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| author | Amber Lin <Amber.Lin@amd.com> | 2018-02-27 10:01:59 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-28 15:38:46 -0500 |
| commit | f8f4b9a679e52298b14358db22c37a135e7086ec (patch) | |
| tree | d832f1bc6717908756b81280b48d1c00e2b3f8b1 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | |
| parent | 5d447f09b8d8346c64f4c952a67c61f7ce88d3c1 (diff) | |
| download | op-kernel-dev-f8f4b9a679e52298b14358db22c37a135e7086ec.zip op-kernel-dev-f8f4b9a679e52298b14358db22c37a135e7086ec.tar.gz | |
drm/amdgpu: Map all visible VRAM at startup
When using CPU to update page table, we need to kmap all the PDs/PTs after
they are allocated and that requires a TLB shot down on each CPU, which is
quite heavy.
Instead, we map the whole visible VRAM to a kernel address at once. Pages
can be obtained from the offset.
v2: move the mapping base from gmc to amdgpu_mman structure, and the
implementation in amdgpu_ttm_* functions
Signed-off-by: Amber Lin <Amber.Lin@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_ttm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index 1e275c7..d314910 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -44,6 +44,7 @@ struct amdgpu_mman { struct ttm_bo_device bdev; bool mem_global_referenced; bool initialized; + void __iomem *aper_base_kaddr; #if defined(CONFIG_DEBUG_FS) struct dentry *debugfs_entries[8]; |
