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nvmereg.h revision 1.5
      1 /*	$NetBSD: nvmereg.h,v 1.5 2016/09/17 23:59:30 jdolecek Exp $	*/
      2 /*	$OpenBSD: nvmereg.h,v 1.10 2016/04/14 11:18:32 dlg Exp $ */
      3 
      4 /*
      5  * Copyright (c) 2014 David Gwynne <dlg (at) openbsd.org>
      6  *
      7  * Permission to use, copy, modify, and distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #ifndef	__NVMEREG_H__
     21 #define	__NVMEREG_H__
     22 
     23 #define NVME_CAP	0x0000	/* Controller Capabilities */
     24 #define  NVME_CAP_MPSMAX(_r)	(12 + (((_r) >> 52) & 0xf)) /* shift */
     25 #define  NVME_CAP_MPSMIN(_r)	(12 + (((_r) >> 48) & 0xf)) /* shift */
     26 #define  NVME_CAP_CSS(_r)	(((_r) >> 37) & 0x7f)
     27 #define  NVME_CAP_CSS_NVM	__BIT(0)
     28 #define  NVME_CAP_NSSRS(_r)	ISSET((_r), __BIT(36))
     29 #define  NVME_CAP_DSTRD(_r)	__BIT(2 + (((_r) >> 32) & 0xf)) /* bytes */
     30 #define  NVME_CAP_TO(_r)	(500 * (((_r) >> 24) & 0xff)) /* ms */
     31 #define  NVME_CAP_AMS(_r)	(((_r) >> 17) & 0x3)
     32 #define  NVME_CAP_AMS_WRR	__BIT(0)
     33 #define  NVME_CAP_AMS_VENDOR	__BIT(1)
     34 #define  NVME_CAP_CQR(_r)	ISSET((_r), __BIT(16))
     35 #define  NVME_CAP_MQES(_r)	(((_r) & 0xffff) + 1)
     36 #define NVME_CAP_LO	0x0000
     37 #define NVME_CAP_HI	0x0004
     38 #define NVME_VS		0x0008	/* Version */
     39 #define  NVME_VS_MJR(_r)	(((_r) >> 16) & 0xffff)
     40 #define  NVME_VS_MNR(_r)	((_r) & 0xffff)
     41 #define  NVME_VS_1_0		0x00010000
     42 #define  NVME_VS_1_1		0x00010100
     43 #define  NVME_VS_1_2		0x00010200
     44 #define NVME_INTMS	0x000c	/* Interrupt Mask Set */
     45 #define NVME_INTMC	0x0010	/* Interrupt Mask Clear */
     46 #define NVME_CC		0x0014	/* Controller Configuration */
     47 #define  NVME_CC_IOCQES(_v)	(((_v) & 0xf) << 20)
     48 #define  NVME_CC_IOCQES_MASK	NVME_CC_IOCQES(0xf)
     49 #define  NVME_CC_IOCQES_R(_v)	(((_v) >> 20) & 0xf)
     50 #define  NVME_CC_IOSQES(_v)	(((_v) & 0xf) << 16)
     51 #define  NVME_CC_IOSQES_MASK	NVME_CC_IOSQES(0xf)
     52 #define  NVME_CC_IOSQES_R(_v)	(((_v) >> 16) & 0xf)
     53 #define  NVME_CC_SHN(_v)	(((_v) & 0x3) << 14)
     54 #define  NVME_CC_SHN_MASK	NVME_CC_SHN(0x3)
     55 #define  NVME_CC_SHN_R(_v)	(((_v) >> 15) & 0x3)
     56 #define  NVME_CC_SHN_NONE	0
     57 #define  NVME_CC_SHN_NORMAL	1
     58 #define  NVME_CC_SHN_ABRUPT	2
     59 #define  NVME_CC_AMS(_v)	(((_v) & 0x7) << 11)
     60 #define  NVME_CC_AMS_MASK	NVME_CC_AMS(0x7)
     61 #define  NVME_CC_AMS_R(_v)	(((_v) >> 11) & 0xf)
     62 #define  NVME_CC_AMS_RR		0 /* round-robin */
