xref: /openbmc/qemu/ui/console.c (revision 64c9a921)
1 /*
2  * QEMU graphical console
3  *
4  * Copyright (c) 2004 Fabrice Bellard
5  *
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:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
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
22  * THE SOFTWARE.
23  */
24 
25 #include "qemu/osdep.h"
26 #include "ui/console.h"
27 #include "hw/qdev-core.h"
28 #include "qapi/error.h"
29 #include "qapi/qapi-commands-ui.h"
30 #include "qemu/module.h"
31 #include "qemu/option.h"
32 #include "qemu/timer.h"
33 #include "chardev/char-fe.h"
34 #include "trace.h"
35 #include "exec/memory.h"
36 #include "io/channel-file.h"
37 #include "qom/object.h"
38 
39 #define DEFAULT_BACKSCROLL 512
40 #define CONSOLE_CURSOR_PERIOD 500
41 
42 typedef struct TextAttributes {
43     uint8_t fgcol:4;
44     uint8_t bgcol:4;
45     uint8_t bold:1;
46     uint8_t uline:1;
47     uint8_t blink:1;
48     uint8_t invers:1;
49     uint8_t unvisible:1;
50 } TextAttributes;
51 
52 typedef struct TextCell {
53     uint8_t ch;
54     TextAttributes t_attrib;
55 } TextCell;
56 
57 #define MAX_ESC_PARAMS 3
58 
59 enum TTYState {
60     TTY_STATE_NORM,
61     TTY_STATE_ESC,
62     TTY_STATE_CSI,
63 };
64 
65 typedef struct QEMUFIFO {
66     uint8_t *buf;
67     int buf_size;
68     int count, wptr, rptr;
69 } QEMUFIFO;
70 
71 static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
72 {
73     int l, len;
74 
75     l = f->buf_size - f->count;
76     if (len1 > l)
77         len1 = l;
78     len = len1;
79     while (len > 0) {
80         l = f->buf_size - f->wptr;
81         if (l > len)
82             l = len;
83         memcpy(f->buf + f->wptr, buf, l);
84         f->wptr += l;
85         if (f->wptr >= f->buf_size)
86             f->wptr = 0;
87         buf += l;
88         len -= l;
89     }
90     f->count += len1;
91     return len1;
92 }
93 
94 static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
95 {
96     int l, len;
97 
98     if (len1 > f->count)
99         len1 = f->count;
100     len = len1;
101     while (len > 0) {
102         l = f->buf_size - f->rptr;
103         if (l > len)
104             l = len;
105         memcpy(buf, f->buf + f->rptr, l);
106         f->rptr += l;
107         if (f->rptr >= f->buf_size)
108             f->rptr = 0;
109         buf += l;
110         len -= l;
111     }
112     f->count -= len1;
113     return len1;
114 }
115 
116 typedef enum {
117     GRAPHIC_CONSOLE,
118     TEXT_CONSOLE,
119     TEXT_CONSOLE_FIXED_SIZE
120 } console_type_t;
121 
122 struct QemuConsole {
123     Object parent;
124 
125     int index;
126     console_type_t console_type;
127     DisplayState *ds;
128     DisplaySurface *surface;
129     int dcls;
130     DisplayChangeListener *gl;
131     bool gl_block;
132     int window_id;
133 
134     /* Graphic console state.  */
135     Object *device;
136     uint32_t head;
137     QemuUIInfo ui_info;
138     QEMUTimer *ui_timer;
139     const GraphicHwOps *hw_ops;
140     void *hw;
141 
142     /* Text console state */
143     int width;
144     int height;
145     int total_height;
146     int backscroll_height;
147     int x, y;
148     int x_saved, y_saved;
149     int y_displayed;
150     int y_base;
151     TextAttributes t_attrib_default; /* default text attributes */
152     TextAttributes t_attrib; /* currently active text attributes */
153     TextCell *cells;
154     int text_x[2], text_y[2], cursor_invalidate;
155     int echo;
156 
157     int update_x0;
158     int update_y0;
159     int update_x1;
160     int update_y1;
161 
162     enum TTYState state;
163     int esc_params[MAX_ESC_PARAMS];
164     int nb_esc_params;
165 
166     Chardev *chr;
167     /* fifo for key pressed */
168     QEMUFIFO out_fifo;
169     uint8_t out_fifo_buf[16];
170     QEMUTimer *kbd_timer;
171     CoQueue dump_queue;
172 
173     QTAILQ_ENTRY(QemuConsole) next;
174 };
175 
176 struct DisplayState {
177     QEMUTimer *gui_timer;
178     uint64_t last_update;
179     uint64_t update_interval;
180     bool refreshing;
181     bool have_gfx;
182     bool have_text;
183 
184     QLIST_HEAD(, DisplayChangeListener) listeners;
185 };
186 
187 static DisplayState *display_state;
188 static QemuConsole *active_console;
189 static QTAILQ_HEAD(, QemuConsole) consoles =
190     QTAILQ_HEAD_INITIALIZER(consoles);
191 static bool cursor_visible_phase;
192 static QEMUTimer *cursor_timer;
193 
194 static void text_console_do_init(Chardev *chr, DisplayState *ds);
195 static void dpy_refresh(DisplayState *s);
196 static DisplayState *get_alloc_displaystate(void);
197 static void text_console_update_cursor_timer(void);
198 static void text_console_update_cursor(void *opaque);
199 
200 static void gui_update(void *opaque)
201 {
202     uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
203     uint64_t dcl_interval;
204     DisplayState *ds = opaque;
205     DisplayChangeListener *dcl;
206     QemuConsole *con;
207 
208     ds->refreshing = true;
209     dpy_refresh(ds);
210     ds->refreshing = false;
211 
212     QLIST_FOREACH(dcl, &ds->listeners, next) {
213         dcl_interval = dcl->update_interval ?
214             dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
215         if (interval > dcl_interval) {
216             interval = dcl_interval;
217         }
218     }
219     if (ds->update_interval != interval) {
220         ds->update_interval = interval;
221         QTAILQ_FOREACH(con, &consoles, next) {
222             if (con->hw_ops->update_interval) {
223                 con->hw_ops->update_interval(con->hw, interval);
224             }
225         }
226         trace_console_refresh(interval);
227     }
228     ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
229     timer_mod(ds->gui_timer, ds->last_update + interval);
230 }
231 
232 static void gui_setup_refresh(DisplayState *ds)
233 {
234     DisplayChangeListener *dcl;
235     bool need_timer = false;
236     bool have_gfx = false;
237     bool have_text = false;
238 
239     QLIST_FOREACH(dcl, &ds->listeners, next) {
240         if (dcl->ops->dpy_refresh != NULL) {
241             need_timer = true;
242         }
243         if (dcl->ops->dpy_gfx_update != NULL) {
244             have_gfx = true;
245         }
246         if (dcl->ops->dpy_text_update != NULL) {
247             have_text = true;
248         }
249     }
250 
251     if (need_timer && ds->gui_timer == NULL) {
252         ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
253         timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
254     }
255     if (!need_timer && ds->gui_timer != NULL) {
256         timer_free(ds->gui_timer);
257         ds->gui_timer = NULL;
258     }
259 
260     ds->have_gfx = have_gfx;
261     ds->have_text = have_text;
262 }
263 
264 void graphic_hw_update_done(QemuConsole *con)
265 {
266     if (con) {
267         qemu_co_queue_restart_all(&con->dump_queue);
268     }
269 }
270 
271 void graphic_hw_update(QemuConsole *con)
272 {
273     bool async = false;
274     con = con ? con : active_console;
275     if (!con) {
276         return;
277     }
278     if (con->hw_ops->gfx_update) {
279         con->hw_ops->gfx_update(con->hw);
280         async = con->hw_ops->gfx_update_async;
281     }
282     if (!async) {
283         graphic_hw_update_done(con);
284     }
285 }
286 
287 void graphic_hw_gl_block(QemuConsole *con, bool block)
288 {
289     assert(con != NULL);
290 
291     con->gl_block = block;
292     if (con->hw_ops->gl_block) {
293         con->hw_ops->gl_block(con->hw, block);
294     }
295 }
296 
297 void graphic_hw_gl_flushed(QemuConsole *con)
298 {
299     assert(con != NULL);
300 
301     if (con->hw_ops->gl_flushed) {
302         con->hw_ops->gl_flushed(con->hw);
303     }
304 }
305 
306 int qemu_console_get_window_id(QemuConsole *con)
307 {
308     return con->window_id;
309 }
310 
311 void qemu_console_set_window_id(QemuConsole *con, int window_id)
312 {
313     con->window_id = window_id;
314 }
315 
316 void graphic_hw_invalidate(QemuConsole *con)
317 {
318     if (!con) {
319         con = active_console;
320     }
321     if (con && con->hw_ops->invalidate) {
322         con->hw_ops->invalidate(con->hw);
323     }
324 }
325 
326 static bool ppm_save(int fd, pixman_image_t *image, Error **errp)
327 {
328     int width = pixman_image_get_width(image);
329     int height = pixman_image_get_height(image);
330     g_autoptr(Object) ioc = OBJECT(qio_channel_file_new_fd(fd));
331     g_autofree char *header = NULL;
332     g_autoptr(pixman_image_t) linebuf = NULL;
333     int y;
334 
335     trace_ppm_save(fd, image);
336 
337     header = g_strdup_printf("P6\n%d %d\n%d\n", width, height, 255);
338     if (qio_channel_write_all(QIO_CHANNEL(ioc),
339                               header, strlen(header), errp) < 0) {
340         return false;
341     }
342 
343     linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
344     for (y = 0; y < height; y++) {
345         qemu_pixman_linebuf_fill(linebuf, image, width, 0, y);
346         if (qio_channel_write_all(QIO_CHANNEL(ioc),
347                                   (char *)pixman_image_get_data(linebuf),
348                                   pixman_image_get_stride(linebuf), errp) < 0) {
349             return false;
350         }
351     }
352 
353     return true;
354 }
355 
356 static void graphic_hw_update_bh(void *con)
357 {
358     graphic_hw_update(con);
359 }
360 
361 /* Safety: coroutine-only, concurrent-coroutine safe, main thread only */
362 void coroutine_fn
363 qmp_screendump(const char *filename, bool has_device, const char *device,
364                bool has_head, int64_t head, Error **errp)
365 {
366     g_autoptr(pixman_image_t) image = NULL;
367     QemuConsole *con;
368     DisplaySurface *surface;
369     int fd;
370 
371     if (has_device) {
372         con = qemu_console_lookup_by_device_name(device, has_head ? head : 0,
373                                                  errp);
374         if (!con) {
375             return;
376         }
377     } else {
378         if (has_head) {
379             error_setg(errp, "'head' must be specified together with 'device'");
380             return;
381         }
382         con = qemu_console_lookup_by_index(0);
383         if (!con) {
384             error_setg(errp, "There is no console to take a screendump from");
385             return;
386         }
387     }
388 
389     if (qemu_co_queue_empty(&con->dump_queue)) {
390         /* Defer the update, it will restart the pending coroutines */
391         aio_bh_schedule_oneshot(qemu_get_aio_context(),
392                                 graphic_hw_update_bh, con);
393     }
394     qemu_co_queue_wait(&con->dump_queue, NULL);
395 
396     /*
397      * All pending coroutines are woken up, while the BQL is held.  No
398      * further graphic update are possible until it is released.  Take
399      * an image ref before that.
