sys/dev/isa/attimer_isa.c

   1 /*      $NetBSD: attimer_isa.c,v 1.12 2009/05/12 08:44:19 cegger Exp $  */
   2
   3 /*
   4  *  Copyright (c) 2005 The NetBSD Foundation.
   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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  *  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  *  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  *  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  *  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  *  POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /*
  30  * Copyright (c) 1996 Carnegie-Mellon University.
  31  * All rights reserved.
  32  *
  33  * Author: Chris G. Demetriou
  34  *
  35  * Permission to use, copy, modify and distribute this software and
  36  * its documentation is hereby granted, provided that both the copyright
  37  * notice and this permission notice appear in all copies of the
  38  * software, derivative works or modified versions, and any portions
  39  * thereof, and that both notices appear in supporting documentation.
  40  *
  41  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  42  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  43  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  44  *
  45  * Carnegie Mellon requests users of this software to return to
  46  *
  47  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  48  *  School of Computer Science
  49  *  Carnegie Mellon University
  50  *  Pittsburgh PA 15213-3890
  51  *
  52  * any improvements or extensions that they make and grant Carnegie the
  53  * rights to redistribute these changes.
  54  */
  55
  56 /*
  57  * ISA attachment for attimer(4)
  58  */
  59
  60 #include <sys/cdefs.h>
  61 __KERNEL_RCSID(0, "$NetBSD: attimer_isa.c,v 1.12 2009/05/12 08:44:19 cegger Exp $");
  62
  63 #include <sys/param.h>
  64 #include <sys/systm.h>
  65 #include <sys/errno.h>
  66 #include <sys/ioctl.h>
  67 #include <sys/device.h>
  68 #include <sys/proc.h>
  69
  70 #include <sys/bus.h>
  71
  72 #include <dev/ic/attimervar.h>
  73
  74 #include <dev/isa/isareg.h>
  75 #include <dev/isa/isavar.h>
  76
  77 static int      attimer_isa_match(device_t, cfdata_t, void *);
  78 static void     attimer_isa_attach(device_t, device_t, void *);
  79
  80 CFATTACH_DECL_NEW(attimer_isa, sizeof(struct attimer_softc),
  81     attimer_isa_match, attimer_isa_attach, attimer_detach, NULL);
  82
  83 static int
  84 attimer_isa_match(device_t parent, cfdata_t match, void *aux)
  85 {
  86         struct isa_attach_args *ia = aux;
  87         bus_space_handle_t att_ioh;
  88
  89         if (ISA_DIRECT_CONFIG(ia))
  90                 return (0);
  91
  92         /* If values are hardwired to something that they can't be, punt. */
  93         if (ia->ia_nio < 1 ||
  94             (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
  95             ia->ia_io[0].ir_addr != IO_TIMER1))
  96                 return (0);
  97
  98         if (ia->ia_niomem > 0 &&
  99             (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
 100                 return (0);
 101
 102         if (ia->ia_nirq > 0 &&
 103             (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ))
 104                 return (0);
 105
 106         if (ia->ia_ndrq > 0 &&
 107             (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
 108                 return (0);
 109
 110         if (bus_space_map(ia->ia_iot, IO_TIMER1, 4, 0, &att_ioh))
 111                 return 0;
 112         bus_space_unmap(ia->ia_iot, att_ioh, 4);
 113
 114         ia->ia_io[0].ir_addr = IO_TIMER1;
 115         ia->ia_io[0].ir_size = 4;
 116         ia->ia_nio = 1;
 117
 118         ia->ia_niomem = 0;
 119         ia->ia_nirq = 0;
 120         ia->ia_ndrq = 0;
 121
 122         return 1;
 123 }
 124
 125 static void
 126 attimer_isa_attach(device_t parent, device_t self, void *aux)
 127 {
 128         struct attimer_softc *sc = device_private(self);
 129         struct isa_attach_args *ia = aux;
 130
 131         sc->sc_dev = self;
 132         sc->sc_iot = ia->ia_iot;
 133
 134         aprint_naive("\n");
 135         aprint_normal("\n");
 136
 137         sc->sc_size = 4;
 138         if (bus_space_map(sc->sc_iot, IO_TIMER1, sc->sc_size, 0,
 139                           &sc->sc_ioh) != 0)
 140                 aprint_error_dev(self, "could not map registers\n");
 141         else
 142                 attimer_attach(sc);
 143 }