4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "qemu/osdep.h"
26 #include "chardev/char.h"
27 #include "qapi/error.h"
28 #include "qemu/module.h"
29 #include "qemu/option.h"
30 #include <sys/ioctl.h>
33 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
34 #include <dev/ppbus/ppi.h>
35 #include <dev/ppbus/ppbconf.h>
36 #elif defined(__DragonFly__)
37 #include <dev/misc/ppi/ppi.h>
38 #include <bus/ppbus/ppbconf.h>
42 #include <linux/ppdev.h>
43 #include <linux/parport.h>
47 #include "chardev/char-fd.h"
48 #include "chardev/char-parallel.h"
50 #if defined(__linux__)
58 #define PARALLEL_CHARDEV(obj) \
59 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
61 static int pp_hw_mode(ParallelChardev *s, uint16_t mode)
63 if (s->mode != mode) {
65 if (ioctl(s->fd, PPSETMODE, &m) < 0) {
73 static int pp_ioctl(Chardev *chr, int cmd, void *arg)
75 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
80 case CHR_IOCTL_PP_READ_DATA:
81 if (ioctl(fd, PPRDATA, &b) < 0) {
86 case CHR_IOCTL_PP_WRITE_DATA:
88 if (ioctl(fd, PPWDATA, &b) < 0) {
92 case CHR_IOCTL_PP_READ_CONTROL:
93 if (ioctl(fd, PPRCONTROL, &b) < 0) {
96 /* Linux gives only the lowest bits, and no way to know data
97 direction! For better compatibility set the fixed upper
99 *(uint8_t *)arg = b | 0xc0;
101 case CHR_IOCTL_PP_WRITE_CONTROL:
103 if (ioctl(fd, PPWCONTROL, &b) < 0) {
107 case CHR_IOCTL_PP_READ_STATUS:
108 if (ioctl(fd, PPRSTATUS, &b) < 0) {
113 case CHR_IOCTL_PP_DATA_DIR:
114 if (ioctl(fd, PPDATADIR, (int *)arg) < 0) {
118 case CHR_IOCTL_PP_EPP_READ_ADDR:
119 if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
120 struct ParallelIOArg *parg = arg;
121 int n = read(fd, parg->buffer, parg->count);
122 if (n != parg->count) {
127 case CHR_IOCTL_PP_EPP_READ:
128 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
129 struct ParallelIOArg *parg = arg;
130 int n = read(fd, parg->buffer, parg->count);
131 if (n != parg->count) {
136 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
137 if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
138 struct ParallelIOArg *parg = arg;
139 int n = write(fd, parg->buffer, parg->count);
140 if (n != parg->count) {
145 case CHR_IOCTL_PP_EPP_WRITE:
146 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
147 struct ParallelIOArg *parg = arg;
148 int n = write(fd, parg->buffer, parg->count);
149 if (n != parg->count) {
160 static void qemu_chr_open_pp_fd(Chardev *chr,
165 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
167 if (ioctl(fd, PPCLAIM) < 0) {
168 error_setg_errno(errp, errno, "not a parallel port");
174 drv->mode = IEEE1284_MODE_COMPAT;
176 #endif /* __linux__ */
178 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
185 #define PARALLEL_CHARDEV(obj) \
186 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
188 static int pp_ioctl(Chardev *chr, int cmd, void *arg)
190 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
194 case CHR_IOCTL_PP_READ_DATA:
195 if (ioctl(drv->fd, PPIGDATA, &b) < 0) {
200 case CHR_IOCTL_PP_WRITE_DATA:
202 if (ioctl(drv->fd, PPISDATA, &b) < 0) {
206 case CHR_IOCTL_PP_READ_CONTROL:
207 if (ioctl(drv->fd, PPIGCTRL, &b) < 0) {
212 case CHR_IOCTL_PP_WRITE_CONTROL:
214 if (ioctl(drv->fd, PPISCTRL, &b) < 0) {
218 case CHR_IOCTL_PP_READ_STATUS:
219 if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) {
230 static void qemu_chr_open_pp_fd(Chardev *chr,
235 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
241 #ifdef HAVE_CHARDEV_PARPORT
242 static void qmp_chardev_open_parallel(Chardev *chr,
243 ChardevBackend *backend,
247 ChardevHostdev *parallel = backend->u.parallel.data;
250 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
254 qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
257 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
260 const char *device = qemu_opt_get(opts, "path");
261 ChardevHostdev *parallel;
263 if (device == NULL) {
264 error_setg(errp, "chardev: parallel: no device path given");
267 backend->type = CHARDEV_BACKEND_KIND_PARALLEL;
268 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
269 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
270 parallel->device = g_strdup(device);
273 static void char_parallel_class_init(ObjectClass *oc, void *data)
275 ChardevClass *cc = CHARDEV_CLASS(oc);
277 cc->parse = qemu_chr_parse_parallel;
278 cc->open = qmp_chardev_open_parallel;
279 #if defined(__linux__)
280 cc->chr_ioctl = pp_ioctl;
281 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
282 defined(__DragonFly__)
283 cc->chr_ioctl = pp_ioctl;
287 static void char_parallel_finalize(Object *obj)
289 #if defined(__linux__)
290 Chardev *chr = CHARDEV(obj);
291 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
294 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
295 ioctl(fd, PPRELEASE);
297 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
298 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
299 defined(__DragonFly__)
300 /* FIXME: close fd? */
304 static const TypeInfo char_parallel_type_info = {
305 .name = TYPE_CHARDEV_PARALLEL,
306 .parent = TYPE_CHARDEV,
307 .instance_size = sizeof(ParallelChardev),
308 .instance_finalize = char_parallel_finalize,
309 .class_init = char_parallel_class_init,
312 static void register_types(void)
314 type_register_static(&char_parallel_type_info);
317 type_init(register_types);