root / hw / slavio_serial.c @ 22548760
History | View | Annotate | Download (25.1 kB)
| 1 |
/*
|
|---|---|
| 2 |
* QEMU Sparc SLAVIO 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 |
#include "hw.h" |
| 25 |
#include "sun4m.h" |
| 26 |
#include "qemu-char.h" |
| 27 |
#include "console.h" |
| 28 |
|
| 29 |
/* debug serial */
|
| 30 |
//#define DEBUG_SERIAL
|
| 31 |
|
| 32 |
/* debug keyboard */
|
| 33 |
//#define DEBUG_KBD
|
| 34 |
|
| 35 |
/* debug mouse */
|
| 36 |
//#define DEBUG_MOUSE
|
| 37 |
|
| 38 |
/*
|
| 39 |
* 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 |
*/
|
| 48 |
|
| 49 |
/*
|
| 50 |
* Modifications:
|
| 51 |
* 2006-Aug-10 Igor Kovalenko : Renamed KBDQueue to SERIOQueue, implemented
|
| 52 |
* serial mouse queue.
|
| 53 |
* Implemented serial mouse protocol.
|
| 54 |
*/
|
| 55 |
|
| 56 |
#ifdef DEBUG_SERIAL
|
| 57 |
#define SER_DPRINTF(fmt, args...) \
|
| 58 |
do { printf("SER: " fmt , ##args); } while (0) |
| 59 |
#else
|
| 60 |
#define SER_DPRINTF(fmt, args...)
|
| 61 |
#endif
|
| 62 |
#ifdef DEBUG_KBD
|
| 63 |
#define KBD_DPRINTF(fmt, args...) \
|
| 64 |
do { printf("KBD: " fmt , ##args); } while (0) |
| 65 |
#else
|
| 66 |
#define KBD_DPRINTF(fmt, args...)
|
| 67 |
#endif
|
| 68 |
#ifdef DEBUG_MOUSE
|
| 69 |
#define MS_DPRINTF(fmt, args...) \
|
| 70 |
do { printf("MSC: " fmt , ##args); } while (0) |
| 71 |
#else
|
| 72 |
#define MS_DPRINTF(fmt, args...)
|
| 73 |
#endif
|
| 74 |
|
| 75 |
typedef enum { |
| 76 |
chn_a, chn_b, |
| 77 |
} chn_id_t; |
| 78 |
|
| 79 |
#define CHN_C(s) ((s)->chn == chn_b? 'b' : 'a') |
| 80 |
|
| 81 |
typedef enum { |
| 82 |
ser, kbd, mouse, |
| 83 |
} chn_type_t; |
| 84 |
|
| 85 |
#define SERIO_QUEUE_SIZE 256 |
| 86 |
|
| 87 |
typedef struct { |
| 88 |
uint8_t data[SERIO_QUEUE_SIZE]; |
| 89 |
int rptr, wptr, count;
|
| 90 |
} SERIOQueue; |
| 91 |
|
| 92 |
#define SERIAL_REGS 16 |
| 93 |
typedef struct ChannelState { |
| 94 |
qemu_irq irq; |
| 95 |
uint32_t reg; |
| 96 |
uint32_t rxint, txint, rxint_under_svc, txint_under_svc; |
| 97 |
chn_id_t chn; // this channel, A (base+4) or B (base+0)
|
| 98 |
chn_type_t type; |
| 99 |
struct ChannelState *otherchn;
|
| 100 |
uint8_t rx, tx, wregs[SERIAL_REGS], rregs[SERIAL_REGS]; |
| 101 |
SERIOQueue queue; |
| 102 |
CharDriverState *chr; |
| 103 |
int e0_mode, led_mode, caps_lock_mode, num_lock_mode;
|
| 104 |
int disabled;
|
| 105 |
} ChannelState; |
| 106 |
|
| 107 |
struct SerialState {
|
| 108 |
struct ChannelState chn[2]; |
| 109 |
}; |
| 110 |
|
| 111 |
#define SERIAL_MAXADDR 7 |
| 112 |
#define SERIAL_SIZE (SERIAL_MAXADDR + 1) |
| 113 |
#define SERIAL_CTRL 0 |
| 114 |
#define SERIAL_DATA 1 |
| 115 |
|
| 116 |
#define W_CMD 0 |
| 117 |
#define CMD_PTR_MASK 0x07 |
| 118 |
#define CMD_CMD_MASK 0x38 |
| 119 |
#define CMD_HI 0x08 |
| 120 |
#define CMD_CLR_TXINT 0x28 |
| 121 |
#define CMD_CLR_IUS 0x38 |
| 122 |
#define W_INTR 1 |
| 123 |
#define INTR_INTALL 0x01 |
| 124 |
#define INTR_TXINT 0x02 |
| 125 |
#define INTR_RXMODEMSK 0x18 |
| 126 |
#define INTR_RXINT1ST 0x08 |
| 127 |
#define INTR_RXINTALL 0x10 |
| 128 |
#define W_IVEC 2 |
| 129 |
#define W_RXCTRL 3 |
| 130 |
#define RXCTRL_RXEN 0x01 |
| 131 |
#define W_TXCTRL1 4 |
| 132 |
#define TXCTRL1_PAREN 0x01 |
| 133 |
#define TXCTRL1_PAREV 0x02 |
| 134 |
#define TXCTRL1_1STOP 0x04 |
| 135 |
#define TXCTRL1_1HSTOP 0x08 |
| 136 |
#define TXCTRL1_2STOP 0x0c |
| 137 |
#define TXCTRL1_STPMSK 0x0c |
