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| author | Christoph Hellwig <hch@lst.de> | 2017-09-11 19:09:28 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-09-11 19:29:40 +0300 |
| commit | 044a9df1a7cbb89f48fcc0e9e39997989342966b (patch) | |
| tree | 0bb6cdf7a6d92428d4198597d12950121caf72d7 /drivers/nvme/host/core.c | |
| parent | 9620cfba97a8b88ae91f0e275e8ff110b578bb6e (diff) | |
| download | linux-044a9df1a7cbb89f48fcc0e9e39997989342966b.tar.xz | |
nvme-pci: implement the HMB entry number and size limitations
Adds support for the new Host Memory Buffer Minimum Descriptor Entry Size
and Host Memory Maximum Descriptors Entries field that were added in
TP 4002 HMB Enhancements. These allow the controller to advertise
limits for the usual number of segments in the host memory buffer, as
well as a minimum usable per-segment size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/nvme/host/core.c')
| -rw-r--r-- | drivers/nvme/host/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 8040fc14fd15..acc816b67582 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1897,6 +1897,8 @@ int nvme_init_identify(struct nvme_ctrl *ctrl) ctrl->cntlid = le16_to_cpu(id->cntlid); ctrl->hmpre = le32_to_cpu(id->hmpre); ctrl->hmmin = le32_to_cpu(id->hmmin); + ctrl->hmminds = le32_to_cpu(id->hmminds); + ctrl->hmmaxd = le16_to_cpu(id->hmmaxd); } kfree(id); |