File:  [Qemu by Fabrice Bellard] / qemu / hw / jazz_led.c
Revision 1.1.1.2 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:52:27 2018 UTC (2 years, 3 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    1: /*
    2:  * QEMU JAZZ LED emulator.
    3:  *
    4:  * Copyright (c) 2007 Hervé Poussineau
    5:  *
    6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
    7:  * of this software and associated documentation files (the "Software"), to deal
    8:  * in the Software without restriction, including without limitation the rights
    9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   10:  * copies of the Software, and to permit persons to whom the Software is
   11:  * furnished to do so, subject to the following conditions:
   12:  *
   13:  * The above copyright notice and this permission notice shall be included in
   14:  * all copies or substantial portions of the Software.
   15:  *
   16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   22:  * THE SOFTWARE.
   23:  */
   24: 
   25: #include "hw.h"
   26: #include "mips.h"
   27: #include "console.h"
   28: #include "pixel_ops.h"
   29: 
   30: //#define DEBUG_LED
   31: 
   32: typedef enum {
   33:     REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
   34: } screen_state_t;
   35: 
   36: typedef struct LedState {
   37:     uint8_t segments;
   38:     DisplayState *ds;
   39:     screen_state_t state;
   40: } LedState;
   41: 
   42: static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
   43: {
   44:     LedState *s = opaque;
   45:     uint32_t val;
   46: 
   47:     switch (addr) {
   48:         case 0:
   49:             val = s->segments;
   50:             break;
   51:         default:
   52: #ifdef DEBUG_LED
   53:             printf("jazz led: invalid read [0x%x]\n", relative_addr);
   54: #endif
   55:             val = 0;
   56:     }
   57: 
   58:     return val;
   59: }
   60: 
   61: static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
   62: {
   63:     uint32_t v;
   64: #ifdef TARGET_WORDS_BIGENDIAN
   65:     v = led_readb(opaque, addr) << 8;
   66:     v |= led_readb(opaque, addr + 1);
   67: #else
   68:     v = led_readb(opaque, addr);
   69:     v |= led_readb(opaque, addr + 1) << 8;
   70: #endif
   71:     return v;
   72: }
   73: 
   74: static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
   75: {
   76:     uint32_t v;
   77: #ifdef TARGET_WORDS_BIGENDIAN
   78:     v = led_readb(opaque, addr) << 24;
   79:     v |= led_readb(opaque, addr + 1) << 16;
   80:     v |= led_readb(opaque, addr + 2) << 8;
   81:     v |= led_readb(opaque, addr + 3);
   82: #else
   83:     v = led_readb(opaque, addr);
   84:     v |= led_readb(opaque, addr + 1) << 8;
   85:     v |= led_readb(opaque, addr + 2) << 16;
   86:     v |= led_readb(opaque, addr + 3) << 24;
   87: #endif
   88:     return v;
   89: }
   90: 
   91: static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
   92: {
   93:     LedState *s = opaque;
   94: 
   95:     switch (addr) {
   96:         case 0:
   97:             s->segments = val;
   98:             s->state |= REDRAW_SEGMENTS;
   99:             break;
  100:         default:
  101: #ifdef DEBUG_LED
  102:             printf("jazz led: invalid write of 0x%02x at [0x%x]\n", val, relative_addr);
  103: #endif
  104:             break;
  105:     }
  106: }
  107: 
  108: static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
  109: {
  110: #ifdef TARGET_WORDS_BIGENDIAN
  111:     led_writeb(opaque, addr, (val >> 8) & 0xff);
  112:     led_writeb(opaque, addr + 1, val & 0xff);
  113: #else
  114:     led_writeb(opaque, addr, val & 0xff);
  115:     led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
  116: #endif
  117: }
  118: 
  119: static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
  120: {
  121: #ifdef TARGET_WORDS_BIGENDIAN
  122:     led_writeb(opaque, addr, (val >> 24) & 0xff);
  123:     led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
  124:     led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
  125:     led_writeb(opaque, addr + 3, val & 0xff);
  126: #else
  127:     led_writeb(opaque, addr, val & 0xff);
  128:     led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
  129:     led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
  130:     led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
  131: #endif
  132: }
  133: 
  134: static CPUReadMemoryFunc *led_read[3] = {
  135:     led_readb,
  136:     led_readw,
  137:     led_readl,
  138: };
  139: 
  140: static CPUWriteMemoryFunc *led_write[3] = {
  141:     led_writeb,
  142:     led_writew,
  143:     led_writel,
  144: };
  145: 
  146: /***********************************************************/
  147: /* jazz_led display */
  148: 
  149: static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, uint32_t color)
  150: {
  151:     uint8_t *d;
  152:     int x, bpp;
  153: 
  154:     bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
  155:     d = ds_get_data(ds) + ds_get_linesize(ds) * posy + bpp * posx1;
  156:     switch(bpp) {
  157:         case 1:
  158:             for (x = posx1; x <= posx2; x++) {
  159:                 *((uint8_t *)d) = color;
  160:                 d++;
  161:             }
  162:             break;
  163:         case 2:
  164:             for (x = posx1; x <= posx2; x++) {
  165:                 *((uint16_t *)d) = color;
  166:                 d += 2;
  167:             }
  168:             break;
  169:         case 4:
  170:             for (x = posx1; x <= posx2; x++) {
  171:                 *((uint32_t *)d) = color;
  172:                 d += 4;
  173:             }
  174:             break;
  175:     }
  176: }
