mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c39dd14960
qemu/hw/display/tcx.c
Peter Maydell 7713fff47d hw/display/tcx: Drop unnecessary code for handling BGR format outputs 
For a long time now the UI layer has guaranteed that the console
surface is always 32 bits per pixel, RGB. The TCX code already
assumes 32bpp, but it still has some checks of is_surface_bgr()
in an attempt to support 32bpp BGR. is_surface_bgr() will always
return false for the qemu_console_surface(), unless the display
device itself has deliberately created an alternate-format
surface via a function like qemu_create_displaysurface_from().

Drop the never-used BGR-handling code, and assert that we have
a 32-bit surface rather than just doing nothing if it isn't.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210215102149.20513-1-peter.maydell@linaro.org
2021-03-06 13:30:38 +00:00

915 lines
25 KiB
C
Raw Blame History

/*
* 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/osdep.h"
#include "qemu-common.h"
#include "qemu/datadir.h"
#include "qapi/error.h"
#include "ui/console.h"
#include "ui/pixel_ops.h"
#include "hw/loader.h"
#include "hw/qdev-properties.h"
#include "hw/sysbus.h"
#include "migration/vmstate.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qom/object.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 0x1000
#define TCX_DHC_NREGS 0x4000
#define TCX_TEC_NREGS 0x1000
#define TCX_ALT_NREGS 0x8000
#define TCX_STIP_NREGS 0x800000
#define TCX_BLIT_NREGS 0x800000
#define TCX_RSTIP_NREGS 0x800000
#define TCX_RBLIT_NREGS 0x800000
#define TCX_THC_MISC 0x818
#define TCX_THC_CURSXY 0x8fc
#define TCX_THC_CURSMASK 0x900
#define TCX_THC_CURSBITS 0x980
#define TYPE_TCX "SUNW,tcx"
OBJECT_DECLARE_SIMPLE_TYPE(TCXState, TCX)
struct TCXState {
SysBusDevice parent_obj;
QemuConsole *con;
qemu_irq irq;
uint8_t *vram;
uint32_t *vram24, *cplane;
hwaddr prom_addr;
MemoryRegion rom;
MemoryRegion vram_mem;
MemoryRegion vram_8bit;
MemoryRegion vram_24bit;
MemoryRegion stip;
MemoryRegion blit;
MemoryRegion vram_cplane;
MemoryRegion rstip;
MemoryRegion rblit;
MemoryRegion tec;
MemoryRegion dac;
MemoryRegion thc;
MemoryRegion dhc;
MemoryRegion alt;
MemoryRegion thc24;
ram_addr_t vram24_offset, cplane_offset;
uint32_t tmpblit;
uint32_t vram_size;
uint32_t palette[260];
uint8_t r[260], g[260], b[260];
uint16_t width, height, depth;
uint8_t dac_index, dac_state;
uint32_t thcmisc;
uint32_t cursmask[32];
uint32_t cursbits[32];
uint16_t cursx;
uint16_t cursy;
};
static void tcx_set_dirty(TCXState *s, ram_addr_t addr, int len)
{
memory_region_set_dirty(&s->vram_mem, addr, len);
if (s->depth == 24) {
memory_region_set_dirty(&s->vram_mem, s->vram24_offset + addr * 4,
len * 4);
memory_region_set_dirty(&s->vram_mem, s->cplane_offset + addr * 4,
len * 4);
}
}
static int tcx_check_dirty(TCXState *s, DirtyBitmapSnapshot *snap,
ram_addr_t addr, int len)
{
int ret;
ret = memory_region_snapshot_get_dirty(&s->vram_mem, snap, addr, len);
if (s->depth == 24) {
ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
s->vram24_offset + addr * 4, len * 4);
ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
s->cplane_offset + addr * 4, len * 4);
}
return ret;
}
static void update_palette_entries(TCXState *s, int start, int end)
{
int i;
for (i = start; i < end; i++) {
s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
}
tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
}
