mcclock_isa.c revision 1.13
1 /* $NetBSD: mcclock_isa.c,v 1.13 2008/03/29 05:42:45 tsutsui 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) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department and Ralph Campbell. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: Utah Hdr: clock.c 1.18 91/01/21 38 * 39 * @(#)clock.c 8.1 (Berkeley) 6/10/93 40 */ 41 /* 42 * Copyright (c) 1988 University of Utah. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * the Systems Programming Group of the University of Utah Computer 46 * Science Department and Ralph Campbell. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * from: Utah Hdr: clock.c 1.18 91/01/21 77 * 78 * @(#)clock.c 8.1 (Berkeley) 6/10/93 79 */ 80 81 #include <sys/cdefs.h> 82 __KERNEL_RCSID(0, "$NetBSD: mcclock_isa.c,v 1.13 2008/03/29 05:42:45 tsutsui Exp $"); 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/device.h> 87 88 #include <machine/bus.h> 89 90 #include <dev/isa/isareg.h> 91 #include <dev/isa/isavar.h> 92 93 #include <dev/clock_subr.h> 94 95 #include <dev/ic/mc146818reg.h> 96 #include <dev/ic/mc146818var.h> 97 98 #include <arc/isa/mcclock_isavar.h> 99 100 int mcclock_isa_match(device_t, cfdata_t, void *); 101 void mcclock_isa_attach(device_t, device_t, void *); 102 103 CFATTACH_DECL_NEW(mcclock_isa, sizeof(struct mc146818_softc), 104 mcclock_isa_match, mcclock_isa_attach, NULL, NULL); 105 106 /* Deskstation clock access code */ 107 static u_int mc_isa_read(struct mc146818_softc *, u_int); 108 static void mc_isa_write(struct mc146818_softc *, u_int, u_int); 109 110 int mcclock_isa_conf = 0; 111 112 int 113 mcclock_isa_match(device_t parent, cfdata_t cf, void *aux) 114 { 115 struct isa_attach_args *ia = aux; 116 bus_space_handle_t ioh; 117 118 if (ia->ia_nio < 1 || 119 (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 120 ia->ia_io[0].ir_addr != 0x70)) 121 return 0; 122 123 if (ia->ia_niomem > 0 && 124 (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM)) 125 return 0; 126 127 if (ia->ia_nirq > 0 && 128 (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ)) 129 return 0; 130 131 if (ia->ia_ndrq > 0 && 132 (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ)) 133 return 0; 134 135 if (!mcclock_isa_conf) 136 return 0; 137 138 if (bus_space_map(ia->ia_iot, 0x70, 0x02, 0, &ioh)) 139 return 0; 140 141 bus_space_unmap(ia->ia_iot, ioh, 0x02); 142 143 ia->ia_nio = 1; 144 ia->ia_io[0].ir_addr = 0x70; 145 ia->ia_io[0].ir_size = 0x02; 146 147 ia->ia_niomem = 0; 148 ia->ia_nirq = 0; 149 ia->ia_ndrq = 0; 150 151 return 1; 152 } 153 154 void 155 mcclock_isa_attach(device_t parent, device_t self, void *aux) 156 { 157 struct mc146818_softc *sc = device_private(self); 158 struct isa_attach_args *ia = aux; 159 160 sc->sc_dev = self; 161 sc->sc_bst = ia->ia_iot; 162 if (bus_space_map(sc->sc_bst, ia->ia_io[0].ir_addr, 163 ia->ia_io[0].ir_size, 0, &sc->sc_bsh)) 164 panic("mcclock_isa_attach: couldn't map clock I/O space"); 165 166 sc->sc_year0 = 1980; 167 sc->sc_mcread = mc_isa_read; 168 sc->sc_mcwrite = mc_isa_write; 169 170 mc146818_attach(sc); 171 172 aprint_normal("\n"); 173 174 /* Turn interrupts off, just in case. */ 175 mc_isa_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR); 176 } 177 178 u_int 179 mc_isa_read(struct mc146818_softc *sc, u_int reg) 180 { 181 182 bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg); 183 return bus_space_read_1(sc->sc_bst, sc->sc_bsh, 1); 184 } 185 186 void 187 mc_isa_write(struct mc146818_softc *sc, u_int reg, u_int datum) 188 { 189 190 bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg); 191 bus_space_write_1(sc->sc_bst, sc->sc_bsh, 1, datum); 192 } 193 194
Indexes created Fri Sep 26 20:09:58 GMT 2025