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1 /*
2 * QEMU ESCC (Z8030/Z8530/Z85C30/SCC/ESCC) serial port emulation
3 *
4 * Copyright (c) 2003-2005 Fabrice Bellard
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 "hw/hw.h"
27 #include "hw/sysbus.h"
28 #include "hw/char/escc.h"
29 #include "sysemu/char.h"
30 #include "ui/console.h"
31 #include "ui/input.h"
32 #include "trace.h"
33
34 /*
35 * Chipset docs:
36 * "Z80C30/Z85C30/Z80230/Z85230/Z85233 SCC/ESCC User Manual",
37 * http://www.zilog.com/docs/serial/scc_escc_um.pdf
38 *
39 * On Sparc32 this is the serial port, mouse and keyboard part of chip STP2001
40 * (Slave I/O), also produced as NCR89C105. See
41 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
42 *
43 * The serial ports implement full AMD AM8530 or Zilog Z8530 chips,
44 * mouse and keyboard ports don't implement all functions and they are
45 * only asynchronous. There is no DMA.
46 *
47 * Z85C30 is also used on PowerMacs. There are some small differences
48 * between Sparc version (sunzilog) and PowerMac (pmac):
49 * Offset between control and data registers
50 * There is some kind of lockup bug, but we can ignore it
51 * CTS is inverted
52 * DMA on pmac using DBDMA chip
53 * pmac can do IRDA and faster rates, sunzilog can only do 38400
54 * pmac baud rate generator clock is 3.6864 MHz, sunzilog 4.9152 MHz
55 */
56
57 /*
58 * Modifications:
59 * 2006-Aug-10 Igor Kovalenko : Renamed KBDQueue to SERIOQueue, implemented
60 * serial mouse queue.
61 * Implemented serial mouse protocol.
62 *
63 * 2010-May-23 Artyom Tarasenko: Reworked IUS logic
64 */
65
66 typedef enum {
67 chn_a, chn_b,
68 } ChnID;
69
70 #define CHN_C(s) ((s)->chn == chn_b? 'b' : 'a')
71
72 typedef enum {
73 ser, kbd, mouse,
74 } ChnType;
75
76 #define SERIO_QUEUE_SIZE 256
77
78 typedef struct {
79 uint8_t data[SERIO_QUEUE_SIZE];
80 int rptr, wptr, count;
81 } SERIOQueue;
82
83 #define SERIAL_REGS 16
84 typedef struct ChannelState {
85 qemu_irq irq;
86 uint32_t rxint, txint, rxint_under_svc, txint_under_svc;
87 struct ChannelState *otherchn;
88 uint32_t reg;
89 uint8_t wregs[SERIAL_REGS], rregs[SERIAL_REGS];
90 SERIOQueue queue;
91 CharBackend chr;
92 int e0_mode, led_mode, caps_lock_mode, num_lock_mode;
93 int disabled;
94 int clock;
95 uint32_t vmstate_dummy;
96 ChnID chn; // this channel, A (base+4) or B (base+0)
97 ChnType type;
98 uint8_t rx, tx;
99 QemuInputHandlerState *hs;
100 } ChannelState;
101
102 #define ESCC(obj) OBJECT_CHECK(ESCCState, (obj), TYPE_ESCC)
103
104 typedef struct ESCCState {
105 SysBusDevice parent_obj;
106
107 struct ChannelState chn[2];
108 uint32_t it_shift;
109 MemoryRegion mmio;
110 uint32_t disabled;
111 uint32_t frequency;
112 } ESCCState;
113
114 #define SERIAL_CTRL 0
115 #define SERIAL_DATA 1
116
117 #define W_CMD 0
118 #define CMD_PTR_MASK 0x07
119 #define CMD_CMD_MASK 0x38
120 #define CMD_HI 0x08
121 #define CMD_CLR_TXINT 0x28
122 #define CMD_CLR_IUS 0x38
123 #define W_INTR 1
124 #define INTR_INTALL 0x01
125 #define INTR_TXINT 0x02
126 #define INTR_RXMODEMSK 0x18
127 #define INTR_RXINT1ST 0x08
128 #define INTR_RXINTALL 0x10
129 #define W_IVEC 2
130 #define W_RXCTRL 3
131 #define RXCTRL_RXEN 0x01
132 #define W_TXCTRL1 4
133 #define TXCTRL1_PAREN 0x01
134 #define TXCTRL1_PAREV 0x02
135 #define TXCTRL1_1STOP 0x04
136 #define TXCTRL1_1HSTOP 0x08
137 #define TXCTRL1_2STOP 0x0c
138 #define TXCTRL1_STPMSK 0x0c
139 #define TXCTRL1_CLK1X 0x00
140 #define TXCTRL1_CLK16X 0x40
141 #define TXCTRL1_CLK32X 0x80
