1 /* $NetBSD: lm_isa.c,v 1.22 2008/10/12 23:07:32 pgoyette 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 1.22 2008/10/12 23:07:32 pgoyette 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 int 67 lm_isa_match(device_t parent, cfdata_t match, void *aux) 68 { 69 bus_space_handle_t ioh; 70 struct isa_attach_args *ia = aux; 71 struct lm_isa_softc sc; 72 int rv; 73 74 /* Must supply an address */ 75 if (ia->ia_nio < 1) 76 return 0; 77 78 if (ISA_DIRECT_CONFIG(ia)) 79 return 0; 80 81 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 82 return 0; 83 84 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh)) 85 return 0; 86 87 88 /* Bus independent probe */ 89 sc.lm_iot = ia->ia_iot; 90 sc.lm_ioh = ioh; 91 sc.lmsc.lm_writereg = lm_isa_writereg; 92 sc.lmsc.lm_readreg = lm_isa_readreg; 93 rv = lm_probe(&sc.lmsc); 94 95 bus_space_unmap(ia->ia_iot, ioh, 8); 96 97 if (rv) { 98 ia->ia_nio = 1; 99 ia->ia_io[0].ir_size = 8; 100 101 ia->ia_niomem = 0; 102 ia->ia_nirq = 0; 103 ia->ia_ndrq = 0; 104 } 105 106 return rv; 107 } 108 109 110 void 111 lm_isa_attach(device_t parent, device_t self, void *aux) 112 { 113 struct lm_isa_softc *sc = device_private(self); 114 struct isa_attach_args *ia = aux; 115 116 sc->lm_iot = ia->ia_iot; 117 118 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 119 &sc->lm_ioh)) { 120 aprint_error(": can't map i/o space\n"); 121 return; 122 } 123 124 /* Bus-independent attachment */ 125 sc->lmsc.sc_dev = self; 126 sc->lmsc.lm_writereg = lm_isa_writereg; 127 sc->lmsc.lm_readreg = lm_isa_readreg; 128 129 lm_attach(&sc->lmsc); 130 } 131 132 int 133 lm_isa_detach(device_t self, int flags) 134 { 135 struct lm_isa_softc *sc = device_private(self); 136 137 lm_detach(&sc->lmsc); 138 bus_space_unmap(sc->lm_iot, sc->lm_ioh, 8); 139 return 0; 140 } 141 142 uint8_t 143 lm_isa_readreg(struct lm_softc *lmsc, int reg) 144 { 145 struct lm_isa_softc *sc = (struct lm_isa_softc *)lmsc; 146 147 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 148 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 149 } 150 151 152 void 153 lm_isa_writereg(struct lm_softc *lmsc, int reg, int val) 154 { 155 struct lm_isa_softc *sc = (struct lm_isa_softc *)lmsc; 156 157 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 158 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val); 159 } 160 161