提交 e19b127f 编写于 作者: A Alok Pandey 提交者: Jens Axboe

NVMe: Using PRACT bit to generate and verify PI by controller

This patch enables the PRCHK and reftag support when PRACT bit is set, and
block layer integrity is disabled.
Signed-off-by: NAlok Pandey <pandey.alok@samsung.com>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NJens Axboe <axboe@fb.com>
上级 e3f879bf
......@@ -813,8 +813,7 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod,
cmnd.rw.slba = cpu_to_le64(nvme_block_nr(ns, blk_rq_pos(req)));
cmnd.rw.length = cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1);
if (blk_integrity_rq(req)) {
cmnd.rw.metadata = cpu_to_le64(sg_dma_address(iod->meta_sg));
if (ns->ms) {
switch (ns->pi_type) {
case NVME_NS_DPS_PI_TYPE3:
control |= NVME_RW_PRINFO_PRCHK_GUARD;
......@@ -827,8 +826,12 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod,
nvme_block_nr(ns, blk_rq_pos(req)));
break;
}
} else if (ns->ms)
control |= NVME_RW_PRINFO_PRACT;
if (blk_integrity_rq(req))
cmnd.rw.metadata =
cpu_to_le64(sg_dma_address(iod->meta_sg));
else
control |= NVME_RW_PRINFO_PRACT;
}
cmnd.rw.control = cpu_to_le16(control);
cmnd.rw.dsmgmt = cpu_to_le32(dsmgmt);
......@@ -2037,7 +2040,7 @@ static int nvme_revalidate_disk(struct gendisk *disk)
!ns->ext)
nvme_init_integrity(ns);
if (ns->ms && !blk_get_integrity(disk))
if (ns->ms && !(ns->ms == 8 && ns->pi_type) && !blk_get_integrity(disk))
set_capacity(disk, 0);
else
set_capacity(disk, le64_to_cpup(&id->nsze) << (ns->lba_shift - 9));
......
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