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Commit | Line | Data |
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e7151f83 AL |
1 | /* |
2 | * xen paravirt framebuffer backend | |
3 | * | |
4 | * Copyright IBM, Corp. 2005-2006 | |
5 | * Copyright Red Hat, Inc. 2006-2008 | |
6 | * | |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com>, | |
9 | * Markus Armbruster <armbru@redhat.com>, | |
10 | * Daniel P. Berrange <berrange@redhat.com>, | |
11 | * Pat Campbell <plc@novell.com>, | |
12 | * Gerd Hoffmann <kraxel@redhat.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; under version 2 of the License. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License along | |
8167ee88 | 24 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
e7151f83 AL |
25 | */ |
26 | ||
27 | #include <stdarg.h> | |
28 | #include <stdlib.h> | |
29 | #include <sys/types.h> | |
30 | #include <fcntl.h> | |
31 | #include <unistd.h> | |
e7151f83 AL |
32 | #include <sys/mman.h> |
33 | #include <errno.h> | |
34 | #include <stdio.h> | |
35 | #include <string.h> | |
36 | #include <time.h> | |
37 | ||
83c9f4ca | 38 | #include "hw/hw.h" |
28ecbaee | 39 | #include "ui/console.h" |
dccfcd0e | 40 | #include "sysemu/char.h" |
0d09e41a | 41 | #include "hw/xen/xen_backend.h" |
e7151f83 | 42 | |
b41f6719 AP |
43 | #include <xen/event_channel.h> |
44 | #include <xen/io/fbif.h> | |
45 | #include <xen/io/kbdif.h> | |
46 | #include <xen/io/protocols.h> | |
47 | ||
e7151f83 AL |
48 | #ifndef BTN_LEFT |
49 | #define BTN_LEFT 0x110 /* from <linux/input.h> */ | |
50 | #endif | |
51 | ||
52 | /* -------------------------------------------------------------------- */ | |
53 | ||
54 | struct common { | |
55 | struct XenDevice xendev; /* must be first */ | |
56 | void *page; | |
c78f7137 | 57 | QemuConsole *con; |
e7151f83 AL |
58 | }; |
59 | ||
60 | struct XenInput { | |
61 | struct common c; | |
62 | int abs_pointer_wanted; /* Whether guest supports absolute pointer */ | |
63 | int button_state; /* Last seen pointer button state */ | |
64 | int extended; | |
65 | QEMUPutMouseEntry *qmouse; | |
66 | }; | |
67 | ||
68 | #define UP_QUEUE 8 | |
69 | ||
70 | struct XenFB { | |
71 | struct common c; | |
72 | size_t fb_len; | |
73 | int row_stride; | |
74 | int depth; | |
75 | int width; | |
76 | int height; | |
77 | int offset; | |
78 | void *pixels; | |
79 | int fbpages; | |
80 | int feature_update; | |
81 | int refresh_period; | |
82 | int bug_trigger; | |
83 | int have_console; | |
84 | int do_resize; | |
85 | ||
86 | struct { | |
87 | int x,y,w,h; | |
88 | } up_rects[UP_QUEUE]; | |
89 | int up_count; | |
90 | int up_fullscreen; | |
91 | }; | |
92 | ||
93 | /* -------------------------------------------------------------------- */ | |
94 | ||
95 | static int common_bind(struct common *c) | |
96 | { | |
97 | int mfn; | |
98 | ||
99 | if (xenstore_read_fe_int(&c->xendev, "page-ref", &mfn) == -1) | |
100 | return -1; | |
101 | if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1) | |
102 | return -1; | |
103 | ||
104 | c->page = xc_map_foreign_range(xen_xc, c->xendev.dom, | |
105 | XC_PAGE_SIZE, | |
106 | PROT_READ | PROT_WRITE, mfn); | |
107 | if (c->page == NULL) | |
108 | return -1; | |
109 | ||
110 | xen_be_bind_evtchn(&c->xendev); | |
111 | xen_be_printf(&c->xendev, 1, "ring mfn %d, remote-port %d, local-port %d\n", | |
112 | mfn, c->xendev.remote_port, c->xendev.local_port); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | static void common_unbind(struct common *c) | |
118 | { | |
119 | xen_be_unbind_evtchn(&c->xendev); | |
120 | if (c->page) { | |
121 | munmap(c->page, XC_PAGE_SIZE); | |
122 | c->page = NULL; | |
123 | } | |
124 | } | |
125 | ||
126 | /* -------------------------------------------------------------------- */ | |
127 | ||
128 | #if 0 | |
129 | /* | |
130 | * These two tables are not needed any more, but left in here | |
131 | * intentionally as documentation, to show how scancode2linux[] | |
132 | * was generated. | |
133 | * | |
134 | * Tables to map from scancode to Linux input layer keycode. | |
135 | * Scancodes are hardware-specific. These maps assumes a | |
136 | * standard AT or PS/2 keyboard which is what QEMU feeds us. | |
137 | */ | |
138 | const unsigned char atkbd_set2_keycode[512] = { | |
139 | ||
140 | 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, | |
141 | 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, | |
142 | 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, | |
143 | 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, | |
144 | 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, | |
