Add VMWARE_CTRL extension.release-10-12-0-0

1 files changed, 402 insertions, 0 deletions

diff --git a/src/vmwarectrl.c b/src/vmwarectrl.c
new file mode 100644
index 0000000..49ccccd
--- /dev/null
+++ b/src/vmwarectrl.c
@@ -0,0 +1,402 @@
+/*
+ * Copyright 2006 by VMware, Inc.
+ *
+ * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+/*
+ * vmwarectrl.c --
+ *
+ *      The implementation of the VMWARE_CTRL protocol extension that
+ *      allows X clients to communicate with the driver.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define NEED_REPLIES
+#define NEED_EVENTS
+#include <X11/X.h>
+#include "dixstruct.h"
+#include "extnsionst.h"
+
+#include "vmware.h"
+#include "vmwarectrlproto.h"
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrlQueryVersion --
+ *
+ *      Implementation of QueryVersion command handler. Initialises and
+ *      sends a reply.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Writes reply to client
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+VMwareCtrlQueryVersion(ClientPtr client)
+{
+   xVMwareCtrlQueryVersionReply rep = { 0, };
+   register int n;
+
+   REQUEST_SIZE_MATCH(xVMwareCtrlQueryVersionReq);
+
+   rep.type = X_Reply;
+   rep.length = 0;
+   rep.sequenceNumber = client->sequence;
+   rep.majorVersion = VMWARE_CTRL_MAJOR_VERSION;
+   rep.minorVersion = VMWARE_CTRL_MINOR_VERSION;
+   if (client->swapped) {
+      swaps(&rep.sequenceNumber, n);
+      swapl(&rep.length, n);
+      swapl(&rep.majorVersion, n);
+      swapl(&rep.minorVersion, n);
+   }
+   WriteToClient(client, sizeof(xVMwareCtrlQueryVersionReply), (char *)&rep);
+
+   return client->noClientException;
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrlDoSetRes --
+ *
+ *      Set the custom resolution into the mode list.
+ *
+ *      This is done by alternately updating one of two dynamic modes. It is
+ *      done this way because the server gets upset if you try to switch
+ *      to a new resolution that has the same index as the current one.
+ *
+ * Results:
+ *      TRUE on success, FALSE otherwise.
+ *
+ * Side effects:
+ *      One dynamic mode will be updated if successful.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static Bool
+VMwareCtrlDoSetRes(ScrnInfoPtr pScrn,
+                   CARD32 x,
+                   CARD32 y)
+{
+   DisplayModePtr mode;
+   VMWAREPtr pVMWARE = VMWAREPTR(pScrn);
+  
+   if (pScrn && pScrn->modes) {
+      /* 
+       * Don't resize larger than possible but don't
+       * return an X Error either.
+       */
+      if (x > pVMWARE->initialMode->HDisplay ||
+          y > pVMWARE->initialMode->VDisplay) {
+         return TRUE;
+      }
+
+      /*
+       * Switch the dynamic modes so that we alternate
+       * which one gets updated on each call.
+       */
+      mode = pVMWARE->dynMode1;
+      pVMWARE->dynMode1 = pVMWARE->dynMode2;
+      pVMWARE->dynMode2 = mode;
+      mode = pVMWARE->dynMode1;
+
+      mode->HDisplay = x;
+      mode->VDisplay = y;
+
+      return TRUE;
+   } else {
+      return FALSE;
+   }
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrlSetRes --
+ *
+ *      Implementation of SetRes command handler. Initialises and sends a
+ *      reply.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Writes reply to client
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+VMwareCtrlSetRes(ClientPtr client)
+{
+   REQUEST(xVMwareCtrlSetResReq);
+   xVMwareCtrlSetResReply rep = { 0, };
+   ScrnInfoPtr pScrn;
+   ExtensionEntry *ext;
+   register int n;
+
+   REQUEST_SIZE_MATCH(xVMwareCtrlSetResReq);
+
+   if (!(ext = CheckExtension(VMWARE_CTRL_PROTOCOL_NAME))) {
+      return BadMatch;
+   }
+
+   pScrn = ext->extPrivate;
+   if (pScrn->scrnIndex != stuff->screen) {
+      return BadMatch;
+   }
+
+   if (!VMwareCtrlDoSetRes(pScrn, stuff->x, stuff->y)) {
+      return BadValue;
+   }
+
+   rep.type = X_Reply;
+   rep.length = (sizeof(xVMwareCtrlSetResReply) - sizeof(xGenericReply)) >> 2;
+   rep.sequenceNumber = client->sequence;
+   rep.screen = stuff->screen;
+   rep.x = stuff->x;
+   rep.y = stuff->y;
+   if (client->swapped) {
+      swaps(&rep.sequenceNumber, n);
+      swapl(&rep.length, n);
