lkml.org 
[lkml]   [2018]   [Aug]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] lightnvm: pblk: add helpers for chunk addresses
From
Date
On 08/29/2018 10:37 AM, Javier González wrote:
> 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 <javier@cnexlabs.com>
> ---
> 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) {

Please move this into core.

> + 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)
> {
>

\
 
 \ /
  Last update: 2018-08-29 14:36    [W:0.104 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site