 *
-	 * Why the GPE register block lengths are divided by 2:  From the ACPI Spec,
-	 * section "General-Purpose Event Registers", we have:
-	 *
-	 * "Each register block contains two registers of equal length
-	 *  GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
-	 *  GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
-	 *  The length of the GPE1_STS and GPE1_EN registers is equal to
-	 *  half the GPE1_LEN. If a generic register block is not supported
-	 *  then its respective block pointer and block length values in the
-	 *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
-	 *  to be the same size."
-	 */
-
-	/*
-	 * Determine the maximum GPE number for this machine.
-	 *
-	 * Note: both GPE0 and GPE1 are optional, and either can exist without
-	 * the other.
-	 *
-	 * If EITHER the register length OR the block address are zero, then that
-	 * particular block is not supported.
-	 */
-	if (acpi_gbl_FADT.gpe0_block_length &&
-	    acpi_gbl_FADT.xgpe0_block.address) {
-
-		/* GPE block 0 exists (has both length and address > 0) */
-
-		register_count0 = (u16) (acpi_gbl_FADT.gpe0_block_length / 2);
-
-		gpe_number_max =
-		    (register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;
-
-		/* Install GPE Block 0 */
-
-		status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
-						  &acpi_gbl_FADT.xgpe0_block,
-						  register_count0, 0,
-						  acpi_gbl_FADT.sci_interrupt,
-						  &acpi_gbl_gpe_fadt_blocks[0]);
-
-		if (ACPI_FAILURE(status)) {
-			ACPI_EXCEPTION((AE_INFO, status,
-					"Could not create GPE Block 0"));
-		}
-	}
-
-	if (acpi_gbl_FADT.gpe1_block_length &&
-	    acpi_gbl_FADT.xgpe1_block.address) {
-
-		/* GPE block 1 exists (has both length and address > 0) */
-
-		register_count1 = (u16) (acpi_gbl_FADT.gpe1_block_length / 2);
-
-		/* Check for GPE0/GPE1 overlap (if both banks exist) */
-
-		if ((register_count0) &&
-		    (gpe_number_max >= acpi_gbl_FADT.gpe1_base)) {
-			ACPI_ERROR((AE_INFO,
-				    "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1",
-				    gpe_number_max, acpi_gbl_FADT.gpe1_base,
-				    acpi_gbl_FADT.gpe1_base +
-				    ((register_count1 *
-				      ACPI_GPE_REGISTER_WIDTH) - 1)));
-
-			/* Ignore GPE1 block by setting the register count to zero */
-
-			register_count1 = 0;
-		} else {
-			/* Install GPE Block 1 */
-
-			status =
-			    acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
-						     &acpi_gbl_FADT.xgpe1_block,
-						     register_count1,
-						     acpi_gbl_FADT.gpe1_base,
-						     acpi_gbl_FADT.
-						     sci_interrupt,
-						     &acpi_gbl_gpe_fadt_blocks
-						     [1]);
-
-			if (ACPI_FAILURE(status)) {
-				ACPI_EXCEPTION((AE_INFO, status,
-						"Could not create GPE Block 1"));
-			}
-
-			/*
-			 * GPE0 and GPE1 do not have to be contiguous in the GPE number
-			 * space. However, GPE0 always starts at GPE number zero.
-			 */
-			gpe_number_max = acpi_gbl_FADT.gpe1_base +
-			    ((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1);
-		}
-	}
-
-	/* Exit if there are no GPE registers */
-
-	if ((register_count0 + register_count1) == 0) {
-
-		/* GPEs are not required by ACPI, this is OK */
-
-		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-				  "There are no GPE blocks defined in the FADT\n"));
-		status = AE_OK;
-		goto cleanup;
-	}
-
-	/* Check for Max GPE number out-of-range */
-
-	if (gpe_number_max > ACPI_GPE_MAX) {
-		ACPI_ERROR((AE_INFO,
-			    "Maximum GPE number from FADT is too large: 0x%X",
-			    gpe_number_max));
-		status = AE_BAD_VALUE;
-		goto cleanup;
-	}
-
-      cleanup:
-	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-	return_ACPI_STATUS(AE_OK);
-}