622 lines
18 KiB
C
622 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 "qemu-common.h"
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#include "ui/console.h"
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#include "ui/pixel_ops.h"
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#include "hw/sysbus.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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QemuConsole *con;
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uint8_t *vram;
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uint32_t *vram24, *cplane;
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MemoryRegion vram_mem;
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MemoryRegion vram_8bit;
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MemoryRegion vram_24bit;
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MemoryRegion vram_cplane;
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MemoryRegion dac;
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MemoryRegion tec;
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MemoryRegion thc24;
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MemoryRegion thc8;
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ram_addr_t vram24_offset, cplane_offset;
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uint32_t vram_size;
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uint32_t palette[256];
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uint8_t r[256], g[256], b[256];
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uint16_t width, height, depth;
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uint8_t dac_index, dac_state;
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} TCXState;
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static void tcx_set_dirty(TCXState *s)
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{
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memory_region_set_dirty(&s->vram_mem, 0, MAXX * MAXY);
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}
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static void tcx24_set_dirty(TCXState *s)
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{
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memory_region_set_dirty(&s->vram_mem, s->vram24_offset, MAXX * MAXY * 4);
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memory_region_set_dirty(&s->vram_mem, s->cplane_offset, MAXX * MAXY * 4);
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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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DisplaySurface *surface = qemu_console_surface(s->con);
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int i;
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for (i = start; i < end; i++) {
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switch (surface_bits_per_pixel(surface)) {
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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(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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}
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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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DisplaySurface *surface = qemu_console_surface(s1->con);
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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(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(TCXState *s, 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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ret = memory_region_get_dirty(&s->vram_mem, page, TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA);
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ret |= memory_region_get_dirty(&s->vram_mem, page24, TARGET_PAGE_SIZE * 4,
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DIRTY_MEMORY_VGA);
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ret |= memory_region_get_dirty(&s->vram_mem, cpage, TARGET_PAGE_SIZE * 4,
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DIRTY_MEMORY_VGA);
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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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memory_region_reset_dirty(&ts->vram_mem,
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page_min,
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(page_max - page_min) + TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA);
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memory_region_reset_dirty(&ts->vram_mem,
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page24 + page_min * 4,
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(page_max - page_min) * 4 + TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA);
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memory_region_reset_dirty(&ts->vram_mem,
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cpage + page_min * 4,
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(page_max - page_min) * 4 + TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA);
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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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DisplaySurface *surface = qemu_console_surface(ts->con);
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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 (surface_bits_per_pixel(surface) == 0) {
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return;
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}
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page = 0;
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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 = surface_data(surface);
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s = ts->vram;
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dd = surface_stride(surface);
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ds = 1024;
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switch (surface_bits_per_pixel(surface)) {
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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 (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA)) {
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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_gfx_update(ts->con, 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_gfx_update(ts->con, 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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memory_region_reset_dirty(&ts->vram_mem,
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page_min,
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(page_max - page_min) + TARGET_PAGE_SIZE,
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DIRTY_MEMORY_VGA);
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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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DisplaySurface *surface = qemu_console_surface(ts->con);
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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 (surface_bits_per_pixel(surface) != 32) {
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return;
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}
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page = 0;
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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 = surface_data(surface);
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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 = surface_stride(surface);
