diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 23:04:41 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 23:04:41 +0300 |
commit | 7cd4ecd9177b94af783b8e21de7c65b41a871342 (patch) | |
tree | 3ca393f3eaeeaad56d4ab60f87e28d7197b0ba21 /crypto | |
parent | 79ec6d9cac46d59db9b006bc9cde2811ef365292 (diff) | |
parent | 79cd16681acccffcf5521f6e3d8c7c50aaffca0a (diff) | |
download | linux-7cd4ecd9177b94af783b8e21de7c65b41a871342.tar.xz |
Merge tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"Here are the driver updates for 5.10.
A few SCSI updates in here too, in coordination with Martin as they
depend on core block changes for the shared tag bitmap.
This contains:
- NVMe pull requests via Christoph:
- fix keep alive timer modification (Amit Engel)
- order the PCI ID list more sensibly (Andy Shevchenko)
- cleanup the open by controller helper (Chaitanya Kulkarni)
- use an xarray for the CSE log lookup (Chaitanya Kulkarni)
- support ZNS in nvmet passthrough mode (Chaitanya Kulkarni)
- fix nvme_ns_report_zones (Christoph Hellwig)
- add a sanity check to nvmet-fc (James Smart)
- fix interrupt allocation when too many polled queues are
specified (Jeffle Xu)
- small nvmet-tcp optimization (Mark Wunderlich)
- fix a controller refcount leak on init failure (Chaitanya
Kulkarni)
- misc cleanups (Chaitanya Kulkarni)
- major refactoring of the scanning code (Christoph Hellwig)
- MD updates via Song:
- Bug fixes in bitmap code, from Zhao Heming
- Fix a work queue check, from Guoqing Jiang
- Fix raid5 oops with reshape, from Song Liu
- Clean up unused code, from Jason Yan
- Discard improvements, from Xiao Ni
- raid5/6 page offset support, from Yufen Yu
- Shared tag bitmap for SCSI/hisi_sas/null_blk (John, Kashyap,
Hannes)
- null_blk open/active zone limit support (Niklas)
- Set of bcache updates (Coly, Dongsheng, Qinglang)"
* tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (78 commits)
md/raid5: fix oops during stripe resizing
md/bitmap: fix memory leak of temporary bitmap
md: fix the checking of wrong work queue
md/bitmap: md_bitmap_get_counter returns wrong blocks
md/bitmap: md_bitmap_read_sb uses wrong bitmap blocks
md/raid0: remove unused function is_io_in_chunk_boundary()
nvme-core: remove extra condition for vwc
nvme-core: remove extra variable
nvme: remove nvme_identify_ns_list
nvme: refactor nvme_validate_ns
nvme: move nvme_validate_ns
nvme: query namespace identifiers before adding the namespace
nvme: revalidate zone bitmaps in nvme_update_ns_info
nvme: remove nvme_update_formats
nvme: update the known admin effects
nvme: set the queue limits in nvme_update_ns_info
nvme: remove the 0 lba_shift check in nvme_update_ns_info
nvme: clean up the check for too large logic block sizes
nvme: freeze the queue over ->lba_shift updates
nvme: factor out a nvme_configure_metadata helper
...
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/async_tx/async_pq.c | 72 | ||||
-rw-r--r-- | crypto/async_tx/async_raid6_recov.c | 163 | ||||
-rw-r--r-- | crypto/async_tx/async_xor.c | 120 | ||||
-rw-r--r-- | crypto/async_tx/raid6test.c | 24 |
4 files changed, 287 insertions, 92 deletions
diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c index 341ece61cf9b..f9cdc5e91664 100644 --- a/crypto/async_tx/async_pq.c +++ b/crypto/async_tx/async_pq.c @@ -104,7 +104,7 @@ do_async_gen_syndrome(struct dma_chan *chan, * do_sync_gen_syndrome - synchronously calculate a raid6 syndrome */ static void -do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks, +do_sync_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks, size_t len, struct async_submit_ctl *submit) { void **srcs; @@ -121,7 +121,8 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks, BUG_ON(i > disks - 3); /* P or Q can't be zero */ srcs[i] = (void*)raid6_empty_zero_page; } else { - srcs[i] = page_address(blocks[i]) + offset; + srcs[i] = page_address(blocks[i]) + offsets[i]; + if (i < disks - 2) { stop = i; if (start == -1) @@ -138,10 +139,23 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks, async_tx_sync_epilog(submit); } +static inline bool +is_dma_pq_aligned_offs(struct dma_device *dev, unsigned int *offs, + int src_cnt, size_t len) +{ + int i; + + for (i = 0; i < src_cnt; i++) { + if (!is_dma_pq_aligned(dev, offs[i], 0, len)) + return false; + } + return true; +} + /** * async_gen_syndrome - asynchronously calculate a raid6 syndrome * @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1 - * @offset: common offset into each block (src and dest) to start transaction + * @offsets: offset array into each block (src and dest) to start transaction * @disks: number of blocks (including missing P or Q, see below) * @len: length of operation in bytes * @submit: submission/completion modifiers @@ -160,7 +174,7 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks, * path. */ struct dma_async_tx_descriptor * -async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, +async_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks, size_t len, struct async_submit_ctl *submit) { int src_cnt = disks - 2; @@ -179,7 +193,7 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, if (unmap && !