2 * QEMU TCX Frame buffer
4 * Copyright (c) 2003-2005 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #define TCX_DAC_NREGS 16
30 typedef struct TCXState {
34 uint32_t *vram24, *cplane;
35 ram_addr_t vram_offset, vram24_offset, cplane_offset;
36 uint16_t width, height, depth;
37 uint8_t r[256], g[256], b[256];
38 uint32_t palette[256];
39 uint8_t dac_index, dac_state;
42 static void tcx_screen_dump(void *opaque, const char *filename);
43 static void tcx24_screen_dump(void *opaque, const char *filename);
45 /* XXX: unify with vga draw line functions */
46 static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
48 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
51 static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
53 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
56 static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
58 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
61 static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
63 return (r << 16) | (g << 8) | b;
66 static void update_palette_entries(TCXState *s, int start, int end)
69 for(i = start; i < end; i++) {
70 switch(s->ds->depth) {
73 s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
76 s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
79 s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
82 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
88 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
89 const uint8_t *s, int width)
93 uint32_t *p = (uint32_t *)d;
95 for(x = 0; x < width; x++) {
97 *p++ = s1->palette[val];
101 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
102 const uint8_t *s, int width)
106 uint16_t *p = (uint16_t *)d;
108 for(x = 0; x < width; x++) {
110 *p++ = s1->palette[val];
114 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
115 const uint8_t *s, int width)
120 for(x = 0; x < width; x++) {
122 *d++ = s1->palette[val];
126 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
127 const uint8_t *s, int width,
128 const uint32_t *cplane,
133 uint32_t *p = (uint32_t *)d;
136 for(x = 0; x < width; x++, s++, s24++) {
137 if ((bswap32(*cplane++) & 0xff000000) == 0x03000000) { // 24-bit direct
138 dval = bswap32(*s24) & 0x00ffffff;
141 dval = s1->palette[val];
147 static inline int check_dirty(TCXState *ts, ram_addr_t page, ram_addr_t page24,
153 ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
154 for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
155 ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
156 ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
161 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
162 ram_addr_t page_max, ram_addr_t page24,
165 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
167 page_min -= ts->vram_offset;
168 page_max -= ts->vram_offset;
169 cpu_physical_memory_reset_dirty(page24 + page_min * 4,
170 page24 + page_max * 4 + TARGET_PAGE_SIZE,
172 cpu_physical_memory_reset_dirty(cpage + page_min * 4,
173 cpage + page_max * 4 + TARGET_PAGE_SIZE,
177 /* Fixed line length 1024 allows us to do nice tricks not possible on
179 static void tcx_update_display(void *opaque)
181 TCXState *ts = opaque;
182 ram_addr_t page, page_min, page_max;
183 int y, y_start, dd, ds;
185 void (*f)(TCXState *s1, uint8_t *d, const uint8_t *s, int width);
187 if (ts->ds->depth == 0)
189 page = ts->vram_offset;
191 page_min = 0xffffffff;
195 dd = ts->ds->linesize;
198 switch (ts->ds->depth) {
214 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
215 if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
222 f(ts, d, s, ts->width);
225 f(ts, d, s, ts->width);
228 f(ts, d, s, ts->width);
231 f(ts, d, s, ts->width);
236 /* flush to display */
237 dpy_update(ts->ds, 0, y_start,
238 ts->width, y - y_start);
246 /* flush to display */
247 dpy_update(ts->ds, 0, y_start,
248 ts->width, y - y_start);
250 /* reset modified pages */
251 if (page_min <= page_max) {
252 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
257 static void tcx24_update_display(void *opaque)
259 TCXState *ts = opaque;
260 ram_addr_t page, page_min, page_max, cpage, page24;
261 int y, y_start, dd, ds;
263 uint32_t *cptr, *s24;
265 if (ts->ds->depth != 32)
267 page = ts->vram_offset;
268 page24 = ts->vram24_offset;
269 cpage = ts->cplane_offset;
271 page_min = 0xffffffff;
277 dd = ts->ds->linesize;
280 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
281 page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
282 if (check_dirty(ts, page, page24, cpage)) {
289 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
294 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
299 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
304 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
311 /* flush to display */
312 dpy_update(ts->ds, 0, y_start,
313 ts->width, y - y_start);
323 /* flush to display */
