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, 580 insertions, 0 deletions

diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
new file mode 100644
index 000000000000..4983a3378be5
--- /dev/null
+++ b/drivers/acpi/events/evrgnini.c
@@ -0,0 +1,580 @@
+/******************************************************************************
+ *
+ * Module Name: evrgnini- ACPI address_space (op_region) init
+ *
+ *****************************************************************************/
+
+/*
+ * 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>
+
+#define _COMPONENT          ACPI_EVENTS
+         ACPI_MODULE_NAME    ("evrgnini")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_system_memory_region_setup
+ *
+ * PARAMETERS:  Handle              - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling, a nop for now
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_system_memory_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        union acpi_operand_object       *region_desc = (union acpi_operand_object *) handle;
+        struct acpi_mem_space_context   *local_region_context;
+
+
+        ACPI_FUNCTION_TRACE ("ev_system_memory_region_setup");
+
+
+        if (function == ACPI_REGION_DEACTIVATE) {
+                if (*region_context) {
+                        ACPI_MEM_FREE (*region_context);
+                        *region_context = NULL;
+                }
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        /* Create a new context */
+
+        local_region_context = ACPI_MEM_CALLOCATE (sizeof (struct acpi_mem_space_context));
+        if (!(local_region_context)) {
+                return_ACPI_STATUS (AE_NO_MEMORY);
+        }
+
+        /* Save the region length and address for use in the handler */
+
+        local_region_context->length = region_desc->region.length;
+        local_region_context->address = region_desc->region.address;
+
+        *region_context = local_region_context;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_io_space_region_setup
+ *
+ * PARAMETERS:  Handle              - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_io_space_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        ACPI_FUNCTION_TRACE ("ev_io_space_region_setup");
+
+
+        if (function == ACPI_REGION_DEACTIVATE) {
+                *region_context = NULL;
+        }
+        else {
+                *region_context = handler_context;
+        }
+
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_pci_config_region_setup
+ *
+ * PARAMETERS:  Handle             - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling
+ *
+ * MUTEX:       Assumes namespace is not locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_pci_config_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        acpi_status                     status = AE_OK;
+        acpi_integer                    pci_value;
+        struct acpi_pci_id              *pci_id = *region_context;
+        union acpi_operand_object       *handler_obj;
+        struct acpi_namespace_node      *parent_node;
+        struct acpi_namespace_node      *pci_root_node;
+        union acpi_operand_object       *region_obj = (union acpi_operand_object   *) handle;
+        struct acpi_device_id           object_hID;
+
+
+        ACPI_FUNCTION_TRACE ("ev_pci_config_region_setup");
+
+
+        handler_obj = region_obj->region.handler;
+        if (!handler_obj) {
+                /*
+                 * No installed handler. This shouldn't happen because the dispatch
+                 * routine checks before we get here, but we check again just in case.
+                 */
+                ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
+                        "Attempting to init a region %p, with no handler\n", region_obj));
+                return_ACPI_STATUS (AE_NOT_EXIST);
+        }
+
+        *region_context = NULL;
+        if (function == ACPI_REGION_DEACTIVATE) {
+                if (pci_id) {
+                        ACPI_MEM_FREE (pci_id);
+                }
+                return_ACPI_STATUS (status);
+        }
+
+        parent_node = acpi_ns_get_parent_node (region_obj->region.node);
+
+        /*
+         * Get the _SEG and _BBN values from the device upon which the handler
+         * is installed.
+         *
+         * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
+         * This is the device the handler has been registered to handle.
+         */
+
+        /*
+         * If the address_space.Node is still pointing to the root, we need
+         * to scan upward for a PCI Root bridge and re-associate the op_region
+         * handlers with that device.
+         */
+        if (handler_obj->address_space.node == acpi_gbl_root_node) {
+                /* Start search from the parent object */
+
+                pci_root_node = parent_node;
+                while (pci_root_node != acpi_gbl_root_node) {
+                        status = acpi_ut_execute_HID (pci_root_node, &object_hID);
+                        if (ACPI_SUCCESS (status)) {
+                                /* Got a valid _HID, check if this is a PCI root */
+
+                                if (!(ACPI_STRNCMP (object_hID.value, PCI_ROOT_HID_STRING,
+                                                   sizeof (PCI_ROOT_HID_STRING)))) {
+                                        /* Install a handler for this PCI root bridge */
+
+                                        status = acpi_install_address_space_handler ((acpi_handle) pci_root_node,
+                                                           ACPI_ADR_SPACE_PCI_CONFIG,
+                                                           ACPI_DEFAULT_HANDLER, NULL, NULL);
+                                        if (ACPI_FAILURE (status)) {
+                                                if (status == AE_SAME_HANDLER) {
+                                                        /*
+                                                         * It is OK if the handler is already installed on the root
+                                                         * bridge.  Still need to return a context object for the
+                                                         * new PCI_Config operation region, however.