| 138 |
#define TXCTRL1_CLK1X 0x00 |
| 139 |
#define TXCTRL1_CLK16X 0x40 |
| 140 |
#define TXCTRL1_CLK32X 0x80 |
| 141 |
#define TXCTRL1_CLK64X 0xc0 |
| 142 |
#define TXCTRL1_CLKMSK 0xc0 |
| 143 |
#define W_TXCTRL2 5 |
| 144 |
#define TXCTRL2_TXEN 0x08 |
| 145 |
#define TXCTRL2_BITMSK 0x60 |
| 146 |
#define TXCTRL2_5BITS 0x00 |
| 147 |
#define TXCTRL2_7BITS 0x20 |
| 148 |
#define TXCTRL2_6BITS 0x40 |
| 149 |
#define TXCTRL2_8BITS 0x60 |
| 150 |
#define W_SYNC1 6 |
| 151 |
#define W_SYNC2 7 |
| 152 |
#define W_TXBUF 8 |
| 153 |
#define W_MINTR 9 |
| 154 |
#define MINTR_STATUSHI 0x10 |
| 155 |
#define MINTR_RST_MASK 0xc0 |
| 156 |
#define MINTR_RST_B 0x40 |
| 157 |
#define MINTR_RST_A 0x80 |
| 158 |
#define MINTR_RST_ALL 0xc0 |
| 159 |
#define W_MISC1 10 |
| 160 |
#define W_CLOCK 11 |
| 161 |
#define CLOCK_TRXC 0x08 |
| 162 |
#define W_BRGLO 12 |
| 163 |
#define W_BRGHI 13 |
| 164 |
#define W_MISC2 14 |
| 165 |
#define MISC2_PLLDIS 0x30 |
| 166 |
#define W_EXTINT 15 |
| 167 |
#define EXTINT_DCD 0x08 |
| 168 |
#define EXTINT_SYNCINT 0x10 |
| 169 |
#define EXTINT_CTSINT 0x20 |
| 170 |
#define EXTINT_TXUNDRN 0x40 |
| 171 |
#define EXTINT_BRKINT 0x80 |
| 172 |
|
| 173 |
#define R_STATUS 0 |
| 174 |
#define STATUS_RXAV 0x01 |
| 175 |
#define STATUS_ZERO 0x02 |
| 176 |
#define STATUS_TXEMPTY 0x04 |
| 177 |
#define STATUS_DCD 0x08 |
| 178 |
#define STATUS_SYNC 0x10 |
| 179 |
#define STATUS_CTS 0x20 |
| 180 |
#define STATUS_TXUNDRN 0x40 |
| 181 |
#define STATUS_BRK 0x80 |
| 182 |
#define R_SPEC 1 |
| 183 |
#define SPEC_ALLSENT 0x01 |
| 184 |
#define SPEC_BITS8 0x06 |
| 185 |
#define R_IVEC 2 |
| 186 |
#define IVEC_TXINTB 0x00 |
| 187 |
#define IVEC_LONOINT 0x06 |
| 188 |
#define IVEC_LORXINTA 0x0c |
| 189 |
#define IVEC_LORXINTB 0x04 |
| 190 |
#define IVEC_LOTXINTA 0x08 |
| 191 |
#define IVEC_HINOINT 0x60 |
| 192 |
#define IVEC_HIRXINTA 0x30 |
| 193 |
#define IVEC_HIRXINTB 0x20 |
| 194 |
#define IVEC_HITXINTA 0x10 |
| 195 |
#define R_INTR 3 |
| 196 |
#define INTR_EXTINTB 0x01 |
| 197 |
#define INTR_TXINTB 0x02 |
| 198 |
#define INTR_RXINTB 0x04 |
| 199 |
#define INTR_EXTINTA 0x08 |
| 200 |
#define INTR_TXINTA 0x10 |
| 201 |
#define INTR_RXINTA 0x20 |
| 202 |
#define R_IPEN 4 |
| 203 |
#define R_TXCTRL1 5 |
| 204 |
#define R_TXCTRL2 6 |
| 205 |
#define R_BC 7 |
| 206 |
#define R_RXBUF 8 |
| 207 |
#define R_RXCTRL 9 |
| 208 |
#define R_MISC 10 |
| 209 |
#define R_MISC1 11 |
| 210 |
#define R_BRGLO 12 |
| 211 |
#define R_BRGHI 13 |
| 212 |
#define R_MISC1I 14 |
| 213 |
#define R_EXTINT 15 |
| 214 |
|
| 215 |
static void handle_kbd_command(ChannelState *s, int val); |
| 216 |
static int serial_can_receive(void *opaque); |
| 217 |
static void serial_receive_byte(ChannelState *s, int ch); |
| 218 |
|
| 219 |
static void clear_queue(void *opaque) |
| 220 |
{
|
| 221 |
ChannelState *s = opaque; |
| 222 |
SERIOQueue *q = &s->queue; |
| 223 |
q->rptr = q->wptr = q->count = 0;
|
| 224 |
} |
| 225 |
|
| 226 |
static void put_queue(void *opaque, int b) |
| 227 |
{
|
| 228 |
ChannelState *s = opaque; |
| 229 |
SERIOQueue *q = &s->queue; |
| 230 |
|
| 231 |
SER_DPRINTF("channel %c put: 0x%02x\n", CHN_C(s), b);
|
| 232 |
if (q->count >= SERIO_QUEUE_SIZE)
|
| 233 |
return;
|
| 234 |
q->data[q->wptr] = b; |
| 235 |
if (++q->wptr == SERIO_QUEUE_SIZE)
|
| 236 |
q->wptr = 0;
|
| 237 |
q->count++; |
| 238 |
serial_receive_byte(s, 0);
|
| 239 |
} |
| 240 |
|
