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lpt_acpi.c revision 1.17.6.1 
      1 /* $NetBSD: lpt_acpi.c,v 1.17.6.1 2009/03/03 18:30:31 skrll 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 1.17.6.1 2009/03/03 18:30:31 skrll 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/termios.h>
     39 
     40 #include <sys/bus.h>
     41 
     42 #include <dev/isa/isavar.h>
     43 #include <dev/isa/isadmavar.h>
     44 
     45 #include <dev/acpi/acpica.h>
     46 #include <dev/acpi/acpireg.h>
     47 #include <dev/acpi/acpivar.h>
     48 
     49 #include <dev/ic/lptvar.h>
     50 
     51 static int	lpt_acpi_match(device_t, cfdata_t, void *);
     52 static void	lpt_acpi_attach(device_t, device_t, void *);
     53 
     54 struct lpt_acpi_softc {
     55 	struct lpt_softc sc_lpt;
     56 };
     57 
     58 CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match,
     59     lpt_acpi_attach, NULL, NULL);
     60 
     61 /*
     62  * Supported device IDs
     63  */
     64 
     65 static const char * const lpt_acpi_ids[] = {
     66 	"PNP04??",	/* Standard LPT printer port */
     67 	NULL
     68 };
     69 
     70 /*
     71  * lpt_acpi_match: autoconf(9) match routine
     72  */
     73 static int
     74 lpt_acpi_match(device_t parent, cfdata_t match, 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, lpt_acpi_ids);
     82 }
     83 
     84 /*
     85  * lpt_acpi_attach: autoconf(9) attach routine
     86  */
     87 static void
     88 lpt_acpi_attach(device_t parent, device_t self, void *aux)
     89 {
     90 	struct lpt_acpi_softc *asc = device_private(self);
     91 	struct lpt_softc *sc = &asc->sc_lpt;
     92 	struct acpi_attach_args *aa = aux;
     93 	struct acpi_resources res;
     94 	struct acpi_io *io;
     95 	struct acpi_irq *irq;
     96 	ACPI_STATUS rv;
     97 
     98 	sc->sc_dev = self;
     99 
    100 	if (!pmf_device_register(self, NULL, NULL))
    101 		aprint_error_dev(self, "couldn't establish power handler\n");
    102 
    103 	/* parse resources */
    104 	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
    105 	    &res, &acpi_resource_parse_ops_default);
    106 	if (ACPI_FAILURE(rv))
    107 		return;
    108 
    109 	/* find our i/o registers */
    110 	io = acpi_res_io(&res, 0);
    111 	if (io == NULL) {
    112 		aprint_error_dev(self,
    113 		    "unable to find i/o register resource\n");
    114 		goto out;
    115 	}
    116 
    117 	/* find our IRQ */
    118 	irq = acpi_res_irq(&res, 0);
    119 	if (irq == NULL) {
    120 		aprint_error_dev(self, "unable to find irq resource\n");
    121 		goto out;
    122 	}
    123 
    124 	sc->sc_iot = aa->aa_iot;
    125 	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
    126 		    0, &sc->sc_ioh)) {
    127 		aprint_error_dev(self, "can't map i/o space\n");
    128 		goto out;
    129 	}
    130 
    131 	lpt_attach_subr(sc);
    132 
    133 	sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
    134 	    (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
    135 	    IPL_TTY, lptintr, sc);
    136 
    137  out:
    138 	acpi_resource_cleanup(&res);
    139 }
    140