diff --git a/configure.ac b/configure.ac
index b193b73..c13675f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,11 +44,9 @@ AH_TOP([#include "xorg-server.h"])
 AC_ARG_WITH(xorg-module-dir, [  --with-xorg-module-dir=DIR ],
                              [ moduledir="$withval" ],
                              [ moduledir="$libdir/xorg/modules" ])
-AC_ARG_ENABLE(pciaccess,     AS_HELP_STRING([--enable-pciaccess],
-                             [Enable use of libpciaccess (default: disabled)]),
-			     [PCIACCESS=$enableval], [PCIACCESS=no])
 AC_SUBST(moduledir)
 
+
 # Checks for extensions
 m4_pattern_forbid([XORG_DRIVER_CHECK_EXT])dnl
 XORG_DRIVER_CHECK_EXT(DPMSExtension, xextproto)
@@ -56,17 +54,25 @@ XORG_DRIVER_CHECK_EXT(DPMSExtension, xextproto)
 # Checks for pkg-config packages
 PKG_CHECK_MODULES(XORG, xorg-server >= 1.2.99.901 xproto $REQUIRED_MODULES)
 sdkdir=$(pkg-config --variable=sdkdir xorg-server)
-PKG_CHECK_MODULES([PCIACCESS], [pciaccess >= 0.7.0])
+
+PKG_CHECK_MODULES([PCIACCESS], [pciaccess >= 0.8.0])
+save_CFLAGS=$CFLAGS
+CFLAGS=$XORG_CFLAGS
+AC_CHECK_DECL(XSERVER_LIBPCIACCESS,
+             [XSERVER_LIBPCIACCESS=yes],[XSERVER_LIBPCIACCESS=no],
+             [#include "xorg-server.h"])
+CFLAGS=$save_CFLAGS
+if test x$XSERVER_LIBPCIACCESS = xyes ; then
+    AC_DEFINE(PCIACCESS, 1, [Define to 1 if libpciaccess is available])
+    AC_SUBST([PCIACCESS_CFLAGS])
+    AC_SUBST([PCIACCESS_LIBS])
+fi
 
 CFLAGS="$CFLAGS $XORG_CFLAGS -Wall"
 INCLUDES="$XORG_INCS -I${sdkdir} "'-I$(top_srcdir)/include'
 AC_SUBST([CFLAGS])
 AC_SUBST([INCLUDES])
 
-PKG_CHECK_MODULES(PCIACCESS, pciaccess)
-AC_SUBST([PCIACCESS_CFLAGS])
-AC_SUBST([PCIACCESS_LIBS])
-
 # Checks for libraries.
 
 # Checks for header files.
diff --git a/include/avivo_chipset.h b/include/avivo_chipset.h
index 5648048..37adbb2 100644
--- a/include/avivo_chipset.h
+++ b/include/avivo_chipset.h
@@ -136,7 +136,7 @@ enum avivo_chip_type {
 };
 
 #ifdef PCIACCESS
-extern const struct pci_id_match *avivo_device_match;
+extern const struct pci_id_match avivo_device_match[];
 #endif
 extern SymTabRec avivo_chips[];
 extern PciChipsets avivo_pci_chips[];
diff --git a/xorg/avivo.c b/xorg/avivo.c
index 98d3fd4..4eb2a38 100644
--- a/xorg/avivo.c
+++ b/xorg/avivo.c
@@ -140,6 +140,7 @@ static XF86ModuleVersionInfo avivo_version = {
  */
 _X_EXPORT XF86ModuleData avivoModuleData = { &avivo_version, avivo_setup, NULL };
 
+#ifndef PCIACCESS
 static int
 avivo_map_ctrl_mem(ScrnInfoPtr screen_info)
 {
@@ -148,14 +149,10 @@ avivo_map_ctrl_mem(ScrnInfoPtr screen_info)
     if (avivo->ctrl_base)
         return 1;
 
