cmd: remove sparc-only virtinfo

[unleashed.git] / usr / src / cmd / picl / plugins / sun4u / lw8 / frutree / piclfrutree.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 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I%     %E% SMI"

/*
 * This plugin-in creates the FRU Hierarchy for the
 * SUNW,Netra-T12 platform and manages the environmental sensors
 * on the platform.
 */

#include <stdio.h>
#include <errno.h>
#include <syslog.h>
#include <strings.h>
#include <libintl.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <picl.h>
#include <picltree.h>
#include <sys/stat.h>
#include <libnvpair.h>
#include <sys/param.h>
#include <kstat.h>
#include <config_admin.h>
#include <sys/sbd_ioctl.h>
#include <sys/sgfrutree.h>
#include <sys/sgenv.h>
#include <sys/ioccom.h>
#include <sys/lw8.h>
#include <sys/sysevent/dr.h>
#include <pthread.h>
#include <sys/obpdefs.h>
#include "libdevice.h"
#include "picldefs.h"
#define NDEBUG
#include <assert.h>

/*
 * Plugin registration entry points
 */
static void     piclfrutree_register(void);
static void     piclfrutree_init(void);
static void     piclfrutree_fini(void);
#pragma init(piclfrutree_register)

static picld_plugin_reg_t  my_reg_info = {
        PICLD_PLUGIN_VERSION_1,
        PICLD_PLUGIN_CRITICAL,
        "SUNW_Netra-T12_frutree",
        piclfrutree_init,
        piclfrutree_fini,
};

/*
 * Log message texts
 */
#define DEV_OPEN_FAIL gettext("piclfrutree_init: open of %s failed: %s")
#define ADD_NODES_FAIL gettext("piclfrutree_init: add_all_nodes failed: %d")
#define GET_ROOT_FAIL gettext("piclfrutree_init: ptree_get_root failed")
#define ADD_FRUTREE_FAIL gettext("piclfrutree_init: add frutree failed")
#define INVALID_PICL_CLASS gettext("add_subtree: invalid picl class 0x%x")
#define ADD_NODE_FAIL gettext("ptree_create_and_add_node %s failed: %d")
#define GET_NEXT_BY_ROW_FAIL gettext("ptree_get_next_by_row %s failed: %d")
#define PROPINFO_FAIL gettext("ptree_init_propinfo %s failed: %d")
#define GET_PROPVAL_FAIL gettext("ptree_get_propval failed: %d")
#define DELETE_PROP_FAIL gettext("ptree_delete_prop failed: %d")
#define DELETE_NODE_FAIL gettext("ptree_delete_node failed: %d")
#define ADD_PROP_FAIL gettext("ptree_create_and_add_prop %s failed: %d")
#define SGFRU_IOCTL_FAIL gettext("sgfru ioctl 0x%x handle 0x%llx failed: %s")
#define LED_IOCTL_FAIL gettext("led ioctl failed: %s")
#define MALLOC_FAIL gettext("piclfrutree: malloc failed")
#define NO_SC_FAIL gettext("piclfrutree: cannot find sc node")
#define NO_NODE_FAIL gettext("piclfrutree: cannot find node %s: %d")
#define KSTAT_FAIL gettext("piclfrutree: failure accessing kstats")
#define ADD_TBL_ENTRY_FAIL gettext("piclfrutree: cannot add entry to table")
#define PROP_LOOKUP_FAIL gettext("piclfrutree: cannot find %s property: %d")
#define EM_DI_INIT_FAIL gettext("frutree: di_init failed: %s")
#define EM_THREAD_CREATE_FAILED gettext("frutree: pthread_create failed: %s")
#define EM_MUTEX_FAIL gettext("frutree: pthread_mutex_lock returned: %s")
#define EM_POLL_FAIL gettext("frutree: poll() failed: %s")
#define DEVCTL_DEVICE_ACQUIRE_FAILED \
    gettext("frutree: devctl_device_acquire() failed: %s")

/*
 * PICL property values
 */
#define PICL_PROPVAL_TRUE               "true"
#define PICL_PROPVAL_SYSTEM             "system"
#define PICL_PROPVAL_ON                 "ON"
#define PICL_PROPVAL_OFF                "OFF"
#define PICL_PROPVAL_BLINKING           "BLINKING"
#define PICL_PROPVAL_FLASHING           "FLASHING"
#define PICL_PROPVAL_CHASSIS            "chassis"
#define PICL_PROPVAL_AMBIENT            "Ambient"
#define PICL_PROPVAL_DIE                "Die"
#define PICL_PROPVAL_GREEN              "green"
#define PICL_PROPVAL_AMBER              "amber"
#define PICL_PROPVAL_OKAY               "okay"
#define PICL_PROPVAL_FAILED             "failed"
#define PICL_PROPVAL_WARNING            "warning"
#define PICL_PROPVAL_DISABLED           "disabled"
#define PICL_PROPVAL_UNKNOWN            "unknown"
#define PICL_PROPVAL_SELF_REGULATING    "self-regulating"
#define PICL_PROPVAL_PER_CENT           "%"
#define PICL_PROP_BANK_STATUS           "bank-status"

/*
 * PICL property names
 */
#define PICL_PROP_LOW_WARNING_THRESHOLD "LowWarningThreshold"

/*
 * Local defines
 */
#define MAX_LINE_SIZE           1024
#define MAX_TRIES               4
#define MAX_SPEED_UNIT_LEN      20
#define MAX_OPERATIONAL_STATUS_LEN      10
#define MAX_CONDITION_LEN       10
#define MAX_LABEL_LEN           256
#define MAX_STATE_LEN           10
#define MAX_STATE_SIZE          32
#define LED_PSEUDO_DEV "/devices/pseudo/lw8@0:lw8"
#define SC_DEV "/platform/ssm@0,0/pci@18,700000/bootbus-controller@4"
#define SC_DEV_PCIX "/platform/ssm@0,0/pci@18,700000/pci@4/bootbus-controller@3"
#define CPU_DEV "/platform/ssm@0,0/SUNW,UltraSPARC-III@%x,0"
#define CPU_DEV2 "/platform/ssm@0,0/SUNW,UltraSPARC-III+@%x,0"
#define CPU_DEV3C0 "/platform/ssm@0,0/cmp@%x,0/cpu@0"
#define CPU_DEV3C1 "/platform/ssm@0,0/cmp@%x,0/cpu@1"
#define MEMORY_DEV "/platform/ssm@0,0/memory-controller@%x,400000"
#define IO_DEV "/platform/ssm@0,0/pci@%s"
#define DISK0_BASE_PATH "/ssm@0,0/pci@18,600000/scsi@2/sd@0,0"
#define DISK0_DEV "/platform" DISK0_BASE_PATH
#define DISK1_BASE_PATH "/ssm@0,0/pci@18,600000/scsi@2/sd@1,0"
#define DISK1_DEV "/platform" DISK1_BASE_PATH
#define DISK0_BASE_PATH_PCIX "/ssm@0,0/pci@18,700000/scsi@2/sd@0,0"
#define DISK0_DEV_PCIX "/platform" DISK0_BASE_PATH_PCIX
#define DISK1_BASE_PATH_PCIX "/ssm@0,0/pci@18,700000/scsi@2/sd@1,0"
#define DISK1_DEV_PCIX "/platform" DISK1_BASE_PATH_PCIX
#define TAPE_DEV "/platform/ssm@0,0/pci@18,600000/scsi@2/st@5,0"
#define TAPE_DEV_PCIX "/platform/ssm@0,0/pci@18,700000/scsi@2/st@5,0"
#define DVD_DEV "/platform/ssm@0,0/pci@18,700000/ide@3/sd@0,0"
#define DVD_DEV_PCIX "/platform/ssm@0,0/pci@18,700000/pci@4/ide@2/sd@0,0"
#define CHASSIS_PATH "/frutree/chassis"
#define CHASSIS_LOC_PATH "/frutree/chassis/%s"
#define PROC_LOC_PATH "/frutree/chassis/SB%d/SB%d/P%d"
#define PROC_FRU_PATH "/frutree/chassis/SB%d/SB%d/P%d/P%d"
/*
 * Calculate safari address to put in CPU_DEV/MEMORY_DEV string based on
 * SBx/Py fru path name
 */
#define SB_P_TO_SAFARI_ADDR(sbname, pname) \
        ((pname[1] - '0') + (4 * (sbname[2] - '0')))
#define SAFARI_ADDR_TO_SB(value) (value >> 2)
#define SAFARI_ADDR_TO_P(value) (value & 3)
#define AP_ID_PREAMBLE "ssm0:N0."
#define AP_ID_PREAMBLE_LEN 8
#define LABEL_PREAMBLE "N0/"
#define LABEL_PREAMBLE_LEN 3
/*
 * work out type of fru based on name
 */
#define IS_ECACHE_NODE(name)    (name[0] == 'E')
#define IS_DIMM_NODE(name)      (name[0] == 'D' && name[1] != 'V')
#define IS_PROC_NODE(name)      (name[0] == 'P' && name[1] != 'S')
#define IS_PSU_NODE(name)       (name[0] == 'P' && name[1] == 'S')
#define IS_SB_NODE(name)        (name[0] == 'S' && name[1] == 'B')
#define IS_IB_NODE(name)        (name[0] == 'I')
#define IS_FT_NODE(name)        (name[0] == 'F' && name[1] == 'T')
#define IS_FAN_NODE(name)       (name[0] == 'F' && name[1] != 'T')
#define IS_RP_NODE(name)        (name[0] == 'R')
/*
 * rename sgfru driver's node_t to sgfrunode_t to avoid confusion
 */
#define sgfrunode_t node_t

/*
 * disk_led data
 */
#define REMOK_LED "ok_to_remove"
#define FAULT_LED "fault"
#define POWER_LED "power"

/*
 * 'struct lw8_disk' contains the per-disk metadata needed to
 * manage the current state of one of the internal disks.
 *
 * 'lw8_disks[]' is an array that contains the metadata
 * for N_DISKS disks.
 *
 * The d_fruname field of 'struct lw8_disk' is static.
 * d_plat_path and d_devices_path are aliases for device-paths
 * to the disk.  They are logically static, as they are computed
 * when the disk_leds_thread() thread does its initialization.
 *
 * d_state is the most interesting field, as it changes
 * dynamically, based on whether the associated disk
 * is currently Configured or Unconfigured (by DR).  d_state
 * is an optimization that minimizes per-disk actions such
 * as setting of LEDs and updating the FRU Tree.
 *
 * A disk starts in a d_state of DISK_STATE_NOT_INIT
 * and moves to DISK_STATE_READY when the disk is
 * Configured (by DR) and it moves to DISK_STATE_NOT_READY
 * when it is Unconfigured (by DR).
 */
typedef enum {
        DISK_STATE_NOT_INIT,
        DISK_STATE_READY,
        DISK_STATE_NOT_READY
} disk_state_t;

struct lw8_disk {
        char            *d_fruname;             /* FRU name */
        char            *d_plat_path;           /* /platform */
        char            *d_devices_path;        /* /devices */
        disk_state_t    d_state;
};

#define N_DISKS 2
static  struct lw8_disk lw8_disks[N_DISKS] = {
        {"DISK0", NULL, NULL, DISK_STATE_NOT_INIT},
        {"DISK1", NULL, NULL, DISK_STATE_NOT_INIT} };

/* Duration of inactivity within disk_leds_thread() */
#define THR_POLL_PERIOD 5000    /* milliseconds */

static volatile boolean_t       disk_leds_thread_ack = B_FALSE;
static pthread_t                ledsthr_tid;
static pthread_attr_t           ledsthr_attr;
static boolean_t                ledsthr_created = B_FALSE;
static uint_t                   ledsthr_poll_period =
                                    THR_POLL_PERIOD;
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_wait_now = B_FALSE;

static void disk_leds_init(void);
static void disk_leds_fini(void);
static void *disk_leds_thread(void *args);

/*
 * Tables to convert sgenv information
 */
static char *hpu_type_table[] = { "", "SSC", "SB", "RP", "FT",
        "IB", "PS", "ID"};
static char *hpu_fru_type_table[] = { "", "SSC", "CPU", "RP", "FT",
        "PCIB", "PS", "ID"};
static char *hpu_part_table[] = { "", "sbbc", "sdc",
        "ar", "cbh", "dx", "cheetah", "1.5vdc", "3.3vdc",
        "5vdc", "12vdc", "output", "current", "board", "sc-app",
        "schizo", "fan", "input"};
static char *hpu_sensor_table[] = { "", "", "current",
        "temp", "cooling", "1.5vdc", "1.8vdc", "3.3vdc", "5vdc",
        "12vdc", "48vdc", NULL, "2.4vdc"};
static char *hpu_sensor_class_table[] = { "", "", PICL_CLASS_CURRENT_SENSOR,
        PICL_CLASS_TEMPERATURE_SENSOR, PICL_CLASS_FAN,
        PICL_CLASS_VOLTAGE_SENSOR, PICL_CLASS_VOLTAGE_SENSOR,
        PICL_CLASS_VOLTAGE_SENSOR, PICL_CLASS_VOLTAGE_SENSOR,
        PICL_CLASS_VOLTAGE_SENSOR, PICL_CLASS_VOLTAGE_INDICATOR,
        NULL, PICL_CLASS_VOLTAGE_SENSOR};
static char *hpu_sensor_prop_table[] = { "", "", PICL_PROP_CURRENT,
        PICL_PROP_TEMPERATURE, PICL_PROP_FAN_SPEED, PICL_PROP_VOLTAGE,
        PICL_PROP_VOLTAGE, PICL_PROP_VOLTAGE, PICL_PROP_VOLTAGE,
        PICL_PROP_VOLTAGE, PICL_PROP_CONDITION, NULL, PICL_PROP_VOLTAGE};
static char *hpu_condition_table[] = {"unknown", "okay", "failing",
        "failed", "unusable"};

/*
 * variables set up in init
 */
static picl_nodehdl_t   frutreeh;
static picl_nodehdl_t   sch = NULL;
static int init_complete;
static int pcix_io = 0;

/*
 * forward reference
 */
static int add_all_nodes(void);
static int remove_subtree(picl_nodehdl_t parh);
static int add_subtree(picl_nodehdl_t parh, fru_hdl_t fruparent);
static int add_picl_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp);
static int add_chassis_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp);
static int add_fru_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp);
static int add_location_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp);
static int add_led_nodes(picl_nodehdl_t nodeh, char *name, int position,
    picl_prophdl_t tblhdl);
static int add_env_nodes(picl_nodehdl_t nodeh, char *nodename,
    picl_prophdl_t tblhdl);
static int add_intermediate_nodes(picl_nodehdl_t *nodep, char *labelp,
    picl_prophdl_t *tblhdlp, char *slot_name, char *fru_name);
static int add_intermediate_location(picl_nodehdl_t *nodep, char *labelp,
    char *slot_name);
static int add_pci_location(picl_nodehdl_t childh, char *parent_addr,
    char bus_addr, char *slot_name);
static picl_nodehdl_t find_child_by_name(picl_nodehdl_t parh, char *name);
static int create_dimm_references(picl_nodehdl_t parh, int dimm_id,
    picl_nodehdl_t nodeh, picl_prophdl_t tblhdl);
static int create_cpu_references(char *pname, picl_nodehdl_t nodeh,
    picl_prophdl_t tblhdl);
static void post_frudr_event(char *ename, picl_nodehdl_t parenth,
    picl_nodehdl_t fruh);
static int remove_references(picl_prophdl_t refprop, char *class);
static int remove_picl_node(picl_nodehdl_t nodeh);
static sgfrunode_t *get_node_children(fru_hdl_t fruparent, int *num_childrenp);
static int add_prop_ull(picl_nodehdl_t nodeh, uint64_t handle, char *name);
static int add_prop_void(picl_nodehdl_t nodeh, char *name);
static int add_prop_ref(picl_nodehdl_t nodeh, picl_nodehdl_t value, char *name);
static int add_prop_int(picl_nodehdl_t nodeh, int value, char *name);
static int add_prop_float(picl_nodehdl_t nodeh, float value, char *name);
static int add_prop_charstring(picl_nodehdl_t nodeh, char *value, char *name);
static void frudr_evhandler(const char *ename, const void *earg,
    size_t size, void *cookie);
static void frumemcfg_evhandler(const char *ename, const void *earg,
    size_t size, void *cookie);
static int add_sensor_prop(picl_nodehdl_t nodeh, char *class);
static int add_sensor_node(picl_nodehdl_t fruhdl, picl_nodehdl_t lochdl,
    char *nodename, char *class, char *prop_class,
    picl_prophdl_t tblhdl, picl_nodehdl_t *sensorhdlp);
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 get_sensor_data(ptree_rarg_t *arg, void *result);
static int get_led(char *name, char *ptr, char *result);
static int get_led_data(ptree_rarg_t *arg, void *result);
static int set_led_data(ptree_warg_t *arg, const void *value);
static int get_cpu_status(ptree_rarg_t *arg, void *result);
static int add_board_status(picl_nodehdl_t nodeh, char *nodename);
static int get_board_status(ptree_rarg_t *arg, void *result);
static int get_op_status(ptree_rarg_t *arg, void *result);

