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nvme: Fix error in nvme_setup_prps

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Consulting to "NVM Express® Base Specification, revision 2.0".

If more PRP List pages are required, then the last entry of
the PRP List contains the Page Base Address of the next PRP
List page. The next PRP List page shall be memory page aligned.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
This commit is contained in:
Jon Lin 2021-10-19 10:40:54 +08:00 committed by Tom Rini
parent b6bfb8971d
commit c4eef59faa
1 changed files with 5 additions and 4 deletions
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9
drivers/nvme/nvme.c
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@ -100,7 +100,7 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2,
}
nprps = DIV_ROUND_UP(length, page_size);
num_pages = DIV_ROUND_UP(nprps, prps_per_page);
num_pages = DIV_ROUND_UP(nprps + 1, prps_per_page);
if (nprps > dev->prp_entry_num) {
free(dev->prp_pool);
@ -119,10 +119,11 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2,
prp_pool = dev->prp_pool;
i = 0;
while (nprps) {
if (i == ((page_size >> 3) - 1)) {
*(prp_pool + i) = cpu_to_le64((ulong)prp_pool +
if (i == prps_per_page) {
*(prp_pool + i) = *(prp_pool + i - 1);
*(prp_pool + i - 1) = cpu_to_le64((ulong)prp_pool +
page_size);
i = 0;
i = 1;
prp_pool += page_size;
}
*(prp_pool + i++) = cpu_to_le64(dma_addr);