aboutsummaryrefslogtreecommitdiffstats
path: root/hw/tcx.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/tcx.c')
-rw-r--r--hw/tcx.c330
1 files changed, 0 insertions, 330 deletions
diff --git a/hw/tcx.c b/hw/tcx.c
deleted file mode 100644
index a3a2114..0000000
--- a/hw/tcx.c
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * QEMU TCX Frame buffer
- *
- * Copyright (c) 2003-2005 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "vl.h"
-
-#define MAXX 1024
-#define MAXY 768
-#define TCX_DAC_NREGS 16
-
-typedef struct TCXState {
- uint32_t addr;
- DisplayState *ds;
- uint8_t *vram;
- unsigned long vram_offset;
- uint16_t width, height;
- uint8_t r[256], g[256], b[256];
- uint8_t dac_index, dac_state;
-} TCXState;
-
-static void tcx_screen_dump(void *opaque, const char *filename);
-
-static void tcx_draw_line32(TCXState *s1, uint8_t *d,
- const uint8_t *s, int width)
-{
- int x;
- uint8_t val;
-
- for(x = 0; x < width; x++) {
- val = *s++;
- *d++ = s1->b[val];
- *d++ = s1->g[val];
- *d++ = s1->r[val];
- d++;
- }
-}
-
-static void tcx_draw_line24(TCXState *s1, uint8_t *d,
- const uint8_t *s, int width)
-{
- int x;
- uint8_t val;
-
- for(x = 0; x < width; x++) {
- val = *s++;
- *d++ = s1->b[val];
- *d++ = s1->g[val];
- *d++ = s1->r[val];
- }
-}
-
-static void tcx_draw_line8(TCXState *s1, uint8_t *d,
- const uint8_t *s, int width)
-{
- int x;
- uint8_t val;
-
- for(x = 0; x < width; x++) {
- val = *s++;
- /* XXX translate between palettes? */
- *d++ = val;
- }
-}
-
-/* Fixed line length 1024 allows us to do nice tricks not possible on
- VGA... */
-static void tcx_update_display(void *opaque)
-{
- TCXState *ts = opaque;
- uint32_t page;
- int y, page_min, page_max, y_start, dd, ds;
- uint8_t *d, *s;
- void (*f)(TCXState *s1, uint8_t *d, const uint8_t *s, int width);
-
- if (ts->ds->depth == 0)
- return;
- page = ts->vram_offset;
- y_start = -1;
- page_min = 0x7fffffff;
- page_max = -1;
- d = ts->ds->data;
- s = ts->vram;
- dd = ts->ds->linesize;
- ds = 1024;
-
- switch (ts->ds->depth) {
- case 32:
- f = tcx_draw_line32;
- break;
- case 24:
- f = tcx_draw_line24;
- break;
- default:
- case 8:
- f = tcx_draw_line8;
- break;
- case 0:
- return;
- }
-
- for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
- if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
- if (y_start < 0)
- y_start = y;
- if (page < page_min)
- page_min = page;
- if (page > page_max)
- page_max = page;
- f(ts, d, s, ts->width);
- d += dd;
- s += ds;
- f(ts, d, s, ts->width);
- d += dd;
- s += ds;
- f(ts, d, s, ts->width);
- d += dd;
- s += ds;
- f(ts, d, s, ts->width);
- d += dd;
- s += ds;
- } else {
- if (y_start >= 0) {
- /* flush to display */
- dpy_update(ts->ds, 0, y_start,
- ts->width, y - y_start);
- y_start = -1;
- }
- d += dd * 4;
- s += ds * 4;
- }
- }
- if (y_start >= 0) {
- /* flush to display */
- dpy_update(ts->ds, 0, y_start,
- ts->width, y - y_start);
- }
- /* reset modified pages */
- if (page_max != -1) {
- cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
- VGA_DIRTY_FLAG);
- }
-}
-
-static void tcx_invalidate_display(void *opaque)
-{
- TCXState *s = opaque;
- int i;
-
- for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
- cpu_physical_memory_set_dirty(s->vram_offset + i);
- }
-}
-
-static void tcx_save(QEMUFile *f, void *opaque)
-{
- TCXState *s = opaque;
