For x/.../bsd/alpha_video.c changes are:

--- alpha_video.orig.c	2006-01-09 10:00:19.000000000 -0500
+++ alpha_video.c	2007-09-29 11:19:24.000000000 -0400
@@ -706,22 +706,28 @@
     return;
 }
 
-void (*xf86WriteMmio8)(int Value, pointer Base, unsigned long Offset) 
+void (*xf86WriteMmio8)(int Value, volatile void * Base, unsigned  
+long Offset)
      = writeDense8;
-void (*xf86WriteMmio16)(int Value, pointer Base, unsigned long Offset)
+void (*xf86WriteMmio16)(int Value, volatile void * Base, unsigned  
+long Offset)
      = writeDense16;
-void (*xf86WriteMmio32)(int Value, pointer Base, unsigned long Offset)
+void (*xf86WriteMmio32)(int Value, volatile void * Base, unsigned  
+long Offset)
      = writeDense32;
-void (*xf86WriteMmioNB8)(int Value, pointer Base, unsigned long Offset) 
+void (*xf86WriteMmioNB8)(int Value, volatile void * Base, unsigned  
+long Offset) 
      = writeDenseNB8;
-void (*xf86WriteMmioNB16)(int Value, pointer Base, unsigned long Offset)
+void (*xf86WriteMmioNB16)(int Value, volatile void * Base, unsigned  
+long Offset)
      = writeDenseNB16;
-void (*xf86WriteMmioNB32)(int Value, pointer Base, unsigned long Offset)
+void (*xf86WriteMmioNB32)(int Value, volatile void * Base, unsigned  
+long Offset)
      = writeDenseNB32;
-int  (*xf86ReadMmio8)(pointer Base, unsigned long Offset) 
+int  (*xf86ReadMmio8)(volatile void * Base, unsigned long Offset)
      = readDense8;
-int  (*xf86ReadMmio16)(pointer Base, unsigned long Offset)
+int  (*xf86ReadMmio16)(volatile void * Base, unsigned long Offset)
      = readDense16;
-int  (*xf86ReadMmio32)(pointer Base, unsigned long Offset)
+int  (*xf86ReadMmio32)(volatile void * Base, unsigned long Offset)
      = readDense32;
 For xc/..../bus/netbasdPci.c changes are:
--- netbsdPci.orig.c	2007-07-10 13:15:54.000000000 -0400
+++ netbsdPci.c	2004-02-13 18:58:47.000000000 -0500
@@ -1,4 +1,4 @@
-/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/netbsdPci.c,v 1.9 2007/07/10 17:15:54 tsi Exp $ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/netbsdPci.c,v 1.5 2004/02/13 23:58:47 dawes Exp $ */
 /*
  * Copyright (C) 1994-2003 The XFree86 Project, Inc.
  * All rights reserved.
@@ -89,38 +89,17 @@
 {
 	struct pciio_businfo pci_businfo;
 
-	/* Always prefer a hardware-derived mechanism over an OS-provided one */
-	if (pciNumBuses)
-		return;
-
 	devpci = open("/dev/pci0", O_RDWR);
-	if (devpci < 0) {
-		if (errno != EPERM)
-			return;
-
-		/* Try again without write access */
-		devpci = open("/dev/pci0", O_RDONLY);
-		if (devpci < 0)
-			return;
-
-		xf86MsgVerb(X_WARNING, 3,
-			"OS limits PCI configuration space access to"
-			" read-only\n");
-	}
-
-	/* Use businfo to get the number of devs */
-	if (ioctl(devpci, PCI_IOC_BUSINFO, &pci_businfo) != 0) {
-	    ErrorF("netbsdPciInit: /dev/pci0 not a PCI bus device (%s)",
-		strerror(errno));
-	    close(devpci);
-	    devpci = -1;
-	    return;
-	}
+	if (devpci == -1)
+		FatalError("netbsdPciInit: can't open /dev/pci0\n");
 
 	pciNumBuses    = 1;
 	pciBusInfo[0]  = &netbsdPci0;
 	pciFindFirstFP = pciGenFindFirst;
 	pciFindNextFP  = pciGenFindNext;
+	/* use businfo to get the number of devs */
+	if (ioctl(devpci, PCI_IOC_BUSINFO, &pci_businfo) != 0)
+	    FatalError("netbsdPciInit: not a PCI bus device");
 	netbsdPci0.numDevices = pci_businfo.maxdevs;
 }
 
@@ -134,13 +113,9 @@
 	bdfr.function = PCI_FUNC_FROM_TAG(tag);
 	bdfr.cfgreg.reg = reg;
 
-	if (ioctl(devpci, PCI_IOC_BDF_CFGREAD, &bdfr) == -1) {
-		xf86MsgVerb(X_WARNING, 4,
-		    "netbsdPciConfRead: failed on %d:%d:%d %02x (%s)\n",
-		    bdfr.bus, bdfr.device, bdfr.function, reg,
-		    strerror(errno));
-		return ~0;
-	}
+	if (ioctl(devpci, PCI_IOC_BDF_CFGREAD, &bdfr) == -1)
+		FatalError("netbsdPciConfRead: failed on %d/%d/%d\n",
+		    bdfr.bus, bdfr.device, bdfr.function);
 
 	return (bdfr.cfgreg.val);
 }
@@ -157,10 +132,8 @@
 	bdfr.cfgreg.val = val;
 
 	if (ioctl(devpci, PCI_IOC_BDF_CFGWRITE, &bdfr) == -1)
-		xf86MsgVerb(X_WARNING, 4,
-		    "netbsdPciConfWrite: failed on %d:%d:%d %02x %08lx (%s)\n",
-		    bdfr.bus, bdfr.device, bdfr.function, reg,
-		    (unsigned long)val, strerror(errno));
+		FatalError("netbsdPciConfWrite: failed on %d/%d/%d\n",
+		    bdfr.bus, bdfr.device, bdfr.function);
 }
 
 static void

for /usr/include/sys/types.h:

--- /usr/include/sys/types.h.orig        2006-05-14  
04:08:59.000000000 -0700
+++ /usr/include/sys/types.h     2006-05-14 04:12:32.000000000 -0700
@@ -153,7 +153,10 @@
typedef        int64_t         daddr_t;        /* disk address */
#endif
+#ifndef dev_t
typedef        uint32_t        dev_t;          /* device number */
+#endif
+
typedef        uint32_t        fixpt_t;        /* fixed point number */
#ifndef        gid_t
@@ -163,7 +166,10 @@
typedef        uint32_t        id_t;           /* group id, process  
id or user id */
typedef        uint64_t        ino_t;          /* inode number */
+
+#ifndef key_t
typedef        long            key_t;          /* IPC key (for Sys V  
IPC) */
+#endif
#ifndef        mode_t
typedef        __mode_t        mode_t;         /* permissions */

Add host.def as previously stated.
-Mel