-#ifdef PCIACCESS
-    return 0;
-#else
     avivo->ctrl_base = xf86MapPciMem(screen_info->scrnIndex,
                                      VIDMEM_MMIO | VIDMEM_READSIDEEFFECT,
                                      avivo->pci_tag, avivo->ctrl_addr,
                                      avivo->ctrl_size);
-#endif
     if (!avivo->ctrl_base) {
         xf86DrvMsg(screen_info->scrnIndex, X_ERROR,
                    "Couldn't map control memory at %p", (void *)avivo->ctrl_addr);
@@ -172,13 +169,9 @@ avivo_map_fb_mem(ScrnInfoPtr screen_info)
     if (avivo->fb_base)
         return 0;
 
-#ifdef PCIACCESS
-    return 0;
-#else
     avivo->fb_base = xf86MapPciMem(screen_info->scrnIndex, VIDMEM_FRAMEBUFFER,
                                    avivo->pci_tag, avivo->fb_addr,
                                    avivo->fb_size);
-#endif
     if (!avivo->fb_base) {
         xf86DrvMsg(screen_info->scrnIndex, X_ERROR,
                    "Couldn't map fb memory at %p", (void *)avivo->fb_addr);
@@ -189,6 +182,7 @@ avivo_map_fb_mem(ScrnInfoPtr screen_info)
 
     return 1;
 }
+#endif /*PCIACCESS*/
 
 static void
 avivo_unmap_ctrl_mem(ScrnInfoPtr screen_info)
@@ -276,9 +270,9 @@ avivo_pci_probe(DriverPtr drv, int entity_num, struct pci_device *dev,
     ScrnInfoPtr screen_info;
     struct avivo_info *avivo;
     
-    pScrn = xf86ConfigPciEntity(NULL, 0, entity_num, NULL, 
-                                NULL, NULL, NULL, NULL, NULL);
-    if (pScrn) {
+    screen_info = xf86ConfigPciEntity(NULL, 0, entity_num, NULL, 
+                                      NULL, NULL, NULL, NULL, NULL);
+    if (screen_info) {
         avivo = avivo_get_info(screen_info);
         fill_in_screen(screen_info);
         avivo->pci_info = dev;
@@ -307,7 +301,7 @@ avivo_old_probe(DriverPtr drv, int flags)
     if (num_sections <= 0)
         return FALSE;
 
-#ifndef PCIACCESS
+/*#ifndef PCIACCESS*/
     used_sections = xf86MatchPciInstances(AVIVO_NAME, PCI_VENDOR_ATI,
                                           avivo_chips, avivo_pci_chips, 
                                           sections, num_sections, drv,
@@ -331,7 +325,7 @@ avivo_old_probe(DriverPtr drv, int flags)
 
         xfree(used_chips);
     }
-#endif
+/*#endif*/
 
     xfree(sections);
 
