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pcppi_acpi.c revision 1.10.4.2 
      1 /* $NetBSD: pcppi_acpi.c,v 1.10.4.2 2010/03/11 15:03:23 yamt Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002 Jared D. McNeill <jmcneill (at) 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 /*
     29  * ACPI pcppi(4) attachment based on lpt_acpi.c by Jared D. McNeill.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: pcppi_acpi.c,v 1.10.4.2 2010/03/11 15:03:23 yamt Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/device.h>
     37 
     38 #include <dev/acpi/acpivar.h>
     39 
     40 #include <dev/isa/pcppivar.h>
     41 
     42 static int	pcppi_acpi_match(device_t, cfdata_t, void *);
     43 static void	pcppi_acpi_attach(device_t, device_t, void *);
     44 
     45 struct pcppi_acpi_softc {
     46 	struct pcppi_softc sc_pcppi;
     47 };
     48 
     49 CFATTACH_DECL_NEW(pcppi_acpi, sizeof(struct pcppi_acpi_softc),
     50     pcppi_acpi_match, pcppi_acpi_attach, pcppi_detach, NULL);
     51 
     52 /*
     53  * Supported device IDs
     54  */
     55 
     56 static const char * const pcppi_acpi_ids[] = {
     57 	"PNP0800",	/* AT-style speaker sound */
     58 	NULL
     59 };
     60 
     61 /*
     62  * pcppi_acpi_match: autoconf(9) match routine
     63  */
     64 static int
     65 pcppi_acpi_match(device_t parent, cfdata_t match, void *aux)
     66 {
     67 	struct acpi_attach_args *aa = aux;
     68 
     69 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     70 		return 0;
     71 
     72 	return acpi_match_hid(aa->aa_node->ad_devinfo, pcppi_acpi_ids);
     73 }
     74 
     75 /*
     76  * pcppi_acpi_attach: autoconf(9) attach routine
     77  */
     78 static void
     79 pcppi_acpi_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct pcppi_acpi_softc *asc = device_private(self);
     82 	struct pcppi_softc *sc = &asc->sc_pcppi;
     83 	struct acpi_attach_args *aa = aux;
     84 	struct acpi_resources res;
     85 	struct acpi_io *io;
     86 	ACPI_STATUS rv;
     87 
     88 	sc->sc_dv = self;
     89 
     90 	/* parse resources */
     91 	rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
     92 	    &res, &acpi_resource_parse_ops_default);
     93 	if (ACPI_FAILURE(rv))
     94 		return;
     95 
     96 	/* find our i/o registers */
     97 	io = acpi_res_io(&res, 0);
     98 	if (io == NULL) {
     99 		aprint_error_dev(self,
    100 		    "unable to find i/o register resource\n");
    101 		goto out;
    102 	}
    103 
    104 	sc->sc_iot = aa->aa_iot;
    105 	sc->sc_size = io->ar_length;
    106 	if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
    107 		    0, &sc->sc_ppi_ioh)) {
    108 		aprint_error_dev(self, "can't map i/o space\n");
    109 		goto out;
    110 	}
    111 
    112 	pcppi_attach(sc);
    113 
    114  out:
    115 	acpi_resource_cleanup(&res);
    116 }
    117