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_cursor32(TCXState *s1, uint8_t *d,
int y, int width)
{
int x, len;
uint32_t mask, bits;
uint32_t *p = (uint32_t *)d;
y = y - s1->cursy;
mask = s1->cursmask[y];
bits = s1->cursbits[y];
len = MIN(width - s1->cursx, 32);
p = &p[s1->cursx];
for (x = 0; x < len; x++) {
if (mask & 0x80000000) {
if (bits & 0x80000000) {
*p = s1->palette[259];
} else {
*p = s1->palette[258];
}
}
p++;
mask <<= 1;
bits <<= 1;
}
}
/*
* XXX Could be much more optimal:
* detect if line/page/whole screen is in 24 bit mode
*/
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, r, g, b;
uint8_t val, *p8;
uint32_t *p = (uint32_t *)d;
uint32_t dval;
for(x = 0; x < width; x++, s++, s24++) {
if (be32_to_cpu(*cplane) & 0x03000000) {
/* 24-bit direct, BGR order */
p8 = (uint8_t *)s24;
p8++;
b = *p8++;
g = *p8++;
r = *p8;
dval = rgb_to_pixel32(r, g, b);
} else {
/* 8-bit pseudocolor */
val = *s;
dval = s1->palette[val];
}
*p++ = dval;
cplane++;
}
}
/* 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;
DirtyBitmapSnapshot *snap = NULL;
int y, y_start, dd, ds;
uint8_t *d, *s;
assert(surface_bits_per_pixel(surface) == 32);
page = 0;
y_start = -1;
d = surface_data(surface);
s = ts->vram;
dd = surface_stride(surface);
ds = 1024;
snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
memory_region_size(&ts->vram_mem),
DIRTY_MEMORY_VGA);
for (y = 0; y < ts->height; y++, page += ds) {
if (tcx_check_dirty(ts, snap, page, ds)) {
if (y_start < 0)
y_start = y;
tcx_draw_line32(ts, d, s, ts->width);
if (y >= ts->cursy && y < ts->cursy + 32 && ts->cursx < ts->width) {
tcx_draw_cursor32(ts, d, y, ts->width);
}
} else {
if (y_start >= 0) {
/* flush to display */
dpy_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
y_start = -1;
}
}
s += ds;
d += dd;
}
if (y_start >= 0) {
/* flush to display */
dpy_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
g_free(snap);
}
static void tcx24_update_display(void *opaque)
{
TCXState *ts = opaque;
DisplaySurface *surface = qemu_console_surface(ts->con);
ram_addr_t page;
DirtyBitmapSnapshot *snap = NULL;
int y, y_start, dd, ds;
uint8_t *d, *s;
uint32_t *cptr, *s24;
assert(surface_bits_per_pixel(surface) == 32);
page = 0;
y_start = -1;
d = surface_data(surface);
s = ts->vram;
s24 = ts->vram24;
cptr = ts->cplane;
dd = surface_stride(surface);
ds = 1024;
snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
memory_region_size(&ts->vram_mem),
DIRTY_MEMORY_VGA);
for (y = 0; y < ts->height; y++, page += ds) {
if (tcx_check_dirty(ts, snap, page, ds)) {
if (y_start < 0)
y_start = y;
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
if (y >= ts->cursy && y < ts->cursy+32 && ts->cursx < ts->width) {
tcx_draw_cursor32(ts, d, y, ts->width);
}
} 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;
s += ds;
cptr += ds;
s24 += ds;
}
if (y_start >= 0) {
/* flush to display */
dpy_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
g_free(snap);
}
static void tcx_invalidate_display(void *opaque)
{
TCXState *s = opaque;
tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
qemu_console_resize(s->con, s->width, s->height);
}
static void tcx24_invalidate_display(void *opaque)
{
TCXState *s = opaque;
tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
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);
tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
return 0;
}
static const VMStateDescription vmstate_tcx = {
