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drm/sis: track user->memblock mapping with idr

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Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2011-10-25 18:00:41 +02:00
parent 77ee8f3825
commit 6de8a74888
4 changed files with 52 additions and 15 deletions
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4
drivers/gpu/drm/sis/sis_drv.c
View File

@ -48,6 +48,7 @@ static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
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 @@ static int sis_driver_unload(struct drm_device *dev)
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;

2
drivers/gpu/drm/sis/sis_drv.h
View File

@ -60,6 +60,8 @@ typedef struct drm_sis_private {
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);

59
drivers/gpu/drm/sis/sis_mm.c
View File

@ -125,7 +125,7 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
{
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 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
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 @@ static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *fil
{
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);

2
drivers/gpu/drm/via/via_map.c
View File

@ -126,6 +126,8 @@ int via_driver_unload(struct drm_device *dev)
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);