patch-2.4.22 linux-2.4.22/drivers/acpi/events/evxfevnt.c

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diff -urN linux-2.4.21/drivers/acpi/events/evxfevnt.c linux-2.4.22/drivers/acpi/events/evxfevnt.c
@@ -1,43 +1,58 @@
 /******************************************************************************
  *
  * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
- *              $Revision: 38 $
  *
  *****************************************************************************/
 
 /*
- *  Copyright (C) 2000, 2001 R. Byron Moore
+ * Copyright (C) 2000 - 2003, R. Byron Moore
+ * All rights reserved.
  *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 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.h"
-#include "achware.h"
-#include "acnamesp.h"
-#include "acevents.h"
-#include "amlcode.h"
-#include "acinterp.h"
+#include <acpi/acpi.h>
+#include <acpi/acevents.h>
+#include <acpi/acnamesp.h>
 
 #define _COMPONENT          ACPI_EVENTS
-	 MODULE_NAME         ("evxfevnt")
+	 ACPI_MODULE_NAME    ("evxfevnt")
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_enable
+ * FUNCTION:    acpi_enable
  *
  * PARAMETERS:  None
  *
@@ -50,74 +65,79 @@
 acpi_status
 acpi_enable (void)
 {
-	acpi_status             status;
+	acpi_status                     status = AE_OK;
 
 
-	FUNCTION_TRACE ("Acpi_enable");
+	ACPI_FUNCTION_TRACE ("acpi_enable");
 
 
-	/* Make sure we've got ACPI tables */
+	/* Make sure we have the FADT*/
 
-	if (!acpi_gbl_DSDT) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No ACPI tables present!\n"));
+	if (!acpi_gbl_FADT) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
 		return_ACPI_STATUS (AE_NO_ACPI_TABLES);
 	}
 
-	/* Make sure the BIOS supports ACPI mode */
-
-	if (SYS_MODE_LEGACY == acpi_hw_get_mode_capabilities()) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Only legacy mode supported!\n"));
-		return_ACPI_STATUS (AE_ERROR);
+	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
 	}
+	else {
+		/* Transition to ACPI mode */
 
-	/* Transition to ACPI mode */
+		status = acpi_hw_set_mode (ACPI_SYS_MODE_ACPI);
+		if (ACPI_FAILURE (status)) {
+			ACPI_REPORT_ERROR (("Could not transition to ACPI mode.\n"));
+			return_ACPI_STATUS (status);
+		}
 
-	status = acpi_hw_set_mode (SYS_MODE_ACPI);
-	if (ACPI_FAILURE (status)) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_FATAL, "Could not transition to ACPI mode.\n"));
-		return_ACPI_STATUS (status);
+		ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Transition to ACPI mode successful\n"));
 	}
 
-	ACPI_DEBUG_PRINT ((ACPI_DB_OK, "Transition to ACPI mode successful\n"));
-
 	return_ACPI_STATUS (status);
 }
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_disable
+ * FUNCTION:    acpi_disable
  *
  * PARAMETERS:  None
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Returns the system to original ACPI/legacy mode, and
- *              uninstalls the SCI interrupt handler.
+ * DESCRIPTION: Transfers the system into LEGACY mode.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_disable (void)
 {
-	acpi_status             status;
+	acpi_status                     status = AE_OK;
 
 
-	FUNCTION_TRACE ("Acpi_disable");
+	ACPI_FUNCTION_TRACE ("acpi_disable");
 
 
-	/* Restore original mode  */
+	if (!acpi_gbl_FADT) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
+		return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+	}
 
-	status = acpi_hw_set_mode (acpi_gbl_original_mode);
-	if (ACPI_FAILURE (status)) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unable to transition to original mode"));
-		return_ACPI_STATUS (status);
+	if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in legacy (non-ACPI) mode\n"));
 	}
+	else {
+		/* Transition to LEGACY mode */
+
+		status = acpi_hw_set_mode (ACPI_SYS_MODE_LEGACY);
 
-	/* Unload the SCI interrupt handler  */
+		if (ACPI_FAILURE (status)) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not exit ACPI mode to legacy mode"));
+			return_ACPI_STATUS (status);
+		}
 
