8322 nl: misleading-indentation

[unleashed/tickless.git] / usr / src / cmd / picl / plugins / sun4u / mpxu / frudr / piclfrudr.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#include <stdio.h>
#include <stddef.h>
#include <syslog.h>
#include <strings.h>
#include <unistd.h>
#include <libintl.h>
#include <stdlib.h>
#include <ctype.h>
#include <picl.h>
#include <picltree.h>
#include <picld_pluginutil.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/sysevent/dr.h>
#include <pthread.h>
#include <libdevinfo.h>
#include <limits.h>
#include <sys/systeminfo.h>
#include <sys/envmon.h>
#include <i2c_gpio.h>
#include "libdevice.h"
#include "picldefs.h"
#include <sys/raidioctl.h>
#include <sys/param.h>
#include <sys/epic.h>

/*
 * Plugin registration entry points
 */
static void     piclfrudr_register(void);
static void     piclfrudr_init(void);
static void     piclfrudr_fini(void);
static void     rmc_state_event(void);
static void     seattle_setleds(void);
static void     boston_set_frontleds(const char *, int);
static void     boston_set_rearleds(const char *, int);

#pragma init(piclfrudr_register)

static picld_plugin_reg_t  my_reg_info = {
        PICLD_PLUGIN_VERSION_1,
        PICLD_PLUGIN_CRITICAL,
        "SUNW_MPXU_frudr",
        piclfrudr_init,
        piclfrudr_fini,
};

/*
 * Log message texts
 */
#define EM_THREAD_CREATE_FAILED gettext("piclfrudr: pthread_create failed: %s")
#define DELETE_PROP_FAIL gettext("ptree_delete_prop failed: %d")
#define EM_DI_INIT_FAIL gettext("piclfrudr: di_init failed: %s")
#define PROPINFO_FAIL gettext("ptree_init_propinfo %s failed: %d")
#define ADD_NODE_FAIL gettext("ptree_create_and_add_node %s failed: %d")
#define ADD_TBL_ENTRY_FAIL gettext("piclfrudr: cannot add entry to table")
#define EM_POLL_FAIL gettext("piclfrudr: poll() failed: %s")
#define ADD_PROP_FAIL gettext("ptree_create_and_add_prop %s failed: %d")
#define EM_MUTEX_FAIL gettext("piclfrudr: pthread_mutex_lock returned: %s")
#define EM_UNK_FRU gettext("piclfrudr: Fru removed event for unknown node")
#define PARSE_CONF_FAIL gettext("parse config file %s failed")
#define EM_NO_SC_DEV gettext("piclfrudr: failed to locate SC device node")
#define EM_NO_SYSINFO gettext("piclfrudr: failed to get SC sysinfo: %s")

/*
 * PICL property values
 */
#define PICL_PROPVAL_ON         "ON"
#define PICL_PROPVAL_OFF        "OFF"

/*
 * Local defines
 */
#define SEEPROM_DRIVER_NAME     "seeprom"
#define FRUTREE_PATH            "/frutree"
#define CHASSIS_LOC_PATH        "/frutree/chassis/%s"
#define SYS_BOARD_PATH          "/frutree/chassis/MB/system-board/%s"
#define SEATTLE1U_HDDBP_PATH    \
        "/frutree/chassis/MB/system-board/HDDBP/disk-backplane-1/%s"
#define SEATTLE2U_HDDBP_PATH    \
        "/frutree/chassis/MB/system-board/HDDBP/disk-backplane-3/%s"
#define BOSTON_HDDBP_PATH       \
        "/frutree/chassis/MB/system-board/HDDCNTRL/disk-controller/HDDBP" \
        "/disk-backplane-8/%s"

#define CONFFILE_PREFIX         "fru_"
#define CONFFILE_SUFFIX         ".conf"
#define CONFFILE_FRUTREE        "piclfrutree.conf"
#define PS_NAME                 "PS"
#define PS_NAME_LEN             2
#define PS_FRU_NAME             "power-supply"
#define PS_PLATFORM_NAME        "power-supply-fru-prom"
#define DISK_NAME               "HDD"
#define DISK_NAME_LEN           3
#define DISK_FRU_NAME           "disk"
#define SCC_NAME                "SCC"
#define SCC_NAME_LEN            3
#define SCC_FRU_NAME            "scc"
#define RMC_NAME                "SC"
#define RMC_NAME_LEN            2
#define RMC_FRU_NAME            "sc"
#define FT_NAME                 "FT"
#define FT_NAME_LEN             2
#define F0_NAME                 "F0"
#define F0_NAME_LEN             2
#define F1_NAME                 "F1"
#define F1_NAME_LEN             2
#define FT_FRU_NAME             "fan-tray"
#define FT_FRU_NAME_LEN 8
#define FT_ID_BUFSZ             (FT_NAME_LEN + 2)
#define DEV_PREFIX              "/devices"
#define ENXS_FRONT_SRVC_LED     0x20
#define ENXS_FRONT_ACT_LED      0x10
#define ENXS_REAR_SRVC_LED      0x20
#define ENXS_REAR_ACT_LED       0x10
#define ENTS_SRVC_LED           0x20
#define ENTS_ACT_LED            0x10
#define V440_SRVC_LED           0x2
#define V440_ACT_LED            0x1
#define BOSTON_FRONT_SRVC_LED   0x2
#define BOSTON_FRONT_ACT_LED    0x4
#define BOSTON_FRONT_CLEAR_DIR  0x0
#define BOSTON_FRONT_CLEAR_POL  0x0
#define BOSTON_FRONT_LED_MASK   0xffffffff
#define BOSTON_REAR_SRVC_LED    0x8000
#define BOSTON_REAR_ACT_LED     0x2000
#define BOSTON_REAR_CLEAR_POL   0x0000
#define BOSTON_REAR_LED_MASK    0xe000

/*
 * PSU defines
 */
#define PSU_I2C_BUS_DEV "/devices/pci@1e,600000/isa@7/i2c@0,320:devctl"
#define PSU_DEV \
        "/devices/pci@1e,600000/isa@7/i2c@0,320/power-supply-fru-prom@0,%x"
#define PSU_PLATFORM    "/platform/pci@1e,600000/isa@7/i2c@0,320"
#define PS0_ADDR ((sys_platform == PLAT_CHALUPA19) ? 0xc0 : 0xb0)
#define PS1_ADDR ((sys_platform == PLAT_CHALUPA19) ? 0xc2 : 0xa4)
#define PS2_ADDR 0x70
#define PS3_ADDR 0x72
#define PS0_UNITADDR    ((sys_platform == PLAT_CHALUPA19) ? "0,c0" : "0,b0")
#define PS1_UNITADDR    ((sys_platform == PLAT_CHALUPA19) ? "0,c2" : "0,a4")
#define PS2_UNITADDR    "0,70"
#define PS3_UNITADDR    "0,72"
#define PS0_NAME "PS0"
#define PS1_NAME "PS1"
#define PS2_NAME "PS2"
#define PS3_NAME "PS3"
#define PSU0_NAME "PSU0"
#define PSU1_NAME "PSU1"
#define PSU2_NAME "PSU2"
#define PSU3_NAME "PSU3"
#define PS_DEVICE_NAME "power-supply-fru-prom"
#define PSU_COMPATIBLE  "i2c-at24c64"

/*
 * Seattle/Boston PSU defines
 */
#define SEATTLE_PSU_I2C_BUS_DEV "/devices/i2c@1f,530000:devctl"
#define SEATTLE_PSU_DEV \
        "/devices/i2c@1f,530000/power-supply-fru-prom@0,%x"
#define SEATTLE_PSU_PLATFORM    "/platform/i2c@1f,530000"
#define SEATTLE_PS0_ADDR        0x6c
#define SEATTLE_PS1_ADDR        0x6e
#define SEATTLE_PS0_UNITADDR    "0,6c"
#define SEATTLE_PS1_UNITADDR    "0,6e"
#define SEATTLE_PSU_COMPATIBLE  "i2c-at34c02"
#define BOSTON_PSU_I2C_BUS_DEV  "/devices/i2c@1f,520000:devctl"
#define BOSTON_PSU_DEV  \
        "/devices/i2c@1f,520000/power-supply-fru-prom@0,%x"
#define BOSTON_PSU_PLATFORM     "/platform/i2c@1f,520000"
#define BOSTON_PS0_ADDR         0x24
#define BOSTON_PS1_ADDR         0x32
#define BOSTON_PS2_ADDR         0x52
#define BOSTON_PS3_ADDR         0x72
#define BOSTON_PS0_UNITADDR     "0,24"
#define BOSTON_PS1_UNITADDR     "0,32"
#define BOSTON_PS2_UNITADDR     "0,52"
#define BOSTON_PS3_UNITADDR     "0,72"
#define BOSTON_PSU_COMPATIBLE   "i2c-at34c02"

/*
 * Seattle fan-tray paths
 */
#define SEATTLE_FCB0_1U \
        "/frutree/chassis/MB/system-board/FIOB/front-io-board-1" \
        "/FCB0/fan-connector-board/%s"
#define SEATTLE_FCB1_1U \
        "/frutree/chassis/MB/system-board/FIOB/front-io-board-1" \
        "/FCB1/fan-connector-board/%s"
#define SEATTLE_PDB_1U \
        "/frutree/chassis/PDB/power-distribution-board/%s"
#define SEATTLE_FCB0_2U \
        "/frutree/chassis/MB/system-board/FIOB/front-io-board-2" \
        "/FCB0/fan-connector-board/%s"
#define SEATTLE_FCB1_2U \
        "/frutree/chassis/MB/system-board/FIOB/front-io-board-2" \
        "/FCB1/fan-connector-board/%s"
#define SEATTLE_PDB_2U \
        "/frutree/chassis/PDB/power-distribution-board" \
        "/HDDFB/fan-connector-board/%s"

/*
 * disk defines
 */
#define REMOK_LED "OK2RM"
#define FAULT_LED "SERVICE"
#define PLATFORMLEN 9
#define N_DISKS 8
#define N_CHALUPA_DISKS 4
#define N_ENTS_DISKS 8
#define N_MPXU_DISKS 4
#define N_EN19_DISKS 2
#define DISK_POLL_TIME  5000
/* For V440 RAID policy */
#define V440_DISK_DEVCTL "/devices/pci@1f,700000/scsi@2:devctl"

/*
 * Seattle/Boston disk defines
 */
#define N_SEATTLE1U_DISKS       2
#define N_SEATTLE2U_DISKS       4
#define N_BOSTON_DISKS          8
#define SEATTLE_DISK_DEVCTL \
        "/devices/pci@1e,600000/pci@0/pci@a/pci@0/pci@8/scsi@1:devctl"
#define BOSTON_DISK_DEVCTL_1068X \
        "/devices/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1:devctl"
#define BOSTON_DISK_DEVCTL_1068E \
        "/devices/pci@1e,600000/pci@0/pci@2/scsi@0:devctl"

/*
 * led defines
 */
#define ENXS_LED_DIR    "/devices/pci@1e,600000/isa@7/i2c@0,320/"
#define ENXS_FRONT_LEDS "gpio@0,70:"
#define ENXS_REAR_LEDS  ENXS_LED_DIR "gpio@0,44:port_1"

#define ENTS_LED_DIR    "/devices/pci@1e,600000/isa@7/i2c@0,320/"
#define ENTS_LEDS       "gpio@0,70:"

#define V440_LED_DIR    "/devices/pci@1e,600000/isa@7/i2c@0,320/"
#define V440_LED_PATH   V440_LED_DIR "gpio@0,48:port_0"

/*
 * Seattle/Boston led defines
 */
#define SEATTLE_LED_DEV "/devices/ebus@1f,464000/env-monitor@3,0:env-monitor0"
#define BOSTON_LED_DIR  "/devices/i2c@1f,520000/"
#define BOSTON_FRONT_LED_PATH   BOSTON_LED_DIR "gpio@0,3a:port_0"
#define BOSTON_REAR_LED_PATH    BOSTON_LED_DIR "hardware-monitor@0,5c:adm1026"

/*
 * Seattle/Boston USB defines
 */
#define MAX_USB_PORTS           4
#define USB_CONF_FILE_NAME      "usb-a-"

typedef struct id_props {
        envmon_handle_t envhandle;
        picl_prophdl_t  volprop;
} id_props_t;

typedef struct idp_lkup {
        int             maxnum;         /* entries in array */
        int             num;            /* entries in use */
        id_props_t      idp[1];
} idp_lkup_t;

/*
 * table for mapping RMC handles to volatile property handles
 */
static idp_lkup_t       *idprop = NULL;

/*
 * path names to system-controller device and fault led gpio
 */
static char             *sc_device_name = NULL;
static char             *bezel_leds = NULL;

