From: Hawking Zhang Date: Sat, 17 Jan 2026 09:18:10 +0000 (+0800) Subject: drm/amdgpu/gmc12: Set up pdb0 for vmid0 page table X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8392ca2d7ef3a8a8f16c24ec52a1315efae52f76;p=thirdparty%2Flinux.git drm/amdgpu/gmc12: Set up pdb0 for vmid0 page table Alloc, Init and free pdb0 for vmid0 page table that is used for fb translation on A + A platform Signed-off-by: Hawking Zhang Reviewed-by: Le Ma Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c index f5a328bb421db..654c1c7adfae4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c @@ -783,7 +783,14 @@ static int gmc_v12_0_gart_init(struct amdgpu_device *adev) AMDGPU_PTE_EXECUTABLE | AMDGPU_PTE_IS_PTE; - return amdgpu_gart_table_vram_alloc(adev); + r = amdgpu_gart_table_vram_alloc(adev); + if (r) + return r; + + if (amdgpu_gmc_is_pdb0_enabled(adev)) + r = amdgpu_gmc_pdb0_alloc(adev); + + return r; } static int gmc_v12_0_sw_init(struct amdgpu_ip_block *ip_block) @@ -955,6 +962,7 @@ static int gmc_v12_0_sw_fini(struct amdgpu_ip_block *ip_block) amdgpu_vm_manager_fini(adev); gmc_v12_0_gart_fini(adev); amdgpu_gem_force_release(adev); + amdgpu_bo_free_kernel(&adev->gmc.pdb0_bo, NULL, &adev->gmc.ptr_pdb0); amdgpu_bo_fini(adev); return 0; @@ -974,6 +982,9 @@ static int gmc_v12_0_gart_enable(struct amdgpu_device *adev) int r; bool value; + if (adev->gmc.xgmi.connected_to_cpu) + amdgpu_gmc_init_pdb0(adev); + if (adev->gart.bo == NULL) { dev_err(adev->dev, "No VRAM object for PCIE GART.\n"); return -EINVAL; @@ -995,6 +1006,7 @@ static int gmc_v12_0_gart_enable(struct amdgpu_device *adev) drm_info(adev_to_drm(adev), "PCIE GART of %uM enabled (table at 0x%016llX).\n", (unsigned)(adev->gmc.gart_size >> 20), + (adev->gmc.pdb0_bo) ? (unsigned long long)amdgpu_bo_gpu_offset(adev->gmc.pdb0_bo) : (unsigned long long)amdgpu_bo_gpu_offset(adev->gart.bo)); return 0;