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;
227 /* Our bpp constants mostly match the PL110/PL111 but
228 * not for the 16 bit case
235 bpp_offset += s->bpp;
237 fn = fntable[bpp_offset];
240 src_width = s->pitch;
267 dest_width *= s->cols;
269 /* TODO: Implement blanking. */
271 if (s->need_update && s->bpp <= BPP_SRC_8) {
272 syborg_fb_update_palette(s);
274 framebuffer_update_display(s->ds,
275 s->base, s->cols, s->rows,
276 src_width, dest_width, 0,
281 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
284 s->int_status |= FB_INT_VSYNC;
291 static void syborg_fb_invalidate_display(void * opaque)
293 SyborgFBState *s = (SyborgFBState *)opaque;
297 static uint32_t syborg_fb_read(void *opaque, target_phys_addr_t offset)
299 SyborgFBState *s = opaque;
301 DPRINTF("read reg %d\n", (int)offset);
303 switch (offset >> 2) {
305 return SYBORG_ID_FRAMEBUFFER;
323 return s->int_enable;
325 case FB_INTERRUPT_CAUSE:
326 return s->int_status;
330 case BPP_SRC_1: return 1;
331 case BPP_SRC_2: return 2;
332 case BPP_SRC_4: return 4;
333 case BPP_SRC_8: return 8;
334 case BPP_SRC_15: return 15;
335 case BPP_SRC_16: return 16;
336 case BPP_SRC_24: return 24;
337 case BPP_SRC_32: return 32;
357 if ((offset >> 2) >= FB_PALETTE_START
358 && (offset >> 2) <= FB_PALETTE_END) {
359 return s->raw_palette[(offset >> 2) - FB_PALETTE_START];
361 cpu_abort (cpu_single_env, "syborg_fb_read: Bad offset %x\n",
368 static void syborg_fb_write(void *opaque, target_phys_addr_t offset,
371 SyborgFBState *s = opaque;
373 DPRINTF("write reg %d = %d\n", (int)offset, val);
376 switch (offset >> 2) {
393 /* TODO: Implement rotation. */
405 case FB_INTERRUPT_CAUSE:
406 s->int_status &= ~val;
412 case 1: val = BPP_SRC_1; break;
413 case 2: val = BPP_SRC_2; break;
414 case 4: val = BPP_SRC_4; break;
415 case 8: val = BPP_SRC_8; break;
416 /* case 15: val = BPP_SRC_15; break; */
417 case 16: val = BPP_SRC_16; break;
418 /* case 24: val = BPP_SRC_24; break; */
419 case 32: val = BPP_SRC_32; break;
420 default: val = s->bpp; break;
430 s->endian = (val != 0);
434 /* TODO: Implement this. */
446 if ((offset >> 2) >= FB_PALETTE_START
447 && (offset >> 2) <= FB_PALETTE_END) {
448 s->raw_palette[(offset >> 2) - FB_PALETTE_START] = val;
450 cpu_abort (cpu_single_env, "syborg_fb_write: Bad offset %x\n",
457 static CPUReadMemoryFunc * const syborg_fb_readfn[] = {
463 static CPUWriteMemoryFunc * const syborg_fb_writefn[] = {
469 static void syborg_fb_save(QEMUFile *f, void *opaque)
471 SyborgFBState *s = opaque;
474 qemu_put_be32(f, s->need_int);
475 qemu_put_be32(f, s->int_status);
476 qemu_put_be32(f, s->int_enable);
477 qemu_put_be32(f, s->enabled);
478 qemu_put_be32(f, s->base);
479 qemu_put_be32(f, s->pitch);
480 qemu_put_be32(f, s->rows);
481 qemu_put_be32(f, s->cols);
482 qemu_put_be32(f, s->bpp);
483 qemu_put_be32(f, s->rgb);
484 for (i = 0; i < 256; i++) {
485 qemu_put_be32(f, s->raw_palette[i]);
489 static int syborg_fb_load(QEMUFile *f, void *opaque, int version_id)
491 SyborgFBState *s = opaque;
497 s->need_int = qemu_get_be32(f);
498 s->int_status = qemu_get_be32(f);
499 s->int_enable = qemu_get_be32(f);
500 s->enabled = qemu_get_be32(f);
501 s->base = qemu_get_be32(f);
502 s->pitch = qemu_get_be32(f);
503 s->rows = qemu_get_be32(f);
504 s->cols = qemu_get_be32(f);
505 s->bpp = qemu_get_be32(f);
506 s->rgb = qemu_get_be32(f);
507 for (i = 0; i < 256; i++) {
508 s->raw_palette[i] = qemu_get_be32(f);
515 static int syborg_fb_init(SysBusDevice *dev)
517 SyborgFBState *s = FROM_SYSBUS(SyborgFBState, dev);
520 sysbus_init_irq(dev, &s->irq);
521 iomemtype = cpu_register_io_memory(syborg_fb_readfn,
522 syborg_fb_writefn, s,
523 DEVICE_NATIVE_ENDIAN);
524 sysbus_init_mmio(dev, 0x1000, iomemtype);
526 s->ds = graphic_console_init(syborg_fb_update_display,
527 syborg_fb_invalidate_display,
530 if (s->cols != 0 && s->rows != 0) {
531 qemu_console_resize(s->ds, s->cols, s->rows);
535 s->cols = ds_get_width(s->ds);
537 s->rows = ds_get_height(s->ds);
539 register_savevm(&dev->qdev, "syborg_framebuffer", -1, 1,
540 syborg_fb_save, syborg_fb_load, s);
544 static SysBusDeviceInfo syborg_fb_info = {
545 .init = syborg_fb_init,
546 .qdev.name = "syborg,framebuffer",
547 .qdev.size = sizeof(SyborgFBState),
548 .qdev.props = (Property[]) {
549 DEFINE_PROP_UINT32("width", SyborgFBState, cols, 0),
550 DEFINE_PROP_UINT32("height", SyborgFBState, rows, 0),
551 DEFINE_PROP_END_OF_LIST(),
555 static void syborg_fb_register_devices(void)
557 sysbus_register_withprop(&syborg_fb_info);
560 device_init(syborg_fb_register_devices)