Add one function to calculate BO's GPU physical address. And another function to calculate BO's CPU physical address.
v2: Use functions vs macros (Christian) Use more proper function names (Christian) Signed-off-by: Oak Zeng <oak.z...@amd.com> Suggested-by: Lijo Lazar <lijo.la...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 34 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 3 +++ 2 files changed, 37 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index b9d68fd..ca16649 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -665,3 +665,37 @@ void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev) /* Requires gart_ptb_gpu_pa to be 4K aligned */ amdgpu_gmc_set_pte_pde(adev, adev->gmc.ptr_pdb0, i, gart_ptb_gpu_pa, flags); } + +/** + * amdgpu_gmc_vram_mc2pa - calculate vram buffer's physical address from MC + * address + * + * @adev: amdgpu_device pointer + * @mc_addr: MC address of buffer + */ +uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr) +{ + return mc_addr - adev->gmc.vram_start + adev->vm_manager.vram_base_offset; +} +/** + * amdgpu_gmc_vram_pa - calculate vram buffer object's physical address from + * GPU's view + * + * @adev: amdgpu_device pointer + * @bo: amdgpu buffer object + */ +uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo) +{ + return amdgpu_gmc_vram_mc2pa(adev, amdgpu_bo_gpu_offset(bo)); +} +/** + * amdgpu_gmc_vram_cpu_pa - calculate vram buffer object's physical address + * from CPU's view + * + * @adev: amdgpu_device pointer + * @bo: amdgpu buffer object + */ +uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo) +{ + return amdgpu_bo_gpu_offset(bo) - adev->gmc.vram_start + adev->gmc.aper_base; +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h index 7e248a4..bc374bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h @@ -332,4 +332,7 @@ amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type, void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev); void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev); +uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr); +uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo); +uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo); #endif -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx