sys/dev/eisa/dpt_eisa.c

   1 /*      $NetBSD: dpt_eisa.c,v 1.19 2009/05/12 12:12:52 cegger Exp $     */
   2
   3 /*
   4  * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@NetBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  */
  29
  30 /*
  31  * EISA front-end for DPT EATA SCSI driver.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __KERNEL_RCSID(0, "$NetBSD: dpt_eisa.c,v 1.19 2009/05/12 12:12:52 cegger Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/device.h>
  40 #include <sys/queue.h>
  41
  42 #include <sys/bus.h>
  43 #include <sys/intr.h>
  44
  45 #include <dev/scsipi/scsipi_all.h>
  46 #include <dev/scsipi/scsiconf.h>
  47
  48 #include <dev/eisa/eisavar.h>
  49
  50 #include <dev/ic/dptreg.h>
  51 #include <dev/ic/dptvar.h>
  52
  53 #include <dev/i2o/dptivar.h>
  54
  55 #define DPT_EISA_SLOT_OFFSET            0x0c00
  56 #define DPT_EISA_IOSIZE                 0x0100
  57 #define DPT_EISA_IOCONF                 0x90
  58 #define DPT_EISA_EATA_REG_OFFSET        0x88
  59
  60 static void     dpt_eisa_attach(device_t, device_t, void *);
  61 static int      dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
  62 static int      dpt_eisa_match(device_t, cfdata_t, void *);
  63
  64 CFATTACH_DECL(dpt_eisa, sizeof(struct dpt_softc),
  65     dpt_eisa_match, dpt_eisa_attach, NULL, NULL);
  66
  67 static const char * const dpt_eisa_boards[] = {
  68         "DPT2402",
  69         "DPTA401",
  70         "DPTA402",
  71         "DPTA410",
  72         "DPTA411",
  73         "DPTA412",
  74         "DPTA420",
  75         "DPTA501",
  76         "DPTA502",
  77         "DPTA701",
  78         "DPTBC01",
  79         "NEC8200",      /* OEM */
  80         "ATT2408",      /* OEM */
  81         NULL
  82 };
  83
  84 static int
  85 dpt_eisa_irq(bus_space_tag_t iot, bus_space_handle_t ioh, int *irq)
  86 {
  87
  88         switch (bus_space_read_1(iot, ioh, DPT_EISA_IOCONF) & 0x38) {
  89         case 0x08:
  90                 *irq = 11;
  91                 break;
  92         case 0x10:
  93                 *irq = 15;
  94                 break;
  95         case 0x20:
  96                 *irq = 14;
  97                 break;
  98         default:
  99                 return (-1);
 100         }
 101
 102         return (0);
 103 }
 104
 105 static int
 106 dpt_eisa_match(device_t parent, cfdata_t match,
 107     void *aux)
 108 {
 109         struct eisa_attach_args *ea;
 110         int i;
 111
 112         ea = aux;
 113
 114         for (i = 0; dpt_eisa_boards[i] != NULL; i++)
 115                 if (strcmp(ea->ea_idstring, dpt_eisa_boards[i]) == 0)
 116                         break;
 117
 118         return (dpt_eisa_boards[i] != NULL);
 119 }
 120
 121 static void
 122 dpt_eisa_attach(device_t parent, device_t self, void *aux)
 123 {
 124         struct eisa_attach_args *ea;
 125         bus_space_handle_t ioh;
 126         eisa_chipset_tag_t ec;
 127         eisa_intr_handle_t ih;
 128         struct dpt_softc *sc;
 129         bus_space_tag_t iot;
 130         const char *intrstr;
 131         int irq;
 132
 133         ea = aux;
 134         sc = device_private(self);
 135         iot = ea->ea_iot;
 136         ec = ea->ea_ec;
 137
 138         printf(": ");
 139
 140         if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
 141             DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
 142                 printf("can't map i/o space\n");
 143                 return;
 144         }
 145
 146         sc->sc_iot = iot;
 147         sc->sc_ioh = ioh;
 148         sc->sc_dmat = ea->ea_dmat;
 149
 150         /* Map and establish the interrupt. */
 151         if (dpt_eisa_irq(iot, ioh, &irq)) {
 152                 printf("HBA on invalid IRQ\n");
 153                 return;
 154         }
 155
 156         if (eisa_intr_map(ec, irq, &ih)) {
 157                 printf("can't map interrupt (%d)\n", irq);
 158                 return;
 159         }
 160
 161         intrstr = eisa_intr_string(ec, ih);
 162         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
 163             dpt_intr, sc);
 164         if (sc->sc_ih == NULL) {
 165                 printf("can't establish interrupt");
 166                 if (intrstr != NULL)
 167                         printf(" at %s", intrstr);
 168                 printf("\n");
 169                 return;
 170         }
 171
 172         /* Read the EATA configuration. */
 173         if (dpt_readcfg(sc)) {
 174                 aprint_error_dev(&sc->sc_dv, "readcfg failed - see dpt(4)\n");
 175                 return;
 176         }
 177
 178         sc->sc_bustype = SI_EISA_BUS;
 179         sc->sc_isaport =  EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
 180         sc->sc_isairq = irq;
 181
 182         /* Now attach to the bus-independent code. */
 183         dpt_init(sc, intrstr);
 184 }