1 /* $NetBSD: lm_isa.c,v 1.20 2008/04/28 20:23:52 martin 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 1.20 2008/04/28 20:23:52 martin 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 CFATTACH_DECL_NEW(lm_isa, sizeof(struct lm_softc), 58 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 59 60 int 61 lm_isa_match(device_t parent, cfdata_t match, void *aux) 62 { 63 bus_space_handle_t ioh; 64 struct isa_attach_args *ia = aux; 65 int rv; 66 67 /* Must supply an address */ 68 if (ia->ia_nio < 1) 69 return 0; 70 71 if (ISA_DIRECT_CONFIG(ia)) 72 return 0; 73 74 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 75 return 0; 76 77 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh)) 78 return 0; 79 80 81 /* Bus independent probe */ 82 rv = lm_probe(ia->ia_iot, ioh); 83 84 bus_space_unmap(ia->ia_iot, ioh, 8); 85 86 if (rv) { 87 ia->ia_nio = 1; 88 ia->ia_io[0].ir_size = 8; 89 90 ia->ia_niomem = 0; 91 ia->ia_nirq = 0; 92 ia->ia_ndrq = 0; 93 } 94 95 return rv; 96 } 97 98 99 void 100 lm_isa_attach(device_t parent, device_t self, void *aux) 101 { 102 struct lm_softc *lmsc = device_private(self); 103 struct isa_attach_args *ia = aux; 104 105 lmsc->lm_iot = ia->ia_iot; 106 107 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 108 &lmsc->lm_ioh)) { 109 aprint_error(": can't map i/o space\n"); 110 return; 111 } 112 113 /* Bus-independent attachment */ 114 lmsc->sc_dev = self; 115 lmsc->lm_writereg = lm_isa_writereg; 116 lmsc->lm_readreg = lm_isa_readreg; 117 118 lm_attach(lmsc); 119 } 120 121 int 122 lm_isa_detach(device_t self, int flags) 123 { 124 struct lm_softc *lmsc = device_private(self); 125 126 lm_detach(lmsc); 127 bus_space_unmap(lmsc->lm_iot, lmsc->lm_ioh, 8); 128 return 0; 129 } 130 131 uint8_t 132 lm_isa_readreg(struct lm_softc *sc, int reg) 133 { 134 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 135 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 136 } 137 138 139 void 140 lm_isa_writereg(struct lm_softc *sc, int reg, int val) 141 { 142 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 143 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val); 144 } 145 146