gallium/winsys/drm: Prepare for passing prime fds in winsys_handle

Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

3 files changed, 17 insertions, 1 deletions

diff --git a/src/gallium/winsys/i915/drm/i915_drm_buffer.c b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
index ac66af3..38e0619 100644
--- a/src/gallium/winsys/i915/drm/i915_drm_buffer.c
+++ b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
@@ -95,9 +95,13 @@ i915_drm_buffer_from_handle(struct i915_winsys *iws,
                             unsigned *stride)
 {
    struct i915_drm_winsys *idws = i915_drm_winsys(iws);
-   struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
+   struct i915_drm_buffer *buf;
    uint32_t tile = 0, swizzle = 0;
 
+   if (whandle->type != DRM_API_HANDLE_TYPE_SHARED)
+      return NULL;
+
+   buf = CALLOC_STRUCT(i915_drm_buffer);
    if (!buf)
       return NULL;
 
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index 3019a52..744df1b 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -877,6 +877,9 @@ static struct pb_buffer *radeon_winsys_bo_from_handle(struct radeon_winsys *rws,
 
     memset(&open_arg, 0, sizeof(open_arg));
 
+    if (whandle->type != DRM_API_HANDLE_TYPE_SHARED)
+        return NULL;
+
     /* We must maintain a list of pairs <handle, bo>, so that we always return
      * the same BO for one particular handle. If we didn't do that and created
      * more than one BO for the same handle and then relocated them in a CS,
@@ -991,6 +994,9 @@ static boolean radeon_winsys_bo_get_handle(struct pb_buffer *buffer,
         whandle->handle = bo->flink;
     } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
         whandle->handle = bo->handle;
+    } else if (whandle->type == DRM_API_HANDLE_TYPE_FD) {
+        /* TODO: Implement */
+        return FALSE;
     }
 
     whandle->stride = stride;
diff --git a/src/gallium/winsys/svga/drm/vmw_screen_dri.c b/src/gallium/winsys/svga/drm/vmw_screen_dri.c
index 511cca7..6323a8a 100644
--- a/src/gallium/winsys/svga/drm/vmw_screen_dri.c
+++ b/src/gallium/winsys/svga/drm/vmw_screen_dri.c
@@ -163,6 +163,12 @@ vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
     int ret;
     int i;
 
+    if (whandle->type != DRM_API_HANDLE_TYPE_SHARED) {
+        vmw_error("Attempt to import unknown handle type %d\n",
+                  whandle->type);
+        return NULL;
+    }
+
     /**
      * The vmware device specific handle is the hardware SID.
      * FIXME: We probably want to move this to the ioctl implementations.