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

[Oak Zeng]

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