FreeBSD/Linux Kernel Cross Reference
sys/dev/isapnp/if_le_isapnp.c

     /*      $NetBSD: if_le_isapnp.c,v 1.24 2002/10/04 16:16:32 tsutsui Exp $        */
     
     /*-
      * Copyright (c) 1997 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      * NASA Ames Research Center.
     *
     * 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the NetBSD
     *      Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * 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.
     */
    
    /*
     * Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org> and 
     * Matthias Drochner. 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Jonathan Stone.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_le_isapnp.c,v 1.24 2002/10/04 16:16:32 tsutsui Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/ioctl.h>
    #include <sys/errno.h>
    #include <sys/syslog.h>
    #include <sys/select.h>
    #include <sys/device.h>
    
    #include <uvm/uvm_extern.h>
    
    #include <net/if.h>
    #include <net/if_dl.h>
    #include <net/if_ether.h>
    #include <net/if_media.h>
    
    #include <machine/cpu.h>
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <dev/isa/isavar.h>
    #include <dev/isa/isadmavar.h>
    
    #include <dev/isapnp/isapnpreg.h>
    #include <dev/isapnp/isapnpvar.h>
    #include <dev/isapnp/isapnpdevs.h>
   
   #include <dev/ic/lancereg.h>
   #include <dev/ic/lancevar.h>
   #include <dev/ic/am7990reg.h>
   #include <dev/ic/am7990var.h>
   
   #define LE_ISAPNP_MEMSIZE       16384
   
   #define PCNET_SAPROM    0x00
   #define PCNET_RDP       0x10
   #define PCNET_RAP       0x12
   
   /*
    * Ethernet software status per interface.
    *
    * Each interface is referenced by a network interface structure,
    * ethercom.ec_if, which the routing code uses to locate the interface.
    * This structure contains the output queue for the interface, its address, ...
    */
   struct le_isapnp_softc {
           struct  am7990_softc sc_am7990; /* glue to MI code */
   
           void    *sc_ih;
           bus_space_tag_t sc_iot;         /* space cookie */
           bus_space_handle_t sc_ioh;      /* bus space handle */
           bus_dma_tag_t   sc_dmat;        /* bus dma tag */
           bus_dmamap_t    sc_dmam;        /* bus dma map */
           int     sc_rap, sc_rdp;         /* offsets to LANCE registers */
   };
   
   int le_isapnp_match __P((struct device *, struct cfdata *, void *));
   void le_isapnp_attach __P((struct device *, struct device *, void *));
   
   CFATTACH_DECL(le_isapnp, sizeof(struct le_isapnp_softc),
       le_isapnp_match, le_isapnp_attach, NULL, NULL);
   
   int     le_isapnp_intredge __P((void *));
   static void le_isapnp_wrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
   static u_int16_t le_isapnp_rdcsr __P((struct lance_softc *, u_int16_t));
   
   static void
   le_isapnp_wrcsr(sc, port, val)
           struct lance_softc *sc;
           u_int16_t port, val;
   {
           struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
           bus_space_tag_t iot = lesc->sc_iot;
           bus_space_handle_t ioh = lesc->sc_ioh;
   
           bus_space_write_2(iot, ioh, lesc->sc_rap, port);
           bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
   }
   
   static u_int16_t
   le_isapnp_rdcsr(sc, port)
           struct lance_softc *sc;
           u_int16_t port;
   {
           struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
           bus_space_tag_t iot = lesc->sc_iot;
           bus_space_handle_t ioh = lesc->sc_ioh;
           u_int16_t val;
   
           bus_space_write_2(iot, ioh, lesc->sc_rap, port);
           val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
           return (val);
   }
   
   int
   le_isapnp_match(parent, match, aux)
           struct device *parent;
           struct cfdata *match;
           void *aux;
   {
           int pri, variant;
   
           pri = isapnp_devmatch(aux, &isapnp_le_devinfo, &variant);
           if (pri && variant > 0)
                   pri = 0;
           return (pri);
   }
   
   void
   le_isapnp_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)self;
           struct lance_softc *sc = &lesc->sc_am7990.lsc;
           struct isapnp_attach_args *ipa = aux;
           bus_space_tag_t iot;
           bus_space_handle_t ioh;
           bus_dma_tag_t dmat;
           bus_dma_segment_t seg;
           int i, rseg, error;
   
           if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
                   printf(": error in region allocation\n");
                   return;
           }
   
           lesc->sc_iot = iot = ipa->ipa_iot;
           lesc->sc_ioh = ioh = ipa->ipa_io[0].h;
           lesc->sc_dmat = dmat = ipa->ipa_dmat;
   
           lesc->sc_rap = PCNET_RAP;
           lesc->sc_rdp = PCNET_RDP;
   
           /*
            * Extract the physical MAC address from the ROM.
            */
           for (i = 0; i < sizeof(sc->sc_enaddr); i++)
                   sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, PCNET_SAPROM + i);
   
           /*
            * Allocate a DMA area for the card.
            */
           if (bus_dmamem_alloc(dmat, LE_ISAPNP_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
               &rseg, BUS_DMA_NOWAIT)) {
                   printf(": couldn't allocate memory for card\n");
                   return;
           }
           if (bus_dmamem_map(dmat, &seg, rseg, LE_ISAPNP_MEMSIZE,
               (caddr_t *)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
                   printf(": couldn't map memory for card\n");
                   return;
           }
   
           /*
            * Create and load the DMA map for the DMA area.
            */
           if (bus_dmamap_create(dmat, LE_ISAPNP_MEMSIZE, 1,
               LE_ISAPNP_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
                   printf(": couldn't create DMA map\n");
                   bus_dmamem_free(dmat, &seg, rseg);
                   return;
           }
           if (bus_dmamap_load(dmat, lesc->sc_dmam,
               sc->sc_mem, LE_ISAPNP_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
                   printf(": coundn't load DMA map\n");
                   bus_dmamem_free(dmat, &seg, rseg);
                   return;
           }
   
           sc->sc_conf3 = 0;
           sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
           sc->sc_memsize = LE_ISAPNP_MEMSIZE;
   
           sc->sc_copytodesc = lance_copytobuf_contig;
           sc->sc_copyfromdesc = lance_copyfrombuf_contig;
           sc->sc_copytobuf = lance_copytobuf_contig;
           sc->sc_copyfrombuf = lance_copyfrombuf_contig;
           sc->sc_zerobuf = lance_zerobuf_contig;
   
           sc->sc_rdcsr = le_isapnp_rdcsr;
           sc->sc_wrcsr = le_isapnp_wrcsr;
           sc->sc_hwinit = NULL;
   
           if (ipa->ipa_ndrq > 0) {
                   if ((error = isa_dmacascade(ipa->ipa_ic,
                       ipa->ipa_drq[0].num)) != 0) {
                           printf(": unable to cascade DRQ, error = %d\n", error);
                           return;
                   }
           }
   
           lesc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
               ipa->ipa_irq[0].type, IPL_NET, le_isapnp_intredge, sc);
   
           printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
   
           printf("%s", sc->sc_dev.dv_xname);
           am7990_config(&lesc->sc_am7990);
   }
   
   
   /*
    * Controller interrupt.
    */
   int
   le_isapnp_intredge(arg)
           void *arg;
   {
   
           if (am7990_intr(arg) == 0)
                   return (0);
           for (;;)
                   if (am7990_intr(arg) == 0)
                           return (1);
   }

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