lm_isa_common.c revision 1.1
1/* $NetBSD: lm_isa_common.c,v 1.1 2012/01/17 16:50:07 jakllsch 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_common.c,v 1.1 2012/01/17 16:50:07 jakllsch 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/module.h> 40#include <sys/conf.h> 41 42#include <sys/bus.h> 43 44#include <dev/isa/isareg.h> 45#include <dev/isa/isavar.h> 46 47#include <dev/ic/nslm7xvar.h> 48 49int lm_isa_match(device_t, cfdata_t, void *); 50void lm_isa_attach(device_t, device_t, void *); 51int lm_isa_detach(device_t, int); 52 53static uint8_t lm_isa_readreg(struct lm_softc *, int); 54static void lm_isa_writereg(struct lm_softc *, int, int); 55 56struct lm_isa_softc { 57 struct lm_softc lmsc; 58 bus_space_tag_t lm_iot; 59 bus_space_handle_t lm_ioh; 60}; 61 62#if 0 63CFATTACH_DECL_NEW(lm_isa, sizeof(struct lm_isa_softc), 64 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 65 66CFATTACH_DECL_NEW(lm_wbsio, sizeof(struct lm_isa_softc), 67 lm_isa_match, lm_isa_attach, lm_isa_detach, NULL); 68#endif 69 70int 71lm_isa_match(device_t parent, cfdata_t match, void *aux) 72{ 73 bus_space_handle_t ioh; 74 struct isa_attach_args *ia = aux; 75 struct lm_isa_softc sc; 76 int rv; 77 78 /* Must supply an address */ 79 if (ia->ia_nio < 1) 80 return 0; 81 82 if (ISA_DIRECT_CONFIG(ia)) 83 return 0; 84 85 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 86 return 0; 87 88 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh)) 89 return 0; 90 91 92 /* Bus independent probe */ 93 sc.lm_iot = ia->ia_iot; 94 sc.lm_ioh = ioh; 95 sc.lmsc.lm_writereg = lm_isa_writereg; 96 sc.lmsc.lm_readreg = lm_isa_readreg; 97 rv = lm_probe(&sc.lmsc); 98 99 bus_space_unmap(ia->ia_iot, ioh, 8); 100 101 if (rv) { 102 ia->ia_nio = 1; 103 ia->ia_io[0].ir_size = 8; 104 105 ia->ia_niomem = 0; 106 ia->ia_nirq = 0; 107 ia->ia_ndrq = 0; 108 } 109 110 return rv; 111} 112 113 114void 115lm_isa_attach(device_t parent, device_t self, void *aux) 116{ 117 struct lm_isa_softc *sc = device_private(self); 118 struct isa_attach_args *ia = aux; 119 120 sc->lm_iot = ia->ia_iot; 121 122 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, 123 &sc->lm_ioh)) { 124 aprint_error(": can't map i/o space\n"); 125 return; 126 } 127 128 /* Bus-independent attachment */ 129 sc->lmsc.sc_dev = self; 130 sc->lmsc.lm_writereg = lm_isa_writereg; 131 sc->lmsc.lm_readreg = lm_isa_readreg; 132 133 lm_attach(&sc->lmsc); 134} 135 136int 137lm_isa_detach(device_t self, int flags) 138{ 139 struct lm_isa_softc *sc = device_private(self); 140 141 lm_detach(&sc->lmsc); 142 bus_space_unmap(sc->lm_iot, sc->lm_ioh, 8); 143 return 0; 144} 145 146static uint8_t 147lm_isa_readreg(struct lm_softc *lmsc, int reg) 148{ 149 struct lm_isa_softc *sc = (struct lm_isa_softc *)lmsc; 150 151 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg); 152 return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA); 153} 154 155static void 156lm_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 164MODULE(MODULE_CLASS_DRIVER, lm_isa_common, ""); 165 166static int 167lm_isa_common_modcmd(modcmd_t cmd, void *priv) 168{ 169 if ((cmd == MODULE_CMD_INIT) || (cmd == MODULE_CMD_FINI)) 170 return 0; 171 return ENOTTY; 172} 173