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| author | Max Gurtovoy <maxg@mellanox.com> | 2020-05-19 17:05:52 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-05-27 07:12:39 +0200 |
| commit | 95093350394a394e7c4e778176194b14b76ec5d8 (patch) | |
| tree | d4072939afa81fcab8d4a07435bdc0905cd2af8c /drivers/nvme | |
| parent | 4d2ce68835649afebbc5e8816b79426fb04c639f (diff) | |
| download | linux-stable-95093350394a394e7c4e778176194b14b76ec5d8.tar.gz linux-stable-95093350394a394e7c4e778176194b14b76ec5d8.tar.bz2 linux-stable-95093350394a394e7c4e778176194b14b76ec5d8.zip | |
nvme: introduce max_integrity_segments ctrl attribute
This patch doesn't change any logic, and is needed as a preparation
for adding PI support for fabrics drivers that will use an extended
LBA format for metadata and will support more than 1 integrity segment.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 11 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 | ||||
| -rw-r--r-- | drivers/nvme/host/pci.c | 6 |
3 files changed, 14 insertions, 4 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index beea013f7b73..404edceb84cb 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1693,7 +1693,8 @@ static int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo) } #ifdef CONFIG_BLK_DEV_INTEGRITY -static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type) +static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type, + u32 max_integrity_segments) { struct blk_integrity integrity; @@ -1716,10 +1717,11 @@ static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type) } integrity.tuple_size = ms; blk_integrity_register(disk, &integrity); - blk_queue_max_integrity_segments(disk->queue, 1); + blk_queue_max_integrity_segments(disk->queue, max_integrity_segments); } #else -static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type) +static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type, + u32 max_integrity_segments) { } #endif /* CONFIG_BLK_DEV_INTEGRITY */ @@ -1895,7 +1897,8 @@ static void nvme_update_disk_info(struct gendisk *disk, if (ns->ms) { if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY) && (ns->features & NVME_NS_METADATA_SUPPORTED)) - nvme_init_integrity(disk, ns->ms, ns->pi_type); + nvme_init_integrity(disk, ns->ms, ns->pi_type, + ns->ctrl->max_integrity_segments); else if (!nvme_ns_has_pi(ns)) capacity = 0; } diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index c83ff69338d8..5b5ed128fd9e 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -229,6 +229,7 @@ struct nvme_ctrl { u32 page_size; u32 max_hw_sectors; u32 max_segments; + u32 max_integrity_segments; u16 crdt[3]; u16 oncs; u16 oacs; diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 6cc4630ddd6d..b307c06a783d 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2565,6 +2565,12 @@ static void nvme_reset_work(struct work_struct *work) goto out; } + /* + * We do not support an SGL for metadata (yet), so we are limited to a + * single integrity segment for the separate metadata pointer. + */ + dev->ctrl.max_integrity_segments = 1; + result = nvme_init_identify(&dev->ctrl); if (result) goto out; |