ethernet-util.h

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/**********************************************************************
 * Author: Cavium Networks
 *
 * Contact: support@caviumnetworks.com
 * This file is part of the OCTEON SDK
 *
 * Copyright (c) 2003-2007 Cavium Networks
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, Version 2, as
 * published by the Free Software Foundation.
 *
 * This file is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * or visit http://www.gnu.org/licenses/.
 *
 * This file may also be available under a different license from Cavium.
 * Contact Cavium Networks for more information
*********************************************************************/

static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
{
    return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
                << 7);
}

static inline int INTERFACE(int ipd_port)
{
    if (ipd_port < 32)  /* Interface 0 or 1 for RGMII,GMII,SPI, etc */
        return ipd_port >> 4;
    else if (ipd_port < 36) /* Interface 2 for NPI */
        return 2;
    else if (ipd_port < 40) /* Interface 3 for loopback */
        return 3;
    else if (ipd_port == 40)    /* Non existent interface for POW0 */
        return 4;
    else
        panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
}

static inline int INDEX(int ipd_port)
{
    if (ipd_port < 32)
        return ipd_port & 15;
    else
        return ipd_port & 3;
}