#define sprintf_buf2(buf, a1, a2) (void) snprintf(buf, sizeof (buf), a1, a2)
#define sprintf_buf3(buf, a1, a2, a3) \
        (void) snprintf(buf, sizeof (buf), a1, a2, a3)
#define sprintf_buf4(buf, a1, a2, a3, a4) \
        (void) snprintf(buf, sizeof (buf), a1, a2, a3, a4)
#define sprintf_buf5(buf, a1, a2, a3, a4, a5) \
        (void) snprintf(buf, sizeof (buf), a1, a2, a3, a4, a5)
/*
 * This function is executed as part of .init when the plugin is
 * dlopen()ed
 */
static void
piclfrutree_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
piclfrutree_init(void)
{
        int err;

        (void) ptree_register_handler(PICLEVENT_DR_AP_STATE_CHANGE,
            frudr_evhandler, NULL);
        (void) ptree_register_handler(PICLEVENT_MC_ADDED,
            frumemcfg_evhandler, NULL);
        (void) ptree_register_handler(PICLEVENT_MC_REMOVED,
            frumemcfg_evhandler, NULL);
        init_complete = 0;

        err = add_all_nodes();
        disk_leds_init();
        init_complete = 1;
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODES_FAIL, err);
                piclfrutree_fini();
        }
}

/*
 * This function is the fini entry point of the plugin.
 */
static void
piclfrutree_fini(void)
{
        (void) ptree_unregister_handler(PICLEVENT_DR_AP_STATE_CHANGE,
            frudr_evhandler, NULL);
        (void) ptree_unregister_handler(PICLEVENT_MC_ADDED,
            frumemcfg_evhandler, NULL);
        (void) ptree_unregister_handler(PICLEVENT_MC_REMOVED,
            frumemcfg_evhandler, NULL);
        (void) remove_subtree(frutreeh);
        disk_leds_fini();
}

/*
 * called from piclfrutree_init() to initialise picl frutree
 */
static int
add_all_nodes(void)
{
        int err;
        picl_nodehdl_t rooth;

        /* Get the root node of the PICL tree */
        err = ptree_get_root(&rooth);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, GET_ROOT_FAIL);
                return (err);
        }

        /* find sc node so we can create sensor nodes under it */

        err = ptree_get_node_by_path(SC_DEV, &sch);
        if (err != PICL_SUCCESS) {

                /*
                 * There is a XMITS/PCI-X IO Board assembly implements
                 * a different path for the the bootbus controller.
                 */
                err = ptree_get_node_by_path(SC_DEV_PCIX, &sch);
                if (err == PICL_SUCCESS)
                        pcix_io = 1;
        }

        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, NO_SC_FAIL);
                return (err);
        }

        /* Create and add the root node of the FRU subtree */
        err = ptree_create_and_add_node(rooth, PICL_NODE_FRUTREE,
            PICL_CLASS_PICL, &frutreeh);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_FRUTREE_FAIL);
                return (err);
        }

        /* Recursively query the SC and add frutree nodes */
        return (add_subtree(frutreeh, ROOTPARENT));
}

/*
 * Recursive routine to add picl nodes to the frutree. Called from
 * add_all_nodes() for the whole frutree at initialisation, and from
 * frudr_evhandler() for portions of the frutree on DR insert events
 */
static int
add_subtree(picl_nodehdl_t parh, fru_hdl_t handle)
{
        int     err, i;
        int     num_children;
        sgfrunode_t     *cp, *fruchildren = NULL;
        picl_nodehdl_t childh;

        /* find children of the parent node */
        fruchildren = get_node_children(handle, &num_children);
        if (fruchildren == NULL)
                return (PICL_FAILURE);

        /* for each child, add a new picl node */
        for (i = 0, cp = fruchildren; i < num_children; i++, cp++) {
                /*
                 * Add the appropriate PICL class
                 */
                childh = 0;
                err = add_picl_node(parh, cp, &childh);
                if (err == PICL_NOTNODE)
                        continue;
                if (err != PICL_SUCCESS) {
                        free(fruchildren);
                        return (err);
                }

                /*
                 * Recursively call this function based on has_children hint
                 */
                if (childh && cp->has_children) {
                        err = add_subtree(childh, cp->handle);
                        if (err != PICL_SUCCESS) {
                                free(fruchildren);
                                return (err);
                        }
                }
        }
        free(fruchildren);
        return (PICL_SUCCESS);
}

/*
 * Recursive routine to remove picl nodes to the frutree. Called from
 * piclfrutree_fini() for the whole frutree at termination, and from
 * frudr_completion_handler() for portions of the frutree on DR remove events
 */
static int
remove_subtree(picl_nodehdl_t parh)
{
        picl_nodehdl_t chdh;

        for (;;) {
                if (ptree_get_propval_by_name(parh, PICL_PROP_CHILD, &chdh,
                    sizeof (picl_nodehdl_t)) == PICL_SUCCESS) {
                        if (remove_subtree(chdh) != PICL_SUCCESS)
                                return (PICL_FAILURE);
                } else {
                        return (remove_picl_node(parh));
                }
        }
        /* NOTREACHED */
}

/*
 * Add fru and location nodes with SC_handle property
 * (aka, container handle, for frus).
 * Return picl_nodehdl of created node in *childp.
 */
static int
add_picl_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp)
{
        switch (sgfrunode->class) {
        case PSEUDO_FRU_CLASS:
                return (add_chassis_node(parh, sgfrunode, childp));

        case FRU_CLASS:
                return (add_fru_node(parh, sgfrunode, childp));

        case LOCATION_CLASS:
                return (add_location_node(parh, sgfrunode, childp));

        default:
                syslog(LOG_ERR, INVALID_PICL_CLASS, sgfrunode->class);
                return (PICL_NOTNODE);
        }
}

/*
 * create chassis node
 */
static int
add_chassis_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp)
{
        int err;
        uint64_t handle = (uint64_t)sgfrunode->handle;
        picl_prophdl_t  tblhdl;
        picl_nodehdl_t nodeh;
        picl_nodehdl_t devhdl;
        picl_nodehdl_t childh;

        err = ptree_create_and_add_node(parh, PICL_PROPVAL_CHASSIS,
            PICL_CLASS_FRU, &childh);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODE_FAIL, PICL_PROPVAL_CHASSIS, err);
                return (err);
        }
        err = add_prop_ull(childh, handle, PICL_PROP_SC_HANDLE);
        if (err != PICL_SUCCESS)
                return (err);

        /*
         * add devices table to chassis node (may need references
         * to led devices)
         */
        err = create_table(childh, &tblhdl, PICL_PROP_DEVICES);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_led_nodes(childh, "chassis", LOM_LED_POSITION_FRU, tblhdl);
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io)
                err = ptree_get_node_by_path(DISK0_DEV_PCIX, &devhdl);
        else
                err = ptree_get_node_by_path(DISK0_DEV, &devhdl);

        nodeh = childh;
        if (err != PICL_SUCCESS) {
                err = add_intermediate_location(&nodeh, "DISK0", "disk-slot");
        } else {
                err = add_intermediate_nodes(&nodeh, "DISK0", &tblhdl,
                    "disk-slot", NULL);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_prop_ref(devhdl, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_table_entry(tblhdl, devhdl, PICL_CLASS_BLOCK);
        }
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io)
                err = ptree_get_node_by_path(DISK1_DEV_PCIX, &devhdl);
        else
                err = ptree_get_node_by_path(DISK1_DEV, &devhdl);

        nodeh = childh;
        if (err != PICL_SUCCESS) {
                err = add_intermediate_location(&nodeh, "DISK1", "disk-slot");
        } else {
                err = add_intermediate_nodes(&nodeh, "DISK1", &tblhdl,
                    "disk-slot", NULL);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_prop_ref(devhdl, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_table_entry(tblhdl, devhdl, PICL_CLASS_BLOCK);
        }
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io)
                err = ptree_get_node_by_path(TAPE_DEV_PCIX, &devhdl);
        else
                err = ptree_get_node_by_path(TAPE_DEV, &devhdl);

        nodeh = childh;
        if (err != PICL_SUCCESS) {
                err = add_intermediate_location(&nodeh, "TAPE", "tape-slot");
        } else {
                err = add_intermediate_nodes(&nodeh, "TAPE", &tblhdl,
                    "tape-slot", NULL);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_prop_ref(devhdl, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_table_entry(tblhdl, devhdl, PICL_CLASS_TAPE);
        }
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io)
                err = ptree_get_node_by_path(DVD_DEV_PCIX, &devhdl);
        else
                err = ptree_get_node_by_path(DVD_DEV, &devhdl);

        nodeh = childh;
        if (err != PICL_SUCCESS) {
                err = add_intermediate_location(&nodeh, "DVD", "dvd-slot");
        } else {
                err = add_intermediate_nodes(&nodeh, "DVD", &tblhdl,
                    "dvd-slot", NULL);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_prop_ref(devhdl, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_table_entry(tblhdl, devhdl, PICL_CLASS_CDROM);
        }
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io) {
                /*
                 * The XMITS/PCI-X IO Assembly is layed out a bit differently.
                 */
                err = add_pci_location(childh, "19,600000", '1', "PCI0");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,600000", '2', "PCI1");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,700000", '1', "PCI2");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,700000", '2', "PCI3");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "18,600000", '1', "PCI4");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "18,600000", '2', "PCI5");
                if (err != PICL_SUCCESS)
                        return (err);
        } else {
                err = add_pci_location(childh, "18,700000", '1', "PCI0");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "18,700000", '2', "PCI1");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,700000", '1', "PCI2");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,700000", '2', "PCI3");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "19,700000", '3', "PCI4");
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_pci_location(childh, "18,600000", '1', "PCI5");
                if (err != PICL_SUCCESS)
                        return (err);
        }
        *childp = childh;
        return (PICL_SUCCESS);
}

/*
 * create fru node, based on sgfru node "sgfrunode" under parent parh. Return
 * picl_nodehdl of created node in *childp.
 */
static int
add_fru_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp)
{
        int err;
        picl_prophdl_t  tblhdl;
        picl_nodehdl_t childh;
        uint64_t handle = (uint64_t)sgfrunode->handle;
        char *nodename = sgfrunode->nodename;

        /*
         * if sgfrunode already there, then just carry on own the tree
         */
        childh = find_child_by_name(parh, nodename);
        if (childh != NULL) {
                /*
                 * for frus other than dimms and ecaches, update environmental
                 * sensors and board status if necessary
                 */
                if (IS_ECACHE_NODE(nodename)) {
                        *childp = childh;
                        return (PICL_SUCCESS);
                }
                if (IS_DIMM_NODE(nodename)) {
                        /*
                         * for dimms we just want status
                         */
                        err = add_board_status(childh, nodename);
                        if (err != PICL_SUCCESS)
                                return (err);
                        *childp = childh;
                        return (PICL_SUCCESS);
                }
                err = add_board_status(childh, nodename);
                if (err != PICL_SUCCESS)
                        return (err);
                err = ptree_get_propval_by_name(childh, PICL_PROP_DEVICES,
                    &tblhdl, sizeof (tblhdl));
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_env_nodes(childh, nodename, tblhdl);
                if (err != PICL_SUCCESS)
                        return (err);
                *childp = childh;
                return (PICL_SUCCESS);
        }

        /*
         * create requested fru node
         */
        err = ptree_create_and_add_node(parh, nodename, PICL_CLASS_FRU,
            &childh);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODE_FAIL, nodename, err);
                return (err);
        }

        /*
         * if sgfru has sent us a valid handle, then there is fruid information.
         * create the SC_handle, and FRUDateAvailable properties for FRUID.
         */
        if (handle != -1ULL) {
                err = add_prop_ull(childh, handle, PICL_PROP_SC_HANDLE);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_prop_void(childh, PICL_PROP_FRUDATA_AVAIL);
                if (err != PICL_SUCCESS)
                        return (err);
        }

        /*
         * post fru added event to fru data plugin if this was due to
         * a dr event - ie post-initialisation
         */
        if (init_complete)
                post_frudr_event(PICL_FRU_ADDED, parh, NULL);

        /*
         * Create empty Devices table - we'll add lines to it as we go along
         */
        err = create_table(childh, &tblhdl, PICL_PROP_DEVICES);
        if (err != PICL_SUCCESS)
                return (err);

        /*
         * Ecache nodes don't have sensors - just set up FRUType
         */
        if (IS_ECACHE_NODE(nodename)) {
                err = add_prop_charstring(childh, "EEPROM", PICL_PROP_FRU_TYPE);
                if (err != PICL_SUCCESS)
                        return (err);
                *childp = childh;
                return (PICL_SUCCESS);
        }

        /*
         * Dimm nodes don't have sensors - just set up FRUType and
         * also reference properties to memory module nodes and OpStatus
         */
        if (IS_DIMM_NODE(nodename)) {
                err = add_prop_charstring(childh, "DIMM", PICL_PROP_FRU_TYPE);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_dimm_references(parh, nodename[1] - '0',
                    childh, tblhdl);
                if (err != PICL_SUCCESS)
                        return (err);
                err = add_board_status(childh, nodename);
                if (err != PICL_SUCCESS)
                        return (err);
                *childp = childh;
                return (PICL_SUCCESS);
        }

        /*
         * not a Dimm or Ecache node - set up environmental info,
         * board status and led info
         */
        err = add_env_nodes(childh, nodename, tblhdl);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_board_status(childh, nodename);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_led_nodes(childh, nodename, LOM_LED_POSITION_FRU, tblhdl);
        if (err != PICL_SUCCESS)
                return (err);

        *childp = childh;
        return (PICL_SUCCESS);
}

/*
 * create location node, based on sgfru node "sgfrunode" under parent parh.
 * Return picl_nodehdl of created node in *childp.
 */
static int
add_location_node(picl_nodehdl_t parh, sgfrunode_t *sgfrunode,
    picl_nodehdl_t *childp)
{
        int err;
        uint64_t handle = (uint64_t)sgfrunode->handle;
        char *labelp;
        char    label[MAX_LABEL_LEN];
        char *ptr;
        picl_prophdl_t tblhdl;
        picl_nodehdl_t childh;

        /*
         * strip "N0/" off the label if present (hang-over from wildcat)
         */
        if (strncmp(sgfrunode->location_label, LABEL_PREAMBLE,
            LABEL_PREAMBLE_LEN) == 0)
                (void) strlcpy(label, &sgfrunode->location_label[
                    LABEL_PREAMBLE_LEN], sizeof (label));
        else
                (void) strlcpy(label, &sgfrunode->location_label[0],
                    sizeof (label));

        /*
         * some of the locations returned by sgfru are actually of the form
         * XX/YY/ZZ - we need to create multiple levels in the picl tree for
         * these.
         */
        labelp = label;
        while ((ptr = strchr(labelp, '/')) != NULL) {
                /*
                 * null end of this section of label
                 */
                *ptr = '\0';

