Hi Geert,
On 11/26/14, 5:59 PM, Geert Uytterhoeven wrote:
> Hi Hayama-san,
>
> On Wed, Nov 26, 2014 at 7:19 AM, Takanari Hayama <t...@igel.co.jp> wrote:
>> @@ -179,6 +190,10 @@ static void rpf_vdev_queue(struct vsp1_video *video,
>> struct vsp1_video_buffer *buf)
>> {
>> struct vsp1_rwpf *rpf = container_of(video, struct vsp1_rwpf, video);
>> + int i;
>> +
>> + for (i = 0; i < 3; i++)
>> + rpf->buf_addr[i] = buf->addr[i];
>
> vsp1_video_buffer.addr is "dma_addr_t addr[3];"...
Oops. Thank you for pointing that out.
> BTW, you can use memcpy() instead of an explicit loop.
I thought about it too. However, it might not be that straight forward.
VSP1 accepts only 32-bit address. If we enable LPAE, the address should
be converted and mapped to 32-bit address space via IPMMU. So, once
IPMMU is supported, we should do address mapping.
So, I guess we should leave this loop as is here, so that we can add
some address conversion in the future.
>>
>> vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_Y,
>> buf->addr[0] + rpf->offsets[0]);
>> diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h
>> b/drivers/media/platform/vsp1/vsp1_rwpf.h
>> index 28dd9e7..1f98fe3 100644
>> --- a/drivers/media/platform/vsp1/vsp1_rwpf.h
>> +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h
>> @@ -39,6 +39,8 @@ struct vsp1_rwpf {
>> struct v4l2_rect crop;
>>
>> unsigned int offsets[2];
>> +
>> + unsigned int buf_addr[3];
>
> ... hence the above should use dma_addr_t, too.
>
> If CONFIG_ARM_LPAE is enabled, CONFIG_ARCH_DMA_ADDR_T_64BIT
> will be enabled, too, and dma_addr_t will be u64.
Thanks. Although we cannot support LPAE for VSP1 without IPMMU, I'll
change it to dma_addr_t anyway.
>
>> };
Cheers,
Takanari Hayama, Ph.D. (t...@igel.co.jp)
IGEL Co.,Ltd.
http://www.igel.co.jp/
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