// SPDX-License-Identifier: GPL-2.0-or-later
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>

#include "nvme.h"
#include "libnvme.h"
#include "plugin.h"
#include "linux/types.h"
#include "nvme-print.h"

#define CREATE_CMD
#include "memblaze-nvme.h"
#include "memblaze-utils.h"

enum {
    // feature id
    MB_FEAT_POWER_MGMT = 0x02,
    MB_FEAT_HIGH_LATENCY = 0xE1,
    // log id
    GLP_ID_VU_GET_READ_LATENCY_HISTOGRAM = 0xC1,
    GLP_ID_VU_GET_WRITE_LATENCY_HISTOGRAM = 0xC2,
    GLP_ID_VU_GET_HIGH_LATENCY_LOG = 0xC3,
    MB_FEAT_CLEAR_ERRORLOG = 0xF7,
};

#define LOG_PAGE_SIZE                                      (0x1000)
#define DO_PRINT_FLAG                                      (1)
#define NOT_PRINT_FLAG                                     (0)
#define FID_C1_LOG_FILENAME                                "log_c1.csv"
#define FID_C2_LOG_FILENAME                                "log_c2.csv"
#define FID_C3_LOG_FILENAME                                "log_c3.csv"

/*
 * Return -1 if @fw1 < @fw2
 * Return 0 if @fw1 == @fw2
 * Return 1 if @fw1 > @fw2
 */
static int compare_fw_version(const char *fw1, const char *fw2)
{
    while (*fw1 != '\0') {
        if (*fw2 == '\0' || *fw1 > *fw2)
            return 1;
        if (*fw1 < *fw2)
            return -1;
        fw1++;
        fw2++;
    }

    if (*fw2 != '\0')
        return -1;

    return 0;
}

/**********************************************************
 * input: firmware version string
 * output:
 *     1: new intel format
 *     0: old memblaze format
 * *******************************************************/
#define MEMBLAZE_FORMAT         (0)
#define INTEL_FORMAT            (1)

// 2.13 = papaya
#define IS_PAPAYA(str)          (!strcmp(str, "2.13"))
// 2.83 = raisin
#define IS_RAISIN(str)          (!strcmp(str, "2.83"))
// 2.94 = kumquat
#define IS_KUMQUAT(str)         (!strcmp(str, "2.94"))
// 0.60 = loquat
#define IS_LOQUAT(str)          (!strcmp(str, "0.60"))

#define STR_VER_SIZE            (5)

int getlogpage_format_type(char *model_name)
{
    int logpage_format_type = INTEL_FORMAT;
    const char *boundary_model_name1 = "P"; // MEMBLAZE P7936DT0640M00
    const char *boundary_model_name2 = "P5920"; // Use INTEL_FORMAT from Raisin P5920.
    if (0 == strncmp(model_name, boundary_model_name1, strlen(boundary_model_name1)))
    {
        if (strncmp(model_name, boundary_model_name2, strlen(boundary_model_name2)) < 0)
        {
            logpage_format_type = MEMBLAZE_FORMAT;
        }
    }
    return logpage_format_type;
}

static __u32 item_id_2_u32(struct nvme_memblaze_smart_log_item *item)
{
    __le32  __id = 0;
    memcpy(&__id, item->id, 3);
    return le32_to_cpu(__id);
}

static __u64 raw_2_u64(const __u8 *buf, size_t len)
{
    __le64  val = 0;
    memcpy(&val, buf, len);
    return le64_to_cpu(val);
}

#define STRN2_01    "Additional Smart Log for NVME device"
#define STRN2_02    "namespace-id"
#define STRN1_01    "key"
#define STRN1_02    "normalized"
#define STRN1_03    "raw"
#define STR00_01    "program_fail_count"
#define STR01_01    "erase_fail_count"
#define STR02_01    "wear_leveling"
#define STR02_03    "min: "
#define STR02_04    ", max: "
#define STR02_05    ", avg: "
#define STR03_01    "end_to_end_error_detection_count"
#define STR04_01    "crc_error_count"
#define STR05_01    "timed_workload_media_wear"
#define STR06_01    "timed_workload_host_reads"
#define STR07_01    "timed_workload_timer"
#define STR07_02    " min"
#define STR08_01    "thermal_throttle_status"
#define STR08_02    ", cnt: "
#define STR09_01    "retry_buffer_overflow_count"
#define STR10_01    "pll_lock_loss_count"
#define STR11_01    "nand_bytes_written"
#define STR11_03    "sectors: "
#define STR12_01    "host_bytes_written"
#define STR12_03    "sectors: "
#define STR13_01    "system_area_life_left"
#define STR14_01    "total_read"
#define STR15_01    "tempt_since_born"
#define STR15_03    "max: "
#define STR15_04    ", min: "
#define STR15_05    ", curr: "
#define STR16_01    "power_consumption"
#define STR16_03    "max: "
#define STR16_04    ", min: "
#define STR16_05    ", curr: "
#define STR17_01    "tempt_since_bootup"
#define STR17_03    "max: "
#define STR17_04    ", min: "
#define STR17_05    ", curr: "
#define STR18_01    "power_loss_protection"
#define STR19_01    "read_fail_count"
#define STR20_01    "thermal_throttle_time"
#define STR21_01    "flash_media_error"

static void get_memblaze_new_smart_info(struct nvme_p4_smart_log *smart, int index, u8 *nm_val, u8 *raw_val)
{
    memcpy(nm_val, smart->itemArr[index].nmVal, NM_SIZE);
    memcpy(raw_val, smart->itemArr[index].rawVal, RAW_SIZE);
}

static void show_memblaze_smart_log_new(struct nvme_memblaze_smart_log *s,
    unsigned int nsid, const char *devname)
{
    struct nvme_p4_smart_log *smart = (struct nvme_p4_smart_log *)s;
    u8 *nm = malloc(NM_SIZE * sizeof(u8));
    u8 *raw = malloc(RAW_SIZE * sizeof(u8));

    if (!nm) {
        if (raw)
            free(raw);
        return;
    }
    if (!raw) {
        free(nm);
        return;
    }
    /* Table Title */
    printf("%s:%s %s:%x\n", STRN2_01, devname, STRN2_02, nsid);
    /* Clumn Name*/
    printf("%-34s%-11s%s\n", STRN1_01, STRN1_02, STRN1_03);
    /* 00 RAISIN_SI_VD_PROGRAM_FAIL */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_PROGRAM_FAIL, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR00_01, *nm, int48_to_long(raw));
    /* 01 RAISIN_SI_VD_ERASE_FAIL */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_ERASE_FAIL, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR01_01, *nm, int48_to_long(raw));
    /* 02 RAISIN_SI_VD_WEARLEVELING_COUNT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_WEARLEVELING_COUNT, nm, raw);
    printf("%-31s : %3d%%       %s%u%s%u%s%u\n", STR02_01, *nm,
        STR02_03, *raw, STR02_04, *(raw+2), STR02_05, *(raw+4));
    /* 03 RAISIN_SI_VD_E2E_DECTECTION_COUNT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_E2E_DECTECTION_COUNT, nm, raw);
    printf("%-31s: %3d%%       %"PRIu64"\n", STR03_01, *nm, int48_to_long(raw));
    /* 04 RAISIN_SI_VD_PCIE_CRC_ERR_COUNT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_PCIE_CRC_ERR_COUNT, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR04_01, *nm, int48_to_long(raw));
    /* 05 RAISIN_SI_VD_TIMED_WORKLOAD_MEDIA_WEAR */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TIMED_WORKLOAD_MEDIA_WEAR, nm, raw);
    printf("%-32s: %3d%%       %.3f%%\n", STR05_01, *nm, ((float)int48_to_long(raw))/1000);
    /* 06 RAISIN_SI_VD_TIMED_WORKLOAD_HOST_READ */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TIMED_WORKLOAD_HOST_READ, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"%%\n", STR06_01, *nm, int48_to_long(raw));
    /* 07 RAISIN_SI_VD_TIMED_WORKLOAD_TIMER */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TIMED_WORKLOAD_TIMER, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"%s\n", STR07_01, *nm, int48_to_long(raw), STR07_02);
    /* 08 RAISIN_SI_VD_THERMAL_THROTTLE_STATUS */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_THERMAL_THROTTLE_STATUS, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"%%%s%"PRIu64"\n", STR08_01, *nm,
        int48_to_long(raw), STR08_02, int48_to_long(raw+1));
    /* 09 RAISIN_SI_VD_RETRY_BUFF_OVERFLOW_COUNT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_RETRY_BUFF_OVERFLOW_COUNT, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR09_01, *nm, int48_to_long(raw));
    /* 10 RAISIN_SI_VD_PLL_LOCK_LOSS_COUNT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_PLL_LOCK_LOSS_COUNT, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR10_01, *nm, int48_to_long(raw));
    /* 11 RAISIN_SI_VD_TOTAL_WRITE */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TOTAL_WRITE, nm, raw);
    printf("%-32s: %3d%%       %s%"PRIu64"\n", STR11_01, *nm, STR11_03, int48_to_long(raw));
    /* 12 RAISIN_SI_VD_HOST_WRITE */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_HOST_WRITE, nm, raw);
    printf("%-32s: %3d%%       %s%"PRIu64"\n", STR12_01, *nm, STR12_03, int48_to_long(raw));
    /* 13 RAISIN_SI_VD_SYSTEM_AREA_LIFE_LEFT */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_SYSTEM_AREA_LIFE_LEFT, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR13_01, *nm, int48_to_long(raw));
    /* 14 RAISIN_SI_VD_TOTAL_READ */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TOTAL_READ, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR14_01, *nm, int48_to_long(raw));
    /* 15 RAISIN_SI_VD_TEMPT_SINCE_BORN */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TEMPT_SINCE_BORN, nm, raw);
    printf("%-32s: %3d%%       %s%u%s%u%s%u\n", STR15_01,  *nm,
        STR15_03, *raw, STR15_04, *(raw+2), STR15_05, *(raw+4));
    /* 16 RAISIN_SI_VD_POWER_CONSUMPTION */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_POWER_CONSUMPTION, nm, raw);
    printf("%-32s: %3d%%       %s%u%s%u%s%u\n", STR16_01,  *nm,
        STR16_03, *raw, STR16_04, *(raw+2), STR16_05, *(raw+4));
    /* 17 RAISIN_SI_VD_TEMPT_SINCE_BOOTUP */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_TEMPT_SINCE_BOOTUP, nm, raw);
    printf("%-32s: %3d%%       %s%u%s%u%s%u\n", STR17_01,  *nm, STR17_03, *raw,
        STR17_04, *(raw+2), STR17_05, *(raw+4));
    /* 18 RAISIN_SI_VD_POWER_LOSS_PROTECTION */
    /* 19 RAISIN_SI_VD_READ_FAIL */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_READ_FAIL, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR19_01, *nm, int48_to_long(raw));
    /* 20 RAISIN_SI_VD_THERMAL_THROTTLE_TIME */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_THERMAL_THROTTLE_TIME, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR20_01, *nm, int48_to_long(raw));
    /* 21 RAISIN_SI_VD_FLASH_MEDIA_ERROR */
    get_memblaze_new_smart_info(smart, RAISIN_SI_VD_FLASH_MEDIA_ERROR, nm, raw);
    printf("%-32s: %3d%%       %"PRIu64"\n", STR21_01, *nm, int48_to_long(raw));