142 #define TXCTRL1_CLK64X 0xc0
143 #define TXCTRL1_CLKMSK 0xc0
144 #define W_TXCTRL2 5
145 #define TXCTRL2_TXEN 0x08
146 #define TXCTRL2_BITMSK 0x60
147 #define TXCTRL2_5BITS 0x00
148 #define TXCTRL2_7BITS 0x20
149 #define TXCTRL2_6BITS 0x40
150 #define TXCTRL2_8BITS 0x60
151 #define W_SYNC1 6
152 #define W_SYNC2 7
153 #define W_TXBUF 8
154 #define W_MINTR 9
155 #define MINTR_STATUSHI 0x10
156 #define MINTR_RST_MASK 0xc0
157 #define MINTR_RST_B 0x40
158 #define MINTR_RST_A 0x80
159 #define MINTR_RST_ALL 0xc0
160 #define W_MISC1 10
161 #define W_CLOCK 11
162 #define CLOCK_TRXC 0x08
163 #define W_BRGLO 12
164 #define W_BRGHI 13
165 #define W_MISC2 14
166 #define MISC2_PLLDIS 0x30
167 #define W_EXTINT 15
168 #define EXTINT_DCD 0x08
169 #define EXTINT_SYNCINT 0x10
170 #define EXTINT_CTSINT 0x20
171 #define EXTINT_TXUNDRN 0x40
172 #define EXTINT_BRKINT 0x80
173
174 #define R_STATUS 0
175 #define STATUS_RXAV 0x01
176 #define STATUS_ZERO 0x02
177 #define STATUS_TXEMPTY 0x04
178 #define STATUS_DCD 0x08
179 #define STATUS_SYNC 0x10
180 #define STATUS_CTS 0x20
181 #define STATUS_TXUNDRN 0x40
182 #define STATUS_BRK 0x80
183 #define R_SPEC 1
184 #define SPEC_ALLSENT 0x01
185 #define SPEC_BITS8 0x06
186 #define R_IVEC 2
187 #define IVEC_TXINTB 0x00
188 #define IVEC_LONOINT 0x06
189 #define IVEC_LORXINTA 0x0c
190 #define IVEC_LORXINTB 0x04
191 #define IVEC_LOTXINTA 0x08
192 #define IVEC_HINOINT 0x60
193 #define IVEC_HIRXINTA 0x30
194 #define IVEC_HIRXINTB 0x20
195 #define IVEC_HITXINTA 0x10
196 #define R_INTR 3
197 #define INTR_EXTINTB 0x01
198 #define INTR_TXINTB 0x02
199 #define INTR_RXINTB 0x04
200 #define INTR_EXTINTA 0x08
201 #define INTR_TXINTA 0x10
202 #define INTR_RXINTA 0x20
203 #define R_IPEN 4
204 #define R_TXCTRL1 5
205 #define R_TXCTRL2 6
206 #define R_BC 7
207 #define R_RXBUF 8
208 #define R_RXCTRL 9
209 #define R_MISC 10
210 #define R_MISC1 11
211 #define R_BRGLO 12
212 #define R_BRGHI 13
213 #define R_MISC1I 14
214 #define R_EXTINT 15
215
216 static void handle_kbd_command(ChannelState *s, int val);
217 static int serial_can_receive(void *opaque);
218 static void serial_receive_byte(ChannelState *s, int ch);
219
220 static void clear_queue(void *opaque)
221 {
222 ChannelState *s = opaque;
223 SERIOQueue *q = &s->queue;
224 q->rptr = q->wptr = q->count = 0;
225 }
226
227 static void put_queue(void *opaque, int b)
228 {
229 ChannelState *s = opaque;
230 SERIOQueue *q = &s->queue;
231
232 trace_escc_put_queue(CHN_C(s), b);
233 if (q->count >= SERIO_QUEUE_SIZE)
234 return;
235 q->data[q->wptr] = b;
236 if (++q->wptr == SERIO_QUEUE_SIZE)
237 q->wptr = 0;
238 q->count++;
239 serial_receive_byte(s, 0);
240 }
241
242 static uint32_t get_queue(void *opaque)
243 {
244 ChannelState *s = opaque;
245 SERIOQueue *q = &s->queue;
246 int val;
247
248 if (q->count == 0) {
249 return 0;
250 } else {
251 val = q->data[q->rptr];
252 if (++q->rptr == SERIO_QUEUE_SIZE)
253 q->rptr = 0;
254 q->count--;
255 }
256 trace_escc_get_queue(CHN_C(s), val);
257 if (q->count > 0)
258 serial_receive_byte(s, 0);
259 return val;
260 }
261
262 static int escc_update_irq_chn(ChannelState *s)
263 {
264 if ((((s->wregs[W_INTR] & INTR_TXINT) && (s->txint == 1)) ||
265 // tx ints enabled, pending
266 ((((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINT1ST) ||
267 ((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINTALL)) &&
268 s->rxint == 1) || // rx ints enabled, pending
269 ((s->wregs[W_EXTINT] & EXTINT_BRKINT) &&
270 (s->rregs[R_STATUS] & STATUS_BRK)))) { // break int e&p
