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(s->ds->depth) {
61 s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
65 s->palette[i] = rgb_to_pixel15bgr(s->r[i], s->g[i], s->b[i]);
67 s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
71 s->palette[i] = rgb_to_pixel16bgr(s->r[i], s->g[i], s->b[i]);
73 s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
77 s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]);
79 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
84 tcx24_invalidate_display(s);
86 tcx_invalidate_display(s);
89 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
90 const uint8_t *s, int width)
94 uint32_t *p = (uint32_t *)d;
96 for(x = 0; x < width; x++) {
98 *p++ = s1->palette[val];
102 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
103 const uint8_t *s, int width)
107 uint16_t *p = (uint16_t *)d;
109 for(x = 0; x < width; x++) {
111 *p++ = s1->palette[val];
115 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
116 const uint8_t *s, int width)
121 for(x = 0; x < width; x++) {
123 *d++ = s1->palette[val];
128 XXX Could be much more optimal:
129 * detect if line/page/whole screen is in 24 bit mode
130 * if destination is also BGR, use memcpy
132 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
133 const uint8_t *s, int width,
134 const uint32_t *cplane,
139 uint32_t *p = (uint32_t *)d;
143 for(x = 0; x < width; x++, s++, s24++) {
144 if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
145 // 24-bit direct, BGR order
152 dval = rgb_to_pixel32bgr(r, g, b);
154 dval = rgb_to_pixel32(r, g, b);
157 dval = s1->palette[val];
163 static inline int check_dirty(ram_addr_t page, ram_addr_t page24,
169 ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
170 for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
171 ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
172 ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
177 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
178 ram_addr_t page_max, ram_addr_t page24,
181 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
183 page_min -= ts->vram_offset;
184 page_max -= ts->vram_offset;
185 cpu_physical_memory_reset_dirty(page24 + page_min * 4,
186 page24 + page_max * 4 + TARGET_PAGE_SIZE,
188 cpu_physical_memory_reset_dirty(cpage + page_min * 4,
189 cpage + page_max * 4 + TARGET_PAGE_SIZE,
193 /* Fixed line length 1024 allows us to do nice tricks not possible on
195 static void tcx_update_display(void *opaque)
197 TCXState *ts = opaque;
198 ram_addr_t page, page_min, page_max;
199 int y, y_start, dd, ds;
201 void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
203 if (ts->ds->depth == 0)
205 page = ts->vram_offset;
207 page_min = 0xffffffff;
211 dd = ts->ds->linesize;
214 switch (ts->ds->depth) {
230 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
231 if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
238 f(ts, d, s, ts->width);
241 f(ts, d, s, ts->width);
244 f(ts, d, s, ts->width);
247 f(ts, d, s, ts->width);
252 /* flush to display */
253 dpy_update(ts->ds, 0, y_start,
254 ts->width, y - y_start);
262 /* flush to display */
263 dpy_update(ts->ds, 0, y_start,
264 ts->width, y - y_start);
266 /* reset modified pages */
267 if (page_min <= page_max) {
268 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
273 static void tcx24_update_display(void *opaque)
275 TCXState *ts = opaque;
276 ram_addr_t page, page_min, page_max, cpage, page24;
277 int y, y_start, dd, ds;
279 uint32_t *cptr, *s24;
281 if (ts->ds->depth != 32)
283 page = ts->vram_offset;
284 page24 = ts->vram24_offset;
285 cpage = ts->cplane_offset;
287 page_min = 0xffffffff;
293 dd = ts->ds->linesize;
296 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
297 page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
298 if (check_dirty(page, page24, cpage)) {
305 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
310 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
315 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
320 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
327 /* flush to display */
328 dpy_update(ts->ds, 0, y_start,
329 ts->width, y - y_start);
339 /* flush to display */
340 dpy_update(ts->ds, 0, y_start,
341 ts->width, y - y_start);
343 /* reset modified pages */
344 if (page_min <= page_max) {
345 reset_dirty(ts, page_min, page_max, page24, cpage);
349 static void tcx_invalidate_display(void *opaque)
351 TCXState *s = opaque;
354 for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
355 cpu_physical_memory_set_dirty(s->vram_offset + i);
359 static void tcx24_invalidate_display(void *opaque)
361 TCXState *s = opaque;
364 tcx_invalidate_display(s);
365 for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) {
