1 /* 2 * QEMU JAZZ LED emulator. 3 * 4 * Copyright (c) 2007-2012 Herve 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 "qemu/osdep.h" 26 #include "qemu/module.h" 27 #include "ui/console.h" 28 #include "ui/pixel_ops.h" 29 #include "trace.h" 30 #include "hw/sysbus.h" 31 #include "migration/vmstate.h" 32 33 typedef enum { 34 REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2, 35 } screen_state_t; 36 37 #define TYPE_JAZZ_LED "jazz-led" 38 #define JAZZ_LED(obj) OBJECT_CHECK(LedState, (obj), TYPE_JAZZ_LED) 39 40 typedef struct LedState { 41 SysBusDevice parent_obj; 42 43 MemoryRegion iomem; 44 uint8_t segments; 45 QemuConsole *con; 46 screen_state_t state; 47 } LedState; 48 49 static uint64_t jazz_led_read(void *opaque, hwaddr addr, 50 unsigned int size) 51 { 52 LedState *s = opaque; 53 uint8_t val; 54 55 val = s->segments; 56 trace_jazz_led_read(addr, val); 57 58 return val; 59 } 60 61 static void jazz_led_write(void *opaque, hwaddr addr, 62 uint64_t val, unsigned int size) 63 { 64 LedState *s = opaque; 65 uint8_t new_val = val & 0xff; 66 67 trace_jazz_led_write(addr, new_val); 68 69 s->segments = new_val; 70 s->state |= REDRAW_SEGMENTS; 71 } 72 73 static const MemoryRegionOps led_ops = { 74 .read = jazz_led_read, 75 .write = jazz_led_write, 76 .endianness = DEVICE_NATIVE_ENDIAN, 77 .impl.min_access_size = 1, 78 .impl.max_access_size = 1, 79 }; 80 81 /***********************************************************/ 82 /* jazz_led display */ 83 84 static void draw_horizontal_line(DisplaySurface *ds, 85 int posy, int posx1, int posx2, 86 uint32_t color) 87 { 88 uint8_t *d; 89 int x, bpp; 90 91 bpp = (surface_bits_per_pixel(ds) + 7) >> 3; 92 d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1; 93 switch (bpp) { 94 case 1: 95 for (x = posx1; x <= posx2; x++) { 96 *((uint8_t *)d) = color; 97 d++; 98 } 99 break; 100 case 2: 101 for (x = posx1; x <= posx2; x++) { 102 *((uint16_t *)d) = color; 103 d += 2; 104 } 105 break; 106 case 4: 107 for (x = posx1; x <= posx2; x++) { 108 *((uint32_t *)d) = color; 109 d += 4; 110 } 111 break; 112 } 113 } 114 115 static void draw_vertical_line(DisplaySurface *ds, 116 int posx, int posy1, int posy2, 117 uint32_t color) 118 { 119 uint8_t *d; 120 int y, bpp; 121 122 bpp = (surface_bits_per_pixel(ds) + 7) >> 3; 123 d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx; 124 switch (bpp) { 125 case 1: 126 for (y = posy1; y <= posy2; y++) { 127 *((uint8_t *)d) = color; 128 d += surface_stride(ds); 129 } 130 break; 131 case 2: 132 for (y = posy1; y <= posy2; y++) { 133 *((uint16_t *)d) = color; 134 d += surface_stride(ds); 135 } 136 break; 137 case 4: 138 for (y = posy1; y <= posy2; y++) { 139 *((uint32_t *)d) = color; 140 d += surface_stride(ds); 141 } 142 break; 143 } 144 } 145 146 static void jazz_led_update_display(void *opaque) 147 { 148 LedState *s = opaque; 149 DisplaySurface *surface = qemu_console_surface(s->con); 150 uint8_t *d1; 151 uint32_t color_segment, color_led; 152 int y, bpp; 153 154 if (s->state & REDRAW_BACKGROUND) { 155 /* clear screen */ 156 bpp = (surface_bits_per_pixel(surface) + 7) >> 3; 157 d1 = surface_data(surface); 158 for (y = 0; y < surface_height(surface); y++) { 159 memset(d1, 0x00, surface_width(surface) * bpp); 160 d1 += surface_stride(surface); 161 } 162 } 163 164 if (s->state & REDRAW_SEGMENTS) { 165 /* set colors according to bpp */ 166 switch (surface_bits_per_pixel(surface)) { 167 case 8: 168 color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa); 169 color_led = rgb_to_pixel8(0x00, 0xff, 0x00); 170 break; 171 case 15: 172 color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa); 173 color_led = rgb_to_pixel15(0x00, 0xff, 0x00); 174 break; 175 case 16: 176 color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa); 177 color_led = rgb_to_pixel16(0x00, 0xff, 0x00); 178 break; 179 case 24: 180 color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa); 181 color_led = rgb_to_pixel24(0x00, 0xff, 