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lpt_acpi.c revision 1.18.2.1 
      1 /* $NetBSD: lpt_acpi.c,v 1.18.2.1 2010/04/30 14:43:06 uebayasi 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 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: lpt_acpi.c,v 1.18.2.1 2010/04/30 14:43:06 uebayasi Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/device.h>
     33 #include <sys/termios.h>
     34 #include <sys/systm.h>
     35 
     36 #include <dev/acpi/acpivar.h>
     37 
     38 #include <dev/ic/lptvar.h>
     39 
     40 #include <dev/isa/isadmavar.h>
     41 
     42 static int	lpt_acpi_match(device_t, cfdata_t, void *);
     43 static void	lpt_acpi_attach(device_t, device_t, void *);
     44 
     45 struct lpt_acpi_softc {
     46 	struct lpt_softc sc_lpt;
     47 };
     48 
     49 CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match,
     50     lpt_acpi_attach, NULL, NULL);
     51 
     52 /*
     53  * Supported device IDs
     54  */
     55 
     56 static const char * const lpt_acpi_ids[] = {
     57 	"PNP04??",	/* Standard LPT printer port */
     58 	NULL
     59 };
     60 
     61 /*
     62  * lpt_acpi_match: autoconf(9) match routine
     63  */
     64 static int
     65 lpt_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, lpt_acpi_ids);
     73 }
     74 
     75 /*
     76  * lpt_acpi_attach: autoconf(9) attach routine
     77  */
     78 static void
     79 lpt_acpi_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct lpt_acpi_softc *asc = device_private(self);
     82 	struct lpt_softc *sc = &asc->sc_lpt;
     83 	struct acpi_attach_args *aa = aux;
     84 	struct acpi_resources res;
     85 	struct acpi_io *io;
     86 	struct acpi_irq *irq;
     87 	ACPI_STATUS rv;
     88 
     89 	sc->sc_dev = self;
     90 
     91 	if (!pmf_device_register(self, NULL, NULL))
     92 		aprint_error_dev(self, "couldn't establish power handler\n");
     93 
     94 	/* parse resources */
     95 	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
     96 	    &res, &acpi_resource_parse_ops_default);
     97 	if (ACPI_FAILURE(rv))
     98 		return;
     99 
    100 	/* find our i/o registers */
    101 	io = acpi_res_io(&res, 0);
    102 	if (io == NULL) {
    103 		aprint_error_dev(self,
    104 		    "unable to find i/o register resource\n");
    105 		goto out;
    106 	}
    107 
    108 	/* find our IRQ */
    109 	irq = acpi_res_irq(&res, 0);
    110 	if (irq == NULL) {
    111 		aprint_error_dev(self, "unable to find irq resource\n");
    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_ioh)) {
    118 		aprint_error_dev(self, "can't map i/o space\n");
    119 		goto out;
    120 	}
    121 
    122 	lpt_attach_subr(sc);
    123 
    124 	sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
    125 	    (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
    126 	    IPL_TTY, lptintr, sc);
    127 
    128  out:
    129 	acpi_resource_cleanup(&res);
    130 }
    131