312 lines
9.2 KiB
C
312 lines
9.2 KiB
C
/*
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* QEMU JAZZ LED emulator.
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*
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* Copyright (c) 2007-2012 Herve Poussineau
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h"
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#include "ui/console.h"
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#include "ui/pixel_ops.h"
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#include "trace.h"
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#include "hw/sysbus.h"
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typedef enum {
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REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
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} screen_state_t;
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#define TYPE_JAZZ_LED "jazz-led"
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#define JAZZ_LED(obj) OBJECT_CHECK(LedState, (obj), TYPE_JAZZ_LED)
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typedef struct LedState {
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SysBusDevice parent_obj;
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MemoryRegion iomem;
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uint8_t segments;
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QemuConsole *con;
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screen_state_t state;
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} LedState;
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static uint64_t jazz_led_read(void *opaque, hwaddr addr,
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unsigned int size)
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{
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LedState *s = opaque;
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uint8_t val;
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val = s->segments;
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trace_jazz_led_read(addr, val);
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return val;
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}
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static void jazz_led_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned int size)
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{
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LedState *s = opaque;
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uint8_t new_val = val & 0xff;
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trace_jazz_led_write(addr, new_val);
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s->segments = new_val;
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s->state |= REDRAW_SEGMENTS;
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}
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static const MemoryRegionOps led_ops = {
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.read = jazz_led_read,
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.write = jazz_led_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.impl.min_access_size = 1,
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.impl.max_access_size = 1,
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};
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/***********************************************************/
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/* jazz_led display */
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static void draw_horizontal_line(DisplaySurface *ds,
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int posy, int posx1, int posx2,
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uint32_t color)
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{
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uint8_t *d;
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int x, bpp;
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bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
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d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1;
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switch(bpp) {
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case 1:
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for (x = posx1; x <= posx2; x++) {
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*((uint8_t *)d) = color;
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d++;
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}
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break;
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case 2:
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for (x = posx1; x <= posx2; x++) {
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*((uint16_t *)d) = color;
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d += 2;
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}
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break;
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case 4:
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for (x = posx1; x <= posx2; x++) {
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*((uint32_t *)d) = color;
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d += 4;
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}
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break;
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}
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}
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static void draw_vertical_line(DisplaySurface *ds,
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int posx, int posy1, int posy2,
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uint32_t color)
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{
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uint8_t *d;
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int y, bpp;
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bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
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d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx;
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switch(bpp) {
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case 1:
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for (y = posy1; y <= posy2; y++) {
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*((uint8_t *)d) = color;
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d += surface_stride(ds);
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}
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break;
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case 2:
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for (y = posy1; y <= posy2; y++) {
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*((uint16_t *)d) = color;
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d += surface_stride(ds);
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}
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break;
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case 4:
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for (y = posy1; y <= posy2; y++) {
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*((uint32_t *)d) = color;
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d += surface_stride(ds);
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}
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break;
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}
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}
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static void jazz_led_update_display(void *opaque)
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{
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LedState *s = opaque;
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DisplaySurface *surface = qemu_console_surface(s->con);
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uint8_t *d1;
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uint32_t color_segment, color_led;
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int y, bpp;
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if (s->state & REDRAW_BACKGROUND) {
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/* clear screen */
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bpp = (surface_bits_per_pixel(surface) + 7) >> 3;
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d1 = surface_data(surface);
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for (y = 0; y < surface_height(surface); y++) {
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memset(d1, 0x00, surface_width(surface) * bpp);
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d1 += surface_stride(surface);
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}
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}
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if (s->state & REDRAW_SEGMENTS) {
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/* set colors according to bpp */
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switch (surface_bits_per_pixel(surface)) {
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case 8:
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color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
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color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
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break;
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case 15:
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color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
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color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
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break;
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case 16:
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color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
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color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
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case 24:
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color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
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color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
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break;
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case 32:
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color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
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color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
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break;
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default:
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return;
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}
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/* display segments */
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draw_horizontal_line(surface, 40, 10, 40,
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(s->segments & 0x02) ? color_segment : 0);
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draw_vertical_line(surface, 10, 10, 40,
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(s->segments & 0x04) ? color_segment : 0);
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draw_vertical_line(surface, 10, 40, 70,
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(s->segments & 0x08) ? color_segment : 0);
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draw_horizontal_line(surface, 70, 10, 40,
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(s->segments & 0x10) ? color_segment : 0);
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draw_vertical_line(surface, 40, 40, 70,
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(s->segments & 0x20) ? color_segment : 0);
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draw_vertical_line(surface, 40, 10, 40,
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(s->segments & 0x40) ? color_segment : 0);
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draw_horizontal_line(surface, 10, 10, 40,
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(s->segments & 0x80) ? color_segment : 0);
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/* display led */
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if (!(s->segments & 0x01))
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color_led = 0; /* black */
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draw_horizontal_line(surface, 68, 50, 50, color_led);
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draw_horizontal_line(surface, 69, 49, 51, color_led);
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draw_horizontal_line(surface, 70, 48, 52, color_led);
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draw_horizontal_line(surface, 71, 49, 51, color_led);
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draw_horizontal_line(surface, 72, 50, 50, color_led);
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}
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s->state = REDRAW_NONE;
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dpy_gfx_update(s->con, 0, 0,
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surface_width(surface), surface_height(surface));
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}
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static void jazz_led_invalidate_display(void *opaque)
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{
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LedState *s = opaque;
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s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
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}
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static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
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{
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LedState *s = opaque;
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char buf[2];
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dpy_text_cursor(s->con, -1, -1);
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qemu_console_resize(s->con, 2, 1);
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/* TODO: draw the segments */
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snprintf(buf, 2, "%02hhx\n", s->segments);
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console_write_ch(chardata++, 0x00200100 | buf[0]);
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console_write_ch(chardata++, 0x00200100 | buf[1]);
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dpy_text_update(s->con, 0, 0, 2, 1);
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}
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static int jazz_led_post_load(void *opaque, int version_id)
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{
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/* force refresh */
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jazz_led_invalidate_display(opaque);
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return 0;
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}
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static const VMStateDescription vmstate_jazz_led = {
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.name = "jazz-led",
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.version_id = 0,
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.minimum_version_id = 0,
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.minimum_version_id_old = 0,
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.post_load = jazz_led_post_load,
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.fields = (VMStateField[]) {
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VMSTATE_UINT8(segments, LedState),
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VMSTATE_END_OF_LIST()
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}
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};
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static const GraphicHwOps jazz_led_ops = {
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.invalidate = jazz_led_invalidate_display,
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.gfx_update = jazz_led_update_display,
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.text_update = jazz_led_text_update,
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};
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static int jazz_led_init(SysBusDevice *dev)
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{
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LedState *s = JAZZ_LED(dev);
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memory_region_init_io(&s->iomem, OBJECT(s), &led_ops, s, "led", 1);
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sysbus_init_mmio(dev, &s->iomem);
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s->con = graphic_console_init(DEVICE(dev), 0, &jazz_led_ops, s);
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return 0;
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}
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static void jazz_led_reset(DeviceState *d)
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{
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LedState *s = JAZZ_LED(d);
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s->segments = 0;
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s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
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qemu_console_resize(s->con, 60, 80);
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}
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static void jazz_led_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
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k->init = jazz_led_init;
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dc->desc = "Jazz LED display",
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dc->vmsd = &vmstate_jazz_led;
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dc->reset = jazz_led_reset;
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}
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static const TypeInfo jazz_led_info = {
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.name = TYPE_JAZZ_LED,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(LedState),
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.class_init = jazz_led_class_init,
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};
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static void jazz_led_register(void)
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{
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type_register_static(&jazz_led_info);
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}
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type_init(jazz_led_register);
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