| 241 |
static uint32_t get_queue(void *opaque) |
| 242 |
{
|
| 243 |
ChannelState *s = opaque; |
| 244 |
SERIOQueue *q = &s->queue; |
| 245 |
int val;
|
| 246 |
|
| 247 |
if (q->count == 0) { |
| 248 |
return 0; |
| 249 |
} else {
|
| 250 |
val = q->data[q->rptr]; |
| 251 |
if (++q->rptr == SERIO_QUEUE_SIZE)
|
| 252 |
q->rptr = 0;
|
| 253 |
q->count--; |
| 254 |
} |
| 255 |
SER_DPRINTF("channel %c get 0x%02x\n", CHN_C(s), val);
|
| 256 |
if (q->count > 0) |
| 257 |
serial_receive_byte(s, 0);
|
| 258 |
return val;
|
| 259 |
} |
| 260 |
|
| 261 |
static int slavio_serial_update_irq_chn(ChannelState *s) |
| 262 |
{
|
| 263 |
if ((s->wregs[W_INTR] & INTR_INTALL) && // interrupts enabled |
| 264 |
(((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 slavio_serial_update_irq(ChannelState *s) |
| 277 |
{
|
| 278 |
int irq;
|
| 279 |
|
| 280 |
irq = slavio_serial_update_irq_chn(s); |
| 281 |
irq |= slavio_serial_update_irq_chn(s->otherchn); |
| 282 |
|
| 283 |
SER_DPRINTF("IRQ = %d\n", irq);
|
| 284 |
qemu_set_irq(s->irq, irq); |
| 285 |
} |
| 286 |
|
| 287 |
static void slavio_serial_reset_chn(ChannelState *s) |
| 288 |
{
|
| 289 |
int i;
|
| 290 |
|
| 291 |
s->reg = 0;
|
| 292 |
for (i = 0; i < SERIAL_SIZE; 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 slavio_serial_reset(void *opaque) |
| 317 |
{
|
| 318 |
SerialState *s = opaque; |
| 319 |
slavio_serial_reset_chn(&s->chn[0]);
|
| 320 |
slavio_serial_reset_chn(&s->chn[1]);
|
| 321 |
} |
| 322 |
|
| 323 |
static inline void set_rxint(ChannelState *s) |
| 324 |
{
|
| 325 |
s->rxint = 1;
|
| 326 |
if (!s->txint_under_svc) {
|
| 327 |
s->rxint_under_svc = 1;
|
| 328 |
if (s->chn == chn_a) {
|
| 329 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 330 |
s->otherchn->rregs[R_IVEC] = IVEC_HIRXINTA; |
| 331 |
else
|
| 332 |
s->otherchn->rregs[R_IVEC] = IVEC_LORXINTA; |
| 333 |
} else {
|
| 334 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 335 |
s->rregs[R_IVEC] = IVEC_HIRXINTB; |
| 336 |
else
|
| 337 |
s->rregs[R_IVEC] = IVEC_LORXINTB; |
| 338 |
} |
| 339 |
} |
| 340 |
if (s->chn == chn_a)
|
| 341 |
s->rregs[R_INTR] |= INTR_RXINTA; |
| 342 |
else
|
| 343 |
s->otherchn->rregs[R_INTR] |= INTR_RXINTB; |
| 344 |
slavio_serial_update_irq(s); |
| 345 |
} |
| 346 |
|
| 347 |
static inline void set_txint(ChannelState *s) |
| 348 |
{
|
| 349 |
s->txint = 1;
|
| 350 |
if (!s->rxint_under_svc) {
|
| 351 |
s->txint_under_svc = 1;
|
| 352 |
if (s->chn == chn_a) {
|
| 353 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 354 |
s->otherchn->rregs[R_IVEC] = IVEC_HITXINTA; |
| 355 |
else
|
| 356 |
s->otherchn->rregs[R_IVEC] = IVEC_LOTXINTA; |
| 357 |
} else {
|
| 358 |
s->rregs[R_IVEC] = IVEC_TXINTB; |
| 359 |
} |
| 360 |
} |
| 361 |
if (s->chn == chn_a)
|
| 362 |
s->rregs[R_INTR] |= INTR_TXINTA; |
| 363 |
else
|
| 364 |
s->otherchn->rregs[R_INTR] |= INTR_TXINTB; |
| 365 |
slavio_serial_update_irq(s); |
| 366 |
} |
| 367 |
|
| 368 |
static inline void clr_rxint(ChannelState *s) |
| 369 |
{
|
| 370 |
s->rxint = 0;
|
| 371 |
s->rxint_under_svc = 0;
|
| 372 |
if (s->chn == chn_a) {
|
| 373 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 374 |
s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| 375 |
else
|
| 376 |
s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| 377 |
s->rregs[R_INTR] &= ~INTR_RXINTA; |
| 378 |
} else {
|
| 379 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 380 |