+                                                         */
+                                                        status = AE_OK;
+                                                }
+                                                else {
+                                                        ACPI_REPORT_ERROR ((
+                                                                "Could not install pci_config handler for Root Bridge %4.4s, %s\n",
+                                                                acpi_ut_get_node_name (pci_root_node), acpi_format_exception (status)));
+                                                }
+                                        }
+                                        break;
+                                }
+                        }
+
+                        pci_root_node = acpi_ns_get_parent_node (pci_root_node);
+                }
+
+                /* PCI root bridge not found, use namespace root node */
+        }
+        else {
+                pci_root_node = handler_obj->address_space.node;
+        }
+
+        /*
+         * If this region is now initialized, we are done.
+         * (install_address_space_handler could have initialized it)
+         */
+        if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        /* Region is still not initialized. Create a new context */
+
+        pci_id = ACPI_MEM_CALLOCATE (sizeof (struct acpi_pci_id));
+        if (!pci_id) {
+                return_ACPI_STATUS (AE_NO_MEMORY);
+        }
+
+        /*
+         * For PCI_Config space access, we need the segment, bus,
+         * device and function numbers.  Acquire them here.
+         */
+
+        /*
+         * Get the PCI device and function numbers from the _ADR object
+         * contained in the parent's scope.
+         */
+        status = acpi_ut_evaluate_numeric_object (METHOD_NAME__ADR, parent_node, &pci_value);
+
+        /*
+         * The default is zero, and since the allocation above zeroed
+         * the data, just do nothing on failure.
+         */
+        if (ACPI_SUCCESS (status)) {
+                pci_id->device  = ACPI_HIWORD (ACPI_LODWORD (pci_value));
+                pci_id->function = ACPI_LOWORD (ACPI_LODWORD (pci_value));
+        }
+
+        /* The PCI segment number comes from the _SEG method */
+
+        status = acpi_ut_evaluate_numeric_object (METHOD_NAME__SEG, pci_root_node, &pci_value);
+        if (ACPI_SUCCESS (status)) {
+                pci_id->segment = ACPI_LOWORD (pci_value);
+        }
+
+        /* The PCI bus number comes from the _BBN method */
+
+        status = acpi_ut_evaluate_numeric_object (METHOD_NAME__BBN, pci_root_node, &pci_value);
+        if (ACPI_SUCCESS (status)) {
+                pci_id->bus = ACPI_LOWORD (pci_value);
+        }
+
+        /* Complete this device's pci_id */
+
+        acpi_os_derive_pci_id (pci_root_node, region_obj->region.node, &pci_id);
+
+        *region_context = pci_id;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_pci_bar_region_setup
+ *
+ * PARAMETERS:  Handle              - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling
+ *
+ * MUTEX:       Assumes namespace is not locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_pci_bar_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        ACPI_FUNCTION_TRACE ("ev_pci_bar_region_setup");
+
+
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_cmos_region_setup
+ *
+ * PARAMETERS:  Handle              - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling
+ *
+ * MUTEX:       Assumes namespace is not locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_cmos_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        ACPI_FUNCTION_TRACE ("ev_cmos_region_setup");
+
+
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_default_region_setup
+ *
+ * PARAMETERS:  Handle              - Region we are interested in
+ *              Function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Do any prep work for region handling
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_default_region_setup (
+        acpi_handle                     handle,
+        u32                             function,
+        void                            *handler_context,
+        void                            **region_context)
+{
+        ACPI_FUNCTION_TRACE ("ev_default_region_setup");
+
+
+        if (function == ACPI_REGION_DEACTIVATE) {
+                *region_context = NULL;
+        }
+        else {
+                *region_context = handler_context;
+        }
+
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_initialize_region
+ *
+ * PARAMETERS:  region_obj      - Region we are initializing
+ *              acpi_ns_locked  - Is namespace locked?
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initializes the region, finds any _REG methods and saves them
+ *              for execution at a later time
+ *
+ *              Get the appropriate address space handler for a newly
+ *              created region.
