Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
new file mode 100644
index 0000000..2548efa
--- /dev/null
+++ b/drivers/acpi/events/evmisc.c
@@ -0,0 +1,588 @@
+/******************************************************************************
+ *
+ * Module Name: evmisc - Miscellaneous event manager support functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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/acevents.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acinterp.h>
+
+#define _COMPONENT ACPI_EVENTS
+ ACPI_MODULE_NAME ("evmisc")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_is_notify_object
+ *
+ * PARAMETERS: Node - Node to check
+ *
+ * RETURN: TRUE if notifies allowed on this object
+ *
+ * DESCRIPTION: Check type of node for a object that supports notifies.
+ *
+ * TBD: This could be replaced by a flag bit in the node.
+ *
+ ******************************************************************************/
+
+u8
+acpi_ev_is_notify_object (
+ struct acpi_namespace_node *node)
+{
+ switch (node->type) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_POWER:
+ case ACPI_TYPE_THERMAL:
+ /*
+ * These are the ONLY objects that can receive ACPI notifications
+ */
+ return (TRUE);
+
+ default:
+ return (FALSE);
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_queue_notify_request
+ *
+ * PARAMETERS: Node - NS node for the notified object
+ * notify_value - Value from the Notify() request
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Dispatch a device notification event to a previously
+ * installed handler.
+ *
+ ******************************************************************************/
+
+#ifdef ACPI_DEBUG_OUTPUT
+static const char *acpi_notify_value_names[] =
+{
+ "Bus Check",
+ "Device Check",
+ "Device Wake",
+ "Eject request",
+ "Device Check Light",
+ "Frequency Mismatch",
+ "Bus Mode Mismatch",
+ "Power Fault"
+};
+#endif
+
+acpi_status
+acpi_ev_queue_notify_request (
+ struct acpi_namespace_node *node,
+ u32 notify_value)
+{
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *handler_obj = NULL;
+ union acpi_generic_state *notify_info;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_NAME ("ev_queue_notify_request");
+
+
+ /*
+ * For value 3 (Ejection Request), some device method may need to be run.
+ * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need to be run.
+ * For value 0x80 (Status Change) on the power button or sleep button,
+ * initiate soft-off or sleep operation?
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Dispatching Notify(%X) on node %p\n", notify_value, node));
+
+ if (notify_value <= 7) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: %s\n",
+ acpi_notify_value_names[notify_value]));
+ }
+ else {
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: 0x%2.2X **Device Specific**\n",
+ notify_value));
+ }
+
+ /* Get the notify object attached to the NS Node */
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (obj_desc) {
+ /* We have the notify object, Get the right handler */
+
+ switch (node->type) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_POWER:
+
+ if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
+ handler_obj = obj_desc->common_notify.system_notify;
+ }
+ else {
+ handler_obj = obj_desc->common_notify.device_notify;
+ }
+ break;
+
+ default:
+ /* All other types are not supported */
+ return (AE_TYPE);
+ }
+ }
+
+ /* If there is any handler to run, schedule the dispatcher */
+
+ if ((acpi_gbl_system_notify.handler && (notify_value <= ACPI_MAX_SYS_NOTIFY)) ||
+ (acpi_gbl_device_notify.handler && (notify_value > ACPI_MAX_SYS_NOTIFY)) ||
+ handler_obj) {
+ notify_info = acpi_ut_create_generic_state ();
+ if (!notify_info) {
+ return (AE_NO_MEMORY);
+ }
+
+ notify_info->common.data_type = ACPI_DESC_TYPE_STATE_NOTIFY;
+ notify_info->notify.node = node;
+ notify_info->notify.value = (u16) notify_value;
+ notify_info->notify.handler_obj = handler_obj;
+
+ status = acpi_os_queue_for_execution (OSD_PRIORITY_HIGH,
+ acpi_ev_notify_dispatch, notify_info);
+ if (ACPI_FAILURE (status)) {
+ acpi_ut_delete_generic_state (notify_info);
+ }
+ }
+
+ if (!handler_obj) {
+ /*
+ * There is no per-device notify handler for this device.
+ * This may or may not be a problem.
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "No notify handler for Notify(%4.4s, %X) node %p\n",
+ acpi_ut_get_node_name (node), notify_value, node));
+ }
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_notify_dispatch
+ *
+ * PARAMETERS: Context - To be passsed to the notify handler
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Dispatch a device notification event to a previously
+ * installed handler.
