1 /* $NetBSD: ug_acpi.c,v 1.6 2010/03/05 14:00:17 jruoho Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Mihai Chelaru <kefren@netbsd.ro> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: ug_acpi.c,v 1.6 2010/03/05 14:00:17 jruoho Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/systm.h> 34 35 #include <dev/acpi/acpivar.h> 36 37 #include <dev/ic/ugreg.h> 38 #include <dev/ic/ugvar.h> 39 40 /* autoconf(9) functions */ 41 static int ug_acpi_match(device_t, cfdata_t, void *); 42 static void ug_acpi_attach(device_t, device_t, void *); 43 44 CFATTACH_DECL_NEW(ug_acpi, sizeof(struct ug_softc), ug_acpi_match, 45 ug_acpi_attach, NULL, NULL); 46 47 /* 48 * Supported devices 49 * XXX: only uGuru 2005 for now 50 */ 51 52 static const char* const ug_acpi_ids[] = { 53 "ABT2005", /* uGuru 2005 */ 54 NULL 55 }; 56 57 static int 58 ug_acpi_match(device_t parent, cfdata_t match, void *aux) 59 { 60 struct acpi_attach_args *aa = aux; 61 62 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 63 return 0; 64 65 return acpi_match_hid(aa->aa_node->ad_devinfo, ug_acpi_ids); 66 } 67 68 static void 69 ug_acpi_attach(device_t parent, device_t self, void *aux) 70 { 71 struct ug_softc *sc = device_private(self); 72 struct acpi_attach_args *aa = aux; 73 struct acpi_resources res; 74 struct acpi_io *io; 75 bus_space_handle_t ioh; 76 ACPI_STATUS rv; 77 78 /* parse resources */ 79 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 80 &res, &acpi_resource_parse_ops_default); 81 if (ACPI_FAILURE(rv)) 82 return; 83 84 /* find our i/o registers */ 85 io = acpi_res_io(&res, 0); 86 if (io == NULL) { 87 aprint_error_dev(self, 88 "unable to find i/o register resource\n"); 89 acpi_resource_cleanup(&res); 90 return; 91 } 92 93 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 94 0, &ioh)) { 95 aprint_error_dev(self, "can't map i/o space\n"); 96 acpi_resource_cleanup(&res); 97 return; 98 } 99 100 aprint_normal("%s", device_xname(self)); 101 102 sc->version = 2; /* uGuru 2005 */ 103 sc->sc_ioh = ioh; 104 sc->sc_iot = aa->aa_iot; 105 ug2_attach(self); 106 107 acpi_resource_cleanup(&res); 108 } 109