271 return 1;
272 }
273 return 0;
274 }
275
276 static void escc_update_irq(ChannelState *s)
277 {
278 int irq;
279
280 irq = escc_update_irq_chn(s);
281 irq |= escc_update_irq_chn(s->otherchn);
282
283 trace_escc_update_irq(irq);
284 qemu_set_irq(s->irq, irq);
285 }
286
287 static void escc_reset_chn(ChannelState *s)
288 {
289 int i;
290
291 s->reg = 0;
292 for (i = 0; i < SERIAL_REGS; i++) {
293 s->rregs[i] = 0;
294 s->wregs[i] = 0;
295 }
296 s->wregs[W_TXCTRL1] = TXCTRL1_1STOP; // 1X divisor, 1 stop bit, no parity
297 s->wregs[W_MINTR] = MINTR_RST_ALL;
298 s->wregs[W_CLOCK] = CLOCK_TRXC; // Synch mode tx clock = TRxC
299 s->wregs[W_MISC2] = MISC2_PLLDIS; // PLL disabled
300 s->wregs[W_EXTINT] = EXTINT_DCD | EXTINT_SYNCINT | EXTINT_CTSINT |
301 EXTINT_TXUNDRN | EXTINT_BRKINT; // Enable most interrupts
302 if (s->disabled)
303 s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_DCD | STATUS_SYNC |
304 STATUS_CTS | STATUS_TXUNDRN;
305 else
306 s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_TXUNDRN;
307 s->rregs[R_SPEC] = SPEC_BITS8 | SPEC_ALLSENT;
308
309 s->rx = s->tx = 0;
310 s->rxint = s->txint = 0;
311 s->rxint_under_svc = s->txint_under_svc = 0;
312 s->e0_mode = s->led_mode = s->caps_lock_mode = s->num_lock_mode = 0;
313 clear_queue(s);
314 }
315
316 static void escc_reset(DeviceState *d)
317 {
318 ESCCState *s = ESCC(d);
319
320 escc_reset_chn(&s->chn[0]);
321 escc_reset_chn(&s->chn[1]);
322 }
323
324 static inline void set_rxint(ChannelState *s)
325 {
326 s->rxint = 1;
327 /* XXX: missing daisy chainnig: chn_b rx should have a lower priority
328 than chn_a rx/tx/special_condition service*/
329 s->rxint_under_svc = 1;
330 if (s->chn == chn_a) {
331 s->rregs[R_INTR] |= INTR_RXINTA;
332 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
333 s->otherchn->rregs[R_IVEC] = IVEC_HIRXINTA;
334 else
335 s->otherchn->rregs[R_IVEC] = IVEC_LORXINTA;
336 } else {
337 s->otherchn->rregs[R_INTR] |= INTR_RXINTB;
338 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
339 s->rregs[R_IVEC] = IVEC_HIRXINTB;
340 else
341 s->rregs[R_IVEC] = IVEC_LORXINTB;
342 }
343 escc_update_irq(s);
344 }
345
346 static inline void set_txint(ChannelState *s)
347 {
348 s->txint = 1;
349 if (!s->rxint_under_svc) {
350 s->txint_under_svc = 1;
351 if (s->chn == chn_a) {
352 if (s->wregs[W_INTR] & INTR_TXINT) {
353 s->rregs[R_INTR] |= INTR_TXINTA;
354 }
355 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
356 s->otherchn->rregs[R_IVEC] = IVEC_HITXINTA;
357 else
358 s->otherchn->rregs[R_IVEC] = IVEC_LOTXINTA;
359 } else {
360 s->rregs[R_IVEC] = IVEC_TXINTB;
361 if (s->wregs[W_INTR] & INTR_TXINT) {
362 s->otherchn->rregs[R_INTR] |= INTR_TXINTB;
363 }
364 }
365 escc_update_irq(s);
366 }
367 }
368
369 static inline void clr_rxint(ChannelState *s)
370 {
371 s->rxint = 0;
372 s->rxint_under_svc = 0;
373 if (s->chn == chn_a) {
374 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
375 s->otherchn->rregs[R_IVEC] = IVEC_HINOINT;
376 else
377 s->otherchn->rregs[R_IVEC] = IVEC_LONOINT;
378 s->rregs[R_INTR] &= ~INTR_RXINTA;
379 } else {
380 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
381 s->rregs[R_IVEC] = IVEC_HINOINT;
382 else
383 s->rregs[R_IVEC] = IVEC_LONOINT;
384 s->otherchn->rregs[R_INTR] &= ~INTR_RXINTB;
385 }
386 if (s->txint)
387 set_txint(s);
388 escc_update_irq(s);
389 }
390
391 static inline void clr_txint(ChannelState *s)
392 {
393 s->txint = 0;
394 s->txint_under_svc = 0;
395 if (s->chn == chn_a) {