145 | 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, | |
146 | 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, | |
147 | 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, | |
148 | ||
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
150 | 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, | |
151 | 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, | |
152 | 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142, | |
153 | 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, | |
154 | 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, | |
155 | 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, | |
156 | 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, | |
157 | ||
158 | }; | |
159 | ||
160 | const unsigned char atkbd_unxlate_table[128] = { | |
161 | ||
162 | 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, | |
163 | 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, | |
164 | 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, | |
165 | 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, | |
166 | 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, | |
167 | 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, | |
168 | 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, | |
169 | 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 | |
170 | ||
171 | }; | |
172 | #endif | |
173 | ||
174 | /* | |
175 | * for (i = 0; i < 128; i++) { | |
176 | * scancode2linux[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]]; | |
177 | * scancode2linux[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80]; | |
178 | * } | |
179 | */ | |
180 | static const unsigned char scancode2linux[512] = { | |
181 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
182 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
183 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
184 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
185 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
186 | 80, 81, 82, 83, 99, 0, 86, 87, 88,117, 0, 0, 95,183,184,185, | |
187 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
188 | 93, 0, 0, 89, 0, 0, 85, 91, 90, 92, 0, 94, 0,124,121, 0, | |
189 | ||
190 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
191 | 165, 0, 0, 0, 0, 0, 0, 0, 0,163, 0, 0, 96, 97, 0, 0, | |
192 | 113,140,164, 0,166, 0, 0, 0, 0, 0,255, 0, 0, 0,114, 0, | |
193 | 115, 0,150, 0, 0, 98,255, 99,100, 0, 0, 0, 0, 0, 0, 0, | |
194 | 0, 0, 0, 0, 0,119,119,102,103,104, 0,105,112,106,118,107, | |
195 | 108,109,110,111, 0, 0, 0, 0, 0, 0, 0,125,126,127,116,142, | |
196 | 0, 0, 0,143, 0,217,156,173,128,159,158,157,155,226, 0,112, | |
197 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
198 | }; | |
199 | ||
200 | /* Send an event to the keyboard frontend driver */ | |
201 | static int xenfb_kbd_event(struct XenInput *xenfb, | |
202 | union xenkbd_in_event *event) | |
203 | { | |
204 | struct xenkbd_page *page = xenfb->c.page; | |
205 | uint32_t prod; | |
206 | ||
207 | if (xenfb->c.xendev.be_state != XenbusStateConnected) | |
208 | return 0; | |
209 | if (!page) | |
210 | return 0; | |
211 | ||
212 | prod = page->in_prod; | |
213 | if (prod - page->in_cons == XENKBD_IN_RING_LEN) { | |
214 | errno = EAGAIN; | |
215 | return -1; | |
216 | } | |
217 | ||
218 | xen_mb(); /* ensure ring space available */ | |
219 | XENKBD_IN_RING_REF(page, prod) = *event; | |
220 | xen_wmb(); /* ensure ring contents visible */ | |
221 | page->in_prod = prod + 1; | |
222 | return xen_be_send_notify(&xenfb->c.xendev); | |
223 | } | |
224 | ||
225 | /* Send a keyboard (or mouse button) event */ | |
226 | static int xenfb_send_key(struct XenInput *xenfb, bool down, int keycode) | |
227 | { | |
228 | union xenkbd_in_event event; | |
229 | ||
230 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); | |
231 | event.type = XENKBD_TYPE_KEY; | |
232 | event.key.pressed = down ? 1 : 0; | |
233 | event.key.keycode = keycode; | |
234 | ||
235 | return xenfb_kbd_event(xenfb, &event); | |
236 | } | |
237 | ||
238 | /* Send a relative mouse movement event */ | |
239 | static int xenfb_send_motion(struct XenInput *xenfb, | |
240 | int rel_x, int rel_y, int rel_z) | |
241 | { | |
242 | union xenkbd_in_event event; | |
243 | ||
244 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); | |
245 | event.type = XENKBD_TYPE_MOTION; | |
246 | event.motion.rel_x = rel_x; | |
247 | event.motion.rel_y = rel_y; | |
248 | #if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030207 | |
249 | event.motion.rel_z = rel_z; | |
250 | #endif | |
251 | ||
252 | return xenfb_kbd_event(xenfb, &event); | |
253 | } | |
254 | ||
