2 * Copyright (C) 2016 CNEX Labs
3 * Initial release: Javier Gonzalez <javier@cnexlabs.com>
4 * Matias Bjorling <matias@cnexlabs.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * pblk-core.c - pblk's core functionality
21 static void pblk_mark_bb(struct pblk *pblk, struct pblk_line *line,
24 struct nvm_tgt_dev *dev = pblk->dev;
25 struct nvm_geo *geo = &dev->geo;
26 int pos = pblk_dev_ppa_to_pos(geo, *ppa);
28 pr_debug("pblk: erase failed: line:%d, pos:%d\n", line->id, pos);
29 atomic_long_inc(&pblk->erase_failed);
31 atomic_dec(&line->blk_in_line);
32 if (test_and_set_bit(pos, line->blk_bitmap))
33 pr_err("pblk: attempted to erase bb: line:%d, pos:%d\n",
36 pblk_line_run_ws(pblk, NULL, ppa, pblk_line_mark_bb);
39 static void __pblk_end_io_erase(struct pblk *pblk, struct nvm_rq *rqd)
41 struct pblk_line *line;
43 line = &pblk->lines[pblk_dev_ppa_to_line(rqd->ppa_addr)];
44 atomic_dec(&line->left_seblks);
49 ppa = kmalloc(sizeof(struct ppa_addr), GFP_ATOMIC);
54 pblk_mark_bb(pblk, line, ppa);
58 /* Erase completion assumes that only one block is erased at the time */
59 static void pblk_end_io_erase(struct nvm_rq *rqd)
61 struct pblk *pblk = rqd->private;
63 __pblk_end_io_erase(pblk, rqd);
64 mempool_free(rqd, pblk->g_rq_pool);
67 void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line,
70 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
71 struct list_head *move_list = NULL;
73 /* Lines being reclaimed (GC'ed) cannot be invalidated. Before the L2P
74 * table is modified with reclaimed sectors, a check is done to endure
75 * that newer updates are not overwritten.
77 spin_lock(&line->lock);
78 if (line->state == PBLK_LINESTATE_GC ||
79 line->state == PBLK_LINESTATE_FREE) {
80 spin_unlock(&line->lock);
84 if (test_and_set_bit(paddr, line->invalid_bitmap)) {
85 WARN_ONCE(1, "pblk: double invalidate\n");
86 spin_unlock(&line->lock);
89 le32_add_cpu(line->vsc, -1);
91 if (line->state == PBLK_LINESTATE_CLOSED)
92 move_list = pblk_line_gc_list(pblk, line);
93 spin_unlock(&line->lock);
96 spin_lock(&l_mg->gc_lock);
97 spin_lock(&line->lock);
98 /* Prevent moving a line that has just been chosen for GC */
99 if (line->state == PBLK_LINESTATE_GC ||
100 line->state == PBLK_LINESTATE_FREE) {
101 spin_unlock(&line->lock);
102 spin_unlock(&l_mg->gc_lock);
105 spin_unlock(&line->lock);
107 list_move_tail(&line->list, move_list);
108 spin_unlock(&l_mg->gc_lock);
112 void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
114 struct pblk_line *line;
118 #ifdef CONFIG_NVM_DEBUG
119 /* Callers must ensure that the ppa points to a device address */
120 BUG_ON(pblk_addr_in_cache(ppa));
121 BUG_ON(pblk_ppa_empty(ppa));
124 line_id = pblk_tgt_ppa_to_line(ppa);
125 line = &pblk->lines[line_id];
126 paddr = pblk_dev_ppa_to_line_addr(pblk, ppa);
128 __pblk_map_invalidate(pblk, line, paddr);
131 static void pblk_invalidate_range(struct pblk *pblk, sector_t slba,
132 unsigned int nr_secs)
136 spin_lock(&pblk->trans_lock);
137 for (lba = slba; lba < slba + nr_secs; lba++) {
140 ppa = pblk_trans_map_get(pblk, lba);
142 if (!pblk_addr_in_cache(ppa) && !pblk_ppa_empty(ppa))
143 pblk_map_invalidate(pblk, ppa);
145 pblk_ppa_set_empty(&ppa);
146 pblk_trans_map_set(pblk, lba, ppa);
148 spin_unlock(&pblk->trans_lock);
151 struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int rw)
158 pool = pblk->w_rq_pool;
159 rq_size = pblk_w_rq_size;
161 pool = pblk->g_rq_pool;
162 rq_size = pblk_g_rq_size;
165 rqd = mempool_alloc(pool, GFP_KERNEL);
166 memset(rqd, 0, rq_size);
171 void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int rw)
176 pool = pblk->w_rq_pool;
178 pool = pblk->g_rq_pool;
180 mempool_free(rqd, pool);
183 void pblk_bio_free_pages(struct pblk *pblk, struct bio *bio, int off,
189 WARN_ON(off + nr_pages != bio->bi_vcnt);
191 bio_advance(bio, off * PBLK_EXPOSED_PAGE_SIZE);
192 for (i = off; i < nr_pages + off; i++) {
193 bv = bio->bi_io_vec[i];
194 mempool_free(bv.bv_page, pblk->page_pool);
198 int pblk_bio_add_pages(struct pblk *pblk, struct bio *bio, gfp_t flags,
201 struct request_queue *q = pblk->dev->q;
205 for (i = 0; i < nr_pages; i++) {
206 page = mempool_alloc(pblk->page_pool, flags);
210 ret = bio_add_pc_page(q, bio, page, PBLK_EXPOSED_PAGE_SIZE, 0);
211 if (ret != PBLK_EXPOSED_PAGE_SIZE) {
212 pr_err("pblk: could not add page to bio\n");
213 mempool_free(page, pblk->page_pool);
220 pblk_bio_free_pages(pblk, bio, 0, i - 1);
224 static void pblk_write_kick(struct pblk *pblk)
226 wake_up_process(pblk->writer_ts);
227 mod_timer(&pblk->wtimer, jiffies + msecs_to_jiffies(1000));
230 void pblk_write_timer_fn(unsigned long data)
232 struct pblk *pblk = (struct pblk *)data;
234 /* kick the write thread every tick to flush outstanding data */
235 pblk_write_kick(pblk);
238 void pblk_write_should_kick(struct pblk *pblk)
240 unsigned int secs_avail = pblk_rb_read_count(&pblk->rwb);
242 if (secs_avail >= pblk->min_write_pgs)
243 pblk_write_kick(pblk);
246 void pblk_end_bio_sync(struct bio *bio)
248 struct completion *waiting = bio->bi_private;
253 void pblk_end_io_sync(struct nvm_rq *rqd)
255 struct completion *waiting = rqd->private;
260 void pblk_flush_writer(struct pblk *pblk)
264 DECLARE_COMPLETION_ONSTACK(wait);
266 bio = bio_alloc(GFP_KERNEL, 1);
270 bio->bi_iter.bi_sector = 0; /* internal bio */
271 bio_set_op_attrs(bio, REQ_OP_WRITE, REQ_OP_FLUSH);
272 bio->bi_private = &wait;
273 bio->bi_end_io = pblk_end_bio_sync;