/*
 * disk data
 */
static int disk_ready[N_DISKS];
static char *disk_name[N_DISKS] = { "HDD0", "HDD1", "HDD2", "HDD3",
                                        "HDD4", "HDD5", "HDD6", "HDD7" };
static volatile boolean_t       disk_leds_thread_ack = B_FALSE;
static volatile boolean_t       disk_leds_thread_running = B_FALSE;
static pthread_t                ledsthr_tid;
static pthread_attr_t           ledsthr_attr;
static boolean_t                ledsthr_created = B_FALSE;
static boolean_t                g_mutex_init = B_FALSE;
static pthread_cond_t           g_cv;
static pthread_cond_t           g_cv_ack;
static pthread_mutex_t          g_mutex;
static volatile boolean_t       g_finish_now = B_FALSE;

/*
 * Boston platform-specific flag which tells us if we are using
 * a LSI 1068X disk controller (0) or a LSI 1068E (1).
 */
static int boston_1068e_flag = 0;

/*
 * static strings
 */
static const char               str_devfs_path[] = "devfs-path";

/*
 * OperationalStatus property values
 */
static const char               str_opst_present[] = "present";
static const char               str_opst_ok[] = "okay";
static const char               str_opst_faulty[] = "faulty";
static const char               str_opst_download[] = "download";
static const char               str_opst_unknown[] = "unknown";
static size_t                   max_opst_len = sizeof (str_opst_download);

/*
 * forward reference
 */
static void opst_init(void);
static void add_op_status_by_name(const char *name, const char *child_name,
    picl_prophdl_t *prophdl_p);
static void add_op_status_to_node(picl_nodehdl_t nodeh,
    picl_prophdl_t *prophdl_p);
static int read_vol_data(ptree_rarg_t *r_arg, void *buf);
static int find_picl_handle(picl_prophdl_t proph);
static void disk_leds_init(void);
static void disk_leds_fini(void);
static void *disk_leds_thread(void *args);
static picl_nodehdl_t find_child_by_name(picl_nodehdl_t parh, char *name);
static void post_frudr_event(char *ename, picl_nodehdl_t parenth,
    picl_nodehdl_t fruh);
static int add_prop_ref(picl_nodehdl_t nodeh, picl_nodehdl_t value, char *name);
static void remove_fru_parents(picl_nodehdl_t fruh);
static int get_node_by_class(picl_nodehdl_t nodeh, const char *classname,
    picl_nodehdl_t *foundnodeh);
static int get_sys_controller_node(picl_nodehdl_t *nodeh);
static char *create_sys_controller_pathname(picl_nodehdl_t sysconh);
static char *create_bezel_leds_pathname(const char *dirpath,
    const char *devname);
static void frudr_evhandler(const char *ename, const void *earg,
    size_t size, void *cookie);
static void fru_add_handler(const char *ename, const void *earg,
    size_t size, void *cookie);
static void frutree_evhandler(const char *ename, const void *earg,
        size_t size, void *cookie);
static int create_table(picl_nodehdl_t fruhdl, picl_prophdl_t *tblhdlp,
    char *tbl_name);
static int create_table_entry(picl_prophdl_t tblhdl,
    picl_nodehdl_t refhdl, char *class);
static int create_i2c_node(char *ap_id);
static void delete_i2c_node(char *ap_id);
static int set_led(char *name, char *ptr, char *value);
static int ps_name_to_addr(char *name);
static char *ps_name_to_unitaddr(char *name);
static char *ps_apid_to_nodename(char *apid);
static void add_op_status(envmon_hpu_t *hpu, int *index);
static void get_fantray_path(char *ap_id, char *path, int bufsz);

#define sprintf_buf2(buf, a1, a2) (void) snprintf(buf, sizeof (buf), a1, a2)

/*
 * Because this plugin is shared across different platforms, we need to
 * distinguish for certain functionality
 */
#define PLAT_UNKNOWN    (-1)
#define PLAT_ENXS       0
#define PLAT_ENTS       1
#define PLAT_CHALUPA    2
#define PLAT_EN19       3
#define PLAT_CHALUPA19  4
#define PLAT_SALSA19    5
#define PLAT_SEATTLE1U  6
#define PLAT_SEATTLE2U  7
#define PLAT_BOSTON     8

static int sys_platform;

static void
get_platform()
{
        char    platform[64];
        (void) sysinfo(SI_PLATFORM, platform, sizeof (platform));
        if (strcmp(platform, "SUNW,Sun-Fire-V250") == 0)
                sys_platform = PLAT_ENTS;
        else if (strcmp(platform, "SUNW,Sun-Fire-V440") == 0)
                sys_platform = PLAT_CHALUPA;
        else if (strcmp(platform, "SUNW,Sun-Fire-V210") == 0)
                sys_platform = PLAT_ENXS;
        else if (strcmp(platform, "SUNW,Sun-Fire-V240") == 0)
                sys_platform = PLAT_ENXS;
        else if (strcmp(platform, "SUNW,Netra-240") == 0)
                sys_platform = PLAT_EN19;
        else if (strcmp(platform, "SUNW,Netra-210") == 0)
                sys_platform = PLAT_SALSA19;
        else if (strcmp(platform, "SUNW,Netra-440") == 0)
                sys_platform = PLAT_CHALUPA19;
        else if (strcmp(platform, "SUNW,Sun-Fire-V215") == 0)
                sys_platform = PLAT_SEATTLE1U;
        else if (strcmp(platform, "SUNW,Sun-Fire-V245") == 0)
                sys_platform = PLAT_SEATTLE2U;
        else if (strcmp(platform, "SUNW,Sun-Fire-V445") == 0)
                sys_platform = PLAT_BOSTON;
        else
                sys_platform = PLAT_UNKNOWN;
}

/*
 * This function is executed as part of .init when the plugin is
 * dlopen()ed
 */
static void
piclfrudr_register(void)
{
        (void) picld_plugin_register(&my_reg_info);
}

/*
 * This function is the init entry point of the plugin.
 * It initializes the /frutree tree
 */
static void
piclfrudr_init(void)
{
        picl_nodehdl_t  sc_nodeh;
        picl_nodehdl_t  locationh;
        picl_nodehdl_t  childh;
        char namebuf[PATH_MAX];

        get_platform();

        if (sc_device_name != NULL) {
                free(sc_device_name);   /* must have reen restarted */
                sc_device_name = NULL;
        }

        if ((get_sys_controller_node(&sc_nodeh) != PICL_SUCCESS) ||
            ((sc_device_name = create_sys_controller_pathname(sc_nodeh)) ==
            NULL))
                syslog(LOG_ERR, EM_NO_SC_DEV);

        opst_init();
        disk_leds_init();

        (void) ptree_register_handler(PICLEVENT_DR_AP_STATE_CHANGE,
            frudr_evhandler, NULL);
        (void) ptree_register_handler(PICL_FRU_ADDED, fru_add_handler, NULL);
        (void) ptree_register_handler(PICLEVENT_SYSEVENT_DEVICE_ADDED,
            frutree_evhandler, NULL);

        /*
         * There is a window of opportunity for the RMC to deliver an event
         * indicating a newly operable state just before we are listening for
         * it. In this case, envmon will have missed setting up /platform
         * and won't get a signal from frudr. So send it a PICL_FRU_ADDED just
         * in case.
         */

        if ((sys_platform == PLAT_CHALUPA) ||
            (sys_platform == PLAT_CHALUPA19)) {
                sprintf_buf2(namebuf, CHASSIS_LOC_PATH, RMC_NAME);
        } else {
                sprintf_buf2(namebuf, SYS_BOARD_PATH, RMC_NAME);
        }

        if (ptree_get_node_by_path(namebuf, &locationh) != PICL_SUCCESS)
                return;
        if (ptree_get_propval_by_name(locationh, PICL_PROP_CHILD,
            &childh, sizeof (picl_nodehdl_t)) != PICL_SUCCESS)
                return;
        post_frudr_event(PICL_FRU_ADDED, locationh, childh);
}

static void
add_op_status_by_name(const char *name, const char *child_name,
    picl_prophdl_t *prophdl_p)
{
        picl_nodehdl_t          nodeh;

        if (ptree_get_node_by_path(name, &nodeh) != PICL_SUCCESS) {
                return;
        }

        if (ptree_get_propval_by_name(nodeh, PICL_PROP_CHILD,
            &nodeh, sizeof (picl_nodehdl_t)) != PICL_SUCCESS) {

                if (child_name == NULL)
                        return;
                /*
                 * create fru node of supplied name
                 */
                if (ptree_create_and_add_node(nodeh, child_name,
                    PICL_CLASS_FRU, &nodeh) != PICL_SUCCESS)
                        return;
        }

        add_op_status_to_node(nodeh, prophdl_p);
}

/*
 * function to add a volatile property to a specified node
 */
static void
add_op_status_to_node(picl_nodehdl_t nodeh, picl_prophdl_t *prophdl_p)
{
        int                     err;
        ptree_propinfo_t        info;
        picl_prophdl_t          proph;

        err = ptree_init_propinfo(&info, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_CHARSTRING, PICL_VOLATILE | PICL_READ, max_opst_len,
            PICL_PROP_OPERATIONAL_STATUS, read_vol_data, NULL);

        if (err == PICL_SUCCESS) {
                if (ptree_get_prop_by_name(nodeh, PICL_PROP_OPERATIONAL_STATUS,
                    &proph) == PICL_SUCCESS) {
                        if (ptree_delete_prop(proph) == PICL_SUCCESS)
                                err = ptree_destroy_prop(proph);
                }
        }

        if ((err != PICL_SUCCESS) || ((err = ptree_create_and_add_prop(nodeh,
            &info, NULL, prophdl_p)) != PICL_SUCCESS)) {
                syslog(LOG_ERR, ADD_PROP_FAIL, PICL_PROP_OPERATIONAL_STATUS,
                    err);
                return;
        }
}

/*
 * Deliver volatile property value.
 * prtpicl gets very upset if we fail this command, so if the property
 * cannot be retrieved, return a status of unknown.
 */
static int
read_vol_data(ptree_rarg_t *r_arg, void *buf)
{
        picl_prophdl_t  proph;
        int             index;
        int             envmon_fd;
        int             err;
        envmon_hpu_t    data;

        proph = r_arg->proph;
        index = find_picl_handle(proph);

        if (index < 0) {
                /*
                 * We drop memory of PSU op status handles in opst_init()
                 * when we get an RMC faulty event. We cannot access the
                 * status info in this circumstance, so returning "unknown"
                 * is appropriate.
                 */
                (void) strlcpy(buf, str_opst_unknown, max_opst_len);
                return (PICL_SUCCESS);
        }

        envmon_fd = open(sc_device_name, O_RDONLY);

        if (envmon_fd < 0) {
                /*
                 * To get this far we must have succeeded with an earlier
                 * open, so this is an unlikely failure. It would be more
                 * helpful to indicate the nature of the failure, but we
                 * don't have the space to say much. Just return "unknown".
                 */
                (void) strlcpy(buf, str_opst_unknown, max_opst_len);
                return (PICL_SUCCESS);
        }

        data.id = idprop->idp[index].envhandle;
        err = ioctl(envmon_fd, ENVMONIOCHPU, &data);

        if (err < 0) {
                /*
                 * If we can't read the stats, "unknown" is a reasonable
                 * status to return. This one really shouldn't happen.
                 */
                (void) strlcpy(buf, str_opst_unknown, max_opst_len);
                (void) close(envmon_fd);
                return (PICL_SUCCESS);
        }

        (void) close(envmon_fd);

        if (strncmp(data.id.name, DISK_NAME, DISK_NAME_LEN) == 0 &&
            data.fru_status == ENVMON_FRU_PRESENT) {
                (void) strlcpy(buf, str_opst_present, max_opst_len);
                return (PICL_SUCCESS);
        }

        if (data.sensor_status != ENVMON_SENSOR_OK) {
                (void) strlcpy(buf, str_opst_unknown, max_opst_len);
                return (PICL_SUCCESS);
        }

        (void) strlcpy(buf,
            data.fru_status == ENVMON_FRU_PRESENT ? str_opst_ok :
            data.fru_status == ENVMON_FRU_DOWNLOAD ? str_opst_download :
            data.fru_status == ENVMON_FRU_FAULT ? str_opst_faulty :
            str_opst_unknown, max_opst_len);

        return (PICL_SUCCESS);
}

/*
 * Function for explicitly turning on system leds
 * for a failed/degraded RMC (SC).
 */
static void
solaris_setleds(const char *led_path, int leds)
{
        i2c_gpio_t      gpio;
        int             fd = open(led_path, O_RDWR);

        if (fd < 0)
                return;

        gpio.reg_val = (leds ^ 0xff);
        gpio.reg_mask = 0xffffffff;
        if (ioctl(fd, GPIO_SET_CONFIG, &gpio) == 0) {
                gpio.reg_val = (leds ^ 0xff);
                gpio.reg_mask = 0xffffffff;
                (void) ioctl(fd, GPIO_SET_OUTPUT, &gpio);
        }
        (void) close(fd);
}