     63 #define  NVME_CC_AMS_WRR_U	1 /* weighted round-robin w/ urgent */
     64 #define  NVME_CC_AMS_VENDOR	7 /* vendor */
     65 #define  NVME_CC_MPS(_v)	((((_v) - 12) & 0xf) << 7)
     66 #define  NVME_CC_MPS_MASK	(0xf << 7)
     67 #define  NVME_CC_MPS_R(_v)	(12 + (((_v) >> 7) & 0xf))
     68 #define  NVME_CC_CSS(_v)	(((_v) & 0x7) << 4)
     69 #define  NVME_CC_CSS_MASK	NVME_CC_CSS(0x7)
     70 #define  NVME_CC_CSS_R(_v)	(((_v) >> 4) & 0x7)
     71 #define  NVME_CC_CSS_NVM	0
     72 #define  NVME_CC_EN		__BIT(0)
     73 #define NVME_CSTS	0x001c	/* Controller Status */
     74 #define  NVME_CSTS_SHST_MASK	(0x3 << 2)
     75 #define  NVME_CSTS_SHST_NONE	(0x0 << 2) /* normal operation */
     76 #define  NVME_CSTS_SHST_WAIT	(0x1 << 2) /* shutdown processing occurring */
     77 #define  NVME_CSTS_SHST_DONE	(0x2 << 2) /* shutdown processing complete */
     78 #define  NVME_CSTS_CFS		(1 << 1)
     79 #define  NVME_CSTS_RDY		(1 << 0)
     80 #define NVME_NSSR	0x0020	/* NVM Subsystem Reset (Optional) */
     81 #define NVME_AQA	0x0024	/* Admin Queue Attributes */
     82 				/* Admin Completion Queue Size */
     83 #define  NVME_AQA_ACQS(_v)	(((_v) - 1) << 16)
     84 #define  NVME_AQA_ACQS_R(_v)	((_v >> 16) & ((1 << 12) - 1))
     85 				/* Admin Submission Queue Size */
     86 #define  NVME_AQA_ASQS(_v)	(((_v) - 1) << 0)
     87 #define  NVME_AQA_ASQS_R(_v)	(_v & ((1 << 12) - 1))
     88 #define NVME_ASQ	0x0028	/* Admin Submission Queue Base Address */
     89 #define NVME_ACQ	0x0030	/* Admin Completion Queue Base Address */
     90 
     91 #define NVME_ADMIN_Q		0
     92 /* Submission Queue Tail Doorbell */
     93 #define NVME_SQTDBL(_q, _s)	(0x1000 + (2 * (_q) + 0) * (_s))
     94 /* Completion Queue Head Doorbell */
     95 #define NVME_CQHDBL(_q, _s)	(0x1000 + (2 * (_q) + 1) * (_s))
     96 
     97 struct nvme_sge {
     98 	uint8_t		id;
     99 	uint8_t		_reserved[15];
    100 } __packed __aligned(8);
    101 
    102 struct nvme_sge_data {
    103 	uint8_t		id;
    104 	uint8_t		_reserved[3];
    105 
    106 	uint32_t	length;
    107 
    108 	uint64_t	address;
    109 } __packed __aligned(8);
    110 
    111 struct nvme_sge_bit_bucket {
    112 	uint8_t		id;
    113 	uint8_t		_reserved[3];
    114 
    115 	uint32_t	length;
    116 
    117 	uint64_t	address;
    118 } __packed __aligned(8);
    119 
    120 struct nvme_sqe {
    121 	uint8_t		opcode;
    122 	uint8_t		flags;
    123 	uint16_t	cid;
    124 
    125 	uint32_t	nsid;
    126 
    127 	uint8_t		_reserved[8];
    128 
    129 	uint64_t	mptr;
    130 
    131 	union {
    132 		uint64_t	prp[2];
    133 		struct nvme_sge	sge;
