xref: /openbmc/qemu/ui/console.c (revision 10500ce2)
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 #include "qemu-common.h"
25 #include "ui/console.h"
26 #include "hw/qdev-core.h"
27 #include "qemu/timer.h"
28 #include "qmp-commands.h"
29 #include "sysemu/char.h"
30 #include "trace.h"
31 #include "exec/memory.h"
32 
33 #define DEFAULT_BACKSCROLL 512
34 #define CONSOLE_CURSOR_PERIOD 500
35 
36 typedef struct TextAttributes {
37     uint8_t fgcol:4;
38     uint8_t bgcol:4;
39     uint8_t bold:1;
40     uint8_t uline:1;
41     uint8_t blink:1;
42     uint8_t invers:1;
43     uint8_t unvisible:1;
44 } TextAttributes;
45 
46 typedef struct TextCell {
47     uint8_t ch;
48     TextAttributes t_attrib;
49 } TextCell;
50 
51 #define MAX_ESC_PARAMS 3
52 
53 enum TTYState {
54     TTY_STATE_NORM,
55     TTY_STATE_ESC,
56     TTY_STATE_CSI,
57 };
58 
59 typedef struct QEMUFIFO {
60     uint8_t *buf;
61     int buf_size;
62     int count, wptr, rptr;
63 } QEMUFIFO;
64 
65 static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
66 {
67     int l, len;
68 
69     l = f->buf_size - f->count;
70     if (len1 > l)
71         len1 = l;
72     len = len1;
73     while (len > 0) {
74         l = f->buf_size - f->wptr;
75         if (l > len)
76             l = len;
77         memcpy(f->buf + f->wptr, buf, l);
78         f->wptr += l;
79         if (f->wptr >= f->buf_size)
80             f->wptr = 0;
81         buf += l;
82         len -= l;
83     }
84     f->count += len1;
85     return len1;
86 }
87 
88 static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
89 {
90     int l, len;
91 
92     if (len1 > f->count)
93         len1 = f->count;
94     len = len1;
95     while (len > 0) {
96         l = f->buf_size - f->rptr;
97         if (l > len)
98             l = len;
99         memcpy(buf, f->buf + f->rptr, l);
100         f->rptr += l;
101         if (f->rptr >= f->buf_size)
102             f->rptr = 0;
103         buf += l;
104         len -= l;
105     }
106     f->count -= len1;
107     return len1;
108 }
109 
110 typedef enum {
111     GRAPHIC_CONSOLE,
112     TEXT_CONSOLE,
113     TEXT_CONSOLE_FIXED_SIZE
114 } console_type_t;
115 
116 struct QemuConsole {
117     Object parent;
118 
119     int index;
120     console_type_t console_type;
121     DisplayState *ds;
122     DisplaySurface *surface;
123     int dcls;
124 
125     /* Graphic console state.  */
126     Object *device;
127     uint32_t head;
128     QemuUIInfo ui_info;
129     QEMUTimer *ui_timer;
130     const GraphicHwOps *hw_ops;
131     void *hw;
132 
133     /* Text console state */
134     int width;
135     int height;
136     int total_height;
137     int backscroll_height;
138     int x, y;
139     int x_saved, y_saved;
140     int y_displayed;
141     int y_base;
142     TextAttributes t_attrib_default; /* default text attributes */
143     TextAttributes t_attrib; /* currently active text attributes */
144     TextCell *cells;
145     int text_x[2], text_y[2], cursor_invalidate;
146     int echo;
147 
148     int update_x0;
149     int update_y0;
150     int update_x1;
151     int update_y1;
152 
153     enum TTYState state;
154     int esc_params[MAX_ESC_PARAMS];
155     int nb_esc_params;
156 
157     CharDriverState *chr;
158     /* fifo for key pressed */
159     QEMUFIFO out_fifo;
160     uint8_t out_fifo_buf[16];
161     QEMUTimer *kbd_timer;
162 };
163 
164 struct DisplayState {
165     QEMUTimer *gui_timer;
166     uint64_t last_update;
167     uint64_t update_interval;
168     bool refreshing;
169     bool have_gfx;
170     bool have_text;
171 
172     QLIST_HEAD(, DisplayChangeListener) listeners;
173 };
174 
175 static DisplayState *display_state;
176 static QemuConsole *active_console;
177 static QemuConsole **consoles;
178 static int nb_consoles = 0;
179 static bool cursor_visible_phase;
180 static QEMUTimer *cursor_timer;
181 
182 static void text_console_do_init(CharDriverState *chr, DisplayState *ds);
183 static void dpy_refresh(DisplayState *s);
184 static DisplayState *get_alloc_displaystate(void);
185 static void text_console_update_cursor_timer(void);
186 static void text_console_update_cursor(void *opaque);
187 
188 static void gui_update(void *opaque)
189 {
190     uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
191     uint64_t dcl_interval;
192     DisplayState *ds = opaque;
193     DisplayChangeListener *dcl;
194     int i;
195 
196     ds->refreshing = true;
197     dpy_refresh(ds);
198     ds->refreshing = false;
199 
200     QLIST_FOREACH(dcl, &ds->listeners, next) {
201         dcl_interval = dcl->update_interval ?
202             dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
203         if (interval > dcl_interval) {
204             interval = dcl_interval;
205         }
206     }
207     if (ds->update_interval != interval) {
208         ds->update_interval = interval;
209         for (i = 0; i < nb_consoles; i++) {
210             if (consoles[i]->hw_ops->update_interval) {
211                 consoles[i]->hw_ops->update_interval(consoles[i]->hw, interval);
212             }
213         }
214         trace_console_refresh(interval);
215     }
216     ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
217     timer_mod(ds->gui_timer, ds->last_update + interval);
218 }
219 
220 static void gui_setup_refresh(DisplayState *ds)
221 {
222     DisplayChangeListener *dcl;
223     bool need_timer = false;
224     bool have_gfx = false;
225     bool have_text = false;
226 
227     QLIST_FOREACH(dcl, &ds->listeners, next) {
228         if (dcl->ops->dpy_refresh != NULL) {
229             need_timer = true;
230         }
231         if (dcl->ops->dpy_gfx_update != NULL) {
232             have_gfx = true;
233         }
234         if (dcl->ops->dpy_text_update != NULL) {
235             have_text = true;
236         }
237     }
238 
239     if (need_timer && ds->gui_timer == NULL) {
240         ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
241         timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
242     }
243     if (!need_timer && ds->gui_timer != NULL) {
244         timer_del(ds->gui_timer);
245         timer_free(ds->gui_timer);
246         ds->gui_timer = NULL;
247     }
248 
249     ds->have_gfx = have_gfx;
250     ds->have_text = have_text;
251 }
252 
253 void graphic_hw_update(QemuConsole *con)
254 {
255     if (!con) {
256         con = active_console;
257     }
258     if (con && con->hw_ops->gfx_update) {
259         con->hw_ops->gfx_update(con->hw);
260     }
261 }
262 
263 void graphic_hw_invalidate(QemuConsole *con)
264 {
265     if (!con) {
266         con = active_console;
267     }
268     if (con && con->hw_ops->invalidate) {
269         con->hw_ops->invalidate(con->hw);
270     }
271 }
272 
273 static void ppm_save(const char *filename, DisplaySurface *ds,
274                      Error **errp)
275 {
276     int width = pixman_image_get_width(ds->image);
277     int height = pixman_image_get_height(ds->image);
278     int fd;
279     FILE *f;
280     int y;
281     int ret;
282     pixman_image_t *linebuf;
283 
284     trace_ppm_save(filename, ds);
285     fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
286     if (fd == -1) {
287         error_setg(errp, "failed to open file '%s': %s", filename,
288                    strerror(errno));
289         return;
290     }
291     f = fdopen(fd, "wb");
292     ret = fprintf(f, "P6\n%d %d\n%d\n", width, height, 255);
293     if (ret < 0) {
294         linebuf = NULL;
295         goto write_err;
296     }
297     linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
298     for (y = 0; y < height; y++) {
299         qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y);
300         clearerr(f);
301         ret = fwrite(pixman_image_get_data(linebuf), 1,
302                      pixman_image_get_stride(linebuf), f);
303         (void)ret;
304         if (ferror(f)) {
305             goto write_err;
306         }
307     }
308 
309 out:
310     qemu_pixman_image_unref(linebuf);
311     fclose(f);
312     return;
313 
314 write_err:
315     error_setg(errp, "failed to write to file '%s': %s", filename,
316                strerror(errno));
317     unlink(filename);
318     goto out;
319 }
320 
321 void qmp_screendump(const char *filename, Error **errp)
322 {
323     QemuConsole *con = qemu_console_lookup_by_index(0);
324     DisplaySurface *surface;
325 
326     if (con == NULL) {
327         error_setg(errp, "There is no QemuConsole I can screendump from.");
