664 lines
18 KiB
C
664 lines
18 KiB
C
/*
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* QEMU TCX Frame buffer
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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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 "sun4m.h"
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#include "console.h"
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#include "pixel_ops.h"
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#include "sysbus.h"
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#include "qdev-addr.h"
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#define MAXX 1024
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#define MAXY 768
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#define TCX_DAC_NREGS 16
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#define TCX_THC_NREGS_8 0x081c
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#define TCX_THC_NREGS_24 0x1000
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#define TCX_TEC_NREGS 0x1000
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typedef struct TCXState {
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SysBusDevice busdev;
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target_phys_addr_t addr;
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DisplayState *ds;
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uint8_t *vram;
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uint32_t *vram24, *cplane;
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ram_addr_t vram_offset, vram24_offset, cplane_offset;
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uint32_t vram_size;
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uint16_t width, height, depth;
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uint8_t r[256], g[256], b[256];
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uint32_t palette[256];
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uint8_t dac_index, dac_state;
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} TCXState;
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static void tcx_screen_dump(void *opaque, const char *filename);
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static void tcx24_screen_dump(void *opaque, const char *filename);
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static void tcx_set_dirty(TCXState *s)
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{
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unsigned int i;
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for (i = 0; i < MAXX * MAXY; i += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty(s->vram_offset + i);
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}
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}
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static void tcx24_set_dirty(TCXState *s)
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{
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unsigned int i;
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for (i = 0; i < MAXX * MAXY * 4; i += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty(s->vram24_offset + i);
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cpu_physical_memory_set_dirty(s->cplane_offset + i);
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}
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}
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static void update_palette_entries(TCXState *s, int start, int end)
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{
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int i;
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for(i = start; i < end; i++) {
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switch(ds_get_bits_per_pixel(s->ds)) {
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default:
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case 8:
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s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
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break;
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case 15:
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s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
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break;
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case 16:
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s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
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break;
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case 32:
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if (is_surface_bgr(s->ds->surface))
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s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]);
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else
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s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
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break;
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}
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}
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if (s->depth == 24) {
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tcx24_set_dirty(s);
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} else {
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tcx_set_dirty(s);
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}
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}
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static void tcx_draw_line32(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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uint32_t *p = (uint32_t *)d;
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for(x = 0; x < width; x++) {
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val = *s++;
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*p++ = s1->palette[val];
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}
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}
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static void tcx_draw_line16(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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uint16_t *p = (uint16_t *)d;
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for(x = 0; x < width; x++) {
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val = *s++;
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*p++ = s1->palette[val];
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}
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}
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static void tcx_draw_line8(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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for(x = 0; x < width; x++) {
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val = *s++;
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*d++ = s1->palette[val];
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}
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}
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/*
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XXX Could be much more optimal:
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* detect if line/page/whole screen is in 24 bit mode
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* if destination is also BGR, use memcpy
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*/
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static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width,
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const uint32_t *cplane,
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const uint32_t *s24)
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{
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int x, bgr, r, g, b;
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uint8_t val, *p8;
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uint32_t *p = (uint32_t *)d;
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uint32_t dval;
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bgr = is_surface_bgr(s1->ds->surface);
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for(x = 0; x < width; x++, s++, s24++) {
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if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
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// 24-bit direct, BGR order
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p8 = (uint8_t *)s24;
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p8++;
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b = *p8++;
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g = *p8++;
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r = *p8++;
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if (bgr)
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dval = rgb_to_pixel32bgr(r, g, b);
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else
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dval = rgb_to_pixel32(r, g, b);
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} else {
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val = *s;
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dval = s1->palette[val];
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}
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*p++ = dval;
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}
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}
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static inline int check_dirty(ram_addr_t page, ram_addr_t page24,
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ram_addr_t cpage)
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{
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int ret;
