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      1 /*	$NetBSD: mii_bitbang.h,v 1.7 2019/01/22 03:42:27 msaitoh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #define	MII_BIT_MDO		0	/* data out (host->PHY) */
     34 #define	MII_BIT_MDI		1	/* data in (PHY->host) */
     35 #define	MII_BIT_MDC		2	/* clock */
     36 #define	MII_BIT_DIR_HOST_PHY	3	/* set direction: host->PHY */
     37 #define	MII_BIT_DIR_PHY_HOST	4	/* set direction: PHY->host */
     38 #define	MII_NBITS		5
     39 
     40 struct mii_bitbang_ops {
     41 	uint32_t	(*mbo_read)(device_t);
     42 	void		(*mbo_write)(device_t, uint32_t);
     43 	uint32_t	mbo_bits[MII_NBITS];
     44 };
     45 
     46 typedef	const struct mii_bitbang_ops *mii_bitbang_ops_t;
     47 
     48 int	mii_bitbang_readreg(device_t, mii_bitbang_ops_t, int, int, uint16_t *);
     49 int	mii_bitbang_writereg(device_t, mii_bitbang_ops_t, int, int, uint16_t);
     50