sys/dev/acpi/lpt_acpi.c

   1 /* $NetBSD: lpt_acpi.c,v 1.17 2008/05/31 14:07:03 jmcneill 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 1.17 2008/05/31 14:07:03 jmcneill 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 <sys/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/lptvar.h>
  50
  51 static int      lpt_acpi_match(device_t, cfdata_t, void *);
  52 static void     lpt_acpi_attach(device_t, device_t, void *);
  53
  54 struct lpt_acpi_softc {
  55         struct lpt_softc sc_lpt;
  56 };
  57
  58 CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match,
  59     lpt_acpi_attach, NULL, NULL);
  60
  61 /*
  62  * Supported device IDs
  63  */
  64
  65 static const char * const lpt_acpi_ids[] = {
  66         "PNP04??",      /* Standard LPT printer port */
  67         NULL
  68 };
  69
  70 /*
  71  * lpt_acpi_match: autoconf(9) match routine
  72  */
  73 static int
  74 lpt_acpi_match(device_t parent, cfdata_t match, void *aux)
  75 {
  76         struct acpi_attach_args *aa = aux;
  77
  78         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
  79                 return 0;
  80
  81         return acpi_match_hid(aa->aa_node->ad_devinfo, lpt_acpi_ids);
  82 }
  83
  84 /*
  85  * lpt_acpi_attach: autoconf(9) attach routine
  86  */
  87 static void
  88 lpt_acpi_attach(device_t parent, device_t self, void *aux)
  89 {
  90         struct lpt_acpi_softc *asc = device_private(self);
  91         struct lpt_softc *sc = &asc->sc_lpt;
  92         struct acpi_attach_args *aa = aux;
  93         struct acpi_resources res;
  94         struct acpi_io *io;
  95         struct acpi_irq *irq;
  96         ACPI_STATUS rv;
  97
  98         sc->sc_dev = self;
  99
 100         if (!pmf_device_register(self, NULL, NULL))
 101                 aprint_error_dev(self, "couldn't establish power handler\n");
 102
 103         /* parse resources */
 104         rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
 105             &res, &acpi_resource_parse_ops_default);
 106         if (ACPI_FAILURE(rv))
 107                 return;
 108
 109         /* find our i/o registers */
 110         io = acpi_res_io(&res, 0);
 111         if (io == NULL) {
 112                 aprint_error_dev(self,
 113                     "unable to find i/o register resource\n");
 114                 goto out;
 115         }
 116
 117         /* find our IRQ */
 118         irq = acpi_res_irq(&res, 0);
 119         if (irq == NULL) {
 120                 aprint_error_dev(self, "unable to find irq resource\n");
 121                 goto out;
 122         }
 123
 124         sc->sc_iot = aa->aa_iot;
 125         if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
 126                     0, &sc->sc_ioh)) {
 127                 aprint_error_dev(self, "can't map i/o space\n");
 128                 goto out;
 129         }
 130
 131         lpt_attach_subr(sc);
 132
 133         sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
 134             (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
 135             IPL_TTY, lptintr, sc);
 136
 137  out:
 138         acpi_resource_cleanup(&res);
 139 }