275 ret = pblk_write_to_cache(pblk, bio, 0);
276 if (ret == NVM_IO_OK) {
277 if (!wait_for_completion_io_timeout(&wait,
278 msecs_to_jiffies(PBLK_COMMAND_TIMEOUT_MS))) {
279 pr_err("pblk: flush cache timed out\n");
281 } else if (ret != NVM_IO_DONE) {
282 pr_err("pblk: tear down bio failed\n");
286 pr_err("pblk: flush sync write failed (%u)\n", bio->bi_status);
291 struct list_head *pblk_line_gc_list(struct pblk *pblk, struct pblk_line *line)
293 struct pblk_line_meta *lm = &pblk->lm;
294 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
295 struct list_head *move_list = NULL;
296 int vsc = le32_to_cpu(*line->vsc);
298 lockdep_assert_held(&line->lock);
301 if (line->gc_group != PBLK_LINEGC_FULL) {
302 line->gc_group = PBLK_LINEGC_FULL;
303 move_list = &l_mg->gc_full_list;
305 } else if (vsc < lm->mid_thrs) {
306 if (line->gc_group != PBLK_LINEGC_HIGH) {
307 line->gc_group = PBLK_LINEGC_HIGH;
308 move_list = &l_mg->gc_high_list;
310 } else if (vsc < lm->high_thrs) {
311 if (line->gc_group != PBLK_LINEGC_MID) {
312 line->gc_group = PBLK_LINEGC_MID;
313 move_list = &l_mg->gc_mid_list;
315 } else if (vsc < line->sec_in_line) {
316 if (line->gc_group != PBLK_LINEGC_LOW) {
317 line->gc_group = PBLK_LINEGC_LOW;
318 move_list = &l_mg->gc_low_list;
320 } else if (vsc == line->sec_in_line) {
321 if (line->gc_group != PBLK_LINEGC_EMPTY) {
322 line->gc_group = PBLK_LINEGC_EMPTY;
323 move_list = &l_mg->gc_empty_list;
326 line->state = PBLK_LINESTATE_CORRUPT;
327 line->gc_group = PBLK_LINEGC_NONE;
328 move_list = &l_mg->corrupt_list;
329 pr_err("pblk: corrupted vsc for line %d, vsc:%d (%d/%d/%d)\n",
332 lm->high_thrs, lm->mid_thrs);
338 void pblk_discard(struct pblk *pblk, struct bio *bio)
340 sector_t slba = pblk_get_lba(bio);
341 sector_t nr_secs = pblk_get_secs(bio);
343 pblk_invalidate_range(pblk, slba, nr_secs);
346 struct ppa_addr pblk_get_lba_map(struct pblk *pblk, sector_t lba)
350 spin_lock(&pblk->trans_lock);
351 ppa = pblk_trans_map_get(pblk, lba);
352 spin_unlock(&pblk->trans_lock);
357 void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd)
359 atomic_long_inc(&pblk->write_failed);
360 #ifdef CONFIG_NVM_DEBUG
361 pblk_print_failed_rqd(pblk, rqd, rqd->error);
365 void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd)
367 /* Empty page read is not necessarily an error (e.g., L2P recovery) */
368 if (rqd->error == NVM_RSP_ERR_EMPTYPAGE) {
369 atomic_long_inc(&pblk->read_empty);
373 switch (rqd->error) {
374 case NVM_RSP_WARN_HIGHECC:
375 atomic_long_inc(&pblk->read_high_ecc);
377 case NVM_RSP_ERR_FAILECC:
378 case NVM_RSP_ERR_FAILCRC:
379 atomic_long_inc(&pblk->read_failed);
382 pr_err("pblk: unknown read error:%d\n", rqd->error);
384 #ifdef CONFIG_NVM_DEBUG
385 pblk_print_failed_rqd(pblk, rqd, rqd->error);
389 void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write)
391 pblk->sec_per_write = sec_per_write;
394 int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
396 struct nvm_tgt_dev *dev = pblk->dev;
398 #ifdef CONFIG_NVM_DEBUG
399 struct ppa_addr *ppa_list;
401 ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
402 if (pblk_boundary_ppa_checks(dev, ppa_list, rqd->nr_ppas)) {
407 if (rqd->opcode == NVM_OP_PWRITE) {
408 struct pblk_line *line;
412 for (i = 0; i < rqd->nr_ppas; i++) {
414 line = &pblk->lines[pblk_dev_ppa_to_line(ppa)];
416 spin_lock(&line->lock);
417 if (line->state != PBLK_LINESTATE_OPEN) {
418 pr_err("pblk: bad ppa: line:%d,state:%d\n",
419 line->id, line->state);
421 spin_unlock(&line->lock);
424 spin_unlock(&line->lock);
428 return nvm_submit_io(dev, rqd);
431 struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data,
432 unsigned int nr_secs, unsigned int len,
435 struct nvm_tgt_dev *dev = pblk->dev;
436 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
442 if (l_mg->emeta_alloc_type == PBLK_KMALLOC_META)
443 return bio_map_kern(dev->q, kaddr, len, gfp_mask);
445 bio = bio_kmalloc(gfp_mask, nr_secs);
447 return ERR_PTR(-ENOMEM);
449 for (i = 0; i < nr_secs; i++) {
450 page = vmalloc_to_page(kaddr);
452 pr_err("pblk: could not map vmalloc bio\n");
454 bio = ERR_PTR(-ENOMEM);
458 ret = bio_add_pc_page(dev->q, bio, page, PAGE_SIZE, 0);
459 if (ret != PAGE_SIZE) {
460 pr_err("pblk: could not add page to bio\n");
462 bio = ERR_PTR(-ENOMEM);
472 int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail,
473 unsigned long secs_to_flush)
475 int max = pblk->sec_per_write;
476 int min = pblk->min_write_pgs;
477 int secs_to_sync = 0;
479 if (secs_avail >= max)
481 else if (secs_avail >= min)
482 secs_to_sync = min * (secs_avail / min);
483 else if (secs_to_flush)
489 void pblk_dealloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs)
494 addr = find_next_zero_bit(line->map_bitmap,
495 pblk->lm.sec_per_line, line->cur_sec);
496 line->cur_sec = addr - nr_secs;
498 for (i = 0; i < nr_secs; i++, line->cur_sec--)
499 WARN_ON(!test_and_clear_bit(line->cur_sec, line->map_bitmap));
502 u64 __pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs)
507 lockdep_assert_held(&line->lock);
509 /* logic error: ppa out-of-bounds. Prevent generating bad address */
510 if (line->cur_sec + nr_secs > pblk->lm.sec_per_line) {
511 WARN(1, "pblk: page allocation out of bounds\n");
512 nr_secs = pblk->lm.sec_per_line - line->cur_sec;
515 line->cur_sec = addr = find_next_zero_bit(line->map_bitmap,
516 pblk->lm.sec_per_line, line->cur_sec);
517 for (i = 0; i < nr_secs; i++, line->cur_sec++)
