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[193.106.164.211]) by smtp.gmail.com with ESMTPSA id g59sm7097451ede.19.2018.02.26.05.17.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 26 Feb 2018 05:17:49 -0800 (PST) From: "=?UTF-8?q?Javier=20Gonz=C3=A1lez?=" X-Google-Original-From: =?UTF-8?q?Javier=20Gonz=C3=A1lez?= To: mb@lightnvm.io Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, =?UTF-8?q?Javier=20Gonz=C3=A1lez?= Subject: [PATCH 19/19] lightnvm: pblk: implement 2.0 support Date: Mon, 26 Feb 2018 14:17:18 +0100 Message-Id: <1519651038-16845-20-git-send-email-javier@cnexlabs.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1519651038-16845-1-git-send-email-javier@cnexlabs.com> References: <1519651038-16845-1-git-send-email-javier@cnexlabs.com> MIME-Version: 1.0 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 Implement 2.0 support in pblk. This includes the address formatting and mapping paths, as well as the sysfs entries for them. Signed-off-by: Javier González --- drivers/lightnvm/pblk-init.c | 57 ++++++++++-- drivers/lightnvm/pblk-sysfs.c | 36 ++++++-- drivers/lightnvm/pblk.h | 198 ++++++++++++++++++++++++++++++++---------- 3 files changed, 233 insertions(+), 58 deletions(-) diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index 7f88fb937440..fe04996cd3ba 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -231,20 +231,63 @@ static int pblk_set_addrf_12(struct nvm_geo *geo, return dst->blk_offset + src->blk_len; } +static int pblk_set_addrf_20(struct nvm_geo *geo, + struct nvm_addr_format *adst, + struct pblk_addr_format *udst) +{ + struct nvm_addr_format *src = &geo->c.addrf; + + adst->ch_len = get_count_order(geo->num_ch); + adst->lun_len = get_count_order(geo->num_lun); + adst->chk_len = src->chk_len; + adst->sec_len = src->sec_len; + + adst->sec_offset = 0; + adst->ch_offset = adst->sec_len; + adst->lun_offset = adst->ch_offset + adst->ch_len; + adst->chk_offset = adst->lun_offset + adst->lun_len; + + adst->sec_mask = ((1ULL << adst->sec_len) - 1) << adst->sec_offset; + adst->chk_mask = ((1ULL << adst->chk_len) - 1) << adst->chk_offset; + adst->lun_mask = ((1ULL << adst->lun_len) - 1) << adst->lun_offset; + adst->ch_mask = ((1ULL << adst->ch_len) - 1) << adst->ch_offset; + + udst->sec_stripe = geo->c.ws_opt; + udst->ch_stripe = geo->num_ch; + udst->lun_stripe = geo->num_lun; + + udst->sec_lun_stripe = udst->sec_stripe * udst->ch_stripe; + udst->sec_ws_stripe = udst->sec_lun_stripe * udst->lun_stripe; + + return adst->chk_offset + adst->chk_len; +} + static int pblk_set_addrf(struct pblk *pblk) { struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; int mod; - div_u64_rem(geo->c.clba, pblk->min_write_pgs, &mod); - if (mod) { - pr_err("pblk: bad configuration of sectors/pages\n"); + switch (geo->c.version) { + case NVM_OCSSD_SPEC_12: + div_u64_rem(geo->c.clba, pblk->min_write_pgs, &mod); + if (mod) { + pr_err("pblk: bad configuration of sectors/pages\n"); + return -EINVAL; + } + + pblk->addrf_len = pblk_set_addrf_12(geo, (void *)&pblk->addrf); + break; + case NVM_OCSSD_SPEC_20: + pblk->addrf_len = pblk_set_addrf_20(geo, (void *)&pblk->addrf, + &pblk->uaddrf); + break; + default: + pr_err("pblk: OCSSD revision not supported (%d)\n", + geo->c.version); return -EINVAL; } - pblk->addrf_len = pblk_set_addrf_12(geo, (void *)&pblk->addrf); - return 0; } @@ -1113,7 +1156,9 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk, struct pblk *pblk; int ret; - if (geo->c.version != NVM_OCSSD_SPEC_12) { + /* pblk supports 1.2 and 2.0 versions */ + if (!(geo->c.version == NVM_OCSSD_SPEC_12 || + geo->c.version == NVM_OCSSD_SPEC_20)) { pr_err("pblk: OCSSD version not supported (%u)\n", geo->c.version); return ERR_PTR(-EINVAL); diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c index 1ce5b956c622..42ec00e8d393 100644 --- a/drivers/lightnvm/pblk-sysfs.c +++ b/drivers/lightnvm/pblk-sysfs.c @@ -113,15 +113,16 @@ static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page) { struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; - struct nvm_addr_format_12 *ppaf; - struct nvm_addr_format_12 *geo_ppaf; ssize_t sz = 0; - ppaf = (struct nvm_addr_format_12 *)&pblk->addrf; - geo_ppaf = (struct nvm_addr_format_12 *)&geo->c.addrf; + if (geo->c.version == NVM_OCSSD_SPEC_12) { + struct nvm_addr_format_12 *ppaf = + (struct nvm_addr_format_12 *)&pblk->addrf; + struct nvm_addr_format_12 *geo_ppaf = + (struct nvm_addr_format_12 *)&geo->c.addrf; - sz = snprintf(page, PAGE_SIZE, - "pblk:(s:%d)ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n", + sz = snprintf(page, PAGE_SIZE, + "pblk:(s:%d)ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n", pblk->addrf_len, ppaf->ch_offset, ppaf->ch_len, ppaf->lun_offset, ppaf->lun_len, @@ -130,14 +131,33 @@ static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page) ppaf->pln_offset, ppaf->pln_len, ppaf->sec_offset, ppaf->sec_len); - sz += snprintf(page + sz, PAGE_SIZE - sz, - "device:ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n", + sz += snprintf(page + sz, PAGE_SIZE - sz, + "device:ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n", geo_ppaf->ch_offset, geo_ppaf->ch_len, geo_ppaf->lun_offset, geo_ppaf->lun_len, geo_ppaf->blk_offset, geo_ppaf->blk_len, geo_ppaf->pg_offset, geo_ppaf->pg_len, geo_ppaf->pln_offset, geo_ppaf->pln_len, geo_ppaf->sec_offset, geo_ppaf->sec_len); + } else { + struct nvm_addr_format *ppaf = &pblk->addrf; + struct nvm_addr_format *geo_ppaf = &geo->c.addrf; + + sz = snprintf(page, PAGE_SIZE, + "pblk:(s:%d)ch:%d/%d,lun:%d/%d,chk:%d/%d/sec:%d/%d\n", + pblk->addrf_len, + ppaf->ch_offset, ppaf->ch_len, + ppaf->lun_offset, ppaf->lun_len, + ppaf->chk_offset, ppaf->chk_len, + ppaf->sec_offset, ppaf->sec_len); + + sz += snprintf(page + sz, PAGE_SIZE - sz, + "device:ch:%d/%d,lun:%d/%d,chk:%d/%d,sec:%d/%d\n", + geo_ppaf->ch_offset, geo_ppaf->ch_len, + geo_ppaf->lun_offset, geo_ppaf->lun_len, + geo_ppaf->chk_offset, geo_ppaf->chk_len, + geo_ppaf->sec_offset, geo_ppaf->sec_len); + } return