    free(nm);
    free(raw);
}

static void show_memblaze_smart_log_old(struct nvme_memblaze_smart_log *smart,
    unsigned int nsid, const char *devname, const char *fw_ver)
{
    char fw_ver_local[STR_VER_SIZE + 1];
    struct nvme_memblaze_smart_log_item *item;

    strncpy(fw_ver_local, fw_ver, STR_VER_SIZE);
    *(fw_ver_local + STR_VER_SIZE) = '\0';

    printf("Additional Smart Log for NVME device:%s namespace-id:%x\n", devname, nsid);

    printf("Total write in GB since last factory reset			: %"PRIu64"\n",
        int48_to_long(smart->items[TOTAL_WRITE].rawval));
    printf("Total read in GB since last factory reset			: %"PRIu64"\n",
        int48_to_long(smart->items[TOTAL_READ].rawval));

    printf("Thermal throttling status[1:HTP in progress]			: %u\n",
        smart->items[THERMAL_THROTTLE].thermal_throttle.on);
    printf("Total thermal throttling minutes since power on			: %u\n",
        smart->items[THERMAL_THROTTLE].thermal_throttle.count);

    printf("Maximum temperature in Kelvin since last factory reset		: %u\n",
        le16_to_cpu(smart->items[TEMPT_SINCE_RESET].temperature.max));
    printf("Minimum temperature in Kelvin since last factory reset		: %u\n",
        le16_to_cpu(smart->items[TEMPT_SINCE_RESET].temperature.min));
    if (compare_fw_version(fw_ver, "0.09.0300") != 0) {
        printf("Maximum temperature in Kelvin since power on			: %u\n",
            le16_to_cpu(smart->items[TEMPT_SINCE_BOOTUP].temperature_p.max));
        printf("Minimum temperature in Kelvin since power on			: %u\n",
            le16_to_cpu(smart->items[TEMPT_SINCE_BOOTUP].temperature_p.min));
    }
    printf("Current temperature in Kelvin					: %u\n",
        le16_to_cpu(smart->items[TEMPT_SINCE_RESET].temperature.curr));

    printf("Maximum power in watt since power on				: %u\n",
        le16_to_cpu(smart->items[POWER_CONSUMPTION].power.max));
    printf("Minimum power in watt since power on				: %u\n",
        le16_to_cpu(smart->items[POWER_CONSUMPTION].power.min));
    printf("Current power in watt						: %u\n",
        le16_to_cpu(smart->items[POWER_CONSUMPTION].power.curr));

    item = &smart->items[POWER_LOSS_PROTECTION];
    if (item_id_2_u32(item) == 0xEC)
        printf("Power loss protection normalized value				: %u\n",
            item->power_loss_protection.curr);

    item = &smart->items[WEARLEVELING_COUNT];
    if (item_id_2_u32(item) == 0xAD) {
        printf("Percentage of wearleveling count left				: %u\n",
            le16_to_cpu(item->nmval));
        printf("Wearleveling count min erase cycle				: %u\n",
            le16_to_cpu(item->wearleveling_count.min));
        printf("Wearleveling count max erase cycle				: %u\n",
            le16_to_cpu(item->wearleveling_count.max));
        printf("Wearleveling count avg erase cycle				: %u\n",
            le16_to_cpu(item->wearleveling_count.avg));
    }

    item = &smart->items[HOST_WRITE];
    if (item_id_2_u32(item) == 0xF5)
        printf("Total host write in GiB since device born 			: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[THERMAL_THROTTLE_CNT];
    if (item_id_2_u32(item) == 0xEB)
        printf("Thermal throttling count since device born 			: %u\n",
            item->thermal_throttle_cnt.cnt);

    item = &smart->items[CORRECT_PCIE_PORT0];
    if (item_id_2_u32(item) == 0xED)
        printf("PCIE Correctable Error Count of Port0    			: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[CORRECT_PCIE_PORT1];
    if (item_id_2_u32(item) == 0xEE)
        printf("PCIE Correctable Error Count of Port1 	        		: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[REBUILD_FAIL];
    if (item_id_2_u32(item) == 0xEF)
        printf("End-to-End Error Detection Count 	        		: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[ERASE_FAIL];
    if (item_id_2_u32(item) == 0xF0)
        printf("Erase Fail Count 		                        	: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[PROGRAM_FAIL];
    if (item_id_2_u32(item) == 0xF1)
        printf("Program Fail Count 		                        	: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

    item = &smart->items[READ_FAIL];
    if (item_id_2_u32(item) == 0xF2)
        printf("Read Fail Count	                                 		: %llu\n",
            (unsigned long long)raw_2_u64(item->rawval, sizeof(item->rawval)));

     if ( IS_PAPAYA(fw_ver_local) ) {
        struct nvme_p4_smart_log *s = (struct nvme_p4_smart_log *)smart;
        u8 *nm = malloc(NM_SIZE * sizeof(u8));
        u8 *raw = malloc(RAW_SIZE * sizeof(u8));

