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async_tx: allow architecture specific async_tx_find_channel implementations 

The source and destination addresses are included to allow channel
selection based on address alignment.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
Dan Williams 2008-02-02 19:49:59 -07:00
parent d4c56f97ff
commit 47437b2c9a
5 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
crypto/async_tx/async_memcpy.c
View File

@ -46,7 +46,8 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
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_MEMCPY);
struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMCPY,
&dest, 1, &src, 1, len);
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;

3
crypto/async_tx/async_memset.c
View File

@ -46,7 +46,8 @@ async_memset(struct page *dest, int val, unsigned int offset,
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;
struct dma_async_tx_descriptor *tx = NULL;

6
crypto/async_tx/async_tx.c
View File

@ -361,13 +361,13 @@ static void __exit async_tx_exit(void)
}
/**
* async_tx_find_channel - find a channel to carry out the operation or let
* __async_tx_find_channel - find a channel to carry out the operation or let
* the transaction execute synchronously
* @depend_tx: transaction dependency
* @tx_type: transaction type
*/
struct dma_chan *
async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
__async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
enum dma_transaction_type tx_type)
{
/* see if we can keep the chain on one channel */
@ -383,7 +383,7 @@ async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
} else
return NULL;
}
EXPORT_SYMBOL_GPL(async_tx_find_channel);
EXPORT_SYMBOL_GPL(__async_tx_find_channel);
#else
static int __init async_tx_init(void)
{

8
crypto/async_tx/async_xor.c
View File

@ -129,7 +129,9 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset,
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_XOR);
struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_XOR,
&dest, 1, src_list,
src_cnt, len);
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;
dma_async_tx_callback _cb_fn;
@ -261,7 +263,9 @@ async_xor_zero_sum(struct page *dest, struct page **src_list,
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_ZERO_SUM);
struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_ZERO_SUM,
&dest, 1, src_list,
src_cnt, len);
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;

11
include/linux/async_tx.h
View File

@ -62,9 +62,15 @@ enum async_tx_flags {
void async_tx_issue_pending_all(void);
enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
void async_tx_run_dependencies(struct dma_async_tx_descriptor *tx);
#ifdef CONFIG_ARCH_HAS_ASYNC_TX_FIND_CHANNEL
#include <asm/async_tx.h>
#else
#define async_tx_find_channel(dep, type, dst, dst_count, src, src_count, len) \
__async_tx_find_channel(dep, type)
struct dma_chan *
async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
__async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
enum dma_transaction_type tx_type);
#endif /* CONFIG_ARCH_HAS_ASYNC_TX_FIND_CHANNEL */
#else
static inline void async_tx_issue_pending_all(void)
{
@ -86,7 +92,8 @@ async_tx_run_dependencies(struct dma_async_tx_descriptor *tx,
static inline struct dma_chan *
async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
enum dma_transaction_type tx_type)
enum dma_transaction_type tx_type, struct page **dst, int dst_count,
struct page **src, int src_count, size_t len)
{
return NULL;
}