diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3453-drm-amdgpu-Set-VM_L2_CNTL.PDE_FAULT_CLASSIFICATION-t.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3453-drm-amdgpu-Set-VM_L2_CNTL.PDE_FAULT_CLASSIFICATION-t.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3453-drm-amdgpu-Set-VM_L2_CNTL.PDE_FAULT_CLASSIFICATION-t.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3453-drm-amdgpu-Set-VM_L2_CNTL.PDE_FAULT_CLASSIFICATION-t.patch new file mode 100644 index 00000000..4e6d4662 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3453-drm-amdgpu-Set-VM_L2_CNTL.PDE_FAULT_CLASSIFICATION-t.patch @@ -0,0 +1,58 @@ +From 2c458c0a56b4cf6da708847f1c1b7e4512d2865d Mon Sep 17 00:00:00 2001 +From: Yong Zhao <Yong.Zhao@amd.com> +Date: Tue, 13 Aug 2019 14:38:03 -0400 +Subject: [PATCH 3453/4256] drm/amdgpu: Set VM_L2_CNTL.PDE_FAULT_CLASSIFICATION + to 0 for GFX10 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +We have done this for pre-GFX10 asics, but GFX10 did not pick up the +new change. The below is the commit message for that change. + +This is recommended by HW designers. Previously when it was set to 1, +the PDE walk error in VM fault will be treated as +PERMISSION_OR_INVALID_PAGE_FAULT rather than usually expected OTHER_FAULT. +As a result, the retry control in VM_CONTEXT*_CNTL will change accordingly. + +The above behavior is kind of abnormal. Furthermore, the +PDE_FAULT_CLASSIFICATION == 1 feature was targeted for very old ASICs +and it never made it way to production. Therefore, we should set it to 0. + +Change-Id: If1beedb631d16b85d072aa96657a7a75fa378480 +Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> +Reviewed-by: Christian König <christian.koenig@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c | 2 +- + drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | 2 +- + 2 files changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c +index 8ce5bf5feb45..8b789f750b72 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c +@@ -140,7 +140,7 @@ static void gfxhub_v2_0_init_cache_regs(struct amdgpu_device *adev) + /* XXX for emulation, Refer to closed source code.*/ + tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, + L2_PDE0_CACHE_TAG_GENERATION_MODE, 0); +- tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 1); ++ tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0); + tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1); + tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0); + WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL, tmp); +diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c +index 8ee1225d1a18..3542c203c3c8 100644 +--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c +@@ -126,7 +126,7 @@ static void mmhub_v2_0_init_cache_regs(struct amdgpu_device *adev) + /* XXX for emulation, Refer to closed source code.*/ + tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, L2_PDE0_CACHE_TAG_GENERATION_MODE, + 0); +- tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 1); ++ tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0); + tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1); + tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0); + WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL, tmp); +-- +2.17.1 + |