1 files changed, 525 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utxface.c b/drivers/acpi/utilities/utxface.c
new file mode 100644
index 000000000000..97a91f3f06f0
--- /dev/null
+++ b/drivers/acpi/utilities/utxface.c
@@ -0,0 +1,525 @@
+/******************************************************************************
+ *
+ * Module Name: utxface - External interfaces for "global" ACPI 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 <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acevents.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acparser.h>
+#include <acpi/acdispat.h>
+#include <acpi/acdebug.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+         ACPI_MODULE_NAME    ("utxface")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_initialize_subsystem
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initializes all global variables.  This is the first function
+ *              called, so any early initialization belongs here.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_initialize_subsystem (
+        void)
+{
+        acpi_status                     status;
+
+        ACPI_FUNCTION_TRACE ("acpi_initialize_subsystem");
+
+
+        ACPI_DEBUG_EXEC (acpi_ut_init_stack_ptr_trace ());
+
+
+        /* Initialize all globals used by the subsystem */
+
+        acpi_ut_init_globals ();
+
+        /* Initialize the OS-Dependent layer */
+
+        status = acpi_os_initialize ();
+        if (ACPI_FAILURE (status)) {
+                ACPI_REPORT_ERROR (("OSD failed to initialize, %s\n",
+                        acpi_format_exception (status)));
+                return_ACPI_STATUS (status);
+        }
+
+        /* Create the default mutex objects */
+
+        status = acpi_ut_mutex_initialize ();
+        if (ACPI_FAILURE (status)) {
+                ACPI_REPORT_ERROR (("Global mutex creation failure, %s\n",
+                        acpi_format_exception (status)));
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Initialize the namespace manager and
+         * the root of the namespace tree
+         */
+
+        status = acpi_ns_root_initialize ();
+        if (ACPI_FAILURE (status)) {
+                ACPI_REPORT_ERROR (("Namespace initialization failure, %s\n",
+                        acpi_format_exception (status)));
+                return_ACPI_STATUS (status);
+        }
+
+
+        /* If configured, initialize the AML debugger */
+
+        ACPI_DEBUGGER_EXEC (status = acpi_db_initialize ());
+
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_enable_subsystem
+ *
+ * PARAMETERS:  Flags           - Init/enable Options
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Completes the subsystem initialization including hardware.
+ *              Puts system into ACPI mode if it isn't already.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_enable_subsystem (
+        u32                             flags)
+{
+        acpi_status                     status = AE_OK;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_enable_subsystem");
+
+
+        /*
+         * We must initialize the hardware before we can enable ACPI.
+         * The values from the FADT are validated here.
+         */
+        if (!(flags & ACPI_NO_HARDWARE_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI hardware\n"));
+
+                status = acpi_hw_initialize ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /* Enable ACPI mode */
+
+        if (!(flags & ACPI_NO_ACPI_ENABLE)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
+
+                acpi_gbl_original_mode = acpi_hw_get_mode();
+
+                status = acpi_enable ();
+                if (ACPI_FAILURE (status)) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_enable failed.\n"));
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /*
+         * Install the default op_region handlers. These are installed unless
+         * other handlers have already been installed via the
+         * install_address_space_handler interface.
+         */
+        if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing default address space handlers\n"));
+
+                status = acpi_ev_install_region_handlers ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /*
+         * Initialize ACPI Event handling (Fixed and General Purpose)
+         *
+         * NOTE: We must have the hardware AND events initialized before we can execute
+         * ANY control methods SAFELY.  Any control method can require ACPI hardware
+         * support, so the hardware MUST be initialized before execution!
+         */
+        if (!(flags & ACPI_NO_EVENT_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n"));
+
+                status = acpi_ev_initialize_events ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /* Install the SCI handler and Global Lock handler */
+
+        if (!(flags & ACPI_NO_HANDLER_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n"));
+
+                status = acpi_ev_install_xrupt_handlers ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        return_ACPI_STATUS (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_initialize_objects
+ *
+ * PARAMETERS:  Flags           - Init/enable Options
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Completes namespace initialization by initializing device
+ *              objects and executing AML code for Regions, buffers, etc.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_initialize_objects (
+        u32                             flags)
+{
+        acpi_status                     status = AE_OK;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_initialize_objects");
+
+
+        /*
+         * Run all _REG methods
+         *
+         * NOTE: Any objects accessed
+         * by the _REG methods will be automatically initialized, even if they
+         * contain executable AML (see call to acpi_ns_initialize_objects below).
+         */
+        if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Executing _REG op_region methods\n"));
+
+                status = acpi_ev_initialize_op_regions ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /*
+         * Initialize the objects that remain uninitialized.  This
+         * runs the executable AML that may be part of the declaration of these
+         * objects: operation_regions, buffer_fields, Buffers, and Packages.
