/*-
 * Copyright (c) 2000, 2001 Michael Smith
 * Copyright (c) 2000 BSDi
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/usr.sbin/devinfo/devinfo.c,v 1.7 2007/10/27 13:06:15 jhb Exp $
 */

/*
 * Print information about system device configuration.
 */

#include <sys/types.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "devinfo.h"

int     rflag;
int     vflag;

static void     print_resource(struct devinfo_res *);
static int      print_device_matching_resource(struct devinfo_res *, void *);
static int      print_device_rman_resources(struct devinfo_rman *, void *);
static int      print_device(struct devinfo_dev *, void *);
static int      print_rman_resource(struct devinfo_res *, void *);
static int      print_rman(struct devinfo_rman *, void *);

struct indent_arg
{
        int     indent;
        void    *arg;
};

/*
 * Print a resource.
 */
void
print_resource(struct devinfo_res *res)
{
        struct devinfo_rman     *rman;
        int                     hexmode;

        rman = devinfo_handle_to_rman(res->dr_rman);
        hexmode =  (rman->dm_size > 1000) || (rman->dm_size == 0);
        printf(hexmode ? "0x%lx" : "%lu", res->dr_start);
        if (res->dr_size > 1)
                printf(hexmode ? "-0x%lx" : "-%lu",
                    res->dr_start + res->dr_size - 1);
}

/*
 * Print resource information if this resource matches the
 * given device.
 *
 * If the given indent is 0, return an indicator that a matching
 * resource exists.
 */
int
print_device_matching_resource(struct devinfo_res *res, void *arg)
{
        struct indent_arg       *ia = (struct indent_arg *)arg;
        struct devinfo_dev      *dev = (struct devinfo_dev *)ia->arg;
        int                     i;

        if (devinfo_handle_to_device(res->dr_device) == dev) {
                /* in 'detect' mode, found a match */
                if (ia->indent == 0)
                        return(1);
                for (i = 0; i < ia->indent; i++)
                        printf(" ");
                print_resource(res);
                printf("\n");
        }
        return(0);
}

/*
 * Print resource information for this device and resource manager.
 */
int
print_device_rman_resources(struct devinfo_rman *rman, void *arg)
{
        struct indent_arg       *ia = (struct indent_arg *)arg;
        int                     indent, i;

        indent = ia->indent;

        /* check whether there are any resources matching this device */
        ia->indent = 0;
        if (devinfo_foreach_rman_resource(rman,
            print_device_matching_resource, ia) != 0) {

                /* there are, print header */
                for (i = 0; i < indent; i++)
                        printf(" ");

                if (rman->dm_cpuid >= 0)
                        printf("%s cpu%d:\n", rman->dm_desc, rman->dm_cpuid);
                else
                        printf("%s:\n", rman->dm_desc);

                /* print resources */
                ia->indent = indent + 4;
                devinfo_foreach_rman_resource(rman,
                    print_device_matching_resource, ia);
        }
        ia->indent = indent;
        return(0);
}

/*
 * Print information about a device.
 */
int
print_device(struct devinfo_dev *dev, void *arg)
{
        struct indent_arg       ia;
        int                     i, indent;

        if (vflag > 1 ||
            (vflag && (dev->dd_flags & DIF_ENABLED)) ||
            (dev->dd_name[0] != 0 && dev->dd_state >= DS_INPROGRESS)) {
                indent = (int)(intptr_t)arg;
                for (i = 0; i < indent; i++)
                        printf(" ");
                if (vflag && (dev->dd_flags & DIF_ENABLED) == 0) {
                        if (dev->dd_name[0])
                                printf("%s", dev->dd_name);
                        printf("(disabled)");
                } else {
                        printf("%s", dev->dd_name[0] ? dev->dd_name : "unknown");
                }
                if (vflag && *dev->dd_pnpinfo)
                        printf(" pnpinfo %s", dev->dd_pnpinfo);
                if (vflag && *dev->dd_location)
                        printf(" at %s", dev->dd_location);
                printf("\n");
                if (rflag) {
                        ia.indent = indent + 4;
                        ia.arg = dev;
                        devinfo_foreach_rman(print_device_rman_resources,
                            (void *)&ia);
                }
        }

        return(devinfo_foreach_device_child(dev, print_device,
            (void *)((char *)arg + 2)));
}

/*
 * Print information about a resource under a resource manager.
 */
int
print_rman_resource(struct devinfo_res *res, void *arg __unused)
{
        struct devinfo_dev      *dev;
        
        printf("    ");
        print_resource(res);
        dev = devinfo_handle_to_device(res->dr_device);
        if ((dev != NULL) && (dev->dd_name[0] != 0)) {
                printf(" (%s)", dev->dd_name);
        } else {
                printf(" ----");
        }
        printf("\n");
        return(0);
}

/*
 * Print information about a resource manager.
 */
int
print_rman(struct devinfo_rman *rman, void *arg __unused)
{
        printf("%s:\n", rman->dm_desc);
        devinfo_foreach_rman_resource(rman, print_rman_resource, 0);
        return(0);
}

int
main(int argc, char *argv[]) 
{
        struct devinfo_dev      *root;
        int                     c, uflag;

        uflag = 0;
        while ((c = getopt(argc, argv, "ruv")) != -1) {
                switch(c) {
                case 'r':
                        rflag++;
                        break;
                case 'u':
                        uflag++;
                        break;
                case 'v':
                        vflag++;
                        break;
                default:
                        fprintf(stderr, "%s\n%s\n",
                            "usage: devinfo [-rv]",
                            "       devinfo -u");
                        exit(1);
                }
        }

        if (devinfo_init())
                err(1, "devinfo_init");

        if ((root = devinfo_handle_to_device(DEVINFO_ROOT_DEVICE)) == NULL)
                errx(1, "can't find root device");

        /* print resource usage? */
        if (uflag) {
                devinfo_foreach_rman(print_rman, NULL);
        } else {
                /* print device hierarchy */
                devinfo_foreach_device_child(root, print_device, NULL);
        }
        return(0);
}