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[193.106.164.211]) by smtp.gmail.com with ESMTPSA id y18-v6sm1926598ita.29.2018.08.29.01.38.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 29 Aug 2018 01:38:19 -0700 (PDT) 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, =?UTF-8?q?Javier=20Gonz=C3=A1lez?= Subject: [PATCH] lightnvm: pblk: add helpers for chunk addresses Date: Wed, 29 Aug 2018 10:37:51 +0200 Message-Id: <1535531871-23255-1-git-send-email-javier@cnexlabs.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement helpers to go from ppas to a chunk within a line and an address within a chunk. These helpers will be used on the patches adding trace support in pblk, which will be sent in this window. Signed-off-by: Javier González --- drivers/lightnvm/pblk.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index be67bbfa3d0a..1bfbd3315598 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -1034,6 +1034,37 @@ static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr, return ppa; } +static inline struct nvm_chk_meta *pblk_dev_ppa_to_chunk(struct pblk *pblk, + struct ppa_addr p) +{ + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + struct pblk_line *line = &pblk->lines[pblk_ppa_to_line(p)]; + int pos = pblk_ppa_to_pos(geo, p); + + return &line->chks[pos]; +} + +static inline u64 pblk_dev_ppa_to_chunk_addr(struct pblk *pblk, + struct ppa_addr p) +{ + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; + u64 caddr; + + if (geo->version == NVM_OCSSD_SPEC_12) { + struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf; + + caddr = (u64)p.g.pg << ppaf->pg_offset; + caddr |= (u64)p.g.pl << ppaf->pln_offset; + caddr |= (u64)p.g.sec << ppaf->sec_offset; + } else { + caddr = p.m.sec; + } + + return caddr; +} + static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk, struct ppa_addr p) { -- 2.7.4