linux-kernel - [PATCH v2] NVMe: Update namespace and controller identity structures as per 1.1a spec

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Message-Id: <1399492530-7774-1-git-send-email-dimitri.ledkov@canonical.com>
Date:	Wed,  7 May 2014 20:55:30 +0100
From:	Dimitri John Ledkov <dimitri.ledkov@...onical.com>
To:	Matthew Wilcox <willy@...ux.intel.com>
Cc:	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Dimitri John Ledkov <dimitri.ledkov@...onical.com>
Subject: [PATCH v2] NVMe: Update namespace and controller identity structures as per 1.1a spec

Controller: add CNTLID, AVSCC, APSTA, NVSCC, ACWU, SGLS fields.

Namespace: add NMIC, RESCAP, EUI64 fields. EUI64 is specifically
interesting, since it can be used to construct an UEFI NVMe device
path for a boot entry.

As per NVM Express 1.1a spec:
http://www.nvmexpress.org/wp-content/uploads/NVM-Express-1_1a.pdf

Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@...onical.com>
---

 Changes since v1:
  - Change cntlid from __le16 to __u16 ("it's a cookie")
  - Change eui64 from __le64 to __u8[8] (as per IEEE's recommendation)

 include/uapi/linux/nvme.h | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/uapi/linux/nvme.h b/include/uapi/linux/nvme.h
index f090336..e74da78 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -45,7 +45,8 @@ struct nvme_id_ctrl {
 	__u8			ieee[3];
 	__u8			mic;
 	__u8			mdts;
-	__u8			rsvd78[178];
+	__u16			cntlid;
+	__u8			rsvd80[176];
 	__le16			oacs;
 	__u8			acl;
 	__u8			aerl;
@@ -53,7 +54,9 @@ struct nvme_id_ctrl {
 	__u8			lpa;
 	__u8			elpe;
 	__u8			npss;
-	__u8			rsvd264[248];
+	__u8			avscc;
+	__u8			apsta;
+	__u8			rsvd266[246];
 	__u8			sqes;
 	__u8			cqes;
 	__u8			rsvd514[2];
@@ -64,7 +67,12 @@ struct nvme_id_ctrl {
 	__u8			vwc;
 	__le16			awun;
 	__le16			awupf;
-	__u8			rsvd530[1518];
+	__u8			nvscc;
+	__u8			rsvd531;
+	__le16			acwu;
+	__u8			rsvd534[2];
+	__le32			sgls;
+	__u8			rsvd540[1508];
 	struct nvme_id_power_state	psd[32];
 	__u8			vs[1024];
 };
@@ -92,7 +100,10 @@ struct nvme_id_ns {
 	__u8			mc;
 	__u8			dpc;
 	__u8			dps;
-	__u8			rsvd30[98];
+	__u8			nmic;
+	__u8			rescap;
+	__u8			rsvd32[88];
+	__u8			eui64[8];
 	struct nvme_lbaf	lbaf[16];
 	__u8			rsvd192[192];
 	__u8			vs[3712];
-- 
2.0.0.rc0

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