X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fevents%2Fevregion.c;h=21caae04fe85f868bcedddfc3e8ebc6a5b2f5c68;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=772342708a7afb1141b60b418df238e25b01a0dd;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c index 772342708..21caae04f 100644 --- a/drivers/acpi/events/evregion.c +++ b/drivers/acpi/events/evregion.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2005, R. Byron Moore + * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -41,23 +41,30 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include #include #include #include #define _COMPONENT ACPI_EVENTS - ACPI_MODULE_NAME ("evregion") - +ACPI_MODULE_NAME("evregion") #define ACPI_NUM_DEFAULT_SPACES 4 +static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = { + ACPI_ADR_SPACE_SYSTEM_MEMORY, + ACPI_ADR_SPACE_SYSTEM_IO, + ACPI_ADR_SPACE_PCI_CONFIG, + ACPI_ADR_SPACE_DATA_TABLE +}; + +/* Local prototypes */ -static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = { - ACPI_ADR_SPACE_SYSTEM_MEMORY, - ACPI_ADR_SPACE_SYSTEM_IO, - ACPI_ADR_SPACE_PCI_CONFIG, - ACPI_ADR_SPACE_DATA_TABLE}; +static acpi_status +acpi_ev_reg_run(acpi_handle obj_handle, + u32 level, void *context, void **return_value); +static acpi_status +acpi_ev_install_handler(acpi_handle obj_handle, + u32 level, void *context, void **return_value); /******************************************************************************* * @@ -71,19 +78,16 @@ static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPA * ******************************************************************************/ -acpi_status -acpi_ev_install_region_handlers ( - void) { - acpi_status status; - acpi_native_uint i; - - - ACPI_FUNCTION_TRACE ("ev_install_region_handlers"); +acpi_status acpi_ev_install_region_handlers(void) +{ + acpi_status status; + acpi_native_uint i; + ACPI_FUNCTION_TRACE(ev_install_region_handlers); - 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); } /* @@ -105,9 +109,11 @@ acpi_ev_install_region_handlers ( * Similar for AE_SAME_HANDLER. */ for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) { - status = acpi_ev_install_space_handler (acpi_gbl_root_node, - acpi_gbl_default_address_spaces[i], - ACPI_DEFAULT_HANDLER, NULL, NULL); + status = acpi_ev_install_space_handler(acpi_gbl_root_node, + acpi_gbl_default_address_spaces + [i], + ACPI_DEFAULT_HANDLER, + NULL, NULL); switch (status) { case AE_OK: case AE_SAME_HANDLER: @@ -124,12 +130,11 @@ acpi_ev_install_region_handlers ( } } -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_initialize_op_regions @@ -143,44 +148,41 @@ unlock_and_exit: * ******************************************************************************/ -acpi_status -acpi_ev_initialize_op_regions ( - void) +acpi_status acpi_ev_initialize_op_regions(void) { - acpi_status status; - acpi_native_uint i; + acpi_status status; + acpi_native_uint i; + ACPI_FUNCTION_TRACE(ev_initialize_op_regions); - ACPI_FUNCTION_TRACE ("ev_initialize_op_regions"); - - - 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); } /* * Run the _REG methods for op_regions in each default address space */ for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) { + /* TBD: Make sure handler is the DEFAULT handler, otherwise * _REG will have already been run. */ - status = acpi_ev_execute_reg_methods (acpi_gbl_root_node, - acpi_gbl_default_address_spaces[i]); + status = acpi_ev_execute_reg_methods(acpi_gbl_root_node, + acpi_gbl_default_address_spaces + [i]); } - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_execute_reg_method * - * PARAMETERS: region_obj - Object structure - * Function - Passed to _REG: On (1) or Off (0) + * PARAMETERS: region_obj - Region object + * Function - Passed to _REG: On (1) or Off (0) * * RETURN: Status * @@ -189,74 +191,81 @@ acpi_ev_initialize_op_regions ( ******************************************************************************/ acpi_status -acpi_ev_execute_reg_method ( - union acpi_operand_object *region_obj, - u32 