1 /* $NetBSD: lm_isa.c,v 1.19 2008/03/05 15:41:31 xtraeme 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 1.19 2008/03/05 15:41:31 xtraeme 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 int lm_isa_match(device_t, cfdata_t, void *); 58 void lm_isa_attach(device_t, device_t, void *); 59 int lm_isa_detach(device_t, int); 60 61 uint8_t lm_isa_readreg(struct lm_softc *, int); 62 void lm_isa_writereg(struct lm_softc *, int, int); 63 64 CFATTACH_DECL_NEW(lm_isa, sizeof(struct lm_softc), 65 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 66 67 int 68 lm_isa_match(device_t parent, cfdata_t match, void *aux) 69 { 70 bus_space_handle_t ioh; 71 struct isa_attach_args *ia = aux; 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 rv = lm_probe(ia->ia_iot, ioh); 90 91 bus_space_unmap(ia->ia_iot, ioh, 8); 92 93 if (rv) { 94 ia->ia_nio = 1; 95 ia->ia_io[0].ir_size = 8; 96 97 ia->ia_niomem = 0; 98 ia->ia_nirq = 0; 99 ia->ia_ndrq = 0; 100 } 101 102 return rv; 103 } 104 105 106 void 107 lm_isa_attach(device_t parent, device_t self, void *aux) 108 { 109 struct lm_softc *lmsc = device_private(self); 110 struct isa_attach_args *ia = aux; 111 112 lmsc->lm_iot = ia->ia_iot; 113 114 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 115 &lmsc->lm_ioh)) { 116 aprint_error(": can't map i/o space\n"); 117 return; 118 } 119 120 /* Bus-independent attachment */ 121 lmsc->sc_dev = self; 122 lmsc->lm_writereg = lm_isa_writereg; 123 lmsc->lm_readreg = lm_isa_readreg; 124 125 lm_attach(lmsc); 126 } 127 128 int 129 lm_isa_detach(device_t self, int flags) 130 { 131 struct lm_softc *lmsc = device_private(self); 132 133 lm_detach(lmsc); 134 bus_space_unmap(lmsc->lm_iot, lmsc->lm_ioh, 8); 135 return 0; 136 } 137 138 uint8_t 139 lm_isa_readreg(struct lm_softc *sc, int reg) 140 { 141 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 142 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 143 } 144 145 146 void 147 lm_isa_writereg(struct lm_softc *sc, int reg, int val) 148 { 149 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 150 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val); 151 } 152 153