Initial revisionXORG-STABLE

3 files changed, 782 insertions, 0 deletions

diff --git a/man/suncg14.man b/man/suncg14.man
new file mode 100644
index 0000000..fa14e1c
--- /dev/null
+++ b/man/suncg14.man
@@ -0,0 +1,30 @@
+.\" $XFree86: xc/programs/Xserver/hw/xfree86/drivers/suncg14/suncg14.man,v 1.2 2001/01/27 18:20:53 dawes Exp $ 
+.\" shorthand for double quote that works everywhere.
+.ds q \N'34'
+.TH SUNCG14 __drivermansuffix__ __vendorversion__
+.SH NAME
+suncg14 \- CG14 video driver
+.SH SYNOPSIS
+.nf
+.B "Section \*qDevice\*q"
+.BI "  Identifier \*q"  devname \*q
+.B  "  Driver \*qsuncg14\*q"
+\ \ ...
+.B EndSection
+.fi
+.SH DESCRIPTION
+.B suncg14
+is an XFree86 driver for Sun CG14 video cards.
+THIS MAN PAGE NEEDS TO BE FILLED IN.
+.SH SUPPORTED HARDWARE
+The
+.B suncg14
+driver supports...
+.SH CONFIGURATION DETAILS
+Please refer to XF86Config(__filemansuffix__) for general configuration
+details.  This section only covers configuration details specific to this
+driver.
+.SH "SEE ALSO"
+XFree86(1), XF86Config(__filemansuffix__), xf86config(1), Xserver(1), X(__miscmansuffix__)
+.SH AUTHORS
+Authors include: Jakub Jelinek <jakub@redhat.com>
diff --git a/src/cg14.h b/src/cg14.h
new file mode 100644
index 0000000..d4a6034
--- /dev/null
+++ b/src/cg14.h
@@ -0,0 +1,74 @@
+/*
+ * CG14 framebuffer - defines.
+ *
+ * Copyright (C) 2000 Jakub Jelinek (jakub@redhat.com)
+ *
+ * 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
+ * JAKUB JELINEK 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.
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/suncg14/cg14.h,v 1.3 2001/05/04 19:05:45 dawes Exp $ */
+
+#ifndef CG14_H
+#define CG14_H
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "xf86RamDac.h"
+#include "Xmd.h"
+#include "gcstruct.h"
+#include "xf86sbusBus.h"
+
+/* Various offsets in virtual (ie. mmap()) spaces Linux and Solaris support. */
+#define CG14_REGS_VOFF		0x00000000	/* registers */
+#define CG14_XLUT_VOFF		0x00003000	/* X Look Up Table */
+#define CG14_CLUT1_VOFF		0x00004000	/* Color Look Up Table */
+#define CG14_CLUT2_VOFF		0x00005000	/* Color Look Up Table */
+#define CG14_CLUT3_VOFF		0x00006000	/* Color Look Up Table */
+#define CG14_DIRECT_VOFF	0x10000000
+#define CG14_CTLREG_VOFF	0x20000000
+#define CG14_CURSOR_VOFF	0x30000000
+#define CG14_SHDW_VRT_VOFF	0x40000000
+#define CG14_XBGR_VOFF		0x50000000
+#define CG14_BGR_VOFF		0x60000000
+#define CG14_X16_VOFF		0x70000000
+#define CG14_C16_VOFF		0x80000000
+#define CG14_X32_VOFF		0x90000000
+#define CG14_B32_VOFF		0xa0000000
+#define CG14_G32_VOFF		0xb0000000
+#define CG14_R32_VOFF		0xc0000000
+
+typedef struct {
+	unsigned int	*fb;
+	unsigned char	*x32;
+	unsigned char	*xlut;
+	int		width;
+	int		height;
+	sbusDevicePtr	psdp;
+	CloseScreenProcPtr CloseScreen;
+	OptionInfoPtr	Options;
+} Cg14Rec, *Cg14Ptr;
+
+#define GET_CG14_FROM_SCRN(p)    ((Cg14Ptr)((p)->driverPrivate))
+
+/*
+ * This should match corresponding definition in Solaris's
+ * '/usr/include/sys/cg14io.h'.
+ */
+#define CG14_SET_PIXELMODE	(('M' << 8) | 3)
+
+#endif /* CG14_H */
diff --git a/src/cg14_driver.c b/src/cg14_driver.c
new file mode 100644
index 0000000..18e7304
--- /dev/null
+++ b/src/cg14_driver.c
@@ -0,0 +1,678 @@
+/*
+ * CG14 framebuffer driver.
