FreeBSD/Linux Kernel Cross Reference
sys/dev/eisa/depca_eisa.c

     /*      $NetBSD: depca_eisa.c,v 1.12 2008/04/28 20:23:48 martin Exp $   */
     
     /*-
      * Copyright (c) 2000 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe.
      *
     * 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.
     */
    
    /*
     * EISA bus front-end for the Digital DEPCA Ethernet controller.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: depca_eisa.c,v 1.12 2008/04/28 20:23:48 martin Exp $");
    
    #include "opt_inet.h"
    #include "bpfilter.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/syslog.h>
    #include <sys/socket.h>
    #include <sys/device.h>
    
    #include <net/if.h>
    #include <net/if_media.h>
    #include <net/if_ether.h>
    
    #ifdef INET
    #include <netinet/in.h>
    #include <netinet/if_inarp.h>
    #endif
    
    #include <sys/bus.h>
    #include <sys/intr.h>
    
    #include <dev/eisa/eisareg.h>
    #include <dev/eisa/eisavar.h>
    #include <dev/eisa/eisadevs.h>
    
    #include <dev/ic/lancereg.h>
    #include <dev/ic/lancevar.h>
    #include <dev/ic/am7990reg.h>
    #include <dev/ic/am7990var.h>
    #include <dev/ic/depcareg.h>
    #include <dev/ic/depcavar.h>
    
    static int      depca_eisa_match(device_t, cfdata_t, void *);
    static void     depca_eisa_attach(device_t, device_t, void *);
    
    struct depca_eisa_softc {
            struct depca_softc sc_depca;
    
            eisa_chipset_tag_t sc_ec;
            int sc_irq;
            int sc_ist;
    };
    
    CFATTACH_DECL_NEW(depca_eisa, sizeof(struct depca_eisa_softc),
        depca_eisa_match, depca_eisa_attach, NULL, NULL);
    
    static void     *depca_eisa_intr_establish(struct depca_softc *,
                                               struct lance_softc *);
    
    static int
    depca_eisa_match(device_t parent, cfdata_t cf, void *aux)
    {
            struct eisa_attach_args *ea = aux;
    
            return (strcmp(ea->ea_idstring, "DEC4220") == 0);
    }
    
    #define DEPCA_ECU_FUNC_NETINTR  0
    #define DEPCA_ECU_FUNC_NETBUF   1
    
   static void
   depca_eisa_attach(device_t parent, device_t self, void *aux)
   {
           struct depca_eisa_softc *esc = device_private(self);
           struct depca_softc *sc = &esc->sc_depca;
           struct eisa_attach_args *ea = aux;
           struct eisa_cfg_mem ecm;
           struct eisa_cfg_irq eci;
   
           sc->sc_dev = self;
           aprint_error(": DEC DE422 Ethernet\n");
   
           sc->sc_iot = ea->ea_iot;
           sc->sc_memt = ea->ea_memt;
   
           esc->sc_ec = ea->ea_ec;
   
           sc->sc_intr_establish = depca_eisa_intr_establish;
   
           if (eisa_conf_read_mem(ea->ea_ec, ea->ea_slot,
               DEPCA_ECU_FUNC_NETBUF, 0, &ecm) != 0) {
                   aprint_error_dev(self, "unable to find network buffer\n");
                   return;
           }
   
           aprint_normal_dev(self, "shared memory at 0x%lx-0x%lx\n",
               ecm.ecm_addr, ecm.ecm_addr + ecm.ecm_size - 1);
   
           sc->sc_memsize = ecm.ecm_size;
   
           if (bus_space_map(sc->sc_iot, EISA_SLOT_ADDR(ea->ea_slot) + 0xc00, 16,
               0, &sc->sc_ioh) != 0) {
                   aprint_error_dev(self, "unable to map i/o space\n");
                   return;
           }
           if (bus_space_map(sc->sc_memt, ecm.ecm_addr, sc->sc_memsize,
               0, &sc->sc_memh) != 0) {
                   aprint_error_dev(self, "unable to map memory space\n");
                   return;
           }
   
           if (eisa_conf_read_irq(ea->ea_ec, ea->ea_slot,
               DEPCA_ECU_FUNC_NETINTR, 0, &eci) != 0) {
                   aprint_error_dev(self, "unable to determine IRQ\n");
                   return;
           }
   
           esc->sc_irq = eci.eci_irq;
           esc->sc_ist = eci.eci_ist;
   
           depca_attach(sc);
   }
   
   static void *
   depca_eisa_intr_establish(struct depca_softc *parent, struct lance_softc *child)
   {
           struct depca_eisa_softc *esc = (struct depca_eisa_softc *)parent;
           eisa_intr_handle_t ih;
           const char *intrstr;
           void *rv;
   
           if (eisa_intr_map(esc->sc_ec, esc->sc_irq, &ih)) {
                   aprint_error_dev(parent->sc_dev,
                       "unable to map interrupt (%d)\n", esc->sc_irq);
                   return (NULL);
           }
           intrstr = eisa_intr_string(esc->sc_ec, ih);
           rv = eisa_intr_establish(esc->sc_ec, ih, esc->sc_ist, IPL_NET,
               (esc->sc_ist == IST_LEVEL) ? am7990_intr : depca_intredge, child);
           if (rv == NULL) {
                   aprint_error_dev(parent->sc_dev,
                       "unable to establish interrupt");
                   if (intrstr != NULL)
                           aprint_error(" at %s", intrstr);
                   aprint_error("\n");
                   return (NULL);
           }
           if (intrstr != NULL)
                   aprint_normal_dev(parent->sc_dev, "interrupting at %s\n",
                       intrstr);
   
           return (rv);
   }

Cache object: 43e78b57040598ed5041f08d9eda1ee7