return paddr;
}
-/*
- * Submit emeta to one LUN in the raid line at the time to avoid a deadlock when
- * taking the per LUN semaphore.
- */
-static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line,
- void *emeta_buf, u64 paddr, int dir)
+u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
- struct pblk_line_mgmt *l_mg = &pblk->l_mg;
struct pblk_line_meta *lm = &pblk->lm;
- void *ppa_list, *meta_list;
- struct bio *bio;
- struct nvm_rq rqd;
- dma_addr_t dma_ppa_list, dma_meta_list;
- int min = pblk->min_write_pgs;
- int left_ppas = lm->emeta_sec[0];
- int id = line->id;
- int rq_ppas, rq_len;
- int cmd_op, bio_op;
- int i, j;
- int ret;
+ int bit;
- if (dir == PBLK_WRITE) {
- bio_op = REQ_OP_WRITE;
- cmd_op = NVM_OP_PWRITE;
- } else if (dir == PBLK_READ) {
- bio_op = REQ_OP_READ;
- cmd_op = NVM_OP_PREAD;
- } else
- return -EINVAL;
+ /* This usually only happens on bad lines */
+ bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
+ if (bit >= lm->blk_per_line)
+ return -1;
- meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
- &dma_meta_list);
- if (!meta_list)
- return -ENOMEM;
+ return bit * geo->ws_opt;
+}
- ppa_list = meta_list + pblk_dma_meta_size;
- dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
+int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct pblk_line_meta *lm = &pblk->lm;
+ struct bio *bio;
+ struct nvm_rq rqd;
+ u64 paddr = pblk_line_smeta_start(pblk, line);
+ int i, ret;
-next_rq:
memset(&rqd, 0, sizeof(struct nvm_rq));
- rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
- rq_len = rq_ppas * geo->csecs;
+ ret = pblk_alloc_rqd_meta(pblk, &rqd);
+ if (ret)
+ return ret;
- bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
- l_mg->emeta_alloc_type, GFP_KERNEL);
+ bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
if (IS_ERR(bio)) {
ret = PTR_ERR(bio);
- goto free_rqd_dma;
+ goto clear_rqd;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
- bio_set_op_attrs(bio, bio_op, 0);
+ bio_set_op_attrs(bio, REQ_OP_READ, 0);
rqd.bio = bio;
- rqd.meta_list = meta_list;
- rqd.ppa_list = ppa_list;
- rqd.dma_meta_list = dma_meta_list;
- rqd.dma_ppa_list = dma_ppa_list;
- rqd.opcode = cmd_op;
- rqd.nr_ppas = rq_ppas;
-
- if (dir == PBLK_WRITE) {
- struct pblk_sec_meta *meta_list = rqd.meta_list;
-
- rqd.is_seq = 1;
- for (i = 0; i < rqd.nr_ppas; ) {
- spin_lock(&line->lock);
- paddr = __pblk_alloc_page(pblk, line, min);
- spin_unlock(&line->lock);
- for (j = 0; j < min; j++, i++, paddr++) {
- meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
- rqd.ppa_list[i] =
- addr_to_gen_ppa(pblk, paddr, id);
- }
- }
- } else {
- for (i = 0; i < rqd.nr_ppas; ) {
- struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, id);
- int pos = pblk_ppa_to_pos(geo, ppa);
-
- if (pblk_io_aligned(pblk, rq_ppas))
- rqd.is_seq = 1;
-
- while (test_bit(pos, line->blk_bitmap)) {
- paddr += min;
- if (pblk_boundary_paddr_checks(pblk, paddr)) {
- pblk_err(pblk, "corrupt emeta line:%d\n",
- line->id);
- bio_put(bio);
- ret = -EINTR;
- goto free_rqd_dma;
- }
-
- ppa = addr_to_gen_ppa(pblk, paddr, id);
