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Alon Levycbcc6332011-01-19 10:49:50 +02001#include "config-host.h"
2#include "trace.h"
3#include "ui/qemu-spice.h"
Paolo Bonzinidccfcd02013-04-08 16:55:25 +02004#include "sysemu/char.h"
Alon Levycbcc6332011-01-19 10:49:50 +02005#include <spice.h>
6#include <spice-experimental.h>
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +01007#include <spice/protocol.h>
Alon Levycbcc6332011-01-19 10:49:50 +02008
Paolo Bonzini1de7afc2012-12-17 18:20:00 +01009#include "qemu/osdep.h"
Alon Levycbcc6332011-01-19 10:49:50 +020010
Alon Levycbcc6332011-01-19 10:49:50 +020011typedef struct SpiceCharDriver {
12 CharDriverState* chr;
13 SpiceCharDeviceInstance sin;
14 char *subtype;
15 bool active;
Hans de Goedeae893e52013-04-05 11:30:22 +020016 bool blocked;
Alon Levyb010cec2013-04-05 11:30:23 +020017 const uint8_t *datapos;
18 int datalen;
Marc-André Lureau7a5448c2012-12-05 16:15:35 +010019 QLIST_ENTRY(SpiceCharDriver) next;
Alon Levycbcc6332011-01-19 10:49:50 +020020} SpiceCharDriver;
21
Hans de Goedeae893e52013-04-05 11:30:22 +020022typedef struct SpiceCharSource {
23 GSource source;
24 SpiceCharDriver *scd;
25} SpiceCharSource;
26
Marc-André Lureau7a5448c2012-12-05 16:15:35 +010027static QLIST_HEAD(, SpiceCharDriver) spice_chars =
28 QLIST_HEAD_INITIALIZER(spice_chars);
29
Alon Levycbcc6332011-01-19 10:49:50 +020030static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len)
31{
32 SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
33 ssize_t out = 0;
34 ssize_t last_out;
35 uint8_t* p = (uint8_t*)buf;
36
37 while (len > 0) {
Hans de Goede75c439b2013-04-05 11:30:24 +020038 int can_write = qemu_chr_be_can_write(scd->chr);
39 last_out = MIN(len, can_write);
Marc-André Lureau07a54d72012-12-05 16:15:32 +010040 if (last_out <= 0) {
Alon Levycbcc6332011-01-19 10:49:50 +020041 break;
42 }
Anthony Liguorifa5efcc2011-08-15 11:17:30 -050043 qemu_chr_be_write(scd->chr, p, last_out);
Hans de Goede35106c22011-03-22 16:28:41 +010044 out += last_out;
45 len -= last_out;
46 p += last_out;
Alon Levycbcc6332011-01-19 10:49:50 +020047 }
48
Alon Levycbcc6332011-01-19 10:49:50 +020049 trace_spice_vmc_write(out, len + out);
50 return out;
51}
52
53static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len)
54{
55 SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
56 int bytes = MIN(len, scd->datalen);
57
Alon Levycbcc6332011-01-19 10:49:50 +020058 if (bytes > 0) {
59 memcpy(buf, scd->datapos, bytes);
60 scd->datapos += bytes;
61 scd->datalen -= bytes;
62 assert(scd->datalen >= 0);
Hans de Goedeae893e52013-04-05 11:30:22 +020063 }
64 if (scd->datalen == 0) {
65 scd->datapos = 0;
66 scd->blocked = false;
Alon Levycbcc6332011-01-19 10:49:50 +020067 }
68 trace_spice_vmc_read(bytes, len);
69 return bytes;
70}
71
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +010072#if SPICE_SERVER_VERSION >= 0x000c02
73static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event)
74{
75 SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
76 int chr_event;
77
78 switch (event) {
79 case SPICE_PORT_EVENT_BREAK:
80 chr_event = CHR_EVENT_BREAK;
81 break;
82 default:
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +010083 return;
84 }
85
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +010086 trace_spice_vmc_event(chr_event);
87 qemu_chr_be_event(scd->chr, chr_event);
88}
89#endif
90
Hans de Goedef76e4c72011-11-19 10:22:44 +010091static void vmc_state(SpiceCharDeviceInstance *sin, int connected)
92{
93 SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
94
Hans de Goede16665b92013-03-26 11:07:53 +010095 if ((scd->chr->be_open && connected) ||
96 (!scd->chr->be_open && !connected)) {
Hans de Goedef76e4c72011-11-19 10:22:44 +010097 return;
98 }
99
100 qemu_chr_be_event(scd->chr,
101 connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED);
102}
103
Alon Levycbcc6332011-01-19 10:49:50 +0200104static SpiceCharDeviceInterface vmc_interface = {
105 .base.type = SPICE_INTERFACE_CHAR_DEVICE,
106 .base.description = "spice virtual channel char device",
107 .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR,
108 .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR,
Hans de Goedef76e4c72011-11-19 10:22:44 +0100109 .state = vmc_state,
Alon Levycbcc6332011-01-19 10:49:50 +0200110 .write = vmc_write,
111 .read = vmc_read,
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100112#if SPICE_SERVER_VERSION >= 0x000c02
113 .event = vmc_event,
114#endif
Alon Levycbcc6332011-01-19 10:49:50 +0200115};