328         return;
329     }
330 
331     graphic_hw_update(con);
332     surface = qemu_console_surface(con);
333     ppm_save(filename, surface, errp);
334 }
335 
336 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
337 {
338     if (!con) {
339         con = active_console;
340     }
341     if (con && con->hw_ops->text_update) {
342         con->hw_ops->text_update(con->hw, chardata);
343     }
344 }
345 
346 static void vga_fill_rect(QemuConsole *con,
347                           int posx, int posy, int width, int height,
348                           pixman_color_t color)
349 {
350     DisplaySurface *surface = qemu_console_surface(con);
351     pixman_rectangle16_t rect = {
352         .x = posx, .y = posy, .width = width, .height = height
353     };
354 
355     pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
356                                  &color, 1, &rect);
357 }
358 
359 /* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
360 static void vga_bitblt(QemuConsole *con,
361                        int xs, int ys, int xd, int yd, int w, int h)
362 {
363     DisplaySurface *surface = qemu_console_surface(con);
364 
365     pixman_image_composite(PIXMAN_OP_SRC,
366                            surface->image, NULL, surface->image,
367                            xs, ys, 0, 0, xd, yd, w, h);
368 }
369 
370 /***********************************************************/
371 /* basic char display */
372 
373 #define FONT_HEIGHT 16
374 #define FONT_WIDTH 8
375 
376 #include "vgafont.h"
377 
378 #ifndef CONFIG_CURSES
379 enum color_names {
380     COLOR_BLACK   = 0,
381     COLOR_RED     = 1,
382     COLOR_GREEN   = 2,
383     COLOR_YELLOW  = 3,
384     COLOR_BLUE    = 4,
385     COLOR_MAGENTA = 5,
386     COLOR_CYAN    = 6,
387     COLOR_WHITE   = 7
388 };
389 #endif
390 
391 #define QEMU_RGB(r, g, b)                                               \
392     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
393 
394 static const pixman_color_t color_table_rgb[2][8] = {
395     {   /* dark */
396         QEMU_RGB(0x00, 0x00, 0x00),  /* black */
397         QEMU_RGB(0xaa, 0x00, 0x00),  /* red */
398         QEMU_RGB(0x00, 0xaa, 0x00),  /* green */
399         QEMU_RGB(0xaa, 0xaa, 0x00),  /* yellow */
400         QEMU_RGB(0x00, 0x00, 0xaa),  /* blue */
401         QEMU_RGB(0xaa, 0x00, 0xaa),  /* magenta */
402         QEMU_RGB(0x00, 0xaa, 0xaa),  /* cyan */
403         QEMU_RGB(0xaa, 0xaa, 0xaa),  /* white */
404     },
405     {   /* bright */
406         QEMU_RGB(0x00, 0x00, 0x00),  /* black */
407         QEMU_RGB(0xff, 0x00, 0x00),  /* red */
408         QEMU_RGB(0x00, 0xff, 0x00),  /* green */
409         QEMU_RGB(0xff, 0xff, 0x00),  /* yellow */
410         QEMU_RGB(0x00, 0x00, 0xff),  /* blue */
411         QEMU_RGB(0xff, 0x00, 0xff),  /* magenta */
412         QEMU_RGB(0x00, 0xff, 0xff),  /* cyan */
413         QEMU_RGB(0xff, 0xff, 0xff),  /* white */
414     }
415 };
416 
417 static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
418                           TextAttributes *t_attrib)
419 {
420     static pixman_image_t *glyphs[256];
421     DisplaySurface *surface = qemu_console_surface(s);
422     pixman_color_t fgcol, bgcol;
423 
424     if (t_attrib->invers) {
425         bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
426         fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
427     } else {
428         fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
429         bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
430     }
431 
432     if (!glyphs[ch]) {
433         glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
434     }
435     qemu_pixman_glyph_render(glyphs[ch], surface->image,
436                              &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
437 }
438 
439 static void text_console_resize(QemuConsole *s)
440 {
441     TextCell *cells, *c, *c1;
442     int w1, x, y, last_width;
443 
444     last_width = s->width;
445     s->width = surface_width(s->surface) / FONT_WIDTH;
446     s->height = surface_height(s->surface) / FONT_HEIGHT;
447 
448     w1 = last_width;
449     if (s->width < w1)
450         w1 = s->width;
451 
452     cells = g_malloc(s->width * s->total_height * sizeof(TextCell));
453     for(y = 0; y < s->total_height; y++) {
454         c = &cells[y * s->width];
455         if (w1 > 0) {
456             c1 = &s->cells[y * last_width];
457             for(x = 0; x < w1; x++) {
458                 *c++ = *c1++;
459             }
460         }
461         for(x = w1; x < s->width; x++) {
462             c->ch = ' ';
463             c->t_attrib = s->t_attrib_default;
464             c++;
465         }
466     }
467     g_free(s->cells);
468     s->cells = cells;
469 }
470 
471 static inline void text_update_xy(QemuConsole *s, int x, int y)
472 {
473     s->text_x[0] = MIN(s->text_x[0], x);
474     s->text_x[1] = MAX(s->text_x[1], x);
475     s->text_y[0] = MIN(s->text_y[0], y);
476     s->text_y[1] = MAX(s->text_y[1], y);
477 }
478 
479 static void invalidate_xy(QemuConsole *s, int x, int y)
480 {
481     if (!qemu_console_is_visible(s)) {
482         return;
483     }
484     if (s->update_x0 > x * FONT_WIDTH)
485         s->update_x0 = x * FONT_WIDTH;
486     if (s->update_y0 > y * FONT_HEIGHT)
487         s->update_y0 = y * FONT_HEIGHT;
488     if (s->update_x1 < (x + 1) * FONT_WIDTH)
489         s->update_x1 = (x + 1) * FONT_WIDTH;
490     if (s->update_y1 < (y + 1) * FONT_HEIGHT)
491         s->update_y1 = (y + 1) * FONT_HEIGHT;
492 }
493 
494 static void update_xy(QemuConsole *s, int x, int y)
495 {
496     TextCell *c;
497     int y1, y2;
498 
499     if (s->ds->have_text) {
500         text_update_xy(s, x, y);
501     }
502 
503     y1 = (s->y_base + y) % s->total_height;
504     y2 = y1 - s->y_displayed;
505     if (y2 < 0) {
506         y2 += s->total_height;
507     }
508     if (y2 < s->height) {
509         c = &s->cells[y1 * s->width + x];
510         vga_putcharxy(s, x, y2, c->ch,
511                       &(c->t_attrib));
512         invalidate_xy(s, x, y2);
513     }
514 }
515 
516 static void console_show_cursor(QemuConsole *s, int show)
517 {
518     TextCell *c;
519     int y, y1;
520     int x = s->x;
521 
522     if (s->ds->have_text) {
523         s->cursor_invalidate = 1;
524     }
525 
526     if (x >= s->width) {
527         x = s->width - 1;
528     }
529     y1 = (s->y_base + s->y) % s->total_height;
530     y = y1 - s->y_displayed;
531     if (y < 0) {
532         y += s->total_height;
533     }
534     if (y < s->height) {
535         c = &s->cells[y1 * s->width + x];
536         if (show && cursor_visible_phase) {
537             TextAttributes t_attrib = s->t_attrib_default;
538             t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
539             vga_putcharxy(s, x, y, c->ch, &t_attrib);
540         } else {
541             vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
542         }
543         invalidate_xy(s, x, y);
544     }
545 }
546 
547 static void console_refresh(QemuConsole *s)
548 {
549     DisplaySurface *surface = qemu_console_surface(s);
550     TextCell *c;
551     int x, y, y1;
552 
553     if (s->ds->have_text) {
554         s->text_x[0] = 0;
555         s->text_y[0] = 0;
556         s->text_x[1] = s->width - 1;
557         s->text_y[1] = s->height - 1;
558         s->cursor_invalidate = 1;
559     }
560 
561     vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
562                   color_table_rgb[0][COLOR_BLACK]);
563     y1 = s->y_displayed;
564     for (y = 0; y < s->height; y++) {
565         c = s->cells + y1 * s->width;
566         for (x = 0; x < s->width; x++) {
567             vga_putcharxy(s, x, y, c->ch,
568                           &(c->t_attrib));
569             c++;
570         }
571         if (++y1 == s->total_height) {
572             y1 = 0;
573         }
574     }
575     console_show_cursor(s, 1);
576     dpy_gfx_update(s, 0, 0,
577                    surface_width(surface), surface_height(surface));
578 }
579 
580 static void console_scroll(QemuConsole *s, int ydelta)
581 {
582     int i, y1;
583 
584     if (ydelta > 0) {
585         for(i = 0; i < ydelta; i++) {
586             if (s->y_displayed == s->y_base)
587                 break;
588             if (++s->y_displayed == s->total_height)
589                 s->y_displayed = 0;
590         }
591     } else {
592         ydelta = -ydelta;
593         i = s->backscroll_height;
