Re: xsrc/42262: Thinkpad T500 Intel GM45 Express X doesn't like i915drm

[Jeremy Morse <jeremy.morse%gmail.com@localhost>]

Looks like an intel-agp resource conflict - there's a clause in
drm_netbsd_ioremap to catch one case of this, but not in another
situation where it can occur. The attached patch might fix this.

-- 
Thanks,
Jeremy

Index: drm_memory.c
===================================================================
RCS file: /cvsroot/src/sys/external/bsd/drm/dist/bsd-core/drm_memory.c,v
retrieving revision 1.6
diff -u -p -r1.6 drm_memory.c
--- drm_memory.c        2 Sep 2009 01:36:41 -0000       1.6
+++ drm_memory.c        4 Nov 2009 11:32:34 -0000
@@ -158,6 +158,10 @@ drm_netbsd_ioremap(struct drm_device *de
                                dev->agp_map_data[i].flags, &map->bsh);
                        if (rv) {
                                dev->agp_map_data[i].mapped--;
+#if NAGP_I810 > 0 /* XXX even more i810 kludge */
+                               if (agp_i810_borrow(map->offset, &map->bsh))
+                                       return bus_space_vaddr(map->bst, 
map->bsh);
+#endif
                                DRM_DEBUG("ioremap: failed to map (%d)\n", rv);
                                return NULL;
                        }