root / hw / syborg_fb.c @ 91011d4f
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/*
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* Syborg Framebuffer
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*
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* Copyright (c) 2009 CodeSourcery
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "sysbus.h" |
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#include "console.h" |
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#include "syborg.h" |
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#include "framebuffer.h" |
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//#define DEBUG_SYBORG_FB
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#ifdef DEBUG_SYBORG_FB
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#define DPRINTF(fmt, ...) \
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do { printf("syborg_fb: " fmt , ## __VA_ARGS__); } while (0) |
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "syborg_fb: error: " fmt , ## __VA_ARGS__); \ |
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exit(1);} while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "syborg_fb: error: " fmt , ## __VA_ARGS__);} while (0) |
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#endif
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enum {
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FB_ID = 0,
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FB_BASE = 1,
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FB_HEIGHT = 2,
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FB_WIDTH = 3,
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FB_ORIENTATION = 4,
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FB_BLANK = 5,
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FB_INT_MASK = 6,
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FB_INTERRUPT_CAUSE = 7,
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FB_BPP = 8,
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FB_COLOR_ORDER = 9,
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FB_BYTE_ORDER = 10,
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FB_PIXEL_ORDER = 11,
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FB_ROW_PITCH = 12,
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FB_ENABLED = 13,
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FB_PALETTE_START = 0x400 >> 2, |
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FB_PALETTE_END = FB_PALETTE_START+256-1, |
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}; |
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#define FB_INT_VSYNC (1U << 0) |
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#define FB_INT_BASE_UPDATE_DONE (1U << 1) |
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typedef struct { |
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SysBusDevice busdev; |
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DisplayState *ds; |
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/*QEMUConsole *console;*/
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uint32_t need_update : 1;
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uint32_t need_int : 1;
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uint32_t enabled : 1;
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uint32_t int_status; |
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uint32_t int_enable; |
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qemu_irq irq; |
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uint32_t base; |
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uint32_t pitch; |
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uint32_t rows; |
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uint32_t cols; |
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int blank;
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int bpp;
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int rgb; /* 0 = BGR, 1 = RGB */ |
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int endian; /* 0 = Little, 1 = Big */ |
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uint32_t raw_palette[256];
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uint32_t palette[256];
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} SyborgFBState; |
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enum {
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BPP_SRC_1, |
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BPP_SRC_2, |
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BPP_SRC_4, |
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BPP_SRC_8, |
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BPP_SRC_16, |
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BPP_SRC_32, |
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/* TODO: Implement these. */
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BPP_SRC_15 = -1,
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BPP_SRC_24 = -2
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}; |
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#include "pixel_ops.h" |
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#define BITS 8 |
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#include "pl110_template.h" |
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#define BITS 15 |
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#include "pl110_template.h" |
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#define BITS 16 |
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#include "pl110_template.h" |
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#define BITS 24 |
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#include "pl110_template.h" |
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#define BITS 32 |
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#include "pl110_template.h" |
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/* Update interrupts. */
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static void syborg_fb_update(SyborgFBState *s) |
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{ |
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if ((s->int_status & s->int_enable) != 0) { |
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DPRINTF("Raise IRQ\n");
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qemu_irq_raise(s->irq); |
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} else {
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DPRINTF("Lower IRQ\n");
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qemu_irq_lower(s->irq); |
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} |
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} |
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static int syborg_fb_enabled(const SyborgFBState *s) |
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{ |
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return s->enabled;
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} |
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static void syborg_fb_update_palette(SyborgFBState *s) |
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{ |
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int n, i;
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uint32_t raw; |
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unsigned int r, g, b; |
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switch (s->bpp) {
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case BPP_SRC_1: n = 2; break; |
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case BPP_SRC_2: n = 4; break; |
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case BPP_SRC_4: n = 16; break; |
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case BPP_SRC_8: n = 256; break; |
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default: return; |
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} |
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for (i = 0; i < n; i++) { |
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raw = s->raw_palette[i]; |
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r = (raw >> 16) & 0xff; |
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g = (raw >> 8) & 0xff; |
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b = raw & 0xff;
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switch (ds_get_bits_per_pixel(s->ds)) {
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case 8: |
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s->palette[i] = rgb_to_pixel8(r, g, b); |
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break;
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case 15: |
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s->palette[i] = rgb_to_pixel15(r, g, b); |
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break;
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case 16: |
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s->palette[i] = rgb_to_pixel16(r, g, b); |
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break;
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case 24: |
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case 32: |