                /*
                 * add intermediate nodes - parh will point to the created node
                 */
                if (IS_PROC_NODE(labelp)) {
                        err = add_intermediate_nodes(&parh, labelp, &tblhdl,
                            "cpu", "PROC");
                } else {
                        err = add_intermediate_nodes(&parh, labelp, &tblhdl,
                            NULL, NULL);
                }
                if (err != PICL_SUCCESS)
                        return (err);
                /*
                 * if processor node, then create links to associated cpu node
                 * and OpStatus property
                 */
                if (IS_PROC_NODE(labelp)) {
                        err = create_cpu_references(labelp, parh, tblhdl);
                        if (err != PICL_SUCCESS)
                                return (err);
                        err = add_board_status(parh, labelp);
                        if (err != PICL_SUCCESS)
                                return (err);
                }
                labelp = ptr + 1;

                /*
                 * set back to "/"
                 */
                *ptr = '/';
        }

        /*
         * if node already there, then just carry on down the tree
         */
        childh = find_child_by_name(parh, labelp);
        if (childh != NULL) {
                *childp = childh;
                return (PICL_SUCCESS);
        }

        /*
         * now just have the final level of the node left. First create it.
         */
        err = ptree_create_and_add_node(parh, labelp, PICL_CLASS_LOCATION,
            &childh);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODE_FAIL, labelp, err);
                return (err);
        }

        /*
         * if sgfru has sent us a valid handle, then there is fruid information.
         * create the SC_handle property for FRUID.
         */
        if (handle != -1ULL) {
                err = add_prop_ull(childh, handle, PICL_PROP_SC_HANDLE);
                if (err != PICL_SUCCESS)
                        return (err);
        }

        /* create label property for location class */
        err = add_prop_charstring(childh, labelp, PICL_PROP_LABEL);
        if (err != PICL_SUCCESS)
                return (err);

        /* create SlotType property where appropriate */
        if (IS_ECACHE_NODE(sgfrunode->nodename)) {
                err = add_prop_charstring(childh,
                    "ecache", PICL_PROP_SLOT_TYPE);
                /*
                 * For Ecache, don't need to add environmental info
                 * so return here
                 */
                *childp = childh;
                return (err);
        } else if (IS_DIMM_NODE(sgfrunode->nodename)) {
                err = add_prop_charstring(childh, "memory-module",
                    PICL_PROP_SLOT_TYPE);
                /*
                 * For Dimm, don't need to add environmental info
                 * so return here
                 */
                *childp = childh;
                return (err);
        } else if (IS_SB_NODE(sgfrunode->nodename)) {
                err = add_prop_charstring(childh, "system-board",
                    PICL_PROP_SLOT_TYPE);
        } else if (IS_PSU_NODE(sgfrunode->nodename)) {
                err = add_prop_charstring(childh, "power-supply",
                    PICL_PROP_SLOT_TYPE);
        } else if (IS_FT_NODE(sgfrunode->nodename)) {
                err = add_prop_charstring(childh, "fan-tray",
                    PICL_PROP_SLOT_TYPE);
        }
        if (err != PICL_SUCCESS)
                return (err);

        /*
         * add devices table to location node (may need
         * references to led devices)
         */
        err = create_table(childh, &tblhdl, PICL_PROP_DEVICES);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_led_nodes(childh, labelp, LOM_LED_POSITION_LOCATION, tblhdl);
        if (err != PICL_SUCCESS)
                return (err);
        *childp = childh;
        return (PICL_SUCCESS);
}

/*
 * remove an individual picl node - called from remove_subtree()
 * also removes any sensor nodes pointed at by Devices table
 */
static int
remove_picl_node(picl_nodehdl_t nodeh)
{
        int err;
        picl_prophdl_t  tblhdl;
        picl_prophdl_t  nextprop;
        picl_prophdl_t  refprop;
        char    class[PICL_CLASSNAMELEN_MAX];

        /*
         * first scan Devices table so we can find any sensor nodes
         * we need to delete as well
         */
        err = ptree_get_propval_by_name(nodeh, PICL_PROP_DEVICES,
            &tblhdl, sizeof (tblhdl));

        /*
         * If Devices table present, then read first column.
         * Devices table may be empty so don't treat this as an error
         */
        if (err == PICL_SUCCESS &&
            ptree_get_next_by_row(tblhdl, &nextprop) == PICL_SUCCESS) {
                /* find second column */
                err = ptree_get_next_by_row(nextprop, &nextprop);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, GET_NEXT_BY_ROW_FAIL,
                            PICL_PROP_DEVICES, err);
                        return (err);
                }

                /*
                 * walk down second column (ref ptr)
                 * deleting the referenced nodes
                 */
                while (err == PICL_SUCCESS) {
                        err = ptree_get_propval(nextprop, &refprop,
                            sizeof (refprop));
                        if (err != PICL_SUCCESS) {
                                syslog(LOG_ERR, GET_PROPVAL_FAIL, err);
                                return (err);
                        }

                        /*
                         * don't delete memory-module nodes
                         * or cpu nodes (they weren't created
                         * by this plugin)
                         */
                        err = ptree_get_propval_by_name(refprop,
                            PICL_PROP_CLASSNAME, class, sizeof (class));
                        if (err == PICL_STALEHANDLE) {
                                /*
                                 * if another plugin has already deleted the
                                 * node for us then that is ok
                                 */
                                err = ptree_get_next_by_col(nextprop,
                                    &nextprop);
                                continue;
                        }
                        if (err != PICL_SUCCESS) {
                                syslog(LOG_ERR, PROP_LOOKUP_FAIL,
                                    PICL_PROP_CLASSNAME, err);
                                return (err);
                        }
                        if (strcmp(class, PICL_CLASS_MEMORY_MODULE) == 0 ||
                            strcmp(class, PICL_CLASS_CPU) == 0) {
                                /*
                                 * but - do need to remove _fru_parent
                                 * property and Environment table (for cpu)
                                 */
                                err = remove_references(refprop, class);
                                if (err != PICL_SUCCESS)
                                        return (err);
                        } else {
                                /*
                                 * sensor node - need to delete it
                                 */
                                err = ptree_delete_node(refprop);
                                if (err != PICL_SUCCESS) {
                                        syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                                        return (err);
                                }
                                (void) ptree_destroy_node(refprop);
                        }
                        err = ptree_get_next_by_col(nextprop, &nextprop);
                }
        }

        /*
         * now we can remove the frutree node
         */
        err = ptree_delete_node(nodeh);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                return (err);
        }
        (void) ptree_destroy_node(nodeh);
        return (PICL_SUCCESS);
}

static int
add_child_pci_references(picl_nodehdl_t nodeh, picl_prophdl_t tblhdl,
    picl_nodehdl_t devnodeh)
{
        int err = PICL_SUCCESS;
        picl_nodehdl_t childnodeh;
        char    class[PICL_CLASSNAMELEN_MAX];

        if (ptree_get_propval_by_name(devnodeh, PICL_PROP_CHILD, &childnodeh,
            sizeof (childnodeh)) != PICL_SUCCESS) {
                return (PICL_SUCCESS);
        }
        for (;;) {
                err = ptree_get_propval_by_name(childnodeh,
                    PICL_PROP_CLASSNAME, class, sizeof (class));
                if (err != PICL_SUCCESS)
                        break;
                err = add_prop_ref(childnodeh, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        break;
                err = create_table_entry(tblhdl, childnodeh, class);
                if (err != PICL_SUCCESS)
                        break;
                err = add_child_pci_references(nodeh, tblhdl, childnodeh);
                if (err != PICL_SUCCESS)
                        break;
                err = ptree_get_propval_by_name(childnodeh,
                    PICL_PROP_PEER, &childnodeh, sizeof (picl_nodehdl_t));
                if (err != PICL_SUCCESS) {
                        err = PICL_SUCCESS;
                        break;
                }
        }
        return (err);
}

static int
add_pci_location(picl_nodehdl_t childh, char *parent_addr, char bus_addr,
    char *slot_name)
{
        int err;
        int got_one = 0;
        picl_nodehdl_t nodeh;
        picl_nodehdl_t devnodeh;
        picl_nodehdl_t devhdl;
        char    addr[MAXPATHLEN];
        char parent_path[MAXPATHLEN];
        picl_prophdl_t tblhdl;
        char    class[PICL_CLASSNAMELEN_MAX];

        /*
         * search for any device nodes whose BUS_ADDR or UNIT_ADDRESS
         * are appropriate for this pci slot
         */
        sprintf_buf2(parent_path, IO_DEV, parent_addr);
        if (ptree_get_node_by_path(parent_path, &devhdl) == PICL_SUCCESS &&
            ptree_get_propval_by_name(devhdl, PICL_PROP_CHILD, &devnodeh,
            sizeof (devnodeh)) == PICL_SUCCESS) {
                while (!got_one) {
                        err = ptree_get_propval_by_name(devnodeh,
                            PICL_PROP_BUS_ADDR, addr, sizeof (addr));
                        if (err == PICL_SUCCESS && addr[0] == bus_addr &&
                            (addr[1] == ',' || addr[1] == '\0')) {
                                got_one = 1;
                                break;
                        }
                        err = ptree_get_propval_by_name(devnodeh,
                            PICL_PROP_UNIT_ADDRESS, addr, sizeof (addr));
                        if (err == PICL_SUCCESS && addr[0] == bus_addr &&
                            (addr[1] == ',' || addr[1] == '\0')) {
                                got_one = 1;
                                break;
                        }
                        err = ptree_get_propval_by_name(devnodeh,
                            PICL_PROP_PEER, &devnodeh, sizeof (picl_nodehdl_t));
                        if (err != PICL_SUCCESS)
                                break;
                }
        }
        nodeh = childh;
        if (got_one == 0) {
                /*
                 * no devnodes for this slot. Create location node but
                 * no fru node (empty slot)
                 */
                return (add_intermediate_location(&nodeh, slot_name, "pci"));
        }

        /*
         * we've got the first devnode for this slot. Create the fru node
         * then walk along other nodes looking for further devnodes
         */
        err = add_intermediate_nodes(&nodeh, slot_name, &tblhdl, "pci", NULL);
        if (err != PICL_SUCCESS)
                return (err);

        for (;;) {
                if (((err = ptree_get_propval_by_name(devnodeh,
                    PICL_PROP_BUS_ADDR, addr, sizeof (addr))) ==
                    PICL_SUCCESS && addr[0] == bus_addr &&
                    (addr[1] == ',' || addr[1] == '\0')) ||
                    ((err = ptree_get_propval_by_name(devnodeh,
                    PICL_PROP_UNIT_ADDRESS, addr, sizeof (addr))) ==
                    PICL_SUCCESS && addr[0] == bus_addr &&
                    (addr[1] == ',' || addr[1] == '\0'))) {
                        err = ptree_get_propval_by_name(devnodeh,
                            PICL_PROP_CLASSNAME, class, sizeof (class));
                        if (err != PICL_SUCCESS)
                                break;
                        err = add_prop_ref(devnodeh, nodeh,
                            PICL_REFPROP_FRU_PARENT);
                        if (err != PICL_SUCCESS)
                                break;
                        err = create_table_entry(tblhdl, devnodeh, class);
                        if (err != PICL_SUCCESS)
                                break;
                        err = add_child_pci_references(nodeh, tblhdl, devnodeh);
                        if (err != PICL_SUCCESS)
                                break;
                }
                err = ptree_get_propval_by_name(devnodeh,
                    PICL_PROP_PEER, &devnodeh, sizeof (picl_nodehdl_t));
                if (err != PICL_SUCCESS) {
                        err = PICL_SUCCESS;
                        break;
                }
        }
        return (err);
}

/*
 * add intermediate location into frutree (ie a location that we know
 * exists but sgfru doesn't)
 */
static int
add_intermediate_location(picl_nodehdl_t *nodep, char *labelp, char *slot_name)
{
        int err;
        picl_nodehdl_t intermediate;
        picl_prophdl_t tblhdl;
        char    parent_name[PICL_PROPNAMELEN_MAX];

        err = ptree_create_and_add_node(*nodep, labelp, PICL_CLASS_LOCATION,
            &intermediate);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODE_FAIL, labelp, err);
                return (err);
        }

        /*
         * create label property for location class
         */
        err = add_prop_charstring(intermediate, labelp, PICL_PROP_LABEL);
        if (err != PICL_SUCCESS)
                return (err);

        /*
         * add devices table to location node (may need references to led
         * devices)
         */
        err = create_table(intermediate, &tblhdl, PICL_PROP_DEVICES);
        if (err != PICL_SUCCESS)
                return (err);

        /*
         * scapp knows FANs 0 and 1 on IB as FAN8 and FAN9
         */
        err = ptree_get_propval_by_name(*nodep, PICL_PROP_NAME, parent_name,
            sizeof (parent_name));
        if (err != PICL_SUCCESS)
                return (err);
        if (strcmp(labelp, "FAN0") == 0 && strcmp(parent_name, "IB6") == 0)
                err = add_led_nodes(intermediate, "FAN8",
                    LOM_LED_POSITION_LOCATION, tblhdl);
        else if (strcmp(labelp, "FAN1") == 0 && strcmp(parent_name, "IB6") == 0)
                err = add_led_nodes(intermediate, "FAN9",
                    LOM_LED_POSITION_LOCATION, tblhdl);
        else
                err = add_led_nodes(intermediate, labelp,
                    LOM_LED_POSITION_LOCATION, tblhdl);
        if (err != PICL_SUCCESS)
                return (err);

        if (slot_name) {
                err = add_prop_charstring(intermediate, slot_name,
                    PICL_PROP_SLOT_TYPE);
                if (err != PICL_SUCCESS)
                        return (err);
        }
        *nodep = intermediate;
        return (PICL_SUCCESS);
}

/*
 * adds an intermediate location/fru pair into frutree
 */
static int
add_intermediate_nodes(picl_nodehdl_t *nodep, char *labelp,
    picl_prophdl_t *tblhdlp, char *slot_name, char *fru_name)
{
        int err;
        picl_nodehdl_t intermediate;
        picl_nodehdl_t intermediate2;

        /*
         * create intermediate location node (unless it has already been
         * created)
         */
        intermediate = find_child_by_name(*nodep, labelp);
        if (intermediate == NULL) {
                intermediate = *nodep;
                err = add_intermediate_location(&intermediate, labelp,
                    slot_name);
                if (err != PICL_SUCCESS) {
                        return (err);
                }
        }

        /*
         * create intermediate fru node (unless it has already been
         * created)
         */
        intermediate2 = find_child_by_name(intermediate, labelp);
        if (intermediate2 == NULL) {
                /*
                 * need to create intermediate fru node node
                 */
                err = ptree_create_and_add_node(intermediate, labelp,
                    PICL_CLASS_FRU, &intermediate2);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, ADD_NODE_FAIL, labelp, err);
                        return (err);
                }

                /*
                 * Create empty Devices table
                 */
                err = create_table(intermediate2, tblhdlp, PICL_PROP_DEVICES);
                if (err != PICL_SUCCESS)
                        return (err);

                if (fru_name) {
                        err = add_prop_charstring(intermediate2, fru_name,
                            PICL_PROP_FRU_TYPE);
                        if (err != PICL_SUCCESS)
                                return (err);
                }
        } else  {
                err = ptree_get_propval_by_name(intermediate2,
                    PICL_PROP_DEVICES, tblhdlp, sizeof (*tblhdlp));
                if (err != PICL_SUCCESS)
                        return (err);
        }
        *nodep = intermediate2;
        return (PICL_SUCCESS);
}

/*
 * need to remove _fru_parent property and Environment table (for cpu)
 */
static int
remove_references(picl_prophdl_t refprop, char *class)
{
        picl_prophdl_t  platprop;
        int err;

        err = ptree_get_prop_by_name(refprop, PICL_REFPROP_FRU_PARENT,
            &platprop);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_delete_prop(platprop);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                return (err);
        }
        (void) ptree_destroy_prop(platprop);
        if (strcmp(class, PICL_CLASS_CPU) == 0) {
                err = ptree_get_prop_by_name(refprop, PICL_PROP_ENV, &platprop);
                if (err != PICL_SUCCESS) {
                        /*
                         * multi-core cpu is setup with only one cpu having
                         * env table so ignore PICL_PROPNOTFOUND error.
                         */
                        if (err == PICL_PROPNOTFOUND) {
                                return (PICL_SUCCESS);
                        }
                        syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_ENV, err);
                        return (err);
                }
                err = ptree_delete_prop(platprop);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, DELETE_PROP_FAIL, err);
                        return (err);
                }
                (void) ptree_destroy_prop(platprop);
        }
        return (PICL_SUCCESS);
}