s->rregs[R_IVEC] = IVEC_HINOINT; |
| 381 |
else
|
| 382 |
s->rregs[R_IVEC] = IVEC_LONOINT; |
| 383 |
s->otherchn->rregs[R_INTR] &= ~INTR_RXINTB; |
| 384 |
} |
| 385 |
if (s->txint)
|
| 386 |
set_txint(s); |
| 387 |
slavio_serial_update_irq(s); |
| 388 |
} |
| 389 |
|
| 390 |
static inline void clr_txint(ChannelState *s) |
| 391 |
{
|
| 392 |
s->txint = 0;
|
| 393 |
s->txint_under_svc = 0;
|
| 394 |
if (s->chn == chn_a) {
|
| 395 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 396 |
s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| 397 |
else
|
| 398 |
s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| 399 |
s->rregs[R_INTR] &= ~INTR_TXINTA; |
| 400 |
} else {
|
| 401 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 402 |
s->rregs[R_IVEC] = IVEC_HINOINT; |
| 403 |
else
|
| 404 |
s->rregs[R_IVEC] = IVEC_LONOINT; |
| 405 |
s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB; |
| 406 |
} |
| 407 |
if (s->rxint)
|
| 408 |
set_rxint(s); |
| 409 |
slavio_serial_update_irq(s); |
| 410 |
} |
| 411 |
|
| 412 |
static void slavio_serial_update_parameters(ChannelState *s) |
| 413 |
{
|
| 414 |
int speed, parity, data_bits, stop_bits;
|
| 415 |
QEMUSerialSetParams ssp; |
| 416 |
|
| 417 |
if (!s->chr || s->type != ser)
|
| 418 |
return;
|
| 419 |
|
| 420 |
if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREN) {
|
| 421 |
if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREV)
|
| 422 |
parity = 'E';
|
| 423 |
else
|
| 424 |
parity = 'O';
|
| 425 |
} else {
|
| 426 |
parity = 'N';
|
| 427 |
} |
| 428 |
if ((s->wregs[W_TXCTRL1] & TXCTRL1_STPMSK) == TXCTRL1_2STOP)
|
| 429 |
stop_bits = 2;
|
| 430 |
else
|
| 431 |
stop_bits = 1;
|
| 432 |
switch (s->wregs[W_TXCTRL2] & TXCTRL2_BITMSK) {
|
| 433 |
case TXCTRL2_5BITS:
|
| 434 |
data_bits = 5;
|
| 435 |
break;
|
| 436 |
case TXCTRL2_7BITS:
|
| 437 |
data_bits = 7;
|
| 438 |
break;
|
| 439 |
case TXCTRL2_6BITS:
|
| 440 |
data_bits = 6;
|
| 441 |
break;
|
| 442 |
default:
|
| 443 |
case TXCTRL2_8BITS:
|
| 444 |
data_bits = 8;
|
| 445 |
break;
|
| 446 |
} |
| 447 |
speed = 2457600 / ((s->wregs[W_BRGLO] | (s->wregs[W_BRGHI] << 8)) + 2); |
| 448 |
switch (s->wregs[W_TXCTRL1] & TXCTRL1_CLKMSK) {
|
| 449 |
case TXCTRL1_CLK1X:
|
| 450 |
break;
|
| 451 |
case TXCTRL1_CLK16X:
|
| 452 |
speed /= 16;
|
| 453 |
break;
|
| 454 |
case TXCTRL1_CLK32X:
|
| 455 |
speed /= 32;
|
| 456 |
break;
|
| 457 |
default:
|
| 458 |
case TXCTRL1_CLK64X:
|
| 459 |
speed /= 64;
|
| 460 |
break;
|
| 461 |
} |
| 462 |
ssp.speed = speed; |
| 463 |
ssp.parity = parity; |
| 464 |
ssp.data_bits = data_bits; |
| 465 |
ssp.stop_bits = stop_bits; |
| 466 |
SER_DPRINTF("channel %c: speed=%d parity=%c data=%d stop=%d\n", CHN_C(s),
|
| 467 |
speed, parity, data_bits, stop_bits); |
| 468 |
qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| 469 |
} |
| 470 |
|
| 471 |
static void slavio_serial_mem_writeb(void *opaque, target_phys_addr_t addr, |
| 472 |
uint32_t val) |
| 473 |
{
|
| 474 |
SerialState *serial = opaque; |
| 475 |
ChannelState *s; |
| 476 |
uint32_t saddr; |
| 477 |
int newreg, channel;
|
| 478 |
|
| 479 |
val &= 0xff;
|
| 480 |
saddr = (addr & 3) >> 1; |
| 481 |
channel = (addr & SERIAL_MAXADDR) >> 2;
|
| 482 |
s = &serial->chn[channel]; |
| 483 |
switch (saddr) {
|
| 484 |
case SERIAL_CTRL:
|
| 485 |
SER_DPRINTF("Write channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg,
|
| 486 |