.name ="tcx",
.version_id = 4,
.minimum_version_id = 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, 260);
memset(s->g, 0, 260);
memset(s->b, 0, 260);
s->r[255] = s->g[255] = s->b[255] = 255;
s->r[256] = s->g[256] = s->b[256] = 255;
s->r[258] = s->g[258] = s->b[258] = 255;
update_palette_entries(s, 0, 260);
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;
s->cursx = 0xf000; /* Put cursor off screen */
s->cursy = 0xf000;
}
static uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
unsigned size)
{
TCXState *s = opaque;
uint32_t val = 0;
switch (s->dac_state) {
case 0:
val = s->r[s->dac_index] << 24;
s->dac_state++;
break;
case 1:
val = s->g[s->dac_index] << 24;
s->dac_state++;
break;
case 2:
val = s->b[s->dac_index] << 24;
s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
/* fall through */
default:
s->dac_state = 0;
break;
}
return val;
}
static void tcx_dac_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
TCXState *s = opaque;
unsigned index;
switch (addr) {
case 0: /* Address */
s->dac_index = val >> 24;
s->dac_state = 0;
break;
case 4: /* Pixel colours */
case 12: /* Overlay (cursor) colours */
if (addr & 8) {
index = (s->dac_index & 3) + 256;
} else {
index = s->dac_index;
}
switch (s->dac_state) {
case 0:
s->r[index] = val >> 24;
update_palette_entries(s, index, index + 1);
s->dac_state++;
break;
case 1:
s->g[index] = val >> 24;
update_palette_entries(s, index, index + 1);
s->dac_state++;
break;
case 2:
s->b[index] = val >> 24;
update_palette_entries(s, index, index + 1);
s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
/* fall through */
default:
s->dac_state = 0;
break;
}
break;
default: /* Control registers */
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 tcx_stip_readl(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void tcx_stip_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TCXState *s = opaque;
int i;
uint32_t col;
if (!(addr & 4)) {
s->tmpblit = val;
} else {
addr = (addr >> 3) & 0xfffff;
col = cpu_to_be32(s->tmpblit);
if (s->depth == 24) {
for (i = 0; i < 32; i++) {
if (val & 0x80000000) {
s->vram[addr + i] = s->tmpblit;
s->vram24[addr + i] = col;
}
val <<= 1;
}
} else {
for (i = 0; i < 32; i++) {
if (val & 0x80000000) {
s->vram[addr + i] = s->tmpblit;
}
val <<= 1;
}
}
tcx_set_dirty(s, addr, 32);
}
}
static void tcx_rstip_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TCXState *s = opaque;
int i;
uint32_t col;
if (!(addr & 4)) {
s->tmpblit = val;
} else {
addr = (addr >> 3) & 0xfffff;
col = cpu_to_be32(s->tmpblit);
if (s->depth == 24) {
for (i = 0; i < 32; i++) {
if (val & 0x80000000) {
s->vram[addr + i] = s->tmpblit;
s->vram24[addr + i] = col;
s->cplane[addr + i] = col;
}
val <<= 1;
}
} else {
for (i = 0; i < 32; i++) {
if (val & 0x80000000) {
s->vram[addr + i] = s->tmpblit;
}
val <<= 1;
}
}
tcx_set_dirty(s, addr, 32);
}
}
static const MemoryRegionOps tcx_stip_ops = {
.read = tcx_stip_readl,
.write = tcx_stip_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
.valid = {
.min_access_size = 4,
.max_access_size = 8,
},
};
static const MemoryRegionOps tcx_rstip_ops = {
.read = tcx_stip_readl,
.write = tcx_rstip_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
.valid = {
.min_access_size = 4,
.max_access_size = 8,
},
};
static uint64_t tcx_blit_readl(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void tcx_blit_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TCXState *s = opaque;