400      */
401     surface = qemu_console_surface(con);
402     if (!surface) {
403         error_setg(errp, "no surface");
404         return;
405     }
406     image = pixman_image_ref(surface->image);
407 
408     fd = qemu_open_old(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
409     if (fd == -1) {
410         error_setg(errp, "failed to open file '%s': %s", filename,
411                    strerror(errno));
412         return;
413     }
414 
415     /*
416      * The image content could potentially be updated as the coroutine
417      * yields and releases the BQL. It could produce corrupted dump, but
418      * it should be otherwise safe.
419      */
420     if (!ppm_save(fd, image, errp)) {
421         qemu_unlink(filename);
422     }
423 }
424 
425 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
426 {
427     if (!con) {
428         con = active_console;
429     }
430     if (con && con->hw_ops->text_update) {
431         con->hw_ops->text_update(con->hw, chardata);
432     }
433 }
434 
435 static void vga_fill_rect(QemuConsole *con,
436                           int posx, int posy, int width, int height,
437                           pixman_color_t color)
438 {
439     DisplaySurface *surface = qemu_console_surface(con);
440     pixman_rectangle16_t rect = {
441         .x = posx, .y = posy, .width = width, .height = height
442     };
443 
444     pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
445                                  &color, 1, &rect);
446 }
447 
448 /* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
449 static void vga_bitblt(QemuConsole *con,
450                        int xs, int ys, int xd, int yd, int w, int h)
451 {
452     DisplaySurface *surface = qemu_console_surface(con);
453 
454     pixman_image_composite(PIXMAN_OP_SRC,
455                            surface->image, NULL, surface->image,
456                            xs, ys, 0, 0, xd, yd, w, h);
457 }
458 
459 /***********************************************************/
460 /* basic char display */
461 
462 #define FONT_HEIGHT 16
463 #define FONT_WIDTH 8
464 
465 #include "vgafont.h"
466 
467 #define QEMU_RGB(r, g, b)                                               \
468     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
469 
470 static const pixman_color_t color_table_rgb[2][8] = {
471     {   /* dark */
472         [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
473         [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xaa),  /* blue */
474         [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xaa, 0x00),  /* green */
475         [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xaa, 0xaa),  /* cyan */
476         [QEMU_COLOR_RED]     = QEMU_RGB(0xaa, 0x00, 0x00),  /* red */
477         [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xaa, 0x00, 0xaa),  /* magenta */
478         [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xaa, 0xaa, 0x00),  /* yellow */
479         [QEMU_COLOR_WHITE]   = QEMU_RGB(0xaa, 0xaa, 0xaa),  /* white */
480     },
481     {   /* bright */
482         [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
483         [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xff),  /* blue */
484         [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xff, 0x00),  /* green */
485         [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xff, 0xff),  /* cyan */
486         [QEMU_COLOR_RED]     = QEMU_RGB(0xff, 0x00, 0x00),  /* red */
487         [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xff, 0x00, 0xff),  /* magenta */
488         [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xff, 0xff, 0x00),  /* yellow */
489         [QEMU_COLOR_WHITE]   = QEMU_RGB(0xff, 0xff, 0xff),  /* white */
490     }
491 };
492 
493 static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
494                           TextAttributes *t_attrib)
495 {
496     static pixman_image_t *glyphs[256];
497     DisplaySurface *surface = qemu_console_surface(s);
498     pixman_color_t fgcol, bgcol;
499 
500     if (t_attrib->invers) {
501         bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
502         fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
503     } else {
504         fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
505         bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
506     }
507 
508     if (!glyphs[ch]) {
509         glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
510     }
511     qemu_pixman_glyph_render(glyphs[ch], surface->image,
512                              &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
513 }
514 
515 static void text_console_resize(QemuConsole *s)
516 {
517     TextCell *cells, *c, *c1;
518     int w1, x, y, last_width;
519 
520     last_width = s->width;
521     s->width = surface_width(s->surface) / FONT_WIDTH;
522     s->height = surface_height(s->surface) / FONT_HEIGHT;
523 
524     w1 = last_width;
525     if (s->width < w1)
526         w1 = s->width;
527 
528     cells = g_new(TextCell, s->width * s->total_height + 1);
529     for(y = 0; y < s->total_height; y++) {
530         c = &cells[y * s->width];
531         if (w1 > 0) {
532             c1 = &s->cells[y * last_width];
533             for(x = 0; x < w1; x++) {
534                 *c++ = *c1++;
535             }
536         }
537         for(x = w1; x < s->width; x++) {
538             c->ch = ' ';
539             c->t_attrib = s->t_attrib_default;
540             c++;
541         }
542     }
543     g_free(s->cells);
544     s->cells = cells;
545 }
546 
547 static inline void text_update_xy(QemuConsole *s, int x, int y)
548 {
549     s->text_x[0] = MIN(s->text_x[0], x);
550     s->text_x[1] = MAX(s->text_x[1], x);
551     s->text_y[0] = MIN(s->text_y[0], y);
552     s->text_y[1] = MAX(s->text_y[1], y);
553 }
554 
555 static void invalidate_xy(QemuConsole *s, int x, int y)
556 {
557     if (!qemu_console_is_visible(s)) {
558         return;
559     }
560     if (s->update_x0 > x * FONT_WIDTH)
561         s->update_x0 = x * FONT_WIDTH;
562     if (s->update_y0 > y * FONT_HEIGHT)
563         s->update_y0 = y * FONT_HEIGHT;
564     if (s->update_x1 < (x + 1) * FONT_WIDTH)
565         s->update_x1 = (x + 1) * FONT_WIDTH;
566     if (s->update_y1 < (y + 1) * FONT_HEIGHT)
567         s->update_y1 = (y + 1) * FONT_HEIGHT;
568 }
569 
570 static void update_xy(QemuConsole *s, int x, int y)
571 {
572     TextCell *c;
573     int y1, y2;
574 
575     if (s->ds->have_text) {
576         text_update_xy(s, x, y);
577     }
578 
579     y1 = (s->y_base + y) % s->total_height;
580     y2 = y1 - s->y_displayed;
581     if (y2 < 0) {
582         y2 += s->total_height;
583     }
584     if (y2 < s->height) {
585         if (x >= s->width) {
586             x = s->width - 1;
587         }
588         c = &s->cells[y1 * s->width + x];
589         vga_putcharxy(s, x, y2, c->ch,
590                       &(c->t_attrib));
591         invalidate_xy(s, x, y2);
592     }
593 }
594 
595 static void console_show_cursor(QemuConsole *s, int show)
596 {
597     TextCell *c;
598     int y, y1;
599     int x = s->x;
600 
601     if (s->ds->have_text) {
602         s->cursor_invalidate = 1;
603     }
604 
605     if (x >= s->width) {
606         x = s->width - 1;
607     }
608     y1 = (s->y_base + s->y) % s->total_height;
609     y = y1 - s->y_displayed;
610     if (y < 0) {
611         y += s->total_height;
612     }
613     if (y < s->height) {
614         c = &s->cells[y1 * s->width + x];
615         if (show && cursor_visible_phase) {
616             TextAttributes t_attrib = s->t_attrib_default;
617             t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
618             vga_putcharxy(s, x, y, c->ch, &t_attrib);
619         } else {
620             vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
621         }
622         invalidate_xy(s, x, y);
623     }
624 }
625 
626 static void console_refresh(QemuConsole *s)
627 {
628     DisplaySurface *surface = qemu_console_surface(s);
629     TextCell *c;
630     int x, y, y1;
631 
632     if (s->ds->have_text) {
633         s->text_x[0] = 0;
634         s->text_y[0] = 0;
635         s->text_x[1] = s->width - 1;
636         s->text_y[1] = s->height - 1;
637         s->cursor_invalidate = 1;
638     }
639 
640     vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
641                   color_table_rgb[0][QEMU_COLOR_BLACK]);
642     y1 = s->y_displayed;
643     for (y = 0; y < s->height; y++) {
644         c = s->cells + y1 * s->width;
645         for (x = 0; x < s->width; x++) {
646             vga_putcharxy(s, x, y, c->ch,
647                           &(c->t_attrib));
648             c++;
649         }
650         if (++y1 == s->total_height) {
651             y1 = 0;
652         }
653     }
654     console_show_cursor(s, 1);
655     dpy_gfx_update(s, 0, 0,
656                    surface_width(surface), surface_height(surface));
657 }
658 
659 static void console_scroll(QemuConsole *s, int ydelta)
660 {
661     int i, y1;
662 
663     if (ydelta > 0) {
664         for(i = 0; i < ydelta; i++) {
665             if (s->y_displayed == s->y_base)
666                 break;
667             if (++s->y_displayed == s->total_height)
668                 s->y_displayed = 0;
669         }
670     } else {
671         ydelta = -ydelta;
672         i = s->backscroll_height;
673         if (i > s->total_height - s->height)
674             i = s->total_height - s->height;
675         y1 = s->y_base - i;
676         if (y1 < 0)
677             y1 += s->total_height;
678         for(i = 0; i < ydelta; i++) {
679             if (s->y_displayed == y1)
680                 break;
681             if (--s->y_displayed < 0)
682                 s->y_displayed = s->total_height - 1;
683         }
684     }
685     console_refresh(s);
686 }
687 
688 static void console_put_lf(QemuConsole *s)
689 {
690     TextCell *c;
691     int x, y1;
692 
693     s->y++;
694     if (s->y >= s->height) {
695         s->y = s->height - 1;
696 
697         if (s->y_displayed == s->y_base) {
698             if (++s->y_displayed == s->total_height)
699                 s->y_displayed = 0;
700         }
701         if (++s->y_base == s->total_height)
702             s->y_base = 0;
703         if (s->backscroll_height < s->total_height)
704             s->backscroll_height++;
705         y1 = (s->y_base + s->height - 1) % s->total_height;
706         c = &s->cells[y1 * s->width];
707         for(x = 0; x < s->width; x++) {
708             c->ch = ' ';
709             c->t_attrib = s->t_attrib_default;
710             c++;
711         }
712         if (s->y_displayed == s->y_base) {
713             if (s->ds->have_text) {
714                 s->text_x[0] = 0;
715                 s->text_y[0] = 0;
716                 s->text_x[1] = s->width - 1;
717                 s->text_y[1] = s->height - 1;
718             }
719 
720             vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
721                        s->width * FONT_WIDTH,
722                        (s->height - 1) * FONT_HEIGHT);
723             vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
724                           s->width * FONT_WIDTH, FONT_HEIGHT,
725                           color_table_rgb[0][s->t_attrib_default.bgcol]);
726             s->update_x0 = 0;
727             s->update_y0 = 0;
728             s->update_x1 = s->width * FONT_WIDTH;
729             s->update_y1 = s->height * FONT_HEIGHT;
730         }
731     }
732 }
733 
734 /* Set console attributes depending on the current escape codes.
