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| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2020-09-17 19:32:34 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-01 10:42:13 -0400 |
| commit | 1bba36834c3bc317d8a30dd5d0cc3e59d64dbfb3 (patch) | |
| tree | dc4cc06565422509ff5064a6e0d6bbb5c1cebe12 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | f2fa07b39fafb2a5f49c71a504862c5efa57d03e (diff) | |
| download | lwn-1bba36834c3bc317d8a30dd5d0cc3e59d64dbfb3.tar.gz lwn-1bba36834c3bc317d8a30dd5d0cc3e59d64dbfb3.zip | |
drm/amdgpu: add helper function for indirect reg access (v3)
Add helper function in order to remove RREG32/WREG32
in current pcie_rreg/wreg function for soc15 and
onwards adapters.
PCIE_INDEX/DATA pairs are used to access regsiters
outside of mmio bar in the helper functions.
The new helper functions help remove the recursion
of amdgpu_mm_rreg/wreg from pcie_rreg/wreg and
provide the oppotunity to centralize direct and
indirect access in a single function.
v2: Fixed typo and refine the comments
v3: Remove unnecessary volatile local variable
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index befef3b60547..bc921c83aad7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1032,6 +1032,19 @@ uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset); u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg); void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v); +u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev, + u32 pcie_index, u32 pcie_data, + u32 reg_addr); +u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev, + u32 pcie_index, u32 pcie_data, + u32 reg_addr); +void amdgpu_device_indirect_wreg(struct amdgpu_device *adev, + u32 pcie_index, u32 pcie_data, + u32 reg_addr, u32 reg_data); +void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev, + u32 pcie_index, u32 pcie_data, + u32 reg_addr, u64 reg_data); + bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type); bool amdgpu_device_has_dc_support(struct amdgpu_device *adev); |