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-rw-r--r--linux-core/drm_bufs.c16
-rw-r--r--linux-core/drm_fops.c12
2 files changed, 25 insertions, 3 deletions
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
index c508c392..b343a99a 100644
--- a/linux-core/drm_bufs.c
+++ b/linux-core/drm_bufs.c
@@ -56,7 +56,8 @@ static drm_local_map_t *drm_find_matching_map(drm_device_t *dev,
list_for_each(list, &dev->maplist->head) {
drm_map_list_t *entry = list_entry(list, drm_map_list_t, head);
if (entry->map && map->type == entry->map->type &&
- entry->map->offset == map->offset) {
+ ((entry->map->offset == map->offset) ||
+ (map->type == _DRM_SHM))) {
return entry->map;
}
}
@@ -163,6 +164,19 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
map->handle = drm_ioremap(map->offset, map->size, dev);
break;
case _DRM_SHM:
+ found_map = drm_find_matching_map(dev, map);
+ if (found_map != NULL) {
+ if (found_map->size != map->size) {
+ DRM_DEBUG("Matching maps of type %d with "
+ "mismatched sizes, (%ld vs %ld)\n",
+ map->type, map->size, found_map->size);
+ found_map->size = map->size;
+ }
+
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ *map_ptr = found_map;
+ return 0;
+ }
map->handle = vmalloc_32(map->size);
DRM_DEBUG("%lu %d %p\n",
map->size, drm_order(map->size), map->handle);
diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c
index 4e6cd8b4..ca70c2c8 100644
--- a/linux-core/drm_fops.c
+++ b/linux-core/drm_fops.c
@@ -34,18 +34,26 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
-#include "drmP.h"
#include <linux/poll.h>
+#include "drmP.h"
+#include "drm_sarea.h"
+
static int drm_open_helper(struct inode *inode, struct file *filp, drm_device_t * dev);
static int drm_setup(drm_device_t * dev)
{
+ drm_local_map_t *map;
int i;
if (dev->driver->presetup)
dev->driver->presetup(dev);
+ /* prebuild the SAREA */
+ i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, _DRM_CONTAINS_LOCK, &map);
+ if (i != 0)
+ return i;
+
atomic_set(&dev->ioctl_count, 0);
atomic_set(&dev->vma_count, 0);
dev->buf_use = 0;
@@ -72,7 +80,7 @@ static int drm_setup(drm_device_t * dev)
INIT_LIST_HEAD(&dev->ctxlist->head);
dev->vmalist = NULL;
- dev->sigdata.lock = dev->lock.hw_lock = NULL;
+ dev->sigdata.lock = NULL;
init_waitqueue_head(&dev->lock.lock_queue);
dev->queue_count = 0;
dev->queue_reserved = 0;