396 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
397 s->otherchn->rregs[R_IVEC] = IVEC_HINOINT;
398 else
399 s->otherchn->rregs[R_IVEC] = IVEC_LONOINT;
400 s->rregs[R_INTR] &= ~INTR_TXINTA;
401 } else {
402 s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB;
403 if (s->wregs[W_MINTR] & MINTR_STATUSHI)
404 s->rregs[R_IVEC] = IVEC_HINOINT;
405 else
406 s->rregs[R_IVEC] = IVEC_LONOINT;
407 s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB;
408 }
409 if (s->rxint)
410 set_rxint(s);
411 escc_update_irq(s);
412 }
413
414 static void escc_update_parameters(ChannelState *s)
415 {
416 int speed, parity, data_bits, stop_bits;
417 QEMUSerialSetParams ssp;
418
419 if (!qemu_chr_fe_get_driver(&s->chr) || s->type != ser)
420 return;
421
422 if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREN) {
423 if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREV)
424 parity = 'E';
425 else
426 parity = 'O';
427 } else {
428 parity = 'N';
429 }
430 if ((s->wregs[W_TXCTRL1] & TXCTRL1_STPMSK) == TXCTRL1_2STOP)
431 stop_bits = 2;
432 else
433 stop_bits = 1;
434 switch (s->wregs[W_TXCTRL2] & TXCTRL2_BITMSK) {
435 case TXCTRL2_5BITS:
436 data_bits = 5;
437 break;
438 case TXCTRL2_7BITS:
439 data_bits = 7;
440 break;
441 case TXCTRL2_6BITS:
442 data_bits = 6;
443 break;
444 default:
445 case TXCTRL2_8BITS:
446 data_bits = 8;
447 break;
448 }
449 speed = s->clock / ((s->wregs[W_BRGLO] | (s->wregs[W_BRGHI] << 8)) + 2);
450 switch (s->wregs[W_TXCTRL1] & TXCTRL1_CLKMSK) {
451 case TXCTRL1_CLK1X:
452 break;
453 case TXCTRL1_CLK16X:
454 speed /= 16;
455 break;
456 case TXCTRL1_CLK32X:
457 speed /= 32;
458 break;
459 default:
460 case TXCTRL1_CLK64X:
461 speed /= 64;
462 break;
463 }
464 ssp.speed = speed;
465 ssp.parity = parity;
466 ssp.data_bits = data_bits;
467 ssp.stop_bits = stop_bits;
468 trace_escc_update_parameters(CHN_C(s), speed, parity, data_bits, stop_bits);
469 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
470 }
471
472 static void escc_mem_write(void *opaque, hwaddr addr,
473 uint64_t val, unsigned size)
474 {
475 ESCCState *serial = opaque;
476 ChannelState *s;
477 uint32_t saddr;
478 int newreg, channel;
479
480 val &= 0xff;
481 saddr = (addr >> serial->it_shift) & 1;
482 channel = (addr >> (serial->it_shift + 1)) & 1;
483 s = &serial->chn[channel];
484 switch (saddr) {
485 case SERIAL_CTRL:
486 trace_escc_mem_writeb_ctrl(CHN_C(s), s->reg, val & 0xff);
487 newreg = 0;
488 switch (s->reg) {
489 case W_CMD:
490 newreg = val & CMD_PTR_MASK;
491 val &= CMD_CMD_MASK;
492 switch (val) {
493 case CMD_HI:
494 newreg |= CMD_HI;
495 break;
496 case CMD_CLR_TXINT:
497 clr_txint(s);
498 break;
499 case CMD_CLR_IUS:
500 if (s->rxint_under_svc) {
501 s->rxint_under_svc = 0;
502 if (s->txint) {
503 set_txint(s);
504 }
505 } else if (s->txint_under_svc) {
506 s->txint_under_svc = 0;
507 }
508 escc_update_irq(s);
509 break;
510 default:
511 break;
512 }
513 break;
514 case W_INTR ... W_RXCTRL:
515 case W_SYNC1 ... W_TXBUF:
516 case W_MISC1 ... W_CLOCK:
517 case W_MISC2 ... W_EXTINT:
518 s->wregs[s->reg] = val;
519 break;
520 case W_TXCTRL1:
521 case W_TXCTRL2:
522 s->wregs[s->reg] = val;
523 escc_update_parameters(s);
524 break;
525 case W_BRGLO:
526 case W_BRGHI:
527 s->wregs[s->reg] = val;
528 s->rregs[s->reg] = val;
529 escc_update_parameters(s);
530 break;
531 case W_MINTR:
532 switch (val & MINTR_RST_MASK) {
533 case 0:
534 default:
535 break;
536 case MINTR_RST_B:
537 escc_reset_chn(&serial->chn[0]);
538 return;
539 case MINTR_RST_A:
