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| author | Dan Williams <dan.j.williams@intel.com> | 2013-10-18 19:35:27 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2013-11-14 11:01:30 -0800 |
| commit | 173e86b2809234cb5f2a50e9a8c159b70e23da1c (patch) | |
| tree | f477ed2bea30a16ef39a973cf7ed5945b125f73e /crypto | |
| parent | fb36ab142b2f1dc8c8ad3750413efa7a5cc1c07b (diff) | |
| download | lwn-173e86b2809234cb5f2a50e9a8c159b70e23da1c.tar.gz lwn-173e86b2809234cb5f2a50e9a8c159b70e23da1c.zip | |
async_xor_val: convert to dmaengine_unmap_data
Use the generic unmap object to unmap dma buffers.
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[bzolnier: minor cleanups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/async_tx/async_xor.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c index f092fa14a745..d2cc77d501c7 100644 --- a/crypto/async_tx/async_xor.c +++ b/crypto/async_tx/async_xor.c @@ -275,18 +275,17 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, struct dma_chan *chan = xor_val_chan(submit, dest, src_list, src_cnt, len); struct dma_device *device = chan ? chan->device : NULL; struct dma_async_tx_descriptor *tx = NULL; - dma_addr_t *dma_src = NULL; + struct dmaengine_unmap_data *unmap = NULL; BUG_ON(src_cnt <= 1); - if (submit->scribble) - dma_src = submit->scribble; - else if (sizeof(dma_addr_t) <= sizeof(struct page *)) - dma_src = (dma_addr_t *) src_list; + if (device) + unmap = dmaengine_get_unmap_data(device->dev, src_cnt, GFP_NOIO); - if (dma_src && device && src_cnt <= device->max_xor && + if (unmap && src_cnt <= device->max_xor && is_dma_xor_aligned(device, offset, 0, len)) { - unsigned long dma_prep_flags = 0; + unsigned long dma_prep_flags = DMA_COMPL_SKIP_SRC_UNMAP | + DMA_COMPL_SKIP_DEST_UNMAP; int i; pr_debug("%s: (async) len: %zu\n", __func__, len); @@ -295,11 +294,15 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, dma_prep_flags |= DMA_PREP_INTERRUPT; if (submit->flags & ASYNC_TX_FENCE) dma_prep_flags |= DMA_PREP_FENCE; - for (i = 0; i < src_cnt; i++) - dma_src[i] = dma_map_page(device->dev, src_list[i], - offset, len, DMA_TO_DEVICE); - tx = device->device_prep_dma_xor_val(chan, dma_src, src_cnt, + for (i = 0; i < src_cnt; i++) { + unmap->addr[i] = dma_map_page(device->dev, src_list[i], + offset, len, DMA_TO_DEVICE); + unmap->to_cnt++; + } + unmap->len = len; + + tx = device->device_prep_dma_xor_val(chan, unmap->addr, src_cnt, len, result, dma_prep_flags); if (unlikely(!tx)) { @@ -308,11 +311,11 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, while (!tx) { dma_async_issue_pending(chan); tx = device->device_prep_dma_xor_val(chan, - dma_src, src_cnt, len, result, + unmap->addr, src_cnt, len, result, dma_prep_flags); } } - + dma_set_unmap(tx, unmap); async_tx_submit(chan, tx, submit); } else { enum async_tx_flags flags_orig = submit->flags; @@ -334,6 +337,7 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, async_tx_sync_epilog(submit); submit->flags = flags_orig; } + dmaengine_unmap_put(unmap); return tx; } |