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      1 /* $NetBSD: pcppi_acpi.c,v 1.13 2021/01/29 15:49:55 thorpej 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 1.13 2021/01/29 15:49:55 thorpej 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 struct device_compatible_entry compat_data[] = {
     57 	{ .compat = "PNP0800" },	/* AT-style speaker sound */
     58 	DEVICE_COMPAT_EOL
     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 	return acpi_compatible_match(aa, compat_data);
     70 }
     71 
     72 /*
     73  * pcppi_acpi_attach: autoconf(9) attach routine
     74  */
     75 static void
     76 pcppi_acpi_attach(device_t parent, device_t self, void *aux)
     77 {
     78 	struct pcppi_acpi_softc *asc = device_private(self);
     79 	struct pcppi_softc *sc = &asc->sc_pcppi;
     80 	struct acpi_attach_args *aa = aux;
     81 	struct acpi_resources res;
     82 	struct acpi_io *io;
     83 	ACPI_STATUS rv;
     84 
     85 	sc->sc_dv = self;
     86 
     87 	/* parse resources */
     88 	rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
     89 	    &res, &acpi_resource_parse_ops_default);
     90 	if (ACPI_FAILURE(rv))
     91 		return;
     92 
     93 	/* find our i/o registers */
     94 	io = acpi_res_io(&res, 0);
     95 	if (io == NULL) {
     96 		aprint_error_dev(self,
     97 		    "unable to find i/o register resource\n");
     98 		goto out;
     99 	}
    100 
    101 	sc->sc_iot = aa->aa_iot;
    102 	sc->sc_size = io->ar_length;
    103 	if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
    104 		    0, &sc->sc_ppi_ioh)) {
    105 		aprint_error_dev(self, "can't map i/o space\n");
    106 		goto out;
    107 	}
    108 
    109 	pcppi_attach(sc);
    110 
    111  out:
    112 	acpi_resource_cleanup(&res);
    113 }
    114