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qemu-e2k/hw/jazz_led.c
Gerd Hoffmann 1673510204 Remove screendump dummy functions. 
The code in console.c verifies whenever a screen_dump function
pointer is present before calling it, so there is no need to supply an
dummy function.  Remove them.  Also report an error to notify the user
that he didn't got a screenshot.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:04 -06:00

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8.6 KiB
C
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/*
* QEMU JAZZ LED emulator.
*
* Copyright (c) 2007-2012 Herve Poussineau
*
* 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 "console.h"
#include "pixel_ops.h"
#include "trace.h"
#include "sysbus.h"
typedef enum {
REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
} screen_state_t;
typedef struct LedState {
SysBusDevice busdev;
MemoryRegion iomem;
uint8_t segments;
DisplayState *ds;
screen_state_t state;
} LedState;
static uint64_t jazz_led_read(void *opaque, target_phys_addr_t addr,
unsigned int size)
{
LedState *s = opaque;
uint8_t val;
val = s->segments;
trace_jazz_led_read(addr, val);
return val;
}
static void jazz_led_write(void *opaque, target_phys_addr_t addr,
uint64_t val, unsigned int size)
{
LedState *s = opaque;
uint8_t new_val = val & 0xff;
trace_jazz_led_write(addr, new_val);
s->segments = new_val;
s->state |= REDRAW_SEGMENTS;
}
static const MemoryRegionOps led_ops = {
.read = jazz_led_read,
.write = jazz_led_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
};
/***********************************************************/
/* jazz_led display */
static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, uint32_t color)
{
uint8_t *d;
int x, bpp;
bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
d = ds_get_data(ds) + ds_get_linesize(ds) * posy + bpp * posx1;
switch(bpp) {
case 1:
for (x = posx1; x <= posx2; x++) {
*((uint8_t *)d) = color;
d++;
}
break;
case 2:
for (x = posx1; x <= posx2; x++) {
*((uint16_t *)d) = color;
d += 2;
}
break;
case 4:
for (x = posx1; x <= posx2; x++) {
*((uint32_t *)d) = color;
d += 4;
}
break;
}
}
static void draw_vertical_line(DisplayState *ds, int posx, int posy1, int posy2, uint32_t color)
{
uint8_t *d;
int y, bpp;
bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
d = ds_get_data(ds) + ds_get_linesize(ds) * posy1 + bpp * posx;
switch(bpp) {
case 1:
for (y = posy1; y <= posy2; y++) {
*((uint8_t *)d) = color;
d += ds_get_linesize(ds);
}
break;
case 2:
for (y = posy1; y <= posy2; y++) {
*((uint16_t *)d) = color;
d += ds_get_linesize(ds);
}
break;
case 4:
for (y = posy1; y <= posy2; y++) {
*((uint32_t *)d) = color;
d += ds_get_linesize(ds);
}
break;
}
}
static void jazz_led_update_display(void *opaque)
{
LedState *s = opaque;
DisplayState *ds = s->ds;
uint8_t *d1;
uint32_t color_segment, color_led;
int y, bpp;
if (s->state & REDRAW_BACKGROUND) {
/* clear screen */
bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
d1 = ds_get_data(ds);
for (y = 0; y < ds_get_height(ds); y++) {
memset(d1, 0x00, ds_get_width(ds) * bpp);
d1 += ds_get_linesize(ds);
}
}
if (s->state & REDRAW_SEGMENTS) {
/* set colors according to bpp */
switch (ds_get_bits_per_pixel(ds)) {
case 8:
color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
break;
case 15:
color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
break;
case 16:
color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
case 24:
color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
break;
case 32:
color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
break;
default:
return;
}
/* display segments */
draw_horizontal_line(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
draw_horizontal_line(ds, 10, 10, 40, (s->segments & 0x80) ? color_segment : 0);
/* display led */
if (!(s->segments & 0x01))
color_led = 0; /* black */
draw_horizontal_line(ds, 68, 50, 50, color_led);
draw_horizontal_line(ds, 69, 49, 51, color_led);
draw_horizontal_line(ds, 70, 48, 52, color_led);
draw_horizontal_line(ds, 71, 49, 51, color_led);
draw_horizontal_line(ds, 72, 50, 50, color_led);
}
s->state = REDRAW_NONE;
dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
}
static void jazz_led_invalidate_display(void *opaque)
{
LedState *s = opaque;
s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
}
static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
{
LedState *s = opaque;
char buf[2];
dpy_cursor(s->ds, -1, -1);
qemu_console_resize(s->ds, 2, 1);
/* TODO: draw the segments */
snprintf(buf, 2, "%02hhx\n", s->segments);
console_write_ch(chardata++, 0x00200100 | buf[0]);
console_write_ch(chardata++, 0x00200100 | buf[1]);
dpy_update(s->ds, 0, 0, 2, 1);
}
static int jazz_led_post_load(void *opaque, int version_id)
{
/* force refresh */
jazz_led_invalidate_display(opaque);
return 0;
}
static const VMStateDescription vmstate_jazz_led = {
.name = "jazz-led",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.post_load = jazz_led_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(segments, LedState),
VMSTATE_END_OF_LIST()
}
};
static int jazz_led_init(SysBusDevice *dev)
{
LedState *s = FROM_SYSBUS(LedState, dev);
memory_region_init_io(&s->iomem, &led_ops, s, "led", 1);
sysbus_init_mmio(dev, &s->iomem);
s->ds = graphic_console_init(jazz_led_update_display,
jazz_led_invalidate_display,
NULL,
jazz_led_text_update, s);
return 0;
}
static void jazz_led_reset(DeviceState *d)
{
LedState *s = DO_UPCAST(LedState, busdev.qdev, d);
s->segments = 0;
s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
qemu_console_resize(s->ds, 60, 80);
}
static void jazz_led_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = jazz_led_init;
dc->desc = "Jazz LED display",
dc->vmsd = &vmstate_jazz_led;
dc->reset = jazz_led_reset;
}
static TypeInfo jazz_led_info = {
.name = "jazz-led",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(LedState),
.class_init = jazz_led_class_init,
};
static void jazz_led_register(void)
{
type_register_static(&jazz_led_info);
}
type_init(jazz_led_register);
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