/*
 * Function for explicitly turning on system leds
 * for a failed/degraded RMC (SC) on Seattle
 */
static void
seattle_setleds(void)
{
        int fd;

        fd = open(SEATTLE_LED_DEV, O_RDWR);

        if (fd < 0)
                return;

        ioctl(fd, EPIC_SET_POWER_LED, (char *)0);
        ioctl(fd, EPIC_SET_ALERT_LED, (char *)0);
        (void) close(fd);
}

/*
 * Function for explicitly turning on the front system leds
 * for a failed/degraded RMC (SC) on Boston
 */
static void
boston_set_frontleds(const char *led_path, int leds)
{
        i2c_gpio_t      gpio;
        int             fd = open(led_path, O_RDWR);

        if (fd < 0) {
                return;
        }

        /* first clear the polarity */
        gpio.reg_val  = BOSTON_FRONT_CLEAR_POL;
        gpio.reg_mask = BOSTON_FRONT_LED_MASK;
        if (ioctl(fd, GPIO_SET_POLARITY, &gpio) < 0)    {
                (void) close(fd);
                return;
        }

        /* now clear the direction */
        gpio.reg_val  = BOSTON_FRONT_CLEAR_DIR;
        gpio.reg_mask = BOSTON_FRONT_LED_MASK;
        if (ioctl(fd, GPIO_SET_CONFIG, &gpio) < 0)      {
                (void) close(fd);
                return;
        }

        /* and light the leds */
        gpio.reg_val = leds;
        gpio.reg_mask = BOSTON_FRONT_LED_MASK;
        ioctl(fd, GPIO_SET_OUTPUT, &gpio);
        (void) close(fd);
}

/*
 * Function for explicitly turning on the rear system leds
 * for a failed/degraded RMC (SC) on Boston
 */
static void
boston_set_rearleds(const char *led_path, int leds)
{
        i2c_gpio_t      gpio;
        int             fd = open(led_path, O_RDWR);

        if (fd < 0) {
                return;
        }

        /* first clear the polarity */
        gpio.reg_val  = BOSTON_REAR_CLEAR_POL;
        gpio.reg_mask = BOSTON_REAR_LED_MASK;
        if (ioctl(fd, GPIO_SET_POLARITY, &gpio) < 0)    {
                (void) close(fd);
                return;
        }

        /* now set the direction */
        gpio.reg_val  = BOSTON_REAR_LED_MASK;
        gpio.reg_mask = BOSTON_REAR_LED_MASK;
        if (ioctl(fd, GPIO_SET_CONFIG, &gpio) < 0)      {
                (void) close(fd);
                return;
        }

        /* and light the leds */
        gpio.reg_val = leds;
        gpio.reg_mask = BOSTON_REAR_LED_MASK;
        ioctl(fd, GPIO_SET_OUTPUT, &gpio);
        (void) close(fd);
}

static void
rmc_state_event(void)
{
        envmon_hpu_t    hpu;
        int             res;
        int             fd = open(sc_device_name, O_RDONLY);

        if (fd < 0)
                return;

        (void) strlcpy(hpu.id.name, RMC_NAME, sizeof (hpu.id.name));
        res = ioctl(fd, ENVMONIOCHPU, &hpu);
        (void) close(fd);

        if ((res == 0) && (hpu.sensor_status == ENVMON_SENSOR_OK) &&
            ((hpu.fru_status & ENVMON_FRU_FAULT) != 0)) {
                /*
                 * SC failed event - light the service led
                 * note that as Solaris is still running,
                 * the Solaris active led should be lit too.
                 */
                switch (sys_platform) {
                case PLAT_ENXS:
                case PLAT_SALSA19:
                case PLAT_EN19:
                        solaris_setleds(ENXS_REAR_LEDS,
                            ENXS_REAR_SRVC_LED | ENXS_REAR_ACT_LED);
                        /*
                         * the device name for the bezel leds GPIO device
                         * tends to vary from Unix to Unix. Search for it.
                         */
                        if (bezel_leds  == NULL) {
                                bezel_leds =
                                    create_bezel_leds_pathname(ENXS_LED_DIR,
                                    ENXS_FRONT_LEDS);
                        }
                        if (bezel_leds == NULL)
                                return;
                        solaris_setleds(bezel_leds,
                            ENXS_FRONT_SRVC_LED | ENXS_FRONT_ACT_LED);
                        break;
                case PLAT_ENTS:
                        /*
                         * the device name for the system leds gpio can vary
                         * as there are several similar gpio devices. Search
                         * for one with the desired address.
                         */
                        if (bezel_leds  == NULL) {
                                bezel_leds =
                                    create_bezel_leds_pathname(ENTS_LED_DIR,
                                    ENTS_LEDS);
                        }
                        if (bezel_leds == NULL)
                                return;
                        solaris_setleds(bezel_leds,
                            ENTS_SRVC_LED | ENTS_ACT_LED);
                        break;
                case PLAT_CHALUPA:
                case PLAT_CHALUPA19:
                        solaris_setleds(V440_LED_PATH,
                            V440_SRVC_LED | V440_ACT_LED);
                        break;
                case PLAT_BOSTON:
                        /* set front leds */
                        boston_set_frontleds(BOSTON_FRONT_LED_PATH,
                            BOSTON_FRONT_SRVC_LED | BOSTON_FRONT_ACT_LED);
                        /* and then the rear leds */
                        boston_set_rearleds(BOSTON_REAR_LED_PATH,
                            BOSTON_REAR_SRVC_LED | BOSTON_REAR_ACT_LED);
                        break;
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                        seattle_setleds();
                        break;
                default:
                        break;
                }
        }
}

static int
find_picl_handle(picl_prophdl_t proph)
{
        int index;

        if (idprop == NULL)
                return (-1);

        for (index = 0; index < idprop->num; index++) {
                if (idprop->idp[index].volprop == proph)
                        return (index);
        }

        return (-1);
}

static int
find_vol_prop_by_name(const char *name)
{
        int index;

        if (idprop == NULL)
                return (-1);

        for (index = 0; index < idprop->num; index++) {
                if (strcmp(idprop->idp[index].envhandle.name, name) == 0)
                        return (index);
        }

        return (-1);
}

/*
 * This function is the fini entry point of the plugin.
 */
static void
piclfrudr_fini(void)
{
        (void) ptree_unregister_handler(PICLEVENT_DR_AP_STATE_CHANGE,
            frudr_evhandler, NULL);
        (void) ptree_unregister_handler(PICL_FRU_ADDED, fru_add_handler,
            NULL);
        disk_leds_fini();
        if (idprop != NULL) {
                free(idprop);
                idprop = NULL;
        }
        if (sc_device_name != NULL) {
                free(sc_device_name);
                sc_device_name = NULL;
        }
}

/*
 * subroutine for various functions. Finds immediate child of parh with
 * requested name if present. Otherwise returns NULL.
 */
static picl_nodehdl_t
find_child_by_name(picl_nodehdl_t parh, char *name)
{
        picl_nodehdl_t nodeh;
        int err;
        char    nodename[PICL_PROPNAMELEN_MAX];

        err = ptree_get_propval_by_name(parh, PICL_PROP_CHILD,
            &nodeh, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS)
                return (NULL);
        for (;;) {
                err = ptree_get_propval_by_name(nodeh, PICL_PROP_NAME, nodename,
                    sizeof (nodename));
                if (err != PICL_SUCCESS)
                        return (NULL);
                if (strcmp(name, nodename) == 0) {
                        return (nodeh);
                }
                err = ptree_get_propval_by_name(nodeh, PICL_PROP_PEER,
                    &nodeh, sizeof (picl_nodehdl_t));
                if (err != PICL_SUCCESS)
                        return (NULL);
        }
}

/* Creates a reference property for a given PICL node */
static int
add_prop_ref(picl_nodehdl_t nodeh, picl_nodehdl_t value, char *name)
{
        picl_prophdl_t proph;
        ptree_propinfo_t propinfo;
        int err;

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_REFERENCE, PICL_READ, sizeof (picl_nodehdl_t), name,
            NULL, NULL);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROPINFO_FAIL, name, err);
                return (err);
        }
        err = ptree_create_and_add_prop(nodeh, &propinfo, &value, &proph);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_PROP_FAIL, name, err);
                return (err);
        }
        return (PICL_SUCCESS);
}

/* create an entry in the specified table */
static int
create_table_entry(picl_prophdl_t tblhdl, picl_nodehdl_t refhdl, char *class)
{
        int                     err;
        ptree_propinfo_t        prop;
        picl_prophdl_t          prophdl[2];

        /* first column is class */
        prop.version = PTREE_PROPINFO_VERSION;
        prop.piclinfo.type =  PICL_PTYPE_CHARSTRING;
        prop.piclinfo.accessmode = PICL_READ;
        prop.piclinfo.size = PICL_CLASSNAMELEN_MAX;
        prop.read = NULL;
        prop.write = NULL;
        (void) strlcpy(prop.piclinfo.name, PICL_PROP_CLASS,
            sizeof (prop.piclinfo.name));
        err = ptree_create_prop(&prop, class, &prophdl[0]);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_TBL_ENTRY_FAIL, err);
                return (err);
        }

        /* second column is reference property */
        prop.version = PTREE_PROPINFO_VERSION;
        prop.piclinfo.type =  PICL_PTYPE_REFERENCE;
        prop.piclinfo.accessmode = PICL_READ;
        prop.piclinfo.size = sizeof (picl_nodehdl_t);
        prop.read = NULL;
        prop.write = NULL;
        sprintf_buf2(prop.piclinfo.name, "_%s_", class);
        err = ptree_create_prop(&prop, &refhdl, &prophdl[1]);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_TBL_ENTRY_FAIL, err);
                return (err);
        }

        /* add row to table */
        err = ptree_add_row_to_table(tblhdl, 2, prophdl);
        if (err != PICL_SUCCESS)
                syslog(LOG_ERR, ADD_TBL_ENTRY_FAIL, err);
        return (err);
}

/* create an empty table property */
static int
create_table(picl_nodehdl_t fruhdl, picl_prophdl_t *tblhdlp, char *tbl_name)
{
        int                     err;
        ptree_propinfo_t        prop;
        picl_prophdl_t          tblprophdl;

        err = ptree_create_table(tblhdlp);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_PROP_FAIL, tbl_name, err);
                return (err);
        }
        prop.version = PTREE_PROPINFO_VERSION;
        prop.piclinfo.type =  PICL_PTYPE_TABLE;
        prop.piclinfo.accessmode = PICL_READ;
        prop.piclinfo.size = sizeof (picl_prophdl_t);
        prop.read = NULL;
        prop.write = NULL;
        (void) strlcpy(prop.piclinfo.name, tbl_name,
            sizeof (prop.piclinfo.name));
        err = ptree_create_and_add_prop(fruhdl, &prop, tblhdlp, &tblprophdl);
        if (err != PICL_SUCCESS)
                syslog(LOG_ERR, ADD_PROP_FAIL, tbl_name, err);
        return (err);
}

/*
 * The size of outfilename must be PATH_MAX
 */
static int
get_config_file(char *outfilename, char *fru)
{
        char            nmbuf[SYS_NMLN];
        char            pname[PATH_MAX];
        int             dir;

        for (dir = 0; dir < 2; dir++) {
                if (sysinfo(dir == 0 ? SI_PLATFORM : SI_MACHINE,
                    nmbuf, sizeof (nmbuf)) == -1) {
                        continue;
                }

                (void) snprintf(pname, PATH_MAX, PICLD_PLAT_PLUGIN_DIRF, nmbuf);
                (void) strlcat(pname, CONFFILE_PREFIX, PATH_MAX);
                (void) strlcat(pname, fru, PATH_MAX);
                (void) strlcat(pname, CONFFILE_SUFFIX, PATH_MAX);

                if (access(pname, R_OK) == 0) {
                        (void) strlcpy(outfilename, pname, PATH_MAX);
                        return (0);
                }
        }