	if (!nm) {
            if (raw)
                free(raw);
            return;
	}
	if (!raw) {
            free(nm);
            return;
	}
        /* 00 RAISIN_SI_VD_PROGRAM_FAIL */
        get_memblaze_new_smart_info(s, PROGRAM_FAIL, nm, raw);
        printf("%-32s                                : %3d%%       %"PRIu64"\n",
			STR00_01, *nm, int48_to_long(raw));
        /* 01 RAISIN_SI_VD_ERASE_FAIL */
        get_memblaze_new_smart_info(s, ERASE_FAIL, nm, raw);
        printf("%-32s                                : %3d%%       %"PRIu64"\n",
			STR01_01, *nm, int48_to_long(raw));
        /* 02 RAISIN_SI_VD_WEARLEVELING_COUNT */
        get_memblaze_new_smart_info(s, WEARLEVELING_COUNT, nm, raw);
        printf("%-31s                                 : %3d%%       %s%u%s%u%s%u\n",
			STR02_01, *nm, STR02_03, *raw, STR02_04, *(raw+2), STR02_05, *(raw+4));
        /* 11 RAISIN_SI_VD_TOTAL_WRITE */
        get_memblaze_new_smart_info(s, TOTAL_WRITE, nm, raw);
        printf("%-32s                                : %3d%%       %"PRIu64"\n",
			STR11_01, *nm, 32*int48_to_long(raw));
        /* 12 RAISIN_SI_VD_HOST_WRITE */
        get_memblaze_new_smart_info(s, HOST_WRITE, nm, raw);
        printf("%-32s                                : %3d%%       %"PRIu64"\n",
			STR12_01, *nm, 32*int48_to_long(raw));

        free(nm);
        free(raw);
    }
}

static int show_memblaze_smart_log(int fd, __u32 nsid, const char *devname,
    struct nvme_memblaze_smart_log *smart)
{
    struct nvme_id_ctrl ctrl;
    char fw_ver[10];
    int err = 0;

    err = nvme_identify_ctrl(fd, &ctrl);
    if (err)
        return err;

    snprintf(fw_ver, sizeof(fw_ver), "%c.%c%c.%c%c%c%c",
        ctrl.fr[0], ctrl.fr[1], ctrl.fr[2], ctrl.fr[3],
        ctrl.fr[4], ctrl.fr[5], ctrl.fr[6]);

    if (getlogpage_format_type(ctrl.mn)) // Intel Format & new format
    {
        show_memblaze_smart_log_new(smart, nsid, devname);
    }
    else  // Memblaze Format & old format
    {
        show_memblaze_smart_log_old(smart, nsid, devname, fw_ver);
    }
	return err;
}

int parse_params(char *str, int number, ...)
{
    va_list argp;
    int *param;
    char *c;
    int value;

    va_start(argp, number);

    while (number > 0) {
        c = strtok(str, ",");
        if ( c == NULL) {
            printf("No enough parameters. abort...\n");
            va_end(argp);
            return 1;
        }

        if (isalnum((int)*c) == 0) {
            printf("%s is not a valid number\n", c);
            va_end(argp);
            return 1;
        }
        value = atoi(c);
        param = va_arg(argp, int *);
        *param = value;

        if (str) {
            str = strchr(str, ',');
            if (str) { str++; }
        }
        number--;
    }
    va_end(argp);

    return 0;
}

static int mb_get_additional_smart_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
	struct nvme_memblaze_smart_log smart_log;
	char *desc = "Get Memblaze vendor specific additional smart log (optionally, "\
		      "for the specified namespace), and show it.";
	const char *namespace = "(optional) desired namespace";
	const char *raw = "dump output in binary format";
	struct nvme_dev *dev;
	struct config {
		__u32 namespace_id;
		bool  raw_binary;
	};
	int err;

	struct config cfg = {
		.namespace_id = NVME_NSID_ALL,
	};

	OPT_ARGS(opts) = {
		OPT_UINT("namespace-id", 'n', &cfg.namespace_id,  namespace),
		OPT_FLAG("raw-binary",   'b', &cfg.raw_binary,    raw),
		OPT_END()
	};

	err = parse_and_open(&dev, argc, argv, desc, opts);
	if (err)
		return err;

	err = nvme_get_nsid_log(dev_fd(dev), false, 0xca, cfg.namespace_id,
				sizeof(smart_log), &smart_log);
	if (!err) {
		if (!cfg.raw_binary)
			err = show_memblaze_smart_log(dev_fd(dev),
						      cfg.namespace_id,
						      dev->name, &smart_log);
		else
			d_raw((unsigned char *)&smart_log, sizeof(smart_log));
	}
	if (err > 0)
		nvme_show_status(err);

	dev_close(dev);
	return err;
}

static char *mb_feature_to_string(int feature)
{
    switch (feature) {
    case MB_FEAT_POWER_MGMT: return "Memblaze power management";
    case MB_FEAT_HIGH_LATENCY: return "Memblaze high latency log";
    case MB_FEAT_CLEAR_ERRORLOG: return "Memblaze clear error log";
    default: return "Unknown";
    }
}

static int mb_get_powermanager_status(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    const char *desc = "Get Memblaze power management ststus\n	(value 0 - 25w, 1 - 20w, 2 - 15w)";
    __u32 result;
    __u32 feature_id = MB_FEAT_POWER_MGMT;
    struct nvme_dev *dev;
    int err;

    OPT_ARGS(opts) = {
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
	    return err;

    struct nvme_get_features_args args = {
	    .args_size		= sizeof(args),
	    .fd			= dev_fd(dev),
	    .fid		= feature_id,
	    .nsid		= 0,
	    .sel		= 0,
	    .cdw11		= 0,
	    .uuidx		= 0,
	    .data_len		= 0,
	    .data		= NULL,
	    .timeout		= NVME_DEFAULT_IOCTL_TIMEOUT,
	    .result		= &result,
    };
    err = nvme_get_features(&args);
    if (err < 0) {
        perror("get-feature");
    }
    if (!err) {
        printf("get-feature:0x%02x (%s), %s value: %#08x\n", feature_id,
            mb_feature_to_string(feature_id),
            nvme_select_to_string(0), result);
    } else if (err > 0)
	    nvme_show_status(err);
    dev_close(dev);
    return err;
}

static int mb_set_powermanager_status(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    const char *desc = "Set Memblaze power management status\n	(value 0 - 25w, 1 - 20w, 2 - 15w)";
    const char *value = "new value of feature (required)";
    const char *save = "specifies that the controller shall save the attribute";
    struct nvme_dev *dev;
    __u32 result;
    int err;

    struct config {
        __u32 feature_id;
        __u32 value;
        bool  save;
    };

    struct config cfg = {
        .feature_id   = MB_FEAT_POWER_MGMT,
        .value        = 0,
        .save         = 0,
    };