+         */
+        if (!(flags & ACPI_NO_OBJECT_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Completing Initialization of ACPI Objects\n"));
+
+                status = acpi_ns_initialize_objects ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /*
+         * Initialize all device objects in the namespace
+         * This runs the _STA and _INI methods.
+         */
+        if (!(flags & ACPI_NO_DEVICE_INIT)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI Devices\n"));
+
+                status = acpi_ns_initialize_devices ();
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+        }
+
+        /*
+         * Empty the caches (delete the cached objects) on the assumption that
+         * the table load filled them up more than they will be at runtime --
+         * thus wasting non-paged memory.
+         */
+        status = acpi_purge_cached_objects ();
+
+        acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_terminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Shutdown the ACPI subsystem.  Release all resources.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_terminate (void)
+{
+        acpi_status                 status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_terminate");
+
+
+        /* Terminate the AML Debugger if present */
+
+        ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
+
+        /* Shutdown and free all resources */
+
+        acpi_ut_subsystem_shutdown ();
+
+
+        /* Free the mutex objects */
+
+        acpi_ut_mutex_terminate ();
+
+
+#ifdef ACPI_DEBUGGER
+
+        /* Shut down the debugger */
+
+        acpi_db_terminate ();
+#endif
+
+        /* Now we can shutdown the OS-dependent layer */
+
+        status = acpi_os_terminate ();
+        return_ACPI_STATUS (status);
+}
+
+
+#ifdef ACPI_FUTURE_USAGE
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_subsystem_status
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status of the ACPI subsystem
+ *
+ * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
+ *              before making any other calls, to ensure the subsystem initial-
+ *              ized successfully.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_subsystem_status (void)
+{
+        if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
+                return (AE_OK);
+        }
+        else {
+                return (AE_ERROR);
+        }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_get_system_info
+ *
+ * PARAMETERS:  out_buffer      - a pointer to a buffer to receive the
+ *                                resources for the device
+ *              buffer_length   - the number of bytes available in the buffer
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: This function is called to get information about the current
+ *              state of the ACPI subsystem.  It will return system information
+ *              in the out_buffer.
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the value of out_buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_system_info (
+        struct acpi_buffer              *out_buffer)
+{
+        struct acpi_system_info         *info_ptr;
+        u32                             i;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_get_system_info");
+
+
+        /* Parameter validation */
+
+        status = acpi_ut_validate_buffer (out_buffer);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Validate/Allocate/Clear caller buffer */
+
+        status = acpi_ut_initialize_buffer (out_buffer, sizeof (struct acpi_system_info));
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Populate the return buffer
+         */
+        info_ptr = (struct acpi_system_info *) out_buffer->pointer;
+
+        info_ptr->acpi_ca_version   = ACPI_CA_VERSION;
+
+        /* System flags (ACPI capabilities) */
+
+        info_ptr->flags             = ACPI_SYS_MODE_ACPI;
+
+        /* Timer resolution - 24 or 32 bits  */
+
+        if (!acpi_gbl_FADT) {
+                info_ptr->timer_resolution = 0;
+        }
+        else if (acpi_gbl_FADT->tmr_val_ext == 0) {
+                info_ptr->timer_resolution = 24;
+        }
+        else {
+                info_ptr->timer_resolution = 32;
+        }
+
+        /* Clear the reserved fields */
+
+        info_ptr->reserved1         = 0;
+        info_ptr->reserved2         = 0;
+
+        /* Current debug levels */
+
+        info_ptr->debug_layer       = acpi_dbg_layer;
+        info_ptr->debug_level       = acpi_dbg_level;
+
+        /* Current status of the ACPI tables, per table type */
+
+        info_ptr->num_table_types = NUM_ACPI_TABLE_TYPES;
+        for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) {
+                info_ptr->table_info[i].count = acpi_gbl_table_lists[i].count;
+        }
+
+        return_ACPI_STATUS (AE_OK);
+}
+EXPORT_SYMBOL(acpi_get_system_info);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_install_initialization_handler
+ *
+ * PARAMETERS:  Handler             - Callback procedure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install an initialization handler
+ *
+ * TBD: When a second function is added, must save the Function also.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_install_initialization_handler (
+        acpi_init_handler               handler,
+        u32                             function)
+{
+
+        if (!handler) {
+                return (AE_BAD_PARAMETER);
+        }
+
+        if (acpi_gbl_init_handler) {
+                return (AE_ALREADY_EXISTS);
+        }
+
+        acpi_gbl_init_handler = handler;
+        return AE_OK;
+}
+
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_purge_cached_objects
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Empty all caches (delete the cached objects)
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_purge_cached_objects (void)
+{
+        ACPI_FUNCTION_TRACE ("acpi_purge_cached_objects");
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+        acpi_ut_delete_generic_state_cache ();
+        acpi_ut_delete_object_cache ();
+        acpi_ds_delete_walk_state_cache ();
+        acpi_ps_delete_parse_cache ();
+#endif
+
+        return_ACPI_STATUS (AE_OK);
+}