-	acpi_ev_remove_sci_handler ();
-	acpi_ev_restore_acpi_state ();
+		ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
+	}
 
 	return_ACPI_STATUS (status);
 }
@@ -125,107 +145,179 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_enable_event
+ * FUNCTION:    acpi_enable_event
  *
- * PARAMETERS:  Event           - The fixed event or GPE to be enabled
- *              Type            - The type of event
- *              Flags           - Just enable, or also wake enable?
+ * PARAMETERS:  Event           - The fixed eventto be enabled
+ *              Flags           - Reserved
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enable an ACPI event (fixed and general purpose)
+ * DESCRIPTION: Enable an ACPI event (fixed)
  *
  ******************************************************************************/
 
 acpi_status
 acpi_enable_event (
-	u32                     event,
-	u32                     type,
-	u32                     flags)
+	u32                             event,
+	u32                             flags)
 {
-	acpi_status             status = AE_OK;
-	u32                     register_id;
+	acpi_status                     status = AE_OK;
+	u32                             value;
 
 
-	FUNCTION_TRACE ("Acpi_enable_event");
+	ACPI_FUNCTION_TRACE ("acpi_enable_event");
 
 
-	/* The Type must be either Fixed Acpi_event or GPE */
+	/* Decode the Fixed Event */
 
-	switch (type) {
+	if (event > ACPI_EVENT_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
 
-	case ACPI_EVENT_FIXED:
+	/*
+	 * Enable the requested fixed event (by writing a one to the
+	 * enable register bit)
+	 */
+	status = acpi_set_register (acpi_gbl_fixed_event_info[event].enable_register_id,
+			 1, ACPI_MTX_LOCK);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
 
-		/* Decode the Fixed Acpi_event */
+	/* Make sure that the hardware responded */
 
-		switch (event) {
-		case ACPI_EVENT_PMTIMER:
-			register_id = TMR_EN;
-			break;
+	status = acpi_get_register (acpi_gbl_fixed_event_info[event].enable_register_id,
+			  &value, ACPI_MTX_LOCK);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
 
-		case ACPI_EVENT_GLOBAL:
-			register_id = GBL_EN;
-			break;
+	if (value != 1) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Could not enable %s event\n", acpi_ut_get_event_name (event)));
+		return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
+	}
 
-		case ACPI_EVENT_POWER_BUTTON:
-			register_id = PWRBTN_EN;
-			break;
+	return_ACPI_STATUS (status);
+}
 
-		case ACPI_EVENT_SLEEP_BUTTON:
-			register_id = SLPBTN_EN;
-			break;
 
-		case ACPI_EVENT_RTC:
-			register_id = RTC_EN;
-			break;
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_enable_gpe
+ *
+ * PARAMETERS:  gpe_device      - Parent GPE Device
+ *              gpe_number      - GPE level within the GPE block
+ *              Flags           - Just enable, or also wake enable?
+ *                                Called from ISR or not
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable an ACPI event (general purpose)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_enable_gpe (
+	acpi_handle                     gpe_device,
+	u32                             gpe_number,
+	u32                             flags)
+{
+	acpi_status                     status = AE_OK;
+	struct acpi_gpe_event_info      *gpe_event_info;
 
-		default:
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-			break;
-		}
 
-		/*
-		 * Enable the requested fixed event (by writing a one to the
-		 * enable register bit)
-		 */
-		acpi_hw_register_bit_access (ACPI_WRITE, ACPI_MTX_LOCK, register_id, 1);
-
-		if (1 != acpi_hw_register_bit_access(ACPI_READ, ACPI_MTX_LOCK, register_id)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-				"Fixed event bit clear when it should be set\n"));
-			return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
+	ACPI_FUNCTION_TRACE ("acpi_enable_gpe");
+
+
+	/* Use semaphore lock if not executing at interrupt level */
+
+	if (flags & ACPI_NOT_ISR) {
+		status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
 		}
+	}
 
-		break;
+	/* Ensure that we have a valid GPE number */
 
+	gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number);
+	if (!gpe_event_info) {
+		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
+	}
 
-	case ACPI_EVENT_GPE:
+	/* Enable the requested GPE number */
 
-		/* Ensure that we have a valid GPE number */
+	status = acpi_hw_enable_gpe (gpe_event_info);
+	if (ACPI_FAILURE (status)) {
+		goto unlock_and_exit;
+	}
 
-		if ((event > ACPI_GPE_MAX) ||
-			(acpi_gbl_gpe_valid[event] == ACPI_GPE_INVALID)) {
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-		}
+	if (flags & ACPI_EVENT_WAKE_ENABLE) {
+		acpi_hw_enable_gpe_for_wakeup (gpe_event_info);
+	}
 
