| 1 |
/* |
| 2 |
* serial_unix.cpp - Serial device driver, Unix specific stuff |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include "sysdeps.h" |
| 22 |
|
| 23 |
#include <sys/ioctl.h> |
| 24 |
#include <sys/stat.h> |
| 25 |
#include <sys/wait.h> |
| 26 |
#include <pthread.h> |
| 27 |
#include <semaphore.h> |
| 28 |
#include <termios.h> |
| 29 |
#include <errno.h> |
| 30 |
#ifdef __linux__ |
| 31 |
#include <linux/lp.h> |
| 32 |
#include <linux/major.h> |
| 33 |
#include <linux/kdev_t.h> |
| 34 |
#endif |
| 35 |
|
| 36 |
#include "cpu_emulation.h" |
| 37 |
#include "main.h" |
| 38 |
#include "macos_util.h" |
| 39 |
#include "prefs.h" |
| 40 |
#include "serial.h" |
| 41 |
#include "serial_defs.h" |
| 42 |
|
| 43 |
extern "C" { |
| 44 |
#include "sshpty.h" |
| 45 |
} |
| 46 |
|
| 47 |
|
| 48 |
#define DEBUG 0 |
| 49 |
#include "debug.h" |
| 50 |
|
| 51 |
#define MONITOR 0 |
| 52 |
|
| 53 |
|
| 54 |
// Missing functions |
| 55 |
#ifndef HAVE_CFMAKERAW |
| 56 |
static int cfmakeraw(struct termios *termios_p) |
| 57 |
{ |
| 58 |
termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); |
| 59 |
termios_p->c_oflag &= ~OPOST; |
| 60 |
termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); |
| 61 |
termios_p->c_cflag &= ~(CSIZE|PARENB); |
| 62 |
termios_p->c_cflag |= CS8; |
| 63 |
return 0; |
| 64 |
} |
| 65 |
#endif |
| 66 |
|
| 67 |
|
| 68 |
// Driver private variables |
| 69 |
class XSERDPort : public SERDPort { |
| 70 |
public: |
| 71 |
XSERDPort(const char *dev) |
| 72 |
{ |
| 73 |
device_name = dev; |
| 74 |
protocol = serial; |
| 75 |
fd = -1; |
| 76 |
pid = 0; |
| 77 |
input_thread_active = output_thread_active = false; |
| 78 |
|
| 79 |
Set_pthread_attr(&thread_attr, 2); |
| 80 |
} |
| 81 |
|
| 82 |
virtual ~XSERDPort() |
| 83 |
{ |
| 84 |
if (input_thread_active) { |
| 85 |
input_thread_cancel = true; |
| 86 |
#ifdef HAVE_PTHREAD_CANCEL |
| 87 |
pthread_cancel(input_thread); |
| 88 |
#endif |
| 89 |
pthread_join(input_thread, NULL); |
| 90 |
sem_destroy(&input_signal); |
| 91 |
input_thread_active = false; |
| 92 |
} |
| 93 |
if (output_thread_active) { |
| 94 |
output_thread_cancel = true; |
| 95 |
#ifdef HAVE_PTHREAD_CANCEL |
| 96 |
pthread_cancel(output_thread); |
| 97 |
#endif |
| 98 |
pthread_join(output_thread, NULL); |
| 99 |
sem_destroy(&output_signal); |
| 100 |
output_thread_active = false; |
| 101 |
} |
| 102 |
} |
| 103 |
|
| 104 |
virtual int16 open(uint16 config); |
| 105 |
virtual int16 prime_in(uint32 pb, uint32 dce); |
| 106 |
virtual int16 prime_out(uint32 pb, uint32 dce); |
| 107 |
virtual int16 control(uint32 pb, uint32 dce, uint16 code); |
| 108 |
virtual int16 status(uint32 pb, uint32 dce, uint16 code); |
| 109 |
virtual int16 close(void); |
| 110 |
|
| 111 |
private: |
| 112 |
bool open_pty(void); |
| 113 |
bool configure(uint16 config); |
| 114 |
void set_handshake(uint32 s, bool with_dtr); |
| 115 |
static void *input_func(void *arg); |
| 116 |
static void *output_func(void *arg); |
| 117 |
|
| 118 |
const char *device_name; // Device name |
| 119 |
enum {serial, parallel, pty, midi} |
| 120 |
protocol; // Type of device |
