On 2015年03月05日 02:36, Kim Phillips wrote:
On Wed, 4 Mar 2015 13:33:22 +0800
yjin <yanjiang.jin@xxxxxxxxxxxxx> wrote:
On 2015年03月04日 03:31, Kim Phillips wrote:
On Tue, 3 Mar 2015 14:50:52 +0800
<yanjiang.jin@xxxxxxxxxxxxx> wrote:
- dma_unmap_single(jrdev, ctx->sh_desc_dma, DESC_RNG_LEN,
- DMA_TO_DEVICE);
+ dma_unmap_single(jrdev, ctx->sh_desc_dma,
+ desc_bytes(ctx->sh_desc), DMA_TO_DEVICE);
alignment: the 'd' in desc_bytes should fall directly under the 'j'
in jrdev.
Also, DESC_RNG_LEN should be corrected to (4 * CAAM_CMD_SZ).
Hi Kim,
I can't find the obvious limitation for the RNG descriptor length in
Freescale documents, could you point out it?
? rng_create_sh_desc() creates a fixed descriptor of exactly 4
command-lengths.
Hi Kim,
Do you mean that the code itself limits the descriptor length? Not a
hardware limitation.
If so, I prefer to dma_unmap with desc_bytes(ctx->sh_desc) as my
previous patch, and correct DESC_RNG_LEN to (4 * CAAM_CMD_SZ).
Thanks!
Yanjiang
Kim
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