105 static u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts)  in blk_to_nvme_status()  argument
120 		req->error_loc = offsetof(struct nvme_rw_command, length);  in blk_to_nvme_status()
124 		req->error_loc = offsetof(struct nvme_rw_command, slba);  in blk_to_nvme_status()
127 		req->error_loc = offsetof(struct nvme_common_command, opcode);  in blk_to_nvme_status()
128 		switch (req->cmd->common.opcode) {  in blk_to_nvme_status()
139 		req->error_loc = offsetof(struct nvme_rw_command, nsid);  in blk_to_nvme_status()
144 		req->error_loc = offsetof(struct nvme_common_command, opcode);  in blk_to_nvme_status()
147 	switch (req->cmd->common.opcode) {  in blk_to_nvme_status()
150 		req->error_slba = le64_to_cpu(req->cmd->rw.slba);  in blk_to_nvme_status()
153 		req->error_slba =  in blk_to_nvme_status()
154 			le64_to_cpu(req->cmd->write_zeroes.slba);  in blk_to_nvme_status()
157 		req->error_slba = 0;  in blk_to_nvme_status()
164 	struct nvmet_req *req = bio->bi_private;  in nvmet_bio_done()  local
166 	nvmet_req_complete(req, blk_to_nvme_status(req, bio->bi_status));  in nvmet_bio_done()
167 	if (bio != &req->b.inline_bio)  in nvmet_bio_done()
172 static int nvmet_bdev_alloc_bip(struct nvmet_req *req, struct bio *bio,  in nvmet_bdev_alloc_bip()  argument
177 	struct block_device *bdev = req->ns->bdev;  in nvmet_bdev_alloc_bip()
188 		min_t(unsigned int, req->metadata_sg_cnt, BIO_MAX_PAGES));  in nvmet_bdev_alloc_bip()
219 static int nvmet_bdev_alloc_bip(struct nvmet_req *req, struct bio *bio,  in nvmet_bdev_alloc_bip()  argument
226 static void nvmet_bdev_execute_rw(struct nvmet_req *req)  in nvmet_bdev_execute_rw()  argument
228 	int sg_cnt = req->sg_cnt;  in nvmet_bdev_execute_rw()
236 	unsigned int total_len = nvmet_rw_data_len(req) + req->metadata_len;  in nvmet_bdev_execute_rw()
238 	if (!nvmet_check_transfer_len(req, total_len))  in nvmet_bdev_execute_rw()
241 	if (!req->sg_cnt) {  in nvmet_bdev_execute_rw()
242 		nvmet_req_complete(req, 0);  in nvmet_bdev_execute_rw()
246 	if (req->cmd->rw.opcode == nvme_cmd_write) {  in nvmet_bdev_execute_rw()
248 		if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA))  in nvmet_bdev_execute_rw()
256 	if (is_pci_p2pdma_page(sg_page(req->sg)))  in nvmet_bdev_execute_rw()
259 	sector = le64_to_cpu(req->cmd->rw.slba);  in nvmet_bdev_execute_rw()
260 	sector <<= (req->ns->blksize_shift - 9);  in nvmet_bdev_execute_rw()
262 	if (req->transfer_len <= NVMET_MAX_INLINE_DATA_LEN) {  in nvmet_bdev_execute_rw()
263 		bio = &req->b.inline_bio;  in nvmet_bdev_execute_rw()
264 		bio_init(bio, req->inline_bvec, ARRAY_SIZE(req->inline_bvec));  in nvmet_bdev_execute_rw()
268 	bio_set_dev(bio, req->ns->bdev);  in nvmet_bdev_execute_rw()
270 	bio->bi_private = req;  in nvmet_bdev_execute_rw()
275 	if (req->metadata_len)  in nvmet_bdev_execute_rw()
276 		sg_miter_start(&prot_miter, req->metadata_sg,  in nvmet_bdev_execute_rw()
277 			       req->metadata_sg_cnt, iter_flags);  in nvmet_bdev_execute_rw()
279 	for_each_sg(req->sg, sg, req->sg_cnt, i) {  in nvmet_bdev_execute_rw()
284 			if (req->metadata_len) {  in nvmet_bdev_execute_rw()
285 				rc = nvmet_bdev_alloc_bip(req, bio,  in nvmet_bdev_execute_rw()
294 			bio_set_dev(bio, req->ns->bdev);  in nvmet_bdev_execute_rw()
306 	if (req->metadata_len) {  in nvmet_bdev_execute_rw()
307 		rc = nvmet_bdev_alloc_bip(req, bio, &prot_miter);  in nvmet_bdev_execute_rw()