| 121 |
int fd; // FD of device |
| 122 |
pid_t pid; // PID of child process |
| 123 |
|
| 124 |
bool io_killed; // Flag: KillIO called, I/O threads must not call deferred tasks |
| 125 |
bool quitting; // Flag: Quit threads |
| 126 |
|
| 127 |
pthread_attr_t thread_attr; // Input/output thread attributes |
| 128 |
|
| 129 |
bool input_thread_active; // Flag: Input thread installed |
| 130 |
volatile bool input_thread_cancel; // Flag: Cancel input thread |
| 131 |
pthread_t input_thread; // Data input thread |
| 132 |
sem_t input_signal; // Signal for input thread: execute command |
| 133 |
uint32 input_pb; // Command parameter for input thread |
| 134 |
|
| 135 |
bool output_thread_active; // Flag: Output thread installed |
| 136 |
volatile bool output_thread_cancel; // Flag: Cancel output thread |
| 137 |
pthread_t output_thread; // Data output thread |
| 138 |
sem_t output_signal; // Signal for output thread: execute command |
| 139 |
uint32 output_pb; // Command parameter for output thread |
| 140 |
|
| 141 |
struct termios mode; // Terminal configuration |
| 142 |
}; |
| 143 |
|
| 144 |
|
| 145 |
/* |
| 146 |
* Initialization |
| 147 |
*/ |
| 148 |
|
| 149 |
void SerialInit(void) |
| 150 |
{ |
| 151 |
// Read serial preferences and create structs for both ports |
| 152 |
the_serd_port[0] = new XSERDPort(PrefsFindString("seriala")); |
| 153 |
the_serd_port[1] = new XSERDPort(PrefsFindString("serialb")); |
| 154 |
} |
| 155 |
|
| 156 |
|
| 157 |
/* |
| 158 |
* Deinitialization |
| 159 |
*/ |
| 160 |
|
| 161 |
void SerialExit(void) |
| 162 |
{ |
| 163 |
delete (XSERDPort *)the_serd_port[0]; |
| 164 |
delete (XSERDPort *)the_serd_port[1]; |
| 165 |
} |
| 166 |
|
| 167 |
|
| 168 |
/* |
| 169 |
* Open serial port |
| 170 |
*/ |
| 171 |
|
| 172 |
int16 XSERDPort::open(uint16 config) |
| 173 |
{ |
| 174 |
// Don't open NULL name devices |
| 175 |
if (device_name == NULL) |
| 176 |
return openErr; |
| 177 |
|
| 178 |
// Init variables |
| 179 |
io_killed = false; |
| 180 |
quitting = false; |
| 181 |
|
| 182 |
// Open port, according to the syntax of the path |
| 183 |
if (device_name[0] == '|') { |
| 184 |
// Open a process via ptys |
| 185 |
if (!open_pty()) |
| 186 |
goto open_error; |
| 187 |
} |
| 188 |
else if (!strcmp(device_name, "midi")) { |
| 189 |
// MIDI: not yet implemented |
| 190 |
return openErr; |
| 191 |
} |
| 192 |
else { |
| 193 |
// Device special file |
| 194 |
fd = ::open(device_name, O_RDWR); |
| 195 |
if (fd < 0) |
| 196 |
goto open_error; |
| 197 |
|
| 198 |
#if defined(__linux__) |
| 199 |
// Parallel port? |
| 200 |
struct stat st; |
| 201 |
if (fstat(fd, &st) == 0) |
| 202 |
if (S_ISCHR(st.st_mode)) |
| 203 |
protocol = ((MAJOR(st.st_rdev) == LP_MAJOR) ? parallel : serial); |
| 204 |
#elif defined(__FreeBSD__) || defined(__NetBSD__) |
| 205 |
// Parallel port? |
| 206 |
struct stat st; |
| 207 |
if (fstat(fd, &st) == 0) |
| 208 |
if (S_ISCHR(st.st_mode)) |
| 209 |
protocol = (((st.st_rdev >> 16) == 16) ? parallel : serial); |
| 210 |
#endif |
| 211 |
} |
| 212 |
|
| 213 |
// Configure port for raw mode |
| 214 |
