diff options
| author | Tao Zhou <tao.zhou1@amd.com> | 2019-08-09 10:57:50 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-08-09 19:17:10 +0300 |
| commit | dd21a572c9068e9a59b46dea67e8a65a44aee90b (patch) | |
| tree | ecc621a5c087c510fe50b4aade94866c24647aad /drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h | |
| parent | c6dddf45402caeadc49dc859fa497cfb98841af4 (diff) | |
| download | linux-dd21a572c9068e9a59b46dea67e8a65a44aee90b.tar.xz | |
drm/amdgpu: implement UMC 64 bits REG operations
implement 64 bits operations via 32 bits interface
v2: make use of lower_32_bits() and upper_32_bits() macros
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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) |