(submit->flags & ASYNC_TX_PQ_XOR_DST) && (src_cnt <= dma_maxpq(device, 0) || dma_maxpq(device, DMA_PREP_CONTINUE) > 0) && - is_dma_pq_aligned(device, offset, 0, len)) { + is_dma_pq_aligned_offs(device, offsets, disks, len)) { struct dma_async_tx_descriptor *tx; enum dma_ctrl_flags dma_flags = 0; unsigned char coefs[MAX_DISKS]; @@ -196,8 +210,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, for (i = 0, j = 0; i < src_cnt; i++) { if (blocks[i] == NULL) continue; - unmap->addr[j] = dma_map_page(device->dev, blocks[i], offset, - len, DMA_TO_DEVICE); + unmap->addr[j] = dma_map_page(device->dev, blocks[i], + offsets[i], len, DMA_TO_DEVICE); coefs[j] = raid6_gfexp[i]; unmap->to_cnt++; j++; @@ -210,7 +224,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, unmap->bidi_cnt++; if (P(blocks, disks)) unmap->addr[j++] = dma_map_page(device->dev, P(blocks, disks), - offset, len, DMA_BIDIRECTIONAL); + P(offsets, disks), + len, DMA_BIDIRECTIONAL); else { unmap->addr[j++] = 0; dma_flags |= DMA_PREP_PQ_DISABLE_P; @@ -219,7 +234,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, unmap->bidi_cnt++; if (Q(blocks, disks)) unmap->addr[j++] = dma_map_page(device->dev, Q(blocks, disks), - offset, len, DMA_BIDIRECTIONAL); + Q(offsets, disks), + len, DMA_BIDIRECTIONAL); else { unmap->addr[j++] = 0; dma_flags |= DMA_PREP_PQ_DISABLE_Q; @@ -240,13 +256,13 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks, if (!P(blocks, disks)) { P(blocks, disks) = pq_scribble_page; - BUG_ON(len + offset > PAGE_SIZE); + P(offsets, disks) = 0; } if (!Q(blocks, disks)) { Q(blocks, disks) = pq_scribble_page; - BUG_ON(len + offset > PAGE_SIZE); + Q(offsets, disks) = 0; } - do_sync_gen_syndrome(blocks, offset, disks, len, submit); + do_sync_gen_syndrome(blocks, offsets, disks, len, submit); return NULL; } @@ -270,6 +286,7 @@ pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, si * @len: length of operation in bytes * @pqres: on val failure SUM_CHECK_P_RESULT and/or SUM_CHECK_Q_RESULT are set * @spare: temporary result buffer for the synchronous case + * @s_off: spare buffer page offset * @submit: submission / completion modifiers * * The same notes from async_gen_syndrome apply to the 'blocks', @@ -278,9 +295,9 @@ pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, si * specified. */ struct dma_async_tx_descriptor * -async_syndrome_val(struct page **blocks, unsigned int offset, int disks, +async_syndrome_val(struct page **blocks, unsigned int *offsets, int disks, size_t len, enum sum_check_flags *pqres, struct page *spare, - struct async_submit_ctl *submit) + unsigned int s_off, struct async_submit_ctl *submit) { struct dma_chan *chan = pq_val_chan(submit, blocks, disks, len); struct dma_device *device = chan ? chan->device : NULL; @@ -295,7 +312,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, unmap = dmaengine_get_unmap_data(device->dev, disks, GFP_NOWAIT); if (unmap && disks <= dma_maxpq(device, 0) && - is_dma_pq_aligned(device, offset, 0, len)) { + is_dma_pq_aligned_offs(device, offsets, disks, len)) { struct device *dev = device->dev; dma_addr_t pq[2]; int i, j = 0, src_cnt = 0; @@ -307,7 +324,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, for (i = 0; i < disks-2; i++) if (likely(blocks[i])) { unmap->addr[j] = dma_map_page(dev, blocks[i], - offset, len, + offsets[i], len, DMA_TO_DEVICE); coefs[j] = raid6_gfexp[i]; unmap->to_cnt++; @@ -320,7 +337,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, dma_flags |= DMA_PREP_PQ_DISABLE_P; } else { pq[0] = dma_map_page(dev, P(blocks, disks), - offset, len, + P(offsets, disks), len, DMA_TO_DEVICE); unmap->addr[j++] = pq[0]; unmap->to_cnt++; @@ -330,7 +347,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, dma_flags |= DMA_PREP_PQ_DISABLE_Q; } else { pq[1] = dma_map_page(dev, Q(blocks, disks), - offset, len, + Q(offsets, disks), len, DMA_TO_DEVICE); unmap->addr[j++] = pq[1]; unmap->to_cnt++; @@ -355,7 +372,9 