1 /* $NetBSD: com_acpi.c,v 1.32 2010/07/22 16:35:24 pgoyette 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 1.32 2010/07/22 16:35:24 pgoyette Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/systm.h> 34 #include <sys/termios.h> 35 36 #include <dev/acpi/acpivar.h> 37 38 #include <dev/ic/comvar.h> 39 40 #include <dev/isa/isadmavar.h> 41 42 static int com_acpi_match(device_t, cfdata_t , void *); 43 static void com_acpi_attach(device_t, device_t, void *); 44 45 struct com_acpi_softc { 46 struct com_softc sc_com; 47 void *sc_ih; 48 }; 49 50 CFATTACH_DECL_NEW(com_acpi, sizeof(struct com_acpi_softc), com_acpi_match, 51 com_acpi_attach, NULL, NULL); 52 53 /* 54 * Supported device IDs 55 */ 56 57 static const char * const com_acpi_ids[] = { 58 "PNP0500", /* Standard PC COM port */ 59 "PNP0501", /* 16550A-compatible COM port */ 60 "PNP0510", /* Generic IRDA-compatible device */ 61 "PNP0511", /* Generic IRDA-compatible device */ 62 "IBM0071", /* IBM ThinkPad IRDA device */ 63 "SMCF010", /* SMC SuperIO IRDA device */ 64 "NSC6001", /* NSC IRDA device */ 65 "FUJ02E6", /* Fujitsu Serial Pen Tablet */ 66 NULL 67 }; 68 69 /* 70 * com_acpi_match: autoconf(9) match routine 71 */ 72 static int 73 com_acpi_match(device_t parent, cfdata_t match, void *aux) 74 { 75 struct acpi_attach_args *aa = aux; 76 77 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 78 return 0; 79 80 return acpi_match_hid(aa->aa_node->ad_devinfo,com_acpi_ids); 81 } 82 83 /* 84 * com_acpi_attach: autoconf(9) attach routine 85 */ 86 static void 87 com_acpi_attach(device_t parent, device_t self, void *aux) 88 { 89 struct com_acpi_softc *asc = device_private(self); 90 struct com_softc *sc = &asc->sc_com; 91 struct acpi_attach_args *aa = aux; 92 struct acpi_resources res; 93 struct acpi_io *io; 94 struct acpi_mem *mem; 95 struct acpi_irq *irq; 96 bus_space_tag_t iot; 97 bus_space_handle_t ioh; 98 bus_addr_t base; 99 bus_size_t size; 100 ACPI_STATUS rv; 101 102 sc->sc_dev = self; 103 104 /* parse resources */ 105 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 106 &res, &acpi_resource_parse_ops_default); 107 if (ACPI_FAILURE(rv)) 108 return; 109 110 /* find our i/o registers */ 111 io = acpi_res_io(&res, 0); 112 if (io != NULL) { 113 iot = aa->aa_iot; 114 base = io->ar_base; 115 size = io->ar_length; 116 } else { 117 mem = acpi_res_mem(&res, 0); 118 if (mem != NULL) { 119 iot = aa->aa_memt; 120 base = mem->ar_base; 121 size = mem->ar_length; 122 } else { 123 aprint_error_dev(self, 124 "unable to find i/o register and memory resource\n"); 125 goto out; 126 } 127 } 128 129 /* find our IRQ */ 130 irq = acpi_res_irq(&res, 0); 131 if (irq == NULL) { 132 aprint_error_dev(self, "unable to find irq resource\n"); 133 goto out; 134 } 135 136 if (!com_is_console(iot, base, &ioh)) 137 if (bus_space_map(iot, base, size, 0, &ioh)) { 138 aprint_error_dev(self, "can't map i/o space\n"); 139 goto out; 140 } 141 COM_INIT_REGS(sc->sc_regs, iot, ioh, base); 142 143 aprint_normal("%s", device_xname(self)); 144 145 if (com_probe_subr(&sc->sc_regs) == 0) { 146 aprint_error(": com probe failed\n"); 147 goto out; 148 } 149 150 sc->sc_frequency = 115200 * 16; 151 152 com_attach_subr(sc); 153 154 asc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 155 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 156 IPL_SERIAL, comintr, sc); 157 158 if (!pmf_device_register(self, NULL, com_resume)) 159 aprint_error_dev(self, "couldn't establish a power handler\n"); 160 goto cleanup; 161 162 /* 163 * In case of irq resource or i/o space mapping error, just set 164 * a NULL power handler. This may allow us to sleep later on. 165 */ 166 out: 167 if (!pmf_device_register(self, NULL, NULL)) 168 aprint_error_dev(self, "couldn't establish a power handler\n"); 169 170 cleanup: 171 acpi_resource_cleanup(&res); 172 } 173