diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4042-drm-amdgpu-Enable-gfx-cache-probing-on-HDP-write-for.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4042-drm-amdgpu-Enable-gfx-cache-probing-on-HDP-write-for.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4042-drm-amdgpu-Enable-gfx-cache-probing-on-HDP-write-for.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4042-drm-amdgpu-Enable-gfx-cache-probing-on-HDP-write-for.patch new file mode 100644 index 00000000..5162db11 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4042-drm-amdgpu-Enable-gfx-cache-probing-on-HDP-write-for.patch @@ -0,0 +1,35 @@ +From c0c1fc42ed27a2e44bb10e65769297d3d9147800 Mon Sep 17 00:00:00 2001 +From: Oak Zeng <Oak.Zeng@amd.com> +Date: Mon, 7 Oct 2019 15:32:23 -0500 +Subject: [PATCH 4042/4256] drm/amdgpu: Enable gfx cache probing on HDP write + for arcturus + +This allows gfx cache to be probed and invalidated (for none-dirty cache lines) +on a HDP write (from either another GPU or CPU). This should work only for the +memory mapped as RW memory type newly added for arcturus, to achieve some cache +coherence b/t multiple memory clients. + +Change-Id: I5c9a6a25d88cd75c71c88822123e0d4c067aa3f8 +Acked-by: Christian Konig <christian.koenig@amd.com> +Signed-off-by: Oak Zeng <Oak.Zeng@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +index cfe135544d24..6ddb8bdf77cc 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +@@ -1204,6 +1204,9 @@ static int gmc_v9_0_hw_init(void *handle) + /* TODO for renoir */ + mmhub_v1_0_update_power_gating(adev, true); + break; ++ case CHIP_ARCTURUS: ++ WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1); ++ break; + default: + break; + } +-- +2.17.1 + |