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 |
clr_rxint(s); |
| 502 |
else if (s->txint_under_svc) |
| 503 |
clr_txint(s); |
| 504 |
break;
|
| 505 |
default:
|
| 506 |
break;
|
| 507 |
} |
| 508 |
break;
|
| 509 |
case W_INTR ... W_RXCTRL:
|
| 510 |
case W_SYNC1 ... W_TXBUF:
|
| 511 |
case W_MISC1 ... W_CLOCK:
|
| 512 |
case W_MISC2 ... W_EXTINT:
|
| 513 |
s->wregs[s->reg] = val; |
| 514 |
break;
|
| 515 |
case W_TXCTRL1:
|
| 516 |
case W_TXCTRL2:
|
| 517 |
s->wregs[s->reg] = val; |
| 518 |
slavio_serial_update_parameters(s); |
| 519 |
break;
|
| 520 |
case W_BRGLO:
|
| 521 |
case W_BRGHI:
|
| 522 |
s->wregs[s->reg] = val; |
| 523 |
s->rregs[s->reg] = val; |
| 524 |
slavio_serial_update_parameters(s); |
| 525 |
break;
|
| 526 |
case W_MINTR:
|
| 527 |
switch (val & MINTR_RST_MASK) {
|
| 528 |
case 0: |
| 529 |
default:
|
| 530 |
break;
|
| 531 |
case MINTR_RST_B:
|
| 532 |
slavio_serial_reset_chn(&serial->chn[1]);
|
| 533 |
return;
|
| 534 |
case MINTR_RST_A:
|
| 535 |
slavio_serial_reset_chn(&serial->chn[0]);
|
| 536 |
return;
|
| 537 |
case MINTR_RST_ALL:
|
| 538 |
slavio_serial_reset(serial); |
| 539 |
return;
|
| 540 |
} |
| 541 |
break;
|
| 542 |
default:
|
| 543 |
break;
|
| 544 |
} |
| 545 |
if (s->reg == 0) |
| 546 |
s->reg = newreg; |
| 547 |
else
|
| 548 |
s->reg = 0;
|
| 549 |
break;
|
| 550 |
case SERIAL_DATA:
|
| 551 |
SER_DPRINTF("Write channel %c, ch %d\n", CHN_C(s), val);
|
| 552 |
s->tx = val; |
| 553 |
if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { // tx enabled |
| 554 |
if (s->chr)
|
| 555 |
qemu_chr_write(s->chr, &s->tx, 1);
|
| 556 |
else if (s->type == kbd && !s->disabled) { |
| 557 |
handle_kbd_command(s, val); |
| 558 |
} |
| 559 |
} |
| 560 |
s->rregs[R_STATUS] |= STATUS_TXEMPTY; // Tx buffer empty
|
| 561 |
s->rregs[R_SPEC] |= SPEC_ALLSENT; // All sent
|
| 562 |
set_txint(s); |
| 563 |
break;
|
| 564 |
default:
|
| 565 |
break;
|
| 566 |
} |
| 567 |
} |
| 568 |
|
| 569 |
static uint32_t slavio_serial_mem_readb(void *opaque, target_phys_addr_t addr) |
| 570 |
{
|
| 571 |
SerialState *serial = opaque; |
| 572 |
ChannelState *s; |
| 573 |
uint32_t saddr; |
| 574 |
uint32_t ret; |
| 575 |
int channel;
|
| 576 |
|
| 577 |
saddr = (addr & 3) >> 1; |
| 578 |
channel = (addr & SERIAL_MAXADDR) >> 2;
|
| 579 |
s = &serial->chn[channel]; |
| 580 |
switch (saddr) {
|
| 581 |
case SERIAL_CTRL:
|
| 582 |
SER_DPRINTF("Read channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg,
|
| 583 |
s->rregs[s->reg]); |
| 584 |
ret = s->rregs[s->reg]; |
| 585 |
s->reg = 0;
|
| 586 |
return ret;
|
| 587 |
case SERIAL_DATA:
|
| 588 |
s->rregs[R_STATUS] &= ~STATUS_RXAV; |
| 589 |
clr_rxint(s); |
| 590 |
if (s->type == kbd || s->type == mouse)
|
| 591 |
ret = get_queue(s); |
| 592 |
else
|
| 593 |
ret = s->rx; |
| 594 |
SER_DPRINTF("Read channel %c, ch %d\n", CHN_C(s), ret);
|
| 595 |
if (s->chr)
|
| 596 |
qemu_chr_accept_input(s->chr); |
| 597 |
return ret;
|
| 598 |
default:
|
| 599 |
break;
|
| 600 |
} |
| 601 |
return 0; |
| 602 |
} |
| 603 |
|
| 604 |
static int serial_can_receive(void *opaque) |
| 605 |
{
|
| 606 |
ChannelState *s = opaque; |
| 607 |
int ret;
|
| 608 |
|
| 609 |
if (((s->wregs[W_RXCTRL] & RXCTRL_RXEN) == 0) // Rx not enabled |
| 610 |
|| ((s->rregs[R_STATUS] & STATUS_RXAV) == STATUS_RXAV)) |
| 611 |
// char already available
|
| 612 |
ret = 0;
|
| 613 |
else
|
| 614 |
ret = 1;
|
| 615 |
return ret;