735  * NOTE: I know this code is not very efficient (checking every color for it
736  * self) but it is more readable and better maintainable.
737  */
738 static void console_handle_escape(QemuConsole *s)
739 {
740     int i;
741 
742     for (i=0; i<s->nb_esc_params; i++) {
743         switch (s->esc_params[i]) {
744             case 0: /* reset all console attributes to default */
745                 s->t_attrib = s->t_attrib_default;
746                 break;
747             case 1:
748                 s->t_attrib.bold = 1;
749                 break;
750             case 4:
751                 s->t_attrib.uline = 1;
752                 break;
753             case 5:
754                 s->t_attrib.blink = 1;
755                 break;
756             case 7:
757                 s->t_attrib.invers = 1;
758                 break;
759             case 8:
760                 s->t_attrib.unvisible = 1;
761                 break;
762             case 22:
763                 s->t_attrib.bold = 0;
764                 break;
765             case 24:
766                 s->t_attrib.uline = 0;
767                 break;
768             case 25:
769                 s->t_attrib.blink = 0;
770                 break;
771             case 27:
772                 s->t_attrib.invers = 0;
773                 break;
774             case 28:
775                 s->t_attrib.unvisible = 0;
776                 break;
777             /* set foreground color */
778             case 30:
779                 s->t_attrib.fgcol = QEMU_COLOR_BLACK;
780                 break;
781             case 31:
782                 s->t_attrib.fgcol = QEMU_COLOR_RED;
783                 break;
784             case 32:
785                 s->t_attrib.fgcol = QEMU_COLOR_GREEN;
786                 break;
787             case 33:
788                 s->t_attrib.fgcol = QEMU_COLOR_YELLOW;
789                 break;
790             case 34:
791                 s->t_attrib.fgcol = QEMU_COLOR_BLUE;
792                 break;
793             case 35:
794                 s->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
795                 break;
796             case 36:
797                 s->t_attrib.fgcol = QEMU_COLOR_CYAN;
798                 break;
799             case 37:
800                 s->t_attrib.fgcol = QEMU_COLOR_WHITE;
801                 break;
802             /* set background color */
803             case 40:
804                 s->t_attrib.bgcol = QEMU_COLOR_BLACK;
805                 break;
806             case 41:
807                 s->t_attrib.bgcol = QEMU_COLOR_RED;
808                 break;
809             case 42:
810                 s->t_attrib.bgcol = QEMU_COLOR_GREEN;
811                 break;
812             case 43:
813                 s->t_attrib.bgcol = QEMU_COLOR_YELLOW;
814                 break;
815             case 44:
816                 s->t_attrib.bgcol = QEMU_COLOR_BLUE;
817                 break;
818             case 45:
819                 s->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
820                 break;
821             case 46:
822                 s->t_attrib.bgcol = QEMU_COLOR_CYAN;
823                 break;
824             case 47:
825                 s->t_attrib.bgcol = QEMU_COLOR_WHITE;
826                 break;
827         }
828     }
829 }
830 
831 static void console_clear_xy(QemuConsole *s, int x, int y)
832 {
833     int y1 = (s->y_base + y) % s->total_height;
834     if (x >= s->width) {
835         x = s->width - 1;
836     }
837     TextCell *c = &s->cells[y1 * s->width + x];
838     c->ch = ' ';
839     c->t_attrib = s->t_attrib_default;
840     update_xy(s, x, y);
841 }
842 
843 static void console_put_one(QemuConsole *s, int ch)
844 {
845     TextCell *c;
846     int y1;
847     if (s->x >= s->width) {
848         /* line wrap */
849         s->x = 0;
850         console_put_lf(s);
851     }
852     y1 = (s->y_base + s->y) % s->total_height;
853     c = &s->cells[y1 * s->width + s->x];
854     c->ch = ch;
855     c->t_attrib = s->t_attrib;
856     update_xy(s, s->x, s->y);
857     s->x++;
858 }
859 
860 static void console_respond_str(QemuConsole *s, const char *buf)
861 {
862     while (*buf) {
863         console_put_one(s, *buf);
864         buf++;
865     }
866 }
867 
868 /* set cursor, checking bounds */
869 static void set_cursor(QemuConsole *s, int x, int y)
870 {
871     if (x < 0) {
872         x = 0;
873     }
874     if (y < 0) {
875         y = 0;
876     }
877     if (y >= s->height) {
878         y = s->height - 1;
879     }
880     if (x >= s->width) {
881         x = s->width - 1;
882     }
883 
884     s->x = x;
885     s->y = y;
886 }
887 
888 static void console_putchar(QemuConsole *s, int ch)
889 {
890     int i;
891     int x, y;
892     char response[40];
893 
894     switch(s->state) {
895     case TTY_STATE_NORM:
896         switch(ch) {
897         case '\r':  /* carriage return */
898             s->x = 0;
899             break;
900         case '\n':  /* newline */
901             console_put_lf(s);
902             break;
903         case '\b':  /* backspace */
904             if (s->x > 0)
905                 s->x--;
906             break;
907         case '\t':  /* tabspace */
908             if (s->x + (8 - (s->x % 8)) > s->width) {
909                 s->x = 0;
910                 console_put_lf(s);
911             } else {
912                 s->x = s->x + (8 - (s->x % 8));
913             }
914             break;
915         case '\a':  /* alert aka. bell */
916             /* TODO: has to be implemented */
917             break;
918         case 14:
919             /* SI (shift in), character set 0 (ignored) */
920             break;
921         case 15:
922             /* SO (shift out), character set 1 (ignored) */
923             break;
924         case 27:    /* esc (introducing an escape sequence) */
925             s->state = TTY_STATE_ESC;
926             break;
927         default:
928             console_put_one(s, ch);
929             break;
930         }
931         break;
932     case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
933         if (ch == '[') {
934             for(i=0;i<MAX_ESC_PARAMS;i++)
935                 s->esc_params[i] = 0;
936             s->nb_esc_params = 0;
937             s->state = TTY_STATE_CSI;
938         } else {
939             s->state = TTY_STATE_NORM;
940         }
941         break;
942     case TTY_STATE_CSI: /* handle escape sequence parameters */
943         if (ch >= '0' && ch <= '9') {
944             if (s->nb_esc_params < MAX_ESC_PARAMS) {
945                 int *param = &s->esc_params[s->nb_esc_params];
946                 int digit = (ch - '0');
947 
948                 *param = (*param <= (INT_MAX - digit) / 10) ?
