types: add performance attribute structures

These for the performance characteristics feature: 1Ch.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

src/nvme/types.h

@@ -21,6 +21,9 @@
  * NVMe standard definitions
  */
 
+#define NVME_UUID_LEN 16
+#define NVME_UUID_LEN_STRING 37 /* 1b4e28ba-2fa1-11d2-883f-0016d3cca427 + \0 */
+
 /**
  * NVME_GET() - extract field from complex value
  * @value: The original value of a complex field
@@ -6005,6 +6008,75 @@ enum nvme_apst_entry {
 	NVME_APST_ENTRY_ITPT_MASK = 0xffffff,
 };
 
+/**
+ * struct nvme_std_perf_attr - Standard performance attribute structure
+ * @rsvd0:	Reserved
+ * @r4karl:	Random 4 KiB average read latency
+ * @rsvd5:	Reserved
+ */
+struct nvme_std_perf_attr {
+	__u8 rsvd0[4];
+	__u8 r4karl;
+	__u8 rsvd5[4091];
+};
+
+/**
+ * struct nvme_perf_attr_id - Performance attribute identifier structure
+ * @id:	Performance attribute identifier
+ */
+struct nvme_perf_attr_id {
+	__u8 id[NVME_UUID_LEN];
+};
+
+/**
+ * struct nvme_perf_attr_id_list - Performance attribute identifier list structure
+ * @attrtyp:	Bits 7-3: Reserved
+ *		Bits 2-0: Attribute type
+ * @msvspa:	Maximum saveable vendor specific performance attributes
+ * @usvspa:	Unused saveable vendor specific performance attributes
+ * @rsvd3:	Reserved
+ * @id_list:	Performance attribute identifier list
+ * @rsvd1024:	Reserved
+ */
+struct nvme_perf_attr_id_list {
+	__u8 attrtyp;
+	__u8 msvspa;
+	__u8 usvspa;
+	__u8 rsvd3[13];
+	struct nvme_perf_attr_id id_list[63];
+	__u8 rsvd1024[3072];
+};
+
+/**
+ * struct nvme_vs_perf_attr - Vendor specific performance attribute structure
+ * @paid:	Performance attribute identifier
+ * @rsvd16:	Reserved
+ * @attrl:	Attribute Length
+ * @vs:		Vendor specific
+ */
+struct nvme_vs_perf_attr {
+	__u8 paid[16];
+	__u8 rsvd16[14];
+	__le16 attrl;
+	__u8 vs[4064];
+};
+
+/**
+ * struct nvme_perf_characteristics - Performance attribute structure
+ * @std_perf:	Standard performance attribute
+ * @id_list:	Performance attribute identifier list
+ * @vs_perf:	Vendor specific performance attribute
+ * @attr_buf:	Attribute buffer
+ */
+struct nvme_perf_characteristics {
+	union {
+		struct nvme_std_perf_attr std_perf[0];
+		struct nvme_perf_attr_id_list id_list[0];
+		struct nvme_vs_perf_attr vs_perf[0];
+		__u8 attr_buf[4096];
+	};
+};
+
 /**
  * struct nvme_metadata_element_desc - Metadata Element Descriptor
  * @type:	Element Type (ET)

src/nvme/util.h

@@ -646,9 +646,6 @@ enum nvme_version {
  */
 const char *nvme_get_version(enum nvme_version type);
 
-#define NVME_UUID_LEN_STRING	37  /* 1b4e28ba-2fa1-11d2-883f-0016d3cca427 + \0 */
-#define NVME_UUID_LEN		16
-
 /**
  * nvme_uuid_to_string - Return string represenation of encoded UUID
  * @uuid:	Binary encoded input UUID