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
27 #include "pixel_ops.h"
31 #define TCX_DAC_NREGS 16
32 #define TCX_THC_NREGS_8 0x081c
33 #define TCX_THC_NREGS_24 0x1000
34 #define TCX_TEC_NREGS 0x1000
36 typedef struct TCXState {
37 target_phys_addr_t addr;
41 uint32_t *vram24, *cplane;
42 ram_addr_t vram_offset, vram24_offset, cplane_offset;
43 uint16_t width, height, depth;
44 uint8_t r[256], g[256], b[256];
45 uint32_t palette[256];
46 uint8_t dac_index, dac_state;
49 static void tcx_screen_dump(void *opaque, const char *filename);
50 static void tcx24_screen_dump(void *opaque, const char *filename);
51 static void tcx_invalidate_display(void *opaque);
52 static void tcx24_invalidate_display(void *opaque);
54 static void update_palette_entries(TCXState *s, int start, int end)
57 for(i = start; i < end; i++) {
58 switch(ds_get_bits_per_pixel(s->ds)) {
61 s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
64 s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
67 s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
70 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
75 tcx24_invalidate_display(s);
77 tcx_invalidate_display(s);
80 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
81 const uint8_t *s, int width)
85 uint32_t *p = (uint32_t *)d;
87 for(x = 0; x < width; x++) {
89 *p++ = s1->palette[val];
93 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
94 const uint8_t *s, int width)
98 uint16_t *p = (uint16_t *)d;
100 for(x = 0; x < width; x++) {
102 *p++ = s1->palette[val];
106 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
107 const uint8_t *s, int width)
112 for(x = 0; x < width; x++) {
114 *d++ = s1->palette[val];
119 XXX Could be much more optimal:
120 * detect if line/page/whole screen is in 24 bit mode
121 * if destination is also BGR, use memcpy
123 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
124 const uint8_t *s, int width,
125 const uint32_t *cplane,
130 uint32_t *p = (uint32_t *)d;
133 for(x = 0; x < width; x++, s++, s24++) {
134 if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
135 // 24-bit direct, BGR order
141 dval = rgb_to_pixel32(r, g, b);
144 dval = s1->palette[val];
150 static inline int check_dirty(ram_addr_t page, ram_addr_t page24,
156 ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
157 for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
158 ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
159 ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
164 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
165 ram_addr_t page_max, ram_addr_t page24,
168 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
170 page_min -= ts->vram_offset;
171 page_max -= ts->vram_offset;
172 cpu_physical_memory_reset_dirty(page24 + page_min * 4,
173 page24 + page_max * 4 + TARGET_PAGE_SIZE,
175 cpu_physical_memory_reset_dirty(cpage + page_min * 4,
176 cpage + page_max * 4 + TARGET_PAGE_SIZE,
180 /* Fixed line length 1024 allows us to do nice tricks not possible on
182 static void tcx_update_display(void *opaque)
184 TCXState *ts = opaque;
185 ram_addr_t page, page_min, page_max;
186 int y, y_start, dd, ds;
188 void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
190 if (ds_get_bits_per_pixel(ts->ds) == 0)
192 page = ts->vram_offset;
194 page_min = 0xffffffff;
196 d = ds_get_data(ts->ds);
198 dd = ds_get_linesize(ts->ds);
201 switch (ds_get_bits_per_pixel(ts->ds)) {
217 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
218 if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
225 f(ts, d, s, ts->width);
228 f(ts, d, s, ts->width);
231 f(ts, d, s, ts->width);
234 f(ts, d, s, ts->width);
239 /* flush to display */
240 dpy_update(ts->ds, 0, y_start,
241 ts->width, y - y_start);
249 /* flush to display */
250 dpy_update(ts->ds, 0, y_start,
251 ts->width, y - y_start);
253 /* reset modified pages */
254 if (page_min <= page_max) {
255 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
260 static void tcx24_update_display(void *opaque)
262 TCXState *ts = opaque;
263 ram_addr_t page, page_min, page_max, cpage, page24;
264 int y, y_start, dd, ds;
266 uint32_t *cptr, *s24;
268 if (ds_get_bits_per_pixel(ts->ds) != 32)
270 page = ts->vram_offset;
271 page24 = ts->vram24_offset;
272 cpage = ts->cplane_offset;
274 page_min = 0xffffffff;
276 d = ds_get_data(ts->ds);
280 dd = ds_get_linesize(ts->ds);
283 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
284 page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
285 if (check_dirty(page, page24, cpage)) {
292 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
297 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
302 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
307 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
314 /* flush to display */
315 dpy_update(ts->ds, 0, y_start,
316 ts->width, y - y_start);
326 /* flush to display */
327 dpy_update(ts->ds, 0, y_start,
328 ts->width, y - y_start);
330 /* reset modified pages */
331 if (page_min <= page_max) {
332 reset_dirty(ts, page_min, page_max, page24, cpage);
