sys/dev/eisa/bha_eisa.c

   1 /*      $NetBSD: bha_eisa.c,v 1.33 2009/05/12 14:21:32 cegger 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 1.33 2009/05/12 14:21:32 cegger 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(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(device_t parent, cfdata_t 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(device_t parent, device_t 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                         aprint_error(" at %s", intrstr);
 188                 aprint_error("\n");
 189                 return;
 190         }
 191         aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr);
 192
 193         bha_attach(sc);
 194 }