518 WARN_ON(test_and_set_bit(line->cur_sec, line->map_bitmap));
523 u64 pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs)
527 /* Lock needed in case a write fails and a recovery needs to remap
528 * failed write buffer entries
530 spin_lock(&line->lock);
531 addr = __pblk_alloc_page(pblk, line, nr_secs);
532 line->left_msecs -= nr_secs;
533 WARN(line->left_msecs < 0, "pblk: page allocation out of bounds\n");
534 spin_unlock(&line->lock);
539 u64 pblk_lookup_page(struct pblk *pblk, struct pblk_line *line)
543 spin_lock(&line->lock);
544 paddr = find_next_zero_bit(line->map_bitmap,
545 pblk->lm.sec_per_line, line->cur_sec);
546 spin_unlock(&line->lock);
552 * Submit emeta to one LUN in the raid line at the time to avoid a deadlock when
553 * taking the per LUN semaphore.
555 static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line,
556 void *emeta_buf, u64 paddr, int dir)
558 struct nvm_tgt_dev *dev = pblk->dev;
559 struct nvm_geo *geo = &dev->geo;
560 struct pblk_line_meta *lm = &pblk->lm;
561 void *ppa_list, *meta_list;
564 dma_addr_t dma_ppa_list, dma_meta_list;
565 int min = pblk->min_write_pgs;
566 int left_ppas = lm->emeta_sec[0];
572 DECLARE_COMPLETION_ONSTACK(wait);
575 bio_op = REQ_OP_WRITE;
576 cmd_op = NVM_OP_PWRITE;
577 } else if (dir == READ) {
578 bio_op = REQ_OP_READ;
579 cmd_op = NVM_OP_PREAD;
583 meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
588 ppa_list = meta_list + pblk_dma_meta_size;
589 dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
592 memset(&rqd, 0, sizeof(struct nvm_rq));
594 rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
595 rq_len = rq_ppas * geo->sec_size;
597 bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len, GFP_KERNEL);
603 bio->bi_iter.bi_sector = 0; /* internal bio */
604 bio_set_op_attrs(bio, bio_op, 0);
607 rqd.meta_list = meta_list;
608 rqd.ppa_list = ppa_list;
609 rqd.dma_meta_list = dma_meta_list;
610 rqd.dma_ppa_list = dma_ppa_list;
612 rqd.nr_ppas = rq_ppas;
613 rqd.end_io = pblk_end_io_sync;
617 struct pblk_sec_meta *meta_list = rqd.meta_list;
619 rqd.flags = pblk_set_progr_mode(pblk, WRITE);
620 for (i = 0; i < rqd.nr_ppas; ) {
621 spin_lock(&line->lock);
622 paddr = __pblk_alloc_page(pblk, line, min);
623 spin_unlock(&line->lock);
624 for (j = 0; j < min; j++, i++, paddr++) {
625 meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
627 addr_to_gen_ppa(pblk, paddr, id);
631 for (i = 0; i < rqd.nr_ppas; ) {
632 struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, id);
633 int pos = pblk_dev_ppa_to_pos(geo, ppa);
634 int read_type = PBLK_READ_RANDOM;
636 if (pblk_io_aligned(pblk, rq_ppas))
637 read_type = PBLK_READ_SEQUENTIAL;
638 rqd.flags = pblk_set_read_mode(pblk, read_type);
640 while (test_bit(pos, line->blk_bitmap)) {
642 if (pblk_boundary_paddr_checks(pblk, paddr)) {
643 pr_err("pblk: corrupt emeta line:%d\n",
650 ppa = addr_to_gen_ppa(pblk, paddr, id);
651 pos = pblk_dev_ppa_to_pos(geo, ppa);
654 if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
655 pr_err("pblk: corrupt emeta line:%d\n",
662 for (j = 0; j < min; j++, i++, paddr++)
664 addr_to_gen_ppa(pblk, paddr, line->id);
668 ret = pblk_submit_io(pblk, &rqd);
670 pr_err("pblk: emeta I/O submission failed: %d\n", ret);
675 if (!wait_for_completion_io_timeout(&wait,
676 msecs_to_jiffies(PBLK_COMMAND_TIMEOUT_MS))) {
677 pr_err("pblk: emeta I/O timed out\n");
679 reinit_completion(&wait);
681 if (likely(pblk->l_mg.emeta_alloc_type == PBLK_VMALLOC_META))
686 pblk_log_write_err(pblk, &rqd);
688 pblk_log_read_err(pblk, &rqd);
692 left_ppas -= rq_ppas;
696 nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
700 u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
702 struct nvm_tgt_dev *dev = pblk->dev;
703 struct nvm_geo *geo = &dev->geo;
704 struct pblk_line_meta *lm = &pblk->lm;
707 /* This usually only happens on bad lines */
708 bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
709 if (bit >= lm->blk_per_line)
712 return bit * geo->sec_per_pl;
715 static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
718 struct nvm_tgt_dev *dev = pblk->dev;
719 struct pblk_line_meta *lm = &pblk->lm;
722 __le64 *lba_list = NULL;
726 DECLARE_COMPLETION_ONSTACK(wait);
729 bio_op = REQ_OP_WRITE;
730 cmd_op = NVM_OP_PWRITE;
731 flags = pblk_set_progr_mode(pblk, WRITE);
732 lba_list = emeta_to_lbas(pblk, line->emeta->buf);
733 } else if (dir == READ) {
734 bio_op = REQ_OP_READ;
735 cmd_op = NVM_OP_PREAD;
736 flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
740 memset(&rqd, 0, sizeof(struct nvm_rq));
742 rqd.meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
747 rqd.ppa_list = rqd.meta_list + pblk_dma_meta_size;
748 rqd.dma_ppa_list = rqd.dma_meta_list + pblk_dma_meta_size;
750 bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
756 bio->bi_iter.bi_sector = 0; /* internal bio */
757 bio_set_op_attrs(bio, bio_op, 0);
762 rqd.nr_ppas = lm->smeta_sec;
763 rqd.end_io = pblk_end_io_sync;
766 for (i = 0; i < lm->smeta_sec; i++, paddr++) {
767 struct pblk_sec_meta *meta_list = rqd.meta_list;
769 rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
772 u64 addr_empty = cpu_to_le64(ADDR_EMPTY);
774 meta_list[i].lba = lba_list[paddr] = addr_empty;
779 * This I/O is sent by the write thread when a line is replace. Since
780 * the write thread is the only one sending write and erase commands,
781 * there is no need to take the LUN semaphore.