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, async_tx_submit(chan, tx, submit); } else { struct page *p_src = P(blocks, disks); + unsigned int p_off = P(offsets, disks); struct page *q_src = Q(blocks, disks); + unsigned int q_off = Q(offsets, disks); enum async_tx_flags flags_orig = submit->flags; dma_async_tx_callback cb_fn_orig = submit->cb_fn; void *scribble = submit->scribble; @@ -381,27 +400,32 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, if (p_src) { init_async_submit(submit, ASYNC_TX_XOR_ZERO_DST, NULL, NULL, NULL, scribble); - tx = async_xor(spare, blocks, offset, disks-2, len, submit); + tx = async_xor_offs(spare, s_off, + blocks, offsets, disks-2, len, submit); async_tx_quiesce(&tx); - p = page_address(p_src) + offset; - s = page_address(spare) + offset; + p = page_address(p_src) + p_off; + s = page_address(spare) + s_off; *pqres |= !!memcmp(p, s, len) << SUM_CHECK_P; } if (q_src) { P(blocks, disks) = NULL; Q(blocks, disks) = spare; + Q(offsets, disks) = s_off; init_async_submit(submit, 0, NULL, NULL, NULL, scribble); - tx = async_gen_syndrome(blocks, offset, disks, len, submit); + tx = async_gen_syndrome(blocks, offsets, disks, + len, submit); async_tx_quiesce(&tx); - q = page_address(q_src) + offset; - s = page_address(spare) + offset; + q = page_address(q_src) + q_off; + s = page_address(spare) + s_off; *pqres |= !!memcmp(q, s, len) << SUM_CHECK_Q; } /* restore P, Q and submit */ P(blocks, disks) = p_src; + P(offsets, disks) = p_off; Q(blocks, disks) = q_src; + Q(offsets, disks) = q_off; submit->cb_fn = cb_fn_orig; submit->cb_param = cb_param_orig; diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index f249142ceac4..354b8cd5537f 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -15,8 +15,9 @@ #include <linux/dmaengine.h> static struct dma_async_tx_descriptor * -async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, - size_t len, struct async_submit_ctl *submit) +async_sum_product(struct page *dest, unsigned int d_off, + struct page **srcs, unsigned int *src_offs, unsigned char *coef, + size_t len, struct async_submit_ctl *submit) { struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ, &dest, 1, srcs, 2, len); @@ -37,11 +38,14 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; - 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->addr[0] = dma_map_page(dev, srcs[0], src_offs[0], + len, DMA_TO_DEVICE); + unmap->addr[1] = dma_map_page(dev, srcs[1], src_offs[1], + len, DMA_TO_DEVICE); unmap->to_cnt = 2; - unmap->addr[2] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); + unmap->addr[2] = dma_map_page(dev, dest, d_off, + len, DMA_BIDIRECTIONAL); unmap->bidi_cnt = 1; /* engine only looks at Q, but expects it to follow P */ pq[1] = unmap->addr[2]; @@ -66,9 +70,9 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, async_tx_quiesce(&submit->depend_tx); amul = raid6_gfmul[coef[0]]; bmul = raid6_gfmul[coef[1]]; - a = page_address(srcs[0]); - b = page_address(srcs[1]); - c = page_address(dest); + a = page_address(srcs[0]) + src_offs[0]; + b = page_address(srcs[1]) + src_offs[1]; + c = page_address(dest) + d_off; while (len--) { ax = amul[*a++]; @@ -80,8 +84,9 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, } static struct dma_async_tx_descriptor * -async_mult(struct page *dest, struct page *src, u8 coef, size_t len, - struct async_submit_ctl *submit) +async_mult(struct page *dest, unsigned int d_off, struct page *src, + unsigned int s_off, u8 coef, size_t len, + struct async_submit_ctl *submit) { struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ, &dest, 1, &src, 1, len); @@ -101,9 +106,11 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; - unmap->addr[0] = dma_map_page(dev, src, 0, len, DMA_TO_DEVICE); + unmap->addr[0] = dma_map_page(dev, src, s_off, + len, DMA_TO_DEVICE); unmap->to_cnt++; - unmap->addr[1] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL); + unmap->addr[1] = dma_map_page(dev, dest, d_off, + len, DMA_BIDIRECTIONAL); dma_dest[1] = unmap->addr[1]; unmap->bidi_cnt++; unmap->len = len; @@ -133,8 +140,8 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, */ async_tx_quiesce(&submit->depend_tx); qmul = raid6_gfmul[coef]; - d = page_address(dest); - s = page_address(src); + d = page_address(dest) + d_off; + s = page_address(src) + s_off; while (len--) *d++ = qmul[*s++]; @@ -144,11 +151,14 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, static struct dma_async_tx_descriptor * __2data_recov_4(int disks, size_t bytes, int faila, int failb, - struct page **blocks, struct