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      1 /* $NetBSD: lpt_acpi.c,v 1.23 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 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: lpt_acpi.c,v 1.23 2021/01/29 15:49:55 thorpej 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 #include <dev/acpi/acpi_intr.h>
     38 
     39 #include <dev/ic/lptvar.h>
     40 
     41 #include <dev/isa/isadmavar.h>
     42 
     43 static int	lpt_acpi_match(device_t, cfdata_t, void *);
     44 static void	lpt_acpi_attach(device_t, device_t, void *);
     45 
     46 struct lpt_acpi_softc {
     47 	struct lpt_softc sc_lpt;
     48 };
     49 
     50 CFATTACH_DECL_NEW(lpt_acpi, sizeof(struct lpt_acpi_softc), lpt_acpi_match,
     51     lpt_acpi_attach, NULL, NULL);
     52 
     53 /*
     54  * Supported device IDs
     55  */
     56 
     57 static const struct device_compatible_entry compat_data[] = {
     58 	{ .compat = "PNP04??" },	/* Standard LPT printer port */
     59 	DEVICE_COMPAT_EOL
     60 };
     61 
     62 /*
     63  * lpt_acpi_match: autoconf(9) match routine
     64  */
     65 static int
     66 lpt_acpi_match(device_t parent, cfdata_t match, void *aux)
     67 {
     68 	struct acpi_attach_args *aa = aux;
     69 
     70 	return acpi_compatible_match(aa, compat_data);
     71 }
     72 
     73 /*
     74  * lpt_acpi_attach: autoconf(9) attach routine
     75  */
     76 static void
     77 lpt_acpi_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct lpt_acpi_softc *asc = device_private(self);
     80 	struct lpt_softc *sc = &asc->sc_lpt;
     81 	struct acpi_attach_args *aa = aux;
     82 	struct acpi_resources res;
     83 	struct acpi_io *io;
     84 	ACPI_STATUS rv;
     85 
     86 	sc->sc_dev = self;
     87 
     88 	if (!pmf_device_register(self, NULL, NULL))
     89 		aprint_error_dev(self, "couldn't establish power handler\n");
     90 
     91 	/* parse resources */
     92 	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
     93 	    &res, &acpi_resource_parse_ops_default);
     94 	if (ACPI_FAILURE(rv))
     95 		return;
     96 
     97 	/* find our i/o registers */
     98 	io = acpi_res_io(&res, 0);
     99 	if (io == NULL) {
    100 		aprint_error_dev(self,
    101 		    "unable to find i/o register resource\n");
    102 		goto out;
    103 	}
    104 
    105 	sc->sc_iot = aa->aa_iot;
    106 	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
    107 		    0, &sc->sc_ioh)) {
    108 		aprint_error_dev(self, "can't map i/o space\n");
    109 		goto out;
    110 	}
    111 
    112 	lpt_attach_subr(sc);
    113 
    114 	sc->sc_ih = acpi_intr_establish(self,
    115 	    (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
    116 	    IPL_TTY, false, lptintr, sc, device_xname(self));
    117 	if (sc->sc_ih == NULL) {
    118 		aprint_error_dev(self, "unable to establish interrupt\n");
    119 		goto out;
    120 	}
    121 
    122  out:
    123 	acpi_resource_cleanup(&res);
    124 }
    125