Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 05:11:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

async_pq_val: convert to dmaengine_unmap_data

Browse Source 
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>
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>
This commit is contained in:
Dan Williams 2013-10-18 19:35:30 +02:00
parent 7476bd79fc
commit 1786b943da
1 changed files with 35 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
crypto/async_tx/async_pq.c
View File

@ -290,50 +290,60 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
struct dma_async_tx_descriptor *tx;
unsigned char coefs[disks-2];
enum dma_ctrl_flags dma_flags = submit->cb_fn ? DMA_PREP_INTERRUPT : 0;
dma_addr_t *dma_src = NULL;
int src_cnt = 0;
struct dmaengine_unmap_data *unmap = NULL;
BUG_ON(disks < 4);
if (submit->scribble)
dma_src = submit->scribble;
else if (sizeof(dma_addr_t) <= sizeof(struct page *))
dma_src = (dma_addr_t *) blocks;
if (device)
unmap = dmaengine_get_unmap_data(device->dev, disks, GFP_NOIO);
if (dma_src && device && disks <= dma_maxpq(device, 0) &&
if (unmap && disks <= dma_maxpq(device, 0) &&
is_dma_pq_aligned(device, offset, 0, len)) {
struct device *dev = device->dev;
dma_addr_t *pq = &dma_src[disks-2];
int i;
dma_addr_t pq[2];
int i, j = 0, src_cnt = 0;
pr_debug("%s: (async) disks: %d len: %zu\n",
__func__, disks, len);
if (!P(blocks, disks))
unmap->len = len;
for (i = 0; i < disks-2; i++)
if (likely(blocks[i])) {
unmap->addr[j] = dma_map_page(dev, blocks[i],
offset, len,
DMA_TO_DEVICE);
coefs[j] = raid6_gfexp[i];
unmap->to_cnt++;
src_cnt++;
j++;
}
if (!P(blocks, disks)) {
pq[0] = 0;
dma_flags |= DMA_PREP_PQ_DISABLE_P;
else
} else {
pq[0] = dma_map_page(dev, P(blocks, disks),
offset, len,
DMA_TO_DEVICE);
if (!Q(blocks, disks))
unmap->addr[j++] = pq[0];
unmap->to_cnt++;
}
if (!Q(blocks, disks)) {
pq[1] = 0;
dma_flags |= DMA_PREP_PQ_DISABLE_Q;
else
} else {
pq[1] = dma_map_page(dev, Q(blocks, disks),
offset, len,
DMA_TO_DEVICE);
unmap->addr[j++] = pq[1];
unmap->to_cnt++;
}
if (submit->flags & ASYNC_TX_FENCE)
dma_flags |= DMA_PREP_FENCE;
for (i = 0; i < disks-2; i++)
if (likely(blocks[i])) {
dma_src[src_cnt] = dma_map_page(dev, blocks[i],
offset, len,
DMA_TO_DEVICE);
coefs[src_cnt] = raid6_gfexp[i];
src_cnt++;
}
for (;;) {
tx = device->device_prep_dma_pq_val(chan, pq, dma_src,
tx = device->device_prep_dma_pq_val(chan, pq,
unmap->addr,
src_cnt,
coefs,
len, pqres,
@ -343,6 +353,8 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
async_tx_quiesce(&submit->depend_tx);
dma_async_issue_pending(chan);
}
dma_set_unmap(tx, unmap);
async_tx_submit(chan, tx, submit);
return tx;