if (protocol == serial) { |
| 215 |
if (tcgetattr(fd, &mode) < 0) |
| 216 |
goto open_error; |
| 217 |
cfmakeraw(&mode); |
| 218 |
mode.c_cflag |= HUPCL; |
| 219 |
mode.c_cc[VMIN] = 1; |
| 220 |
mode.c_cc[VTIME] = 0; |
| 221 |
tcsetattr(fd, TCSAFLUSH, &mode); |
| 222 |
} |
| 223 |
configure(config); |
| 224 |
|
| 225 |
// Start input/output threads |
| 226 |
input_thread_cancel = false; |
| 227 |
output_thread_cancel = false; |
| 228 |
if (sem_init(&input_signal, 0, 0) < 0) |
| 229 |
goto open_error; |
| 230 |
if (sem_init(&output_signal, 0, 0) < 0) |
| 231 |
goto open_error; |
| 232 |
input_thread_active = (pthread_create(&input_thread, &thread_attr, input_func, this) == 0); |
| 233 |
output_thread_active = (pthread_create(&output_thread, &thread_attr, output_func, this) == 0); |
| 234 |
if (!input_thread_active || !output_thread_active) |
| 235 |
goto open_error; |
| 236 |
return noErr; |
| 237 |
|
| 238 |
open_error: |
| 239 |
if (input_thread_active) { |
| 240 |
input_thread_cancel = true; |
| 241 |
#ifdef HAVE_PTHREAD_CANCEL |
| 242 |
pthread_cancel(input_thread); |
| 243 |
#endif |
| 244 |
pthread_join(input_thread, NULL); |
| 245 |
sem_destroy(&input_signal); |
| 246 |
input_thread_active = false; |
| 247 |
} |
| 248 |
if (output_thread_active) { |
| 249 |
output_thread_cancel = true; |
| 250 |
#ifdef HAVE_PTHREAD_CANCEL |
| 251 |
pthread_cancel(output_thread); |
| 252 |
#endif |
| 253 |
pthread_join(output_thread, NULL); |
| 254 |
sem_destroy(&output_signal); |
| 255 |
output_thread_active = false; |
| 256 |
} |
| 257 |
if (fd > 0) { |
| 258 |
::close(fd); |
| 259 |
fd = -1; |
| 260 |
} |
| 261 |
return openErr; |
| 262 |
} |
| 263 |
|
| 264 |
|
| 265 |
/* |
| 266 |
* Read data from port |
| 267 |
*/ |
| 268 |
|
| 269 |
int16 XSERDPort::prime_in(uint32 pb, uint32 dce) |
| 270 |
{ |
| 271 |
// Send input command to input_thread |
| 272 |
read_done = false; |
| 273 |
read_pending = true; |
| 274 |
input_pb = pb; |
| 275 |
WriteMacInt32(input_dt + serdtDCE, dce); |
| 276 |
sem_post(&input_signal); |
| 277 |
return 1; // Command in progress |
| 278 |
} |
| 279 |
|
| 280 |
|
| 281 |
/* |
| 282 |
* Write data to port |
| 283 |
*/ |
| 284 |
|
| 285 |
int16 XSERDPort::prime_out(uint32 pb, uint32 dce) |
| 286 |
{ |
| 287 |
// Send output command to output_thread |
| 288 |
write_done = false; |
| 289 |
write_pending = true; |
| 290 |
output_pb = pb; |
| 291 |
WriteMacInt32(output_dt + serdtDCE, dce); |
| 292 |
sem_post(&output_signal); |
| 293 |
return 1; // Command in progress |
| 294 |
} |
| 295 |
|
| 296 |
|
| 297 |
/* |
| 298 |
* Control calls |
| 299 |
*/ |
| 300 |
|
| 301 |
int16 XSERDPort::control(uint32 pb, uint32 dce, uint16 code) |
| 302 |
{ |
| 303 |
switch (code) { |
| 304 |
case 1: // KillIO |
| 305 |
io_killed = true; |
| 306 |
if (protocol == serial) |
| 307 |
tcflush(fd, TCIOFLUSH); |
| 308 |
while (read_pending || write_pending) |
| 309 |
usleep(10000); |
| 310 |
io_killed = false; |
| 311 |
return noErr; |
| 312 |
|
| 313 |
case kSERDConfiguration: |
| 314 |
if (configure(ReadMacInt16(pb + csParam))) |
| 315 |
return noErr; |
| 316 |
else |
