[PATCH 49/88] drm/amdgpu: remove AMDGPU_GEM_CREATE_CPU_GTT_UC

Oded Gabbay oded.gabbay at gmail.com
Sat Jun 6 12:32:32 PDT 2015


On Sat, Jun 6, 2015 at 10:09 PM, Christian K├Ânig
<deathsimple at vodafone.de> wrote:
> On 06.06.2015 19:08, Oded Gabbay wrote:
>
> Hi Alex,
> I think you have a mistake in this patch.
> You renamed AMDGPU_GEM_CREATE_CPU_GTT_WC to AMDGPU_GEM_CREATE_CPU_GTT_USWC,
> however, AMDGPU_GEM_CREATE_CPU_GTT_WC was defined as (1 << 3) and
> AMDGPU_GEM_CREATE_CPU_GTT_USWC is defined as (1 << 2)
>
>
> That patch merged AMDGPU_GEM_CREATE_CPU_GTT_WC and
> AMDGPU_GEM_CREATE_CPU_GTT_UC to AMDGPU_GEM_CREATE_CPU_GTT_USWC.
>
> So using 1 << 2 for the new value is perfectly fine.
>
> Christian.
>
Yeah, I see it now.
False alarm.

Oded
>
>
> Oded
>
> On Wed, May 27, 2015 at 6:22 AM Alex Deucher <alexdeucher at gmail.com> wrote:
>>
>> From: Jammy Zhou <Jammy.Zhou at amd.com>
>>
>> This flag isn't used by user mode drivers, remove it to avoid
>> confusion. And rename GTT_WC to GTT_USWC to make it clear.
>>
>> Signed-off-by: Jammy Zhou <Jammy.Zhou at amd.com>
>> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
>> ---
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 10 ++--------
>>  include/uapi/drm/amdgpu_drm.h              |  7 ++-----
>>  2 files changed, 4 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> index f5e17f9..992b7f5 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> @@ -132,10 +132,7 @@ void amdgpu_ttm_placement_from_domain(struct
>> amdgpu_bo *rbo, u32 domain)
>>         }
>>
>>         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
>> -               if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_UC) {
>> -                       rbo->placements[c].fpfn = 0;
>> -                       rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED
>> | TTM_PL_FLAG_TT;
>> -               } else if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_WC) {
>> +               if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
>>                         rbo->placements[c].fpfn = 0;
>>                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
>> TTM_PL_FLAG_TT |
>>
>> TTM_PL_FLAG_UNCACHED;
>> @@ -146,10 +143,7 @@ void amdgpu_ttm_placement_from_domain(struct
>> amdgpu_bo *rbo, u32 domain)
>>         }
>>
>>         if (domain & AMDGPU_GEM_DOMAIN_CPU) {
>> -               if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_UC) {
>> -                       rbo->placements[c].fpfn = 0;
>> -                       rbo->placements[c++].flags =  TTM_PL_FLAG_UNCACHED
>> | TTM_PL_FLAG_SYSTEM;
>> -               } else if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_WC) {
>> +               if (rbo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
>>                         rbo->placements[c].fpfn = 0;
>>                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
>> TTM_PL_FLAG_SYSTEM |
>>
>> TTM_PL_FLAG_UNCACHED;
>> diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
>> index 9e771fb..77bc574 100644
>> --- a/include/uapi/drm/amdgpu_drm.h
>> +++ b/include/uapi/drm/amdgpu_drm.h
>> @@ -73,15 +73,12 @@
>>  #define AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED  (1 << 0)
>>  /* Flag that CPU access will not work, this VRAM domain is invisible */
>>  #define AMDGPU_GEM_CREATE_NO_CPU_ACCESS                (1 << 1)
>> -/* Flag that un-cached attributes should be used for GTT */
>> -#define AMDGPU_GEM_CREATE_CPU_GTT_UC           (1 << 2)
>>  /* Flag that USWC attributes should be used for GTT */
>> -#define AMDGPU_GEM_CREATE_CPU_GTT_WC           (1 << 3)
>> +#define AMDGPU_GEM_CREATE_CPU_GTT_USWC         (1 << 2)
>>
>>  /* Flag mask for GTT domain_flags */
>>  #define AMDGPU_GEM_CREATE_CPU_GTT_MASK \
>> -       (AMDGPU_GEM_CREATE_CPU_GTT_WC | \
>> -        AMDGPU_GEM_CREATE_CPU_GTT_UC | \
>> +       (AMDGPU_GEM_CREATE_CPU_GTT_USWC | \
>>          AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | \
>>          AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
>>
>> --
>> 1.8.3.1
>>
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>
>
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