libipmi/common/libipmi.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 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <libipmi.h>
#include <string.h>

#include "ipmi_impl.h"

ipmi_handle_t *
ipmi_open(int *errp, char **msg, uint_t xport_type, nvlist_t *params)
{
    ipmi_handle_t *ihp;
    static char errmsg[48];

    if (msg)
        *msg = NULL;

    if ((ihp = calloc(sizeof (ipmi_handle_t), 1)) == NULL) {
        *errp = EIPMI_NOMEM;
        if (msg)
            *msg = "memory allocation failure";
        return (NULL);
    }

    switch (xport_type) {
    case IPMI_TRANSPORT_BMC:
        ihp->ih_transport = &ipmi_transport_bmc;
        break;
    case IPMI_TRANSPORT_LAN:
        ihp->ih_transport = &ipmi_transport_lan;
        break;
    default:
        *msg = "invalid transport type specified";
        return (NULL);
    }

    ihp->ih_retries = 3;

    if ((ihp->ih_tdata = ihp->ih_transport->it_open(ihp, params)) == NULL ||
        ipmi_sdr_init(ihp) != 0 || ipmi_entity_init(ihp) != 0) {
        *errp = ihp->ih_errno;
        if (msg) {
            (void) strncpy(errmsg, ipmi_errmsg(ihp), 47);
            errmsg[47] = '\0';
            *msg = errmsg;
        }
        ipmi_close(ihp);
        return (NULL);
    }

    return (ihp);
}

void
ipmi_close(ipmi_handle_t *ihp)
{
    if (ihp->ih_transport && ihp->ih_tdata)
        ihp->ih_transport->it_close(ihp->ih_tdata);
    ipmi_free(ihp, ihp->ih_deviceid);
    ipmi_free(ihp, ihp->ih_firmware_rev);
    ipmi_user_clear(ihp);
    ipmi_sdr_fini(ihp);
    ipmi_entity_fini(ihp);
    free(ihp);
}

/*
 * See section 5.2 for a description of the completion codes.
 */
static struct ipmi_err_conv {
    int bmc_err;
    int ipmi_err;
} ipmi_errtable[] = {
    { 0xC0,         EIPMI_BUSY },
    { 0xC1,         EIPMI_INVALID_COMMAND },
    { 0xC2,         EIPMI_INVALID_COMMAND },
    { 0xC3,         EIPMI_COMMAND_TIMEOUT },
    { 0xC4,         EIPMI_NOSPACE },
    { 0xC5,         EIPMI_INVALID_RESERVATION },
    { 0xC6,         EIPMI_INVALID_REQUEST },
    { 0xC7,         EIPMI_INVALID_REQUEST },
    { 0xC8,         EIPMI_INVALID_REQUEST },
    { 0xC9,         EIPMI_INVALID_REQUEST },
    { 0xCA,         EIPMI_DATA_LENGTH_EXCEEDED },
    { 0xCB,         EIPMI_NOT_PRESENT },
    { 0xCC,         EIPMI_INVALID_REQUEST },
    { 0xCD,         EIPMI_INVALID_COMMAND },
    { 0xCE,         EIPMI_UNAVAILABLE },
    { 0xCF,         EIPMI_UNAVAILABLE },
    { 0xD0,         EIPMI_BUSY },
    { 0xD1,         EIPMI_BUSY },
    { 0xD2,         EIPMI_BUSY },
    { 0xD3,         EIPMI_NOT_PRESENT },
    { 0xD4,         EIPMI_ACCESS },
    { 0xD5,         EIPMI_UNAVAILABLE },
    { 0xD6,         EIPMI_UNAVAILABLE },
    { 0xFF,         EIPMI_UNSPECIFIED },
};

#define IPMI_ERROR_COUNT \
    (sizeof (ipmi_errtable) / sizeof (ipmi_errtable[0]))

ipmi_cmd_t *
ipmi_send(ipmi_handle_t *ihp, ipmi_cmd_t *cmd)
{
    int i;

    if (ihp->ih_transport->it_send(ihp->ih_tdata, cmd, &ihp->ih_response,
        &ihp->ih_completion) != 0)
        return (NULL);

    if (ihp->ih_completion != 0) {
        for (i = 0; i < IPMI_ERROR_COUNT; i++) {
            if (ihp->ih_completion == ipmi_errtable[i].bmc_err) {
                (void) ipmi_set_error(ihp,
                    ipmi_errtable[i].ipmi_err,
                    "IPMI completion code 0x%x",
                    ihp->ih_completion);
                return (NULL);
            }
        }

        (void) ipmi_set_error(ihp, EIPMI_UNKNOWN,
            "IPMI completion code 0x%x", ihp->ih_completion);
        return (NULL);
    }

    return (&ihp->ih_response);
}