i86pc/hostbridge/hb_i86pc.c

	hb_i86pc.c revision 7aec1d6e253b21f9e9b7ef68b4d81ab9859b51fe
/*
 * 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 <fm/topo_mod.h>
#include <libdevinfo.h>
#include "pcibus.h"
#include "hostbridge.h"
#include "did.h"
#include "util.h"

extern did_hash_t *Didhash;

static int
hb_process(tnode_t *ptn, topo_instance_t hbi, di_node_t bn)
{
    tnode_t *hb;

    if (did_create(Didhash, bn, 0, hbi, NO_RC, TRUST_BDF) == NULL)
        return (-1);
    if ((hb = pcihostbridge_declare(ptn, bn, hbi)) == NULL)
        return (-1);
    return (topo_mod_enumerate(HbHdl,
        hb, PCI_BUS, PCI_BUS, 0, MAX_HB_BUSES));
}

static int
rc_process(tnode_t *ptn, topo_instance_t hbi, di_node_t bn)
{
    tnode_t *hb;
    tnode_t *rc;

    if (did_create(Didhash, bn, 0, hbi, hbi, TRUST_BDF) == NULL)
        return (-1);
    if ((hb = pciexhostbridge_declare(ptn, bn, hbi)) == NULL)
        return (-1);
    if ((rc = pciexrc_declare(hb, bn, hbi)) == NULL)
        return (-1);
    return (topo_mod_enumerate(HbHdl,
        rc, PCI_BUS, PCIEX_BUS, 0, MAX_HB_BUSES));
}


int
pci_hostbridges_find(tnode_t *ptn)
{
    di_node_t devtree;
    di_node_t pnode;
    char *eplain;
    int hbcnt = 0;

    /* Scan for buses, top-level devinfo nodes with the right driver */
    devtree = di_init("/", DINFOCPYALL);
    if (devtree == DI_NODE_NIL) {
        topo_mod_dprintf(HbHdl, "devinfo init failed.");
        topo_node_range_destroy(ptn, HOSTBRIDGE);
        return (0);
    }

    /*
     * By default we do not enumerate generic PCI on x86
     */
    eplain = getenv("TOPOENUMPLAINPCI");
    if (eplain != NULL) {
        pnode = di_drv_first_node(PCI, devtree);
        while (pnode != DI_NODE_NIL) {
            if (hb_process(ptn, hbcnt++, pnode) < 0) {
                di_fini(devtree);
                topo_node_range_destroy(ptn, HOSTBRIDGE);
                return (topo_mod_seterrno(HbHdl,
                    EMOD_PARTIAL_ENUM));
            }
            pnode = di_drv_next_node(pnode);
        }
    }

    pnode = di_drv_first_node(NPE, devtree);
    while (pnode != DI_NODE_NIL) {
        if (rc_process(ptn, hbcnt++, pnode) < 0) {
            di_fini(devtree);
            topo_node_range_destroy(ptn, HOSTBRIDGE);
            return (topo_mod_seterrno(HbHdl, EMOD_PARTIAL_ENUM));
        }
        pnode = di_drv_next_node(pnode);
    }
    di_fini(devtree);
    return (0);
}

/*ARGSUSED*/
int
platform_hb_enum(tnode_t *parent, const char *name,
    topo_instance_t imin, topo_instance_t imax)
{
    return (pci_hostbridges_find(parent));
}

/*ARGSUSED*/
int
platform_hb_label(tnode_t *node, nvlist_t *in, nvlist_t **out)
{
    return (labelmethod_inherit(HbHdl, node, in, out));
}