[PATCH] lightnvm: pblk: add helpers for chunk addresses
From: Javier González <hidden>
Date: 2018-08-29 08:38:22
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- 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) {
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2.7.4