/*
- * QEMU Sun4m System Emulator
+ * QEMU TCX Frame buffer
*
- * Copyright (c) 2003-2004 Fabrice Bellard
+ * 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
#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
+#define TCX_DAC_NREGS 16
+#define TCX_THC_NREGS_8 0x081c
+#define TCX_THC_NREGS_24 0x1000
+#define TCX_TEC_NREGS 0x1000
typedef struct TCXState {
- uint32_t addr;
+ target_phys_addr_t addr;
DisplayState *ds;
uint8_t *vram;
- unsigned long vram_offset;
+ uint32_t *vram24, *cplane;
+ ram_addr_t vram_offset, vram24_offset, cplane_offset;
+ uint16_t width, height, depth;
uint8_t r[256], g[256], b[256];
+ uint32_t palette[256];
+ uint8_t dac_index, dac_state;
} TCXState;
+static void tcx_screen_dump(void *opaque, const char *filename);
+static void tcx24_screen_dump(void *opaque, const char *filename);
+
+/* XXX: unify with vga draw line functions */
+static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
+{
+ return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
+}
+
+static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
+{
+ return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
+}
+
+static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
+{
+ return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+}
+
+static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
+{
+ return (r << 16) | (g << 8) | b;
+}
+
+static void update_palette_entries(TCXState *s, int start, int end)
+{
+ int i;
+ for(i = start; i < end; i++) {
+ switch(s->ds->depth) {
+ default:
+ case 8:
+ s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
+ break;
+ case 15:
+ s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
+ break;
+ case 16:
+ s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
+ break;
+ case 32:
+ s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
+ break;
+ }
+ }
+}
+
static void tcx_draw_line32(TCXState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int x;
uint8_t val;
+ uint32_t *p = (uint32_t *)d;
for(x = 0; x < width; x++) {
val = *s++;
- *d++ = s1->r[val];
- *d++ = s1->g[val];
- *d++ = s1->b[val];
- d++;
+ *p++ = s1->palette[val];
}
}
-static void tcx_draw_line24(TCXState *s1, uint8_t *d,
+static void tcx_draw_line16(TCXState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int x;
uint8_t val;
+ uint16_t *p = (uint16_t *)d;
for(x = 0; x < width; x++) {
val = *s++;
- *d++ = s1->r[val];
- *d++ = s1->g[val];
- *d++ = s1->b[val];
+ *p++ = s1->palette[val];
}
}
for(x = 0; x < width; x++) {
val = *s++;
- /* XXX translate between palettes? */
- *d++ = val;
+ *d++ = s1->palette[val];
+ }
+}
+
+static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
+ const uint8_t *s, int width,
+ const uint32_t *cplane,
+ const uint32_t *s24)
+{
+ int x;
+ uint8_t val;
+ uint32_t *p = (uint32_t *)d;
+ uint32_t dval;
+
+ for(x = 0; x < width; x++, s++, s24++) {
+ if ((bswap32(*cplane++) & 0xff000000) == 0x03000000) { // 24-bit direct
+ dval = bswap32(*s24) & 0x00ffffff;
+ } else {
+ val = *s;
+ dval = s1->palette[val];
+ }
+ *p++ = dval;
}
}
+static inline int check_dirty(TCXState *ts, ram_addr_t page, ram_addr_t page24,
+ ram_addr_t cpage)
+{
+ int ret;
+ unsigned int off;
+
+ ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
+ for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
+ ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG);
+ ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG);
+ }
+ return ret;
+}
+
+static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
+ ram_addr_t page_max, ram_addr_t page24,
+ ram_addr_t cpage)
+{
+ cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
+ VGA_DIRTY_FLAG);
+ page_min -= ts->vram_offset;
+ page_max -= ts->vram_offset;
+ cpu_physical_memory_reset_dirty(page24 + page_min * 4,
+ page24 + page_max * 4 + TARGET_PAGE_SIZE,
+ VGA_DIRTY_FLAG);
+ cpu_physical_memory_reset_dirty(cpage + page_min * 4,
+ cpage + page_max * 4 + TARGET_PAGE_SIZE,
+ VGA_DIRTY_FLAG);
+}
+
/* Fixed line length 1024 allows us to do nice tricks not possible on
VGA... */
