modules/genunix/hotplug.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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/mdb_modapi.h>
#include <sys/proc.h>
#include <sys/types.h>
#include <sys/sunddi.h>
#include <sys/ddi_hp.h>
#include "devinfo.h"

static char *
ddihp_get_cn_state(ddi_hp_cn_state_t state)
{
    switch (state) {
    case DDI_HP_CN_STATE_EMPTY:
        return ("Empty");
    case DDI_HP_CN_STATE_PRESENT:
        return ("Present");
    case DDI_HP_CN_STATE_POWERED:
        return ("Powered");
    case DDI_HP_CN_STATE_ENABLED:
        return ("Enabled");
    case DDI_HP_CN_STATE_PORT_EMPTY:
        return ("Port_Empty");
    case DDI_HP_CN_STATE_PORT_PRESENT:
        return ("Port_Present");
    case DDI_HP_CN_STATE_OFFLINE:
        return ("Offline");
    case DDI_HP_CN_STATE_ATTACHED:
        return ("Attached");
    case DDI_HP_CN_STATE_MAINTENANCE:
        return ("Maintenance");
    case DDI_HP_CN_STATE_ONLINE:
        return ("Online");
    default:
        return ("Unknown");
    }
}

/*ARGSUSED*/
static int
hotplug_print(uintptr_t addr, struct dev_info *dev, devinfo_cb_data_t *data)
{
    ddi_hp_cn_handle_t  hdl;
    uintptr_t       hdlp = (uintptr_t)dev->devi_hp_hdlp;
    char            cn_type[15];
    char            cn_name[15];

    while (hdlp) {
        if (mdb_vread(&hdl, sizeof (ddi_hp_cn_handle_t), hdlp) == -1) {
            mdb_warn("Failed to read hdlp!\n");
            return (DCMD_ERR);
        }

        if (!(data->di_flags & DEVINFO_HP_PHYSICAL) ||
            hdl.cn_info.cn_type != DDI_HP_CN_TYPE_VIRTUAL_PORT) {
            if (mdb_readstr(cn_type, sizeof (cn_type),
                (uintptr_t)hdl.cn_info.cn_type_str) == -1) {
                mdb_warn("Failed to read cn_type!\n");
                return (DCMD_ERR);
            }
            if (mdb_readstr(cn_name, sizeof (cn_name),
                (uintptr_t)hdl.cn_info.cn_name) == -1) {
                mdb_warn("Failed to read cn_name!\n");
                return (DCMD_ERR);
            }
            mdb_printf("%?p %?p %-12s %-15s %-15s\n", hdl.cn_dip,
                hdlp, ddihp_get_cn_state(hdl.cn_info.cn_state),
                cn_type, cn_name);
        }
        hdlp = (uintptr_t)hdl.next;
    };

    return (WALK_NEXT);
}

void
hotplug_help(void)
{
    mdb_printf("Switches:\n"
        "  -p   only print the physical hotplug connectors\n");
}

int
hotplug(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
    devinfo_cb_data_t data;
    uintptr_t devinfo_root;     /* Address of root of devinfo tree */
    ddi_hp_cn_handle_t  hdl;
    char            cn_type[15];
    char            cn_name[15];
    int status;

    data.di_flags = 0;
    data.di_filter = NULL;
    if (mdb_getopts(argc, argv,
        'p', MDB_OPT_SETBITS, DEVINFO_HP_PHYSICAL, &data.di_flags, NULL)
        != argc)
        return (DCMD_USAGE);

    if (DCMD_HDRSPEC(flags)) {
        mdb_printf("%<u>%?s %?s %-12s %-15s %-15s%</u>\n",
            "PARENT_DEVINFO", "HANDLE", "STATE", "TYPE", "CN_NAME");
    }

    if ((flags & DCMD_ADDRSPEC) == 0) {
        data.di_flags |= DEVINFO_PARENT | DEVINFO_CHILD;

        if (mdb_readvar(&devinfo_root, "top_devinfo") == -1) {
            mdb_warn("failed to read 'top_devinfo'");
            return (NULL);
        }

        data.di_base = devinfo_root;
        status = mdb_pwalk("devinfo", (mdb_walk_cb_t)hotplug_print,
            &data, devinfo_root);
        if (status == -1) {
            mdb_warn("couldn't walk devinfo tree");
            return (DCMD_ERR);
        }
        return (DCMD_OK);
    }

    if (mdb_vread(&hdl, sizeof (ddi_hp_cn_handle_t), (uintptr_t)addr)
        == -1) {
        mdb_warn("Failed to read hdlp!\n");
        return (DCMD_ERR);
    }
    if (mdb_readstr(cn_type, sizeof (cn_type),
        (uintptr_t)hdl.cn_info.cn_type_str) == -1) {
        mdb_warn("Failed to read cn_type!\n");
        return (DCMD_ERR);
    }
    if (mdb_readstr(cn_name, sizeof (cn_name),
        (uintptr_t)hdl.cn_info.cn_name) == -1) {
        mdb_warn("Failed to read cn_name!\n");
        return (DCMD_ERR);
    }
    mdb_printf("%?p %?p %-12s %-15s %-15s\n", hdl.cn_dip, addr,
        ddihp_get_cn_state(hdl.cn_info.cn_state), cn_type, cn_name);

    return (DCMD_OK);
}