783 ret = pblk_submit_io(pblk, &rqd);
785 pr_err("pblk: smeta I/O submission failed: %d\n", ret);
790 if (!wait_for_completion_io_timeout(&wait,
791 msecs_to_jiffies(PBLK_COMMAND_TIMEOUT_MS))) {
792 pr_err("pblk: smeta I/O timed out\n");
797 pblk_log_write_err(pblk, &rqd);
799 pblk_log_read_err(pblk, &rqd);
803 nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
808 int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line)
810 u64 bpaddr = pblk_line_smeta_start(pblk, line);
812 return pblk_line_submit_smeta_io(pblk, line, bpaddr, READ);
815 int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line,
818 return pblk_line_submit_emeta_io(pblk, line, emeta_buf,
819 line->emeta_ssec, READ);
822 static void pblk_setup_e_rq(struct pblk *pblk, struct nvm_rq *rqd,
825 rqd->opcode = NVM_OP_ERASE;
828 rqd->flags = pblk_set_progr_mode(pblk, ERASE);
832 static int pblk_blk_erase_sync(struct pblk *pblk, struct ppa_addr ppa)
836 DECLARE_COMPLETION_ONSTACK(wait);
838 memset(&rqd, 0, sizeof(struct nvm_rq));
840 pblk_setup_e_rq(pblk, &rqd, ppa);
842 rqd.end_io = pblk_end_io_sync;
845 /* The write thread schedules erases so that it minimizes disturbances
846 * with writes. Thus, there is no need to take the LUN semaphore.
848 ret = pblk_submit_io(pblk, &rqd);
850 struct nvm_tgt_dev *dev = pblk->dev;
851 struct nvm_geo *geo = &dev->geo;
853 pr_err("pblk: could not sync erase line:%d,blk:%d\n",
854 pblk_dev_ppa_to_line(ppa),
855 pblk_dev_ppa_to_pos(geo, ppa));
861 if (!wait_for_completion_io_timeout(&wait,
862 msecs_to_jiffies(PBLK_COMMAND_TIMEOUT_MS))) {
863 pr_err("pblk: sync erase timed out\n");
868 __pblk_end_io_erase(pblk, &rqd);
873 int pblk_line_erase(struct pblk *pblk, struct pblk_line *line)
875 struct pblk_line_meta *lm = &pblk->lm;
879 /* Erase only good blocks, one at a time */
881 spin_lock(&line->lock);
882 bit = find_next_zero_bit(line->erase_bitmap, lm->blk_per_line,
884 if (bit >= lm->blk_per_line) {
885 spin_unlock(&line->lock);
889 ppa = pblk->luns[bit].bppa; /* set ch and lun */
890 ppa.g.blk = line->id;
892 atomic_dec(&line->left_eblks);
893 WARN_ON(test_and_set_bit(bit, line->erase_bitmap));
894 spin_unlock(&line->lock);
896 if (pblk_blk_erase_sync(pblk, ppa)) {
897 pr_err("pblk: failed to erase line %d\n", line->id);
905 static void pblk_line_setup_metadata(struct pblk_line *line,
906 struct pblk_line_mgmt *l_mg,
907 struct pblk_line_meta *lm)
912 meta_line = find_first_zero_bit(&l_mg->meta_bitmap, PBLK_DATA_LINES);
913 if (meta_line == PBLK_DATA_LINES) {
914 spin_unlock(&l_mg->free_lock);
916 spin_lock(&l_mg->free_lock);
920 set_bit(meta_line, &l_mg->meta_bitmap);
921 line->meta_line = meta_line;
923 line->smeta = l_mg->sline_meta[meta_line];
924 line->emeta = l_mg->eline_meta[meta_line];
926 memset(line->smeta, 0, lm->smeta_len);
927 memset(line->emeta->buf, 0, lm->emeta_len[0]);
929 line->emeta->mem = 0;
930 atomic_set(&line->emeta->sync, 0);
933 /* For now lines are always assumed full lines. Thus, smeta former and current
934 * lun bitmaps are omitted.