- pos = pblk_ppa_to_pos(geo, ppa);
- }
-
- if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
- pblk_err(pblk, "corrupt emeta line:%d\n",
- line->id);
- bio_put(bio);
- ret = -EINTR;
- goto free_rqd_dma;
- }
+ rqd.opcode = NVM_OP_PREAD;
+ rqd.nr_ppas = lm->smeta_sec;
+ rqd.is_seq = 1;
- for (j = 0; j < min; j++, i++, paddr++)
- rqd.ppa_list[i] =
- addr_to_gen_ppa(pblk, paddr, line->id);
- }
- }
+ for (i = 0; i < lm->smeta_sec; i++, paddr++)
+ rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
ret = pblk_submit_io_sync(pblk, &rqd);
if (ret) {
- pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
+ pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
bio_put(bio);
- goto free_rqd_dma;
+ goto clear_rqd;
}
atomic_dec(&pblk->inflight_io);
- if (rqd.error) {
- if (dir == PBLK_WRITE)
- pblk_log_write_err(pblk, &rqd);
- else
- pblk_log_read_err(pblk, &rqd);
- }
+ if (rqd.error)
+ pblk_log_read_err(pblk, &rqd);
- emeta_buf += rq_len;
- left_ppas -= rq_ppas;
- if (left_ppas)
- goto next_rq;
-free_rqd_dma:
- nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+clear_rqd:
+ pblk_free_rqd_meta(pblk, &rqd);
return ret;
}
-u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
-{
- struct nvm_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
- struct pblk_line_meta *lm = &pblk->lm;
- int bit;
-
- /* This usually only happens on bad lines */
- bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
- if (bit >= lm->blk_per_line)
- return -1;
-
- return bit * geo->ws_opt;
-}
-
-static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
- u64 paddr, int dir)
+static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
+ u64 paddr)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct pblk_line_meta *lm = &pblk->lm;
struct bio *bio;
struct nvm_rq rqd;
- __le64 *lba_list = NULL;
+ __le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
+ __le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
int i, ret;
- int cmd_op, bio_op;
-
- if (dir == PBLK_WRITE) {
- bio_op = REQ_OP_WRITE;
- cmd_op = NVM_OP_PWRITE;
- lba_list = emeta_to_lbas(pblk, line->emeta->buf);
- } else if (dir == PBLK_READ_RECOV || dir == PBLK_READ) {
- bio_op = REQ_OP_READ;
- cmd_op = NVM_OP_PREAD;
- } else
- return -EINVAL;
memset(&rqd, 0, sizeof(struct nvm_rq));
}
bio->bi_iter.bi_sector = 0; /* internal bio */
- bio_set_op_attrs(bio, bio_op, 0);
+ bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
rqd.bio = bio;
- rqd.opcode = cmd_op;
- rqd.is_seq = 1;
+ rqd.opcode = NVM_OP_PWRITE;
rqd.nr_ppas = lm->smeta_sec;
+ rqd.is_seq = 1;
for (i = 0; i < lm->smeta_sec; i++, paddr++) {
struct pblk_sec_meta *meta_list = rqd.meta_list;
rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
-
- if (dir == PBLK_WRITE) {
- __le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
-
- meta_list[i].lba = lba_list[paddr] = addr_empty;
- }
+ meta_list[i].lba = lba_list[paddr] = addr_empty;
}
- /*
- * This I/O is sent by the write thread when a line is replace. Since
- * the write thread is the only one sending write and erase commands,
- * there is no need to take the LUN semaphore.
