The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/hme/if_hme_sbus.c

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    1 /*-
    2  * Copyright (c) 1999 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Paul Kranenburg.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   27  * POSSIBILITY OF SUCH DAMAGE.
   28  *
   29  *      from: NetBSD: if_hme_sbus.c,v 1.19 2004/03/17 17:04:58 pk Exp
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: stable/8/sys/dev/hme/if_hme_sbus.c 230714 2012-01-29 01:22:48Z marius $");
   34 
   35 /*
   36  * SBus front-end device driver for the HME ethernet device.
   37  */
   38 
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/bus.h>
   42 #include <sys/kernel.h>
   43 #include <sys/module.h>
   44 #include <sys/resource.h>
   45 #include <sys/socket.h>
   46 
   47 #include <dev/ofw/ofw_bus.h>
   48 
   49 #include <machine/bus.h>
   50 #include <machine/ofw_machdep.h>
   51 #include <machine/resource.h>
   52 
   53 #include <sys/rman.h>
   54 
   55 #include <net/ethernet.h>
   56 #include <net/if.h>
   57 #include <net/if_arp.h>
   58 #include <net/if_dl.h>
   59 #include <net/if_media.h>
   60 
   61 #include <dev/mii/mii.h>
   62 #include <dev/mii/miivar.h>
   63 
   64 #include <sparc64/sbus/sbusvar.h>
   65 
   66 #include <dev/hme/if_hmereg.h>
   67 #include <dev/hme/if_hmevar.h>
   68 
   69 #include "miibus_if.h"
   70 
   71 struct hme_sbus_softc {
   72         struct  hme_softc       hsc_hme;        /* HME device */
   73         struct  resource        *hsc_seb_res;
   74         struct  resource        *hsc_etx_res;
   75         struct  resource        *hsc_erx_res;
   76         struct  resource        *hsc_mac_res;
   77         struct  resource        *hsc_mif_res;
   78         struct  resource        *hsc_ires;
   79         void                    *hsc_ih;
   80 };
   81 
   82 static int hme_sbus_probe(device_t);
   83 static int hme_sbus_attach(device_t);
   84 static int hme_sbus_detach(device_t);
   85 static int hme_sbus_suspend(device_t);
   86 static int hme_sbus_resume(device_t);
   87 
   88 static device_method_t hme_sbus_methods[] = {
   89         /* Device interface */
   90         DEVMETHOD(device_probe,         hme_sbus_probe),
   91         DEVMETHOD(device_attach,        hme_sbus_attach),
   92         DEVMETHOD(device_detach,        hme_sbus_detach),
   93         DEVMETHOD(device_suspend,       hme_sbus_suspend),
   94         DEVMETHOD(device_resume,        hme_sbus_resume),
   95         /* Can just use the suspend method here. */
   96         DEVMETHOD(device_shutdown,      hme_sbus_suspend),
   97 
   98         /* MII interface */
   99         DEVMETHOD(miibus_readreg,       hme_mii_readreg),
  100         DEVMETHOD(miibus_writereg,      hme_mii_writereg),
  101         DEVMETHOD(miibus_statchg,       hme_mii_statchg),
  102 
  103         DEVMETHOD_END
  104 };
  105 
  106 static driver_t hme_sbus_driver = {
  107         "hme",
  108         hme_sbus_methods,
  109         sizeof(struct hme_sbus_softc)
  110 };
  111 
  112 DRIVER_MODULE(hme, sbus, hme_sbus_driver, hme_devclass, 0, 0);
  113 MODULE_DEPEND(hme, sbus, 1, 1, 1);
  114 MODULE_DEPEND(hme, ether, 1, 1, 1);
  115 
  116 static int
  117 hme_sbus_probe(device_t dev)
  118 {
  119         const char *name;
  120 
  121         name = ofw_bus_get_name(dev);
  122         if (strcmp(name, "SUNW,qfe") == 0 ||
  123             strcmp(name, "SUNW,hme") == 0) {
  124                 device_set_desc(dev, "Sun HME 10/100 Ethernet");
  125                 return (0);
  126         }
  127         return (ENXIO);
  128 }
  129 
  130 static int
  131 hme_sbus_attach(device_t dev)
  132 {
  133         struct hme_sbus_softc *hsc;
  134         struct hme_softc *sc;
  135         u_long start, count;
  136         uint32_t burst;
  137         int i, error = 0;
  138 
  139         hsc = device_get_softc(dev);
  140         sc = &hsc->hsc_hme;
  141         mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  142             MTX_DEF);