/*
 * 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);
        }
}

static int
create_dimm_references(picl_nodehdl_t parh, int dimm_id,
    picl_nodehdl_t nodeh, picl_prophdl_t tblhdl)
{
        int err;
        picl_nodehdl_t memctlhdl = NULL;
        picl_nodehdl_t memgrphdl;
        picl_nodehdl_t memhdl;
        char name[MAXPATHLEN];
        char    sbname[PICL_PROPNAMELEN_MAX];
        char    pname[PICL_PROPNAMELEN_MAX];
        char    bname[PICL_PROPNAMELEN_MAX];
        picl_nodehdl_t parentfruh;
        picl_nodehdl_t parentloch;
        int id;

        /*
         * create reference properties for memory nodes
         * - first find names of ancestor frus - ie "SBx/Py/Bz"
         */
        err = ptree_get_propval_by_name(parh, PICL_PROP_PARENT, &parentfruh,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_NAME,
            bname, sizeof (bname));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_PARENT,
            &parentloch, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentloch, PICL_PROP_PARENT,
            &parentfruh, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_NAME,
            pname, sizeof (pname));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }

        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_PARENT,
            &parentloch, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentloch, PICL_PROP_PARENT,
            &parentfruh, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_NAME, sbname,
            sizeof (sbname));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }

        /*
         * ok - we've now got name of system board node in sbname and
         * name of processor node in pname.
         * Now find corresponding memory-controller node if present
         */
        sprintf_buf2(name, MEMORY_DEV, SB_P_TO_SAFARI_ADDR(sbname, pname));
        err = ptree_get_node_by_path(name, &memctlhdl);
        if (err != PICL_SUCCESS)
                return (PICL_SUCCESS);

        /*
         * now find corresponding memory-module-group node if present
         */
        err = ptree_get_propval_by_name(memctlhdl, PICL_PROP_CHILD, &memgrphdl,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS)
                return (PICL_SUCCESS);

        /*
         * check if this is the right bank - if not move on to sibling
         */
        err = ptree_get_propval_by_name(memgrphdl, PICL_PROP_ID,
            &id, sizeof (int));
        if (err != PICL_SUCCESS)
                return (PICL_SUCCESS);
        if (bname[1] != id + '0') {
                err = ptree_get_propval_by_name(memgrphdl, PICL_PROP_PEER,
                    &memgrphdl, sizeof (picl_nodehdl_t));
                if (err != PICL_SUCCESS)
                        return (PICL_SUCCESS);
                err = ptree_get_propval_by_name(memgrphdl, PICL_PROP_ID,
                    &id, sizeof (int));
                if (err != PICL_SUCCESS)
                        return (PICL_SUCCESS);
                if (bname[1] != id + '0')
                        return (PICL_SUCCESS);
        }

        /*
         * now find corresponding memory-module node if present
         */
        err = ptree_get_propval_by_name(memgrphdl, PICL_PROP_CHILD, &memhdl,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS)
                return (PICL_SUCCESS);

        /*
         * for each DIMM set up links with matching memory-module node
         */
        for (;;) {
                err = ptree_get_propval_by_name(memhdl, PICL_PROP_ID,
                    &id, sizeof (int));
                if (err == PICL_SUCCESS && dimm_id == id) {
                        err = add_prop_ref(memhdl, nodeh,
                            PICL_REFPROP_FRU_PARENT);
                        if (err != PICL_SUCCESS)
                                return (err);
                        err = create_table_entry(tblhdl, memhdl,
                            PICL_CLASS_MEMORY_MODULE);
                        if (err != PICL_SUCCESS)
                                return (err);
                }
                err = ptree_get_propval_by_name(memhdl, PICL_PROP_PEER,
                    &memhdl, sizeof (picl_nodehdl_t));
                if (err != PICL_SUCCESS)
                        break;
        }
        return (PICL_SUCCESS);
}

static int
create_cpu_references(char *pname, picl_nodehdl_t nodeh, picl_prophdl_t tblhdl)
{
        int err;
        picl_nodehdl_t sensorhdl;
        picl_nodehdl_t parentloch;
        picl_nodehdl_t parentfruh;
        picl_nodehdl_t cpuhdl;
        picl_nodehdl_t cpuhdl1;
        picl_prophdl_t envtblhdl;
        picl_prophdl_t prophdl;
        char name[MAXPATHLEN];
        char    sbname[PICL_PROPNAMELEN_MAX];

        err = ptree_get_propval_by_name(nodeh, PICL_PROP_PARENT,
            &parentloch, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentloch, PICL_PROP_PARENT,
            &parentfruh, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_NAME, sbname,
            sizeof (sbname));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }

        /*
         * Find corresponding cpu node if present. Note, this code will
         * attempt to find a corresponding cpu node, by searching for devices
         * of the types  /platform/ssm@0,0/SUNW,UltraSPARC-III+@%x,0,
         * /platform/ssm@0,0/SUNW,UltraSPARC-III@%x,0 or
         * /platform/ssm@0,0/cmp@%x,0/cpu@0 or 1. If we can not find
         * any such device, we return PICL_SUCCESS such that we
         * continue the construction of the remaining part of the
         * tree. We first check for UltraSPARC-III. If we do not
         * find such a device we check for UltraSPARC-III+. If
         * we are unsuccesful again we try one of the jaguar cores
         * /platform/ssm@0,0/cmp@%x,0/cpu@. If we do not find the
         * first one, there's no point in continuing and we just
         * return PICL_SUCCESS. Similarly if we find one core
         * but not the other, something must be wrong, so we
         * again just return PICL_SUCCESS without creating any
         * references.
         */
        sprintf_buf2(name, CPU_DEV, SB_P_TO_SAFARI_ADDR(sbname, pname));

        err = ptree_get_node_by_path(name, &cpuhdl);

        if (err != PICL_SUCCESS) {
                sprintf_buf2(name, CPU_DEV2,
                    SB_P_TO_SAFARI_ADDR(sbname, pname));
                err = ptree_get_node_by_path(name, &cpuhdl);
                if (err != PICL_SUCCESS) {
                        /* check for jaguar cores */
                        sprintf_buf2(name, CPU_DEV3C1,
                            SB_P_TO_SAFARI_ADDR(sbname, pname));
                        err = ptree_get_node_by_path(name, &cpuhdl1);
                        if (err != PICL_SUCCESS)
                                return (PICL_SUCCESS);
                        /* add fru parent reference for the second core */
                        err = ptree_get_prop_by_name(cpuhdl1,
                            PICL_REFPROP_FRU_PARENT, &prophdl);
                        if (err != PICL_SUCCESS) {
                            err = add_prop_ref(cpuhdl1, nodeh,
                                PICL_REFPROP_FRU_PARENT);
                        if (err != PICL_SUCCESS)
                                return (err);
                        err = create_table_entry(tblhdl, cpuhdl1,
                            PICL_CLASS_CPU);
                        if (err != PICL_SUCCESS)
                                return (err);
                        }
                        sprintf_buf2(name, CPU_DEV3C0,
                            SB_P_TO_SAFARI_ADDR(sbname, pname));
                        err = ptree_get_node_by_path(name, &cpuhdl);
                        if (err != PICL_SUCCESS)
                                return (PICL_SUCCESS);

                }
        }

        /*
         * now create reference properties
         */
        err = ptree_get_prop_by_name(cpuhdl, PICL_REFPROP_FRU_PARENT, &prophdl);
        if (err != PICL_SUCCESS) {
                err = add_prop_ref(cpuhdl, nodeh, PICL_REFPROP_FRU_PARENT);
                if (err != PICL_SUCCESS)
                        return (err);
                err = create_table_entry(tblhdl, cpuhdl, PICL_CLASS_CPU);
                if (err != PICL_SUCCESS)
                        return (err);
        }

        /*
         * create Environment table on cpu node - with Die and Ambient
         * temperature sensors if present. If already there, delete and start
         * again
         */
        err = ptree_get_prop_by_name(cpuhdl, PICL_PROP_ENV, &prophdl);
        if (err == PICL_SUCCESS) {
                err = ptree_delete_prop(prophdl);
                if (err != PICL_SUCCESS)
                        return (err);
                (void) ptree_destroy_prop(prophdl);
        }
        err = create_table(cpuhdl, &envtblhdl, PICL_PROP_ENV);
        if (err != PICL_SUCCESS)
                return (err);

        if (pcix_io)
                sprintf_buf4(name, "%s/%s_t_cheetah%d@0", SC_DEV_PCIX, sbname,
                    (pname[1] - '0'));
        else
                sprintf_buf4(name, "%s/%s_t_cheetah%d@0", SC_DEV, sbname,
                    (pname[1] - '0'));

        err = ptree_get_node_by_path(name, &sensorhdl);
        if (err == PICL_SUCCESS) {
                err = create_table_entry(envtblhdl, sensorhdl,
                    PICL_CLASS_TEMPERATURE_SENSOR);
                if (err != PICL_SUCCESS)
                        return (err);
        }

        if (pcix_io)
                sprintf_buf4(name, "%s/%s_t_ambient%d@0", SC_DEV_PCIX, sbname,
                    (pname[1] - '0'));
        else
                sprintf_buf4(name, "%s/%s_t_ambient%d@0", SC_DEV, sbname,
                    (pname[1] - '0'));

        err = ptree_get_node_by_path(name, &sensorhdl);
        if (err == PICL_SUCCESS) {
                return (create_table_entry(envtblhdl, sensorhdl,
                    PICL_CLASS_TEMPERATURE_SENSOR));
        }
        return (PICL_SUCCESS);
}

/*
 * subroutine of add_subtree - get a list of children of a parent node
 */
static sgfrunode_t *
get_node_children(fru_hdl_t fruparent, int *num_childrenp)
{
        int     max_children, i;
        sgfrunode_t     *fruchildren = NULL;
        child_info_t child_info;
        int  frufd;

        /*
         * Open the sgfru pseudo dev
         */
        if ((frufd = open(FRU_PSEUDO_DEV, O_RDWR, 0)) == -1) {
                syslog(LOG_ERR, DEV_OPEN_FAIL, FRU_PSEUDO_DEV, strerror(errno));
                return (NULL);
        }
        for (i = 1; i <= MAX_TRIES; i++) {
                max_children = i * MAX_NODE_CHILDREN;
                if ((fruchildren = calloc(max_children,
                    sizeof (sgfrunode_t))) == NULL) {
                        (void) close(frufd);
                        syslog(LOG_ERR, MALLOC_FAIL);
                        return (NULL);
                }
                child_info.fru_hdl = fruparent;
                child_info.fru_cnt = max_children;
                child_info.frus = (void *)fruchildren;
                if (ioctl(frufd, SGFRU_GETCHILDLIST, &child_info) == 0) {
                        /*
                         * got them - return success
                         */
                        (void) close(frufd);
                        *num_childrenp = child_info.fru_cnt;
                        return (fruchildren);
                }
                free(fruchildren);

                /*
                 * if ENOMEM, need to calloc more space - so go round loop again
                 * otherwise fail
                 */
                if (errno != ENOMEM) {
                        (void) close(frufd);
                        syslog(LOG_ERR, SGFRU_IOCTL_FAIL, SGFRU_GETCHILDLIST,
                            fruparent, strerror(errno));
                        return (NULL);
                }
        }
        (void) close(frufd);
        syslog(LOG_ERR, MALLOC_FAIL);
        return (NULL);
}

/* Creates an unsigned longlong property for a given PICL node */
static int
add_prop_ull(picl_nodehdl_t nodeh, uint64_t handle, char *name)
{
        picl_prophdl_t proph;
        ptree_propinfo_t propinfo;
        int err;

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_UNSIGNED_INT, PICL_READ, sizeof (unsigned long long),
            PICL_PROP_SC_HANDLE, NULL, NULL);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROPINFO_FAIL, name, err);
                return (err);
        }
        err = ptree_create_and_add_prop(nodeh, &propinfo, &handle, &proph);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_PROP_FAIL, name, err);
                return (err);
        }
        return (PICL_SUCCESS);
}

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

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_VOID, PICL_READ, 0, PICL_PROP_FRUDATA_AVAIL, NULL, NULL);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROPINFO_FAIL, name, err);
                return (err);
        }
        err = ptree_create_and_add_prop(nodeh, &propinfo, NULL, &proph);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_PROP_FAIL, name, err);
                return (err);
        }
        return (PICL_SUCCESS);
}

/* 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);
}

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

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_INT, PICL_READ, sizeof (int), 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);
}

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

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_FLOAT, PICL_READ, sizeof (float), 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);
}

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

        err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
            PICL_PTYPE_CHARSTRING, PICL_READ, strlen(value) + 1,
            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 refernce 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);
}

static void
frudr_add_subtree(picl_nodehdl_t parh)
{
        fru_hdl_t       sgfruhdl;
        if (ptree_get_propval_by_name(parh, PICL_PROP_SC_HANDLE,
            &sgfruhdl, sizeof (sgfruhdl)) != PICL_SUCCESS) {
                return;
        }
        (void) add_subtree(parh, sgfruhdl);
}

/* 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;

        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) remove_subtree(fruh);

                        /*
                         * Now repopulate the frutree with current data.
                         */
                        parh = NULL;
                        (void) nvlist_lookup_uint64(earg,
                            PICLEVENTARG_PARENTHANDLE, &parh);
                        if (parh != NULL) {
                                frudr_add_subtree(parh);
                        }
                }
        }
        nvlist_free(earg);
        free(earg);
        free(ename);
}

/*
 * 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);
        }
}

/*
 * updates the picl node 'loc' with the new fru handle (PICL_PROP_SC_HANDLE)
 * (helper function for frudr_evhandler, when a stale fru handle is
 * detected)
 */
static void
update_fru_hdl(picl_nodehdl_t loc, fru_hdl_t newsgfruhdl)
{
        picl_prophdl_t  schproph;
        int             err;

        err = ptree_get_prop_by_name(loc, PICL_PROP_SC_HANDLE, &schproph);
        if (err == PICL_SUCCESS) {
                if (ptree_delete_prop(schproph) == PICL_SUCCESS) {
                        (void) ptree_destroy_prop(schproph);
                }
        }
        (void) add_prop_ull(loc, (uint64_t)newsgfruhdl, PICL_PROP_SC_HANDLE);
}

/*
 * Get the fru handle of loc by iterating through the parent's children.
 * Sets fruhdl and returns PICL_SUCCESS unless an error is encountered.
 */
static int
get_fruhdl_from_parent(picl_nodehdl_t loc, fru_hdl_t *fruhdl)
{
        picl_nodehdl_t  parlocnodeh;
        fru_hdl_t       parsgfruhdl;
        sgfrunode_t     *cp;
        sgfrunode_t     *fruchildren;
        char            nodename[PICL_PROPNAMELEN_MAX];
        int             err;
        int             num_children;
        int             i;

        err = ptree_get_propval_by_name(loc, PICL_PROP_NAME, (void *)nodename,
            PICL_PROPNAMELEN_MAX);
        if (err != PICL_SUCCESS)
                return (err);
        err = ptree_get_propval_by_name(loc, PICL_PROP_PARENT, &parlocnodeh,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS)
                return (err);
        if ((err = ptree_get_propval_by_name(parlocnodeh, PICL_PROP_SC_HANDLE,
            &parsgfruhdl, sizeof (parsgfruhdl))) != PICL_SUCCESS)
                return (err);
        /* find children of the parent node */
        fruchildren = get_node_children(parsgfruhdl, &num_children);
        if (fruchildren == NULL)
                return (PICL_FAILURE);
        for (i = 0, cp = fruchildren; i < num_children; i++, cp++) {
                /* find the child we're interested in */
                if (strcmp(cp->nodename, nodename) == 0) {
                        *fruhdl = cp->handle;
                        free(fruchildren);
                        return (PICL_SUCCESS);
                }
        }
        free(fruchildren);
        return (PICL_FAILURE);
}

/*
 * 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;
        fru_hdl_t               sgfruhdl;
        fru_hdl_t               sgfruhdl_from_parent;