+unlock_and_exit:
+	if (flags & ACPI_NOT_ISR) {
+		(void) acpi_ut_release_mutex (ACPI_MTX_EVENTS);
+	}
+	return_ACPI_STATUS (status);
+}
 
-		/* Enable the requested GPE number */
 
-		if (flags & ACPI_EVENT_ENABLE) {
-			acpi_hw_enable_gpe (event);
-		}
-		if (flags & ACPI_EVENT_WAKE_ENABLE) {
-			acpi_hw_enable_gpe_for_wakeup (event);
-		}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_disable_event
+ *
+ * PARAMETERS:  Event           - The fixed eventto be enabled
+ *              Flags           - Reserved
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Disable an ACPI event (fixed)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_disable_event (
+	u32                             event,
+	u32                             flags)
+{
+	acpi_status                     status = AE_OK;
+	u32                             value;
 
-		break;
 
+	ACPI_FUNCTION_TRACE ("acpi_disable_event");
 
-	default:
 
-		status = AE_BAD_PARAMETER;
+	/* Decode the Fixed Event */
+
+	if (event > ACPI_EVENT_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	/*
+	 * Disable the requested fixed event (by writing a zero to the
+	 * enable register bit)
+	 */
+	status = acpi_set_register (acpi_gbl_fixed_event_info[event].enable_register_id,
+			 0, ACPI_MTX_LOCK);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	status = acpi_get_register (acpi_gbl_fixed_event_info[event].enable_register_id,
+			 &value, ACPI_MTX_LOCK);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
 	}
 
+	if (value != 0) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Could not disable %s events\n", acpi_ut_get_event_name (event)));
+		return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
+	}
 
 	return_ACPI_STATUS (status);
 }
@@ -233,293 +325,412 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_disable_event
+ * FUNCTION:    acpi_disable_gpe
  *
- * PARAMETERS:  Event           - The fixed event or GPE to be enabled
- *              Type            - The type of event, fixed or general purpose
- *              Flags           - Wake disable vs. non-wake disable
+ * PARAMETERS:  gpe_device      - Parent GPE Device
+ *              gpe_number      - GPE level within the GPE block
+ *              Flags           - Just enable, or also wake enable?
+ *                                Called from ISR or not
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Disable an ACPI event (fixed and general purpose)
+ * DESCRIPTION: Disable an ACPI event (general purpose)
  *
  ******************************************************************************/
 
 acpi_status
-acpi_disable_event (
-	u32                     event,
-	u32                     type,
-	u32                     flags)
+acpi_disable_gpe (
+	acpi_handle                     gpe_device,
+	u32                             gpe_number,
+	u32                             flags)
 {
-	acpi_status             status = AE_OK;
-	u32                     register_id;
+	acpi_status                     status = AE_OK;
+	struct acpi_gpe_event_info      *gpe_event_info;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_disable_gpe");
+
+
+	/* Use semaphore lock if not executing at interrupt level */
+
+	if (flags & ACPI_NOT_ISR) {
+		status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
 
+	/* Ensure that we have a valid GPE number */
 
-	FUNCTION_TRACE ("Acpi_disable_event");
+	gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number);
+	if (!gpe_event_info) {
+		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
+	}
+
+	/*
+	 * Only disable the requested GPE number for wake if specified.
+	 * Otherwise, turn it totally off
+	 */
+	if (flags & ACPI_EVENT_WAKE_DISABLE) {
+		acpi_hw_disable_gpe_for_wakeup (gpe_event_info);
+	}
+	else {
+		status = acpi_hw_disable_gpe (gpe_event_info);
+	}
 
+unlock_and_exit:
+	if (flags & ACPI_NOT_ISR) {
+		(void) acpi_ut_release_mutex (ACPI_MTX_EVENTS);
+	}
+	return_ACPI_STATUS (status);
+}
 
-	/* The Type must be either Fixed Acpi_event or GPE */
 
-	switch (type) {
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_clear_event
+ *
+ * PARAMETERS:  Event           - The fixed event to be cleared
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear an ACPI event (fixed)
+ *
+ ******************************************************************************/
 
-	case ACPI_EVENT_FIXED:
+acpi_status
+acpi_clear_event (
+	u32                             event)
+{
+	acpi_status                     status = AE_OK;
 
