sys/arch/x68k/dev/spc.c

   1 /*      $NetBSD: spc.c,v 1.34 2008/04/28 20:23:39 martin 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 Jarle Greipsland, Charles M. Hannum and Masaru Oki.
   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: spc.c,v 1.34 2008/04/28 20:23:39 martin Exp $");
  34
  35 #include "opt_ddb.h"
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/device.h>
  41
  42 #include <machine/bus.h>
  43 #include <machine/cpu.h>
  44
  45 #include <dev/scsipi/scsi_all.h>
  46 #include <dev/scsipi/scsipi_all.h>
  47 #include <dev/scsipi/scsiconf.h>
  48
  49 #include <arch/x68k/dev/intiovar.h>
  50 #include <arch/x68k/dev/scsiromvar.h>
  51 #include <arch/x68k/x68k/iodevice.h>
  52
  53 #include <dev/ic/mb89352var.h>
  54 #include <dev/ic/mb89352reg.h>
  55
  56 static int spc_intio_match(device_t, cfdata_t, void *);
  57 static void spc_intio_attach(device_t, device_t, void *);
  58
  59 CFATTACH_DECL_NEW(spc_intio, sizeof(struct spc_softc),
  60     spc_intio_match, spc_intio_attach, NULL, NULL);
  61
  62 static int
  63 spc_intio_match(device_t parent, cfdata_t cf, void *aux)
  64 {
  65         struct intio_attach_args *ia = aux;
  66         bus_space_tag_t iot = ia->ia_bst;
  67         bus_space_handle_t ioh;
  68
  69         ia->ia_size = 0x20;
  70
  71         if (intio_map_allocate_region(device_parent(parent), ia,
  72                                       INTIO_MAP_TESTONLY) < 0)
  73                 return 0;
  74
  75         if (bus_space_map(iot, ia->ia_addr, 0x20, BUS_SPACE_MAP_SHIFTED,
  76                           &ioh) < 0)
  77                 return 0;
  78         if (badaddr((void *)IIOV(ia->ia_addr + BDID)))
  79                 return 0;
  80         bus_space_unmap(iot, ioh, 0x20);
  81
  82         return 1;
  83 }
  84
  85 static void
  86 spc_intio_attach(device_t parent, device_t self, void *aux)
  87 {
  88         struct spc_softc *sc = device_private(self);
  89         struct intio_attach_args *ia = aux;
  90         bus_space_tag_t iot = ia->ia_bst;
  91         bus_space_handle_t ioh;
  92
  93         sc->sc_dev = self;
  94
  95         intio_map_allocate_region(device_parent(parent), ia,
  96                                   INTIO_MAP_ALLOCATE);
  97         if (bus_space_map(iot, ia->ia_addr, 0x20, BUS_SPACE_MAP_SHIFTED,
  98                           &ioh)) {
  99                 aprint_error(": can't map i/o space\n");
 100                 return;
 101         }
 102         aprint_normal("\n");
 103
 104         sc->sc_iot = iot;
 105         sc->sc_ioh = ioh;
 106         sc->sc_initiator = IODEVbase->io_sram[0x70] & 0x7; /* XXX */
 107
 108         if (intio_intr_establish(ia->ia_intr, "spc", spc_intr, sc))
 109                 panic("spcattach: interrupt vector busy");
 110
 111         spc_attach(sc);
 112 }