/*      $NetBSD: mii_bitbang.h,v 1.7 2019/01/22 03:42:27 msaitoh Exp $  */

/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#define MII_BIT_MDO             0       /* data out (host->PHY) */
#define MII_BIT_MDI             1       /* data in (PHY->host) */
#define MII_BIT_MDC             2       /* clock */
#define MII_BIT_DIR_HOST_PHY    3       /* set direction: host->PHY */
#define MII_BIT_DIR_PHY_HOST    4       /* set direction: PHY->host */
#define MII_NBITS               5

struct mii_bitbang_ops {
       uint32_t        (*mbo_read)(device_t);
       void            (*mbo_write)(device_t, uint32_t);
       uint32_t        mbo_bits[MII_NBITS];
};

typedef const struct mii_bitbang_ops *mii_bitbang_ops_t;

int     mii_bitbang_readreg(device_t, mii_bitbang_ops_t, int, int, uint16_t *);
int     mii_bitbang_writereg(device_t, mii_bitbang_ops_t, int, int, uint16_t);