    134 	} __packed	entry;
    135 
    136 	uint32_t	cdw10;
    137 	uint32_t	cdw11;
    138 	uint32_t	cdw12;
    139 	uint32_t	cdw13;
    140 	uint32_t	cdw14;
    141 	uint32_t	cdw15;
    142 } __packed __aligned(8);
    143 
    144 struct nvme_sqe_q {
    145 	uint8_t		opcode;
    146 	uint8_t		flags;
    147 	uint16_t	cid;
    148 
    149 	uint8_t		_reserved1[20];
    150 
    151 	uint64_t	prp1;
    152 
    153 	uint8_t		_reserved2[8];
    154 
    155 	uint16_t	qid;
    156 	uint16_t	qsize;
    157 
    158 	uint8_t		qflags;
    159 #define NVM_SQE_SQ_QPRIO_URG	(0x0 << 1)
    160 #define NVM_SQE_SQ_QPRIO_HI	(0x1 << 1)
    161 #define NVM_SQE_SQ_QPRIO_MED	(0x2 << 1)
    162 #define NVM_SQE_SQ_QPRIO_LOW	(0x3 << 1)
    163 #define NVM_SQE_CQ_IEN		(1 << 1)
    164 #define NVM_SQE_Q_PC		(1 << 0)
    165 	uint8_t		_reserved3;
    166 	uint16_t	cqid; /* XXX interrupt vector for cq */
    167 
    168 	uint8_t		_reserved4[16];
    169 } __packed __aligned(8);
    170 
    171 struct nvme_sqe_io {
    172 	uint8_t		opcode;
    173 	uint8_t		flags;
    174 	uint16_t	cid;
    175 
    176 	uint32_t	nsid;
    177 
    178 	uint8_t		_reserved[8];
    179 
    180 	uint64_t	mptr;
    181 
    182 	union {
    183 		uint64_t	prp[2];
    184 		struct nvme_sge	sge;
    185 	} __packed	entry;
    186 
    187 	uint64_t	slba;	/* Starting LBA */
    188 
    189 	uint16_t	nlb;	/* Number of Logical Blocks */
    190 	uint16_t	ioflags;
    191 #define NVM_SQE_IO_FUA	__BIT(14)	/* Force Unit Access (bypass cache) */
    192 #define NVM_SQE_IO_LR	__BIT(15)	/* Limited Retry */
    193 
    194 	uint8_t		dsm;	/* Dataset Management */
    195 	uint8_t		_reserved2[3];
    196 
    197 	uint32_t	eilbrt;	/* Expected Initial Logical Block
    198 				   Reference Tag */
    199 
    200 	uint16_t	elbat;	/* Expected Logical Block
    201 				   Application Tag */
    202 	uint16_t	elbatm;	/* Expected Logical Block
    203 				   Application Tag Mask */
    204 } __packed __aligned(8);
    205 
    206 struct nvme_cqe {
    207 	uint32_t	cdw0;
    208 
    209 	uint32_t	_reserved;
    210 
    211 	uint16_t	sqhd; /* SQ Head Pointer */
    212 	uint16_t	sqid; /* SQ Identifier */
    213 
    214 	uint16_t	cid; /* Command Identifier */
    215 	uint16_t	flags;
    216 #define NVME_CQE_DNR		__BIT(15)
    217 #define NVME_CQE_M		__BIT(14)
    218 #define NVME_CQE_SCT_MASK	__BITS(8, 10)
    219 #define NVME_CQE_SCT(_f)	((_f) & (0x07 << 8))
    220 #define  NVME_CQE_SCT_GENERIC		(0x00 << 8)
    221 #define  NVME_CQE_SCT_COMMAND		(0x01 << 8)
    222 #define  NVME_CQE_SCT_MEDIAERR		(0x02 << 8)