-		/* Decode the Fixed Acpi_event */
 
-		switch (event) {
-		case ACPI_EVENT_PMTIMER:
-			register_id = TMR_EN;
-			break;
+	ACPI_FUNCTION_TRACE ("acpi_clear_event");
 
-		case ACPI_EVENT_GLOBAL:
-			register_id = GBL_EN;
-			break;
 
-		case ACPI_EVENT_POWER_BUTTON:
-			register_id = PWRBTN_EN;
-			break;
+	/* Decode the Fixed Event */
 
-		case ACPI_EVENT_SLEEP_BUTTON:
-			register_id = SLPBTN_EN;
-			break;
+	if (event > ACPI_EVENT_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
 
-		case ACPI_EVENT_RTC:
-			register_id = RTC_EN;
-			break;
+	/*
+	 * Clear the requested fixed event (By writing a one to the
+	 * status register bit)
+	 */
+	status = acpi_set_register (acpi_gbl_fixed_event_info[event].status_register_id,
+			1, ACPI_MTX_LOCK);
 
-		default:
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-			break;
-		}
+	return_ACPI_STATUS (status);
+}
 
-		/*
-		 * Disable the requested fixed event (by writing a zero to the
-		 * enable register bit)
-		 */
-		acpi_hw_register_bit_access (ACPI_WRITE, ACPI_MTX_LOCK, register_id, 0);
-
-		if (0 != acpi_hw_register_bit_access(ACPI_READ, ACPI_MTX_LOCK, register_id)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-				"Fixed event bit set when it should be clear,\n"));
-			return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
-		}
 
-		break;
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_clear_gpe
+ *
+ * PARAMETERS:  gpe_device      - Parent GPE Device
+ *              gpe_number      - GPE level within the GPE block
+ *              Flags           - Called from an ISR or not
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear an ACPI event (general purpose)
+ *
+ ******************************************************************************/
 
+acpi_status
+acpi_clear_gpe (
+	acpi_handle                     gpe_device,
+	u32                             gpe_number,
+	u32                             flags)
+{
+	acpi_status                     status = AE_OK;
+	struct acpi_gpe_event_info      *gpe_event_info;
 
-	case ACPI_EVENT_GPE:
 
-		/* Ensure that we have a valid GPE number */
+	ACPI_FUNCTION_TRACE ("acpi_clear_gpe");
 
-		if ((event > ACPI_GPE_MAX) ||
-			(acpi_gbl_gpe_valid[event] == ACPI_GPE_INVALID)) {
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-		}
 
-		/* Disable the requested GPE number */
+	/* Use semaphore lock if not executing at interrupt level */
 
-		if (flags & ACPI_EVENT_DISABLE) {
-			acpi_hw_disable_gpe (event);
-		}
-		if (flags & ACPI_EVENT_WAKE_DISABLE) {
-			acpi_hw_disable_gpe_for_wakeup (event);
+	if (flags & ACPI_NOT_ISR) {
+		status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
 		}
+	}
 
-		break;
-
+	/* Ensure that we have a valid GPE number */
 
-	default:
+	gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number);
+	if (!gpe_event_info) {
 		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
 	}
 
+	status = acpi_hw_clear_gpe (gpe_event_info);
+
+unlock_and_exit:
+	if (flags & ACPI_NOT_ISR) {
+		(void) acpi_ut_release_mutex (ACPI_MTX_EVENTS);
+	}
 	return_ACPI_STATUS (status);
 }
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_clear_event
+ * FUNCTION:    acpi_get_event_status
  *
- * PARAMETERS:  Event           - The fixed event or GPE to be cleared
- *              Type            - The type of event
+ * PARAMETERS:  Event           - The fixed event
+ *              Event Status    - Where the current status of the event will
+ *                                be returned
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Clear an ACPI event (fixed and general purpose)
+ * DESCRIPTION: Obtains and returns the current status of the event
  *
  ******************************************************************************/
 
 acpi_status
-acpi_clear_event (
-	u32                     event,
-	u32                     type)
+acpi_get_event_status (
+	u32                             event,
+	acpi_event_status               *event_status)
 {
-	acpi_status             status = AE_OK;
-	u32                     register_id;
-
+	acpi_status                     status = AE_OK;
 
-	FUNCTION_TRACE ("Acpi_clear_event");
 
+	ACPI_FUNCTION_TRACE ("acpi_get_event_status");
 
-	/* The Type must be either Fixed Acpi_event or GPE */
 
-	switch (type) {
+	if (!event_status) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
 
