Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 441 insertions, 0 deletions

diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
new file mode 100644
index 000000000000..4a46b380605b
--- /dev/null
+++ b/drivers/acpi/namespace/nsinit.c
@@ -0,0 +1,441 @@
+/******************************************************************************
+ *
+ * Module Name: nsinit - namespace initialization
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acnamesp.h>
+#include <acpi/acdispat.h>
+#include <acpi/acinterp.h>
+
+#define _COMPONENT          ACPI_NAMESPACE
+         ACPI_MODULE_NAME    ("nsinit")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_initialize_objects
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Walk the entire namespace and perform any necessary
+ *              initialization on the objects found therein
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_initialize_objects (
+        void)
+{
+        acpi_status                     status;
+        struct acpi_init_walk_info      info;
+
+
+        ACPI_FUNCTION_TRACE ("ns_initialize_objects");
+
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                "**** Starting initialization of namespace objects ****\n"));
+        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
+                "Completing Region/Field/Buffer/Package initialization:"));
+
+        /* Set all init info to zero */
+
+        ACPI_MEMSET (&info, 0, sizeof (struct acpi_init_walk_info));
+
+        /* Walk entire namespace from the supplied root */
+
+        status = acpi_walk_namespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+                          ACPI_UINT32_MAX, acpi_ns_init_one_object,
+                          &info, NULL);
+        if (ACPI_FAILURE (status)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed! %s\n",
+                        acpi_format_exception (status)));
+        }
+
+        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
+                "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
+                info.op_region_init, info.op_region_count,
+                info.field_init,    info.field_count,
+                info.buffer_init,   info.buffer_count,
+                info.package_init,  info.package_count, info.object_count));
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                "%hd Control Methods found\n", info.method_count));
+        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                "%hd Op Regions found\n", info.op_region_count));
+
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_initialize_devices
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      acpi_status
+ *
+ * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
+ *              This means running _INI on all present devices.
+ *
+ *              Note: We install PCI config space handler on region access,
+ *              not here.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_initialize_devices (
+        void)
+{
+        acpi_status                     status;
+        struct acpi_device_walk_info    info;
+
+
+        ACPI_FUNCTION_TRACE ("ns_initialize_devices");
+
+
+        /* Init counters */
+
+        info.device_count = 0;
+        info.num_STA = 0;
+        info.num_INI = 0;
+
+        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
+                "Executing all Device _STA and_INI methods:"));
+
+        status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Walk namespace for all objects */
+
+        status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+                          ACPI_UINT32_MAX, TRUE, acpi_ns_init_one_device, &info, NULL);
+
+        (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+
+        if (ACPI_FAILURE (status)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed! %s\n",
+                        acpi_format_exception (status)));
+        }
+
+        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
+                "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n",
+                info.device_count, info.num_STA, info.num_INI));
+
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_init_one_object
+ *
+ * PARAMETERS:  obj_handle      - Node
+ *              Level           - Current nesting level
+ *              Context         - Points to a init info struct
+ *              return_value    - Not used
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
+ *              within the  namespace.
+ *
+ *              Currently, the only objects that require initialization are:
+ *              1) Methods
+ *              2) Op Regions
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_init_one_object (
+        acpi_handle                     obj_handle,
+        u32                             level,
+        void                            *context,
+        void                            **return_value)
+{
+        acpi_object_type                type;
+        acpi_status                     status;
+        struct acpi_init_walk_info      *info = (struct acpi_init_walk_info *) context;
+        struct acpi_namespace_node      *node = (struct acpi_namespace_node *) obj_handle;
+        union acpi_operand_object       *obj_desc;
+
+
+        ACPI_FUNCTION_NAME ("ns_init_one_object");
+
+
+        info->object_count++;
+
+        /* And even then, we are only interested in a few object types */
+
+        type = acpi_ns_get_type (obj_handle);
+        obj_desc = acpi_ns_get_attached_object (node);
+        if (!obj_desc) {
+                return (AE_OK);
+        }
+
+        /* Increment counters for object types we are looking for */
+
+        switch (type) {
+        case ACPI_TYPE_REGION:
+                info->op_region_count++;
+                break;
+
+        case ACPI_TYPE_BUFFER_FIELD:
+                info->field_count++;
+                break;
+
+        case ACPI_TYPE_BUFFER:
+                info->buffer_count++;
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+                info->package_count++;
+                break;
+
+        default:
+
+                /* No init required, just exit now */
+                return (AE_OK);
+        }
+
+        /*
+         * If the object is already initialized, nothing else to do
+         */
+        if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
+                return (AE_OK);
+        }
+
+        /*
+         * Must lock the interpreter before executing AML code
+         */
+        status = acpi_ex_enter_interpreter ();
+        if (ACPI_FAILURE (status)) {
+                return (status);
+        }
+
+        /*
+         * Each of these types can contain executable AML code within the
+         * declaration.
