4 * Copyright (c) 2009 CodeSourcery
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 #include "framebuffer.h"
30 //#define DEBUG_SYBORG_FB
32 #ifdef DEBUG_SYBORG_FB
33 #define DPRINTF(fmt, ...) \
34 do { printf("syborg_fb: " fmt , ## __VA_ARGS__); } while (0)
35 #define BADF(fmt, ...) \
36 do { fprintf(stderr, "syborg_fb: error: " fmt , ## __VA_ARGS__); \
39 #define DPRINTF(fmt, ...) do {} while(0)
40 #define BADF(fmt, ...) \
41 do { fprintf(stderr, "syborg_fb: error: " fmt , ## __VA_ARGS__);} while (0)
52 FB_INTERRUPT_CAUSE = 7,
59 FB_PALETTE_START = 0x400 >> 2,
60 FB_PALETTE_END = FB_PALETTE_START+256-1,
63 #define FB_INT_VSYNC (1U << 0)
64 #define FB_INT_BASE_UPDATE_DONE (1U << 1)
69 /*QEMUConsole *console;*/
70 uint32_t need_update : 1;
71 uint32_t need_int : 1;
83 int rgb; /* 0 = BGR, 1 = RGB */
84 int endian; /* 0 = Little, 1 = Big */
85 uint32_t raw_palette[256];
86 uint32_t palette[256];
96 /* TODO: Implement these. */
101 #include "pixel_ops.h"
104 #include "pl110_template.h"
106 #include "pl110_template.h"
108 #include "pl110_template.h"
110 #include "pl110_template.h"
112 #include "pl110_template.h"
114 /* Update interrupts. */
115 static void syborg_fb_update(SyborgFBState *s)
117 if ((s->int_status & s->int_enable) != 0) {
118 DPRINTF("Raise IRQ\n");
119 qemu_irq_raise(s->irq);
121 DPRINTF("Lower IRQ\n");
122 qemu_irq_lower(s->irq);
126 static int syborg_fb_enabled(const SyborgFBState *s)
131 static void syborg_fb_update_palette(SyborgFBState *s)
135 unsigned int r, g, b;
138 case BPP_SRC_1: n = 2; break;
139 case BPP_SRC_2: n = 4; break;
140 case BPP_SRC_4: n = 16; break;
141 case BPP_SRC_8: n = 256; break;
145 for (i = 0; i < n; i++) {
146 raw = s->raw_palette[i];
147 r = (raw >> 16) & 0xff;
148 g = (raw >> 8) & 0xff;
150 switch (ds_get_bits_per_pixel(s->ds)) {
152 s->palette[i] = rgb_to_pixel8(r, g, b);
155 s->palette[i] = rgb_to_pixel15(r, g, b);
158 s->palette[i] = rgb_to_pixel16(r, g, b);
162 s->palette[i] = rgb_to_pixel32(r, g, b);
171 static void syborg_fb_update_display(void *opaque)
173 SyborgFBState *s = (SyborgFBState *)opaque;
182 if (!syborg_fb_enabled(s))
185 switch (ds_get_bits_per_pixel(s->ds)) {
189 fntable = pl110_draw_fn_8;
193 fntable = pl110_draw_fn_15;
197 fntable = pl110_draw_fn_16;
201 fntable = pl110_draw_fn_24;
205 fntable = pl110_draw_fn_32;
209 fprintf(stderr, "syborg_fb: Bad color depth\n");
214 s->int_status |= FB_INT_BASE_UPDATE_DONE;
228 fn = fntable[s->bpp + bpp_offset];
231 src_width = s->pitch;
258 dest_width *= s->cols;
260 /* TODO: Implement blanking. */
262 if (s->need_update && s->bpp <= BPP_SRC_8) {
263 syborg_fb_update_palette(s);
265 framebuffer_update_display(s->ds,
266 s->base, s->cols, s->rows,
267 src_width, dest_width, 0,
272 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
275 s->int_status |= FB_INT_VSYNC;
282 static void syborg_fb_invalidate_display(void * opaque)
284 SyborgFBState *s = (SyborgFBState *)opaque;
288 static uint32_t syborg_fb_read(void *opaque, target_phys_addr_t offset)
290 SyborgFBState *s = opaque;
292 DPRINTF("read reg %d\n", (int)offset);
294 switch (offset >> 2) {
296 return SYBORG_ID_FRAMEBUFFER;
314 return s->int_enable;
316 case FB_INTERRUPT_CAUSE:
317 return s->int_status;
321 case BPP_SRC_1: return 1;
322 case BPP_SRC_2: return 2;
323 case BPP_SRC_4: return 4;
324 case BPP_SRC_8: return 8;
325 case BPP_SRC_15: return 15;