function) +acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function) { - struct acpi_parameter_info info; - union acpi_operand_object *params[3]; - union acpi_operand_object *region_obj2; - acpi_status status; + struct acpi_evaluate_info *info; + union acpi_operand_object *args[3]; + union acpi_operand_object *region_obj2; + acpi_status status; + ACPI_FUNCTION_TRACE(ev_execute_reg_method); - ACPI_FUNCTION_TRACE ("ev_execute_reg_method"); - - - region_obj2 = acpi_ns_get_secondary_object (region_obj); + region_obj2 = acpi_ns_get_secondary_object(region_obj); if (!region_obj2) { - return_ACPI_STATUS (AE_NOT_EXIST); + return_ACPI_STATUS(AE_NOT_EXIST); } if (region_obj2->extra.method_REG == NULL) { - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } + /* Allocate and initialize the evaluation information block */ + + info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); + if (!info) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + info->prefix_node = region_obj2->extra.method_REG; + info->pathname = NULL; + info->parameters = args; + info->parameter_type = ACPI_PARAM_ARGS; + info->flags = ACPI_IGNORE_RETURN_VALUE; + /* * The _REG method has two arguments: * - * Arg0, Integer: Operation region space ID - * Same value as region_obj->Region.space_id - * Arg1, Integer: connection status - * 1 for connecting the handler, - * 0 for disconnecting the handler - * Passed as a parameter + * Arg0 - Integer: + * Operation region space ID Same value as region_obj->Region.space_id + * + * Arg1 - Integer: + * connection status 1 for connecting the handler, 0 for disconnecting + * the handler (Passed as a parameter) */ - params[0] = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); - if (!params[0]) { - return_ACPI_STATUS (AE_NO_MEMORY); + args[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + if (!args[0]) { + status = AE_NO_MEMORY; + goto cleanup1; } - params[1] = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); - if (!params[1]) { + args[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + if (!args[1]) { status = AE_NO_MEMORY; - goto cleanup; + goto cleanup2; } /* Setup the parameter objects */ - params[0]->integer.value = region_obj->region.space_id; - params[1]->integer.value = function; - params[2] = NULL; - - info.node = region_obj2->extra.method_REG; - info.parameters = params; - info.parameter_type = ACPI_PARAM_ARGS; + args[0]->integer.value = region_obj->region.space_id; + args[1]->integer.value = function; + args[2] = NULL; /* Execute the method, no return value */ - ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname ( - ACPI_TYPE_METHOD, info.node, NULL)); - status = acpi_ns_evaluate_by_handle (&info); + ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname + (ACPI_TYPE_METHOD, info->prefix_node, NULL)); - acpi_ut_remove_reference (params[1]); + status = acpi_ns_evaluate(info); + acpi_ut_remove_reference(args[1]); -cleanup: - acpi_ut_remove_reference (params[0]); + cleanup2: + acpi_ut_remove_reference(args[0]); - return_ACPI_STATUS (status); + cleanup1: + ACPI_FREE(info); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_address_space_dispatch @@ -265,7 +274,8 @@ cleanup: * Function - Read or Write operation * Address - Where in the space to read or write * bit_width - Field width in bits (8, 16, 32, or 64) - * Value - Pointer to in or out value + * Value - Pointer to in or out value, must be + * full 64-bit acpi_integer * * RETURN: Status * @@ -275,40 +285,38 @@ cleanup: ******************************************************************************/ acpi_status -acpi_ev_address_space_dispatch ( - union acpi_operand_object *region_obj, - u32 function, - acpi_physical_address address, - u32 bit_width, - void *value) +acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, + u32 function, + acpi_physical_address address, + u32 bit_width, acpi_integer * value) { - acpi_status status; - acpi_status status2; - acpi_adr_space_handler handler; - acpi_adr_space_setup region_setup; - union acpi_operand_object *handler_desc; - union acpi_operand_object *region_obj2; - void *region_context = NULL; - - - ACPI_FUNCTION_TRACE ("ev_address_space_dispatch"); + acpi_status status; + acpi_status status2; + acpi_adr_space_handler handler; + acpi_adr_space_setup region_setup; + union acpi_operand_object *handler_desc; + union acpi_operand_object *region_obj2; + void *region_context = NULL; + ACPI_FUNCTION_TRACE(ev_address_space_dispatch); - region_obj2 = acpi_ns_get_secondary_object (region_obj); + region_obj2 = acpi_ns_get_secondary_object(region_obj); if (!region_obj2) { - return_ACPI_STATUS (AE_NOT_EXIST); + return_ACPI_STATUS(AE_NOT_EXIST); } /* Ensure that there is a handler associated with this region */ handler_desc = region_obj->region.handler; if (!handler_desc) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "No handler for Region [%4.4s] (%p) [%s]\n", - acpi_ut_get_node_name (region_obj->region.node), - region_obj, acpi_ut_get_region_name (region_obj->region.space_id))); - - return_ACPI_STATUS (AE_NOT_EXIST); + ACPI_ERROR((AE_INFO, + "No handler for Region [%4.4s] (%p) [%s]", + acpi_ut_get_node_name(region_obj->region.node), + region_obj, + acpi_ut_get_region_name(region_obj->region. + space_id))); + + return_ACPI_STATUS(AE_NOT_EXIST); } /* @@ -321,36 +329,44 @@ acpi_ev_address_space_dispatch ( */ region_setup = handler_desc->address_space.setup; if (!region_setup) { + /* No initialization routine, exit with error */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No init routine for region(%p) [%s]\n", - region_obj, acpi_ut_get_region_name (region_obj->region.space_id))); - return_ACPI_STATUS (AE_NOT_EXIST); + ACPI_ERROR((AE_INFO, + "No init routine for region(%p) [%s]", + region_obj, + acpi_ut_get_region_name(region_obj->region. + space_id))); + return_ACPI_STATUS(AE_NOT_EXIST); } /* - * We must exit the interpreter because the region setup will potentially - * execute control methods (e.g., _REG method for this region) + * We must exit the interpreter because the region + * setup will potentially execute control methods + * (e.g., _REG method for this region) */ - acpi_ex_exit_interpreter (); + acpi_ex_exit_interpreter(); - status = region_setup (region_obj, ACPI_REGION_ACTIVATE, - handler_desc->address_space.context, ®ion_context); + status = region_setup(region_obj, ACPI_REGION_ACTIVATE, + handler_desc->address_space.context, + ®ion_context); /* Re-enter the interpreter */ - status2 = acpi_ex_enter_interpreter (); - if (ACPI_FAILURE (status2)) { - return_ACPI_STATUS (status2); + status2 = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status2)) { + return_ACPI_STATUS(status2); } /* Check for failure of the Region Setup */ - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region Init: %s [%s]\n", - acpi_format_exception (status), - acpi_ut_get_region_name (region_obj->region.space_id))); - return_ACPI_STATUS (status); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "During region initialization: [%s]", + acpi_ut_get_region_name(region_obj-> + region. + space_id))); + return_ACPI_STATUS(status); } /* @@ -360,16 +376,17 @@ acpi_ev_address_space_dispatch ( region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE; if (region_obj2->extra.region_context) { + /* The handler for this region was already installed */ - ACPI_MEM_FREE (region_context); - } - else { + ACPI_FREE(region_context); + } else { /* * Save the returned context for use in all accesses to * this particular region */ - region_obj2->extra.region_context = region_context; + region_obj2->extra.region_context = + region_context; } } } @@ -378,13 +395,15 @@ acpi_ev_address_space_dispatch ( handler = handler_desc->address_space.handler; - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", - ®ion_obj->region.handler->address_space, handler, - ACPI_FORMAT_UINT64 (address), - acpi_ut_get_region_name (region_obj->region.space_id))); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", + ®ion_obj->region.handler->address_space, handler, + ACPI_FORMAT_UINT64(address), + acpi_ut_get_region_name(region_obj->region. + space_id))); - if (!(handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { + if (!(handler_desc->address_space.handler_flags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * For handlers other than the default (supplied) handlers, we must * exit the interpreter because the handler *might* block -- we don't @@ -395,31 +414,31 @@ acpi_ev_address_space_dispatch ( /* Call the handler */ - status = handler (function, address, bit_width, value, + status = handler(function, address, bit_width, value, handler_desc->address_space.context, region_obj2->extra.region_context); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("Handler for [%s] returned %s\n", - acpi_ut_get_region_name (region_obj->region.space_id), - acpi_format_exception (status))); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]", + acpi_ut_get_region_name(region_obj->region. + space_id))); } - if (!(handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { + if (!(handler_desc->address_space.handler_flags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * We just returned from a non-default handler, we must re-enter the * interpreter */ - status2 = acpi_ex_enter_interpreter (); - if (ACPI_FAILURE (status2)) { - return_ACPI_STATUS (status2); + status2 = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status2)) { + return_ACPI_STATUS(status2); } } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_detach_region @@ -435,23 +454,20 @@ acpi_ev_address_space_dispatch ( ******************************************************************************/ void -acpi_ev_detach_region( - union acpi_operand_object *region_obj, - u8 acpi_ns_is_locked) +acpi_ev_detach_region(union acpi_operand_object *region_obj, + u8 acpi_ns_is_locked) { - union acpi_operand_object *handler_obj; - union acpi_operand_object *obj_desc; - union acpi_operand_object **last_obj_ptr; - acpi_adr_space_setup region_setup; - void **region_context; - union acpi_operand_object *region_obj2; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ev_detach_region"); + union acpi_operand_object *handler_obj; + union acpi_operand_object *obj_desc; + union acpi_operand_object **last_obj_ptr; + acpi_adr_space_setup region_setup; + void **region_context; + union acpi_operand_object *region_obj2; + acpi_status status; + ACPI_FUNCTION_TRACE(ev_detach_region); - region_obj2 = acpi_ns_get_secondary_object (region_obj); + region_obj2 = acpi_ns_get_secondary_object(region_obj); if (!region_obj2) { return_VOID; } @@ -461,6 +477,7 @@ acpi_ev_detach_region( handler_obj = region_obj->region.handler; if (!handler_obj) { + /* This region has no handler, all done */ return_VOID; @@ -472,69 +489,82 @@ acpi_ev_detach_region( last_obj_ptr = &handler_obj->address_space.region_list; while (obj_desc) { + /* Is this the correct Region? */ if (obj_desc == region_obj) { - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Removing Region %p from address handler %p\n", - region_obj, handler_obj)); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Removing Region %p from address handler %p\n", + region_obj, handler_obj)); /* This is it, remove it from the handler's list */ *last_obj_ptr = obj_desc->region.next; - obj_desc->region.next = NULL; /* Must clear field */ + obj_desc->region.next = NULL; /* Must clear field */ if (acpi_ns_is_locked) { - status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = + acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { return_VOID; } } /* Now stop region accesses by executing the _REG method */ - status = acpi_ev_execute_reg_method (region_obj, 0); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region _REG, [%s]\n", - acpi_format_exception (status), - acpi_ut_get_region_name (region_obj->region.space_id))); + status = acpi_ev_execute_reg_method(region_obj, 0); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "from region _REG, [%s]", + acpi_ut_get_region_name + (region_obj->region.space_id))); } if (acpi_ns_is_locked) { - 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_VOID; } } - /* Call the setup handler with the deactivate notification */ - - region_setup = handler_obj->address_space.setup; - status = region_setup (region_obj, ACPI_REGION_DEACTIVATE, - handler_obj->address_space.context, region_context); - - /* Init routine may fail, Just ignore errors */ + /* + * If the region has been activated, call the setup handler + * with the deactivate notification + */ + if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) { + region_setup = handler_obj->address_space.setup; + status = + region_setup(region_obj, + ACPI_REGION_DEACTIVATE, + handler_obj->address_space. + context, region_context); + + /* Init routine may fail, Just ignore errors */ + + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "from region handler - deactivate, [%s]", + acpi_ut_get_region_name + (region_obj->region. + space_id))); + } - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region init, [%s]\n", - acpi_format_exception (status), - acpi_ut_get_region_name (region_obj->region.space_id))); + region_obj->region.flags &= + ~(AOPOBJ_SETUP_COMPLETE); } - region_obj->region.flags &= ~(AOPOBJ_SETUP_COMPLETE); - /* * Remove handler reference in the region * - * NOTE: this doesn't mean that the region goes away - * The region is just inaccessible as indicated to - * the _REG method + * NOTE: this doesn't mean that the region goes away, the region + * is just inaccessible as indicated to the _REG method * - * If the region is on the handler's list - * this better be the region's handler + * If the region is on the handler's list, this must be the + * region's handler */ region_obj->region.handler = NULL; - acpi_ut_remove_reference (handler_obj); + acpi_ut_remove_reference(handler_obj); return_VOID; } @@ -547,14 +577,13 @@ acpi_ev_detach_region( /* If we get here, the region was not in the handler's region list */ - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Cannot remove region %p from address handler %p\n", - region_obj, handler_obj)); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Cannot remove region %p from address handler %p\n", + region_obj, handler_obj)); return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ev_attach_region @@ -571,20 +600,19 @@ acpi_ev_detach_region( ******************************************************************************/ acpi_status -acpi_ev_attach_region ( - union acpi_operand_object *handler_obj, - union acpi_operand_object *region_obj, - u8 acpi_ns_is_locked) +acpi_ev_attach_region(union acpi_operand_object *handler_obj, + union acpi_operand_object *region_obj, + u8 acpi_ns_is_locked) { - ACPI_FUNCTION_TRACE ("ev_attach_region"); + ACPI_FUNCTION_TRACE(ev_attach_region); - - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Adding Region [%4.4s] %p to address handler %p [%s]\n", - acpi_ut_get_node_name (region_obj->region.node), - region_obj, handler_obj, - acpi_ut_get_region_name (region_obj->region.space_id))); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Adding Region [%4.4s] %p to address handler %p [%s]\n", + acpi_ut_get_node_name(region_obj->region.node), + region_obj, handler_obj, + acpi_ut_get_region_name(region_obj->region. + space_id))); /* Link this region to the front of the handler's list */ @@ -594,16 +622,15 @@ acpi_ev_attach_region ( /* Install the region's handler */ if (region_obj->region.handler) { - return_ACPI_STATUS (AE_ALREADY_EXISTS); + return_ACPI_STATUS(AE_ALREADY_EXISTS); } region_obj->region.handler = handler_obj; - acpi_ut_add_reference (handler_obj); + acpi_ut_add_reference(handler_obj); - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_ev_install_handler @@ -621,24 +648,19 @@ acpi_ev_attach_region ( * ******************************************************************************/ -acpi_status -acpi_ev_install_handler ( - acpi_handle obj_handle, - u32 level, - void *context, - void **return_value) +static acpi_status +acpi_ev_install_handler(acpi_handle obj_handle, + u32 level, void *context, void **return_value) { - union acpi_operand_object *handler_obj; - union acpi_operand_object *next_handler_obj; - union acpi_operand_object *obj_desc; - struct