[PATCH 3/7] drm/amdgpu:impl static CSA alloc/dealloc

[Monk Liu]

for SRIOV usage, CSA is only used per device and each
VM will map on it.

Change-Id: I0736b6e51329d643343e26968a47a81c3a27035f
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 0bfec66..a6bce36 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -20,4 +20,25 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
-#include "amdgpu.h"
\ No newline at end of file
+#include "amdgpu.h"
+static int amdgpu_allocate_static_csa(struct amdgpu_device *adev)
+{
+	int r;
+	void *ptr;
+
+	r = amdgpu_bo_create_kernel(adev, adev->virt.csa_size, PAGE_SIZE,
+				AMDGPU_GEM_DOMAIN_VRAM, &adev->virt.csa_obj,
+				&adev->virt.csa_vmid0_addr, &ptr);
+	if (r)
+		return r;
+
+	/* gds part take the bottom half buffer */
+	adev->virt.gds_vmid0_addr = adev->virt.csa_vmid0_addr + PAGE_SIZE;
+	memset(ptr, 0, adev->virt.csa_size);
+	return 0;
+}
+
+static void amdgpu_deallocate_static_csa(struct amdgpu_device *adev)
+{
+	amdgpu_bo_free_kernel(&adev->virt.csa_obj, &adev->virt.csa_vmid0_addr, NULL);
+}
-- 
2.7.4