ip17x_phy.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2013 Luiz Otavio O Souza.
    5  * Copyright (c) 2011-2012 Stefan Bethke.
    6  * Copyright (c) 2012 Adrian Chadd.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD$
   31  */
   32 
   33 #include <sys/param.h>
   34 #include <sys/bus.h>
   35 #include <sys/errno.h>
   36 #include <sys/kernel.h>
   37 #include <sys/lock.h>
   38 #include <sys/mutex.h>
   39 #include <sys/systm.h>
   40 #include <sys/socket.h>
   41 
   42 #include <net/if.h>
   43 
   44 #include <dev/mii/mii.h>
   45 
   46 #include <dev/etherswitch/etherswitch.h>
   47 #include <dev/etherswitch/ip17x/ip17x_phy.h>
   48 #include <dev/etherswitch/ip17x/ip17x_reg.h>
   49 #include <dev/etherswitch/ip17x/ip17x_var.h>
   50 
   51 #include "mdio_if.h"
   52 #include "miibus_if.h"
   53 #include "etherswitch_if.h"
   54 
   55 int
   56 ip17x_readphy(device_t dev, int phy, int reg)
   57 {
   58         struct ip17x_softc *sc;
   59         int data;
   60 
   61         sc = device_get_softc(dev);
   62         IP17X_LOCK_ASSERT(sc, MA_NOTOWNED);
   63 
   64         if (phy < 0 || phy >= 32)
   65                 return (ENXIO);
   66         if (reg < 0 || reg >= 32)
   67                 return (ENXIO);
   68 
   69         IP17X_LOCK(sc);
   70         data = MDIO_READREG(device_get_parent(dev), phy, reg);
   71         IP17X_UNLOCK(sc);
   72 
   73         return (data);
   74 }
   75 
   76 int
   77 ip17x_writephy(device_t dev, int phy, int reg, int data)
   78 {
   79         struct ip17x_softc *sc;
   80         int err;
   81 
   82         sc = device_get_softc(dev);
   83         IP17X_LOCK_ASSERT(sc, MA_NOTOWNED);
   84 
   85         if (phy < 0 || phy >= 32)
   86                 return (ENXIO);
   87         if (reg < 0 || reg >= 32)
   88                 return (ENXIO);
   89 
   90         IP17X_LOCK(sc);
   91         err = MDIO_WRITEREG(device_get_parent(dev), phy, reg, data);
   92         IP17X_UNLOCK(sc);
   93 
   94         return (err);
   95 }
   96 
   97 int
   98 ip17x_updatephy(device_t dev, int phy, int reg, int mask, int value)
   99 {
  100         int val;
  101 
  102         val = ip17x_readphy(dev, phy, reg);
  103         val &= ~mask;
  104         val |= value;
  105         return (ip17x_writephy(dev, phy, reg, val));
  106 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/etherswitch/ip17x/ip17x_phy.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/etherswitch/ip17x/ip17x_phy.c