| 317 |
return paramErr; |
| 318 |
|
| 319 |
case kSERDInputBuffer: |
| 320 |
return noErr; // Not supported under Unix |
| 321 |
|
| 322 |
case kSERDSerHShake: |
| 323 |
set_handshake(pb + csParam, false); |
| 324 |
return noErr; |
| 325 |
|
| 326 |
case kSERDSetBreak: |
| 327 |
if (protocol == serial) |
| 328 |
tcsendbreak(fd, 0); |
| 329 |
return noErr; |
| 330 |
|
| 331 |
case kSERDClearBreak: |
| 332 |
return noErr; |
| 333 |
|
| 334 |
case kSERDBaudRate: { |
| 335 |
if (protocol != serial) |
| 336 |
return noErr; |
| 337 |
uint16 rate = ReadMacInt16(pb + csParam); |
| 338 |
speed_t baud_rate; |
| 339 |
if (rate <= 50) { |
| 340 |
rate = 50; baud_rate = B50; |
| 341 |
} else if (rate <= 75) { |
| 342 |
rate = 75; baud_rate = B75; |
| 343 |
} else if (rate <= 110) { |
| 344 |
rate = 110; baud_rate = B110; |
| 345 |
} else if (rate <= 134) { |
| 346 |
rate = 134; baud_rate = B134; |
| 347 |
} else if (rate <= 150) { |
| 348 |
rate = 150; baud_rate = B150; |
| 349 |
} else if (rate <= 200) { |
| 350 |
rate = 200; baud_rate = B200; |
| 351 |
} else if (rate <= 300) { |
| 352 |
rate = 300; baud_rate = B300; |
| 353 |
} else if (rate <= 600) { |
| 354 |
rate = 600; baud_rate = B600; |
| 355 |
} else if (rate <= 1200) { |
| 356 |
rate = 1200; baud_rate = B1200; |
| 357 |
} else if (rate <= 1800) { |
| 358 |
rate = 1800; baud_rate = B1800; |
| 359 |
} else if (rate <= 2400) { |
| 360 |
rate = 2400; baud_rate = B2400; |
| 361 |
} else if (rate <= 4800) { |
| 362 |
rate = 4800; baud_rate = B4800; |
| 363 |
} else if (rate <= 9600) { |
| 364 |
rate = 9600; baud_rate = B9600; |
| 365 |
} else if (rate <= 19200) { |
| 366 |
rate = 19200; baud_rate = B19200; |
| 367 |
} else if (rate <= 38400) { |
| 368 |
rate = 38400; baud_rate = B38400; |
| 369 |
} else if (rate <= 57600) { |
| 370 |
rate = 57600; baud_rate = B57600; |
| 371 |
} else { |
| 372 |
// Just for safety in case someone wants a rate between 57600 and 65535 |
| 373 |
rate = 57600; baud_rate = B57600; |
| 374 |
} |
| 375 |
WriteMacInt16(pb + csParam, rate); |
| 376 |
cfsetispeed(&mode, baud_rate); |
| 377 |
cfsetospeed(&mode, baud_rate); |
| 378 |
tcsetattr(fd, TCSANOW, &mode); |
| 379 |
return noErr; |
| 380 |
} |
| 381 |
|
| 382 |
case kSERDHandshake: |
| 383 |
case kSERDHandshakeRS232: |
| 384 |
set_handshake(pb + csParam, true); |
| 385 |
return noErr; |
| 386 |
|
| 387 |
case kSERDMiscOptions: |
| 388 |
if (protocol != serial) |
| 389 |
return noErr; |
| 390 |
if (ReadMacInt8(pb + csParam) & kOptionPreserveDTR) |
| 391 |
mode.c_cflag &= ~HUPCL; |
| 392 |
else |
| 393 |
mode.c_cflag |= HUPCL; |
| 394 |
tcsetattr(fd, TCSANOW, &mode); |
| 395 |
return noErr; |
| 396 |
|
| 397 |
case kSERDAssertDTR: { |
| 398 |
if (protocol != serial) |
| 399 |
return noErr; |
| 400 |
unsigned int status = TIOCM_DTR; |
| 401 |
ioctl(fd, TIOCMBIS, &status); |
| 402 |
return noErr; |
| 403 |
} |
| 404 |
|
| 405 |
case kSERDNegateDTR: { |
| 406 |
if (protocol != serial) |
| 407 |
return noErr; |
| 408 |
unsigned int status = TIOCM_DTR; |
| 409 |
ioctl(fd, TIOCMBIC, &status); |
| 410 |
return noErr; |
| 411 |
} |
