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5fafdf24 1/*
bdd5003a
PB
2 * Arm PrimeCell PL110 Color LCD Controller
3 *
2e9bdce5 4 * Copyright (c) 2005-2009 CodeSourcery.
bdd5003a
PB
5 * Written by Paul Brook
6 *
7 * This code is licenced under the GNU LGPL
8 */
9
2e9bdce5 10#include "sysbus.h"
87ecb68b 11#include "console.h"
714fa308 12#include "framebuffer.h"
bdd5003a
PB
13
14#define PL110_CR_EN 0x001
e9c05b42 15#define PL110_CR_BGR 0x100
bdd5003a
PB
16#define PL110_CR_BEBO 0x200
17#define PL110_CR_BEPO 0x400
18#define PL110_CR_PWR 0x800
19
20enum pl110_bppmode
21{
22 BPP_1,
23 BPP_2,
24 BPP_4,
25 BPP_8,
26 BPP_16,
27 BPP_32
28};
29
30typedef struct {
2e9bdce5 31 SysBusDevice busdev;
bdd5003a 32 DisplayState *ds;
c60e08d9 33
cdbdb648
PB
34 /* The Versatile/PB uses a slightly modified PL110 controller. */
35 int versatile;
bdd5003a
PB
36 uint32_t timing[4];
37 uint32_t cr;
38 uint32_t upbase;
39 uint32_t lpbase;
40 uint32_t int_status;
41 uint32_t int_mask;
42 int cols;
43 int rows;
44 enum pl110_bppmode bpp;
45 int invalidate;
46 uint32_t pallette[256];
47 uint32_t raw_pallette[128];
d537cf6c 48 qemu_irq irq;
bdd5003a
PB
49} pl110_state;
50
8c60d065
PM
51static const VMStateDescription vmstate_pl110 = {
52 .name = "pl110",
53 .version_id = 1,
54 .minimum_version_id = 1,
55 .fields = (VMStateField[]) {
56 VMSTATE_INT32(versatile, pl110_state),
57 VMSTATE_UINT32_ARRAY(timing, pl110_state, 4),
58 VMSTATE_UINT32(cr, pl110_state),
59 VMSTATE_UINT32(upbase, pl110_state),
60 VMSTATE_UINT32(lpbase, pl110_state),
61 VMSTATE_UINT32(int_status, pl110_state),
62 VMSTATE_UINT32(int_mask, pl110_state),
63 VMSTATE_INT32(cols, pl110_state),
64 VMSTATE_INT32(rows, pl110_state),
65 VMSTATE_UINT32(bpp, pl110_state),
66 VMSTATE_INT32(invalidate, pl110_state),
67 VMSTATE_UINT32_ARRAY(pallette, pl110_state, 256),
68 VMSTATE_UINT32_ARRAY(raw_pallette, pl110_state, 128),
69 VMSTATE_END_OF_LIST()
70 }
71};
72
bdd5003a
PB
73static const unsigned char pl110_id[] =
74{ 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
75
cdbdb648
PB
76/* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
77 has a different ID. However Linux only looks for the normal ID. */
78#if 0
79static const unsigned char pl110_versatile_id[] =
80{ 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
81#else
82#define pl110_versatile_id pl110_id
83#endif
84
602dafcf 85#include "pixel_ops.h"
bdd5003a 86
bdd5003a
PB
87#define BITS 8
88#include "pl110_template.h"
89#define BITS 15
90#include "pl110_template.h"
91#define BITS 16
92#include "pl110_template.h"
93#define BITS 24
94#include "pl110_template.h"
95#define BITS 32
96#include "pl110_template.h"
97
98static int pl110_enabled(pl110_state *s)
99{
100 return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
101}
102
95219897 103static void pl110_update_display(void *opaque)
bdd5003a
PB
104{
105 pl110_state *s = (pl110_state *)opaque;
106 drawfn* fntable;
107 drawfn fn;
bdd5003a
PB
108 int dest_width;
109 int src_width;
e9c05b42 110 int bpp_offset;
714fa308
PB
111 int first;
112 int last;
bdd5003a
PB
113
114 if (!pl110_enabled(s))
115 return;
3b46e624 116
0e1f5a0c 117 switch (ds_get_bits_per_pixel(s->ds)) {
af2f6733
PB
118 case 0:
119 return;
bdd5003a
PB
120 case 8:
121 fntable = pl110_draw_fn_8;
122 dest_width = 1;
123 break;
124 case 15:
125 fntable = pl110_draw_fn_15;
126 dest_width = 2;
127 break;
128 case 16:
129 fntable = pl110_draw_fn_16;
130 dest_width = 2;
131 break;
132 case 24:
133 fntable = pl110_draw_fn_24;
134 dest_width = 3;
135 break;
136 case 32:
137 fntable = pl110_draw_fn_32;
138 dest_width = 4;
139 break;
140 default:
af2f6733 141 fprintf(stderr, "pl110: Bad color depth\n");