949                          *param * 10 + digit : INT_MAX;
950             }
951         } else {
952             if (s->nb_esc_params < MAX_ESC_PARAMS)
953                 s->nb_esc_params++;
954             if (ch == ';' || ch == '?') {
955                 break;
956             }
957             trace_console_putchar_csi(s->esc_params[0], s->esc_params[1],
958                                       ch, s->nb_esc_params);
959             s->state = TTY_STATE_NORM;
960             switch(ch) {
961             case 'A':
962                 /* move cursor up */
963                 if (s->esc_params[0] == 0) {
964                     s->esc_params[0] = 1;
965                 }
966                 set_cursor(s, s->x, s->y - s->esc_params[0]);
967                 break;
968             case 'B':
969                 /* move cursor down */
970                 if (s->esc_params[0] == 0) {
971                     s->esc_params[0] = 1;
972                 }
973                 set_cursor(s, s->x, s->y + s->esc_params[0]);
974                 break;
975             case 'C':
976                 /* move cursor right */
977                 if (s->esc_params[0] == 0) {
978                     s->esc_params[0] = 1;
979                 }
980                 set_cursor(s, s->x + s->esc_params[0], s->y);
981                 break;
982             case 'D':
983                 /* move cursor left */
984                 if (s->esc_params[0] == 0) {
985                     s->esc_params[0] = 1;
986                 }
987                 set_cursor(s, s->x - s->esc_params[0], s->y);
988                 break;
989             case 'G':
990                 /* move cursor to column */
991                 set_cursor(s, s->esc_params[0] - 1, s->y);
992                 break;
993             case 'f':
994             case 'H':
995                 /* move cursor to row, column */
996                 set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
997                 break;
998             case 'J':
999                 switch (s->esc_params[0]) {
1000                 case 0:
1001                     /* clear to end of screen */
1002                     for (y = s->y; y < s->height; y++) {
1003                         for (x = 0; x < s->width; x++) {
1004                             if (y == s->y && x < s->x) {
1005                                 continue;
1006                             }
1007                             console_clear_xy(s, x, y);
1008                         }
1009                     }
1010                     break;
1011                 case 1:
1012                     /* clear from beginning of screen */
1013                     for (y = 0; y <= s->y; y++) {
1014                         for (x = 0; x < s->width; x++) {
1015                             if (y == s->y && x > s->x) {
1016                                 break;
1017                             }
1018                             console_clear_xy(s, x, y);
1019                         }
1020                     }
1021                     break;
1022                 case 2:
1023                     /* clear entire screen */
1024                     for (y = 0; y <= s->height; y++) {
1025                         for (x = 0; x < s->width; x++) {
1026                             console_clear_xy(s, x, y);
1027                         }
1028                     }
1029                     break;
1030                 }
1031                 break;
1032             case 'K':
1033                 switch (s->esc_params[0]) {
1034                 case 0:
1035                     /* clear to eol */
1036                     for(x = s->x; x < s->width; x++) {
1037                         console_clear_xy(s, x, s->y);
1038                     }
1039                     break;
1040                 case 1:
1041                     /* clear from beginning of line */
1042                     for (x = 0; x <= s->x && x < s->width; x++) {
1043                         console_clear_xy(s, x, s->y);
1044                     }
1045                     break;
1046                 case 2:
1047                     /* clear entire line */
1048                     for(x = 0; x < s->width; x++) {
1049                         console_clear_xy(s, x, s->y);
1050                     }
1051                     break;
1052                 }
1053                 break;
1054             case 'm':
1055                 console_handle_escape(s);
1056                 break;
1057             case 'n':
1058                 switch (s->esc_params[0]) {
1059                 case 5:
1060                     /* report console status (always succeed)*/
1061                     console_respond_str(s, "\033[0n");
1062                     break;
1063                 case 6:
1064                     /* report cursor position */
1065                     sprintf(response, "\033[%d;%dR",
1066                            (s->y_base + s->y) % s->total_height + 1,
1067                             s->x + 1);
1068                     console_respond_str(s, response);
1069                     break;
1070                 }
1071                 break;
1072             case 's':
1073                 /* save cursor position */
1074                 s->x_saved = s->x;
1075                 s->y_saved = s->y;
1076                 break;
1077             case 'u':
1078                 /* restore cursor position */
1079                 s->x = s->x_saved;
1080                 s->y = s->y_saved;
1081                 break;
1082             default:
1083                 trace_console_putchar_unhandled(ch);
1084                 break;
1085             }
1086             break;
1087         }
1088     }
1089 }
1090 
1091 void console_select(unsigned int index)
1092 {
1093     DisplayChangeListener *dcl;
1094     QemuConsole *s;
1095 
1096     trace_console_select(index);
1097     s = qemu_console_lookup_by_index(index);
1098     if (s) {
1099         DisplayState *ds = s->ds;
1100 
1101         active_console = s;
1102         if (ds->have_gfx) {
1103             QLIST_FOREACH(dcl, &ds->listeners, next) {
1104                 if (dcl->con != NULL) {
1105                     continue;
1106                 }
1107                 if (dcl->ops->dpy_gfx_switch) {
1108                     dcl->ops->dpy_gfx_switch(dcl, s->surface);
1109                 }
1110             }
1111             if (s->surface) {
1112                 dpy_gfx_update(s, 0, 0, surface_width(s->surface),
1113                                surface_height(s->surface));
1114             }
1115         }
1116         if (ds->have_text) {
1117             dpy_text_resize(s, s->width, s->height);
1118         }
1119         text_console_update_cursor(NULL);
1120     }
1121 }
1122 
1123 struct VCChardev {
1124     Chardev parent;
1125     QemuConsole *console;
1126 };
1127 typedef struct VCChardev VCChardev;
1128 
1129 #define TYPE_CHARDEV_VC "chardev-vc"
1130 DECLARE_INSTANCE_CHECKER(VCChardev, VC_CHARDEV,
1131                          TYPE_CHARDEV_VC)
1132 
1133 static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
1134 {
1135     VCChardev *drv = VC_CHARDEV(chr);
1136     QemuConsole *s = drv->console;
1137     int i;
1138 
1139     if (!s->ds) {
1140         return 0;
1141     }
1142 
1143     s->update_x0 = s->width * FONT_WIDTH;
1144     s->update_y0 = s->height * FONT_HEIGHT;
1145     s->update_x1 = 0;
1146     s->update_y1 = 0;
1147     console_show_cursor(s, 0);
1148     for(i = 0; i < len; i++) {
1149         console_putchar(s, buf[i]);
1150     }
1151     console_show_cursor(s, 1);
1152     if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
1153         dpy_gfx_update(s, s->update_x0, s->update_y0,
1154                        s->update_x1 - s->update_x0,
1155                        s->update_y1 - s->update_y0);
1156     }
1157     return len;
1158 }
1159 
1160 static void kbd_send_chars(void *opaque)
1161 {
1162     QemuConsole *s = opaque;
1163     int len;
1164     uint8_t buf[16];
1165 
1166     len = qemu_chr_be_can_write(s->chr);
1167     if (len > s->out_fifo.count)
1168         len = s->out_fifo.count;
1169     if (len > 0) {
1170         if (len > sizeof(buf))
1171             len = sizeof(buf);
1172         qemu_fifo_read(&s->out_fifo, buf, len);
1173         qemu_chr_be_write(s->chr, buf, len);
1174     }
1175     /* characters are pending: we send them a bit later (XXX:
1176        horrible, should change char device API) */
1177     if (s->out_fifo.count > 0) {
1178         timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
1179     }
1180 }
1181 
1182 /* called when an ascii key is pressed */
1183 void kbd_put_keysym_console(QemuConsole *s, int keysym)
1184 {
1185     uint8_t buf[16], *q;
1186     CharBackend *be;
1187     int c;
1188 
1189     if (!s || (s->console_type == GRAPHIC_CONSOLE))
1190         return;
1191 
1192     switch(keysym) {
1193     case QEMU_KEY_CTRL_UP:
1194         console_scroll(s, -1);
1195         break;
1196     case QEMU_KEY_CTRL_DOWN:
1197         console_scroll(s, 1);
1198         break;
1199     case QEMU_KEY_CTRL_PAGEUP:
1200         console_scroll(s, -10);
1201         break;
1202     case QEMU_KEY_CTRL_PAGEDOWN:
1203         console_scroll(s, 10);
1204         break;
1205     default:
1206         /* convert the QEMU keysym to VT100 key string */
1207         q = buf;
1208         if (keysym >= 0xe100 && keysym <= 0xe11f) {
1209             *q++ = '\033';
1210             *q++ = '[';
1211             c = keysym - 0xe100;
1212             if (c >= 10)
1213                 *q++ = '0' + (c / 10);
1214             *q++ = '0' + (c % 10);
1215             *q++ = '~';
1216         } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
1217             *q++ = '\033';
1218             *q++ = '[';
1219             *q++ = keysym & 0xff;
1220         } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
1221             vc_chr_write(s->chr, (const uint8_t *) "\r", 1);
1222             *q++ = '\n';
1223         } else {
1224             *q++ = keysym;
1225         }
1226         if (s->echo) {
1227             vc_chr_write(s->chr, buf, q - buf);
1228         }
1229         be = s->chr->be;
1230         if (be && be->chr_read) {
1231             qemu_fifo_write(&s->out_fifo, buf, q - buf);
1232             kbd_send_chars(s);
1233         }
1234         break;
1235     }
1236 }
1237 
1238 static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
1239     [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
1240     [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
1241     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,
1242     [Q_KEY_CODE_LEFT]   = QEMU_KEY_LEFT,
1243     [Q_KEY_CODE_HOME]   = QEMU_KEY_HOME,
1244     [Q_KEY_CODE_END]    = QEMU_KEY_END,
1245     [Q_KEY_CODE_PGUP]   = QEMU_KEY_PAGEUP,
1246     [Q_KEY_CODE_PGDN]   = QEMU_KEY_PAGEDOWN,
1247     [Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
1248     [Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
1249 };
1250 
1251 static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
1252     [Q_KEY_CODE_UP]     = QEMU_KEY_CTRL_UP,
1253     [Q_KEY_CODE_DOWN]   = QEMU_KEY_CTRL_DOWN,
1254     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_CTRL_RIGHT,
1255     [Q_KEY_CODE_LEFT]   = QEMU_KEY_CTRL_LEFT,
1256     [Q_KEY_CODE_HOME]   = QEMU_KEY_CTRL_HOME,
1257     [Q_KEY_CODE_END]    = QEMU_KEY_CTRL_END,
1258     [Q_KEY_CODE_PGUP]   = QEMU_KEY_CTRL_PAGEUP,
1259     [Q_KEY_CODE_PGDN]   = QEMU_KEY_CTRL_PAGEDOWN,
1260 };
1261 
1262 bool kbd_put_qcode_console(QemuConsole *s, int qcode, bool ctrl)
1263 {
1264     int keysym;
1265 
1266     keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
1267     if (keysym == 0) {
1268         return false;
1269     }
1270     kbd_put_keysym_console(s, keysym);
