diff options
Diffstat (limited to 'linux-core')
-rw-r--r-- | linux-core/drmP.h | 3 | ||||
-rw-r--r-- | linux-core/drm_bo.c | 160 | ||||
-rw-r--r-- | linux-core/drm_ttm.c | 56 | ||||
-rw-r--r-- | linux-core/drm_ttm.h | 7 |
4 files changed, 207 insertions, 19 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h index f83b4b4b..07f3571b 100644 --- a/linux-core/drmP.h +++ b/linux-core/drmP.h @@ -949,8 +949,9 @@ typedef struct drm_buffer_object{ drm_device_t *dev; drm_user_object_t base; atomic_t usage; - drm_map_list_t *ttm_maplist; + drm_ttm_object_t *ttm_object; drm_ttm_backend_list_t *ttm_region; + void __user *user_pages; atomic_t mapped; diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c index 0aa0b138..affee135 100644 --- a/linux-core/drm_bo.c +++ b/linux-core/drm_bo.c @@ -148,7 +148,7 @@ static int drm_move_tt_to_local(drm_buffer_object_t *buf, int lazy) } -void destroy_buffer_object(drm_device_t *dev, drm_buffer_object_t *bo) +static void drm_bo_destroy_locked(drm_device_t *dev, drm_buffer_object_t *bo) { drm_buffer_manager_t *bm = &dev->bm; @@ -189,6 +189,31 @@ void destroy_buffer_object(drm_device_t *dev, drm_buffer_object_t *bo) drm_free(bo, sizeof(*bo), DRM_MEM_BUFOBJ); } + +void drm_bo_usage_deref_locked(drm_device_t *dev, drm_buffer_object_t *bo) +{ + if (atomic_dec_and_test(&bo->usage)) { + drm_bo_destroy_locked(dev, bo); + } +} + +void drm_bo_usage_deref_unlocked(drm_device_t *dev, drm_buffer_object_t *bo) +{ + if (atomic_dec_and_test(&bo->usage)) { + mutex_lock(&dev->struct_mutex); + if (atomic_read(&bo->usage) == 0) + drm_bo_destroy_locked(dev, bo); + mutex_unlock(&dev->struct_mutex); + } +} + +static void drm_bo_base_deref_locked(drm_file_t *priv, drm_user_object_t *uo) +{ + drm_bo_usage_deref_locked(priv->head->dev, + drm_user_object_entry(uo, drm_buffer_object_t, base)); +} + + static int drm_bo_new_flags(uint32_t flags, uint32_t new_mask, uint32_t hint, int init, uint32_t *n_flags) { @@ -399,6 +424,9 @@ static int drm_bo_busy(drm_device_t *dev, drm_buffer_object_t *bo) /* * Wait for buffer idle and register that we've mapped the buffer. + * Mapping is registered as a drm_ref_object with type _DRM_REF_TYPE1, + * so that if the client dies, the mapping is automatically + * unregistered. */ @@ -421,13 +449,15 @@ static int drm_buffer_object_map(drm_file_t *priv, uint32_t handle, int wait) if ((atomic_read(&bo->mapped) == 0) && drm_bo_busy(dev, bo)) { mutex_unlock(&bo->mutex); - return -EBUSY; + ret = -EBUSY; + goto out; } } else { ret = drm_bo_wait(dev, bo, 0); if (ret) { mutex_unlock(&bo->mutex); - return -EBUSY; + ret = -EBUSY; + goto out; } } mutex_lock(&dev->struct_mutex); @@ -438,11 +468,132 @@ static int drm_buffer_object_map(drm_file_t *priv, uint32_t handle, int wait) } mutex_unlock(&bo->mutex); + out: + drm_bo_usage_deref_unlocked(dev,bo); + return ret; +} + + +static int drm_buffer_object_unmap(drm_file_t *priv, uint32_t handle) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_object_t *bo; + drm_ref_object_t *ro; + int ret = 0; + + mutex_lock(&dev->struct_mutex); + + bo = drm_lookup_buffer_object(priv, handle, 