diff options
| author | Likun Gao <Likun.Gao@amd.com> | 2022-05-06 21:50:38 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-05-11 00:53:11 +0300 |
| commit | d9b9aaae3ad0449fb93dd01290b32ef42ca2f513 (patch) | |
| tree | 924e70d007b1bb999b6d596b22f9d42d1f2ee01b /drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c | |
| parent | f932ffbbf6ffa9e8425e2d3775a799d3e670c31e (diff) | |
| download | linux-d9b9aaae3ad0449fb93dd01290b32ef42ca2f513.tar.xz | |
drm/amdgpu: support fill mem for LSDMA
Support constant data filling in PIO mode for LSDMA.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c index 996722fac60c..4d1d4994ea3f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c @@ -26,6 +26,23 @@ #define AMDGPU_LSDMA_MAX_SIZE 0x2000000ULL +int amdgpu_lsdma_wait_for(struct amdgpu_device *adev, + uint32_t reg_index, uint32_t reg_val, + uint32_t mask) +{ + uint32_t val; + int i; + + for (i = 0; i < adev->usec_timeout; i++) { + val = RREG32(reg_index); + if ((val & mask) == reg_val) + return 0; + udelay(1); + } + + return -ETIME; +} + int amdgpu_lsdma_copy_mem(struct amdgpu_device *adev, uint64_t src_addr, uint64_t dst_addr, @@ -49,3 +66,26 @@ int amdgpu_lsdma_copy_mem(struct amdgpu_device *adev, return 0; } + +int amdgpu_lsdma_fill_mem(struct amdgpu_device *adev, + uint64_t dst_addr, + uint32_t data, + uint64_t mem_size) +{ + int ret; + + if (mem_size == 0) + return -EINVAL; + + while (mem_size > 0) { + uint64_t current_fill_size = min(mem_size, AMDGPU_LSDMA_MAX_SIZE); + + ret = adev->lsdma.funcs->fill_mem(adev, dst_addr, data, current_fill_size); + if (ret) + return ret; + dst_addr += current_fill_size; + mem_size -= current_fill_size; + } + + return 0; +} |