Messages in this thread | | | Date | Sun, 22 Nov 2015 22:05:09 +0800 | Subject | Re: [PATCH] lightnvm: calculate device values correctly | From | Wenwei Tao <> |
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I'm a new guy to flash, if I'm wrong about this patch, please correct me. Thanks.
2015-11-22 21:51 GMT+08:00 Wenwei Tao <ww.tao0320@gmail.com>: > In the original calculation, the relationships among > block, plane and lun was confusing, refine it on the > basis of Open-channelSSDInterfaceSpecification. > > Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com> > --- > drivers/lightnvm/core.c | 9 ++++----- > 1 file changed, 4 insertions(+), 5 deletions(-) > > diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c > index f659e60..1864b94 100644 > --- a/drivers/lightnvm/core.c > +++ b/drivers/lightnvm/core.c > @@ -174,8 +174,8 @@ static int nvm_core_init(struct nvm_dev *dev) > dev->nr_chnls = grp->num_ch; > dev->luns_per_chnl = grp->num_lun; > dev->pgs_per_blk = grp->num_pg; > - dev->blks_per_lun = grp->num_blk; > dev->nr_planes = grp->num_pln; > + dev->blks_per_lun = grp->num_blk * grp->num_pln; > dev->sec_size = grp->csecs; > dev->oob_size = grp->sos; > dev->sec_per_pg = grp->fpg_sz / grp->csecs; > @@ -191,13 +191,12 @@ static int nvm_core_init(struct nvm_dev *dev) > dev->plane_mode = NVM_PLANE_QUAD; > > /* calculated values */ > - dev->sec_per_pl = dev->sec_per_pg * dev->nr_planes; > - dev->sec_per_blk = dev->sec_per_pl * dev->pgs_per_blk; > + dev->sec_per_blk = dev->sec_per_pg * dev->pgs_per_blk; > + dev->sec_per_pl = dev->sec_per_blk * grp->num_blk; > dev->sec_per_lun = dev->sec_per_blk * dev->blks_per_lun; > dev->nr_luns = dev->luns_per_chnl * dev->nr_chnls; > > - dev->total_blocks = dev->nr_planes * > - dev->blks_per_lun * > + dev->total_blocks = dev->blks_per_lun * > dev->luns_per_chnl * > dev->nr_chnls; > dev->total_pages = dev->total_blocks * dev->pgs_per_blk; > -- > 1.9.1 >
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