97 	 * If the request packet has already been sent, we need to see  in fw_cancel_transaction()
279  * __fw_send_request() - submit a request packet for transmission to generate callback for response
281  * @card:		interface to send the request at
282  * @t:			transaction instance to which the request belongs
285  * @generation:		bus generation in which request and response are valid
288  * @payload:		data payload for the request subaction
295  * Submit a request packet into the asynchronous request transmission queue.
303  * @generation.  Otherwise the request is in danger to be sent to a wrong node.
314  * In case of request types without payload, @data is NULL and @length is 0.
321  * %RCODE_NO_ACK) denote transaction timeout, busy responder, stale request
325  * than when the request packet actually hits the wire.  On the other hand,
406  * fw_run_transaction() - send request and sleep until transaction is completed
407  * @card:		card interface for this request
410  * @generation:		bus generation in which request and response are valid
413  * @payload:		data payload for the request subaction
417  * Unlike fw_send_request(), @data points to the payload of the request or/and
419  * request payloads of >= 8 bytes but not to inbound response payloads.
560  * When a request is received that falls within the specified address range,
562  * give the details of the particular request.
636 void fw_request_get(struct fw_request *request)  in fw_request_get()  argument
638 	kref_get(&request->kref);  in fw_request_get()
643 	struct fw_request *request = container_of(kref, struct fw_request, kref);  in release_request()  local
645 	kfree(request);  in release_request()
648 void fw_request_put(struct fw_request *request)  in fw_request_put()  argument
650 	kref_put(&request->kref, release_request);  in fw_request_put()
656 	struct fw_request *request = container_of(packet, struct fw_request, response);  in free_response_callback()  local
658 	trace_async_response_outbound_complete((uintptr_t)request, card->index, packet->generation,  in free_response_callback()
662 	fw_request_put(request);  in free_response_callback()
665 	fw_request_put(request);  in free_response_callback()
776 	struct fw_request *request;  in allocate_request()  local
804 		fw_notice(card, "ERROR - corrupt request received - %08x %08x %08x\n",  in allocate_request()
809 	request = kmalloc(sizeof(*request) + length, GFP_ATOMIC);  in allocate_request()
810 	if (request == NULL)  in allocate_request()
812 	kref_init(&request->kref);  in allocate_request()
814 	request->response.speed = p->speed;  in allocate_request()
815 	request->response.timestamp =  in allocate_request()
817 	request->response.generation = p->generation;  in allocate_request()
818 	request->response.ack = 0;  in allocate_request()
819 	request->response.callback = free_response_callback;  in allocate_request()
820 	request->ack = p->ack;  in allocate_request()
821 	request->timestamp = p->timestamp;  in allocate_request()
822 	request->length = length;  in allocate_request()
824 		memcpy(request->data, data, length);  in allocate_request()
826 	memcpy(request->request_header, p->header, sizeof(p->header));  in allocate_request()
828 	return request;  in allocate_request()
834  * @request:	firewire request data for the transaction.
837  * Submit a response packet into the asynchronous response transmission queue. The @request
841 		      struct fw_request *request, int rcode)  in fw_send_response()  argument
847 	if (request->ack != ACK_PENDING ||  in fw_send_response()
848 	    HEADER_DESTINATION_IS_BROADCAST(request->request_header)) {  in fw_send_response()
849 		fw_request_put(request);  in fw_send_response()
854 		data = request->data;  in fw_send_response()
855 		data_length = fw_get_response_length(request);  in fw_send_response()
858 	fw_fill_response(&request->response, request->request_header, rcode, data, data_length);  in fw_send_response()
861 	fw_request_get(request);  in fw_send_response()
863 	trace_async_response_outbound_initiate((uintptr_t)request, card->index,  in fw_send_response()
864 					       request->response.generation, request->response.speed,  in fw_send_response()
865 					       request->response.header, data,  in fw_send_response()
868 	card->driver->send_response(card, &request->response);  in fw_send_response()
873  * fw_get_request_speed() - returns speed at which the @request was received
874  * @request: firewire request data
876 int fw_get_request_speed(struct fw_request *request)  in fw_get_request_speed()  argument
878 	return request->response.speed;  in fw_get_request_speed()
883  * fw_request_get_timestamp: Get timestamp of the request.
