drm/amdgpu: expose the max virtual address

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 02c450d..35185d6 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -428,6 +428,7 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
                if (adev->flags & AMDGPU_IS_APU)
                        dev_info.ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
                dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE;
+               dev_info.virtual_address_max = (uint64_t)adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
                dev_info.virtual_address_alignment = max(PAGE_SIZE, 0x10000UL);
                dev_info.pte_fragment_size = (1 << AMDGPU_LOG2_PAGES_PER_FRAG) *
                                             AMDGPU_GPU_PAGE_SIZE;

diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index fb428fe..65da7cd 100644 (file)
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -560,6 +560,8 @@ struct drm_amdgpu_info_device {
        uint64_t ids_flags;
        /** Starting virtual address for UMDs. */
        uint64_t virtual_address_offset;
+       /** The maximum virtual address */
+       uint64_t virtual_address_max;
        /** Required alignment of virtual addresses. */
        uint32_t virtual_address_alignment;
        /** Page table entry - fragment size */