| 412 |
|
| 413 |
case kSERDSetPEChar: |
| 414 |
case kSERDSetPEAltChar: |
| 415 |
return noErr; // Not supported under Unix |
| 416 |
|
| 417 |
case kSERDResetChannel: |
| 418 |
if (protocol == serial) |
| 419 |
tcflush(fd, TCIOFLUSH); |
| 420 |
return noErr; |
| 421 |
|
| 422 |
case kSERDAssertRTS: { |
| 423 |
if (protocol != serial) |
| 424 |
return noErr; |
| 425 |
unsigned int status = TIOCM_RTS; |
| 426 |
ioctl(fd, TIOCMBIS, &status); |
| 427 |
return noErr; |
| 428 |
} |
| 429 |
|
| 430 |
case kSERDNegateRTS: { |
| 431 |
if (protocol != serial) |
| 432 |
return noErr; |
| 433 |
unsigned int status = TIOCM_RTS; |
| 434 |
ioctl(fd, TIOCMBIC, &status); |
| 435 |
return noErr; |
| 436 |
} |
| 437 |
|
| 438 |
case kSERD115KBaud: |
| 439 |
if (protocol != serial) |
| 440 |
return noErr; |
| 441 |
cfsetispeed(&mode, B115200); |
| 442 |
cfsetospeed(&mode, B115200); |
| 443 |
tcsetattr(fd, TCSANOW, &mode); |
| 444 |
return noErr; |
| 445 |
|
| 446 |
case kSERD230KBaud: |
| 447 |
case kSERDSetHighSpeed: |
| 448 |
if (protocol != serial) |
| 449 |
return noErr; |
| 450 |
cfsetispeed(&mode, B230400); |
| 451 |
cfsetospeed(&mode, B230400); |
| 452 |
tcsetattr(fd, TCSANOW, &mode); |
| 453 |
return noErr; |
| 454 |
|
| 455 |
default: |
| 456 |
printf("WARNING: SerialControl(): unimplemented control code %d\n", code); |
| 457 |
return controlErr; |
| 458 |
} |
| 459 |
} |
| 460 |
|
| 461 |
|
| 462 |
/* |
| 463 |
* Status calls |
| 464 |
*/ |
| 465 |
|
| 466 |
int16 XSERDPort::status(uint32 pb, uint32 dce, uint16 code) |
| 467 |
{ |
| 468 |
switch (code) { |
| 469 |
case kSERDInputCount: { |
| 470 |
int num; |
| 471 |
ioctl(fd, FIONREAD, &num); |
| 472 |
WriteMacInt32(pb + csParam, num); |
| 473 |
return noErr; |
| 474 |
} |
| 475 |
|
| 476 |
case kSERDStatus: { |
| 477 |
uint32 p = pb + csParam; |
| 478 |
WriteMacInt8(p + staCumErrs, cum_errors); |
| 479 |
cum_errors = 0; |
| 480 |
WriteMacInt8(p + staXOffSent, 0); |
| 481 |
WriteMacInt8(p + staXOffHold, 0); |
| 482 |
WriteMacInt8(p + staRdPend, read_pending); |
| 483 |
WriteMacInt8(p + staWrPend, write_pending); |
| 484 |
if (protocol != serial) { |
| 485 |
WriteMacInt8(p + staCtsHold, 0); |
| 486 |
WriteMacInt8(p + staDsrHold, 0); |
| 487 |
WriteMacInt8(p + staModemStatus, dsrEvent | dcdEvent | ctsEvent); |
| 488 |
} else { |
| 489 |
unsigned int status; |
| 490 |
ioctl(fd, TIOCMGET, &status); |
| 491 |
WriteMacInt8(p + staCtsHold, status & TIOCM_CTS ? 0 : 1); |
| 492 |
WriteMacInt8(p + staDsrHold, status & TIOCM_DTR ? 0 : 1); |
| 493 |
WriteMacInt8(p + staModemStatus, |
| 494 |
(status & TIOCM_DSR ? dsrEvent : 0) |
| 495 |
| (status & TIOCM_RI ? riEvent : 0) |
| 496 |
| (status & TIOCM_CD ? dcdEvent : 0) |
| 497 |
| (status & TIOCM_CTS ? ctsEvent : 0)); |
| 498 |
} |
| 499 |
return noErr; |
| 500 |
} |
| 501 |
|
| 502 |
default: |
| 503 |
printf("WARNING: SerialStatus(): unimplemented status code %d\n", code); |
| 504 |
return statusErr; |
| 505 |
} |
| 506 |
} |
| 507 |
|
| 508 |
|
| 509 |
/* |
| 510 |
* Close serial port |
| 511 |
*/ |
| 512 |
|
| 513 |
int16 XSERDPort::close() |
| 514 |
{ |
| 515 |
// Kill threads |