1271     return true;
1272 }
1273 
1274 void kbd_put_string_console(QemuConsole *s, const char *str, int len)
1275 {
1276     int i;
1277 
1278     for (i = 0; i < len && str[i]; i++) {
1279         kbd_put_keysym_console(s, str[i]);
1280     }
1281 }
1282 
1283 void kbd_put_keysym(int keysym)
1284 {
1285     kbd_put_keysym_console(active_console, keysym);
1286 }
1287 
1288 static void text_console_invalidate(void *opaque)
1289 {
1290     QemuConsole *s = (QemuConsole *) opaque;
1291 
1292     if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
1293         text_console_resize(s);
1294     }
1295     console_refresh(s);
1296 }
1297 
1298 static void text_console_update(void *opaque, console_ch_t *chardata)
1299 {
1300     QemuConsole *s = (QemuConsole *) opaque;
1301     int i, j, src;
1302 
1303     if (s->text_x[0] <= s->text_x[1]) {
1304         src = (s->y_base + s->text_y[0]) * s->width;
1305         chardata += s->text_y[0] * s->width;
1306         for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
1307             for (j = 0; j < s->width; j++, src++) {
1308                 console_write_ch(chardata ++,
1309                                  ATTR2CHTYPE(s->cells[src].ch,
1310                                              s->cells[src].t_attrib.fgcol,
1311                                              s->cells[src].t_attrib.bgcol,
1312                                              s->cells[src].t_attrib.bold));
1313             }
1314         dpy_text_update(s, s->text_x[0], s->text_y[0],
1315                         s->text_x[1] - s->text_x[0], i - s->text_y[0]);
1316         s->text_x[0] = s->width;
1317         s->text_y[0] = s->height;
1318         s->text_x[1] = 0;
1319         s->text_y[1] = 0;
1320     }
1321     if (s->cursor_invalidate) {
1322         dpy_text_cursor(s, s->x, s->y);
1323         s->cursor_invalidate = 0;
1324     }
1325 }
1326 
1327 static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
1328                                 uint32_t head)
1329 {
1330     Object *obj;
1331     QemuConsole *s;
1332     int i;
1333 
1334     obj = object_new(TYPE_QEMU_CONSOLE);
1335     s = QEMU_CONSOLE(obj);
1336     qemu_co_queue_init(&s->dump_queue);
1337     s->head = head;
1338     object_property_add_link(obj, "device", TYPE_DEVICE,
1339                              (Object **)&s->device,
1340                              object_property_allow_set_link,
1341                              OBJ_PROP_LINK_STRONG);
1342     object_property_add_uint32_ptr(obj, "head", &s->head,
1343                                    OBJ_PROP_FLAG_READ);
1344 
1345     if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
1346         (console_type == GRAPHIC_CONSOLE))) {
1347         active_console = s;
1348     }
1349     s->ds = ds;
1350     s->console_type = console_type;
1351     s->window_id = -1;
1352 
1353     if (QTAILQ_EMPTY(&consoles)) {
1354         s->index = 0;
1355         QTAILQ_INSERT_TAIL(&consoles, s, next);
1356     } else if (console_type != GRAPHIC_CONSOLE || phase_check(PHASE_MACHINE_READY)) {
1357         QemuConsole *last = QTAILQ_LAST(&consoles);
1358         s->index = last->index + 1;
1359         QTAILQ_INSERT_TAIL(&consoles, s, next);
1360     } else {
1361         /*
1362          * HACK: Put graphical consoles before text consoles.
1363          *
1364          * Only do that for coldplugged devices.  After initial device
1365          * initialization we will not renumber the consoles any more.
1366          */
1367         QemuConsole *c = QTAILQ_FIRST(&consoles);
1368 
1369         while (QTAILQ_NEXT(c, next) != NULL &&
1370                c->console_type == GRAPHIC_CONSOLE) {
1371             c = QTAILQ_NEXT(c, next);
1372         }
1373         if (c->console_type == GRAPHIC_CONSOLE) {
1374             /* have no text consoles */
1375             s->index = c->index + 1;
1376             QTAILQ_INSERT_AFTER(&consoles, c, s, next);
1377         } else {
1378             s->index = c->index;
1379             QTAILQ_INSERT_BEFORE(c, s, next);
1380             /* renumber text consoles */
1381             for (i = s->index + 1; c != NULL; c = QTAILQ_NEXT(c, next), i++) {
1382                 c->index = i;
1383             }
1384         }
1385     }
1386     return s;
1387 }
1388 
1389 static void qemu_alloc_display(DisplaySurface *surface, int width, int height)
1390 {
1391     qemu_pixman_image_unref(surface->image);
1392     surface->image = NULL;
1393 
1394     surface->format = PIXMAN_x8r8g8b8;
1395     surface->image = pixman_image_create_bits(surface->format,
1396                                               width, height,
1397                                               NULL, width * 4);
1398     assert(surface->image != NULL);
1399 
1400     surface->flags = QEMU_ALLOCATED_FLAG;
1401 }
1402 
1403 DisplaySurface *qemu_create_displaysurface(int width, int height)
1404 {
1405     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1406 
1407     trace_displaysurface_create(surface, width, height);
1408     qemu_alloc_display(surface, width, height);
1409     return surface;
1410 }
1411 
1412 DisplaySurface *qemu_create_displaysurface_from(int width, int height,
1413                                                 pixman_format_code_t format,
1414                                                 int linesize, uint8_t *data)
1415 {
1416     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1417 
1418     trace_displaysurface_create_from(surface, width, height, format);
1419     surface->format = format;
1420     surface->image = pixman_image_create_bits(surface->format,
1421                                               width, height,
1422                                               (void *)data, linesize);
1423     assert(surface->image != NULL);
1424 
1425     return surface;
1426 }
1427 
1428 DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
1429 {
1430     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1431 
1432     trace_displaysurface_create_pixman(surface);
1433     surface->format = pixman_image_get_format(image);
1434     surface->image = pixman_image_ref(image);
1435 
1436     return surface;
1437 }
1438 
1439 DisplaySurface *qemu_create_message_surface(int w, int h,
1440                                             const char *msg)
1441 {
1442     DisplaySurface *surface = qemu_create_displaysurface(w, h);
1443     pixman_color_t bg = color_table_rgb[0][QEMU_COLOR_BLACK];
1444     pixman_color_t fg = color_table_rgb[0][QEMU_COLOR_WHITE];
1445     pixman_image_t *glyph;
1446     int len, x, y, i;
1447 
1448     len = strlen(msg);
1449     x = (w / FONT_WIDTH  - len) / 2;
1450     y = (h / FONT_HEIGHT - 1)   / 2;
1451     for (i = 0; i < len; i++) {
1452         glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
1453         qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
1454                                  x+i, y, FONT_WIDTH, FONT_HEIGHT);
1455         qemu_pixman_image_unref(glyph);
1456     }
1457     return surface;
1458 }
1459 
1460 void qemu_free_displaysurface(DisplaySurface *surface)
1461 {
1462     if (surface == NULL) {
1463         return;
1464     }
1465     trace_displaysurface_free(surface);
1466     qemu_pixman_image_unref(surface->image);
1467     g_free(surface);
1468 }
1469 
1470 bool console_has_gl(QemuConsole *con)
1471 {
1472     return con->gl != NULL;
1473 }
1474 
1475 static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl)
1476 {
1477     if (dcl->ops->dpy_has_dmabuf) {
1478         return dcl->ops->dpy_has_dmabuf(dcl);
1479     }
1480 
1481     if (dcl->ops->dpy_gl_scanout_dmabuf) {
1482         return true;
1483     }
1484 
1485     return false;
1486 }
1487 
1488 static bool dpy_compatible_with(QemuConsole *con,
1489                                 DisplayChangeListener *dcl, Error **errp)
1490 {
1491     ERRP_GUARD();
1492     int flags;
1493 
1494     flags = con->hw_ops->get_flags ? con->hw_ops->get_flags(con->hw) : 0;
1495 
1496     if (flags & GRAPHIC_FLAGS_GL &&
1497         !console_has_gl(con)) {
1498         error_setg(errp, "The console requires a GL context.");
1499         return false;
1500 
1501     }
1502 
1503     if (flags & GRAPHIC_FLAGS_DMABUF &&
1504         !displaychangelistener_has_dmabuf(dcl)) {
1505         error_setg(errp, "The console requires display DMABUF support.");
1506         return false;
1507     }
1508 
1509     return true;
1510 }
1511 
1512 void register_displaychangelistener(DisplayChangeListener *dcl)
1513 {
1514     static const char nodev[] =
1515         "This VM has no graphic display device.";
1516     static DisplaySurface *dummy;
1517     QemuConsole *con;
1518     Error *err = NULL;
1519 
1520     assert(!dcl->ds);
1521 
1522     if (dcl->ops->dpy_gl_ctx_create) {
1523         /* display has opengl support */
1524         assert(dcl->con);
1525         if (dcl->con->gl) {
1526             fprintf(stderr, "can't register two opengl displays (%s, %s)\n",
1527                     dcl->ops->dpy_name, dcl->con->gl->ops->dpy_name);
1528             exit(1);
1529         }
1530         dcl->con->gl = dcl;
1531     }
1532 
1533     if (dcl->con && !dpy_compatible_with(dcl->con, dcl, &err)) {
1534         error_report_err(err);
1535         exit(1);
1536     }
1537 
1538     trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
1539     dcl->ds = get_alloc_displaystate();
1540     QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
1541     gui_setup_refresh(dcl->ds);
1542     if (dcl->con) {
1543         dcl->con->dcls++;
1544         con = dcl->con;
1545     } else {
1546         con = active_console;
1547     }
1548     if (dcl->ops->dpy_gfx_switch) {
1549         if (con) {
1550             dcl->ops->dpy_gfx_switch(dcl, con->surface);
1551         } else {
1552             if (!dummy) {
1553                 dummy = qemu_create_message_surface(640, 480, nodev);
1554             }
1555             dcl->ops->dpy_gfx_switch(dcl, dummy);
1556         }
1557     }
1558     text_console_update_cursor(NULL);
1559 }
1560 
1561 void update_displaychangelistener(DisplayChangeListener *dcl,
1562                                   uint64_t interval)
1563 {
1564     DisplayState *ds = dcl->ds;
1565 
1566     dcl->update_interval = interval;
1567     if (!ds->refreshing && ds->update_interval > interval) {
1568         timer_mod(ds->gui_timer, ds->last_update + interval);
1569     }
1570 }
1571 
1572 void unregister_displaychangelistener(DisplayChangeListener *dcl)
1573 {
1574     DisplayState *ds = dcl->ds;
1575     trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
1576     if (dcl->con) {
1577         dcl->con->dcls--;
1578     }
1579     QLIST_REMOVE(dcl, next);
1580     dcl->ds = NULL;
1581     gui_setup_refresh(ds);
1582 }
1583 
1584 static void dpy_set_ui_info_timer(void *opaque)
1585 {
1586     QemuConsole *con = opaque;
1587 
1588     con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
1589 }
1590 
1591 bool dpy_ui_info_supported(QemuConsole *con)
1592 {
1593     if (con == NULL) {
1594         con = active_console;
1595     }
1596 
1597     return con->hw_ops->ui_info != NULL;
1598 }
1599 
1600 const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
1601 {
1602     if (con == NULL) {
1603         con = active_console;
1604     }
1605 
1606     return &con->ui_info;
1607 }
1608 
1609 int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
1610 {
1611     if (con == NULL) {
1612         con = active_console;
1613     }
1614 
1615     if (!dpy_ui_info_supported(con)) {
1616         return -1;
1617     }
1618     if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
1619         /* nothing changed -- ignore */
1620         return 0;
1621     }
1622 
1623     /*
1624      * Typically we get a flood of these as the user resizes the window.