116
117
118static void vmc_register_interface(SpiceCharDriver *scd)
119{
120 if (scd->active) {
121 return;
122 }
Alon Levycbcc6332011-01-19 10:49:50 +0200123 scd->sin.base.sif = &vmc_interface.base;
124 qemu_spice_add_interface(&scd->sin.base);
125 scd->active = true;
126 trace_spice_vmc_register_interface(scd);
127}
128
129static void vmc_unregister_interface(SpiceCharDriver *scd)
130{
131 if (!scd->active) {
132 return;
133 }
Alon Levycbcc6332011-01-19 10:49:50 +0200134 spice_server_remove_interface(&scd->sin.base);
135 scd->active = false;
136 trace_spice_vmc_unregister_interface(scd);
137}
138
Hans de Goedeae893e52013-04-05 11:30:22 +0200139static gboolean spice_char_source_prepare(GSource *source, gint *timeout)
140{
141 SpiceCharSource *src = (SpiceCharSource *)source;
142
143 *timeout = -1;
144
145 return !src->scd->blocked;
146}
147
148static gboolean spice_char_source_check(GSource *source)
149{
150 SpiceCharSource *src = (SpiceCharSource *)source;
151
152 return !src->scd->blocked;
153}
154
155static gboolean spice_char_source_dispatch(GSource *source,
156 GSourceFunc callback, gpointer user_data)
157{
158 GIOFunc func = (GIOFunc)callback;
159
160 return func(NULL, G_IO_OUT, user_data);
161}
162
163GSourceFuncs SpiceCharSourceFuncs = {
164 .prepare = spice_char_source_prepare,
165 .check = spice_char_source_check,
166 .dispatch = spice_char_source_dispatch,
167};
168
169static GSource *spice_chr_add_watch(CharDriverState *chr, GIOCondition cond)
170{
171 SpiceCharDriver *scd = chr->opaque;
172 SpiceCharSource *src;
173
174 assert(cond == G_IO_OUT);
175
176 src = (SpiceCharSource *)g_source_new(&SpiceCharSourceFuncs,
177 sizeof(SpiceCharSource));
178 src->scd = scd;
179
180 return (GSource *)src;
181}
Alon Levycbcc6332011-01-19 10:49:50 +0200182
183static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
184{
185 SpiceCharDriver *s = chr->opaque;
Hans de Goedeae893e52013-04-05 11:30:22 +0200186 int read_bytes;
Alon Levycbcc6332011-01-19 10:49:50 +0200187
Alon Levycbcc6332011-01-19 10:49:50 +0200188 assert(s->datalen == 0);
Alon Levyb010cec2013-04-05 11:30:23 +0200189 s->datapos = buf;
Alon Levycbcc6332011-01-19 10:49:50 +0200190 s->datalen = len;
191 spice_server_char_device_wakeup(&s->sin);
Hans de Goedeae893e52013-04-05 11:30:22 +0200192 read_bytes = len - s->datalen;
193 if (read_bytes != len) {
194 /* We'll get passed in the unconsumed data with the next call */
195 s->datalen = 0;
196 s->datapos = NULL;
197 s->blocked = true;
198 }
199 return read_bytes;
Alon Levycbcc6332011-01-19 10:49:50 +0200200}
201
202static void spice_chr_close(struct CharDriverState *chr)
203{
204 SpiceCharDriver *s = chr->opaque;
205
Alon Levycbcc6332011-01-19 10:49:50 +0200206 vmc_unregister_interface(s);
Marc-André Lureau7a5448c2012-12-05 16:15:35 +0100207 QLIST_REMOVE(s, next);
Hans de Goede5e9b4732013-03-13 10:41:31 +0100208
209 g_free((char *)s->sin.subtype);
210#if SPICE_SERVER_VERSION >= 0x000c02
211 g_free((char *)s->sin.portname);
212#endif
Anthony Liguori7267c092011-08-20 22:09:37 -0500213 g_free(s);
Alon Levycbcc6332011-01-19 10:49:50 +0200214}
215
Hans de Goede574b7112013-03-26 11:07:58 +0100216static void spice_chr_set_fe_open(struct CharDriverState *chr, int fe_open)
Hans de Goedecd8f7df2011-03-24 11:12:04 +0100217{
218 SpiceCharDriver *s = chr->opaque;
Hans de Goede574b7112013-03-26 11:07:58 +0100219 if (fe_open) {
220 vmc_register_interface(s);
221 } else {
222 vmc_unregister_interface(s);
223 }
Hans de Goedecd8f7df2011-03-24 11:12:04 +0100224}
225
Alon Levycbcc6332011-01-19 10:49:50 +0200226static void print_allowed_subtypes(void)
227{
228 const char** psubtype;
229 int i;
230
231 fprintf(stderr, "allowed names: ");
232 for(i=0, psubtype = spice_server_char_device_recognized_subtypes();
233 *psubtype != NULL; ++psubtype, ++i) {
234 if (i == 0) {
235 fprintf(stderr, "%s", *psubtype);
236 } else {
237 fprintf(stderr, ", %s", *psubtype);
238 }
239 }
240 fprintf(stderr, "\n");
241}
242
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100243static CharDriverState *chr_open(const char *subtype)
Alon Levycbcc6332011-01-19 10:49:50 +0200244{
245 CharDriverState *chr;
246 SpiceCharDriver *s;
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100247
248 chr = g_malloc0(sizeof(CharDriverState));
249 s = g_malloc0(sizeof(SpiceCharDriver));
250 s->chr = chr;
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100251 s->active = false;
Hans de Goede5e9b4732013-03-13 10:41:31 +0100252 s->sin.subtype = g_strdup(subtype);