884  * @request: The opaque pointer to request structure.
886  * Get timestamp when 1394 OHCI controller receives the asynchronous request subaction. The
890  * Returns: timestamp of the request.
892 u32 fw_request_get_timestamp(const struct fw_request *request)  in fw_request_get_timestamp()  argument
894 	return request->timestamp;  in fw_request_get_timestamp()
900 					    struct fw_request *request,  in handle_exclusive_region_request()  argument
914 							   request->length);  in handle_exclusive_region_request()
916 			handler->address_callback(card, request, tcode, destination, source,  in handle_exclusive_region_request()
917 						  p->generation, offset, request->data,  in handle_exclusive_region_request()
918 						  request->length, handler->callback_data);  in handle_exclusive_region_request()
922 		fw_send_response(card, request, RCODE_ADDRESS_ERROR);  in handle_exclusive_region_request()
927 				      struct fw_request *request,  in handle_fcp_region_request()  argument
935 	    request->length > 0x200) {  in handle_fcp_region_request()
936 		fw_send_response(card, request, RCODE_ADDRESS_ERROR);  in handle_fcp_region_request()
947 		fw_send_response(card, request, RCODE_TYPE_ERROR);  in handle_fcp_region_request()
954 			if (is_enclosing_handler(handler, offset, request->length))  in handle_fcp_region_request()
955 				handler->address_callback(card, request, tcode, destination, source,  in handle_fcp_region_request()
956 							  p->generation, offset, request->data,  in handle_fcp_region_request()
957 							  request->length, handler->callback_data);  in handle_fcp_region_request()
961 	fw_send_response(card, request, RCODE_COMPLETE);  in handle_fcp_region_request()
966 	struct fw_request *request;  in fw_core_handle_request()  local
981 	request = allocate_request(card, p);  in fw_core_handle_request()
982 	if (request == NULL) {  in fw_core_handle_request()
987 	trace_async_request_inbound((uintptr_t)request, card->index, p->generation, p->speed,  in fw_core_handle_request()
988 				    p->ack, p->timestamp, p->header, request->data,  in fw_core_handle_request()
989 				    tcode_is_read_request(tcode) ? 0 : request->length / 4);  in fw_core_handle_request()
993 	if (!is_in_fcp_region(offset, request->length))  in fw_core_handle_request()
994 		handle_exclusive_region_request(card, p, request, offset);  in fw_core_handle_request()
996 		handle_fcp_region_request(card, p, request, offset);  in fw_core_handle_request()
1014 	// and addresses match to the transaction request queried later.  in fw_core_handle_response()
1065 	 * The response handler may be executed while the request handler  in fw_core_handle_response()
1066 	 * is still pending.  Cancel the request handler.  in fw_core_handle_response()
1109 static void handle_topology_map(struct fw_card *card, struct fw_request *request,  in handle_topology_map()  argument
1117 		fw_send_response(card, request, RCODE_TYPE_ERROR);  in handle_topology_map()
1122 		fw_send_response(card, request, RCODE_ADDRESS_ERROR);  in handle_topology_map()
1129 	fw_send_response(card, request, RCODE_COMPLETE);  in handle_topology_map()
1154 static void handle_registers(struct fw_card *card, struct fw_request *request,  in handle_registers()  argument
1251 		 * the stack never sees these request. If we add  in handle_registers()
1264 	fw_send_response(card, request, rcode);  in handle_registers()
1272 static void handle_low_memory(struct fw_card *card, struct fw_request *request,  in handle_low_memory()  argument
1281 	fw_send_response(card, request, RCODE_TYPE_ERROR);  in handle_low_memory()