    OPT_ARGS(opts) = {
        OPT_UINT("value",        'v', &cfg.value,        value),
        OPT_FLAG("save",         's', &cfg.save,         save),
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
	    return err;

    struct nvme_set_features_args args = {
	    .args_size		= sizeof(args),
	    .fd			= dev_fd(dev),
	    .fid		= cfg.feature_id,
	    .nsid		= 0,
	    .cdw11		= cfg.value,
	    .cdw12		= 0,
	    .save		= cfg.save,
	    .uuidx		= 0,
	    .cdw15		= 0,
	    .data_len		= 0,
	    .data		= NULL,
	    .timeout		= NVME_DEFAULT_IOCTL_TIMEOUT,
	    .result		= &result,
    };
    err = nvme_set_features(&args);
    if (err < 0) {
        perror("set-feature");
    }
    if (!err) {
        printf("set-feature:%02x (%s), value:%#08x\n", cfg.feature_id,
            mb_feature_to_string(cfg.feature_id), cfg.value);
    } else if (err > 0)
	nvme_show_status(err);

    dev_close(dev);
    return err;
}

#define P2MIN                                              (1)
#define P2MAX                                              (5000)
#define MB_FEAT_HIGH_LATENCY_VALUE_SHIFT                   (15)
static int mb_set_high_latency_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    const char *desc = "Set Memblaze high latency log\n"\
                       "	input parameter p1,p2\n"\
                       "	p1 value: 0 is disable, 1 is enable\n"\
                       "	p2 value: 1 .. 5000 ms";
    const char *param = "input parameters";
    int param1 = 0, param2 = 0;
    struct nvme_dev *dev;
    __u32 result;
    int err;

    struct config {
        __u32 feature_id;
        char * param;
        __u32 value;
    };

    struct config cfg = {
        .feature_id   = MB_FEAT_HIGH_LATENCY,
        .param        = "0,0",
        .value        = 0,
    };

    OPT_ARGS(opts) = {
        OPT_LIST("param",        'p', &cfg.param,       param),
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
	    return err;

    if (parse_params(cfg.param, 2, &param1, &param2)) {
        printf("setfeature: invalid formats %s\n", cfg.param);
        dev_close(dev);
        return EINVAL;
    }
    if ((param1 == 1) && (param2 < P2MIN || param2 > P2MAX)) {
        printf("setfeature: invalid high io latency threshold %d\n", param2);
        dev_close(dev);
        return EINVAL;
    }
    cfg.value = (param1 << MB_FEAT_HIGH_LATENCY_VALUE_SHIFT) | param2;

    struct nvme_set_features_args args = {
	    .args_size		= sizeof(args),
	    .fd			= dev_fd(dev),
	    .fid		= cfg.feature_id,
	    .nsid		= 0,
	    .cdw11		= cfg.value,
	    .cdw12		= 0,
	    .save		= false,
	    .uuidx		= 0,
	    .cdw15		= 0,
	    .data_len		= 0,
	    .data		= NULL,
	    .timeout		= NVME_DEFAULT_IOCTL_TIMEOUT,
	    .result		= &result,
    };
    err = nvme_set_features(&args);
    if (err < 0) {
        perror("set-feature");
    }
    if (!err) {
        printf("set-feature:0x%02X (%s), value:%#08x\n", cfg.feature_id,
            mb_feature_to_string(cfg.feature_id), cfg.value);
    } else if (err > 0)
	nvme_show_status(err);

    dev_close(dev);
    return err;
}

static int glp_high_latency_show_bar(FILE *fdi, int print)
{
    fPRINT_PARAM1("Memblaze High Latency Log\n");
    fPRINT_PARAM1("---------------------------------------------------------------------------------------------\n");
    fPRINT_PARAM1("Timestamp                        Type    QID    CID    NSID     StartLBA      NumLBA   Latency\n");
    fPRINT_PARAM1("---------------------------------------------------------------------------------------------\n");
    return 0;
}

/* High latency log page definiton
 * Total 32 bytes
 */
typedef struct
{
    __u8 port;
    __u8 revision;
    __u16 rsvd;
    __u8 opcode;
    __u8 sqe;
    __u16 cid;
    __u32 nsid;
    __u32 latency;
    __u64 sLBA;
    __u16 numLBA;
    __u16 timestampH;
    __u32 timestampL;
} log_page_high_latency_t; /* total 32 bytes */

static int find_deadbeef(char *buf)
{
    if (((*(buf + 0) & 0xff) == 0xef) && ((*(buf + 1) & 0xff) == 0xbe) && \
            ((*(buf + 2) & 0xff) == 0xad) && ((*(buf + 3) & 0xff) == 0xde))
    {
        return 1;
    }
    return 0;
}

