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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
33typedef 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
40typedef 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
49static 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
61static 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
73static 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
83
84static 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
115static 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
146static 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
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
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
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
208 if (!(s->segments & 0x01)) {
209 color_led = 0;
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
222static void jazz_led_invalidate_display(void *opaque)
223{
224 LedState *s = opaque;
225 s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
226}
227
228static 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
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
246static int jazz_led_post_load(void *opaque, int version_id)
247{
248
249 jazz_led_invalidate_display(opaque);
250
251 return 0;
252}
253
254static 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
265static 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
271static 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
280static 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
287static 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
296static 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
306static 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
314static void jazz_led_register(void)
315{
316 type_register_static(&jazz_led_info);
317}
318
319type_init(jazz_led_register);
320
