sun4v/chip/chip_sun4v.c

	chip_sun4v.c revision 13faa91230bde46da937bf33010b9accc5bdeb59
/*
 * 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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/types.h>
#include <fm/topo_mod.h>
#include <sys/fm/protocol.h>

#include <unistd.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <umem.h>

#include <cpu_mdesc.h>


/*
 * Enumerates the processing chips, or sockets, (as distinct from cores) in a
 * system.  For each chip found, the necessary nodes (one or more cores, and
 * possibly a memory controller) are constructed underneath.
 */

#define CHIP_VERSION    TOPO_VERSION
#define CPU_NODE_NAME   "cpu"
#define CHIP_NODE_NAME  "chip"

/* Forward declaration */
static int chip_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t,
    topo_instance_t, void *, void *);
static void chip_release(topo_mod_t *, tnode_t *);


static const topo_modops_t chip_ops =
    { chip_enum, chip_release };
static const topo_modinfo_t chip_info =
    { "chip", FM_FMRI_SCHEME_HC, CHIP_VERSION, &chip_ops };


static const topo_pgroup_info_t chip_auth_pgroup = {
    FM_FMRI_AUTHORITY,
    TOPO_STABILITY_PRIVATE,
    TOPO_STABILITY_PRIVATE,
    1
};

int
_topo_init(topo_mod_t *mod)
{
    md_info_t *chip;

    if (getenv("TOPOCHIPDBG"))
        topo_mod_setdebug(mod);
    topo_mod_dprintf(mod, "initializing chip enumerator\n");

    if ((chip = topo_mod_zalloc(mod, sizeof (md_info_t))) == NULL)
        return (-1);

    if (cpu_mdesc_init(mod, chip) != 0) {
        topo_mod_dprintf(mod, "failed to get cpus from the PRI/MD\n");
        topo_mod_free(mod, chip, sizeof (md_info_t));
        return (-1);
    }

    topo_mod_setspecific(mod, (void *)chip);

    if (topo_mod_register(mod, &chip_info, TOPO_VERSION) != 0) {
        topo_mod_dprintf(mod, "failed to register hc: "
            "%s\n", topo_mod_errmsg(mod));
        cpu_mdesc_fini(mod, chip);
        topo_mod_free(mod, chip, sizeof (md_info_t));
        return (-1);
    }

    topo_mod_dprintf(mod, "chip enumerator inited\n");

    return (0);
}

void
_topo_fini(topo_mod_t *mod)
{
    md_info_t *chip;

    chip = (md_info_t *)topo_mod_getspecific(mod);

    cpu_mdesc_fini(mod, chip);

    topo_mod_free(mod, chip, sizeof (md_info_t));

    topo_mod_unregister(mod);
}

static tnode_t *
chip_tnode_create(topo_mod_t *mod, tnode_t *parent,
    const char *name, topo_instance_t i, char *serial,
    nvlist_t *fru, char *label, void *priv)
{
    int err;
    nvlist_t *fmri;
    tnode_t *ntn;
    char *prod = NULL, *csn = NULL, *server = NULL;
    nvlist_t *auth = NULL;

    if (topo_mod_nvalloc(mod, &auth, NV_UNIQUE_NAME) == 0) {
        if (topo_prop_get_string(parent, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_PRODUCT, &prod, &err) == 0) {
            (void) nvlist_add_string(auth, FM_FMRI_AUTH_PRODUCT,
                prod);
            topo_mod_strfree(mod, prod);
        }
        if (topo_prop_get_string(parent, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_SERVER, &server, &err) == 0) {
            (void) nvlist_add_string(auth, FM_FMRI_AUTH_SERVER,
                server);
            topo_mod_strfree(mod, server);
        }
        if (topo_prop_get_string(parent, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_CHASSIS, &csn, &err) == 0) {
            (void) nvlist_add_string(auth, FM_FMRI_AUTH_CHASSIS,
                csn);
            topo_mod_strfree(mod, csn);
        }
    }


    fmri = topo_mod_hcfmri(mod, parent, FM_HC_SCHEME_VERSION, name, i,
        NULL, auth, NULL, NULL, serial);
    nvlist_free(auth);
    if (fmri == NULL) {
        topo_mod_dprintf(mod,
            "Unable to make nvlist for %s bind: %s.\n",
            name, topo_mod_errmsg(mod));
        return (NULL);
    }

    ntn = topo_node_bind(mod, parent, name, i, fmri);
    if (ntn == NULL) {
        topo_mod_dprintf(mod,
            "topo_node_bind (%s%d/%s%d) failed: %s\n",
            topo_node_name(parent), topo_node_instance(parent),
            name, i,
            topo_strerror(topo_mod_errno(mod)));
        nvlist_free(fmri);
        return (NULL);
    }
    nvlist_free(fmri);
    topo_node_setspecific(ntn, priv);

    if (topo_pgroup_create(ntn, &chip_auth_pgroup, &err) == 0) {
        (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_PRODUCT, &err);
        (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_CHASSIS, &err);
        (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY,
            FM_FMRI_AUTH_SERVER, &err);
    }