        (void) snprintf(pname, PATH_MAX, "%s/%s%s%s",
            PICLD_COMMON_PLUGIN_DIR, CONFFILE_PREFIX, fru,
            CONFFILE_SUFFIX);

        if (access(pname, R_OK) == 0) {
                (void) strlcpy(outfilename, pname, PATH_MAX);
                return (0);
        }

        return (-1);
}

/*
 * This helper function for Netra-440 fan tray removal removes
 * the rmclomv-rooted nodes and their properties.
 */
static void
delete_node_and_props(picl_nodehdl_t hdl)
{
        picl_prophdl_t prop;
        int err;

        do {
                err = ptree_get_first_prop(hdl, &prop);
                if (err == PICL_SUCCESS) {
                        if (ptree_delete_prop(prop) == PICL_SUCCESS)
                                (void) ptree_destroy_prop(prop);
                }
        } while (err == PICL_SUCCESS);
        if (ptree_delete_node(hdl) == PICL_SUCCESS)
                (void) ptree_destroy_node(hdl);
}

static void
remove_fru_parents(picl_nodehdl_t fruh)
{
        char                    name[MAXPATHLEN];
        int                     retval;
        picl_nodehdl_t          nodeh;
        picl_prophdl_t          tableh;
        picl_prophdl_t          tblh;
        picl_prophdl_t          fruph;
        picl_nodehdl_t          childh;
        int                     fanfru = 0;

        retval = ptree_get_propval_by_name(fruh, PICL_PROP_NAME, name,
            sizeof (name));
        if (retval != PICL_SUCCESS) {
                syslog(LOG_ERR, EM_UNK_FRU);
                return;
        }

        retval = ptree_get_prop_by_name(fruh, PICL_PROP_DEVICES, &tableh);
        if (retval != PICL_SUCCESS) {
                /*
                 * No Devices table. However on Seattle, Boston and
                 * Netra-440 (Chalupa19) (which support fan fru hotplug),
                 * the Devices table will be found under the child node (Fn)
                 * of the fru (fan-tray).
                 * Therefore, check the first child of the fru for the
                 * Devices table on these platforms before returning.
                 */
                switch (sys_platform) {
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                case PLAT_BOSTON:
                        if (strcmp(name, FT_FRU_NAME) != 0)
                                return;
                        fanfru = 1;
                        break;
                case PLAT_CHALUPA19:
                        if (strncmp(name, F0_NAME, F0_NAME_LEN) &&
                            strncmp(name, F1_NAME, F1_NAME_LEN))
                                return;
                        fanfru = 1;
                        break;
                default:
                        /* nothing to do */
                        return;
                }
                retval = ptree_get_propval_by_name(fruh,
                    PICL_PROP_CHILD, &childh, sizeof (picl_nodehdl_t));
                if (retval != PICL_SUCCESS)
                        return;
                retval = ptree_get_prop_by_name(childh,
                    PICL_PROP_DEVICES, &tableh);
                if (retval != PICL_SUCCESS)
                        return;
        }

        /*
         * follow all reference properties in the second
         * column of the table and delete any _fru_parent node
         * at the referenced node.
         */
        retval = ptree_get_propval(tableh, &tblh, sizeof (tblh));
        if (retval != PICL_SUCCESS) {
                /* can't get value of table property */
                goto afterloop;
        }

        /* get first col, first row */
        retval = ptree_get_next_by_col(tblh, &tblh);
        if (retval != PICL_SUCCESS) {
                /* no rows? */
                goto afterloop;
        }

        /*
         * starting at next col, get every entry in the column
         */
        for (retval = ptree_get_next_by_row(tblh, &tblh);
            retval == PICL_SUCCESS;
            retval = ptree_get_next_by_col(tblh, &tblh)) {
                /*
                 * should be a ref prop in our hands,
                 * get the target node handle
                 */
                retval = ptree_get_propval(tblh, &nodeh,
                    sizeof (nodeh));
                if (retval != PICL_SUCCESS) {
                        continue;
                }
                /*
                 * got the referenced node, has it got a
                 * _fru_parent property?
                 */
                retval = ptree_get_prop_by_name(nodeh,
                    PICL_REFPROP_FRU_PARENT, &fruph);
                if (retval != PICL_SUCCESS) {
                        /*
                         * on Boston, Seattle and Netra-440 we should
                         * actually be looking for the _location_parent
                         * property for fan frus
                         */
                        if (fanfru) {
                                retval = ptree_get_prop_by_name(nodeh,
                                    PICL_REFPROP_LOC_PARENT, &fruph);
                        }
                        if (retval != PICL_SUCCESS)
                                continue;
                }
                /*
                 * got a _fru_parent node reference delete it
                 */
                if (ptree_delete_prop(fruph) == PICL_SUCCESS)
                        (void) ptree_destroy_prop(fruph);

                /* On Netra-440, extra clean-up is required for fan trays */
                if ((sys_platform == PLAT_CHALUPA19) && (fanfru)) {
                        /* remove the rmclomv node and its properties */
                        delete_node_and_props(nodeh);
                }
        }
afterloop:
        /* More Netra-440 fan tray clean-up  */
        if ((sys_platform == PLAT_CHALUPA19) && (fanfru)) {
                /* remove the fru's child's table */
                if (ptree_delete_prop(tableh) == PICL_SUCCESS)
                        (void) ptree_destroy_prop(tableh);
                /* remove the child */
                if (ptree_delete_node(childh) == PICL_SUCCESS)
                        (void) ptree_destroy_node(childh);
        }
}

static void
remove_tables(picl_nodehdl_t rootnd)
{
        picl_nodehdl_t  tableh;
        int             retval;

        retval = ptree_get_prop_by_name(rootnd, PICL_PROP_DEVICES, &tableh);

        if (retval == PICL_SUCCESS) {
                /*
                 * found a Devices property, delete it
                 */
                if ((retval = ptree_delete_prop(tableh)) == PICL_SUCCESS) {
                        (void) ptree_destroy_prop(tableh);
                }
        }

        /*
         * is there a child node?
         */
        retval = ptree_get_propval_by_name(rootnd, PICL_PROP_CHILD, &rootnd,
            sizeof (rootnd));

        while (retval == PICL_SUCCESS) {

                remove_tables(rootnd);

                /*
                 * any siblings?
                 */
                retval = ptree_get_propval_by_name(rootnd, PICL_PROP_PEER,
                    &rootnd, sizeof (rootnd));
        }
}

/*
 * Event completion handler for PICL_FRU_ADDED/PICL_FRU_REMOVED events
 */
/* ARGSUSED */
static void
frudr_completion_handler(char *ename, void *earg, size_t size)
{
        picl_nodehdl_t  fruh;
        picl_nodehdl_t  parh;
        picl_nodehdl_t  peerh = NULL;
        char    nodename[PICL_PROPNAMELEN_MAX] = { '\0' };
        int err;

        if (strcmp(ename, PICL_FRU_REMOVED) == 0) {
                /*
                 * now frudata has been notified that the node is to be
                 * removed, we can actually remove it
                 */
                fruh = NULL;
                (void) nvlist_lookup_uint64(earg,
                    PICLEVENTARG_FRUHANDLE, &fruh);
                if (fruh != NULL) {
                        (void) ptree_get_propval_by_name(fruh, PICL_PROP_PEER,
                            &peerh, sizeof (peerh));

                        /*
                         * first find name of the fru
                         */
                        err = ptree_get_propval_by_name(fruh, PICL_PROP_PARENT,
                            &parh, sizeof (parh));
                        if (err == PICL_SUCCESS) {
                                err = ptree_get_propval_by_name(parh,
                                    PICL_PROP_NAME, nodename,
                                    sizeof (nodename));
                        }
                        if (err == PICL_SUCCESS) {
                                /*
                                 * if it was a power supply, delete i2c node
                                 */
                                if (strncmp(nodename, PS_NAME,
                                    PS_NAME_LEN) == 0) {
                                        (void) delete_i2c_node(nodename);
                                }

                                /*
                                 * is disk node, make thread re-evaluate led
                                 * state
                                 */
                                if (strncmp(nodename, DISK_NAME,
                                    DISK_NAME_LEN) == 0) {
                                        disk_ready[nodename[DISK_NAME_LEN] -
                                            '0'] = -1;
                                }
                        }

                        remove_fru_parents(fruh);

                        /*
                         * now we can delete the node
                         */
                        err = ptree_delete_node(fruh);
                        if (err == PICL_SUCCESS) {
                                (void) ptree_destroy_node(fruh);
                        } else {
                                syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                        }

                        if ((sys_platform == PLAT_CHALUPA19) &&
                            (strncmp(nodename, FT_NAME, FT_NAME_LEN) == 0) &&
                            (peerh != NULL)) {
                                /*
                                 * On Netra-440 platforms, a fan tray
                                 * may contain 2 fans (F0 and F1) but
                                 * we only receive a single notification
                                 * for removal of F0.  If F1 is present,
                                 * peerh will be valid and we need to
                                 * process it as well.
                                 */
                                remove_fru_parents(peerh);
                                err = ptree_delete_node(peerh);
                                if (err == PICL_SUCCESS) {
                                        (void) ptree_destroy_node(peerh);
                                } else {
                                        syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                                }
                        }
                }
        }

        free(ename);
        nvlist_free(earg);
}

/*
 * Post the PICL_FRU_ADDED/PICL_FRU_REMOVED event
 */
static void
post_frudr_event(char *ename, picl_nodehdl_t parenth, picl_nodehdl_t fruh)
{
        nvlist_t        *nvl;
        char            *ev_name;

        ev_name = strdup(ename);
        if (ev_name == NULL)
                return;
        if (nvlist_alloc(&nvl, NV_UNIQUE_NAME_TYPE, NULL)) {
                free(ev_name);
                return;
        }
        if (parenth != 0L &&
            nvlist_add_uint64(nvl, PICLEVENTARG_PARENTHANDLE, parenth)) {
                free(ev_name);
                nvlist_free(nvl);
                return;
        }
        if (fruh != 0L &&
            nvlist_add_uint64(nvl, PICLEVENTARG_FRUHANDLE, fruh)) {
                free(ev_name);
                nvlist_free(nvl);
                return;
        }
        if (ptree_post_event(ev_name, nvl, sizeof (nvl),
            frudr_completion_handler) != 0) {
                free(ev_name);
                nvlist_free(nvl);
        }
}

static void
add_ps_to_platform(char *unit)
{
        picl_nodehdl_t          parent_hdl;
        picl_nodehdl_t          child_hdl;
        ptree_propinfo_t        info;
        int                     unit_size = 1 + strlen(unit);
        int                     res;
        char                    unit_addr[PICL_UNITADDR_LEN_MAX];

        switch (sys_platform) {
        case PLAT_SEATTLE1U:
        case PLAT_SEATTLE2U:
                res = ptree_get_node_by_path(SEATTLE_PSU_PLATFORM, &parent_hdl);
                break;
        case PLAT_BOSTON:
                res = ptree_get_node_by_path(BOSTON_PSU_PLATFORM, &parent_hdl);
                break;
        default:
                res = ptree_get_node_by_path(PSU_PLATFORM, &parent_hdl);
                break;
        }

        if (res != PICL_SUCCESS)
                return;
        /*
         * seeprom nodes sit below this node,
         * is there one with the supplied unit address?
         */
        res = ptree_get_propval_by_name(parent_hdl, PICL_PROP_CHILD,
            &child_hdl, sizeof (picl_nodehdl_t));

        while (res == PICL_SUCCESS) {
                res = ptree_get_propval_by_name(child_hdl, PICL_PROP_PEER,
                    &child_hdl, sizeof (picl_nodehdl_t));
                if ((res == PICL_SUCCESS) &&
                    ptree_get_propval_by_name(child_hdl,
                    PICL_PROP_UNIT_ADDRESS, unit_addr,
                    sizeof (unit_addr)) == PICL_SUCCESS) {
                        unit_addr[sizeof (unit_addr) - 1] = '\0';
                        if (strcmp(unit_addr, unit) == 0)
                                return; /* unit address exists already */
                }
        }

        /*
         * found platform location for PS seeprom node, create it
         */
        if (ptree_create_and_add_node(parent_hdl, PS_PLATFORM_NAME,
            PICL_CLASS_SEEPROM, &child_hdl) != PICL_SUCCESS)
                return;
        if (ptree_init_propinfo(&info, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_CHARSTRING, PICL_READ, unit_size,
            PICL_PROP_UNIT_ADDRESS, NULL, NULL) != PICL_SUCCESS)
                return;
        (void) ptree_create_and_add_prop(child_hdl, &info, unit, NULL);
}

static void
get_fantray_path(char *ap_id, char *path, int bufsz)
{
        char    ft_id[FT_ID_BUFSZ];