540 escc_reset_chn(&serial->chn[1]);
541 return;
542 case MINTR_RST_ALL:
543 escc_reset(DEVICE(serial));
544 return;
545 }
546 break;
547 default:
548 break;
549 }
550 if (s->reg == 0)
551 s->reg = newreg;
552 else
553 s->reg = 0;
554 break;
555 case SERIAL_DATA:
556 trace_escc_mem_writeb_data(CHN_C(s), val);
557 s->tx = val;
558 if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { // tx enabled
559 if (qemu_chr_fe_get_driver(&s->chr)) {
560 /* XXX this blocks entire thread. Rewrite to use
561 * qemu_chr_fe_write and background I/O callbacks */
562 qemu_chr_fe_write_all(&s->chr, &s->tx, 1);
563 } else if (s->type == kbd && !s->disabled) {
564 handle_kbd_command(s, val);
565 }
566 }
567 s->rregs[R_STATUS] |= STATUS_TXEMPTY; // Tx buffer empty
568 s->rregs[R_SPEC] |= SPEC_ALLSENT; // All sent
569 set_txint(s);
570 break;
571 default:
572 break;
573 }
574 }
575
576 static uint64_t escc_mem_read(void *opaque, hwaddr addr,
577 unsigned size)
578 {
579 ESCCState *serial = opaque;
580 ChannelState *s;
581 uint32_t saddr;
582 uint32_t ret;
583 int channel;
584
585 saddr = (addr >> serial->it_shift) & 1;
586 channel = (addr >> (serial->it_shift + 1)) & 1;
587 s = &serial->chn[channel];
588 switch (saddr) {
589 case SERIAL_CTRL:
590 trace_escc_mem_readb_ctrl(CHN_C(s), s->reg, s->rregs[s->reg]);
591 ret = s->rregs[s->reg];
592 s->reg = 0;
593 return ret;
594 case SERIAL_DATA:
595 s->rregs[R_STATUS] &= ~STATUS_RXAV;
596 clr_rxint(s);
597 if (s->type == kbd || s->type == mouse)
598 ret = get_queue(s);
599 else
600 ret = s->rx;
601 trace_escc_mem_readb_data(CHN_C(s), ret);
602 qemu_chr_fe_accept_input(&s->chr);
603 return ret;
604 default:
605 break;
606 }
607 return 0;
608 }
609
610 static const MemoryRegionOps escc_mem_ops = {
611 .read = escc_mem_read,
612 .write = escc_mem_write,
613 .endianness = DEVICE_NATIVE_ENDIAN,
614 .valid = {
615 .min_access_size = 1,
616 .max_access_size = 1,
617 },
618 };
619
620 static int serial_can_receive(void *opaque)
621 {
622 ChannelState *s = opaque;
623 int ret;
624
625 if (((s->wregs[W_RXCTRL] & RXCTRL_RXEN) == 0) // Rx not enabled
626 || ((s->rregs[R_STATUS] & STATUS_RXAV) == STATUS_RXAV))
627 // char already available
628 ret = 0;
629 else
630 ret = 1;
631 return ret;
632 }
633
634 static void serial_receive_byte(ChannelState *s, int ch)
635 {
636 trace_escc_serial_receive_byte(CHN_C(s), ch);
637 s->rregs[R_STATUS] |= STATUS_RXAV;
638 s->rx = ch;
639 set_rxint(s);
640 }
641
642 static void serial_receive_break(ChannelState *s)
643 {
644 s->rregs[R_STATUS] |= STATUS_BRK;
645 escc_update_irq(s);
646 }
647
648 static void serial_receive1(void *opaque, const uint8_t *buf, int size)
649 {
650 ChannelState *s = opaque;
651 serial_receive_byte(s, buf[0]);
652 }
653
654 static void serial_event(void *opaque, int event)
655 {
656 ChannelState *s = opaque;
657 if (event == CHR_EVENT_BREAK)
658 serial_receive_break(s);
659 }
660
661 static const VMStateDescription vmstate_escc_chn = {
662 .name ="escc_chn",
663 .version_id = 2,
664 .minimum_version_id = 1,
665 .fields = (VMStateField[]) {
666 VMSTATE_UINT32(vmstate_dummy, ChannelState),
667 VMSTATE_UINT32(reg, ChannelState),
668 VMSTATE_UINT32(rxint, ChannelState),
669 VMSTATE_UINT32(txint, ChannelState),
670 VMSTATE_UINT32(rxint_under_svc, ChannelState),
671 VMSTATE_UINT32(txint_under_svc, ChannelState),
672 VMSTATE_UINT8(rx, ChannelState),
673 VMSTATE_UINT8(tx, ChannelState),
674 VMSTATE_BUFFER(wregs, ChannelState),
675 VMSTATE_BUFFER(rregs, ChannelState),