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100253 chr->opaque = s;
254 chr->chr_write = spice_chr_write;
Hans de Goedeae893e52013-04-05 11:30:22 +0200255 chr->chr_add_watch = spice_chr_add_watch;
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100256 chr->chr_close = spice_chr_close;
Hans de Goede574b7112013-03-26 11:07:58 +0100257 chr->chr_set_fe_open = spice_chr_set_fe_open;
Michael Rothbd5c51e2013-06-07 15:19:53 -0500258 chr->explicit_be_open = true;
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100259
Marc-André Lureau7a5448c2012-12-05 16:15:35 +0100260 QLIST_INSERT_HEAD(&spice_chars, s, next);
261
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100262 return chr;
263}
264
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100265CharDriverState *qemu_chr_open_spice_vmc(const char *type)
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100266{
Marc-André Lureau71b423f2012-12-05 16:15:33 +0100267 const char **psubtype = spice_server_char_device_recognized_subtypes();
Alon Levycbcc6332011-01-19 10:49:50 +0200268
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100269 if (type == NULL) {
Alon Levycbcc6332011-01-19 10:49:50 +0200270 fprintf(stderr, "spice-qemu-char: missing name parameter\n");
271 print_allowed_subtypes();
Markus Armbruster1f514702012-02-07 15:09:08 +0100272 return NULL;
Alon Levycbcc6332011-01-19 10:49:50 +0200273 }
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100274 for (; *psubtype != NULL; ++psubtype) {
275 if (strcmp(type, *psubtype) == 0) {
Alon Levycbcc6332011-01-19 10:49:50 +0200276 break;
277 }
278 }
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100279 if (*psubtype == NULL) {
280 fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type);
Alon Levycbcc6332011-01-19 10:49:50 +0200281 print_allowed_subtypes();
Markus Armbruster1f514702012-02-07 15:09:08 +0100282 return NULL;
Alon Levycbcc6332011-01-19 10:49:50 +0200283 }
284
Hans de Goede52fe0e72013-04-05 11:30:21 +0200285 return chr_open(type);
Alon Levycbcc6332011-01-19 10:49:50 +0200286}
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100287
288#if SPICE_SERVER_VERSION >= 0x000c02
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100289CharDriverState *qemu_chr_open_spice_port(const char *name)
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100290{
291 CharDriverState *chr;
292 SpiceCharDriver *s;
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100293
294 if (name == NULL) {
295 fprintf(stderr, "spice-qemu-char: missing name parameter\n");
296 return NULL;
297 }
298
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100299 chr = chr_open("port");
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100300 s = chr->opaque;
Hans de Goede5e9b4732013-03-13 10:41:31 +0100301 s->sin.portname = g_strdup(name);
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100302
303 return chr;
304}
Marc-André Lureauafd0b402012-12-05 16:15:36 +0100305
306void qemu_spice_register_ports(void)
307{
308 SpiceCharDriver *s;
309
310 QLIST_FOREACH(s, &spice_chars, next) {
311 if (s->sin.portname == NULL) {
312 continue;
313 }
314 vmc_register_interface(s);
315 }
316}
Marc-André Lureau5a49d3e2012-12-05 16:15:34 +0100317#endif
Anthony Liguori26c60612013-03-05 23:21:29 +0530318
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100319static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend,
320 Error **errp)
321{
322 const char *name = qemu_opt_get(opts, "name");
323
324 if (name == NULL) {
325 error_setg(errp, "chardev: spice channel: no name given");
326 return;
327 }
328 backend->spicevmc = g_new0(ChardevSpiceChannel, 1);
329 backend->spicevmc->type = g_strdup(name);
330}
331
332static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend,
333 Error **errp)
334{
335 const char *name = qemu_opt_get(opts, "name");
336
337 if (name == NULL) {
338 error_setg(errp, "chardev: spice port: no name given");
339 return;
340 }
341 backend->spiceport = g_new0(ChardevSpicePort, 1);
342 backend->spiceport->fqdn = g_strdup(name);
343}
344
Anthony Liguori26c60612013-03-05 23:21:29 +0530345static void register_types(void)
346{
Gerd Hoffmanncd153e22013-02-25 12:39:06 +0100347 register_char_driver_qapi("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC,
348 qemu_chr_parse_spice_vmc);
349 register_char_driver_qapi("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT,
350 qemu_chr_parse_spice_port);
Anthony Liguori26c60612013-03-05 23:21:29 +0530351}
352
353type_init(register_types);