    /* Inherit the Label FRU fields from the parent */
    (void) topo_node_label_set(ntn, label, &err);
    (void) topo_node_fru_set(ntn, fru, 0, &err);

    return (ntn);
}

static nvlist_t *
cpu_fmri_create(topo_mod_t *mod, uint32_t cpuid, char *serial, uint8_t cpumask)
{
    int err;
    nvlist_t *fmri;

    if (topo_mod_nvalloc(mod, &fmri, NV_UNIQUE_NAME) != 0)
        return (NULL);
    err = nvlist_add_uint8(fmri, FM_VERSION, FM_CPU_SCHEME_VERSION);
    err |= nvlist_add_string(fmri, FM_FMRI_SCHEME, FM_FMRI_SCHEME_CPU);
    err |= nvlist_add_uint32(fmri, FM_FMRI_CPU_ID, cpuid);
    err |= nvlist_add_uint8(fmri, FM_FMRI_CPU_MASK, cpumask);
    if (serial != NULL)
        err |= nvlist_add_string(fmri, FM_FMRI_CPU_SERIAL_ID, serial);
    if (err != 0) {
        nvlist_free(fmri);
        (void) topo_mod_seterrno(mod, EMOD_FMRI_NVL);
        return (NULL);
    }

    return (fmri);
}

/*ARGSUSED*/
static int
cpu_create(topo_mod_t *mod, tnode_t *rnode, const char *name, md_info_t *chip,
    uint64_t serial)
{
    int i;
    int min = -1;
    int max = -1;
    int err;
    int nerr = 0;
    int pid;
    char sbuf[32];
    tnode_t *cnode;
    nvlist_t *asru;
    md_cpumap_t *mcmp;

    topo_mod_dprintf(mod, "enumerating cpus\n");

    /*
     * find the min/max id of cpus per this cmp and create a cpu range
     */
    for (i = 0, mcmp = chip->cpus; i < chip->ncpus; i++, mcmp++) {
        if (mcmp->cpumap_serialno != serial)
            continue;
        if ((min < 0) || (mcmp->cpumap_pid < min))
            min = mcmp->cpumap_pid;
        if ((max < 0) || (mcmp->cpumap_pid > max))
            max = mcmp->cpumap_pid;
    }
    if (min < 0 || max < 0) {
        topo_mod_dprintf(mod, "Invalid cpu range(%d,%d)\n", min, max);
        return (-1);
    }
    if (topo_node_range_create(mod, rnode, name, 0, max+1) < 0) {
        topo_mod_dprintf(mod, "failed to create cpu range[0,%d]: %s\n",
            max, topo_mod_errmsg(mod));
        return (-1);
    }

    (void) snprintf(sbuf, sizeof (sbuf), "%llx", serial);

    /*
     * Create the cpu[i] nodes of a given cmp i
     */
    for (i = 0, mcmp = chip->cpus; i < chip->ncpus; i++, mcmp++) {

        if (mcmp->cpumap_serialno == 0 ||
            mcmp->cpumap_serialno != serial) {
            continue;
        }

        /* physical cpuid */
        pid = mcmp->cpumap_pid;
        cnode = chip_tnode_create(mod, rnode, name,
            (topo_instance_t)pid, sbuf, NULL, NULL, NULL);
        if (cnode == NULL) {
            topo_mod_dprintf(mod,
                "failed to create a cpu=%d node: %s\n",
                pid, topo_mod_errmsg(mod));
            nerr++;
            continue;
        }

        if ((asru = cpu_fmri_create(mod, pid, sbuf, 0)) != NULL) {
            (void) topo_node_asru_set(cnode, asru, 0, &err);
            nvlist_free(asru);
        } else {
            nerr++;
        }
    }

    if (nerr != 0)
        (void) topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM);

    return (0);
}

/*ARGSUSED*/
static int
chip_create(topo_mod_t *mod, tnode_t *rnode, const char *name,
    topo_instance_t min, topo_instance_t max, md_info_t *chip)
{
    int nerr = 0;
    int err;
    int i;
    char sbuf[32];
    tnode_t *cnode;
    nvlist_t *fru = NULL;
    char *label = NULL;
    md_proc_t *procp;

    topo_mod_dprintf(mod, "enumerating cmp chip\n");
    if (min < 0 || max < 0 || min > max) {
        topo_mod_dprintf(mod, "Invalid chip range(%d,%d)\n", min, max);
        return (-1);
    }

    /*
     * Create the chip[i] nodes, one for each CMP chip uniquely identified
     * by the serial number.
     */
    for (i = min; i <= max; i++) {

        /* Skip the processors with no serial number */
        if ((procp = cpu_find_proc(chip, i)) == NULL) {
            continue;
        }
        if (procp->serialno == 0) {
            continue;
        }

        (void) snprintf(sbuf, sizeof (sbuf), "%llx", procp->serialno);
        topo_mod_dprintf(mod, "node chip[%d], sn=%s\n", i, sbuf);

        cnode = chip_tnode_create(mod, rnode, name, (topo_instance_t)i,
            sbuf, fru, label, NULL);
        if (cnode == NULL) {
            topo_mod_dprintf(mod, "failed to create a chip node: "
                "%s\n", topo_mod_errmsg(mod));
            nerr++;
            continue;
        }

        /* Enumerate all cpu strands of this CMP chip */
        err = cpu_create(mod, cnode, CPU_NODE_NAME, chip,
            procp->serialno);
        if (err != 0) {
            nerr++;
        }
    }

    if (nerr != 0)
        (void) topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM);

    return (0);
}

/*ARGSUSED*/
static int
chip_enum(topo_mod_t *mod, tnode_t *rnode, const char *name,
    topo_instance_t min, topo_instance_t max, void *arg, void *notused)
{
    md_info_t *chip = (md_info_t *)arg;

    if (strcmp(name, CHIP_NODE_NAME) == 0)
        return (chip_create(mod, rnode, name, min, max, chip));

    return (0);
}

/*ARGSUSED*/
static void
chip_release(topo_mod_t *mp, tnode_t *node)
{
}