        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;
        }

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

        if (strncmp(ap_id, AP_ID_PREAMBLE, AP_ID_PREAMBLE_LEN) != 0) {
                nvlist_free(nvlp);
                return;
        }

        /*
         * OK - so this is an EC_DR event - let's handle it.
         */
        sprintf_buf2(path, CHASSIS_LOC_PATH, &ap_id[AP_ID_PREAMBLE_LEN]);

        /*
         * special case - SSC arrival means that SSC has been reset - we
         * need to flush the cached sgfru handles
         */
        if (strcmp(&ap_id[AP_ID_PREAMBLE_LEN], "SSC1") == 0) {
                picl_nodehdl_t chdh;
                picl_nodehdl_t peerh;
                picl_nodehdl_t parh;
                int got_peer;
                char    label[MAX_LABEL_LEN];
                int err;
                sgfrunode_t     *sgfruchassisp = NULL;
                int num_children;
                picl_prophdl_t  schproph;

                /* find existing chassis node */
                if (ptree_get_node_by_path(CHASSIS_PATH, &parh) !=
                    PICL_SUCCESS) {
                        nvlist_free(nvlp);
                        return;
                }

                /* find new chassis sgfru node */
                sgfruchassisp = get_node_children(ROOTPARENT, &num_children);
                if (sgfruchassisp == NULL || num_children != 1) {
                        nvlist_free(nvlp);
                        return;
                }

                /* update chassis SC_HANDLE property */
                err = ptree_get_prop_by_name(parh, PICL_PROP_SC_HANDLE,
                    &schproph);
                if (err != PICL_SUCCESS) {
                        nvlist_free(nvlp);
                        return;
                }
                err = ptree_delete_prop(schproph);
                if (err != PICL_SUCCESS) {
                        nvlist_free(nvlp);
                        return;
                }
                (void) ptree_destroy_prop(schproph);
                err = add_prop_ull(parh, sgfruchassisp->handle,
                    PICL_PROP_SC_HANDLE);
                if (err != PICL_SUCCESS) {
                        nvlist_free(nvlp);
                        return;
                }

                /*
                 * remove all subtrees except DISK, TAPE, DVD and PCI subtrees
                 */
                if (ptree_get_propval_by_name(parh, PICL_PROP_CHILD, &chdh,
                    sizeof (picl_nodehdl_t)) == PICL_SUCCESS) {
                        for (;;) {
                                if (ptree_get_propval_by_name(chdh,
                                    PICL_PROP_PEER, &peerh,
                                    sizeof (picl_nodehdl_t)) != PICL_SUCCESS)
                                        got_peer = 0;
                                else
                                        got_peer = 1;
                                err = ptree_get_propval_by_name(chdh,
                                    PICL_PROP_LABEL, label, sizeof (label));
                                if (err == PICL_SUCCESS) {
                                        if (strncmp(label, "DISK",
                                            strlen("DISK")) != 0 &&
                                            strncmp(label, "TAPE",
                                            strlen("TAPE")) != 0 &&
                                            strncmp(label, "PCI",
                                            strlen("PCI")) != 0 &&
                                            strncmp(label, "DVD",
                                            strlen("DVD")) != 0) {
                                                (void) remove_subtree(chdh);
                                        }
                                }
                                if (got_peer == 0)
                                        break;
                                chdh = peerh;
                        }
                }

                /* add new subtrees */
                (void) add_subtree(parh, sgfruchassisp->handle);
                free(sgfruchassisp);

                nvlist_free(nvlp);
                return;
        }

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

        /*
         * now either add or delete the fru node as appropriate. If no
         * hint, treat as insert - add_subtree will 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_PROPNOTFOUND) {
                        /*
                         * fru was there - but has gone away
                         */
                        post_frudr_event(PICL_FRU_REMOVED, locnodeh, fruh);
                }
        } else {
                /*
                 * fru has been inserted (or may need to update)
                 *
                 * sgfruhdl may be stale due to hotplugging. We check this
                 * by getting the fru_hdl_t from the parent's children
                 * and compare it to the cached value in sgfruhdl.  If we
                 * have a stale handle, we update the cached value and
                 * use it in the call to add_subtree.
                 */
                if (get_fruhdl_from_parent(locnodeh, &sgfruhdl_from_parent) ==
                    PICL_SUCCESS) {
                        if (sgfruhdl != sgfruhdl_from_parent) {
                                update_fru_hdl(locnodeh, sgfruhdl_from_parent);
                                sgfruhdl = sgfruhdl_from_parent;
                        }
                }

                (void) add_subtree(locnodeh, sgfruhdl);
        }
        nvlist_free(nvlp);
}

/*
 * handle memcfg picl events - need to update reference properties
 */
/*ARGSUSED*/
static void
frumemcfg_evhandler(const char *ename, const void *earg, size_t size,
    void *cookie)
{
        picl_nodehdl_t  nodeh;
        picl_nodehdl_t  lochdl;
        picl_nodehdl_t  fruhdl;
        picl_nodehdl_t  memgrphdl;
        picl_nodehdl_t  memhdl;
        picl_prophdl_t  tblhdl;
        picl_prophdl_t  tblproph;
        nvlist_t        *nvlp;
        char    addr[MAXPATHLEN];
        char    bname[PICL_PROPNAMELEN_MAX];
        picl_nodehdl_t  banklochdl;
        picl_nodehdl_t  bankfruhdl;
        char    label[MAX_LABEL_LEN];
        int err;
        int id;
        char *ptr;
        int value;
        char buf[MAX_LINE_SIZE];

        if (strcmp(ename, PICLEVENT_MC_ADDED) != 0 &&
            strcmp(ename, PICLEVENT_MC_REMOVED) != 0)
                return;

        /*
         * find corresponding frutree dimm nodes
         */
        if (nvlist_unpack((char *)earg, size, &nvlp, NULL))
                return;
        if (nvlist_lookup_uint64(nvlp, PICLEVENTARG_NODEHANDLE, &nodeh)) {
                nvlist_free(nvlp);
                return;
        }
        nvlist_free(nvlp);
        err = ptree_get_propval_by_name(nodeh, PICL_PROP_UNIT_ADDRESS, addr,
            sizeof (addr));
        if (err != PICL_SUCCESS)
                return;
        ptr = strchr(addr, ',');
        if (ptr == NULL)
                return;
        *ptr = '\0';
        value = strtol(addr, NULL, 16);
        sprintf_buf5(buf, PROC_FRU_PATH, SAFARI_ADDR_TO_SB(value),
            SAFARI_ADDR_TO_SB(value), SAFARI_ADDR_TO_P(value),
            SAFARI_ADDR_TO_P(value));
        err = ptree_get_node_by_path(buf, &fruhdl);
        if (err != PICL_SUCCESS)
                return;
        err = ptree_get_propval_by_name(fruhdl, PICL_PROP_CHILD,
            &banklochdl, sizeof (banklochdl));
        if (err != PICL_SUCCESS)
                return;

        /*
         * walk through the DIMM locations
         */
        for (;;) {
                err = ptree_get_propval_by_name(banklochdl, PICL_PROP_CHILD,
                    &bankfruhdl, sizeof (bankfruhdl));
                if (err != PICL_SUCCESS)
                        goto next_bank;
                err = ptree_get_propval_by_name(bankfruhdl, PICL_PROP_CHILD,
                    &lochdl, sizeof (lochdl));
                if (err != PICL_SUCCESS)
                        goto next_bank;
                for (;;) {
                        err = ptree_get_propval_by_name(lochdl, PICL_PROP_CHILD,
                            &fruhdl, sizeof (fruhdl));
                        if (err != PICL_SUCCESS)
                                goto next_dimm;

                        /*
                         * this is a frutree dimm node corresponding to the
                         * memory controller that has been added/deleted
                         * - so create/delete reference properties
                         */
                        if (strcmp(ename, PICLEVENT_MC_ADDED) == 0) {
                                /*
                                 * find bank name
                                 */
                                err = ptree_get_propval_by_name(fruhdl,
                                    PICL_PROP_DEVICES, &tblhdl,
                                    sizeof (tblhdl));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;
                                err = ptree_get_propval_by_name(lochdl,
                                    PICL_PROP_LABEL, label, sizeof (label));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;

                                err = ptree_get_propval_by_name(bankfruhdl,
                                    PICL_PROP_NAME, bname, sizeof (bname));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;

                                /*
                                 * find memory group node
                                 */
                                err = ptree_get_propval_by_name(nodeh,
                                    PICL_PROP_CHILD, &memgrphdl,
                                    sizeof (memgrphdl));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;

                                /*
                                 * check if this is the right bank - if not
                                 * move on to sibling
                                 */
                                err = ptree_get_propval_by_name(memgrphdl,
                                    PICL_PROP_ID, &id, sizeof (id));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;
                                if (bname[1] != id + '0') {
                                        err =
                                            ptree_get_propval_by_name(memgrphdl,
                                            PICL_PROP_PEER, &memgrphdl,
                                            sizeof (memgrphdl));
                                        if (err != PICL_SUCCESS)
                                                goto next_dimm;
                                        err =
                                            ptree_get_propval_by_name(memgrphdl,
                                            PICL_PROP_ID, &id, sizeof (id));
                                        if (err != PICL_SUCCESS)
                                                goto next_dimm;
                                        if (bname[1] != id + '0')
                                                goto next_dimm;
                                }

                                /*
                                 * got the right bank - now create appropriate
                                 * link
                                 */
                                err = ptree_get_propval_by_name(memgrphdl,
                                    PICL_PROP_CHILD, &memhdl,
                                    sizeof (memhdl));
                                if (err != PICL_SUCCESS)
                                        goto next_dimm;
                                for (;;) {
                                        err = ptree_get_propval_by_name(memhdl,
                                            PICL_PROP_ID, &id, sizeof (id));
                                        if (err != PICL_SUCCESS)
                                                goto next_dimm;
                                        if (label[1] == ('0' + id)) {
                                                err = add_prop_ref(memhdl,
                                                    fruhdl,
                                                    PICL_REFPROP_FRU_PARENT);
                                                if (err != PICL_SUCCESS)
                                                        return;
                                                err = create_table_entry(tblhdl,
                                                    memhdl,
                                                    PICL_CLASS_MEMORY_MODULE);
                                                if (err != PICL_SUCCESS)
                                                        return;
                                        }
                                        err = ptree_get_propval_by_name(memhdl,
                                            PICL_PROP_PEER,
                                            &memhdl, sizeof (memhdl));
                                        if (err == PICL_PROPNOTFOUND)
                                                break;
                                        if (err != PICL_SUCCESS)
                                                return;
                                }
                        } else if (strcmp(ename, PICLEVENT_MC_REMOVED) == 0) {
                                /*
                                 * XXX - no mechanism for deleting row - so
                                 * delete whole tabel and start again
                                 */
                                err = ptree_get_prop_by_name(fruhdl,
                                    PICL_PROP_DEVICES, &tblproph);
                                if (err == PICL_SUCCESS) {
                                        err = ptree_delete_prop(tblproph);
                                        if (err != PICL_SUCCESS)
                                                return;
                                        (void) ptree_destroy_prop(tblproph);
                                }
                                err = create_table(fruhdl, &tblhdl,
                                    PICL_PROP_DEVICES);
                                if (err != PICL_SUCCESS)
                                        return;
                        }
next_dimm:
                        err = ptree_get_propval_by_name(lochdl,
                            PICL_PROP_PEER, &lochdl, sizeof (lochdl));
                        if (err == PICL_PROPNOTFOUND)
                                break;
                        if (err != PICL_SUCCESS)
                                return;
                }
next_bank:
                err = ptree_get_propval_by_name(banklochdl,
                    PICL_PROP_PEER, &banklochdl, sizeof (banklochdl));
                if (err == PICL_PROPNOTFOUND)
                        break;
                if (err != PICL_SUCCESS)
                        return;
        }
        /*
         * We don't get an event to say that cpu nodes have been added/
         * deleted (in fact as things stand they are never deleted). However
         * we know that all cpus must be configured before the MC_ADDED event
         * we are handling here. So if the cpu links haven't been set up yet
         * then we do it now.
         */
        if (strcmp(ename, PICLEVENT_MC_ADDED) == 0) {
                sprintf_buf4(buf, PROC_LOC_PATH, SAFARI_ADDR_TO_SB(value),
                    SAFARI_ADDR_TO_SB(value), SAFARI_ADDR_TO_P(value));
                err = ptree_get_node_by_path(buf, &lochdl);
                if (err != PICL_SUCCESS)
                        return;
                sprintf_buf5(buf, PROC_FRU_PATH, SAFARI_ADDR_TO_SB(value),
                    SAFARI_ADDR_TO_SB(value), SAFARI_ADDR_TO_P(value),
                    SAFARI_ADDR_TO_P(value));
                err = ptree_get_node_by_path(buf, &fruhdl);
                if (err != PICL_SUCCESS)
                        return;
                sprintf_buf2(buf, "P%d", SAFARI_ADDR_TO_P(value));
                err = ptree_get_propval_by_name(fruhdl,
                    PICL_PROP_DEVICES, &tblhdl, sizeof (tblhdl));
                if (err != PICL_SUCCESS)
                        return;
                (void) create_cpu_references(buf, fruhdl, tblhdl);
        }
}

/*
 * subroutine for add_env_nodes(), and add_led_node(). Adds a sensor
 * node under the sc node in the platform tree, of name "nodename" and
 * class "class". Also add UnitAddress property (always 0 as the nodenames
 * are unique anyway). Add reference property back to parent fru/location node
 * in frutree and a Devices table entry pointing to this node from the
 * parent fru/location node in frutree.
 */
static int
add_sensor_node(picl_nodehdl_t fruhdl, picl_nodehdl_t lochdl, char *nodename,
        char *class, char *prop_class, picl_prophdl_t tblhdl,
        picl_nodehdl_t *sensorhdlp)
{
        int err;

        err = ptree_create_and_add_node(sch, nodename, class, sensorhdlp);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_NODE_FAIL, nodename, err);
                return (err);
        }

        err = create_table_entry(tblhdl, *sensorhdlp, class);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_sensor_prop(*sensorhdlp, prop_class);
        if (err != PICL_SUCCESS)
                return (err);

        err = add_prop_charstring(*sensorhdlp, "0", PICL_PROP_UNIT_ADDRESS);
        if (err != PICL_SUCCESS)
                return (err);

        if (fruhdl != NULL) {
                err = add_prop_ref(*sensorhdlp, fruhdl,
                    PICL_REFPROP_FRU_PARENT);
        } else {
                err = add_prop_ref(*sensorhdlp, lochdl,
                    PICL_REFPROP_LOC_PARENT);
        }
        return (err);
}

/*
 * subroutine for add_sensor_node()/add_env_nodes(). Used for adding dynamic
 * properties
 */
static int
add_sensor_prop(picl_nodehdl_t nodeh, char *class)
{
        ptree_propinfo_t propinfo;
        int err;

        if (strcmp(class, PICL_PROP_TEMPERATURE) == 0) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_INT, PICL_READ + PICL_VOLATILE,
                    sizeof (int), class, get_sensor_data, NULL);
        } else if (strcmp(class, PICL_PROP_FAN_SPEED) == 0) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_INT, PICL_READ + PICL_VOLATILE,
                    sizeof (int), class, get_sensor_data, NULL);
        } else if (strcmp(class, PICL_PROP_FAN_SPEED_UNIT) == 0) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_CHARSTRING, PICL_READ + PICL_VOLATILE,
                    MAX_SPEED_UNIT_LEN, class, get_sensor_data, NULL);
        } else if (strcmp(class, PICL_PROP_CONDITION) == 0) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_CHARSTRING, PICL_READ + PICL_VOLATILE,
                    MAX_CONDITION_LEN, class, get_sensor_data, NULL);
        } else if (strcmp(class, PICL_PROP_STATE) == 0) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_CHARSTRING, PICL_READ + PICL_WRITE +
                    PICL_VOLATILE, MAX_STATE_LEN, class, get_led_data,
                    set_led_data);
        } else {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_FLOAT, PICL_READ + PICL_VOLATILE,
                    sizeof (float), class, get_sensor_data, NULL);
        }
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROPINFO_FAIL, class, err);
                return (err);
        }

        err = ptree_create_and_add_prop(nodeh, &propinfo, NULL, NULL);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, ADD_PROP_FAIL, class, err);
                return (err);
        }
        return (PICL_SUCCESS);
}