1625      * Wait until the dust has settled (one second without updates), then
1626      * go notify the guest.
1627      */
1628     con->ui_info = *info;
1629     timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
1630     return 0;
1631 }
1632 
1633 void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
1634 {
1635     DisplayState *s = con->ds;
1636     DisplayChangeListener *dcl;
1637     int width = w;
1638     int height = h;
1639 
1640     if (con->surface) {
1641         width = surface_width(con->surface);
1642         height = surface_height(con->surface);
1643     }
1644     x = MAX(x, 0);
1645     y = MAX(y, 0);
1646     x = MIN(x, width);
1647     y = MIN(y, height);
1648     w = MIN(w, width - x);
1649     h = MIN(h, height - y);
1650 
1651     if (!qemu_console_is_visible(con)) {
1652         return;
1653     }
1654     QLIST_FOREACH(dcl, &s->listeners, next) {
1655         if (con != (dcl->con ? dcl->con : active_console)) {
1656             continue;
1657         }
1658         if (dcl->ops->dpy_gfx_update) {
1659             dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
1660         }
1661     }
1662 }
1663 
1664 void dpy_gfx_update_full(QemuConsole *con)
1665 {
1666     if (!con->surface) {
1667         return;
1668     }
1669     dpy_gfx_update(con, 0, 0,
1670                    surface_width(con->surface),
1671                    surface_height(con->surface));
1672 }
1673 
1674 void dpy_gfx_replace_surface(QemuConsole *con,
1675                              DisplaySurface *surface)
1676 {
1677     DisplayState *s = con->ds;
1678     DisplaySurface *old_surface = con->surface;
1679     DisplayChangeListener *dcl;
1680 
1681     assert(old_surface != surface || surface == NULL);
1682 
1683     con->surface = surface;
1684     QLIST_FOREACH(dcl, &s->listeners, next) {
1685         if (con != (dcl->con ? dcl->con : active_console)) {
1686             continue;
1687         }
1688         if (dcl->ops->dpy_gfx_switch) {
1689             dcl->ops->dpy_gfx_switch(dcl, surface);
1690         }
1691     }
1692     qemu_free_displaysurface(old_surface);
1693 }
1694 
1695 bool dpy_gfx_check_format(QemuConsole *con,
1696                           pixman_format_code_t format)
1697 {
1698     DisplayChangeListener *dcl;
1699     DisplayState *s = con->ds;
1700 
1701     QLIST_FOREACH(dcl, &s->listeners, next) {
1702         if (dcl->con && dcl->con != con) {
1703             /* dcl bound to another console -> skip */
1704             continue;
1705         }
1706         if (dcl->ops->dpy_gfx_check_format) {
1707             if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
1708                 return false;
1709             }
1710         } else {
1711             /* default is to whitelist native 32 bpp only */
1712             if (format != qemu_default_pixman_format(32, true)) {
1713                 return false;
1714             }
1715         }
1716     }
1717     return true;
1718 }
1719 
1720 static void dpy_refresh(DisplayState *s)
1721 {
1722     DisplayChangeListener *dcl;
1723 
1724     QLIST_FOREACH(dcl, &s->listeners, next) {
1725         if (dcl->ops->dpy_refresh) {
1726             dcl->ops->dpy_refresh(dcl);
1727         }
1728     }
1729 }
1730 
1731 void dpy_text_cursor(QemuConsole *con, int x, int y)
1732 {
1733     DisplayState *s = con->ds;
1734     DisplayChangeListener *dcl;
1735 
1736     if (!qemu_console_is_visible(con)) {
1737         return;
1738     }
1739     QLIST_FOREACH(dcl, &s->listeners, next) {
1740         if (con != (dcl->con ? dcl->con : active_console)) {
1741             continue;
1742         }
1743         if (dcl->ops->dpy_text_cursor) {
1744             dcl->ops->dpy_text_cursor(dcl, x, y);
1745         }
1746     }
1747 }
1748 
1749 void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
1750 {
1751     DisplayState *s = con->ds;
1752     DisplayChangeListener *dcl;
1753 
1754     if (!qemu_console_is_visible(con)) {
1755         return;
1756     }
1757     QLIST_FOREACH(dcl, &s->listeners, next) {
1758         if (con != (dcl->con ? dcl->con : active_console)) {
1759             continue;
1760         }
1761         if (dcl->ops->dpy_text_update) {
1762             dcl->ops->dpy_text_update(dcl, x, y, w, h);
1763         }
1764     }
1765 }
1766 
1767 void dpy_text_resize(QemuConsole *con, int w, int h)
1768 {
1769     DisplayState *s = con->ds;
1770     DisplayChangeListener *dcl;
1771 
1772     if (!qemu_console_is_visible(con)) {
1773         return;
1774     }
1775     QLIST_FOREACH(dcl, &s->listeners, next) {
1776         if (con != (dcl->con ? dcl->con : active_console)) {
1777             continue;
1778         }
1779         if (dcl->ops->dpy_text_resize) {
1780             dcl->ops->dpy_text_resize(dcl, w, h);
1781         }
1782     }
1783 }
1784 
1785 void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
1786 {
1787     DisplayState *s = con->ds;
1788     DisplayChangeListener *dcl;
1789 
1790     if (!qemu_console_is_visible(con)) {
1791         return;
1792     }
1793     QLIST_FOREACH(dcl, &s->listeners, next) {
1794         if (con != (dcl->con ? dcl->con : active_console)) {
1795             continue;
1796         }
1797         if (dcl->ops->dpy_mouse_set) {
1798             dcl->ops->dpy_mouse_set(dcl, x, y, on);
1799         }
1800     }
1801 }
1802 
1803 void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
1804 {
1805     DisplayState *s = con->ds;
1806     DisplayChangeListener *dcl;
1807 
1808     if (!qemu_console_is_visible(con)) {
1809         return;
1810     }
1811     QLIST_FOREACH(dcl, &s->listeners, next) {
1812         if (con != (dcl->con ? dcl->con : active_console)) {
1813             continue;
1814         }
1815         if (dcl->ops->dpy_cursor_define) {
1816             dcl->ops->dpy_cursor_define(dcl, cursor);
1817         }
1818     }
1819 }
1820 
1821 bool dpy_cursor_define_supported(QemuConsole *con)
1822 {
1823     DisplayState *s = con->ds;
1824     DisplayChangeListener *dcl;
1825 
1826     QLIST_FOREACH(dcl, &s->listeners, next) {
1827         if (dcl->ops->dpy_cursor_define) {
1828             return true;
1829         }
1830     }
1831     return false;
1832 }
1833 
1834 QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
1835                                 struct QEMUGLParams *qparams)
1836 {
1837     assert(con->gl);
1838     return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
1839 }
1840 
1841 void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
1842 {
1843     assert(con->gl);
1844     con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
1845 }
1846 
1847 int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
1848 {
1849     assert(con->gl);
1850     return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
1851 }
1852 
1853 void dpy_gl_scanout_disable(QemuConsole *con)
1854 {
1855     assert(con->gl);
1856     con->gl->ops->dpy_gl_scanout_disable(con->gl);
1857 }
1858 
1859 void dpy_gl_scanout_texture(QemuConsole *con,
1860                             uint32_t backing_id,
1861                             bool backing_y_0_top,
1862                             uint32_t backing_width,
1863                             uint32_t backing_height,
1864                             uint32_t x, uint32_t y,
1865                             uint32_t width, uint32_t height)
1866 {
1867     assert(con->gl);
1868     con->gl->ops->dpy_gl_scanout_texture(con->gl, backing_id,
1869                                          backing_y_0_top,
1870                                          backing_width, backing_height,
1871                                          x, y, width, height);
1872 }
1873 
1874 void dpy_gl_scanout_dmabuf(QemuConsole *con,
1875                            QemuDmaBuf *dmabuf)
1876 {
1877     assert(con->gl);
1878     con->gl->ops->dpy_gl_scanout_dmabuf(con->gl, dmabuf);
1879 }
1880 
1881 void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
1882                           bool have_hot, uint32_t hot_x, uint32_t hot_y)
1883 {
1884     assert(con->gl);
1885 
1886     if (con->gl->ops->dpy_gl_cursor_dmabuf) {
1887         con->gl->ops->dpy_gl_cursor_dmabuf(con->gl, dmabuf,
1888                                            have_hot, hot_x, hot_y);
1889     }
1890 }
1891 
1892 void dpy_gl_cursor_position(QemuConsole *con,
1893                             uint32_t pos_x, uint32_t pos_y)
1894 {
1895     assert(con->gl);
1896 
1897     if (con->gl->ops->dpy_gl_cursor_position) {
1898         con->gl->ops->dpy_gl_cursor_position(con->gl, pos_x, pos_y);
1899     }
1900 }
1901 
1902 void dpy_gl_release_dmabuf(QemuConsole *con,
1903                           QemuDmaBuf *dmabuf)
1904 {
1905     assert(con->gl);
1906 
1907     if (con->gl->ops->dpy_gl_release_dmabuf) {
1908         con->gl->ops->dpy_gl_release_dmabuf(con->gl, dmabuf);
1909     }
1910 }
1911 
1912 void dpy_gl_update(QemuConsole *con,
1913                    uint32_t x, uint32_t y, uint32_t w, uint32_t h)
1914 {
1915     assert(con->gl);
1916     con->gl->ops->dpy_gl_update(con->gl, x, y, w, h);
1917 }
1918 
1919 /***********************************************************/
1920 /* register display */
1921 
1922 /* console.c internal use only */
1923 static DisplayState *get_alloc_displaystate(void)
1924 {
1925     if (!display_state) {
1926         display_state = g_new0(DisplayState, 1);
1927         cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1928                                     text_console_update_cursor, NULL);
1929     }
1930     return display_state;
1931 }
1932 
1933 /*
1934  * Called by main(), after creating QemuConsoles
1935  * and before initializing ui (sdl/vnc/...).
