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qemu/hw/display/tcx.c
Mark Cave-Ayland da87dd7bd7 sun4m: Add FCode ROM for TCX framebuffer 
Upstream OpenBIOS now implements SBus probing in order to determine the
contents of a physical bus slot, which is required to allow OpenBIOS to
identify the framebuffer without help from the fw_cfg interface.

SBus probing works by detecting the presence of an FCode program
(effectively tokenised Forth) at the base address of each slot, and if
present executes it so that it creates its own device node in the
OpenBIOS device tree.

The FCode ROM is generated as part of the OpenBIOS build and should
generally be updated at the same time.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: Blue Swirl <blauwirbel@gmail.com>
CC: Bob Breuer <breuerr@mc.net>
CC: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-11-21 17:38:52 +01:00

652 lines
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/*
* 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 "qemu-common.h"
#include "ui/console.h"
#include "ui/pixel_ops.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#define TCX_ROM_FILE "QEMU,tcx.bin"
#define FCODE_MAX_ROM_SIZE 0x10000
#define MAXX 1024
#define MAXY 768
#define TCX_DAC_NREGS 16
#define TCX_THC_NREGS_8 0x081c
#define TCX_THC_NREGS_24 0x1000
#define TCX_TEC_NREGS 0x1000
#define TYPE_TCX "SUNW,tcx"
#define TCX(obj) OBJECT_CHECK(TCXState, (obj), TYPE_TCX)
typedef struct TCXState {
SysBusDevice parent_obj;
QemuConsole *con;
uint8_t *vram;
uint32_t *vram24, *cplane;
hwaddr prom_addr;
MemoryRegion rom;
MemoryRegion vram_mem;
MemoryRegion vram_8bit;
MemoryRegion vram_24bit;
MemoryRegion vram_cplane;
MemoryRegion dac;
MemoryRegion tec;
MemoryRegion thc24;
MemoryRegion thc8;
ram_addr_t vram24_offset, cplane_offset;
uint32_t vram_size;
uint32_t palette[256];
uint8_t r[256], g[256], b[256];
uint16_t width, height, depth;
uint8_t dac_index, dac_state;
} TCXState;
static void tcx_set_dirty(TCXState *s)
{
memory_region_set_dirty(&s->vram_mem, 0, MAXX * MAXY);
}
static void tcx24_set_dirty(TCXState *s)
{
memory_region_set_dirty(&s->vram_mem, s->vram24_offset, MAXX * MAXY * 4);
memory_region_set_dirty(&s->vram_mem, s->cplane_offset, MAXX * MAXY * 4);
}
static void update_palette_entries(TCXState *s, int start, int end)
{
DisplaySurface *surface = qemu_console_surface(s->con);
int i;
for (i = start; i < end; i++) {
switch (surface_bits_per_pixel(surface)) {
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:
if (is_surface_bgr(surface)) {
s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]);
} else {
s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
}
break;
}
}
if (s->depth == 24) {
tcx24_set_dirty(s);
} else {
tcx_set_dirty(s);
}
}
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++;
*p++ = s1->palette[val];
}
}
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++;
*p++ = s1->palette[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++;
*d++ = s1->palette[val];
}
}
/*
XXX Could be much more optimal:
* detect if line/page/whole screen is in 24 bit mode
* if destination is also BGR, use memcpy
*/
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)
{
DisplaySurface *surface = qemu_console_surface(s1->con);
int x, bgr, r, g, b;
uint8_t val, *p8;
uint32_t *p = (uint32_t *)d;
uint32_t dval;
bgr = is_surface_bgr(surface);
for(x = 0; x < width; x++, s++, s24++) {
if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
// 24-bit direct, BGR order
p8 = (uint8_t *)s24;
p8++;
b = *p8++;
g = *p8++;
r = *p8;
if (bgr)
dval = rgb_to_pixel32bgr(r, g, b);
else
dval = rgb_to_pixel32(r, g, b);
} else {
val = *s;
dval = s1->palette[val];
}
*p++ = dval;
}
}
static inline int check_dirty(TCXState *s, ram_addr_t page, ram_addr_t page24,
ram_addr_t cpage)
{
int ret;
ret = memory_region_get_dirty(&s->vram_mem, page, TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
ret |= memory_region_get_dirty(&s->vram_mem, page24, TARGET_PAGE_SIZE * 4,
DIRTY_MEMORY_VGA);
ret |= memory_region_get_dirty(&s->vram_mem, cpage, TARGET_PAGE_SIZE * 4,
DIRTY_MEMORY_VGA);
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)
{
memory_region_reset_dirty(&ts->vram_mem,
page_min,
(page_max - page_min) + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
memory_region_reset_dirty(&ts->vram_mem,
page24 + page_min * 4,
(page_max - page_min) * 4 + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
memory_region_reset_dirty(&ts->vram_mem,
cpage + page_min * 4,
(page_max - page_min) * 4 + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
}
/* Fixed line length 1024 allows us to do nice tricks not possible on
VGA... */
static void tcx_update_display(void *opaque)
{
TCXState *ts = opaque;
DisplaySurface *surface = qemu_console_surface(ts->con);
ram_addr_t page, page_min, page_max;
int y, y_start, dd, ds;
uint8_t *d, *s;
void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
if (surface_bits_per_pixel(surface) == 0) {
return;
}
page = 0;
y_start = -1;
page_min = -1;
page_max = 0;
d = surface_data(surface);
