From 044a9df1a7cbb89f48fcc0e9e39997989342966b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 11 Sep 2017 12:09:28 -0400 Subject: 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 Reviewed-by: Keith Busch --- include/linux/nvme.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 5144f9103723..87723c86f136 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -226,7 +226,9 @@ struct nvme_id_ctrl { __le16 mntmt; __le16 mxtmt; __le32 sanicap; - __u8 rsvd332[180]; + __le32 hmminds; + __le16 hmmaxd; + __u8 rsvd338[174]; __u8 sqes; __u8 cqes; __le16 maxcmd; -- cgit