[U-Boot] [PATCH v4 1/1] nvme: Fix PRP Offset Invalid

Tom Rini trini at konsulko.com
Tue Aug 27 00:19:04 UTC 2019

On Thu, Aug 22, 2019 at 08:37:26PM -0700, Aaron Williams wrote:

> When large writes take place I saw a Samsung EVO 970+ return a status
> value of 0x13, PRP Offset Invalid.  I tracked this down to the
> improper handling of PRP entries.  The blocks the PRP entries are
> placed in cannot cross a page boundary and thus should be allocated
> on page boundaries.  This is how the Linux kernel driver works.
> With this patch, the PRP pool is allocated on a page boundary and
> other than the very first allocation, the pool size is a multiple of
> the page size.  Each page can hold (4096 / 8) - 1 entries since the
> last entry must point to the next page in the pool.
> Signed-off-by: Aaron Williams <awilliams at marvell.com>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Applied to u-boot/master, thanks!

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