+         */
+        switch (type) {
+        case ACPI_TYPE_REGION:
+
+                info->op_region_init++;
+                status = acpi_ds_get_region_arguments (obj_desc);
+                break;
+
+        case ACPI_TYPE_BUFFER_FIELD:
+
+                info->field_init++;
+                status = acpi_ds_get_buffer_field_arguments (obj_desc);
+                break;
+
+        case ACPI_TYPE_BUFFER:
+
+                info->buffer_init++;
+                status = acpi_ds_get_buffer_arguments (obj_desc);
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+
+                info->package_init++;
+                status = acpi_ds_get_package_arguments (obj_desc);
+                break;
+
+        default:
+                /* No other types can get here */
+                break;
+        }
+
+        if (ACPI_FAILURE (status)) {
+                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n"));
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Could not execute arguments for [%4.4s] (%s), %s\n",
+                                acpi_ut_get_node_name (node), acpi_ut_get_type_name (type),
+                                acpi_format_exception (status)));
+        }
+
+        /*
+         * Print a dot for each object unless we are going to print the entire
+         * pathname
+         */
+        if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
+                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
+        }
+
+        /*
+         * We ignore errors from above, and always return OK, since we don't want
+         * to abort the walk on any single error.
+         */
+        acpi_ex_exit_interpreter ();
+        return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_init_one_device
+ *
+ * PARAMETERS:  acpi_walk_callback
+ *
+ * RETURN:      acpi_status
+ *
+ * DESCRIPTION: This is called once per device soon after ACPI is enabled
+ *              to initialize each device. It determines if the device is
+ *              present, and if so, calls _INI.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_init_one_device (
+        acpi_handle                     obj_handle,
+        u32                             nesting_level,
+        void                            *context,
+        void                            **return_value)
+{
+        struct acpi_device_walk_info   *info = (struct acpi_device_walk_info *) context;
+        struct acpi_parameter_info      pinfo;
+        u32                             flags;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("ns_init_one_device");
+
+
+        pinfo.parameters = NULL;
+        pinfo.parameter_type = ACPI_PARAM_ARGS;
+
+        pinfo.node = acpi_ns_map_handle_to_node (obj_handle);
+        if (!pinfo.node) {
+                return_ACPI_STATUS (AE_BAD_PARAMETER);
+        }
+
+        /*
+         * We will run _STA/_INI on Devices, Processors and thermal_zones only
+         */
+        if ((pinfo.node->type != ACPI_TYPE_DEVICE)      &&
+                (pinfo.node->type != ACPI_TYPE_PROCESSOR)   &&
+                (pinfo.node->type != ACPI_TYPE_THERMAL)) {
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
+                (!(acpi_dbg_level & ACPI_LV_INFO))) {
+                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
+        }
+
+        info->device_count++;
+
+        /*
+         * Run _STA to determine if we can run _INI on the device.
+         */
+        ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_METHOD, pinfo.node, "_STA"));
+        status = acpi_ut_execute_STA (pinfo.node, &flags);
+
+        if (ACPI_FAILURE (status)) {
+                if (pinfo.node->type == ACPI_TYPE_DEVICE) {
+                        /* Ignore error and move on to next device */
+
+                        return_ACPI_STATUS (AE_OK);
+                }
+
+                /* _STA is not required for Processor or thermal_zone objects */
+        }
+        else {
+                info->num_STA++;
+
+                if (!(flags & 0x01)) {
+                        /* Don't look at children of a not present device */
+
+                        return_ACPI_STATUS(AE_CTRL_DEPTH);
+                }
+        }
+
+        /*
+         * The device is present. Run _INI.
+         */
+        ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_METHOD, pinfo.node, "_INI"));
+        status = acpi_ns_evaluate_relative ("_INI", &pinfo);
+        if (ACPI_FAILURE (status)) {
+                /* No _INI (AE_NOT_FOUND) means device requires no initialization */
+
+                if (status != AE_NOT_FOUND) {
+                        /* Ignore error and move on to next device */
+
+#ifdef ACPI_DEBUG_OUTPUT
+                        char                *scope_name = acpi_ns_get_external_pathname (pinfo.node);
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n",
+                                        scope_name, acpi_format_exception (status)));
+
+                        ACPI_MEM_FREE (scope_name);
+#endif
+                }
+
+                status = AE_OK;
+        }
+        else {
+                /* Delete any return object (especially if implicit_return is enabled) */
+
+                if (pinfo.return_object) {
+                        acpi_ut_remove_reference (pinfo.return_object);
+                }
+
+                /* Count of successful INIs */
+
+                info->num_INI++;
+        }
+
+        if (acpi_gbl_init_handler) {
+                /* External initialization handler is present, call it */
+
+                status = acpi_gbl_init_handler (pinfo.node, ACPI_INIT_DEVICE_INI);
+        }
+
+        return_ACPI_STATUS (status);
+}