dpt_eisa.c

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    1 /*      $NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej 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 1.24 2021/01/27 04:35:15 thorpej 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_NEW(dpt_eisa, sizeof(struct dpt_softc),
   65     dpt_eisa_match, dpt_eisa_attach, NULL, NULL);
   66 
   67 static const struct device_compatible_entry compat_data[] = {
   68         { .compat = "DPT2402" },
   69         { .compat = "DPTA401" },
   70         { .compat = "DPTA402" },
   71         { .compat = "DPTA410" },
   72         { .compat = "DPTA411" },
   73         { .compat = "DPTA412" },
   74         { .compat = "DPTA420" },
   75         { .compat = "DPTA501" },
   76         { .compat = "DPTA502" },
   77         { .compat = "DPTA701" },
   78         { .compat = "DPTBC01" },
   79         { .compat = "NEC8200" },        /* OEM */
   80         { .compat = "ATT2408" },        /* OEM */
   81         DEVICE_COMPAT_EOL
   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, void *aux)
  107 {
  108         struct eisa_attach_args *ea = aux;
  109 
  110         return eisa_compatible_match(ea, compat_data);
  111 }
  112 
  113 static void
  114 dpt_eisa_attach(device_t parent, device_t self, void *aux)
  115 {
  116         struct eisa_attach_args *ea;
  117         bus_space_handle_t ioh;
  118         eisa_chipset_tag_t ec;
  119         eisa_intr_handle_t ih;
  120         struct dpt_softc *sc;
  121         bus_space_tag_t iot;
  122         const char *intrstr;
  123         int irq;
  124         char intrbuf[EISA_INTRSTR_LEN];
  125 
  126         ea = aux;
  127         sc = device_private(self);
  128         sc->sc_dev = self;
  129         iot = ea->ea_iot;
  130         ec = ea->ea_ec;
  131 
  132         printf(": ");
  133 
  134         if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
  135             DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
  136                 aprint_error("can't map i/o space\n");
  137                 return;
  138         }
  139 
  140         sc->sc_iot = iot;
  141         sc->sc_ioh = ioh;
  142         sc->sc_dmat = ea->ea_dmat;
  143 
  144         /* Map and establish the interrupt. */
  145         if (dpt_eisa_irq(iot, ioh, &irq)) {
  146                 aprint_error("HBA on invalid IRQ\n");
  147                 return;
  148         }
  149 
  150         if (eisa_intr_map(ec, irq, &ih)) {
  151                 aprint_error("can't map interrupt (%d)\n", irq);
  152                 return;
  153         }
  154 
  155         intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
  156         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
  157             dpt_intr, sc);
  158         if (sc->sc_ih == NULL) {
  159                 aprint_error("can't establish interrupt");
  160                 if (intrstr != NULL)
  161                         aprint_error(" at %s", intrstr);
  162                 aprint_error("\n");
  163                 return;
  164         }
  165 
  166         /* Read the EATA configuration. */
  167         if (dpt_readcfg(sc)) {
  168                 aprint_error_dev(sc->sc_dev, "readcfg failed - see dpt(4)\n");
  169                 return;
  170         }
  171 
  172         sc->sc_bustype = SI_EISA_BUS;
  173         sc->sc_isaport =  EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
  174         sc->sc_isairq = irq;
  175 
  176         /* Now attach to the bus-independent code. */
  177         dpt_init(sc, intrstr);
  178 }

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

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sys/dev/eisa/dpt_eisa.c