1 /* $NetBSD: tsdio.c,v 1.10 2009/05/12 09:10:16 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jesse Off 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: tsdio.c,v 1.10 2009/05/12 09:10:16 cegger Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 39 #include <sys/bus.h> 40 #include <sys/intr.h> 41 42 #include <dev/isa/isareg.h> 43 #include <dev/isa/isavar.h> 44 #include <dev/isa/isadmavar.h> 45 #include <dev/isa/tsdiovar.h> 46 47 int tsdio_probe(device_t, cfdata_t, void *); 48 void tsdio_attach(device_t, device_t, void *); 49 int tsdio_search(device_t, cfdata_t, const int *, void *); 50 int tsdio_print(void *, const char *); 51 52 CFATTACH_DECL(tsdio, sizeof(struct tsdio_softc), 53 tsdio_probe, tsdio_attach, NULL, NULL); 54 55 int 56 tsdio_probe(device_t parent, cfdata_t cf, void *aux) 57 { 58 struct isa_attach_args *ia = aux; 59 bus_space_tag_t iot = ia->ia_iot; 60 bus_space_handle_t dioh; 61 int rv = 0, have_io = 0; 62 63 if (ia->ia_nio < 1) 64 return (0); 65 if (ia->ia_nirq < 1) 66 return (0); 67 68 if (ISA_DIRECT_CONFIG(ia)) 69 return (0); 70 71 /* 72 * Disallow wildcarded I/O base. 73 */ 74 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 75 return (0); 76 77 /* 78 * Map the I/O space. 79 */ 80 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 81 0, &dioh)) 82 goto out; 83 have_io = 1; 84 85 if (bus_space_read_1(ia->ia_iot, dioh, 0) != 0x54) { 86 goto out; 87 } 88 89 rv = 1; 90 ia->ia_nio = 1; 91 ia->ia_io[0].ir_size = 8; 92 ia->ia_niomem = 0; 93 ia->ia_nirq = 0; 94 ia->ia_ndrq = 0; 95 96 out: 97 if (have_io) 98 bus_space_unmap(iot, dioh, 8); 99 100 return (rv); 101 } 102 103 void 104 tsdio_attach(device_t parent, device_t self, void *aux) 105 { 106 struct tsdio_softc *sc = (struct tsdio_softc *) self; 107 struct isa_attach_args *ia = aux; 108 109 sc->sc_iot = ia->ia_iot; 110 111 aprint_normal(": Technologic Systems TS-DIO24\n"); 112 113 /* 114 * Map the device. 115 */ 116 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 8, 117 0, &sc->sc_ioh)) { 118 aprint_error_dev(&sc->sc_dev, "unable to map i/o space\n"); 119 return; 120 } 121 122 /* 123 * Attach sub-devices 124 */ 125 config_search_ia(tsdio_search, self, "tsdio", NULL); 126 } 127 128 int 129 tsdio_search(device_t parent, cfdata_t cf, const int *l, void *aux) 130 { 131 struct tsdio_softc *sc = (struct tsdio_softc *)parent; 132 struct tsdio_attach_args sa; 133 134 sa.ta_iot = sc->sc_iot; 135 sa.ta_ioh = sc->sc_ioh; 136 137 if (config_match(parent, cf, &sa) > 0) 138 config_attach(parent, cf, &sa, tsdio_print); 139 140 return (0); 141 } 142 143 int 144 tsdio_print(void *aux, const char *name) 145 { 146 147 return (UNCONF); 148 } 149