1 /* $NetBSD: com_acpi.c,v 1.30 2009/11/12 20:30:10 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca> 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: com_acpi.c,v 1.30 2009/11/12 20:30:10 dyoung Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/errno.h> 34 #include <sys/ioctl.h> 35 #include <sys/syslog.h> 36 #include <sys/device.h> 37 #include <sys/proc.h> 38 #include <sys/termios.h> 39 40 #include <sys/bus.h> 41 42 #include <dev/isa/isavar.h> 43 #include <dev/isa/isadmavar.h> 44 45 #include <dev/acpi/acpica.h> 46 #include <dev/acpi/acpireg.h> 47 #include <dev/acpi/acpivar.h> 48 49 #include <dev/ic/comvar.h> 50 51 static int com_acpi_match(device_t, cfdata_t , void *); 52 static void com_acpi_attach(device_t, device_t, void *); 53 54 struct com_acpi_softc { 55 struct com_softc sc_com; 56 void *sc_ih; 57 }; 58 59 CFATTACH_DECL_NEW(com_acpi, sizeof(struct com_acpi_softc), com_acpi_match, 60 com_acpi_attach, NULL, NULL); 61 62 /* 63 * Supported device IDs 64 */ 65 66 static const char * const com_acpi_ids[] = { 67 "PNP0500", /* Standard PC COM port */ 68 "PNP0501", /* 16550A-compatible COM port */ 69 "PNP0510", /* Generic IRDA-compatible device */ 70 "PNP0511", /* Generic IRDA-compatible device */ 71 "IBM0071", /* IBM ThinkPad IRDA device */ 72 "SMCF010", /* SMC SuperIO IRDA device */ 73 "NSC6001", /* NSC IRDA device */ 74 "FUJ02E6", /* Fujitsu Serial Pen Tablet */ 75 NULL 76 }; 77 78 /* 79 * com_acpi_match: autoconf(9) match routine 80 */ 81 static int 82 com_acpi_match(device_t parent, cfdata_t match, void *aux) 83 { 84 struct acpi_attach_args *aa = aux; 85 86 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 87 return 0; 88 89 return acpi_match_hid(aa->aa_node->ad_devinfo,com_acpi_ids); 90 } 91 92 /* 93 * com_acpi_attach: autoconf(9) attach routine 94 */ 95 static void 96 com_acpi_attach(device_t parent, device_t self, void *aux) 97 { 98 struct com_acpi_softc *asc = device_private(self); 99 struct com_softc *sc = &asc->sc_com; 100 struct acpi_attach_args *aa = aux; 101 struct acpi_resources res; 102 struct acpi_io *io; 103 struct acpi_mem *mem; 104 struct acpi_irq *irq; 105 bus_space_tag_t iot; 106 bus_space_handle_t ioh; 107 bus_addr_t base; 108 bus_size_t size; 109 ACPI_STATUS rv; 110 111 sc->sc_dev = self; 112 113 /* parse resources */ 114 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 115 &res, &acpi_resource_parse_ops_default); 116 if (ACPI_FAILURE(rv)) 117 return; 118 119 /* find our i/o registers */ 120 io = acpi_res_io(&res, 0); 121 if (io != NULL) { 122 iot = aa->aa_iot; 123 base = io->ar_base; 124 size = io->ar_length; 125 } else { 126 mem = acpi_res_mem(&res, 0); 127 if (mem != NULL) { 128 iot = aa->aa_memt; 129 base = mem->ar_base; 130 size = mem->ar_length; 131 } else { 132 aprint_error_dev(self, 133 "unable to find i/o register and memory resource\n"); 134 goto out; 135 } 136 } 137 138 /* find our IRQ */ 139 irq = acpi_res_irq(&res, 0); 140 if (irq == NULL) { 141 aprint_error_dev(self, "unable to find irq resource\n"); 142 goto out; 143 } 144 145 if (!com_is_console(iot, base, &ioh)) 146 if (bus_space_map(iot, base, size, 0, &ioh)) { 147 aprint_error_dev(self, "can't map i/o space\n"); 148 goto out; 149 } 150 COM_INIT_REGS(sc->sc_regs, iot, ioh, base); 151 152 aprint_normal("%s", device_xname(self)); 153 154 if (com_probe_subr(&sc->sc_regs) == 0) { 155 aprint_error(": com probe failed\n"); 156 goto out; 157 } 158 159 sc->sc_frequency = 115200 * 16; 160 161 com_attach_subr(sc); 162 163 asc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 164 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 165 IPL_SERIAL, comintr, sc); 166 167 if (!pmf_device_register(self, NULL, com_resume)) 168 aprint_error_dev(self, "couldn't establish a power handler\n"); 169 170 out: 171 acpi_resource_cleanup(&res); 172 } 173