+ *
+ * Copyright (C) 2000 Jakub Jelinek (jakub@redhat.com)
+ *
+ * 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
+ * JAKUB JELINEK 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.
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/suncg14/cg14_driver.c,v 1.6 2001/10/01 13:44:10 eich Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "xf86Version.h"
+#include "mipointer.h"
+#include "mibstore.h"
+#include "micmap.h"
+
+#include "fb.h"
+#include "xf86cmap.h"
+#include "cg14.h"
+
+static const OptionInfoRec * CG14AvailableOptions(int chipid, int busid);
+static void	CG14Identify(int flags);
+static Bool	CG14Probe(DriverPtr drv, int flags);
+static Bool	CG14PreInit(ScrnInfoPtr pScrn, int flags);
+static Bool	CG14ScreenInit(int Index, ScreenPtr pScreen, int argc,
+			      char **argv);
+static Bool	CG14EnterVT(int scrnIndex, int flags);
+static void	CG14LeaveVT(int scrnIndex, int flags);
+static Bool	CG14CloseScreen(int scrnIndex, ScreenPtr pScreen);
+static Bool	CG14SaveScreen(ScreenPtr pScreen, int mode);
+static void	CG14InitCplane24(ScrnInfoPtr pScrn);
+static void	CG14ExitCplane24(ScrnInfoPtr pScrn);
+
+/* Required if the driver supports mode switching */
+static Bool	CG14SwitchMode(int scrnIndex, DisplayModePtr mode, int flags);
+/* Required if the driver supports moving the viewport */
+static void	CG14AdjustFrame(int scrnIndex, int x, int y, int flags);
+
+/* Optional functions */
+static void	CG14FreeScreen(int scrnIndex, int flags);
+static int	CG14ValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose,
+			     int flags);
+
+void CG14Sync(ScrnInfoPtr pScrn);
+
+#define VERSION 4000
+#define CG14_NAME "SUNCG14"
+#define CG14_DRIVER_NAME "suncg14"
+#define CG14_MAJOR_VERSION 1
+#define CG14_MINOR_VERSION 0
+#define CG14_PATCHLEVEL 0
+
+/* 
+ * This contains the functions needed by the server after loading the driver
+ * module.  It must be supplied, and gets passed back by the SetupProc
+ * function in the dynamic case.  In the static case, a reference to this
+ * is compiled in, and this requires that the name of this DriverRec be
+ * an upper-case version of the driver name.
+ */
+
+DriverRec SUNCG14 = {
+    VERSION,
+    CG14_DRIVER_NAME,
+    CG14Identify,
+    CG14Probe,
+    CG14AvailableOptions,
+    NULL,
+    0
+};
+
+static const OptionInfoRec CG14Options[] = {
+    { -1,			NULL,		OPTV_NONE,	{0}, FALSE }
+};
+
+#ifdef XFree86LOADER
+
+static MODULESETUPPROTO(cg14Setup);
+
+static XF86ModuleVersionInfo suncg14VersRec =
+{
+	"suncg14",
+	MODULEVENDORSTRING,
+	MODINFOSTRING1,
+	MODINFOSTRING2,
+	XF86_VERSION_CURRENT,
+	CG14_MAJOR_VERSION, CG14_MINOR_VERSION, CG14_PATCHLEVEL,
+	ABI_CLASS_VIDEODRV,
+	ABI_VIDEODRV_VERSION,
+	MOD_CLASS_VIDEODRV,
+	{0,0,0,0}
+};
+
+XF86ModuleData suncg14ModuleData = { &suncg14VersRec, cg14Setup, NULL };
+
+pointer
+cg14Setup(pointer module, pointer opts, int *errmaj, int *errmin)
+{
+    static Bool setupDone = FALSE;
+
+    if (!setupDone) {
+	setupDone = TRUE;
+	xf86AddDriver(&SUNCG14, module, 0);
+
+	/*
+	 * Modules that this driver always requires can be loaded here
+	 * by calling LoadSubModule().
+	 */
+
+	/*
+	 * The return value must be non-NULL on success even though there
+	 * is no TearDownProc.
