acpi/acpica/evhandler.c

65 	 * We install the default PCI config space handler at the root so that
72 	 * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
110  * RETURN:      TRUE if default handler is installed, FALSE otherwise
112  * DESCRIPTION: Check if the default handler is installed for the requested
128 		handler_obj = obj_desc->common_notify.handler;
153  * DESCRIPTION: This routine installs an address handler into objects that are
156  *              If the Object is a Device, and the device has a handler of
159  *              This is because the existing handler is closer in proximity
214 		/* Check if this Device already has a handler for this address space */
220 						handler);
223 			/* Found a handler, is it for the same address space? */
226 					  "Found handler for region [%s] in device %p(%p) handler %p\n",
235 			 * that someone has already installed a handler for the branch
244 		 * As long as the device didn't have a handler for this space we
260 	 * Now we have a region and it is for the handler's address space type.
262 	 * First disconnect region for any previous handler (if any)
266 	/* Connect the region to the new handler */
277  *              handler_obj     - Head of the handler object list
279  * RETURN:      Matching handler object. NULL if space ID not matched
281  * DESCRIPTION: Search a handler object list for a match on the address
292 	/* Walk the handler list for this device */
296 		/* Same space_id indicates a handler is installed */
302 		/* Next handler object */
316  *              handler         - Address of the handler
318  *              context         - Value passed to the handler on each access
322  * DESCRIPTION: Install a handler for all op_regions of a given space_id.
330 			      acpi_adr_space_handler handler,
352 	if (handler == ACPI_DEFAULT_HANDLER) {
358 			handler = acpi_ex_system_memory_space_handler;
364 			handler = acpi_ex_system_io_space_handler;
370 			handler = acpi_ex_pci_config_space_handler;
376 			handler = acpi_ex_cmos_space_handler;
382 			handler = acpi_ex_pci_bar_space_handler;
388 			handler = acpi_ex_data_table_space_handler;
411 		 * the handler is not already installed.
416 							  handler);
419 			if (handler_obj->address_space.handler == handler) {
422 				 * handler twice. This can easily happen with the
428 				/* A handler is already installed */
437 				  "Creating object on Device %p while installing handler\n",
472 			  "Installing address handler for region %s(%X) "
478 	 * Install the handler
480 	 * At this point there is no existing handler. Just allocate the object
481 	 * for the handler and link it into the list.
490 	/* Init handler obj */
503 	handler_obj->address_space.handler = handler;
509 	handler_obj->address_space.next = obj_desc->common_notify.handler;
513 	 * Each region that uses the handler adds a reference.
515 	obj_desc->common_notify.handler = handler_obj;
518 	 * Walk the namespace finding all of the regions this handler will
523 	 * has an address handler of the same type.