255 | /* Send an absolute mouse movement event */ | |
256 | static int xenfb_send_position(struct XenInput *xenfb, | |
257 | int abs_x, int abs_y, int z) | |
258 | { | |
259 | union xenkbd_in_event event; | |
260 | ||
261 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); | |
262 | event.type = XENKBD_TYPE_POS; | |
263 | event.pos.abs_x = abs_x; | |
264 | event.pos.abs_y = abs_y; | |
265 | #if __XEN_LATEST_INTERFACE_VERSION__ == 0x00030207 | |
266 | event.pos.abs_z = z; | |
267 | #endif | |
268 | #if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030208 | |
269 | event.pos.rel_z = z; | |
270 | #endif | |
271 | ||
272 | return xenfb_kbd_event(xenfb, &event); | |
273 | } | |
274 | ||
275 | /* | |
276 | * Send a key event from the client to the guest OS | |
277 | * QEMU gives us a raw scancode from an AT / PS/2 style keyboard. | |
278 | * We have to turn this into a Linux Input layer keycode. | |
279 | * | |
280 | * Extra complexity from the fact that with extended scancodes | |
281 | * (like those produced by arrow keys) this method gets called | |
282 | * twice, but we only want to send a single event. So we have to | |
283 | * track the '0xe0' scancode state & collapse the extended keys | |
284 | * as needed. | |
285 | * | |
286 | * Wish we could just send scancodes straight to the guest which | |
287 | * already has code for dealing with this... | |
288 | */ | |
289 | static void xenfb_key_event(void *opaque, int scancode) | |
290 | { | |
291 | struct XenInput *xenfb = opaque; | |
292 | int down = 1; | |
293 | ||
294 | if (scancode == 0xe0) { | |
295 | xenfb->extended = 1; | |
296 | return; | |
297 | } else if (scancode & 0x80) { | |
298 | scancode &= 0x7f; | |
299 | down = 0; | |
300 | } | |
301 | if (xenfb->extended) { | |
302 | scancode |= 0x80; | |
303 | xenfb->extended = 0; | |
304 | } | |
305 | xenfb_send_key(xenfb, down, scancode2linux[scancode]); | |
306 | } | |
307 | ||
308 | /* | |
309 | * Send a mouse event from the client to the guest OS | |
310 | * | |
311 | * The QEMU mouse can be in either relative, or absolute mode. | |
312 | * Movement is sent separately from button state, which has to | |
313 | * be encoded as virtual key events. We also don't actually get | |
314 | * given any button up/down events, so have to track changes in | |
315 | * the button state. | |
316 | */ | |
317 | static void xenfb_mouse_event(void *opaque, | |
318 | int dx, int dy, int dz, int button_state) | |
319 | { | |
320 | struct XenInput *xenfb = opaque; | |
c78f7137 GH |
321 | DisplaySurface *surface = qemu_console_surface(xenfb->c.con); |
322 | int dw = surface_width(surface); | |
323 | int dh = surface_height(surface); | |
e7151f83 AL |
324 | int i; |
325 | ||
326 | if (xenfb->abs_pointer_wanted) | |
327 | xenfb_send_position(xenfb, | |
328 | dx * (dw - 1) / 0x7fff, | |
329 | dy * (dh - 1) / 0x7fff, | |
330 | dz); | |
331 | else | |
332 | xenfb_send_motion(xenfb, dx, dy, dz); | |
333 | ||
334 | for (i = 0 ; i < 8 ; i++) { | |
335 | int lastDown = xenfb->button_state & (1 << i); | |
336 | int down = button_state & (1 << i); | |
337 | if (down == lastDown) | |
338 | continue; | |
339 | ||
340 | if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0) | |
341 | return; | |
342 | } | |
343 | xenfb->button_state = button_state; | |
344 | } | |
345 | ||
346 | static int input_init(struct XenDevice *xendev) | |
347 | { | |
e7151f83 AL |
348 | xenstore_write_be_int(xendev, "feature-abs-pointer", 1); |
349 | return 0; | |
350 | } | |
351 | ||
384087b2 | 352 | static int input_initialise(struct XenDevice *xendev) |
e7151f83 AL |
353 | { |
354 | struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); | |
355 | int rc; | |
356 | ||
c78f7137 GH |
357 | if (!in->c.con) { |
358 | xen_be_printf(xendev, 1, "ds not set (yet)\n"); | |
359 | return -1; | |
37cdfcf1 SS |
360 | } |
361 | ||
e7151f83 AL |
362 | rc = common_bind(&in->c); |
363 | if (rc != 0) | |
364 | return rc; | |
365 | ||
366 | qemu_add_kbd_event_handler(xenfb_key_event, in); | |
6d646730 JH |
367 | return 0; |
368 | } | |
369 | ||
370 | static void input_connected(struct XenDevice *xendev) | |
371 | { | |
372 | struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); | |
373 | ||
374 | if (xenstore_read_fe_int(xendev, "request-abs-pointer", | |
375 | &in->abs_pointer_wanted) == -1) { | |
376 | in->abs_pointer_wanted = 0; | |
377 | } | |
378 | ||
379 | if (in->qmouse) { | |
380 | qemu_remove_mouse_event_handler(in->qmouse); | |
381 | } | |
e7151f83 AL |
382 | in->qmouse = qemu_add_mouse_event_handler(xenfb_mouse_event, in, |
383 | in->abs_pointer_wanted, | |