sz; } diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index bc31c67b725f..d8f71a9371b1 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -574,6 +574,18 @@ enum { PBLK_STATE_STOPPED = 3, }; +/* Internal format to support not power-of-2 device formats (for now) */ +struct pblk_addr_format { + /* gen to dev */ + int sec_stripe; + int ch_stripe; + int lun_stripe; + + /* dev to gen */ + int sec_lun_stripe; + int sec_ws_stripe; +}; + struct pblk { struct nvm_tgt_dev *dev; struct gendisk *disk; @@ -586,7 +598,8 @@ struct pblk { struct pblk_line_mgmt l_mg; /* Line management */ struct pblk_line_meta lm; /* Line metadata */ - struct nvm_addr_format addrf; + struct nvm_addr_format addrf; /* Aligned address format */ + struct pblk_addr_format uaddrf; /* Unaligned address format */ int addrf_len; struct pblk_rb rwb; @@ -967,17 +980,43 @@ static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p) static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr, u64 line_id) { - struct nvm_addr_format_12 *ppaf = - (struct nvm_addr_format_12 *)&pblk->addrf; + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; struct ppa_addr ppa; - ppa.ppa = 0; - ppa.g.blk = line_id; - ppa.g.pg = (paddr & ppaf->pg_mask) >> ppaf->pg_offset; - ppa.g.lun = (paddr & ppaf->lun_mask) >> ppaf->lun_offset; - ppa.g.ch = (paddr & ppaf->ch_mask) >> ppaf->ch_offset; - ppa.g.pl = (paddr & ppaf->pln_mask) >> ppaf->pln_offset; - ppa.g.sec = (paddr & ppaf->sec_mask) >> ppaf->sec_offset; + if (geo->c.version == NVM_OCSSD_SPEC_12) { + struct nvm_addr_format_12 *ppaf = + (struct nvm_addr_format_12 *)&pblk->addrf; + + ppa.ppa = 0; + ppa.g.blk = line_id; + ppa.g.pg = (paddr & ppaf->pg_mask) >> ppaf->pg_offset; + ppa.g.lun = (paddr & ppaf->lun_mask) >> ppaf->lun_offset; + ppa.g.ch = (paddr & ppaf->ch_mask) >> ppaf->ch_offset; + ppa.g.pl = (paddr & ppaf->pln_mask) >> ppaf->pln_offset; + ppa.g.sec = (paddr & ppaf->sec_mask) >> ppaf->sec_offset; + } else { + struct pblk_addr_format *uaddrf = &pblk->uaddrf; + int secs, chnls, luns; + + ppa.ppa = 0; + + ppa.m.chk = line_id; + + div_u64_rem(paddr, uaddrf->sec_stripe, &secs); + ppa.m.sec = secs; + + sector_div(paddr, uaddrf->sec_stripe); + div_u64_rem(paddr, uaddrf->ch_stripe, &chnls); + ppa.m.grp = chnls; + + sector_div(paddr, uaddrf->ch_stripe); + div_u64_rem(paddr, uaddrf->lun_stripe, &luns); + ppa.m.pu = luns; + + sector_div(paddr, uaddrf->lun_stripe); + ppa.m.sec += uaddrf->sec_stripe * paddr; + } return ppa; } @@ -985,15 +1024,32 @@ static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr, static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk, struct ppa_addr p) { - struct nvm_addr_format_12 *ppaf = - (struct nvm_addr_format_12 *)&pblk->addrf; + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; u64 paddr; - paddr = (u64)p.g.ch << ppaf->ch_offset; - paddr |= (u64)p.g.lun << ppaf->lun_offset; - paddr |= (u64)p.g.pg << ppaf->pg_offset; - paddr |= (u64)p.g.pl << ppaf->pln_offset; - paddr |= (u64)p.g.sec << ppaf->sec_offset; + if (geo->c.version == NVM_OCSSD_SPEC_12) { + struct nvm_addr_format_12 *ppaf = + (struct nvm_addr_format_12 *)&pblk->addrf; + + paddr = (u64)p.g.ch << ppaf->ch_offset; + paddr |= (u64)p.g.lun << ppaf->lun_offset; + paddr |= (u64)p.g.pg << ppaf->pg_offset; + paddr |= (u64)p.g.pl << ppaf->pln_offset; + paddr |= (u64)p.g.sec << ppaf->sec_offset; + } else { + struct pblk_addr_format *uaddrf = &pblk->uaddrf; + u64 secs = (u64)p.m.sec; + int sec_stripe; + + paddr = (u64)p.m.grp * uaddrf->sec_stripe; + paddr += (u64)p.m.pu * uaddrf->sec_lun_stripe; + + div_u64_rem(secs, uaddrf->sec_stripe, &sec_stripe); + sector_div(secs, uaddrf->sec_stripe); + paddr += secs * uaddrf->sec_ws_stripe; + paddr += sec_stripe; + } return paddr; } @@ -1010,15 +1066,37 @@ static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32) ppa64.c.line = ppa32 & ((~0U) >> 1); ppa64.c.is_cached = 1; } else { - struct nvm_addr_format_12 *ppaf = + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + + if (geo->c.version == NVM_OCSSD_SPEC_12) { + struct nvm_addr_format_12 *ppaf = (struct nvm_addr_format_12 *)&pblk->addrf; - ppa64.g.ch = (ppa32 & ppaf->ch_mask) >> ppaf->ch_offset; - ppa64.g.lun = (ppa32 & ppaf->lun_mask) >> ppaf->lun_offset; - ppa64.g.blk = (ppa32 & ppaf->blk_mask) >> ppaf->blk_offset; - ppa64.g.pg = (ppa32 & ppaf->pg_mask) >> ppaf->pg_offset; - ppa64.g.pl = (ppa32 & ppaf->pln_mask) >> ppaf->pln_offset; - ppa64.g.sec = (ppa32 & ppaf->sec_mask) >> ppaf->sec_offset; + ppa64.g.ch = (ppa32 & ppaf->ch_mask) >> + ppaf->ch_offset; + ppa64.g.lun = (ppa32 & ppaf->lun_mask) >> + ppaf->lun_offset; + ppa64.g.blk = (ppa32 & ppaf->blk_mask) >> + ppaf->blk_offset; + ppa64.g.pg = (ppa32 & ppaf->pg_mask) >> + ppaf->pg_offset; + ppa64.g.pl = (ppa32 & ppaf->pln_mask) >> + ppaf->pln_offset; + ppa64.g.sec = (ppa32 & ppaf->sec_mask) >> + ppaf->sec_offset; + } else { + struct nvm_addr_format *lbaf = &pblk->addrf; + + ppa64.m.grp = (ppa32 & lbaf->ch_mask) >> + lbaf->ch_offset; + ppa64.m.pu = (ppa32 & lbaf->lun_mask) >> + lbaf->lun_offset; + ppa64.m.chk = (ppa32 & lbaf->chk_mask) >> + lbaf->chk_offset; + ppa64.m.sec = (ppa32 & lbaf->sec_mask) >> + lbaf->sec_offset; + } } return ppa64; @@ -1034,15 +1112,27 @@ static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr ppa64) ppa32 |= ppa64.c.line; ppa32 |= 1U << 31; } else { - struct nvm_addr_format_12 *ppaf = + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + + if (geo->c.version == NVM_OCSSD_SPEC_12) { + struct nvm_addr_format_12 *ppaf = (struct nvm_addr_format_12 *)&pblk->addrf; - ppa32 |= ppa64.g.ch << ppaf->ch_offset; - ppa32 |= ppa64.g.lun << ppaf->lun_offset; - ppa32 |= ppa64.g.blk << ppaf->blk_offset; - ppa32 |= ppa64.g.pg << ppaf->pg_offset; - ppa32 |= ppa64.g.pl << ppaf->pln_offset; - ppa32 |= ppa64.g.sec << ppaf->sec_offset; + ppa32 |= ppa64.g.ch << ppaf->ch_offset; + ppa32 |= ppa64.g.lun << ppaf->lun_offset; + ppa32 |= ppa64.g.blk << ppaf->blk_offset; + ppa32 |= ppa64.g.pg << ppaf->pg_offset; + ppa32 |= ppa64.g.pl << ppaf->pln_offset; + ppa32 |= ppa64.g.sec << ppaf->sec_offset; + } else { + struct nvm_addr_format *lbaf = &pblk->addrf; + + ppa32 |= ppa64.m.grp << lbaf->ch_offset; + ppa32 |= ppa64.m.pu << lbaf->lun_offset; + ppa32 |= ppa64.m.chk << lbaf->chk_offset; + ppa32 |= ppa64.m.sec << lbaf->sec_offset; + } } return ppa32; @@ -1160,6 +1250,9 @@ static inline int pblk_set_progr_mode(struct pblk *pblk, int type) struct nvm_geo *geo = &dev->geo; int flags; + if (geo->c.version == NVM_OCSSD_SPEC_20) + return 0; + flags = geo->c.pln_mode >> 1; if (type == PBLK_WRITE) @@ -1179,6 +1272,9 @@ static inline int pblk_set_read_mode(struct pblk *pblk, int type) struct nvm_geo *geo = &dev->geo; int flags; + if (geo->c.version == NVM_OCSSD_SPEC_20) + return 0; + flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE; if (type == PBLK_READ_SEQUENTIAL) flags |= geo->c.pln_mode >> 1; @@ -1192,16 +1288,21 @@ static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs) } #ifdef CONFIG_NVM_DEBUG -static inline void print_ppa(struct ppa_addr *p, char *msg, int error) +static inline void print_ppa(struct nvm_geo *geo, struct ppa_addr *p, + char *msg, int error) { if (p->c.is_cached) { pr_err("ppa: (%s: %x) cache line: %llu\n", msg, error, (u64)p->c.line); - } else { + } else if (geo->c.version == NVM_OCSSD_SPEC_12) { pr_err("ppa: (%s: %x):ch:%d,lun:%d,blk:%d,pg:%d,pl:%d,sec:%d\n", msg, error, p->g.ch, p->g.lun, p->g.blk, p->g.pg, p->g.pl, p->g.sec); + } else { + pr_err("ppa: (%s: %x):ch:%d,lun:%d,chk:%d,sec:%d\n", + msg, error, + p->m.grp, p->m.pu, p->m.chk, p->m.sec); } } @@ -1211,13 +1312,13 @@ static inline void pblk_print_failed_rqd(struct pblk *pblk, struct nvm_rq *rqd, int bit = -1; if (rqd->nr_ppas == 1) { - print_ppa(&rqd->ppa_addr, "rqd", error); + print_ppa(&pblk->dev->geo, &rqd->ppa_addr, "rqd", error); return; } while ((bit = find_next_bit((void *)&rqd->ppa_status, rqd->nr_ppas, bit + 1)) < rqd->nr_ppas) { - print_ppa(&rqd->ppa_list[bit], "rqd", error); + print_ppa(&pblk->dev->geo, &rqd->ppa_list[bit], "rqd", error); } pr_err("error:%d, ppa_status:%llx\n", error, rqd->ppa_status); @@ -1233,16 +1334,25 @@ static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev, for (i = 0; i < nr_ppas; i++) { ppa = &ppas[i]; - if (!ppa->c.is_cached && - ppa->g.ch < geo->num_ch && - ppa->g.lun < geo->num_lun && - ppa->g.pl < geo->c.num_pln && - ppa->g.blk < geo->c.num_chk && - ppa->g.pg < geo->c.num_pg && - ppa->g.sec < geo->c.ws_min) - continue; + if (geo->c.version == NVM_OCSSD_SPEC_12) { + if (!ppa->c.is_cached && + ppa->g.ch < geo->num_ch && + ppa->g.lun < geo->num_lun && + ppa->g.pl < geo->c.num_pln && + ppa->g.blk < geo->c.num_chk && + ppa->g.pg < geo->c.num_pg && + ppa->g.sec < geo->c.ws_min) + continue; + } else { + if (!ppa->c.is_cached && + ppa->m.grp < geo->num_ch && + ppa->m.pu < geo->num_lun && + ppa->m.chk < geo->c.num_chk && + ppa->m.sec < geo->c.clba) + continue; + } - print_ppa(ppa, "boundary", i); + print_ppa(geo, ppa, "boundary", i); return 1; }