936 static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
937 struct pblk_line *cur)
939 struct nvm_tgt_dev *dev = pblk->dev;
940 struct nvm_geo *geo = &dev->geo;
941 struct pblk_line_meta *lm = &pblk->lm;
942 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
943 struct pblk_emeta *emeta = line->emeta;
944 struct line_emeta *emeta_buf = emeta->buf;
945 struct line_smeta *smeta_buf = (struct line_smeta *)line->smeta;
948 /* After erasing the line, new bad blocks might appear and we risk
949 * having an invalid line
951 nr_blk_line = lm->blk_per_line -
952 bitmap_weight(line->blk_bitmap, lm->blk_per_line);
953 if (nr_blk_line < lm->min_blk_line) {
954 spin_lock(&l_mg->free_lock);
955 spin_lock(&line->lock);
956 line->state = PBLK_LINESTATE_BAD;
957 spin_unlock(&line->lock);
959 list_add_tail(&line->list, &l_mg->bad_list);
960 spin_unlock(&l_mg->free_lock);
962 pr_debug("pblk: line %d is bad\n", line->id);
967 /* Run-time metadata */
968 line->lun_bitmap = ((void *)(smeta_buf)) + sizeof(struct line_smeta);
970 /* Mark LUNs allocated in this line (all for now) */
971 bitmap_set(line->lun_bitmap, 0, lm->lun_bitmap_len);
973 smeta_buf->header.identifier = cpu_to_le32(PBLK_MAGIC);
974 memcpy(smeta_buf->header.uuid, pblk->instance_uuid, 16);
975 smeta_buf->header.id = cpu_to_le32(line->id);
976 smeta_buf->header.type = cpu_to_le16(line->type);
977 smeta_buf->header.version = cpu_to_le16(1);
980 smeta_buf->seq_nr = cpu_to_le64(line->seq_nr);
981 smeta_buf->window_wr_lun = cpu_to_le32(geo->nr_luns);
983 /* Fill metadata among lines */
985 memcpy(line->lun_bitmap, cur->lun_bitmap, lm->lun_bitmap_len);
986 smeta_buf->prev_id = cpu_to_le32(cur->id);
987 cur->emeta->buf->next_id = cpu_to_le32(line->id);
989 smeta_buf->prev_id = cpu_to_le32(PBLK_LINE_EMPTY);
992 /* All smeta must be set at this point */
993 smeta_buf->header.crc = cpu_to_le32(
994 pblk_calc_meta_header_crc(pblk, &smeta_buf->header));
995 smeta_buf->crc = cpu_to_le32(pblk_calc_smeta_crc(pblk, smeta_buf));
998 memcpy(&emeta_buf->header, &smeta_buf->header,
999 sizeof(struct line_header));
1000 emeta_buf->seq_nr = cpu_to_le64(line->seq_nr);
1001 emeta_buf->nr_lbas = cpu_to_le64(line->sec_in_line);
1002 emeta_buf->nr_valid_lbas = cpu_to_le64(0);
1003 emeta_buf->next_id = cpu_to_le32(PBLK_LINE_EMPTY);
1004 emeta_buf->crc = cpu_to_le32(0);
1005 emeta_buf->prev_id = smeta_buf->prev_id;
1010 /* For now lines are always assumed full lines. Thus, smeta former and current
1011 * lun bitmaps are omitted.
1013 static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
1016 struct nvm_tgt_dev *dev = pblk->dev;
1017 struct nvm_geo *geo = &dev->geo;
1018 struct pblk_line_meta *lm = &pblk->lm;
1019 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1024 line->sec_in_line = lm->sec_per_line;
1026 /* Capture bad block information on line mapping bitmaps */
1027 while ((bit = find_next_bit(line->blk_bitmap, lm->blk_per_line,
1028 bit + 1)) < lm->blk_per_line) {
1029 off = bit * geo->sec_per_pl;
1030 bitmap_shift_left(l_mg->bb_aux, l_mg->bb_template, off,
1032 bitmap_or(line->map_bitmap, line->map_bitmap, l_mg->bb_aux,
1034 line->sec_in_line -= geo->sec_per_blk;
1035 if (bit >= lm->emeta_bb)
1039 /* Mark smeta metadata sectors as bad sectors */
1040 bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
1041 off = bit * geo->sec_per_pl;
1043 bitmap_set(line->map_bitmap, off, lm->smeta_sec);
1044 line->sec_in_line -= lm->smeta_sec;
1045 line->smeta_ssec = off;
1046 line->cur_sec = off + lm->smeta_sec;
1048 if (init && pblk_line_submit_smeta_io(pblk, line, off, WRITE)) {
1049 pr_debug("pblk: line smeta I/O failed. Retry\n");
1050 off += geo->sec_per_pl;
1054 bitmap_copy(line->invalid_bitmap, line->map_bitmap, lm->sec_per_line);
1056 /* Mark emeta metadata sectors as bad sectors. We need to consider bad
1057 * blocks to make sure that there are enough sectors to store emeta
1059 bit = lm->sec_per_line;
1060 off = lm->sec_per_line - lm->emeta_sec[0];
1061 bitmap_set(line->invalid_bitmap, off, lm->emeta_sec[0]);
1063 off -= geo->sec_per_pl;
1064 if (!test_bit(off, line->invalid_bitmap)) {
1065 bitmap_set(line->invalid_bitmap, off, geo->sec_per_pl);
1070 line->sec_in_line -= lm->emeta_sec[0];
1071 line->emeta_ssec = off;
1072 line->nr_valid_lbas = 0;
1073 line->left_msecs = line->sec_in_line;
1074 *line->vsc = cpu_to_le32(line->sec_in_line);
1076 if (lm->sec_per_line - line->sec_in_line !=
1077 bitmap_weight(line->invalid_bitmap, lm->sec_per_line)) {
1078 spin_lock(&line->lock);
1079 line->state = PBLK_LINESTATE_BAD;
1080 spin_unlock(&line->lock);
1082 list_add_tail(&line->list, &l_mg->bad_list);
1083 pr_err("pblk: unexpected line %d is bad\n", line->id);
1091 static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
1093 struct pblk_line_meta *lm = &pblk->lm;
1094 int blk_in_line = atomic_read(&line->blk_in_line);
1096 line->map_bitmap = mempool_alloc(pblk->line_meta_pool, GFP_ATOMIC);
1097 if (!line->map_bitmap)
1099 memset(line->map_bitmap, 0, lm->sec_bitmap_len);
1101 /* invalid_bitmap is special since it is used when line is closed. No
1102 * need to zeroized; it will be initialized using bb info form
1105 line->invalid_bitmap = mempool_alloc(pblk->line_meta_pool, GFP_ATOMIC);
1106 if (!line->invalid_bitmap) {
1107 mempool_free(line->map_bitmap, pblk->line_meta_pool);
1111 spin_lock(&line->lock);
1112 if (line->state != PBLK_LINESTATE_FREE) {
1113 spin_unlock(&line->lock);
1114 WARN(1, "pblk: corrupted line state\n");
1117 line->state = PBLK_LINESTATE_OPEN;
1119 atomic_set(&line->left_eblks, blk_in_line);
1120 atomic_set(&line->left_seblks, blk_in_line);
1122 line->meta_distance = lm->meta_distance;
1123 spin_unlock(&line->lock);
1125 /* Bad blocks do not need to be erased */
1126 bitmap_copy(line->erase_bitmap, line->blk_bitmap, lm->blk_per_line);
