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
26 #include "pixel_ops.h"
28 #include "qdev-addr.h"
32 #define TCX_DAC_NREGS 16
33 #define TCX_THC_NREGS_8 0x081c
34 #define TCX_THC_NREGS_24 0x1000
35 #define TCX_TEC_NREGS 0x1000
37 typedef struct TCXState {
39 target_phys_addr_t addr;
42 uint32_t *vram24, *cplane;
43 MemoryRegion vram_mem;
44 MemoryRegion vram_8bit;
45 MemoryRegion vram_24bit;
46 MemoryRegion vram_cplane;
51 ram_addr_t vram24_offset, cplane_offset;
53 uint32_t palette[256];
54 uint8_t r[256], g[256], b[256];
55 uint16_t width, height, depth;
56 uint8_t dac_index, dac_state;
59 static void tcx_screen_dump(void *opaque, const char *filename);
60 static void tcx24_screen_dump(void *opaque, const char *filename);
62 static void tcx_set_dirty(TCXState *s)
64 memory_region_set_dirty(&s->vram_mem, 0, MAXX * MAXY);
67 static void tcx24_set_dirty(TCXState *s)
69 memory_region_set_dirty(&s->vram_mem, s->vram24_offset, MAXX * MAXY * 4);
70 memory_region_set_dirty(&s->vram_mem, s->cplane_offset, MAXX * MAXY * 4);
73 static void update_palette_entries(TCXState *s, int start, int end)
76 for(i = start; i < end; i++) {
77 switch(ds_get_bits_per_pixel(s->ds)) {
80 s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
83 s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
86 s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
89 if (is_surface_bgr(s->ds->surface))
90 s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]);
92 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
103 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
104 const uint8_t *s, int width)
108 uint32_t *p = (uint32_t *)d;
110 for(x = 0; x < width; x++) {
112 *p++ = s1->palette[val];
116 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
117 const uint8_t *s, int width)
121 uint16_t *p = (uint16_t *)d;
123 for(x = 0; x < width; x++) {
125 *p++ = s1->palette[val];
129 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
130 const uint8_t *s, int width)
135 for(x = 0; x < width; x++) {
137 *d++ = s1->palette[val];
142 XXX Could be much more optimal:
143 * detect if line/page/whole screen is in 24 bit mode
144 * if destination is also BGR, use memcpy
146 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
147 const uint8_t *s, int width,
148 const uint32_t *cplane,
153 uint32_t *p = (uint32_t *)d;
156 bgr = is_surface_bgr(s1->ds->surface);
157 for(x = 0; x < width; x++, s++, s24++) {
158 if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
159 // 24-bit direct, BGR order
166 dval = rgb_to_pixel32bgr(r, g, b);
168 dval = rgb_to_pixel32(r, g, b);
171 dval = s1->palette[val];
177 static inline int check_dirty(TCXState *s, ram_addr_t page, ram_addr_t page24,
183 ret = memory_region_get_dirty(&s->vram_mem, page, DIRTY_MEMORY_VGA);
184 for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
185 ret |= memory_region_get_dirty(&s->vram_mem, page24 + off,
187 ret |= memory_region_get_dirty(&s->vram_mem, cpage + off,
193 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
194 ram_addr_t page_max, ram_addr_t page24,
197 memory_region_reset_dirty(&ts->vram_mem,
198 page_min, page_max + TARGET_PAGE_SIZE,
200 memory_region_reset_dirty(&ts->vram_mem,
201 page24 + page_min * 4,
202 page24 + page_max * 4 + TARGET_PAGE_SIZE,
204 memory_region_reset_dirty(&ts->vram_mem,
205 cpage + page_min * 4,
206 cpage + page_max * 4 + TARGET_PAGE_SIZE,
210 /* Fixed line length 1024 allows us to do nice tricks not possible on
212 static void tcx_update_display(void *opaque)
214 TCXState *ts = opaque;
215 ram_addr_t page, page_min, page_max;
216 int y, y_start, dd, ds;
218 void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
220 if (ds_get_bits_per_pixel(ts->ds) == 0)
