diff options
| author | Junwei Zhang <Jerry.Zhang@amd.com> | 2016-09-21 10:33:26 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-10-25 14:38:13 -0400 |
| commit | cfa32556e58d8a353666fb007f708a4955c6711c (patch) | |
| tree | 87d10b8d7cfcfc6454b68c9c6a007d1517ebd0fc /drivers/gpu/drm | |
| parent | 9f6163e7e342bd150efd01aa51432a2e73039762 (diff) | |
| download | linux-cfa32556e58d8a353666fb007f708a4955c6711c.tar.bz2 | |
drm/amd/amdgpu: add info about vram and gtt max allocation size
Signed-off-by: Junwei Zhang <Jerry.Zhang@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')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 67b6274e25c8..09b94901faec 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -421,6 +421,24 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file min((size_t)size, sizeof(vram_gtt_total))) ? -EFAULT : 0; } + case AMDGPU_INFO_VRAM_GTT_MAX: { + struct drm_amdgpu_info_vram_gtt_max vram_gtt_max; + u64 max_size; + + max_size = adev->mc.real_vram_size - adev->vram_pin_size; + vram_gtt_max.vram_max_size = max_size * 3 / 4; + + max_size = adev->mc.visible_vram_size - (adev->vram_pin_size - + adev->invisible_pin_size); + vram_gtt_max.vram_cpu_accessible_max_size = max_size * 3 / 4; + + max_size = adev->mc.gtt_size - adev->gart_pin_size; + vram_gtt_max.gtt_max_size = max_size * 3 / 4; + + return copy_to_user(out, &vram_gtt_max, + min((size_t)size, sizeof(vram_gtt_max))) + ? -EFAULT : 0; + } case AMDGPU_INFO_READ_MMR_REG: { unsigned n, alloc_size; uint32_t *regs; |