    223 #define  NVME_CQE_SCT_VENDOR		(0x07 << 8)
    224 #define NVME_CQE_SC_MASK	__BITS(1, 7)
    225 #define NVME_CQE_SC(_f)		((_f) & (0x7f << 1))
    226 /* generic command status codes */
    227 #define  NVME_CQE_SC_SUCCESS		(0x00 << 1)
    228 #define  NVME_CQE_SC_INVALID_OPCODE	(0x01 << 1)
    229 #define  NVME_CQE_SC_INVALID_FIELD	(0x02 << 1)
    230 #define  NVME_CQE_SC_CID_CONFLICT	(0x03 << 1)
    231 #define  NVME_CQE_SC_DATA_XFER_ERR	(0x04 << 1)
    232 #define  NVME_CQE_SC_ABRT_BY_NO_PWR	(0x05 << 1)
    233 #define  NVME_CQE_SC_INTERNAL_DEV_ERR	(0x06 << 1)
    234 #define  NVME_CQE_SC_CMD_ABRT_REQD	(0x07 << 1)
    235 #define  NVME_CQE_SC_CMD_ABDR_SQ_DEL	(0x08 << 1)
    236 #define  NVME_CQE_SC_CMD_ABDR_FUSE_ERR	(0x09 << 1)
    237 #define  NVME_CQE_SC_CMD_ABDR_FUSE_MISS	(0x0a << 1)
    238 #define  NVME_CQE_SC_INVALID_NS		(0x0b << 1)
    239 #define  NVME_CQE_SC_CMD_SEQ_ERR	(0x0c << 1)
    240 #define  NVME_CQE_SC_INVALID_LAST_SGL	(0x0d << 1)
    241 #define  NVME_CQE_SC_INVALID_NUM_SGL	(0x0e << 1)
    242 #define  NVME_CQE_SC_DATA_SGL_LEN	(0x0f << 1)
    243 #define  NVME_CQE_SC_MDATA_SGL_LEN	(0x10 << 1)
    244 #define  NVME_CQE_SC_SGL_TYPE_INVALID	(0x11 << 1)
    245 #define  NVME_CQE_SC_LBA_RANGE		(0x80 << 1)
    246 #define  NVME_CQE_SC_CAP_EXCEEDED	(0x81 << 1)
    247 #define  NVME_CQE_SC_NS_NOT_RDY		(0x82 << 1)
    248 #define  NVME_CQE_SC_RSV_CONFLICT	(0x83 << 1)
    249 /* command specific status codes */
    250 #define  NVME_CQE_SC_CQE_INVALID	(0x00 << 1)
    251 #define  NVME_CQE_SC_INVALID_QID	(0x01 << 1)
    252 #define  NVME_CQE_SC_MAX_Q_SIZE		(0x02 << 1)
    253 #define  NVME_CQE_SC_ABORT_LIMIT	(0x03 << 1)
    254 #define  NVME_CQE_SC_ASYNC_EV_REQ_LIMIT	(0x05 << 1)
    255 #define  NVME_CQE_SC_INVALID_FW_SLOT	(0x06 << 1)
    256 #define  NVME_CQE_SC_INVALID_FW_IMAGE	(0x07 << 1)
    257 #define  NVME_CQE_SC_INVALID_INT_VEC	(0x08 << 1)
    258 #define  NVME_CQE_SC_INVALID_LOG_PAGE	(0x09 << 1)
    259 #define  NVME_CQE_SC_INVALID_FORMAT	(0x0a << 1)
    260 #define  NVME_CQE_SC_FW_REQ_CNV_RESET	(0x0b << 1)
    261 #define  NVME_CQE_SC_FW_REQ_NVM_RESET	(0x10 << 1)
    262 #define  NVME_CQE_SC_FW_REQ_RESET	(0x11 << 1)
    263 #define  NVME_CQE_SC_FW_MAX_TIME_VIO	(0x12 << 1)
    264 #define  NVME_CQE_SC_FW_PROHIBIT	(0x13 << 1)
    265 #define  NVME_CQE_SC_OVERLAP_RANGE	(0x14 << 1)
    266 #define  NVME_CQE_SC_CONFLICT_ATTRS	(0x80 << 1)
    267 #define  NVME_CQE_SC_INVALID_PROT_INFO	(0x81 << 1)
    268 #define  NVME_CQE_SC_ATT_WR_TO_RO_PAGE	(0x82 << 1)
    269 /* media error status codes */
    270 #define  NVME_CQE_SC_WRITE_FAULTS	(0x80 << 1)
    271 #define  NVME_CQE_SC_UNRECV_READ_ERR	(0x81 << 1)