1128 kref_init(&line->ref);
1133 int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line)
1135 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1138 spin_lock(&l_mg->free_lock);
1139 l_mg->data_line = line;
1140 list_del(&line->list);
1142 ret = pblk_line_prepare(pblk, line);
1144 list_add(&line->list, &l_mg->free_list);
1145 spin_unlock(&l_mg->free_lock);
1148 spin_unlock(&l_mg->free_lock);
1150 pblk_rl_free_lines_dec(&pblk->rl, line);
1152 if (!pblk_line_init_bb(pblk, line, 0)) {
1153 list_add(&line->list, &l_mg->free_list);
1160 void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line)
1162 mempool_free(line->map_bitmap, pblk->line_meta_pool);
1163 line->map_bitmap = NULL;
1168 struct pblk_line *pblk_line_get(struct pblk *pblk)
1170 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1171 struct pblk_line_meta *lm = &pblk->lm;
1172 struct pblk_line *line = NULL;
1175 lockdep_assert_held(&l_mg->free_lock);
1178 if (list_empty(&l_mg->free_list)) {
1179 pr_err("pblk: no free lines\n");
1183 line = list_first_entry(&l_mg->free_list, struct pblk_line, list);
1184 list_del(&line->list);
1185 l_mg->nr_free_lines--;
1187 bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
1188 if (unlikely(bit >= lm->blk_per_line)) {
1189 spin_lock(&line->lock);
1190 line->state = PBLK_LINESTATE_BAD;
1191 spin_unlock(&line->lock);
1193 list_add_tail(&line->list, &l_mg->bad_list);
1195 pr_debug("pblk: line %d is bad\n", line->id);
1199 if (pblk_line_prepare(pblk, line)) {
1200 pr_err("pblk: failed to prepare line %d\n", line->id);
1201 list_add(&line->list, &l_mg->free_list);
1209 static struct pblk_line *pblk_line_retry(struct pblk *pblk,
1210 struct pblk_line *line)
1212 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1213 struct pblk_line *retry_line;
1215 spin_lock(&l_mg->free_lock);
1216 retry_line = pblk_line_get(pblk);
1218 l_mg->data_line = NULL;
1219 spin_unlock(&l_mg->free_lock);
1223 retry_line->smeta = line->smeta;
1224 retry_line->emeta = line->emeta;
1225 retry_line->meta_line = line->meta_line;
1227 pblk_line_free(pblk, line);
1228 l_mg->data_line = retry_line;
1229 spin_unlock(&l_mg->free_lock);
1231 if (pblk_line_erase(pblk, retry_line)) {
1232 spin_lock(&l_mg->free_lock);
1233 l_mg->data_line = NULL;
1234 spin_unlock(&l_mg->free_lock);
1238 pblk_rl_free_lines_dec(&pblk->rl, retry_line);
1243 struct pblk_line *pblk_line_get_first_data(struct pblk *pblk)
1245 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1246 struct pblk_line *line;
1249 spin_lock(&l_mg->free_lock);
1250 line = pblk_line_get(pblk);
1252 spin_unlock(&l_mg->free_lock);
1256 line->seq_nr = l_mg->d_seq_nr++;
1257 line->type = PBLK_LINETYPE_DATA;
1258 l_mg->data_line = line;
1260 pblk_line_setup_metadata(line, l_mg, &pblk->lm);
1262 /* Allocate next line for preparation */
1263 l_mg->data_next = pblk_line_get(pblk);
1264 if (l_mg->data_next) {
1265 l_mg->data_next->seq_nr = l_mg->d_seq_nr++;
1266 l_mg->data_next->type = PBLK_LINETYPE_DATA;
1269 spin_unlock(&l_mg->free_lock);
1271 pblk_rl_free_lines_dec(&pblk->rl, line);
1273 pblk_rl_free_lines_dec(&pblk->rl, l_mg->data_next);
1275 if (pblk_line_erase(pblk, line))
1279 if (!pblk_line_init_metadata(pblk, line, NULL)) {
1280 line = pblk_line_retry(pblk, line);
1287 if (!pblk_line_init_bb(pblk, line, 1)) {
1288 line = pblk_line_retry(pblk, line);
1298 struct pblk_line *pblk_line_replace_data(struct pblk *pblk)
1300 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1301 struct pblk_line *cur, *new;
1302 unsigned int left_seblks;
1305 cur = l_mg->data_line;
1306 new = l_mg->data_next;
1309 l_mg->data_line = new;
1312 left_seblks = atomic_read(&new->left_seblks);
1314 /* If line is not fully erased, erase it */
1315 if (atomic_read(&new->left_eblks)) {
1316 if (pblk_line_erase(pblk, new))
1324 spin_lock(&l_mg->free_lock);
1325 /* Allocate next line for preparation */
1326 l_mg->data_next = pblk_line_get(pblk);
1327 if (l_mg->data_next) {
1328 l_mg->data_next->seq_nr = l_mg->d_seq_nr++;
1329 l_mg->data_next->type = PBLK_LINETYPE_DATA;
1333 pblk_line_setup_metadata(new, l_mg, &pblk->lm);
1334 spin_unlock(&l_mg->free_lock);
1337 pblk_rl_free_lines_dec(&pblk->rl, l_mg->data_next);
1340 if (!pblk_line_init_metadata(pblk, new, cur)) {
1341 new = pblk_line_retry(pblk, new);
1348 if (!pblk_line_init_bb(pblk, new, 1)) {
1349 new = pblk_line_retry(pblk, new);
1359 void pblk_line_free(struct pblk *pblk, struct pblk_line *line)
1361 if (line->map_bitmap)
1362 mempool_free(line->map_bitmap, pblk->line_meta_pool);
1363 if (line->invalid_bitmap)
1364 mempool_free(line->invalid_bitmap, pblk->line_meta_pool);
1366 *line->vsc = cpu_to_le32(EMPTY_ENTRY);
1368 line->map_bitmap = NULL;
1369 line->invalid_bitmap = NULL;
1374 void pblk_line_put(struct kref *ref)
1376 struct pblk_line *line = container_of(ref, struct pblk_line, ref);
1377 struct pblk *pblk = line->pblk;
1378 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1380 spin_lock(&line->lock);
1381 WARN_ON(line->state != PBLK_LINESTATE_GC);
1382 line->state = PBLK_LINESTATE_FREE;
1383 line->gc_group = PBLK_LINEGC_NONE;
1384 pblk_line_free(pblk, line);
1385 spin_unlock(&line->lock);
1387 spin_lock(&l_mg->free_lock);
1388 list_add_tail(&line->list, &l_mg->free_list);
1389 l_mg->nr_free_lines++;
1390 spin_unlock(&l_mg->free_lock);
1392 pblk_rl_free_lines_inc(&pblk->rl, line);
1395 int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
1400 rqd = mempool_alloc(pblk->g_rq_pool, GFP_KERNEL);
1401 memset(rqd, 0, pblk_g_rq_size);
1403 pblk_setup_e_rq(pblk, rqd, ppa);
1405 rqd->end_io = pblk_end_io_erase;
1406 rqd->private = pblk;
1408 /* The write thread schedules erases so that it minimizes disturbances
1409 * with writes. Thus, there is no need to take the LUN semaphore.
