1 /* $NetBSD: lm_isa.c,v 1.23 2010/02/21 05:16:29 cnst Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bill Squier. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.23 2010/02/21 05:16:29 cnst Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/conf.h> 40 41 #include <sys/bus.h> 42 43 #include <dev/isa/isareg.h> 44 #include <dev/isa/isavar.h> 45 46 #include <dev/sysmon/sysmonvar.h> 47 48 #include <dev/ic/nslm7xvar.h> 49 50 int lm_isa_match(device_t, cfdata_t, void *); 51 void lm_isa_attach(device_t, device_t, void *); 52 int lm_isa_detach(device_t, int); 53 54 uint8_t lm_isa_readreg(struct lm_softc *, int); 55 void lm_isa_writereg(struct lm_softc *, int, int); 56 57 struct lm_isa_softc { 58 struct lm_softc lmsc; 59 bus_space_tag_t lm_iot; 60 bus_space_handle_t lm_ioh; 61 }; 62 63 CFATTACH_DECL_NEW(lm_isa, sizeof(struct lm_isa_softc), 64 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 65 66 CFATTACH_DECL_NEW(lm_wbsio, sizeof(struct lm_isa_softc), 67 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 68 69 int 70 lm_isa_match(device_t parent, cfdata_t match, void *aux) 71 { 72 bus_space_handle_t ioh; 73 struct isa_attach_args *ia = aux; 74 struct lm_isa_softc sc; 75 int rv; 76 77 /* Must supply an address */ 78 if (ia->ia_nio < 1) 79 return 0; 80 81 if (ISA_DIRECT_CONFIG(ia)) 82 return 0; 83 84 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 85 return 0; 86 87 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh)) 88 return 0; 89 90 91 /* Bus independent probe */ 92 sc.lm_iot = ia->ia_iot; 93 sc.lm_ioh = ioh; 94 sc.lmsc.lm_writereg = lm_isa_writereg; 95 sc.lmsc.lm_readreg = lm_isa_readreg; 96 rv = lm_probe(&sc.lmsc); 97 98 bus_space_unmap(ia->ia_iot, ioh, 8); 99 100 if (rv) { 101 ia->ia_nio = 1; 102 ia->ia_io[0].ir_size = 8; 103 104 ia->ia_niomem = 0; 105 ia->ia_nirq = 0; 106 ia->ia_ndrq = 0; 107 } 108 109 return rv; 110 } 111 112 113 void 114 lm_isa_attach(device_t parent, device_t self, void *aux) 115 { 116 struct lm_isa_softc *sc = device_private(self); 117 struct isa_attach_args *ia = aux; 118 119 sc->lm_iot = ia->ia_iot; 120 121 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 122 &sc->lm_ioh)) { 123 aprint_error(": can't map i/o space\n"); 124 return; 125 } 126 127 /* Bus-independent attachment */ 128 sc->lmsc.sc_dev = self; 129 sc->lmsc.lm_writereg = lm_isa_writereg; 130 sc->lmsc.lm_readreg = lm_isa_readreg; 131 132 lm_attach(&sc->lmsc); 133 } 134 135 int 136 lm_isa_detach(device_t self, int flags) 137 { 138 struct lm_isa_softc *sc = device_private(self); 139 140 lm_detach(&sc->lmsc); 141 bus_space_unmap(sc->lm_iot, sc->lm_ioh, 8); 142 return 0; 143 } 144 145 uint8_t 146 lm_isa_readreg(struct lm_softc *lmsc, int reg) 147 { 148 struct lm_isa_softc *sc = (struct lm_isa_softc *)lmsc; 149 150 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 151 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 152 } 153 154 155 void 156 lm_isa_writereg(struct lm_softc *lmsc, int reg, int val) 157 { 158 struct lm_isa_softc *sc = (struct lm_isa_softc *)lmsc; 159 160 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 161 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val); 162 } 163 164