Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 709 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/xfree86/common/xf86sbusBus.c b/nx-X11/programs/Xserver/hw/xfree86/common/xf86sbusBus.c
new file mode 100644
index 000000000..3d6576f52
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/xfree86/common/xf86sbusBus.c
@@ -0,0 +1,709 @@
+/*
+ * SBUS bus-specific code.
+ *
+ * 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/common/xf86sbusBus.c,v 3.6 2001/03/03 22:16:35 tsi Exp $ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <X11/X.h>
+#include "os.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+#include "xf86Resources.h"
+#include "xf86cmap.h"
+
+#include "xf86Bus.h"
+
+#include "xf86sbusBus.h"
+#include "xf86Sbus.h"
+
+Bool sbusSlotClaimed = FALSE;
+
+static int xf86nSbusInfo;
+
+static void
+CheckSbusDevice(const char *device, int fbNum)
+{
+    int fd, i;
+    struct fbgattr fbattr;
+    sbusDevicePtr psdp;
+
+    fd = open(device, O_RDONLY, 0);
+    if (fd < 0)
+	return;
+    memset(&fbattr, 0, sizeof(fbattr));
+    if (ioctl(fd, FBIOGATTR, &fbattr) < 0) {
+	if (ioctl(fd, FBIOGTYPE, &fbattr.fbtype) < 0) {
+	    close(fd);
+	    return;
+	}
+    }
+    close(fd);
+    for (i = 0; sbusDeviceTable[i].devId; i++)
+	if (sbusDeviceTable[i].fbType == fbattr.fbtype.fb_type)
+	    break;
+    if (! sbusDeviceTable[i].devId)
+	return;
+    xf86SbusInfo = xnfrealloc(xf86SbusInfo, sizeof(psdp) * (++xf86nSbusInfo + 1));
+    xf86SbusInfo[xf86nSbusInfo] = NULL;
+    xf86SbusInfo[xf86nSbusInfo - 1] = psdp = xnfcalloc(sizeof (sbusDevice), 1);
+    psdp->devId = sbusDeviceTable[i].devId;
+    psdp->fbNum = fbNum;
+    psdp->device = xnfstrdup(device);
+    psdp->width = fbattr.fbtype.fb_width;
+    psdp->height = fbattr.fbtype.fb_height;
+    psdp->fd = -1;
+}
+
+void
+xf86SbusProbe(void)
+{
+    int i, useProm = 0;
+    char fbDevName[32];
+    sbusDevicePtr psdp, *psdpp;
+
+    xf86SbusInfo = xalloc(sizeof(psdp));
+    *xf86SbusInfo = NULL;
+    for (i = 0; i < 32; i++) {
+	sprintf(fbDevName, "/dev/fb%d", i);
+	CheckSbusDevice(fbDevName, i);
+    }
+    if (sparcPromInit() >= 0) {
+	useProm = 1;
+	sparcPromAssignNodes();
+    }
+    for (psdpp = xf86SbusInfo; (psdp = *psdpp); psdpp++) {
+	for (i = 0; sbusDeviceTable[i].devId; i++)
+	    if (sbusDeviceTable[i].devId == psdp->devId)
+		psdp->descr = sbusDeviceTable[i].descr;
+	/*
+	 * If we can use PROM information and found the PROM node for this
+	 * device, we can tell more about the card.
