bha_eisa.c

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    1 /*      $NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 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  *
   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 1.38 2021/01/27 04:35:15 thorpej 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(device_t, cfdata_t, void *);
   59 static void     bha_eisa_attach(device_t, device_t, void *);
   60 
   61 CFATTACH_DECL_NEW(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 static const struct device_compatible_entry compat_data[] = {
   97         { .compat = "BUS4201",  .data = EISA_PRODUCT_BUS4201 },
   98         { .compat = "BUS4202",  .data = EISA_PRODUCT_BUS4202 },
   99         DEVICE_COMPAT_EOL
  100 };
  101 
  102 /*
  103  * Check the slots looking for a board we recognise
  104  * If we find one, note its address (slot) and call
  105  * the actual probe routine to check it out.
  106  */
  107 static int
  108 bha_eisa_match(device_t parent, cfdata_t match, void *aux)
  109 {
  110         struct eisa_attach_args *ea = aux;
  111         bus_space_tag_t iot = ea->ea_iot;
  112         bus_space_handle_t ioh, ioh2;
  113         int port;
  114         int rv;
  115 
  116         if (!eisa_compatible_match(ea, compat_data))
  117                 return (0);
  118 
  119         if (bus_space_map(iot,
  120             EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
  121             0, &ioh))
  122                 return (0);
  123 
  124         if (bha_eisa_address(iot, ioh, &port) ||
  125             bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2)) {
  126                 bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
  127                 return (0);
  128         }
  129 
  130         rv = bha_find(iot, ioh2);
  131 
  132         bus_space_unmap(iot, ioh2, BHA_ISA_IOSIZE);
  133         bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
  134 
  135         return (rv);
  136 }
  137 
  138 /*
  139  * Attach all the sub-devices we can find
  140  */
  141 static void
  142 bha_eisa_attach(device_t parent, device_t self, void *aux)
  143 {
  144         struct eisa_attach_args *ea = aux;
  145         struct bha_softc *sc = device_private(self);
  146         const struct device_compatible_entry *dce;
  147         bus_space_tag_t iot = ea->ea_iot;
  148         bus_space_handle_t ioh, ioh2;
  149         int port;
  150         struct bha_probe_data bpd;
  151         eisa_chipset_tag_t ec = ea->ea_ec;
  152         eisa_intr_handle_t ih;
  153         const char *intrstr;
  154         char intrbuf[EISA_INTRSTR_LEN];
  155 
  156         sc->sc_dev = self;
  157 
  158         dce = eisa_compatible_lookup(ea, compat_data);
  159         KASSERT(dce != NULL);
  160 
  161         printf(": %s\n", (const char *)dce->data);
  162 
  163         if (bus_space_map(iot,
  164             EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
  165             0, &ioh))
  166                 panic("bha_eisa_attach: could not map EISA slot");
  167 
  168         if (bha_eisa_address(iot, ioh, &port) ||
  169             bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2))
  170                 panic("bha_eisa_attach: could not map ISA address");
  171 
  172         sc->sc_iot = iot;
  173         sc->sc_ioh = ioh2;
  174         sc->sc_dmat = ea->ea_dmat;
  175         if (!bha_probe_inquiry(iot, ioh2, &bpd))
  176                 panic("bha_eisa_attach failed");
  177 
  178         sc->sc_dmaflags = 0;
  179 
  180         if (eisa_intr_map(ec, bpd.sc_irq, &ih)) {
  181                 aprint_error_dev(sc->sc_dev, "couldn't map interrupt (%d)\n",
  182                     bpd.sc_irq);
  183                 return;
  184         }
  185         intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
  186         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
  187             bha_intr, sc);
  188         if (sc->sc_ih == NULL) {
  189                 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
  190                 if (intrstr != NULL)
  191                         aprint_error(" at %s", intrstr);
  192                 aprint_error("\n");
  193                 return;
  194         }
  195         aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
  196 
  197         bha_attach(sc);
  198 }

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

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sys/dev/eisa/bha_eisa.c