1 /* $NetBSD: attimer_acpi.c,v 1.14 2010/03/05 14:00:17 jruoho 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 Quentin Garnier. 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 /* 33 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca> 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. The name of the author may not be used to endorse or promote products 42 * derived from this software without specific prior written permission. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 49 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 51 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 52 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 */ 56 57 /* 58 * ACPI attimer(4) attachment based on lpt_acpi.c by Jared D. McNeill. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: attimer_acpi.c,v 1.14 2010/03/05 14:00:17 jruoho Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/device.h> 66 #include <sys/systm.h> 67 68 #include <dev/acpi/acpivar.h> 69 70 #include <dev/ic/attimervar.h> 71 72 static int attimer_acpi_match(device_t, cfdata_t, void *); 73 static void attimer_acpi_attach(device_t, device_t, void *); 74 75 CFATTACH_DECL3_NEW(attimer_acpi, sizeof(struct attimer_softc), 76 attimer_acpi_match, attimer_acpi_attach, attimer_detach, NULL, NULL, NULL, 77 DVF_DETACH_SHUTDOWN); 78 79 /* 80 * Supported device IDs 81 */ 82 83 static const char * const attimer_acpi_ids[] = { 84 "PNP0100", /* AT Timer */ 85 NULL 86 }; 87 88 /* 89 * attimer_acpi_match: autoconf(9) match routine 90 */ 91 static int 92 attimer_acpi_match(device_t parent, cfdata_t match, void *aux) 93 { 94 struct acpi_attach_args *aa = aux; 95 96 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 97 return 0; 98 99 return acpi_match_hid(aa->aa_node->ad_devinfo, attimer_acpi_ids); 100 } 101 102 /* 103 * attimer_acpi_attach: autoconf(9) attach routine 104 */ 105 static void 106 attimer_acpi_attach(device_t parent, device_t self, void *aux) 107 { 108 struct attimer_softc *sc = device_private(self); 109 struct acpi_attach_args *aa = aux; 110 struct acpi_resources res; 111 struct acpi_io *io; 112 ACPI_STATUS rv; 113 114 sc->sc_dev = self; 115 116 /* parse resources */ 117 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 118 &res, &acpi_resource_parse_ops_default); 119 if (ACPI_FAILURE(rv)) 120 return; 121 122 /* find our i/o registers */ 123 io = acpi_res_io(&res, 0); 124 if (io == NULL) { 125 aprint_error_dev(self, 126 "unable to find i/o register resource\n"); 127 goto out; 128 } 129 130 sc->sc_iot = aa->aa_iot; 131 sc->sc_size = io->ar_length; 132 if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size, 133 0, &sc->sc_ioh) != 0) { 134 aprint_error_dev(self, "can't map i/o space\n"); 135 goto out; 136 } 137 138 attimer_attach(sc); 139 140 out: 141 acpi_resource_cleanup(&res); 142 } 143