+	 */
+	return (pointer)TRUE;
+    } else {
+	if (errmaj) *errmaj = LDR_ONCEONLY;
+	return NULL;
+    }
+}
+
+#endif /* XFree86LOADER */
+
+static Bool
+CG14GetRec(ScrnInfoPtr pScrn)
+{
+    /*
+     * Allocate an Cg14Rec, and hook it into pScrn->driverPrivate.
+     * pScrn->driverPrivate is initialised to NULL, so we can check if
+     * the allocation has already been done.
+     */
+    if (pScrn->driverPrivate != NULL)
+	return TRUE;
+
+    pScrn->driverPrivate = xnfcalloc(sizeof(Cg14Rec), 1);
+    return TRUE;
+}
+
+static void
+CG14FreeRec(ScrnInfoPtr pScrn)
+{
+    Cg14Ptr pCg14;
+
+    if (pScrn->driverPrivate == NULL)
+	return;
+
+    pCg14 = GET_CG14_FROM_SCRN(pScrn);
+
+    xfree(pScrn->driverPrivate);
+    pScrn->driverPrivate = NULL;
+
+    return;
+}
+
+static const OptionInfoRec *
+CG14AvailableOptions(int chipid, int busid)
+{
+    return CG14Options;
+}
+
+/* Mandatory */
+static void
+CG14Identify(int flags)
+{
+    xf86Msg(X_INFO, "%s: driver for CG14\n", CG14_NAME);
+}
+
+
+/* Mandatory */
+static Bool
+CG14Probe(DriverPtr drv, int flags)
+{
+    int i;
+    GDevPtr *devSections;
+    int *usedChips;
+    int numDevSections;
+    int numUsed;
+    Bool foundScreen = FALSE;
+    EntityInfoPtr pEnt;
+
+    /*
+     * The aim here is to find all cards that this driver can handle,
+     * and for the ones not already claimed by another driver, claim the
+     * slot, and allocate a ScrnInfoRec.
+     *
+     * This should be a minimal probe, and it should under no circumstances
+     * change the state of the hardware.  Because a device is found, don't
+     * assume that it will be used.  Don't do any initialisations other than
+     * the required ScrnInfoRec initialisations.  Don't allocate any new
+     * data structures.
+     */
+
+    /*
+     * Next we check, if there has been a chipset override in the config file.
+     * For this we must find out if there is an active device section which
+     * is relevant, i.e., which has no driver specified or has THIS driver
+     * specified.
+     */
+
+    if ((numDevSections = xf86MatchDevice(CG14_DRIVER_NAME,
+					  &devSections)) <= 0) {
+	/*
+	 * There's no matching device section in the config file, so quit
+	 * now.
+	 */
+	return FALSE;
+    }
+
+    /*
+     * We need to probe the hardware first.  We then need to see how this
+     * fits in with what is given in the config file, and allow the config
+     * file info to override any contradictions.
+     */
+
+    numUsed = xf86MatchSbusInstances(CG14_NAME, SBUS_DEVICE_CG14,
+		   devSections, numDevSections,
+		   drv, &usedChips);
+				    
+    xfree(devSections);
+    if (numUsed <= 0)
+	return FALSE;
+
+    if (flags & PROBE_DETECT)
+	foundScreen = TRUE;
+    else for (i = 0; i < numUsed; i++) {
+	pEnt = xf86GetEntityInfo(usedChips[i]);
+
+	/*
+	 * Check that nothing else has claimed the slots.