594         if (i > s->total_height - s->height)
595             i = s->total_height - s->height;
596         y1 = s->y_base - i;
597         if (y1 < 0)
598             y1 += s->total_height;
599         for(i = 0; i < ydelta; i++) {
600             if (s->y_displayed == y1)
601                 break;
602             if (--s->y_displayed < 0)
603                 s->y_displayed = s->total_height - 1;
604         }
605     }
606     console_refresh(s);
607 }
608 
609 static void console_put_lf(QemuConsole *s)
610 {
611     TextCell *c;
612     int x, y1;
613 
614     s->y++;
615     if (s->y >= s->height) {
616         s->y = s->height - 1;
617 
618         if (s->y_displayed == s->y_base) {
619             if (++s->y_displayed == s->total_height)
620                 s->y_displayed = 0;
621         }
622         if (++s->y_base == s->total_height)
623             s->y_base = 0;
624         if (s->backscroll_height < s->total_height)
625             s->backscroll_height++;
626         y1 = (s->y_base + s->height - 1) % s->total_height;
627         c = &s->cells[y1 * s->width];
628         for(x = 0; x < s->width; x++) {
629             c->ch = ' ';
630             c->t_attrib = s->t_attrib_default;
631             c++;
632         }
633         if (s->y_displayed == s->y_base) {
634             if (s->ds->have_text) {
635                 s->text_x[0] = 0;
636                 s->text_y[0] = 0;
637                 s->text_x[1] = s->width - 1;
638                 s->text_y[1] = s->height - 1;
639             }
640 
641             vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
642                        s->width * FONT_WIDTH,
643                        (s->height - 1) * FONT_HEIGHT);
644             vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
645                           s->width * FONT_WIDTH, FONT_HEIGHT,
646                           color_table_rgb[0][s->t_attrib_default.bgcol]);
647             s->update_x0 = 0;
648             s->update_y0 = 0;
649             s->update_x1 = s->width * FONT_WIDTH;
650             s->update_y1 = s->height * FONT_HEIGHT;
651         }
652     }
653 }
654 
655 /* Set console attributes depending on the current escape codes.
656  * NOTE: I know this code is not very efficient (checking every color for it
657  * self) but it is more readable and better maintainable.
658  */
659 static void console_handle_escape(QemuConsole *s)
660 {
661     int i;
662 
663     for (i=0; i<s->nb_esc_params; i++) {
664         switch (s->esc_params[i]) {
665             case 0: /* reset all console attributes to default */
666                 s->t_attrib = s->t_attrib_default;
667                 break;
668             case 1:
669                 s->t_attrib.bold = 1;
670                 break;
671             case 4:
672                 s->t_attrib.uline = 1;
673                 break;
674             case 5:
675                 s->t_attrib.blink = 1;
676                 break;
677             case 7:
678                 s->t_attrib.invers = 1;
679                 break;
680             case 8:
681                 s->t_attrib.unvisible = 1;
682                 break;
683             case 22:
684                 s->t_attrib.bold = 0;
685                 break;
686             case 24:
687                 s->t_attrib.uline = 0;
688                 break;
689             case 25:
690                 s->t_attrib.blink = 0;
691                 break;
692             case 27:
693                 s->t_attrib.invers = 0;
694                 break;
695             case 28:
696                 s->t_attrib.unvisible = 0;
697                 break;
698             /* set foreground color */
699             case 30:
700                 s->t_attrib.fgcol=COLOR_BLACK;
701                 break;
702             case 31:
703                 s->t_attrib.fgcol=COLOR_RED;
704                 break;
705             case 32:
706                 s->t_attrib.fgcol=COLOR_GREEN;
707                 break;
708             case 33:
709                 s->t_attrib.fgcol=COLOR_YELLOW;
710                 break;
711             case 34:
712                 s->t_attrib.fgcol=COLOR_BLUE;
713                 break;
714             case 35:
715                 s->t_attrib.fgcol=COLOR_MAGENTA;
716                 break;
717             case 36:
718                 s->t_attrib.fgcol=COLOR_CYAN;
719                 break;
720             case 37:
721                 s->t_attrib.fgcol=COLOR_WHITE;
722                 break;
723             /* set background color */
724             case 40:
725                 s->t_attrib.bgcol=COLOR_BLACK;
726                 break;
727             case 41:
728                 s->t_attrib.bgcol=COLOR_RED;
729                 break;
730             case 42:
731                 s->t_attrib.bgcol=COLOR_GREEN;
732                 break;
733             case 43:
734                 s->t_attrib.bgcol=COLOR_YELLOW;
735                 break;
736             case 44:
737                 s->t_attrib.bgcol=COLOR_BLUE;
738                 break;
739             case 45:
740                 s->t_attrib.bgcol=COLOR_MAGENTA;
741                 break;
742             case 46:
743                 s->t_attrib.bgcol=COLOR_CYAN;
744                 break;
745             case 47:
746                 s->t_attrib.bgcol=COLOR_WHITE;
747                 break;
748         }
749     }
750 }
751 
752 static void console_clear_xy(QemuConsole *s, int x, int y)
753 {
754     int y1 = (s->y_base + y) % s->total_height;
755     TextCell *c = &s->cells[y1 * s->width + x];
756     c->ch = ' ';
757     c->t_attrib = s->t_attrib_default;
758     update_xy(s, x, y);
759 }
760 
761 /* set cursor, checking bounds */
762 static void set_cursor(QemuConsole *s, int x, int y)
763 {
764     if (x < 0) {
765         x = 0;
766     }
767     if (y < 0) {
768         y = 0;
769     }
770     if (y >= s->height) {
771         y = s->height - 1;
772     }
773     if (x >= s->width) {
774         x = s->width - 1;
775     }
776 
777     s->x = x;
778     s->y = y;
779 }
780 
781 static void console_putchar(QemuConsole *s, int ch)
782 {
783     TextCell *c;
784     int y1, i;
785     int x, y;
786 
787     switch(s->state) {
788     case TTY_STATE_NORM:
789         switch(ch) {
790         case '\r':  /* carriage return */
791             s->x = 0;
792             break;
793         case '\n':  /* newline */
794             console_put_lf(s);
795             break;
796         case '\b':  /* backspace */
797             if (s->x > 0)
798                 s->x--;
799             break;
800         case '\t':  /* tabspace */
801             if (s->x + (8 - (s->x % 8)) > s->width) {
802                 s->x = 0;
803                 console_put_lf(s);
804             } else {
805                 s->x = s->x + (8 - (s->x % 8));
806             }
807             break;
808         case '\a':  /* alert aka. bell */
809             /* TODO: has to be implemented */
810             break;
811         case 14:
812             /* SI (shift in), character set 0 (ignored) */
813             break;
814         case 15:
815             /* SO (shift out), character set 1 (ignored) */
816             break;
817         case 27:    /* esc (introducing an escape sequence) */
818             s->state = TTY_STATE_ESC;
819             break;
820         default:
821             if (s->x >= s->width) {
822                 /* line wrap */
823                 s->x = 0;
824                 console_put_lf(s);
825             }
826             y1 = (s->y_base + s->y) % s->total_height;
827             c = &s->cells[y1 * s->width + s->x];
828             c->ch = ch;
829             c->t_attrib = s->t_attrib;
830             update_xy(s, s->x, s->y);
831             s->x++;
832             break;
833         }
834         break;
835     case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
836         if (ch == '[') {
837             for(i=0;i<MAX_ESC_PARAMS;i++)
838                 s->esc_params[i] = 0;
839             s->nb_esc_params = 0;
840             s->state = TTY_STATE_CSI;
841         } else {
842             s->state = TTY_STATE_NORM;
843         }
844         break;
845     case TTY_STATE_CSI: /* handle escape sequence parameters */
846         if (ch >= '0' && ch <= '9') {
847             if (s->nb_esc_params < MAX_ESC_PARAMS) {
848                 int *param = &s->esc_params[s->nb_esc_params];
849                 int digit = (ch - '0');
850 
851                 *param = (*param <= (INT_MAX - digit) / 10) ?
