* @val: fill value
* @offset: offset in pages to start transaction
* @len: length in bytes
- * @flags: ASYNC_TX_ASSUME_COHERENT, ASYNC_TX_ACK, ASYNC_TX_DEP_ACK
+ * @flags: ASYNC_TX_ACK, ASYNC_TX_DEP_ACK
* @depend_tx: memset depends on the result of this transaction
* @cb_fn: function to call when the memcpy completes
* @cb_param: parameter to pass to the callback routine
struct dma_async_tx_descriptor *depend_tx,
dma_async_tx_callback cb_fn, void *cb_param)
{
- struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET);
+ struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET,
+ &dest, 1, NULL, 0, len);
struct dma_device *device = chan ? chan->device : NULL;
- int int_en = cb_fn ? 1 : 0;
- struct dma_async_tx_descriptor *tx = device ?
- device->device_prep_dma_memset(chan, val, len,
- int_en) : NULL;
+ struct dma_async_tx_descriptor *tx = NULL;
- if (tx) { /* run the memset asynchronously */
- dma_addr_t dma_addr;
- enum dma_data_direction dir;
+ if (device) {
+ dma_addr_t dma_dest;
+ unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
- pr_debug("%s: (async) len: %zu\n", __FUNCTION__, len);
- dir = (flags & ASYNC_TX_ASSUME_COHERENT) ?
- DMA_NONE : DMA_FROM_DEVICE;
+ dma_dest = dma_map_page(device->dev, dest, offset, len,
+ DMA_FROM_DEVICE);
- dma_addr = dma_map_page(device->dev, dest, offset, len, dir);
- tx->tx_set_dest(dma_addr, tx, 0);
+ tx = device->device_prep_dma_memset(chan, dma_dest, val, len,
+ dma_prep_flags);
+ }
+ if (tx) {
+ pr_debug("%s: (async) len: %zu\n", __func__, len);
async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);
} else { /* run the memset synchronously */
void *dest_buf;
- pr_debug("%s: (sync) len: %zu\n", __FUNCTION__, len);
+ pr_debug("%s: (sync) len: %zu\n", __func__, len);
dest_buf = (void *) (((char *) page_address(dest)) + offset);
/* wait for any prerequisite operations */
- if (depend_tx) {
- /* if ack is already set then we cannot be sure
- * we are referring to the correct operation
- */
- BUG_ON(depend_tx->ack);
- if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR)
- panic("%s: DMA_ERROR waiting for depend_tx\n",
- __FUNCTION__);
- }
+ async_tx_quiesce(&depend_tx);
memset(dest_buf, val, len);