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;
40 uint32_t *vram24, *cplane;
41 ram_addr_t vram_offset, vram24_offset, cplane_offset;
42 uint16_t width, height, depth;
43 uint8_t r[256], g[256], b[256];
44 uint32_t palette[256];
45 uint8_t dac_index, dac_state;
48 static void tcx_screen_dump(void *opaque, const char *filename);
49 static void tcx24_screen_dump(void *opaque, const char *filename);
50 static void tcx_invalidate_display(void *opaque);
51 static void tcx24_invalidate_display(void *opaque);
53 static void update_palette_entries(TCXState *s, int start, int end)
56 for(i = start; i < end; i++) {
57 switch(ds_get_bits_per_pixel(s->ds)) {
60 s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
63 s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
66 s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
69 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
74 tcx24_invalidate_display(s);
76 tcx_invalidate_display(s);
79 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
80 const uint8_t *s, int width)
84 uint32_t *p = (uint32_t *)d;
86 for(x = 0; x < width; x++) {
88 *p++ = s1->palette[val];
92 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
93 const uint8_t *s, int width)
97 uint16_t *p = (uint16_t *)d;
99 for(x = 0; x < width; x++) {
101 *p++ = s1->palette[val];
105 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
106 const uint8_t *s, int width)
111 for(x = 0; x < width; x++) {
113 *d++ = s1->palette[val];
118 XXX Could be much more optimal:
119 * detect if line/page/whole screen is in 24 bit mode
120 * if destination is also BGR, use memcpy
122 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
123 const uint8_t *s, int width,
124 const uint32_t *cplane,
129 uint32_t *p = (uint32_t *)d;
132 for(x = 0; x < width; x++, s++, s24++) {
133 if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
134 // 24-bit direct, BGR order
140 dval = rgb_to_pixel32(r, g, b);
143 dval = s1->palette[val];
149 static inline int check_dirty(ram_addr_t page, ram_addr_t page24,
155 ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
156 for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
157 ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
158 ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
163 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
164 ram_addr_t page_max, ram_addr_t page24,
167 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
169 page_min -= ts->vram_offset;
170 page_max -= ts->vram_offset;
171 cpu_physical_memory_reset_dirty(page24 + page_min * 4,
172 page24 + page_max * 4 + TARGET_PAGE_SIZE,
174 cpu_physical_memory_reset_dirty(cpage + page_min * 4,
175 cpage + page_max * 4 + TARGET_PAGE_SIZE,
179 /* Fixed line length 1024 allows us to do nice tricks not possible on
181 static void tcx_update_display(void *opaque)
183 TCXState *ts = opaque;
184 ram_addr_t page, page_min, page_max;
185 int y, y_start, dd, ds;
187 void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
189 if (ds_get_bits_per_pixel(ts->ds) == 0)
191 page = ts->vram_offset;
193 page_min = 0xffffffff;
195 d = ds_get_data(ts->ds);
197 dd = ds_get_linesize(ts->ds);
200 switch (ds_get_bits_per_pixel(ts->ds)) {
216 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
217 if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
224 f(ts, d, s, ts->width);
227 f(ts, d, s, ts->width);
230 f(ts, d, s, ts->width);
233 f(ts, d, s, ts->width);
238 /* flush to display */
239 dpy_update(ts->ds, 0, y_start,
240 ts->width, y - y_start);
248 /* flush to display */
249 dpy_update(ts->ds, 0, y_start,
250 ts->width, y - y_start);
252 /* reset modified pages */
253 if (page_min <= page_max) {
254 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
259 static void tcx24_update_display(void *opaque)
261 TCXState *ts = opaque;
262 ram_addr_t page, page_min, page_max, cpage, page24;
263 int y, y_start, dd, ds;
265 uint32_t *cptr, *s24;
267 if (ds_get_bits_per_pixel(ts->ds) != 32)
269 page = ts->vram_offset;
270 page24 = ts->vram24_offset;
271 cpage = ts->cplane_offset;
273 page_min = 0xffffffff;
275 d = ds_get_data(ts->ds);
279 dd = ds_get_linesize(ts->ds);
282 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
283 page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
284 if (check_dirty(page, page24, cpage)) {
291 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
296 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
301 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
306 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
313 /* flush to display */
314 dpy_update(ts->ds, 0, y_start,
315 ts->width, y - y_start);
325 /* flush to display */
326 dpy_update(ts->ds, 0, y_start,
327 ts->width, y - y_start);
329 /* reset modified pages */
330 if (page_min <= page_max) {
331 reset_dirty(ts, page_min, page_max, page24, cpage);