/*
 * Get requested kstat
 */
static int
open_kstat(char *name, void **ptr, kstat_ctl_t **kcp)
{
        kstat_t *info_ksp;

        *kcp = kstat_open();
        if (*kcp == NULL) {
                syslog(LOG_ERR, KSTAT_FAIL);
                return (PICL_FAILURE);
        }
        info_ksp = kstat_lookup(*kcp, NULL, -1, name);
        if (info_ksp == NULL) {
                kstat_close(*kcp);
                syslog(LOG_ERR, KSTAT_FAIL);
                return (PICL_FAILURE);
        }
        if (kstat_read(*kcp, info_ksp, NULL) == -1) {
                kstat_close(*kcp);
                syslog(LOG_ERR, KSTAT_FAIL);
                return (PICL_FAILURE);
        }
        *ptr = info_ksp;
        return (PICL_SUCCESS);
}

/*
 * dimm status - uses bank-status property on memory-controller node
 */

static int
get_dimm_status(ptree_rarg_t *arg, void *result)
{
        int err;
        int i;
        picl_prophdl_t  tblhdl;
        picl_prophdl_t  nextprop;
        picl_prophdl_t  refprop;
        picl_prophdl_t  mmgprop;
        picl_prophdl_t  mcprop;
        picl_prophdl_t  bankprop;
        char    nodename[PICL_PROPNAMELEN_MAX];
        char    class[PICL_CLASSNAMELEN_MAX];
        char    bankname[PICL_PROPNAMELEN_MAX];
        char    state[MAX_STATE_SIZE];

        /*
         * find the name of this node
         */
        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, nodename,
            sizeof (nodename));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }

        /*
         * find the name of grandparent (dimm bank) node
         */
        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_PARENT, &bankprop,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(bankprop, PICL_PROP_PARENT, &bankprop,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(bankprop, PICL_PROP_NAME, bankname,
            sizeof (bankname));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_NAME, err);
                return (err);
        }

        /*
         * lookup memory-module node in Devices table
         */
        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_DEVICES, &tblhdl,
            sizeof (tblhdl));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_DEVICES, err);
                return (err);
        }
        err = ptree_get_next_by_row(tblhdl, &nextprop);
        if (err != PICL_SUCCESS) {
                /*
                 * if Devices table empty then dimm is unconfigured
                 */
                (void) strlcpy(result, PICL_PROPVAL_DISABLED,
                    MAX_OPERATIONAL_STATUS_LEN);
                return (PICL_SUCCESS);
        }
        err = ptree_get_next_by_row(nextprop, &nextprop);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, GET_NEXT_BY_ROW_FAIL, PICL_PROP_DEVICES, err);
                return (err);
        }

        /*
         * walk down second column (ref ptr)
         */
        while (err == PICL_SUCCESS) {
                err = ptree_get_propval(nextprop, &refprop, sizeof (refprop));
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, GET_PROPVAL_FAIL, err);
                        return (PICL_PROPVALUNAVAILABLE);
                }
                err = ptree_get_propval_by_name(refprop, PICL_PROP_CLASSNAME,
                    class, sizeof (class));
                if (err == PICL_SUCCESS && strcmp(class,
                    PICL_CLASS_MEMORY_MODULE) == 0)
                        break;
                if (err != PICL_SUCCESS && err != PICL_STALEHANDLE) {
                        syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_CLASSNAME,
                            err);
                        return (err);
                }
                err = ptree_get_next_by_col(nextprop, &nextprop);
                if (err != PICL_SUCCESS) {
                        /*
                         * if no memory-module in Devices table
                         *  then dimm is unconfigured
                         */
                        (void) strlcpy(result, PICL_PROPVAL_DISABLED,
                            MAX_OPERATIONAL_STATUS_LEN);
                        return (PICL_SUCCESS);
                }
        }

        /*
         * we've finally found the associated memory-module
         * node. Now need to find the bank-status property on
         * its parent memory-controller.
         */
        err = ptree_get_propval_by_name(refprop, PICL_PROP_PARENT,
            &mmgprop, sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(mmgprop, PICL_PROP_PARENT, &mcprop,
            sizeof (picl_nodehdl_t));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_PARENT, err);
                return (err);
        }
        err = ptree_get_propval_by_name(mcprop, PICL_PROP_BANK_STATUS, &tblhdl,
            sizeof (tblhdl));
        if (err != PICL_SUCCESS) {
                (void) strlcpy(result, PICL_PROPVAL_UNKNOWN,
                    MAX_OPERATIONAL_STATUS_LEN);
                return (PICL_SUCCESS);
        }

        /*
         * bank-status is a table. Need to find the entry corresponding
         * to this node
         */
        err = ptree_get_next_by_row(tblhdl, &nextprop);
        if (err != PICL_SUCCESS) {
                (void) strlcpy(result, PICL_PROPVAL_UNKNOWN,
                    MAX_OPERATIONAL_STATUS_LEN);
                return (PICL_SUCCESS);
        }
        for (i = 0; i < 4; i++) {
                err = ptree_get_propval(nextprop, &state, sizeof (state));
                if (err != PICL_SUCCESS) {
                        (void) strlcpy(result, PICL_PROPVAL_UNKNOWN,
                            MAX_OPERATIONAL_STATUS_LEN);
                        return (err);
                }
                if ((i & 1) == (bankname[1] - '0')) {
                        if (strcmp(state, "pass") == 0) {
                                (void) strlcpy(result, PICL_PROPVAL_OKAY,
                                    MAX_OPERATIONAL_STATUS_LEN);
                        } else if (strcmp(state, "fail") == 0) {
                                (void) strlcpy(result, PICL_PROPVAL_FAILED,
                                    MAX_OPERATIONAL_STATUS_LEN);
                        } else {
                                (void) strlcpy(result, state,
                                    MAX_OPERATIONAL_STATUS_LEN);
                        }
                        break;
                }
                err = ptree_get_next_by_col(nextprop, &nextprop);
                if (err != PICL_SUCCESS) {
                        (void) strlcpy(result, PICL_PROPVAL_OKAY,
                            MAX_OPERATIONAL_STATUS_LEN);
                        break;
                }
        }
        return (PICL_SUCCESS);
}

/*
 * cpu status - uses State property on cpu node
 */

static int
get_cpu_status(ptree_rarg_t *arg, void *result)
{
        int err;
        picl_prophdl_t  tblhdl;
        picl_prophdl_t  nextprop;
        picl_prophdl_t  refprop;
        char    class[PICL_CLASSNAMELEN_MAX];
        char    state[MAX_STATE_SIZE];

        /*
         * lookup cpu node in Devices table
         */
        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_DEVICES, &tblhdl,
            sizeof (tblhdl));
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_DEVICES, err);
                return (err);
        }
        err = ptree_get_next_by_row(tblhdl, &nextprop);
        if (err != PICL_SUCCESS) {
                /*
                 * if Devices table empty then cpu is unconfigured
                 */
                (void) strlcpy(result, PICL_PROPVAL_DISABLED,
                    MAX_OPERATIONAL_STATUS_LEN);
                return (PICL_SUCCESS);
        }
        err = ptree_get_next_by_row(nextprop, &nextprop);
        if (err != PICL_SUCCESS) {
                syslog(LOG_ERR, GET_NEXT_BY_ROW_FAIL, PICL_PROP_DEVICES, err);
                return (err);
        }

        /*
         * walk down second column (ref ptr)
         */
        while (err == PICL_SUCCESS) {
                err = ptree_get_propval(nextprop, &refprop, sizeof (refprop));
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, GET_PROPVAL_FAIL, err);
                        return (err);
                }
                err = ptree_get_propval_by_name(refprop, PICL_PROP_CLASSNAME,
                    class, sizeof (class));
                if (err == PICL_SUCCESS && strcmp(class, PICL_CLASS_CPU) == 0)
                        break;
                if (err != PICL_SUCCESS && err != PICL_STALEHANDLE) {
                        syslog(LOG_ERR, PROP_LOOKUP_FAIL, PICL_PROP_CLASSNAME,
                            err);
                        return (err);
                }
                err = ptree_get_next_by_col(nextprop, &nextprop);
                if (err != PICL_SUCCESS) {
                        /*
                         * if no cpu in Devices table
                         *  then cpu is unconfigured
                         */
                        (void) strlcpy(result, PICL_PROPVAL_DISABLED,
                            MAX_OPERATIONAL_STATUS_LEN);
                        return (PICL_SUCCESS);
                }
        }

        /*
         * we've finally found the associated cpu node. Now need to find its
         * status property if present (if not assume OK)
         */
        err = ptree_get_propval_by_name(refprop, OBP_STATUS,
            state, sizeof (state));
        if (err == PICL_SUCCESS) {
                if (strcmp(state, "fail") == 0)
                        (void) strlcpy(result, PICL_PROPVAL_FAILED,
                            MAX_OPERATIONAL_STATUS_LEN);
                else
                        (void) strlcpy(result, state,
                            MAX_OPERATIONAL_STATUS_LEN);
                return (PICL_SUCCESS);
        }

        (void) strlcpy(result, PICL_PROPVAL_OKAY, MAX_OPERATIONAL_STATUS_LEN);
        return (PICL_SUCCESS);
}

/*
 * system/io board condition - uses sgenv driver kstats
 */

static int
get_board_status(ptree_rarg_t *arg, void *result)
{
        int err = PICL_SUCCESS;
        int i;
        sg_board_info_t *brd;
        char name[PICL_PROPNAMELEN_MAX];
        char buf[PICL_PROPNAMELEN_MAX];
        kstat_ctl_t *kc;
        kstat_t *board_info_ksp;

        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, name,
            sizeof (name));
        if (err != PICL_SUCCESS) {
                return (err);
        }

        err = open_kstat(SG_BOARD_STATUS_KSTAT_NAME, (void **)&board_info_ksp,
            &kc);
        if (err != PICL_SUCCESS) {
                return (err);
        }

        brd = board_info_ksp->ks_data;
        for (i = 0; i < SGENV_NUM_BOARD_READINGS(board_info_ksp); i++, brd++) {
                /*
                 * check this kstat matches the name of the node
                 */
                if (SG_BOARD_IS_CPU_TYPE(brd->board_num)) {
                        sprintf_buf3(buf, "%s%d",
                            SG_HPU_TYPE_CPU_BOARD_ID, brd->board_num);
                } else {
                        sprintf_buf3(buf, "%s%d",
                            SG_HPU_TYPE_PCI_IO_BOARD_ID, brd->board_num);
                }
                if (strncmp(buf, name, strlen(buf)) != 0)
                        continue;

                /*
                 * ok - got the right kstat - get it's value
                 * note that values 0-4 are defined in sbdp_mbox.h
                 */
                if (brd->condition >= 0 && brd->condition < 5)
                        (void) strlcpy(result,
                            hpu_condition_table[brd->condition],
                            MAX_OPERATIONAL_STATUS_LEN);
                kstat_close(kc);
                return (PICL_SUCCESS);
        }
        kstat_close(kc);
        return (PICL_PROPVALUNAVAILABLE);
}

static int
get_op_status(ptree_rarg_t *arg, void *result)
{
        int err = PICL_SUCCESS;
        char name[PICL_PROPNAMELEN_MAX];
        char value[MAX_STATE_LEN];
        char    parent_name[PICL_PROPNAMELEN_MAX];
        picl_nodehdl_t loch;
        picl_nodehdl_t parentfruh;

        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, name,
            sizeof (name));
        if (err != PICL_SUCCESS) {
                return (err);
        }

        /*
         * handle dimms, cpus and system boards specially
         */
        if (IS_PROC_NODE(name)) {
                return (get_cpu_status(arg, result));
        } else if (IS_DIMM_NODE(name)) {
                return (get_dimm_status(arg, result));
        } else if (IS_SB_NODE(name) || IS_IB_NODE(name)) {
                return (get_board_status(arg, result));
        }

        /*
         * otherwise OperationalStatus is derived from the fault led state
         */

        /*
         * scapp knows FANs 0 and 1 on IB as FAN8 and FAN9
         */
        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_PARENT, &loch,
            sizeof (loch));
        if (err != PICL_SUCCESS)
                return (PICL_PROPVALUNAVAILABLE);
        err = ptree_get_propval_by_name(loch, PICL_PROP_PARENT, &parentfruh,
            sizeof (parentfruh));
        if (err != PICL_SUCCESS)
                return (PICL_PROPVALUNAVAILABLE);
        err = ptree_get_propval_by_name(parentfruh, PICL_PROP_NAME, parent_name,
            sizeof (parent_name));
        if (err != PICL_SUCCESS)
                return (PICL_PROPVALUNAVAILABLE);
        if (strcmp(name, "FAN0") == 0 && strcmp(parent_name, "IB6") == 0) {
                if (get_led("FAN8", FAULT_LED, value) != PICL_SUCCESS) {
                        return (PICL_PROPVALUNAVAILABLE);
                }
        } else if (strcmp(name, "FAN1") == 0 && strcmp(parent_name,
            "IB6") == 0) {
                if (get_led("FAN9", FAULT_LED, value) != PICL_SUCCESS) {
                        return (PICL_PROPVALUNAVAILABLE);
                }
        } else {
                if (get_led(name, FAULT_LED, value) != PICL_SUCCESS) {
                        return (PICL_PROPVALUNAVAILABLE);
                }
        }
        if (strcmp(value, PICL_PROPVAL_ON) == 0)
                (void) strlcpy(result, PICL_PROPVAL_FAILED,
                    MAX_OPERATIONAL_STATUS_LEN);
        else
                (void) strlcpy(result, PICL_PROPVAL_OKAY,
                    MAX_OPERATIONAL_STATUS_LEN);
        return (PICL_SUCCESS);
}

static int
add_board_status(picl_nodehdl_t nodeh, char *nodename)
{
        ptree_propinfo_t propinfo;
        int err;
        picl_prophdl_t prophdl;

        /*
         * check if OperationalStatus property already created for this fru
         */
        err = ptree_get_prop_by_name(nodeh, PICL_PROP_OPERATIONAL_STATUS,
            &prophdl);
        if (err == PICL_SUCCESS)
                return (PICL_SUCCESS);

        /*
         * put operational status on dimms, cpus, SBs, IBs, PSUs, FTs, Fans, RPs
         */
        if (IS_DIMM_NODE(nodename) || IS_PROC_NODE(nodename) ||
            IS_SB_NODE(nodename) || IS_IB_NODE(nodename) ||
            IS_PSU_NODE(nodename) || IS_FT_NODE(nodename) ||
            IS_FAN_NODE(nodename) || IS_RP_NODE(nodename)) {
                err = ptree_init_propinfo(&propinfo, PTREE_PROPINFO_VERSION,
                    PICL_PTYPE_CHARSTRING, PICL_READ + PICL_VOLATILE,
                    MAX_OPERATIONAL_STATUS_LEN, PICL_PROP_OPERATIONAL_STATUS,
                    get_op_status, NULL);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, PROPINFO_FAIL,
                            PICL_PROP_OPERATIONAL_STATUS, err);
                        return (err);
                }
                err = ptree_create_and_add_prop(nodeh, &propinfo, NULL, NULL);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, ADD_PROP_FAIL,
                            PICL_PROP_OPERATIONAL_STATUS, err);
                        return (err);
                }
        }
        return (PICL_SUCCESS);
}