384 | "Xen PVFB Mouse"); | |
e7151f83 AL |
385 | } |
386 | ||
387 | static void input_disconnect(struct XenDevice *xendev) | |
388 | { | |
389 | struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); | |
390 | ||
391 | if (in->qmouse) { | |
392 | qemu_remove_mouse_event_handler(in->qmouse); | |
393 | in->qmouse = NULL; | |
394 | } | |
395 | qemu_add_kbd_event_handler(NULL, NULL); | |
396 | common_unbind(&in->c); | |
397 | } | |
398 | ||
399 | static void input_event(struct XenDevice *xendev) | |
400 | { | |
401 | struct XenInput *xenfb = container_of(xendev, struct XenInput, c.xendev); | |
402 | struct xenkbd_page *page = xenfb->c.page; | |
403 | ||
404 | /* We don't understand any keyboard events, so just ignore them. */ | |
405 | if (page->out_prod == page->out_cons) | |
406 | return; | |
407 | page->out_cons = page->out_prod; | |
408 | xen_be_send_notify(&xenfb->c.xendev); | |
409 | } | |
410 | ||
411 | /* -------------------------------------------------------------------- */ | |
412 | ||
413 | static void xenfb_copy_mfns(int mode, int count, unsigned long *dst, void *src) | |
414 | { | |
415 | uint32_t *src32 = src; | |
416 | uint64_t *src64 = src; | |
417 | int i; | |
418 | ||
419 | for (i = 0; i < count; i++) | |
420 | dst[i] = (mode == 32) ? src32[i] : src64[i]; | |
421 | } | |
422 | ||
423 | static int xenfb_map_fb(struct XenFB *xenfb) | |
424 | { | |
425 | struct xenfb_page *page = xenfb->c.page; | |
426 | char *protocol = xenfb->c.xendev.protocol; | |
427 | int n_fbdirs; | |
428 | unsigned long *pgmfns = NULL; | |
429 | unsigned long *fbmfns = NULL; | |
430 | void *map, *pd; | |
431 | int mode, ret = -1; | |
432 | ||
433 | /* default to native */ | |
434 | pd = page->pd; | |
435 | mode = sizeof(unsigned long) * 8; | |
436 | ||
437 | if (!protocol) { | |
438 | /* | |
439 | * Undefined protocol, some guesswork needed. | |
440 | * | |
441 | * Old frontends which don't set the protocol use | |
442 | * one page directory only, thus pd[1] must be zero. | |
443 | * pd[1] of the 32bit struct layout and the lower | |
444 | * 32 bits of pd[0] of the 64bit struct layout have | |
445 | * the same location, so we can check that ... | |
446 | */ | |
447 | uint32_t *ptr32 = NULL; | |
448 | uint32_t *ptr64 = NULL; | |
449 | #if defined(__i386__) | |
450 | ptr32 = (void*)page->pd; | |
451 | ptr64 = ((void*)page->pd) + 4; | |
452 | #elif defined(__x86_64__) | |
453 | ptr32 = ((void*)page->pd) - 4; | |
454 | ptr64 = (void*)page->pd; | |
455 | #endif | |
456 | if (ptr32) { | |
457 | if (ptr32[1] == 0) { | |
458 | mode = 32; | |
459 | pd = ptr32; | |
460 | } else { | |
461 | mode = 64; | |
462 | pd = ptr64; | |
463 | } | |
464 | } | |
465 | #if defined(__x86_64__) | |
466 | } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_32) == 0) { | |
467 | /* 64bit dom0, 32bit domU */ | |
468 | mode = 32; | |
469 | pd = ((void*)page->pd) - 4; | |
470 | #elif defined(__i386__) | |
471 | } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_64) == 0) { | |
472 | /* 32bit dom0, 64bit domU */ | |
473 | mode = 64; | |
474 | pd = ((void*)page->pd) + 4; | |
475 | #endif | |
476 | } | |
477 | ||
478 | if (xenfb->pixels) { | |
479 | munmap(xenfb->pixels, xenfb->fbpages * XC_PAGE_SIZE); | |
480 | xenfb->pixels = NULL; | |
481 | } | |
482 | ||
483 | xenfb->fbpages = (xenfb->fb_len + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE; | |
484 | n_fbdirs = xenfb->fbpages * mode / 8; | |
485 | n_fbdirs = (n_fbdirs + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE; | |
486 | ||
7267c094 AL |
487 | pgmfns = g_malloc0(sizeof(unsigned long) * n_fbdirs); |
488 | fbmfns = g_malloc0(sizeof(unsigned long) * xenfb->fbpages); | |
e7151f83 AL |
489 | |
490 | xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd); | |
491 | map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom, | |
492 | PROT_READ, pgmfns, n_fbdirs); | |
493 | if (map == NULL) | |
494 | goto out; | |
495 | xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map); | |
496 | munmap(map, n_fbdirs * XC_PAGE_SIZE); | |
497 | ||
498 | xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom, | |
499 | PROT_READ | PROT_WRITE, fbmfns, xenfb->fbpages); | |
500 | if (xenfb->pixels == NULL) | |
501 | goto out; | |
502 | ||
503 | ret = 0; /* all is fine */ | |
504 | ||
505 | out: | |
7267c094 AL |
506 | g_free(pgmfns); |
507 | g_free(fbmfns); | |
e7151f83 AL |
508 | return ret; |
509 | } | |
510 | ||
511 | static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim, | |
512 | int width, int height, int depth, | |
513 | size_t fb_len, int offset, int row_stride) | |
514 | { | |