226 d = ds_get_data(ts->ds);
228 dd = ds_get_linesize(ts->ds);
231 switch (ds_get_bits_per_pixel(ts->ds)) {
247 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
248 if (memory_region_get_dirty(&ts->vram_mem, page, DIRTY_MEMORY_VGA)) {
255 f(ts, d, s, ts->width);
258 f(ts, d, s, ts->width);
261 f(ts, d, s, ts->width);
264 f(ts, d, s, ts->width);
269 /* flush to display */
270 dpy_update(ts->ds, 0, y_start,
271 ts->width, y - y_start);
279 /* flush to display */
280 dpy_update(ts->ds, 0, y_start,
281 ts->width, y - y_start);
283 /* reset modified pages */
284 if (page_max >= page_min) {
285 memory_region_reset_dirty(&ts->vram_mem,
286 page_min, page_max + TARGET_PAGE_SIZE,
291 static void tcx24_update_display(void *opaque)
293 TCXState *ts = opaque;
294 ram_addr_t page, page_min, page_max, cpage, page24;
295 int y, y_start, dd, ds;
297 uint32_t *cptr, *s24;
299 if (ds_get_bits_per_pixel(ts->ds) != 32)
302 page24 = ts->vram24_offset;
303 cpage = ts->cplane_offset;
307 d = ds_get_data(ts->ds);
311 dd = ds_get_linesize(ts->ds);
314 for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
315 page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
316 if (check_dirty(ts, page, page24, cpage)) {
323 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
328 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
333 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
338 tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
345 /* flush to display */
346 dpy_update(ts->ds, 0, y_start,
347 ts->width, y - y_start);
357 /* flush to display */
358 dpy_update(ts->ds, 0, y_start,
359 ts->width, y - y_start);
361 /* reset modified pages */
362 if (page_max >= page_min) {
363 reset_dirty(ts, page_min, page_max, page24, cpage);
367 static void tcx_invalidate_display(void *opaque)
369 TCXState *s = opaque;
372 qemu_console_resize(s->ds, s->width, s->height);
375 static void tcx24_invalidate_display(void *opaque)
377 TCXState *s = opaque;
381 qemu_console_resize(s->ds, s->width, s->height);
384 static int vmstate_tcx_post_load(void *opaque, int version_id)
386 TCXState *s = opaque;
388 update_palette_entries(s, 0, 256);
389 if (s->depth == 24) {
398 static const VMStateDescription vmstate_tcx = {
401 .minimum_version_id = 4,
402 .minimum_version_id_old = 4,
403 .post_load = vmstate_tcx_post_load,
404 .fields = (VMStateField []) {
405 VMSTATE_UINT16(height, TCXState),
406 VMSTATE_UINT16(width, TCXState),
407 VMSTATE_UINT16(depth, TCXState),
408 VMSTATE_BUFFER(r, TCXState),
409 VMSTATE_BUFFER(g, TCXState),
410 VMSTATE_BUFFER(b, TCXState),
411 VMSTATE_UINT8(dac_index, TCXState),
412 VMSTATE_UINT8(dac_state, TCXState),
413 VMSTATE_END_OF_LIST()
417 static void tcx_reset(DeviceState *d)
419 TCXState *s = container_of(d, TCXState, busdev.qdev);
421 /* Initialize palette */
422 memset(s->r, 0, 256);
423 memset(s->g, 0, 256);
424 memset(s->b, 0, 256);
425 s->r[255] = s->g[255] = s->b[255] = 255;
426 update_palette_entries(s, 0, 256);
427 memset(s->vram, 0, MAXX*MAXY);
428 memory_region_reset_dirty(&s->vram_mem, 0, MAXX * MAXY * (1 + 4 + 4),
434 static uint64_t tcx_dac_readl(void *opaque, target_phys_addr_t addr,
440 static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint64_t val,
443 TCXState *s = opaque;
447 s->dac_index = val >> 24;
451 switch (s->dac_state) {
453 s->r[s->dac_index] = val >> 24;
454 update_palette_entries(s, s->dac_index, s->dac_index + 1);
458 s->g[s->dac_index] = val >> 24;
459 update_palette_entries(s, s->dac_index, s->dac_index + 1);
463 s->b[s->dac_index] = val >> 24;
464 update_palette_entries(s, s->dac_index, s->dac_index + 1);
465 s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
