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drm/msm: add put_iova() helper 

We'll need this too for shrinker/purging.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2016-06-01 11:38:28 -04:00
parent 4cd33c48ea
commit 4fe5f65e66
1 changed files with 21 additions and 9 deletions
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30
drivers/gpu/drm/msm/msm_gem.c
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@ -276,6 +276,26 @@ uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj)
return offset;
}
static void
put_iova(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct msm_drm_private *priv = obj->dev->dev_private;
struct msm_gem_object *msm_obj = to_msm_bo(obj);
int id;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
for (id = 0; id < ARRAY_SIZE(msm_obj->domain); id++) {
struct msm_mmu *mmu = priv->mmus[id];
if (mmu && msm_obj->domain[id].iova) {
uint32_t offset = msm_obj->domain[id].iova;
mmu->funcs->unmap(mmu, offset, msm_obj->sgt, obj->size);
msm_obj->domain[id].iova = 0;
}
}
}
/* should be called under struct_mutex.. although it can be called
* from atomic context without struct_mutex to acquire an extra
* iova ref if you know one is already held.
@ -608,9 +628,7 @@ void msm_gem_describe_objects(struct list_head *list, struct seq_file *m)
void msm_gem_free_object(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct msm_drm_private *priv = obj->dev->dev_private;
struct msm_gem_object *msm_obj = to_msm_bo(obj);
int id;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
@ -619,13 +637,7 @@ void msm_gem_free_object(struct drm_gem_object *obj)
list_del(&msm_obj->mm_list);
for (id = 0; id < ARRAY_SIZE(msm_obj->domain); id++) {
struct msm_mmu *mmu = priv->mmus[id];
if (mmu && msm_obj->domain[id].iova) {
uint32_t offset = msm_obj->domain[id].iova;
mmu->funcs->unmap(mmu, offset, msm_obj->sgt, obj->size);
}
}
put_iova(obj);
if (obj->import_attach) {
if (msm_obj->vaddr)