The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: dpt_eisa.c,v 1.12 2005/02/27 00:26:59 perry 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 1.12 2005/02/27 00:26:59 perry 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 <machine/bus.h>
   43 #include <machine/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(struct device *, struct device *, void *);
   61 static int      dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
   62 static int      dpt_eisa_match(struct device *, struct cfdata *, 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(struct device *parent, struct cfdata *match, void *aux)
  107 {
  108         struct eisa_attach_args *ea;
  109         int i;
  110 
  111         ea = aux;
  112 
  113         for (i = 0; dpt_eisa_boards[i] != NULL; i++)
  114                 if (strcmp(ea->ea_idstring, dpt_eisa_boards[i]) == 0)
  115                         break;
  116 
  117         return (dpt_eisa_boards[i] != NULL);
  118 }
  119 
  120 static void
  121 dpt_eisa_attach(struct device *parent, struct device *self, void *aux)
  122 {
  123         struct eisa_attach_args *ea;
  124         bus_space_handle_t ioh;
  125         eisa_chipset_tag_t ec;
  126         eisa_intr_handle_t ih;
  127         struct dpt_softc *sc;
  128         bus_space_tag_t iot;
  129         const char *intrstr;
  130         int irq;
  131 
  132         ea = aux;
  133         sc = (struct dpt_softc *)self;
  134         iot = ea->ea_iot;
  135         ec = ea->ea_ec;
  136 
  137         printf(": ");
  138 
  139         if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
  140             DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
  141                 printf("can't map i/o space\n");
  142                 return;
  143         }
  144 
  145         sc->sc_iot = iot;
  146         sc->sc_ioh = ioh;
  147         sc->sc_dmat = ea->ea_dmat;
  148 
  149         /* Map and establish the interrupt. */
  150         if (dpt_eisa_irq(iot, ioh, &irq)) {
  151                 printf("HBA on invalid IRQ\n");
  152                 return;
  153         }
  154 
  155         if (eisa_intr_map(ec, irq, &ih)) {
  156                 printf("can't map interrupt (%d)\n", irq);
  157                 return;
  158         }
  159 
  160         intrstr = eisa_intr_string(ec, ih);
  161         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
  162             dpt_intr, sc);
  163         if (sc->sc_ih == NULL) {
  164                 printf("can't establish interrupt");
  165                 if (intrstr != NULL)
  166                         printf(" at %s", intrstr);
  167                 printf("\n");
  168                 return;
  169         }
  170 
  171         /* Read the EATA configuration. */
  172         if (dpt_readcfg(sc)) {
  173                 printf("%s: readcfg failed - see dpt(4)\n",
  174                     sc->sc_dv.dv_xname);
  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 }

Cache object: 23d9f80ad2ab9149c97351d395c974d3


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