+	 */
+	if(pEnt->active) {
+	    ScrnInfoPtr pScrn;
+	    
+	    /* Allocate a ScrnInfoRec and claim the slot */
+	    pScrn = xf86AllocateScreen(drv, 0);
+
+	    /* Fill in what we can of the ScrnInfoRec */
+	    pScrn->driverVersion = VERSION;
+	    pScrn->driverName	 = CG14_DRIVER_NAME;
+	    pScrn->name		 = CG14_NAME;
+	    pScrn->Probe	 = CG14Probe;
+	    pScrn->PreInit	 = CG14PreInit;
+	    pScrn->ScreenInit	 = CG14ScreenInit;
+  	    pScrn->SwitchMode	 = CG14SwitchMode;
+  	    pScrn->AdjustFrame	 = CG14AdjustFrame;
+	    pScrn->EnterVT	 = CG14EnterVT;
+	    pScrn->LeaveVT	 = CG14LeaveVT;
+	    pScrn->FreeScreen	 = CG14FreeScreen;
+	    pScrn->ValidMode	 = CG14ValidMode;
+	    xf86AddEntityToScreen(pScrn, pEnt->index);
+	    foundScreen = TRUE;
+	}
+	xfree(pEnt);
+    }
+    xfree(usedChips);
+    return foundScreen;
+}
+
+/* Mandatory */
+static Bool
+CG14PreInit(ScrnInfoPtr pScrn, int flags)
+{
+    Cg14Ptr pCg14;
+    sbusDevicePtr psdp = NULL;
+    int i;
+
+    if (flags & PROBE_DETECT) return FALSE;
+
+    /*
+     * Note: This function is only called once at server startup, and
+     * not at the start of each server generation.  This means that
+     * only things that are persistent across server generations can
+     * be initialised here.  xf86Screens[] is (pScrn is a pointer to one
+     * of these).  Privates allocated using xf86AllocateScrnInfoPrivateIndex()  
+     * are too, and should be used for data that must persist across
+     * server generations.
+     *
+     * Per-generation data should be allocated with
+     * AllocateScreenPrivateIndex() from the ScreenInit() function.
+     */
+
+    /* Allocate the Cg14Rec driverPrivate */
+    if (!CG14GetRec(pScrn)) {
+	return FALSE;
+    }
+    pCg14 = GET_CG14_FROM_SCRN(pScrn);
+    
+    /* Set pScrn->monitor */
+    pScrn->monitor = pScrn->confScreen->monitor;
+
+    /* This driver doesn't expect more than one entity per screen */
+    if (pScrn->numEntities > 1)
+	return FALSE;
+    /* This is the general case */
+    for (i = 0; i < pScrn->numEntities; i++) {
+	EntityInfoPtr pEnt = xf86GetEntityInfo(pScrn->entityList[i]);
+
+	/* CG14 is purely AFX, but we handle it like SBUS */
+	if (pEnt->location.type == BUS_SBUS) {
+	    psdp = xf86GetSbusInfoForEntity(pEnt->index);
+	    pCg14->psdp = psdp;
+	} else
+	    return FALSE;
+    }
+    if (psdp == NULL)
+	return FALSE;
+
+    /*********************
+    deal with depth
+    *********************/
+    
+    if (!xf86SetDepthBpp(pScrn, 32, 0, 32, Support32bppFb)) {
+	return FALSE;
+    } else {
+	/* Check that the returned depth is one we support */
+	switch (pScrn->depth) {
+	case 32:
+	    /* OK */
+	    break;
+	default:
+	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		       "Given depth (%d) is not supported by this driver\n",
+		       pScrn->depth);
+	    return FALSE;
+	}
+    }
+
+    /* Collect all of the relevant option flags (fill in pScrn->options) */
+    xf86CollectOptions(pScrn, NULL);
+    /* Process the options */
+    if (!(pCg14->Options = xalloc(sizeof(CG14Options))))
+	return FALSE;
+    memcpy(pCg14->Options, CG14Options, sizeof(CG14Options));
+    xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, pCg14->Options);
+
+    /*
+     * This must happen after pScrn->display has been set because
+     * xf86SetWeight references it.
+     */
+    if (pScrn->depth > 8) {
+	rgb weight = {10, 11, 11};
+	rgb mask = {0xff, 0xff00, 0xff0000};
+                                       
+	if (!xf86SetWeight(pScrn, weight, mask)) {
+	    return FALSE;
+	}
+    }
+                                                                           
+    if (!xf86SetDefaultVisual(pScrn, -1))
+	return FALSE;
+    else if (pScrn->depth > 8) {
+	/* We don't currently support DirectColor */
+	if (pScrn->defaultVisual != TrueColor) {
+	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
+		       " (%s) is not supported\n",
+		       xf86GetVisualName(pScrn->defaultVisual));
+	    return FALSE;
+	}
+    }                                                                                                  
+
+    /*
+     * The new cmap code requires this to be initialised.
