aha_isa.c

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    1 /*      $NetBSD: aha_isa.c,v 1.17 2002/10/02 03:10:45 thorpej Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Charles M. Hannum.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: aha_isa.c,v 1.17 2002/10/02 03:10:45 thorpej Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 #include <sys/device.h>
   45 
   46 #include <machine/bus.h>
   47 #include <machine/intr.h>
   48 
   49 #include <dev/scsipi/scsi_all.h>
   50 #include <dev/scsipi/scsipi_all.h>
   51 #include <dev/scsipi/scsiconf.h>
   52 
   53 #include <dev/isa/isavar.h>
   54 #include <dev/isa/isadmavar.h>
   55 
   56 #include <dev/ic/ahareg.h>
   57 #include <dev/ic/ahavar.h>
   58 
   59 #define AHA_ISA_IOSIZE  4
   60 
   61 int     aha_isa_probe __P((struct device *, struct cfdata *, void *));
   62 void    aha_isa_attach __P((struct device *, struct device *, void *));
   63 
   64 CFATTACH_DECL(aha_isa, sizeof(struct aha_softc),
   65     aha_isa_probe, aha_isa_attach, NULL, NULL);
   66 
   67 /*
   68  * Check the slots looking for a board we recognise
   69  * If we find one, note it's address (slot) and call
   70  * the actual probe routine to check it out.
   71  */
   72 int
   73 aha_isa_probe(parent, match, aux)
   74         struct device *parent;
   75         struct cfdata *match;
   76         void *aux;
   77 {
   78         struct isa_attach_args *ia = aux;
   79         bus_space_tag_t iot = ia->ia_iot;
   80         bus_space_handle_t ioh;
   81         struct aha_probe_data apd;
   82         int rv;
   83 
   84         if (ia->ia_nio < 1)
   85                 return (0);
   86         if (ia->ia_nirq < 1)
   87                 return (0);
   88         if (ia->ia_ndrq < 1)
   89                 return (0);
   90 
   91         if (ISA_DIRECT_CONFIG(ia))
   92                 return (0);
   93 
   94         /* Disallow wildcarded i/o address. */
   95         if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
   96                 return (0);
   97 
   98         if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh))
   99                 return (0);
  100 
  101         rv = aha_find(iot, ioh, &apd);
  102 
  103         bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE);
  104 
  105         if (rv) {
  106                 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT &&
  107                     ia->ia_irq[0].ir_irq != apd.sc_irq)
  108                         return (0);
  109                 if (ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT &&
  110                     ia->ia_drq[0].ir_drq != apd.sc_drq)
  111                         return (0);
  112 
  113                 ia->ia_nio = 1;
  114                 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE;
  115 
  116                 ia->ia_nirq = 1;
  117                 ia->ia_irq[0].ir_irq = apd.sc_irq;
  118 
  119                 ia->ia_ndrq = 1;
  120                 ia->ia_drq[0].ir_drq = apd.sc_drq;
  121 
  122                 ia->ia_niomem = 0;
  123         }
  124         return (rv);
  125 }
  126 
  127 /*
  128  * Attach all the sub-devices we can find
  129  */
  130 void
  131 aha_isa_attach(parent, self, aux)
  132         struct device *parent, *self;
  133         void *aux;
  134 {
  135         struct isa_attach_args *ia = aux;
  136         struct aha_softc *sc = (void *)self;
  137         bus_space_tag_t iot = ia->ia_iot;
  138         bus_space_handle_t ioh;
  139         struct aha_probe_data apd;
  140         isa_chipset_tag_t ic = ia->ia_ic;
  141         int error;
  142 
  143         printf("\n");
  144 
  145         if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) {
  146                 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
  147                 return;
  148         }
  149 
  150         sc->sc_iot = iot;
  151         sc->sc_ioh = ioh;
  152         sc->sc_dmat = ia->ia_dmat;
  153         if (!aha_find(iot, ioh, &apd)) {
  154                 printf("%s: aha_find failed\n", sc->sc_dev.dv_xname);
  155                 return;
  156         }
  157 
  158         if (apd.sc_drq != -1) {
  159                 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) {
  160                         printf("%s: unable to cascade DRQ, error = %d\n",
  161                             sc->sc_dev.dv_xname, error);
  162                         return;
  163                 }
  164         }
  165 
  166         sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO,
  167             aha_intr, sc);
  168         if (sc->sc_ih == NULL) {
  169                 printf("%s: couldn't establish interrupt\n",
  170                     sc->sc_dev.dv_xname);
  171                 return;
  172         }
  173 
  174         aha_attach(sc, &apd);
  175 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/isa/aha_isa.c

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sys/dev/isa/aha_isa.c