[PATCH] libdrm: add drm syncobj create/destroy/import/export

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

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

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 include/drm/drm.h | 26 ++++++++++++++++++
 xf86drm.c         | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 xf86drm.h         |  8 ++++++
 3 files changed, 115 insertions(+)

diff --git a/include/drm/drm.h b/include/drm/drm.h
index 1e7a4bc..bf3674a 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -642,6 +642,7 @@ struct drm_gem_open {
 #define DRM_CAP_ADDFB2_MODIFIERS	0x10
 #define DRM_CAP_PAGE_FLIP_TARGET	0x11
 #define DRM_CAP_CRTC_IN_VBLANK_EVENT	0x12
+#define DRM_CAP_SYNCOBJ		0x13
 
 /** DRM_IOCTL_GET_CAP ioctl argument type */
 struct drm_get_cap {
@@ -691,6 +692,26 @@ struct drm_prime_handle {
 	__s32 fd;
 };
 
+struct drm_syncobj_create {
+	__u32 handle;
+	__u32 flags;
+};
+
+struct drm_syncobj_destroy {
+	__u32 handle;
+	__u32 pad;
+};
+
+#define DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE (1 << 0)
+#define DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE (1 << 0)
+struct drm_syncobj_handle {
+	__u32 handle;
+	__u32 flags;
+
+	__s32 fd;
+	__u32 pad;
+};
+
 #if defined(__cplusplus)
 }
 #endif
@@ -809,6 +830,11 @@ extern "C" {
 #define DRM_IOCTL_MODE_CREATEPROPBLOB	DRM_IOWR(0xBD, struct drm_mode_create_blob)
 #define DRM_IOCTL_MODE_DESTROYPROPBLOB	DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
 
+#define DRM_IOCTL_SYNCOBJ_CREATE	DRM_IOWR(0xBF, struct drm_syncobj_create)
+#define DRM_IOCTL_SYNCOBJ_DESTROY	DRM_IOWR(0xC0, struct drm_syncobj_destroy)
+#define DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD	DRM_IOWR(0xC1, struct drm_syncobj_handle)
+#define DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE	DRM_IOWR(0xC2, struct drm_syncobj_handle)
+
 /**
  * Device specific ioctls should only be in their respective headers
  * The device specific ioctl range is from 0x40 to 0x9f.
diff --git a/xf86drm.c b/xf86drm.c
index 728ac78..2ac3f26 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 74f54f1..2855a3e 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
-- 
2.9.4