515 | size_t mfn_sz = sizeof(*((struct xenfb_page *)0)->pd); | |
516 | size_t pd_len = sizeof(((struct xenfb_page *)0)->pd) / mfn_sz; | |
517 | size_t fb_pages = pd_len * XC_PAGE_SIZE / mfn_sz; | |
518 | size_t fb_len_max = fb_pages * XC_PAGE_SIZE; | |
519 | int max_width, max_height; | |
520 | ||
521 | if (fb_len_lim > fb_len_max) { | |
522 | xen_be_printf(&xenfb->c.xendev, 0, "fb size limit %zu exceeds %zu, corrected\n", | |
523 | fb_len_lim, fb_len_max); | |
524 | fb_len_lim = fb_len_max; | |
525 | } | |
526 | if (fb_len_lim && fb_len > fb_len_lim) { | |
527 | xen_be_printf(&xenfb->c.xendev, 0, "frontend fb size %zu limited to %zu\n", | |
528 | fb_len, fb_len_lim); | |
529 | fb_len = fb_len_lim; | |
530 | } | |
531 | if (depth != 8 && depth != 16 && depth != 24 && depth != 32) { | |
532 | xen_be_printf(&xenfb->c.xendev, 0, "can't handle frontend fb depth %d\n", | |
533 | depth); | |
534 | return -1; | |
535 | } | |
536 | if (row_stride <= 0 || row_stride > fb_len) { | |
537 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n", row_stride); | |
538 | return -1; | |
539 | } | |
540 | max_width = row_stride / (depth / 8); | |
541 | if (width < 0 || width > max_width) { | |
542 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend width %d limited to %d\n", | |
543 | width, max_width); | |
544 | width = max_width; | |
545 | } | |
546 | if (offset < 0 || offset >= fb_len) { | |
547 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend offset %d (max %zu)\n", | |
548 | offset, fb_len - 1); | |
549 | return -1; | |
550 | } | |
551 | max_height = (fb_len - offset) / row_stride; | |
552 | if (height < 0 || height > max_height) { | |
553 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend height %d limited to %d\n", | |
554 | height, max_height); | |
555 | height = max_height; | |
556 | } | |
557 | xenfb->fb_len = fb_len; | |
558 | xenfb->row_stride = row_stride; | |
559 | xenfb->depth = depth; | |
560 | xenfb->width = width; | |
561 | xenfb->height = height; | |
562 | xenfb->offset = offset; | |
563 | xenfb->up_fullscreen = 1; | |
564 | xenfb->do_resize = 1; | |
565 | xen_be_printf(&xenfb->c.xendev, 1, "framebuffer %dx%dx%d offset %d stride %d\n", | |
566 | width, height, depth, offset, row_stride); | |
567 | return 0; | |
568 | } | |
569 | ||
570 | /* A convenient function for munging pixels between different depths */ | |
571 | #define BLT(SRC_T,DST_T,RSB,GSB,BSB,RDB,GDB,BDB) \ | |
572 | for (line = y ; line < (y+h) ; line++) { \ | |
573 | SRC_T *src = (SRC_T *)(xenfb->pixels \ | |
574 | + xenfb->offset \ | |
575 | + (line * xenfb->row_stride) \ | |
576 | + (x * xenfb->depth / 8)); \ | |
577 | DST_T *dst = (DST_T *)(data \ | |
578 | + (line * linesize) \ | |
579 | + (x * bpp / 8)); \ | |
580 | int col; \ | |
581 | const int RSS = 32 - (RSB + GSB + BSB); \ | |
582 | const int GSS = 32 - (GSB + BSB); \ | |
583 | const int BSS = 32 - (BSB); \ | |
584 | const uint32_t RSM = (~0U) << (32 - RSB); \ | |
585 | const uint32_t GSM = (~0U) << (32 - GSB); \ | |
586 | const uint32_t BSM = (~0U) << (32 - BSB); \ | |
587 | const int RDS = 32 - (RDB + GDB + BDB); \ | |
588 | const int GDS = 32 - (GDB + BDB); \ | |
589 | const int BDS = 32 - (BDB); \ | |
590 | const uint32_t RDM = (~0U) << (32 - RDB); \ | |
591 | const uint32_t GDM = (~0U) << (32 - GDB); \ | |
592 | const uint32_t BDM = (~0U) << (32 - BDB); \ | |
593 | for (col = x ; col < (x+w) ; col++) { \ | |
594 | uint32_t spix = *src; \ | |
595 | *dst = (((spix << RSS) & RSM & RDM) >> RDS) | \ | |
596 | (((spix << GSS) & GSM & GDM) >> GDS) | \ | |
597 | (((spix << BSS) & BSM & BDM) >> BDS); \ | |
598 | src = (SRC_T *) ((unsigned long) src + xenfb->depth / 8); \ | |
599 | dst = (DST_T *) ((unsigned long) dst + bpp / 8); \ | |
600 | } \ | |
601 | } | |
602 | ||
603 | ||
604 | /* | |
605 | * This copies data from the guest framebuffer region, into QEMU's | |
606 | * displaysurface. qemu uses 16 or 32 bpp. In case the pv framebuffer | |
607 | * uses something else we must convert and copy, otherwise we can | |
608 | * supply the buffer directly and no thing here. | |
609 | */ | |
610 | static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h) | |
611 | { | |
c78f7137 | 612 | DisplaySurface *surface = qemu_console_surface(xenfb->c.con); |
e7151f83 | 613 | int line, oops = 0; |
c78f7137 GH |
614 | int bpp = surface_bits_per_pixel(surface); |
615 | int linesize = surface_stride(surface); | |
616 | uint8_t *data = surface_data(surface); | |
e7151f83 | 617 | |
c78f7137 | 618 | if (!is_buffer_shared(surface)) { |
e7151f83 AL |
619 | switch (xenfb->depth) { |
620 | case 8: | |
621 | if (bpp == 16) { | |