+	 */
+	if (useProm && psdp->node.node) {
+	    char *prop, *promPath;
+	    int len, chiprev, vmsize;
+
+	    switch (psdp->devId) {
+	    case SBUS_DEVICE_MGX:
+		prop = sparcPromGetProperty(&psdp->node, "fb_size", &len);
+		if (prop && len == 4 && *(int *)prop == 0x400000)
+		    psdp->descr = "Quantum 3D MGXplus with 4M VRAM";
+		break;
+	    case SBUS_DEVICE_CG6:
+		chiprev = 0;
+		vmsize = 0;
+		prop = sparcPromGetProperty(&psdp->node, "chiprev", &len);
+		if (prop && len == 4)
+		    chiprev = *(int *)prop;
+		prop = sparcPromGetProperty(&psdp->node, "vmsize", &len);
+		if (prop && len == 4)
+		    vmsize = *(int *)prop;
+		switch (chiprev) {
+		case 1:
+		case 2:
+		case 3:
+		case 4:
+		    psdp->descr = "Sun Double width GX"; break;
+		case 5:
+		case 6:
+		case 7:
+		case 8:
+		case 9:
+		    psdp->descr = "Sun Single width GX"; break;
+		case 11:
+		    switch (vmsize) {
+		    case 2:
+			psdp->descr = "Sun Turbo GX with 1M VSIMM"; break;
+		    case 4:
+			psdp->descr = "Sun Turbo GX Plus"; break;
+		    default:
+			psdp->descr = "Sun Turbo GX"; break;
+		    }
+		}
+		break;
+	    case SBUS_DEVICE_CG14:
+		prop = sparcPromGetProperty(&psdp->node, "reg", &len);
+		vmsize = 0;
+		if (prop && !(len % 12) && len > 0)
+		    vmsize = *(int *)(prop + len - 4);
+		switch (vmsize) {
+		case 0x400000:
+		    psdp->descr = "Sun SX with 4M VSIMM"; break;
+		case 0x800000:
+		    psdp->descr = "Sun SX with 8M VSIMM"; break;
+		}
+		break;
+	    case SBUS_DEVICE_LEO:
+		prop = sparcPromGetProperty(&psdp->node, "model", &len);
+		if (prop && len > 0 && !strstr(prop, "501-2503"))
+		    psdp->descr = "Sun Turbo ZX";
+		break;
+	    case SBUS_DEVICE_TCX:
+		if (sparcPromGetBool(&psdp->node, "tcx-8-bit"))
+		    psdp->descr = "Sun TCX (8bit)";
+		else
+		    psdp->descr = "Sun TCX (S24)";
+		break;
+	    case SBUS_DEVICE_FFB:
+		prop = sparcPromGetProperty(&psdp->node, "name", &len);
+		chiprev = 0;
+		prop = sparcPromGetProperty(&psdp->node, "board_type", &len);
+		if (prop && len == 4)
+		    chiprev = *(int *)prop;
+		if (strstr (prop, "afb")) {
+		    if (chiprev == 3)
+			psdp->descr = "Sun|Elite3D-M6 Horizontal";
+		} else {
+		    switch (chiprev) {
+		    case 0x08:
+			psdp->descr = "Sun FFB 67MHz Creator"; break;
+		    case 0x0b:
+			psdp->descr = "Sun FFB 67MHz Creator 3D"; break;
+		    case 0x1b:
+			psdp->descr = "Sun FFB 75MHz Creator 3D"; break;
+		    case 0x20:
+		    case 0x28:
+			psdp->descr = "Sun FFB2 Vertical Creator"; break;
+		    case 0x23:
+		    case 0x2b:
+			psdp->descr = "Sun FFB2 Vertical Creator 3D"; break;
+		    case 0x30:
+			psdp->descr = "Sun FFB2+ Vertical Creator"; break;
+		    case 0x33:
+			psdp->descr = "Sun FFB2+ Vertical Creator 3D"; break;
+		    case 0x40:
+		    case 0x48:
+			psdp->descr = "Sun FFB2 Horizontal Creator"; break;
+		    case 0x43:
+		    case 0x4b:
+			psdp->descr = "Sun FFB2 Horizontal Creator 3D"; break;
+		    }
+		}
+		break;
+	    }
+
+	    xf86Msg(X_PROBED, "SBUS:(0x%08x) %s", psdp->node.node, psdp->descr);
+	    promPath = sparcPromNode2Pathname (&psdp->node);
+	    if (promPath) {
+		xf86ErrorF(" at %s", promPath);
+		xfree(promPath);
+	    }
+	} else
+	    xf86Msg(X_PROBED, "SBUS: %s", psdp->descr);
+	xf86ErrorF("\n");
+    }
+    if (useProm)
+	sparcPromClose();
+}
+
+/*
+ * Parse a BUS ID string, and return the SBUS bus parameters if it was
+ * in the correct format for a SBUS bus id.
+ */
+
+Bool
+xf86ParseSbusBusString(const char *busID, int *fbNum)
+{
+    /*
+     * The format is assumed to be one of:
+     * "fbN", e.g. "fb1", which means the device corresponding to /dev/fbN
+     * "nameN", e.g. "cgsix0", which means Nth instance of card NAME
+     * "/prompath", e.g. "/sbus@0,10001000/cgsix@3,0" which is PROM pathname
+     * to the device.