852                          *param * 10 + digit : INT_MAX;
853             }
854         } else {
855             if (s->nb_esc_params < MAX_ESC_PARAMS)
856                 s->nb_esc_params++;
857             if (ch == ';')
858                 break;
859             trace_console_putchar_csi(s->esc_params[0], s->esc_params[1],
860                                       ch, s->nb_esc_params);
861             s->state = TTY_STATE_NORM;
862             switch(ch) {
863             case 'A':
864                 /* move cursor up */
865                 if (s->esc_params[0] == 0) {
866                     s->esc_params[0] = 1;
867                 }
868                 set_cursor(s, s->x, s->y - s->esc_params[0]);
869                 break;
870             case 'B':
871                 /* move cursor down */
872                 if (s->esc_params[0] == 0) {
873                     s->esc_params[0] = 1;
874                 }
875                 set_cursor(s, s->x, s->y + s->esc_params[0]);
876                 break;
877             case 'C':
878                 /* move cursor right */
879                 if (s->esc_params[0] == 0) {
880                     s->esc_params[0] = 1;
881                 }
882                 set_cursor(s, s->x + s->esc_params[0], s->y);
883                 break;
884             case 'D':
885                 /* move cursor left */
886                 if (s->esc_params[0] == 0) {
887                     s->esc_params[0] = 1;
888                 }
889                 set_cursor(s, s->x - s->esc_params[0], s->y);
890                 break;
891             case 'G':
892                 /* move cursor to column */
893                 set_cursor(s, s->esc_params[0] - 1, s->y);
894                 break;
895             case 'f':
896             case 'H':
897                 /* move cursor to row, column */
898                 set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
899                 break;
900             case 'J':
901                 switch (s->esc_params[0]) {
902                 case 0:
903                     /* clear to end of screen */
904                     for (y = s->y; y < s->height; y++) {
905                         for (x = 0; x < s->width; x++) {
906                             if (y == s->y && x < s->x) {
907                                 continue;
908                             }
909                             console_clear_xy(s, x, y);
910                         }
911                     }
912                     break;
913                 case 1:
914                     /* clear from beginning of screen */
915                     for (y = 0; y <= s->y; y++) {
916                         for (x = 0; x < s->width; x++) {
917                             if (y == s->y && x > s->x) {
918                                 break;
919                             }
920                             console_clear_xy(s, x, y);
921                         }
922                     }
923                     break;
924                 case 2:
925                     /* clear entire screen */
926                     for (y = 0; y <= s->height; y++) {
927                         for (x = 0; x < s->width; x++) {
928                             console_clear_xy(s, x, y);
929                         }
930                     }
931                     break;
932                 }
933                 break;
934             case 'K':
935                 switch (s->esc_params[0]) {
936                 case 0:
937                     /* clear to eol */
938                     for(x = s->x; x < s->width; x++) {
939                         console_clear_xy(s, x, s->y);
940                     }
941                     break;
942                 case 1:
943                     /* clear from beginning of line */
944                     for (x = 0; x <= s->x; x++) {
945                         console_clear_xy(s, x, s->y);
946                     }
947                     break;
948                 case 2:
949                     /* clear entire line */
950                     for(x = 0; x < s->width; x++) {
951                         console_clear_xy(s, x, s->y);
952                     }
953                     break;
954                 }
955                 break;
956             case 'm':
957                 console_handle_escape(s);
958                 break;
959             case 'n':
960                 /* report cursor position */
961                 /* TODO: send ESC[row;colR */
962                 break;
963             case 's':
964                 /* save cursor position */
965                 s->x_saved = s->x;
966                 s->y_saved = s->y;
967                 break;
968             case 'u':
969                 /* restore cursor position */
970                 s->x = s->x_saved;
971                 s->y = s->y_saved;
972                 break;
973             default:
974                 trace_console_putchar_unhandled(ch);
975                 break;
976             }
977             break;
978         }
979     }
980 }
981 
982 void console_select(unsigned int index)
983 {
984     DisplayChangeListener *dcl;
985     QemuConsole *s;
986 
987     trace_console_select(index);
988     s = qemu_console_lookup_by_index(index);
989     if (s) {
990         DisplayState *ds = s->ds;
991 
992         active_console = s;
993         if (ds->have_gfx) {
994             QLIST_FOREACH(dcl, &ds->listeners, next) {
995                 if (dcl->con != NULL) {
996                     continue;
997                 }
998                 if (dcl->ops->dpy_gfx_switch) {
999                     dcl->ops->dpy_gfx_switch(dcl, s->surface);
1000                 }
1001             }
1002             dpy_gfx_update(s, 0, 0, surface_width(s->surface),
1003                            surface_height(s->surface));
1004         }
1005         if (ds->have_text) {
1006             dpy_text_resize(s, s->width, s->height);
1007         }
1008         text_console_update_cursor(NULL);
1009     }
1010 }
1011 
1012 static int console_puts(CharDriverState *chr, const uint8_t *buf, int len)
1013 {
1014     QemuConsole *s = chr->opaque;
1015     int i;
1016 
1017     s->update_x0 = s->width * FONT_WIDTH;
1018     s->update_y0 = s->height * FONT_HEIGHT;
1019     s->update_x1 = 0;
1020     s->update_y1 = 0;
1021     console_show_cursor(s, 0);
1022     for(i = 0; i < len; i++) {
1023         console_putchar(s, buf[i]);
1024     }
1025     console_show_cursor(s, 1);
1026     if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
1027         dpy_gfx_update(s, s->update_x0, s->update_y0,
1028                        s->update_x1 - s->update_x0,
1029                        s->update_y1 - s->update_y0);
1030     }
1031     return len;
1032 }
1033 
1034 static void kbd_send_chars(void *opaque)
1035 {
1036     QemuConsole *s = opaque;
1037     int len;
1038     uint8_t buf[16];
1039 
1040     len = qemu_chr_be_can_write(s->chr);
1041     if (len > s->out_fifo.count)
1042         len = s->out_fifo.count;
1043     if (len > 0) {
1044         if (len > sizeof(buf))
1045             len = sizeof(buf);
1046         qemu_fifo_read(&s->out_fifo, buf, len);
1047         qemu_chr_be_write(s->chr, buf, len);
1048     }
1049     /* characters are pending: we send them a bit later (XXX:
1050        horrible, should change char device API) */
1051     if (s->out_fifo.count > 0) {
1052         timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
1053     }
1054 }
1055 
1056 /* called when an ascii key is pressed */
1057 void kbd_put_keysym_console(QemuConsole *s, int keysym)
1058 {
1059     uint8_t buf[16], *q;
1060     int c;
1061 
1062     if (!s || (s->console_type == GRAPHIC_CONSOLE))
1063         return;
1064 
