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hw/nvme: Change alignment in dma functions for nvme_blk_*

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Since the nvme_blk_read/write are used by both the data and metadata
portions of the IO, it can't have the 512B alignment requirement.
Without this change any metadata transfer, which length isn't a multiple
of 512B and which is bigger than 512B, will result in only a partial
transfer.

Signed-off-by: Mateusz Kozlowski <kozlowski.mateuszpl@gmail.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Mateusz Kozlowski 2023-03-20 13:40:36 +01:00 committed by Klaus Jensen
parent e3debd5e7d
commit 9b4f01812f
1 changed files with 10 additions and 10 deletions
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20
hw/nvme/ctrl.c
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@ -1434,26 +1434,26 @@ uint16_t nvme_bounce_mdata(NvmeCtrl *n, void *ptr, uint32_t len,
}
static inline void nvme_blk_read(BlockBackend *blk, int64_t offset,
BlockCompletionFunc *cb, NvmeRequest *req)
uint32_t align, BlockCompletionFunc *cb,
NvmeRequest *req)
{
assert(req->sg.flags & NVME_SG_ALLOC);
if (req->sg.flags & NVME_SG_DMA) {
req->aiocb = dma_blk_read(blk, &req->sg.qsg, offset, BDRV_SECTOR_SIZE,
cb, req);
req->aiocb = dma_blk_read(blk, &req->sg.qsg, offset, align, cb, req);
} else {
req->aiocb = blk_aio_preadv(blk, offset, &req->sg.iov, 0, cb, req);
}
}
static inline void nvme_blk_write(BlockBackend *blk, int64_t offset,
BlockCompletionFunc *cb, NvmeRequest *req)
uint32_t align, BlockCompletionFunc *cb,
NvmeRequest *req)
{
assert(req->sg.flags & NVME_SG_ALLOC);
if (req->sg.flags & NVME_SG_DMA) {
req->aiocb = dma_blk_write(blk, &req->sg.qsg, offset, BDRV_SECTOR_SIZE,
cb, req);
req->aiocb = dma_blk_write(blk, &req->sg.qsg, offset, align, cb, req);
} else {
req->aiocb = blk_aio_pwritev(blk, offset, &req->sg.iov, 0, cb, req);
}
@ -2207,10 +2207,10 @@ static void nvme_rw_cb(void *opaque, int ret)
}
if (req->cmd.opcode == NVME_CMD_READ) {
return nvme_blk_read(blk, offset, nvme_rw_complete_cb, req);
return nvme_blk_read(blk, offset, 1, nvme_rw_complete_cb, req);
}
return nvme_blk_write(blk, offset, nvme_rw_complete_cb, req);
return nvme_blk_write(blk, offset, 1, nvme_rw_complete_cb, req);
}
}
@ -3437,7 +3437,7 @@ static uint16_t nvme_read(NvmeCtrl *n, NvmeRequest *req)
block_acct_start(blk_get_stats(blk), &req->acct, data_size,
BLOCK_ACCT_READ);
nvme_blk_read(blk, data_offset, nvme_rw_cb, req);
nvme_blk_read(blk, data_offset, BDRV_SECTOR_SIZE, nvme_rw_cb, req);
return NVME_NO_COMPLETE;
invalid:
@ -3607,7 +3607,7 @@ static uint16_t nvme_do_write(NvmeCtrl *n, NvmeRequest *req, bool append,
block_acct_start(blk_get_stats(blk), &req->acct, data_size,
BLOCK_ACCT_WRITE);
nvme_blk_write(blk, data_offset, nvme_rw_cb, req);
nvme_blk_write(blk, data_offset, BDRV_SECTOR_SIZE, nvme_rw_cb, req);
} else {
req->aiocb = blk_aio_pwrite_zeroes(blk, data_offset, data_size,
BDRV_REQ_MAY_UNMAP, nvme_rw_cb,