-
- qemu_put_be32s(f, (uint32_t *)&s->addr);
- qemu_put_be32s(f, (uint32_t *)&s->vram);
- qemu_put_be16s(f, (uint16_t *)&s->height);
- qemu_put_be16s(f, (uint16_t *)&s->width);
- qemu_put_buffer(f, s->r, 256);
- qemu_put_buffer(f, s->g, 256);
- qemu_put_buffer(f, s->b, 256);
- qemu_put_8s(f, &s->dac_index);
- qemu_put_8s(f, &s->dac_state);
-}
-
-static int tcx_load(QEMUFile *f, void *opaque, int version_id)
-{
- TCXState *s = opaque;
-
- if (version_id != 1)
- return -EINVAL;
-
- qemu_get_be32s(f, (uint32_t *)&s->addr);
- qemu_get_be32s(f, (uint32_t *)&s->vram);
- qemu_get_be16s(f, (uint16_t *)&s->height);
- qemu_get_be16s(f, (uint16_t *)&s->width);
- qemu_get_buffer(f, s->r, 256);
- qemu_get_buffer(f, s->g, 256);
- qemu_get_buffer(f, s->b, 256);
- qemu_get_8s(f, &s->dac_index);
- qemu_get_8s(f, &s->dac_state);
- return 0;
-}
-
-static void tcx_reset(void *opaque)
-{
- TCXState *s = opaque;
-
- /* Initialize palette */
- memset(s->r, 0, 256);
- memset(s->g, 0, 256);
- memset(s->b, 0, 256);
- s->r[255] = s->g[255] = s->b[255] = 255;
- memset(s->vram, 0, MAXX*MAXY);
- cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY,
- VGA_DIRTY_FLAG);
- s->dac_index = 0;
- s->dac_state = 0;
-}
-
-static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr)
-{
- return 0;
-}
-
-static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
- TCXState *s = opaque;
- uint32_t saddr;
-
- saddr = (addr & (TCX_DAC_NREGS - 1)) >> 2;
- switch (saddr) {
- case 0:
- s->dac_index = val >> 24;
- s->dac_state = 0;
- break;
- case 1:
- switch (s->dac_state) {
- case 0:
- s->r[s->dac_index] = val >> 24;
- s->dac_state++;
- break;
- case 1:
- s->g[s->dac_index] = val >> 24;
- s->dac_state++;
- break;
- case 2:
- s->b[s->dac_index] = val >> 24;
- default:
- s->dac_state = 0;
- break;
- }
- break;
- default:
- break;
- }
- return;
-}
-
-static CPUReadMemoryFunc *tcx_dac_read[3] = {
- tcx_dac_readl,
- tcx_dac_readl,
- tcx_dac_readl,
-};
-
-static CPUWriteMemoryFunc *tcx_dac_write[3] = {
- tcx_dac_writel,
- tcx_dac_writel,
- tcx_dac_writel,
-};
-
-void tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
- unsigned long vram_offset, int vram_size, int width, int height)
-{
- TCXState *s;
- int io_memory;
-
- s = qemu_mallocz(sizeof(TCXState));
- if (!s)
- return;
- s->ds = ds;
- s->addr = addr;
- s->vram = vram_base;
- s->vram_offset = vram_offset;
- s->width = width;
- s->height = height;
-
- cpu_register_physical_memory(addr + 0x800000, vram_size, vram_offset);
- io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
- cpu_register_physical_memory(addr + 0x200000, TCX_DAC_NREGS, io_memory);
-
- graphic_console_init(s->ds, tcx_update_display, tcx_invalidate_display,
- tcx_screen_dump, s);
- register_savevm("tcx", addr, 1, tcx_save, tcx_load, s);
- qemu_register_reset(tcx_reset, s);
- tcx_reset(s);
- dpy_resize(s->ds, width, height);
-}
-
-static void tcx_screen_dump(void *opaque, const char *filename)
-{
- TCXState *s = opaque;
- FILE *f;
- uint8_t *d, *d1, v;
- 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;
- for(y = 0; y < s->height; y++) {
- d = d1;
- for(x = 0; x < s->width; x++) {
- v = *d;
- fputc(s->r[v], f);
- fputc(s->g[v], f);
- fputc(s->b[v], f);
- d++;
- }
- d1 += MAXX;
- }
- fclose(f);
- return;
-}
-
-
-
generated by cgit v1.1 at 2025-07-03 15:46:18 +0000