477 static const MemoryRegionOps tcx_dac_ops = {
478 .read = tcx_dac_readl,
479 .write = tcx_dac_writel,
480 .endianness = DEVICE_NATIVE_ENDIAN,
482 .min_access_size = 4,
483 .max_access_size = 4,
487 static uint64_t dummy_readl(void *opaque, target_phys_addr_t addr,
493 static void dummy_writel(void *opaque, target_phys_addr_t addr,
494 uint64_t val, unsigned size)
498 static const MemoryRegionOps dummy_ops = {
500 .write = dummy_writel,
501 .endianness = DEVICE_NATIVE_ENDIAN,
503 .min_access_size = 4,
504 .max_access_size = 4,
508 static int tcx_init1(SysBusDevice *dev)
510 TCXState *s = FROM_SYSBUS(TCXState, dev);
511 ram_addr_t vram_offset = 0;
515 memory_region_init_ram(&s->vram_mem, "tcx.vram",
516 s->vram_size * (1 + 4 + 4));
517 vmstate_register_ram_global(&s->vram_mem);
518 vram_base = memory_region_get_ram_ptr(&s->vram_mem);
523 memory_region_init_alias(&s->vram_8bit, "tcx.vram.8bit",
524 &s->vram_mem, vram_offset, size);
525 sysbus_init_mmio(dev, &s->vram_8bit);
530 memory_region_init_io(&s->dac, &tcx_dac_ops, s, "tcx.dac", TCX_DAC_NREGS);
531 sysbus_init_mmio(dev, &s->dac);
534 memory_region_init_io(&s->tec, &dummy_ops, s, "tcx.tec", TCX_TEC_NREGS);
535 sysbus_init_mmio(dev, &s->tec);
536 /* THC: NetBSD writes here even with 8-bit display: dummy */
537 memory_region_init_io(&s->thc24, &dummy_ops, s, "tcx.thc24",
539 sysbus_init_mmio(dev, &s->thc24);
541 if (s->depth == 24) {
543 size = s->vram_size * 4;
544 s->vram24 = (uint32_t *)vram_base;
545 s->vram24_offset = vram_offset;
546 memory_region_init_alias(&s->vram_24bit, "tcx.vram.24bit",
547 &s->vram_mem, vram_offset, size);
548 sysbus_init_mmio(dev, &s->vram_24bit);
553 size = s->vram_size * 4;
554 s->cplane = (uint32_t *)vram_base;
555 s->cplane_offset = vram_offset;
556 memory_region_init_alias(&s->vram_cplane, "tcx.vram.cplane",
557 &s->vram_mem, vram_offset, size);
558 sysbus_init_mmio(dev, &s->vram_cplane);
560 s->ds = graphic_console_init(tcx24_update_display,
561 tcx24_invalidate_display,
562 tcx24_screen_dump, NULL, s);
564 /* THC 8 bit (dummy) */
565 memory_region_init_io(&s->thc8, &dummy_ops, s, "tcx.thc8",
567 sysbus_init_mmio(dev, &s->thc8);
569 s->ds = graphic_console_init(tcx_update_display,
570 tcx_invalidate_display,
571 tcx_screen_dump, NULL, s);
574 qemu_console_resize(s->ds, s->width, s->height);
578 static void tcx_screen_dump(void *opaque, const char *filename)
580 TCXState *s = opaque;
585 f = fopen(filename, "wb");
588 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
590 for(y = 0; y < s->height; y++) {
592 for(x = 0; x < s->width; x++) {
605 static void tcx24_screen_dump(void *opaque, const char *filename)
607 TCXState *s = opaque;
610 uint32_t *s24, *cptr, dval;
613 f = fopen(filename, "wb");
616 fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
620 for(y = 0; y < s->height; y++) {
622 for(x = 0; x < s->width; x++, d++, s24++) {
623 if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
624 dval = *s24 & 0x00ffffff;
625 fputc((dval >> 16) & 0xff, f);
626 fputc((dval >> 8) & 0xff, f);
627 fputc(dval & 0xff, f);
641 static SysBusDeviceInfo tcx_info = {
643 .qdev.name = "SUNW,tcx",
644 .qdev.size = sizeof(TCXState),
645 .qdev.reset = tcx_reset,
646 .qdev.vmsd = &vmstate_tcx,
647 .qdev.props = (Property[]) {
648 DEFINE_PROP_TADDR("addr", TCXState, addr, -1),
649 DEFINE_PROP_HEX32("vram_size", TCXState, vram_size, -1),
650 DEFINE_PROP_UINT16("width", TCXState, width, -1),
651 DEFINE_PROP_UINT16("height", TCXState, height, -1),
652 DEFINE_PROP_UINT16("depth", TCXState, depth, -1),
653 DEFINE_PROP_END_OF_LIST(),
657 static void tcx_register_devices(void)
659 sysbus_register_withprop(&tcx_info);
662 device_init(tcx_register_devices)