-void tcx_update_display(void *opaque)
+static void tcx_update_display(void *opaque)
{
TCXState *ts = opaque;
- uint32_t page;
- int y, page_min, page_max, y_start, dd, ds;
+ ram_addr_t page, page_min, page_max;
+ int y, 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 + YOFF*MAXX;
+ page = ts->vram_offset;
y_start = -1;
- page_min = 0x7fffffff;
- page_max = -1;
+ page_min = 0xffffffff;
+ page_max = 0;
d = ts->ds->data;
- s = ts->vram + YOFF*MAXX + XOFF;
+ s = ts->vram;
dd = ts->ds->linesize;
ds = 1024;
case 32:
f = tcx_draw_line32;
break;
- case 24:
- f = tcx_draw_line24;
+ case 15:
+ case 16:
+ f = tcx_draw_line16;
break;
default:
case 8:
return;
}
- for(y = 0; y < YSZ; y += 4, page += TARGET_PAGE_SIZE) {
+ 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;
page_min = page;
if (page > page_max)
page_max = page;
- f(ts, d, s, XSZ);
+ f(ts, d, s, ts->width);
d += dd;
s += ds;
- f(ts, d, s, XSZ);
+ f(ts, d, s, ts->width);
d += dd;
s += ds;
- f(ts, d, s, XSZ);
+ f(ts, d, s, ts->width);
d += dd;
s += ds;
- f(ts, d, s, XSZ);
+ 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,
- XSZ, y - y_start);
+ ts->width, y - y_start);
y_start = -1;
}
d += dd * 4;
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
- XSZ, y - y_start);
+ ts->width, y - y_start);
}
/* reset modified pages */
- if (page_max != -1) {
+ if (page_min <= page_max) {
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
VGA_DIRTY_FLAG);
}
}
-void tcx_invalidate_display(void *opaque)
+static void tcx24_update_display(void *opaque)
+{
+ TCXState *ts = opaque;
+ ram_addr_t page, page_min, page_max, cpage, page24;
+ int y, y_start, dd, ds;
+ uint8_t *d, *s;
+ uint32_t *cptr, *s24;
+
+ if (ts->ds->depth != 32)
+ return;
+ page = ts->vram_offset;
+ page24 = ts->vram24_offset;
+ cpage = ts->cplane_offset;
+ y_start = -1;
+ page_min = 0xffffffff;
+ page_max = 0;
+ d = ts->ds->data;
+ s = ts->vram;
+ s24 = ts->vram24;
+ cptr = ts->cplane;
+ dd = ts->ds->linesize;
+ ds = 1024;
+
+ for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
+ page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
+ if (check_dirty(ts, page, page24, cpage)) {
+ if (y_start < 0)
+ y_start = y;
+ if (page < page_min)
+ page_min = page;
+ if (page > page_max)
+ page_max = page;
+ tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
+ d += dd;
+ s += ds;
+ cptr += ds;
+ s24 += ds;
+ tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
+ d += dd;
+ s += ds;
+ cptr += ds;
+ s24 += ds;
+ tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
+ d += dd;
+ s += ds;
+ cptr += ds;
+ s24 += ds;
+ tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
+ d += dd;
+ s += ds;
+ cptr += ds;
+ s24 += 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;
+ cptr += ds * 4;
+ s24 += 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_min <= page_max) {
+ reset_dirty(ts, page_min, page_max, page24, cpage);
+ }
+}
+
+static void tcx_invalidate_display(void *opaque)
{
TCXState *s = opaque;
int i;
}
}
+static void tcx24_invalidate_display(void *opaque)
+{
+ TCXState *s = opaque;
+ int i;
+
+ tcx_invalidate_display(s);
+ for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) {
+ cpu_physical_memory_set_dirty(s->vram24_offset + i);
+ cpu_physical_memory_set_dirty(s->cplane_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_be32s(f, (uint32_t *)&s->vram24);
+ qemu_put_be32s(f, (uint32_t *)&s->cplane);
+ qemu_put_be16s(f, (uint16_t *)&s->height);
+ qemu_put_be16s(f, (uint16_t *)&s->width);
+ qemu_put_be16s(f, (uint16_t *)&s->depth);
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)
+ if (version_id != 3)
return -EINVAL;
- qemu_get_be32s(f, (uint32_t *)&s->addr);
qemu_get_be32s(f, (uint32_t *)&s->vram);
+ qemu_get_be32s(f, (uint32_t *)&s->vram24);
+ qemu_get_be32s(f, (uint32_t *)&s->cplane);
+ qemu_get_be16s(f, (uint16_t *)&s->height);
+ qemu_get_be16s(f, (uint16_t *)&s->width);
+ qemu_get_be16s(f, (uint16_t *)&s->depth);
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);
+ update_palette_entries(s, 0, 256);