  177: 
  178: static void draw_vertical_line(DisplayState *ds, int posx, int posy1, int posy2, uint32_t color)
  179: {
  180:     uint8_t *d;
  181:     int y, bpp;
  182: 
  183:     bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
  184:     d = ds_get_data(ds) + ds_get_linesize(ds) * posy1 + bpp * posx;
  185:     switch(bpp) {
  186:         case 1:
  187:             for (y = posy1; y <= posy2; y++) {
  188:                 *((uint8_t *)d) = color;
  189:                 d += ds_get_linesize(ds);
  190:             }
  191:             break;
  192:         case 2:
  193:             for (y = posy1; y <= posy2; y++) {
  194:                 *((uint16_t *)d) = color;
  195:                 d += ds_get_linesize(ds);
  196:             }
  197:             break;
  198:         case 4:
  199:             for (y = posy1; y <= posy2; y++) {
  200:                 *((uint32_t *)d) = color;
  201:                 d += ds_get_linesize(ds);
  202:             }
  203:             break;
  204:     }
  205: }
  206: 
  207: static void jazz_led_update_display(void *opaque)
  208: {
  209:     LedState *s = opaque;
  210:     DisplayState *ds = s->ds;
  211:     uint8_t *d1;
  212:     uint32_t color_segment, color_led;
  213:     int y, bpp;
  214: 
  215:     if (s->state & REDRAW_BACKGROUND) {
  216:         /* clear screen */
  217:         bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
  218:         d1 = ds_get_data(ds);
  219:         for (y = 0; y < ds_get_height(ds); y++) {
  220:             memset(d1, 0x00, ds_get_width(ds) * bpp);
  221:             d1 += ds_get_linesize(ds);
  222:         }
  223:     }
  224: 
  225:     if (s->state & REDRAW_SEGMENTS) {
  226:         /* set colors according to bpp */
  227:         switch (ds_get_bits_per_pixel(ds)) {
  228:             case 8:
  229:                 color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
  230:                 color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
  231:                 break;
  232:             case 15:
  233:                 color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
  234:                 color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
  235:                 break;
  236:             case 16:
  237:                 color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
  238:                 color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
  239:             case 24:
  240:                 color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
  241:                 color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
  242:                 break;
  243:             case 32:
  244:                 color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
  245:                 color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
  246:                 break;
  247:             default:
  248:                 return;
  249:         }
  250: 
  251:         /* display segments */
  252:         draw_horizontal_line(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
  253:         draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
  254:         draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
  255:         draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
  256:         draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
  257:         draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
  258:         draw_horizontal_line(ds, 10, 10, 40, (s->segments & 0x80) ? color_segment : 0);
  259: 
  260:         /* display led */
  261:         if (!(s->segments & 0x01))
  262:             color_led = 0; /* black */
  263:         draw_horizontal_line(ds, 68, 50, 50, color_led);
  264:         draw_horizontal_line(ds, 69, 49, 51, color_led);
  265:         draw_horizontal_line(ds, 70, 48, 52, color_led);
  266:         draw_horizontal_line(ds, 71, 49, 51, color_led);
  267:         draw_horizontal_line(ds, 72, 50, 50, color_led);
  268:     }
  269: 
  270:     s->state = REDRAW_NONE;
  271:     dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
  272: }
  273: 
  274: static void jazz_led_invalidate_display(void *opaque)
  275: {
  276:     LedState *s = opaque;
  277:     s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
  278: }
  279: 
  280: static void jazz_led_screen_dump(void *opaque, const char *filename)
  281: {
  282:     printf("jazz_led_screen_dump() not implemented\n");
  283: }
  284: 
  285: static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
  286: {
  287:     LedState *s = opaque;
  288:     char buf[2];
  289: 
  290:     dpy_cursor(s->ds, -1, -1);
  291:     qemu_console_resize(s->ds, 2, 1);
  292: 
  293:     /* TODO: draw the segments */
  294:     snprintf(buf, 2, "%02hhx\n", s->segments);
  295:     console_write_ch(chardata++, 0x00200100 | buf[0]);
  296:     console_write_ch(chardata++, 0x00200100 | buf[1]);
  297: 
  298:     dpy_update(s->ds, 0, 0, 2, 1);
  299: }
  300: 
  301: void jazz_led_init(target_phys_addr_t base)
  302: {
  303:     LedState *s;
  304:     int io;
  305: 
  306:     s = qemu_mallocz(sizeof(LedState));
  307: 
  308:     s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
  309: 
  310:     io = cpu_register_io_memory(0, led_read, led_write, s);
  311:     cpu_register_physical_memory(base, 1, io);
  312: 
  313:     s->ds = graphic_console_init(jazz_led_update_display,
  314:                                  jazz_led_invalidate_display,
  315:                                  jazz_led_screen_dump,
  316:                                  jazz_led_text_update, s);
  317:     qemu_console_resize(s->ds, 60, 80);
  318: }

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