+     */
+
+    const char *id;
+    int i, len;
+
+    if (StringToBusType(busID, &id) != BUS_SBUS)
+	return FALSE;
+
+    if (*id != '/') {
+	if (!strncmp (id, "fb", 2)) {
+	    if (!isdigit(id[2]))
+		return FALSE;
+	    *fbNum = atoi(id + 2);
+	    return TRUE;
+	} else {
+	    sbusDevicePtr *psdpp;
+	    int devId;
+
+	    for (i = 0, len = 0; sbusDeviceTable[i].devId; i++) {
+		len = strlen(sbusDeviceTable[i].promName);
+		if (!strncmp (sbusDeviceTable[i].promName, id, len)
+		    && isdigit(id[len]))
+		    break;
+	    }
+	    devId = sbusDeviceTable[i].devId;
+	    if (!devId) return FALSE;
+	    i = atoi(id + len);
+	    for (psdpp = xf86SbusInfo; *psdpp; ++psdpp) {
+		if ((*psdpp)->devId != devId)
+		    continue;
+		if (!i) {
+		    *fbNum = (*psdpp)->fbNum;
+		    return TRUE;
+		}
+		i--;
+	    }
+	}
+	return FALSE;
+    }
+
+    if (sparcPromInit() >= 0) {
+	i = sparcPromPathname2Node(id);
+	sparcPromClose();
+	if (i) {
+	    sbusDevicePtr *psdpp;
+	    for (psdpp = xf86SbusInfo; *psdpp; ++psdpp) {
+		if ((*psdpp)->node.node == i) {
+		    *fbNum = (*psdpp)->fbNum;
+		    return TRUE;
+		}
+	    }
+	}
+    }
+    return FALSE;
+}
+
+/*
+ * Compare a BUS ID string with a SBUS bus id.  Return TRUE if they match.
+ */
+
+Bool
+xf86CompareSbusBusString(const char *busID, int fbNum)
+{
+    int iFbNum;
+
+    if (xf86ParseSbusBusString(busID, &iFbNum)) {
+	return fbNum == iFbNum;
+    } else {
+	return FALSE;
+    }
+}
+
+/*
+ * Check if the slot requested is free.  If it is already in use, return FALSE.
+ */
+
+Bool
+xf86CheckSbusSlot(int fbNum)
+{
+    int i;
+    EntityPtr p;
+
+    for (i = 0; i < xf86NumEntities; i++) {
+	p = xf86Entities[i];
+	/* Check if this SBUS slot is taken */
+	if (p->busType == BUS_SBUS && p->sbusBusId.fbNum == fbNum)
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+/*
+ * If the slot requested is already in use, return -1.
+ * Otherwise, claim the slot for the screen requesting it.
+ */
+
+int
+xf86ClaimSbusSlot(sbusDevicePtr psdp, DriverPtr drvp,
+		  GDevPtr dev, Bool active)
+{
+    EntityPtr p = NULL;
+
+    int num;
+
+    if (xf86CheckSbusSlot(psdp->fbNum)) {
+        num = xf86AllocateEntity();
+        p = xf86Entities[num];
+        p->driver = drvp;
+        p->chipset = -1;
+        p->busType = BUS_SBUS;
+        xf86AddDevToEntity(num, dev);
+        p->sbusBusId.fbNum = psdp->fbNum;
+        p->active = active;
+        p->inUse = FALSE;
+        /* Here we initialize the access structure */
+        p->access = xnfcalloc(1,sizeof(EntityAccessRec));
+	p->access->fallback = &AccessNULL;
+        p->access->pAccess = &AccessNULL;
+	sbusSlotClaimed = TRUE;
+	return num;
+    } else
+	return -1;
+}
+
+int
+xf86MatchSbusInstances(const char *driverName, int sbusDevId, 
+		       GDevPtr *devList, int numDevs, DriverPtr drvp,
+		       int **foundEntities)
+{
+    int i,j;
+    sbusDevicePtr psdp, *psdpp;
+    int numClaimedInstances = 0;
+    int allocatedInstances = 0;
+    int numFound = 0;
+    GDevPtr devBus = NULL;
+    GDevPtr dev = NULL;
+    int *retEntities = NULL;
+    int useProm = 0;
+
+    struct Inst {
+	sbusDevicePtr	sbus;
+	GDevPtr		dev;
+	Bool		claimed;  /* BusID matches with a device section */
+    } *instances = NULL;
+
+    *foundEntities = NULL;
+    for (psdpp = xf86SbusInfo, psdp = *psdpp; psdp; psdp = *++psdpp) {
+	if (psdp->devId != sbusDevId)
+	    continue;
+	if (psdp->fd == -2)
+	    continue;
+	++allocatedInstances;
+	instances = xnfrealloc(instances,
+			       allocatedInstances * sizeof(struct Inst));
+	instances[allocatedInstances - 1].sbus = psdp;
+	instances[allocatedInstances - 1].dev = NULL;
+	instances[allocatedInstances - 1].claimed = FALSE;
+	numFound++;
+    }
+
+    /*
+     * This may be debatable, but if no SBUS devices with a matching vendor
+     * type is found, return zero now.  It is probably not desirable to
+     * allow the config file to override this.