1411 err = pblk_submit_io(pblk, rqd);
1413 struct nvm_tgt_dev *dev = pblk->dev;
1414 struct nvm_geo *geo = &dev->geo;
1416 pr_err("pblk: could not async erase line:%d,blk:%d\n",
1417 pblk_dev_ppa_to_line(ppa),
1418 pblk_dev_ppa_to_pos(geo, ppa));
1424 struct pblk_line *pblk_line_get_data(struct pblk *pblk)
1426 return pblk->l_mg.data_line;
1429 /* For now, always erase next line */
1430 struct pblk_line *pblk_line_get_erase(struct pblk *pblk)
1432 return pblk->l_mg.data_next;
1435 int pblk_line_is_full(struct pblk_line *line)
1437 return (line->left_msecs == 0);
1440 void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
1442 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1443 struct pblk_line_meta *lm = &pblk->lm;
1444 struct list_head *move_list;
1446 WARN(!bitmap_full(line->map_bitmap, lm->sec_per_line),
1447 "pblk: corrupt closed line %d\n", line->id);
1449 spin_lock(&l_mg->free_lock);
1450 WARN_ON(!test_and_clear_bit(line->meta_line, &l_mg->meta_bitmap));
1451 spin_unlock(&l_mg->free_lock);
1453 spin_lock(&l_mg->gc_lock);
1454 spin_lock(&line->lock);
1455 WARN_ON(line->state != PBLK_LINESTATE_OPEN);
1456 line->state = PBLK_LINESTATE_CLOSED;
1457 move_list = pblk_line_gc_list(pblk, line);
1459 list_add_tail(&line->list, move_list);
1461 mempool_free(line->map_bitmap, pblk->line_meta_pool);
1462 line->map_bitmap = NULL;
1466 spin_unlock(&line->lock);
1467 spin_unlock(&l_mg->gc_lock);
1470 void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
1472 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
1473 struct pblk_line_meta *lm = &pblk->lm;
1474 struct pblk_emeta *emeta = line->emeta;
1475 struct line_emeta *emeta_buf = emeta->buf;
1477 /* No need for exact vsc value; avoid a big line lock and tak aprox. */
1478 memcpy(emeta_to_vsc(pblk, emeta_buf), l_mg->vsc_list, lm->vsc_list_len);
1479 memcpy(emeta_to_bb(emeta_buf), line->blk_bitmap, lm->blk_bitmap_len);
1481 emeta_buf->nr_valid_lbas = cpu_to_le64(line->nr_valid_lbas);
1482 emeta_buf->crc = cpu_to_le32(pblk_calc_emeta_crc(pblk, emeta_buf));
1484 spin_lock(&l_mg->close_lock);
1485 spin_lock(&line->lock);
1486 list_add_tail(&line->list, &l_mg->emeta_list);
1487 spin_unlock(&line->lock);
1488 spin_unlock(&l_mg->close_lock);
1491 void pblk_line_close_ws(struct work_struct *work)
1493 struct pblk_line_ws *line_ws = container_of(work, struct pblk_line_ws,
1495 struct pblk *pblk = line_ws->pblk;
1496 struct pblk_line *line = line_ws->line;
1498 pblk_line_close(pblk, line);
1499 mempool_free(line_ws, pblk->line_ws_pool);
1502 void pblk_line_mark_bb(struct work_struct *work)
1504 struct pblk_line_ws *line_ws = container_of(work, struct pblk_line_ws,
1506 struct pblk *pblk = line_ws->pblk;
1507 struct nvm_tgt_dev *dev = pblk->dev;
1508 struct ppa_addr *ppa = line_ws->priv;
1511 ret = nvm_set_tgt_bb_tbl(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
1513 struct pblk_line *line;
1516 line = &pblk->lines[pblk_dev_ppa_to_line(*ppa)];
1517 pos = pblk_dev_ppa_to_pos(&dev->geo, *ppa);
1519 pr_err("pblk: failed to mark bb, line:%d, pos:%d\n",
1524 mempool_free(line_ws, pblk->line_ws_pool);
1527 void pblk_line_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv,
1528 void (*work)(struct work_struct *))
1530 struct pblk_line_ws *line_ws;
1532 line_ws = mempool_alloc(pblk->line_ws_pool, GFP_ATOMIC);
1536 line_ws->pblk = pblk;
1537 line_ws->line = line;
1538 line_ws->priv = priv;
1540 INIT_WORK(&line_ws->ws, work);
1541 queue_work(pblk->kw_wq, &line_ws->ws);
1544 void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
1545 unsigned long *lun_bitmap)
1547 struct nvm_tgt_dev *dev = pblk->dev;
1548 struct nvm_geo *geo = &dev->geo;
1549 struct pblk_lun *rlun;
1550 int pos = pblk_ppa_to_pos(geo, ppa_list[0]);
1554 * Only send one inflight I/O per LUN. Since we map at a page
1555 * granurality, all ppas in the I/O will map to the same LUN
1557 #ifdef CONFIG_NVM_DEBUG
1560 for (i = 1; i < nr_ppas; i++)
1561 WARN_ON(ppa_list[0].g.lun != ppa_list[i].g.lun ||
1562 ppa_list[0].g.ch != ppa_list[i].g.ch);
1564 /* If the LUN has been locked for this same request, do no attempt to