-	case ACPI_EVENT_FIXED:
+	/* Decode the Fixed Event */
 
-		/* Decode the Fixed Acpi_event */
+	if (event > ACPI_EVENT_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
 
-		switch (event) {
-		case ACPI_EVENT_PMTIMER:
-			register_id = TMR_STS;
-			break;
+	/* Get the status of the requested fixed event */
 
-		case ACPI_EVENT_GLOBAL:
-			register_id = GBL_STS;
-			break;
+	status = acpi_get_register (acpi_gbl_fixed_event_info[event].status_register_id,
+			  event_status, ACPI_MTX_LOCK);
 
-		case ACPI_EVENT_POWER_BUTTON:
-			register_id = PWRBTN_STS;
-			break;
+	return_ACPI_STATUS (status);
+}
 
-		case ACPI_EVENT_SLEEP_BUTTON:
-			register_id = SLPBTN_STS;
-			break;
 
-		case ACPI_EVENT_RTC:
-			register_id = RTC_STS;
-			break;
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_gpe_status
+ *
+ * PARAMETERS:  gpe_device      - Parent GPE Device
+ *              gpe_number      - GPE level within the GPE block
+ *              Flags           - Called from an ISR or not
+ *              Event Status    - Where the current status of the event will
+ *                                be returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get status of an event (general purpose)
+ *
+ ******************************************************************************/
 
-		default:
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-			break;
-		}
+acpi_status
+acpi_get_gpe_status (
+	acpi_handle                     gpe_device,
+	u32                             gpe_number,
+	u32                             flags,
+	acpi_event_status               *event_status)
+{
+	acpi_status                     status = AE_OK;
+	struct acpi_gpe_event_info      *gpe_event_info;
 
-		/*
-		 * Clear the requested fixed event (By writing a one to the
-		 * status register bit)
-		 */
-		acpi_hw_register_bit_access (ACPI_WRITE, ACPI_MTX_LOCK, register_id, 1);
-		break;
 
+	ACPI_FUNCTION_TRACE ("acpi_get_gpe_status");
 
-	case ACPI_EVENT_GPE:
 
-		/* Ensure that we have a valid GPE number */
+	/* Use semaphore lock if not executing at interrupt level */
 
-		if ((event > ACPI_GPE_MAX) ||
-			(acpi_gbl_gpe_valid[event] == ACPI_GPE_INVALID)) {
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
+	if (flags & ACPI_NOT_ISR) {
+		status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
 		}
+	}
 
+	/* Ensure that we have a valid GPE number */
 
-		acpi_hw_clear_gpe (event);
-		break;
+	gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number);
+	if (!gpe_event_info) {
+		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
+	}
 
+	/* Obtain status on the requested GPE number */
 
-	default:
+	status = acpi_hw_get_gpe_status (gpe_event_info, event_status);
 
-		status = AE_BAD_PARAMETER;
+unlock_and_exit:
+	if (flags & ACPI_NOT_ISR) {
+		(void) acpi_ut_release_mutex (ACPI_MTX_EVENTS);
 	}
-
 	return_ACPI_STATUS (status);
 }
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_get_event_status
+ * FUNCTION:    acpi_install_gpe_block
  *
- * PARAMETERS:  Event           - The fixed event or GPE
- *              Type            - The type of event
- *              Status          - Where the current status of the event will
- *                                be returned
+ * PARAMETERS:  gpe_device          - Handle to the parent GPE Block Device
+ *              gpe_block_address   - Address and space_iD
+ *              register_count      - Number of GPE register pairs in the block
+ *              interrupt_level     - H/W interrupt for the block
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Obtains and returns the current status of the event
+ * DESCRIPTION: Create and Install a block of GPE registers
  *
  ******************************************************************************/
 
-
 acpi_status
-acpi_get_event_status (
-	u32                     event,
-	u32                     type,
-	acpi_event_status       *event_status)
+acpi_install_gpe_block (
+	acpi_handle                     gpe_device,
+	struct acpi_generic_address     *gpe_block_address,
+	u32                             register_count,
+	u32                             interrupt_level)
 {
-	acpi_status             status = AE_OK;
-	u32                     register_id;
+	acpi_status                     status;
+	union acpi_operand_object       *obj_desc;
+	struct acpi_namespace_node      *node;
+	struct acpi_gpe_block_info      *gpe_block;
 