        (void) strlcpy(ft_id, ap_id, FT_ID_BUFSZ);

        switch (sys_platform) {
        case PLAT_SEATTLE1U:
                if ((strncmp(ap_id, "FT0", 3) == 0) ||
                    (strncmp(ap_id, "FT1", 3) == 0) ||
                    (strncmp(ap_id, "FT2", 3) == 0)) {
                        (void) snprintf(path, bufsz, SEATTLE_FCB0_1U, ft_id);
                } else if ((strncmp(ap_id, "FT3", 3) == 0) ||
                    (strncmp(ap_id, "FT4", 3) == 0) ||
                    (strncmp(ap_id, "FT5", 3) == 0)) {
                        (void) snprintf(path, bufsz, SEATTLE_FCB1_1U, ft_id);
                } else {
                        (void) snprintf(path, bufsz, SEATTLE_PDB_1U, ft_id);
                }
                break;

        case PLAT_SEATTLE2U:
                if ((strncmp(ap_id, "FT0", 3) == 0) ||
                    (strncmp(ap_id, "FT1", 3) == 0) ||
                    (strncmp(ap_id, "FT2", 3) == 0)) {
                        (void) snprintf(path, bufsz, SEATTLE_FCB0_2U, ft_id);
                } else if ((strncmp(ap_id, "FT3", 3) == 0) ||
                    (strncmp(ap_id, "FT4", 3) == 0) ||
                    (strncmp(ap_id, "FT5", 3) == 0)) {
                        (void) snprintf(path, bufsz, SEATTLE_FCB1_2U, ft_id);
                } else {
                        (void) snprintf(path, bufsz, SEATTLE_PDB_2U, ft_id);
                }
                break;

        case PLAT_BOSTON:
                (void) snprintf(path, bufsz, SYS_BOARD_PATH, ft_id);
                break;

        default:
                (void) snprintf(path, bufsz, CHASSIS_LOC_PATH, ft_id);
                break;
        }
}

/*
 * handle EC_DR picl events
 */
/*ARGSUSED*/
static void
frudr_evhandler(const char *ename, const void *earg, size_t size, void *cookie)
{
        nvlist_t                *nvlp;
        char                    *dtype;
        char                    *ap_id;
        char                    *hint;
        char                    path[MAXPATHLEN];
        picl_nodehdl_t          fruh;
        picl_nodehdl_t          locnodeh;
        int                     err;
        int                     index;
        picl_nodehdl_t          childh;
        char                    *fru_name;
        boolean_t               rmc_flag = B_FALSE;

        if (strcmp(ename, PICLEVENT_DR_AP_STATE_CHANGE) != 0) {
                return;
        }

        if (nvlist_unpack((char *)earg, size, &nvlp, NULL)) {
                return;
        }

        if (nvlist_lookup_string(nvlp, PICLEVENTARG_DATA_TYPE, &dtype)) {
                nvlist_free(nvlp);
                return;
        }

        if (strcmp(dtype, PICLEVENTARG_PICLEVENT_DATA) != 0) {
                nvlist_free(nvlp);
                return;
        }

        if (nvlist_lookup_string(nvlp, PICLEVENTARG_AP_ID, &ap_id)) {
                nvlist_free(nvlp);
                return;
        }

        /*
         * check ap_id really is a hot-plug device
         */
        if (strncmp(ap_id, PS_NAME, PS_NAME_LEN) == 0) {
                fru_name = PS_FRU_NAME;
        } else if (strncmp(ap_id, DISK_NAME, DISK_NAME_LEN) == 0) {
                fru_name = DISK_FRU_NAME;
        } else if (strncmp(ap_id, SCC_NAME, SCC_NAME_LEN) == 0) {
                fru_name = SCC_FRU_NAME;
        } else if (strncmp(ap_id, RMC_NAME, RMC_NAME_LEN) == 0) {
                fru_name = RMC_FRU_NAME;
                rmc_flag = B_TRUE;
        } else if (strncmp(ap_id, FT_NAME, FT_NAME_LEN) == 0) {
                fru_name = FT_FRU_NAME;
        } else {
                nvlist_free(nvlp);
                return;
        }

        if (nvlist_lookup_string(nvlp, PICLEVENTARG_HINT, &hint)) {
                nvlist_free(nvlp);
                return;
        }

        /*
         * OK - so this is an EC_DR event - let's handle it.
         */
        if (rmc_flag && (sys_platform != PLAT_CHALUPA) &&
            (sys_platform != PLAT_CHALUPA19))
                sprintf_buf2(path, SYS_BOARD_PATH, ap_id);
        else {
                if ((sys_platform == PLAT_CHALUPA19) &&
                    (strncmp(ap_id, PS_NAME, PS_NAME_LEN) == 0)) {
                        sprintf_buf2(path, CHASSIS_LOC_PATH,
                            ps_apid_to_nodename(ap_id));
                } else  if (strncmp(ap_id, DISK_NAME, DISK_NAME_LEN) == 0) {
                        switch (sys_platform)   {
                        case PLAT_SEATTLE1U:
                                sprintf_buf2(path, SEATTLE1U_HDDBP_PATH, ap_id);
                                break;
                        case PLAT_SEATTLE2U:
                                sprintf_buf2(path, SEATTLE2U_HDDBP_PATH, ap_id);
                                break;
                        case PLAT_BOSTON:
                                sprintf_buf2(path, BOSTON_HDDBP_PATH, ap_id);
                                break;
                        default:
                                sprintf_buf2(path, CHASSIS_LOC_PATH, ap_id);
                                break;
                        }
                } else if (strncmp(ap_id, FT_NAME, FT_NAME_LEN) == 0) {
                        get_fantray_path(ap_id, path, MAXPATHLEN);
                } else  {
                        sprintf_buf2(path, CHASSIS_LOC_PATH, ap_id);
                }
        }

        if (ptree_get_node_by_path(path, &locnodeh) != PICL_SUCCESS) {
                nvlist_free(nvlp);
                return;
        }

        /*
         * now either add or delete the fru node as appropriate. If no
         * hint, treat as insert and update the tree if necessary.
         */
        if (strcmp(hint, DR_HINT_REMOVE) == 0) {
                if (ptree_get_propval_by_name(locnodeh, PICL_PROP_CHILD,
                    &fruh, sizeof (picl_nodehdl_t)) == PICL_SUCCESS) {
                        /*
                         * fru was there - but has gone away
                         */
                        post_frudr_event(PICL_FRU_REMOVED, NULL, fruh);
                }
        } else if (rmc_flag) {
                /*
                 * An event on the RMC location, just pass it on
                 * it's not really a PICL_FRU_ADDED event, so offer
                 * the child handle as well (if it exists).
                 */
                if (ptree_get_propval_by_name(locnodeh, PICL_PROP_CHILD,
                    &fruh, sizeof (picl_nodehdl_t)) != PICL_SUCCESS) {
                        fruh = NULL;
                }
                post_frudr_event(PICL_FRU_ADDED, locnodeh, fruh);
        } else {
                /*
                 * fru has been inserted (or may need to update)
                 * if node already there, then just return
                 */
                childh = find_child_by_name(locnodeh, fru_name);
                if (childh != NULL) {
                        nvlist_free(nvlp);
                        return;
                }

                /*
                 * On Netra-440, the fan-tray location nodes are
                 * not deleted when fan-trays are physically
                 * removed, so we do not need to create another
                 * fru node.
                 */
                if ((sys_platform != PLAT_CHALUPA19) ||
                    (strncmp(fru_name, FT_FRU_NAME, FT_FRU_NAME_LEN) != 0)) {
                        /*
                         * create requested fru node
                         */
                        err = ptree_create_and_add_node(locnodeh, fru_name,
                            PICL_CLASS_FRU, &childh);
                        if (err != PICL_SUCCESS) {
                                syslog(LOG_ERR, ADD_NODE_FAIL, ap_id, err);
                                nvlist_free(nvlp);
                                return;
                        }
                }

                /*
                 * power supplies have operational status and fruid -
                 * add OperationalStatus property and create i2c device node
                 * before posting fru_added event
                 */
                if (strncmp(ap_id, PS_NAME, PS_NAME_LEN) == 0) {
                        index = find_vol_prop_by_name(
                            ps_apid_to_nodename(ap_id));
                        if (index >= 0)
                                add_op_status_to_node(childh,
                                    &idprop->idp[index].volprop);
                        (void) create_i2c_node(ap_id);
                        add_ps_to_platform(ps_name_to_unitaddr(ap_id));
                }

                /*
                 * now post event
                 */
                post_frudr_event(PICL_FRU_ADDED, locnodeh, NULL);
        }
        nvlist_free(nvlp);
}

/*
 * Handle PICL_FRU_ADDED events.
 * These events are posted by the frudr_evhandler of this plugin in response to
 * PICLEVENT_DR_AP_STATE_CHANGE events. The sequence is as follows:
 *      1) frudr_evhandler catches PICLEVENT_DR_AP_STATE_CHANGE and creates a
 *      child node below the relevant location.
 *      2) frudr_evhandler posts a PICL_FRU_ADDED event.
 *      3) envmon catches PICL_FRU_ADDED event, gropes the RMC configuration
 *      and creates platform tree nodes (primarily for PSUs). (If the event
 *      is for the RMC itself, envmon deletes existing platform nodes and
 *      rebuilds from scratch.)
 *      4) this plugin catches PICL_FRU_ADDED event, looks for a related
 *      configuration file and parses it. This adds Fru data properties (etc.).
 *      5) frudata catches the event and updates its FRUID data cache.
 */
/*ARGSUSED*/
static void
fru_add_handler(const char *ename, const void *earg, size_t size, void *cookie)
{
        int                     retval;
        picl_nodehdl_t          locnodeh;
        picl_nodehdl_t          rooth;
        char                    path[MAXPATHLEN];
        char                    *fru_name;

        if (strcmp(ename, PICL_FRU_ADDED) != 0)
                return;

        retval = nvlist_lookup_uint64((nvlist_t *)earg,
            PICLEVENTARG_PARENTHANDLE, &locnodeh);
        if (retval != PICL_SUCCESS)
                return;

        retval = ptree_get_propval_by_name(locnodeh, PICL_PROP_NAME,
            path, sizeof (path));
        if (retval != PICL_SUCCESS)
                return;

        fru_name = strdup(path);
        if (fru_name == NULL)
                return;

        /*
         * We're about to parse a fru-specific .conf file to populate
         * picl nodes relating to the dynamically added component. In the
         * case of the RMC, there is a problem: all of its /platform tree
         * nodes have just been replaced by envmon. It is now necessary to
         * repopulate Devices tables in /frutree.
         * picld_pluginutil_parse_config_file doesn't handle repopulating
         * existing tables, so as a work round, delete all tables found
         * under /frutree. This works on Enchilada Server as the tables
         * are all created from parsing a .conf file, and we're about to
         * redo that action.
         */
        if (strcmp(fru_name, RMC_NAME) == 0) {
                rmc_state_event();
                retval = ptree_get_node_by_path(FRUTREE_PATH, &rooth);
                if (retval == PICL_SUCCESS) {
                        remove_tables(rooth);
                }
        }

        /*
         * Re-establish the HPU(FRU) volatile properties.
         * This needs to be done before the .conf file is parsed because
         * it has a side effect of re-creating any missing power-supply
         * fru node. The .conf file can then hang properties beneath.
         */
        opst_init();

        /*
         * see if there's a .conf file for this fru
         */
        if (get_config_file(path, fru_name) == 0) {
                if ((ptree_get_root(&rooth) != PICL_SUCCESS) ||
                    (picld_pluginutil_parse_config_file(rooth, path) !=
                    PICL_SUCCESS)) {
                        syslog(LOG_ERR, PARSE_CONF_FAIL, path);
                }
        }

        free(fru_name);
}

/*
 * Handle PICLEVENT_SYSEVENT_DEVICE_ADDED events.
 */
/*ARGSUSED*/
static void
frutree_evhandler(const char *ename, const void *earg, size_t size,
    void *cookie)
{
        nvlist_t                *nvlp;
        picl_nodehdl_t          rooth;
        char                    path[MAXPATHLEN];
        char                    *fru_name;
        char                    *dtype;
        char                    *dpath;
        char                    *ptr;
        char                    *ptr2;
        int                     done = B_FALSE;
        int                     i;

        if (strcmp(ename, PICLEVENT_SYSEVENT_DEVICE_ADDED) != 0)
                return;

        if (nvlist_unpack((char *)earg, size, &nvlp, NULL))
                return;

        if (nvlist_lookup_string(nvlp, PICLEVENTARG_DATA_TYPE, &dtype)) {
                nvlist_free(nvlp);
                return;
        }

        if (strcmp(dtype, PICLEVENTARG_PICLEVENT_DATA) != 0) {
                nvlist_free(nvlp);
                return;
        }

        if (nvlist_lookup_string(nvlp, PICLEVENTARG_DEVFS_PATH, &dpath)) {
                nvlist_free(nvlp);
                return;
        }

        fru_name = strdup(dpath);
        if (fru_name == NULL) {
                nvlist_free(nvlp);
                return;
        }

        nvlist_free(nvlp);