326 case BPP_SRC_16: return 16;
327 case BPP_SRC_24: return 24;
328 case BPP_SRC_32: return 32;
348 if ((offset >> 2) >= FB_PALETTE_START
349 && (offset >> 2) <= FB_PALETTE_END) {
350 return s->raw_palette[(offset >> 2) - FB_PALETTE_START];
352 cpu_abort (cpu_single_env, "syborg_fb_read: Bad offset %x\n",
359 static void syborg_fb_write(void *opaque, target_phys_addr_t offset,
362 SyborgFBState *s = opaque;
364 DPRINTF("write reg %d = %d\n", (int)offset, val);
367 switch (offset >> 2) {
384 /* TODO: Implement rotation. */
396 case FB_INTERRUPT_CAUSE:
397 s->int_status &= ~val;
403 case 1: val = BPP_SRC_1; break;
404 case 2: val = BPP_SRC_2; break;
405 case 4: val = BPP_SRC_4; break;
406 case 8: val = BPP_SRC_8; break;
407 /* case 15: val = BPP_SRC_15; break; */
408 case 16: val = BPP_SRC_16; break;
409 /* case 24: val = BPP_SRC_24; break; */
410 case 32: val = BPP_SRC_32; break;
411 default: val = s->bpp; break;
421 s->endian = (val != 0);
425 /* TODO: Implement this. */
437 if ((offset >> 2) >= FB_PALETTE_START
438 && (offset >> 2) <= FB_PALETTE_END) {
439 s->raw_palette[(offset >> 2) - FB_PALETTE_START] = val;
441 cpu_abort (cpu_single_env, "syborg_fb_write: Bad offset %x\n",
448 static CPUReadMemoryFunc * const syborg_fb_readfn[] = {
454 static CPUWriteMemoryFunc * const syborg_fb_writefn[] = {
460 static void syborg_fb_save(QEMUFile *f, void *opaque)
462 SyborgFBState *s = opaque;
465 qemu_put_be32(f, s->need_int);
466 qemu_put_be32(f, s->int_status);
467 qemu_put_be32(f, s->int_enable);
468 qemu_put_be32(f, s->enabled);
469 qemu_put_be32(f, s->base);
470 qemu_put_be32(f, s->pitch);
471 qemu_put_be32(f, s->rows);
472 qemu_put_be32(f, s->cols);
473 qemu_put_be32(f, s->bpp);
474 qemu_put_be32(f, s->rgb);
475 for (i = 0; i < 256; i++) {
476 qemu_put_be32(f, s->raw_palette[i]);
480 static int syborg_fb_load(QEMUFile *f, void *opaque, int version_id)
482 SyborgFBState *s = opaque;
488 s->need_int = qemu_get_be32(f);
489 s->int_status = qemu_get_be32(f);
490 s->int_enable = qemu_get_be32(f);
491 s->enabled = qemu_get_be32(f);
492 s->base = qemu_get_be32(f);
493 s->pitch = qemu_get_be32(f);
494 s->rows = qemu_get_be32(f);
495 s->cols = qemu_get_be32(f);
496 s->bpp = qemu_get_be32(f);
497 s->rgb = qemu_get_be32(f);
498 for (i = 0; i < 256; i++) {
499 s->raw_palette[i] = qemu_get_be32(f);
506 static int syborg_fb_init(SysBusDevice *dev)
508 SyborgFBState *s = FROM_SYSBUS(SyborgFBState, dev);
511 sysbus_init_irq(dev, &s->irq);
512 iomemtype = cpu_register_io_memory(syborg_fb_readfn,
513 syborg_fb_writefn, s);
514 sysbus_init_mmio(dev, 0x1000, iomemtype);
516 s->ds = graphic_console_init(syborg_fb_update_display,
517 syborg_fb_invalidate_display,
520 if (s->cols != 0 && s->rows != 0) {
521 qemu_console_resize(s->ds, s->cols, s->rows);
525 s->cols = ds_get_width(s->ds);
527 s->rows = ds_get_height(s->ds);
529 register_savevm("syborg_framebuffer", -1, 1,
530 syborg_fb_save, syborg_fb_load, s);
534 static SysBusDeviceInfo syborg_fb_info = {
535 .init = syborg_fb_init,
536 .qdev.name = "syborg,framebuffer",
537 .qdev.size = sizeof(SyborgFBState),
538 .qdev.props = (Property[]) {
539 DEFINE_PROP_UINT32("width", SyborgFBState, cols, 0),
540 DEFINE_PROP_UINT32("height", SyborgFBState, rows, 0),
541 DEFINE_PROP_END_OF_LIST(),
545 static void syborg_fb_register_devices(void)
547 sysbus_register_withprop(&syborg_fb_info);
550 device_init(syborg_fb_register_devices)