1936  */
1937 DisplayState *init_displaystate(void)
1938 {
1939     gchar *name;
1940     QemuConsole *con;
1941 
1942     get_alloc_displaystate();
1943     QTAILQ_FOREACH(con, &consoles, next) {
1944         if (con->console_type != GRAPHIC_CONSOLE &&
1945             con->ds == NULL) {
1946             text_console_do_init(con->chr, display_state);
1947         }
1948 
1949         /* Hook up into the qom tree here (not in new_console()), once
1950          * all QemuConsoles are created and the order / numbering
1951          * doesn't change any more */
1952         name = g_strdup_printf("console[%d]", con->index);
1953         object_property_add_child(container_get(object_get_root(), "/backend"),
1954                                   name, OBJECT(con));
1955         g_free(name);
1956     }
1957 
1958     return display_state;
1959 }
1960 
1961 void graphic_console_set_hwops(QemuConsole *con,
1962                                const GraphicHwOps *hw_ops,
1963                                void *opaque)
1964 {
1965     con->hw_ops = hw_ops;
1966     con->hw = opaque;
1967 }
1968 
1969 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
1970                                   const GraphicHwOps *hw_ops,
1971                                   void *opaque)
1972 {
1973     static const char noinit[] =
1974         "Guest has not initialized the display (yet).";
1975     int width = 640;
1976     int height = 480;
1977     QemuConsole *s;
1978     DisplayState *ds;
1979     DisplaySurface *surface;
1980 
1981     ds = get_alloc_displaystate();
1982     s = qemu_console_lookup_unused();
1983     if (s) {
1984         trace_console_gfx_reuse(s->index);
1985         if (s->surface) {
1986             width = surface_width(s->surface);
1987             height = surface_height(s->surface);
1988         }
1989     } else {
1990         trace_console_gfx_new();
1991         s = new_console(ds, GRAPHIC_CONSOLE, head);
1992         s->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1993                                    dpy_set_ui_info_timer, s);
1994     }
1995     graphic_console_set_hwops(s, hw_ops, opaque);
1996     if (dev) {
1997         object_property_set_link(OBJECT(s), "device", OBJECT(dev),
1998                                  &error_abort);
1999     }
2000 
2001     surface = qemu_create_message_surface(width, height, noinit);
2002     dpy_gfx_replace_surface(s, surface);
2003     return s;
2004 }
2005 
2006 static const GraphicHwOps unused_ops = {
2007     /* no callbacks */
2008 };
2009 
2010 void graphic_console_close(QemuConsole *con)
2011 {
2012     static const char unplugged[] =
2013         "Guest display has been unplugged";
2014     DisplaySurface *surface;
2015     int width = 640;
2016     int height = 480;
2017 
2018     if (con->surface) {
2019         width = surface_width(con->surface);
2020         height = surface_height(con->surface);
2021     }
2022 
2023     trace_console_gfx_close(con->index);
2024     object_property_set_link(OBJECT(con), "device", NULL, &error_abort);
2025     graphic_console_set_hwops(con, &unused_ops, NULL);
2026 
2027     if (con->gl) {
2028         dpy_gl_scanout_disable(con);
2029     }
2030     surface = qemu_create_message_surface(width, height, unplugged);
2031     dpy_gfx_replace_surface(con, surface);
2032 }
2033 
2034 QemuConsole *qemu_console_lookup_by_index(unsigned int index)
2035 {
2036     QemuConsole *con;
2037 
2038     QTAILQ_FOREACH(con, &consoles, next) {
2039         if (con->index == index) {
2040             return con;
2041         }
2042     }
2043     return NULL;
2044 }
2045 
2046 QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
2047 {
2048     QemuConsole *con;
2049     Object *obj;
2050     uint32_t h;
2051 
2052     QTAILQ_FOREACH(con, &consoles, next) {
2053         obj = object_property_get_link(OBJECT(con),
2054                                        "device", &error_abort);
2055         if (DEVICE(obj) != dev) {
2056             continue;
2057         }
2058         h = object_property_get_uint(OBJECT(con),
2059                                      "head", &error_abort);
2060         if (h != head) {
2061             continue;
2062         }
2063         return con;
2064     }
2065     return NULL;
2066 }
2067 
2068 QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
2069                                                 uint32_t head, Error **errp)
2070 {
2071     DeviceState *dev;
2072     QemuConsole *con;
2073 
2074     dev = qdev_find_recursive(sysbus_get_default(), device_id);
2075     if (dev == NULL) {
2076         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
2077                   "Device '%s' not found", device_id);
2078         return NULL;
2079     }
2080 
2081     con = qemu_console_lookup_by_device(dev, head);
2082     if (con == NULL) {
2083         error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
2084                    device_id, head);
2085         return NULL;
2086     }
2087 
2088     return con;
2089 }
2090 
2091 QemuConsole *qemu_console_lookup_unused(void)
2092 {
2093     QemuConsole *con;
2094     Object *obj;
2095 
2096     QTAILQ_FOREACH(con, &consoles, next) {
2097         if (con->hw_ops != &unused_ops) {
2098             continue;
2099         }
2100         obj = object_property_get_link(OBJECT(con),
2101                                        "device", &error_abort);
2102         if (obj != NULL) {
2103             continue;
2104         }
2105         return con;
2106     }
2107     return NULL;
2108 }
2109 
2110 bool qemu_console_is_visible(QemuConsole *con)
2111 {
2112     return (con == active_console) || (con->dcls > 0);
2113 }
2114 
2115 bool qemu_console_is_graphic(QemuConsole *con)
2116 {
2117     if (con == NULL) {
2118         con = active_console;
2119     }
2120     return con && (con->console_type == GRAPHIC_CONSOLE);
2121 }
2122 
2123 bool qemu_console_is_fixedsize(QemuConsole *con)
2124 {
2125     if (con == NULL) {
2126         con = active_console;
2127     }
2128     return con && (con->console_type != TEXT_CONSOLE);
2129 }
2130 
2131 bool qemu_console_is_gl_blocked(QemuConsole *con)
2132 {
2133     assert(con != NULL);
2134     return con->gl_block;
2135 }
2136 
2137 char *qemu_console_get_label(QemuConsole *con)
2138 {
2139     if (con->console_type == GRAPHIC_CONSOLE) {
2140         if (con->device) {
2141             return g_strdup(object_get_typename(con->device));
2142         }
2143         return g_strdup("VGA");
2144     } else {
2145         if (con->chr && con->chr->label) {
2146             return g_strdup(con->chr->label);
2147         }
2148         return g_strdup_printf("vc%d", con->index);
2149     }
2150 }
2151 
2152 int qemu_console_get_index(QemuConsole *con)
2153 {
2154     if (con == NULL) {
2155         con = active_console;
2156     }
2157     return con ? con->index : -1;
2158 }
2159 
2160 uint32_t qemu_console_get_head(QemuConsole *con)
2161 {
2162     if (con == NULL) {
2163         con = active_console;
2164     }
2165     return con ? con->head : -1;
2166 }
2167 
2168 int qemu_console_get_width(QemuConsole *con, int fallback)
2169 {
2170     if (con == NULL) {
2171         con = active_console;
2172     }
2173     return con ? surface_width(con->surface) : fallback;
2174 }
2175 
2176 int qemu_console_get_height(QemuConsole *con, int fallback)
2177 {
2178     if (con == NULL) {
2179         con = active_console;
2180     }
2181     return con ? surface_height(con->surface) : fallback;
2182 }
2183 
2184 static void vc_chr_set_echo(Chardev *chr, bool echo)
2185 {
2186     VCChardev *drv = VC_CHARDEV(chr);
2187     QemuConsole *s = drv->console;
2188 
2189     s->echo = echo;
2190 }
2191 
2192 static void text_console_update_cursor_timer(void)
2193 {
2194     timer_mod(cursor_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
2195               + CONSOLE_CURSOR_PERIOD / 2);
2196 }
2197 
2198 static void text_console_update_cursor(void *opaque)
2199 {
2200     QemuConsole *s;
2201     int count = 0;
2202 
2203     cursor_visible_phase = !cursor_visible_phase;
2204 
2205     QTAILQ_FOREACH(s, &consoles, next) {
2206         if (qemu_console_is_graphic(s) ||
2207             !qemu_console_is_visible(s)) {
2208             continue;
2209         }
2210         count++;
2211         graphic_hw_invalidate(s);
2212     }
2213 
2214     if (count) {
2215         text_console_update_cursor_timer();
2216     }
2217 }
2218 
2219 static const GraphicHwOps text_console_ops = {
2220     .invalidate  = text_console_invalidate,