622 | BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5); | |
623 | } else if (bpp == 32) { | |
624 | BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8); | |
625 | } else { | |
626 | oops = 1; | |
627 | } | |
628 | break; | |
629 | case 24: | |
630 | if (bpp == 16) { | |
631 | BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5); | |
632 | } else if (bpp == 32) { | |
633 | BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8); | |
634 | } else { | |
635 | oops = 1; | |
636 | } | |
637 | break; | |
638 | default: | |
639 | oops = 1; | |
640 | } | |
641 | } | |
642 | if (oops) /* should not happen */ | |
643 | xen_be_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n", | |
644 | __FUNCTION__, xenfb->depth, bpp); | |
645 | ||
c78f7137 | 646 | dpy_gfx_update(xenfb->c.con, x, y, w, h); |
e7151f83 AL |
647 | } |
648 | ||
c78f7137 | 649 | #if 0 /* def XENFB_TYPE_REFRESH_PERIOD */ |
e7151f83 AL |
650 | static int xenfb_queue_full(struct XenFB *xenfb) |
651 | { | |
652 | struct xenfb_page *page = xenfb->c.page; | |
653 | uint32_t cons, prod; | |
654 | ||
655 | if (!page) | |
656 | return 1; | |
657 | ||
658 | prod = page->in_prod; | |
659 | cons = page->in_cons; | |
660 | return prod - cons == XENFB_IN_RING_LEN; | |
661 | } | |
662 | ||
663 | static void xenfb_send_event(struct XenFB *xenfb, union xenfb_in_event *event) | |
664 | { | |
665 | uint32_t prod; | |
666 | struct xenfb_page *page = xenfb->c.page; | |
667 | ||
668 | prod = page->in_prod; | |
669 | /* caller ensures !xenfb_queue_full() */ | |
670 | xen_mb(); /* ensure ring space available */ | |
671 | XENFB_IN_RING_REF(page, prod) = *event; | |
672 | xen_wmb(); /* ensure ring contents visible */ | |
673 | page->in_prod = prod + 1; | |
674 | ||
675 | xen_be_send_notify(&xenfb->c.xendev); | |
676 | } | |
677 | ||
678 | static void xenfb_send_refresh_period(struct XenFB *xenfb, int period) | |
679 | { | |
680 | union xenfb_in_event event; | |
681 | ||
682 | memset(&event, 0, sizeof(event)); | |
683 | event.type = XENFB_TYPE_REFRESH_PERIOD; | |
684 | event.refresh_period.period = period; | |
685 | xenfb_send_event(xenfb, &event); | |
686 | } | |
687 | #endif | |
688 | ||
689 | /* | |
690 | * Periodic update of display. | |
691 | * Also transmit the refresh interval to the frontend. | |
692 | * | |
693 | * Never ever do any qemu display operations | |
694 | * (resize, screen update) outside this function. | |
695 | * Our screen might be inactive. When asked for | |
696 | * an update we know it is active. | |
697 | */ | |
698 | static void xenfb_update(void *opaque) | |
699 | { | |
700 | struct XenFB *xenfb = opaque; | |
da229ef3 | 701 | DisplaySurface *surface; |
e7151f83 AL |
702 | int i; |
703 | ||
704 | if (xenfb->c.xendev.be_state != XenbusStateConnected) | |
705 | return; | |
706 | ||
707 | if (xenfb->feature_update) { | |
c78f7137 | 708 | #if 0 /* XENFB_TYPE_REFRESH_PERIOD */ |
c433bedf | 709 | struct DisplayChangeListener *l; |
e7151f83 AL |
710 | int period = 99999999; |
711 | int idle = 1; | |
712 | ||
713 | if (xenfb_queue_full(xenfb)) | |
714 | return; | |
715 | ||
87e487a1 | 716 | QLIST_FOREACH(l, &xenfb->c.ds->listeners, next) { |
e7151f83 AL |
717 | if (l->idle) |
718 | continue; | |
719 | idle = 0; | |
720 | if (!l->gui_timer_interval) { | |
721 | if (period > GUI_REFRESH_INTERVAL) | |
722 | period = GUI_REFRESH_INTERVAL; | |
723 | } else { | |
724 | if (period > l->gui_timer_interval) | |
725 | period = l->gui_timer_interval; | |
726 | } | |
727 | } | |
728 | if (idle) | |
729 | period = XENFB_NO_REFRESH; | |
730 | ||
731 | if (xenfb->refresh_period != period) { | |
732 | xenfb_send_refresh_period(xenfb, period); | |
733 | xenfb->refresh_period = period; | |
734 | xen_be_printf(&xenfb->c.xendev, 1, "refresh period: %d\n", period); | |
735 | } | |
736 | #else | |
737 | ; /* nothing */ | |
738 | #endif | |
739 | } else { | |
740 | /* we don't get update notifications, thus use the | |
741 | * sledge hammer approach ... */ | |
742 | xenfb->up_fullscreen = 1; | |
743 | } | |
744 | ||
745 | /* resize if needed */ | |
746 | if (xenfb->do_resize) { | |
747 | xenfb->do_resize = 0; | |
748 | switch (xenfb->depth) { | |
749 | case 16: | |
750 | case 32: | |
751 | /* console.c supported depth -> buffer can be used directly */ | |
da229ef3 | 752 | surface = qemu_create_displaysurface_from |
e7151f83 | 753 | (xenfb->width, xenfb->height, xenfb->depth, |
b1424e03 GH |
754 | xenfb->row_stride, xenfb->pixels + xenfb->offset, |
755 | false); | |
e7151f83 AL |
756 | break; |
757 | default: | |
758 | /* we must convert stuff */ | |
da229ef3 | 759 | surface = qemu_create_displaysurface(xenfb->width, xenfb->height); |