335 static void tcx_invalidate_display(void *opaque)
337 TCXState *s = opaque;
340 for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
341 cpu_physical_memory_set_dirty(s->vram_offset + i);
345 static void tcx24_invalidate_display(void *opaque)
347 TCXState *s = opaque;
350 tcx_invalidate_display(s);
351 for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) {
352 cpu_physical_memory_set_dirty(s->vram24_offset + i);
353 cpu_physical_memory_set_dirty(s->cplane_offset + i);
357 static void tcx_save(QEMUFile *f, void *opaque)
359 TCXState *s = opaque;
361 qemu_put_be16s(f, &s->height);
362 qemu_put_be16s(f, &s->width);
363 qemu_put_be16s(f, &s->depth);
364 qemu_put_buffer(f, s->r, 256);
365 qemu_put_buffer(f, s->g, 256);
366 qemu_put_buffer(f, s->b, 256);
367 qemu_put_8s(f, &s->dac_index);
368 qemu_put_8s(f, &s->dac_state);
371 static int tcx_load(QEMUFile *f, void *opaque, int version_id)
373 TCXState *s = opaque;
376 if (version_id != 3 && version_id != 4)
379 if (version_id == 3) {
380 qemu_get_be32s(f, &dummy);
381 qemu_get_be32s(f, &dummy);
382 qemu_get_be32s(f, &dummy);
384 qemu_get_be16s(f, &s->height);
385 qemu_get_be16s(f, &s->width);
386 qemu_get_be16s(f, &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);
394 tcx24_invalidate_display(s);
396 tcx_invalidate_display(s);
401 static void tcx_reset(void *opaque)
403 TCXState *s = opaque;
405 /* Initialize palette */
406 memset(s->r, 0, 256);
407 memset(s->g, 0, 256);
408 memset(s->b, 0, 256);
409 s->r[255] = s->g[255] = s->b[255] = 255;
410 update_palette_entries(s, 0, 256);
411 memset(s->vram, 0, MAXX*MAXY);
412 cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
413 MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG);
418 static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
423 static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
425 TCXState *s = opaque;
429 s->dac_index = val >> 24;
433 switch (s->dac_state) {
435 s->r[s->dac_index] = val >> 24;
436 update_palette_entries(s, s->dac_index, s->dac_index + 1);
440 s->g[s->dac_index] = val >> 24;
441 update_palette_entries(s, s->dac_index, s->dac_index + 1);
445 s->b[s->dac_index] = val >> 24;
446 update_palette_entries(s, s->dac_index, s->dac_index + 1);
447 s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
459 static CPUReadMemoryFunc *tcx_dac_read[3] = {
465 static CPUWriteMemoryFunc *tcx_dac_write[3] = {
471 static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
476 static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
481 static CPUReadMemoryFunc *tcx_dummy_read[3] = {
487 static CPUWriteMemoryFunc *tcx_dummy_write[3] = {
493 void tcx_init(target_phys_addr_t addr, uint8_t *vram_base,
494 unsigned long vram_offset, int vram_size, int width, int height,
498 int io_memory, dummy_memory;
501 s = qemu_mallocz(sizeof(TCXState));
503 s->vram_offset = vram_offset;
511 cpu_register_physical_memory(addr + 0x00800000ULL, size, vram_offset);
515 io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
516 cpu_register_physical_memory(addr + 0x00200000ULL, TCX_DAC_NREGS,
519 dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write,
521 cpu_register_physical_memory(addr + 0x00700000ULL, TCX_TEC_NREGS,
525 size = vram_size * 4;
526 s->vram24 = (uint32_t *)vram_base;
527 s->vram24_offset = vram_offset;
528 cpu_register_physical_memory(addr + 0x02000000ULL, size, vram_offset);
533 size = vram_size * 4;
534 s->cplane = (uint32_t *)vram_base;
535 s->cplane_offset = vram_offset;
536 cpu_register_physical_memory(addr + 0x0a000000ULL, size, vram_offset);
537 s->ds = graphic_console_init(tcx24_update_display,
538 tcx24_invalidate_display,
539 tcx24_screen_dump, NULL, s);
541 cpu_register_physical_memory(addr + 0x00300000ULL, TCX_THC_NREGS_8,
543 s->ds = graphic_console_init(tcx_update_display,
544 tcx_invalidate_display,
545 tcx_screen_dump, NULL, s);
547 // NetBSD writes here even with 8-bit display
548 cpu_register_physical_memory(addr + 0x00301000ULL, TCX_THC_NREGS_24,
551 register_savevm("tcx", addr, 4, tcx_save, tcx_load, s);
552 qemu_register_reset(tcx_reset, s);
554 qemu_console_resize(s->ds, width, height);
557 static void tcx_screen_dump(void *opaque, const char *filename)
559 TCXState *s = opaque;
564 f = fopen(filename, "wb");
567 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
569 for(y = 0; y < s->height; y++) {
571 for(x = 0; x < s->width; x++) {
584 static void tcx24_screen_dump(void *opaque, const char *filename)
586 TCXState *s = opaque;
589 uint32_t *s24, *cptr, dval;
592 f = fopen(filename, "wb");
595 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
599 for(y = 0; y < s->height; y++) {
601 for(x = 0; x < s->width; x++, d++, s24++) {
602 if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
603 dval = *s24 & 0x00ffffff;
604 fputc((dval >> 16) & 0xff, f);
605 fputc((dval >> 8) & 0xff, f);
606 fputc(dval & 0xff, f);