commit fc4922793f1871577bb44b1d69ec3801acb23eb6
author Dave Airlie <airlied@redhat.com> Sat Jun 17 11:01:01 2017 +1000
committer Dave Airlie <airlied@redhat.com> Thu Jun 29 05:32:34 2017 +1000
tree 065a467df0d8341e14a51c898c2708d8b0546101
parent 3832374dafb8d0b1b69d8856be28352514afab5d

libdrm: add drm syncobj create/destroy/import/export

These ioctls are now in drm next so add the first set of libdrm APIs.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

xf86drm.c

diff --git a/xf86drm.c b/xf86drm.c
index 728ac78..2ac3f26 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -4146,3 +4146,84 @@
     return strdup(node);
 #endif
 }
+
+int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle)
+{
+    struct drm_syncobj_create args;
+    int ret;
+
+    memclear(args);
+    args.flags = flags;
+    args.handle = 0;
+    ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_CREATE, &args);
+    if (ret)
+	return ret;
+    *handle = args.handle;
+    return 0;
+}
+
+int drmSyncobjDestroy(int fd, uint32_t handle)
+{
+    struct drm_syncobj_destroy args;
+
+    memclear(args);
+    args.handle = handle;
+    return drmIoctl(fd, DRM_IOCTL_SYNCOBJ_DESTROY, &args);
+}
+
+int drmSyncobjHandleToFD(int fd, uint32_t handle, int *obj_fd)
+{
+    struct drm_syncobj_handle args;
+    int ret;
+
+    memclear(args);
+    args.fd = -1;
+    args.handle = handle;
+    ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, &args);
+    if (ret)
+	return ret;
+    *obj_fd = args.fd;
+    return 0;
+}
+
+int drmSyncobjFDToHandle(int fd, int obj_fd, uint32_t *handle)
+{
+    struct drm_syncobj_handle args;
+    int ret;
+
+    memclear(args);
+    args.fd = obj_fd;
+    args.handle = 0;
+    ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, &args);
+    if (ret)
+	return ret;
+    *handle = args.handle;
+    return 0;
+}
+
+int drmSyncobjImportSyncFile(int fd, uint32_t handle, int sync_file_fd)
+{
+    struct drm_syncobj_handle args;
+
+    memclear(args);
+    args.fd = sync_file_fd;
+    args.handle = handle;
+    args.flags = DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE;
+    return drmIoctl(fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, &args);
+}
+
+int drmSyncobjExportSyncFile(int fd, uint32_t handle, int *sync_file_fd)
+{
+    struct drm_syncobj_handle args;
+    int ret;
+
+    memclear(args);
+    args.fd = -1;
+    args.handle = handle;
+    args.flags = DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE;
+    ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, &args);
+    if (ret)
+	return ret;
+    *sync_file_fd = args.fd;
+    return 0;
+}

xf86drm.h

diff --git a/xf86drm.h b/xf86drm.h
index 74f54f1..2855a3e 100644
--- a/xf86drm.h
+++ b/xf86drm.h
@@ -853,6 +853,14 @@
 
 extern int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b);
 
+extern int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle);
+extern int drmSyncobjDestroy(int fd, uint32_t handle);
+extern int drmSyncobjHandleToFD(int fd, uint32_t handle, int *obj_fd);
+extern int drmSyncobjFDToHandle(int fd, int obj_fd, uint32_t *handle);
+
+extern int drmSyncobjImportSyncFile(int fd, uint32_t handle, int sync_file_fd);
+extern int drmSyncobjExportSyncFile(int fd, uint32_t handle, int *sync_file_fd);
+
 #if defined(__cplusplus)
 }
 #endif