root/sys/dev/disk/nvme/nvme_log.h
/*
 * Copyright (c) 2016 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Get Log Page - Error Information (Log ID 01) (64 bytes)
 */
typedef struct {
        uint64_t        error_count;
        uint16_t        subq_id;
        uint16_t        cmd_id;
        uint16_t        status;
        uint16_t        param;
        uint64_t        lba;
        uint32_t        nsid;
        uint8_t         vendor;
        uint8_t         reserved29;
        uint8_t         reserved30;
        uint8_t         reserved31;
        uint64_t        csi;            /* command specific information */
        uint8_t         reserved40[24];
} __packed nvme_log_error_data_t;

/*
 * Get Log Page - Smart/ Health Information (Log ID 02) (512 bytes)
 */
typedef struct {
        uint8_t         crit_flags;
        uint8_t         comp_temp1;
        uint8_t         comp_temp2;
        uint8_t         spare_cap;      /* normalized spare capacity 0-100 */
        uint8_t         spare_thresh;   /* event when cap falls below value */
        uint8_t         rated_life;     /* 0-100, may exceed capped at 255 */
        uint8_t         reserved6[26];

                                        /* 16-byte fields lo, hi */
        uint64_t        read_count[2];  /* in 512000 byte units */
        uint64_t        write_count[2]; /* in 512000 byte units */
        uint64_t        read_cmds[2];
        uint64_t        write_cmds[2];
        uint64_t        busy_time[2];   /* in minutes */
        uint64_t        power_cycles[2];
        uint64_t        powon_hours[2];
        uint64_t        unsafe_shutdowns[2];
        uint64_t        unrecoverable_errors[2];
        uint64_t        error_log_entries[2];

        uint32_t        warn_comp_temp_time; /* minutes temp > warn level */
        uint32_t        crit_comp_temp_time; /* minutes temp > crit level */

        uint16_t        temp_sensors[8]; /* sensors 1-8 in kelvin 0=unimp */

        uint8_t         reserved216[296];
} __packed nvme_log_smart_data_t;

#define NVME_SMART_CRF_BELOW_THRESH     0x01
#define NVME_SMART_CRF_ABOVE_THRESH     0x02    /* or below under-temp thresh*/
#define NVME_SMART_CRF_UNRELIABLE       0x04
#define NVME_SMART_CRF_MEDIA_RO         0x08
#define NVME_SMART_CRF_VOLTL_BKUP_FAIL  0x10
#define NVME_SMART_CRF_RES20            0x20
#define NVME_SMART_CRF_RES40            0x40
#define NVME_SMART_CRF_RES80            0x80

/*
 * Firmware Slot Information (Log ID 03) (512 bytes)
 */
typedef struct {
        uint8_t         flags;
        uint8_t         reserved1[7];
        uint64_t        revision[7];    /* revision slot 1-7 */
        uint8_t         reserved64[448];
} __packed nvme_fw_slot_data_t;

#define NVME_FWSLOT_CRF_RESERVED_80     0x80
#define NVME_FWSLOT_CRF_FWNEXT_MASK     0x70
#define NVME_FWSLOT_CRF_RESERVED_08     0x08
#define NVME_FWSLOT_CRF_FWCURR_MASK     0x07

#define NVME_FWSLOT_CRF_FWNEXT_GET(data)        \
                (((data) & NVME_FWSLOT_CRF_FWNEXT_MASK) >> 4)
#define NVME_FWSLOT_CRF_FWCURR_GET(data)        \
                ((data) & NVME_FWSLOT_CRF_FWCURR_MASK)

/*
 * Command Supported and Effects (Log ID 05) (4096 bytes)
 *
 * Iterates available admin and I/O commands, one command-effects data
 * structure for each command, indexed by command id.
 *
 * CSE - Indicates whether command must be serialized (i.e. no other
 *       commands may be pending in the namespace or globally).
 *
 * CSUPP - Indicates that the command is supported by the controller
 *         (use for iteration skip).
 */
typedef struct {
        uint32_t        admin_cmds[256];
        uint32_t        io_cmds[256];
} __packed nvme_cmdeff_data_t;

#define NVME_CMDEFF_RESERVED19          0xFFF80000U
#define NVME_CMDEFF_CSE_MASK            0x00007000U
#define NVME_CMDEFF_RESERVED05          0x00000FE0U
#define NVME_CMDEFF_CCC                 0x00000010U
#define NVME_CMDEFF_NIC                 0x00000008U
#define NVME_CMDEFF_NCC                 0x00000004U
#define NVME_CMDEFF_LBCC                0x00000002U
#define NVME_CMDEFF_CSUPP               0x00000001U

#define NVME_CMDEFF_CSE_NORM            0x00000000U
#define NVME_CMDEFF_CSE_NS_SERIALIZE    0x00001000U
#define NVME_CMDEFF_CSE_GLOB_SERIALIZE  0x00002000U

/*
 * Reservation Notification (Log ID 0x80) (64 bytes)
 */
typedef struct {
        uint64_t        logpg_count;
        uint8_t         type;
        uint8_t         logpg_avail;
        uint8_t         reserved10[2];
        uint32_t        nsid;
        uint8_t         reserved16[48];
} __packed nvme_resnotify_data_t;

#define NVME_RESNOTIFY_EMPTY            0x00
#define NVME_RESNOTIFY_REG_PREEMPTED    0x01
#define NVME_RESNOTIFY_RES_RELEASED     0x02
#define NVME_RESNOTIFY_RES_PREEMPTED    0x03
                                        /* 04-FF reserved */

/* TYPE_CSS status */
#define NVME_RESNOTIFY_INVALID          0x09