  143         /*
  144          * Map five register banks:
  145          *
  146          *      bank 0: HME SEB registers
  147          *      bank 1: HME ETX registers
  148          *      bank 2: HME ERX registers
  149          *      bank 3: HME MAC registers
  150          *      bank 4: HME MIF registers
  151          *
  152          */
  153         i = 0;
  154         hsc->hsc_seb_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  155             &i, RF_ACTIVE);
  156         if (hsc->hsc_seb_res == NULL) {
  157                 device_printf(dev, "cannot map SEB registers\n");
  158                 error = ENXIO;
  159                 goto fail_mtx_res;
  160         }
  161         sc->sc_sebt = rman_get_bustag(hsc->hsc_seb_res);
  162         sc->sc_sebh = rman_get_bushandle(hsc->hsc_seb_res);
  163 
  164         i = 1;
  165         hsc->hsc_etx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  166             &i, RF_ACTIVE);
  167         if (hsc->hsc_etx_res == NULL) {
  168                 device_printf(dev, "cannot map ETX registers\n");
  169                 error = ENXIO;
  170                 goto fail_seb_res;
  171         }
  172         sc->sc_etxt = rman_get_bustag(hsc->hsc_etx_res);
  173         sc->sc_etxh = rman_get_bushandle(hsc->hsc_etx_res);
  174 
  175         i = 2;
  176         hsc->hsc_erx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  177             &i, RF_ACTIVE);
  178         if (hsc->hsc_erx_res == NULL) {
  179                 device_printf(dev, "cannot map ERX registers\n");
  180                 error = ENXIO;
  181                 goto fail_etx_res;
  182         }
  183         sc->sc_erxt = rman_get_bustag(hsc->hsc_erx_res);
  184         sc->sc_erxh = rman_get_bushandle(hsc->hsc_erx_res);
  185 
  186         i = 3;
  187         hsc->hsc_mac_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  188             &i, RF_ACTIVE);
  189         if (hsc->hsc_mac_res == NULL) {
  190                 device_printf(dev, "cannot map MAC registers\n");
  191                 error = ENXIO;
  192                 goto fail_erx_res;
  193         }
  194         sc->sc_mact = rman_get_bustag(hsc->hsc_mac_res);
  195         sc->sc_mach = rman_get_bushandle(hsc->hsc_mac_res);
  196 
  197         /*
  198          * At least on some HMEs, the MIF registers seem to be inside the MAC
  199          * range, so try to kludge around it.
  200          */
  201         i = 4;
  202         hsc->hsc_mif_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  203             &i, RF_ACTIVE);
  204         if (hsc->hsc_mif_res == NULL) {
  205                 if (bus_get_resource(dev, SYS_RES_MEMORY, i,
  206                     &start, &count) != 0) {
  207                         device_printf(dev, "cannot get MIF registers\n");
  208                         error = ENXIO;
  209                         goto fail_mac_res;
  210                 }
  211                 if (start < rman_get_start(hsc->hsc_mac_res) ||
  212                     start + count - 1 > rman_get_end(hsc->hsc_mac_res)) {
  213                         device_printf(dev, "cannot move MIF registers to MAC "
  214                             "bank\n");
  215                         error = ENXIO;
  216                         goto fail_mac_res;
  217                 }
  218                 sc->sc_mift = sc->sc_mact;
  219                 bus_space_subregion(sc->sc_mact, sc->sc_mach,
  220                     start - rman_get_start(hsc->hsc_mac_res), count,
  221                     &sc->sc_mifh);
  222         } else {
  223                 sc->sc_mift = rman_get_bustag(hsc->hsc_mif_res);
  224                 sc->sc_mifh = rman_get_bushandle(hsc->hsc_mif_res);
  225         }
  226 
  227         i = 0;
  228         hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  229             &i, RF_SHAREABLE | RF_ACTIVE);
  230         if (hsc->hsc_ires == NULL) {
  231                 device_printf(dev, "could not allocate interrupt\n");
