[PATCH 1/4] drm/amdgpu: Macros for vram physical addr calculation

[Zeng, Oak]

[AMD Official Use Only - Internal Distribution Only]

Ping, can someone help review this series?

Regards,
Oak



On 2021-03-25, 12:38 PM, "Zeng, Oak" <Oak.Zeng at amd.com> wrote:

    Add one macro to calculate BO's GPU physical address.
    And another one to calculate BO's CPU physical address.

    Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
    Suggested-by: Lijo Lazar <lijo.lazar at amd.com>
    ---
     drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 3 +++
     1 file changed, 3 insertions(+)

    diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
    index 2ee8d1b..7cd9d34 100644
    --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
    +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
    @@ -283,6 +283,9 @@ struct amdgpu_gmc {
     #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
     #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags))
     #define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev))
    +#define amdgpu_gmc_gpu_va2pa(adev, va) (va - (adev)->gmc.vram_start + (adev)->vm_manager.vram_base_offset)
    +#define amdgpu_gmc_gpu_pa(adev, bo) amdgpu_gmc_gpu_va2pa(adev, amdgpu_bo_gpu_offset(bo))
    +#define amdgpu_gmc_cpu_pa(adev, bo) (amdgpu_bo_gpu_offset(bo) - (adev)->gmc.vram_start + (adev)->gmc.aper_base)

     /**
      * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
    --
    2.7.4