FreeBSD/Linux Kernel Cross Reference
sys/dev/etherswitch/arswitch/arswitch_8316.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2011-2012 Stefan Bethke.
      * Copyright (c) 2012 Adrian Chadd.
      * All rights reserved.
      *
      * 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 AUTHOR 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 AUTHOR 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.
     *
     * $FreeBSD$
     */
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/errno.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/socket.h>
    #include <sys/sockio.h>
    #include <sys/sysctl.h>
    #include <sys/systm.h>
    
    #include <net/if.h>
    #include <net/if_arp.h>
    #include <net/ethernet.h>
    #include <net/if_dl.h>
    #include <net/if_media.h>
    #include <net/if_types.h>
    
    #include <machine/bus.h>
    #include <dev/iicbus/iic.h>
    #include <dev/iicbus/iiconf.h>
    #include <dev/iicbus/iicbus.h>
    #include <dev/mii/mii.h>
    #include <dev/mii/miivar.h>
    #include <dev/mdio/mdio.h>
    
    #include <dev/etherswitch/etherswitch.h>
    
    #include <dev/etherswitch/arswitch/arswitchreg.h>
    #include <dev/etherswitch/arswitch/arswitchvar.h>
    #include <dev/etherswitch/arswitch/arswitch_reg.h>
    #include <dev/etherswitch/arswitch/arswitch_8316.h>
    
    #include "mdio_if.h"
    #include "miibus_if.h"
    #include "etherswitch_if.h"
    
    /*
     * AR8316 specific functions
     */
    static int
    ar8316_hw_setup(struct arswitch_softc *sc)
    {
    
            /*
             * Configure the switch mode based on whether:
             *
             * + The switch port is GMII/RGMII;
             * + Port 4 is either connected to the CPU or to the internal switch.
             */
            if (sc->is_rgmii && sc->phy4cpu) {
                    arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
                        AR8X16_MODE_RGMII_PORT4_ISO);
                    device_printf(sc->sc_dev,
                        "%s: MAC port == RGMII, port 4 = dedicated PHY\n",
                        __func__);
            } else if (sc->is_rgmii) {
                    arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
                        AR8X16_MODE_RGMII_PORT4_SWITCH);
                    device_printf(sc->sc_dev,
                        "%s: MAC port == RGMII, port 4 = switch port\n",
                        __func__);
            } else if (sc->is_gmii) {
                    arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
                        AR8X16_MODE_GMII);
                    device_printf(sc->sc_dev, "%s: MAC port == GMII\n", __func__);
            } else {
                    device_printf(sc->sc_dev, "%s: unknown switch PHY config\n",
                        __func__);
                   return (ENXIO);
           }
   
           DELAY(1000);    /* 1ms wait for things to settle */
   
           /*
            * If port 4 is RGMII, force workaround
            */
           if (sc->is_rgmii && sc->phy4cpu) {
                   device_printf(sc->sc_dev,
                       "%s: port 4 RGMII workaround\n",
                       __func__);
   
                   /* work around for phy4 rgmii mode */
                   arswitch_writedbg(sc->sc_dev, 4, 0x12, 0x480c);
                   /* rx delay */
                   arswitch_writedbg(sc->sc_dev, 4, 0x0, 0x824e);
                   /* tx delay */
                   arswitch_writedbg(sc->sc_dev, 4, 0x5, 0x3d47);
                   DELAY(1000);    /* 1ms, again to let things settle */
           }
   
           return (0);
   }
   
   /*
    * Initialise other global values, for the AR8316.
    */
   static int
   ar8316_hw_global_setup(struct arswitch_softc *sc)
   {
   
           ARSWITCH_LOCK(sc);
   
           arswitch_writereg(sc->sc_dev, 0x38, AR8X16_MAGIC);
   
           /* Enable CPU port and disable mirror port. */
           arswitch_writereg(sc->sc_dev, AR8X16_REG_CPU_PORT,
               AR8X16_CPU_PORT_EN | AR8X16_CPU_MIRROR_DIS);
   
           /* Setup TAG priority mapping. */
           arswitch_writereg(sc->sc_dev, AR8X16_REG_TAG_PRIO, 0xfa50);
   
           /*
            * Flood address table misses to all ports, and enable forwarding of
            * broadcasts to the cpu port.
            */
           arswitch_writereg(sc->sc_dev, AR8X16_REG_FLOOD_MASK,
               AR8X16_FLOOD_MASK_BCAST_TO_CPU | 0x003f003f);
   
           /* Enable jumbo frames. */
           arswitch_modifyreg(sc->sc_dev, AR8X16_REG_GLOBAL_CTRL,
               AR8316_GLOBAL_CTRL_MTU_MASK, 9018 + 8 + 2);
   
           /* Setup service TAG. */
           arswitch_modifyreg(sc->sc_dev, AR8X16_REG_SERVICE_TAG,
               AR8X16_SERVICE_TAG_MASK, 0);
   
           ARSWITCH_UNLOCK(sc);
           return (0);
   }
   
   void
   ar8316_attach(struct arswitch_softc *sc)
   {
   
           sc->hal.arswitch_hw_setup = ar8316_hw_setup;
           sc->hal.arswitch_hw_global_setup = ar8316_hw_global_setup;
   
           /* Set the switch vlan capabilities. */
           sc->info.es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q |
               ETHERSWITCH_VLAN_PORT | ETHERSWITCH_VLAN_DOUBLE_TAG;
           sc->info.es_nvlangroups = AR8X16_MAX_VLANS;
   }

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