[PATCH 63/88] drm/amdgpu: expose the max virtual address

Alex Deucher alexdeucher at gmail.com
Tue May 26 20:20:02 PDT 2015


From: Jammy Zhou <Jammy.Zhou at amd.com>

Signed-off-by: Jammy Zhou <Jammy.Zhou at amd.com>
Reviewed-by: Christian K├Ânig <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 1 +
 include/uapi/drm/amdgpu_drm.h           | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 02c450d..35185d6 100644
--- 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
--- 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 */
-- 
1.8.3.1



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