sys/dev/acpi/atppc_acpi.c

   1 /* $NetBSD: atppc_acpi.c,v 1.15 2008/11/01 20:31:26 hans 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 1.15 2008/11/01 20:31:26 hans 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 }