+     */
+    if (allocatedInstances <= 0) {
+	xfree(instances);
+	return 0;
+    }
+
+    if (xf86DoProbe) {
+	xfree(instances);
+	return numFound;
+    }
+
+    if (sparcPromInit() >= 0)
+	useProm = 1;
+
+    if (xf86DoConfigure && xf86DoConfigurePass1) {
+	GDevPtr pGDev;
+	int actualcards = 0;
+	for (i = 0; i < allocatedInstances; i++) {
+	    actualcards++;
+	    pGDev = xf86AddBusDeviceToConfigure(drvp->driverName, BUS_SBUS,
+						instances[i].sbus, -1);
+	    if (pGDev) {
+		/*
+		 * XF86Match???Instances() treat chipID and chipRev as
+		 * overrides, so clobber them here.
+		 */
+		pGDev->chipID = pGDev->chipRev = -1;
+	    }
+	}
+	xfree(instances);
+	if (useProm)
+	    sparcPromClose();
+	return actualcards;
+    }
+
+#ifdef DEBUG
+    ErrorF("%s instances found: %d\n", driverName, allocatedInstances);
+#endif
+
+    for (i = 0; i < allocatedInstances; i++) {
+	char *promPath = NULL;
+
+	psdp = instances[i].sbus;
+	devBus = NULL;
+	dev = NULL;
+	if (useProm && psdp->node.node)
+	    promPath = sparcPromNode2Pathname(&psdp->node);
+
+	for (j = 0; j < numDevs; j++) {
+	    if (devList[j]->busID && *devList[j]->busID) {
+		if (xf86CompareSbusBusString(devList[j]->busID, psdp->fbNum)) {
+		    if (devBus)
+			xf86MsgVerb(X_WARNING,0,
+			    "%s: More than one matching Device section for "
+			    "instance (BusID: %s) found: %s\n",
+			    driverName,devList[j]->identifier,
+			    devList[j]->busID);
+		    else
+			devBus = devList[j];
+		} 
+	    } else {
+		if (!dev && !devBus) {
+		    if (promPath)
+			xf86Msg(X_PROBED, "Assigning device section with no busID to SBUS:%s\n",
+				promPath);
+		    else
+			xf86Msg(X_PROBED, "Assigning device section with no busID to SBUS:fb%d\n",
+				psdp->fbNum);
+		    dev = devList[j];
+		} else
+		    xf86MsgVerb(X_WARNING, 0,
+			    "%s: More than one matching Device section "
+			    "found: %s\n", driverName, devList[j]->identifier);
+	    }
+	}
+	if (devBus) dev = devBus;  /* busID preferred */ 
+	if (!dev && psdp->fd != -2) {
+	    if (promPath) {
+		xf86MsgVerb(X_WARNING, 0, "%s: No matching Device section "
+			    "for instance (BusID SBUS:%s) found\n",
+			    driverName, promPath);
+	    } else
+		xf86MsgVerb(X_WARNING, 0, "%s: No matching Device section "
+			    "for instance (BusID SBUS:fb%d) found\n",
+			    driverName, psdp->fbNum);
+	} else if (dev) {
+	    numClaimedInstances++;
+	    instances[i].claimed = TRUE;
+	    instances[i].dev = dev;
+	}
+	if (promPath)
+	    xfree(promPath);
+    }
+
+#ifdef DEBUG
+    ErrorF("%s instances found: %d\n", driverName, numClaimedInstances);
+#endif
+
+    /*
+     * Of the claimed instances, check that another driver hasn't already
+     * claimed its slot.