#define TIME_STR_SIZE                                      (44)
static int glp_high_latency(FILE *fdi, char *buf, int buflen, int print)
{
    log_page_high_latency_t *logEntry;
    char string[TIME_STR_SIZE];
    int i, entrySize;
    __u64 timestamp;
    time_t tt = 0;
    struct tm *t = NULL;
    int millisec = 0;

    if (find_deadbeef(buf)) return 0;

    entrySize = sizeof(log_page_high_latency_t);
    for (i = 0; i < buflen; i += entrySize)
    {
        logEntry = (log_page_high_latency_t *)(buf + i);

        if (logEntry->latency == 0 && logEntry->revision == 0)
        {
            return 1;
        }

        if (0 == logEntry->timestampH)  //  generate host time string
        {
            snprintf(string, sizeof(string), "%d", logEntry->timestampL);
        }
        else  //  sort
        {
            timestamp = logEntry->timestampH - 1;
            timestamp = timestamp << 32;
            timestamp += logEntry->timestampL;
            tt = timestamp / 1000;
            millisec = timestamp % 1000;
            t = gmtime(&tt);
            snprintf(string, sizeof(string), "%4d%02d%02d--%02d:%02d:%02d.%03d UTC",
                     1900 + t->tm_year, 1 + t->tm_mon, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec, millisec);
        }

	if (fdi) {
		fprintf(fdi, "%-32s %-7x %-6x %-6x %-8x %4x%08x  %-8x %-d\n",
			string, logEntry->opcode, logEntry->sqe,
			logEntry->cid, logEntry->nsid,
			(__u32)(logEntry->sLBA >> 32),
			(__u32)logEntry->sLBA, logEntry->numLBA,
			logEntry->latency);
	}
        if (print)
        {
            printf("%-32s %-7x %-6x %-6x %-8x %4x%08x  %-8x %-d\n",
                   string, logEntry->opcode, logEntry->sqe, logEntry->cid, logEntry->nsid,
                   (__u32)(logEntry->sLBA >> 32), (__u32)logEntry->sLBA, logEntry->numLBA, logEntry->latency);
        }
    }
    return 1;
}

static int mb_high_latency_log_print(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    const char *desc = "Get Memblaze high latency log";
    char buf[LOG_PAGE_SIZE];
    struct nvme_dev *dev;
    FILE *fdi = NULL;
    int err;

    OPT_ARGS(opts) = {
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
	    return err;

    fdi = fopen(FID_C3_LOG_FILENAME, "w+");

    glp_high_latency_show_bar(fdi, DO_PRINT_FLAG);
    err = nvme_get_log_simple(dev_fd(dev), GLP_ID_VU_GET_HIGH_LATENCY_LOG,
			      sizeof(buf), &buf);

    while (1) {
        if (!glp_high_latency(fdi, buf, LOG_PAGE_SIZE, DO_PRINT_FLAG)) break;
        err = nvme_get_log_simple(dev_fd(dev), GLP_ID_VU_GET_HIGH_LATENCY_LOG,
				  sizeof(buf), &buf);
        if ( err) {
	    nvme_show_status(err);
            break;
        }
    }

    if (NULL != fdi) fclose(fdi);
    dev_close(dev);
    return err;
}


static int memblaze_fw_commit(int fd, int select)
{
	struct nvme_passthru_cmd cmd = {
		.opcode		= nvme_admin_fw_commit,
		.cdw10		= 8,
		.cdw12      = select,
	};

	return nvme_submit_admin_passthru(fd, &cmd, NULL);
}

static int mb_selective_download(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
	const char *desc =
		"This performs a selective firmware download, which allows the user to "
		"select which firmware binary to update for 9200 devices. This requires a power cycle once the "
		"update completes. The options available are: \n\n"
		"OOB - This updates the OOB and main firmware\n"
		"EEP - This updates the eeprom and main firmware\n"
		"ALL - This updates the eeprom, OOB, and main firmware";
	const char *fw = "firmware file (required)";
	const char *select = "FW Select (e.g., --select=OOB, EEP, ALL)";
	int xfer = 4096;
	void *fw_buf;
	int selectNo,fw_fd,fw_size,err,offset = 0;
	struct nvme_dev *dev;
	struct stat sb;
	int i;

	struct config {
		char  *fw;
		char  *select;
	};

	struct config cfg = {
		.fw     = "",
		.select = "\0",
	};

	OPT_ARGS(opts) = {
		OPT_STRING("fw", 'f', "FILE", &cfg.fw, fw),
		OPT_STRING("select", 's', "flag", &cfg.select, select),
		OPT_END()
	};

	err = parse_and_open(&dev, argc, argv, desc, opts);
	if (err)
		return err;

	if (strlen(cfg.select) != 3) {
		fprintf(stderr, "Invalid select flag\n");
		err = EINVAL;
		goto out;
	}

	for (i = 0; i < 3; i++) {
		cfg.select[i] = toupper(cfg.select[i]);
	}

	if (strncmp(cfg.select,"OOB", 3) == 0) {
		selectNo = 18;
	} else if (strncmp(cfg.select,"EEP", 3) == 0) {
		selectNo = 10;
	} else if (strncmp(cfg.select,"ALL", 3) == 0) {
		selectNo = 26;
	} else {
		fprintf(stderr, "Invalid select flag\n");
		err = EINVAL;
		goto out;
	}

	fw_fd = open(cfg.fw, O_RDONLY);
	if (fw_fd < 0) {
		fprintf(stderr, "no firmware file provided\n");
		err = EINVAL;
		goto out;
	}

	err = fstat(fw_fd, &sb);
	if (err < 0) {
		perror("fstat");
		err = errno;
		goto out_close;
	}

	fw_size = sb.st_size;
	if (fw_size & 0x3) {
		fprintf(stderr, "Invalid size:%d for f/w image\n", fw_size);
		err = EINVAL;
		goto out_close;
	}

