| Submitter | Matthieu CASTET |
|---|---|
| Date | March 19, 2012, 2:35 p.m. |
| Message ID | <1332167725-7792-1-git-send-email-matthieu.castet@parrot.com> |
| Download | mbox | patch |
| Permalink | /patch/147536/ |
| State | New |
| Headers | show |
Comments
Le 03/19/12 15:35, Matthieu CASTET a écrit : > With onfi a flash is organized into one or more logical units (LUNs). > A logical unit (LUN) is the minimum unit that can independently execute > commands and report status. > > Mtd does not exploit LUN, so make it see a big single flash where size is > lun_size * number_of_lun. > > Without this patch MT29F8G08ADBDAH4 size is 512MB instead of 1GB. > > Signed-off-by: Matthieu Castet<matthieu.castet@parrot.com> Acked-by: Florian Fainelli <ffainelli@freebox.fr> > --- > drivers/mtd/nand/nand_base.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c > index 8a393f9..04c1baf 100644 > --- a/drivers/mtd/nand/nand_base.c > +++ b/drivers/mtd/nand/nand_base.c > @@ -2898,7 +2898,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, > mtd->writesize = le32_to_cpu(p->byte_per_page); > mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; > mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); > - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; > + chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize > + * p->lun_count; > *busw = 0; > if (le16_to_cpu(p->features)& 1) > *busw = NAND_BUSWIDTH_16;
On Mon, 2012-03-19 at 15:35 +0100, Matthieu CASTET wrote: > - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; > + chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize > + * p->lun_count; I've split this long line on 2 shorter: + chip->chipsize = le32_to_cpu(p->blocks_per_lun); + chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; And pushed to l2-mtd.git, thanks!
Patch
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 8a393f9..04c1baf 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2898,7 +2898,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, mtd->writesize = le32_to_cpu(p->byte_per_page); mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize + * p->lun_count; *busw = 0; if (le16_to_cpu(p->features) & 1) *busw = NAND_BUSWIDTH_16;
With onfi a flash is organized into one or more logical units (LUNs). A logical unit (LUN) is the minimum unit that can independently execute commands and report status. Mtd does not exploit LUN, so make it see a big single flash where size is lun_size * number_of_lun. Without this patch MT29F8G08ADBDAH4 size is 512MB instead of 1GB. Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com> --- drivers/mtd/nand/nand_base.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)