676 VMSTATE_END_OF_LIST()
677 }
678 };
679
680 static const VMStateDescription vmstate_escc = {
681 .name ="escc",
682 .version_id = 2,
683 .minimum_version_id = 1,
684 .fields = (VMStateField[]) {
685 VMSTATE_STRUCT_ARRAY(chn, ESCCState, 2, 2, vmstate_escc_chn,
686 ChannelState),
687 VMSTATE_END_OF_LIST()
688 }
689 };
690
691 MemoryRegion *escc_init(hwaddr base, qemu_irq irqA, qemu_irq irqB,
692 Chardev *chrA, Chardev *chrB,
693 int clock, int it_shift)
694 {
695 DeviceState *dev;
696 SysBusDevice *s;
697 ESCCState *d;
698
699 dev = qdev_create(NULL, TYPE_ESCC);
700 qdev_prop_set_uint32(dev, "disabled", 0);
701 qdev_prop_set_uint32(dev, "frequency", clock);
702 qdev_prop_set_uint32(dev, "it_shift", it_shift);
703 qdev_prop_set_chr(dev, "chrB", chrB);
704 qdev_prop_set_chr(dev, "chrA", chrA);
705 qdev_prop_set_uint32(dev, "chnBtype", ser);
706 qdev_prop_set_uint32(dev, "chnAtype", ser);
707 qdev_init_nofail(dev);
708 s = SYS_BUS_DEVICE(dev);
709 sysbus_connect_irq(s, 0, irqB);
710 sysbus_connect_irq(s, 1, irqA);
711 if (base) {
712 sysbus_mmio_map(s, 0, base);
713 }
714
715 d = ESCC(s);
716 return &d->mmio;
717 }
718
719 static const uint8_t qcode_to_keycode[Q_KEY_CODE__MAX] = {
720 [Q_KEY_CODE_SHIFT] = 99,
721 [Q_KEY_CODE_SHIFT_R] = 110,
722 [Q_KEY_CODE_ALT] = 19,
723 [Q_KEY_CODE_ALT_R] = 13,
724 [Q_KEY_CODE_ALTGR] = 13,
725 [Q_KEY_CODE_CTRL] = 76,
726 [Q_KEY_CODE_CTRL_R] = 76,
727 [Q_KEY_CODE_ESC] = 29,
728 [Q_KEY_CODE_1] = 30,
729 [Q_KEY_CODE_2] = 31,
730 [Q_KEY_CODE_3] = 32,
731 [Q_KEY_CODE_4] = 33,
732 [Q_KEY_CODE_5] = 34,
733 [Q_KEY_CODE_6] = 35,
734 [Q_KEY_CODE_7] = 36,
735 [Q_KEY_CODE_8] = 37,
736 [Q_KEY_CODE_9] = 38,
737 [Q_KEY_CODE_0] = 39,
738 [Q_KEY_CODE_MINUS] = 40,
739 [Q_KEY_CODE_EQUAL] = 41,
740 [Q_KEY_CODE_BACKSPACE] = 43,
741 [Q_KEY_CODE_TAB] = 53,
742 [Q_KEY_CODE_Q] = 54,
743 [Q_KEY_CODE_W] = 55,
744 [Q_KEY_CODE_E] = 56,
745 [Q_KEY_CODE_R] = 57,
746 [Q_KEY_CODE_T] = 58,
747 [Q_KEY_CODE_Y] = 59,
748 [Q_KEY_CODE_U] = 60,
749 [Q_KEY_CODE_I] = 61,
750 [Q_KEY_CODE_O] = 62,
751 [Q_KEY_CODE_P] = 63,
752 [Q_KEY_CODE_BRACKET_LEFT] = 64,
753 [Q_KEY_CODE_BRACKET_RIGHT] = 65,
754 [Q_KEY_CODE_RET] = 89,
755 [Q_KEY_CODE_A] = 77,
756 [Q_KEY_CODE_S] = 78,
757 [Q_KEY_CODE_D] = 79,
758 [Q_KEY_CODE_F] = 80,
759 [Q_KEY_CODE_G] = 81,
760 [Q_KEY_CODE_H] = 82,
761 [Q_KEY_CODE_J] = 83,
762 [Q_KEY_CODE_K] = 84,
763 [Q_KEY_CODE_L] = 85,
764 [Q_KEY_CODE_SEMICOLON] = 86,
765 [Q_KEY_CODE_APOSTROPHE] = 87,
766 [Q_KEY_CODE_GRAVE_ACCENT] = 42,
767 [Q_KEY_CODE_BACKSLASH] = 88,
768 [Q_KEY_CODE_Z] = 100,
769 [Q_KEY_CODE_X] = 101,
770 [Q_KEY_CODE_C] = 102,
771 [Q_KEY_CODE_V] = 103,
772 [Q_KEY_CODE_B] = 104,
773 [Q_KEY_CODE_N] = 105,
774 [Q_KEY_CODE_M] = 106,
775 [Q_KEY_CODE_COMMA] = 107,
776 [Q_KEY_CODE_DOT] = 108,
777 [Q_KEY_CODE_SLASH] = 109,
778 [Q_KEY_CODE_ASTERISK] = 47,
779 [Q_KEY_CODE_SPC] = 121,
780 [Q_KEY_CODE_CAPS_LOCK] = 119,
781 [Q_KEY_CODE_F1] = 5,
782 [Q_KEY_CODE_F2] = 6,
783 [Q_KEY_CODE_F3] = 8,
784 [Q_KEY_CODE_F4] = 10,
785 [Q_KEY_CODE_F5] = 12,
786 [Q_KEY_CODE_F6] = 14,
787 [Q_KEY_CODE_F7] = 16,
788 [Q_KEY_CODE_F8] = 17,
789 [Q_KEY_CODE_F9] = 18,
790 [Q_KEY_CODE_F10] = 7,
791 [Q_KEY_CODE_NUM_LOCK] = 98,
792 [Q_KEY_CODE_SCROLL_LOCK] = 23,
793 [Q_KEY_CODE_KP_DIVIDE] = 46,
794 [Q_KEY_CODE_KP_MULTIPLY] = 47,
795 [Q_KEY_CODE_KP_SUBTRACT] = 71,
796 [Q_KEY_CODE_KP_ADD] = 125,
797 [Q_KEY_CODE_KP_ENTER] = 90,
798 [Q_KEY_CODE_KP_DECIMAL] = 50,
799 [Q_KEY_CODE_KP_0] = 94,
800 [Q_KEY_CODE_KP_1] = 112,
801 [Q_KEY_CODE_KP_2] = 113,
802 [Q_KEY_CODE_KP_3] = 114,