+ tcx_invalidate_display(s);
+
return 0;
}
memset(s->g, 0, 256);
memset(s->b, 0, 256);
s->r[255] = s->g[255] = s->b[255] = 255;
+ update_palette_entries(s, 0, 256);
memset(s->vram, 0, MAXX*MAXY);
- cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY,
- VGA_DIRTY_FLAG);
+ cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset +
+ MAXX * MAXY * (1 + 4 + 4), 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;
+ update_palette_entries(s, s->dac_index, s->dac_index + 1);
+ s->dac_state++;
+ break;
+ case 1:
+ s->g[s->dac_index] = val >> 24;
+ update_palette_entries(s, s->dac_index, s->dac_index + 1);
+ s->dac_state++;
+ break;
+ case 2:
+ s->b[s->dac_index] = val >> 24;
+ update_palette_entries(s, s->dac_index, s->dac_index + 1);
+ s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
+ default:
+ s->dac_state = 0;
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ return;
}
-void *tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
- unsigned long vram_offset, int vram_size)
+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,
+};
+
+static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
+{
+ return 0;
+}
+
+static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
+ uint32_t val)
+{
+}
+
+static CPUReadMemoryFunc *tcx_dummy_read[3] = {
+ tcx_dummy_readl,
+ tcx_dummy_readl,
+ tcx_dummy_readl,
+};
+
+static CPUWriteMemoryFunc *tcx_dummy_write[3] = {
+ tcx_dummy_writel,
+ tcx_dummy_writel,
+ tcx_dummy_writel,
+};
+
+void tcx_init(DisplayState *ds, target_phys_addr_t addr, uint8_t *vram_base,
+ unsigned long vram_offset, int vram_size, int width, int height,
+ int depth)
{
TCXState *s;
+ int io_memory, dummy_memory;
+ int size;
s = qemu_mallocz(sizeof(TCXState));
if (!s)
- return NULL;
+ return;
s->ds = ds;
s->addr = addr;
- s->vram = vram_base;
s->vram_offset = vram_offset;
+ s->width = width;
+ s->height = height;
+ s->depth = depth;
+
+ // 8-bit plane
+ s->vram = vram_base;
+ size = vram_size;
+ cpu_register_physical_memory(addr + 0x00800000ULL, size, vram_offset);
+ vram_offset += size;
+ vram_base += size;
+
+ io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
+ cpu_register_physical_memory(addr + 0x00200000ULL, TCX_DAC_NREGS, io_memory);
- cpu_register_physical_memory(addr, vram_size, vram_offset);
+ dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write,
+ s);
+ cpu_register_physical_memory(addr + 0x00700000ULL, TCX_TEC_NREGS,
+ dummy_memory);
+ if (depth == 24) {
+ // 24-bit plane
+ size = vram_size * 4;
+ s->vram24 = (uint32_t *)vram_base;
+ s->vram24_offset = vram_offset;
+ cpu_register_physical_memory(addr + 0x02000000ULL, size, vram_offset);
+ vram_offset += size;
+ vram_base += size;
- register_savevm("tcx", addr, 1, tcx_save, tcx_load, s);
+ // Control plane
+ size = vram_size * 4;
+ s->cplane = (uint32_t *)vram_base;
+ s->cplane_offset = vram_offset;
+ cpu_register_physical_memory(addr + 0x0a000000ULL, size, vram_offset);
+ graphic_console_init(s->ds, tcx24_update_display,
+ tcx24_invalidate_display, tcx24_screen_dump, s);
+ } else {
+ cpu_register_physical_memory(addr + 0x00300000ULL, TCX_THC_NREGS_8,
+ dummy_memory);
+ graphic_console_init(s->ds, tcx_update_display, tcx_invalidate_display,
+ tcx_screen_dump, s);
+ }
+ // NetBSD writes here even with 8-bit display
+ cpu_register_physical_memory(addr + 0x00301000ULL, TCX_THC_NREGS_24,
+ dummy_memory);
+
+ register_savevm("tcx", addr, 3, tcx_save, tcx_load, s);
qemu_register_reset(tcx_reset, s);
tcx_reset(s);
- dpy_resize(s->ds, XSZ, YSZ);
- return s;
+ dpy_resize(s->ds, width, height);
}
-void tcx_screen_dump(void *opaque, const char *filename)
+static void tcx_screen_dump(void *opaque, const char *filename)
{
TCXState *s = opaque;
FILE *f;
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++) {
+ 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 < XSZ; x++) {
+ for(x = 0; x < s->width; x++) {
v = *d;
fputc(s->r[v], f);
fputc(s->g[v], 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;
+}
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