- */
ret = pblk_submit_io_sync(pblk, &rqd);
if (ret) {
pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
atomic_dec(&pblk->inflight_io);
if (rqd.error) {
- if (dir == PBLK_WRITE) {
- pblk_log_write_err(pblk, &rqd);
- ret = 1;
- } else if (dir == PBLK_READ)
- pblk_log_read_err(pblk, &rqd);
+ pblk_log_write_err(pblk, &rqd);
+ ret = -EIO;
}
clear_rqd:
return ret;
}
-int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line)
+int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
+ void *emeta_buf)
{
- u64 bpaddr = pblk_line_smeta_start(pblk, line);
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct nvm_geo *geo = &dev->geo;
+ struct pblk_line_mgmt *l_mg = &pblk->l_mg;
+ struct pblk_line_meta *lm = &pblk->lm;
+ void *ppa_list, *meta_list;
+ struct bio *bio;
+ struct nvm_rq rqd;
+ u64 paddr = line->emeta_ssec;
+ dma_addr_t dma_ppa_list, dma_meta_list;
+ int min = pblk->min_write_pgs;
+ int left_ppas = lm->emeta_sec[0];
+ int line_id = line->id;
+ int rq_ppas, rq_len;
+ int i, j;
+ int ret;
- return pblk_line_submit_smeta_io(pblk, line, bpaddr, PBLK_READ_RECOV);
-}
+ meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
+ &dma_meta_list);
+ if (!meta_list)
+ return -ENOMEM;
-int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line,
- void *emeta_buf)
-{
- return pblk_line_submit_emeta_io(pblk, line, emeta_buf,
- line->emeta_ssec, PBLK_READ);
+ ppa_list = meta_list + pblk_dma_meta_size;
+ dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
+
+next_rq:
+ memset(&rqd, 0, sizeof(struct nvm_rq));
+
+ rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
+ rq_len = rq_ppas * geo->csecs;
+
+ bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
+ l_mg->emeta_alloc_type, GFP_KERNEL);
+ if (IS_ERR(bio)) {
+ ret = PTR_ERR(bio);
+ goto free_rqd_dma;
+ }
+
+ bio->bi_iter.bi_sector = 0; /* internal bio */
+ bio_set_op_attrs(bio, REQ_OP_READ, 0);
+
+ rqd.bio = bio;
+ rqd.meta_list = meta_list;
+ rqd.ppa_list = ppa_list;
+ rqd.dma_meta_list = dma_meta_list;
+ rqd.dma_ppa_list = dma_ppa_list;
+ rqd.opcode = NVM_OP_PREAD;
+ rqd.nr_ppas = rq_ppas;
+
+ for (i = 0; i < rqd.nr_ppas; ) {
+ struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, line_id);
+ int pos = pblk_ppa_to_pos(geo, ppa);
+
+ if (pblk_io_aligned(pblk, rq_ppas))
+ rqd.is_seq = 1;
+
+ while (test_bit(pos, line->blk_bitmap)) {
+ paddr += min;
+ if (pblk_boundary_paddr_checks(pblk, paddr)) {
+ bio_put(bio);
+ ret = -EINTR;
+ goto free_rqd_dma;
+ }
+
+ ppa = addr_to_gen_ppa(pblk, paddr, line_id);
+ pos = pblk_ppa_to_pos(geo, ppa);
+ }
+
+ if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
+ bio_put(bio);
+ ret = -EINTR;
+ goto free_rqd_dma;
+ }
+
+ for (j = 0; j < min; j++, i++, paddr++)
+ rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line_id);
+ }
+
+ ret = pblk_submit_io_sync(pblk, &rqd);
+ if (ret) {
+ pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
+ bio_put(bio);
+ goto free_rqd_dma;
+ }
+
+ atomic_dec(&pblk->inflight_io);
+
+ if (rqd.error)
+ pblk_log_read_err(pblk, &rqd);
+
+ emeta_buf += rq_len;
+ left_ppas -= rq_ppas;
+ if (left_ppas)
+ goto next_rq;
+
+free_rqd_dma:
+ nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+ return ret;
}
static void pblk_setup_e_rq(struct pblk *pblk, struct nvm_rq *rqd,
line->smeta_ssec = off;
line->cur_sec = off + lm->smeta_sec;
- if (init && pblk_line_submit_smeta_io(pblk, line, off, PBLK_WRITE)) {
+ if (init && pblk_line_smeta_write(pblk, line, off)) {
pblk_debug(pblk, "line smeta I/O failed. Retry\n");
return 0;
}
projects / openwrt / staging / blogic.git / commitdiff