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pcppi_acpi.c revision 1.7 
      1 /* $NetBSD: pcppi_acpi.c,v 1.7 2007/10/19 11:59:35 ad 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 1.7 2007/10/19 11:59:35 ad Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/errno.h>
     38 #include <sys/ioctl.h>
     39 #include <sys/device.h>
     40 #include <sys/proc.h>
     41 
     42 #include <sys/bus.h>
     43 
     44 #include <dev/acpi/acpica.h>
     45 #include <dev/acpi/acpireg.h>
     46 #include <dev/acpi/acpivar.h>
     47 
     48 #include <dev/isa/pcppivar.h>
     49 
     50 static int	pcppi_acpi_match(struct device *, struct cfdata *, void *);
     51 static void	pcppi_acpi_attach(struct device *, struct device *, void *);
     52 
     53 struct pcppi_acpi_softc {
     54 	struct pcppi_softc sc_pcppi;
     55 };
     56 
     57 CFATTACH_DECL(pcppi_acpi, sizeof(struct pcppi_acpi_softc), pcppi_acpi_match,
     58     pcppi_acpi_attach, NULL, NULL);
     59 
     60 /*
     61  * Supported device IDs
     62  */
     63 
     64 static const char * const pcppi_acpi_ids[] = {
     65 	"PNP0800",	/* AT-style speaker sound */
     66 	NULL
     67 };
     68 
     69 /*
     70  * pcppi_acpi_match: autoconf(9) match routine
     71  */
     72 static int
     73 pcppi_acpi_match(struct device *parent, struct cfdata *match,
     74     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, pcppi_acpi_ids);
     82 }
     83 
     84 /*
     85  * pcppi_acpi_attach: autoconf(9) attach routine
     86  */
     87 static void
     88 pcppi_acpi_attach(struct device *parent, struct device *self,
     89     void *aux)
     90 {
     91 	struct pcppi_acpi_softc *asc = (struct pcppi_acpi_softc *)self;
     92 	struct pcppi_softc *sc = &asc->sc_pcppi;
     93 	struct acpi_attach_args *aa = aux;
     94 	struct acpi_resources res;
     95 	struct acpi_io *io;
     96 	ACPI_STATUS rv;
     97 
     98 	aprint_naive("\n");
     99 	aprint_normal("\n");
    100 
    101 	/* parse resources */
    102 	rv = acpi_resource_parse(&sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
    103 	    &res, &acpi_resource_parse_ops_default);
    104 	if (ACPI_FAILURE(rv))
    105 		return;
    106 
    107 	/* find our i/o registers */
    108 	io = acpi_res_io(&res, 0);
    109 	if (io == NULL) {
    110 		aprint_error("%s: unable to find i/o register resource\n",
    111 		    sc->sc_dv.dv_xname);
    112 		goto out;
    113 	}
    114 
    115 	sc->sc_iot = aa->aa_iot;
    116 	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
    117 		    0, &sc->sc_ppi_ioh)) {
    118 		aprint_error("%s: can't map i/o space\n", sc->sc_dv.dv_xname);
    119 		goto out;
    120 	}
    121 
    122 	pcppi_attach(sc);
    123 
    124  out:
    125 	acpi_resource_cleanup(&res);
    126 }
    127