- Implement drm_initmap, and extend it with the resource number to help

    FreeBSD. Add drm_get_resource_{start|len} so linux-specific stuff
    doesn't need to be in shared code.
- Fix mach64 build by using __DECONST to work around passing a const
    pointer to useracc, which is unfortunately not marked const.
- Get rid of a lot of maplist code by not having dev->maplist be a pointer,
    and by sticking the link entries directly in drm_local_map_t rather
    than having a separate structure for the linked list.
- Factor out map uninit and removal into its own routine, rather than
    duplicating in both drm_takedown() and drm_rmmap().
- Hook up more driver functions, and correct FreeBSD-specific bits of
    radeon_cp.c, making radeon work.
- Baby steps towards using bus_space as we should.

1 files changed, 3 insertions, 5 deletions

diff --git a/bsd-core/drm_vm.c b/bsd-core/drm_vm.c
index 1b5d4d3f..2b5f0ef4 100644
--- a/bsd-core/drm_vm.c
+++ b/bsd-core/drm_vm.c
@@ -35,8 +35,7 @@ paddr_t drm_mmap(dev_t kdev, off_t offset, int prot)
 #endif
 {
 	DRM_DEVICE;
-	drm_local_map_t *map = NULL;
-	drm_map_list_entry_t *listentry = NULL;
+	drm_local_map_t *map;
 	drm_file_t *priv;
 	drm_map_type_t type;
 
@@ -81,13 +80,12 @@ paddr_t drm_mmap(dev_t kdev, off_t offset, int prot)
 				   for performance, even if the list was a
 				   bit longer. */
 	DRM_LOCK();
-	TAILQ_FOREACH(listentry, dev->maplist, link) {
-		map = listentry->map;
+	TAILQ_FOREACH(map, &dev->maplist, link) {
 		if (offset >= map->offset && offset < map->offset + map->size)
 			break;
 	}
 	
-	if (!listentry) {
+	if (map == NULL) {
 		DRM_UNLOCK();
 		DRM_DEBUG("can't find map\n");
 		return -1;