* [PATCH] NVMe: Update namespace and controller identity structures as per 1.1a spec
@ 2014-04-19 21:19 Dimitri John Ledkov
2014-04-23 15:13 ` Matthew Wilcox
0 siblings, 1 reply; 4+ messages in thread
From: Dimitri John Ledkov @ 2014-04-19 21:19 UTC (permalink / raw)
To: linux-nvme; +Cc: keith.busch, willy, linux-kernel
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@canonical.com>
---
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 096fe1c..73cb2af 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -49,7 +49,8 @@ struct nvme_id_ctrl {
__u8 ieee[3];
__u8 mic;
__u8 mdts;
- __u8 rsvd78[178];
+ __le16 cntlid;
+ __u8 rsvd80[176];
__le16 oacs;
__u8 acl;
__u8 aerl;
@@ -57,7 +58,9 @@ 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];
@@ -68,7 +71,12 @@ 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];
};
@@ -95,7 +103,10 @@ struct nvme_id_ns {
__u8 mc;
__u8 dpc;
__u8 dps;
- __u8 rsvd30[98];
+ __u8 nmic;
+ __u8 rescap;
+ __u8 rsvd32[88];
+ __le64 eui64;
struct nvme_lbaf lbaf[16];
__u8 rsvd192[192];
__u8 vs[3712];
--
1.9.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] NVMe: Update namespace and controller identity structures as per 1.1a spec
2014-04-19 21:19 [PATCH] NVMe: Update namespace and controller identity structures as per 1.1a spec Dimitri John Ledkov
@ 2014-04-23 15:13 ` Matthew Wilcox
2014-05-07 19:55 ` [PATCH v2] " Dimitri John Ledkov
0 siblings, 1 reply; 4+ messages in thread
From: Matthew Wilcox @ 2014-04-23 15:13 UTC (permalink / raw)
To: Dimitri John Ledkov; +Cc: linux-nvme, keith.busch, linux-kernel
On Sat, Apr 19, 2014 at 10:19:57PM +0100, Dimitri John Ledkov wrote:
> 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
Thanks for the patch!
> - __u8 rsvd78[178];
> + __le16 cntlid;
> + __u8 rsvd80[176];
I don't think cntlid is a little-endian value. I think it's a cookie,
so this should be __u16.
> - __u8 rsvd30[98];
> + __u8 nmic;
> + __u8 rescap;
> + __u8 rsvd32[88];
> + __le64 eui64;
eui64 isn't treated as a 64-bit value elsewhere in the kernel, rather as
an array of bytes. So I think this one should be:
__u8 eui64[8];
That matches the IEEE's recommendations:
An EUI-64 is a string of eight octets, labeled as eui[0] through eui[7].
(see http://standards.ieee.org/develop/regauth/tut/eui64.pdf)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2] NVMe: Update namespace and controller identity structures as per 1.1a spec
2014-04-23 15:13 ` Matthew Wilcox
@ 2014-05-07 19:55 ` Dimitri John Ledkov
0 siblings, 0 replies; 4+ messages in thread
From: Dimitri John Ledkov @ 2014-05-07 19:55 UTC (permalink / raw)
To: Matthew Wilcox; +Cc: linux-nvme, linux-kernel, Dimitri John Ledkov
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@canonical.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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] NVMe: Update namespace and controller identity structures as per 1.1a spec
@ 2014-04-19 21:19 Dimitri John Ledkov
0 siblings, 0 replies; 4+ messages in thread
From: Dimitri John Ledkov @ 2014-04-19 21:19 UTC (permalink / raw)
Cc: keith.busch, willy, linux-kernel
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@canonical.com>
---
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 096fe1c..73cb2af 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -49,7 +49,8 @@ struct nvme_id_ctrl {
__u8 ieee[3];
__u8 mic;
__u8 mdts;
- __u8 rsvd78[178];
+ __le16 cntlid;
+ __u8 rsvd80[176];
__le16 oacs;
__u8 acl;
__u8 aerl;
@@ -57,7 +58,9 @@ 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];
@@ -68,7 +71,12 @@ 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];
};
@@ -95,7 +103,10 @@ struct nvme_id_ns {
__u8 mc;
__u8 dpc;
__u8 dps;
- __u8 rsvd30[98];
+ __u8 nmic;
+ __u8 rescap;
+ __u8 rsvd32[88];
+ __le64 eui64;
struct nvme_lbaf lbaf[16];
__u8 rsvd192[192];
__u8 vs[3712];
--
1.9.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
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2014-04-19 21:19 [PATCH] NVMe: Update namespace and controller identity structures as per 1.1a spec Dimitri John Ledkov
2014-04-23 15:13 ` Matthew Wilcox
2014-05-07 19:55 ` [PATCH v2] " Dimitri John Ledkov
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