1567 if (test_and_set_bit(pos, lun_bitmap))
1570 rlun = &pblk->luns[pos];
1571 ret = down_timeout(&rlun->wr_sem, msecs_to_jiffies(5000));
1575 pr_err("pblk: lun semaphore timed out\n");
1578 pr_err("pblk: lun semaphore timed out\n");
1584 void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
1585 unsigned long *lun_bitmap)
1587 struct nvm_tgt_dev *dev = pblk->dev;
1588 struct nvm_geo *geo = &dev->geo;
1589 struct pblk_lun *rlun;
1590 int nr_luns = geo->nr_luns;
1593 while ((bit = find_next_bit(lun_bitmap, nr_luns, bit + 1)) < nr_luns) {
1594 rlun = &pblk->luns[bit];
1601 void pblk_update_map(struct pblk *pblk, sector_t lba, struct ppa_addr ppa)
1603 struct ppa_addr l2p_ppa;
1605 /* logic error: lba out-of-bounds. Ignore update */
1606 if (!(lba < pblk->rl.nr_secs)) {
1607 WARN(1, "pblk: corrupted L2P map request\n");
1611 spin_lock(&pblk->trans_lock);
1612 l2p_ppa = pblk_trans_map_get(pblk, lba);
1614 if (!pblk_addr_in_cache(l2p_ppa) && !pblk_ppa_empty(l2p_ppa))
1615 pblk_map_invalidate(pblk, l2p_ppa);
1617 pblk_trans_map_set(pblk, lba, ppa);
1618 spin_unlock(&pblk->trans_lock);
1621 void pblk_update_map_cache(struct pblk *pblk, sector_t lba, struct ppa_addr ppa)
1623 #ifdef CONFIG_NVM_DEBUG
1624 /* Callers must ensure that the ppa points to a cache address */
1625 BUG_ON(!pblk_addr_in_cache(ppa));
1626 BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa)));
1629 pblk_update_map(pblk, lba, ppa);
1632 int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa,
1633 struct pblk_line *gc_line)
1635 struct ppa_addr l2p_ppa;
1638 #ifdef CONFIG_NVM_DEBUG
1639 /* Callers must ensure that the ppa points to a cache address */
1640 BUG_ON(!pblk_addr_in_cache(ppa));
1641 BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa)));
1644 /* logic error: lba out-of-bounds. Ignore update */
1645 if (!(lba < pblk->rl.nr_secs)) {
1646 WARN(1, "pblk: corrupted L2P map request\n");
1650 spin_lock(&pblk->trans_lock);
1651 l2p_ppa = pblk_trans_map_get(pblk, lba);
1653 /* Prevent updated entries to be overwritten by GC */
1654 if (pblk_addr_in_cache(l2p_ppa) || pblk_ppa_empty(l2p_ppa) ||
1655 pblk_tgt_ppa_to_line(l2p_ppa) != gc_line->id) {
1660 pblk_trans_map_set(pblk, lba, ppa);
1662 spin_unlock(&pblk->trans_lock);
1666 void pblk_update_map_dev(struct pblk *pblk, sector_t lba, struct ppa_addr ppa,
1667 struct ppa_addr entry_line)
1669 struct ppa_addr l2p_line;
1671 #ifdef CONFIG_NVM_DEBUG
1672 /* Callers must ensure that the ppa points to a device address */
1673 BUG_ON(pblk_addr_in_cache(ppa));
1675 /* Invalidate and discard padded entries */
1676 if (lba == ADDR_EMPTY) {
1677 #ifdef CONFIG_NVM_DEBUG
1678 atomic_long_inc(&pblk->padded_wb);
1680 pblk_map_invalidate(pblk, ppa);
1684 /* logic error: lba out-of-bounds. Ignore update */
1685 if (!(lba < pblk->rl.nr_secs)) {
1686 WARN(1, "pblk: corrupted L2P map request\n");
1690 spin_lock(&pblk->trans_lock);
1691 l2p_line = pblk_trans_map_get(pblk, lba);
1693 /* Do not update L2P if the cacheline has been updated. In this case,
1694 * the mapped ppa must be invalidated
1696 if (l2p_line.ppa != entry_line.ppa) {
1697 if (!pblk_ppa_empty(ppa))
1698 pblk_map_invalidate(pblk, ppa);
1702 #ifdef CONFIG_NVM_DEBUG
1703 WARN_ON(!pblk_addr_in_cache(l2p_line) && !pblk_ppa_empty(l2p_line));
1706 pblk_trans_map_set(pblk, lba, ppa);
1708 spin_unlock(&pblk->trans_lock);
1711 void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas,
1712 sector_t blba, int nr_secs)
1716 spin_lock(&pblk->trans_lock);
1717 for (i = 0; i < nr_secs; i++)
1718 ppas[i] = pblk_trans_map_get(pblk, blba + i);
1719 spin_unlock(&pblk->trans_lock);
1722 void pblk_lookup_l2p_rand(struct pblk *pblk, struct ppa_addr *ppas,
1723 u64 *lba_list, int nr_secs)
1728 spin_lock(&pblk->trans_lock);
1729 for (i = 0; i < nr_secs; i++) {
1731 if (lba == ADDR_EMPTY) {
1732 ppas[i].ppa = ADDR_EMPTY;
1734 /* logic error: lba out-of-bounds. Ignore update */
1735 if (!(lba < pblk->rl.nr_secs)) {
1736 WARN(1, "pblk: corrupted L2P map request\n");
1739 ppas[i] = pblk_trans_map_get(pblk, lba);
1742 spin_unlock(&pblk->trans_lock);