    272 #define  NVME_CQE_SC_GUARD_CHECK_ERR	(0x82 << 1)
    273 #define  NVME_CQE_SC_APPL_TAG_CHECK_ERR	(0x83 << 1)
    274 #define  NVME_CQE_SC_REF_TAG_CHECK_ERR	(0x84 << 1)
    275 #define  NVME_CQE_SC_CMP_FAIL		(0x85 << 1)
    276 #define  NVME_CQE_SC_ACCESS_DENIED	(0x86 << 1)
    277 #define NVME_CQE_PHASE		__BIT(0)
    278 } __packed __aligned(8);
    279 
    280 #define NVM_ADMIN_DEL_IOSQ	0x00 /* Delete I/O Submission Queue */
    281 #define NVM_ADMIN_ADD_IOSQ	0x01 /* Create I/O Submission Queue */
    282 #define NVM_ADMIN_GET_LOG_PG	0x02 /* Get Log Page */
    283 #define NVM_ADMIN_DEL_IOCQ	0x04 /* Delete I/O Completion Queue */
    284 #define NVM_ADMIN_ADD_IOCQ	0x05 /* Create I/O Completion Queue */
    285 #define NVM_ADMIN_IDENTIFY	0x06 /* Identify */
    286 #define NVM_ADMIN_ABORT		0x08 /* Abort */
    287 #define NVM_ADMIN_SET_FEATURES	0x09 /* Set Features */
    288 #define NVM_ADMIN_GET_FEATURES	0x0a /* Get Features */
    289 #define NVM_ADMIN_ASYNC_EV_REQ	0x0c /* Asynchronous Event Request */
    290 #define NVM_ADMIN_FW_COMMIT	0x10 /* Firmware Commit */
    291 #define NVM_ADMIN_FW_DOWNLOAD	0x11 /* Firmware Image Download */
    292 
    293 #define NVM_CMD_FLUSH		0x00 /* Flush */
    294 #define NVM_CMD_WRITE		0x01 /* Write */
    295 #define NVM_CMD_READ		0x02 /* Read */
    296 #define NVM_CMD_WR_UNCOR	0x04 /* Write Uncorrectable */
    297 #define NVM_CMD_COMPARE		0x05 /* Compare */
    298 #define NVM_CMD_DSM		0x09 /* Dataset Management */
    299 
    300 /* Power State Descriptor Data */
    301 struct nvm_identify_psd {
    302 	uint16_t	mp;		/* Max Power */
    303 	uint8_t		_reserved1;
    304 	uint8_t		flags;
    305 #define	NVME_PSD_NOPS		__BIT(1)
    306 #define	NVME_PSD_MPS		__BIT(0)
    307 
    308 	uint32_t	enlat;		/* Entry Latency */
    309 
    310 	uint32_t	exlat;		/* Exit Latency */
    311 
    312 	uint8_t		rrt;		/* Relative Read Throughput */
    313 #define	NVME_PSD_RRT_MASK	__BITS(0, 4)
    314 	uint8_t		rrl;		/* Relative Read Latency */
    315 #define	NVME_PSD_RRL_MASK	__BITS(0, 4)
    316 	uint8_t		rwt;		/* Relative Write Throughput */
    317 #define	NVME_PSD_RWT_MASK	__BITS(0, 4)
    318 	uint8_t		rwl;		/* Relative Write Latency */
    319 #define	NVME_PSD_RWL_MASK	__BITS(0, 4)
    320 
    321 	uint16_t	idlp;		/* Idle Power */
    322 	uint8_t		ips;		/* Idle Power Scale */
    323 #define	NVME_PSD_IPS_MASK	__BITS(0, 1)
    324 	uint8_t		_reserved2;
    325 	uint16_t	actp;		/* Active Power */
    326 	uint16_t	ap;		/* Active Power Workload/Scale */
    327 #define	NVME_PSD_APW_MASK	__BITS(0, 2)