async_submit_ctl *submit) + struct page **blocks, unsigned int *offs, + struct async_submit_ctl *submit) { struct dma_async_tx_descriptor *tx = NULL; struct page *p, *q, *a, *b; + unsigned int p_off, q_off, a_off, b_off; struct page *srcs[2]; + unsigned int src_offs[2]; unsigned char coef[2]; enum async_tx_flags flags = submit->flags; dma_async_tx_callback cb_fn = submit->cb_fn; @@ -156,26 +166,34 @@ __2data_recov_4(int disks, size_t bytes, int faila, int failb, void *scribble = submit->scribble; p = blocks[disks-2]; + p_off = offs[disks-2]; q = blocks[disks-1]; + q_off = offs[disks-1]; a = blocks[faila]; + a_off = offs[faila]; b = blocks[failb]; + b_off = offs[failb]; /* in the 4 disk case P + Pxy == P and Q + Qxy == Q */ /* Dx = A*(P+Pxy) + B*(Q+Qxy) */ srcs[0] = p; + src_offs[0] = p_off; srcs[1] = q; + src_offs[1] = q_off; coef[0] = raid6_gfexi[failb-faila]; coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]]; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_sum_product(b, srcs, coef, bytes, submit); + tx = async_sum_product(b, b_off, srcs, src_offs, coef, bytes, submit); /* Dy = P+Pxy+Dx */ srcs[0] = p; + src_offs[0] = p_off; srcs[1] = b; + src_offs[1] = b_off; init_async_submit(submit, flags | ASYNC_TX_XOR_ZERO_DST, tx, cb_fn, cb_param, scribble); - tx = async_xor(a, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(a, a_off, srcs, src_offs, 2, bytes, submit); return tx; @@ -183,11 +201,14 @@ __2data_recov_4(int disks, size_t bytes, int faila, int failb, static struct dma_async_tx_descriptor * __2data_recov_5(int disks, size_t bytes, int faila, int failb, - struct page **blocks, struct async_submit_ctl *submit) + struct page **blocks, unsigned int *offs, + struct async_submit_ctl *submit) { struct dma_async_tx_descriptor *tx = NULL; struct page *p, *q, *g, *dp, *dq; + unsigned int p_off, q_off, g_off, dp_off, dq_off; struct page *srcs[2]; + unsigned int src_offs[2]; unsigned char coef[2]; enum async_tx_flags flags = submit->flags; dma_async_tx_callback cb_fn = submit->cb_fn; @@ -208,60 +229,77 @@ __2data_recov_5(int disks, size_t bytes, int faila, int failb, BUG_ON(good_srcs > 1); p = blocks[disks-2]; + p_off = offs[disks-2]; q = blocks[disks-1]; + q_off = offs[disks-1]; g = blocks[good]; + g_off = offs[good]; /* Compute syndrome with zero for the missing data pages * Use the dead data pages as temporary storage for delta p and * delta q */ dp = blocks[faila]; + dp_off = offs[faila]; dq = blocks[failb]; + dq_off = offs[failb]; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_memcpy(dp, g, 0, 0, bytes, submit); + tx = async_memcpy(dp, g, dp_off, g_off, bytes, submit); init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit); + tx = async_mult(dq, dq_off, g, g_off, + raid6_gfexp[good], bytes, submit); /* compute P + Pxy */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = p; + src_offs[1] = p_off; init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL, scribble); - tx = async_xor(dp, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit); /* compute Q + Qxy */ srcs[0] = dq; + src_offs[0] = dq_off; srcs[1] = q; + src_offs[1] = q_off; init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL, scribble); - tx = async_xor(dq, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit); /* Dx = A*(P+Pxy) + B*(Q+Qxy) */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = dq; + src_offs[1] = dq_off; coef[0] = raid6_gfexi[failb-faila]; coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]]; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_sum_product(dq, srcs, coef, bytes, submit); + tx = async_sum_product(dq, dq_off, srcs, src_offs, coef, bytes, submit); /* Dy = P+Pxy+Dx */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = dq; + src_offs[1] = dq_off; init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn, cb_param, scribble); - tx = async_xor(dp, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit); return tx; } static struct dma_async_tx_descriptor * __2data_recov_n(int disks, size_t bytes, int faila, int failb, - struct page **blocks, struct async_submit_ctl *submit) + struct page **blocks, unsigned int *offs, + struct async_submit_ctl *submit) { struct dma_async_tx_descriptor *tx = NULL; struct page *p, *q, *dp, *dq; + unsigned int p_off, q_off, dp_off, dq_off; struct page *srcs[2]; + unsigned int src_offs[2]; unsigned char coef[2]; enum async_tx_flags flags = submit->flags; dma_async_tx_callback cb_fn = submit->cb_fn; @@ -269,56 +307,74 @@ __2data_recov_n(int disks, size_t bytes, int faila, int failb, void *scribble = submit->scribble; p = blocks[disks-2]; + p_off = offs[disks-2]; q = blocks[disks-1]; + q_off = offs[disks-1]; /* Compute syndrome with zero for the missing data pages * Use the dead data pages as temporary storage for * delta p and delta q */ dp = blocks[faila]; + dp_off = offs[faila]; blocks[faila] = NULL; blocks[disks-2] = dp; + offs[disks-2] = dp_off; dq = blocks[failb]; + dq_off = offs[failb]; blocks[failb] = NULL; blocks[disks-1] = dq; + offs[disks-1] = dq_off; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_gen_syndrome(blocks, 0, disks, bytes, submit); + tx = async_gen_syndrome(blocks, offs, disks, bytes, submit); /* Restore pointer table */ blocks[faila] = dp; + offs[faila] = dp_off; blocks[failb] = dq; + offs[failb] = dq_off; blocks[disks-2] = p; + offs[disks-2] = p_off; blocks[disks-1] = q; + offs[disks-1] = q_off; /* compute P + Pxy */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = p; + src_offs[1] = p_off; init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL, scribble); - tx = async_xor(dp, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit); /* compute Q + Qxy */ srcs[0] = dq; + src_offs[0] = dq_off; srcs[1] = q; + src_offs[1] = q_off; init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL, scribble); - tx = async_xor(dq, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit); /* Dx = A*(P+Pxy) + B*(Q+Qxy) */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = dq; + src_offs[1] = dq_off; coef[0] = raid6_gfexi[failb-faila]; coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]]; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_sum_product(dq, srcs, coef, bytes, submit); + tx = async_sum_product(dq, dq_off, srcs, src_offs, coef, bytes, submit); /* Dy = P+Pxy+Dx */ srcs[0] = dp; + src_offs[0] = dp_off; srcs[1] = dq; + src_offs[1] = dq_off; init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn, cb_param, scribble); - tx = async_xor(dp, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit); return tx; } @@ -330,11 +386,13 @@ __2data_recov_n(int disks, size_t bytes, int faila, int failb, * @faila: first failed drive index * @failb: second failed drive index * @blocks: array of source pointers where the last two entries are p and q + * @offs: array of offset for pages in blocks * @submit: submission/completion modifiers */ struct dma_async_tx_descriptor * async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, - struct page **blocks, struct async_submit_ctl *submit) + struct page **blocks, unsigned int *offs, + struct async_submit_ctl *submit) { void *scribble = submit->scribble; int non_zero_srcs, i; @@ -358,7 +416,7 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, if (blocks[i] == NULL) ptrs[i] = (void *) raid6_empty_zero_page; else - ptrs[i] = page_address(blocks[i]); + ptrs[i] = page_address(blocks[i]) + offs[i]; raid6_2data_recov(disks, bytes, faila, failb, ptrs); @@ -383,16 +441,19 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, * explicitly handle the special case of a 4 disk array with * both data disks missing. */ - return __2data_recov_4(disks, bytes, faila, failb, blocks, submit); + return __2data_recov_4(disks, bytes, faila, failb, + blocks, offs, submit); case 3: /* dma devices do not uniformly understand a single * source pq operation (in contrast to the synchronous * case), so explicitly handle the special case of a 5 disk * array with 2 of 3 data disks missing. */ - return __2data_recov_5(disks, bytes, faila, failb, blocks, submit); + return __2data_recov_5(disks, bytes, faila, failb, + blocks, offs, submit); default: - return __2data_recov_n(disks, bytes, faila, failb, blocks, submit); + return __2data_recov_n(disks, bytes, faila, failb, + blocks, offs, submit); } } EXPORT_SYMBOL_GPL(async_raid6_2data_recov); @@ -403,14 +464,17 @@ EXPORT_SYMBOL_GPL(async_raid6_2data_recov); * @bytes: block size * @faila: failed drive index * @blocks: array of source pointers where the last two entries are p and q + * @offs: array of offset for pages in blocks * @submit: submission/completion modifiers */ struct dma_async_tx_descriptor * async_raid6_datap_recov(int disks, size_t bytes, int faila, - struct page **blocks, struct async_submit_ctl *submit) + struct page **blocks, unsigned int *offs, + struct async_submit_ctl *submit) { struct dma_async_tx_descriptor *tx = NULL; struct page *p, *q, *dq; + unsigned int p_off, q_off, dq_off; u8 coef; enum async_tx_flags flags = submit->flags; dma_async_tx_callback cb_fn = submit->cb_fn; @@ -418,6 +482,7 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila, void *scribble = submit->scribble; int good_srcs, good, i; struct page *srcs[2]; + unsigned int src_offs[2]; pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes); @@ -434,7 +499,7 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila, if (blocks[i] == NULL) ptrs[i] = (void*)raid6_empty_zero_page; else - ptrs[i] = page_address(blocks[i]); + ptrs[i] = page_address(blocks[i]) + offs[i]; raid6_datap_recov(disks, bytes, faila, ptrs); @@ -458,55 +523,67 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila, BUG_ON(good_srcs == 0); p = blocks[disks-2]; + p_off = offs[disks-2]; q = blocks[disks-1]; + q_off = offs[disks-1]; /* Compute syndrome with zero for the missing data page * Use the dead data page as temporary storage for delta q */ dq = blocks[faila]; + dq_off = offs[faila]; blocks[faila] = NULL; blocks[disks-1] = dq; + offs[disks-1] = dq_off; /* in the 4-disk case we only need to perform a single source * multiplication with the one good data block. */ if (good_srcs == 1) { struct page *g = blocks[good]; + unsigned int g_off = offs[good]; init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_memcpy(p, g, 0, 0, bytes, submit); + tx = async_memcpy(p, g, p_off, g_off, bytes, submit); init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit); + tx = async_mult(dq, dq_off, g, g_off, + raid6_gfexp[good], bytes, submit); } else { init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_gen_syndrome(blocks, 0, disks, bytes, submit); + tx = async_gen_syndrome(blocks, offs, disks, bytes, submit); } /* Restore pointer table */ blocks[faila] = dq; + offs[faila] = dq_off; blocks[disks-1] = q; + offs[disks-1] = q_off; /* calculate g^{-faila} */ coef = raid6_gfinv[raid6_gfexp[faila]]; srcs[0] = dq; + src_offs[0] = dq_off; srcs[1] = q; + src_offs[1] = q_off; init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL, scribble); - tx = async_xor(dq, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit); init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble); - tx = async_mult(dq, dq, coef, bytes, submit); + tx = async_mult(dq, dq_off, dq, dq_off, coef, bytes, submit); srcs[0] = p; + src_offs[0] = p_off; srcs[1] = dq; + src_offs[1] = dq_off; init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn, cb_param, scribble); - tx = async_xor(p, srcs, 0, 2, bytes, submit); + tx = async_xor_offs(p, p_off, srcs, src_offs, 2, bytes, submit); return tx; } diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c index 4e5eebe52e6a..a057ecb1288d 100644 --- a/crypto/async_tx/async_xor.c +++ b/crypto/async_tx/async_xor.c @@ -97,7 +97,8 @@ do_async_xor(struct dma_chan *chan, struct dmaengine_unmap_data *unmap, } static void -do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset, +do_sync_xor_offs(struct page *dest, unsigned int offset, + struct page **src_list, unsigned int *src_offs, int src_cnt, size_t len, struct async_submit_ctl *submit) { int i; @@ -114,7 +115,8 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset, /* convert to buffer pointers */ for (i = 0; i < src_cnt; i++) if (src_list[i]) - srcs[xor_src_cnt++] = page_address(src_list[i]) + offset; + srcs[xor_src_cnt++] = page_address(src_list[i]) + + (src_offs ? src_offs[i] : offset); src_cnt = xor_src_cnt; /* set destination address */ dest_buf = page_address(dest) + offset; @@ -135,11 +137,31 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset, async_tx_sync_epilog(submit); } +static inline bool +dma_xor_aligned_offsets(struct dma_device *device, unsigned int offset, + unsigned int *src_offs, int src_cnt, int len) +{ + int i; + + if (!is_dma_xor_aligned(device, offset, 0, len)) + return false; + + if (!src_offs) + return true; + + for (i = 0; i < src_cnt; i++) { + if (!is_dma_xor_aligned(device, src_offs[i], 0, len)) + return false; + } + return true; +} + /** - * async_xor - attempt to xor a set of blocks with a dma engine. + * async_xor_offs - attempt to xor a set of blocks with a dma engine. * @dest: destination page + * @offset: dst offset to start transaction * @src_list: array of source pages - * @offset: common src/dst offset to start transaction + * @src_offs: array of source pages offset, NULL means common src/dst offset * @src_cnt: number of source pages * @len: length in bytes * @submit: submission / completion modifiers @@ -157,8 +179,9 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset, * is not specified. */ struct dma_async_tx_descriptor * -async_xor(struct page *dest, struct page **src_list, unsigned int offset, - int src_cnt, size_t len, struct