diff options
Diffstat (limited to 'drivers/acpi/namespace/nsxfeval.c')
| -rw-r--r-- | drivers/acpi/namespace/nsxfeval.c | 430 |
1 files changed, 196 insertions, 234 deletions
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c index 12ea202257fa..c07b046659ff 100644 --- a/drivers/acpi/namespace/nsxfeval.c +++ b/drivers/acpi/namespace/nsxfeval.c @@ -48,10 +48,8 @@ #include <acpi/acnamesp.h> #include <acpi/acinterp.h> - #define _COMPONENT ACPI_NAMESPACE - ACPI_MODULE_NAME ("nsxfeval") - +ACPI_MODULE_NAME("nsxfeval") /******************************************************************************* * @@ -73,27 +71,23 @@ * be valid (non-null) * ******************************************************************************/ - #ifdef ACPI_FUTURE_USAGE acpi_status -acpi_evaluate_object_typed ( - acpi_handle handle, - acpi_string pathname, - struct acpi_object_list *external_params, - struct acpi_buffer *return_buffer, - acpi_object_type return_type) +acpi_evaluate_object_typed(acpi_handle handle, + acpi_string pathname, + struct acpi_object_list *external_params, + struct acpi_buffer *return_buffer, + acpi_object_type return_type) { - acpi_status status; - u8 must_free = FALSE; - - - ACPI_FUNCTION_TRACE ("acpi_evaluate_object_typed"); + acpi_status status; + u8 must_free = FALSE; + ACPI_FUNCTION_TRACE("acpi_evaluate_object_typed"); /* Return buffer must be valid */ if (!return_buffer) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } if (return_buffer->length == ACPI_ALLOCATE_BUFFER) { @@ -102,51 +96,52 @@ acpi_evaluate_object_typed ( /* Evaluate the object */ - status = acpi_evaluate_object (handle, pathname, external_params, return_buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_evaluate_object(handle, pathname, external_params, + return_buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Type ANY means "don't care" */ if (return_type == ACPI_TYPE_ANY) { - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } if (return_buffer->length == 0) { /* Error because caller specifically asked for a return value */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "No return value\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "No return value\n")); - return_ACPI_STATUS (AE_NULL_OBJECT); + return_ACPI_STATUS(AE_NULL_OBJECT); } /* Examine the object type returned from evaluate_object */ - if (((union acpi_object *) return_buffer->pointer)->type == return_type) { - return_ACPI_STATUS (AE_OK); + if (((union acpi_object *)return_buffer->pointer)->type == return_type) { + return_ACPI_STATUS(AE_OK); } /* Return object type does not match requested type */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Incorrect return type [%s] requested [%s]\n", - acpi_ut_get_type_name (((union acpi_object *) return_buffer->pointer)->type), - acpi_ut_get_type_name (return_type))); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Incorrect return type [%s] requested [%s]\n", + acpi_ut_get_type_name(((union acpi_object *) + return_buffer->pointer)->type), + acpi_ut_get_type_name(return_type))); if (must_free) { /* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */ - acpi_os_free (return_buffer->pointer); + acpi_os_free(return_buffer->pointer); return_buffer->pointer = NULL; } return_buffer->length = 0; - return_ACPI_STATUS (AE_TYPE); + return_ACPI_STATUS(AE_TYPE); } -#endif /* ACPI_FUTURE_USAGE */ - +#endif /* ACPI_FUTURE_USAGE */ /******************************************************************************* * @@ -169,21 +164,18 @@ acpi_evaluate_object_typed ( ******************************************************************************/ acpi_status -acpi_evaluate_object ( - acpi_handle handle, - acpi_string pathname, - struct acpi_object_list *external_params, - struct acpi_buffer *return_buffer) +acpi_evaluate_object(acpi_handle handle, + acpi_string pathname, + struct acpi_object_list *external_params, + struct acpi_buffer *return_buffer) { - acpi_status status; - acpi_status status2; - struct acpi_parameter_info info; - acpi_size buffer_space_needed; - u32 i; - - - ACPI_FUNCTION_TRACE ("acpi_evaluate_object"); + acpi_status status; + acpi_status status2; + struct acpi_parameter_info info; + acpi_size buffer_space_needed; + u32 i; + ACPI_FUNCTION_TRACE("acpi_evaluate_object"); info.node = handle; info.parameters = NULL; @@ -200,11 +192,11 @@ acpi_evaluate_object ( * Allocate a new parameter block for the internal objects * Add 1 to count to allow for null terminated internal list */ - info.parameters = ACPI_MEM_CALLOCATE ( - ((acpi_size) external_params->count + 1) * - sizeof (void *)); + info.parameters = ACPI_MEM_CALLOCATE(((acpi_size) + external_params->count + + 1) * sizeof(void *)); if (!info.parameters) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* @@ -212,48 +204,47 @@ acpi_evaluate_object ( * internal object */ for (i = 0; i < external_params->count; i++) { - status = acpi_ut_copy_eobject_to_iobject (&external_params->pointer[i], - &info.parameters[i]); - if (ACPI_FAILURE (status)) { - acpi_ut_delete_internal_object_list (info.parameters); - return_ACPI_STATUS (status); + status = + acpi_ut_copy_eobject_to_iobject(&external_params-> + pointer[i], + &info. + parameters[i]); + if (ACPI_FAILURE(status)) { + acpi_ut_delete_internal_object_list(info. + parameters); + return_ACPI_STATUS(status); } } info.parameters[external_params->count] = NULL; } - /* * Three major cases: * 1) Fully qualified pathname * 2) No handle, not fully qualified pathname (error) * 3) Valid handle */ - if ((pathname) && - (acpi_ns_valid_root_prefix (pathname[0]))) { + if ((pathname) && (acpi_ns_valid_root_prefix(pathname[0]))) { /* * The path is fully qualified, just evaluate by name */ - status = acpi_ns_evaluate_by_name (pathname, &info); - } - else if (!handle) { + status = acpi_ns_evaluate_by_name(pathname, &info); + } else if (!handle) { /* * A handle is optional iff a fully qualified pathname * is specified. Since we've already handled fully * qualified names above, this is an error */ if (!pathname) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Both Handle and Pathname are NULL\n")); - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Handle is NULL and Pathname is relative\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Both Handle and Pathname are NULL\n")); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Handle is NULL and Pathname is relative\n")); } status = AE_BAD_PARAMETER; - } - else { + } else { /* * We get here if we have a handle -- and if we have a * pathname it is relative. The handle will be validated @@ -264,17 +255,15 @@ acpi_evaluate_object ( * The null pathname case means the handle is for * the actual object to be evaluated */ - status = acpi_ns_evaluate_by_handle (&info); - } - else { - /* - * Both a Handle and a relative Pathname - */ - status = acpi_ns_evaluate_relative (pathname, &info); + status = acpi_ns_evaluate_by_handle(&info); + } else { + /* + * Both a Handle and a relative Pathname + */ + status = acpi_ns_evaluate_relative(pathname, &info); } } - /* * If we are expecting a return value, and all went well above, * copy the return value to an external object. @@ -282,9 +271,9 @@ acpi_evaluate_object ( if (return_buffer) { if (!info.return_object) { return_buffer->length = 0; - } - else { - if (ACPI_GET_DESCRIPTOR_TYPE (info.return_object) == ACPI_DESC_TYPE_NAMED) { + } else { + if (ACPI_GET_DESCRIPTOR_TYPE(info.return_object) == + ACPI_DESC_TYPE_NAMED) { /* * If we received a NS Node as a return object, this means that * the object we are evaluating has nothing interesting to @@ -294,37 +283,43 @@ acpi_evaluate_object ( * support for various types at a later date if necessary. */ status = AE_TYPE; - info.return_object = NULL; /* No need to delete a NS Node */ + info.return_object = NULL; /* No need to delete a NS Node */ return_buffer->length = 0; } - if (ACPI_SUCCESS (status)) { + if (ACPI_SUCCESS(status)) { /* * Find out how large a buffer is needed * to contain the returned object */ - status = acpi_ut_get_object_size (info.return_object, - &buffer_space_needed); - if (ACPI_SUCCESS (status)) { + status = + acpi_ut_get_object_size(info.return_object, + &buffer_space_needed); + if (ACPI_SUCCESS(status)) { /* Validate/Allocate/Clear caller buffer */ - status = acpi_ut_initialize_buffer (return_buffer, - buffer_space_needed); - if (ACPI_FAILURE (status)) { + status = + acpi_ut_initialize_buffer + (return_buffer, + buffer_space_needed); + if (ACPI_FAILURE(status)) { /* * Caller's buffer is too small or a new one can't be allocated */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Needed buffer size %X, %s\n", - (u32) buffer_space_needed, - acpi_format_exception (status))); - } - else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Needed buffer size %X, %s\n", + (u32) + buffer_space_needed, + acpi_format_exception + (status))); + } else { /* * We have enough space for the object, build it */ - status = acpi_ut_copy_iobject_to_eobject (info.return_object, - return_buffer); + status = + acpi_ut_copy_iobject_to_eobject + (info.return_object, + return_buffer); } } } @@ -336,14 +331,14 @@ acpi_evaluate_object ( * Delete the internal return object. NOTE: Interpreter * must be locked to avoid race condition. */ - status2 = acpi_ex_enter_interpreter (); - if (ACPI_SUCCESS (status2)) { + status2 = acpi_ex_enter_interpreter(); + if (ACPI_SUCCESS(status2)) { /* * Delete the internal return object. (Or at least * decrement the reference count by one) */ - acpi_ut_remove_reference (info.return_object); - acpi_ex_exit_interpreter (); + acpi_ut_remove_reference(info.return_object); + acpi_ex_exit_interpreter(); } } @@ -353,13 +348,13 @@ acpi_evaluate_object ( if (info.parameters) { /* Free the allocated parameter block */ - acpi_ut_delete_internal_object_list (info.parameters); + acpi_ut_delete_internal_object_list(info.parameters); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_evaluate_object); +EXPORT_SYMBOL(acpi_evaluate_object); /******************************************************************************* * @@ -392,26 +387,20 @@ EXPORT_SYMBOL(acpi_evaluate_object); ******************************************************************************/ acpi_status -acpi_walk_namespace ( - acpi_object_type type, - acpi_handle start_object, - u32 max_depth, - acpi_walk_callback user_function, - void *context, - void **return_value) +acpi_walk_namespace(acpi_object_type type, + acpi_handle start_object, + u32 max_depth, + acpi_walk_callback user_function, + void *context, void **return_value) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_walk_namespace"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_walk_namespace"); /* Parameter validation */ - if ((type > ACPI_TYPE_EXTERNAL_MAX) || - (!max_depth) || - (!user_function)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((type > ACPI_TYPE_EXTERNAL_MAX) || (!max_depth) || (!user_function)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* @@ -420,20 +409,20 @@ acpi_walk_namespace ( * to the user function - since this function * must be allowed to make Acpi calls itself. */ - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ns_walk_namespace (type, start_object, max_depth, - ACPI_NS_WALK_UNLOCK, - user_function, context, return_value); + status = acpi_ns_walk_namespace(type, start_object, max_depth, + ACPI_NS_WALK_UNLOCK, + user_function, context, return_value); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_walk_namespace); +EXPORT_SYMBOL(acpi_walk_namespace); /******************************************************************************* * @@ -450,29 +439,26 @@ EXPORT_SYMBOL(acpi_walk_namespace); ******************************************************************************/ static acpi_status -acpi_ns_get_device_callback ( - acpi_handle obj_handle, - u32 nesting_level, - void *context, - void **return_value) +acpi_ns_get_device_callback(acpi_handle obj_handle, + u32 nesting_level, + void *context, void **return_value) { - struct acpi_get_devices_info *info = context; - acpi_status status; - struct acpi_namespace_node *node; - u32 flags; - struct acpi_device_id hid; + struct acpi_get_devices_info *info = context; + acpi_status status; + struct acpi_namespace_node *node; + u32 flags; + struct acpi_device_id hid; struct acpi_compatible_id_list *cid; - acpi_native_uint i; - + acpi_native_uint i; - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return (status); } - node = acpi_ns_map_handle_to_node (obj_handle); - status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + node = acpi_ns_map_handle_to_node(obj_handle); + status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return (status); } @@ -482,8 +468,8 @@ acpi_ns_get_device_callback ( /* Run _STA to determine if device is present */ - status = acpi_ut_execute_STA (node, &flags); - if (ACPI_FAILURE (status)) { + status = acpi_ut_execute_STA(node, &flags); + if (ACPI_FAILURE(status)) { return (AE_CTRL_DEPTH); } @@ -496,44 +482,43 @@ acpi_ns_get_device_callback ( /* Filter based on device HID & CID */ if (info->hid != NULL) { - status = acpi_ut_execute_HID (node, &hid); + status = acpi_ut_execute_HID(node, &hid); if (status == AE_NOT_FOUND) { return (AE_OK); - } - else if (ACPI_FAILURE (status)) { + } else if (ACPI_FAILURE(status)) { return (AE_CTRL_DEPTH); } - if (ACPI_STRNCMP (hid.value, info->hid, sizeof (hid.value)) != 0) { + if (ACPI_STRNCMP(hid.value, info->hid, sizeof(hid.value)) != 0) { /* Get the list of Compatible IDs */ - status = acpi_ut_execute_CID (node, &cid); + status = acpi_ut_execute_CID(node, &cid); if (status == AE_NOT_FOUND) { return (AE_OK); - } - else if (ACPI_FAILURE (status)) { + } else if (ACPI_FAILURE(status)) { return (AE_CTRL_DEPTH); } /* Walk the CID list */ for (i = 0; i < cid->count; i++) { - if (ACPI_STRNCMP (cid->id[i].value, info->hid, - sizeof (struct acpi_compatible_id)) != 0) { - ACPI_MEM_FREE (cid); + if (ACPI_STRNCMP(cid->id[i].value, info->hid, + sizeof(struct + acpi_compatible_id)) != + 0) { + ACPI_MEM_FREE(cid); return (AE_OK); } } - ACPI_MEM_FREE (cid); + ACPI_MEM_FREE(cid); } } - status = info->user_function (obj_handle, nesting_level, info->context, - return_value); + status = info->user_function(obj_handle, nesting_level, info->context, + return_value); return (status); } - /******************************************************************************* * * FUNCTION: acpi_get_devices @@ -560,32 +545,28 @@ acpi_ns_get_device_callback ( ******************************************************************************/ acpi_status -acpi_get_devices ( - char *HID, - acpi_walk_callback user_function, - void *context, - void **return_value) +acpi_get_devices(char *HID, + acpi_walk_callback user_function, + void *context, void **return_value) { - acpi_status status; - struct acpi_get_devices_info info; - - - ACPI_FUNCTION_TRACE ("acpi_get_devices"); + acpi_status status; + struct acpi_get_devices_info info; + ACPI_FUNCTION_TRACE("acpi_get_devices"); /* Parameter validation */ if (!user_function) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* * We're going to call their callback from OUR callback, so we need * to know what it is, and their context parameter. */ - info.context = context; + info.context = context; info.user_function = user_function; - info.hid = HID; + info.hid = HID; /* * Lock the namespace around the walk. @@ -593,22 +574,22 @@ acpi_get_devices ( * to the user function - since this function * must be allowed to make Acpi calls itself. */ - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ns_walk_namespace (ACPI_TYPE_DEVICE, - ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - ACPI_NS_WALK_UNLOCK, - acpi_ns_get_device_callback, &info, - return_value); + status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, + ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, + ACPI_NS_WALK_UNLOCK, + acpi_ns_get_device_callback, &info, + return_value); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_get_devices); +EXPORT_SYMBOL(acpi_get_devices); /******************************************************************************* * @@ -625,44 +606,38 @@ EXPORT_SYMBOL(acpi_get_devices); ******************************************************************************/ acpi_status -acpi_attach_data ( - acpi_handle obj_handle, - acpi_object_handler handler, - void *data) +acpi_attach_data(acpi_handle obj_handle, + acpi_object_handler handler, void *data) { - struct acpi_namespace_node *node; - acpi_status status; - + struct acpi_namespace_node *node; + acpi_status status; /* Parameter validation */ - if (!obj_handle || - !handler || - !data) { + if (!obj_handle || !handler || !data) { return (AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return (status); } /* Convert and validate the handle */ - node = acpi_ns_map_handle_to_node (obj_handle); + node = acpi_ns_map_handle_to_node(obj_handle); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } - status = acpi_ns_attach_data (node, handler, data); + status = acpi_ns_attach_data(node, handler, data); -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return (status); } - /******************************************************************************* * * FUNCTION: acpi_detach_data @@ -677,42 +652,37 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_detach_data ( - acpi_handle obj_handle, - acpi_object_handler handler) +acpi_detach_data(acpi_handle obj_handle, acpi_object_handler handler) { - struct acpi_namespace_node *node; - acpi_status status; - + struct acpi_namespace_node *node; + acpi_status status; /* Parameter validation */ - if (!obj_handle || - !handler) { + if (!obj_handle || !handler) { return (AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return (status); } /* Convert and validate the handle */ - node = acpi_ns_map_handle_to_node (obj_handle); + node = acpi_ns_map_handle_to_node(obj_handle); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } - status = acpi_ns_detach_data (node, handler); + status = acpi_ns_detach_data(node, handler); -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return (status); } - /******************************************************************************* * * FUNCTION: acpi_get_data @@ -728,41 +698,33 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_get_data ( - acpi_handle obj_handle, - acpi_object_handler handler, - void **data) +acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data) { - struct acpi_namespace_node *node; - acpi_status status; - + struct acpi_namespace_node *node; + acpi_status status; /* Parameter validation */ - if (!obj_handle || - !handler || - !data) { + if (!obj_handle || !handler || !data) { return (AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return (status); } /* Convert and validate the handle */ - node = acpi_ns_map_handle_to_node (obj_handle); + node = acpi_ns_map_handle_to_node(obj_handle); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } - status = acpi_ns_get_attached_data (node, handler, data); + status = acpi_ns_get_attached_data(node, handler, data); -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return (status); } - - |