uint32_t adsr, len;
int i;
if (!(addr & 4)) {
s->tmpblit = val;
} else {
addr = (addr >> 3) & 0xfffff;
adsr = val & 0xffffff;
len = ((val >> 24) & 0x1f) + 1;
if (adsr == 0xffffff) {
memset(&s->vram[addr], s->tmpblit, len);
if (s->depth == 24) {
val = s->tmpblit & 0xffffff;
val = cpu_to_be32(val);
for (i = 0; i < len; i++) {
s->vram24[addr + i] = val;
}
}
} else {
memcpy(&s->vram[addr], &s->vram[adsr], len);
if (s->depth == 24) {
memcpy(&s->vram24[addr], &s->vram24[adsr], len * 4);
}
}
tcx_set_dirty(s, addr, len);
}
}
static void tcx_rblit_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TCXState *s = opaque;
uint32_t adsr, len;
int i;
if (!(addr & 4)) {
s->tmpblit = val;
} else {
addr = (addr >> 3) & 0xfffff;
adsr = val & 0xffffff;
len = ((val >> 24) & 0x1f) + 1;
if (adsr == 0xffffff) {
memset(&s->vram[addr], s->tmpblit, len);
if (s->depth == 24) {
val = s->tmpblit & 0xffffff;
val = cpu_to_be32(val);
for (i = 0; i < len; i++) {
s->vram24[addr + i] = val;
s->cplane[addr + i] = val;
}
}
} else {
memcpy(&s->vram[addr], &s->vram[adsr], len);
if (s->depth == 24) {
memcpy(&s->vram24[addr], &s->vram24[adsr], len * 4);
memcpy(&s->cplane[addr], &s->cplane[adsr], len * 4);
}
}
tcx_set_dirty(s, addr, len);
}
}
static const MemoryRegionOps tcx_blit_ops = {
.read = tcx_blit_readl,
.write = tcx_blit_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
.valid = {
.min_access_size = 4,
.max_access_size = 8,
},
};
static const MemoryRegionOps tcx_rblit_ops = {
.read = tcx_blit_readl,
.write = tcx_rblit_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
.valid = {
.min_access_size = 4,
.max_access_size = 8,
},
};
static void tcx_invalidate_cursor_position(TCXState *s)
{
int ymin, ymax, start, end;
/* invalidate only near the cursor */
ymin = s->cursy;
if (ymin >= s->height) {
return;
}
ymax = MIN(s->height, ymin + 32);
start = ymin * 1024;
end = ymax * 1024;
tcx_set_dirty(s, start, end - start);
}
static uint64_t tcx_thc_readl(void *opaque, hwaddr addr,
unsigned size)
{
TCXState *s = opaque;
uint64_t val;
if (addr == TCX_THC_MISC) {
val = s->thcmisc | 0x02000000;
} else {
val = 0;
}
return val;
}
static void tcx_thc_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TCXState *s = opaque;
if (addr == TCX_THC_CURSXY) {
tcx_invalidate_cursor_position(s);
s->cursx = val >> 16;
s->cursy = val;
tcx_invalidate_cursor_position(s);
} else if (addr >= TCX_THC_CURSMASK && addr < TCX_THC_CURSMASK + 128) {
s->cursmask[(addr - TCX_THC_CURSMASK) >> 2] = val;
tcx_invalidate_cursor_position(s);
} else if (addr >= TCX_THC_CURSBITS && addr < TCX_THC_CURSBITS + 128) {
s->cursbits[(addr - TCX_THC_CURSBITS) >> 2] = val;
tcx_invalidate_cursor_position(s);
} else if (addr == TCX_THC_MISC) {
s->thcmisc = val;
}
}
static const MemoryRegionOps tcx_thc_ops = {
.read = tcx_thc_readl,
.write = tcx_thc_writel,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static uint64_t tcx_dummy_readl(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void tcx_dummy_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
return;
}
static const MemoryRegionOps tcx_dummy_ops = {
.read = tcx_dummy_readl,
.write = tcx_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 void tcx_initfn(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
TCXState *s = TCX(obj);
memory_region_init_rom_nomigrate(&s->rom, obj, "tcx.prom",
FCODE_MAX_ROM_SIZE, &error_fatal);