  232                 error = ENXIO;
  233                 goto fail_mif_res;
  234         }
  235 
  236         OF_getetheraddr(dev, sc->sc_enaddr);
  237 
  238         burst = sbus_get_burstsz(dev);
  239         /* Translate into plain numerical format */
  240         if ((burst & SBUS_BURST_64))
  241                 sc->sc_burst = 64;
  242         else if ((burst & SBUS_BURST_32))
  243                 sc->sc_burst = 32;
  244         else if ((burst & SBUS_BURST_16))
  245                 sc->sc_burst = 16;
  246         else
  247                  sc->sc_burst = 0;
  248 
  249         sc->sc_dev = dev;
  250         sc->sc_flags = 0;
  251 
  252         if ((error = hme_config(sc)) != 0) {
  253                 device_printf(dev, "could not be configured\n");
  254                 goto fail_ires;
  255         }
  256 
  257         if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET |
  258             INTR_MPSAFE, NULL, hme_intr, sc, &hsc->hsc_ih)) != 0) {
  259                 device_printf(dev, "couldn't establish interrupt\n");
  260                 hme_detach(sc);
  261                 goto fail_ires;
  262         }
  263         return (0);
  264 
  265 fail_ires:
  266         bus_release_resource(dev, SYS_RES_IRQ,
  267             rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
  268 fail_mif_res:
  269         if (hsc->hsc_mif_res != NULL) {
  270                 bus_release_resource(dev, SYS_RES_MEMORY,
  271                     rman_get_rid(hsc->hsc_mif_res), hsc->hsc_mif_res);
  272         }
  273 fail_mac_res:
  274         bus_release_resource(dev, SYS_RES_MEMORY,
  275             rman_get_rid(hsc->hsc_mac_res), hsc->hsc_mac_res);
  276 fail_erx_res:
  277         bus_release_resource(dev, SYS_RES_MEMORY,
  278             rman_get_rid(hsc->hsc_erx_res), hsc->hsc_erx_res);
  279 fail_etx_res:
  280         bus_release_resource(dev, SYS_RES_MEMORY,
  281             rman_get_rid(hsc->hsc_etx_res), hsc->hsc_etx_res);
  282 fail_seb_res:
  283         bus_release_resource(dev, SYS_RES_MEMORY,
  284             rman_get_rid(hsc->hsc_seb_res), hsc->hsc_seb_res);
  285 fail_mtx_res:
  286         mtx_destroy(&sc->sc_lock);
  287         return (error);
  288 }
  289 
  290 static int
  291 hme_sbus_detach(device_t dev)
  292 {
  293         struct hme_sbus_softc *hsc;
  294         struct hme_softc *sc;
  295 
  296         hsc = device_get_softc(dev);
  297         sc = &hsc->hsc_hme;
  298         bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
  299         hme_detach(sc);
  300         bus_release_resource(dev, SYS_RES_IRQ,
  301             rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
  302         if (hsc->hsc_mif_res != NULL) {
  303                 bus_release_resource(dev, SYS_RES_MEMORY,
  304                     rman_get_rid(hsc->hsc_mif_res), hsc->hsc_mif_res);
  305         }
  306         bus_release_resource(dev, SYS_RES_MEMORY,
  307             rman_get_rid(hsc->hsc_mac_res), hsc->hsc_mac_res);
  308         bus_release_resource(dev, SYS_RES_MEMORY,
  309             rman_get_rid(hsc->hsc_erx_res), hsc->hsc_erx_res);
  310         bus_release_resource(dev, SYS_RES_MEMORY,
  311             rman_get_rid(hsc->hsc_etx_res), hsc->hsc_etx_res);
  312         bus_release_resource(dev, SYS_RES_MEMORY,
  313             rman_get_rid(hsc->hsc_seb_res), hsc->hsc_seb_res);
  314         mtx_destroy(&sc->sc_lock);
  315         return (0);
  316 }
  317 
  318 static int
  319 hme_sbus_suspend(device_t dev)
  320 {
  321         struct hme_sbus_softc *hsc;
  322 
  323         hsc = device_get_softc(dev);
  324         hme_suspend(&hsc->hsc_hme);
  325         return (0);
  326 }
  327 
  328 static int
  329 hme_sbus_resume(device_t dev)
  330 {
  331         struct hme_sbus_softc *hsc;
  332 
  333         hsc = device_get_softc(dev);
  334         hme_resume(&hsc->hsc_hme);
  335         return (0);
  336 }

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