bdd5003a
PB
142 exit(1);
143 }
e9c05b42
AZ
144 if (s->cr & PL110_CR_BGR)
145 bpp_offset = 0;
146 else
147 bpp_offset = 18;
148
bdd5003a 149 if (s->cr & PL110_CR_BEBO)
e9c05b42 150 fn = fntable[s->bpp + 6 + bpp_offset];
bdd5003a 151 else if (s->cr & PL110_CR_BEPO)
e9c05b42 152 fn = fntable[s->bpp + 12 + bpp_offset];
bdd5003a 153 else
e9c05b42 154 fn = fntable[s->bpp + bpp_offset];
3b46e624 155
bdd5003a
PB
156 src_width = s->cols;
157 switch (s->bpp) {
158 case BPP_1:
159 src_width >>= 3;
160 break;
161 case BPP_2:
162 src_width >>= 2;
163 break;
164 case BPP_4:
165 src_width >>= 1;
166 break;
167 case BPP_8:
168 break;
169 case BPP_16:
170 src_width <<= 1;
171 break;
172 case BPP_32:
173 src_width <<= 2;
174 break;
175 }
176 dest_width *= s->cols;
714fa308
PB
177 first = 0;
178 framebuffer_update_display(s->ds,
179 s->upbase, s->cols, s->rows,
180 src_width, dest_width, 0,
181 s->invalidate,
182 fn, s->pallette,
183 &first, &last);
184 if (first >= 0) {
185 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
bdd5003a 186 }
bdd5003a 187 s->invalidate = 0;
bdd5003a
PB
188}
189
95219897 190static void pl110_invalidate_display(void * opaque)
bdd5003a
PB
191{
192 pl110_state *s = (pl110_state *)opaque;
193 s->invalidate = 1;
bfdb3629
BS
194 if (pl110_enabled(s)) {
195 qemu_console_resize(s->ds, s->cols, s->rows);
196 }
bdd5003a
PB
197}
198
199static void pl110_update_pallette(pl110_state *s, int n)
200{
201 int i;
202 uint32_t raw;
203 unsigned int r, g, b;
204
205 raw = s->raw_pallette[n];
206 n <<= 1;
207 for (i = 0; i < 2; i++) {
208 r = (raw & 0x1f) << 3;
209 raw >>= 5;
210 g = (raw & 0x1f) << 3;
211 raw >>= 5;
212 b = (raw & 0x1f) << 3;
213 /* The I bit is ignored. */
214 raw >>= 6;
0e1f5a0c 215 switch (ds_get_bits_per_pixel(s->ds)) {
bdd5003a
PB
216 case 8:
217 s->pallette[n] = rgb_to_pixel8(r, g, b);
218 break;
219 case 15:
220 s->pallette[n] = rgb_to_pixel15(r, g, b);
221 break;
222 case 16:
223 s->pallette[n] = rgb_to_pixel16(r, g, b);
224 break;
225 case 24:
226 case 32:
227 s->pallette[n] = rgb_to_pixel32(r, g, b);
228 break;
229 }
230 n++;
231 }
232}
233
234static void pl110_resize(pl110_state *s, int width, int height)
235{
236 if (width != s->cols || height != s->rows) {
237 if (pl110_enabled(s)) {
3023f332 238 qemu_console_resize(s->ds, width, height);
bdd5003a
PB
239 }
240 }
241 s->cols = width;
242 s->rows = height;
243}
244
245/* Update interrupts. */
246static void pl110_update(pl110_state *s)
247{
248 /* TODO: Implement interrupts. */
249}
250
c227f099 251static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
bdd5003a
PB
252{
253 pl110_state *s = (pl110_state *)opaque;
254
bdd5003a 255 if (offset >= 0xfe0 && offset < 0x1000) {
cdbdb648
PB
256 if (s->versatile)
257 return pl110_versatile_id[(offset - 0xfe0) >> 2];
258 else
259 return pl110_id[(offset - 0xfe0) >> 2];
bdd5003a
PB
260 }
261 if (offset >= 0x200 && offset < 0x400) {
262 return s->raw_pallette[(offset - 0x200) >> 2];
263 }
264 switch (offset >> 2) {
265 case 0: /* LCDTiming0 */
266 return s->timing[0];
267 case 1: /* LCDTiming1 */
268 return s->timing[1];
269 case 2: /* LCDTiming2 */
270 return s->timing[2];
271 case 3: /* LCDTiming3 */
272 return s->timing[3];
273 case 4: /* LCDUPBASE */
274 return s->upbase;
275 case 5: /* LCDLPBASE */
276 return s->lpbase;
277 case 6: /* LCDIMSC */
64075cd7
PB
278 if (s->versatile)
279 return s->cr;
bdd5003a
PB
280 return s->int_mask;
281 case 7: /* LCDControl */
64075cd7
PB
282 if (s->versatile)
283 return s->int_mask;
bdd5003a
PB
284 return s->cr;
285 case 8: /* LCDRIS */
286 return s->int_status;
287 case 9: /* LCDMIS */