async_submit_ctl *submit) +async_xor_offs(struct page *dest, unsigned int offset, + struct page **src_list, unsigned int *src_offs, + int src_cnt, size_t len, struct async_submit_ctl *submit) { struct dma_chan *chan = async_tx_find_channel(submit, DMA_XOR, &dest, 1, src_list, @@ -171,7 +194,8 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset, if (device) unmap = dmaengine_get_unmap_data(device->dev, src_cnt+1, GFP_NOWAIT); - if (unmap && is_dma_xor_aligned(device, offset, 0, len)) { + if (unmap && dma_xor_aligned_offsets(device, offset, + src_offs, src_cnt, len)) { struct dma_async_tx_descriptor *tx; int i, j; @@ -184,7 +208,8 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset, continue; unmap->to_cnt++; unmap->addr[j++] = dma_map_page(device->dev, src_list[i], - offset, len, DMA_TO_DEVICE); + src_offs ? src_offs[i] : offset, + len, DMA_TO_DEVICE); } /* map it bidirectional as it may be re-used as a source */ @@ -213,11 +238,42 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset, /* wait for any prerequisite operations */ async_tx_quiesce(&submit->depend_tx); - do_sync_xor(dest, src_list, offset, src_cnt, len, submit); + do_sync_xor_offs(dest, offset, src_list, src_offs, + src_cnt, len, submit); return NULL; } } +EXPORT_SYMBOL_GPL(async_xor_offs); + +/** + * async_xor - attempt to xor a set of blocks with a dma engine. + * @dest: destination page + * @src_list: array of source pages + * @offset: common src/dst offset to start transaction + * @src_cnt: number of source pages + * @len: length in bytes + * @submit: submission / completion modifiers + * + * honored flags: ASYNC_TX_ACK, ASYNC_TX_XOR_ZERO_DST, ASYNC_TX_XOR_DROP_DST + * + * xor_blocks always uses the dest as a source so the + * ASYNC_TX_XOR_ZERO_DST flag must be set to not include dest data in + * the calculation. The assumption with dma eninges is that they only + * use the destination buffer as a source when it is explicity specified + * in the source list. + * + * src_list note: if the dest is also a source it must be at index zero. + * The contents of this array will be overwritten if a scribble region + * is not specified. + */ +struct dma_async_tx_descriptor * +async_xor(struct page *dest, struct page **src_list, unsigned int offset, + int src_cnt, size_t len, struct async_submit_ctl *submit) +{ + return async_xor_offs(dest, offset, src_list, NULL, + src_cnt, len, submit); +} EXPORT_SYMBOL_GPL(async_xor); static int page_is_zero(struct page *p, unsigned int offset, size_t len) @@ -237,10 +293,11 @@ xor_val_chan(struct async_submit_ctl *submit, struct page *dest, } /** - * async_xor_val - attempt a xor parity check with a dma engine. + * async_xor_val_offs - attempt a xor parity check with a dma engine. * @dest: destination page used if the xor is performed synchronously + * @offset: des offset in pages to start transaction * @src_list: array of source pages - * @offset: offset in pages to start transaction + * @src_offs: array of source pages offset, NULL means common src/det offset * @src_cnt: number of source pages * @len: length in bytes * @result: 0 if sum == 0 else non-zero @@ -253,9 +310,10 @@ xor_val_chan(struct async_submit_ctl *submit, struct page *dest, * is not specified. */ struct dma_async_tx_descriptor * -async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, - int src_cnt, size_t len, enum sum_check_flags *result, - struct async_submit_ctl *submit) +async_xor_val_offs(struct page *dest, unsigned int offset, + struct page **src_list, unsigned int *src_offs, + int src_cnt, size_t len, enum sum_check_flags *result, + struct async_submit_ctl *submit) { struct dma_chan *chan = xor_val_chan(submit, dest, src_list, src_cnt, len); struct dma_device *device = chan ? chan->device : NULL; @@ -268,7 +326,7 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, unmap = dmaengine_get_unmap_data(device->dev, src_cnt, GFP_NOWAIT); if (unmap && src_cnt <= device->max_xor && - is_dma_xor_aligned(device, offset, 0, len)) { + dma_xor_aligned_offsets(device, offset, src_offs, src_cnt, len)) { unsigned long dma_prep_flags = 0; int i; @@ -281,7 +339,8 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, for (i = 0; i < src_cnt; i++) { unmap->addr[i] = dma_map_page(device->dev, src_list[i], - offset, len, DMA_TO_DEVICE); + src_offs ? src_offs[i] : offset, + len, DMA_TO_DEVICE); unmap->to_cnt++; } unmap->len = len; @@ -312,7 +371,8 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, submit->flags |= ASYNC_TX_XOR_DROP_DST; submit->flags &= ~ASYNC_TX_ACK; - tx = async_xor(dest, src_list, offset, src_cnt, len, submit); + tx = async_xor_offs(dest, offset, src_list, src_offs, + src_cnt, len, submit); async_tx_quiesce(&tx); @@ -325,6 +385,32 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, return tx; } +EXPORT_SYMBOL_GPL(async_xor_val_offs); + +/** + * async_xor_val - attempt a xor parity check with a dma engine. + * @dest: destination page used if the xor is performed synchronously + * @src_list: array of source pages + * @offset: offset in pages to start transaction + * @src_cnt: number of source pages + * @len: length in bytes + * @result: 0 if sum == 0 else non-zero + * @submit: submission / completion modifiers + * + * honored flags: ASYNC_TX_ACK + * + * src_list note: if the dest is also a source it must be at index zero. + * The contents of this array will be overwritten if a scribble region + * is not specified. + */ +struct dma_async_tx_descriptor * +async_xor_val(struct page *dest, struct page **src_list, unsigned int offset, + int src_cnt, size_t len, enum sum_check_flags *result, + struct async_submit_ctl *submit) +{ + return async_xor_val_offs(dest, offset, src_list, NULL, src_cnt, + len, result, submit); +} EXPORT_SYMBOL_GPL(async_xor_val); MODULE_AUTHOR("Intel Corporation"); diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c index 14e73dcd7475..66db82e5a3b1 100644 --- a/crypto/async_tx/raid6test.c +++ b/crypto/async_tx/raid6test.c @@ -18,6 +18,7 @@ #define NDISKS 64 /* Including P and Q */ static struct page *dataptrs[NDISKS]; +unsigned int dataoffs[NDISKS]; static addr_conv_t addr_conv[NDISKS]; static struct page *data[NDISKS+3]; static struct page *spare; @@ -38,6 +39,7 @@ static void makedata(int disks) for (i = 0; i < disks; i++) { prandom_bytes(page_address(data[i]), PAGE_SIZE); dataptrs[i] = data[i]; + dataoffs[i] = 0; } } @@ -52,7 +54,8 @@ static char disk_type(int d, int disks) } /* Recover two failed blocks. */ -static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, struct page **ptrs) +static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, + struct page **ptrs, unsigned int *offs) { struct async_submit_ctl submit; struct completion cmp; @@ -66,7 +69,8 @@ static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, stru if (faila == disks-2) { /* P+Q failure. Just rebuild the syndrome. */ init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv); - tx = async_gen_syndrome(ptrs, 0, disks, bytes, &submit); + tx = async_gen_syndrome(ptrs, offs, + disks, bytes, &submit); } else { struct page *blocks[NDISKS]; struct page *dest; @@ -89,22 +93,26 @@ static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, stru tx = async_xor(dest, blocks, 0, count, bytes, &submit); init_async_submit(&submit, 0, tx, NULL, NULL, addr_conv); - tx = async_gen_syndrome(ptrs, 0, disks, bytes, &submit); + tx = async_gen_syndrome(ptrs, offs, + disks, bytes, &submit); } } else { if (failb == disks-2) { /* data+P failure. */ init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv); - tx = async_raid6_datap_recov(disks, bytes, faila, ptrs, &submit); + tx = async_raid6_datap_recov(disks, bytes, + faila, ptrs, offs, &submit); } else { /* data+data failure. */ init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv); - tx = async_raid6_2data_recov(disks, bytes, faila, failb, ptrs, &submit); + tx = async_raid6_2data_recov(disks, bytes, + faila, failb, ptrs, offs, &submit); } } init_completion(&cmp); init_async_submit(&submit, ASYNC_TX_ACK, tx, callback, &cmp, addr_conv); - tx = async_syndrome_val(ptrs, 0, disks, bytes, &result, spare, &submit); + tx = async_syndrome_val(ptrs, offs, + disks, bytes, &result, spare, 0, &submit); async_tx_issue_pending(tx); if (wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000)) == 0) @@ -126,7 +134,7 @@ static int test_disks(int i, int j, int disks) dataptrs[i] = recovi; dataptrs[j] = recovj; - raid6_dual_recov(disks, PAGE_SIZE, i, j, dataptrs); + raid6_dual_recov(disks, PAGE_SIZE, i, j, dataptrs, dataoffs); erra = memcmp(page_address(data[i]), page_address(recovi), PAGE_SIZE); errb = memcmp(page_address(data[j]), page_address(recovj), PAGE_SIZE); @@ -162,7 +170,7 @@ static int test(int disks, int *tests) /* Generate assumed good syndrome */ init_completion(&cmp); init_async_submit(&submit, ASYNC_TX_ACK, NULL, callback, &cmp, addr_conv); - tx = async_gen_syndrome(dataptrs, 0, disks, PAGE_SIZE, &submit); + tx = async_gen_syndrome(dataptrs, dataoffs, disks, PAGE_SIZE, &submit); async_tx_issue_pending(tx); if (wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000)) == 0) { |