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unsigned int off;
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ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
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for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
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ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
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ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
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}
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return ret;
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}
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static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
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ram_addr_t page_max, ram_addr_t page24,
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ram_addr_t cpage)
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{
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cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
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VGA_DIRTY_FLAG);
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page_min -= ts->vram_offset;
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page_max -= ts->vram_offset;
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cpu_physical_memory_reset_dirty(page24 + page_min * 4,
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page24 + page_max * 4 + TARGET_PAGE_SIZE,
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VGA_DIRTY_FLAG);
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cpu_physical_memory_reset_dirty(cpage + page_min * 4,
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cpage + page_max * 4 + TARGET_PAGE_SIZE,
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VGA_DIRTY_FLAG);
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}
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/* Fixed line length 1024 allows us to do nice tricks not possible on
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VGA... */
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static void tcx_update_display(void *opaque)
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{
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TCXState *ts = opaque;
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ram_addr_t page, page_min, page_max;
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int y, y_start, dd, ds;
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uint8_t *d, *s;
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void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
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if (ds_get_bits_per_pixel(ts->ds) == 0)
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return;
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page = ts->vram_offset;
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y_start = -1;
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page_min = -1;
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page_max = 0;
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d = ds_get_data(ts->ds);
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s = ts->vram;
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dd = ds_get_linesize(ts->ds);
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ds = 1024;
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switch (ds_get_bits_per_pixel(ts->ds)) {
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case 32:
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f = tcx_draw_line32;
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break;
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case 15:
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case 16:
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f = tcx_draw_line16;
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break;
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default:
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case 8:
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f = tcx_draw_line8;
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break;
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case 0:
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return;
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}
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for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
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if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
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if (y_start < 0)
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y_start = y;
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if (page < page_min)
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page_min = page;
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if (page > page_max)
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page_max = page;
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f(ts, d, s, ts->width);
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d += dd;
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s += ds;
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f(ts, d, s, ts->width);
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d += dd;
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s += ds;
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f(ts, d, s, ts->width);
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d += dd;
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s += ds;
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f(ts, d, s, ts->width);
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d += dd;
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s += ds;
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} else {
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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ts->width, y - y_start);
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y_start = -1;
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}
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d += dd * 4;
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s += ds * 4;
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}
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}
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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ts->width, y - y_start);
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}
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/* reset modified pages */
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if (page_max >= page_min) {
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cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
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VGA_DIRTY_FLAG);
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}
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}
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static void tcx24_update_display(void *opaque)
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{
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TCXState *ts = opaque;
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ram_addr_t page, page_min, page_max, cpage, page24;
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int y, y_start, dd, ds;
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uint8_t *d, *s;
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uint32_t *cptr, *s24;
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if (ds_get_bits_per_pixel(ts->ds) != 32)
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return;
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page = ts->vram_offset;
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page24 = ts->vram24_offset;
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cpage = ts->cplane_offset;
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y_start = -1;
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page_min = -1;
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page_max = 0;
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d = ds_get_data(ts->ds);
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s = ts->vram;
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s24 = ts->vram24;
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cptr = ts->cplane;
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dd = ds_get_linesize(ts->ds);
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ds = 1024;
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for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
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page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
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if (check_dirty(page, page24, cpage)) {
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if (y_start < 0)
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y_start = y;
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if (page < page_min)
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page_min = page;
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if (page > page_max)
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page_max = page;
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tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
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d += dd;
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s += ds;
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cptr += ds;
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s24 += ds;
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tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
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d += dd;
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s += ds;