2221     .text_update = text_console_update,
2222 };
2223 
2224 static void text_console_do_init(Chardev *chr, DisplayState *ds)
2225 {
2226     VCChardev *drv = VC_CHARDEV(chr);
2227     QemuConsole *s = drv->console;
2228     int g_width = 80 * FONT_WIDTH;
2229     int g_height = 24 * FONT_HEIGHT;
2230 
2231     s->out_fifo.buf = s->out_fifo_buf;
2232     s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
2233     s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
2234     s->ds = ds;
2235 
2236     s->y_displayed = 0;
2237     s->y_base = 0;
2238     s->total_height = DEFAULT_BACKSCROLL;
2239     s->x = 0;
2240     s->y = 0;
2241     if (!s->surface) {
2242         if (active_console && active_console->surface) {
2243             g_width = surface_width(active_console->surface);
2244             g_height = surface_height(active_console->surface);
2245         }
2246         s->surface = qemu_create_displaysurface(g_width, g_height);
2247     }
2248 
2249     s->hw_ops = &text_console_ops;
2250     s->hw = s;
2251 
2252     /* Set text attribute defaults */
2253     s->t_attrib_default.bold = 0;
2254     s->t_attrib_default.uline = 0;
2255     s->t_attrib_default.blink = 0;
2256     s->t_attrib_default.invers = 0;
2257     s->t_attrib_default.unvisible = 0;
2258     s->t_attrib_default.fgcol = QEMU_COLOR_WHITE;
2259     s->t_attrib_default.bgcol = QEMU_COLOR_BLACK;
2260     /* set current text attributes to default */
2261     s->t_attrib = s->t_attrib_default;
2262     text_console_resize(s);
2263 
2264     if (chr->label) {
2265         char *msg;
2266 
2267         s->t_attrib.bgcol = QEMU_COLOR_BLUE;
2268         msg = g_strdup_printf("%s console\r\n", chr->label);
2269         vc_chr_write(chr, (uint8_t *)msg, strlen(msg));
2270         g_free(msg);
2271         s->t_attrib = s->t_attrib_default;
2272     }
2273 
2274     qemu_chr_be_event(chr, CHR_EVENT_OPENED);
2275 }
2276 
2277 static void vc_chr_open(Chardev *chr,
2278                         ChardevBackend *backend,
2279                         bool *be_opened,
2280                         Error **errp)
2281 {
2282     ChardevVC *vc = backend->u.vc.data;
2283     VCChardev *drv = VC_CHARDEV(chr);
2284     QemuConsole *s;
2285     unsigned width = 0;
2286     unsigned height = 0;
2287 
2288     if (vc->has_width) {
2289         width = vc->width;
2290     } else if (vc->has_cols) {
2291         width = vc->cols * FONT_WIDTH;
2292     }
2293 
2294     if (vc->has_height) {
2295         height = vc->height;
2296     } else if (vc->has_rows) {
2297         height = vc->rows * FONT_HEIGHT;
2298     }
2299 
2300     trace_console_txt_new(width, height);
2301     if (width == 0 || height == 0) {
2302         s = new_console(NULL, TEXT_CONSOLE, 0);
2303     } else {
2304         s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE, 0);
2305         s->surface = qemu_create_displaysurface(width, height);
2306     }
2307 
2308     if (!s) {
2309         error_setg(errp, "cannot create text console");
2310         return;
2311     }
2312 
2313     s->chr = chr;
2314     drv->console = s;
2315 
2316     if (display_state) {
2317         text_console_do_init(chr, display_state);
2318     }
2319 
2320     /* console/chardev init sometimes completes elsewhere in a 2nd
2321      * stage, so defer OPENED events until they are fully initialized
2322      */
2323     *be_opened = false;
2324 }
2325 
2326 void qemu_console_resize(QemuConsole *s, int width, int height)
2327 {
2328     DisplaySurface *surface;
2329 
2330     assert(s->console_type == GRAPHIC_CONSOLE);
2331 
2332     if (s->surface && (s->surface->flags & QEMU_ALLOCATED_FLAG) &&
2333         pixman_image_get_width(s->surface->image) == width &&
2334         pixman_image_get_height(s->surface->image) == height) {
2335         return;
2336     }
2337 
2338     surface = qemu_create_displaysurface(width, height);
2339     dpy_gfx_replace_surface(s, surface);
2340 }
2341 
2342 DisplaySurface *qemu_console_surface(QemuConsole *console)
2343 {
2344     return console->surface;
2345 }
2346 
2347 PixelFormat qemu_default_pixelformat(int bpp)
2348 {
2349     pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
2350     PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
2351     return pf;
2352 }
2353 
2354 static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
2355 
2356 void qemu_display_register(QemuDisplay *ui)
2357 {
2358     assert(ui->type < DISPLAY_TYPE__MAX);
2359     dpys[ui->type] = ui;
2360 }
2361 
2362 bool qemu_display_find_default(DisplayOptions *opts)
2363 {
2364     static DisplayType prio[] = {
2365         DISPLAY_TYPE_GTK,
2366         DISPLAY_TYPE_SDL,
2367         DISPLAY_TYPE_COCOA
2368     };
2369     int i;
2370 
2371     for (i = 0; i < ARRAY_SIZE(prio); i++) {
2372         if (dpys[prio[i]] == NULL) {
2373             ui_module_load_one(DisplayType_str(prio[i]));
2374         }
2375         if (dpys[prio[i]] == NULL) {
2376             continue;
2377         }
2378         opts->type = prio[i];
2379         return true;
2380     }
2381     return false;
2382 }
2383 
2384 void qemu_display_early_init(DisplayOptions *opts)
2385 {
2386     assert(opts->type < DISPLAY_TYPE__MAX);
2387     if (opts->type == DISPLAY_TYPE_NONE) {
2388         return;
2389     }
2390     if (dpys[opts->type] == NULL) {
2391         ui_module_load_one(DisplayType_str(opts->type));
2392     }
2393     if (dpys[opts->type] == NULL) {
2394         error_report("Display '%s' is not available.",
2395                      DisplayType_str(opts->type));
2396         exit(1);
2397     }
2398     if (dpys[opts->type]->early_init) {
2399         dpys[opts->type]->early_init(opts);
2400     }
2401 }
2402 
2403 void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
2404 {
2405     assert(opts->type < DISPLAY_TYPE__MAX);
2406     if (opts->type == DISPLAY_TYPE_NONE) {
2407         return;
2408     }
2409     assert(dpys[opts->type] != NULL);
2410     dpys[opts->type]->init(ds, opts);
2411 }
2412 
2413 void qemu_display_help(void)
2414 {
2415     int idx;
2416 
2417     printf("Available display backend types:\n");
2418     printf("none\n");
2419     for (idx = DISPLAY_TYPE_NONE; idx < DISPLAY_TYPE__MAX; idx++) {
2420         if (!dpys[idx]) {
2421             ui_module_load_one(DisplayType_str(idx));
2422         }
2423         if (dpys[idx]) {
2424             printf("%s\n",  DisplayType_str(dpys[idx]->type));
2425         }
2426     }
2427 }
2428 
2429 void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
2430 {
2431     int val;
2432     ChardevVC *vc;
2433 
2434     backend->type = CHARDEV_BACKEND_KIND_VC;
2435     vc = backend->u.vc.data = g_new0(ChardevVC, 1);
2436     qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
2437 
2438     val = qemu_opt_get_number(opts, "width", 0);
2439     if (val != 0) {
2440         vc->has_width = true;
2441         vc->width = val;
2442     }
2443 
2444     val = qemu_opt_get_number(opts, "height", 0);
2445     if (val != 0) {
2446         vc->has_height = true;
2447         vc->height = val;
2448     }
2449 
2450     val = qemu_opt_get_number(opts, "cols", 0);
2451     if (val != 0) {
2452         vc->has_cols = true;
2453         vc->cols = val;
2454     }
2455 
2456     val = qemu_opt_get_number(opts, "rows", 0);
2457     if (val != 0) {
2458         vc->has_rows = true;
2459         vc->rows = val;
2460     }
2461 }
2462 
2463 static const TypeInfo qemu_console_info = {
2464     .name = TYPE_QEMU_CONSOLE,
2465     .parent = TYPE_OBJECT,
2466     .instance_size = sizeof(QemuConsole),
2467     .class_size = sizeof(QemuConsoleClass),
2468 };
2469 
2470 static void char_vc_class_init(ObjectClass *oc, void *data)
2471 {
2472     ChardevClass *cc = CHARDEV_CLASS(oc);
2473 
2474     cc->parse = qemu_chr_parse_vc;
2475     cc->open = vc_chr_open;
2476     cc->chr_write = vc_chr_write;
2477     cc->chr_set_echo = vc_chr_set_echo;
2478 }
2479 
2480 static const TypeInfo char_vc_type_info = {
2481     .name = TYPE_CHARDEV_VC,
2482     .parent = TYPE_CHARDEV,
2483     .instance_size = sizeof(VCChardev),
2484     .class_init = char_vc_class_init,
2485 };
2486 
2487 void qemu_console_early_init(void)
2488 {
2489     /* set the default vc driver */
2490     if (!object_class_by_name(TYPE_CHARDEV_VC)) {
2491         type_register(&char_vc_type_info);
2492     }
2493 }
2494 
2495 static void register_types(void)
2496 {
2497     type_register_static(&qemu_console_info);
2498 }
2499 
2500 type_init(register_types);
2501