acpi_namespace_node *node; - acpi_status status; - + union acpi_operand_object *handler_obj; + union acpi_operand_object *next_handler_obj; + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + acpi_status status; - ACPI_FUNCTION_NAME ("ev_install_handler"); + ACPI_FUNCTION_NAME(ev_install_handler); - - handler_obj = (union acpi_operand_object *) context; + handler_obj = (union acpi_operand_object *)context; /* Parameter validation */ @@ -648,7 +670,7 @@ acpi_ev_install_handler ( /* Convert and validate the device handle */ - node = acpi_ns_map_handle_to_node (obj_handle); + node = acpi_ns_map_handle_to_node(obj_handle); if (!node) { return (AE_BAD_PARAMETER); } @@ -658,15 +680,15 @@ acpi_ev_install_handler ( * that are allowed to have address space handlers */ if ((node->type != ACPI_TYPE_DEVICE) && - (node->type != ACPI_TYPE_REGION) && - (node != acpi_gbl_root_node)) { + (node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) { return (AE_OK); } /* Check for an existing internal object */ - obj_desc = acpi_ns_get_attached_object (node); + obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { + /* No object, just exit */ return (AE_OK); @@ -674,18 +696,24 @@ acpi_ev_install_handler ( /* Devices are handled different than regions */ - if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_DEVICE) { + if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_DEVICE) { + /* Check if this Device already has a handler for this address space */ next_handler_obj = obj_desc->device.handler; while (next_handler_obj) { + /* Found a handler, is it for the same address space? */ - if (next_handler_obj->address_space.space_id == handler_obj->address_space.space_id) { - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Found handler for region [%s] in device %p(%p) handler %p\n", - acpi_ut_get_region_name (handler_obj->address_space.space_id), - obj_desc, next_handler_obj, handler_obj)); + if (next_handler_obj->address_space.space_id == + handler_obj->address_space.space_id) { + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Found handler for region [%s] in device %p(%p) handler %p\n", + acpi_ut_get_region_name + (handler_obj->address_space. + space_id), obj_desc, + next_handler_obj, + handler_obj)); /* * Since the object we found it on was a device, then it @@ -726,15 +754,14 @@ acpi_ev_install_handler ( * * First disconnect region for any previous handler (if any) */ - acpi_ev_detach_region (obj_desc, FALSE); + acpi_ev_detach_region(obj_desc, FALSE); /* Connect the region to the new handler */ - status = acpi_ev_attach_region (handler_obj, obj_desc, FALSE); + status = acpi_ev_attach_region(handler_obj, obj_desc, FALSE); return (status); } - /******************************************************************************* * * FUNCTION: acpi_ev_install_space_handler @@ -753,32 +780,27 @@ acpi_ev_install_handler ( ******************************************************************************/ acpi_status -acpi_ev_install_space_handler ( - struct acpi_namespace_node *node, - acpi_adr_space_type space_id, - acpi_adr_space_handler handler, - acpi_adr_space_setup setup, - void *context) +acpi_ev_install_space_handler(struct acpi_namespace_node * node, + acpi_adr_space_type space_id, + acpi_adr_space_handler handler, + acpi_adr_space_setup setup, void *context) { - union acpi_operand_object *obj_desc; - union acpi_operand_object *handler_obj; - acpi_status status; - acpi_object_type type; - u16 flags = 0; - - - ACPI_FUNCTION_TRACE ("ev_install_space_handler"); + union acpi_operand_object *obj_desc; + union acpi_operand_object *handler_obj; + acpi_status status; + acpi_object_type type; + u8 flags = 0; + ACPI_FUNCTION_TRACE(ev_install_space_handler); /* * This registration is valid for only the types below * and the root. This is where the default handlers * get placed. */ - if ((node->type != ACPI_TYPE_DEVICE) && - (node->type != ACPI_TYPE_PROCESSOR) && - (node->type != ACPI_TYPE_THERMAL) && - (node != acpi_gbl_root_node)) { + if ((node->type != ACPI_TYPE_DEVICE) && + (node->type != ACPI_TYPE_PROCESSOR) && + (node->type != ACPI_TYPE_THERMAL) && (node != acpi_gbl_root_node)) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } @@ -789,32 +811,32 @@ acpi_ev_install_space_handler ( switch (space_id) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: handler = acpi_ex_system_memory_space_handler; - setup = acpi_ev_system_memory_region_setup; + setup = acpi_ev_system_memory_region_setup; break; case ACPI_ADR_SPACE_SYSTEM_IO: handler = acpi_ex_system_io_space_handler; - setup = acpi_ev_io_space_region_setup; + setup = acpi_ev_io_space_region_setup; break; case ACPI_ADR_SPACE_PCI_CONFIG: handler = acpi_ex_pci_config_space_handler; - setup = acpi_ev_pci_config_region_setup; + setup = acpi_ev_pci_config_region_setup; break; case ACPI_ADR_SPACE_CMOS: handler = acpi_ex_cmos_space_handler; - setup = acpi_ev_cmos_region_setup; + setup = acpi_ev_cmos_region_setup; break; case ACPI_ADR_SPACE_PCI_BAR_TARGET: handler = acpi_ex_pci_bar_space_handler; - setup = acpi_ev_pci_bar_region_setup; + setup = acpi_ev_pci_bar_region_setup; break; case ACPI_ADR_SPACE_DATA_TABLE: handler = acpi_ex_data_table_space_handler; - setup = NULL; + setup = NULL; break; default: @@ -831,7 +853,7 @@ acpi_ev_install_space_handler ( /* Check for an existing internal object */ - obj_desc = acpi_ns_get_attached_object (node); + obj_desc = acpi_ns_get_attached_object(node); if (obj_desc) { /* * The attached device object already exists. @@ -842,18 +864,20 @@ acpi_ev_install_space_handler ( /* Walk the handler list for this device */ while (handler_obj) { + /* Same space_id indicates a handler already installed */ if (handler_obj->address_space.space_id == space_id) { - if (handler_obj->address_space.handler == handler) { + if (handler_obj->address_space.handler == + handler) { /* * It is (relatively) OK to attempt to install the SAME - * handler twice. This can easily happen with PCI_Config space. + * handler twice. This can easily happen + * with PCI_Config space. */ status = AE_SAME_HANDLER; goto unlock_and_exit; - } - else { + } else { /* A handler is already installed */ status = AE_ALREADY_EXISTS; @@ -865,21 +889,20 @@ acpi_ev_install_space_handler ( handler_obj = handler_obj->address_space.next; } - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Creating object on Device %p while installing handler\n", node)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Creating object on Device %p while installing handler\n", + node)); /* obj_desc does not exist, create one */ if (node->type == ACPI_TYPE_ANY) { type = ACPI_TYPE_DEVICE; - } - else { + } else { type = node->type; } - obj_desc = acpi_ut_create_internal_object (type); + obj_desc = acpi_ut_create_internal_object(type); if (!obj_desc) { status = AE_NO_MEMORY; goto unlock_and_exit; @@ -891,21 +914,21 @@ acpi_ev_install_space_handler ( /* Attach the new object to the Node */ - status = acpi_ns_attach_object (node, obj_desc, type); + status = acpi_ns_attach_object(node, obj_desc, type); /* Remove local reference to the object */ - acpi_ut_remove_reference (obj_desc); + acpi_ut_remove_reference(obj_desc); - if (ACPI_FAILURE (status)) { + if (ACPI_FAILURE(status)) { goto unlock_and_exit; } } - ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, - "Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n", - acpi_ut_get_region_name (space_id), space_id, - acpi_ut_get_node_name (node), node, obj_desc)); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n", + acpi_ut_get_region_name(space_id), space_id, + acpi_ut_get_node_name(node), node, obj_desc)); /* * Install the handler @@ -914,7 +937,8 @@ acpi_ev_install_space_handler ( * Just allocate the object for the handler and link it * into the list. */ - handler_obj = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_ADDRESS_HANDLER); + handler_obj = + acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_ADDRESS_HANDLER); if (!handler_obj) { status = AE_NO_MEMORY; goto unlock_and_exit; @@ -922,17 +946,17 @@ acpi_ev_install_space_handler ( /* Init handler obj */ - handler_obj->address_space.space_id = (u8) space_id; - handler_obj->address_space.hflags = flags; + handler_obj->address_space.space_id = (u8) space_id; + handler_obj->address_space.handler_flags = flags; handler_obj->address_space.region_list = NULL; - handler_obj->address_space.node = node; - handler_obj->address_space.handler = handler; - handler_obj->address_space.context = context; - handler_obj->address_space.setup = setup; + handler_obj->address_space.node = node; + handler_obj->address_space.handler = handler; + handler_obj->address_space.context = context; + handler_obj->address_space.setup = setup; /* Install at head of Device.address_space list */ - handler_obj->address_space.next = obj_desc->device.handler; + handler_obj->address_space.next = obj_desc->device.handler; /* * The Device object is the first reference on the handler_obj. @@ -952,15 +976,15 @@ acpi_ev_install_space_handler ( * In either case, back up and search down the remainder * of the branch */ - status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, - ACPI_NS_WALK_UNLOCK, acpi_ev_install_handler, - handler_obj, NULL); + status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, + ACPI_NS_WALK_UNLOCK, + acpi_ev_install_handler, handler_obj, + NULL); -unlock_and_exit: - return_ACPI_STATUS (status); + unlock_and_exit: + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_execute_reg_methods @@ -976,15 +1000,12 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_ev_execute_reg_methods ( - struct acpi_namespace_node *node, - acpi_adr_space_type space_id) +acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, + acpi_adr_space_type space_id) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ev_execute_reg_methods"); + acpi_status status; + ACPI_FUNCTION_TRACE(ev_execute_reg_methods); /* * Run all _REG methods for all Operation Regions for this @@ -993,42 +1014,37 @@ acpi_ev_execute_reg_methods ( * must be installed for all regions of this Space ID before we * can run any _REG methods) */ - status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, - ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, - &space_id, NULL); + status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, + ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, + &space_id, NULL); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_reg_run * * PARAMETERS: walk_namespace callback * - * DESCRIPTION: Run _REg method for region objects of the requested space_iD + * DESCRIPTION: Run _REG method for region objects of the requested space_iD * ******************************************************************************/ -acpi_status -acpi_ev_reg_run ( - acpi_handle obj_handle, - u32 level, - void *context, - void **return_value) +static acpi_status +acpi_ev_reg_run(acpi_handle obj_handle, + u32 level, void *context, void **return_value) { - union acpi_operand_object *obj_desc; - struct acpi_namespace_node *node; - acpi_adr_space_type space_id; - acpi_status status; - + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + acpi_adr_space_type space_id; + acpi_status status; - space_id = *ACPI_CAST_PTR (acpi_adr_space_type, context); + space_id = *ACPI_CAST_PTR(acpi_adr_space_type, context); /* Convert and validate the device handle */ - node = acpi_ns_map_handle_to_node (obj_handle); + node = acpi_ns_map_handle_to_node(obj_handle); if (!node) { return (AE_BAD_PARAMETER); } @@ -1037,15 +1053,15 @@ acpi_ev_reg_run ( * We only care about regions.and objects * that are allowed to have address space handlers */ - if ((node->type != ACPI_TYPE_REGION) && - (node != acpi_gbl_root_node)) { + if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) { return (AE_OK); } /* Check for an existing internal object */ - obj_desc = acpi_ns_get_attached_object (node); + obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { + /* No object, just exit */ return (AE_OK); @@ -1061,7 +1077,6 @@ acpi_ev_reg_run ( return (AE_OK); } - status = acpi_ev_execute_reg_method (obj_desc, 1); + status = acpi_ev_execute_reg_method(obj_desc, 1); return (status); } -