|
| 616 |
} |
| 617 |
|
| 618 |
static void serial_receive_byte(ChannelState *s, int ch) |
| 619 |
{
|
| 620 |
SER_DPRINTF("channel %c put ch %d\n", CHN_C(s), ch);
|
| 621 |
s->rregs[R_STATUS] |= STATUS_RXAV; |
| 622 |
s->rx = ch; |
| 623 |
set_rxint(s); |
| 624 |
} |
| 625 |
|
| 626 |
static void serial_receive_break(ChannelState *s) |
| 627 |
{
|
| 628 |
s->rregs[R_STATUS] |= STATUS_BRK; |
| 629 |
slavio_serial_update_irq(s); |
| 630 |
} |
| 631 |
|
| 632 |
static void serial_receive1(void *opaque, const uint8_t *buf, int size) |
| 633 |
{
|
| 634 |
ChannelState *s = opaque; |
| 635 |
serial_receive_byte(s, buf[0]);
|
| 636 |
} |
| 637 |
|
| 638 |
static void serial_event(void *opaque, int event) |
| 639 |
{
|
| 640 |
ChannelState *s = opaque; |
| 641 |
if (event == CHR_EVENT_BREAK)
|
| 642 |
serial_receive_break(s); |
| 643 |
} |
| 644 |
|
| 645 |
static CPUReadMemoryFunc *slavio_serial_mem_read[3] = { |
| 646 |
slavio_serial_mem_readb, |
| 647 |
NULL,
|
| 648 |
NULL,
|
| 649 |
}; |
| 650 |
|
| 651 |
static CPUWriteMemoryFunc *slavio_serial_mem_write[3] = { |
| 652 |
slavio_serial_mem_writeb, |
| 653 |
NULL,
|
| 654 |
NULL,
|
| 655 |
}; |
| 656 |
|
| 657 |
static void slavio_serial_save_chn(QEMUFile *f, ChannelState *s) |
| 658 |
{
|
| 659 |
uint32_t tmp = 0;
|
| 660 |
|
| 661 |
qemu_put_be32s(f, &tmp); /* unused, was IRQ. */
|
| 662 |
qemu_put_be32s(f, &s->reg); |
| 663 |
qemu_put_be32s(f, &s->rxint); |
| 664 |
qemu_put_be32s(f, &s->txint); |
| 665 |
qemu_put_be32s(f, &s->rxint_under_svc); |
| 666 |
qemu_put_be32s(f, &s->txint_under_svc); |
| 667 |
qemu_put_8s(f, &s->rx); |
| 668 |
qemu_put_8s(f, &s->tx); |
| 669 |
qemu_put_buffer(f, s->wregs, SERIAL_REGS); |
| 670 |
qemu_put_buffer(f, s->rregs, SERIAL_REGS); |
| 671 |
} |
| 672 |
|
| 673 |
static void slavio_serial_save(QEMUFile *f, void *opaque) |
| 674 |
{
|
| 675 |
SerialState *s = opaque; |
| 676 |
|
| 677 |
slavio_serial_save_chn(f, &s->chn[0]);
|
| 678 |
slavio_serial_save_chn(f, &s->chn[1]);
|
| 679 |
} |
| 680 |
|
| 681 |
static int slavio_serial_load_chn(QEMUFile *f, ChannelState *s, int version_id) |
| 682 |
{
|
| 683 |
uint32_t tmp; |
| 684 |
|
| 685 |
if (version_id > 2) |
| 686 |
return -EINVAL;
|
| 687 |
|
| 688 |
qemu_get_be32s(f, &tmp); /* unused */
|
| 689 |
qemu_get_be32s(f, &s->reg); |
| 690 |
qemu_get_be32s(f, &s->rxint); |
| 691 |
qemu_get_be32s(f, &s->txint); |
| 692 |
if (version_id >= 2) { |
| 693 |
qemu_get_be32s(f, &s->rxint_under_svc); |
| 694 |
qemu_get_be32s(f, &s->txint_under_svc); |
| 695 |
} |
| 696 |
qemu_get_8s(f, &s->rx); |
| 697 |
qemu_get_8s(f, &s->tx); |
| 698 |
qemu_get_buffer(f, s->wregs, SERIAL_REGS); |
| 699 |
qemu_get_buffer(f, s->rregs, SERIAL_REGS); |
| 700 |
return 0; |
| 701 |
} |
| 702 |
|
| 703 |
static int slavio_serial_load(QEMUFile *f, void *opaque, int version_id) |
| 704 |
{
|
| 705 |
SerialState *s = opaque; |
| 706 |
int ret;
|
| 707 |
|
| 708 |
ret = slavio_serial_load_chn(f, &s->chn[0], version_id);
|
| 709 |
if (ret != 0) |
| 710 |
return ret;
|
| 711 |
ret = slavio_serial_load_chn(f, &s->chn[1], version_id);
|
| 712 |
return ret;
|
| 713 |
|
| 714 |
} |
| 715 |
|
| 716 |
SerialState *slavio_serial_init(target_phys_addr_t base, qemu_irq irq, |
| 717 |
CharDriverState *chr1, CharDriverState *chr2) |
| 718 |
{
|
| 719 |
int slavio_serial_io_memory, i;
|
| 720 |
SerialState *s; |
| 721 |
|
| 722 |
s = qemu_mallocz(sizeof(SerialState));