        /*
         * fru_name is of the form
         *      "/pci@1e,600000/usb@a/mouse@2"
         * or
         *      "/pci@1e,600000/usb@a/device@2/mouse@0"
         * reduce it to "usb-a-2"
         */
        if ((sys_platform == PLAT_SEATTLE1U) ||
            (sys_platform == PLAT_SEATTLE2U) ||
            (sys_platform == PLAT_BOSTON)) {
                for (i = 0; i < MAX_USB_PORTS; i++) {
                        sprintf(fru_name, "%s%d", USB_CONF_FILE_NAME, i+1);
                        if (get_config_file(path, fru_name) == 0) {
                                if ((ptree_get_root(&rooth) != PICL_SUCCESS) ||
                                    (picld_pluginutil_parse_config_file(rooth,
                                    path) != PICL_SUCCESS)) {
                                        syslog(LOG_ERR, PARSE_CONF_FAIL, path);
                                }
                        }
                }
        } else {
                ptr = fru_name;
                if (*ptr == '/') {
                        ptr++;
                        ptr = strchr(ptr, '/');
                        if (ptr != NULL) {
                                ptr++;
                                (void) memmove(fru_name, ptr, strlen(ptr) + 1);
                                ptr = strchr(fru_name, '@');
                                if (ptr != NULL) {
                                        *ptr = '-';
                                        ptr++;
                                        ptr = strchr(ptr, '/');
                                        if (ptr != NULL) {
                                                *ptr = '-';
                                                ptr++;
                                                ptr2 = ptr;
                                                ptr = strchr(ptr, '@');
                                                if (ptr != NULL) {
                                                        ptr++;
                                                        (void) memmove(ptr2,
                                                            ptr, strlen(ptr)+1);
                                                        ptr2 = strchr(ptr2,
                                                            '/');
                                                        if (ptr2 != NULL) {
                                                                *ptr2 = '\0';
                                                        }
                                                        done = B_TRUE;
                                                }
                                        }
                                }
                        }
                }
                if (done == B_FALSE) {
                        free(fru_name);
                        return;
                }

                /*
                 * see if there's a .conf file for this fru
                 */

                if (get_config_file(path, fru_name) == 0) {
                        if ((ptree_get_root(&rooth) != PICL_SUCCESS) ||
                            (picld_pluginutil_parse_config_file(rooth, path) !=
                            PICL_SUCCESS)) {
                                syslog(LOG_ERR, PARSE_CONF_FAIL, path);
                        }
                }
        }

        free(fru_name);
}

static int
set_led(char *name, char *ptr, char *value)
{
        char                    path[MAXPATHLEN];
        picl_prophdl_t          proph;
        ptree_propinfo_t        propinfo;
        picl_prophdl_t          tableh;
        picl_nodehdl_t          locnodeh;
        picl_nodehdl_t          nodeh;
        picl_prophdl_t          tblh;
        int                     retval;
        char                    *value_ptr;
        char                    label[PICL_PROPNAMELEN_MAX];
        char                    class[PICL_PROPNAMELEN_MAX];

        /* find the location node */
        switch (sys_platform)   {
        case PLAT_CHALUPA:
        case PLAT_CHALUPA19:
                sprintf_buf2(path, CHASSIS_LOC_PATH, name);
                break;
        case PLAT_SEATTLE1U:
                sprintf_buf2(path, SEATTLE1U_HDDBP_PATH, name);
                break;
        case PLAT_SEATTLE2U:
                sprintf_buf2(path, SEATTLE2U_HDDBP_PATH, name);
                break;
        case PLAT_BOSTON:
                sprintf_buf2(path, BOSTON_HDDBP_PATH, name);
                break;
        default:
                sprintf_buf2(path, CHASSIS_LOC_PATH, name);
                break;
        }

        if (ptree_get_node_by_path(path, &locnodeh) != PICL_SUCCESS)    {
                return (PICL_FAILURE);
        }

        /*
         * if no fru node, then turn led off
         */
        if (find_child_by_name(locnodeh, DISK_FRU_NAME) != NULL)
                value_ptr = value;
        else
                value_ptr = PICL_PROPVAL_OFF;

        /* get its Devices table */
        if (ptree_get_prop_by_name(locnodeh, PICL_PROP_DEVICES, &tableh) !=
            PICL_SUCCESS)
                return (PICL_FAILURE);
        if (ptree_get_propval(tableh, &tblh, sizeof (tblh)) != PICL_SUCCESS)
                return (PICL_FAILURE);

        /* get first col, first row */
        if (ptree_get_next_by_col(tblh, &tblh) != PICL_SUCCESS)
                return (PICL_FAILURE);

        /*
         * starting at next col, get every entry in the column
         */
        for (retval = ptree_get_next_by_row(tblh, &tblh);
            retval == PICL_SUCCESS;
            retval = ptree_get_next_by_col(tblh, &tblh)) {
                /*
                 * get the target node handle
                 */
                if (ptree_get_propval(tblh, &nodeh, sizeof (nodeh))
                    != PICL_SUCCESS)
                        continue;

                /*
                 * check it's a led
                 */
                if (ptree_get_propval_by_name(nodeh, PICL_PROP_CLASSNAME,
                    class, sizeof (class)) != PICL_SUCCESS)
                        continue;
                if (strcmp(class, "led") != 0)
                        continue;

                /*
                 * check its the right led
                 */
                if (ptree_get_propval_by_name(nodeh, PICL_PROP_LABEL,
                    label, sizeof (label)) != PICL_SUCCESS)
                        continue;
                if (strcmp(label, ptr) == 0) {
                        /*
                         * set it
                         */
                        if (ptree_get_prop_by_name(nodeh, PICL_PROP_STATE,
                            &proph) != PICL_SUCCESS)
                                continue;
                        if (ptree_get_propinfo(proph, &propinfo) !=
                            PICL_SUCCESS)
                                continue;
                        retval =  ptree_update_propval_by_name(nodeh,
                            PICL_PROP_STATE, value_ptr, propinfo.piclinfo.size);
                        return (retval);
                }
        }
        return (PICL_FAILURE);
}

/*
 * function to find first node of specified class beneath supplied node
 */
static int
get_node_by_class(picl_nodehdl_t nodeh, const char *classname,
    picl_nodehdl_t *foundnodeh)
{
        int             err;
        char            clname[PICL_CLASSNAMELEN_MAX+1];
        picl_nodehdl_t  childh;

        /*
         * go through the children
         */
        err = ptree_get_propval_by_name(nodeh, PICL_PROP_CHILD, &childh,
            sizeof (picl_nodehdl_t));

        while (err == PICL_SUCCESS) {
                err = ptree_get_propval_by_name(childh, PICL_PROP_CLASSNAME,
                    clname, sizeof (clname));

                if ((err == PICL_SUCCESS) && (strcmp(clname, classname) == 0)) {
                        *foundnodeh = childh;
                        return (PICL_SUCCESS);
                }

                err = get_node_by_class(childh, classname, foundnodeh);
                if (err == PICL_SUCCESS)
                        return (PICL_SUCCESS);

                err = ptree_get_propval_by_name(childh, PICL_PROP_PEER,
                    &childh, sizeof (picl_nodehdl_t));
        }

        return (PICL_NODENOTFOUND);
}

/*
 * get system-controller node
 */
static int
get_sys_controller_node(picl_nodehdl_t *nodeh)
{
        int             err;

        /* get platform node */
        err = ptree_get_node_by_path(PICL_NODE_ROOT PICL_NODE_PLATFORM, nodeh);
        if (err != PICL_SUCCESS)
                return (err);
        err = get_node_by_class(*nodeh, PICL_CLASS_SERVICE_PROCESSOR, nodeh);
        return (err);
}

/*
 * create pathname string for system-controller device
 */
static char *
create_sys_controller_pathname(picl_nodehdl_t sysconh)
{
        char            *ptr;
        char            namebuf[PATH_MAX];
        size_t          len;
        DIR             *dirp;
        struct dirent   *dp;
        struct stat     statbuf;

        /*
         * prefix devfs-path name with /devices
         */
        (void) strlcpy(namebuf, DEV_PREFIX, PATH_MAX);

        /*
         * append devfs-path property
         */
        len = strlen(namebuf);
        if (ptree_get_propval_by_name(sysconh, str_devfs_path, namebuf + len,
            sizeof (namebuf) - len) != PICL_SUCCESS) {
                return (NULL);
        }

        /*
         * locate final component of name
         */
        ptr = strrchr(namebuf, '/');
        if (ptr == NULL)
                return (NULL);
        *ptr = '\0';            /* terminate at end of directory path */
        len = strlen(ptr + 1);  /* length of terminal name */
        dirp = opendir(namebuf);
        if (dirp == NULL) {
                return (NULL);
        }
        *ptr++ = '/';           /* restore '/' and advance to final name */

        while ((dp = readdir(dirp)) != NULL) {
                /*
                 * look for a name which starts with the string at *ptr
                 */
                if (strlen(dp->d_name) < len)
                        continue;       /* skip short names */
                if (strncmp(dp->d_name, ptr, len) == 0) {
                        /*
                         * Got a match, restore full pathname and stat the
                         * entry. Reject if not a char device
                         */
                        (void) strlcpy(ptr, dp->d_name,
                            sizeof (namebuf) - (ptr - namebuf));
                        if (stat(namebuf, &statbuf) < 0)
                                continue;       /* reject if can't stat it */
                        if (!S_ISCHR(statbuf.st_mode))
                                continue;       /* not a character device */
                        /*
                         * go with this entry
                         */
                        (void) closedir(dirp);
                        return (strdup(namebuf));
                }
        }
        (void) closedir(dirp);
        return (NULL);
}

/*
 * create pathname string for bezel leds device
 */
static char *
create_bezel_leds_pathname(const char *dirpath, const char *devname)
{
        char            namebuf[PATH_MAX];
        size_t          lendirpath;
        size_t          len;
        DIR             *dirp;
        struct dirent   *dp;
        struct stat     statbuf;

        /*
         * start with directory name
         */
        (void) strlcpy(namebuf, dirpath, PATH_MAX);

        /*
         * append devfs-path property
         */
        lendirpath = strlen(namebuf);
        dirp = opendir(namebuf);
        if (dirp == NULL) {
                return (NULL);
        }

        len = strlen(devname);

        while ((dp = readdir(dirp)) != NULL) {
                /*
                 * look for a name which starts with the gpio string
                 */
                if (strlen(dp->d_name) < len)
                        continue;       /* skip short names */
                if (strncmp(dp->d_name, devname, len) == 0) {
                        /*
                         * Got a match, restore full pathname and stat the
                         * entry. Reject if not a char device
                         */
                        (void) strlcpy(namebuf + lendirpath, dp->d_name,
                            sizeof (namebuf) - lendirpath);
                        if (stat(namebuf, &statbuf) < 0)
                                continue;       /* reject if can't stat it */
                        if (!S_ISCHR(statbuf.st_mode))
                                continue;       /* not a character device */
                        /*
                         * go with this entry
                         */
                        (void) closedir(dirp);
                        return (strdup(namebuf));
                }
        }
        (void) closedir(dirp);
        return (NULL);
}

/*
 * initialise structure associated with nodes requiring OperationalStatus
 */
static void
opst_init(void)
{
        int                     res;
        int                     index = 0;
        int                     fd;
        int                     entries = 0;
        int                     err = 0;
        boolean_t               rmc_flag;
        boolean_t               ps_flag;
        boolean_t               disk_flag;
        size_t                  len;
        envmon_sysinfo_t        sysinfo;
        envmon_hpu_t            hpu;

        if (idprop != NULL) {
                /*
                 * This must be a restart, clean up earlier allocation
                 */
                free(idprop);
                idprop = NULL;
        }

        if (sc_device_name == NULL)
                err = 1;
        else {
                fd = open(sc_device_name, O_RDONLY);

                if (fd < 0) {
                        syslog(LOG_ERR, EM_NO_SC_DEV);
                        err = 1;
                }
        }

        if (err == 0) {
                res = ioctl(fd, ENVMONIOCSYSINFO, &sysinfo);

                if (res < 0) {
                        syslog(LOG_ERR, EM_NO_SYSINFO, strerror(errno));
                        (void) close(fd);
                        err = 1;
                }
        }

        if (err == 0) {
                entries = sysinfo.maxHPU;
                len = offsetof(idp_lkup_t, idp) + entries * sizeof (id_props_t);
                idprop = calloc(len, 1);
                if (idprop == NULL) {
                        (void) close(fd);
                        err = 1;
                }
        }

        if (err == 0) {
                idprop->maxnum = entries;
                hpu.id.name[0] = '\0';  /* request for first name */
                res = ioctl(fd, ENVMONIOCHPU, &hpu);

