/* * QEMU System Emulator * * Copyright (c) 2003-2008 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu/osdep.h" #include "qemu/option.h" #include "qemu/sockets.h" #include "io/channel-file.h" #include "qapi/error.h" #ifdef _WIN32 #include "chardev/char-win.h" #else #include <sys/ioctl.h> #include <termios.h> #include "chardev/char-fd.h" #endif #include "chardev/char-serial.h" #ifdef _WIN32 static void qmp_chardev_open_serial(Chardev *chr, ChardevBackend *backend, bool *be_opened, Error **errp) { ChardevHostdev *serial = backend->u.serial.data; win_chr_serial_init(chr, serial->device, errp); } #elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ || defined(__GLIBC__) static void tty_serial_init(int fd, int speed, int parity, int data_bits, int stop_bits) { struct termios tty; speed_t spd; #if 0 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", speed, parity, data_bits, stop_bits); #endif tcgetattr(fd, &tty); #define check_speed(val) \ if (speed <= val) { \ spd = B##val; \ goto done; \ } speed = speed * 10 / 11; check_speed(50); check_speed(75); check_speed(110); check_speed(134); check_speed(150); check_speed(200); check_speed(300); check_speed(600); check_speed(1200); check_speed(1800); check_speed(2400); check_speed(4800); check_speed(9600); check_speed(19200); check_speed(38400); /* Non-Posix values follow. They may be unsupported on some systems. */ check_speed(57600); check_speed(115200); #ifdef B230400 check_speed(230400); #endif #ifdef B460800 check_speed(460800); #endif #ifdef B500000 check_speed(500000); #endif #ifdef B576000 check_speed(576000); #endif #ifdef B921600 check_speed(921600); #endif #ifdef B1000000 check_speed(1000000); #endif #ifdef B1152000 check_speed(1152000); #endif #ifdef B1500000 check_speed(1500000); #endif #ifdef B2000000 check_speed(2000000); #endif #ifdef B2500000 check_speed(2500000); #endif #ifdef B3000000 check_speed(3000000); #endif #ifdef B3500000 check_speed(3500000); #endif #ifdef B4000000 check_speed(4000000); #endif spd = B115200; #undef check_speed done: cfsetispeed(&tty, spd); cfsetospeed(&tty, spd); tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON); tty.c_oflag |= OPOST; tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG); tty.c_cflag &= ~(CSIZE | PARENB | PARODD | CRTSCTS | CSTOPB); switch (data_bits) { default: case 8: tty.c_cflag |= CS8; break; case 7: tty.c_cflag |= CS7; break; case 6: tty.c_cflag |= CS6; break; case 5: tty.c_cflag |= CS5; break; } switch (parity) { default: case 'N': break; case 'E': tty.c_cflag |= PARENB; break; case 'O': tty.c_cflag |= PARENB | PARODD; break; } if (stop_bits == 2) { tty.c_cflag |= CSTOPB; } tcsetattr(fd, TCSANOW, &tty); } static int tty_serial_ioctl(Chardev *chr, int cmd, void *arg) { FDChardev *s = FD_CHARDEV(chr); QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in); switch (cmd) { case CHR_IOCTL_SERIAL_SET_PARAMS: { QEMUSerialSetParams *ssp = arg; tty_serial_init(fioc->fd, ssp->speed, ssp->parity, ssp->data_bits, ssp->stop_bits); } break; case CHR_IOCTL_SERIAL_SET_BREAK: { int enable = *(int *)arg; if (enable) { tcsendbreak(fioc->fd, 1); } } break; case CHR_IOCTL_SERIAL_GET_TIOCM: { int sarg = 0; int *targ = (int *)arg; ioctl(fioc->fd, TIOCMGET, &sarg); *targ = 0; if (sarg & TIOCM_CTS) { *targ |= CHR_TIOCM_CTS; } if (sarg & TIOCM_CAR) { *targ |= CHR_TIOCM_CAR; } if (sarg & TIOCM_DSR) { *targ |= CHR_TIOCM_DSR; } if (sarg & TIOCM_RI) { *targ |= CHR_TIOCM_RI; } if (sarg & TIOCM_DTR) { *targ |= CHR_TIOCM_DTR; } if (sarg & TIOCM_RTS) { *targ |= CHR_TIOCM_RTS; } } break; case CHR_IOCTL_SERIAL_SET_TIOCM: { int sarg = *(int *)arg; int targ = 0; ioctl(fioc->fd, TIOCMGET, &targ); targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); if (sarg & CHR_TIOCM_CTS) { targ |= TIOCM_CTS; } if (sarg & CHR_TIOCM_CAR) { targ |= TIOCM_CAR; } if (sarg & CHR_TIOCM_DSR) { targ |= TIOCM_DSR; } if (sarg & CHR_TIOCM_RI) { targ |= TIOCM_RI; } if (sarg & CHR_TIOCM_DTR) { targ |= TIOCM_DTR; } if (sarg & CHR_TIOCM_RTS) { targ |= TIOCM_RTS; } ioctl(fioc->fd, TIOCMSET, &targ); } break; default: return -ENOTSUP; } return 0; } static void qmp_chardev_open_serial(Chardev *chr, ChardevBackend *backend, bool *be_opened, Error **errp) { ChardevHostdev *serial = backend->u.serial.data; int fd; fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); if (fd < 0) { return; } qemu_set_nonblock(fd); tty_serial_init(fd, 115200, 'N', 8, 1); qemu_chr_open_fd(chr, fd, fd); } #endif /* __linux__ || __sun__ */ #ifdef HAVE_CHARDEV_SERIAL static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, Error **errp) { const char *device = qemu_opt_get(opts, "path"); ChardevHostdev *serial; if (device == NULL) { error_setg(errp, "chardev: serial/tty: no device path given"); return; } backend->type = CHARDEV_BACKEND_KIND_SERIAL; serial = backend->u.serial.data = g_new0(ChardevHostdev, 1); qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial)); serial->device = g_strdup(device); } static void char_serial_class_init(ObjectClass *oc, void *data) { ChardevClass *cc = CHARDEV_CLASS(oc); cc->parse = qemu_chr_parse_serial; cc->open = qmp_chardev_open_serial; #ifndef _WIN32 cc->chr_ioctl = tty_serial_ioctl; #endif } static const TypeInfo char_serial_type_info = { .name = TYPE_CHARDEV_SERIAL, #ifdef _WIN32 .parent = TYPE_CHARDEV_WIN, #else .parent = TYPE_CHARDEV_FD, #endif .class_init = char_serial_class_init, }; static void register_types(void) { type_register_static(&char_serial_type_info); } type_init(register_types); #endif