288 return s->int_status & s->int_mask;
289 case 11: /* LCDUPCURR */
290 /* TODO: Implement vertical refresh. */
291 return s->upbase;
292 case 12: /* LCDLPCURR */
293 return s->lpbase;
294 default:
2ac71179 295 hw_error("pl110_read: Bad offset %x\n", (int)offset);
bdd5003a
PB
296 return 0;
297 }
298}
299
c227f099 300static void pl110_write(void *opaque, target_phys_addr_t offset,
bdd5003a
PB
301 uint32_t val)
302{
303 pl110_state *s = (pl110_state *)opaque;
304 int n;
305
306 /* For simplicity invalidate the display whenever a control register
307 is writen to. */
308 s->invalidate = 1;
bdd5003a
PB
309 if (offset >= 0x200 && offset < 0x400) {
310 /* Pallette. */
311 n = (offset - 0x200) >> 2;
312 s->raw_pallette[(offset - 0x200) >> 2] = val;
313 pl110_update_pallette(s, n);
e10c2bfb 314 return;
bdd5003a
PB
315 }
316 switch (offset >> 2) {
317 case 0: /* LCDTiming0 */
318 s->timing[0] = val;
319 n = ((val & 0xfc) + 4) * 4;
320 pl110_resize(s, n, s->rows);
321 break;
322 case 1: /* LCDTiming1 */
323 s->timing[1] = val;
324 n = (val & 0x3ff) + 1;
325 pl110_resize(s, s->cols, n);
326 break;
327 case 2: /* LCDTiming2 */
328 s->timing[2] = val;
329 break;
330 case 3: /* LCDTiming3 */
331 s->timing[3] = val;
332 break;
333 case 4: /* LCDUPBASE */
334 s->upbase = val;
335 break;
336 case 5: /* LCDLPBASE */
337 s->lpbase = val;
338 break;
339 case 6: /* LCDIMSC */
cdbdb648
PB
340 if (s->versatile)
341 goto control;
342 imsc:
bdd5003a
PB
343 s->int_mask = val;
344 pl110_update(s);
345 break;
346 case 7: /* LCDControl */
cdbdb648
PB
347 if (s->versatile)
348 goto imsc;
349 control:
bdd5003a
PB
350 s->cr = val;
351 s->bpp = (val >> 1) & 7;
352 if (pl110_enabled(s)) {
3023f332 353 qemu_console_resize(s->ds, s->cols, s->rows);
bdd5003a
PB
354 }
355 break;
356 case 10: /* LCDICR */
357 s->int_status &= ~val;
358 pl110_update(s);
359 break;
360 default:
2ac71179 361 hw_error("pl110_write: Bad offset %x\n", (int)offset);
bdd5003a
PB
362 }
363}
364
d60efc6b 365static CPUReadMemoryFunc * const pl110_readfn[] = {
bdd5003a
PB
366 pl110_read,
367 pl110_read,
368 pl110_read
369};
370
d60efc6b 371static CPUWriteMemoryFunc * const pl110_writefn[] = {
bdd5003a
PB
372 pl110_write,
373 pl110_write,
374 pl110_write
375};
376
81a322d4 377static int pl110_init(SysBusDevice *dev)
bdd5003a 378{
2e9bdce5 379 pl110_state *s = FROM_SYSBUS(pl110_state, dev);
bdd5003a
PB
380 int iomemtype;
381
1eed09cb 382 iomemtype = cpu_register_io_memory(pl110_readfn,
2507c12a
AG
383 pl110_writefn, s,
384 DEVICE_NATIVE_ENDIAN);
2e9bdce5
PB
385 sysbus_init_mmio(dev, 0x1000, iomemtype);
386 sysbus_init_irq(dev, &s->irq);
3023f332
AL
387 s->ds = graphic_console_init(pl110_update_display,
388 pl110_invalidate_display,
389 NULL, NULL, s);
81a322d4 390 return 0;
bdd5003a 391}
2e9bdce5 392
81a322d4 393static int pl110_versatile_init(SysBusDevice *dev)
2e9bdce5
PB
394{
395 pl110_state *s = FROM_SYSBUS(pl110_state, dev);
396 s->versatile = 1;
81a322d4 397 return pl110_init(dev);
2e9bdce5
PB
398}
399
8c60d065
PM
400static SysBusDeviceInfo pl110_info = {
401 .init = pl110_init,
402 .qdev.name = "pl110",
403 .qdev.size = sizeof(pl110_state),
404 .qdev.vmsd = &vmstate_pl110,
405 .qdev.no_user = 1,
406};
407
408static SysBusDeviceInfo pl110_versatile_info = {
409 .init = pl110_versatile_init,
410 .qdev.name = "pl110_versatile",
411 .qdev.size = sizeof(pl110_state),
412 .qdev.vmsd = &vmstate_pl110,
413 .qdev.no_user = 1,
414};
415
2e9bdce5
PB
416static void pl110_register_devices(void)
417{
8c60d065
PM
418 sysbus_register_withprop(&pl110_info);
419 sysbus_register_withprop(&pl110_versatile_info);
2e9bdce5
PB
420}
421
422device_init(pl110_register_devices)