| 516 |
if (input_thread_active) { |
| 517 |
quitting = true; |
| 518 |
sem_post(&input_signal); |
| 519 |
pthread_join(input_thread, NULL); |
| 520 |
input_thread_active = false; |
| 521 |
sem_destroy(&input_signal); |
| 522 |
} |
| 523 |
if (output_thread_active) { |
| 524 |
quitting = true; |
| 525 |
sem_post(&output_signal); |
| 526 |
pthread_join(output_thread, NULL); |
| 527 |
output_thread_active = false; |
| 528 |
sem_destroy(&output_signal); |
| 529 |
} |
| 530 |
|
| 531 |
// Close port |
| 532 |
if (fd > 0) |
| 533 |
::close(fd); |
| 534 |
fd = -1; |
| 535 |
|
| 536 |
// Wait for the subprocess to exit |
| 537 |
if (pid) |
| 538 |
waitpid(pid, NULL, 0); |
| 539 |
pid = 0; |
| 540 |
|
| 541 |
return noErr; |
| 542 |
} |
| 543 |
|
| 544 |
|
| 545 |
/* |
| 546 |
* Open a process via ptys |
| 547 |
*/ |
| 548 |
|
| 549 |
bool XSERDPort::open_pty(void) |
| 550 |
{ |
| 551 |
// Talk to a process via a pty |
| 552 |
char slave[128]; |
| 553 |
int slavefd; |
| 554 |
|
| 555 |
protocol = pty; |
| 556 |
if (!pty_allocate(&fd, &slavefd, slave, sizeof(slave))) |
| 557 |
return false; |
| 558 |
|
| 559 |
fflush(stdout); |
| 560 |
fflush(stderr); |
| 561 |
switch (pid = fork()) { |
| 562 |
case -1: // error |
| 563 |
return false; |
| 564 |
break; |
| 565 |
case 0: // child |
| 566 |
::close(fd); |
| 567 |
|
| 568 |
/* Make the pseudo tty our controlling tty. */ |
| 569 |
pty_make_controlling_tty(&slavefd, slave); |
| 570 |
|
| 571 |
::close(0); dup(slavefd); // Use the slave fd for stdin, |
| 572 |
::close(1); dup(slavefd); // stdout, |
| 573 |
::close(2); dup(slavefd); // and stderr. |
| 574 |
|
| 575 |
// <should we be more paranoid about closing unused fds?> |
| 576 |
// <should we drop privileges if running setuid?> |
| 577 |
|
| 578 |
// Let the shell do the dirty work |
| 579 |
execlp("/bin/sh", "/bin/sh", "-c", ++device_name, 0); |
| 580 |
|
| 581 |
// exec failed! |
| 582 |
printf("serial_open: could not exec %s: %s\n", |
| 583 |
"/bin/sh", strerror(errno)); |
| 584 |
exit(1); |
| 585 |
break; |
| 586 |
default: // parent |
| 587 |
// Pid was stored above |
| 588 |
break; |
| 589 |
} |
| 590 |
|
| 591 |
return true; |
| 592 |
} |
| 593 |
|
| 594 |
|
| 595 |
/* |
| 596 |
* Configure serial port with MacOS config word |
| 597 |
*/ |
| 598 |
|
| 599 |
bool XSERDPort::configure(uint16 config) |
| 600 |
{ |
| 601 |
D(bug(" configure %04x\n", config)); |
| 602 |
if (protocol != serial) |
| 603 |
return true; |
| 604 |
|
| 605 |
// Set number of stop bits |
| 606 |
switch (config & 0xc000) { |
| 607 |
case stop10: |
| 608 |
mode.c_cflag &= ~CSTOPB; |
| 609 |
break; |
| 610 |
case stop20: |
| 611 |
mode.c_cflag |= CSTOPB; |
| 612 |
break; |
| 613 |
default: |
| 614 |
return false; |
| 615 |
} |
| 616 |
|
| 617 |
// Set parity mode |
| 618 |
switch (config & 0x3000) { |
| 619 |
case noParity: |
| 620 |
mode.c_iflag &= ~INPCK; |
| 621 |
mode.c_oflag &= ~PARENB; |
| 622 |
break; |
| 623 |
case oddParity: |
| 624 |
mode.c_iflag |= INPCK; |
| 625 |
mode.c_oflag |= PARENB; |
| 626 |
mode.c_oflag |= PARODD; |
| 627 |
break; |
| 628 |
case evenParity: |
