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-common.h" 26 #include "ui/console.h" 27 #include "ui/pixel_ops.h" 28 #include "trace.h" 29 #include "hw/sysbus.h" 30 31 typedef enum { 32 REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2, 33 } screen_state_t; 34 35 #define TYPE_JAZZ_LED "jazz-led" 36 #define JAZZ_LED(obj) OBJECT_CHECK(LedState, (obj), TYPE_JAZZ_LED) 37 38 typedef struct LedState { 39 SysBusDevice parent_obj; 40 41 MemoryRegion iomem; 42 uint8_t segments; 43 QemuConsole *con; 44 screen_state_t state; 45 } LedState; 46 47 static uint64_t jazz_led_read(void *opaque, hwaddr addr, 48 unsigned int size) 49 { 50 LedState *s = opaque; 51 uint8_t val; 52 53 val = s->segments; 54 trace_jazz_led_read(addr, val); 55 56 return val; 57 } 58 59 static void jazz_led_write(void *opaque, hwaddr addr, 60 uint64_t val, unsigned int size) 61 { 62 LedState *s = opaque; 63 uint8_t new_val = val & 0xff; 64 65 trace_jazz_led_write(addr, new_val); 66 67 s->segments = new_val; 68 s->state |= REDRAW_SEGMENTS; 69 } 70 71 static const MemoryRegionOps led_ops = { 72 .read = jazz_led_read, 73 .write = jazz_led_write, 74 .endianness = DEVICE_NATIVE_ENDIAN, 75 .impl.min_access_size = 1, 76 .impl.max_access_size = 1, 77 }; 78 79 /***********************************************************/ 80 /* jazz_led display */ 81 82 static void draw_horizontal_line(DisplaySurface *ds, 83 int posy, int posx1, int posx2, 84 uint32_t color) 85 { 86 uint8_t *d; 87 int x, bpp; 88 89 bpp = (surface_bits_per_pixel(ds) + 7) >> 3; 90 d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1; 91 switch(bpp) { 92 case 1: 93 for (x = posx1; x <= posx2; x++) { 94 *((uint8_t *)d) = color; 95 d++; 96 } 97 break; 98 case 2: 99 for (x = posx1; x <= posx2; x++) { 100 *((uint16_t *)d) = color; 101 d += 2; 102 } 103 break; 104 case 4: 105 for (x = posx1; x <= posx2; x++) { 106 *((uint32_t *)d) = color; 107 d += 4; 108 } 109 break; 110 } 111 } 112 113 static void draw_vertical_line(DisplaySurface *ds, 114 int posx, int posy1, int posy2, 115 uint32_t color) 116 { 117 uint8_t *d; 118 int y, bpp; 119 120 bpp = (surface_bits_per_pixel(ds) + 7) >> 3; 121 d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx; 122 switch(bpp) { 123 case 1: 124 for (y = posy1; y <= posy2; y++) { 125 *((uint8_t *)d) = color; 126 d += surface_stride(ds); 127 } 128 break; 129 case 2: 130 for (y = posy1; y <= posy2; y++) { 131 *((uint16_t *)d) = color; 132 d += surface_stride(ds); 133 } 134 break; 135 case 4: 136 for (y = posy1; y <= posy2; y++) { 137 *((uint32_t *)d) = color; 138 d += surface_stride(ds); 139 } 140 break; 141 } 142 } 143 144 static void jazz_led_update_display(void *opaque) 145 { 146 LedState *s = opaque; 147 DisplaySurface *surface = qemu_console_surface(s->con); 148 uint8_t *d1; 149 uint32_t color_segment, color_led; 150 int y, bpp; 151 152 if (s->state & REDRAW_BACKGROUND) { 153 /* clear screen */ 154 bpp = (surface_bits_per_pixel(surface) + 7) >> 3; 155 d1 = surface_data(surface); 156 for (y = 0; y < surface_height(surface); y++) { 157 memset(d1, 0x00, surface_width(surface) * bpp); 158 d1 += surface_stride(surface); 159 } 160 } 161 162 if (s->state & REDRAW_SEGMENTS) { 163 /* set colors according to bpp */ 164 switch (surface_bits_per_pixel(surface)) { 165 case 8: 166 color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa); 167 color_led = rgb_to_pixel8(0x00, 0xff, 0x00); 168 break; 169 case 15: 170 color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa); 171 color_led = rgb_to_pixel15(0x00, 0xff, 0x00); 172 break; 173 case 16: 174 color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa); 175 color_led = rgb_to_pixel16(0x00, 0xff, 0x00); 176 case 24: 177 color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa); 178 color_led = rgb_to_pixel24(0x00, 0xff, 0x00); 179 break; 