	if (posix_memalign(&fw_buf, getpagesize(), fw_size)) {
		fprintf(stderr, "No memory for f/w size:%d\n", fw_size);
		err = ENOMEM;
		goto out_close;
	}

	if (read(fw_fd, fw_buf, fw_size) != ((ssize_t)(fw_size))) {
		err = errno;
		goto out_free;
	}

	while (fw_size > 0) {
		xfer = min(xfer, fw_size);

		struct nvme_fw_download_args args = {
			.args_size	= sizeof(args),
			.fd		= dev_fd(dev),
			.offset		= offset,
			.data_len	= xfer,
			.data		= fw_buf,
			.timeout	= NVME_DEFAULT_IOCTL_TIMEOUT,
			.result		= NULL,
		};
		err = nvme_fw_download(&args);
		if (err < 0) {
			perror("fw-download");
			goto out_free;
		} else if (err != 0) {
			nvme_show_status(err);
			goto out_free;
		}
		fw_buf     += xfer;
		fw_size    -= xfer;
		offset += xfer;
	}

	err = memblaze_fw_commit(dev_fd(dev), selectNo);

	if(err == 0x10B || err == 0x20B) {
		err = 0;
		fprintf(stderr, "Update successful! Please power cycle for changes to take effect\n");
	}

out_free:
	free(fw_buf);
out_close:
	close(fw_fd);
out:
	dev_close(dev);
	return err;
}

static void ioLatencyHistogramOutput(FILE *fd, int index, int start, int end, char *unit0,
                                     char *unit1, unsigned int *pHistogram, int print)
{
    int len;
    char string[64], subString0[12], subString1[12];

    snprintf(subString0, sizeof(subString0), "%d%s", start, unit0);
    if (end != 0x7FFFFFFF)
        snprintf(subString1, sizeof(subString1), "%d%s", end, unit1);
    else
        snprintf(subString1, sizeof(subString1), "%s", "+INF");
    len = snprintf(string, sizeof(string), "%-11d %-11s %-11s %-11u\n",
		   index, subString0, subString1,
                   pHistogram[index]);
    fwrite(string, 1, len, fd);
    if (print)
        printf("%s", string);
}

int io_latency_histogram(char *file, char *buf, int print, int logid)
{
    FILE *fdi = fopen(file, "w+");
    int i, index;
    char unit[2][3];
    unsigned int *revision = (unsigned int *)buf;

    if (logid == GLP_ID_VU_GET_READ_LATENCY_HISTOGRAM)
    {
        fPRINT_PARAM1("Memblaze IO Read Command Latency Histogram\n");
    }
    else if (logid == GLP_ID_VU_GET_WRITE_LATENCY_HISTOGRAM)
    {
        fPRINT_PARAM1("Memblaze IO Write Command Latency Histogram\n");
    }
    fPRINT_PARAM2("Major Revision : %d\n", revision[1]);
    fPRINT_PARAM2("Minor Revision : %d\n", revision[0]);
    buf += 8;

    if (revision[1] == 1 && revision[0] == 0)
    {
        fPRINT_PARAM1("--------------------------------------------------\n");
        fPRINT_PARAM1("Bucket      Start       End         Value         \n");
        fPRINT_PARAM1("--------------------------------------------------\n");
        index = 0;
        strcpy(unit[0], "us");
        strcpy(unit[1], "us");
        for (i = 0; i < 32; i++, index++)
        {
            if (i == 31)
            {
                strcpy(unit[1], "ms");
                ioLatencyHistogramOutput(fdi, index, i * 32, 1, unit[0], unit[1], (unsigned int *)buf, print);
            }
            else
            {
                ioLatencyHistogramOutput(fdi, index, i * 32, (i + 1) * 32, unit[0], unit[1], (unsigned int *)buf,
                                         print);
            }
        }

        strcpy(unit[0], "ms");
        strcpy(unit[1], "ms");
        for (i = 1; i < 32; i++, index++)
        {
            ioLatencyHistogramOutput(fdi, index, i, i + 1, unit[0], unit[1], (unsigned int *)buf, print);
        }

        for (i = 1; i < 32; i++, index++)
        {
            if (i == 31)
            {
                strcpy(unit[1], "s");
                ioLatencyHistogramOutput(fdi, index, i * 32, 1, unit[0], unit[1], (unsigned int *)buf, print);
            }
            else
            {
                ioLatencyHistogramOutput(fdi, index, i * 32, (i + 1) * 32, unit[0], unit[1], (unsigned int *)buf,
                                         print);
            }
        }

        strcpy(unit[0], "s");
        strcpy(unit[1], "s");
        for (i = 1; i < 4; i++, index++)
        {
            ioLatencyHistogramOutput(fdi, index, i, i + 1, unit[0], unit[1], (unsigned int *)buf, print);
        }

        ioLatencyHistogramOutput(fdi, index, i, 0x7FFFFFFF, unit[0], unit[1], (unsigned int *)buf, print);
    }
    else
    {
        fPRINT_PARAM1("Unsupported io latency histogram revision\n");
    }

    if (fdi)
	    fclose(fdi);
    return 1;
}

static int mb_lat_stats_log_print(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    char stats[LOG_PAGE_SIZE];
    char f1[] = FID_C1_LOG_FILENAME;
    char f2[] = FID_C2_LOG_FILENAME;
    struct nvme_dev *dev;
    int err;

    const char *desc = "Get Latency Statistics log and show it.";
    const char *write = "Get write statistics (read default)";

    struct config {
        bool  write;
    };
    struct config cfg = {
        .write = 0,
    };

