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attimer_isa.c revision 1.9 
      1 /*	$NetBSD: attimer_isa.c,v 1.9 2008/01/03 01:21:45 dyoung 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  *  3. Neither the name of The NetBSD Foundation nor the names of its
     16  *     contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     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 /*
     33  * Copyright (c) 1996 Carnegie-Mellon University.
     34  * All rights reserved.
     35  *
     36  * Author: Chris G. Demetriou
     37  *
     38  * Permission to use, copy, modify and distribute this software and
     39  * its documentation is hereby granted, provided that both the copyright
     40  * notice and this permission notice appear in all copies of the
     41  * software, derivative works or modified versions, and any portions
     42  * thereof, and that both notices appear in supporting documentation.
     43  *
     44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     46  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     47  *
     48  * Carnegie Mellon requests users of this software to return to
     49  *
     50  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     51  *  School of Computer Science
     52  *  Carnegie Mellon University
     53  *  Pittsburgh PA 15213-3890
     54  *
     55  * any improvements or extensions that they make and grant Carnegie the
     56  * rights to redistribute these changes.
     57  */
     58 
     59 /*
     60  * ISA attachment for attimer(4)
     61  */
     62 
     63 #include <sys/cdefs.h>
     64 __KERNEL_RCSID(0, "$NetBSD: attimer_isa.c,v 1.9 2008/01/03 01:21:45 dyoung Exp $");
     65 
     66 #include <sys/param.h>
     67 #include <sys/systm.h>
     68 #include <sys/errno.h>
     69 #include <sys/ioctl.h>
     70 #include <sys/device.h>
     71 #include <sys/proc.h>
     72 
     73 #include <sys/bus.h>
     74 
     75 #include <dev/ic/attimervar.h>
     76 
     77 #include <dev/isa/isareg.h>
     78 #include <dev/isa/isavar.h>
     79 
     80 static int	attimer_isa_match(device_t, struct cfdata *, void *);
     81 static void	attimer_isa_attach(device_t, device_t, void *);
     82 
     83 CFATTACH_DECL(attimer_isa, sizeof(struct attimer_softc),
     84     attimer_isa_match, attimer_isa_attach, attimer_detach, NULL);
     85 
     86 static int
     87 attimer_isa_match(device_t parent, struct cfdata *match, void *aux)
     88 {
     89 	struct isa_attach_args *ia = aux;
     90 	bus_space_handle_t att_ioh;
     91 
     92 	if (ISA_DIRECT_CONFIG(ia))
     93 		return (0);
     94 
     95 	/* If values are hardwired to something that they can't be, punt. */
     96 	if (ia->ia_nio < 1 ||
     97 	    (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
     98 	    ia->ia_io[0].ir_addr != IO_TIMER1))
     99 		return (0);
    100 
    101 	if (ia->ia_niomem > 0 &&
    102 	    (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
    103 		return (0);
    104 
    105 	if (ia->ia_nirq > 0 &&
    106 	    (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ))
    107 		return (0);
    108 
    109 	if (ia->ia_ndrq > 0 &&
    110 	    (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
    111 		return (0);
    112 
    113 	if (bus_space_map(ia->ia_iot, IO_TIMER1, 4, 0, &att_ioh))
    114 		return 0;
    115 	bus_space_unmap(ia->ia_iot, att_ioh, 4);
    116 
    117 	ia->ia_io[0].ir_addr = IO_TIMER1;
    118 	ia->ia_io[0].ir_size = 4;
    119 	ia->ia_nio = 1;
    120 
    121 	ia->ia_niomem = 0;
    122 	ia->ia_nirq = 0;
    123 	ia->ia_ndrq = 0;
    124 
    125 	return 1;
    126 }
    127 
    128 static void
    129 attimer_isa_attach(device_t parent, device_t self, void *aux)
    130 {
    131 	struct attimer_softc *sc = device_private(self);
    132 	struct isa_attach_args *ia = aux;
    133 
    134 	sc->sc_iot = ia->ia_iot;
    135 
    136 	aprint_naive(": AT Timer\n");
    137 	aprint_normal(": AT Timer\n");
    138 
    139 	sc->sc_size = 4;
    140 	if (bus_space_map(sc->sc_iot, IO_TIMER1, sc->sc_size, 0,
    141 	                  &sc->sc_ioh) != 0)
    142 		aprint_error_dev(&sc->sc_dev, "could not map registers\n");
    143 	else
    144 		attimer_attach(sc);
    145 }
    146