324 dpy_update(ts->ds, 0, y_start,
325 ts->width, y - y_start);
327 /* reset modified pages */
328 if (page_min <= page_max) {
329 reset_dirty(ts, page_min, page_max, page24, cpage);
333 static void tcx_invalidate_display(void *opaque)
335 TCXState *s = opaque;
338 for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
339 cpu_physical_memory_set_dirty(s->vram_offset + i);
343 static void tcx24_invalidate_display(void *opaque)
345 TCXState *s = opaque;
348 tcx_invalidate_display(s);
349 for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) {
350 cpu_physical_memory_set_dirty(s->vram24_offset + i);
351 cpu_physical_memory_set_dirty(s->cplane_offset + i);
355 static void tcx_save(QEMUFile *f, void *opaque)
357 TCXState *s = opaque;
359 qemu_put_be32s(f, (uint32_t *)&s->addr);
360 qemu_put_be32s(f, (uint32_t *)&s->vram);
361 qemu_put_be32s(f, (uint32_t *)&s->vram24);
362 qemu_put_be32s(f, (uint32_t *)&s->cplane);
363 qemu_put_be16s(f, (uint16_t *)&s->height);
364 qemu_put_be16s(f, (uint16_t *)&s->width);
365 qemu_put_be16s(f, (uint16_t *)&s->depth);
366 qemu_put_buffer(f, s->r, 256);
367 qemu_put_buffer(f, s->g, 256);
368 qemu_put_buffer(f, s->b, 256);
369 qemu_put_8s(f, &s->dac_index);
370 qemu_put_8s(f, &s->dac_state);
373 static int tcx_load(QEMUFile *f, void *opaque, int version_id)
375 TCXState *s = opaque;
380 qemu_get_be32s(f, (uint32_t *)&s->addr);
381 qemu_get_be32s(f, (uint32_t *)&s->vram);
382 qemu_get_be32s(f, (uint32_t *)&s->vram24);
383 qemu_get_be32s(f, (uint32_t *)&s->cplane);
384 qemu_get_be16s(f, (uint16_t *)&s->height);
385 qemu_get_be16s(f, (uint16_t *)&s->width);
386 qemu_get_be16s(f, (uint16_t *)&s->depth);
387 qemu_get_buffer(f, s->r, 256);
388 qemu_get_buffer(f, s->g, 256);
389 qemu_get_buffer(f, s->b, 256);
390 qemu_get_8s(f, &s->dac_index);
391 qemu_get_8s(f, &s->dac_state);
392 update_palette_entries(s, 0, 256);
393 tcx_invalidate_display(s);
398 static void tcx_reset(void *opaque)
400 TCXState *s = opaque;
402 /* Initialize palette */
403 memset(s->r, 0, 256);
404 memset(s->g, 0, 256);
405 memset(s->b, 0, 256);
406 s->r[255] = s->g[255] = s->b[255] = 255;
407 update_palette_entries(s, 0, 256);
408 memset(s->vram, 0, MAXX*MAXY);
409 cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
410 MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG);
415 static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
420 static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
422 TCXState *s = opaque;
425 saddr = (addr & (TCX_DAC_NREGS - 1)) >> 2;
428 s->dac_index = val >> 24;
432 switch (s->dac_state) {
434 s->r[s->dac_index] = val >> 24;
435 update_palette_entries(s, s->dac_index, s->dac_index + 1);
439 s->g[s->dac_index] = val >> 24;
440 update_palette_entries(s, s->dac_index, s->dac_index + 1);
444 s->b[s->dac_index] = val >> 24;
445 update_palette_entries(s, s->dac_index, s->dac_index + 1);
446 s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
458 static CPUReadMemoryFunc *tcx_dac_read[3] = {
464 static CPUWriteMemoryFunc *tcx_dac_write[3] = {
470 void tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
471 unsigned long vram_offset, int vram_size, int width, int height,
478 s = qemu_mallocz(sizeof(TCXState));
483 s->vram_offset = vram_offset;
491 cpu_register_physical_memory(addr + 0x00800000, size, vram_offset);
495 io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
496 cpu_register_physical_memory(addr + 0x00200000, TCX_DAC_NREGS, io_memory);
500 size = vram_size * 4;
501 s->vram24 = (uint32_t *)vram_base;
502 s->vram24_offset = vram_offset;
503 cpu_register_physical_memory(addr + 0x02000000, size, vram_offset);
508 size = vram_size * 4;
509 s->cplane = (uint32_t *)vram_base;
510 s->cplane_offset = vram_offset;
511 cpu_register_physical_memory(addr + 0x0a000000, size, vram_offset);
512 graphic_console_init(s->ds, tcx24_update_display, tcx24_invalidate_display,
513 tcx24_screen_dump, s);
515 graphic_console_init(s->ds, tcx_update_display, tcx_invalidate_display,
519 register_savevm("tcx", addr, 1, tcx_save, tcx_load, s);
520 qemu_register_reset(tcx_reset, s);
522 dpy_resize(s->ds, width, height);
525 static void tcx_screen_dump(void *opaque, const char *filename)
527 TCXState *s = opaque;
532 f = fopen(filename, "wb");
535 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
537 for(y = 0; y < s->height; y++) {
539 for(x = 0; x < s->width; x++) {
552 static void tcx24_screen_dump(void *opaque, const char *filename)
554 TCXState *s = opaque;
557 uint32_t *s24, *cptr, dval;
560 f = fopen(filename, "wb");
563 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
567 for(y = 0; y < s->height; y++) {
569 for(x = 0; x < s->width; x++, d++, s24++) {
570 if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
571 dval = *s24 & 0x00ffffff;
572 fputc((dval >> 16) & 0xff, f);
573 fputc((dval >> 8) & 0xff, f);
574 fputc(dval & 0xff, f);