bha_eisa.c

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    1 /*      $NetBSD: bha_eisa.c,v 1.31 2008/04/28 20:23:48 martin 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  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: bha_eisa.c,v 1.31 2008/04/28 20:23:48 martin Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/device.h>
   38 
   39 #include <sys/bus.h>
   40 #include <sys/intr.h>
   41 
   42 #include <dev/scsipi/scsipi_all.h>
   43 #include <dev/scsipi/scsiconf.h>
   44 
   45 #include <dev/eisa/eisavar.h>
   46 #include <dev/eisa/eisadevs.h>
   47 
   48 #include <dev/ic/bhareg.h>
   49 #include <dev/ic/bhavar.h>
   50 
   51 #define BHA_EISA_SLOT_OFFSET    0x0c80
   52 #define BHA_EISA_IOSIZE         0x0010
   53 #define BHA_ISA_IOSIZE          0x0004
   54 
   55 #define BHA_EISA_IOCONF         0x0c
   56 
   57 static int      bha_eisa_address(bus_space_tag_t, bus_space_handle_t, int *);
   58 static int      bha_eisa_match(struct device *, struct cfdata *, void *);
   59 static void     bha_eisa_attach(struct device *, struct device *, void *);
   60 
   61 CFATTACH_DECL(bha_eisa, sizeof(struct bha_softc),
   62     bha_eisa_match, bha_eisa_attach, NULL, NULL);
   63 
   64 static int
   65 bha_eisa_address(bus_space_tag_t iot, bus_space_handle_t ioh, int *portp)
   66 {
   67         int port;
   68 
   69         switch (bus_space_read_1(iot, ioh, BHA_EISA_IOCONF) & 0x07) {
   70         case 0x00:
   71                 port = 0x330;
   72                 break;
   73         case 0x01:
   74                 port = 0x334;
   75                 break;
   76         case 0x02:
   77                 port = 0x230;
   78                 break;
   79         case 0x03:
   80                 port = 0x234;
   81                 break;
   82         case 0x04:
   83                 port = 0x130;
   84                 break;
   85         case 0x05:
   86                 port = 0x134;
   87                 break;
   88         default:
   89                 return (1);
   90         }
   91 
   92         *portp = port;
   93         return (0);
   94 }
   95 
   96 /*
   97  * Check the slots looking for a board we recognise
   98  * If we find one, note it's address (slot) and call
   99  * the actual probe routine to check it out.
  100  */
  101 static int
  102 bha_eisa_match(struct device *parent, struct cfdata *match,
  103     void *aux)
  104 {
  105         struct eisa_attach_args *ea = aux;
  106         bus_space_tag_t iot = ea->ea_iot;
  107         bus_space_handle_t ioh, ioh2;
  108         int port;
  109         int rv;
  110 
  111         /* must match one of our known ID strings */
  112         if (strcmp(ea->ea_idstring, "BUS4201") &&
  113             strcmp(ea->ea_idstring, "BUS4202"))
  114                 return (0);
  115 
  116         if (bus_space_map(iot,
  117             EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
  118             0, &ioh))
  119                 return (0);
  120 
  121         if (bha_eisa_address(iot, ioh, &port) ||
  122             bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2)) {
  123                 bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
  124                 return (0);
  125         }
  126 
  127         rv = bha_find(iot, ioh2);
  128 
  129         bus_space_unmap(iot, ioh2, BHA_ISA_IOSIZE);
  130         bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
  131 
  132         return (rv);
  133 }
  134 
  135 /*
  136  * Attach all the sub-devices we can find
  137  */
  138 static void
  139 bha_eisa_attach(struct device *parent, struct device *self, void *aux)
  140 {
  141         struct eisa_attach_args *ea = aux;
  142         struct bha_softc *sc = device_private(self);
  143         bus_space_tag_t iot = ea->ea_iot;
  144         bus_space_handle_t ioh, ioh2;
  145         int port;
  146         struct bha_probe_data bpd;
  147         eisa_chipset_tag_t ec = ea->ea_ec;
  148         eisa_intr_handle_t ih;
  149         const char *model, *intrstr;
  150 
  151         if (!strcmp(ea->ea_idstring, "BUS4201"))
  152                 model = EISA_PRODUCT_BUS4201;
  153         else if (!strcmp(ea->ea_idstring, "BUS4202"))
  154                 model = EISA_PRODUCT_BUS4202;
  155         else
  156                 model = "unknown model!";
  157         printf(": %s\n", model);
  158 
  159         if (bus_space_map(iot,
  160             EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
  161             0, &ioh))
  162                 panic("bha_eisa_attach: could not map EISA slot");
  163 
  164         if (bha_eisa_address(iot, ioh, &port) ||
  165             bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2))
  166                 panic("bha_eisa_attach: could not map ISA address");
  167 
  168         sc->sc_iot = iot;
  169         sc->sc_ioh = ioh2;
  170         sc->sc_dmat = ea->ea_dmat;
  171         if (!bha_probe_inquiry(iot, ioh2, &bpd))
  172                 panic("bha_eisa_attach failed");
  173 
  174         sc->sc_dmaflags = 0;
  175 
  176         if (eisa_intr_map(ec, bpd.sc_irq, &ih)) {
  177                 aprint_error_dev(&sc->sc_dev, "couldn't map interrupt (%d)\n",
  178                     bpd.sc_irq);
  179                 return;
  180         }
  181         intrstr = eisa_intr_string(ec, ih);
  182         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
  183             bha_intr, sc);
  184         if (sc->sc_ih == NULL) {
  185                 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt");
  186                 if (intrstr != NULL)
  187                         printf(" at %s", intrstr);
  188                 printf("\n");
  189                 return;
  190         }
  191         printf("%s: interrupting at %s\n", device_xname(&sc->sc_dev), intrstr);
  192 
  193         bha_attach(sc);
  194 }

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sys/dev/eisa/bha_eisa.c