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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(ts, 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_gfx_update(ts->con, 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_gfx_update(ts->con, 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->con, 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->con, s->width, s->height);
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}
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static int vmstate_tcx_post_load(void *opaque, int version_id)
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{
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TCXState *s = opaque;
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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 const VMStateDescription vmstate_tcx = {
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.name ="tcx",
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.version_id = 4,
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.minimum_version_id = 4,
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.minimum_version_id_old = 4,
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.post_load = vmstate_tcx_post_load,
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.fields = (VMStateField []) {
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VMSTATE_UINT16(height, TCXState),
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VMSTATE_UINT16(width, TCXState),
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VMSTATE_UINT16(depth, TCXState),
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VMSTATE_BUFFER(r, TCXState),
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VMSTATE_BUFFER(g, TCXState),
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VMSTATE_BUFFER(b, TCXState),
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VMSTATE_UINT8(dac_index, TCXState),
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VMSTATE_UINT8(dac_state, TCXState),
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VMSTATE_END_OF_LIST()
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}
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};
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static void tcx_reset(DeviceState *d)
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{
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TCXState *s = container_of(d, TCXState, busdev.qdev);
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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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memory_region_reset_dirty(&s->vram_mem, 0, MAXX * MAXY * (1 + 4 + 4),
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DIRTY_MEMORY_VGA);
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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 uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
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unsigned size)
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{
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return 0;
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}
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static void tcx_dac_writel(void *opaque, hwaddr addr, uint64_t val,
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unsigned size)
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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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}
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static const MemoryRegionOps tcx_dac_ops = {
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.read = tcx_dac_readl,
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.write = tcx_dac_writel,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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static uint64_t dummy_readl(void *opaque, hwaddr addr,
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unsigned size)
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{
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return 0;
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}
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static void dummy_writel(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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}
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static const MemoryRegionOps dummy_ops = {
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.read = dummy_readl,
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.write = dummy_writel,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 4,
|
|
.max_access_size = 4,
|
|
},
|
|
};
|
|
|
|
static const GraphicHwOps tcx_ops = {
|
|
.invalidate = tcx_invalidate_display,
|
|
.gfx_update = tcx_update_display,
|
|
};
|
|
|
|
static const GraphicHwOps tcx24_ops = {
|
|
.invalidate = tcx24_invalidate_display,
|
|
.gfx_update = tcx24_update_display,
|
|
};
|
|
|
|
static int tcx_init1(SysBusDevice *dev)
|
|
{
|
|
TCXState *s = FROM_SYSBUS(TCXState, dev);
|
|
ram_addr_t vram_offset = 0;
|
|
int size;
|
|
uint8_t *vram_base;
|
|
|
|
memory_region_init_ram(&s->vram_mem, NULL, "tcx.vram",
|
|
s->vram_size * (1 + 4 + 4));
|
|
vmstate_register_ram_global(&s->vram_mem);
|
|
vram_base = memory_region_get_ram_ptr(&s->vram_mem);
|
|
|
|
/* 8-bit plane */
|
|
s->vram = vram_base;
|
|
size = s->vram_size;
|
|
memory_region_init_alias(&s->vram_8bit, NULL, "tcx.vram.8bit",
|
|
&s->vram_mem, vram_offset, size);
|
|
sysbus_init_mmio(dev, &s->vram_8bit);
|
|
vram_offset += size;
|
|
vram_base += size;
|
|
|
|
/* DAC */
|
|
memory_region_init_io(&s->dac, NULL, &tcx_dac_ops, s, "tcx.dac", TCX_DAC_NREGS);
|
|
sysbus_init_mmio(dev, &s->dac);
|
|
|
|
/* TEC (dummy) */
|
|
memory_region_init_io(&s->tec, NULL, &dummy_ops, s, "tcx.tec", TCX_TEC_NREGS);
|
|
sysbus_init_mmio(dev, &s->tec);
|
|
/* THC: NetBSD writes here even with 8-bit display: dummy */
|
|
memory_region_init_io(&s->thc24, NULL, &dummy_ops, s, "tcx.thc24",
|
|
TCX_THC_NREGS_24);
|
|
sysbus_init_mmio(dev, &s->thc24);
|
|
|
|
if (s->depth == 24) {
|
|
/* 24-bit plane */
|
|
size = s->vram_size * 4;
|
|
s->vram24 = (uint32_t *)vram_base;
|
|
s->vram24_offset = vram_offset;
|
|
memory_region_init_alias(&s->vram_24bit, NULL, "tcx.vram.24bit",
|
|
&s->vram_mem, vram_offset, size);
|
|
sysbus_init_mmio(dev, &s->vram_24bit);
|
|
vram_offset += size;
|
|
vram_base += size;
|
|
|
|
/* Control plane */
|
|
size = s->vram_size * 4;
|
|
s->cplane = (uint32_t *)vram_base;
|
|
s->cplane_offset = vram_offset;
|
|
memory_region_init_alias(&s->vram_cplane, NULL, "tcx.vram.cplane",
|
|
&s->vram_mem, vram_offset, size);
|
|
sysbus_init_mmio(dev, &s->vram_cplane);
|
|
|
|
s->con = graphic_console_init(DEVICE(dev), &tcx24_ops, s);
|
|
} else {
|
|
/* THC 8 bit (dummy) */
|
|
memory_region_init_io(&s->thc8, NULL, &dummy_ops, s, "tcx.thc8",
|
|
TCX_THC_NREGS_8);
|
|
sysbus_init_mmio(dev, &s->thc8);
|
|
|
|
s->con = graphic_console_init(DEVICE(dev), &tcx_ops, s);
|
|
}
|
|
|
|
qemu_console_resize(s->con, s->width, s->height);
|
|
return 0;
|
|
}
|
|
|
|
static Property tcx_properties[] = {
|
|
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_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
|
|
|
|
k->init = tcx_init1;
|
|
dc->reset = tcx_reset;
|
|
dc->vmsd = &vmstate_tcx;
|
|
dc->props = tcx_properties;
|
|
}
|
|
|
|
static const TypeInfo tcx_info = {
|
|
.name = "SUNW,tcx",
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(TCXState),
|
|
.class_init = tcx_class_init,
|
|
};
|
|
|
|
static void tcx_register_types(void)
|
|
{
|
|
type_register_static(&tcx_info);
|
|
}
|
|
|
|
type_init(tcx_register_types)
|