On 07.07.2020 11:40, Andrzej Hajda wrote:
> On 19.06.2020 12:36, Marek Szyprowski wrote:
>> The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function
>> returns the number of the created entries in the DMA address space.
>> However the subsequent calls to
On 07.07.2020 11:35, Andrzej Hajda wrote:
> Hi,
>
> On 19.06.2020 12:36, Marek Szyprowski wrote:
>> Use common helper for checking the contiguity of the imported dma-buf.
>>
>> Signed-off-by: Marek Szyprowski
Just fixing my signature :)
Reviewed-by: Andr
On 07.07.2020 16:30, Andrzej Hajda wrote:
> On 19.06.2020 12:36, Marek Szyprowski wrote:
>> It is a common operation done by DRM drivers to check the contiguity
>> of the DMA-mapped buffer described by a scatterlist in the
>> sg_table object. Let's add a common help
des references to the
> nents and orig_nents entries, making the code robust, easier to follow
> and copy/paste safe.
>
> Signed-off-by: Marek Szyprowski
I guess whole patchset can go via drm-misc, after r-b/a-b.
Reviewed-by: Andrzej Hajda
Regards
Andrzej
> ---
> drivers/gpu
sulting code is simple and
> easy to understand, so the comment describing the old code is no
> longer needed.
>
> Signed-off-by: Marek Szyprowski
Nice simplification.
Reviewed-by: Andrzej Hajda
Btw, I've wrongly re-configured my e-mail client, so my R-Bs for other
patches
On 19.06.2020 12:36, Marek Szyprowski wrote:
> It is a common operation done by DRM drivers to check the contiguity
> of the DMA-mapped buffer described by a scatterlist in the
> sg_table object. Let's add a common helper for this operation.
>
> Signed-off-by: Marek Szyprowski
> ---
>
On 19.06.2020 12:36, Marek Szyprowski wrote:
> The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function
> returns the number of the created entries in the DMA address space.
> However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and
> dma_unmap_sg must be called
Hi,
On 19.06.2020 12:36, Marek Szyprowski wrote:
> Use common helper for checking the contiguity of the imported dma-buf.
>
> Signed-off-by: Marek Szyprowski
> ---
> drivers/gpu/drm/exynos/exynos_drm_gem.c | 23 +++
> 1 file changed, 3 insertions(+), 20 deletions(-)
>
>
Hi,
Gently ping.
Regards
Andrzej
On 31.03.2017 13:02, Andrzej Hajda wrote:
> In case of DMA_ATTR_FORCE_CONTIGUOUS allocations vm_area->pages
> is invalid. __iommu_mmap_attrs and __iommu_get_sgtable should not
> use it and take advantage of contiguous nature of the allocation.
>
&
Hi Russel,
On 31.03.2017 13:16, Russell King - ARM Linux wrote:
> On Fri, Mar 31, 2017 at 01:02:51PM +0200, Andrzej Hajda wrote:
>> In this version of the patch I have replaced temporal pages and
>> iommu_dma_mmap with remap_pfn_range or rather its simplified version
>
In case of DMA_ATTR_FORCE_CONTIGUOUS allocations vm_area->pages
is invalid. __iommu_mmap_attrs and __iommu_get_sgtable should not
use it and take advantage of contiguous nature of the allocation.
Fixes: 44176bb ("arm64: Add support for DMA_ATTR_FORCE_CONTIGUOUS to IOMMU")
Signed-of
Hi Robin,
On 30.03.2017 12:44, Robin Murphy wrote:
> On 30/03/17 09:30, Andrzej Hajda wrote:
>> On 30.03.2017 09:40, Geert Uytterhoeven wrote:
>>> Hi Andrzej,
>>>
>>> On Thu, Mar 30, 2017 at 8:51 AM, Andrzej Hajda <a.ha...@samsung.com> wrote:
&g
On 30.03.2017 09:40, Geert Uytterhoeven wrote:
> Hi Andrzej,
>
> On Thu, Mar 30, 2017 at 8:51 AM, Andrzej Hajda <a.ha...@samsung.com> wrote:
>> On 29.03.2017 17:33, Robin Murphy wrote:
>>> On 29/03/17 16:12, Andrzej Hajda wrote:
>>>> On 29.03.2017 14:55, R
On 29.03.2017 17:33, Robin Murphy wrote:
> On 29/03/17 16:12, Andrzej Hajda wrote:
>> On 29.03.2017 14:55, Robin Murphy wrote:
>>> On 29/03/17 11:05, Andrzej Hajda wrote:
>>>> In case of DMA_ATTR_FORCE_CONTIGUOUS allocations vm_area->pages
&g
6bb ("arm64: Add support for DMA_ATTR_FORCE_CONTIGUOUS to IOMMU")
Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
---
Hi,
I am not familiar with this framework so please don't be too cruel ;)
Alternative solution I see is to always create vm_area->pages,
I do not know which
er available in the mentioned SoCs when IOMMU support is
> enabled. To workaround this issue perform a full TLB/FLPD invalidation
> in case of replacing any first level page descriptors in case of SYSMMU v5.
It fixes also crashes of MFC encoder on Exynos5433.
For both patches:
Tested-by: A
The function can return negative value so it should be assigned to signed
variable. The patch changes also type of related i variable to make code
more compact and coherent.
The problem has been detected using patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci.
Signed-off-by: Andrzej
17 matches
Mail list logo