s = ts->vram;
dd = surface_stride(surface);
ds = 1024;
switch (surface_bits_per_pixel(surface)) {
case 32:
f = tcx_draw_line32;
break;
case 15:
case 16:
f = tcx_draw_line16;
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 (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA)) {
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_gfx_update(ts->con, 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_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
/* reset modified pages */
if (page_max >= page_min) {
memory_region_reset_dirty(&ts->vram_mem,
page_min,
(page_max - page_min) + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
}
}
static void tcx24_update_display(void *opaque)
{
TCXState *ts = opaque;
DisplaySurface *surface = qemu_console_surface(ts->con);
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 (surface_bits_per_pixel(surface) != 32) {
return;
}
page = 0;
page24 = ts->vram24_offset;
cpage = ts->cplane_offset;
y_start = -1;
page_min = -1;
page_max = 0;
d = surface_data(surface);
s = ts->vram;
s24 = ts->vram24;
cptr = ts->cplane;
dd = surface_stride(surface);
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_gfx_update(ts->con, 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_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
/* reset modified pages */
if (page_max >= page_min) {
reset_dirty(ts, page_min, page_max, page24, cpage);
}
}
static void tcx_invalidate_display(void *opaque)
{
TCXState *s = opaque;
tcx_set_dirty(s);
qemu_console_resize(s->con, s->width, s->height);
}
static void tcx24_invalidate_display(void *opaque)
{
TCXState *s = opaque;
tcx_set_dirty(s);
tcx24_set_dirty(s);
qemu_console_resize(s->con, s->width, s->height);
}
static int vmstate_tcx_post_load(void *opaque, int version_id)
{
TCXState *s = opaque;
update_palette_entries(s, 0, 256);
if (s->depth == 24) {
tcx24_set_dirty(s);
} else {
tcx_set_dirty(s);
}
return 0;
}
static const VMStateDescription vmstate_tcx = {
.name ="tcx",
.version_id = 4,
.minimum_version_id = 4,
.minimum_version_id_old = 4,
.post_load = vmstate_tcx_post_load,
.fields = (VMStateField []) {
VMSTATE_UINT16(height, TCXState),
VMSTATE_UINT16(width, TCXState),
VMSTATE_UINT16(depth, TCXState),
VMSTATE_BUFFER(r, TCXState),
VMSTATE_BUFFER(g, TCXState),
VMSTATE_BUFFER(b, TCXState),
VMSTATE_UINT8(dac_index, TCXState),
VMSTATE_UINT8(dac_state, TCXState),
VMSTATE_END_OF_LIST()
}
};
static void tcx_reset(DeviceState *d)
{
TCXState *s = TCX(d);
/* 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;
update_palette_entries(s, 0, 256);
memset(s->vram, 0, MAXX*MAXY);
memory_region_reset_dirty(&s->vram_mem, 0, MAXX * MAXY * (1 + 4 + 4),
DIRTY_MEMORY_VGA);
s->dac_index = 0;
s->dac_state = 0;
}
static uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void tcx_dac_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
TCXState *s = opaque;
switch (addr) {
case 0:
s->dac_index = val >> 24;
s->dac_state = 0;
break;
case 4:
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;
}
}
static const MemoryRegionOps tcx_dac_ops = {
.read = tcx_dac_readl,
.write = tcx_dac_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static uint64_t dummy_readl(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void dummy_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
}
static const MemoryRegionOps dummy_ops = {
.read = dummy_readl,
.write = dummy_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.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 = TCX(dev);
ram_addr_t vram_offset = 0;
int size, ret;
uint8_t *vram_base;
char *fcode_filename;
memory_region_init_ram(&s->vram_mem, OBJECT(s), "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);
/* FCode ROM */
memory_region_init_ram(&s->rom, NULL, "tcx.prom", FCODE_MAX_ROM_SIZE);
vmstate_register_ram_global(&s->rom);
memory_region_set_readonly(&s->rom, true);
sysbus_init_mmio(dev, &s->rom);
fcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, TCX_ROM_FILE);
if (fcode_filename) {
ret = load_image_targphys(fcode_filename, s->prom_addr,
FCODE_MAX_ROM_SIZE);
if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
fprintf(stderr, "tcx: could not load prom '%s'\n", TCX_ROM_FILE);
return -1;
}
}
/* 8-bit plane */
s->vram = vram_base;
size = s->vram_size;
memory_region_init_alias(&s->vram_8bit, OBJECT(s), "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, OBJECT(s), &tcx_dac_ops, s,
"tcx.dac", TCX_DAC_NREGS);
sysbus_init_mmio(dev, &s->dac);
/* TEC (dummy) */
memory_region_init_io(&s->tec, OBJECT(s), &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, OBJECT(s), &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, OBJECT(s), "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, OBJECT(s), "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, OBJECT(s), &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_HEX64("prom_addr", TCXState, prom_addr, -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 = TYPE_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)
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