+ *
+ ******************************************************************************/
+
+void ACPI_SYSTEM_XFACE
+acpi_ev_notify_dispatch (
+ void *context)
+{
+ union acpi_generic_state *notify_info = (union acpi_generic_state *) context;
+ acpi_notify_handler global_handler = NULL;
+ void *global_context = NULL;
+ union acpi_operand_object *handler_obj;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ /*
+ * We will invoke a global notify handler if installed.
+ * This is done _before_ we invoke the per-device handler attached to the device.
+ */
+ if (notify_info->notify.value <= ACPI_MAX_SYS_NOTIFY) {
+ /* Global system notification handler */
+
+ if (acpi_gbl_system_notify.handler) {
+ global_handler = acpi_gbl_system_notify.handler;
+ global_context = acpi_gbl_system_notify.context;
+ }
+ }
+ else {
+ /* Global driver notification handler */
+
+ if (acpi_gbl_device_notify.handler) {
+ global_handler = acpi_gbl_device_notify.handler;
+ global_context = acpi_gbl_device_notify.context;
+ }
+ }
+
+ /* Invoke the system handler first, if present */
+
+ if (global_handler) {
+ global_handler (notify_info->notify.node, notify_info->notify.value, global_context);
+ }
+
+ /* Now invoke the per-device handler, if present */
+
+ handler_obj = notify_info->notify.handler_obj;
+ if (handler_obj) {
+ handler_obj->notify.handler (notify_info->notify.node, notify_info->notify.value,
+ handler_obj->notify.context);
+ }
+
+ /* All done with the info object */
+
+ acpi_ut_delete_generic_state (notify_info);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_global_lock_thread
+ *
+ * PARAMETERS: Context - From thread interface, not used
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Invoked by SCI interrupt handler upon acquisition of the
+ * Global Lock. Simply signal all threads that are waiting
+ * for the lock.
+ *
+ ******************************************************************************/
+
+static void ACPI_SYSTEM_XFACE
+acpi_ev_global_lock_thread (
+ void *context)
+{
+ acpi_status status;
+
+
+ /* Signal threads that are waiting for the lock */
+
+ if (acpi_gbl_global_lock_thread_count) {
+ /* Send sufficient units to the semaphore */
+
+ status = acpi_os_signal_semaphore (acpi_gbl_global_lock_semaphore,
+ acpi_gbl_global_lock_thread_count);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not signal Global Lock semaphore\n"));
+ }
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_global_lock_handler
+ *
+ * PARAMETERS: Context - From thread interface, not used
+ *
+ * RETURN: ACPI_INTERRUPT_HANDLED or ACPI_INTERRUPT_NOT_HANDLED
+ *
+ * DESCRIPTION: Invoked directly from the SCI handler when a global lock
+ * release interrupt occurs. Grab the global lock and queue
+ * the global lock thread for execution
+ *
+ ******************************************************************************/
+
+static u32
+acpi_ev_global_lock_handler (
+ void *context)
+{
+ u8 acquired = FALSE;
+ acpi_status status;
+
+
+ /*
+ * Attempt to get the lock
+ * If we don't get it now, it will be marked pending and we will
+ * take another interrupt when it becomes free.
+ */
+ ACPI_ACQUIRE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, acquired);
+ if (acquired) {
+ /* Got the lock, now wake all threads waiting for it */
+
+ acpi_gbl_global_lock_acquired = TRUE;
+
+ /* Run the Global Lock thread which will signal all waiting threads */
+
+ status = acpi_os_queue_for_execution (OSD_PRIORITY_HIGH,
+ acpi_ev_global_lock_thread, context);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not queue Global Lock thread, %s\n",
+ acpi_format_exception (status)));
+
+ return (ACPI_INTERRUPT_NOT_HANDLED);
+ }
+ }
+
+ return (ACPI_INTERRUPT_HANDLED);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_init_global_lock_handler
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Install a handler for the global lock release event
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_init_global_lock_handler (void)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_init_global_lock_handler");
+
+
+ acpi_gbl_global_lock_present = TRUE;
+ status = acpi_install_fixed_event_handler (ACPI_EVENT_GLOBAL,
+ acpi_ev_global_lock_handler, NULL);
+
+ /*
+ * If the global lock does not exist on this platform, the attempt
+ * to enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick)
+ * Map to AE_OK, but mark global lock as not present.
+ * Any attempt to actually use the global lock will be flagged
+ * with an error.
