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);
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,
srcs[1] = q;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(b, srcs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
dp = blocks[faila];
dq = blocks[failb];
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_memcpy(dp, g, 0, 0, bytes, submit);
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit);
/* compute P + Pxy */
srcs[0] = dp;
srcs[1] = p;
- init_async_submit(submit, ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL,
- scribble);
+ 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);
/* compute Q + Qxy */
srcs[0] = dq;
srcs[1] = q;
- init_async_submit(submit, ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL,
- scribble);
+ 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);
/* Dx = A*(P+Pxy) + B*(Q+Qxy) */
srcs[1] = dq;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(dq, srcs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
blocks[failb] = (void *)raid6_empty_zero_page;
blocks[disks-1] = dq;
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_gen_syndrome(blocks, 0, disks, bytes, submit);
/* Restore pointer table */
/* compute P + Pxy */
srcs[0] = dp;
srcs[1] = p;
- init_async_submit(submit, ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL,
- scribble);
+ 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);
/* compute Q + Qxy */
srcs[0] = dq;
srcs[1] = q;
- init_async_submit(submit, ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL,
- scribble);
+ 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);
/* Dx = A*(P+Pxy) + B*(Q+Qxy) */
srcs[1] = dq;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(dq, srcs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
int good = faila == 0 ? 1 : 0;
struct page *g = blocks[good];
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
+ scribble);
tx = async_memcpy(p, g, 0, 0, bytes, submit);
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
+ scribble);
tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit);
} else {
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
+ scribble);
tx = async_gen_syndrome(blocks, 0, disks, bytes, submit);
}
srcs[0] = dq;
srcs[1] = q;
- init_async_submit(submit, ASYNC_TX_XOR_DROP_DST, tx, NULL, NULL,
- scribble);
+ 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);
- init_async_submit(submit, 0, tx, NULL, NULL, scribble);
+ init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_mult(dq, dq, coef, bytes, submit);
srcs[0] = p;