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>
This commit is contained in:
Junwei Zhang
2016-09-21 10:33:26 +08:00
committed by Alex Deucher
parent 9f6163e7e3
commit cfa32556e5
2 changed files with 26 additions and 0 deletions

View File

@@ -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;