[PATCH] drm/amdgpu:set preemption flag bit

[Monk Liu]

UMD need this bit if preemption want supported

Change-Id: Ic657b3e6f46a148ed3cf0e932ccf46f2c5230d7f
Signed-off-by: Monk Liu <Monk.Liu at amd.com>

Conflicts:
	drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 8 ++++++++
 include/uapi/drm/amdgpu_drm.h           | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 58a0b59..85b4c5f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -540,6 +540,14 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
 		return copy_to_user(out, &vce_clk_table,
 				    min((size_t)size, sizeof(vce_clk_table))) ? -EFAULT : 0;
 	}
+
+	case AMDGPU_INFO_PREEMPTION: {
+		if (amdgpu_sriov_vf(adev))
+			ui32 |= AMDGPU_INFO_PREEMPTION_ENALBED;
+		return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT: 0;
+		break;
+	}
+
 	default:
 		DRM_DEBUG_KMS("Invalid request %d\n", info->query);
 		return -EINVAL;
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 667e9bc..2f25c50 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -501,6 +501,10 @@ struct drm_amdgpu_cs_chunk_data {
 #define AMDGPU_INFO_MMR_SH_INDEX_SHIFT	8
 #define AMDGPU_INFO_MMR_SH_INDEX_MASK	0xff
 
+/* Query info about preemption */
+#define AMDGPU_INFO_PREEMPTION          0x1B
+	#define AMDGPU_INFO_PREEMPTION_ENALBED	1
+
 struct drm_amdgpu_query_fw {
 	/** AMDGPU_INFO_FW_* */
 	__u32 fw_type;
-- 
1.9.1