e7151f83 AL |
760 | break; |
761 | } | |
c78f7137 | 762 | dpy_gfx_replace_surface(xenfb->c.con, surface); |
e7151f83 AL |
763 | xen_be_printf(&xenfb->c.xendev, 1, "update: resizing: %dx%d @ %d bpp%s\n", |
764 | xenfb->width, xenfb->height, xenfb->depth, | |
c78f7137 | 765 | is_buffer_shared(surface) ? " (shared)" : ""); |
e7151f83 AL |
766 | xenfb->up_fullscreen = 1; |
767 | } | |
768 | ||
769 | /* run queued updates */ | |
770 | if (xenfb->up_fullscreen) { | |
771 | xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n"); | |
772 | xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height); | |
773 | } else if (xenfb->up_count) { | |
774 | xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n", xenfb->up_count); | |
775 | for (i = 0; i < xenfb->up_count; i++) | |
776 | xenfb_guest_copy(xenfb, | |
777 | xenfb->up_rects[i].x, | |
778 | xenfb->up_rects[i].y, | |
779 | xenfb->up_rects[i].w, | |
780 | xenfb->up_rects[i].h); | |
781 | } else { | |
782 | xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n"); | |
783 | } | |
784 | xenfb->up_count = 0; | |
785 | xenfb->up_fullscreen = 0; | |
786 | } | |
787 | ||
788 | /* QEMU display state changed, so refresh the framebuffer copy */ | |
789 | static void xenfb_invalidate(void *opaque) | |
790 | { | |
791 | struct XenFB *xenfb = opaque; | |
792 | xenfb->up_fullscreen = 1; | |
793 | } | |
794 | ||
795 | static void xenfb_handle_events(struct XenFB *xenfb) | |
796 | { | |
797 | uint32_t prod, cons; | |
798 | struct xenfb_page *page = xenfb->c.page; | |
799 | ||
800 | prod = page->out_prod; | |
801 | if (prod == page->out_cons) | |
802 | return; | |
803 | xen_rmb(); /* ensure we see ring contents up to prod */ | |
804 | for (cons = page->out_cons; cons != prod; cons++) { | |
805 | union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons); | |
806 | int x, y, w, h; | |
807 | ||
808 | switch (event->type) { | |
809 | case XENFB_TYPE_UPDATE: | |
810 | if (xenfb->up_count == UP_QUEUE) | |
811 | xenfb->up_fullscreen = 1; | |
812 | if (xenfb->up_fullscreen) | |
813 | break; | |
814 | x = MAX(event->update.x, 0); | |
815 | y = MAX(event->update.y, 0); | |
816 | w = MIN(event->update.width, xenfb->width - x); | |
817 | h = MIN(event->update.height, xenfb->height - y); | |
818 | if (w < 0 || h < 0) { | |
819 | xen_be_printf(&xenfb->c.xendev, 1, "bogus update ignored\n"); | |
820 | break; | |
821 | } | |
822 | if (x != event->update.x || | |
823 | y != event->update.y || | |
824 | w != event->update.width || | |
825 | h != event->update.height) { | |
826 | xen_be_printf(&xenfb->c.xendev, 1, "bogus update clipped\n"); | |
827 | } | |
828 | if (w == xenfb->width && h > xenfb->height / 2) { | |
829 | /* scroll detector: updated more than 50% of the lines, | |
830 | * don't bother keeping track of the rectangles then */ | |
831 | xenfb->up_fullscreen = 1; | |
832 | } else { | |
833 | xenfb->up_rects[xenfb->up_count].x = x; | |
834 | xenfb->up_rects[xenfb->up_count].y = y; | |
835 | xenfb->up_rects[xenfb->up_count].w = w; | |
836 | xenfb->up_rects[xenfb->up_count].h = h; | |
837 | xenfb->up_count++; | |
838 | } | |
839 | break; | |
840 | #ifdef XENFB_TYPE_RESIZE | |
841 | case XENFB_TYPE_RESIZE: | |
842 | if (xenfb_configure_fb(xenfb, xenfb->fb_len, | |
843 | event->resize.width, | |
844 | event->resize.height, | |
845 | event->resize.depth, | |
846 | xenfb->fb_len, | |
847 | event->resize.offset, | |
848 | event->resize.stride) < 0) | |
849 | break; | |
850 | xenfb_invalidate(xenfb); | |
851 | break; | |
852 | #endif | |
853 | } | |
854 | } | |
855 | xen_mb(); /* ensure we're done with ring contents */ | |
856 | page->out_cons = cons; | |
857 | } | |
858 | ||
859 | static int fb_init(struct XenDevice *xendev) | |
860 | { | |
861 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); | |
862 | ||
863 | fb->refresh_period = -1; | |
864 | ||
865 | #ifdef XENFB_TYPE_RESIZE | |
866 | xenstore_write_be_int(xendev, "feature-resize", 1); | |
867 | #endif | |
868 | return 0; | |
869 | } | |
870 | ||
384087b2 | 871 | static int fb_initialise(struct XenDevice *xendev) |
e7151f83 AL |
872 | { |
873 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); | |
874 | struct xenfb_page *fb_page; | |
875 | int videoram; | |
876 | int rc; | |
877 | ||
878 | if (xenstore_read_fe_int(xendev, "videoram", &videoram) == -1) | |
879 | videoram = 0; | |
880 | ||
881 | rc = common_bind(&fb->c); | |
882 | if (rc != 0) | |
883 | return rc; | |
884 | ||
885 | fb_page = fb->c.page; | |
886 | rc = xenfb_configure_fb(fb, videoram * 1024 * 1024U, | |
887 | fb_page->width, fb_page->height, fb_page->depth, | |