+     */
+
+    {
+	Gamma zeros = {0.0, 0.0, 0.0};
+
+	if (!xf86SetGamma(pScrn, zeros)) {
+	    return FALSE;
+	}
+    }
+
+    if (xf86LoadSubModule(pScrn, "fb") == NULL) {
+	CG14FreeRec(pScrn);
+	return FALSE;
+    }
+
+    /*********************
+    set up clock and mode stuff
+    *********************/
+    
+    pScrn->progClock = TRUE;
+
+    if(pScrn->display->virtualX || pScrn->display->virtualY) {
+	xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
+		   "CG14 does not support a virtual desktop\n");
+	pScrn->display->virtualX = 0;
+	pScrn->display->virtualY = 0;
+    }
+
+    xf86SbusUseBuiltinMode(pScrn, pCg14->psdp);
+    pScrn->currentMode = pScrn->modes;
+    pScrn->displayWidth = pScrn->virtualX;
+
+    /* Set display resolution */
+    xf86SetDpi(pScrn, 0, 0);
+
+    return TRUE;
+}
+
+/* Mandatory */
+
+/* This gets called at the start of each server generation */
+
+static Bool
+CG14ScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
+{
+    ScrnInfoPtr pScrn;
+    Cg14Ptr pCg14;
+    VisualPtr visual;
+    int ret;
+
+    /* 
+     * First get the ScrnInfoRec
+     */
+    pScrn = xf86Screens[pScreen->myNum];
+
+    pCg14 = GET_CG14_FROM_SCRN(pScrn);
+
+    /* Map the CG14 memory */
+    pCg14->fb = xf86MapSbusMem (pCg14->psdp, CG14_BGR_VOFF, 4 *
+				(pCg14->psdp->width * pCg14->psdp->height));
+    pCg14->x32 = xf86MapSbusMem (pCg14->psdp, CG14_X32_VOFF,
+				 (pCg14->psdp->width * pCg14->psdp->height));
+    pCg14->xlut = xf86MapSbusMem (pCg14->psdp, CG14_XLUT_VOFF, 4096);
+
+    if (! pCg14->fb || !pCg14->x32 || !pCg14->xlut)
+	return FALSE;
+
+    /* Darken the screen for aesthetic reasons and set the viewport */
+    CG14SaveScreen(pScreen, SCREEN_SAVER_ON);
+
+    /*
+     * The next step is to setup the screen's visuals, and initialise the
+     * framebuffer code.  In cases where the framebuffer's default
+     * choices for things like visual layouts and bits per RGB are OK,
+     * this may be as simple as calling the framebuffer's ScreenInit()
+     * function.  If not, the visuals will need to be setup before calling
+     * a fb ScreenInit() function and fixed up after.
+     */
+
+    /*
+     * Reset visual list.
+     */
+    miClearVisualTypes();
+
+    /* Setup the visuals we support. */
+
+    if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
+			  pScrn->rgbBits, pScrn->defaultVisual))
+	return FALSE;
+
+    miSetPixmapDepths ();
+
+    /*
+     * Call the framebuffer layer's ScreenInit function, and fill in other
+     * pScreen fields.
+     */
+
+    CG14InitCplane24(pScrn);
+    ret = fbScreenInit(pScreen, pCg14->fb, pScrn->virtualX,
+		       pScrn->virtualY, pScrn->xDpi, pScrn->yDpi,
+		       pScrn->virtualX, pScrn->bitsPerPixel);
+
+    if (!ret)
+	return FALSE;
+
+    miInitializeBackingStore(pScreen);
+    xf86SetBackingStore(pScreen);
+    xf86SetSilkenMouse(pScreen);
+
+    xf86SetBlackWhitePixels(pScreen);
+
+    if (pScrn->bitsPerPixel > 8) {
+	/* Fixup RGB ordering */
+	visual = pScreen->visuals + pScreen->numVisuals;
+	while (--visual >= pScreen->visuals) {
+	    if ((visual->class | DynamicClass) == DirectColor) {
+		visual->offsetRed = pScrn->offset.red;
+		visual->offsetGreen = pScrn->offset.green;
+		visual->offsetBlue = pScrn->offset.blue;
+		visual->redMask = pScrn->mask.red;
+		visual->greenMask = pScrn->mask.green;
+		visual->blueMask = pScrn->mask.blue;
+	    }
+	}
+    }
+
+#ifdef RENDER
+    /* must be after RGB ordering fixed */
+    fbPictureInit (pScreen, 0, 0);
+#endif
+
+    /* Initialise cursor functions */
+    miDCInitialize (pScreen, xf86GetPointerScreenFuncs());
+
+    /* Initialise default colourmap */
+    if (!miCreateDefColormap(pScreen))
+	return FALSE;
+
+    pCg14->CloseScreen = pScreen->CloseScreen;
+    pScreen->CloseScreen = CG14CloseScreen;
+    pScreen->SaveScreen = CG14SaveScreen;
+
+    /* Report any unused options (only for the first generation) */
+    if (serverGeneration == 1) {
+	xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options);
+    }
+
+    /* unblank the screen */
+    CG14SaveScreen(pScreen, SCREEN_SAVER_OFF);
+
+    /* Done */
+    return TRUE;
+}
+
+
+/* Usually mandatory */
+static Bool
+CG14SwitchMode(int scrnIndex, DisplayModePtr mode, int flags)
+{
+    return TRUE;
+}
+
+
+/*
+ * This function is used to initialize the Start Address - the first
+ * displayed location in the video memory.
