Add a chain loading module to load new vmwgfx driver if kernel module is loaded

3 files changed, 184 insertions, 34 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 48ec1b0..17677f7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,31 +23,38 @@
 # -avoid-version prevents gratuitous .0.0.0 version numbers on the end
 # _ladir passes a dummy rpath to libtool so the thing will actually link
 # TODO: -nostdlib/-Bstatic/-lgcc platform magic, not installing the .a, etc.
-AM_CFLAGS = @XORG_CFLAGS@
+AM_CFLAGS = @XORG_CFLAGS@ @DRM_CFLAGS@
+
+vmwlegacy_drv_la_LTLIBRARIES = vmwlegacy_drv.la
+vmwlegacy_drv_la_LDFLAGS = -module -avoid-version
+vmwlegacy_drv_ladir = @moduledir@/drivers
+
+vmwlegacy_drv_la_SOURCES = \
+	bits2pixels.c \
+	bits2pixels.h \
+	guest_os.h \
+	includeCheck.h \
+	svga_escape.h \
+	svga_limits.h \
+	svga_modes.h \
+	svga_overlay.h \
+	svga_reg.h \
+	svga_struct.h \
+	vm_basic_types.h \
+	vm_device_version.h \
+	vmware.c \
+	vmwarecurs.c \
+	vmware.h \
+	vmwarectrl.c \
+	vmwarectrl.h \
+	vmwarectrlproto.h \
+	vmwarexinerama.c \
+	vmwarevideo.c \
+	vmwaremodes.c
+
 vmware_drv_la_LTLIBRARIES = vmware_drv.la
 vmware_drv_la_LDFLAGS = -module -avoid-version
 vmware_drv_ladir = @moduledir@/drivers
 
 vmware_drv_la_SOURCES = \
-         bits2pixels.c \
-         bits2pixels.h \
-         guest_os.h \
-         includeCheck.h \
-	 svga_escape.h \
-         svga_limits.h \
-         svga_modes.h \
-	 svga_overlay.h \
-         svga_reg.h \
-         svga_struct.h \
-         vm_basic_types.h \
-         vm_device_version.h \
-         vmware.c \
-         vmwarecurs.c \
-         vmware.h \
-         vmwarectrl.c \
-         vmwarectrl.h \
-         vmwarectrlproto.h \
-         vmwarexinerama.c \
-         vmwarevideo.c \
-         vmwaremodes.c
-
+	vmwaremodule.c
diff --git a/src/vmware.c b/src/vmware.c
index bae2d56..0785456 100644
--- a/src/vmware.c
+++ b/src/vmware.c
@@ -81,8 +81,8 @@ char rcsId_vmware[] =
 #define VMW_INNERSTRINGIFY(s) #s
 #define VMW_STRING(str) VMW_INNERSTRINGIFY(str)
 
-#define VMWARE_NAME "VMWARE"
-#define VMWARE_DRIVER_NAME "vmware"
+#define VMWARE_NAME "vmwlegacy"
+#define VMWARE_DRIVER_NAME "vmwlegacy"
 #define VMWARE_MAJOR_VERSION	10
 #define VMWARE_MINOR_VERSION	16
 #define VMWARE_PATCHLEVEL	9
@@ -188,8 +188,8 @@ static const char *shadowfbSymbols[] = {
 #endif /* HAVE_XORG_SERVER_1_7_0 */
 
 #ifdef XFree86LOADER
-static XF86ModuleVersionInfo vmwareVersRec = {
-    "vmware",
+static XF86ModuleVersionInfo vmwlegacyVersRec = {
+    VMWARE_DRIVER_NAME,
     MODULEVENDORSTRING,
     MODINFOSTRING1,
     MODINFOSTRING2,
@@ -2021,7 +2021,7 @@ VMWAREProbe(DriverPtr drv, int flags)
 #endif
 
 
-_X_EXPORT DriverRec VMWARE = {
+_X_EXPORT DriverRec vmwlegacy = {
     VMWARE_DRIVER_VERSION,
     VMWARE_DRIVER_NAME,
     VMWAREIdentify,
@@ -2043,22 +2043,23 @@ _X_EXPORT DriverRec VMWARE = {
 };
 
 #ifdef XFree86LOADER
-static MODULESETUPPROTO(vmwareSetup);
+static MODULESETUPPROTO(vmwlegacySetup);
 