180 case 32: 181 color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa); 182 color_led = rgb_to_pixel32(0x00, 0xff, 0x00); 183 break; 184 default: 185 return; 186 } 187 188 /* display segments */ 189 draw_horizontal_line(surface, 40, 10, 40, 190 (s->segments & 0x02) ? color_segment : 0); 191 draw_vertical_line(surface, 10, 10, 40, 192 (s->segments & 0x04) ? color_segment : 0); 193 draw_vertical_line(surface, 10, 40, 70, 194 (s->segments & 0x08) ? color_segment : 0); 195 draw_horizontal_line(surface, 70, 10, 40, 196 (s->segments & 0x10) ? color_segment : 0); 197 draw_vertical_line(surface, 40, 40, 70, 198 (s->segments & 0x20) ? color_segment : 0); 199 draw_vertical_line(surface, 40, 10, 40, 200 (s->segments & 0x40) ? color_segment : 0); 201 draw_horizontal_line(surface, 10, 10, 40, 202 (s->segments & 0x80) ? color_segment : 0); 203 204 /* display led */ 205 if (!(s->segments & 0x01)) 206 color_led = 0; /* black */ 207 draw_horizontal_line(surface, 68, 50, 50, color_led); 208 draw_horizontal_line(surface, 69, 49, 51, color_led); 209 draw_horizontal_line(surface, 70, 48, 52, color_led); 210 draw_horizontal_line(surface, 71, 49, 51, color_led); 211 draw_horizontal_line(surface, 72, 50, 50, color_led); 212 } 213 214 s->state = REDRAW_NONE; 215 dpy_gfx_update(s->con, 0, 0, 216 surface_width(surface), surface_height(surface)); 217 } 218 219 static void jazz_led_invalidate_display(void *opaque) 220 { 221 LedState *s = opaque; 222 s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND; 223 } 224 225 static void jazz_led_text_update(void *opaque, console_ch_t *chardata) 226 { 227 LedState *s = opaque; 228 char buf[2]; 229 230 dpy_text_cursor(s->con, -1, -1); 231 qemu_console_resize(s->con, 2, 1); 232 233 /* TODO: draw the segments */ 234 snprintf(buf, 2, "%02hhx\n", s->segments); 235 console_write_ch(chardata++, 0x00200100 | buf[0]); 236 console_write_ch(chardata++, 0x00200100 | buf[1]); 237 238 dpy_text_update(s->con, 0, 0, 2, 1); 239 } 240 241 static int jazz_led_post_load(void *opaque, int version_id) 242 { 243 /* force refresh */ 244 jazz_led_invalidate_display(opaque); 245 246 return 0; 247 } 248 249 static const VMStateDescription vmstate_jazz_led = { 250 .name = "jazz-led", 251 .version_id = 0, 252 .minimum_version_id = 0, 253 .minimum_version_id_old = 0, 254 .post_load = jazz_led_post_load, 255 .fields = (VMStateField[]) { 256 VMSTATE_UINT8(segments, LedState), 257 VMSTATE_END_OF_LIST() 258 } 259 }; 260 261 static const GraphicHwOps jazz_led_ops = { 262 .invalidate = jazz_led_invalidate_display, 263 .gfx_update = jazz_led_update_display, 264 .text_update = jazz_led_text_update, 265 }; 266 267 static int jazz_led_init(SysBusDevice *dev) 268 { 269 LedState *s = JAZZ_LED(dev); 270 271 memory_region_init_io(&s->iomem, OBJECT(s), &led_ops, s, "led", 1); 272 sysbus_init_mmio(dev, &s->iomem); 273 274 s->con = graphic_console_init(DEVICE(dev), 0, &jazz_led_ops, s); 275 276 return 0; 277 } 278 279 static void jazz_led_reset(DeviceState *d) 280 { 281 LedState *s = JAZZ_LED(d); 282 283 s->segments = 0; 284 s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND; 285 qemu_console_resize(s->con, 60, 80); 286 } 287 288 static void jazz_led_class_init(ObjectClass *klass, void *data) 289 { 290 DeviceClass *dc = DEVICE_CLASS(klass); 291 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 292 293 k->init = jazz_led_init; 294 dc->desc = "Jazz LED display", 295 dc->vmsd = &vmstate_jazz_led; 296 dc->reset = jazz_led_reset; 297 } 298 299 static const TypeInfo jazz_led_info = { 300 .name = TYPE_JAZZ_LED, 301 .parent = TYPE_SYS_BUS_DEVICE, 302 .instance_size = sizeof(LedState), 303 .class_init = jazz_led_class_init, 304 }; 305 306 static void jazz_led_register(void) 307 { 308 type_register_static(&jazz_led_info); 309 } 310 311 type_init(jazz_led_register); 312