    OPT_ARGS(opts) = {
        OPT_FLAG("write",      'w', &cfg.write,      write),
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
	    return err;

    err = nvme_get_log_simple(dev_fd(dev), cfg.write ? 0xc2 : 0xc1,
			      sizeof(stats), &stats);
    if (!err)
        io_latency_histogram(cfg.write ? f2 : f1, stats, DO_PRINT_FLAG,
         cfg.write ? GLP_ID_VU_GET_WRITE_LATENCY_HISTOGRAM : GLP_ID_VU_GET_READ_LATENCY_HISTOGRAM);
    else
	nvme_show_status(err);

    dev_close(dev);
    return err;
}

#define OP         0xFC
#define FID        0x68
static int memblaze_clear_error_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
    char *desc = "Clear Memblaze devices error log.";
    struct nvme_dev *dev;
    int err;

    //const char *value = "new value of feature (required)";
    //const char *save = "specifies that the controller shall save the attribute";
    __u32 result;

    struct config {
        __u32 feature_id;
        __u32 value;
        int   save;
    };

    struct config cfg = {
        .feature_id   = 0xf7,
        .value        = 0x534d0001,
        .save         = 0,
    };

    OPT_ARGS(opts) = {
        OPT_END()
    };

    err = parse_and_open(&dev, argc, argv, desc, opts);
    if (err)
        return err;

    struct nvme_set_features_args args = {
        .args_size      = sizeof(args),
        .fd             = dev_fd(dev),
        .fid            = cfg.feature_id,
        .nsid           = 0,
        .cdw11          = cfg.value,
        .cdw12          = 0,
        .save           = cfg.save,
        .uuidx          = 0,
        .cdw15          = 0,
        .data_len       = 0,
        .data           = NULL,
        .timeout        = NVME_DEFAULT_IOCTL_TIMEOUT,
        .result         = &result,
    };
    err = nvme_set_features(&args);
    if (err < 0) {
        perror("set-feature");
    }
    if (!err) {
        printf("set-feature:%02x (%s), value:%#08x\n", cfg.feature_id, mb_feature_to_string(cfg.feature_id), cfg.value);
    } else if (err > 0)
        nvme_show_status(err);

/*
	struct nvme_admin_cmd admin_cmd = {
		.opcode		= OP,
		.cdw10		= FID,
	};

	err = nvme_submit_admin_passthru(fd, &admin_cmd);

	if (!err) {
		printf("OP(0x%2X) FID(0x%2X) Clear error log success.\n", OP, FID);
	} else {
		printf("NVMe Status:%s(%x)\n", nvme_status_to_string(err), err);
	};
*/
    dev_close(dev);
    return err;
}

static int mb_set_lat_stats(int argc, char **argv,
		struct command *command, struct plugin *plugin)
{
	const char *desc = (
			"Enable/Disable Latency Statistics Tracking.\n"
			"No argument prints current status.");
	const char *enable_desc = "Enable LST";
	const char *disable_desc = "Disable LST";
	const __u32 nsid = 0;
	const __u8 fid = 0xe2;
	const __u8 sel = 0;
	const __u32 cdw11 = 0x0;
	const __u32 cdw12 = 0x0;
	const __u32 data_len = 32;
	const __u32 save = 0;
	struct nvme_dev *dev;
	void *buf = NULL;
	__u32 result;
	int err;

	struct config {
		bool enable, disable;
	};

	struct config cfg = {
		.enable = false,
		.disable = false,
	};

	const struct argconfig_commandline_options command_line_options[] = {
		{"enable", 'e', "", CFG_FLAG, &cfg.enable, no_argument, enable_desc},
		{"disable", 'd', "", CFG_FLAG, &cfg.disable, no_argument, disable_desc},
		{NULL}
	};

	err = parse_and_open(&dev, argc, argv, desc, command_line_options);

	enum Option {
		None = -1,
		True = 1,
		False = 0,
	};
	enum Option option = None;

	if (cfg.enable && cfg.disable)
		printf("Cannot enable and disable simultaneously.");
	else if (cfg.enable || cfg.disable)
		option = cfg.enable;

	struct nvme_get_features_args args_get = {
		.args_size	= sizeof(args_get),
		.fd		= dev_fd(dev),
		.fid		= fid,
		.nsid		= nsid,
		.sel		= sel,
		.cdw11		= cdw11,
		.uuidx		= 0,
		.data_len	= data_len,
		.data		= buf,
		.timeout	= NVME_DEFAULT_IOCTL_TIMEOUT,
		.result		= &result,
	};

	struct nvme_set_features_args args_set = {
		.args_size	= sizeof(args_set),
		.fd		= dev_fd(dev),
		.fid		= fid,
		.nsid		= nsid,
		.cdw11		= option,
		.cdw12		= cdw12,
		.save		= save,
		.uuidx		= 0,
		.cdw15		= 0,
		.data_len	= data_len,
		.data		= buf,
		.timeout	= NVME_DEFAULT_IOCTL_TIMEOUT,
		.result		= &result,
	};

	if (err)
		return err;
	switch (option) {
	case None:
		err = nvme_get_features(&args_get);
		if (!err) {
			printf(
				"Latency Statistics Tracking (FID 0x%X) is currently (%i).\n",
				fid, result);
		} else {
			printf("Could not read feature id 0xE2.\n");
			dev_close(dev);
			return err;
		}
		break;
	case True:
	case False:
	        err = nvme_set_features(&args_set);
		if (err > 0) {
			nvme_show_status(err);
		} else if (err < 0) {
			perror("Enable latency tracking");
			fprintf(stderr, "Command failed while parsing.\n");
		} else {
			printf("Successfully set enable bit for FID (0x%X) to %i.\n",
				0xe2, option);
		}
		break;
	default:
		printf("%d not supported.\n", option);
		err = EINVAL;
	}
	dev_close(dev);
	return err;
}

