1 files changed, 83 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c b/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
index c84368bab7..ab2b5fadc4 100644
--- a/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
+++ b/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
@@ -56,6 +56,89 @@ struct vmw_dma_buffer
     uint32_t size;
 };
 
+static int
+vmw_ioctl_get_param(struct vmw_driver *vmw, uint32_t param, uint64_t *out)
+{
+    struct drm_vmw_getparam_arg gp_arg;
+    int ret;
+
+    memset(&gp_arg, 0, sizeof(gp_arg));
+    gp_arg.param = param;
+    ret = drmCommandWriteRead(vmw->fd, DRM_VMW_GET_PARAM,
+	    &gp_arg, sizeof(gp_arg));
+
+    if (ret == 0) {
+	*out = gp_arg.value;
+    }
+
+    return ret;
+}
+
+int
+vmw_ioctl_supports_streams(struct vmw_driver *vmw)
+{
+    uint64_t value;
+    int ret;
+
+    ret = vmw_ioctl_get_param(vmw, DRM_VMW_PARAM_NUM_STREAMS, &value);
+    if (ret)
+	return ret;
+
+    return value ? 0 : -ENOSYS;
+}
+
+int
+vmw_ioctl_num_streams(struct vmw_driver *vmw,
+		      uint32_t *ntot, uint32_t *nfree)
+{
+    uint64_t v1, v2;
+    int ret;
+
+    ret = vmw_ioctl_get_param(vmw, DRM_VMW_PARAM_NUM_STREAMS, &v1);
+    if (ret)
+	return ret;
+
+    ret = vmw_ioctl_get_param(vmw, DRM_VMW_PARAM_NUM_FREE_STREAMS, &v2);
+    if (ret)
+	return ret;
+
+    *ntot = (uint32_t)v1;
+    *nfree = (uint32_t)v2;
+
+    return 0;
+}
+
+int
+vmw_ioctl_claim_stream(struct vmw_driver *vmw, uint32_t *out)
+{
+    struct drm_vmw_stream_arg s_arg;
+    int ret;
+
+    ret = drmCommandRead(vmw->fd, DRM_VMW_CLAIM_STREAM,
+			 &s_arg, sizeof(s_arg));
+
+    if (ret)
+	return -1;
+
+    *out = s_arg.stream_id;
+    return 0;
+}
+
+int
+vmw_ioctl_unref_stream(struct vmw_driver *vmw, uint32_t stream_id)
+{
+    struct drm_vmw_stream_arg s_arg;
+    int ret;
+
+    memset(&s_arg, 0, sizeof(s_arg));
+    s_arg.stream_id = stream_id;
+
+    ret = drmCommandRead(vmw->fd, DRM_VMW_CLAIM_STREAM,
+			 &s_arg, sizeof(s_arg));
+
+    return 0;
+}
+
 int
 vmw_ioctl_cursor_bypass(struct vmw_driver *vmw, int xhot, int yhot)
 {