| 629 |
mode.c_iflag |= INPCK; |
| 630 |
mode.c_oflag |= PARENB; |
| 631 |
mode.c_oflag &= ~PARODD; |
| 632 |
break; |
| 633 |
default: |
| 634 |
return false; |
| 635 |
} |
| 636 |
|
| 637 |
// Set number of data bits |
| 638 |
switch (config & 0x0c00) { |
| 639 |
case data5: |
| 640 |
mode.c_cflag = mode.c_cflag & ~CSIZE | CS5; |
| 641 |
break; |
| 642 |
case data6: |
| 643 |
mode.c_cflag = mode.c_cflag & ~CSIZE | CS6; |
| 644 |
break; |
| 645 |
case data7: |
| 646 |
mode.c_cflag = mode.c_cflag & ~CSIZE | CS7; |
| 647 |
break; |
| 648 |
case data8: |
| 649 |
mode.c_cflag = mode.c_cflag & ~CSIZE | CS8; |
| 650 |
break; |
| 651 |
} |
| 652 |
|
| 653 |
// Set baud rate |
| 654 |
speed_t baud_rate; |
| 655 |
switch (config & 0x03ff) { |
| 656 |
case baud150: baud_rate = B150; break; |
| 657 |
case baud300: baud_rate = B300; break; |
| 658 |
case baud600: baud_rate = B600; break; |
| 659 |
case baud1200: baud_rate = B1200; break; |
| 660 |
case baud1800: baud_rate = B1800; break; |
| 661 |
case baud2400: baud_rate = B2400; break; |
| 662 |
case baud4800: baud_rate = B4800; break; |
| 663 |
case baud9600: baud_rate = B9600; break; |
| 664 |
case baud19200: baud_rate = B19200; break; |
| 665 |
case baud38400: baud_rate = B38400; break; |
| 666 |
case baud57600: baud_rate = B57600; break; |
| 667 |
default: |
| 668 |
return false; |
| 669 |
} |
| 670 |
cfsetispeed(&mode, baud_rate); |
| 671 |
cfsetospeed(&mode, baud_rate); |
| 672 |
tcsetattr(fd, TCSANOW, &mode); |
| 673 |
return true; |
| 674 |
} |
| 675 |
|
| 676 |
|
| 677 |
/* |
| 678 |
* Set serial handshaking |
| 679 |
*/ |
| 680 |
|
| 681 |
void XSERDPort::set_handshake(uint32 s, bool with_dtr) |
| 682 |
{ |
| 683 |
D(bug(" set_handshake %02x %02x %02x %02x %02x %02x %02x %02x\n", |
| 684 |
ReadMacInt8(s + 0), ReadMacInt8(s + 1), ReadMacInt8(s + 2), ReadMacInt8(s + 3), |
| 685 |
ReadMacInt8(s + 4), ReadMacInt8(s + 5), ReadMacInt8(s + 6), ReadMacInt8(s + 7))); |
| 686 |
if (protocol != serial) |
| 687 |
return; |
| 688 |
|
| 689 |
if (with_dtr) { |
| 690 |
if (ReadMacInt8(s + shkFCTS) || ReadMacInt8(s + shkFDTR)) |
| 691 |
mode.c_cflag |= CRTSCTS; |
| 692 |
else |
| 693 |
mode.c_cflag &= ~CRTSCTS; |
| 694 |
} else { |
| 695 |
if (ReadMacInt8(s + shkFCTS)) |
| 696 |
mode.c_cflag |= CRTSCTS; |
| 697 |
else |
| 698 |
mode.c_cflag &= ~CRTSCTS; |
| 699 |
} |
| 700 |
|
| 701 |
D(bug(" %sware flow control\n", mode.c_cflag & CRTSCTS ? "hard" : "soft")); |
| 702 |
tcsetattr(fd, TCSANOW, &mode); |
| 703 |
} |
| 704 |
|
| 705 |
|
| 706 |
/* |
| 707 |
* Data input thread |
| 708 |
*/ |
| 709 |
|
| 710 |
void *XSERDPort::input_func(void *arg) |
| 711 |
{ |
| 712 |
XSERDPort *s = (XSERDPort *)arg; |
| 713 |
while (!s->input_thread_cancel) { |
| 714 |
|
| 715 |
// Wait for commands |
| 716 |
sem_wait(&s->input_signal); |
| 717 |
if (s->quitting) |
| 718 |
break; |
| 719 |
|
| 720 |
// Execute command |
| 721 |
void *buf = Mac2HostAddr(ReadMacInt32(s->input_pb + ioBuffer)); |
| 722 |
uint32 length = ReadMacInt32(s->input_pb + ioReqCount); |
| 723 |
D(bug("input_func waiting for %ld bytes of data...\n", length)); |
| 724 |