366 cpu_physical_memory_set_dirty(s->vram24_offset + i);
367 cpu_physical_memory_set_dirty(s->cplane_offset + i);
371 static void tcx_save(QEMUFile *f, void *opaque)
373 TCXState *s = opaque;
375 qemu_put_be16s(f, &s->height);
376 qemu_put_be16s(f, &s->width);
377 qemu_put_be16s(f, &s->depth);
378 qemu_put_buffer(f, s->r, 256);
379 qemu_put_buffer(f, s->g, 256);
380 qemu_put_buffer(f, s->b, 256);
381 qemu_put_8s(f, &s->dac_index);
382 qemu_put_8s(f, &s->dac_state);
385 static int tcx_load(QEMUFile *f, void *opaque, int version_id)
387 TCXState *s = opaque;
390 if (version_id != 3 && version_id != 4)
393 if (version_id == 3) {
394 qemu_get_be32s(f, &dummy);
395 qemu_get_be32s(f, &dummy);
396 qemu_get_be32s(f, &dummy);
398 qemu_get_be16s(f, &s->height);
399 qemu_get_be16s(f, &s->width);
400 qemu_get_be16s(f, &s->depth);
401 qemu_get_buffer(f, s->r, 256);
402 qemu_get_buffer(f, s->g, 256);
403 qemu_get_buffer(f, s->b, 256);
404 qemu_get_8s(f, &s->dac_index);
405 qemu_get_8s(f, &s->dac_state);
406 update_palette_entries(s, 0, 256);
408 tcx24_invalidate_display(s);
410 tcx_invalidate_display(s);
415 static void tcx_reset(void *opaque)
417 TCXState *s = opaque;
419 /* Initialize palette */
420 memset(s->r, 0, 256);
421 memset(s->g, 0, 256);
422 memset(s->b, 0, 256);
423 s->r[255] = s->g[255] = s->b[255] = 255;
424 update_palette_entries(s, 0, 256);
425 memset(s->vram, 0, MAXX*MAXY);
426 cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
427 MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG);
432 static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
437 static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
439 TCXState *s = opaque;
442 saddr = (addr & (TCX_DAC_NREGS - 1)) >> 2;
445 s->dac_index = val >> 24;
449 switch (s->dac_state) {
451 s->r[s->dac_index] = val >> 24;
452 update_palette_entries(s, s->dac_index, s->dac_index + 1);
456 s->g[s->dac_index] = val >> 24;
457 update_palette_entries(s, s->dac_index, s->dac_index + 1);
461 s->b[s->dac_index] = val >> 24;
462 update_palette_entries(s, s->dac_index, s->dac_index + 1);
463 s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
475 static CPUReadMemoryFunc *tcx_dac_read[3] = {
481 static CPUWriteMemoryFunc *tcx_dac_write[3] = {
487 static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
492 static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
497 static CPUReadMemoryFunc *tcx_dummy_read[3] = {
503 static CPUWriteMemoryFunc *tcx_dummy_write[3] = {
509 void tcx_init(DisplayState *ds, target_phys_addr_t addr, uint8_t *vram_base,
510 unsigned long vram_offset, int vram_size, int width, int height,
514 int io_memory, dummy_memory;
517 s = qemu_mallocz(sizeof(TCXState));
522 s->vram_offset = vram_offset;
530 cpu_register_physical_memory(addr + 0x00800000ULL, size, vram_offset);
534 io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
535 cpu_register_physical_memory(addr + 0x00200000ULL, TCX_DAC_NREGS,
538 dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write,
540 cpu_register_physical_memory(addr + 0x00700000ULL, TCX_TEC_NREGS,
544 size = vram_size * 4;
545 s->vram24 = (uint32_t *)vram_base;
546 s->vram24_offset = vram_offset;
547 cpu_register_physical_memory(addr + 0x02000000ULL, size, vram_offset);
552 size = vram_size * 4;
553 s->cplane = (uint32_t *)vram_base;
554 s->cplane_offset = vram_offset;
555 cpu_register_physical_memory(addr + 0x0a000000ULL, size, vram_offset);
556 s->console = graphic_console_init(s->ds, tcx24_update_display,
557 tcx24_invalidate_display,
558 tcx24_screen_dump, NULL, s);
560 cpu_register_physical_memory(addr + 0x00300000ULL, TCX_THC_NREGS_8,
562 s->console = graphic_console_init(s->ds, tcx_update_display,
563 tcx_invalidate_display,
564 tcx_screen_dump, NULL, s);
566 // NetBSD writes here even with 8-bit display
567 cpu_register_physical_memory(addr + 0x00301000ULL, TCX_THC_NREGS_24,
570 register_savevm("tcx", addr, 4, tcx_save, tcx_load, s);
571 qemu_register_reset(tcx_reset, s);
573 qemu_console_resize(s->console, width, height);
576 static void tcx_screen_dump(void *opaque, const char *filename)
578 TCXState *s = opaque;
583 f = fopen(filename, "wb");
586 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
588 for(y = 0; y < s->height; y++) {
590 for(x = 0; x < s->width; x++) {
603 static void tcx24_screen_dump(void *opaque, const char *filename)
605 TCXState *s = opaque;
608 uint32_t *s24, *cptr, dval;
611 f = fopen(filename, "wb");
614 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
618 for(y = 0; y < s->height; y++) {
620 for(x = 0; x < s->width; x++, d++, s24++) {
621 if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
622 dval = *s24 & 0x00ffffff;
623 fputc((dval >> 16) & 0xff, f);
624 fputc((dval >> 8) & 0xff, f);
625 fputc(dval & 0xff, f);