spinlock_t lock;
/* protected by vc.lock */
- struct list_head desc_allocated;
struct list_head desc_submitted;
struct list_head desc_issued;
struct list_head desc_completed;
/**
* vchan_tx_prep - prepare a descriptor
- * vc: virtual channel allocating this descriptor
- * vd: virtual descriptor to prepare
- * tx_flags: flags argument passed in to prepare function
+ * @vc: virtual channel allocating this descriptor
+ * @vd: virtual descriptor to prepare
+ * @tx_flags: flags argument passed in to prepare function
*/
static inline struct dma_async_tx_descriptor *vchan_tx_prep(struct virt_dma_chan *vc,
struct virt_dma_desc *vd, unsigned long tx_flags)
{
extern dma_cookie_t vchan_tx_submit(struct dma_async_tx_descriptor *);
- unsigned long flags;
dma_async_tx_descriptor_init(&vd->tx, &vc->chan);
vd->tx.flags = tx_flags;
vd->tx.tx_submit = vchan_tx_submit;
- spin_lock_irqsave(&vc->lock, flags);
- list_add_tail(&vd->node, &vc->desc_allocated);
- spin_unlock_irqrestore(&vc->lock, flags);
-
return &vd->tx;
}
/**
* vchan_issue_pending - move submitted descriptors to issued list
- * vc: virtual channel to update
+ * @vc: virtual channel to update
*
* vc.lock must be held by caller
*/
/**
* vchan_cookie_complete - report completion of a descriptor
- * vd: virtual descriptor to update
+ * @vd: virtual descriptor to update
*
* vc.lock must be held by caller
*/
/**
* vchan_cyclic_callback - report the completion of a period
- * vd: virtual descriptor
+ * @vd: virtual descriptor
*/
static inline void vchan_cyclic_callback(struct virt_dma_desc *vd)
{
/**
* vchan_next_desc - peek at the next descriptor to be processed
- * vc: virtual channel to obtain descriptor from
+ * @vc: virtual channel to obtain descriptor from
*
* vc.lock must be held by caller
*/
}
/**
- * vchan_get_all_descriptors - obtain all allocated, submitted and issued
- * descriptors
- * vc: virtual channel to get descriptors from
- * head: list of descriptors found
+ * vchan_get_all_descriptors - obtain all submitted and issued descriptors
+ * @vc: virtual channel to get descriptors from
+ * @head: list of descriptors found
*
* vc.lock must be held by caller
*
static inline void vchan_get_all_descriptors(struct virt_dma_chan *vc,
struct list_head *head)
{
- list_splice_tail_init(&vc->desc_allocated, head);
list_splice_tail_init(&vc->desc_submitted, head);
list_splice_tail_init(&vc->desc_issued, head);
list_splice_tail_init(&vc->desc_completed, head);
static inline void vchan_free_chan_resources(struct virt_dma_chan *vc)
{
- struct virt_dma_desc *vd;
unsigned long flags;
LIST_HEAD(head);
spin_lock_irqsave(&vc->lock, flags);
vchan_get_all_descriptors(vc, &head);
- list_for_each_entry(vd, &head, node)
- async_tx_clear_ack(&vd->tx);
spin_unlock_irqrestore(&vc->lock, flags);
vchan_dma_desc_free_list(vc, &head);