int32 actual = read(s->fd, buf, length); |
| 725 |
D(bug(" %ld bytes received\n", actual)); |
| 726 |
|
| 727 |
#if MONITOR |
| 728 |
bug("Receiving serial data:\n"); |
| 729 |
uint8 *adr = (uint8 *)buf; |
| 730 |
for (int i=0; i<actual; i++) { |
| 731 |
bug("%02x ", adr[i]); |
| 732 |
} |
| 733 |
bug("\n"); |
| 734 |
#endif |
| 735 |
|
| 736 |
// KillIO called? Then simply return |
| 737 |
if (s->io_killed) { |
| 738 |
|
| 739 |
WriteMacInt16(s->input_pb + ioResult, uint16(abortErr)); |
| 740 |
WriteMacInt32(s->input_pb + ioActCount, 0); |
| 741 |
s->read_pending = s->read_done = false; |
| 742 |
|
| 743 |
} else { |
| 744 |
|
| 745 |
// Set error code |
| 746 |
if (actual >= 0) { |
| 747 |
WriteMacInt32(s->input_pb + ioActCount, actual); |
| 748 |
WriteMacInt32(s->input_dt + serdtResult, noErr); |
| 749 |
} else { |
| 750 |
WriteMacInt32(s->input_pb + ioActCount, 0); |
| 751 |
WriteMacInt32(s->input_dt + serdtResult, uint16(readErr)); |
| 752 |
} |
| 753 |
|
| 754 |
// Trigger serial interrupt |
| 755 |
D(bug(" triggering serial interrupt\n")); |
| 756 |
s->read_done = true; |
| 757 |
SetInterruptFlag(INTFLAG_SERIAL); |
| 758 |
TriggerInterrupt(); |
| 759 |
} |
| 760 |
} |
| 761 |
return NULL; |
| 762 |
} |
| 763 |
|
| 764 |
|
| 765 |
/* |
| 766 |
* Data output thread |
| 767 |
*/ |
| 768 |
|
| 769 |
void *XSERDPort::output_func(void *arg) |
| 770 |
{ |
| 771 |
XSERDPort *s = (XSERDPort *)arg; |
| 772 |
while (!s->output_thread_cancel) { |
| 773 |
|
| 774 |
// Wait for commands |
| 775 |
sem_wait(&s->output_signal); |
| 776 |
if (s->quitting) |
| 777 |
break; |
| 778 |
|
| 779 |
// Execute command |
| 780 |
void *buf = Mac2HostAddr(ReadMacInt32(s->output_pb + ioBuffer)); |
| 781 |
uint32 length = ReadMacInt32(s->output_pb + ioReqCount); |
| 782 |
D(bug("output_func transmitting %ld bytes of data...\n", length)); |
| 783 |
|
| 784 |
#if MONITOR |
| 785 |
bug("Sending serial data:\n"); |
| 786 |
uint8 *adr = (uint8 *)buf; |
| 787 |
for (int i=0; i<length; i++) { |
| 788 |
bug("%02x ", adr[i]); |
| 789 |
} |
| 790 |
bug("\n"); |
| 791 |
#endif |
| 792 |
|
| 793 |
int32 actual = write(s->fd, buf, length); |
| 794 |
D(bug(" %ld bytes transmitted\n", actual)); |
| 795 |
|
| 796 |
// KillIO called? Then simply return |
| 797 |
if (s->io_killed) { |
| 798 |
|
| 799 |
WriteMacInt16(s->output_pb + ioResult, uint16(abortErr)); |
| 800 |
WriteMacInt32(s->output_pb + ioActCount, 0); |
| 801 |
s->write_pending = s->write_done = false; |
| 802 |
|
| 803 |
} else { |
| 804 |
|
| 805 |
// Set error code |
| 806 |
if (actual >= 0) { |
| 807 |
WriteMacInt32(s->output_pb + ioActCount, actual); |
| 808 |
WriteMacInt32(s->output_dt + serdtResult, noErr); |
| 809 |
} else { |
| 810 |
WriteMacInt32(s->output_pb + ioActCount, 0); |
| 811 |
WriteMacInt32(s->output_dt + serdtResult, uint16(writErr)); |
| 812 |
} |
| 813 |
|
| 814 |
// Trigger serial interrupt |
| 815 |
D(bug(" triggering serial interrupt\n")); |
| 816 |
s->write_done = true; |
| 817 |
SetInterruptFlag(INTFLAG_SERIAL); |
| 818 |
TriggerInterrupt(); |
| 819 |
} |
| 820 |
} |
| 821 |
return NULL; |
| 822 |
} |