1065     switch(keysym) {
1066     case QEMU_KEY_CTRL_UP:
1067         console_scroll(s, -1);
1068         break;
1069     case QEMU_KEY_CTRL_DOWN:
1070         console_scroll(s, 1);
1071         break;
1072     case QEMU_KEY_CTRL_PAGEUP:
1073         console_scroll(s, -10);
1074         break;
1075     case QEMU_KEY_CTRL_PAGEDOWN:
1076         console_scroll(s, 10);
1077         break;
1078     default:
1079         /* convert the QEMU keysym to VT100 key string */
1080         q = buf;
1081         if (keysym >= 0xe100 && keysym <= 0xe11f) {
1082             *q++ = '\033';
1083             *q++ = '[';
1084             c = keysym - 0xe100;
1085             if (c >= 10)
1086                 *q++ = '0' + (c / 10);
1087             *q++ = '0' + (c % 10);
1088             *q++ = '~';
1089         } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
1090             *q++ = '\033';
1091             *q++ = '[';
1092             *q++ = keysym & 0xff;
1093         } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
1094             console_puts(s->chr, (const uint8_t *) "\r", 1);
1095             *q++ = '\n';
1096         } else {
1097             *q++ = keysym;
1098         }
1099         if (s->echo) {
1100             console_puts(s->chr, buf, q - buf);
1101         }
1102         if (s->chr->chr_read) {
1103             qemu_fifo_write(&s->out_fifo, buf, q - buf);
1104             kbd_send_chars(s);
1105         }
1106         break;
1107     }
1108 }
1109 
1110 static const int qcode_to_keysym[Q_KEY_CODE_MAX] = {
1111     [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
1112     [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
1113     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,
1114     [Q_KEY_CODE_LEFT]   = QEMU_KEY_LEFT,
1115     [Q_KEY_CODE_HOME]   = QEMU_KEY_HOME,
1116     [Q_KEY_CODE_END]    = QEMU_KEY_END,
1117     [Q_KEY_CODE_PGUP]   = QEMU_KEY_PAGEUP,
1118     [Q_KEY_CODE_PGDN]   = QEMU_KEY_PAGEDOWN,
1119     [Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
1120 };
1121 
1122 bool kbd_put_qcode_console(QemuConsole *s, int qcode)
1123 {
1124     int keysym;
1125 
1126     keysym = qcode_to_keysym[qcode];
1127     if (keysym == 0) {
1128         return false;
1129     }
1130     kbd_put_keysym_console(s, keysym);
1131     return true;
1132 }
1133 
1134 void kbd_put_string_console(QemuConsole *s, const char *str, int len)
1135 {
1136     int i;
1137 
1138     for (i = 0; i < len && str[i]; i++) {
1139         kbd_put_keysym_console(s, str[i]);
1140     }
1141 }
1142 
1143 void kbd_put_keysym(int keysym)
1144 {
1145     kbd_put_keysym_console(active_console, keysym);
1146 }
1147 
1148 static void text_console_invalidate(void *opaque)
1149 {
1150     QemuConsole *s = (QemuConsole *) opaque;
1151 
1152     if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
1153         text_console_resize(s);
1154     }
1155     console_refresh(s);
1156 }
1157 
1158 static void text_console_update(void *opaque, console_ch_t *chardata)
1159 {
1160     QemuConsole *s = (QemuConsole *) opaque;
1161     int i, j, src;
1162 
1163     if (s->text_x[0] <= s->text_x[1]) {
1164         src = (s->y_base + s->text_y[0]) * s->width;
1165         chardata += s->text_y[0] * s->width;
1166         for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
1167             for (j = 0; j < s->width; j ++, src ++)
1168                 console_write_ch(chardata ++, s->cells[src].ch |
1169                                 (s->cells[src].t_attrib.fgcol << 12) |
1170                                 (s->cells[src].t_attrib.bgcol << 8) |
1171                                 (s->cells[src].t_attrib.bold << 21));
1172         dpy_text_update(s, s->text_x[0], s->text_y[0],
1173                         s->text_x[1] - s->text_x[0], i - s->text_y[0]);
1174         s->text_x[0] = s->width;
1175         s->text_y[0] = s->height;
1176         s->text_x[1] = 0;
1177         s->text_y[1] = 0;
1178     }
1179     if (s->cursor_invalidate) {
1180         dpy_text_cursor(s, s->x, s->y);
1181         s->cursor_invalidate = 0;
1182     }
1183 }
1184 
1185 static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
1186                                 uint32_t head)
1187 {
1188     Object *obj;
1189     QemuConsole *s;
1190     int i;
1191 
1192     obj = object_new(TYPE_QEMU_CONSOLE);
1193     s = QEMU_CONSOLE(obj);
1194     s->head = head;
1195     object_property_add_link(obj, "device", TYPE_DEVICE,
1196                              (Object **)&s->device,
1197                              object_property_allow_set_link,
1198                              OBJ_PROP_LINK_UNREF_ON_RELEASE,
1199                              &error_abort);
1200     object_property_add_uint32_ptr(obj, "head",
1201                                    &s->head, &error_abort);
1202 
1203     if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
1204         (console_type == GRAPHIC_CONSOLE))) {
1205         active_console = s;
1206     }
1207     s->ds = ds;
1208     s->console_type = console_type;
1209 
1210     consoles = g_realloc(consoles, sizeof(*consoles) * (nb_consoles+1));
1211     if (console_type != GRAPHIC_CONSOLE) {
1212         s->index = nb_consoles;
1213         consoles[nb_consoles++] = s;
1214     } else {
1215         /* HACK: Put graphical consoles before text consoles.  */
1216         for (i = nb_consoles; i > 0; i--) {
1217             if (consoles[i - 1]->console_type == GRAPHIC_CONSOLE)
1218                 break;
1219             consoles[i] = consoles[i - 1];
1220             consoles[i]->index = i;
1221         }
1222         s->index = i;
1223         consoles[i] = s;
1224         nb_consoles++;
1225     }
1226     return s;
1227 }
1228 
1229 static void qemu_alloc_display(DisplaySurface *surface, int width, int height)
1230 {
1231     qemu_pixman_image_unref(surface->image);
1232     surface->image = NULL;
1233 
1234     surface->format = PIXMAN_x8r8g8b8;
1235     surface->image = pixman_image_create_bits(surface->format,
1236                                               width, height,
1237                                               NULL, width * 4);
1238     assert(surface->image != NULL);
1239 
1240     surface->flags = QEMU_ALLOCATED_FLAG;
1241 }
1242 
1243 DisplaySurface *qemu_create_displaysurface(int width, int height)
1244 {
1245     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1246 
1247     trace_displaysurface_create(surface, width, height);
1248     qemu_alloc_display(surface, width, height);
1249     return surface;
1250 }
1251 
1252 DisplaySurface *qemu_create_displaysurface_from(int width, int height,
1253                                                 pixman_format_code_t format,
1254                                                 int linesize, uint8_t *data)
1255 {
1256     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1257 
1258     trace_displaysurface_create_from(surface, width, height, format);
1259     surface->format = format;
1260     surface->image = pixman_image_create_bits(surface->format,
1261                                               width, height,
1262                                               (void *)data, linesize);
1263     assert(surface->image != NULL);
1264 
1265     return surface;
1266 }
1267 
1268 static void qemu_unmap_displaysurface_guestmem(pixman_image_t *image,
1269                                                void *unused)
1270 {
1271     void *data = pixman_image_get_data(image);
1272     uint32_t size = pixman_image_get_stride(image) *
1273         pixman_image_get_height(image);
1274     cpu_physical_memory_unmap(data, size, 0, 0);
1275 }
1276 
1277 DisplaySurface *qemu_create_displaysurface_guestmem(int width, int height,
1278                                                     pixman_format_code_t format,
