1 /* $NetBSD: atppc_acpi.c,v 1.16 2009/02/17 12:46:01 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: atppc_acpi.c,v 1.16 2009/02/17 12:46:01 jmcneill Exp $"); 34 35 #include "opt_atppc.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/errno.h> 40 #include <sys/ioctl.h> 41 #include <sys/syslog.h> 42 #include <sys/device.h> 43 #include <sys/proc.h> 44 #include <sys/termios.h> 45 46 #include <sys/bus.h> 47 48 #include <dev/isa/isavar.h> 49 #include <dev/isa/isadmavar.h> 50 51 #include <dev/acpi/acpica.h> 52 #include <dev/acpi/acpireg.h> 53 #include <dev/acpi/acpivar.h> 54 55 #include <dev/ic/atppcvar.h> 56 #include <dev/isa/atppc_isadma.h> 57 58 static int atppc_acpi_match(device_t, cfdata_t, void *); 59 static void atppc_acpi_attach(device_t, device_t, void *); 60 61 struct atppc_acpi_softc { 62 struct atppc_softc sc_atppc; 63 64 isa_chipset_tag_t sc_ic; 65 int sc_drq; 66 }; 67 68 CFATTACH_DECL_NEW(atppc_acpi, sizeof(struct atppc_acpi_softc), atppc_acpi_match, 69 atppc_acpi_attach, NULL, NULL); 70 71 /* 72 * Supported device IDs 73 */ 74 75 static const char * const atppc_acpi_ids[] = { 76 "PNP04??", /* Standard AT printer port */ 77 NULL 78 }; 79 80 static int atppc_acpi_dma_start(struct atppc_softc *, void *, u_int, 81 u_int8_t); 82 static int atppc_acpi_dma_finish(struct atppc_softc *); 83 static int atppc_acpi_dma_abort(struct atppc_softc *); 84 static int atppc_acpi_dma_malloc(device_t, void **, bus_addr_t *, 85 bus_size_t); 86 static void atppc_acpi_dma_free(device_t, void **, bus_addr_t *, 87 bus_size_t); 88 /* 89 * atppc_acpi_match: autoconf(9) match routine 90 */ 91 static int 92 atppc_acpi_match(device_t parent, cfdata_t match, void *aux) 93 { 94 struct acpi_attach_args *aa = aux; 95 96 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 97 return 0; 98 99 return acpi_match_hid(aa->aa_node->ad_devinfo, atppc_acpi_ids); 100 } 101 102 static void 103 atppc_acpi_attach(device_t parent, device_t self, void *aux) 104 { 105 struct atppc_softc *sc = device_private(self); 106 struct atppc_acpi_softc *asc = device_private(self); 107 struct acpi_attach_args *aa = aux; 108 struct acpi_resources res; 109 struct acpi_io *io; 110 struct acpi_irq *irq; 111 struct acpi_drq *drq; 112 ACPI_STATUS rv; 113 int nirq; 114 115 sc->sc_dev_ok = ATPPC_NOATTACH; 116 117 sc->sc_dev = self; 118 119 /* parse resources */ 120 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 121 &res, &acpi_resource_parse_ops_default); 122 if (ACPI_FAILURE(rv)) 123 return; 124 125 /* find our i/o registers */ 126 io = acpi_res_io(&res, 0); 127 if (io == NULL) { 128 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n"); 129 goto out; 130 } 131 132 /* find our IRQ */ 133 irq = acpi_res_irq(&res, 0); 134 if (irq == NULL) { 135 aprint_error_dev(sc->sc_dev, "unable to find irq resource\n"); 136 goto out; 137 } 138 nirq = irq->ar_irq; 139 140 /* find our DRQ */ 141 drq = acpi_res_drq(&res, 0); 142 if (drq == NULL) { 143 aprint_error_dev(sc->sc_dev, "unable to find drq resource\n"); 144 goto out; 145 } 146 asc->sc_drq = drq->ar_drq; 147 148 /* Attach */ 149 sc->sc_iot = aa->aa_iot; 150 sc->sc_has = 0; 151 asc->sc_ic = aa->aa_ic; 152 153 sc->sc_dev_ok = ATPPC_ATTACHED; 154 155 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 0, 156 &sc->sc_ioh) != 0) { 157 aprint_error_dev(self, "attempt to map bus space failed, device not " 158 "properly attached.\n"); 159 goto out; 160 } 161 162 sc->sc_ieh = isa_intr_establish(aa->aa_ic, nirq, 163 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 164 IPL_TTY, atppcintr, sc->sc_dev); 165 166 /* setup DMA hooks */ 167 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 168 sc->sc_has |= ATPPC_HAS_DMA; 169 sc->sc_dma_start = atppc_acpi_dma_start; 170 sc->sc_dma_finish = atppc_acpi_dma_finish; 171 sc->sc_dma_abort = atppc_acpi_dma_abort; 172 sc->sc_dma_malloc = atppc_acpi_dma_malloc; 173 sc->sc_dma_free = atppc_acpi_dma_free; 174 } 175 176 sc->sc_has |= ATPPC_HAS_INTR; 177 178 /* Run soft configuration attach */ 179 atppc_sc_attach(sc); 180 out: 181 acpi_resource_cleanup(&res); 182 } 183 184 /* Start DMA operation over ISA bus */ 185 static int 186 atppc_acpi_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 187 u_int8_t mode) 188 { 189 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 190 191 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 192 } 193 194 /* Stop DMA operation over ISA bus */ 195 static int 196 atppc_acpi_dma_finish(struct atppc_softc * lsc) 197 { 198 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 199 200 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 201 } 202 203 /* Abort DMA operation over ISA bus */ 204 int 205 atppc_acpi_dma_abort(struct atppc_softc * lsc) 206 { 207 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 208 209 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 210 } 211 212 /* Allocate memory for DMA over ISA bus */ 213 static int 214 atppc_acpi_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr, 215 bus_size_t size) 216 { 217 struct atppc_acpi_softc * sc = device_private(dev); 218 219 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 220 } 221 222 /* Free memory allocated by atppc_isa_dma_malloc() */ 223 static void 224 atppc_acpi_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr, 225 bus_size_t size) 226 { 227 struct atppc_acpi_softc * sc = device_private(dev); 228 229 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 230 } 231