                /*
                 * The HPU node for the RMC is a special case. Its handle is
                 * generated by the rmclomv driver. Rather than building
                 * knowledge of its frutree hierarchic name into the driver, we
                 * put that knowledge here.
                 */
                while ((res == 0) && (index < entries) &&
                    (hpu.next_id.name[0] != '\0')) {
                        hpu.id = hpu.next_id;
                        res = ioctl(fd, ENVMONIOCHPU, &hpu);
                        if ((res == 0) &&
                            ((hpu.sensor_status & ENVMON_NOT_PRESENT) == 0)) {
                                add_op_status(&hpu, &index);
                        }
                }

                idprop->num = index;
                (void) close(fd);
        }
}

static void
disk_leds_init(void)
{
        int err = 0, i;

        if (!g_mutex_init) {
                if ((pthread_cond_init(&g_cv, NULL) == 0) &&
                    (pthread_cond_init(&g_cv_ack, NULL) == 0) &&
                    (pthread_mutex_init(&g_mutex, NULL) == 0)) {
                        g_mutex_init = B_TRUE;
                } else {
                        return;
                }
        }

        /*
         * Initialise to -1 so the led thread will set correctly.
         * Do this before creating the disk_leds thread,
         * so there's no race.
         */
        for (i = 0; i < N_DISKS; i++)
                disk_ready[i] = -1;

        if (ledsthr_created) {
                /*
                 * this is a restart, wake up sleeping threads
                 */
                err = pthread_mutex_lock(&g_mutex);
                if (err != 0) {
                        syslog(LOG_ERR, EM_MUTEX_FAIL, strerror(errno));
                        return;
                }
                g_finish_now = B_FALSE;
                (void) pthread_cond_broadcast(&g_cv);
                (void) pthread_mutex_unlock(&g_mutex);
        } else {
                if ((pthread_attr_init(&ledsthr_attr) != 0) ||
                    (pthread_attr_setscope(&ledsthr_attr,
                    PTHREAD_SCOPE_SYSTEM) != 0))
                        return;
                if ((err = pthread_create(&ledsthr_tid, &ledsthr_attr,
                    disk_leds_thread, NULL)) != 0) {
                        syslog(LOG_ERR, EM_THREAD_CREATE_FAILED,
                            strerror(errno));
                        return;
                }
                ledsthr_created = B_TRUE;
        }
}

static void
disk_leds_fini(void)
{
        int     err, i;

        /*
         * turn the leds off as we'll no longer be monitoring them
         */
        for (i = 0; i < N_DISKS; i++)
                (void) set_led(disk_name[i], REMOK_LED, PICL_PROPVAL_OFF);

        /*
         * disk_leds_thread() never started or an error occured so
         * that it's not running
         */
        if (!disk_leds_thread_running)
                return;

        /*
         * tell led thread to pause
         */
        if (!ledsthr_created)
                return;
        err = pthread_mutex_lock(&g_mutex);
        if (err != 0) {
                syslog(LOG_ERR, EM_MUTEX_FAIL, strerror(errno));
                return;
        }
        g_finish_now = B_TRUE;
        disk_leds_thread_ack = B_FALSE;
        (void) pthread_cond_broadcast(&g_cv);

        /*
         * and wait for them to acknowledge
         */
        while (!disk_leds_thread_ack) {
                (void) pthread_cond_wait(&g_cv_ack, &g_mutex);
        }
        (void) pthread_mutex_unlock(&g_mutex);
}

static void
update_disk_node(char *fruname, char *devpath)
{
        picl_nodehdl_t slotndh;
        picl_nodehdl_t diskndh;
        picl_nodehdl_t devhdl;
        picl_prophdl_t tblhdl;
        picl_prophdl_t tblhdl2;
        picl_prophdl_t tblproph;
        int err;
        char path[MAXPATHLEN];

        switch (sys_platform)   {
        case PLAT_CHALUPA:
        case PLAT_CHALUPA19:
                sprintf_buf2(path, CHASSIS_LOC_PATH, fruname);
                break;
        case PLAT_SEATTLE1U:
                sprintf_buf2(path, SEATTLE1U_HDDBP_PATH, fruname);
                break;
        case PLAT_SEATTLE2U:
                sprintf_buf2(path, SEATTLE2U_HDDBP_PATH, fruname);
                break;
        case PLAT_BOSTON:
                sprintf_buf2(path, BOSTON_HDDBP_PATH, fruname);
                break;
        default:
                sprintf_buf2(path, CHASSIS_LOC_PATH, fruname);
                break;
        }

        if (ptree_get_node_by_path(path, &slotndh) != PICL_SUCCESS) {
                return;
        }
        diskndh = find_child_by_name(slotndh, DISK_FRU_NAME);
        if (diskndh == NULL) {
                return;
        }
        err = ptree_get_node_by_path(devpath, &devhdl);
        if (err == PICL_SUCCESS) {
                err = ptree_get_propval_by_name(diskndh,
                    PICL_PROP_DEVICES, &tblhdl, sizeof (tblhdl));
                if (err != PICL_SUCCESS)
                        return;
                err = ptree_get_next_by_col(tblhdl, &tblhdl2);
                if (err != PICL_SUCCESS) {
                        err = create_table_entry(tblhdl, devhdl,
                            PICL_CLASS_BLOCK);
                        if (err != PICL_SUCCESS)
                                return;
                        err = add_prop_ref(devhdl, diskndh,
                            PICL_REFPROP_FRU_PARENT);
                        if (err != PICL_SUCCESS)
                                return;
                }
        } else {
                /*
                 * no mechanism for deleting row - so delete
                 * whole table and start again
                 */
                err = ptree_get_prop_by_name(diskndh, PICL_PROP_DEVICES,
                    &tblproph);
                if (err != PICL_SUCCESS)
                        return;
                err = ptree_delete_prop(tblproph);
                if (err != PICL_SUCCESS)
                        return;
                (void) ptree_destroy_prop(tblproph);
                err = create_table(diskndh, &tblhdl, PICL_PROP_DEVICES);
                if (err != PICL_SUCCESS)
                        return;
        }
}

/*
 * We will light the OK2REMOVE LED for disks configured
 * into a raid if (and only if) the driver reports
 * that the disk has failed.
 */
static int
raid_ok2rem_policy(raid_config_t config, int target)
{
        int i;

        for (i = 0; i < config.ndisks; i++) {
                int d = config.disk[i];
                int dstatus = config.diskstatus[i];

                if (d  == target)       {
                        switch (dstatus) {
                        case RAID_DISKSTATUS_MISSING:
                                /* If LED is on, turn it off */
                                if (disk_ready[d] == B_FALSE) {
                                        if (set_led(disk_name[d], REMOK_LED,
                                            PICL_PROPVAL_OFF) == PICL_SUCCESS) {
                                                disk_ready[d] = B_TRUE;
                                        }
                                }
                        break;
                        case RAID_DISKSTATUS_GOOD:
                                if (disk_ready[d] != B_TRUE) {
                                        if (set_led(disk_name[d], REMOK_LED,
                                            PICL_PROPVAL_OFF) == PICL_SUCCESS) {
                                                disk_ready[d] = B_TRUE;
                                        }
                                }
                        break;
                        case RAID_DISKSTATUS_FAILED:
                                if (disk_ready[d] != B_FALSE) {
                                        if (set_led(disk_name[d], REMOK_LED,
                                            PICL_PROPVAL_ON) == PICL_SUCCESS) {
                                                disk_ready[d] = B_FALSE;
                                        }
                                }
                        break;
                        default:
                        break;
                        }
                        return (1);
                }
        }
        return (0);
}

static int
check_raid(int target)
{
        raid_config_t   config;
        int     fd;
        int     numvols;
        int     i, j;

        switch (sys_platform) {
        case PLAT_CHALUPA:
        case PLAT_CHALUPA19:
                fd = open(V440_DISK_DEVCTL, O_RDONLY);
                break;
        case PLAT_SEATTLE1U:
        case PLAT_SEATTLE2U:
                fd = open(SEATTLE_DISK_DEVCTL, O_RDONLY);
                break;
        case PLAT_BOSTON:
                if (boston_1068e_flag) {
                        fd = open(BOSTON_DISK_DEVCTL_1068E, O_RDONLY);
                } else {
                        fd = open(BOSTON_DISK_DEVCTL_1068X, O_RDONLY);
                }
                break;
        default:
                fd = -1;
                break;
        }

        if (fd == -1) {
                return (0);
        }

        if (ioctl(fd, RAID_NUMVOLUMES, &numvols)) {
                (void) close(fd);
                return (0);
        }

        for (i = 0; i < numvols; i++)   {
                config.unitid = i;
                if (ioctl(fd, RAID_GETCONFIG, &config)) {
                        (void) close(fd);
                        return (0);
                }
                if (raid_ok2rem_policy(config, target)) {
                        (void) close(fd);
                        return (1);
                }
        }

        (void) close(fd);
        return (0);
}

/*ARGSUSED*/
static void *
disk_leds_thread(void *args)
{
        int     c;
        int     i;
        char    **disk_dev;
        int fd;

        devctl_hdl_t dhdl;

        int     n_disks = 0,
            do_raid = 0,
            err         = 0;
        uint_t  statep  = 0;

        static char *mpxu_devs[] = {
                "/pci@1c,600000/scsi@2/sd@0,0",
                "/pci@1c,600000/scsi@2/sd@1,0",
                "/pci@1c,600000/scsi@2/sd@2,0",
                "/pci@1c,600000/scsi@2/sd@3,0"
        };

        static char *ents_devs[] = {
                "/pci@1d,700000/scsi@4/sd@0,0",
                "/pci@1d,700000/scsi@4/sd@1,0",
                "/pci@1d,700000/scsi@4/sd@2,0",
                "/pci@1d,700000/scsi@4/sd@3,0",
                "/pci@1d,700000/scsi@4/sd@8,0",
                "/pci@1d,700000/scsi@4/sd@9,0",
                "/pci@1d,700000/scsi@4/sd@a,0",
                "/pci@1d,700000/scsi@4/sd@b,0"
        };

        static char *v440_devs[] = {
                "/pci@1f,700000/scsi@2/sd@0,0",
                "/pci@1f,700000/scsi@2/sd@1,0",
                "/pci@1f,700000/scsi@2/sd@2,0",
                "/pci@1f,700000/scsi@2/sd@3,0"
        };

        static char *n210_devs[] = {
                "/pci@1c,600000/LSILogic,sas@1/sd@0,0",
                "/pci@1c,600000/LSILogic,sas@1/sd@1,0"
        };

        static char *seattle_devs[] = {
                "/pci@1e,600000/pci@0/pci@a/pci@0/pci@8/scsi@1/sd@0,0",
                "/pci@1e,600000/pci@0/pci@a/pci@0/pci@8/scsi@1/sd@1,0",
                "/pci@1e,600000/pci@0/pci@a/pci@0/pci@8/scsi@1/sd@2,0",
                "/pci@1e,600000/pci@0/pci@a/pci@0/pci@8/scsi@1/sd@3,0"
        };

        static char *boston_devs_1068e[] = {
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@0,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@1,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@2,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@3,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@4,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@5,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@6,0",
                "/pci@1e,600000/pci@0/pci@2/scsi@0/sd@7,0"
        };
        static char *boston_devs_1068x[] = {
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@0,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@1,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@2,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@3,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@4,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@5,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@6,0",
                "/pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@7,0"
        };

        char    *ddev[N_DISKS];         /* "/devices"  */
        char    *pdev[N_DISKS];         /* "/platform" */

        switch (sys_platform) {

        case PLAT_ENTS:
                disk_dev = ents_devs;
                n_disks = N_ENTS_DISKS;
                break;

        case PLAT_CHALUPA:
        case PLAT_CHALUPA19:
                do_raid = 1;
                disk_dev = v440_devs;
                n_disks = N_CHALUPA_DISKS;
                break;

        case PLAT_SALSA19:
                disk_dev = n210_devs;
                n_disks = N_EN19_DISKS;
                break;

        case PLAT_SEATTLE1U:
        case PLAT_SEATTLE2U:
                do_raid = 1;
                disk_dev = seattle_devs;
                n_disks = (sys_platform == PLAT_SEATTLE1U) ?
                    N_SEATTLE1U_DISKS : N_SEATTLE2U_DISKS;
                break;

        case PLAT_BOSTON:
                /*
                 * If we can open the devctl path for the built-in 1068E
                 * controller then assume we're a 1068E-equipped Boston
                 * and make all the paths appropriate for that hardware.
                 * Otherwise assume we are a 1068X-equipped Boston and
                 * make all of the paths appropriate for a 1068X PCI-X
                 * controller in PCI slot 4.
                 *
                 * The flag is also used in the check_raid() function.
                 */
                if ((fd = open(BOSTON_DISK_DEVCTL_1068E, O_RDONLY)) != -1) {
                        boston_1068e_flag = 1;
                        disk_dev = boston_devs_1068e;
                } else {
                        boston_1068e_flag = 0;
                        disk_dev = boston_devs_1068x;
                }
                (void) close(fd);
                do_raid = 1;
                n_disks = N_BOSTON_DISKS;
                break;

        default: /* PLAT_ENXS/PLAT_EN19 */
                disk_dev = mpxu_devs;
                n_disks = (sys_platform == PLAT_EN19) ?
                    N_EN19_DISKS : N_MPXU_DISKS;
        }