+ */
+ if (status == AE_NO_HARDWARE_RESPONSE) {
+ acpi_gbl_global_lock_present = FALSE;
+ status = AE_OK;
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ev_acquire_global_lock
+ *
+ * PARAMETERS: Timeout - Max time to wait for the lock, in millisec.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Attempt to gain ownership of the Global Lock.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_ev_acquire_global_lock (
+ u16 timeout)
+{
+ acpi_status status = AE_OK;
+ u8 acquired = FALSE;
+
+
+ ACPI_FUNCTION_TRACE ("ev_acquire_global_lock");
+
+
+#ifndef ACPI_APPLICATION
+ /* Make sure that we actually have a global lock */
+
+ if (!acpi_gbl_global_lock_present) {
+ return_ACPI_STATUS (AE_NO_GLOBAL_LOCK);
+ }
+#endif
+
+ /* One more thread wants the global lock */
+
+ acpi_gbl_global_lock_thread_count++;
+
+ /* If we (OS side vs. BIOS side) have the hardware lock already, we are done */
+
+ if (acpi_gbl_global_lock_acquired) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* We must acquire the actual hardware lock */
+
+ ACPI_ACQUIRE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, acquired);
+ if (acquired) {
+ /* We got the lock */
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Acquired the HW Global Lock\n"));
+
+ acpi_gbl_global_lock_acquired = TRUE;
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /*
+ * Did not get the lock. The pending bit was set above, and we must now
+ * wait until we get the global lock released interrupt.
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Waiting for the HW Global Lock\n"));
+
+ /*
+ * Acquire the global lock semaphore first.
+ * Since this wait will block, we must release the interpreter
+ */
+ status = acpi_ex_system_wait_semaphore (acpi_gbl_global_lock_semaphore,
+ timeout);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_release_global_lock
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Releases ownership of the Global Lock.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_release_global_lock (void)
+{
+ u8 pending = FALSE;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE ("ev_release_global_lock");
+
+
+ if (!acpi_gbl_global_lock_thread_count) {
+ ACPI_REPORT_WARNING(("Cannot release HW Global Lock, it has not been acquired\n"));
+ return_ACPI_STATUS (AE_NOT_ACQUIRED);
+ }
+
+ /* One fewer thread has the global lock */
+
+ acpi_gbl_global_lock_thread_count--;
+ if (acpi_gbl_global_lock_thread_count) {
+ /* There are still some threads holding the lock, cannot release */
+
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /*
+ * No more threads holding lock, we can do the actual hardware
+ * release
+ */
+ ACPI_RELEASE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, pending);
+ acpi_gbl_global_lock_acquired = FALSE;
+
+ /*
+ * If the pending bit was set, we must write GBL_RLS to the control
+ * register
+ */
+ if (pending) {
+ status = acpi_set_register (ACPI_BITREG_GLOBAL_LOCK_RELEASE, 1, ACPI_MTX_LOCK);
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ev_terminate
+ *
+ * PARAMETERS: none
+ *
+ * RETURN: none
+ *
+ * DESCRIPTION: Disable events and free memory allocated for table storage.
+ *
+ ******************************************************************************/
+
+void
+acpi_ev_terminate (void)
+{
+ acpi_native_uint i;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_terminate");
+
+
+ if (acpi_gbl_events_initialized) {
+ /*
+ * Disable all event-related functionality.
+ * In all cases, on error, print a message but obviously we don't abort.
+ */
+
+ /* Disable all fixed events */
+
+ for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
+ status = acpi_disable_event ((u32) i, 0);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not disable fixed event %d\n", (u32) i));
+ }
+ }
+
+ /* Disable all GPEs in all GPE blocks */
+
+ status = acpi_ev_walk_gpe_list (acpi_hw_disable_gpe_block, ACPI_NOT_ISR);
+
+ /* Remove SCI handler */
+
+ status = acpi_ev_remove_sci_handler ();
+ if (ACPI_FAILURE(status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not remove SCI handler\n"));
+ }
+ }
+
+ /* Deallocate all handler objects installed within GPE info structs */
+
+ status = acpi_ev_walk_gpe_list (acpi_ev_delete_gpe_handlers, ACPI_NOT_ISR);
+
+ /* Return to original mode if necessary */
+
+ if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) {
+ status = acpi_disable ();
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_disable failed\n"));
+ }
+ }
+ return_VOID;
+}
+