1 files changed, 160 insertions, 0 deletions
diff --git a/hw/xfree86/ramdac/xf86RamDac.c b/hw/xfree86/ramdac/xf86RamDac.c
new file mode 100644
index 000000000..7db16e394
--- /dev/null
+++ b/hw/xfree86/ramdac/xf86RamDac.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright 1998 by Alan Hourihane, Wigan, England.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Alan Hourihane not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Alan Hourihane makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
+ *
+ * Generic RAMDAC access routines.
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/ramdac/xf86RamDac.c,v 1.6 2000/09/26 15:57:21 tsi Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+
+#include "xf86RamDacPriv.h"
+
+int RamDacHWPrivateIndex = -1;
+int RamDacScreenPrivateIndex = -1;
+
+RamDacRecPtr
+RamDacCreateInfoRec()
+{
+    RamDacRecPtr infoRec;
+
+    infoRec = xcalloc(1, sizeof(RamDacRec));
+
+    return infoRec;
+}
+
+RamDacHelperRecPtr
+RamDacHelperCreateInfoRec()
+{
+    RamDacHelperRecPtr infoRec;
+
+    infoRec = xcalloc(1, sizeof(RamDacHelperRec));
+
+    return infoRec;
+}
+
+void 
+RamDacDestroyInfoRec(RamDacRecPtr infoRec)
+{
+    xfree(infoRec);
+}
+
+void 
+RamDacHelperDestroyInfoRec(RamDacHelperRecPtr infoRec)
+{
+    xfree(infoRec);
+}
+
+Bool
+RamDacInit(ScrnInfoPtr pScrn, RamDacRecPtr ramdacPriv)
+{
+    RamDacHWRecPtr ramdacHWPtr;
+    RamDacRegRecPtr ramdacReg;
+    RamDacScreenRecPtr ramdacScrPtr;
+
+    /*
+     * make sure the RamDacRec is allocated
+     */
+    if (!RamDacGetRec(pScrn))
+	return FALSE;
+    ramdacHWPtr = RAMDACHWPTR(pScrn);
+    ramdacReg = &ramdacHWPtr->ModeReg;
+    ramdacScrPtr = ((RamDacScreenRecPtr)
+			(pScrn)->privates[RamDacGetScreenIndex()].ptr);
+    ramdacScrPtr->RamDacRec = ramdacPriv;
+
+    return(TRUE);
+}
+
+void
+RamDacGetRecPrivate()
+{
+    if (RamDacHWPrivateIndex < 0)
+	RamDacHWPrivateIndex = xf86AllocateScrnInfoPrivateIndex();
+    if (RamDacScreenPrivateIndex < 0)
+	RamDacScreenPrivateIndex = xf86AllocateScrnInfoPrivateIndex();
+    return;
+}
+
+Bool
+RamDacGetRec(ScrnInfoPtr scrp)
+{
+    RamDacRegRecPtr regp;
+    
+    RamDacGetRecPrivate();
+    /*
+     * New privates are always set to NULL, so we can check if the allocation
+     * has already been done.
+     */
+    if (scrp->privates[RamDacHWPrivateIndex].ptr != NULL)
+	return TRUE;
+    if (scrp->privates[RamDacScreenPrivateIndex].ptr != NULL)
+	return TRUE;
+
+    scrp->privates[RamDacHWPrivateIndex].ptr = 
+					xnfcalloc(sizeof(RamDacHWRec), 1);
+    scrp->privates[RamDacScreenPrivateIndex].ptr = 
+					xnfcalloc(sizeof(RamDacScreenRec), 1);
+    /* Does this really belong here? */
+    regp = &((RamDacHWRecPtr)scrp->privates[RamDacHWPrivateIndex].ptr)->ModeReg;
+    
+    return TRUE;
+}
+
+void
+RamDacFreeRec(ScrnInfoPtr pScrn)
+{
+    RamDacHWRecPtr ramdacHWPtr;
+    RamDacScreenRecPtr ramdacScrPtr;
+
+    if (RamDacHWPrivateIndex < 0)
+	return;
+
+    if (RamDacScreenPrivateIndex < 0)
+	return;
+
+    ramdacHWPtr = RAMDACHWPTR(pScrn);
+    ramdacScrPtr = ((RamDacScreenRecPtr)
+				(pScrn)->privates[RamDacGetScreenIndex()].ptr);
+    
+    if (ramdacHWPtr)
+	xfree(ramdacHWPtr);
+    ramdacHWPtr = NULL;
+
+    if (ramdacScrPtr)
+	xfree(ramdacScrPtr);
+    ramdacScrPtr = NULL;
+}
+
+int
+RamDacGetHWIndex()
+{
+    return RamDacHWPrivateIndex;
+}
+
+int
+RamDacGetScreenIndex()
+{
+    return RamDacScreenPrivateIndex;
+}