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      1 /*	$NetBSD: attimer_isa.c,v 1.13 2009/08/23 16:02:53 jmcneill 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 (at) 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 1.13 2009/08/23 16:02:53 jmcneill 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 }
    144