1 /* $NetBSD: atppc_ofisa.c,v 1.14 2021/01/27 03:10:21 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_ofisa.c,v 1.14 2021/01/27 03:10:21 thorpej Exp $");
34
35 #include "opt_atppc.h"
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/errno.h>
40 #include <sys/ioctl.h>
41 #include <sys/syslog.h>
42 #include <sys/device.h>
43 #include <sys/proc.h>
44 #include <sys/termios.h>
45
46 #include <sys/bus.h>
47
48 #include <dev/ofw/openfirm.h>
49 #include <dev/isa/isavar.h>
50 #include <dev/ofisa/ofisavar.h>
51
52 #include <dev/ic/atppcvar.h>
53 #include <dev/isa/atppc_isadma.h>
54
55 static int atppc_ofisa_match(device_t, cfdata_t, void *);
56 static void atppc_ofisa_attach(device_t, device_t, void *);
57
58 struct atppc_ofisa_softc {
59 struct atppc_softc sc_atppc;
60
61 isa_chipset_tag_t sc_ic;
62 int sc_drq;
63 };
64
65 CFATTACH_DECL_NEW(atppc_ofisa, sizeof(struct atppc_ofisa_softc), atppc_ofisa_match,
66 atppc_ofisa_attach, NULL, NULL);
67
68 static int atppc_ofisa_dma_start(struct atppc_softc *, void *, u_int,
69 u_int8_t);
70 static int atppc_ofisa_dma_finish(struct atppc_softc *);
71 static int atppc_ofisa_dma_abort(struct atppc_softc *);
72 static int atppc_ofisa_dma_malloc(device_t, void **, bus_addr_t *,
73 bus_size_t);
74 static void atppc_ofisa_dma_free(device_t, void **, bus_addr_t *,
75 bus_size_t);
76
77 static const struct device_compatible_entry compat_data[] = {
78 { .compat = "pnpPNP,401" },
79 DEVICE_COMPAT_EOL
80 };
81
82 /*
83 * atppc_ofisa_match: autoconf(9) match routine
84 */
85 static int
atppc_ofisa_match(device_t parent,cfdata_t match,void * aux)86 atppc_ofisa_match(device_t parent, cfdata_t match, void *aux)
87 {
88 struct ofisa_attach_args *aa = aux;
89 int rv;
90
91 rv = of_compatible_match(aa->oba.oba_phandle, compat_data) ? 5 : 0;
92 #ifdef _LPT_OFISA_MD_MATCH
93 if (!rv)
94 rv = lpt_ofisa_md_match(parent, match, aux);
95 #endif
96 return (rv);
97 }
98
99 static void
atppc_ofisa_attach(device_t parent,device_t self,void * aux)100 atppc_ofisa_attach(device_t parent, device_t self, void *aux)
101 {
102 struct atppc_softc *sc = device_private(self);
103 struct atppc_ofisa_softc *asc = device_private(self);
104 struct ofisa_attach_args *aa = aux;
105 struct ofisa_reg_desc reg;
106 struct ofisa_intr_desc intr;
107 struct ofisa_dma_desc dma;
108 int n;
109
110 sc->sc_dev_ok = ATPPC_NOATTACH;
111
112 printf(": AT Parallel Port\n");
113
114 /* find our I/O space */
115 n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1);
116 #ifdef _LPT_OFISA_MD_REG_FIXUP
117 n = lpt_ofisa_md_reg_fixup(parent, self, aux, ®, 1, n);
118 #endif
119 if (n != 1) {
120 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
121 return;
122 }
123
124 /* find our IRQ */
125 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
126 #ifdef _LPT_OFISA_MD_INTR_FIXUP
127 n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
128 #endif
129 if (n != 1) {
130 aprint_error_dev(sc->sc_dev, "unable to find irq resource\n");
131 return;
132 }
133
134 /* find our DRQ */
135 if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) {
136 aprint_error_dev(sc->sc_dev, "unable to find DMA data\n");
137 return;
138 }
139 asc->sc_drq = dma.drq;
140
141 /* Attach */
142 sc->sc_dev = self;
143 sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
144 sc->sc_has = 0;
145 asc->sc_ic = aa->ic;
146
147 sc->sc_dev_ok = ATPPC_ATTACHED;
148
149 if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0,
150 &sc->sc_ioh) != 0) {
151 aprint_error_dev(self, "attempt to map bus space failed, device not "
152 "properly attached.\n");
153 return;
154 }
155
156 sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share,
157 IPL_TTY, atppcintr, sc);
158 sc->sc_has |= ATPPC_HAS_INTR;
159
160 /* setup DMA hooks */
161 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
162 sc->sc_has |= ATPPC_HAS_DMA;
163 sc->sc_dma_start = atppc_ofisa_dma_start;
164 sc->sc_dma_finish = atppc_ofisa_dma_finish;
165 sc->sc_dma_abort = atppc_ofisa_dma_abort;
166 sc->sc_dma_malloc = atppc_ofisa_dma_malloc;
167 sc->sc_dma_free = atppc_ofisa_dma_free;
168 }
169
170 /* Run soft configuration attach */
171 atppc_sc_attach(sc);
172 }
173
174 /* Start DMA operation over ISA bus */
175 static int
atppc_ofisa_dma_start(struct atppc_softc * lsc,void * buf,u_int nbytes,u_int8_t mode)176 atppc_ofisa_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
177 u_int8_t mode)
178 {
179 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
180
181 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
182 }
183
184 /* Stop DMA operation over ISA bus */
185 static int
atppc_ofisa_dma_finish(struct atppc_softc * lsc)186 atppc_ofisa_dma_finish(struct atppc_softc * lsc)
187 {
188 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
189
190 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
191 }
192
193 /* Abort DMA operation over ISA bus */
194 int
atppc_ofisa_dma_abort(struct atppc_softc * lsc)195 atppc_ofisa_dma_abort(struct atppc_softc * lsc)
196 {
197 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
198
199 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
200 }
201
202 /* Allocate memory for DMA over ISA bus */
203 int
atppc_ofisa_dma_malloc(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)204 atppc_ofisa_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
205 bus_size_t size)
206 {
207 struct atppc_ofisa_softc * sc = device_private(dev);
208
209 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
210 }
211
212 /* Free memory allocated by atppc_isa_dma_malloc() */
213 void
atppc_ofisa_dma_free(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)214 atppc_ofisa_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
215 bus_size_t size)
216 {
217 struct atppc_ofisa_softc * sc = device_private(dev);
218
219 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
220 }
221