/*
 * environmental information handling - uses sgenv driver kstats
 */

static int
add_env_nodes(picl_nodehdl_t nodeh, char *nodename, picl_prophdl_t tblhdl)
{
        int err = PICL_SUCCESS;
        env_sensor_t    *env;
        int     i;
        picl_prophdl_t  tblhdl2;
        picl_prophdl_t  frutype;
        char fruname[PICL_PROPNAMELEN_MAX];
        char buf[PICL_PROPNAMELEN_MAX];
        char id[PICL_PROPNAMELEN_MAX];
        float scale;
        picl_nodehdl_t childh;
        picl_nodehdl_t sensorhdl;
        kstat_ctl_t *kc;
        kstat_t *env_info_ksp;

        err = open_kstat(SG_ENV_INFO_KSTAT_NAME, (void **)&env_info_ksp, &kc);
        if (err != PICL_SUCCESS) {
                return (err);
        }

        env = env_info_ksp->ks_data;
        for (i = 0; i < SGENV_NUM_ENV_READINGS(env_info_ksp); i++, env++) {
                /*
                 * check values from kstat entry are within valid range
                 */
                if (env->sd_id.id.sensor_type < SG_SENSOR_TYPE_CURRENT)
                        continue;
                if (env->sd_id.id.sensor_type == SG_SENSOR_TYPE_ENVDB)
                        continue;
                if (env->sd_id.id.sensor_type > SG_SENSOR_TYPE_2_5_VDC)
                        continue;
                if ((env->sd_id.id.hpu_type >> 8) >=
                    (SG_HPU_TYPE_SUN_FIRE_3800_CENTERPLANE >> 8))
                        continue;
                if (env->sd_id.id.sensor_part > SG_SENSOR_PART_INPUT)
                        continue;

                /*
                 * does this kstat entry belong to this fru?
                 * Note sc reports RPS as 10 and 12 via env messages
                 * but by 0 and 2 via fru messages, so correct here
                 */
                if ((env->sd_id.id.hpu_type >> 8) ==
                    (SG_HPU_TYPE_REPEATER_BOARD >> 8)) {
                        sprintf_buf3(fruname, "%s%d",
                            hpu_type_table[env->sd_id.id.hpu_type >> 8],
                            env->sd_id.id.hpu_slot - 10);
                } else {
                        sprintf_buf3(fruname, "%s%d",
                            hpu_type_table[env->sd_id.id.hpu_type >> 8],
                            env->sd_id.id.hpu_slot);
                }
                if (strcmp(nodename, fruname) != 0)
                        continue;

                /*
                 * set up FRUType. Note we only want to do this once per fru
                 */
                err = ptree_get_prop_by_name(nodeh, PICL_PROP_FRU_TYPE,
                    &frutype);
                if (err != PICL_SUCCESS) {
                        err = add_prop_charstring(nodeh,
                            hpu_fru_type_table[env->sd_id.id.hpu_type >> 8],
                            PICL_PROP_FRU_TYPE);
                        if (err != PICL_SUCCESS)
                                goto done;
                }

                /*
                 * create the sensor node with a sensible name
                 */
                switch (env->sd_id.id.sensor_type) {
                case SG_SENSOR_TYPE_TEMPERATURE:
                        if (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD) {
                                sprintf_buf2(id, "t_ambient%d",
                                    env->sd_id.id.sensor_typenum);
                        } else {
                                sprintf_buf3(id, "t_%s%d",
                                    hpu_part_table[env->sd_id.id.sensor_part],
                                    env->sd_id.id.sensor_partnum);
                        }
                        break;
                case SG_SENSOR_TYPE_CURRENT:
                        sprintf_buf3(id, "i_%s%d",
                            hpu_part_table[env->sd_id.id.sensor_part],
                            env->sd_id.id.sensor_partnum);
                        break;
                case SG_SENSOR_TYPE_COOLING:
                        sprintf_buf3(id, "ft_%s%d",
                            hpu_part_table[env->sd_id.id.sensor_part],
                            env->sd_id.id.sensor_partnum);
                        break;
                default: /* voltage */
                        if (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD) {
                                sprintf_buf3(id, "v_%s%d",
                                    hpu_sensor_table[env->sd_id.id.sensor_type],
                                    env->sd_id.id.sensor_typenum);
                        } else {
                                sprintf_buf3(id, "v_%s%d",
                                    hpu_part_table[env->sd_id.id.sensor_part],
                                    env->sd_id.id.sensor_partnum);
                        }
                        break;
                }

                /*
                 * check if sensor node has already been created
                 */
                sprintf_buf3(buf, "%s_%s", nodename, id);
                if (find_child_by_name(sch, buf) != NULL)
                        continue;

                if (env->sd_id.id.sensor_type == SG_SENSOR_TYPE_COOLING) {
                        /*
                         * create individual fan_unit nodes
                         */
                        childh = nodeh;
                        sprintf_buf2(fruname, "FAN%d",
                            env->sd_id.id.sensor_partnum);
                        err = add_intermediate_nodes(&childh, fruname,
                            &tblhdl2, "fan-unit", "FAN");
                        if (err != PICL_SUCCESS)
                                goto done;
                        err = add_board_status(childh, fruname);
                        if (err != PICL_SUCCESS)
                                goto done;
                } else if (env->sd_id.id.sensor_part ==
                    SG_SENSOR_PART_CHEETAH ||
                    ((env->sd_id.id.hpu_type >> 8) ==
                    (SG_HPU_TYPE_CPU_BOARD >> 8) &&
                    (env->sd_id.id.sensor_type == SG_SENSOR_TYPE_TEMPERATURE) &&
                    (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD))) {
                        /*
                         * put sensors under individual processor nodes
                         */
                        childh = nodeh;
                        if (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD)
                                sprintf_buf2(fruname, "P%d",
                                    env->sd_id.id.sensor_typenum);
                        else
                                sprintf_buf2(fruname, "P%d",
                                    env->sd_id.id.sensor_partnum);
                        err = add_intermediate_nodes(&childh, fruname,
                            &tblhdl2, "cpu", "PROC");
                        if (err != PICL_SUCCESS)
                                goto done;
                } else {
                        childh = nodeh;
                        tblhdl2 = tblhdl;
                }
                err = add_sensor_node(childh, NULL, buf,
                    hpu_sensor_class_table[env->sd_id.id.sensor_type],
                    hpu_sensor_prop_table[env->sd_id.id.sensor_type],
                    tblhdl2, &sensorhdl);
                if (err != PICL_SUCCESS)
                        goto done;

                /*
                 * add additional properties
                 */
                switch (env->sd_id.id.sensor_type) {
                case SG_SENSOR_TYPE_COOLING:
                        err = add_prop_charstring(sensorhdl, id,
                            PICL_PROP_LABEL);
                        if (err != PICL_SUCCESS)
                                goto done;
                        /*
                         * add threshold at 75% of full speed
                         */
                        err = add_prop_int(sensorhdl, 75,
                            PICL_PROP_LOW_WARNING_THRESHOLD);
                        if (err != PICL_SUCCESS)
                                goto done;
                        err = add_sensor_prop(sensorhdl,
                            PICL_PROP_FAN_SPEED_UNIT);
                        if (err != PICL_SUCCESS)
                                goto done;
                        continue;
                case SG_SENSOR_TYPE_TEMPERATURE:
                        if ((env->sd_id.id.hpu_type >> 8 ==
                            (SG_HPU_TYPE_CPU_BOARD >> 8)) &&
                            (env->sd_id.id.sensor_part ==
                            SG_SENSOR_PART_BOARD)) {
                                err = add_prop_charstring(sensorhdl,
                                    PICL_PROPVAL_AMBIENT, PICL_PROP_LABEL);
                                if (err != PICL_SUCCESS)
                                        goto done;
                        } else if (env->sd_id.id.sensor_part ==
                            SG_SENSOR_PART_CHEETAH) {
                                err = add_prop_charstring(sensorhdl,
                                    PICL_PROPVAL_DIE, PICL_PROP_LABEL);
                                if (err != PICL_SUCCESS)
                                        goto done;
                        } else {
                                err = add_prop_charstring(sensorhdl, id,
                                    PICL_PROP_LABEL);
                                if (err != PICL_SUCCESS)
                                        goto done;
                        }
                        err = add_prop_int(sensorhdl, env->sd_lo_warn /
                            SG_TEMPERATURE_SCALE, PICL_PROP_LOW_WARNING);
                        if (err != PICL_SUCCESS)
                                goto done;
                        err = add_prop_int(sensorhdl, env->sd_lo /
                            SG_TEMPERATURE_SCALE, PICL_PROP_LOW_SHUTDOWN);
                        if (err != PICL_SUCCESS)
                                goto done;
                        err = add_prop_int(sensorhdl, env->sd_hi_warn /
                            SG_TEMPERATURE_SCALE, PICL_PROP_HIGH_WARNING);
                        if (err != PICL_SUCCESS)
                                goto done;
                        err = add_prop_int(sensorhdl, env->sd_hi /
                            SG_TEMPERATURE_SCALE, PICL_PROP_HIGH_SHUTDOWN);
                        if (err != PICL_SUCCESS)
                                goto done;
                        continue;
                case SG_SENSOR_TYPE_1_5_VDC:
                        scale = SG_1_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_1_8_VDC:
                        scale = SG_1_8_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_2_5_VDC:
                        scale = SG_2_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_3_3_VDC:
                        scale = SG_3_3_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_5_VDC:
                        scale = SG_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_12_VDC:
                        scale = SG_12_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_48_VDC:
                        /*
                         * The 48VDC sensor is just an indicator - doesn't
                         * give reading or thresholds
                         */
                        err = add_prop_charstring(sensorhdl, id,
                            PICL_PROP_LABEL);
                        if (err != PICL_SUCCESS)
                                goto done;
                        continue;
                case SG_SENSOR_TYPE_CURRENT:
                        scale = SG_CURRENT_SCALE;
                        break;
                }
                err = add_prop_charstring(sensorhdl, id, PICL_PROP_LABEL);
                if (err != PICL_SUCCESS)
                        goto done;
                err = add_prop_float(sensorhdl, (float)env->sd_lo_warn / scale,
                    PICL_PROP_LOW_WARNING);
                if (err != PICL_SUCCESS)
                        goto done;
                err = add_prop_float(sensorhdl, (float)env->sd_lo / scale,
                    PICL_PROP_LOW_SHUTDOWN);
                if (err != PICL_SUCCESS)
                        goto done;
                err = add_prop_float(sensorhdl, (float)env->sd_hi_warn / scale,
                    PICL_PROP_HIGH_WARNING);
                if (err != PICL_SUCCESS)
                        goto done;
                err = add_prop_float(sensorhdl, (float)env->sd_hi / scale,
                    PICL_PROP_HIGH_SHUTDOWN);
                if (err != PICL_SUCCESS)
                        goto done;
        }
done:
        kstat_close(kc);
        return (err);
}

static int
get_sensor_data(ptree_rarg_t *arg, void *result)
{
        int err;                                /* return code */
        kstat_ctl_t             *kc;
        char    name[PICL_PROPNAMELEN_MAX];
        ptree_propinfo_t propinfo;
        int     i;
        env_sensor_t    *env;
        char buf[PICL_PROPNAMELEN_MAX];
        char buf1[PICL_PROPNAMELEN_MAX];
        kstat_t *env_info_ksp;

        err = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, name,
            sizeof (name));
        if (err != PICL_SUCCESS)
                return (err);
        err = ptree_get_propinfo(arg->proph, &propinfo);
        if (err != PICL_SUCCESS)
                return (err);

        err = open_kstat(SG_ENV_INFO_KSTAT_NAME, (void **)&env_info_ksp, &kc);
        if (err != PICL_SUCCESS) {
                return (err);
        }

        env = env_info_ksp->ks_data;
        for (i = 0; i < SGENV_NUM_ENV_READINGS(env_info_ksp); i++, env++) {
                /*
                 * check kstat values are within range
                 */
                if (SG_INFO_VALUESTATUS(env->sd_infostamp) != SG_INFO_VALUE_OK)
                        continue;
                if (env->sd_id.id.sensor_type < SG_SENSOR_TYPE_CURRENT)
                        continue;
                if (env->sd_id.id.sensor_type == SG_SENSOR_TYPE_ENVDB)
                        continue;
                if (env->sd_id.id.sensor_type > SG_SENSOR_TYPE_2_5_VDC)
                        continue;
                if ((env->sd_id.id.hpu_type >> 8) >=
                    (SG_HPU_TYPE_SUN_FIRE_3800_CENTERPLANE >> 8))
                        continue;
                if (env->sd_id.id.sensor_part > SG_SENSOR_PART_INPUT)
                        continue;

                /*
                 * check this kstat matches the name of the node
                 * note sc reports RPS as 10 and 12 via env messages
                 * but by 0 and 2 via fru messages, so correct here
                 */
                if ((env->sd_id.id.hpu_type >> 8) ==
                    (SG_HPU_TYPE_REPEATER_BOARD >> 8))
                        sprintf_buf3(buf, "%s%d",
                            hpu_type_table[env->sd_id.id.hpu_type >> 8],
                            env->sd_id.id.hpu_slot - 10);
                else
                        sprintf_buf3(buf, "%s%d",
                            hpu_type_table[env->sd_id.id.hpu_type >> 8],
                            env->sd_id.id.hpu_slot);
                switch (env->sd_id.id.sensor_type) {
                case SG_SENSOR_TYPE_TEMPERATURE:
                        if (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD) {
                                sprintf_buf3(buf1, "%s_t_ambient%d",
                                    buf, env->sd_id.id.sensor_typenum);
                        } else {
                                sprintf_buf4(buf1, "%s_t_%s%d", buf,
                                    hpu_part_table[env->sd_id.id.sensor_part],
                                    env->sd_id.id.sensor_partnum);
                        }
                        break;
                case SG_SENSOR_TYPE_CURRENT:
                        sprintf_buf4(buf1, "%s_i_%s%d", buf,
                            hpu_part_table[env->sd_id.id.sensor_part],
                            env->sd_id.id.sensor_partnum);
                        break;
                case SG_SENSOR_TYPE_COOLING:
                        sprintf_buf4(buf1, "%s_ft_%s%d", buf,
                            hpu_part_table[env->sd_id.id.sensor_part],
                            env->sd_id.id.sensor_partnum);
                        break;
                default: /* voltage */
                        if (env->sd_id.id.sensor_part == SG_SENSOR_PART_BOARD) {
                                sprintf_buf4(buf1, "%s_v_%s%d", buf,
                                    hpu_sensor_table[env->sd_id.id.sensor_type],
                                    env->sd_id.id.sensor_typenum);
                        } else {
                                sprintf_buf4(buf1, "%s_v_%s%d", buf,
                                    hpu_part_table[env->sd_id.id.sensor_part],
                                    env->sd_id.id.sensor_partnum);
                        }
                        break;
                }
                if (strcmp(buf1, name) != 0)
                        continue;

                /*
                 * ok - this is the kstat we want - update
                 * Condition, or sensor reading as requested
                 */
                if (strcmp(propinfo.piclinfo.name, PICL_PROP_CONDITION) == 0) {
                        switch (SG_GET_SENSOR_STATUS(env->sd_status)) {
                        case SG_SENSOR_STATUS_OK:
                                (void) strlcpy(result, PICL_PROPVAL_OKAY,
                                    MAX_CONDITION_LEN);
                                break;
                        case SG_SENSOR_STATUS_LO_WARN:
                        case SG_SENSOR_STATUS_HI_WARN:
                                (void) strlcpy(result, PICL_PROPVAL_WARNING,
                                    MAX_CONDITION_LEN);
                                break;
                        case SG_SENSOR_STATUS_LO_DANGER:
                        case SG_SENSOR_STATUS_HI_DANGER:
                                (void) strlcpy(result, PICL_PROPVAL_FAILED,
                                    MAX_CONDITION_LEN);
                                break;
                        default:
                                kstat_close(kc);
                                return (PICL_PROPVALUNAVAILABLE);
                        }
                        kstat_close(kc);
                        return (PICL_SUCCESS);
                }
                switch (env->sd_id.id.sensor_type) {
                case SG_SENSOR_TYPE_TEMPERATURE:
                        *(int *)result = env->sd_value / SG_TEMPERATURE_SCALE;
                        break;
                case SG_SENSOR_TYPE_1_5_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_1_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_1_8_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_1_8_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_2_5_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_2_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_3_3_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_3_3_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_5_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_5_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_12_VDC:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_12_VDC_SCALE;
                        break;
                case SG_SENSOR_TYPE_CURRENT:
                        *(float *)result =
                            (float)env->sd_value / (float)SG_CURRENT_SCALE;
                        break;
                case SG_SENSOR_TYPE_COOLING:
                        if (strcmp(propinfo.piclinfo.name,
                            PICL_PROP_FAN_SPEED_UNIT) == 0) {
                                if (SG_GET_SENSOR_STATUS(env->sd_status) ==
                                    SG_SENSOR_STATUS_FAN_LOW) {
                                        (void) strlcpy(result,
                                            PICL_PROPVAL_SELF_REGULATING,
                                            MAX_SPEED_UNIT_LEN);
                                } else {
                                        (void) strlcpy(result,
                                            PICL_PROPVAL_PER_CENT,
                                            MAX_SPEED_UNIT_LEN);
                                }
                        } else {
                                switch (SG_GET_SENSOR_STATUS(env->sd_status)) {
                                case SG_SENSOR_STATUS_FAN_HIGH:
                                        *(int *)result = 100;
                                        break;
                                case SG_SENSOR_STATUS_FAN_FAIL:
                                case SG_SENSOR_STATUS_FAN_OFF:
                                        *(int *)result = 0;
                                        break;
                                default:
                                case SG_SENSOR_STATUS_FAN_LOW:
                                        kstat_close(kc);
                                        return (PICL_PROPVALUNAVAILABLE);
                                }
                        }
                        break;
                default:
                        kstat_close(kc);
                        return (PICL_PROPVALUNAVAILABLE);
                }
                kstat_close(kc);
                return (PICL_SUCCESS);
        }
        kstat_close(kc);
        return (PICL_PROPVALUNAVAILABLE);
}

