[Freedreno] [PATCH 05/12] drm/msm/adreno: Use quirk to identify cached-coherent support
Akhil P Oommen
quic_akhilpo at quicinc.com
Mon Jul 17 22:00:42 UTC 2023
On Thu, Jul 13, 2023 at 03:25:33PM -0700, Rob Clark wrote:
>
> On Thu, Jul 13, 2023 at 1:06 PM Akhil P Oommen <quic_akhilpo at quicinc.com> wrote:
> >
> > On Thu, Jul 06, 2023 at 02:10:38PM -0700, Rob Clark wrote:
> > >
> > > From: Rob Clark <robdclark at chromium.org>
> > >
> > > It is better to explicitly list it. With the move to opaque chip-id's
> > > for future devices, we should avoid trying to infer things like
> > > generation from the numerical value.
> > >
> > > Signed-off-by: Rob Clark <robdclark at chromium.org>
> > > ---
> > > drivers/gpu/drm/msm/adreno/adreno_device.c | 23 +++++++++++++++-------
> > > drivers/gpu/drm/msm/adreno/adreno_gpu.h | 1 +
> > > 2 files changed, 17 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > > index f469f951a907..3c531da417b9 100644
> > > --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> > > +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > > @@ -256,6 +256,7 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_512K,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> > > .init = a6xx_gpu_init,
> > > }, {
> > > .rev = ADRENO_REV(6, 1, 9, ANY_ID),
> > > @@ -266,6 +267,7 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_512K,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a615_zap.mdt",
> > > .hwcg = a615_hwcg,
> > > @@ -278,6 +280,7 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_1M,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a630_zap.mdt",
> > > .hwcg = a630_hwcg,
> > > @@ -290,6 +293,7 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_1M,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a640_zap.mdt",
> > > .hwcg = a640_hwcg,
> > > @@ -302,7 +306,8 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_1M + SZ_128K,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > - .quirks = ADRENO_QUIRK_HAS_HW_APRIV,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT |
> > > + ADRENO_QUIRK_HAS_HW_APRIV,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a650_zap.mdt",
> > > .hwcg = a650_hwcg,
> > > @@ -316,7 +321,8 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_1M + SZ_512K,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > - .quirks = ADRENO_QUIRK_HAS_HW_APRIV,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT |
> > > + ADRENO_QUIRK_HAS_HW_APRIV,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a660_zap.mdt",
> > > .hwcg = a660_hwcg,
> > > @@ -329,7 +335,8 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_512K,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > - .quirks = ADRENO_QUIRK_HAS_HW_APRIV,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT |
> > > + ADRENO_QUIRK_HAS_HW_APRIV,
> > > .init = a6xx_gpu_init,
> > > .hwcg = a660_hwcg,
> > > .address_space_size = SZ_16G,
> > > @@ -342,6 +349,7 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_2M,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a640_zap.mdt",
> > > .hwcg = a640_hwcg,
> > > @@ -353,7 +361,8 @@ static const struct adreno_info gpulist[] = {
> > > },
> > > .gmem = SZ_4M,
> > > .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > > - .quirks = ADRENO_QUIRK_HAS_HW_APRIV,
> > > + .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT |
> > > + ADRENO_QUIRK_HAS_HW_APRIV,
> > > .init = a6xx_gpu_init,
> > > .zapfw = "a690_zap.mdt",
> > > .hwcg = a690_hwcg,
> > > @@ -565,9 +574,9 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
> > > if (ret)
> > > return ret;
> > >
> > > - if (config.rev.core >= 6)
> > > - if (!adreno_has_gmu_wrapper(to_adreno_gpu(gpu)))
> > > - priv->has_cached_coherent = true;
> > > + priv->has_cached_coherent =
> > > + !!(info->quirks & ADRENO_QUIRK_HAS_CACHED_COHERENT) &&
> > > + !adreno_has_gmu_wrapper(to_adreno_gpu(gpu));
> > >
> > > return 0;
> > > }
> > > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > > index a7c4a2c536e3..e08d41337169 100644
> > > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > > @@ -33,6 +33,7 @@ enum {
> > > #define ADRENO_QUIRK_FAULT_DETECT_MASK BIT(1)
> > > #define ADRENO_QUIRK_LMLOADKILL_DISABLE BIT(2)
> > > #define ADRENO_QUIRK_HAS_HW_APRIV BIT(3)
> > > +#define ADRENO_QUIRK_HAS_CACHED_COHERENT BIT(4)
> > a shorter ADRENO_IS_IOCOHERENT?
>
> I prefer "HAS" to "IS".. maybe it is just me but "IS" sounds to me
> like all dma is coherent, while in fact gpu mappings can be either
> coherent or not.
Okay. Sounds good.
-Akhil.
>
> I suppose it could be "HAS_IOCOHERENT" but we do use "CACHED_COHERENT"
> elsewhere.
>
> BR,
> -R
>
> >
> > -Akhil
> >
> > >
> > > struct adreno_rev {
> > > uint8_t core;
> > > --
> > > 2.41.0
> > >
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