319 lines
9.3 KiB
C
319 lines
9.3 KiB
C
/*
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* QEMU JAZZ LED emulator.
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*
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* Copyright (c) 2007 Hervé 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 "hw.h"
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#include "mips.h"
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#include "console.h"
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#include "pixel_ops.h"
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//#define DEBUG_LED
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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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typedef struct LedState {
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uint8_t segments;
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DisplayState *ds;
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screen_state_t state;
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} LedState;
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static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
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{
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LedState *s = opaque;
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uint32_t val;
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switch (addr) {
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case 0:
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val = s->segments;
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break;
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default:
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#ifdef DEBUG_LED
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printf("jazz led: invalid read [0x%x]\n", relative_addr);
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#endif
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val = 0;
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}
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return val;
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}
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static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
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{
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uint32_t v;
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#ifdef TARGET_WORDS_BIGENDIAN
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v = led_readb(opaque, addr) << 8;
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v |= led_readb(opaque, addr + 1);
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#else
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v = led_readb(opaque, addr);
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v |= led_readb(opaque, addr + 1) << 8;
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#endif
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return v;
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}
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static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
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{
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uint32_t v;
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#ifdef TARGET_WORDS_BIGENDIAN
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v = led_readb(opaque, addr) << 24;
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v |= led_readb(opaque, addr + 1) << 16;
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v |= led_readb(opaque, addr + 2) << 8;
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v |= led_readb(opaque, addr + 3);
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#else
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v = led_readb(opaque, addr);
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v |= led_readb(opaque, addr + 1) << 8;
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v |= led_readb(opaque, addr + 2) << 16;
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v |= led_readb(opaque, addr + 3) << 24;
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#endif
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return v;
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}
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static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
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{
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LedState *s = opaque;
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switch (addr) {
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case 0:
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s->segments = val;
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s->state |= REDRAW_SEGMENTS;
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break;
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default:
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#ifdef DEBUG_LED
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printf("jazz led: invalid write of 0x%02x at [0x%x]\n", val, relative_addr);
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#endif
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break;
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}
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}
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static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
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{
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#ifdef TARGET_WORDS_BIGENDIAN
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led_writeb(opaque, addr, (val >> 8) & 0xff);
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led_writeb(opaque, addr + 1, val & 0xff);
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#else
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led_writeb(opaque, addr, val & 0xff);
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led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
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#endif
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}
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static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
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{
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#ifdef TARGET_WORDS_BIGENDIAN
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led_writeb(opaque, addr, (val >> 24) & 0xff);
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led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
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led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
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led_writeb(opaque, addr + 3, val & 0xff);
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#else
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led_writeb(opaque, addr, val & 0xff);
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led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
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led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
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led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
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#endif
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}
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static CPUReadMemoryFunc * const led_read[3] = {
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led_readb,
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led_readw,
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led_readl,
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};
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static CPUWriteMemoryFunc * const led_write[3] = {
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led_writeb,
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led_writew,
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led_writel,
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};
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/***********************************************************/
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/* jazz_led display */
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static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, 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 = (ds_get_bits_per_pixel(ds) + 7) >> 3;
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d = ds_get_data(ds) + ds_get_linesize(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(DisplayState *ds, int posx, int posy1, int posy2, 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 = (ds_get_bits_per_pixel(ds) + 7) >> 3;
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d = ds_get_data(ds) + ds_get_linesize(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 += ds_get_linesize(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 += ds_get_linesize(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 += ds_get_linesize(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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DisplayState *ds = s->ds;
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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 = (ds_get_bits_per_pixel(ds) + 7) >> 3;
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d1 = ds_get_data(ds);
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for (y = 0; y < ds_get_height(ds); y++) {
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memset(d1, 0x00, ds_get_width(ds) * bpp);
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d1 += ds_get_linesize(ds);
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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 (ds_get_bits_per_pixel(ds)) {
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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(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
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draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
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draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
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draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
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draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
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draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
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draw_horizontal_line(ds, 10, 10, 40, (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(ds, 68, 50, 50, color_led);
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draw_horizontal_line(ds, 69, 49, 51, color_led);
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draw_horizontal_line(ds, 70, 48, 52, color_led);
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draw_horizontal_line(ds, 71, 49, 51, color_led);
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draw_horizontal_line(ds, 72, 50, 50, color_led);
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}
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s->state = REDRAW_NONE;
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dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
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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_screen_dump(void *opaque, const char *filename)
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{
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printf("jazz_led_screen_dump() not implemented\n");
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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_cursor(s->ds, -1, -1);
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qemu_console_resize(s->ds, 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_update(s->ds, 0, 0, 2, 1);
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}
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void jazz_led_init(target_phys_addr_t base)
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{
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LedState *s;
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int io;
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s = qemu_mallocz(sizeof(LedState));
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s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
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io = cpu_register_io_memory(led_read, led_write, s);
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cpu_register_physical_memory(base, 1, io);
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s->ds = graphic_console_init(jazz_led_update_display,
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jazz_led_invalidate_display,
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jazz_led_screen_dump,
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jazz_led_text_update, s);
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qemu_console_resize(s->ds, 60, 80);
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}
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