+      swapl(&rep.screen, n);
+      swapl(&rep.x, n);
+      swapl(&rep.y, n);
+   }
+   WriteToClient(client, sizeof(xVMwareCtrlSetResReply), (char *)&rep);
+
+   return client->noClientException;
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrlDispatch --
+ *
+ *      Dispatcher for VMWARE_CTRL commands. Calls the correct handler for
+ *      each command type.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Side effects of individual command handlers.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+VMwareCtrlDispatch(ClientPtr client)
+{
+   REQUEST(xReq);
+
+   switch(stuff->data) {
+   case X_VMwareCtrlQueryVersion:
+      return VMwareCtrlQueryVersion(client);
+   case X_VMwareCtrlSetRes:
+      return VMwareCtrlSetRes(client);
+   }
+   return BadRequest;
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * SVMwareCtrlQueryVersion --
+ *
+ *      Wrapper for QueryVersion handler that handles input from other-endian
+ *      clients.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Side effects of unswapped implementation.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+SVMwareCtrlQueryVersion(ClientPtr client)
+{
+   register int n;
+
+   REQUEST(xVMwareCtrlQueryVersionReq);
+   REQUEST_SIZE_MATCH(xVMwareCtrlQueryVersionReq);
+
+   swaps(&stuff->length, n);
+
+   return VMwareCtrlQueryVersion(client);
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * SVMwareCtrlSetRes --
+ *
+ *      Wrapper for SetRes handler that handles input from other-endian
+ *      clients.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Side effects of unswapped implementation.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+SVMwareCtrlSetRes(ClientPtr client)
+{
+   register int n;
+
+   REQUEST(xVMwareCtrlSetResReq);
+   REQUEST_SIZE_MATCH(xVMwareCtrlSetResReq);
+
+   swaps(&stuff->length, n);
+   swapl(&stuff->screen, n);
+   swapl(&stuff->x, n);
+   swapl(&stuff->y, n);
+
+   return VMwareCtrlSetRes(client);
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * SVMwareCtrlDispatch --
+ *
+ *      Wrapper for dispatcher that handles input from other-endian clients.
+ *
+ * Results:
+ *      Standard response codes.
+ *
+ * Side effects:
+ *      Side effects of individual command handlers.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+SVMwareCtrlDispatch(ClientPtr client)
+{
+   REQUEST(xReq);
+
+   switch(stuff->data) {
+   case X_VMwareCtrlQueryVersion:
+      return SVMwareCtrlQueryVersion(client);
+   case X_VMwareCtrlSetRes:
+      return SVMwareCtrlSetRes(client);
+   }
+   return BadRequest;
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrlResetProc --
+ *
+ *      Cleanup handler called when the extension is removed.
+ *
+ * Results:
+ *      None
+ *
+ * Side effects:
+ *      None
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static void
+VMwareCtrlResetProc(ExtensionEntry* extEntry)
+{
+   /* Currently, no cleanup is necessary. */
+}
+
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * VMwareCtrl_ExitInit --
+ *
+ *      Initialiser for the VMWARE_CTRL protocol extension.
+ *
+ * Results:
+ *      None.
+ *
+ * Side effects:
+ *      Protocol extension will be registered if successful.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+void
+VMwareCtrl_ExtInit(ScrnInfoPtr pScrn)
+{
+   ExtensionEntry *myext;
+
+   if (!(myext = CheckExtension(VMWARE_CTRL_PROTOCOL_NAME))) {
+      if (!(myext = AddExtension(VMWARE_CTRL_PROTOCOL_NAME, 0, 0,
+                                 VMwareCtrlDispatch,
+                                 SVMwareCtrlDispatch,
+                                 VMwareCtrlResetProc,
+                                 StandardMinorOpcode))) {
+         xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+                    "Failed to add VMWARE_CTRL extension\n");
+	 return;
+      }
+
+      /*
+       * For now, only support one screen as that's all the virtual
+       * hardware supports.
+       */
+      myext->extPrivate = pScrn;
+
+      xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+                 "Initialized VMWARE_CTRL extension version %d.%d\n",
+                 VMWARE_CTRL_MAJOR_VERSION, VMWARE_CTRL_MINOR_VERSION);
+   }
+}