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/option.h"
29 #include <sys/ioctl.h>
32 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
33 #include <dev/ppbus/ppi.h>
34 #include <dev/ppbus/ppbconf.h>
35 #elif defined(__DragonFly__)
36 #include <dev/misc/ppi/ppi.h>
37 #include <bus/ppbus/ppbconf.h>
41 #include <linux/ppdev.h>
42 #include <linux/parport.h>
46 #include "chardev/char-fd.h"
47 #include "chardev/char-parallel.h"
49 #if defined(__linux__)
57 #define PARALLEL_CHARDEV(obj) \
58 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
60 static int pp_hw_mode(ParallelChardev *s, uint16_t mode)
62 if (s->mode != mode) {
64 if (ioctl(s->fd, PPSETMODE, &m) < 0) {
72 static int pp_ioctl(Chardev *chr, int cmd, void *arg)
74 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
79 case CHR_IOCTL_PP_READ_DATA:
80 if (ioctl(fd, PPRDATA, &b) < 0) {
85 case CHR_IOCTL_PP_WRITE_DATA:
87 if (ioctl(fd, PPWDATA, &b) < 0) {
91 case CHR_IOCTL_PP_READ_CONTROL:
92 if (ioctl(fd, PPRCONTROL, &b) < 0) {
95 /* Linux gives only the lowest bits, and no way to know data
96 direction! For better compatibility set the fixed upper
98 *(uint8_t *)arg = b | 0xc0;
100 case CHR_IOCTL_PP_WRITE_CONTROL:
102 if (ioctl(fd, PPWCONTROL, &b) < 0) {
106 case CHR_IOCTL_PP_READ_STATUS:
107 if (ioctl(fd, PPRSTATUS, &b) < 0) {
112 case CHR_IOCTL_PP_DATA_DIR:
113 if (ioctl(fd, PPDATADIR, (int *)arg) < 0) {
117 case CHR_IOCTL_PP_EPP_READ_ADDR:
118 if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
119 struct ParallelIOArg *parg = arg;
120 int n = read(fd, parg->buffer, parg->count);
121 if (n != parg->count) {
126 case CHR_IOCTL_PP_EPP_READ:
127 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
128 struct ParallelIOArg *parg = arg;
129 int n = read(fd, parg->buffer, parg->count);
130 if (n != parg->count) {
135 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
136 if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
137 struct ParallelIOArg *parg = arg;
138 int n = write(fd, parg->buffer, parg->count);
139 if (n != parg->count) {
144 case CHR_IOCTL_PP_EPP_WRITE:
145 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
146 struct ParallelIOArg *parg = arg;
147 int n = write(fd, parg->buffer, parg->count);
148 if (n != parg->count) {
159 static void qemu_chr_open_pp_fd(Chardev *chr,
164 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
166 if (ioctl(fd, PPCLAIM) < 0) {
167 error_setg_errno(errp, errno, "not a parallel port");
173 drv->mode = IEEE1284_MODE_COMPAT;
175 #endif /* __linux__ */
177 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
184 #define PARALLEL_CHARDEV(obj) \
185 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
187 static int pp_ioctl(Chardev *chr, int cmd, void *arg)
189 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
193 case CHR_IOCTL_PP_READ_DATA:
194 if (ioctl(drv->fd, PPIGDATA, &b) < 0) {
199 case CHR_IOCTL_PP_WRITE_DATA:
201 if (ioctl(drv->fd, PPISDATA, &b) < 0) {
205 case CHR_IOCTL_PP_READ_CONTROL:
206 if (ioctl(drv->fd, PPIGCTRL, &b) < 0) {
211 case CHR_IOCTL_PP_WRITE_CONTROL:
213 if (ioctl(drv->fd, PPISCTRL, &b) < 0) {
217 case CHR_IOCTL_PP_READ_STATUS:
218 if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) {
229 static void qemu_chr_open_pp_fd(Chardev *chr,
234 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
240 #ifdef HAVE_CHARDEV_PARPORT
241 static void qmp_chardev_open_parallel(Chardev *chr,
242 ChardevBackend *backend,
246 ChardevHostdev *parallel = backend->u.parallel.data;
249 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
253 qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
256 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
259 const char *device = qemu_opt_get(opts, "path");
260 ChardevHostdev *parallel;
262 if (device == NULL) {
263 error_setg(errp, "chardev: parallel: no device path given");
266 backend->type = CHARDEV_BACKEND_KIND_PARALLEL;
267 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
268 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
269 parallel->device = g_strdup(device);
272 static void char_parallel_class_init(ObjectClass *oc, void *data)
274 ChardevClass *cc = CHARDEV_CLASS(oc);
276 cc->parse = qemu_chr_parse_parallel;
277 cc->open = qmp_chardev_open_parallel;
278 #if defined(__linux__)
279 cc->chr_ioctl = pp_ioctl;
280 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
281 defined(__DragonFly__)
282 cc->chr_ioctl = pp_ioctl;
286 static void char_parallel_finalize(Object *obj)
288 #if defined(__linux__)
289 Chardev *chr = CHARDEV(obj);
290 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
293 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
294 ioctl(fd, PPRELEASE);
296 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
297 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
298 defined(__DragonFly__)
299 /* FIXME: close fd? */
303 static const TypeInfo char_parallel_type_info = {
304 .name = TYPE_CHARDEV_PARALLEL,
305 .parent = TYPE_CHARDEV,
306 .instance_size = sizeof(ParallelChardev),
307 .instance_finalize = char_parallel_finalize,
308 .class_init = char_parallel_class_init,
311 static void register_types(void)
313 type_register_static(&char_parallel_type_info);
316 type_init(register_types);