    328 #define	NVME_PSD_APS_MASK	__BITS(6, 7)
    329 
    330 	uint8_t		_reserved[8];
    331 } __packed __aligned(8);
    332 
    333 struct nvm_identify_controller {
    334 	/* Controller Capabilities and Features */
    335 
    336 	uint16_t	vid;		/* PCI Vendor ID */
    337 	uint16_t	ssvid;		/* PCI Subsystem Vendor ID */
    338 
    339 	uint8_t		sn[20];		/* Serial Number */
    340 	uint8_t		mn[40];		/* Model Number */
    341 	uint8_t		fr[8];		/* Firmware Revision */
    342 
    343 	uint8_t		rab;		/* Recommended Arbitration Burst */
    344 	uint8_t		ieee[3];	/* IEEE OUI Identifier */
    345 
    346 	uint8_t		cmic;		/* Controller Multi-Path I/O and
    347 					   Namespace Sharing Capabilities */
    348 	uint8_t		mdts;		/* Maximum Data Transfer Size */
    349 	uint16_t	cntlid;		/* Controller ID */
    350 
    351 	uint8_t		_reserved1[176];
    352 
    353 	/* Admin Command Set Attributes & Optional Controller Capabilities */
    354 
    355 	uint16_t	oacs;		/* Optional Admin Command Support */
    356 #define	NVME_ID_CTRLR_OACS_NS		__BIT(3)
    357 #define	NVME_ID_CTRLR_OACS_FW		__BIT(2)
    358 #define	NVME_ID_CTRLR_OACS_FORMAT	__BIT(1)
    359 #define	NVME_ID_CTRLR_OACS_SECURITY	__BIT(0)
    360 	uint8_t		acl;		/* Abort Command Limit */
    361 	uint8_t		aerl;		/* Asynchronous Event Request Limit */
    362 
    363 	uint8_t		frmw;		/* Firmware Updates */
    364 #define	NVME_ID_CTRLR_FRMW_NOREQ_RESET	__BIT(4)
    365 #define	NVME_ID_CTRLR_FRMW_NSLOT	__BITS(1, 3)
    366 #define	NVME_ID_CTRLR_FRMW_SLOT1_RO	__BIT(0)
    367 	uint8_t		lpa;		/* Log Page Attributes */
    368 #define	NVME_ID_CTRLR_LPA_CMD_EFFECT	__BIT(1)
    369 #define	NVME_ID_CTRLR_LPA_NS_SMART	__BIT(0)
    370 	uint8_t		elpe;		/* Error Log Page Entries */
    371 	uint8_t		npss;		/* Number of Power States Support */
    372 
    373 	uint8_t		avscc;		/* Admin Vendor Specific Command
    374 					   Configuration */
    375 	uint8_t		apsta;		/* Autonomous Power State Transition
    376 					   Attributes */
    377 
    378 	uint8_t		_reserved2[246];
    379 
    380 	/* NVM Command Set Attributes */
    381 
    382 	uint8_t		sqes;		/* Submission Queue Entry Size */
    383 #define	NVME_ID_CTRLR_SQES_MAX		__BITS(4, 7)
    384 #define	NVME_ID_CTRLR_SQES_MIN		__BITS(0, 3)
    385 	uint8_t		cqes;		/* Completion Queue Entry Size */
    386 #define	NVME_ID_CTRLR_CQES_MAX		__BITS(4, 7)
    387 #define	NVME_ID_CTRLR_CQES_MIN		__BITS(0, 3)
    388 	uint8_t		_reserved3[2];
    389 
    390 	uint32_t	nn;		/* Number of Namespaces */
    391 
    392 	uint16_t	oncs;		/* Optional NVM Command Support */
    393 #define	NVME_ID_CTRLR_ONCS_RESERVATION	__BIT(5)