803 [Q_KEY_CODE_KP_4] = 91,
804 [Q_KEY_CODE_KP_5] = 92,
805 [Q_KEY_CODE_KP_6] = 93,
806 [Q_KEY_CODE_KP_7] = 68,
807 [Q_KEY_CODE_KP_8] = 69,
808 [Q_KEY_CODE_KP_9] = 70,
809 [Q_KEY_CODE_LESS] = 124,
810 [Q_KEY_CODE_F11] = 9,
811 [Q_KEY_CODE_F12] = 11,
812 [Q_KEY_CODE_HOME] = 52,
813 [Q_KEY_CODE_PGUP] = 96,
814 [Q_KEY_CODE_PGDN] = 123,
815 [Q_KEY_CODE_END] = 74,
816 [Q_KEY_CODE_LEFT] = 24,
817 [Q_KEY_CODE_UP] = 20,
818 [Q_KEY_CODE_DOWN] = 27,
819 [Q_KEY_CODE_RIGHT] = 28,
820 [Q_KEY_CODE_INSERT] = 44,
821 [Q_KEY_CODE_DELETE] = 66,
822 [Q_KEY_CODE_STOP] = 1,
823 [Q_KEY_CODE_AGAIN] = 3,
824 [Q_KEY_CODE_PROPS] = 25,
825 [Q_KEY_CODE_UNDO] = 26,
826 [Q_KEY_CODE_FRONT] = 49,
827 [Q_KEY_CODE_COPY] = 51,
828 [Q_KEY_CODE_OPEN] = 72,
829 [Q_KEY_CODE_PASTE] = 73,
830 [Q_KEY_CODE_FIND] = 95,
831 [Q_KEY_CODE_CUT] = 97,
832 [Q_KEY_CODE_LF] = 111,
833 [Q_KEY_CODE_HELP] = 118,
834 [Q_KEY_CODE_META_L] = 120,
835 [Q_KEY_CODE_META_R] = 122,
836 [Q_KEY_CODE_COMPOSE] = 67,
837 [Q_KEY_CODE_PRINT] = 22,
838 [Q_KEY_CODE_SYSRQ] = 21,
839 };
840
841 static void sunkbd_handle_event(DeviceState *dev, QemuConsole *src,
842 InputEvent *evt)
843 {
844 ChannelState *s = (ChannelState *)dev;
845 int qcode, keycode;
846 InputKeyEvent *key;
847
848 assert(evt->type == INPUT_EVENT_KIND_KEY);
849 key = evt->u.key.data;
850 qcode = qemu_input_key_value_to_qcode(key->key);
851 trace_escc_sunkbd_event_in(qcode, QKeyCode_lookup[qcode],
852 key->down);
853
854 if (qcode == Q_KEY_CODE_CAPS_LOCK) {
855 if (key->down) {
856 s->caps_lock_mode ^= 1;
857 if (s->caps_lock_mode == 2) {
858 return; /* Drop second press */
859 }
860 } else {
861 s->caps_lock_mode ^= 2;
862 if (s->caps_lock_mode == 3) {
863 return; /* Drop first release */
864 }
865 }
866 }
867
868 if (qcode == Q_KEY_CODE_NUM_LOCK) {
869 if (key->down) {
870 s->num_lock_mode ^= 1;
871 if (s->num_lock_mode == 2) {
872 return; /* Drop second press */
873 }
874 } else {
875 s->num_lock_mode ^= 2;
876 if (s->num_lock_mode == 3) {
877 return; /* Drop first release */
878 }
879 }
880 }
881
882 keycode = qcode_to_keycode[qcode];
883 if (!key->down) {
884 keycode |= 0x80;
885 }
886 trace_escc_sunkbd_event_out(keycode);
887 put_queue(s, keycode);
888 }
889
890 static QemuInputHandler sunkbd_handler = {
891 .name = "sun keyboard",
892 .mask = INPUT_EVENT_MASK_KEY,
893 .event = sunkbd_handle_event,
894 };
895
896 static void handle_kbd_command(ChannelState *s, int val)
897 {
898 trace_escc_kbd_command(val);
899 if (s->led_mode) { // Ignore led byte
900 s->led_mode = 0;
901 return;
902 }
903 switch (val) {
904 case 1: // Reset, return type code
905 clear_queue(s);
906 put_queue(s, 0xff);
907 put_queue(s, 4); // Type 4
908 put_queue(s, 0x7f);
909 break;
910 case 0xe: // Set leds
911 s->led_mode = 1;
912 break;
913 case 7: // Query layout
914 case 0xf:
915 clear_queue(s);
916 put_queue(s, 0xfe);
917 put_queue(s, 0x21); /* en-us layout */
918 break;
919 default:
920 break;
921 }
922 }
923
924 static void sunmouse_event(void *opaque,
925 int dx, int dy, int dz, int buttons_state)
926 {
927 ChannelState *s = opaque;
928 int ch;
929
930 trace_escc_sunmouse_event(dx, dy, buttons_state);
931 ch = 0x80 | 0x7; /* protocol start byte, no buttons pressed */
932
933 if (buttons_state & MOUSE_EVENT_LBUTTON)
934 ch ^= 0x4;
935 if (buttons_state & MOUSE_EVENT_MBUTTON)
936 ch ^= 0x2;
937 if (buttons_state & MOUSE_EVENT_RBUTTON)
938 ch ^= 0x1;
939
940 put_queue(s, ch);
941
942 ch = dx;
943
944 if (ch > 127)
945 ch = 127;
946 else if (ch < -127)
