diff options
Diffstat (limited to 'drivers/block/nvme.c')
| -rw-r--r-- | drivers/block/nvme.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 7bcd88205a41..11951fa11a90 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -78,6 +78,7 @@ struct nvme_dev { char serial[20]; char model[40]; char firmware_rev[8]; + u32 max_hw_sectors; }; /* @@ -1344,6 +1345,8 @@ static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, int nsid, lbaf = id->flbas & 0xf; ns->lba_shift = id->lbaf[lbaf].ds; blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift); + if (dev->max_hw_sectors) + blk_queue_max_hw_sectors(ns->queue, dev->max_hw_sectors); disk->major = nvme_major; disk->minors = NVME_MINORS; @@ -1485,6 +1488,10 @@ static int __devinit nvme_dev_add(struct nvme_dev *dev) memcpy(dev->serial, ctrl->sn, sizeof(ctrl->sn)); memcpy(dev->model, ctrl->mn, sizeof(ctrl->mn)); memcpy(dev->firmware_rev, ctrl->fr, sizeof(ctrl->fr)); + if (ctrl->mdts) { + int shift = NVME_CAP_MPSMIN(readq(&dev->bar->cap)) + 12; + dev->max_hw_sectors = 1 << (ctrl->mdts + shift - 9); + } id_ns = mem; for (i = 1; i <= nn; i++) { |