Annotation of qemu/hw/jazz_led.c, revision 1.1.1.6
1.1 root 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:
1.1.1.5 root 32: #ifdef DEBUG_LED
33: #define DPRINTF(fmt, ...) \
34: do { printf("jazz led: " fmt , ## __VA_ARGS__); } while (0)
35: #else
36: #define DPRINTF(fmt, ...) do {} while (0)
37: #endif
38: #define BADF(fmt, ...) \
39: do { fprintf(stderr, "jazz led ERROR: " fmt , ## __VA_ARGS__);} while (0)
40:
1.1 root 41: typedef enum {
42: REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
43: } screen_state_t;
44:
45: typedef struct LedState {
46: uint8_t segments;
47: DisplayState *ds;
48: screen_state_t state;
49: } LedState;
50:
51: static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
52: {
53: LedState *s = opaque;
54: uint32_t val;
55:
1.1.1.2 root 56: switch (addr) {
1.1 root 57: case 0:
58: val = s->segments;
59: break;
60: default:
1.1.1.5 root 61: BADF("invalid read at [" TARGET_FMT_plx "]\n", addr);
1.1 root 62: val = 0;
63: }
64:
1.1.1.5 root 65: DPRINTF("read addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
66:
1.1 root 67: return val;
68: }
69:
70: static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
71: {
72: uint32_t v;
73: #ifdef TARGET_WORDS_BIGENDIAN
74: v = led_readb(opaque, addr) << 8;
75: v |= led_readb(opaque, addr + 1);
76: #else
77: v = led_readb(opaque, addr);
78: v |= led_readb(opaque, addr + 1) << 8;
79: #endif
80: return v;
81: }
82:
83: static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
84: {
85: uint32_t v;
86: #ifdef TARGET_WORDS_BIGENDIAN
87: v = led_readb(opaque, addr) << 24;
88: v |= led_readb(opaque, addr + 1) << 16;
89: v |= led_readb(opaque, addr + 2) << 8;
90: v |= led_readb(opaque, addr + 3);
91: #else
92: v = led_readb(opaque, addr);
93: v |= led_readb(opaque, addr + 1) << 8;
94: v |= led_readb(opaque, addr + 2) << 16;
95: v |= led_readb(opaque, addr + 3) << 24;
96: #endif
97: return v;
98: }
99:
100: static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
101: {
102: LedState *s = opaque;
103:
1.1.1.5 root 104: DPRINTF("write addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
105:
1.1.1.2 root 106: switch (addr) {
1.1 root 107: case 0:
108: s->segments = val;
109: s->state |= REDRAW_SEGMENTS;
110: break;
111: default:
1.1.1.5 root 112: BADF("invalid write of 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
1.1 root 113: break;
114: }
115: }
116:
117: static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
118: {
119: #ifdef TARGET_WORDS_BIGENDIAN
120: led_writeb(opaque, addr, (val >> 8) & 0xff);
121: led_writeb(opaque, addr + 1, val & 0xff);
122: #else
123: led_writeb(opaque, addr, val & 0xff);
124: led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
125: #endif
126: }
127:
128: static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
129: {
130: #ifdef TARGET_WORDS_BIGENDIAN
131: led_writeb(opaque, addr, (val >> 24) & 0xff);
132: led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
133: led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
134: led_writeb(opaque, addr + 3, val & 0xff);
135: #else
136: led_writeb(opaque, addr, val & 0xff);
137: led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
138: led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
139: led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
140: #endif
141: }
142:
1.1.1.4 root 143: static CPUReadMemoryFunc * const led_read[3] = {
1.1 root 144: led_readb,
145: led_readw,
146: led_readl,
147: };
148:
1.1.1.4 root 149: static CPUWriteMemoryFunc * const led_write[3] = {
1.1 root 150: led_writeb,
151: led_writew,
152: led_writel,
153: };
154:
155: /***********************************************************/
156: /* jazz_led display */
157:
158: static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, uint32_t color)
159: {
160: uint8_t *d;
161: int x, bpp;
162:
1.1.1.2 root 163: bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
164: d = ds_get_data(ds) + ds_get_linesize(ds) * posy + bpp * posx1;
1.1 root 165: switch(bpp) {
166: case 1:
167: for (x = posx1; x <= posx2; x++) {
168: *((uint8_t *)d) = color;
169: d++;
170: }
171: break;
172: case 2:
173: for (x = posx1; x <= posx2; x++) {
174: *((uint16_t *)d) = color;
175: d += 2;
176: }
177: break;
178: case 4:
179: for (x = posx1; x <= posx2; x++) {
180: *((uint32_t *)d) = color;
181: d += 4;
182: }
183: break;
184: }
185: }
186:
187: static void draw_vertical_line(DisplayState *ds, int posx, int posy1, int posy2, uint32_t color)
188: {
189: uint8_t *d;
190: int y, bpp;
191:
1.1.1.2 root 192: bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
193: d = ds_get_data(ds) + ds_get_linesize(ds) * posy1 + bpp * posx;
1.1 root 194: switch(bpp) {
195: case 1:
196: for (y = posy1; y <= posy2; y++) {
197: *((uint8_t *)d) = color;
1.1.1.2 root 198: d += ds_get_linesize(ds);
1.1 root 199: }
200: break;
201: case 2:
202: for (y = posy1; y <= posy2; y++) {
203: *((uint16_t *)d) = color;
1.1.1.2 root 204: d += ds_get_linesize(ds);
1.1 root 205: }
206: break;
207: case 4:
208: for (y = posy1; y <= posy2; y++) {
209: *((uint32_t *)d) = color;
1.1.1.2 root 210: d += ds_get_linesize(ds);
1.1 root 211: }
212: break;
213: }
214: }
215:
216: static void jazz_led_update_display(void *opaque)
217: {
218: LedState *s = opaque;
219: DisplayState *ds = s->ds;
220: uint8_t *d1;
221: uint32_t color_segment, color_led;
222: int y, bpp;
223:
224: if (s->state & REDRAW_BACKGROUND) {
225: /* clear screen */
1.1.1.2 root 226: bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
227: d1 = ds_get_data(ds);
228: for (y = 0; y < ds_get_height(ds); y++) {
229: memset(d1, 0x00, ds_get_width(ds) * bpp);
230: d1 += ds_get_linesize(ds);
1.1 root 231: }
232: }
233:
234: if (s->state & REDRAW_SEGMENTS) {
235: /* set colors according to bpp */
1.1.1.2 root 236: switch (ds_get_bits_per_pixel(ds)) {
1.1 root 237: case 8:
238: color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
239: color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
240: break;
241: case 15:
242: color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
243: color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
244: break;
245: case 16:
246: color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
247: color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
248: case 24:
249: color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
250: color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
251: break;
252: case 32:
253: color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
254: color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
255: break;
256: default:
257: return;
258: }
259:
260: /* display segments */
261: draw_horizontal_line(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
262: draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
263: draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
264: draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
265: draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
266: draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
267: draw_horizontal_line(ds, 10, 10, 40, (s->segments & 0x80) ? color_segment : 0);
268:
269: /* display led */
270: if (!(s->segments & 0x01))
271: color_led = 0; /* black */
272: draw_horizontal_line(ds, 68, 50, 50, color_led);
273: draw_horizontal_line(ds, 69, 49, 51, color_led);
274: draw_horizontal_line(ds, 70, 48, 52, color_led);
275: draw_horizontal_line(ds, 71, 49, 51, color_led);
276: draw_horizontal_line(ds, 72, 50, 50, color_led);
277: }
278:
279: s->state = REDRAW_NONE;
1.1.1.2 root 280: dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
1.1 root 281: }
282:
283: static void jazz_led_invalidate_display(void *opaque)
284: {
285: LedState *s = opaque;
286: s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
287: }
288:
289: static void jazz_led_screen_dump(void *opaque, const char *filename)
290: {
291: printf("jazz_led_screen_dump() not implemented\n");
292: }
293:
1.1.1.2 root 294: static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
295: {
296: LedState *s = opaque;
297: char buf[2];
298:
299: dpy_cursor(s->ds, -1, -1);
300: qemu_console_resize(s->ds, 2, 1);
301:
302: /* TODO: draw the segments */
303: snprintf(buf, 2, "%02hhx\n", s->segments);
304: console_write_ch(chardata++, 0x00200100 | buf[0]);
305: console_write_ch(chardata++, 0x00200100 | buf[1]);
306:
307: dpy_update(s->ds, 0, 0, 2, 1);
308: }
309:
310: void jazz_led_init(target_phys_addr_t base)
1.1 root 311: {
312: LedState *s;
313: int io;
314:
1.1.1.6 ! root 315: s = g_malloc0(sizeof(LedState));
1.1 root 316:
317: s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
318:
1.1.1.5 root 319: io = cpu_register_io_memory(led_read, led_write, s,
320: DEVICE_NATIVE_ENDIAN);
1.1.1.2 root 321: cpu_register_physical_memory(base, 1, io);
1.1 root 322:
1.1.1.2 root 323: s->ds = graphic_console_init(jazz_led_update_display,
324: jazz_led_invalidate_display,
325: jazz_led_screen_dump,
326: jazz_led_text_update, s);
327: qemu_console_resize(s->ds, 60, 80);
1.1 root 328: }
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