sysbus_init_mmio(sbd, &s->rom);
/* 2/STIP : Stippler */
memory_region_init_io(&s->stip, obj, &tcx_stip_ops, s, "tcx.stip",
TCX_STIP_NREGS);
sysbus_init_mmio(sbd, &s->stip);
/* 3/BLIT : Blitter */
memory_region_init_io(&s->blit, obj, &tcx_blit_ops, s, "tcx.blit",
TCX_BLIT_NREGS);
sysbus_init_mmio(sbd, &s->blit);
/* 5/RSTIP : Raw Stippler */
memory_region_init_io(&s->rstip, obj, &tcx_rstip_ops, s, "tcx.rstip",
TCX_RSTIP_NREGS);
sysbus_init_mmio(sbd, &s->rstip);
/* 6/RBLIT : Raw Blitter */
memory_region_init_io(&s->rblit, obj, &tcx_rblit_ops, s, "tcx.rblit",
TCX_RBLIT_NREGS);
sysbus_init_mmio(sbd, &s->rblit);
/* 7/TEC : ??? */
memory_region_init_io(&s->tec, obj, &tcx_dummy_ops, s, "tcx.tec",
TCX_TEC_NREGS);
sysbus_init_mmio(sbd, &s->tec);
/* 8/CMAP : DAC */
memory_region_init_io(&s->dac, obj, &tcx_dac_ops, s, "tcx.dac",
TCX_DAC_NREGS);
sysbus_init_mmio(sbd, &s->dac);
/* 9/THC : Cursor */
memory_region_init_io(&s->thc, obj, &tcx_thc_ops, s, "tcx.thc",
TCX_THC_NREGS);
sysbus_init_mmio(sbd, &s->thc);
/* 11/DHC : ??? */
memory_region_init_io(&s->dhc, obj, &tcx_dummy_ops, s, "tcx.dhc",
TCX_DHC_NREGS);
sysbus_init_mmio(sbd, &s->dhc);
/* 12/ALT : ??? */
memory_region_init_io(&s->alt, obj, &tcx_dummy_ops, s, "tcx.alt",
TCX_ALT_NREGS);
sysbus_init_mmio(sbd, &s->alt);
}
static void tcx_realizefn(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(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_nomigrate(&s->vram_mem, OBJECT(s), "tcx.vram",
s->vram_size * (1 + 4 + 4), &error_fatal);
vmstate_register_ram_global(&s->vram_mem);
memory_region_set_log(&s->vram_mem, true, DIRTY_MEMORY_VGA);
vram_base = memory_region_get_ram_ptr(&s->vram_mem);
/* 10/ROM : FCode ROM */
vmstate_register_ram_global(&s->rom);
fcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, TCX_ROM_FILE);
if (fcode_filename) {
ret = load_image_mr(fcode_filename, &s->rom);
g_free(fcode_filename);
if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
warn_report("tcx: could not load prom '%s'", TCX_ROM_FILE);
}
}
/* 0/DFB8 : 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(sbd, &s->vram_8bit);
vram_offset += size;
vram_base += size;
/* 1/DFB24 : 24bit 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(sbd, &s->vram_24bit);
vram_offset += size;
vram_base += size;
/* 4/RDFB32 : Raw Framebuffer */
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(sbd, &s->vram_cplane);
/* 9/THC24bits : NetBSD writes here even with 8-bit display: dummy */
if (s->depth == 8) {
memory_region_init_io(&s->thc24, OBJECT(s), &tcx_dummy_ops, s,
"tcx.thc24", TCX_THC_NREGS);
sysbus_init_mmio(sbd, &s->thc24);
}
sysbus_init_irq(sbd, &s->irq);
if (s->depth == 8) {
s->con = graphic_console_init(dev, 0, &tcx_ops, s);
} else {
s->con = graphic_console_init(dev, 0, &tcx24_ops, s);
}
s->thcmisc = 0;
qemu_console_resize(s->con, s->width, s->height);
}
static Property tcx_properties[] = {
DEFINE_PROP_UINT32("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);
dc->realize = tcx_realizefn;
dc->reset = tcx_reset;
dc->vmsd = &vmstate_tcx;
device_class_set_props(dc, tcx_properties);
}
static const TypeInfo tcx_info = {
.name = TYPE_TCX,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(TCXState),
.instance_init = tcx_initfn,
.class_init = tcx_class_init,
};
static void tcx_register_types(void)
{
type_register_static(&tcx_info);
}
type_init(tcx_register_types)
Reference in New Issue View Git Blame Copy Permalink