1279                                                     int linesize, uint64_t addr)
1280 {
1281     DisplaySurface *surface;
1282     hwaddr size;
1283     void *data;
1284 
1285     if (linesize == 0) {
1286         linesize = width * PIXMAN_FORMAT_BPP(format) / 8;
1287     }
1288 
1289     size = (hwaddr)linesize * height;
1290     data = cpu_physical_memory_map(addr, &size, 0);
1291     if (size != (hwaddr)linesize * height) {
1292         cpu_physical_memory_unmap(data, size, 0, 0);
1293         return NULL;
1294     }
1295 
1296     surface = qemu_create_displaysurface_from
1297         (width, height, format, linesize, data);
1298     pixman_image_set_destroy_function
1299         (surface->image, qemu_unmap_displaysurface_guestmem, NULL);
1300 
1301     return surface;
1302 }
1303 
1304 static DisplaySurface *qemu_create_message_surface(int w, int h,
1305                                                    const char *msg)
1306 {
1307     DisplaySurface *surface = qemu_create_displaysurface(w, h);
1308     pixman_color_t bg = color_table_rgb[0][COLOR_BLACK];
1309     pixman_color_t fg = color_table_rgb[0][COLOR_WHITE];
1310     pixman_image_t *glyph;
1311     int len, x, y, i;
1312 
1313     len = strlen(msg);
1314     x = (w / FONT_WIDTH  - len) / 2;
1315     y = (h / FONT_HEIGHT - 1)   / 2;
1316     for (i = 0; i < len; i++) {
1317         glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
1318         qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
1319                                  x+i, y, FONT_WIDTH, FONT_HEIGHT);
1320         qemu_pixman_image_unref(glyph);
1321     }
1322     return surface;
1323 }
1324 
1325 void qemu_free_displaysurface(DisplaySurface *surface)
1326 {
1327     if (surface == NULL) {
1328         return;
1329     }
1330     trace_displaysurface_free(surface);
1331     qemu_pixman_image_unref(surface->image);
1332     g_free(surface);
1333 }
1334 
1335 void register_displaychangelistener(DisplayChangeListener *dcl)
1336 {
1337     static const char nodev[] =
1338         "This VM has no graphic display device.";
1339     static DisplaySurface *dummy;
1340     QemuConsole *con;
1341 
1342     trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
1343     dcl->ds = get_alloc_displaystate();
1344     QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
1345     gui_setup_refresh(dcl->ds);
1346     if (dcl->con) {
1347         dcl->con->dcls++;
1348         con = dcl->con;
1349     } else {
1350         con = active_console;
1351     }
1352     if (dcl->ops->dpy_gfx_switch) {
1353         if (con) {
1354             dcl->ops->dpy_gfx_switch(dcl, con->surface);
1355         } else {
1356             if (!dummy) {
1357                 dummy = qemu_create_message_surface(640, 480, nodev);
1358             }
1359             dcl->ops->dpy_gfx_switch(dcl, dummy);
1360         }
1361     }
1362     text_console_update_cursor(NULL);
1363 }
1364 
1365 void update_displaychangelistener(DisplayChangeListener *dcl,
1366                                   uint64_t interval)
1367 {
1368     DisplayState *ds = dcl->ds;
1369 
1370     dcl->update_interval = interval;
1371     if (!ds->refreshing && ds->update_interval > interval) {
1372         timer_mod(ds->gui_timer, ds->last_update + interval);
1373     }
1374 }
1375 
1376 void unregister_displaychangelistener(DisplayChangeListener *dcl)
1377 {
1378     DisplayState *ds = dcl->ds;
1379     trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
1380     if (dcl->con) {
1381         dcl->con->dcls--;
1382     }
1383     QLIST_REMOVE(dcl, next);
1384     gui_setup_refresh(ds);
1385 }
1386 
1387 static void dpy_set_ui_info_timer(void *opaque)
1388 {
1389     QemuConsole *con = opaque;
1390 
1391     con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
1392 }
1393 
1394 bool dpy_ui_info_supported(QemuConsole *con)
1395 {
1396     return con->hw_ops->ui_info != NULL;
1397 }
1398 
1399 int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
1400 {
1401     assert(con != NULL);
1402     con->ui_info = *info;
1403     if (!dpy_ui_info_supported(con)) {
1404         return -1;
1405     }
1406 
1407     /*
1408      * Typically we get a flood of these as the user resizes the window.
1409      * Wait until the dust has settled (one second without updates), then
1410      * go notify the guest.
1411      */
1412     timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
1413     return 0;
1414 }
1415 
1416 void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
1417 {
1418     DisplayState *s = con->ds;
1419     DisplayChangeListener *dcl;
1420     int width = surface_width(con->surface);
1421     int height = surface_height(con->surface);
1422 
1423     x = MAX(x, 0);
1424     y = MAX(y, 0);
1425     x = MIN(x, width);
1426     y = MIN(y, height);
1427     w = MIN(w, width - x);
1428     h = MIN(h, height - y);
1429 
1430     if (!qemu_console_is_visible(con)) {
1431         return;
1432     }
1433     QLIST_FOREACH(dcl, &s->listeners, next) {
1434         if (con != (dcl->con ? dcl->con : active_console)) {
1435             continue;
1436         }
1437         if (dcl->ops->dpy_gfx_update) {
1438             dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
1439         }
1440     }
1441 }
1442 
1443 void dpy_gfx_replace_surface(QemuConsole *con,
1444                              DisplaySurface *surface)
1445 {
1446     DisplayState *s = con->ds;
1447     DisplaySurface *old_surface = con->surface;
1448     DisplayChangeListener *dcl;
1449 
1450     con->surface = surface;
1451     QLIST_FOREACH(dcl, &s->listeners, next) {
1452         if (con != (dcl->con ? dcl->con : active_console)) {
1453             continue;
1454         }
1455         if (dcl->ops->dpy_gfx_switch) {
1456             dcl->ops->dpy_gfx_switch(dcl, surface);
1457         }
1458     }
1459     qemu_free_displaysurface(old_surface);
1460 }
1461 
1462 bool dpy_gfx_check_format(QemuConsole *con,
1463                           pixman_format_code_t format)
1464 {
1465     DisplayChangeListener *dcl;
1466     DisplayState *s = con->ds;
1467 
1468     QLIST_FOREACH(dcl, &s->listeners, next) {
1469         if (dcl->con && dcl->con != con) {
1470             /* dcl bound to another console -> skip */
1471             continue;
1472         }
1473         if (dcl->ops->dpy_gfx_check_format) {
1474             if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
1475                 return false;
1476             }
1477         } else {
1478             /* default is to whitelist native 32 bpp only */
1479             if (format != qemu_default_pixman_format(32, true)) {
1480                 return false;
1481             }
1482         }
1483     }
1484     return true;
1485 }
1486 
1487 static void dpy_refresh(DisplayState *s)
1488 {
1489     DisplayChangeListener *dcl;
1490 
1491     QLIST_FOREACH(dcl, &s->listeners, next) {
1492         if (dcl->ops->dpy_refresh) {
1493             dcl->ops->dpy_refresh(dcl);
1494         }
1495     }
1496 }
1497 
1498 void dpy_gfx_copy(QemuConsole *con, int src_x, int src_y,
1499                   int dst_x, int dst_y, int w, int h)
1500 {
1501     DisplayState *s = con->ds;
1502     DisplayChangeListener *dcl;
1503 
1504     if (!qemu_console_is_visible(con)) {
1505         return;
1506     }
1507     QLIST_FOREACH(dcl, &s->listeners, next) {
1508         if (con != (dcl->con ? dcl->con : active_console)) {
1509             continue;
1510         }
1511         if (dcl->ops->dpy_gfx_copy) {
1512             dcl->ops->dpy_gfx_copy(dcl, src_x, src_y, dst_x, dst_y, w, h);
1513         } else { /* TODO */
1514             dcl->ops->dpy_gfx_update(dcl, dst_x, dst_y, w, h);
1515         }
