1/* $NetBSD: lpt_acpi.c,v 1.23 2021/01/29 15:49:55 thorpej 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 1.23 2021/01/29 15:49:55 thorpej 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#include <dev/acpi/acpi_intr.h> 38 39#include <dev/ic/lptvar.h> 40 41#include <dev/isa/isadmavar.h> 42 43static int lpt_acpi_match(device_t, cfdata_t, void *); 44static void lpt_acpi_attach(device_t, device_t, void *); 45 46struct lpt_acpi_softc { 47 struct lpt_softc sc_lpt; 48}; 49 50CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match, 51 lpt_acpi_attach, NULL, NULL); 52 53/* 54 * Supported device IDs 55 */ 56 57static const struct device_compatible_entry compat_data[] = { 58 { .compat = "PNP04??" }, /* Standard LPT printer port */ 59 DEVICE_COMPAT_EOL 60}; 61 62/* 63 * lpt_acpi_match: autoconf(9) match routine 64 */ 65static int 66lpt_acpi_match(device_t parent, cfdata_t match, void *aux) 67{ 68 struct acpi_attach_args *aa = aux; 69 70 return acpi_compatible_match(aa, compat_data); 71} 72 73/* 74 * lpt_acpi_attach: autoconf(9) attach routine 75 */ 76static void 77lpt_acpi_attach(device_t parent, device_t self, void *aux) 78{ 79 struct lpt_acpi_softc *asc = device_private(self); 80 struct lpt_softc *sc = &asc->sc_lpt; 81 struct acpi_attach_args *aa = aux; 82 struct acpi_resources res; 83 struct acpi_io *io; 84 ACPI_STATUS rv; 85 86 sc->sc_dev = self; 87 88 if (!pmf_device_register(self, NULL, NULL)) 89 aprint_error_dev(self, "couldn't establish power handler\n"); 90 91 /* parse resources */ 92 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 93 &res, &acpi_resource_parse_ops_default); 94 if (ACPI_FAILURE(rv)) 95 return; 96 97 /* find our i/o registers */ 98 io = acpi_res_io(&res, 0); 99 if (io == NULL) { 100 aprint_error_dev(self, 101 "unable to find i/o register resource\n"); 102 goto out; 103 } 104 105 sc->sc_iot = aa->aa_iot; 106 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 107 0, &sc->sc_ioh)) { 108 aprint_error_dev(self, "can't map i/o space\n"); 109 goto out; 110 } 111 112 lpt_attach_subr(sc); 113 114 sc->sc_ih = acpi_intr_establish(self, 115 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 116 IPL_TTY, false, lptintr, sc, device_xname(self)); 117 if (sc->sc_ih == NULL) { 118 aprint_error_dev(self, "unable to establish interrupt\n"); 119 goto out; 120 } 121 122 out: 123 acpi_resource_cleanup(&res); 124} 125