1 /* $NetBSD: lpt_acpi.c,v 1.19 2010/03/05 14:00:17 jruoho 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: lpt_acpi.c,v 1.19 2010/03/05 14:00:17 jruoho Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/termios.h> 34 #include <sys/systm.h> 35 36 #include <dev/acpi/acpivar.h> 37 38 #include <dev/ic/lptvar.h> 39 40 #include <dev/isa/isadmavar.h> 41 42 static int lpt_acpi_match(device_t, cfdata_t, void *); 43 static void lpt_acpi_attach(device_t, device_t, void *); 44 45 struct lpt_acpi_softc { 46 struct lpt_softc sc_lpt; 47 }; 48 49 CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match, 50 lpt_acpi_attach, NULL, NULL); 51 52 /* 53 * Supported device IDs 54 */ 55 56 static const char * const lpt_acpi_ids[] = { 57 "PNP04??", /* Standard LPT printer port */ 58 NULL 59 }; 60 61 /* 62 * lpt_acpi_match: autoconf(9) match routine 63 */ 64 static int 65 lpt_acpi_match(device_t parent, cfdata_t match, void *aux) 66 { 67 struct acpi_attach_args *aa = aux; 68 69 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 70 return 0; 71 72 return acpi_match_hid(aa->aa_node->ad_devinfo, lpt_acpi_ids); 73 } 74 75 /* 76 * lpt_acpi_attach: autoconf(9) attach routine 77 */ 78 static void 79 lpt_acpi_attach(device_t parent, device_t self, void *aux) 80 { 81 struct lpt_acpi_softc *asc = device_private(self); 82 struct lpt_softc *sc = &asc->sc_lpt; 83 struct acpi_attach_args *aa = aux; 84 struct acpi_resources res; 85 struct acpi_io *io; 86 struct acpi_irq *irq; 87 ACPI_STATUS rv; 88 89 sc->sc_dev = self; 90 91 if (!pmf_device_register(self, NULL, NULL)) 92 aprint_error_dev(self, "couldn't establish power handler\n"); 93 94 /* parse resources */ 95 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 96 &res, &acpi_resource_parse_ops_default); 97 if (ACPI_FAILURE(rv)) 98 return; 99 100 /* find our i/o registers */ 101 io = acpi_res_io(&res, 0); 102 if (io == NULL) { 103 aprint_error_dev(self, 104 "unable to find i/o register resource\n"); 105 goto out; 106 } 107 108 /* find our IRQ */ 109 irq = acpi_res_irq(&res, 0); 110 if (irq == NULL) { 111 aprint_error_dev(self, "unable to find irq resource\n"); 112 goto out; 113 } 114 115 sc->sc_iot = aa->aa_iot; 116 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 117 0, &sc->sc_ioh)) { 118 aprint_error_dev(self, "can't map i/o space\n"); 119 goto out; 120 } 121 122 lpt_attach_subr(sc); 123 124 sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 125 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 126 IPL_TTY, lptintr, sc); 127 128 out: 129 acpi_resource_cleanup(&res); 130 } 131