1 /* $NetBSD: lm_isa.c,v 1.18 2007/10/19 12:00:20 ad 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.18 2007/10/19 12:00:20 ad Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <sys/conf.h> 47 48 #include <sys/bus.h> 49 50 #include <dev/isa/isareg.h> 51 #include <dev/isa/isavar.h> 52 53 #include <dev/sysmon/sysmonvar.h> 54 55 #include <dev/ic/nslm7xvar.h> 56 57 #if defined(LMDEBUG) 58 #define DPRINTF(x) do { printf x; } while (0) 59 #else 60 #define DPRINTF(x) 61 #endif 62 63 64 int lm_isa_match(struct device *, struct cfdata *, void *); 65 void lm_isa_attach(struct device *, struct device *, void *); 66 int lm_isa_detach(struct device *, int); 67 uint8_t lm_isa_readreg(struct lm_softc *, int); 68 void lm_isa_writereg(struct lm_softc *, int, int); 69 70 CFATTACH_DECL(lm_isa, sizeof(struct lm_softc), 71 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 72 73 int 74 lm_isa_match(struct device *parent, struct cfdata *match, void *aux) 75 { 76 bus_space_handle_t ioh; 77 struct isa_attach_args *ia = aux; 78 int rv; 79 80 /* Must supply an address */ 81 if (ia->ia_nio < 1) 82 return 0; 83 84 if (ISA_DIRECT_CONFIG(ia)) 85 return 0; 86 87 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 88 return 0; 89 90 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh)) 91 return 0; 92 93 94 /* Bus independent probe */ 95 rv = lm_probe(ia->ia_iot, ioh); 96 97 bus_space_unmap(ia->ia_iot, ioh, 8); 98 99 if (rv) { 100 ia->ia_nio = 1; 101 ia->ia_io[0].ir_size = 8; 102 103 ia->ia_niomem = 0; 104 ia->ia_nirq = 0; 105 ia->ia_ndrq = 0; 106 } 107 108 return rv; 109 } 110 111 112 void 113 lm_isa_attach(struct device *parent, struct device *self, void *aux) 114 { 115 struct lm_softc *lmsc = (void *)self; 116 struct isa_attach_args *ia = aux; 117 118 lmsc->lm_iot = ia->ia_iot; 119 120 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 121 &lmsc->lm_ioh)) { 122 aprint_error(": can't map i/o space\n"); 123 return; 124 } 125 126 /* Bus-independent attachment */ 127 lmsc->lm_writereg = lm_isa_writereg; 128 lmsc->lm_readreg = lm_isa_readreg; 129 130 lm_attach(lmsc); 131 } 132 133 134 uint8_t 135 lm_isa_readreg(struct lm_softc *sc, int reg) 136 { 137 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 138 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 139 } 140 141 142 void 143 lm_isa_writereg(struct lm_softc *sc, int reg, int val) 144 { 145 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 146 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val); 147 } 148 149 int 150 lm_isa_detach(struct device *self, int flags) 151 { 152 struct lm_softc *lmsc = device_private(self); 153 154 lm_detach(lmsc); 155 bus_space_unmap(lmsc->lm_iot, lmsc->lm_ioh, 8); 156 return 0; 157 } 158