1 /* $NetBSD: atppc_acpi.c,v 1.22 2021/01/29 15:49:55 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: atppc_acpi.c,v 1.22 2021/01/29 15:49:55 thorpej Exp $");
34
35 #include "opt_atppc.h"
36
37 #include <sys/param.h>
38 #include <sys/device.h>
39 #include <sys/systm.h>
40 #include <sys/termios.h>
41
42 #include <dev/acpi/acpivar.h>
43 #include <dev/acpi/acpi_intr.h>
44
45 #include <dev/ic/atppcvar.h>
46
47 #include <dev/isa/isadmavar.h>
48 #include <dev/isa/atppc_isadma.h>
49
50 static int atppc_acpi_match(device_t, cfdata_t, void *);
51 static void atppc_acpi_attach(device_t, device_t, void *);
52
53 struct atppc_acpi_softc {
54 struct atppc_softc sc_atppc;
55
56 isa_chipset_tag_t sc_ic;
57 int sc_drq;
58 };
59
60 CFATTACH_DECL_NEW(atppc_acpi, sizeof(struct atppc_acpi_softc), atppc_acpi_match,
61 atppc_acpi_attach, NULL, NULL);
62
63 /*
64 * Supported device IDs
65 */
66
67 static const struct device_compatible_entry compat_data[] = {
68 { .compat = "PNP04??" }, /* Standard AT printer port */
69 DEVICE_COMPAT_EOL
70 };
71
72 static int atppc_acpi_dma_start(struct atppc_softc *, void *, u_int,
73 u_int8_t);
74 static int atppc_acpi_dma_finish(struct atppc_softc *);
75 static int atppc_acpi_dma_abort(struct atppc_softc *);
76 static int atppc_acpi_dma_malloc(device_t, void **, bus_addr_t *,
77 bus_size_t);
78 static void atppc_acpi_dma_free(device_t, void **, bus_addr_t *,
79 bus_size_t);
80 /*
81 * atppc_acpi_match: autoconf(9) match routine
82 */
83 static int
atppc_acpi_match(device_t parent,cfdata_t match,void * aux)84 atppc_acpi_match(device_t parent, cfdata_t match, void *aux)
85 {
86 struct acpi_attach_args *aa = aux;
87
88 return acpi_compatible_match(aa, compat_data);
89 }
90
91 static void
atppc_acpi_attach(device_t parent,device_t self,void * aux)92 atppc_acpi_attach(device_t parent, device_t self, void *aux)
93 {
94 struct atppc_softc *sc = device_private(self);
95 struct atppc_acpi_softc *asc = device_private(self);
96 struct acpi_attach_args *aa = aux;
97 struct acpi_resources res;
98 struct acpi_io *io;
99 struct acpi_drq *drq;
100 ACPI_STATUS rv;
101
102 sc->sc_dev_ok = ATPPC_NOATTACH;
103
104 sc->sc_dev = self;
105
106 /* parse resources */
107 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
108 &res, &acpi_resource_parse_ops_default);
109 if (ACPI_FAILURE(rv))
110 return;
111
112 /* find our i/o registers */
113 io = acpi_res_io(&res, 0);
114 if (io == NULL) {
115 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
116 goto out;
117 }
118
119 /* find our DRQ */
120 drq = acpi_res_drq(&res, 0);
121 if (drq == NULL) {
122 aprint_error_dev(sc->sc_dev, "unable to find drq resource\n");
123 goto out;
124 }
125 asc->sc_drq = drq->ar_drq;
126
127 /* Attach */
128 sc->sc_iot = aa->aa_iot;
129 sc->sc_has = 0;
130 asc->sc_ic = aa->aa_ic;
131
132 sc->sc_dev_ok = ATPPC_ATTACHED;
133
134 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 0,
135 &sc->sc_ioh) != 0) {
136 aprint_error_dev(self, "attempt to map bus space failed, device not "
137 "properly attached.\n");
138 goto out;
139 }
140
141 sc->sc_ieh = acpi_intr_establish(self,
142 (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
143 IPL_TTY, false, atppcintr, self, device_xname(self));
144 if (sc->sc_ieh == NULL) {
145 aprint_error_dev(self, "unable to establish interrupt\n");
146 goto out;
147 }
148
149 /* setup DMA hooks */
150 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
151 sc->sc_has |= ATPPC_HAS_DMA;
152 sc->sc_dma_start = atppc_acpi_dma_start;
153 sc->sc_dma_finish = atppc_acpi_dma_finish;
154 sc->sc_dma_abort = atppc_acpi_dma_abort;
155 sc->sc_dma_malloc = atppc_acpi_dma_malloc;
156 sc->sc_dma_free = atppc_acpi_dma_free;
157 }
158
159 sc->sc_has |= ATPPC_HAS_INTR;
160
161 /* Run soft configuration attach */
162 atppc_sc_attach(sc);
163 out:
164 acpi_resource_cleanup(&res);
165 }
166
167 /* Start DMA operation over ISA bus */
168 static int
atppc_acpi_dma_start(struct atppc_softc * lsc,void * buf,u_int nbytes,u_int8_t mode)169 atppc_acpi_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
170 u_int8_t mode)
171 {
172 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
173
174 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
175 }
176
177 /* Stop DMA operation over ISA bus */
178 static int
atppc_acpi_dma_finish(struct atppc_softc * lsc)179 atppc_acpi_dma_finish(struct atppc_softc * lsc)
180 {
181 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
182
183 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
184 }
185
186 /* Abort DMA operation over ISA bus */
187 int
atppc_acpi_dma_abort(struct atppc_softc * lsc)188 atppc_acpi_dma_abort(struct atppc_softc * lsc)
189 {
190 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
191
192 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
193 }
194
195 /* Allocate memory for DMA over ISA bus */
196 static int
atppc_acpi_dma_malloc(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)197 atppc_acpi_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
198 bus_size_t size)
199 {
200 struct atppc_acpi_softc * sc = device_private(dev);
201
202 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
203 }
204
205 /* Free memory allocated by atppc_isa_dma_malloc() */
206 static void
atppc_acpi_dma_free(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)207 atppc_acpi_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
208 bus_size_t size)
209 {
210 struct atppc_acpi_softc * sc = device_private(dev);
211
212 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
213 }
214