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qemu/hw/jazz_led.c
Alexander Graf 2507c12ab0 Add endianness as io mem parameter 
As stated before, devices can be little, big or native endian. The
target endianness is not of their concern, so we need to push things
down a level.

This patch adds a parameter to cpu_register_io_memory that allows a
device to choose its endianness. For now, all devices simply choose
native endian, because that's the same behavior as before.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-11 15:24:25 +00:00

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9.7 KiB
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/*
* QEMU JAZZ LED emulator.
*
* Copyright (c) 2007 Hervé 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 "hw.h"
#include "mips.h"
#include "console.h"
#include "pixel_ops.h"
//#define DEBUG_LED
#ifdef DEBUG_LED
#define DPRINTF(fmt, ...) \
do { printf("jazz led: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) do {} while (0)
#endif
#define BADF(fmt, ...) \
do { fprintf(stderr, "jazz led ERROR: " fmt , ## __VA_ARGS__);} while (0)
typedef enum {
REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
} screen_state_t;
typedef struct LedState {
uint8_t segments;
DisplayState *ds;
screen_state_t state;
} LedState;
static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
{
LedState *s = opaque;
uint32_t val;
switch (addr) {
case 0:
val = s->segments;
break;
default:
BADF("invalid read at [" TARGET_FMT_plx "]\n", addr);
val = 0;
}
DPRINTF("read addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
return val;
}
static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
{
uint32_t v;
#ifdef TARGET_WORDS_BIGENDIAN
v = led_readb(opaque, addr) << 8;
v |= led_readb(opaque, addr + 1);
#else
v = led_readb(opaque, addr);
v |= led_readb(opaque, addr + 1) << 8;
#endif
return v;
}
static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
{
uint32_t v;
#ifdef TARGET_WORDS_BIGENDIAN
v = led_readb(opaque, addr) << 24;
v |= led_readb(opaque, addr + 1) << 16;
v |= led_readb(opaque, addr + 2) << 8;
v |= led_readb(opaque, addr + 3);
#else
v = led_readb(opaque, addr);
v |= led_readb(opaque, addr + 1) << 8;
v |= led_readb(opaque, addr + 2) << 16;
v |= led_readb(opaque, addr + 3) << 24;
#endif
return v;
}
static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
LedState *s = opaque;
DPRINTF("write addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
switch (addr) {
case 0:
s->segments = val;
s->state |= REDRAW_SEGMENTS;
break;
default:
BADF("invalid write of 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
break;
}
}
static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
led_writeb(opaque, addr, (val >> 8) & 0xff);
led_writeb(opaque, addr + 1, val & 0xff);
#else
led_writeb(opaque, addr, val & 0xff);
led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
#endif
}
static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
led_writeb(opaque, addr, (val >> 24) & 0xff);
led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
led_writeb(opaque, addr + 3, val & 0xff);
#else
led_writeb(opaque, addr, val & 0xff);
led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
#endif
}
static CPUReadMemoryFunc * const led_read[3] = {
led_readb,
led_readw,
led_readl,
};
static CPUWriteMemoryFunc * const led_write[3] = {
led_writeb,
led_writew,
led_writel,
};
/***********************************************************/
/* 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_screen_dump(void *opaque, const char *filename)
{
printf("jazz_led_screen_dump() not implemented\n");
}
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);
}
void jazz_led_init(target_phys_addr_t base)
{
LedState *s;
int io;
s = qemu_mallocz(sizeof(LedState));
s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
io = cpu_register_io_memory(led_read, led_write, s,
DEVICE_NATIVE_ENDIAN);
cpu_register_physical_memory(base, 1, io);
s->ds = graphic_console_init(jazz_led_update_display,
jazz_led_invalidate_display,
jazz_led_screen_dump,
jazz_led_text_update, s);
qemu_console_resize(s->ds, 60, 80);
}
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