1516     }
1517 }
1518 
1519 void dpy_text_cursor(QemuConsole *con, int x, int y)
1520 {
1521     DisplayState *s = con->ds;
1522     DisplayChangeListener *dcl;
1523 
1524     if (!qemu_console_is_visible(con)) {
1525         return;
1526     }
1527     QLIST_FOREACH(dcl, &s->listeners, next) {
1528         if (con != (dcl->con ? dcl->con : active_console)) {
1529             continue;
1530         }
1531         if (dcl->ops->dpy_text_cursor) {
1532             dcl->ops->dpy_text_cursor(dcl, x, y);
1533         }
1534     }
1535 }
1536 
1537 void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
1538 {
1539     DisplayState *s = con->ds;
1540     DisplayChangeListener *dcl;
1541 
1542     if (!qemu_console_is_visible(con)) {
1543         return;
1544     }
1545     QLIST_FOREACH(dcl, &s->listeners, next) {
1546         if (con != (dcl->con ? dcl->con : active_console)) {
1547             continue;
1548         }
1549         if (dcl->ops->dpy_text_update) {
1550             dcl->ops->dpy_text_update(dcl, x, y, w, h);
1551         }
1552     }
1553 }
1554 
1555 void dpy_text_resize(QemuConsole *con, int w, int h)
1556 {
1557     DisplayState *s = con->ds;
1558     DisplayChangeListener *dcl;
1559 
1560     if (!qemu_console_is_visible(con)) {
1561         return;
1562     }
1563     QLIST_FOREACH(dcl, &s->listeners, next) {
1564         if (con != (dcl->con ? dcl->con : active_console)) {
1565             continue;
1566         }
1567         if (dcl->ops->dpy_text_resize) {
1568             dcl->ops->dpy_text_resize(dcl, w, h);
1569         }
1570     }
1571 }
1572 
1573 void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
1574 {
1575     DisplayState *s = con->ds;
1576     DisplayChangeListener *dcl;
1577 
1578     if (!qemu_console_is_visible(con)) {
1579         return;
1580     }
1581     QLIST_FOREACH(dcl, &s->listeners, next) {
1582         if (con != (dcl->con ? dcl->con : active_console)) {
1583             continue;
1584         }
1585         if (dcl->ops->dpy_mouse_set) {
1586             dcl->ops->dpy_mouse_set(dcl, x, y, on);
1587         }
1588     }
1589 }
1590 
1591 void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
1592 {
1593     DisplayState *s = con->ds;
1594     DisplayChangeListener *dcl;
1595 
1596     if (!qemu_console_is_visible(con)) {
1597         return;
1598     }
1599     QLIST_FOREACH(dcl, &s->listeners, next) {
1600         if (con != (dcl->con ? dcl->con : active_console)) {
1601             continue;
1602         }
1603         if (dcl->ops->dpy_cursor_define) {
1604             dcl->ops->dpy_cursor_define(dcl, cursor);
1605         }
1606     }
1607 }
1608 
1609 bool dpy_cursor_define_supported(QemuConsole *con)
1610 {
1611     DisplayState *s = con->ds;
1612     DisplayChangeListener *dcl;
1613 
1614     QLIST_FOREACH(dcl, &s->listeners, next) {
1615         if (dcl->ops->dpy_cursor_define) {
1616             return true;
1617         }
1618     }
1619     return false;
1620 }
1621 
1622 /***********************************************************/
1623 /* register display */
1624 
1625 /* console.c internal use only */
1626 static DisplayState *get_alloc_displaystate(void)
1627 {
1628     if (!display_state) {
1629         display_state = g_new0(DisplayState, 1);
1630         cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1631                                     text_console_update_cursor, NULL);
1632     }
1633     return display_state;
1634 }
1635 
1636 /*
1637  * Called by main(), after creating QemuConsoles
1638  * and before initializing ui (sdl/vnc/...).
1639  */
1640 DisplayState *init_displaystate(void)
1641 {
1642     gchar *name;
1643     int i;
1644 
1645     get_alloc_displaystate();
1646     for (i = 0; i < nb_consoles; i++) {
1647         if (consoles[i]->console_type != GRAPHIC_CONSOLE &&
1648             consoles[i]->ds == NULL) {
1649             text_console_do_init(consoles[i]->chr, display_state);
1650         }
1651 
1652         /* Hook up into the qom tree here (not in new_console()), once
1653          * all QemuConsoles are created and the order / numbering
1654          * doesn't change any more */
1655         name = g_strdup_printf("console[%d]", i);
1656         object_property_add_child(container_get(object_get_root(), "/backend"),
1657                                   name, OBJECT(consoles[i]), &error_abort);
1658         g_free(name);
1659     }
1660 
1661     return display_state;
1662 }
1663 
1664 void graphic_console_set_hwops(QemuConsole *con,
1665                                const GraphicHwOps *hw_ops,
1666                                void *opaque)
1667 {
1668     con->hw_ops = hw_ops;
1669     con->hw = opaque;
1670 }
1671 
1672 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
1673                                   const GraphicHwOps *hw_ops,
1674                                   void *opaque)
1675 {
1676     static const char noinit[] =
1677         "Guest has not initialized the display (yet).";
1678     int width = 640;
1679     int height = 480;
1680     QemuConsole *s;
1681     DisplayState *ds;
1682 
1683     ds = get_alloc_displaystate();
1684     trace_console_gfx_new();
1685     s = new_console(ds, GRAPHIC_CONSOLE, head);
1686     s->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, dpy_set_ui_info_timer, s);
1687     graphic_console_set_hwops(s, hw_ops, opaque);
1688     if (dev) {
1689         object_property_set_link(OBJECT(s), OBJECT(dev), "device",
1690                                  &error_abort);
1691     }
1692 
1693     s->surface = qemu_create_message_surface(width, height, noinit);
1694     return s;
1695 }
1696 
1697 QemuConsole *qemu_console_lookup_by_index(unsigned int index)
1698 {
1699     if (index >= nb_consoles) {
1700         return NULL;
1701     }
1702     return consoles[index];
1703 }
1704 
1705 QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
1706 {
1707     Object *obj;
1708     uint32_t h;
1709     int i;
1710 
1711     for (i = 0; i < nb_consoles; i++) {
1712         if (!consoles[i]) {
1713             continue;
1714         }
1715         obj = object_property_get_link(OBJECT(consoles[i]),
1716                                        "device", &error_abort);
1717         if (DEVICE(obj) != dev) {
1718             continue;
1719         }
1720         h = object_property_get_int(OBJECT(consoles[i]),
1721                                     "head", &error_abort);
1722         if (h != head) {
1723             continue;
1724         }
1725         return consoles[i];
1726     }
1727     return NULL;
1728 }
1729 
1730 bool qemu_console_is_visible(QemuConsole *con)
1731 {
1732     return (con == active_console) || (con->dcls > 0);
1733 }
1734 
1735 bool qemu_console_is_graphic(QemuConsole *con)
1736 {
1737     if (con == NULL) {
1738         con = active_console;
1739     }
1740     return con && (con->console_type == GRAPHIC_CONSOLE);
1741 }
1742 
1743 bool qemu_console_is_fixedsize(QemuConsole *con)
1744 {
1745     if (con == NULL) {
1746         con = active_console;
1747     }
1748     return con && (con->console_type != TEXT_CONSOLE);
1749 }
1750 
1751 char *qemu_console_get_label(QemuConsole *con)
1752 {
1753     if (con->console_type == GRAPHIC_CONSOLE) {
1754         if (con->device) {
1755             return g_strdup(object_get_typename(con->device));
1756         }
1757         return g_strdup("VGA");
1758     } else {
1759         if (con->chr && con->chr->label) {
1760             return g_strdup(con->chr->label);
1761         }
1762         return g_strdup_printf("vc%d", con->index);
1763     }
1764 }
1765 
1766 int qemu_console_get_index(QemuConsole *con)
1767 {
1768     if (con == NULL) {
1769         con = active_console;
1770     }
