Re: [PATCH 3/3] dmaengine: pl330: support transfer unaligned with (burst len * burst size)

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Hi Shawn

On 2016年08月05日 10:53, Shawn Lin wrote:
Currently pl330 doesn't support transfer which doesn't
align with burst len * burst size. This should be only
for single mode. Let's allow it for busrt mode if available.

e.g. transfers 0x10002 bytes:
First loop 256*16*16=0x10000, burst size is 1, burst length is 16.
Then the second loop 2 bytes, burst size is 1, burst length is 1.

f0041000:        DMAMOV CCR 0xbc02f1
f0041006:        DMAMOV SAR 0xdd6c0000
f004100c:        DMAMOV DAR 0xff1d0400
f0041012:        DMALP_0 15
f0041014:        DMALP_1 255
f0041016:        DMAWFPB 12
f0041018:        DMALDA
f0041019:        DMASTPB 12
f004101b:        DMAFLUSHP 12
f004101d:        DMALPENDA_1 bjmpto_7
f004101f:        DMALPENDA_0 bjmpto_b
f0041021:        DMAMOV CCR 0x800201
f0041027:        DMALP_1 1
f0041029:        DMAWFPB 12
f004102b:        DMALDA
f004102c:        DMASTPB 12
f004102e:        DMAFLUSHP 12
f0041030:        DMALPENDA_1 bjmpto_7
f0041032:        DMASEV 0
f0041034:        DMAEND

Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>

Tested-by: Xing Zheng <zhengxing@xxxxxxxxxxxxxx>

Thanks.

--
- Xing Zheng


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