[PATCH 2/2] drm/amdgpu: keep the stolen memory in visible vram region

[Tianci Yin]

From: "Tianci.Yin" <tianci.yin at amd.com>

stolen memory should be fixed in visible region.

Change-Id: Icbbbd39fd113e93423aad8d2555f4073c08020e5
Signed-off-by: Tianci.Yin <tianci.yin at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h     | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++--
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c   | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 11e0fc0..d1a8f87 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -817,6 +817,7 @@ struct amdgpu_device {
 	uint8_t				*bios;
 	uint32_t			bios_size;
 	struct amdgpu_bo		*stolen_vga_memory;
+	void				*stolen_vga_buf;
 	uint32_t			bios_scratch_reg_offset;
 	uint32_t			bios_scratch[AMDGPU_BIOS_NUM_SCRATCH];
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 801f912..5ac9a66 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1787,7 +1787,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	r = amdgpu_bo_create_kernel(adev, adev->gmc.stolen_size, PAGE_SIZE,
 				    AMDGPU_GEM_DOMAIN_VRAM,
 				    &adev->stolen_vga_memory,
-				    NULL, NULL);
+				    NULL, &adev->stolen_vga_buf);
 	if (r)
 		return r;
 	DRM_INFO("amdgpu: %uM of VRAM memory ready\n",
@@ -1852,7 +1852,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 void amdgpu_ttm_late_init(struct amdgpu_device *adev)
 {
 	/* return the VGA stolen memory (if any) back to VRAM */
-	amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, NULL);
+	amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, &adev->stolen_vga_buf);
 }
 
 /**
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index f77138b..602d7c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1280,7 +1280,7 @@ static int gmc_v9_0_sw_fini(void *handle)
 	amdgpu_vm_manager_fini(adev);
 
 	if (gmc_v9_0_keep_stolen_memory(adev))
-		amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, NULL);
+		amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, &adev->stolen_vga_buf);
 
 	amdgpu_gart_table_vram_free(adev);
 	amdgpu_bo_fini(adev);
-- 
2.7.4