vmware/xorg: Create a small driver that sits ontop of st/xorg

1 files changed, 100 insertions, 0 deletions

diff --git a/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c b/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c
new file mode 100644
index 0000000000..969d48157c
--- /dev/null
+++ b/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c
@@ -0,0 +1,100 @@
+/**********************************************************
+ * Copyright 2009 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+/**
+ * @file
+ * Contains the init code for the VMware Xorg driver.
+ *
+ * @author Jakob Bornecrantz <jakob@vmware.com>
+ */
+
+#include "vmw_hook.h"
+#include "vmw_driver.h"
+
+static Bool
+vmw_screen_init(ScrnInfoPtr pScrn)
+{
+    modesettingPtr ms = modesettingPTR(pScrn);
+    struct vmw_driver *vmw;
+
+    /* if gallium is used then we don't need to do anything. */
+    if (ms->screen)
+	return TRUE;
+
+    vmw = xnfcalloc(sizeof(*vmw), 1);
+    if (!vmw)
+	return FALSE;
+
+    vmw->fd = ms->fd;
+    ms->winsys_priv = vmw;
+
+    return TRUE;
+}
+
+static Bool
+vmw_screen_close(ScrnInfoPtr pScrn)
+{
+    modesettingPtr ms = modesettingPTR(pScrn);
+    struct vmw_driver *vmw = vmw_driver(pScrn);
+
+    if (!vmw)
+	return TRUE;
+
+    ms->winsys_priv = NULL;
+    xfree(vmw);
+
+    return TRUE;
+}
+
+/*
+ * Functions for setting up hooks into the xorg state tracker
+ */
+
+static Bool (*vmw_screen_pre_init_saved)(ScrnInfoPtr pScrn, int flags) = NULL;
+
+static Bool
+vmw_screen_pre_init(ScrnInfoPtr pScrn, int flags)
+{
+    modesettingPtr ms;
+
+    pScrn->PreInit = vmw_screen_pre_init_saved;
+    if (!pScrn->PreInit(pScrn, flags))
+	return FALSE;
+
+    ms = modesettingPTR(pScrn);
+    ms->winsys_screen_init = vmw_screen_init;
+    ms->winsys_screen_close = vmw_screen_close;
+
+    return TRUE;
+}
+
+void
+vmw_screen_set_functions(ScrnInfoPtr pScrn)
+{
+    assert(!vmw_screen_pre_init_saved);
+
+    vmw_screen_pre_init_saved = pScrn->PreInit;
+    pScrn->PreInit = vmw_screen_pre_init;
+}