        /*
         * make up disk names
         */

        for (i = 0; i < n_disks; i++) {
                char buffer[MAXPATHLEN];
                sprintf(buffer, "/devices%s", disk_dev[i]);
                ddev[i] = strdup(buffer);
                sprintf(buffer, "/platform%s", disk_dev[i]);
                pdev[i] = strdup(buffer);
        }

        disk_leds_thread_running = B_TRUE;

        for (;;) {
                for (i = 0; i < n_disks; i++) {
                        /*
                         * If it's one of the RAID disks, we have already
                         * applied the ok2remove policy.
                         */
                        if (do_raid && check_raid(i))   {
                                continue;
                        }

                        dhdl = devctl_device_acquire(ddev[i], 0);
                        devctl_device_getstate(dhdl, &statep);
                        devctl_release(dhdl);

                        if (statep & DEVICE_OFFLINE) {
                                if (disk_ready[i] != B_FALSE) {
                                        update_disk_node(disk_name[i], pdev[i]);
                                        if (set_led(disk_name[i], REMOK_LED,
                                            PICL_PROPVAL_ON) == PICL_SUCCESS)
                                                disk_ready[i] = B_FALSE;
                                }
                        } else if (statep & DEVICE_ONLINE) {
                                if (disk_ready[i] != B_TRUE) {
                                        update_disk_node(disk_name[i], pdev[i]);
                                        if (set_led(disk_name[i], REMOK_LED,
                                            PICL_PROPVAL_OFF) == PICL_SUCCESS)
                                                disk_ready[i] = B_TRUE;
                                }
                        }
                }

                /*
                 * wait a bit until we check again
                 */

                (void) poll(NULL, 0, DISK_POLL_TIME);

                /*
                 * are we to stop?
                 */

                (void) pthread_mutex_lock(&g_mutex);

                while (g_finish_now) {
                        /*
                         * notify _fini routine that we've paused
                         */
                        disk_leds_thread_ack = B_TRUE;
                        (void) pthread_cond_signal(&g_cv_ack);

                        /*
                         * and go to sleep in case we get restarted
                         */
                        (void) pthread_cond_wait(&g_cv, &g_mutex);
                }
                (void) pthread_mutex_unlock(&g_mutex);
        }

        return ((void *)err);
}

/*
 * Given the powersupply name, convert to addr
 */
static int
ps_name_to_addr(char *name)
{
        int ps_addr = 0;
        if ((strcmp(name, PS0_NAME) == 0) ||
            (strcmp(name, PSU0_NAME) == 0))     {
                switch (sys_platform) {
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                        ps_addr = SEATTLE_PS0_ADDR;
                        break;
                case PLAT_BOSTON:
                        ps_addr = BOSTON_PS0_ADDR;
                        break;
                default:
                        ps_addr = PS0_ADDR;
                        break;
                }
        } else if ((strcmp(name, PS1_NAME) == 0) ||
            (strcmp(name, PSU1_NAME) == 0))     {
                switch (sys_platform) {
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                        ps_addr = SEATTLE_PS1_ADDR;
                        break;
                case PLAT_BOSTON:
                        ps_addr = BOSTON_PS1_ADDR;
                        break;
                default:
                        ps_addr = PS1_ADDR;
                        break;
                }
        } else if ((strcmp(name, PS2_NAME) == 0) ||
            (strcmp(name, PSU2_NAME) == 0))     {
                switch (sys_platform) {
                case PLAT_BOSTON:
                        ps_addr = BOSTON_PS2_ADDR;
                        break;
                default:
                        ps_addr = PS2_ADDR;
                        break;
                }
        } else if ((strcmp(name, PS3_NAME) == 0) ||
            (strcmp(name, PSU3_NAME) == 0))     {
                switch (sys_platform) {
                case PLAT_BOSTON:
                        ps_addr = BOSTON_PS3_ADDR;
                        break;
                default:
                        ps_addr = PS3_ADDR;
                        break;
                }
        }

        return (ps_addr);
}

/*
 * Given powersupply name, convert to unit addr
 */
static char *
ps_name_to_unitaddr(char *name)
{
        char *unitaddr;

        if (strcmp(name, PS0_NAME) == 0)        {
                switch (sys_platform) {
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                        unitaddr = SEATTLE_PS0_UNITADDR;
                        break;
                case PLAT_BOSTON:
                        unitaddr = BOSTON_PS0_UNITADDR;
                        break;
                default:
                        unitaddr = PS0_UNITADDR;
                        break;
                }
        } else if (strcmp(name, PS1_NAME) == 0) {
                switch (sys_platform) {
                case PLAT_SEATTLE1U:
                case PLAT_SEATTLE2U:
                        unitaddr = SEATTLE_PS1_UNITADDR;
                        break;
                case PLAT_BOSTON:
                        unitaddr = BOSTON_PS1_UNITADDR;
                        break;
                default:
                        unitaddr = PS1_UNITADDR;
                        break;
                }
        } else if (strcmp(name, PS2_NAME) == 0) {
                switch (sys_platform) {
                case PLAT_BOSTON:
                        unitaddr = BOSTON_PS2_UNITADDR;
                        break;
                default:
                        unitaddr = PS2_UNITADDR;
                        break;
                }
        } else if (strcmp(name, PS3_NAME) == 0) {
                switch (sys_platform) {
                case PLAT_BOSTON:
                        unitaddr = BOSTON_PS3_UNITADDR;
                        break;
                default:
                        unitaddr = PS3_UNITADDR;
                        break;
                }
        }
        else
                unitaddr = NULL;

        return (unitaddr);
}

/*
 * converts apid to real FRU name in PICL tree. The
 * name of powersupply devices on chalupa19 are
 * PSU instead of PS
 */
static char *
ps_apid_to_nodename(char *apid)
{
        char *nodename;

        if (sys_platform != PLAT_CHALUPA19)
                return (apid);

        if (strcmp(apid, PS0_NAME) == 0)
                nodename = PSU0_NAME;
        else if (strcmp(apid, PS1_NAME) == 0)
                nodename = PSU1_NAME;
        else if (strcmp(apid, PS2_NAME) == 0)
                nodename = PSU2_NAME;
        else if (strcmp(apid, PS3_NAME) == 0)
                nodename = PSU3_NAME;
        else
                nodename = apid;

        return (nodename);
}

/*
 * Create SEEPROM node at insertion time.
 */
static int
create_i2c_node(char *ap_id)
{
        int     nd_reg[2];
        devctl_ddef_t   ddef_hdl;
        devctl_hdl_t    bus_hdl;
        devctl_hdl_t    dev_hdl;
        char            dev_path[MAXPATHLEN];
        char            *compatible;

        /* create seeprom node */
        nd_reg[0] = 0;
        nd_reg[1] = ps_name_to_addr(ap_id);

        switch (sys_platform) {
        case PLAT_SEATTLE1U:
        case PLAT_SEATTLE2U:
                bus_hdl = devctl_bus_acquire(SEATTLE_PSU_I2C_BUS_DEV, 0);
                compatible = SEATTLE_PSU_COMPATIBLE;
                break;
        case PLAT_BOSTON:
                bus_hdl = devctl_bus_acquire(BOSTON_PSU_I2C_BUS_DEV, 0);
                compatible = BOSTON_PSU_COMPATIBLE;
                break;
        default:
                bus_hdl = devctl_bus_acquire(PSU_I2C_BUS_DEV, 0);
                compatible = PSU_COMPATIBLE;
                break;
        }

        if (bus_hdl == NULL)
                return (DDI_FAILURE);

        /* device definition properties */
        ddef_hdl = devctl_ddef_alloc(PS_DEVICE_NAME, 0);
        (void) devctl_ddef_string(ddef_hdl, "compatible", compatible);
        (void) devctl_ddef_string(ddef_hdl, "device_type", "seeprom");
        (void) devctl_ddef_int_array(ddef_hdl, "reg", 2, nd_reg);

        /* create the device node */
        if (devctl_bus_dev_create(bus_hdl, ddef_hdl, 0, &dev_hdl))
                return (DDI_FAILURE);

        if (devctl_get_pathname(dev_hdl, dev_path, MAXPATHLEN) == NULL)
                return (DDI_FAILURE);

        devctl_release(dev_hdl);
        devctl_ddef_free(ddef_hdl);
        devctl_release(bus_hdl);
        return (DDI_SUCCESS);
}

/*
 * Delete SEEPROM node at insertion time.
 */
static void
delete_i2c_node(char *ap_id)
{
        devctl_hdl_t    dev_hdl;
        char    buf[MAXPATHLEN];

        switch (sys_platform) {
        case PLAT_SEATTLE1U:
        case PLAT_SEATTLE2U:
                sprintf_buf2(buf, SEATTLE_PSU_DEV, ps_name_to_addr(ap_id));
                break;
        case PLAT_BOSTON:
                sprintf_buf2(buf, BOSTON_PSU_DEV, ps_name_to_addr(ap_id));
                break;
        default:
                sprintf_buf2(buf, PSU_DEV, ps_name_to_addr(ap_id));
                break;
        }

        dev_hdl = devctl_device_acquire(buf, 0);
        if (dev_hdl == NULL) {
                return;
        }

        /*
         * If the seeprom driver is not loaded, calls to
         * devctl_device_remove fails for seeprom devices
         */
        if (devctl_device_remove(dev_hdl)) {
                di_init_driver(SEEPROM_DRIVER_NAME, 0);
                devctl_device_remove(dev_hdl);
        }
        devctl_release(dev_hdl);
}

static void
add_op_status(envmon_hpu_t *hpu, int *index)
{
        boolean_t               rmc_flag;
        boolean_t               ps_flag;
        boolean_t               disk_flag;
        char                    node_name[MAXPATHLEN];
        boolean_t               flag;

        rmc_flag = (strcmp(hpu->id.name, RMC_NAME) == 0);
        ps_flag = (strncmp(hpu->id.name, PS_NAME,
            PS_NAME_LEN) == 0);
        disk_flag = (strncmp(hpu->id.name, DISK_NAME,
            DISK_NAME_LEN) == 0);
        if (rmc_flag || ps_flag) {
                idprop->idp[*index].envhandle = hpu->id;
                flag = rmc_flag && ((sys_platform != PLAT_CHALUPA) &&
                    (sys_platform != PLAT_CHALUPA19));
                sprintf_buf2(node_name,
                    flag ? SYS_BOARD_PATH : CHASSIS_LOC_PATH, ps_flag ?
                    ps_apid_to_nodename(hpu->id.name) : hpu->id.name);

                add_op_status_by_name(node_name, ps_flag ? PS_FRU_NAME : NULL,
                    &idprop->idp[(*index)++].volprop);
        } else if (disk_flag)   {
                idprop->idp[*index].envhandle = hpu->id;
                switch (sys_platform)   {
                case PLAT_CHALUPA:
                case PLAT_CHALUPA19:
                        sprintf_buf2(node_name, CHASSIS_LOC_PATH, hpu->id.name);
                        break;
                case PLAT_SEATTLE1U:
                        sprintf_buf2(node_name, SEATTLE1U_HDDBP_PATH, \
                            hpu->id.name);
                        break;
                case PLAT_SEATTLE2U:
                        sprintf_buf2(node_name, SEATTLE2U_HDDBP_PATH, \
                            hpu->id.name);
                        break;
                case PLAT_BOSTON:
                        sprintf_buf2(node_name, BOSTON_HDDBP_PATH, \
                            hpu->id.name);
                        break;
                default:
                        sprintf_buf2(node_name, SYS_BOARD_PATH, hpu->id.name);
                        break;
                }
                add_op_status_by_name(node_name, DISK_FRU_NAME,
                    &idprop->idp[(*index)++].volprop);
        }
}