336 static void tcx_invalidate_display(void *opaque)
338 TCXState *s = opaque;
341 for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
342 cpu_physical_memory_set_dirty(s->vram_offset + i);
346 static void tcx24_invalidate_display(void *opaque)
348 TCXState *s = opaque;
351 tcx_invalidate_display(s);
352 for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) {
353 cpu_physical_memory_set_dirty(s->vram24_offset + i);
354 cpu_physical_memory_set_dirty(s->cplane_offset + i);
358 static void tcx_save(QEMUFile *f, void *opaque)
360 TCXState *s = opaque;
362 qemu_put_be16s(f, &s->height);
363 qemu_put_be16s(f, &s->width);
364 qemu_put_be16s(f, &s->depth);
365 qemu_put_buffer(f, s->r, 256);
366 qemu_put_buffer(f, s->g, 256);
367 qemu_put_buffer(f, s->b, 256);
368 qemu_put_8s(f, &s->dac_index);
369 qemu_put_8s(f, &s->dac_state);
372 static int tcx_load(QEMUFile *f, void *opaque, int version_id)
374 TCXState *s = opaque;
377 if (version_id != 3 && version_id != 4)
380 if (version_id == 3) {
381 qemu_get_be32s(f, &dummy);
382 qemu_get_be32s(f, &dummy);
383 qemu_get_be32s(f, &dummy);
385 qemu_get_be16s(f, &s->height);
386 qemu_get_be16s(f, &s->width);
387 qemu_get_be16s(f, &s->depth);
388 qemu_get_buffer(f, s->r, 256);
389 qemu_get_buffer(f, s->g, 256);
390 qemu_get_buffer(f, s->b, 256);
391 qemu_get_8s(f, &s->dac_index);
392 qemu_get_8s(f, &s->dac_state);
393 update_palette_entries(s, 0, 256);
395 tcx24_invalidate_display(s);
397 tcx_invalidate_display(s);
402 static void tcx_reset(void *opaque)
404 TCXState *s = opaque;
406 /* Initialize palette */
407 memset(s->r, 0, 256);
408 memset(s->g, 0, 256);
409 memset(s->b, 0, 256);
410 s->r[255] = s->g[255] = s->b[255] = 255;
411 update_palette_entries(s, 0, 256);
412 memset(s->vram, 0, MAXX*MAXY);
413 cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
414 MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG);
419 static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
424 static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
426 TCXState *s = opaque;
430 s->dac_index = val >> 24;
434 switch (s->dac_state) {
436 s->r[s->dac_index] = val >> 24;
437 update_palette_entries(s, s->dac_index, s->dac_index + 1);
441 s->g[s->dac_index] = val >> 24;
442 update_palette_entries(s, s->dac_index, s->dac_index + 1);
446 s->b[s->dac_index] = val >> 24;
447 update_palette_entries(s, s->dac_index, s->dac_index + 1);
448 s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
460 static CPUReadMemoryFunc *tcx_dac_read[3] = {
466 static CPUWriteMemoryFunc *tcx_dac_write[3] = {
472 static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
477 static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
482 static CPUReadMemoryFunc *tcx_dummy_read[3] = {
488 static CPUWriteMemoryFunc *tcx_dummy_write[3] = {
494 void tcx_init(DisplayState *ds, target_phys_addr_t addr, uint8_t *vram_base,
495 unsigned long vram_offset, int vram_size, int width, int height,
499 int io_memory, dummy_memory;
502 s = qemu_mallocz(sizeof(TCXState));
507 s->vram_offset = vram_offset;
515 cpu_register_physical_memory(addr + 0x00800000ULL, size, vram_offset);
519 io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
520 cpu_register_physical_memory(addr + 0x00200000ULL, TCX_DAC_NREGS,
523 dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write,
525 cpu_register_physical_memory(addr + 0x00700000ULL, TCX_TEC_NREGS,
529 size = vram_size * 4;
530 s->vram24 = (uint32_t *)vram_base;
531 s->vram24_offset = vram_offset;
532 cpu_register_physical_memory(addr + 0x02000000ULL, size, vram_offset);
537 size = vram_size * 4;
538 s->cplane = (uint32_t *)vram_base;
539 s->cplane_offset = vram_offset;
540 cpu_register_physical_memory(addr + 0x0a000000ULL, size, vram_offset);
541 s->console = graphic_console_init(s->ds, tcx24_update_display,
542 tcx24_invalidate_display,
543 tcx24_screen_dump, NULL, s);
545 cpu_register_physical_memory(addr + 0x00300000ULL, TCX_THC_NREGS_8,
547 s->console = graphic_console_init(s->ds, tcx_update_display,
548 tcx_invalidate_display,
549 tcx_screen_dump, NULL, s);
551 // NetBSD writes here even with 8-bit display
552 cpu_register_physical_memory(addr + 0x00301000ULL, TCX_THC_NREGS_24,
555 register_savevm("tcx", addr, 4, tcx_save, tcx_load, s);
556 qemu_register_reset(tcx_reset, s);
558 qemu_console_resize(s->console, width, height);
561 static void tcx_screen_dump(void *opaque, const char *filename)
563 TCXState *s = opaque;
568 f = fopen(filename, "wb");
571 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
573 for(y = 0; y < s->height; y++) {
575 for(x = 0; x < s->width; x++) {
588 static void tcx24_screen_dump(void *opaque, const char *filename)
590 TCXState *s = opaque;
593 uint32_t *s24, *cptr, dval;
596 f = fopen(filename, "wb");
599 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
603 for(y = 0; y < s->height; y++) {
605 for(x = 0; x < s->width; x++, d++, s24++) {
606 if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
607 dval = *s24 & 0x00ffffff;
608 fputc((dval >> 16) & 0xff, f);
609 fputc((dval >> 8) & 0xff, f);
610 fputc(dval & 0xff, f);