Home | History | Annotate | Line # | Download | only in vr
cmu.c revision 1.1 
      1 /*	$NetBSD: cmu.c,v 1.1 1999/09/16 12:23:31 takemura Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 SASAKI Takesi
      5  * Copyright (c) 1999 PocketBSD Project. All rights reserved.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the PocketBSD project
     19  *	and its contributors.
     20  * 4. Neither the name of the project 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  */
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <mips/cpuregs.h>
     42 
     43 #include <machine/bus.h>
     44 
     45 #include <hpcmips/vr/vr.h>
     46 #include <hpcmips/vr/vripvar.h>
     47 
     48 #include <hpcmips/vr/cmureg.h>
     49 
     50 struct vrcmu_softc {
     51 	struct device sc_dev;
     52 	bus_space_tag_t sc_iot;
     53 	bus_space_handle_t sc_ioh;
     54 };
     55 
     56 int  vrcmu_match __P((struct device *, struct cfdata *, void *));
     57 void vrcmu_attach __P((struct device *, struct device *, void *));
     58 
     59 int  vrcmu_supply __P((vrcmu_chipset_tag_t, u_int16_t, int));
     60 
     61 struct vrcmu_function_tag vrcmu_functions  = {
     62 	vrcmu_supply
     63 };
     64 
     65 struct cfattach vrcmu_ca = {
     66 	sizeof(struct vrcmu_softc), vrcmu_match, vrcmu_attach
     67 };
     68 
     69 int
     70 vrcmu_match(parent, cf, aux)
     71 	struct device *parent;
     72 	struct cfdata *cf;
     73 	void *aux;
     74 {
     75 	return 2; /* 1st attach group of vrip */
     76 }
     77 
     78 void
     79 vrcmu_attach(parent, self, aux)
     80 	struct device *parent;
     81 	struct device *self;
     82 	void *aux;
     83 {
     84 	struct vrip_attach_args *va = aux;
     85 	struct vrcmu_softc *sc = (void*)self;
     86 
     87 	sc->sc_iot = va->va_iot;
     88 	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
     89 			  0 /* no flags */, &sc->sc_ioh)) {
     90 		printf("vrcmu_attach: can't map i/o space\n");
     91 		return;
     92 	}
     93 	vrip_cmu_function_register(va->va_vc, &vrcmu_functions, self);
     94 	printf ("\n");
     95 }
     96 
     97 /* For serial console */
     98 void
     99 __vrcmu_supply(mask, onoff)
    100 	u_int16_t mask;
    101 	int onoff;
    102 {
    103 	u_int16_t reg;
    104 	u_int32_t addr;
    105 	addr = MIPS_PHYS_TO_KSEG1(VRIP_CMU_ADDR);
    106 	reg = *((volatile u_int16_t*)addr);
    107 	if (onoff)
    108 		reg |= mask;
    109 	else
    110 		reg &= ~mask;
    111 	*((volatile u_int16_t*)addr) = reg;
    112 }
    113 
    114 
    115 int
    116 vrcmu_supply(cc, mask, onoff)
    117 	vrcmu_chipset_tag_t cc;
    118 	u_int16_t mask;
    119 	int onoff;
    120 {
    121 	struct vrcmu_softc *sc = (void*)cc;
    122 	u_int16_t reg;
    123 
    124 	reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
    125 #ifdef VRCMU_VERBOSE
    126 	printf("cmu register(enter):");
    127 	bitdisp16(reg);
    128 #endif
    129 	if (onoff)
    130 		reg |= mask;
    131 	else
    132 		reg &= ~mask;
    133 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg);
    134 #ifdef VRCMU_VERBOSE
    135 	printf("cmu register(exit) :");
    136 	bitdisp16(reg);
    137 #endif
    138 	return 0;
    139 }
    140 
    141