|
| 723 |
if (!s)
|
| 724 |
return NULL; |
| 725 |
|
| 726 |
slavio_serial_io_memory = cpu_register_io_memory(0, slavio_serial_mem_read,
|
| 727 |
slavio_serial_mem_write, |
| 728 |
s); |
| 729 |
cpu_register_physical_memory(base, SERIAL_SIZE, slavio_serial_io_memory); |
| 730 |
|
| 731 |
s->chn[0].chr = chr1;
|
| 732 |
s->chn[1].chr = chr2;
|
| 733 |
s->chn[0].disabled = 0; |
| 734 |
s->chn[1].disabled = 0; |
| 735 |
|
| 736 |
for (i = 0; i < 2; i++) { |
| 737 |
s->chn[i].irq = irq; |
| 738 |
s->chn[i].chn = 1 - i;
|
| 739 |
s->chn[i].type = ser; |
| 740 |
if (s->chn[i].chr) {
|
| 741 |
qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive, |
| 742 |
serial_receive1, serial_event, &s->chn[i]); |
| 743 |
} |
| 744 |
} |
| 745 |
s->chn[0].otherchn = &s->chn[1]; |
| 746 |
s->chn[1].otherchn = &s->chn[0]; |
| 747 |
register_savevm("slavio_serial", base, 2, slavio_serial_save, |
| 748 |
slavio_serial_load, s); |
| 749 |
qemu_register_reset(slavio_serial_reset, s); |
| 750 |
slavio_serial_reset(s); |
| 751 |
return s;
|
| 752 |
} |
| 753 |
|
| 754 |
static const uint8_t keycodes[128] = { |
| 755 |
127, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 53, |
| 756 |
54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 89, 76, 77, 78, |
| 757 |
79, 80, 81, 82, 83, 84, 85, 86, 87, 42, 99, 88, 100, 101, 102, 103, |
| 758 |
104, 105, 106, 107, 108, 109, 110, 47, 19, 121, 119, 5, 6, 8, 10, 12, |
| 759 |
14, 16, 17, 18, 7, 98, 23, 68, 69, 70, 71, 91, 92, 93, 125, 112, |
| 760 |
113, 114, 94, 50, 0, 0, 124, 9, 11, 0, 0, 0, 0, 0, 0, 0, |
| 761 |
90, 0, 46, 22, 13, 111, 52, 20, 96, 24, 28, 74, 27, 123, 44, 66, |
| 762 |
0, 45, 2, 4, 48, 0, 0, 21, 0, 0, 0, 0, 0, 120, 122, 67, |
| 763 |
}; |
| 764 |
|
| 765 |
static const uint8_t e0_keycodes[128] = { |
| 766 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 767 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 76, 0, 0, |
| 768 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 769 |
0, 0, 0, 0, 0, 109, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, |
| 770 |
0, 0, 0, 0, 0, 0, 0, 68, 69, 70, 0, 91, 0, 93, 0, 112, |
| 771 |
113, 114, 94, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 772 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 773 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 774 |
}; |
| 775 |
|
| 776 |
static void sunkbd_event(void *opaque, int ch) |
| 777 |
{
|
| 778 |
ChannelState *s = opaque; |
| 779 |
int release = ch & 0x80; |
| 780 |
|
| 781 |
KBD_DPRINTF("Untranslated keycode %2.2x (%s)\n", ch, release? "release" : |
| 782 |
"press");
|
| 783 |
switch (ch) {
|
| 784 |
case 58: // Caps lock press |
| 785 |
s->caps_lock_mode ^= 1;
|
| 786 |
if (s->caps_lock_mode == 2) |
| 787 |
return; // Drop second press |
| 788 |
break;
|
| 789 |
case 69: // Num lock press |
| 790 |
s->num_lock_mode ^= 1;
|
| 791 |
if (s->num_lock_mode == 2) |
| 792 |
return; // Drop second press |
| 793 |
break;
|
| 794 |
case 186: // Caps lock release |
| 795 |
s->caps_lock_mode ^= 2;
|
| 796 |
if (s->caps_lock_mode == 3) |
| 797 |
return; // Drop first release |
| 798 |
break;
|
| 799 |
case 197: // Num lock release |
| 800 |
s->num_lock_mode ^= 2;
|
| 801 |
if (s->num_lock_mode == 3) |
| 802 |
return; // Drop first release |
| 803 |
break;
|
| 804 |
case 0xe0: |
| 805 |
s->e0_mode = 1;
|
| 806 |
return;
|
| 807 |
default:
|
| 808 |
break;
|
| 809 |
} |
| 810 |