@@ -406,6 +400,82 @@ avivo_preinit(ScrnInfoPtr screen_info, int flags)
             avivo_map_fb_mem(screen_info);
         }
     }
+#else /*PCIACCESS*/
+    /* get PCI informations */
+    avivo->pci_info = xf86GetPciInfoForEntity(avivo->entity->index);
+
+    if (pci_device_probe (avivo->pci_info)) {
+        FatalError("failed to probe PCI device\n");
+    }
+
+    /*
+     * Map MMIO space first, then the framebuffer.
+     */
+
+    /*so first the MMIO space ...*/
+    for (i = 0; i < 6; i++) {
+        /*
+         * the mmio space is the one pointed to by the BAR
+         * that has 15 or 16 bits length (usually 64K size, 16 bits).
+         */
+        if (avivo->pci_info->regions[i].size == 0x10000/*sizeof(16bits)*/
+            ||avivo->pci_info->regions[i].size == 0x8000/*sizeof(15bits)*/) {
+            if (!avivo->pci_info->regions[i].memory) {
+                if (pci_device_map_region(avivo->pci_info,
+                                          i,
+                                          1/*write_enable*/)) {
+
+                    FatalError("Could not map pci region %d,"
+                               " device %#x, vendor %#x\n",
+                               i,
+                               avivo->pci_info->device_id,
+                               avivo->pci_info->vendor_id);
+                }
+            }
+            avivo->ctrl_addr = avivo->pci_info->regions[i].base_addr ;
+            avivo->ctrl_size = avivo->pci_info->regions[i].size ;
+            avivo->ctrl_base = avivo->pci_info->regions[i].memory;
+        }
+    }
+    /*...now, map the framebuffer memory*/
+    for (i = 0; i < 6; i++) {
+        /*
+         * the framebuffer buffer is the one pointed to by
+         * the BAR having a size >= 26 bits
+         */
+        if (avivo->pci_info->regions[i].size >= 0x4000000/*size(26bits)*/) {
+            if (!avivo->pci_info->regions[i].memory) {
+                if (pci_device_map_region(avivo->pci_info,
+                                          i,
+                                          1/*write_enable*/)) {
+
+                    FatalError("Could not map pci region %d,"
+                               " device %#x, vendor %#x\n",
+                               i,
+                               avivo->pci_info->device_id,
+                               avivo->pci_info->vendor_id);
+                }
+            }
+            avivo->fb_addr = avivo->pci_info->regions[i].base_addr;
+            avivo->fb_base = avivo->pci_info->regions[i].memory ;
+            avivo->fb_size = INREG(RADEON_CONFIG_MEMSIZE);
+            /*
+             * fb memory size should be the minum of bar size
+             * and the result of INREG(RADEON_CONFIG_MEMSIZE);
+             * Normally both should be the same, but who knows
+             * what some card manufacturers do sometimes ...
+             */
+            if (avivo->pci_info->regions[i].size < avivo->fb_size)
+                avivo->fb_size = avivo->pci_info->regions[i].size ;
+
+            /* FIXME: we can't map more than 256Mo better solution would be
+             * to get aperture size */
+            if (avivo->fb_size > 0x10000000)
+                avivo->fb_size = 0x10000000;
+            screen_info->videoRam = avivo->fb_size / 1024;
+        }
+    }
+
 #endif
     xf86DrvMsg(screen_info->scrnIndex, X_INFO,
                "Control memory at %p[size = %d, 0x%08X]\n",
diff --git a/xorg/avivo_bios.c b/xorg/avivo_bios.c
index 3ec8422..260ca44 100644
--- a/xorg/avivo_bios.c
+++ b/xorg/avivo_bios.c
@@ -59,7 +59,7 @@ RADEONGetBIOSInfo(ScrnInfoPtr screen_info)
     unsigned short dptr;
 
 #ifdef PCIACCESS
-    if (!(avivo->vbios = xalloc(avivo->pci_avivo->rom_size))) {
+    if (!(avivo->vbios = xalloc(avivo->pci_info->rom_size))) {
         xf86DrvMsg(screen_info->scrnIndex, X_ERROR,
                    "Cannot allocate space for hold Video BIOS!\n");
         return 1;
diff --git a/xorg/avivo_chipset.c b/xorg/avivo_chipset.c
index c6478ec..78bd0e1 100644
--- a/xorg/avivo_chipset.c
+++ b/xorg/avivo_chipset.c
@@ -631,10 +631,18 @@ avivo_get_chipset(struct avivo_info *avivo)
     int i;
 
     for (i = 0; i < sizeof(chipset_family) / sizeof(chipset_family[0]); i++) {
+#ifdef PCIACCESS
+        if (chipset_family[i].pci_id == avivo->pci_info->device_id) {
+#else
         if (chipset_family[i].pci_id == avivo->pci_info->chipType) {
+#endif /*PCIACCESS*/
             avivo->chipset = chipset_family[i].family;
             return;
         }
     }
+#ifdef PCIACCESS
+    FatalError("Unknown chipset for %x!\n", avivo->pci_info->device_id);
+#else
     FatalError("Unknown chipset for %x!\n", avivo->pci_info->device);
+#endif /*PCIACCESS*/
 }
diff --git a/xorg/avivo_cursor.c b/xorg/avivo_cursor.c
index 5398438..735bdef 100644
--- a/xorg/avivo_cursor.c
+++ b/xorg/avivo_cursor.c
@@ -155,7 +155,6 @@ void
 avivo_cursor_init(ScreenPtr screen)
 {
     ScrnInfoPtr screen_info = xf86Screens[screen->myNum];
-    struct avivo_info *avivo = avivo_get_info(screen_info);
     xf86CursorInfoPtr cursor;
 
     cursor = xcalloc(1, sizeof(*cursor));