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

     /* $NetBSD: atppc_isapnp.c,v 1.2 2004/01/28 19:33:10 jdolecek Exp $ */
     
     /*-
      * Copyright (c) 2004 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jaromir Dolecek.
      *
     * 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: atppc_isapnp.c,v 1.2 2004/01/28 19:33:10 jdolecek Exp $");
    
    #include "opt_atppc.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/errno.h>
    #include <sys/ioctl.h>
    #include <sys/syslog.h>
    #include <sys/device.h>
    #include <sys/proc.h>
    #include <sys/termios.h>
    
    #include <machine/bus.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/atppcvar.h>
    #include <dev/isa/atppc_isadma.h>
    
    static int      atppc_isapnp_match(struct device *, struct cfdata *, void *);
    static void     atppc_isapnp_attach(struct device *, struct device *, void *);
    
    struct atppc_isapnp_softc {
            struct atppc_softc sc_atppc;
    
            isa_chipset_tag_t sc_ic;
            int sc_drq;
    };
    
    CFATTACH_DECL(atppc_isapnp, sizeof(struct atppc_isapnp_softc),
        atppc_isapnp_match, atppc_isapnp_attach, NULL, NULL);
    
    static int atppc_isapnp_dma_start(struct atppc_softc *, void *, u_int, 
            u_int8_t);
    static int atppc_isapnp_dma_finish(struct atppc_softc *);
    static int atppc_isapnp_dma_abort(struct atppc_softc *);
    static int atppc_isapnp_dma_malloc(struct device *, caddr_t *, bus_addr_t *, 
            bus_size_t);
    static void atppc_isapnp_dma_free(struct device *, caddr_t *, bus_addr_t *, 
            bus_size_t);
    /*
     * atppc_isapnp_match: autoconf(9) match routine
     */
    static int
    atppc_isapnp_match(struct device *parent, struct cfdata *match, void *aux)
    {
            int pri, variant;
    
            pri = isapnp_devmatch(aux, &isapnp_atppc_devinfo, &variant);
            if (pri && variant > 0)
                    pri = 0;
            return (pri);
    }
    
   static void
   atppc_isapnp_attach(struct device *parent, struct device *self, void *aux)
   {
           struct atppc_softc *sc = (struct atppc_softc *) self;
           struct atppc_isapnp_softc *asc = (struct atppc_isapnp_softc *)self;
           struct isapnp_attach_args *ipa = aux;
   
           sc->sc_dev_ok = ATPPC_NOATTACH;
   
           printf(": AT Parallel Port\n");
   
           if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
                   printf("%s: error in region allocation\n", 
                          sc->sc_dev.dv_xname);
                   return;
           }
   
           /* Attach */
           sc->sc_iot = ipa->ipa_iot;
           sc->sc_ioh = ipa->ipa_io[0].h;
           sc->sc_has = 0;
           asc->sc_ic = ipa->ipa_ic;
           asc->sc_drq = -1;       /* Initialized below */
   
           sc->sc_dev_ok = ATPPC_ATTACHED;
   
           sc->sc_ieh = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
               ipa->ipa_irq[0].type, IPL_TTY, atppcintr, sc);
           sc->sc_has |= ATPPC_HAS_INTR;
   
           /* setup DMA hooks */
           if (ipa->ipa_ndrq > 0
               && atppc_isadma_setup(sc, asc->sc_ic, ipa->ipa_drq[0].num) == 0) {
                   asc->sc_drq = ipa->ipa_drq[0].num;
                   sc->sc_has |= ATPPC_HAS_DMA;
                   sc->sc_dma_start = atppc_isapnp_dma_start;
                   sc->sc_dma_finish = atppc_isapnp_dma_finish;
                   sc->sc_dma_abort = atppc_isapnp_dma_abort;
                   sc->sc_dma_malloc = atppc_isapnp_dma_malloc;
                   sc->sc_dma_free = atppc_isapnp_dma_free;
           }
   
           /* Run soft configuration attach */
           atppc_sc_attach(sc);
   }
   
   /* Start DMA operation over ISA bus */
   static int 
   atppc_isapnp_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
           u_int8_t mode)
   {
           struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
           
           return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
   }
   
   /* Stop DMA operation over ISA bus */
   static int 
   atppc_isapnp_dma_finish(struct atppc_softc * lsc)
   {
           struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
           
           return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
   }
   
   /* Abort DMA operation over ISA bus */
   int 
   atppc_isapnp_dma_abort(struct atppc_softc * lsc)
   {
           struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
           
           return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
   }
   
   /* Allocate memory for DMA over ISA bus */ 
   int
   atppc_isapnp_dma_malloc(struct device * dev, caddr_t * buf, bus_addr_t * bus_addr,
           bus_size_t size)
   {
           struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) dev;
   
           return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
   }
   
   /* Free memory allocated by atppc_isa_dma_malloc() */ 
   void 
   atppc_isapnp_dma_free(struct device * dev, caddr_t * buf, bus_addr_t * bus_addr, 
           bus_size_t size)
   {
           struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) dev;
   
           return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
   }

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