omap: add dmabuf support

Signed-off-by: Rob Clark <rob@ti.com>

diff --git a/omap/omap_drm.c b/omap/omap_drm.c
index 96e18717697e6f1410310b48dd9018e5ba4ae1f1..336da115ae1a9d70210130f8f126df180600fbe6 100644 (file)
--- a/omap/omap_drm.c
+++ b/omap/omap_drm.c
@@ -34,6 +34,7 @@
 #include <linux/stddef.h>
 #include <errno.h>
 #include <sys/mman.h>
+#include <fcntl.h>
 
 #include <xf86drm.h>
 
@@ -56,6 +57,7 @@ struct omap_bo {
        uint32_t        handle;
        uint32_t        name;           /* flink global handle (DRI2 name) */
        uint64_t        offset;         /* offset to mmap() */
+       int             fd;             /* dmabuf handle */
 };
 
 struct omap_device * omap_device_new(int fd)
@@ -264,6 +266,25 @@ uint32_t omap_bo_handle(struct omap_bo *bo)
        return bo->handle;
 }
 
+int omap_bo_dmabuf(struct omap_bo *bo)
+{
+       if (!bo->fd) {
+               struct drm_prime_handle req = {
+                               .handle = bo->handle,
+                               .flags = DRM_CLOEXEC,
+               };
+               int ret;
+
+               ret = drmIoctl(bo->dev->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &req);
+               if (ret) {
+                       return ret;
+               }
+
+               bo->fd = req.fd;
+       }
+       return bo->fd;
+}
+
 uint32_t omap_bo_size(struct omap_bo *bo)
 {
        if (!bo->size) {

diff --git a/omap/omap_drmif.h b/omap/omap_drmif.h
index eb75a80ac64fc9b83a53c7d8f8c48caecf262d89..1e03eee14127d4a3c51686bdf2b3bd67ffcfdb4d 100644 (file)
--- a/omap/omap_drmif.h
+++ b/omap/omap_drmif.h
@@ -53,6 +53,7 @@ struct omap_bo * omap_bo_from_name(struct omap_device *dev, uint32_t name);
 void omap_bo_del(struct omap_bo *bo);
 int omap_bo_get_name(struct omap_bo *bo, uint32_t *name);
 uint32_t omap_bo_handle(struct omap_bo *bo);
+int omap_bo_dmabuf(struct omap_bo *bo);
 uint32_t omap_bo_size(struct omap_bo *bo);
 void * omap_bo_map(struct omap_bo *bo);
 int omap_bo_cpu_prep(struct omap_bo *bo, enum omap_gem_op op);