sys/dev/acpi/ug_acpi.c

   1 /* $NetBSD: ug_acpi.c,v 1.4 2008/03/26 16:09:37 xtraeme Exp $ */
   2
   3 /*
   4  * Copyright (c) 2007 Mihai Chelaru <kefren@netbsd.ro>
   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: ug_acpi.c,v 1.4 2008/03/26 16:09:37 xtraeme 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/envsys.h>
  39
  40 #include <sys/bus.h>
  41
  42 #include <dev/acpi/acpica.h>
  43 #include <dev/acpi/acpireg.h>
  44 #include <dev/acpi/acpivar.h>
  45
  46 #include <dev/sysmon/sysmonvar.h>
  47
  48 #include <dev/ic/ugreg.h>
  49 #include <dev/ic/ugvar.h>
  50
  51 /* autoconf(9) functions */
  52 static int      ug_acpi_match(device_t, cfdata_t, void *);
  53 static void     ug_acpi_attach(device_t, device_t, void *);
  54
  55 CFATTACH_DECL_NEW(ug_acpi, sizeof(struct ug_softc), ug_acpi_match,
  56     ug_acpi_attach, NULL, NULL);
  57
  58 /*
  59  * Supported devices
  60  * XXX: only uGuru 2005 for now
  61  */
  62
  63 static const char* const ug_acpi_ids[] = {
  64         "ABT2005",      /* uGuru 2005 */
  65         NULL
  66 };
  67
  68 static int
  69 ug_acpi_match(device_t parent, cfdata_t match, void *aux)
  70 {
  71         struct acpi_attach_args *aa = aux;
  72
  73         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
  74                 return 0;
  75
  76         return acpi_match_hid(aa->aa_node->ad_devinfo, ug_acpi_ids);
  77 }
  78
  79 static void
  80 ug_acpi_attach(device_t parent, device_t self, void *aux)
  81 {
  82         struct ug_softc *sc = device_private(self);
  83         struct acpi_attach_args *aa = aux;
  84         struct acpi_resources res;
  85         struct acpi_io *io;
  86         bus_space_handle_t ioh;
  87         ACPI_STATUS rv;
  88
  89         /* parse resources */
  90         rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
  91             &res, &acpi_resource_parse_ops_default);
  92         if (ACPI_FAILURE(rv))
  93                 return;
  94
  95         /* find our i/o registers */
  96         io = acpi_res_io(&res, 0);
  97         if (io == NULL) {
  98                 aprint_error_dev(self,
  99                     "unable to find i/o register resource\n");
 100                 acpi_resource_cleanup(&res);
 101                 return;
 102         }
 103
 104         if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
 105             0, &ioh)) {
 106                 aprint_error_dev(self, "can't map i/o space\n");
 107                 acpi_resource_cleanup(&res);
 108                 return;
 109         }
 110
 111         aprint_normal("%s", device_xname(self));
 112
 113         sc->version = 2;        /* uGuru 2005 */
 114         sc->sc_ioh = ioh;
 115         sc->sc_iot = aa->aa_iot;
 116         ug2_attach(self);
 117
 118         acpi_resource_cleanup(&res);
 119 }