+ *
+ *              This also performs address space specific initialization.  For
+ *              example, PCI regions must have an _ADR object that contains
+ *              a PCI address in the scope of the definition.  This address is
+ *              required to perform an access to PCI config space.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_initialize_region (
+        union acpi_operand_object       *region_obj,
+        u8                              acpi_ns_locked)
+{
+        union acpi_operand_object       *handler_obj;
+        union acpi_operand_object       *obj_desc;
+        acpi_adr_space_type             space_id;
+        struct acpi_namespace_node      *node;
+        acpi_status                     status;
+        struct acpi_namespace_node      *method_node;
+        acpi_name                       *reg_name_ptr = (acpi_name *) METHOD_NAME__REG;
+        union acpi_operand_object       *region_obj2;
+
+
+        ACPI_FUNCTION_TRACE_U32 ("ev_initialize_region", acpi_ns_locked);
+
+
+        if (!region_obj) {
+                return_ACPI_STATUS (AE_BAD_PARAMETER);
+        }
+
+        if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) {
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        region_obj2 = acpi_ns_get_secondary_object (region_obj);
+        if (!region_obj2) {
+                return_ACPI_STATUS (AE_NOT_EXIST);
+        }
+
+        node = acpi_ns_get_parent_node (region_obj->region.node);
+        space_id = region_obj->region.space_id;
+
+        /* Setup defaults */
+
+        region_obj->region.handler = NULL;
+        region_obj2->extra.method_REG = NULL;
+        region_obj->common.flags &= ~(AOPOBJ_SETUP_COMPLETE);
+        region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED;
+
+        /* Find any "_REG" method associated with this region definition */
+
+        status = acpi_ns_search_node (*reg_name_ptr, node,
+                          ACPI_TYPE_METHOD, &method_node);
+        if (ACPI_SUCCESS (status)) {
+                /*
+                 * The _REG method is optional and there can be only one per region
+                 * definition.  This will be executed when the handler is attached
+                 * or removed
+                 */
+                region_obj2->extra.method_REG = method_node;
+        }
+
+        /*
+         * The following loop depends upon the root Node having no parent
+         * ie: acpi_gbl_root_node->parent_entry being set to NULL
+         */
+        while (node) {
+                /* Check to see if a handler exists */
+
+                handler_obj = NULL;
+                obj_desc = acpi_ns_get_attached_object (node);
+                if (obj_desc) {
+                        /* Can only be a handler if the object exists */
+
+                        switch (node->type) {
+                        case ACPI_TYPE_DEVICE:
+
+                                handler_obj = obj_desc->device.handler;
+                                break;
+
+                        case ACPI_TYPE_PROCESSOR:
+
+                                handler_obj = obj_desc->processor.handler;
+                                break;
+
+                        case ACPI_TYPE_THERMAL:
+
+                                handler_obj = obj_desc->thermal_zone.handler;
+                                break;
+
+                        default:
+                                /* Ignore other objects */
+                                break;
+                        }
+
+                        while (handler_obj) {
+                                /* Is this handler of the correct type? */
+
+                                if (handler_obj->address_space.space_id == space_id) {
+                                        /* Found correct handler */
+
+                                        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
+                                                "Found handler %p for region %p in obj %p\n",
+                                                handler_obj, region_obj, obj_desc));
+
+                                        status = acpi_ev_attach_region (handler_obj, region_obj,
+                                                         acpi_ns_locked);
+
+                                        /*
+                                         * Tell all users that this region is usable by running the _REG
+                                         * method
+                                         */
+                                        if (acpi_ns_locked) {
+                                                status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+                                                if (ACPI_FAILURE (status)) {
+                                                        return_ACPI_STATUS (status);
+                                                }
+                                        }
+
+                                        status = acpi_ev_execute_reg_method (region_obj, 1);
+
+                                        if (acpi_ns_locked) {
+                                                status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+                                                if (ACPI_FAILURE (status)) {
+                                                        return_ACPI_STATUS (status);
+                                                }
+                                        }
+
+                                        return_ACPI_STATUS (AE_OK);
+                                }
+
+                                /* Try next handler in the list */
+
+                                handler_obj = handler_obj->address_space.next;
+                        }
+                }
+
+                /*
+                 * This node does not have the handler we need;
+                 * Pop up one level
+                 */
+                node = acpi_ns_get_parent_node (node);
+        }
+
+        /* If we get here, there is no handler for this region */
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
+                "No handler for region_type %s(%X) (region_obj %p)\n",
+                acpi_ut_get_region_name (space_id), space_id, region_obj));
+
+        return_ACPI_STATUS (AE_NOT_EXIST);
+}
+