/*
* QEMU Sun4m System Emulator
*
* Copyright (c) 2003-2004 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
/*
* Proll uses only small part of display, we need to switch to full
* display when we get linux framebuffer console or X11 running. For
* now it's just slower and awkward.
*/
#if 1
#define XSZ (8*80)
#define YSZ (24*11)
#define XOFF (MAXX-XSZ)
#define YOFF (MAXY-YSZ)
#else
#define XSZ MAXX
#define YSZ MAXY
#define XOFF 0
#define YOFF 0
#endif
typedef struct TCXState {
uint32_t addr;
DisplayState *ds;
uint8_t *vram;
unsigned long vram_offset;
uint8_t r[256], g[256], b[256];
} TCXState;
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->r[val];
*d++ = s1->g[val];
*d++ = s1->b[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->r[val];
*d++ = s1->g[val];
*d++ = s1->b[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... */
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;
#ifdef LD_BYPASS_OK
page = ts->vram_offset + YOFF*MAXX;
#else
page = ts->addr + YOFF*MAXX;
#endif
y_start = -1;
page_min = 0x7fffffff;
page_max = -1;
d = ts->ds->data;
s = ts->vram + YOFF*MAXX + XOFF;
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 < YSZ; y += 4, page += TARGET_PAGE_SIZE) {
if (cpu_physical_memory_is_dirty(page)) {
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, XSZ);
d += dd;
s += ds;
f(ts, d, s, XSZ);
d += dd;
s += ds;
f(ts, d, s, XSZ);
d += dd;
s += ds;
f(ts, d, s, XSZ);
d += dd;
s += ds;
} else {
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
XSZ, 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,
XSZ, y - y_start);
}
/* reset modified pages */
if (page_max != -1) {
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE);
}
}
void tcx_invalidate_display(void *opaque)
{
TCXState *s = opaque;
int i;
for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
#ifdef LD_BYPASS_OK
cpu_physical_memory_set_dirty(s->vram_offset + i);
#else
cpu_physical_memory_set_dirty(s->addr + i);
#endif
}
}
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_buffer(f, s->r, 256);
qemu_put_buffer(f, s->g, 256);
qemu_put_buffer(f, s->b, 256);
}
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_buffer(f, s->r, 256);
qemu_get_buffer(f, s->g, 256);
qemu_get_buffer(f, s->b, 256);
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);
#ifdef LD_BYPASS_OK
cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY - 1);
#endif
}
void *tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
unsigned long vram_offset, int vram_size)
{
TCXState *s;
s = qemu_mallocz(sizeof(TCXState));
if (!s)
return NULL;
s->ds = ds;
s->addr = addr;
s->vram = vram_base;
s->vram_offset = vram_offset;
cpu_register_physical_memory(addr, vram_size, vram_offset);
register_savevm("tcx", addr, 1, tcx_save, tcx_load, s);
qemu_register_reset(tcx_reset, s);
tcx_reset(s);
dpy_resize(s->ds, XSZ, YSZ);
return s;
}
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", XSZ, YSZ, 255);
d1 = s->vram + YOFF*MAXX + XOFF;
for(y = 0; y < YSZ; y++) {
d = d1;
for(x = 0; x < XSZ; x++) {
v = *d;
fputc(s->r[v], f);
fputc(s->g[v], f);
fputc(s->b[v], f);
d++;
}
d1 += MAXX;
}
fclose(f);
return;
}