1771     return con ? con->index : -1;
1772 }
1773 
1774 uint32_t qemu_console_get_head(QemuConsole *con)
1775 {
1776     if (con == NULL) {
1777         con = active_console;
1778     }
1779     return con ? con->head : -1;
1780 }
1781 
1782 QemuUIInfo *qemu_console_get_ui_info(QemuConsole *con)
1783 {
1784     assert(con != NULL);
1785     return &con->ui_info;
1786 }
1787 
1788 int qemu_console_get_width(QemuConsole *con, int fallback)
1789 {
1790     if (con == NULL) {
1791         con = active_console;
1792     }
1793     return con ? surface_width(con->surface) : fallback;
1794 }
1795 
1796 int qemu_console_get_height(QemuConsole *con, int fallback)
1797 {
1798     if (con == NULL) {
1799         con = active_console;
1800     }
1801     return con ? surface_height(con->surface) : fallback;
1802 }
1803 
1804 static void text_console_set_echo(CharDriverState *chr, bool echo)
1805 {
1806     QemuConsole *s = chr->opaque;
1807 
1808     s->echo = echo;
1809 }
1810 
1811 static void text_console_update_cursor_timer(void)
1812 {
1813     timer_mod(cursor_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
1814               + CONSOLE_CURSOR_PERIOD / 2);
1815 }
1816 
1817 static void text_console_update_cursor(void *opaque)
1818 {
1819     QemuConsole *s;
1820     int i, count = 0;
1821 
1822     cursor_visible_phase = !cursor_visible_phase;
1823 
1824     for (i = 0; i < nb_consoles; i++) {
1825         s = consoles[i];
1826         if (qemu_console_is_graphic(s) ||
1827             !qemu_console_is_visible(s)) {
1828             continue;
1829         }
1830         count++;
1831         graphic_hw_invalidate(s);
1832     }
1833 
1834     if (count) {
1835         text_console_update_cursor_timer();
1836     }
1837 }
1838 
1839 static const GraphicHwOps text_console_ops = {
1840     .invalidate  = text_console_invalidate,
1841     .text_update = text_console_update,
1842 };
1843 
1844 static void text_console_do_init(CharDriverState *chr, DisplayState *ds)
1845 {
1846     QemuConsole *s;
1847     int g_width = 80 * FONT_WIDTH;
1848     int g_height = 24 * FONT_HEIGHT;
1849 
1850     s = chr->opaque;
1851 
1852     chr->chr_write = console_puts;
1853 
1854     s->out_fifo.buf = s->out_fifo_buf;
1855     s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
1856     s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
1857     s->ds = ds;
1858 
1859     s->y_displayed = 0;
1860     s->y_base = 0;
1861     s->total_height = DEFAULT_BACKSCROLL;
1862     s->x = 0;
1863     s->y = 0;
1864     if (!s->surface) {
1865         if (active_console && active_console->surface) {
1866             g_width = surface_width(active_console->surface);
1867             g_height = surface_height(active_console->surface);
1868         }
1869         s->surface = qemu_create_displaysurface(g_width, g_height);
1870     }
1871 
1872     s->hw_ops = &text_console_ops;
1873     s->hw = s;
1874 
1875     /* Set text attribute defaults */
1876     s->t_attrib_default.bold = 0;
1877     s->t_attrib_default.uline = 0;
1878     s->t_attrib_default.blink = 0;
1879     s->t_attrib_default.invers = 0;
1880     s->t_attrib_default.unvisible = 0;
1881     s->t_attrib_default.fgcol = COLOR_WHITE;
1882     s->t_attrib_default.bgcol = COLOR_BLACK;
1883     /* set current text attributes to default */
1884     s->t_attrib = s->t_attrib_default;
1885     text_console_resize(s);
1886 
1887     if (chr->label) {
1888         char msg[128];
1889         int len;
1890 
1891         s->t_attrib.bgcol = COLOR_BLUE;
1892         len = snprintf(msg, sizeof(msg), "%s console\r\n", chr->label);
1893         console_puts(chr, (uint8_t*)msg, len);
1894         s->t_attrib = s->t_attrib_default;
1895     }
1896 
1897     qemu_chr_be_generic_open(chr);
1898     if (chr->init)
1899         chr->init(chr);
1900 }
1901 
1902 static CharDriverState *text_console_init(ChardevVC *vc)
1903 {
1904     CharDriverState *chr;
1905     QemuConsole *s;
1906     unsigned width = 0;
1907     unsigned height = 0;
1908 
1909     chr = qemu_chr_alloc();
1910 
1911     if (vc->has_width) {
1912         width = vc->width;
1913     } else if (vc->has_cols) {
1914         width = vc->cols * FONT_WIDTH;
1915     }
1916 
1917     if (vc->has_height) {
1918         height = vc->height;
1919     } else if (vc->has_rows) {
1920         height = vc->rows * FONT_HEIGHT;
1921     }
1922 
1923     trace_console_txt_new(width, height);
1924     if (width == 0 || height == 0) {
1925         s = new_console(NULL, TEXT_CONSOLE, 0);
1926     } else {
1927         s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE, 0);
1928         s->surface = qemu_create_displaysurface(width, height);
1929     }
1930 
1931     if (!s) {
1932         g_free(chr);
1933         return NULL;
1934     }
1935 
1936     s->chr = chr;
1937     chr->opaque = s;
1938     chr->chr_set_echo = text_console_set_echo;
1939     /* console/chardev init sometimes completes elsewhere in a 2nd
1940      * stage, so defer OPENED events until they are fully initialized
1941      */
1942     chr->explicit_be_open = true;
1943 
1944     if (display_state) {
1945         text_console_do_init(chr, display_state);
1946     }
1947     return chr;
1948 }
1949 
1950 static VcHandler *vc_handler = text_console_init;
1951 
1952 CharDriverState *vc_init(ChardevVC *vc)
1953 {
1954     return vc_handler(vc);
1955 }
1956 
1957 void register_vc_handler(VcHandler *handler)
1958 {
1959     vc_handler = handler;
1960 }
1961 
1962 void qemu_console_resize(QemuConsole *s, int width, int height)
1963 {
1964     DisplaySurface *surface;
1965 
1966     assert(s->console_type == GRAPHIC_CONSOLE);
1967     surface = qemu_create_displaysurface(width, height);
1968     dpy_gfx_replace_surface(s, surface);
1969 }
1970 
1971 void qemu_console_copy(QemuConsole *con, int src_x, int src_y,
1972                        int dst_x, int dst_y, int w, int h)
1973 {
1974     assert(con->console_type == GRAPHIC_CONSOLE);
1975     dpy_gfx_copy(con, src_x, src_y, dst_x, dst_y, w, h);
1976 }
1977 
1978 DisplaySurface *qemu_console_surface(QemuConsole *console)
1979 {
1980     return console->surface;
1981 }
1982 
1983 PixelFormat qemu_default_pixelformat(int bpp)
1984 {
1985     pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
1986     PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
1987     return pf;
1988 }
1989 
1990 static void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend,
1991                               Error **errp)
1992 {
1993     int val;
1994 
1995     backend->vc = g_new0(ChardevVC, 1);
1996 
1997     val = qemu_opt_get_number(opts, "width", 0);
1998     if (val != 0) {
1999         backend->vc->has_width = true;
2000         backend->vc->width = val;
2001     }
2002 
2003     val = qemu_opt_get_number(opts, "height", 0);
2004     if (val != 0) {
2005         backend->vc->has_height = true;
2006         backend->vc->height = val;
2007     }
2008 
2009     val = qemu_opt_get_number(opts, "cols", 0);
2010     if (val != 0) {
2011         backend->vc->has_cols = true;
2012         backend->vc->cols = val;
2013     }
2014 
2015     val = qemu_opt_get_number(opts, "rows", 0);
2016     if (val != 0) {
2017         backend->vc->has_rows = true;
2018         backend->vc->rows = val;
2019     }
2020 }
2021 
2022 static const TypeInfo qemu_console_info = {
2023     .name = TYPE_QEMU_CONSOLE,
2024     .parent = TYPE_OBJECT,
2025     .instance_size = sizeof(QemuConsole),
2026     .class_size = sizeof(QemuConsoleClass),
2027 };
2028 
2029 
2030 static void register_types(void)
2031 {
2032     type_register_static(&qemu_console_info);
2033     register_char_driver("vc", CHARDEV_BACKEND_KIND_VC, qemu_chr_parse_vc);
2034 }
2035 
2036 type_init(register_types);
2037