888 | fb_page->mem_length, 0, fb_page->line_length); | |
889 | if (rc != 0) | |
890 | return rc; | |
891 | ||
892 | rc = xenfb_map_fb(fb); | |
893 | if (rc != 0) | |
894 | return rc; | |
895 | ||
896 | #if 0 /* handled in xen_init_display() for now */ | |
897 | if (!fb->have_console) { | |
898 | fb->c.ds = graphic_console_init(xenfb_update, | |
899 | xenfb_invalidate, | |
900 | NULL, | |
901 | NULL, | |
902 | fb); | |
903 | fb->have_console = 1; | |
904 | } | |
905 | #endif | |
906 | ||
907 | if (xenstore_read_fe_int(xendev, "feature-update", &fb->feature_update) == -1) | |
908 | fb->feature_update = 0; | |
909 | if (fb->feature_update) | |
910 | xenstore_write_be_int(xendev, "request-update", 1); | |
911 | ||
912 | xen_be_printf(xendev, 1, "feature-update=%d, videoram=%d\n", | |
913 | fb->feature_update, videoram); | |
914 | return 0; | |
915 | } | |
916 | ||
917 | static void fb_disconnect(struct XenDevice *xendev) | |
918 | { | |
919 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); | |
920 | ||
921 | /* | |
922 | * FIXME: qemu can't un-init gfx display (yet?). | |
923 | * Replacing the framebuffer with anonymous shared memory | |
924 | * instead. This releases the guest pages and keeps qemu happy. | |
925 | */ | |
926 | fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE, | |
927 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, | |
928 | -1, 0); | |
929 | common_unbind(&fb->c); | |
930 | fb->feature_update = 0; | |
931 | fb->bug_trigger = 0; | |
932 | } | |
933 | ||
934 | static void fb_frontend_changed(struct XenDevice *xendev, const char *node) | |
935 | { | |
936 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); | |
937 | ||
938 | /* | |
939 | * Set state to Connected *again* once the frontend switched | |
940 | * to connected. We must trigger the watch a second time to | |
941 | * workaround a frontend bug. | |
942 | */ | |
943 | if (fb->bug_trigger == 0 && strcmp(node, "state") == 0 && | |
944 | xendev->fe_state == XenbusStateConnected && | |
945 | xendev->be_state == XenbusStateConnected) { | |
946 | xen_be_printf(xendev, 2, "re-trigger connected (frontend bug)\n"); | |
947 | xen_be_set_state(xendev, XenbusStateConnected); | |
948 | fb->bug_trigger = 1; /* only once */ | |
949 | } | |
950 | } | |
951 | ||
952 | static void fb_event(struct XenDevice *xendev) | |
953 | { | |
954 | struct XenFB *xenfb = container_of(xendev, struct XenFB, c.xendev); | |
955 | ||
956 | xenfb_handle_events(xenfb); | |
957 | xen_be_send_notify(&xenfb->c.xendev); | |
958 | } | |
959 | ||
960 | /* -------------------------------------------------------------------- */ | |
961 | ||
962 | struct XenDevOps xen_kbdmouse_ops = { | |
963 | .size = sizeof(struct XenInput), | |
964 | .init = input_init, | |
384087b2 | 965 | .initialise = input_initialise, |
6d646730 | 966 | .connected = input_connected, |
e7151f83 AL |
967 | .disconnect = input_disconnect, |
968 | .event = input_event, | |
969 | }; | |
970 | ||
971 | struct XenDevOps xen_framebuffer_ops = { | |
972 | .size = sizeof(struct XenFB), | |
973 | .init = fb_init, | |
384087b2 | 974 | .initialise = fb_initialise, |
e7151f83 AL |
975 | .disconnect = fb_disconnect, |
976 | .event = fb_event, | |
977 | .frontend_changed = fb_frontend_changed, | |
978 | }; | |
979 | ||
980 | /* | |
981 | * FIXME/TODO: Kill this. | |
982 | * Temporary needed while DisplayState reorganization is in flight. | |
983 | */ | |
984 | void xen_init_display(int domid) | |
985 | { | |
986 | struct XenDevice *xfb, *xin; | |
987 | struct XenFB *fb; | |
988 | struct XenInput *in; | |
989 | int i = 0; | |
990 | ||
991 | wait_more: | |
992 | i++; | |
d6f4ade2 | 993 | main_loop_wait(true); |
e7151f83 AL |
994 | xfb = xen_be_find_xendev("vfb", domid, 0); |
995 | xin = xen_be_find_xendev("vkbd", domid, 0); | |
996 | if (!xfb || !xin) { | |
d6f4ade2 PB |
997 | if (i < 256) { |
998 | usleep(10000); | |
e7151f83 | 999 | goto wait_more; |
d6f4ade2 | 1000 | } |
e7151f83 AL |
1001 | xen_be_printf(NULL, 1, "displaystate setup failed\n"); |
1002 | return; | |
1003 | } | |
1004 | ||
1005 | /* vfb */ | |
1006 | fb = container_of(xfb, struct XenFB, c.xendev); | |
c78f7137 GH |
1007 | fb->c.con = graphic_console_init(xenfb_update, |
1008 | xenfb_invalidate, | |
1009 | NULL, | |
c78f7137 | 1010 | fb); |
e7151f83 AL |
1011 | fb->have_console = 1; |
1012 | ||
1013 | /* vkbd */ | |
1014 | in = container_of(xin, struct XenInput, c.xendev); | |
c78f7137 | 1015 | in->c.con = fb->c.con; |
e7151f83 AL |
1016 | |
1017 | /* retry ->init() */ | |
1018 | xen_be_check_state(xin); | |
1019 | xen_be_check_state(xfb); | |
1020 | } |