Home | History | Annotate | Line # | Download | only in dev 
      1 /*	$NetBSD: a2kbbc.c,v 1.26 2013/01/27 19:58:04 rkujawa Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  * from: Utah $Hdr: clock.c 1.18 91/01/21$
     37  *
     38  *	@(#)clock.c	7.6 (Berkeley) 5/7/91
     39  */
     40 
     41 #include <sys/cdefs.h>
     42 __KERNEL_RCSID(0, "$NetBSD: a2kbbc.c,v 1.26 2013/01/27 19:58:04 rkujawa Exp $");
     43 
     44 #include <sys/param.h>
     45 #include <sys/kernel.h>
     46 #include <sys/device.h>
     47 #include <sys/systm.h>
     48 #include <sys/bus.h>
     49 #include <machine/psl.h>
     50 #include <machine/cpu.h>
     51 #include <amiga/amiga/device.h>
     52 #include <amiga/amiga/custom.h>
     53 #include <amiga/amiga/cia.h>
     54 #include <amiga/dev/zbusvar.h>
     55 
     56 #include <dev/clock_subr.h>
     57 
     58 #include <dev/ic/msm6242bvar.h>
     59 #include <dev/ic/msm6242breg.h>
     60 
     61 #define	A2KBBC_ADDR	0xDC0000	/* XXX: possible D80000 on A2000 "A"? */
     62 
     63 static int a2kbbc_match(device_t, cfdata_t, void *);
     64 static void a2kbbc_attach(device_t, device_t, void *);
     65 
     66 struct a2kbbc_softc {
     67 	struct msm6242b_softc sc_msm6242b;
     68 	struct bus_space_tag sc_bst;
     69 };
     70 
     71 CFATTACH_DECL_NEW(a2kbbc, sizeof(struct a2kbbc_softc),
     72     a2kbbc_match, a2kbbc_attach, NULL, NULL);
     73 
     74 static int
     75 a2kbbc_match(device_t parent, cfdata_t cf, void *aux)
     76 {
     77 	static int a2kbbc_matched = 0;
     78 
     79 	if (!matchname("a2kbbc", aux))
     80 		return (0);
     81 
     82 	/* Allow only one instance. */
     83 	if (a2kbbc_matched)
     84 		return (0);
     85 
     86 	if (/* is_a1200() || */ is_a3000() || is_a4000()
     87 #ifdef DRACO
     88 	    || is_draco()
     89 #endif
     90 	    )
     91 		return (0);
     92 
     93 	a2kbbc_matched = 1;
     94 	return (1);
     95 }
     96 
     97 /*
     98  * Attach us to the rtc function pointers.
     99  */
    100 void
    101 a2kbbc_attach(device_t parent, device_t self, void *aux)
    102 {
    103 	struct a2kbbc_softc *sc;
    104 	struct msm6242b_softc *msc;
    105 
    106 	sc = device_private(self);
    107 	msc = &sc->sc_msm6242b;
    108 	msc->sc_dev = self;
    109 
    110 	sc->sc_bst.base = (bus_addr_t) __UNVOLATILE(ztwomap(A2KBBC_ADDR+1));
    111 	sc->sc_bst.absm = &amiga_bus_stride_4;
    112 
    113 	msc->sc_iot = &sc->sc_bst;
    114 
    115 	if (bus_space_map(msc->sc_iot, 0, MSM6242B_SIZE, 0, &msc->sc_ioh)) {
    116 		aprint_error_dev(msc->sc_dev, "couldn't map registers\n");
    117 		return;
    118 	}
    119 
    120 	msm6242b_attach(msc);
    121 }
    122 
    123 
    124