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lpt_acpi.c revision 1.1 
      1 /* $NetBSD: lpt_acpi.c,v 1.1 2002/12/28 08:04:28 jmcneill 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 1.1 2002/12/28 08:04:28 jmcneill 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 <machine/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 int	lpt_acpi_match(struct device *, struct cfdata *, void *);
     52 void	lpt_acpi_attach(struct device *, struct device *, void *);
     53 
     54 struct lpt_acpi_softc {
     55 	struct lpt_softc sc_lpt;
     56 };
     57 
     58 CFATTACH_DECL(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 	"PNP0400",	/* Standard LPT printer port */
     67 	"PNP0401",	/* ECP printer port */
     68 	NULL
     69 };
     70 
     71 /*
     72  * lpt_acpi_match: autoconf(9) match routine
     73  */
     74 int
     75 lpt_acpi_match(struct device *parent, struct cfdata *match, void *aux)
     76 {
     77 	struct acpi_attach_args *aa = aux;
     78 	const char *id;
     79 	int i;
     80 
     81 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     82 		return 0;
     83 
     84 	for (i = 0; (id = lpt_acpi_ids[i]) != NULL; ++i) {
     85 		if (strcmp(aa->aa_node->ad_devinfo.HardwareId, id) == 0)
     86 			return 1;
     87 	}
     88 
     89 	/* No matches found */
     90 	return 0;
     91 }
     92 
     93 /*
     94  * lpt_acpi_attach: autoconf(9) attach routine
     95  */
     96 void
     97 lpt_acpi_attach(struct device *parent, struct device *self, void *aux)
     98 {
     99 	struct lpt_acpi_softc *asc = (struct lpt_acpi_softc *)self;
    100 	struct lpt_softc *sc = &asc->sc_lpt;
    101 	struct acpi_attach_args *aa = aux;
    102 	struct acpi_resources res;
    103 	struct acpi_io *io;
    104 	struct acpi_irq *irq;
    105 	ACPI_STATUS rv;
    106 
    107 	printf("\n");
    108 
    109 	/* parse resources */
    110 	rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node, &res,
    111 	    &acpi_resource_parse_ops_default);
    112 	if (rv != AE_OK) {
    113 		printf("%s: unable to parse resources\n", sc->sc_dev.dv_xname);
    114 		return;
    115 	}
    116 
    117 	/* find our i/o registers */
    118 	io = acpi_res_io(&res, 0);
    119 	if (io == NULL) {
    120 		printf("%s: unable to find i/o register resource\n",
    121 		    sc->sc_dev.dv_xname);
    122 		return;
    123 	}
    124 
    125 	/* find our IRQ */
    126 	irq = acpi_res_irq(&res, 0);
    127 	if (irq == NULL) {
    128 		printf("%s: unable to find irq resource\n",
    129 		    sc->sc_dev.dv_xname);
    130 		return;
    131 	}
    132 
    133 	sc->sc_iot = aa->aa_iot;
    134 	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
    135 		    0, &sc->sc_ioh)) {
    136 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
    137 		return;
    138 	}
    139 
    140 	lpt_attach_subr(sc);
    141 
    142 	sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 0,
    143 				       IPL_TTY, lptintr, sc);
    144 }
    145