 
-	FUNCTION_TRACE ("Acpi_get_event_status");
+	ACPI_FUNCTION_TRACE ("acpi_install_gpe_block");
 
 
-	if (!event_status) {
+	if ((!gpe_device)      ||
+		(!gpe_block_address) ||
+		(!register_count)) {
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
+	status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE (status)) {
+		return (status);
+	}
 
-	/* The Type must be either Fixed Acpi_event or GPE */
-
-	switch (type) {
+	node = acpi_ns_map_handle_to_node (gpe_device);
+	if (!node) {
+		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
+	}
 
-	case ACPI_EVENT_FIXED:
+	/*
+	 * For user-installed GPE Block Devices, the gpe_block_base_number
+	 * is always zero
+	 */
+	status = acpi_ev_create_gpe_block (node, gpe_block_address, register_count,
+			  0, interrupt_level, &gpe_block);
+	if (ACPI_FAILURE (status)) {
+		goto unlock_and_exit;
+	}
 
-		/* Decode the Fixed Acpi_event */
+	/* Get the device_object attached to the node */
 
-		switch (event) {
-		case ACPI_EVENT_PMTIMER:
-			register_id = TMR_STS;
-			break;
+	obj_desc = acpi_ns_get_attached_object (node);
+	if (!obj_desc) {
+		/* No object, create a new one */
 
-		case ACPI_EVENT_GLOBAL:
-			register_id = GBL_STS;
-			break;
+		obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_DEVICE);
+		if (!obj_desc) {
+			status = AE_NO_MEMORY;
+			goto unlock_and_exit;
+		}
 
-		case ACPI_EVENT_POWER_BUTTON:
-			register_id = PWRBTN_STS;
-			break;
+		status = acpi_ns_attach_object (node, obj_desc, ACPI_TYPE_DEVICE);
 
-		case ACPI_EVENT_SLEEP_BUTTON:
-			register_id = SLPBTN_STS;
-			break;
+		/* Remove local reference to the object */
 
-		case ACPI_EVENT_RTC:
-			register_id = RTC_STS;
-			break;
+		acpi_ut_remove_reference (obj_desc);
 
-		default:
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-			break;
+		if (ACPI_FAILURE (status)) {
+			goto unlock_and_exit;
 		}
+	}
+
+	/* Install the GPE block in the device_object */
 
-		/* Get the status of the requested fixed event */
+	obj_desc->device.gpe_block = gpe_block;
 
-		*event_status = acpi_hw_register_bit_access (ACPI_READ, ACPI_MTX_LOCK, register_id);
-		break;
 
+unlock_and_exit:
+	(void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+	return_ACPI_STATUS (status);
+}
 
-	case ACPI_EVENT_GPE:
 
-		/* Ensure that we have a valid GPE number */
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_remove_gpe_block
+ *
+ * PARAMETERS:  gpe_device          - Handle to the parent GPE Block Device
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Remove a previously installed block of GPE registers
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_remove_gpe_block (
+	acpi_handle                     gpe_device)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+	struct acpi_namespace_node      *node;
 
-		if ((event > ACPI_GPE_MAX) ||
-			(acpi_gbl_gpe_valid[event] == ACPI_GPE_INVALID)) {
-			return_ACPI_STATUS (AE_BAD_PARAMETER);
-		}
 
+	ACPI_FUNCTION_TRACE ("acpi_remove_gpe_block");
 
-		/* Obtain status on the requested GPE number */
 
-		acpi_hw_get_gpe_status (event, event_status);
-		break;
+	if (!gpe_device) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
 
+	status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE (status)) {
+		return (status);
+	}
 
-	default:
+	node = acpi_ns_map_handle_to_node (gpe_device);
+	if (!node) {
 		status = AE_BAD_PARAMETER;
+		goto unlock_and_exit;
+	}
+
+	/* Get the device_object attached to the node */
+
+	obj_desc = acpi_ns_get_attached_object (node);
+	if (!obj_desc ||
+		!obj_desc->device.gpe_block) {
+		return_ACPI_STATUS (AE_NULL_OBJECT);
+	}
+
+	/* Delete the GPE block (but not the device_object) */
+
+	status = acpi_ev_delete_gpe_block (obj_desc->device.gpe_block);
+	if (ACPI_SUCCESS (status)) {
+		obj_desc->device.gpe_block = NULL;
 	}
 
+unlock_and_exit:
+	(void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
 	return_ACPI_STATUS (status);
 }
 

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)