318 static void nvmet_bdev_execute_flush(struct nvmet_req *req)  in nvmet_bdev_execute_flush()  argument
320 	struct bio *bio = &req->b.inline_bio;  in nvmet_bdev_execute_flush()
322 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_bdev_execute_flush()
325 	bio_init(bio, req->inline_bvec, ARRAY_SIZE(req->inline_bvec));  in nvmet_bdev_execute_flush()
326 	bio_set_dev(bio, req->ns->bdev);  in nvmet_bdev_execute_flush()
327 	bio->bi_private = req;  in nvmet_bdev_execute_flush()
334 u16 nvmet_bdev_flush(struct nvmet_req *req)  in nvmet_bdev_flush()  argument
336 	if (blkdev_issue_flush(req->ns->bdev, GFP_KERNEL))  in nvmet_bdev_flush()
341 static u16 nvmet_bdev_discard_range(struct nvmet_req *req,  in nvmet_bdev_discard_range()  argument
344 	struct nvmet_ns *ns = req->ns;  in nvmet_bdev_discard_range()
352 		req->error_slba = le64_to_cpu(range->slba);  in nvmet_bdev_discard_range()
353 		return errno_to_nvme_status(req, ret);  in nvmet_bdev_discard_range()
358 static void nvmet_bdev_execute_discard(struct nvmet_req *req)  in nvmet_bdev_execute_discard()  argument
365 	for (i = 0; i <= le32_to_cpu(req->cmd->dsm.nr); i++) {  in nvmet_bdev_execute_discard()
366 		status = nvmet_copy_from_sgl(req, i * sizeof(range), &range,  in nvmet_bdev_execute_discard()
371 		status = nvmet_bdev_discard_range(req, &range, &bio);  in nvmet_bdev_execute_discard()
377 		bio->bi_private = req;  in nvmet_bdev_execute_discard()
384 		nvmet_req_complete(req, status);  in nvmet_bdev_execute_discard()
388 static void nvmet_bdev_execute_dsm(struct nvmet_req *req)  in nvmet_bdev_execute_dsm()  argument
390 	if (!nvmet_check_data_len_lte(req, nvmet_dsm_len(req)))  in nvmet_bdev_execute_dsm()
393 	switch (le32_to_cpu(req->cmd->dsm.attributes)) {  in nvmet_bdev_execute_dsm()
395 		nvmet_bdev_execute_discard(req);  in nvmet_bdev_execute_dsm()
401 		nvmet_req_complete(req, 0);  in nvmet_bdev_execute_dsm()
406 static void nvmet_bdev_execute_write_zeroes(struct nvmet_req *req)  in nvmet_bdev_execute_write_zeroes()  argument
408 	struct nvme_write_zeroes_cmd *write_zeroes = &req->cmd->write_zeroes;  in nvmet_bdev_execute_write_zeroes()
414 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_bdev_execute_write_zeroes()
418 		(req->ns->blksize_shift - 9);  in nvmet_bdev_execute_write_zeroes()
420 		(req->ns->blksize_shift - 9));  in nvmet_bdev_execute_write_zeroes()
422 	ret = __blkdev_issue_zeroout(req->ns->bdev, sector, nr_sector,  in nvmet_bdev_execute_write_zeroes()
425 		bio->bi_private = req;  in nvmet_bdev_execute_write_zeroes()
429 		nvmet_req_complete(req, errno_to_nvme_status(req, ret));  in nvmet_bdev_execute_write_zeroes()
433 u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req)  in nvmet_bdev_parse_io_cmd()  argument
435 	struct nvme_command *cmd = req->cmd;  in nvmet_bdev_parse_io_cmd()
440 		req->execute = nvmet_bdev_execute_rw;  in nvmet_bdev_parse_io_cmd()
441 		if (req->sq->ctrl->pi_support && nvmet_ns_has_pi(req->ns))  in nvmet_bdev_parse_io_cmd()
442 			req->metadata_len = nvmet_rw_metadata_len(req);  in nvmet_bdev_parse_io_cmd()
445 		req->execute = nvmet_bdev_execute_flush;  in nvmet_bdev_parse_io_cmd()
448 		req->execute = nvmet_bdev_execute_dsm;  in nvmet_bdev_parse_io_cmd()
451 		req->execute = nvmet_bdev_execute_write_zeroes;  in nvmet_bdev_parse_io_cmd()
455 		       req->sq->qid);  in nvmet_bdev_parse_io_cmd()
456 		req->error_loc = offsetof(struct nvme_common_command, opcode);  in nvmet_bdev_parse_io_cmd()