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drm/amdgpu: add VRAM manager v2

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Split VRAM allocations into 4MB blocks.

v2: fix typo in comment, some suggested cleanups
v3: document how to disable the feature, fix rebase issue

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2016-08-24 15:51:49 +02:00
committed by Alex Deucher
parent 8892f153c8
commit 6a7f76e70f
7 changed files with 237 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -1052,6 +1052,13 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
amdgpu_vm_block_size);
amdgpu_vm_block_size = 9;
}
if ((amdgpu_vram_page_split != -1 && amdgpu_vram_page_split < 16) ||
!amdgpu_check_pot_argument(amdgpu_vram_page_split)) {
dev_warn(adev->dev, "invalid VRAM page split (%d)\n",
amdgpu_vram_page_split);
amdgpu_vram_page_split = 1024;
}
}
/**