+     */
+    numFound = 0;
+    for (i = 0; i < allocatedInstances && numClaimedInstances > 0; i++) {
+	if (!instances[i].claimed)
+	    continue;
+	psdp = instances[i].sbus;
+	if (!xf86CheckSbusSlot(psdp->fbNum))
+	    continue;
+
+#ifdef DEBUG
+	ErrorF("%s: card at fb%d %08x is claimed by a Device section\n",
+	       driverName, psdp->fbNum, psdp->node.node);
+#endif
+	
+	/* Allocate an entry in the lists to be returned */
+	numFound++;
+	retEntities = xnfrealloc(retEntities, numFound * sizeof(int));
+	retEntities[numFound - 1]
+	    = xf86ClaimSbusSlot(psdp, drvp, instances[i].dev,instances[i].dev->active ?
+				TRUE : FALSE);
+    }
+    xfree(instances);
+    if (numFound > 0) {
+	*foundEntities = retEntities;
+    }
+
+    if (useProm)
+	sparcPromClose();
+
+    return numFound;
+}
+
+/*
+ * xf86GetSbusInfoForEntity() -- Get the sbusDevicePtr of entity.
+ */
+sbusDevicePtr
+xf86GetSbusInfoForEntity(int entityIndex)
+{
+    sbusDevicePtr *psdpp;
+    EntityPtr p = xf86Entities[entityIndex];
+
+    if (entityIndex >= xf86NumEntities
+	|| p->busType != BUS_SBUS) return NULL;
+
+    for (psdpp = xf86SbusInfo; *psdpp != NULL; psdpp++) {
+	if (p->sbusBusId.fbNum == (*psdpp)->fbNum)
+	    return (*psdpp);
+    }
+    return NULL;
+}
+
+int
+xf86GetEntityForSbusInfo(sbusDevicePtr psdp)
+{
+    int i;
+
+    for (i = 0; i < xf86NumEntities; i++) {
+	EntityPtr p = xf86Entities[i];
+	if (p->busType != BUS_SBUS) continue;
+
+	if (p->sbusBusId.fbNum == psdp->fbNum)
+	    return i;
+    }
+    return -1;
+}
+
+void
+xf86SbusUseBuiltinMode(ScrnInfoPtr pScrn, sbusDevicePtr psdp)
+{
+    DisplayModePtr mode;
+
+    mode = xnfcalloc(sizeof(DisplayModeRec), 1);
+    mode->name = "current";
+    mode->next = mode;
+    mode->prev = mode;
+    mode->type = M_T_BUILTIN;
+    mode->Clock = 100000000;
+    mode->HDisplay = psdp->width;
+    mode->HSyncStart = psdp->width;
+    mode->HSyncEnd = psdp->width;
+    mode->HTotal = psdp->width;
+    mode->VDisplay = psdp->height;
+    mode->VSyncStart = psdp->height;
+    mode->VSyncEnd = psdp->height;
+    mode->VTotal = psdp->height;
+    mode->SynthClock = mode->Clock;
+    mode->CrtcHDisplay = mode->HDisplay;
+    mode->CrtcHSyncStart = mode->HSyncStart;
+    mode->CrtcHSyncEnd = mode->HSyncEnd;
+    mode->CrtcHTotal = mode->HTotal;
+    mode->CrtcVDisplay = mode->VDisplay;
+    mode->CrtcVSyncStart = mode->VSyncStart;
+    mode->CrtcVSyncEnd = mode->VSyncEnd;
+    mode->CrtcVTotal = mode->VTotal;
+    mode->CrtcHAdjusted = FALSE;
+    mode->CrtcVAdjusted = FALSE;
+    pScrn->modes = mode;
+    pScrn->virtualX = psdp->width;
+    pScrn->virtualY = psdp->height;
+}
+
+static int sbusPaletteIndex = -1;
+static unsigned long sbusPaletteGeneration = 0;
+typedef struct _sbusCmap {
+    sbusDevicePtr psdp;
+    CloseScreenProcPtr CloseScreen;
+    Bool origCmapValid;
+    unsigned char origRed[16];