0x00); 182 break; 183 case 32: 184 color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa); 185 color_led = rgb_to_pixel32(0x00, 0xff, 0x00); 186 break; 187 default: 188 return; 189 } 190 191 /* display segments */ 192 draw_horizontal_line(surface, 40, 10, 40, 193 (s->segments & 0x02) ? color_segment : 0); 194 draw_vertical_line(surface, 10, 10, 40, 195 (s->segments & 0x04) ? color_segment : 0); 196 draw_vertical_line(surface, 10, 40, 70, 197 (s->segments & 0x08) ? color_segment : 0); 198 draw_horizontal_line(surface, 70, 10, 40, 199 (s->segments & 0x10) ? color_segment : 0); 200 draw_vertical_line(surface, 40, 40, 70, 201 (s->segments & 0x20) ? color_segment : 0); 202 draw_vertical_line(surface, 40, 10, 40, 203 (s->segments & 0x40) ? color_segment : 0); 204 draw_horizontal_line(surface, 10, 10, 40, 205 (s->segments & 0x80) ? color_segment : 0); 206 207 /* display led */ 208 if (!(s->segments & 0x01)) { 209 color_led = 0; /* black */ 210 } 211 draw_horizontal_line(surface, 68, 50, 50, color_led); 212 draw_horizontal_line(surface, 69, 49, 51, color_led); 213 draw_horizontal_line(surface, 70, 48, 52, color_led); 214 draw_horizontal_line(surface, 71, 49, 51, color_led); 215 draw_horizontal_line(surface, 72, 50, 50, color_led); 216 } 217 218 s->state = REDRAW_NONE; 219 dpy_gfx_update_full(s->con); 220 } 221 222 static void jazz_led_invalidate_display(void *opaque) 223 { 224 LedState *s = opaque; 225 s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND; 226 } 227 228 static void jazz_led_text_update(void *opaque, console_ch_t *chardata) 229 { 230 LedState *s = opaque; 231 char buf[3]; 232 233 dpy_text_cursor(s->con, -1, -1); 234 qemu_console_resize(s->con, 2, 1); 235 236 /* TODO: draw the segments */ 237 snprintf(buf, 3, "%02hhx", s->segments); 238 console_write_ch(chardata++, ATTR2CHTYPE(buf[0], QEMU_COLOR_BLUE, 239 QEMU_COLOR_BLACK, 1)); 240 console_write_ch(chardata++, ATTR2CHTYPE(buf[1], QEMU_COLOR_BLUE, 241 QEMU_COLOR_BLACK, 1)); 242 243 dpy_text_update(s->con, 0, 0, 2, 1); 244 } 245 246 static int jazz_led_post_load(void *opaque, int version_id) 247 { 248 /* force refresh */ 249 jazz_led_invalidate_display(opaque); 250 251 return 0; 252 } 253 254 static const VMStateDescription vmstate_jazz_led = { 255 .name = "jazz-led", 256 .version_id = 0, 257 .minimum_version_id = 0, 258 .post_load = jazz_led_post_load, 259 .fields = (VMStateField[]) { 260 VMSTATE_UINT8(segments, LedState), 261 VMSTATE_END_OF_LIST() 262 } 263 }; 264 265 static const GraphicHwOps jazz_led_ops = { 266 .invalidate = jazz_led_invalidate_display, 267 .gfx_update = jazz_led_update_display, 268 .text_update = jazz_led_text_update, 269 }; 270 271 static void jazz_led_init(Object *obj) 272 { 273 LedState *s = JAZZ_LED(obj); 274 SysBusDevice *dev = SYS_BUS_DEVICE(obj); 275 276 memory_region_init_io(&s->iomem, obj, &led_ops, s, "led", 1); 277 sysbus_init_mmio(dev, &s->iomem); 278 } 279 280 static void jazz_led_realize(DeviceState *dev, Error **errp) 281 { 282 LedState *s = JAZZ_LED(dev); 283 284 s->con = graphic_console_init(dev, 0, &jazz_led_ops, s); 285 } 286 287 static void jazz_led_reset(DeviceState *d) 288 { 289 LedState *s = JAZZ_LED(d); 290 291 s->segments = 0; 292 s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND; 293 qemu_console_resize(s->con, 60, 80); 294 } 295 296 static void jazz_led_class_init(ObjectClass *klass, void *data) 297 { 298 DeviceClass *dc = DEVICE_CLASS(klass); 299 300 dc->desc = "Jazz LED display", 301 dc->vmsd = &vmstate_jazz_led; 302 dc->reset = jazz_led_reset; 303 dc->realize = jazz_led_realize; 304 } 305 306 static const TypeInfo jazz_led_info = { 307 .name = TYPE_JAZZ_LED, 308 .parent = TYPE_SYS_BUS_DEVICE, 309 .instance_size = sizeof(LedState), 310 .instance_init = jazz_led_init, 311 .class_init = jazz_led_class_init, 312 }; 313 314 static void jazz_led_register(void) 315 { 316 type_register_static(&jazz_led_info); 317 } 318 319 type_init(jazz_led_register); 320