mcclock_isa.c revision 1.5
1 /* $NetBSD: mcclock_isa.c,v 1.5 2003/07/15 00:04:47 lukem Exp $ */ 2 /* $OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $ */ 3 /* NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp */ 4 5 /* 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1992, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department and Ralph Campbell. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * from: Utah Hdr: clock.c 1.18 91/01/21 43 * 44 * @(#)clock.c 8.1 (Berkeley) 6/10/93 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: mcclock_isa.c,v 1.5 2003/07/15 00:04:47 lukem Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/device.h> 53 54 #include <machine/bus.h> 55 56 #include <dev/isa/isareg.h> 57 #include <dev/isa/isavar.h> 58 59 #include <dev/ic/mc146818reg.h> 60 61 #include <arc/dev/mcclockvar.h> 62 #include <arc/isa/mcclock_isavar.h> 63 64 int mcclock_isa_match __P((struct device *, struct cfdata *, void *)); 65 void mcclock_isa_attach __P((struct device *, struct device *, void *)); 66 67 CFATTACH_DECL(mcclock_isa, sizeof(struct mcclock_softc), 68 mcclock_isa_match, mcclock_isa_attach, NULL, NULL); 69 70 /* Deskstation clock access code */ 71 u_int mc_isa_read __P((struct mcclock_softc *, u_int)); 72 void mc_isa_write __P((struct mcclock_softc *, u_int, u_int)); 73 74 struct mcclock_busfns mcclock_isa_busfns = { 75 mc_isa_read, mc_isa_write 76 }; 77 78 int mcclock_isa_conf = 0; 79 80 int 81 mcclock_isa_match(parent, match, aux) 82 struct device *parent; 83 struct cfdata *match; 84 void *aux; 85 { 86 struct isa_attach_args *ia = aux; 87 bus_space_handle_t ioh; 88 89 if (ia->ia_nio < 1 || 90 (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT && 91 ia->ia_io[0].ir_addr != 0x70)) 92 return (0); 93 94 if (ia->ia_niomem > 0 && 95 (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT)) 96 return (0); 97 98 if (ia->ia_nirq > 0 && 99 (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT)) 100 return (0); 101 102 if (ia->ia_ndrq > 0 && 103 (ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT)) 104 return (0); 105 106 if (!mcclock_isa_conf) 107 return (0); 108 109 if (bus_space_map(ia->ia_iot, 0x70, 0x02, 0, &ioh)) 110 return (0); 111 112 bus_space_unmap(ia->ia_iot, ioh, 0x02); 113 114 ia->ia_nio = 1; 115 ia->ia_io[0].ir_addr = 0x70; 116 ia->ia_io[0].ir_size = 0x02; 117 118 ia->ia_niomem = 0; 119 ia->ia_nirq = 0; 120 ia->ia_ndrq = 0; 121 122 return (1); 123 } 124 125 void 126 mcclock_isa_attach(parent, self, aux) 127 struct device *parent; 128 struct device *self; 129 void *aux; 130 { 131 struct mcclock_softc *sc = (struct mcclock_softc *)self; 132 struct isa_attach_args *ia = aux; 133 134 sc->sc_iot = ia->ia_iot; 135 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 136 ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) 137 panic("mcclock_isa_attach: couldn't map clock I/O space"); 138 139 mcclock_attach(sc, &mcclock_isa_busfns, 80); 140 141 /* Turn interrupts off, just in case. */ 142 mc146818_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR); 143 } 144 145 u_int 146 mc_isa_read(sc, reg) 147 struct mcclock_softc *sc; 148 u_int reg; 149 { 150 151 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 0, reg); 152 return (bus_space_read_1(sc->sc_iot, sc->sc_ioh, 1)); 153 } 154 155 void 156 mc_isa_write(sc, reg, datum) 157 struct mcclock_softc *sc; 158 u_int reg, datum; 159 { 160 161 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 0, reg); 162 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 1, datum); 163 } 164 165
Indexes created Tue Oct 21 12:09:54 GMT 2025