+    unsigned char origGreen[16];
+    unsigned char origBlue[16];
+} sbusCmapRec, *sbusCmapPtr;
+
+#define SBUSCMAPPTR(pScreen) ((sbusCmapPtr)((pScreen)->devPrivates[sbusPaletteIndex].ptr))
+
+static void
+xf86SbusCmapLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
+			LOCO *colors, VisualPtr pVisual)
+{
+    int i, index;
+    sbusCmapPtr cmap;
+    struct fbcmap fbcmap;
+    unsigned char *data = ALLOCATE_LOCAL(numColors*3);
+                             
+    cmap = SBUSCMAPPTR(pScrn->pScreen);
+    if (!cmap) return;
+    fbcmap.count = 0;
+    fbcmap.index = indices[0];
+    fbcmap.red = data;
+    fbcmap.green = data + numColors;
+    fbcmap.blue = fbcmap.green + numColors;
+    for (i = 0; i < numColors; i++) {
+	index = indices[i];
+	if (fbcmap.count && index != fbcmap.index + fbcmap.count) {
+	    ioctl (cmap->psdp->fd, FBIOPUTCMAP, &fbcmap);
+	    fbcmap.count = 0;
+	    fbcmap.index = index;
+	}
+	fbcmap.red[fbcmap.count] = colors[index].red;
+	fbcmap.green[fbcmap.count] = colors[index].green;
+	fbcmap.blue[fbcmap.count++] = colors[index].blue;
+    }
+    ioctl (cmap->psdp->fd, FBIOPUTCMAP, &fbcmap);
+    DEALLOCATE_LOCAL(data);
+}
+
+static Bool
+xf86SbusCmapCloseScreen(int i, ScreenPtr pScreen)
+{
+    sbusCmapPtr cmap;
+    struct fbcmap fbcmap;
+                         
+    cmap = SBUSCMAPPTR(pScreen);
+    if (cmap->origCmapValid) {
+	fbcmap.index = 0;
+	fbcmap.count = 16;
+	fbcmap.red = cmap->origRed;
+	fbcmap.green = cmap->origGreen;
+	fbcmap.blue = cmap->origBlue;
+	ioctl (cmap->psdp->fd, FBIOPUTCMAP, &fbcmap);
+    }
+    pScreen->CloseScreen = cmap->CloseScreen;
+    xfree (cmap);
+    return (*pScreen->CloseScreen) (i, pScreen);
+}    
+
+Bool
+xf86SbusHandleColormaps(ScreenPtr pScreen, sbusDevicePtr psdp)
+{
+    sbusCmapPtr cmap;
+    struct fbcmap fbcmap;
+    unsigned char data[2];
+
+    if(sbusPaletteGeneration != serverGeneration) {
+	if((sbusPaletteIndex = AllocateScreenPrivateIndex()) < 0)
+	    return FALSE;
+	sbusPaletteGeneration = serverGeneration;
+    }
+    cmap = xnfcalloc(1, sizeof(sbusCmapRec));
+    pScreen->devPrivates[sbusPaletteIndex].ptr = cmap;
+    cmap->psdp = psdp;
+    fbcmap.index = 0;
+    fbcmap.count = 16;
+    fbcmap.red = cmap->origRed;
+    fbcmap.green = cmap->origGreen;
+    fbcmap.blue = cmap->origBlue;
+    if (ioctl (psdp->fd, FBIOGETCMAP, &fbcmap) >= 0)
+	cmap->origCmapValid = TRUE;
+    fbcmap.index = 0;
+    fbcmap.count = 2;
+    fbcmap.red = data;
+    fbcmap.green = data;
+    fbcmap.blue = data;
+    if (pScreen->whitePixel == 0) {
+	data[0] = 255;
+	data[1] = 0;
+    } else {
+	data[0] = 0;
+	data[1] = 255;
+    }
+    ioctl (psdp->fd, FBIOPUTCMAP, &fbcmap);
+    cmap->CloseScreen = pScreen->CloseScreen;
+    pScreen->CloseScreen = xf86SbusCmapCloseScreen;
+    return xf86HandleColormaps(pScreen, 256, 8,
+			       xf86SbusCmapLoadPalette, NULL, 0);
+}