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path: root/crypto/async_tx/async_memset.c
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Diffstat (limited to 'crypto/async_tx/async_memset.c')
-rw-r--r--crypto/async_tx/async_memset.c38
1 files changed, 11 insertions, 27 deletions
diff --git a/crypto/async_tx/async_memset.c b/crypto/async_tx/async_memset.c
index 5b5eb99bb244..b896a6e5f673 100644
--- a/crypto/async_tx/async_memset.c
+++ b/crypto/async_tx/async_memset.c
@@ -35,26 +35,23 @@
35 * @val: fill value 35 * @val: fill value
36 * @offset: offset in pages to start transaction 36 * @offset: offset in pages to start transaction
37 * @len: length in bytes 37 * @len: length in bytes
38 * @flags: ASYNC_TX_ACK, ASYNC_TX_DEP_ACK 38 *
39 * @depend_tx: memset depends on the result of this transaction 39 * honored flags: ASYNC_TX_ACK
40 * @cb_fn: function to call when the memcpy completes
41 * @cb_param: parameter to pass to the callback routine
42 */ 40 */
43struct dma_async_tx_descriptor * 41struct dma_async_tx_descriptor *
44async_memset(struct page *dest, int val, unsigned int offset, 42async_memset(struct page *dest, int val, unsigned int offset, size_t len,
45 size_t len, enum async_tx_flags flags, 43 struct async_submit_ctl *submit)
46 struct dma_async_tx_descriptor *depend_tx,
47 dma_async_tx_callback cb_fn, void *cb_param)
48{ 44{
49 struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET, 45 struct dma_chan *chan = async_tx_find_channel(submit, DMA_MEMSET,
50 &dest, 1, NULL, 0, len); 46 &dest, 1, NULL, 0, len);
51 struct dma_device *device = chan ? chan->device : NULL; 47 struct dma_device *device = chan ? chan->device : NULL;
52 struct dma_async_tx_descriptor *tx = NULL; 48 struct dma_async_tx_descriptor *tx = NULL;
53 49
54 if (device) { 50 if (device) {
55 dma_addr_t dma_dest; 51 dma_addr_t dma_dest;
56 unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0; 52 unsigned long dma_prep_flags;
57 53
54 dma_prep_flags = submit->cb_fn ? DMA_PREP_INTERRUPT : 0;
58 dma_dest = dma_map_page(device->dev, dest, offset, len, 55 dma_dest = dma_map_page(device->dev, dest, offset, len,
59 DMA_FROM_DEVICE); 56 DMA_FROM_DEVICE);
60 57
@@ -64,38 +61,25 @@ async_memset(struct page *dest, int val, unsigned int offset,
64 61
65 if (tx) { 62 if (tx) {
66 pr_debug("%s: (async) len: %zu\n", __func__, len); 63 pr_debug("%s: (async) len: %zu\n", __func__, len);
67 async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param); 64 async_tx_submit(chan, tx, submit);
68 } else { /* run the memset synchronously */ 65 } else { /* run the memset synchronously */
69 void *dest_buf; 66 void *dest_buf;
70 pr_debug("%s: (sync) len: %zu\n", __func__, len); 67 pr_debug("%s: (sync) len: %zu\n", __func__, len);
71 68
72 dest_buf = (void *) (((char *) page_address(dest)) + offset); 69 dest_buf = page_address(dest) + offset;
73 70
74 /* wait for any prerequisite operations */ 71 /* wait for any prerequisite operations */
75 async_tx_quiesce(&depend_tx); 72 async_tx_quiesce(&submit->depend_tx);
76 73
77 memset(dest_buf, val, len); 74 memset(dest_buf, val, len);
78 75
79 async_tx_sync_epilog(cb_fn, cb_param); 76 async_tx_sync_epilog(submit);
80 } 77 }
81 78
82 return tx; 79 return tx;
83} 80}
84EXPORT_SYMBOL_GPL(async_memset); 81EXPORT_SYMBOL_GPL(async_memset);
85 82
86static int __init async_memset_init(void)
87{
88 return 0;
89}
90
91static void __exit async_memset_exit(void)
92{
93 do { } while (0);
94}
95
96module_init(async_memset_init);
97module_exit(async_memset_exit);
98
99MODULE_AUTHOR("Intel Corporation"); 83MODULE_AUTHOR("Intel Corporation");
100MODULE_DESCRIPTION("asynchronous memset api"); 84MODULE_DESCRIPTION("asynchronous memset api");
101MODULE_LICENSE("GPL"); 85MODULE_LICENSE("GPL");