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drm/amdgpu: expose the VA above the hole to userspace 

Let userspace know how much area we have above the 48bit VA hole on
Vega10.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-11-07 12:03:31 +01:00 committed by Alex Deucher
parent 4b7f0848c4
commit 5b565e0e5a
2 changed files with 14 additions and 2 deletions
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12
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -550,6 +550,7 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
}
case AMDGPU_INFO_DEV_INFO: {
struct drm_amdgpu_info_device dev_info = {};
uint64_t vm_size;
dev_info.device_id = dev->pdev->device;
dev_info.chip_rev = adev->rev_id;
@ -577,10 +578,17 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
dev_info.ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
if (amdgpu_sriov_vf(adev))
dev_info.ids_flags |= AMDGPU_IDS_FLAGS_PREEMPTION;
vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE;
dev_info.virtual_address_max =
min(adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE,
AMDGPU_VA_HOLE_START);
min(vm_size, AMDGPU_VA_HOLE_START);
vm_size -= AMDGPU_VA_RESERVED_SIZE;
if (vm_size > AMDGPU_VA_HOLE_START) {
dev_info.high_va_offset = AMDGPU_VA_HOLE_END;
dev_info.high_va_max = AMDGPU_VA_HOLE_END | vm_size;
}
dev_info.virtual_address_alignment = max((int)PAGE_SIZE, AMDGPU_GPU_PAGE_SIZE);
dev_info.pte_fragment_size = (1 << adev->vm_manager.fragment_size) * AMDGPU_GPU_PAGE_SIZE;
dev_info.gart_page_size = AMDGPU_GPU_PAGE_SIZE;

4
include/uapi/drm/amdgpu_drm.h
View File

@ -877,6 +877,10 @@ struct drm_amdgpu_info_device {
__u32 _pad1;
/* always on cu bitmap */
__u32 cu_ao_bitmap[4][4];
/** Starting high virtual address for UMDs. */
__u64 high_va_offset;
/** The maximum high virtual address */
__u64 high_va_max;
};
struct drm_amdgpu_info_hw_ip {