From fc4922793f1871577bb44b1d69ec3801acb23eb6 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Sat, 17 Jun 2017 11:01:01 +1000
Subject: [PATCH] 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 | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 xf86drm.h |  8 ++++++
 2 files changed, 89 insertions(+)

diff --git a/xf86drm.c b/xf86drm.c
index 728ac78c..2ac3f265 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -4146,3 +4146,84 @@ char *drmGetDeviceNameFromFd2(int fd)
     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;
+}
diff --git a/xf86drm.h b/xf86drm.h
index 74f54f17..2855a3ee 100644
--- a/xf86drm.h
+++ b/xf86drm.h
@@ -853,6 +853,14 @@ extern int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_device
 
 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