From patchwork Fri Oct 5 13:34:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Konopko X-Patchwork-Id: 10628175 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C2E9B1515 for ; Fri, 5 Oct 2018 13:38:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AF0EB28F83 for ; Fri, 5 Oct 2018 13:38:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A371E28FB0; Fri, 5 Oct 2018 13:38:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8BD7D29031 for ; Fri, 5 Oct 2018 13:38:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728745AbeJEUhA (ORCPT ); Fri, 5 Oct 2018 16:37:00 -0400 Received: from mga04.intel.com ([192.55.52.120]:4640 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728743AbeJEUhA (ORCPT ); Fri, 5 Oct 2018 16:37:00 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Oct 2018 06:38:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,344,1534834800"; d="scan'208";a="268738391" Received: from gklab-106-154.igk.intel.com ([10.102.106.154]) by fmsmga005.fm.intel.com with ESMTP; 05 Oct 2018 06:38:03 -0700 From: Igor Konopko To: mb@lightnvm.io, javier@cnexlabs.com Cc: linux-block@vger.kernel.org, marcin.dziegielewski@intel.com, igor.j.konopko@intel.com Subject: [PATCH 2/5] lightnvm: pblk: Helpers for OOB metadata Date: Fri, 5 Oct 2018 15:34:34 +0200 Message-Id: <20181005133437.25255-3-igor.j.konopko@intel.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20181005133437.25255-1-igor.j.konopko@intel.com> References: <20181005133437.25255-1-igor.j.konopko@intel.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently pblk assumes that size of OOB metadata on drive is always equal to size of pblk_sec_meta struct. This commit add helpers which will allow to handle different sizes of OOB metadata on drive. Signed-off-by: Igor Konopko --- drivers/lightnvm/pblk-core.c | 6 ++--- drivers/lightnvm/pblk-map.c | 21 ++++++++++------ drivers/lightnvm/pblk-read.c | 41 +++++++++++++++++++------------- drivers/lightnvm/pblk-recovery.c | 14 ++++++----- drivers/lightnvm/pblk.h | 37 +++++++++++++++++++++++++++- 5 files changed, 86 insertions(+), 33 deletions(-) diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index 6944aac43b01..7cb39d84c833 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -743,7 +743,6 @@ int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line) rqd.opcode = NVM_OP_PREAD; rqd.nr_ppas = lm->smeta_sec; rqd.is_seq = 1; - for (i = 0; i < lm->smeta_sec; i++, paddr++) rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id); @@ -796,10 +795,11 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line, rqd.is_seq = 1; for (i = 0; i < lm->smeta_sec; i++, paddr++) { - struct pblk_sec_meta *meta_list = rqd.meta_list; + void *meta_list = rqd.meta_list; rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id); - meta_list[i].lba = lba_list[paddr] = addr_empty; + pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY); + lba_list[paddr] = addr_empty; } ret = pblk_submit_io_sync_sem(pblk, &rqd); diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c index 6dcbd44e3acb..4c7a9909308e 100644 --- a/drivers/lightnvm/pblk-map.c +++ b/drivers/lightnvm/pblk-map.c @@ -22,7 +22,7 @@ static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry, struct ppa_addr *ppa_list, unsigned long *lun_bitmap, - struct pblk_sec_meta *meta_list, + void *meta_list, unsigned int valid_secs) { struct pblk_line *line = pblk_line_get_data(pblk); @@ -68,14 +68,15 @@ static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry, kref_get(&line->ref); w_ctx = pblk_rb_w_ctx(&pblk->rwb, sentry + i); w_ctx->ppa = ppa_list[i]; - meta_list[i].lba = cpu_to_le64(w_ctx->lba); + pblk_set_meta_lba(pblk, meta_list, i, w_ctx->lba); lba_list[paddr] = cpu_to_le64(w_ctx->lba); if (lba_list[paddr] != addr_empty) line->nr_valid_lbas++; else atomic64_inc(&pblk->pad_wa); } else { - lba_list[paddr] = meta_list[i].lba = addr_empty; + lba_list[paddr] = addr_empty; + pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY); __pblk_map_invalidate(pblk, line, paddr); } } @@ -88,7 +89,7 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry, unsigned long *lun_bitmap, unsigned int valid_secs, unsigned int off) { - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd); unsigned int map_secs; int min = pblk->min_write_pgs; @@ -97,7 +98,10 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry, for (i = off; i < rqd->nr_ppas; i += min) { map_secs = (i + min > valid_secs) ? (valid_secs % min) : min; if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i], - lun_bitmap, &meta_list[i], map_secs)) { + lun_bitmap, + pblk_get_meta_buffer(pblk, + meta_list, i), + map_secs)) { bio_put(rqd->bio); pblk_free_rqd(pblk, rqd, PBLK_WRITE); pblk_pipeline_stop(pblk); @@ -113,7 +117,7 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd, struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; struct pblk_line_meta *lm = &pblk->lm; - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd); struct pblk_line *e_line, *d_line; unsigned int map_secs; @@ -123,7 +127,10 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd, for (i = 0; i < rqd->nr_ppas; i += min) { map_secs = (i + min > valid_secs) ? (valid_secs % min) : min; if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i], - lun_bitmap, &meta_list[i], map_secs)) { + lun_bitmap, + pblk_get_meta_buffer(pblk, + meta_list, i), + map_secs)) { bio_put(rqd->bio); pblk_free_rqd(pblk, rqd, PBLK_WRITE); pblk_pipeline_stop(pblk); diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index 08f6ebd4bc48..6584a2588f61 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -43,7 +43,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio, sector_t blba, unsigned long *read_bitmap) { - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; struct ppa_addr ppas[NVM_MAX_VLBA]; int nr_secs = rqd->nr_ppas; bool advanced_bio = false; @@ -58,7 +58,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd, retry: if (pblk_ppa_empty(p)) { WARN_ON(test_and_set_bit(i, read_bitmap)); - meta_list[i].lba = cpu_to_le64(ADDR_EMPTY); + pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY); if (unlikely(!advanced_bio)) { bio_advance(bio, (i) * PBLK_EXPOSED_PAGE_SIZE); @@ -78,7 +78,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd, goto retry; } WARN_ON(test_and_set_bit(i, read_bitmap)); - meta_list[i].lba = cpu_to_le64(lba); + pblk_set_meta_lba(pblk, meta_list, i, lba); advanced_bio = true; #ifdef CONFIG_NVM_PBLK_DEBUG atomic_long_inc(&pblk->cache_reads); @@ -105,12 +105,15 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd, static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd, sector_t blba) { - struct pblk_sec_meta *meta_lba_list = rqd->meta_list; + void *meta_list = rqd->meta_list; int nr_lbas = rqd->nr_ppas; int i; + if (!pblk_is_oob_meta_supported(pblk)) + return; + for (i = 0; i < nr_lbas; i++) { - u64 lba = le64_to_cpu(meta_lba_list[i].lba); + u64 lba = pblk_get_meta_lba(pblk, meta_list, i); if (lba == ADDR_EMPTY) continue; @@ -134,9 +137,12 @@ static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd, static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd, u64 *lba_list, int nr_lbas) { - struct pblk_sec_meta *meta_lba_list = rqd->meta_list; + void *meta_lba_list = rqd->meta_list; int i, j; + if (!pblk_is_oob_meta_supported(pblk)) + return; + for (i = 0, j = 0; i < nr_lbas; i++) { u64 lba = lba_list[i]; u64 meta_lba; @@ -144,7 +150,7 @@ static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd, if (lba == ADDR_EMPTY) continue; - meta_lba = le64_to_cpu(meta_lba_list[j].lba); + meta_lba = pblk_get_meta_lba(pblk, meta_lba_list, j); if (lba != meta_lba) { #ifdef CONFIG_NVM_PBLK_DEBUG @@ -219,7 +225,7 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) struct bio *new_bio = rqd->bio; struct bio *bio = pr_ctx->orig_bio; struct bio_vec src_bv, dst_bv; - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; int bio_init_idx = pr_ctx->bio_init_idx; unsigned long *read_bitmap = pr_ctx->bitmap; int nr_secs = pr_ctx->orig_nr_secs; @@ -237,8 +243,10 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) } for (i = 0; i < nr_secs; i++) { - pr_ctx->lba_list_media[i] = meta_list[i].lba; - meta_list[i].lba = pr_ctx->lba_list_mem[i]; + pr_ctx->lba_list_media[i] = pblk_get_meta_lba(pblk, + meta_list, i); + pblk_set_meta_lba(pblk, meta_list, i, + pr_ctx->lba_list_mem[i]); } /* Fill the holes in the original bio */ @@ -250,7 +258,8 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) line = pblk_ppa_to_line(pblk, rqd->ppa_list[i]); kref_put(&line->ref, pblk_line_put); - meta_list[hole].lba = pr_ctx->lba_list_media[i]; + pblk_set_meta_lba(pblk, meta_list, hole, + pr_ctx->lba_list_media[i]); src_bv = new_bio->bi_io_vec[i++]; dst_bv = bio->bi_io_vec[bio_init_idx + hole]; @@ -286,7 +295,7 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd, unsigned long *read_bitmap, int nr_holes) { - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd); struct pblk_pr_ctx *pr_ctx; struct bio *new_bio, *bio = r_ctx->private; @@ -308,7 +317,7 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd, goto fail_free_pages; for (i = 0; i < nr_secs; i++) - pr_ctx->lba_list_mem[i] = meta_list[i].lba; + pr_ctx->lba_list_mem[i] = pblk_get_meta_lba(pblk, meta_list, i); new_bio->bi_iter.bi_sector = 0; /* internal bio */ bio_set_op_attrs(new_bio, REQ_OP_READ, 0); @@ -373,7 +382,7 @@ static int pblk_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd, static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio, sector_t lba, unsigned long *read_bitmap) { - struct pblk_sec_meta *meta_list = rqd->meta_list; + void *meta_list = rqd->meta_list; struct ppa_addr ppa; pblk_lookup_l2p_seq(pblk, &ppa, lba, 1); @@ -385,7 +394,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio, retry: if (pblk_ppa_empty(ppa)) { WARN_ON(test_and_set_bit(0, read_bitmap)); - meta_list[0].lba = cpu_to_le64(ADDR_EMPTY); + pblk_set_meta_lba(pblk, meta_list, 0, ADDR_EMPTY); return; } @@ -399,7 +408,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio, } WARN_ON(test_and_set_bit(0, read_bitmap)); - meta_list[0].lba = cpu_to_le64(lba); + pblk_set_meta_lba(pblk, meta_list, 0, lba); #ifdef CONFIG_NVM_PBLK_DEBUG atomic_long_inc(&pblk->cache_reads); diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c index 5740b7509bd8..fa63f9fa5ba8 100644 --- a/drivers/lightnvm/pblk-recovery.c +++ b/drivers/lightnvm/pblk-recovery.c @@ -124,7 +124,7 @@ static u64 pblk_sec_in_open_line(struct pblk *pblk, struct pblk_line *line) struct pblk_recov_alloc { struct ppa_addr *ppa_list; - struct pblk_sec_meta *meta_list; + void *meta_list; struct nvm_rq *rqd; void *data; dma_addr_t dma_ppa_list; @@ -158,7 +158,7 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line, { struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; - struct pblk_sec_meta *meta_list; + void *meta_list; struct pblk_pad_rq *pad_rq; struct nvm_rq *rqd; struct bio *bio; @@ -242,7 +242,8 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line, dev_ppa = addr_to_gen_ppa(pblk, w_ptr, line->id); pblk_map_invalidate(pblk, dev_ppa); - lba_list[w_ptr] = meta_list[i].lba = addr_empty; + lba_list[w_ptr] = addr_empty; + pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY); rqd->ppa_list[i] = dev_ppa; } } @@ -325,6 +326,7 @@ static int pblk_line_wp_is_unbalanced(struct pblk *pblk, return 1; else if (chunk->wp < line_wp) line_wp = chunk->wp; + } return 0; @@ -336,7 +338,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line, struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; struct ppa_addr *ppa_list; - struct pblk_sec_meta *meta_list; + void *meta_list; struct nvm_rq *rqd; struct bio *bio; void *data; @@ -434,7 +436,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line, } for (i = 0; i < rqd->nr_ppas; i++) { - u64 lba = le64_to_cpu(meta_list[i].lba); + u64 lba = pblk_get_meta_lba(pblk, meta_list, i); lba_list[paddr++] = cpu_to_le64(lba); @@ -463,7 +465,7 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line) struct nvm_geo *geo = &dev->geo; struct nvm_rq *rqd; struct ppa_addr *ppa_list; - struct pblk_sec_meta *meta_list; + void *meta_list; struct pblk_recov_alloc p; void *data; dma_addr_t dma_ppa_list, dma_meta_list; diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index aea09879636f..53156b6f99a3 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -87,7 +87,6 @@ enum { }; struct pblk_sec_meta { - u64 reserved; __le64 lba; }; @@ -1366,4 +1365,40 @@ static inline char *pblk_disk_name(struct pblk *pblk) return disk->disk_name; } + +static inline int pblk_is_oob_meta_supported(struct pblk *pblk) +{ + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + + /* Pblk uses OOB meta to store LBA of given physical sector. + * The LBA is eventually used in recovery mode and/or for handling + * telemetry events (e.g., relocate sector). + */ + + return (geo->sos >= sizeof(struct pblk_sec_meta)); +} + +static inline struct pblk_sec_meta *pblk_get_meta_buffer(struct pblk *pblk, + void *meta_ptr, + int index) +{ + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + + return meta_ptr + max_t(int, geo->sos, sizeof(struct pblk_sec_meta)) + * index; +} + +static inline void pblk_set_meta_lba(struct pblk *pblk, void *meta_ptr, + int index, u64 lba) +{ + pblk_get_meta_buffer(pblk, meta_ptr, index)->lba = cpu_to_le64(lba); +} + +static inline u64 pblk_get_meta_lba(struct pblk *pblk, void *meta_ptr, + int index) +{ + return le64_to_cpu(pblk_get_meta_buffer(pblk, meta_ptr, index)->lba); +} #endif /* PBLK_H_ */