-_X_EXPORT XF86ModuleData vmwareModuleData = {
-    &vmwareVersRec,
-    vmwareSetup,
+_X_EXPORT XF86ModuleData vmwlegacyModuleData = {
+    &vmwlegacyVersRec,
+    vmwlegacySetup,
     NULL
 };
 
 static pointer
-vmwareSetup(pointer module, pointer opts, int *errmaj, int *errmin)
+vmwlegacySetup(pointer module, pointer opts, int *errmaj, int *errmin)
 {
     static Bool setupDone = FALSE;
 
     if (!setupDone) {
         setupDone = TRUE;
-        xf86AddDriver(&VMWARE, module, VMWARE_DRIVER_FUNC);
+
+        xf86AddDriver(&vmwlegacy, module, VMWARE_DRIVER_FUNC);
 
         LoaderRefSymLists(vgahwSymbols, fbSymbols, ramdacSymbols,
                           shadowfbSymbols, NULL);
diff --git a/src/vmwaremodule.c b/src/vmwaremodule.c
new file mode 100644
index 0000000..826310b
--- /dev/null
+++ b/src/vmwaremodule.c
@@ -0,0 +1,142 @@
+/**********************************************************
+ * Copyright 2010 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.
+ *
+ **********************************************************/
+
+#include <xorg-server.h>
+#include <xf86.h>
+#include <xf86drm.h>
+
+
+/*
+ * Defines and exported module info.
+ */
+
+#define VMWARE_DRIVER_NAME    "vmware"
+#define VMWGFX_DRIVER_NAME    "vmwgfx"
+#define VMWLEGACY_DRIVER_NAME "vmwlegacy"
+
+#define VMWARE_VERSION_MAJOR 10
+#define VMWARE_VERSION_MINOR 16
+#define VMWARE_VERSION_PATCH 9
+
+static XF86ModuleVersionInfo vmware_version;
+static MODULESETUPPROTO(vmware_setup);
+
+_X_EXPORT XF86ModuleData vmwareModuleData = {
+    &vmware_version,
+    vmware_setup,
+    NULL
+};
+
+
+/*
+ * Chain loading functions
+ */
+
+static Bool
+vmware_check_kernel_module()
+{
+    /* Super simple way of knowing if the kernel driver is loaded */
+    int ret = drmOpen("vmwgfx", NULL);
+    if (ret < 0)
+	return FALSE;
+
+    drmClose(ret);
+
+    return TRUE;
+}
+
+static Bool
+vmware_chain_module(pointer opts)
+{
+    int vmwlegacy_devices;
+    int vmwgfx_devices;
+    int vmware_devices;
+    int matched;
+    char *driver_name;
+    GDevPtr *gdevs;
+    GDevPtr gdev;
+    int i;
+
+    vmware_devices = xf86MatchDevice(VMWARE_DRIVER_NAME, &gdevs);
+    vmwgfx_devices = xf86MatchDevice(VMWGFX_DRIVER_NAME, NULL);
+    vmwlegacy_devices = xf86MatchDevice(VMWLEGACY_DRIVER_NAME, NULL);
+
+    if (vmware_check_kernel_module()) {
+	driver_name = VMWGFX_DRIVER_NAME;
+	matched = vmwgfx_devices;
+    } else {
+	driver_name = VMWLEGACY_DRIVER_NAME;
+	matched = vmwlegacy_devices;
+    }
+
+    for (i = 0; i < vmware_devices; i++) {
+	gdev = gdevs[i];
+	gdev->driver = driver_name;
+    }
+
+    xfree(gdevs);
+
+    if (!matched)
+	xf86LoadOneModule(driver_name, opts);
+}
+
+
+/*
+ * Module info
+ */
+
+static XF86ModuleVersionInfo vmware_version = {
+    VMWARE_DRIVER_NAME,
+    MODULEVENDORSTRING,
+    MODINFOSTRING1,
+    MODINFOSTRING2,
+    XORG_VERSION_CURRENT,
+    VMWARE_VERSION_MAJOR, VMWARE_VERSION_MINOR, VMWARE_VERSION_PATCH,
+    ABI_CLASS_VIDEODRV,
+    ABI_VIDEODRV_VERSION,
+    MOD_CLASS_VIDEODRV,
+    {0, 0, 0, 0}
+};
+
+static pointer
+vmware_setup(pointer module, pointer opts, int *errmaj, int *errmin)
+{
+    static Bool setupDone = 0;
+    int ret;
+
+    /* This module should be loaded only once, but check to be sure. */
+    if (!setupDone) {
+	setupDone = 1;
+
+	/* Chain load the real driver */
+	vmware_chain_module(opts);
+
+	return (pointer) 1;
+    } else {
+	if (errmaj)
+	    *errmaj = LDR_ONCEONLY;
+	return NULL;
+    }
+}