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cptr += ds;
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s24 += ds;
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tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
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d += dd;
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s += ds;
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cptr += ds;
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s24 += ds;
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tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
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d += dd;
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s += ds;
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cptr += ds;
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s24 += ds;
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} else {
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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ts->width, y - y_start);
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y_start = -1;
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}
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d += dd * 4;
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s += ds * 4;
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cptr += ds * 4;
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s24 += ds * 4;
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}
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}
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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ts->width, y - y_start);
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}
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/* reset modified pages */
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if (page_max >= page_min) {
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reset_dirty(ts, page_min, page_max, page24, cpage);
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}
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}
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static void tcx_invalidate_display(void *opaque)
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{
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TCXState *s = opaque;
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tcx_set_dirty(s);
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qemu_console_resize(s->ds, s->width, s->height);
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}
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static void tcx24_invalidate_display(void *opaque)
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{
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TCXState *s = opaque;
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tcx_set_dirty(s);
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tcx24_set_dirty(s);
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qemu_console_resize(s->ds, s->width, s->height);
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}
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static void tcx_save(QEMUFile *f, void *opaque)
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{
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TCXState *s = opaque;
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qemu_put_be16s(f, &s->height);
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qemu_put_be16s(f, &s->width);
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qemu_put_be16s(f, &s->depth);
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qemu_put_buffer(f, s->r, 256);
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qemu_put_buffer(f, s->g, 256);
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qemu_put_buffer(f, s->b, 256);
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qemu_put_8s(f, &s->dac_index);
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qemu_put_8s(f, &s->dac_state);
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}
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static int tcx_load(QEMUFile *f, void *opaque, int version_id)
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{
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TCXState *s = opaque;
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uint32_t dummy;
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if (version_id != 3 && version_id != 4)
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return -EINVAL;
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if (version_id == 3) {
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qemu_get_be32s(f, &dummy);
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qemu_get_be32s(f, &dummy);
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qemu_get_be32s(f, &dummy);
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}
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qemu_get_be16s(f, &s->height);
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qemu_get_be16s(f, &s->width);
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qemu_get_be16s(f, &s->depth);
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qemu_get_buffer(f, s->r, 256);
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qemu_get_buffer(f, s->g, 256);
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qemu_get_buffer(f, s->b, 256);
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qemu_get_8s(f, &s->dac_index);
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qemu_get_8s(f, &s->dac_state);
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update_palette_entries(s, 0, 256);
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if (s->depth == 24) {
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tcx24_set_dirty(s);
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} else {
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tcx_set_dirty(s);
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}
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return 0;
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}
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static void tcx_reset(void *opaque)
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{
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TCXState *s = opaque;
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/* Initialize palette */
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memset(s->r, 0, 256);
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memset(s->g, 0, 256);
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memset(s->b, 0, 256);
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s->r[255] = s->g[255] = s->b[255] = 255;
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update_palette_entries(s, 0, 256);
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memset(s->vram, 0, MAXX*MAXY);
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cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
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MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG);
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s->dac_index = 0;
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s->dac_state = 0;
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}
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static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
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{
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return 0;
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}
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|
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static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
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{
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TCXState *s = opaque;
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switch (addr) {
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case 0:
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s->dac_index = val >> 24;
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s->dac_state = 0;
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break;
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case 4:
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switch (s->dac_state) {
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case 0:
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s->r[s->dac_index] = val >> 24;
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update_palette_entries(s, s->dac_index, s->dac_index + 1);
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s->dac_state++;
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break;
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case 1:
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s->g[s->dac_index] = val >> 24;
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update_palette_entries(s, s->dac_index, s->dac_index + 1);
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s->dac_state++;
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break;
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case 2:
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s->b[s->dac_index] = val >> 24;
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update_palette_entries(s, s->dac_index, s->dac_index + 1);
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s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
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default:
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s->dac_state = 0;
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break;
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}
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break;
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default:
