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@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
lpt_acpi_match(device_t parent,cfdata_t match,void * aux)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
lpt_acpi_attach(device_t parent,device_t self,void * aux)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