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author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-11-25 05:57:23 -0200 |
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committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-11-25 05:57:23 -0200 |
commit | 2d913b33066b19294e6ea3e5caed196751ecf17e (patch) | |
tree | 7b0b2d8571a708b3f036ed99e019264bb19aa4ab /crypto/async_tx/async_raid6_recov.c | |
parent | 865ed240c10f285120a40a9d22893531644b71b9 (diff) | |
parent | cc86779540677b99e6adc6ddbe9be3bded3cdd1e (diff) | |
download | linux-crypto-2d913b33066b19294e6ea3e5caed196751ecf17e.tar.gz linux-crypto-2d913b33066b19294e6ea3e5caed196751ecf17e.zip |
Merge tag 'v3.13-rc1' into patchwork
Linux 3.13-rc1
* tag 'v3.13-rc1': (11465 commits)
Linux 3.13-rc1
ALSA: hda - Set current_headset_type to ALC_HEADSET_TYPE_ENUM (janitorial)
ALSA: hda - Provide missing pin configs for VAIO with ALC260
mm: place page->pmd_huge_pte to right union
MAINTAINERS: add keyboard driver to Hyper-V file list
x86, mm: do not leak page->ptl for pmd page tables
ipc,shm: correct error return value in shmctl (SHM_UNLOCK)
mm, mempolicy: silence gcc warning
block/partitions/efi.c: fix bound check
ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown
mm: hugetlbfs: fix hugetlbfs optimization
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS cleanly
ipc,shm: fix shm_file deletion races
mm: thp: give transparent hugepage code a separate copy_page
checkpatch: fix "Use of uninitialized value" warnings
configfs: fix race between dentry put and lookup
gso: handle new frag_list of frags GRO packets
GFS2: Fix ref count bug relating to atomic_open
genetlink: fix genl_set_err() group ID
genetlink: fix genlmsg_multicast() bug
...
Diffstat (limited to 'crypto/async_tx/async_raid6_recov.c')
-rw-r--r-- | crypto/async_tx/async_raid6_recov.c | 61 |
1 files changed, 43 insertions, 18 deletions
diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index a9f08a6a..934a8498 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -26,6 +26,7 @@ #include <linux/dma-mapping.h> #include <linux/raid/pq.h> #include <linux/async_tx.h> +#include <linux/dmaengine.h> static struct dma_async_tx_descriptor * async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, @@ -34,35 +35,45 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ, &dest, 1, srcs, 2, len); struct dma_device *dma = chan ? chan->device : NULL; + struct dmaengine_unmap_data *unmap = NULL; const u8 *amul, *bmul; u8 ax, bx; u8 *a, *b, *c; - if (dma) { - dma_addr_t dma_dest[2]; - dma_addr_t dma_src[2]; + if (dma) + unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOIO); + + if (unmap) { struct device *dev = dma->dev; + dma_addr_t pq[2]; struct dma_async_tx_descriptor *tx; enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P; if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; - dma_dest[1] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); - dma_src[0] = dma_map_page(dev, srcs[0], 0, len, DMA_TO_DEVICE); - dma_src[1] = dma_map_page(dev, srcs[1], 0, len, DMA_TO_DEVICE); - tx = dma->device_prep_dma_pq(chan, dma_dest, dma_src, 2, coef, + unmap->addr[0] = dma_map_page(dev, srcs[0], 0, len, DMA_TO_DEVICE); + unmap->addr[1] = dma_map_page(dev, srcs[1], 0, len, DMA_TO_DEVICE); + unmap->to_cnt = 2; + + unmap->addr[2] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); + unmap->bidi_cnt = 1; + /* engine only looks at Q, but expects it to follow P */ + pq[1] = unmap->addr[2]; + + unmap->len = len; + tx = dma->device_prep_dma_pq(chan, pq, unmap->addr, 2, coef, len, dma_flags); if (tx) { + dma_set_unmap(tx, unmap); async_tx_submit(chan, tx, submit); + dmaengine_unmap_put(unmap); return tx; } /* could not get a descriptor, unmap and fall through to * the synchronous path */ - dma_unmap_page(dev, dma_dest[1], len, DMA_BIDIRECTIONAL); - dma_unmap_page(dev, dma_src[0], len, DMA_TO_DEVICE); - dma_unmap_page(dev, dma_src[1], len, DMA_TO_DEVICE); + dmaengine_unmap_put(unmap); } /* run the operation synchronously */ @@ -89,23 +100,38 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ, &dest, 1, &src, 1, len); struct dma_device *dma = chan ? chan->device : NULL; + struct dmaengine_unmap_data *unmap = NULL; const u8 *qmul; /* Q multiplier table */ u8 *d, *s; - if (dma) { + if (dma) + unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOIO); + + if (unmap) { dma_addr_t dma_dest[2]; - dma_addr_t dma_src[1]; struct device *dev = dma->dev; struct dma_async_tx_descriptor *tx; enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P; if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; - dma_dest[1] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); - dma_src[0] = dma_map_page(dev, src, 0, len, DMA_TO_DEVICE); - tx = dma->device_prep_dma_pq(chan, dma_dest, dma_src, 1, &coef, - len, dma_flags); + unmap->addr[0] = dma_map_page(dev, src, 0, len, DMA_TO_DEVICE); + unmap->to_cnt++; + unmap->addr[1] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); + dma_dest[1] = unmap->addr[1]; + unmap->bidi_cnt++; + unmap->len = len; + + /* this looks funny, but the engine looks for Q at + * dma_dest[1] and ignores dma_dest[0] as a dest + * due to DMA_PREP_PQ_DISABLE_P + */ + tx = dma->device_prep_dma_pq(chan, dma_dest, unmap->addr, + 1, &coef, len, dma_flags); + if (tx) { + dma_set_unmap(tx, unmap); + dmaengine_unmap_put(unmap); async_tx_submit(chan, tx, submit); return tx; } @@ -113,8 +139,7 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, /* could not get a descriptor, unmap and fall through to * the synchronous path */ - dma_unmap_page(dev, dma_dest[1], len, DMA_BIDIRECTIONAL); - dma_unmap_page(dev, dma_src[0], len, DMA_TO_DEVICE); + dmaengine_unmap_put(unmap); } /* no channel available, or failed to allocate a descriptor, so |