/*
 * led information handling - uses lw8 driver
 */

static int
add_led_nodes(picl_nodehdl_t nodeh, char *name, int position,
    picl_prophdl_t tblhdl)
{
        int err;
        int  ledfd;
        lom_get_led_t lom_get_led;
        picl_nodehdl_t sensorhdl;
        char buf[PICL_PROPNAMELEN_MAX];

        /*
         * Open the lw8 pseudo dev to get the led information
         */
        if ((ledfd = open(LED_PSEUDO_DEV, O_RDWR, 0)) == -1) {
                syslog(LOG_ERR, DEV_OPEN_FAIL, LED_PSEUDO_DEV, strerror(errno));
                return (PICL_SUCCESS);
        }
        bzero(&lom_get_led, sizeof (lom_get_led));
        (void) strlcpy(lom_get_led.location, name,
            sizeof (lom_get_led.location));
        if (ioctl(ledfd, LOMIOCGETLED, &lom_get_led) == -1) {
                (void) close(ledfd);
                syslog(LOG_ERR, LED_IOCTL_FAIL, strerror(errno));
                return (PICL_FAILURE);
        }
        while (lom_get_led.next_id[0] != '\0') {
                (void) strlcpy(lom_get_led.id, lom_get_led.next_id,
                    sizeof (lom_get_led.id));
                lom_get_led.next_id[0] = '\0';
                lom_get_led.position = LOM_LED_POSITION_FRU;
                if (ioctl(ledfd, LOMIOCGETLED, &lom_get_led) == -1) {
                        (void) close(ledfd);
                        syslog(LOG_ERR, LED_IOCTL_FAIL, strerror(errno));
                        return (PICL_FAILURE);
                }
                sprintf_buf3(buf, "%s_%s", name, lom_get_led.id);
                if (position != lom_get_led.position)
                        continue;
                if (position == LOM_LED_POSITION_LOCATION) {
                        err = add_sensor_node(NULL, nodeh, buf, PICL_CLASS_LED,
                            PICL_PROP_STATE, tblhdl, &sensorhdl);
                } else {
                        err = add_sensor_node(nodeh, NULL, buf, PICL_CLASS_LED,
                            PICL_PROP_STATE, tblhdl, &sensorhdl);
                }
                if (err != PICL_SUCCESS) {
                        (void) close(ledfd);
                        return (err);
                }
                if (strcmp(name, "chassis") == 0 && strcmp(lom_get_led.id,
                    "locator") == 0) {
                        err = add_prop_charstring(sensorhdl, PICL_PROPVAL_TRUE,
                            PICL_PROP_IS_LOCATOR);
                        if (err != PICL_SUCCESS) {
                                (void) close(ledfd);
                                return (err);
                        }
                        err = add_prop_charstring(sensorhdl,
                            PICL_PROPVAL_SYSTEM, PICL_PROP_LOCATOR_NAME);
                        if (err != PICL_SUCCESS) {
                                (void) close(ledfd);
                                return (err);
                        }
                }
                err = add_prop_charstring(sensorhdl, lom_get_led.id,
                    PICL_PROP_LABEL);
                if (err != PICL_SUCCESS) {
                        (void) close(ledfd);
                        return (err);
                }
                err = add_prop_charstring(sensorhdl, lom_get_led.color,
                    PICL_PROP_COLOR);
                if (err != PICL_SUCCESS) {
                        (void) close(ledfd);
                        return (err);
                }
        }
        (void) close(ledfd);
        return (PICL_SUCCESS);
}

static int
get_led(char *name, char *ptr, char *result)
{
        int ledfd;
        lom_get_led_t lom_get_led;

        /*
         * Open the lw8 pseudo dev to get the led information
         */
        if ((ledfd = open(LED_PSEUDO_DEV, O_RDWR, 0)) == -1) {
                syslog(LOG_ERR, DEV_OPEN_FAIL, LED_PSEUDO_DEV, strerror(errno));
                return (PICL_FAILURE);
        }
        bzero(&lom_get_led, sizeof (lom_get_led));
        (void) strlcpy(lom_get_led.location, name,
            sizeof (lom_get_led.location));
        (void) strlcpy(lom_get_led.id, ptr, sizeof (lom_get_led.id));
        if (ioctl(ledfd, LOMIOCGETLED, &lom_get_led) == -1) {
                (void) close(ledfd);
                syslog(LOG_ERR, LED_IOCTL_FAIL, strerror(errno));
                return (PICL_PROPVALUNAVAILABLE);
        }
        if (lom_get_led.status == LOM_LED_STATUS_ON)
                (void) strlcpy(result, PICL_PROPVAL_ON, MAX_STATE_LEN);
        else if (lom_get_led.status == LOM_LED_STATUS_FLASHING)
                (void) strlcpy(result, PICL_PROPVAL_FLASHING, MAX_STATE_LEN);
        else if (lom_get_led.status == LOM_LED_STATUS_BLINKING)
                (void) strlcpy(result, PICL_PROPVAL_BLINKING, MAX_STATE_LEN);
        else
                (void) strlcpy(result, PICL_PROPVAL_OFF, MAX_STATE_LEN);
        (void) close(ledfd);
        return (PICL_SUCCESS);
}

static int
get_led_data(ptree_rarg_t *arg, void *result)
{
        int rc;                         /* return code */
        char    name[PICL_PROPNAMELEN_MAX];
        char *ptr;

        rc = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, name,
            sizeof (name));
        if (rc != PICL_SUCCESS)
                return (rc);

        ptr = strchr(name, '_');
        *ptr++ = '\0'; /* now name is fru name, ptr is led name */
        return (get_led(name, ptr, (char *)result));
}

static int
set_led(char *name, char *ptr, char *value)
{
        int ledfd;
        lom_set_led_t lom_set_led;

        /*
         * Open the lw8 pseudo dev to set the led information
         */
        if ((ledfd = open(LED_PSEUDO_DEV, O_RDWR, 0)) == -1) {
                syslog(LOG_ERR, DEV_OPEN_FAIL, LED_PSEUDO_DEV, strerror(errno));
                return (PICL_FAILURE);
        }
        bzero(&lom_set_led, sizeof (lom_set_led));
        (void) strlcpy(lom_set_led.location, name,
            sizeof (lom_set_led.location));
        (void) strlcpy(lom_set_led.id, ptr, sizeof (lom_set_led.id));
        if (strcmp(value, PICL_PROPVAL_ON) == 0) {
                lom_set_led.status = LOM_LED_STATUS_ON;
        } else if (strcmp(value, PICL_PROPVAL_FLASHING) == 0) {
                lom_set_led.status = LOM_LED_STATUS_FLASHING;
        } else if (strcmp(value, PICL_PROPVAL_BLINKING) == 0) {
                lom_set_led.status = LOM_LED_STATUS_BLINKING;
        } else {
                lom_set_led.status = LOM_LED_STATUS_OFF;
        }
        if (ioctl(ledfd, LOMIOCSETLED, &lom_set_led) == -1) {
                (void) close(ledfd);
                syslog(LOG_ERR, LED_IOCTL_FAIL, strerror(errno));
                return (PICL_PROPVALUNAVAILABLE);
        }
        (void) close(ledfd);
        return (PICL_SUCCESS);
}

static int
set_led_data(ptree_warg_t *arg, const void *value)
{
        int rc;                         /* return code */
        char    name[PICL_PROPNAMELEN_MAX];
        char *ptr;

        rc = ptree_get_propval_by_name(arg->nodeh, PICL_PROP_NAME, name,
            sizeof (name));
        if (rc != PICL_SUCCESS)
                return (rc);

        ptr = strchr(name, '_');
        *ptr++ = '\0'; /* now name is fru name, ptr is led name */
        return (set_led(name, ptr, (char *)value));
}

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;
                }
        }

        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(err));
                        return;
                }
                g_wait_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(err));
                        return;
                }
                ledsthr_created = B_TRUE;
        }
        for (i = 0; i < N_DISKS; i++) {
                (void) set_led(lw8_disks[i].d_fruname, FAULT_LED,
                    PICL_PROPVAL_OFF);
        }
}

static void
disk_leds_fini(void)
{
        int     err;

        /*
         * 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(err));
                return;
        }
        g_wait_now = B_TRUE;
        disk_leds_thread_ack = B_FALSE;
        (void) pthread_cond_broadcast(&g_cv);

        /*
         * and wait for the led thread 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(struct lw8_disk *diskp)
{
        picl_nodehdl_t slotndh;
        picl_nodehdl_t diskndh;
        picl_nodehdl_t devhdl;
        picl_prophdl_t  tblhdl;
        int err;
        char path[MAXPATHLEN];
        char *fruname = diskp->d_fruname;

        sprintf_buf2(path, CHASSIS_LOC_PATH, fruname);
        if (ptree_get_node_by_path(path, &slotndh) != PICL_SUCCESS) {
                return;
        }
        diskndh = find_child_by_name(slotndh, fruname);
        err = ptree_get_node_by_path(diskp->d_plat_path, &devhdl);
        if (err == PICL_SUCCESS) {
                if (diskndh != NULL)
                        return;
                err = ptree_create_and_add_node(slotndh, fruname,
                    PICL_CLASS_FRU, &diskndh);
                if (err != PICL_SUCCESS) {
                        syslog(LOG_ERR, ADD_NODE_FAIL, fruname, err);
                        return;
                }
                err = create_table(diskndh, &tblhdl, PICL_PROP_DEVICES);
                if (err != PICL_SUCCESS)
                        return;
                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 {
                if (diskndh == NULL)
                        return;
                err = ptree_delete_node(diskndh);
                if (err != PICL_SUCCESS)
                        return;
                (void) ptree_destroy_node(diskndh);
        }
}

/*
 * Implement a state machine in order to:
 *
 *  o enable/disable disk LEDs
 *  o add/delete the disk's node in the FRU tree
 *
 * The machine changes state based on the current, in-memory
 * state of the disk (eg, the d_state field of 'struct lw8_disk')
 * and libdevice's current view of whether the disk is
 * Configured or Unconfigured.
 *
 * If the new state is the same as the previous state, then
 * no side effects occur.  Otherwise, the LEDs for the
 * disk are set and the disk's associated node in the
 * FRU Tree is added or deleted.
 */
static void
set_disk_leds(struct lw8_disk *disk)
{
        devctl_hdl_t    dhdl;
        uint_t          cur_state = 0;

        dhdl = devctl_device_acquire(disk->d_devices_path, 0);
        if (dhdl == NULL) {
                int err = errno;
                syslog(LOG_ERR, DEVCTL_DEVICE_ACQUIRE_FAILED,
                    strerror(err));
                return;
        }
        devctl_device_getstate(dhdl, &cur_state);
        devctl_release(dhdl);

        if ((cur_state & DEVICE_OFFLINE) != 0) {
                switch (disk->d_state) {
                default:
                        /*
                         * State machine should never get here.
                         * When NDEBUG is defined, control will
                         * fall through and force d_state to
                         * match the semantics of "DEVICE_OFFLINE".
                         * During development, NDEBUG can be undefined,
                         * and this will fire an assertion.
                         */
                        assert(0);
                        /*FALLTHROUGH*/

                case DISK_STATE_NOT_INIT:
                case DISK_STATE_READY:
                        disk->d_state = DISK_STATE_NOT_READY;

                        (void) set_led(disk->d_fruname, POWER_LED,
                            PICL_PROPVAL_OFF);
                        (void) set_led(disk->d_fruname, REMOK_LED,
                            PICL_PROPVAL_ON);

                        update_disk_node(disk);
                        break;

                case DISK_STATE_NOT_READY:
                        break;
                }
        } else if ((cur_state & DEVICE_ONLINE) != 0) {
                switch (disk->d_state) {
                default:
                        /*
                         * State machine should never get here.
                         * When NDEBUG is defined, control will
                         * fall through and force d_state to
                         * match the semantics of "DEVICE_ONLINE".
                         * During development, NDEBUG can be undefined,
                         * and this will fire an assertion.
                         */
                        assert(0);
                        /*FALLTHROUGH*/

                case DISK_STATE_NOT_INIT:
                case DISK_STATE_NOT_READY:
                        disk->d_state = DISK_STATE_READY;

                        (void) set_led(disk->d_fruname, REMOK_LED,
                            PICL_PROPVAL_OFF);
                        (void) set_led(disk->d_fruname, POWER_LED,
                            PICL_PROPVAL_ON);

                        update_disk_node(disk);
                        break;

                case DISK_STATE_READY:
                        break;
                }
        }
}

/*
 * NOTE: this implementation of disk_leds_thread is based on the version in
 * plugins/sun4u/mpxu/frudr/piclfrudr.c (with V440 raid support removed). Some
 * day the source code layout and build environment should support common code
 * used by platform specific plugins, in which case LW8 support could be added
 * to the mpxu version (which would be moved to a common directory).
 */
/*ARGSUSED*/
static void *
disk_leds_thread(void *args)
{
        int     i;
        int     err = 0;
        int     n_disks = N_DISKS;

        static char *lw8_pci_devs[] = {
                DISK0_BASE_PATH,
                DISK1_BASE_PATH
        };

        static char *lw8_pcix_devs[] = {
                DISK0_BASE_PATH_PCIX,
                DISK1_BASE_PATH_PCIX
        };

        static char **lw8_devs;

        if (pcix_io) {
                lw8_devs = lw8_pcix_devs;
        } else {
                lw8_devs = lw8_pci_devs;
        }

        /*
         * create aliases for disk names
         */
        for (i = 0; i < n_disks; i++) {
                char buffer[MAXPATHLEN];

                (void) snprintf(buffer, sizeof (buffer), "/devices%s",
                    lw8_devs[i]);
                lw8_disks[i].d_devices_path = strdup(buffer);

                (void) snprintf(buffer, sizeof (buffer), "/platform%s",
                    lw8_devs[i]);
                lw8_disks[i].d_plat_path = strdup(buffer);
        }

        for (;;) {
                for (i = 0; i < n_disks; i++) {
                        set_disk_leds(&lw8_disks[i]);
                }

                /*
                 * wait a bit until we check again
                 */
                err = poll(NULL, 0, ledsthr_poll_period);
                if (err == -1) {
                        err = errno;
                        syslog(LOG_ERR, EM_POLL_FAIL, strerror(err));
                        break;
                }
                err = pthread_mutex_lock(&g_mutex);
                if (err != 0) {
                        syslog(LOG_ERR, EM_MUTEX_FAIL, strerror(err));
                        break;
                }
                if (g_wait_now != B_FALSE) {
                        /* 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 */
                        while (g_wait_now != B_FALSE)
                                (void) pthread_cond_wait(&g_cv, &g_mutex);
                }
                (void) pthread_mutex_unlock(&g_mutex);
        }
        return ((void *)err);
}