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mkclock_ap.c revision 1.1 
      1 /*	$NetBSD: mkclock_ap.c,v 1.1 2003/10/25 04:07:28 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: mkclock_ap.c,v 1.1 2003/10/25 04:07:28 tsutsui Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/kernel.h>
     44 #include <sys/systm.h>
     45 #include <sys/device.h>
     46 
     47 #include <machine/cpu.h>
     48 #include <machine/bus.h>
     49 
     50 #include <dev/clock_subr.h>
     51 #include <dev/ic/mk48txxreg.h>
     52 
     53 #include <newsmips/apbus/apbusvar.h>
     54 
     55 #define MKCLOCK_AP_STRIDE	2
     56 #define MKCLOCK_AP_OFFSET	\
     57     ((MK48T02_CLKOFF + MK48TXX_ICSR) << MKCLOCK_AP_STRIDE)
     58 
     59 int  mkclock_ap_match(struct device *, struct cfdata  *, void *);
     60 void mkclock_ap_attach(struct device *, struct device *, void *);
     61 static u_int8_t mkclock_ap_nvrd(bus_space_tag_t bt, bus_space_handle_t, int);
     62 static void mkclock_ap_nvwr(bus_space_tag_t, bus_space_handle_t, int, u_int8_t);
     63 
     64 CFATTACH_DECL(mkclock_ap, sizeof(struct device),
     65     mkclock_ap_match, mkclock_ap_attach, NULL, NULL);
     66 
     67 extern struct cfdriver mkclock_cd;
     68 
     69 int
     70 mkclock_ap_match(parent, cf, aux)
     71 	struct device *parent;
     72 	struct cfdata *cf;
     73 	void *aux;
     74 {
     75 	struct apbus_attach_args *apa = aux;
     76 
     77 	if (strcmp("clock", apa->apa_name) != 0)
     78 		return 0;
     79 
     80 	return 1;
     81 }
     82 
     83 void
     84 mkclock_ap_attach(parent, self, aux)
     85 	struct device *parent, *self;
     86 	void *aux;
     87 {
     88 	struct apbus_attach_args *apa = aux;
     89 	bus_space_tag_t bst;
     90 	bus_space_handle_t bsh;
     91 	todr_chip_handle_t handle;
     92 
     93 	printf(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
     94 	if (bus_space_map(bst, apa->apa_hwbase - MKCLOCK_AP_OFFSET,
     95 	    MK48T02_CLKSZ, 0, &bsh) != 0)
     96 		printf("can't map device space\n");
     97 
     98 	handle = mk48txx_attach(bst, bsh, "mk48t02", 1900,
     99 	    mkclock_ap_nvrd, mkclock_ap_nvwr);
    100 	if (handle == NULL)
    101 		panic("can't attach tod clock");
    102 
    103 	printf("\n");
    104 
    105 	handle->bus_cookie = NULL;
    106 	handle->todr_setwen = NULL;
    107 
    108         todr_attach(handle);
    109 }
    110 
    111 static u_int8_t
    112 mkclock_ap_nvrd(bt, bh, off)
    113 	bus_space_tag_t bt;
    114 	bus_space_handle_t bh;
    115 	int off;
    116 {
    117 	u_int8_t rv;
    118 
    119 	rv = bus_space_read_4(bt, bh, off << MKCLOCK_AP_STRIDE);
    120 	return rv;
    121 }
    122 
    123 static void
    124 mkclock_ap_nvwr(bt, bh, off, v)
    125 	bus_space_tag_t bt;
    126 	bus_space_handle_t bh;
    127 	int off;
    128 	u_int8_t v;
    129 {
    130 
    131 	bus_space_write_4(bt, bh, off << MKCLOCK_AP_STRIDE, v);
    132 }
    133