[Mesa-dev] [PATCH 1/4] ac/gpu: add code to detect if kernel supports sync objects.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/amd/common/ac_gpu_info.c | 9 +++++++++
 src/amd/common/ac_gpu_info.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/src/amd/common/ac_gpu_info.c b/src/amd/common/ac_gpu_info.c
index ced7183..929dfd2 100644
--- a/src/amd/common/ac_gpu_info.c
+++ b/src/amd/common/ac_gpu_info.c
@@ -84,6 +84,14 @@ static unsigned cik_get_num_tile_pipes(struct amdgpu_gpu_info *info)
    }
 }
 
+static bool has_syncobj(int fd)
+{
+	uint64_t value;
+	if (drmGetCap(fd, DRM_CAP_SYNCOBJ, &value))
+		return false;
+	return value ? true : false;
+}
+
 bool ac_query_gpu_info(int fd, amdgpu_device_handle dev,
 		       struct radeon_info *info,
 		       struct amdgpu_gpu_info *amdinfo)
@@ -258,6 +266,7 @@ bool ac_query_gpu_info(int fd, amdgpu_device_handle dev,
 	info->vce_fw_version =
 		vce.available_rings ? vce_version : 0;
 	info->has_userptr = true;
+	info->has_syncobj = has_syncobj(fd);
 	info->num_render_backends = amdinfo->rb_pipes;
 	info->clock_crystal_freq = amdinfo->gpu_counter_freq;
 	if (!info->clock_crystal_freq) {
diff --git a/src/amd/common/ac_gpu_info.h b/src/amd/common/ac_gpu_info.h
index 72a8506..20907c2 100644
--- a/src/amd/common/ac_gpu_info.h
+++ b/src/amd/common/ac_gpu_info.h
@@ -76,6 +76,7 @@ struct radeon_info {
 	uint32_t                    drm_minor;
 	uint32_t                    drm_patchlevel;
 	bool                        has_userptr;
+	bool                        has_syncobj;
 
 	/* Shader cores. */
 	uint32_t                    r600_max_quad_pipes; /* wave size / 16 */
-- 
2.9.4