1); + if (!bo) { + ret = -EINVAL; + goto out; + } + + ro = drm_lookup_ref_object(priv, &bo->base, _DRM_REF_TYPE1); + if (!ro) { + ret = -EINVAL; + goto out; + } + + drm_remove_ref_object(priv, ro); + drm_bo_usage_deref_locked(dev, bo); + out: + mutex_unlock(&dev->struct_mutex); return ret; } +/* + * Call struct-sem locked. + */ +static void drm_buffer_user_object_unmap(drm_file_t *priv, drm_user_object_t *uo) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_object_t *bo = drm_user_object_entry(uo, drm_buffer_object_t, base); + + if (atomic_dec_and_test(&bo->mapped)) { + mutex_unlock(&dev->struct_mutex); + mutex_lock(&bo->mutex); + if (atomic_read(&bo->mapped) == 0) { + DRM_WAKEUP(&bo->validate_queue); + } + mutex_unlock(&bo->mutex); + mutex_lock(&dev->struct_mutex); + } +} + +static int drm_buffer_object_validate(drm_device_t *dev, drm_buffer_object_t *bo) +{ + return 0; +} + +int drm_buffer_object_create(drm_file_t *priv, + int size, + drm_bo_type_t type, + uint32_t ttm_handle, + uint32_t mask, + uint32_t hint, + void __user *user_pages, + drm_buffer_object_t **buf_obj) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_object_t *bo; + int ret = 0; + uint32_t ttm_flags = 0; + + bo = drm_calloc(1, sizeof(*bo), DRM_MEM_BUFOBJ); + + if (!bo) + return -ENOMEM; + + mutex_init(&bo->mutex); + mutex_lock(&bo->mutex); + + atomic_set(&bo->usage, 1); + atomic_set(&bo->mapped, 0); + DRM_INIT_WAITQUEUE(&bo->validate_queue); + INIT_LIST_HEAD(&bo->head); + INIT_LIST_HEAD(&bo->ddestroy); + bo->dev = dev; + + switch(type) { + case drm_bo_type_dc: + ret = drm_ttm_object_create(dev, size, ttm_flags, &bo->ttm_object); + if (ret) + goto out_err; + break; + case drm_bo_type_ttm: + bo->ttm_object = drm_lookup_ttm_object(priv, ttm_handle, 1); + if (ret) + goto out_err; + break; + case drm_bo_type_user: + bo->user_pages = user_pages; + break; + default: + ret = -EINVAL; + goto out_err; + } + + bo->mask = mask; + bo->mask_hint = hint; + + ret = drm_buffer_object_validate(dev, bo); + if (ret) + goto out_err; + + mutex_unlock(&bo->mutex); + *buf_obj = bo; + return 0; + + out_err: + mutex_unlock(&bo->mutex); + drm_free(bo, sizeof(*bo), DRM_MEM_BUFOBJ); + return ret; +} + + int drm_bo_ioctl(DRM_IOCTL_ARGS) { @@ -459,6 +610,9 @@ int drm_bo_ioctl(DRM_IOCTL_ARGS) rep.ret = 0; rep.handled = 0; switch (req->op) { + case drm_bo_unmap: + rep.ret = drm_buffer_object_unmap(priv, req->handle); + break; case drm_bo_map: rep.ret = drm_buffer_object_map(priv, req->handle, !(req->hint & diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c index e76b41fb..cda3ec29 100644 --- a/linux-core/drm_ttm.c +++ b/linux-core/drm_ttm.c @@ -752,7 +752,6 @@ int drm_user_create_region(drm_device_t * dev, unsigned long start, int len, /* * dev->struct_mutex locked. */ - static void drm_ttm_object_remove(drm_device_t *dev, drm_ttm_object_t *object) { drm_map_list_t *list = &object->map_list; @@ -777,17 +776,24 @@ static void drm_ttm_object_remove(drm_device_t *dev, drm_ttm_object_t *object) drm_free(object, sizeof(*object), DRM_MEM_TTM); } + +void drm_ttm_object_deref_locked(drm_device_t *dev, drm_ttm_object_t *to) +{ + if (atomic_dec_and_test(&to->usage)) { + drm_ttm_object_remove(dev, to); + } +} + + /* * dev->struct_mutex locked. */ -static void drm_ttm_user_object_remove(drm_file_t *priv, drm_user_object_t *base) +static void drm_ttm_user_deref_locked(drm_file_t *priv, drm_user_object_t *base) { - drm_ttm_object_t *object; - drm_device_t *dev = priv->head->dev; - - object = drm_user_object_entry(base, drm_ttm_object_t, base); - if (atomic_dec_and_test(&object->usage)) - drm_ttm_object_remove(dev, object); + DRM_ERROR("User deref ttm\n"); + drm_ttm_object_deref_locked(priv->head->dev, + drm_user_object_entry(base, drm_ttm_object_t, + base)); } @@ -840,16 +846,33 @@ int drm_ttm_object_create(drm_device_t *dev, unsigned long size, } list->user_token = list->hash.key; - object->base.remove = drm_ttm_user_object_remove; - object->base.type = drm_ttm_type; - object->base.ref_struct_locked = NULL; - object->base.unref = NULL; atomic_set(&object->usage, 1); *ttm_object = object; return 0; } +drm_ttm_object_t *drm_lookup_ttm_object(drm_file_t *priv, uint32_t handle, + int check_owner) +{ + drm_user_object_t *uo; + drm_ttm_object_t *to; + + uo = drm_lookup_user_object(priv, handle); + + if (!uo || (uo->type != drm_ttm_type)) + return NULL; + + if (check_owner && priv != uo->owner) { + if (!drm_lookup_ref_object(priv, uo, _DRM_REF_USE)) + return NULL; + } + + to = drm_user_object_entry(uo, drm_ttm_object_t, base); + atomic_inc(&to->usage); + return to; +} + int drm_ttm_ioctl(DRM_IOCTL_ARGS) { @@ -878,6 +901,10 @@ int drm_ttm_ioctl(DRM_IOCTL_ARGS) mutex_unlock(&dev->struct_mutex); return ret; } + entry->base.remove = drm_ttm_user_deref_locked; + entry->base.type = drm_ttm_type; + entry->base.ref_struct_locked = NULL; + entry->base.unref = NULL; atomic_inc(&entry->usage); break; case drm_ttm_reference: @@ -885,8 +912,7 @@ int drm_ttm_ioctl(DRM_IOCTL_ARGS) if (ret) return ret; mutex_lock(&dev->struct_mutex); - uo = drm_lookup_user_object(priv, arg.handle); - entry = drm_user_object_entry(uo, drm_ttm_object_t, base); + entry = drm_lookup_ttm_object(priv, arg.handle , 0); break; case drm_ttm_unreference: return drm_user_object_unref(priv, arg.handle, drm_ttm_type); @@ -904,7 +930,7 @@ int drm_ttm_ioctl(DRM_IOCTL_ARGS) arg.handle = entry->base.hash.key; arg.user_token = entry->map_list.user_token; arg.size = drm_u64(entry->map_list.map->size); - atomic_dec(&entry->usage); + drm_ttm_object_deref_locked(dev, entry); mutex_unlock(&dev->struct_mutex); DRM_COPY_TO_USER_IOCTL((void __user *)data, arg, sizeof(arg)); diff --git a/linux-core/drm_ttm.h b/linux-core/drm_ttm.h index 6ebb1aa2..a87cf53e 100644 --- a/linux-core/drm_ttm.h +++ b/linux-core/drm_ttm.h @@ -108,6 +108,13 @@ typedef struct drm_ttm_object { drm_map_list_t map_list; } drm_ttm_object_t; +extern int drm_ttm_object_create(struct drm_device *dev, unsigned long size, + uint32_t flags, drm_ttm_object_t **ttm_object); +extern void drm_ttm_object_deref_locked(struct drm_device *dev, drm_ttm_object_t *to); +extern drm_ttm_object_t *drm_lookup_ttm_object(drm_file_t *priv, uint32_t handle, + int check_owner); + + |