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s->palette[i] = rgb_to_pixel32(r, g, b); |
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break;
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default:
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abort(); |
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} |
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} |
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} |
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static void syborg_fb_update_display(void *opaque) |
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{ |
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SyborgFBState *s = (SyborgFBState *)opaque; |
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drawfn* fntable; |
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drawfn fn; |
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int dest_width;
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int src_width;
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int bpp_offset;
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int first;
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int last;
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if (!syborg_fb_enabled(s))
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return;
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switch (ds_get_bits_per_pixel(s->ds)) {
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case 0: |
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return;
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case 8: |
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fntable = pl110_draw_fn_8; |
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dest_width = 1;
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break;
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case 15: |
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fntable = pl110_draw_fn_15; |
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dest_width = 2;
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break;
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case 16: |
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fntable = pl110_draw_fn_16; |
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dest_width = 2;
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break;
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case 24: |
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fntable = pl110_draw_fn_24; |
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dest_width = 3;
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break;
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case 32: |
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fntable = pl110_draw_fn_32; |
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dest_width = 4;
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break;
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default:
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fprintf(stderr, "syborg_fb: Bad color depth\n");
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exit(1);
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} |
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if (s->need_int) {
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s->int_status |= FB_INT_BASE_UPDATE_DONE; |
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syborg_fb_update(s); |
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s->need_int = 0;
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} |
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if (s->rgb) {
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bpp_offset = 18;
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} else {
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bpp_offset = 0;
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} |
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if (s->endian) {
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bpp_offset += 6;
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} |
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fn = fntable[s->bpp + bpp_offset]; |
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if (s->pitch) {
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src_width = s->pitch; |
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} else {
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src_width = s->cols; |
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switch (s->bpp) {
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case BPP_SRC_1:
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src_width >>= 3;
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break;
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case BPP_SRC_2:
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src_width >>= 2;
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break;
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case BPP_SRC_4:
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src_width >>= 1;
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break;
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case BPP_SRC_8:
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break;
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case BPP_SRC_15:
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case BPP_SRC_16:
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src_width <<= 1;
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break;
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case BPP_SRC_24:
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src_width *= 3;
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break;
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case BPP_SRC_32:
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src_width <<= 2;
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break;
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} |
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} |
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dest_width *= s->cols; |
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first = 0;
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/* TODO: Implement blanking. */
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if (!s->blank) {
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if (s->need_update && s->bpp <= BPP_SRC_8) {
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syborg_fb_update_palette(s); |
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} |
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framebuffer_update_display(s->ds, |
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s->base, s->cols, s->rows, |
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src_width, dest_width, 0,
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s->need_update, |
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fn, s->palette, |
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&first, &last); |
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if (first >= 0) { |
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dpy_update(s->ds, 0, first, s->cols, last - first + 1); |
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} |
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s->int_status |= FB_INT_VSYNC; |
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syborg_fb_update(s); |
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} |
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s->need_update = 0;
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} |
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static void syborg_fb_invalidate_display(void * opaque) |
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{ |
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SyborgFBState *s = (SyborgFBState *)opaque; |
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s->need_update = 1;
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} |
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static uint32_t syborg_fb_read(void *opaque, target_phys_addr_t offset) |
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{ |
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SyborgFBState *s = opaque; |
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DPRINTF("read reg %d\n", (int)offset); |
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offset &= 0xfff;
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switch (offset >> 2) { |
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case FB_ID:
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return SYBORG_ID_FRAMEBUFFER;
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case FB_BASE:
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return s->base;
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case FB_HEIGHT:
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return s->rows;
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case FB_WIDTH:
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return s->cols;
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case FB_ORIENTATION:
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return 0; |
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case FB_BLANK:
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return s->blank;
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case FB_INT_MASK:
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return s->int_enable;
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case FB_INTERRUPT_CAUSE:
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return s->int_status;
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case FB_BPP:
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switch (s->bpp) {
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case BPP_SRC_1: return 1; |
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case BPP_SRC_2: return 2; |
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case BPP_SRC_4: return 4; |
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case BPP_SRC_8: return 8; |
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case BPP_SRC_15: return 15; |
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case BPP_SRC_16: return 16; |
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case BPP_SRC_24: return 24; |
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case BPP_SRC_32: return 32; |
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default: return 0; |
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} |
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case FB_COLOR_ORDER:
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return s->rgb;
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case FB_BYTE_ORDER:
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return s->endian;
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case FB_PIXEL_ORDER:
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return 0; |
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case FB_ROW_PITCH:
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return s->pitch;
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case FB_ENABLED:
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return s->enabled;
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default:
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if ((offset >> 2) >= FB_PALETTE_START |
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&& (offset >> 2) <= FB_PALETTE_END) {
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return s->raw_palette[(offset >> 2) - FB_PALETTE_START]; |
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} else {
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cpu_abort (cpu_single_env, "syborg_fb_read: Bad offset %x\n",
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(int)offset);
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} |
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return 0; |
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} |
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} |
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static void syborg_fb_write(void *opaque, target_phys_addr_t offset, |
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uint32_t val) |
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{ |
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SyborgFBState *s = opaque; |
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DPRINTF("write reg %d = %d\n", (int)offset, val); |
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s->need_update = 1;
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offset &= 0xfff;
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switch (offset >> 2) { |
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case FB_BASE:
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s->base = val; |
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s->need_int = 1;
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s->need_update = 1;
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syborg_fb_update(s); |
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break;
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case FB_HEIGHT:
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s->rows = val; |
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break;
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case FB_WIDTH:
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s->cols = val; |
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break;
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case FB_ORIENTATION:
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/* TODO: Implement rotation. */
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break;
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case FB_BLANK:
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s->blank = val & 1;
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break;
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case FB_INT_MASK:
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s->int_enable = val; |
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syborg_fb_update(s); |
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break;
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case FB_INTERRUPT_CAUSE:
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s->int_status &= ~val; |
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syborg_fb_update(s); |
399 |
break;
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case FB_BPP:
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switch (val) {
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case 1: val = BPP_SRC_1; break; |
404 |
case 2: val = BPP_SRC_2; break; |
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case 4: val = BPP_SRC_4; break; |
406 |
case 8: val = BPP_SRC_8; break; |
407 |
/* case 15: val = BPP_SRC_15; break; */
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case 16: val = BPP_SRC_16; break; |
409 |
/* case 24: val = BPP_SRC_24; break; */
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case 32: val = BPP_SRC_32; break; |
411 |
default: val = s->bpp; break; |
412 |
} |
413 |
s->bpp = val; |
414 |
break;
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case FB_COLOR_ORDER:
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s->rgb = (val != 0);
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break;
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419 |
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420 |
case FB_BYTE_ORDER:
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s->endian = (val != 0);
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422 |
break;
|
423 |
|
424 |
case FB_PIXEL_ORDER:
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/* TODO: Implement this. */
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426 |
break;
|
427 |
|
428 |
case FB_ROW_PITCH:
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429 |
s->pitch = val; |
430 |
break;
|
431 |
|
432 |
case FB_ENABLED:
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433 |
s->enabled = val; |
434 |
break;
|
435 |
|
436 |
default:
|
437 |
if ((offset >> 2) >= FB_PALETTE_START |
438 |
&& (offset >> 2) <= FB_PALETTE_END) {
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439 |
s->raw_palette[(offset >> 2) - FB_PALETTE_START] = val;
|
440 |
} else {
|
441 |
cpu_abort (cpu_single_env, "syborg_fb_write: Bad offset %x\n",
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442 |
(int)offset);
|
443 |
} |
444 |
break;
|
445 |
} |
446 |
} |
447 |
|
448 |
static CPUReadMemoryFunc * const syborg_fb_readfn[] = { |
449 |
syborg_fb_read, |
450 |
syborg_fb_read, |
451 |
syborg_fb_read |
452 |
}; |
453 |
|
454 |
static CPUWriteMemoryFunc * const syborg_fb_writefn[] = { |
455 |
syborg_fb_write, |
456 |
syborg_fb_write, |
457 |
syborg_fb_write |
458 |
}; |
459 |
|
460 |
static void syborg_fb_save(QEMUFile *f, void *opaque) |
461 |
{ |
462 |
SyborgFBState *s = opaque; |
463 |
int i;
|
464 |
|
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]); |
477 |
} |
478 |
} |
479 |
|
480 |
static int syborg_fb_load(QEMUFile *f, void *opaque, int version_id) |
481 |
{ |
482 |
SyborgFBState *s = opaque; |
483 |
int i;
|
484 |
|
485 |
if (version_id != 1) |
486 |
return -EINVAL;
|
487 |
|
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); |
500 |
} |
501 |
s->need_update = 1;
|
502 |
|
503 |
return 0; |
504 |
} |
505 |
|
506 |
static int syborg_fb_init(SysBusDevice *dev) |
507 |
{ |
508 |
SyborgFBState *s = FROM_SYSBUS(SyborgFBState, dev); |
509 |
int iomemtype;
|
510 |
|
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);
|
515 |
|
516 |
s->ds = graphic_console_init(syborg_fb_update_display, |
517 |
syborg_fb_invalidate_display, |
518 |
NULL, NULL, s); |
519 |
|
520 |
if (s->cols != 0 && s->rows != 0) { |
521 |
qemu_console_resize(s->ds, s->cols, s->rows); |
522 |
} |
523 |
|
524 |
if (!s->cols)
|
525 |
s->cols = ds_get_width(s->ds); |
526 |
if (!s->rows)
|
527 |
s->rows = ds_get_height(s->ds); |
528 |
|
529 |
register_savevm("syborg_framebuffer", -1, 1, |
530 |
syborg_fb_save, syborg_fb_load, s); |
531 |
return 0; |
532 |
} |
533 |
|
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(), |
542 |
} |
543 |
}; |
544 |
|
545 |
static void syborg_fb_register_devices(void) |
546 |
{ |
547 |
sysbus_register_withprop(&syborg_fb_info); |
548 |
} |
549 |
|
550 |
device_init(syborg_fb_register_devices) |