struct vmw_private *dev_priv = res->dev_priv;
struct idr *idr = &dev_priv->res_idr[res->func->res_type];
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
if (res->id != -1)
idr_remove(idr, res->id);
res->id = -1;
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
}
static void vmw_resource_release(struct kref *kref)
int id;
struct idr *idr = &dev_priv->res_idr[res->func->res_type];
- write_lock(&dev_priv->resource_lock);
- res->avail = false;
+ spin_lock(&dev_priv->resource_lock);
list_del_init(&res->lru_head);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
if (res->backup) {
struct ttm_buffer_object *bo = &res->backup->base;
else
kfree(res);
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
if (id != -1)
idr_remove(idr, id);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
}
void vmw_resource_unreference(struct vmw_resource **p_res)
BUG_ON(res->id != -1);
idr_preload(GFP_KERNEL);
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
ret = idr_alloc(idr, res, 1, 0, GFP_NOWAIT);
if (ret >= 0)
res->id = ret;
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
idr_preload_end();
return ret < 0 ? ret : 0;
}
kref_init(&res->kref);
res->hw_destroy = NULL;
res->res_free = res_free;
- res->avail = false;
res->dev_priv = dev_priv;
res->func = func;
INIT_LIST_HEAD(&res->lru_head);
return vmw_resource_alloc_id(res);
}
-/**
- * vmw_resource_activate
- *
- * @res: Pointer to the newly created resource
- * @hw_destroy: Destroy function. NULL if none.
- *
- * Activate a resource after the hardware has been made aware of it.
- * Set tye destroy function to @destroy. Typically this frees the
- * resource and destroys the hardware resources associated with it.
- * Activate basically means that the function vmw_resource_lookup will
- * find it.
- */
-void vmw_resource_activate(struct vmw_resource *res,
- void (*hw_destroy) (struct vmw_resource *))
-{
- struct vmw_private *dev_priv = res->dev_priv;
-
- write_lock(&dev_priv->resource_lock);
- res->avail = true;
- res->hw_destroy = hw_destroy;
- write_unlock(&dev_priv->resource_lock);
-}
/**
* vmw_user_resource_lookup_handle - lookup a struct resource from a
goto out_bad_resource;
res = converter->base_obj_to_res(base);
-
- read_lock(&dev_priv->resource_lock);
- if (!res->avail || res->res_free != converter->res_free) {
- read_unlock(&dev_priv->resource_lock);
- goto out_bad_resource;
- }
-
kref_get(&res->kref);
- read_unlock(&dev_priv->resource_lock);
*p_res = res;
ret = 0;
return ret;
}
+/**
+ * vmw_user_resource_lookup_handle - lookup a struct resource from a
+ * TTM user-space handle and perform basic type checks
+ *
+ * @dev_priv: Pointer to a device private struct
+ * @tfile: Pointer to a struct ttm_object_file identifying the caller
+ * @handle: The TTM user-space handle
+ * @converter: Pointer to an object describing the resource type
+ * @p_res: On successful return the location pointed to will contain
+ * a pointer to a refcounted struct vmw_resource.
+ *
+ * If the handle can't be found or is associated with an incorrect resource
+ * type, -EINVAL will be returned.
+ */
+struct vmw_resource *
+vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t handle,
+ const struct vmw_user_resource_conv
+ *converter)
+{
+ struct ttm_base_object *base;
+
+ base = ttm_base_object_noref_lookup(tfile, handle);
+ if (!base)
+ return ERR_PTR(-ESRCH);
+
+ if (unlikely(ttm_base_object_type(base) != converter->object_type)) {
+ ttm_base_object_noref_release();
+ return ERR_PTR(-EINVAL);
+ }
+
+ return converter->base_obj_to_res(base);
+}
+
/**
* Helper function that looks either a surface or bo.
*
if (!res->func->may_evict || res->id == -1 || res->pin_count)
return;
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
list_add_tail(&res->lru_head,
&res->dev_priv->res_lru[res->func->res_type]);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
}
/**
struct vmw_private *dev_priv = res->dev_priv;
int ret;
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
list_del_init(&res->lru_head);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
if (res->func->needs_backup && res->backup == NULL &&
!no_backup) {
/**
* vmw_resource_validate - Make a resource up-to-date and visible
* to the device.
- *
- * @res: The resource to make visible to the device.
+ * @res: The resource to make visible to the device.
+ * @intr: Perform waits interruptible if possible.
*
* On succesful return, any backup DMA buffer pointed to by @res->backup will
* be reserved and validated.
* On hardware resource shortage, this function will repeatedly evict
* resources of the same type until the validation succeeds.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted, negative error code
+ * on failure.
*/
-int vmw_resource_validate(struct vmw_resource *res)
+int vmw_resource_validate(struct vmw_resource *res, bool intr)
{
int ret;
struct vmw_resource *evict_res;
if (likely(ret != -EBUSY))
break;
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
if (list_empty(lru_list) || !res->func->may_evict) {
DRM_ERROR("Out of device device resources "
"for %s.\n", res->func->type_name);
ret = -EBUSY;
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
break;
}
lru_head));
list_del_init(&evict_res->lru_head);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
/* Trylock backup buffers with a NULL ticket. */
- ret = vmw_resource_do_evict(NULL, evict_res, true);
+ ret = vmw_resource_do_evict(NULL, evict_res, intr);
if (unlikely(ret != 0)) {
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
list_add_tail(&evict_res->lru_head, lru_list);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
if (ret == -ERESTARTSYS ||
++err_count > VMW_RES_EVICT_ERR_COUNT) {
vmw_resource_unreference(&evict_res);
struct ww_acquire_ctx ticket;
do {
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
if (list_empty(lru_list))
goto out_unlock;
list_first_entry(lru_list, struct vmw_resource,
lru_head));
list_del_init(&evict_res->lru_head);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
/* Wait lock backup buffers with a ticket. */
ret = vmw_resource_do_evict(&ticket, evict_res, false);
if (unlikely(ret != 0)) {
- write_lock(&dev_priv->resource_lock);
+ spin_lock(&dev_priv->resource_lock);
list_add_tail(&evict_res->lru_head, lru_list);
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
if (++err_count > VMW_RES_EVICT_ERR_COUNT) {
vmw_resource_unreference(&evict_res);
return;
} while (1);
out_unlock:
- write_unlock(&dev_priv->resource_lock);
+ spin_unlock(&dev_priv->resource_lock);
}
/**
/* Do we really need to pin the MOB as well? */
vmw_bo_pin_reserved(vbo, true);
}
- ret = vmw_resource_validate(res);
+ ret = vmw_resource_validate(res, interruptible);
if (vbo)
ttm_bo_unreserve(&vbo->base);
if (ret)
projects / linux-2.6-microblaze.git / blobdiff