39 	struct bsg_job *job = blk_mq_rq_to_pdu(rq);  in bsg_transport_fill_hdr()  local
42 	job->request_len = hdr->request_len;  in bsg_transport_fill_hdr()
43 	job->request = memdup_user(uptr64(hdr->request), hdr->request_len);  in bsg_transport_fill_hdr()
44 	if (IS_ERR(job->request))  in bsg_transport_fill_hdr()
45 		return PTR_ERR(job->request);  in bsg_transport_fill_hdr()
48 		job->bidi_rq = blk_get_request(rq->q, REQ_OP_SCSI_IN, 0);  in bsg_transport_fill_hdr()
49 		if (IS_ERR(job->bidi_rq)) {  in bsg_transport_fill_hdr()
50 			ret = PTR_ERR(job->bidi_rq);  in bsg_transport_fill_hdr()
54 		ret = blk_rq_map_user(rq->q, job->bidi_rq, NULL,  in bsg_transport_fill_hdr()
60 		job->bidi_bio = job->bidi_rq->bio;  in bsg_transport_fill_hdr()
62 		job->bidi_rq = NULL;  in bsg_transport_fill_hdr()
63 		job->bidi_bio = NULL;  in bsg_transport_fill_hdr()
69 	if (job->bidi_rq)  in bsg_transport_fill_hdr()
70 		blk_put_request(job->bidi_rq);  in bsg_transport_fill_hdr()
72 	kfree(job->request);  in bsg_transport_fill_hdr()
78 	struct bsg_job *job = blk_mq_rq_to_pdu(rq);  in bsg_transport_complete_rq()  local
85 	hdr->device_status = job->result & 0xff;  in bsg_transport_complete_rq()
86 	hdr->transport_status = host_byte(job->result);  in bsg_transport_complete_rq()
87 	hdr->driver_status = driver_byte(job->result);  in bsg_transport_complete_rq()
93 	if (job->result < 0) {  in bsg_transport_complete_rq()
95 		job->reply_len = sizeof(u32);  in bsg_transport_complete_rq()
96 		ret = job->result;  in bsg_transport_complete_rq()
99 	if (job->reply_len && hdr->response) {  in bsg_transport_complete_rq()
100 		int len = min(hdr->max_response_len, job->reply_len);  in bsg_transport_complete_rq()
102 		if (copy_to_user(uptr64(hdr->response), job->reply, len))  in bsg_transport_complete_rq()
111 	if (job->bidi_rq) {  in bsg_transport_complete_rq()
112 		unsigned int rsp_len = job->reply_payload.payload_len;  in bsg_transport_complete_rq()
114 		if (WARN_ON(job->reply_payload_rcv_len > rsp_len))  in bsg_transport_complete_rq()
117 			hdr->din_resid = rsp_len - job->reply_payload_rcv_len;  in bsg_transport_complete_rq()
127 	struct bsg_job *job = blk_mq_rq_to_pdu(rq);  in bsg_transport_free_rq()  local
129 	if (job->bidi_rq) {  in bsg_transport_free_rq()
130 		blk_rq_unmap_user(job->bidi_bio);  in bsg_transport_free_rq()
131 		blk_put_request(job->bidi_rq);  in bsg_transport_free_rq()
134 	kfree(job->request);  in bsg_transport_free_rq()
145  * bsg_teardown_job - routine to teardown a bsg job
150 	struct bsg_job *job = container_of(kref, struct bsg_job, kref);  in bsg_teardown_job()  local
151 	struct request *rq = blk_mq_rq_from_pdu(job);  in bsg_teardown_job()
153 	put_device(job->dev);	/* release reference for the request */  in bsg_teardown_job()
155 	kfree(job->request_payload.sg_list);  in bsg_teardown_job()
156 	kfree(job->reply_payload.sg_list);  in bsg_teardown_job()
161 void bsg_job_put(struct bsg_job *job)  in bsg_job_put()  argument
163 	kref_put(&job->kref, bsg_teardown_job);  in bsg_job_put()
167 int bsg_job_get(struct bsg_job *job)  in bsg_job_get()  argument
169 	return kref_get_unless_zero(&job->kref);  in bsg_job_get()
175  * @job: bsg_job that is complete
176  * @result: job reply result
179  * The LLD should call this when the bsg job has completed.
181 void bsg_job_done(struct bsg_job *job, int result,  in bsg_job_done()  argument
184 	struct request *rq = blk_mq_rq_from_pdu(job);  in bsg_job_done()
186 	job->result = result;  in bsg_job_done()
187 	job->reply_payload_rcv_len = reply_payload_rcv_len;  in bsg_job_done()
195  * @rq: BSG request that holds the job to be destroyed
199 	struct bsg_job *job = blk_mq_rq_to_pdu(rq);  in bsg_complete()  local
201 	bsg_job_put(job);  in bsg_complete()
222  * @req: BSG request that needs a job structure
226 	struct bsg_job *job = blk_mq_rq_to_pdu(req);  in bsg_prepare_job()  local
229 	job->timeout = req->timeout;  in bsg_prepare_job()
232 		ret = bsg_map_buffer(&job->request_payload, req);  in bsg_prepare_job()
236 	if (job->bidi_rq) {  in bsg_prepare_job()
237 		ret = bsg_map_buffer(&job->reply_payload, job->bidi_rq);  in bsg_prepare_job()
241 	job->dev = dev;  in bsg_prepare_job()
243 	get_device(job->dev);  in bsg_prepare_job()
244 	kref_init(&job->kref);  in bsg_prepare_job()
248 	kfree(job->request_payload.sg_list);  in bsg_prepare_job()
250 	job->result = -ENOMEM;  in bsg_prepare_job()
296 	struct bsg_job *job = blk_mq_rq_to_pdu(req);  in bsg_init_rq()  local
298 	job->reply = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);  in bsg_init_rq()
299 	if (!job->reply)  in bsg_init_rq()
307 	struct bsg_job *job = blk_mq_rq_to_pdu(req);  in bsg_initialize_rq()  local
308 	void *reply = job->reply;  in bsg_initialize_rq()
310 	memset(job, 0, sizeof(*job));  in bsg_initialize_rq()
311 	job->reply = reply;  in bsg_initialize_rq()
312 	job->reply_len = SCSI_SENSE_BUFFERSIZE;  in bsg_initialize_rq()
313 	job->dd_data = job + 1;  in bsg_initialize_rq()
319 	struct bsg_job *job = blk_mq_rq_to_pdu(req);  in bsg_exit_rq()  local
321 	kfree(job->reply);  in bsg_exit_rq()
361  * @job_fn: bsg job handler
363  * @dd_job_size: size of LLD data needed for each job