diff options
| author | Alok Pandey <pandey.alok@samsung.com> | 2015-08-26 14:56:14 (GMT) |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-26 14:58:09 (GMT) |
| commit | e19b127f5b76ec03b9c52b64f117dc75bb39eda1 (patch) | |
| tree | ffd56fc81dbcec7859d49bb3e3921dc098567535 /drivers | |
| parent | e3f879bf1ea3e03f433d292b0114807785f0754b (diff) | |
| download | linux-e19b127f5b76ec03b9c52b64f117dc75bb39eda1.tar.xz | |
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: Alok Pandey <pandey.alok@samsung.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/nvme-core.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index caad00f..8de3de0 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -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)); |