    394 #define	NVME_ID_CTRLR_ONCS_SET_FEATURES	__BIT(4)
    395 #define	NVME_ID_CTRLR_ONCS_WRITE_ZERO	__BIT(3)
    396 #define	NVME_ID_CTRLR_ONCS_DSM		__BIT(2)
    397 #define	NVME_ID_CTRLR_ONCS_WRITE_UNC	__BIT(1)
    398 #define	NVME_ID_CTRLR_ONCS_COMPARE	__BIT(0)
    399 	uint16_t	fuses;		/* Fused Operation Support */
    400 
    401 	uint8_t		fna;		/* Format NVM Attributes */
    402 	uint8_t		vwc;		/* Volatile Write Cache */
    403 #define	NVME_ID_CTRLR_VWC_PRESENT	__BIT(0)
    404 	uint16_t	awun;		/* Atomic Write Unit Normal */
    405 
    406 	uint16_t	awupf;		/* Atomic Write Unit Power Fail */
    407 	uint8_t		nvscc;		/* NVM Vendor Specific Command */
    408 	uint8_t		_reserved4[1];
    409 
    410 	uint16_t	acwu;		/* Atomic Compare & Write Unit */
    411 	uint8_t		_reserved5[2];
    412 
    413 	uint32_t	sgls;		/* SGL Support */
    414 
    415 	uint8_t		_reserved6[164];
    416 
    417 	/* I/O Command Set Attributes */
    418 
    419 	uint8_t		_reserved7[1344];
    420 
    421 	/* Power State Descriptors */
    422 
    423 	struct nvm_identify_psd psd[32]; /* Power State Descriptors */
    424 
    425 	/* Vendor Specific */
    426 
    427 	uint8_t		_reserved8[1024];
    428 } __packed __aligned(8);
    429 
    430 struct nvm_namespace_format {
    431 	uint16_t	ms;		/* Metadata Size */
    432 	uint8_t		lbads;		/* LBA Data Size */
    433 	uint8_t		rp;		/* Relative Performance */
    434 } __packed __aligned(4);
    435 
    436 struct nvm_identify_namespace {
    437 	uint64_t	nsze;		/* Namespace Size */
    438 
    439 	uint64_t	ncap;		/* Namespace Capacity */
    440 
    441 	uint64_t	nuse;		/* Namespace Utilization */
    442 
    443 	uint8_t		nsfeat;		/* Namespace Features */
    444 #define	NVME_ID_NS_NSFEAT_LOGICAL_BLK_ERR	__BIT(2)
    445 #define	NVME_ID_NS_NSFEAT_NS			__BIT(1)
    446 #define	NVME_ID_NS_NSFEAT_THIN_PROV		__BIT(0)
    447 	uint8_t		nlbaf;		/* Number of LBA Formats */
    448 	uint8_t		flbas;		/* Formatted LBA Size */
    449 #define NVME_ID_NS_FLBAS(_f)			((_f) & 0x0f)
    450 #define NVME_ID_NS_FLBAS_MD			0x10
    451 	uint8_t		mc;		/* Metadata Capabilities */
    452 	uint8_t		dpc;		/* End-to-end Data Protection
    453 					   Capabilities */
    454 	uint8_t		dps;		/* End-to-end Data Protection Type Settings */
    455 
    456 	uint8_t		_reserved1[98];
    457 
    458 	struct nvm_namespace_format
    459 			lbaf[16];	/* LBA Format Support */
    460 
    461 	uint8_t		_reserved2[192];
    462 
    463 	uint8_t		vs[3712];
    464 } __packed __aligned(8);
    465 
    466 #endif	/* __NVMEREG_H__ */
    467