drm/sis: track user->memblock mapping with idr
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c
index 6ad0b85..64d329f 100644
--- a/drivers/gpu/drm/sis/sis_drv.c
+++ b/drivers/gpu/drm/sis/sis_drv.c
@@ -48,6 +48,7 @@
dev->dev_private = (void *)dev_priv;
dev_priv->chipset = chipset;
+ idr_init(&dev->object_name_idr);
ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
if (ret)
kfree(dev_priv);
@@ -60,6 +61,9 @@
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sman_takedown(&dev_priv->sman);
+ idr_remove_all(&dev_priv->object_idr);
+ idr_destroy(&dev_priv->object_idr);
+
kfree(dev_priv);
return 0;
diff --git a/drivers/gpu/drm/sis/sis_drv.h b/drivers/gpu/drm/sis/sis_drv.h
index 194303c..fcdd06a 100644
--- a/drivers/gpu/drm/sis/sis_drv.h
+++ b/drivers/gpu/drm/sis/sis_drv.h
@@ -60,6 +60,8 @@
int agp_initialized;
unsigned long vram_offset;
unsigned long agp_offset;
+ /** Mapping of userspace keys to mm objects */
+ struct idr object_idr;
} drm_sis_private_t;
extern int sis_idle(struct drm_device *dev);
diff --git a/drivers/gpu/drm/sis/sis_mm.c b/drivers/gpu/drm/sis/sis_mm.c
index c76a118..21d36df 100644
--- a/drivers/gpu/drm/sis/sis_mm.c
+++ b/drivers/gpu/drm/sis/sis_mm.c
@@ -125,7 +125,7 @@
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *mem = data;
- int retval = 0;
+ int retval = 0, user_key;
struct drm_memblock_item *item;
struct sis_file_private *file_priv = file->driver_priv;
@@ -141,23 +141,44 @@
mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0, 0);
-
- if (item) {
- list_add(&item->owner_list, &file_priv->obj_list);
- mem->offset = ((pool == 0) ?
- dev_priv->vram_offset : dev_priv->agp_offset) +
- (item->mm->
- offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
- mem->free = item->user_hash.key;
- mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
- } else {
- mem->offset = 0;
- mem->size = 0;
- mem->free = 0;
+ if (!item) {
retval = -ENOMEM;
+ goto fail_alloc;
}
+
+again:
+ if (idr_pre_get(&dev_priv->object_idr, GFP_KERNEL) == 0) {
+ retval = -ENOMEM;
+ goto fail_idr;
+ }
+
+ retval = idr_get_new_above(&dev_priv->object_idr, item, 1, &user_key);
+ if (retval == -EAGAIN)
+ goto again;
+ if (retval)
+ goto fail_idr;
+
+ list_add(&item->owner_list, &file_priv->obj_list);
mutex_unlock(&dev->struct_mutex);
+ mem->offset = ((pool == 0) ?
+ dev_priv->vram_offset : dev_priv->agp_offset) +
+ (item->mm->
+ offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
+ mem->free = user_key;
+ mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
+
+ return 0;
+
+fail_idr:
+ drm_sman_free(item);
+fail_alloc:
+ mutex_unlock(&dev->struct_mutex);
+
+ mem->offset = 0;
+ mem->size = 0;
+ mem->free = 0;
+
DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem->size,
mem->offset);
@@ -168,10 +189,18 @@
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *mem = data;
+ struct drm_memblock_item *obj;
int ret;
mutex_lock(&dev->struct_mutex);
- ret = drm_sman_free_key(&dev_priv->sman, mem->free);
+ obj = idr_find(&dev_priv->object_idr, mem->free);
+ if (obj == NULL) {
+ mutex_unlock(&dev->struct_mutex);
+ return -EINVAL;
+ }
+
+ idr_remove(&dev_priv->object_idr, mem->free);
+ drm_sman_free(obj);
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("free = 0x%lx\n", mem->free);
diff --git a/drivers/gpu/drm/via/via_map.c b/drivers/gpu/drm/via/via_map.c
index b09f659..fa5afbc 100644
--- a/drivers/gpu/drm/via/via_map.c
+++ b/drivers/gpu/drm/via/via_map.c
@@ -126,6 +126,8 @@
drm_via_private_t *dev_priv = dev->dev_private;
drm_sman_takedown(&dev_priv->sman);
+ idr_remove_all(&dev_priv->object_idr);
+ idr_destroy(&dev_priv->object_idr);
kfree(dev_priv);