diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h index 9efdd66279e5..975afa04df09 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h @@ -21,6 +21,15 @@ #ifndef __AMDGPU_UMC_H__ #define __AMDGPU_UMC_H__ +/* implement 64 bits REG operations via 32 bits interface */ +#define RREG64_UMC(reg) (RREG32(reg) | \ + ((uint64_t)RREG32((reg) + 1) << 32)) +#define WREG64_UMC(reg, v) \ + do { \ + WREG32((reg), lower_32_bits(v)); \ + WREG32((reg) + 1, upper_32_bits(v)); \ + } while (0) + /* * void (*func)(struct amdgpu_device *adev, struct ras_err_data *err_data, * uint32_t umc_reg_offset, uint32_t channel_index) |