libtopo/common/topo_builtin.c

	topo_builtin.c revision 9dd0f810214fdc8e1af881a9a5c4b6927629ff9e
/*
 * 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"

#include <pthread.h>

#include <topo_module.h>
#include <topo_string.h>
#include <topo_builtin.h>
#include <topo_error.h>
#include <topo_subr.h>

#include <cpu.h>
#include <hc.h>
#include <dev.h>
#include <mem.h>
#include <mod.h>
#include <pkg.h>

static const struct topo_builtin _topo_builtins[] = {
    { "cpu", CPU_VERSION, cpu_init, cpu_fini },
    { "dev", DEV_VERSION, dev_init, dev_fini },
    { "mem", MEM_VERSION, mem_init, mem_fini },
    { "pkg", PKG_VERSION, pkg_init, pkg_fini },
    { "mod", MOD_VERSION, mod_init, mod_fini },
    { "hc", HC_VERSION, hc_init, hc_fini },     /* hc must go last */
    { NULL, 0, NULL, NULL }
};

static int
bltin_init(topo_mod_t *mp, topo_version_t version)
{
    const topo_builtin_t *bp;

    for (bp = _topo_builtins; bp->bltin_name != NULL; bp++) {
        if (strcmp(mp->tm_name, bp->bltin_name) == 0)
            break;
    }

    mp->tm_data = (void *)bp;

    if ((*bp->bltin_init)(mp, version) != 0 || mp->tm_info == NULL) {
        if (mp->tm_errno == 0)
            (void) topo_mod_seterrno(mp, ETOPO_MOD_INIT);
        topo_dprintf(mp->tm_hdl, TOPO_DBG_ERR,
            "unable initialize builtin module: %s: %s\n",
            bp->bltin_name, topo_mod_errmsg(mp));
        return (-1);
    }

    return (0);
}

static int
bltin_fini(topo_mod_t *mp)
{
    topo_builtin_t *bp = mp->tm_data;

    if (mp->tm_info != NULL) {
        (*bp->bltin_fini)(mp);

    }

    return (0);
}

const topo_imodops_t topo_bltin_ops = {
    bltin_init,
    bltin_fini,
};

/*ARGSUSED*/
int
topo_builtin_create(topo_hdl_t *thp, const char *rootdir)
{
    const topo_builtin_t *bp;
    topo_mod_t *mod;
    ttree_t *tp;
    tnode_t *rnode;

    /*
     * Create a scheme-specific topo tree for all builtins
     */
    for (bp = _topo_builtins; bp->bltin_name != NULL; bp++) {

        /*
         * Load scheme-specific module
         */
        if ((mod = topo_modhash_load(thp, bp->bltin_name, NULL,
            &topo_bltin_ops, bp->bltin_version)) == NULL) {
            topo_dprintf(thp, TOPO_DBG_ERR,
                "unable to create scheme "
                "tree for %s:%s\n", bp->bltin_name,
                topo_hdl_errmsg(thp));
            return (-1);
        }
        if ((tp = topo_tree_create(thp, mod, bp->bltin_name))
            == NULL) {
            topo_dprintf(thp, TOPO_DBG_ERR,
                "unable to create scheme "
                "tree for %s:%s\n", bp->bltin_name,
                topo_hdl_errmsg(thp));
            return (-1);
        }
        topo_list_append(&thp->th_trees, tp);

        /*
         * Call the enumerator on the root of the tree, with the
         * scheme name as the name to enumerate.  This will
         * establish methods on the root node.
         */
        rnode = tp->tt_root;
        if (topo_mod_enumerate(mod, rnode, mod->tm_name, rnode->tn_name,
            rnode->tn_instance, rnode->tn_instance, NULL) < 0) {
            /*
             * If we see a failure, note it in the handle and
             * drive on
             */
            (void) topo_hdl_seterrno(thp, ETOPO_ENUM_PARTIAL);
        }

    }

    return (0);
}