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authorDan Williams <dan.j.williams@intel.com>2009-06-03 11:43:59 -0700
committerDan Williams <dan.j.williams@intel.com>2009-06-03 14:07:35 -0700
commita08abd8ca890a377521d65d493d174bebcaf694b (patch)
tree987c149a2d7d6ab345f426ac28191627b4a02a3e /crypto/async_tx/async_memset.c
parent88ba2aa586c874681c072101287e15d40de7e6e2 (diff)
downloadblackbird-op-linux-a08abd8ca890a377521d65d493d174bebcaf694b.tar.gz
blackbird-op-linux-a08abd8ca890a377521d65d493d174bebcaf694b.zip
async_tx: structify submission arguments, add scribble
Prepare the api for the arrival of a new parameter, 'scribble'. This will allow callers to identify scratchpad memory for dma address or page address conversions. As this adds yet another parameter, take this opportunity to convert the common submission parameters (flags, dependency, callback, and callback argument) into an object that is passed by reference. Also, take this opportunity to fix up the kerneldoc and add notes about the relevant ASYNC_TX_* flags for each routine. [ Impact: moves api pass-by-value parameters to a pass-by-reference struct ] Signed-off-by: Andre Noll <maan@systemlinux.org> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/async_tx/async_memset.c')
-rw-r--r--crypto/async_tx/async_memset.c25
1 files changed, 11 insertions, 14 deletions
diff --git a/crypto/async_tx/async_memset.c b/crypto/async_tx/async_memset.c
index b2f133885b7f..c14437238f4c 100644
--- a/crypto/async_tx/async_memset.c
+++ b/crypto/async_tx/async_memset.c
@@ -35,26 +35,23 @@
* @val: fill value
* @offset: offset in pages to start transaction
* @len: length in bytes
- * @flags: ASYNC_TX_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
+ *
+ * honored flags: ASYNC_TX_ACK
*/
struct dma_async_tx_descriptor *
-async_memset(struct page *dest, int val, unsigned int offset,
- size_t len, enum async_tx_flags flags,
- struct dma_async_tx_descriptor *depend_tx,
- dma_async_tx_callback cb_fn, void *cb_param)
+async_memset(struct page *dest, int val, unsigned int offset, size_t len,
+ struct async_submit_ctl *submit)
{
- struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET,
+ struct dma_chan *chan = async_tx_find_channel(submit, DMA_MEMSET,
&dest, 1, NULL, 0, len);
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;
if (device) {
dma_addr_t dma_dest;
- unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
+ unsigned long dma_prep_flags;
+ dma_prep_flags = submit->cb_fn ? DMA_PREP_INTERRUPT : 0;
dma_dest = dma_map_page(device->dev, dest, offset, len,
DMA_FROM_DEVICE);
@@ -64,19 +61,19 @@ async_memset(struct page *dest, int val, unsigned int offset,
if (tx) {
pr_debug("%s: (async) len: %zu\n", __func__, len);
- async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);
+ async_tx_submit(chan, tx, submit);
} else { /* run the memset synchronously */
void *dest_buf;
pr_debug("%s: (sync) len: %zu\n", __func__, len);
- dest_buf = (void *) (((char *) page_address(dest)) + offset);
+ dest_buf = page_address(dest) + offset;
/* wait for any prerequisite operations */
- async_tx_quiesce(&depend_tx);
+ async_tx_quiesce(&submit->depend_tx);
memset(dest_buf, val, len);
- async_tx_sync_epilog(cb_fn, cb_param);
+ async_tx_sync_epilog(submit);
}
return tx;
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