1 /* $NetBSD: com_acpi.c,v 1.22 2006/11/16 01:32:47 christos 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 1.22 2006/11/16 01:32:47 christos 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 <machine/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(struct device *, struct cfdata *, void *); 52 static void com_acpi_attach(struct device *, struct device *, void *); 53 54 struct com_acpi_softc { 55 struct com_softc sc_com; 56 void *sc_ih; 57 }; 58 59 CFATTACH_DECL(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 NULL 75 }; 76 77 /* 78 * com_acpi_match: autoconf(9) match routine 79 */ 80 static int 81 com_acpi_match(struct device *parent, struct cfdata *match, 82 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(struct device *parent, struct device *self, void *aux) 97 { 98 struct com_acpi_softc *asc = (struct com_acpi_softc *)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_irq *irq; 104 bus_space_handle_t ioh; 105 ACPI_STATUS rv; 106 107 aprint_naive("\n"); 108 aprint_normal("\n"); 109 110 /* parse resources */ 111 rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 112 &res, &acpi_resource_parse_ops_default); 113 if (ACPI_FAILURE(rv)) 114 return; 115 116 /* find our i/o registers */ 117 io = acpi_res_io(&res, 0); 118 if (io == NULL) { 119 aprint_error("%s: unable to find i/o register resource\n", 120 sc->sc_dev.dv_xname); 121 goto out; 122 } 123 124 /* find our IRQ */ 125 irq = acpi_res_irq(&res, 0); 126 if (irq == NULL) { 127 aprint_error("%s: unable to find irq resource\n", 128 sc->sc_dev.dv_xname); 129 goto out; 130 } 131 132 if (!com_is_console(aa->aa_iot, io->ar_base, &ioh)) { 133 if (bus_space_map(sc->sc_regs.cr_iot, io->ar_base, io->ar_length, 134 0, &ioh)) { 135 aprint_error("%s: can't map i/o space\n", 136 sc->sc_dev.dv_xname); 137 goto out; 138 } 139 } 140 COM_INIT_REGS(sc->sc_regs, aa->aa_iot, ioh, io->ar_base); 141 142 aprint_normal("%s", sc->sc_dev.dv_xname); 143 144 if (com_probe_subr(&sc->sc_regs) == 0) { 145 aprint_error(": com probe failed\n"); 146 goto out; 147 } 148 149 sc->sc_frequency = 115200 * 16; 150 151 com_attach_subr(sc); 152 153 asc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 154 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 155 IPL_SERIAL, comintr, sc); 156 out: 157 acpi_resource_cleanup(&res); 158 } 159