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break;
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}
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return;
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}
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|
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static CPUReadMemoryFunc * const tcx_dac_read[3] = {
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NULL,
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NULL,
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tcx_dac_readl,
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};
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|
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static CPUWriteMemoryFunc * const tcx_dac_write[3] = {
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NULL,
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NULL,
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tcx_dac_writel,
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};
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|
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static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
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{
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return 0;
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}
|
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static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
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uint32_t val)
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{
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}
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static CPUReadMemoryFunc * const tcx_dummy_read[3] = {
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NULL,
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NULL,
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tcx_dummy_readl,
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};
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static CPUWriteMemoryFunc * const tcx_dummy_write[3] = {
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NULL,
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NULL,
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tcx_dummy_writel,
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};
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static void tcx_init1(SysBusDevice *dev)
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{
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TCXState *s = FROM_SYSBUS(TCXState, dev);
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int io_memory, dummy_memory;
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ram_addr_t vram_offset;
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int size;
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uint8_t *vram_base;
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vram_offset = qemu_ram_alloc(s->vram_size * (1 + 4 + 4));
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vram_base = qemu_get_ram_ptr(vram_offset);
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s->vram_offset = vram_offset;
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/* 8-bit plane */
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s->vram = vram_base;
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size = s->vram_size;
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sysbus_init_mmio(dev, size, s->vram_offset);
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vram_offset += size;
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vram_base += size;
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/* DAC */
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io_memory = cpu_register_io_memory(tcx_dac_read, tcx_dac_write, s);
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sysbus_init_mmio(dev, TCX_DAC_NREGS, io_memory);
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|
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/* TEC (dummy) */
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dummy_memory = cpu_register_io_memory(tcx_dummy_read, tcx_dummy_write,
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s);
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sysbus_init_mmio(dev, TCX_TEC_NREGS, dummy_memory);
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/* THC: NetBSD writes here even with 8-bit display: dummy */
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sysbus_init_mmio(dev, TCX_THC_NREGS_24, dummy_memory);
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|
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if (s->depth == 24) {
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/* 24-bit plane */
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size = s->vram_size * 4;
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s->vram24 = (uint32_t *)vram_base;
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s->vram24_offset = vram_offset;
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sysbus_init_mmio(dev, size, vram_offset);
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vram_offset += size;
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vram_base += size;
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|
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/* Control plane */
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size = s->vram_size * 4;
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s->cplane = (uint32_t *)vram_base;
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s->cplane_offset = vram_offset;
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sysbus_init_mmio(dev, size, vram_offset);
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s->ds = graphic_console_init(tcx24_update_display,
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tcx24_invalidate_display,
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tcx24_screen_dump, NULL, s);
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} else {
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/* THC 8 bit (dummy) */
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sysbus_init_mmio(dev, TCX_THC_NREGS_8, dummy_memory);
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|
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s->ds = graphic_console_init(tcx_update_display,
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tcx_invalidate_display,
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tcx_screen_dump, NULL, s);
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}
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|
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register_savevm("tcx", -1, 4, tcx_save, tcx_load, s);
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qemu_register_reset(tcx_reset, s);
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tcx_reset(s);
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qemu_console_resize(s->ds, s->width, s->height);
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}
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|
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static void tcx_screen_dump(void *opaque, const char *filename)
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|
{
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TCXState *s = opaque;
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FILE *f;
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uint8_t *d, *d1, v;
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int y, x;
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|
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|
f = fopen(filename, "wb");
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if (!f)
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return;
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fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
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d1 = s->vram;
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for(y = 0; y < s->height; y++) {
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|
d = d1;
|
|
for(x = 0; x < s->width; x++) {
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|
v = *d;
|
|
fputc(s->r[v], f);
|
|
fputc(s->g[v], f);
|
|
fputc(s->b[v], f);
|
|
d++;
|
|
}
|
|
d1 += MAXX;
|
|
}
|
|
fclose(f);
|
|
return;
|
|
}
|
|
|
|
static void tcx24_screen_dump(void *opaque, const char *filename)
|
|
{
|
|
TCXState *s = opaque;
|
|
FILE *f;
|
|
uint8_t *d, *d1, v;
|
|
uint32_t *s24, *cptr, dval;
|
|
int y, x;
|
|
|
|
f = fopen(filename, "wb");
|
|
if (!f)
|
|
return;
|
|
fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
|
|
d1 = s->vram;
|
|
s24 = s->vram24;
|
|
cptr = s->cplane;
|
|
for(y = 0; y < s->height; y++) {
|
|
d = d1;
|
|
for(x = 0; x < s->width; x++, d++, s24++) {
|
|
if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
|
|
dval = *s24 & 0x00ffffff;
|
|
fputc((dval >> 16) & 0xff, f);
|
|
fputc((dval >> 8) & 0xff, f);
|
|
fputc(dval & 0xff, f);
|
|
} else {
|
|
v = *d;
|
|
fputc(s->r[v], f);
|
|
fputc(s->g[v], f);
|
|
fputc(s->b[v], f);
|
|
}
|
|
}
|
|
d1 += MAXX;
|
|
}
|
|
fclose(f);
|
|
return;
|
|
}
|
|
|
|
static SysBusDeviceInfo tcx_info = {
|
|
.init = tcx_init1,
|
|
.qdev.name = "SUNW,tcx",
|
|
.qdev.size = sizeof(TCXState),
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_PROP_TADDR("addr", TCXState, addr, -1),
|
|
DEFINE_PROP_HEX32("vram_size", TCXState, vram_size, -1),
|
|
DEFINE_PROP_UINT16("width", TCXState, width, -1),
|
|
DEFINE_PROP_UINT16("height", TCXState, height, -1),
|
|
DEFINE_PROP_UINT16("depth", TCXState, depth, -1),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
}
|
|
};
|
|
|
|
static void tcx_register_devices(void)
|
|
{
|
|
sysbus_register_withprop(&tcx_info);
|
|
}
|
|
|
|
device_init(tcx_register_devices)
|