+ */
+/* Usually mandatory */
+static void 
+CG14AdjustFrame(int scrnIndex, int x, int y, int flags)
+{
+    /* we don't support virtual desktops */
+    return;
+}
+
+/*
+ * This is called when VT switching back to the X server.  Its job is
+ * to reinitialise the video mode.
+ */
+
+/* Mandatory */
+static Bool
+CG14EnterVT(int scrnIndex, int flags)
+{
+    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
+
+    CG14InitCplane24 (pScrn);
+    return TRUE;
+}
+
+
+/*
+ * This is called when VT switching away from the X server.
+ */
+
+/* Mandatory */
+static void
+CG14LeaveVT(int scrnIndex, int flags)
+{
+    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
+
+    CG14ExitCplane24 (pScrn);
+    return;
+}
+
+
+/*
+ * This is called at the end of each server generation.  It restores the
+ * original (text) mode.  It should really also unmap the video memory too.
+ */
+
+/* Mandatory */
+static Bool
+CG14CloseScreen(int scrnIndex, ScreenPtr pScreen)
+{
+    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
+    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
+
+    pScrn->vtSema = FALSE;
+    xf86UnmapSbusMem(pCg14->psdp, pCg14->fb,
+		     (pCg14->psdp->width * pCg14->psdp->height * 4));
+    xf86UnmapSbusMem(pCg14->psdp, pCg14->x32,
+		     (pCg14->psdp->width * pCg14->psdp->height));
+    xf86UnmapSbusMem(pCg14->psdp, pCg14->xlut, 4096);
+    
+    pScreen->CloseScreen = pCg14->CloseScreen;
+    return (*pScreen->CloseScreen)(scrnIndex, pScreen);
+    return FALSE;
+}
+
+
+/* Free up any per-generation data structures */
+
+/* Optional */
+static void
+CG14FreeScreen(int scrnIndex, int flags)
+{
+    CG14FreeRec(xf86Screens[scrnIndex]);
+}
+
+
+/* Checks if a mode is suitable for the selected chipset. */
+
+/* Optional */
+static int
+CG14ValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags)
+{
+    if (mode->Flags & V_INTERLACE)
+	return(MODE_BAD);
+
+    return(MODE_OK);
+}
+
+/* Do screen blanking */
+
+/* Mandatory */
+static Bool
+CG14SaveScreen(ScreenPtr pScreen, int mode)
+    /* this function should blank the screen when unblank is FALSE and
+       unblank it when unblank is TRUE -- it doesn't actually seem to be
+       used for much though */
+{
+    return TRUE;
+}
+
+/*
+ * This is the implementation of the Sync() function.
+ */
+void
+CG14Sync(ScrnInfoPtr pScrn)
+{
+    return;
+}
+
+/*
+ * This initializes the card for 24 bit mode.
+ */
+static void
+CG14InitCplane24(ScrnInfoPtr pScrn)
+{
+  Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
+  int size, bpp;
+              
+  size = pScrn->virtualX * pScrn->virtualY;
+  bpp = 32;
+  ioctl (pCg14->psdp->fd, CG14_SET_PIXELMODE, &bpp);
+  memset (pCg14->fb, 0, size * 4);
+  memset (pCg14->x32, 0, size);
+  memset (pCg14->xlut, 0, 0x200);
+}                                                  
+
+/*
+ * This initializes the card for 8 bit mode.
+ */
+static void
+CG14ExitCplane24(ScrnInfoPtr pScrn)
+{
+  Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
+  int bpp = 8;
+              
+  ioctl (pCg14->psdp->fd, CG14_SET_PIXELMODE, &bpp);
+}