947 ch = -127;
948
949 put_queue(s, ch & 0xff);
950
951 ch = -dy;
952
953 if (ch > 127)
954 ch = 127;
955 else if (ch < -127)
956 ch = -127;
957
958 put_queue(s, ch & 0xff);
959
960 // MSC protocol specify two extra motion bytes
961
962 put_queue(s, 0);
963 put_queue(s, 0);
964 }
965
966 void slavio_serial_ms_kbd_init(hwaddr base, qemu_irq irq,
967 int disabled, int clock, int it_shift)
968 {
969 DeviceState *dev;
970 SysBusDevice *s;
971
972 dev = qdev_create(NULL, TYPE_ESCC);
973 qdev_prop_set_uint32(dev, "disabled", disabled);
974 qdev_prop_set_uint32(dev, "frequency", clock);
975 qdev_prop_set_uint32(dev, "it_shift", it_shift);
976 qdev_prop_set_chr(dev, "chrB", NULL);
977 qdev_prop_set_chr(dev, "chrA", NULL);
978 qdev_prop_set_uint32(dev, "chnBtype", mouse);
979 qdev_prop_set_uint32(dev, "chnAtype", kbd);
980 qdev_init_nofail(dev);
981 s = SYS_BUS_DEVICE(dev);
982 sysbus_connect_irq(s, 0, irq);
983 sysbus_connect_irq(s, 1, irq);
984 sysbus_mmio_map(s, 0, base);
985 }
986
987 static void escc_init1(Object *obj)
988 {
989 ESCCState *s = ESCC(obj);
990 SysBusDevice *dev = SYS_BUS_DEVICE(obj);
991 unsigned int i;
992
993 for (i = 0; i < 2; i++) {
994 sysbus_init_irq(dev, &s->chn[i].irq);
995 s->chn[i].chn = 1 - i;
996 }
997 s->chn[0].otherchn = &s->chn[1];
998 s->chn[1].otherchn = &s->chn[0];
999
1000 sysbus_init_mmio(dev, &s->mmio);
1001 }
1002
1003 static void escc_realize(DeviceState *dev, Error **errp)
1004 {
1005 ESCCState *s = ESCC(dev);
1006 unsigned int i;
1007
1008 s->chn[0].disabled = s->disabled;
1009 s->chn[1].disabled = s->disabled;
1010
1011 memory_region_init_io(&s->mmio, OBJECT(dev), &escc_mem_ops, s, "escc",
1012 ESCC_SIZE << s->it_shift);
1013
1014 for (i = 0; i < 2; i++) {
1015 if (qemu_chr_fe_get_driver(&s->chn[i].chr)) {
1016 s->chn[i].clock = s->frequency / 2;
1017 qemu_chr_fe_set_handlers(&s->chn[i].chr, serial_can_receive,
1018 serial_receive1, serial_event,
1019 &s->chn[i], NULL, true);
1020 }
1021 }
1022
1023 if (s->chn[0].type == mouse) {
1024 qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0,
1025 "QEMU Sun Mouse");
1026 }
1027 if (s->chn[1].type == kbd) {
1028 s->chn[1].hs = qemu_input_handler_register((DeviceState *)(&s->chn[1]),
1029 &sunkbd_handler);
1030 }
1031 }
1032
1033 static Property escc_properties[] = {
1034 DEFINE_PROP_UINT32("frequency", ESCCState, frequency, 0),
1035 DEFINE_PROP_UINT32("it_shift", ESCCState, it_shift, 0),
1036 DEFINE_PROP_UINT32("disabled", ESCCState, disabled, 0),
1037 DEFINE_PROP_UINT32("chnBtype", ESCCState, chn[0].type, 0),
1038 DEFINE_PROP_UINT32("chnAtype", ESCCState, chn[1].type, 0),
1039 DEFINE_PROP_CHR("chrB", ESCCState, chn[0].chr),
1040 DEFINE_PROP_CHR("chrA", ESCCState, chn[1].chr),
1041 DEFINE_PROP_END_OF_LIST(),
1042 };
1043
1044 static void escc_class_init(ObjectClass *klass, void *data)
1045 {
1046 DeviceClass *dc = DEVICE_CLASS(klass);
1047
1048 dc->reset = escc_reset;
1049 dc->realize = escc_realize;
1050 dc->vmsd = &vmstate_escc;
1051 dc->props = escc_properties;
1052 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1053 }
1054
1055 static const TypeInfo escc_info = {
1056 .name = TYPE_ESCC,
1057 .parent = TYPE_SYS_BUS_DEVICE,
1058 .instance_size = sizeof(ESCCState),
1059 .instance_init = escc_init1,
1060 .class_init = escc_class_init,
1061 };
1062
1063 static void escc_register_types(void)
1064 {
1065 type_register_static(&escc_info);
1066 }
1067
1068 type_init(escc_register_types)
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