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