if (s->e0_mode) {
|
| 811 |
s->e0_mode = 0;
|
| 812 |
ch = e0_keycodes[ch & 0x7f];
|
| 813 |
} else {
|
| 814 |
ch = keycodes[ch & 0x7f];
|
| 815 |
} |
| 816 |
KBD_DPRINTF("Translated keycode %2.2x\n", ch);
|
| 817 |
put_queue(s, ch | release); |
| 818 |
} |
| 819 |
|
| 820 |
static void handle_kbd_command(ChannelState *s, int val) |
| 821 |
{
|
| 822 |
KBD_DPRINTF("Command %d\n", val);
|
| 823 |
if (s->led_mode) { // Ignore led byte |
| 824 |
s->led_mode = 0;
|
| 825 |
return;
|
| 826 |
} |
| 827 |
switch (val) {
|
| 828 |
case 1: // Reset, return type code |
| 829 |
clear_queue(s); |
| 830 |
put_queue(s, 0xff);
|
| 831 |
put_queue(s, 4); // Type 4 |
| 832 |
put_queue(s, 0x7f);
|
| 833 |
break;
|
| 834 |
case 0xe: // Set leds |
| 835 |
s->led_mode = 1;
|
| 836 |
break;
|
| 837 |
case 7: // Query layout |
| 838 |
case 0xf: |
| 839 |
clear_queue(s); |
| 840 |
put_queue(s, 0xfe);
|
| 841 |
put_queue(s, 0); // XXX, layout? |
| 842 |
break;
|
| 843 |
default:
|
| 844 |
break;
|
| 845 |
} |
| 846 |
} |
| 847 |
|
| 848 |
static void sunmouse_event(void *opaque, |
| 849 |
int dx, int dy, int dz, int buttons_state) |
| 850 |
{
|
| 851 |
ChannelState *s = opaque; |
| 852 |
int ch;
|
| 853 |
|
| 854 |
MS_DPRINTF("dx=%d dy=%d buttons=%01x\n", dx, dy, buttons_state);
|
| 855 |
|
| 856 |
ch = 0x80 | 0x7; /* protocol start byte, no buttons pressed */ |
| 857 |
|
| 858 |
if (buttons_state & MOUSE_EVENT_LBUTTON)
|
| 859 |
ch ^= 0x4;
|
| 860 |
if (buttons_state & MOUSE_EVENT_MBUTTON)
|
| 861 |
ch ^= 0x2;
|
| 862 |
if (buttons_state & MOUSE_EVENT_RBUTTON)
|
| 863 |
ch ^= 0x1;
|
| 864 |
|
| 865 |
put_queue(s, ch); |
| 866 |
|
| 867 |
ch = dx; |
| 868 |
|
| 869 |
if (ch > 127) |
| 870 |
ch=127;
|
| 871 |
else if (ch < -127) |
| 872 |
ch=-127;
|
| 873 |
|
| 874 |
put_queue(s, ch & 0xff);
|
| 875 |
|
| 876 |
ch = -dy; |
| 877 |
|
| 878 |
if (ch > 127) |
| 879 |
ch=127;
|
| 880 |
else if (ch < -127) |
| 881 |
ch=-127;
|
| 882 |
|
| 883 |
put_queue(s, ch & 0xff);
|
| 884 |
|
| 885 |
// MSC protocol specify two extra motion bytes
|
| 886 |
|
| 887 |
put_queue(s, 0);
|
| 888 |
put_queue(s, 0);
|
| 889 |
} |
| 890 |
|
| 891 |
void slavio_serial_ms_kbd_init(target_phys_addr_t base, qemu_irq irq,
|
| 892 |
int disabled)
|
| 893 |
{
|
| 894 |
int slavio_serial_io_memory, i;
|
| 895 |
SerialState *s; |
| 896 |
|
| 897 |
s = qemu_mallocz(sizeof(SerialState));
|
| 898 |
if (!s)
|
| 899 |
return;
|
| 900 |
for (i = 0; i < 2; i++) { |
| 901 |
s->chn[i].irq = irq; |
| 902 |
s->chn[i].chn = 1 - i;
|
| 903 |
s->chn[i].chr = NULL;
|
| 904 |
} |
| 905 |
s->chn[0].otherchn = &s->chn[1]; |
| 906 |
s->chn[1].otherchn = &s->chn[0]; |
| 907 |
s->chn[0].type = mouse;
|
| 908 |
s->chn[1].type = kbd;
|
| 909 |
s->chn[0].disabled = disabled;
|
| 910 |
s->chn[1].disabled = disabled;
|
| 911 |
|
| 912 |
slavio_serial_io_memory = cpu_register_io_memory(0, slavio_serial_mem_read,
|
| 913 |
slavio_serial_mem_write, |
| 914 |
s); |
| 915 |
cpu_register_physical_memory(base, SERIAL_SIZE, slavio_serial_io_memory); |
| 916 |
|
| 917 |
qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0, |
| 918 |
"QEMU Sun Mouse");
|
| 919 |
qemu_add_kbd_event_handler(sunkbd_event, &s->chn[1]);
|
| 920 |
register_savevm("slavio_serial_mouse", base, 2, slavio_serial_save, |
| 921 |
slavio_serial_load, s); |
| 922 |
qemu_register_reset(slavio_serial_reset, s); |
| 923 |
slavio_serial_reset(s); |
| 924 |
} |