Lines Matching +full:overrun +full:- +full:throttle +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0+
3 * cdc-acm.c
41 #include "cdc-acm.h"
71 mutex_lock(&acm->mutex); in acm_get_by_minor()
72 if (acm->disconnected) { in acm_get_by_minor()
73 mutex_unlock(&acm->mutex); in acm_get_by_minor()
76 tty_port_get(&acm->port); in acm_get_by_minor()
77 mutex_unlock(&acm->mutex); in acm_get_by_minor()
102 idr_remove(&acm_minors, acm->minor); in acm_release_minor()
115 retval = usb_autopm_get_interface(acm->control); in acm_ctrl_msg()
119 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), in acm_ctrl_msg()
121 acm->control->altsetting[0].desc.bInterfaceNumber, in acm_ctrl_msg()
124 dev_dbg(&acm->control->dev, in acm_ctrl_msg()
125 "%s - rq 0x%02x, val %#x, len %#x, result %d\n", in acm_ctrl_msg()
128 usb_autopm_put_interface(acm->control); in acm_ctrl_msg()
138 if (acm->quirks & QUIRK_CONTROL_LINE_STATE) in acm_set_control()
139 return -EOPNOTSUPP; in acm_set_control()
147 #define acm_send_break(acm, ms) \ argument
148 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
154 usb_poison_urb(acm->ctrlurb); in acm_poison_urbs()
156 usb_poison_urb(acm->wb[i].urb); in acm_poison_urbs()
157 for (i = 0; i < acm->rx_buflimit; i++) in acm_poison_urbs()
158 usb_poison_urb(acm->read_urbs[i]); in acm_poison_urbs()
165 for (i = 0; i < acm->rx_buflimit; i++) in acm_unpoison_urbs()
166 usb_unpoison_urb(acm->read_urbs[i]); in acm_unpoison_urbs()
168 usb_unpoison_urb(acm->wb[i].urb); in acm_unpoison_urbs()
169 usb_unpoison_urb(acm->ctrlurb); in acm_unpoison_urbs()
186 wb = &acm->wb[wbn]; in acm_wb_alloc()
187 if (!wb->use) { in acm_wb_alloc()
188 wb->use = true; in acm_wb_alloc()
189 wb->len = 0; in acm_wb_alloc()
194 return -1; in acm_wb_alloc()
204 spin_lock_irqsave(&acm->write_lock, flags); in acm_wb_is_avail()
206 if(acm->wb[i].use) in acm_wb_is_avail()
207 n--; in acm_wb_is_avail()
208 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_wb_is_avail()
213 * Finish write. Caller must hold acm->write_lock
217 wb->use = false; in acm_write_done()
218 acm->transmitting--; in acm_write_done()
219 usb_autopm_put_interface_async(acm->control); in acm_write_done()
232 acm->transmitting++; in acm_start_wb()
234 wb->urb->transfer_buffer = wb->buf; in acm_start_wb()
235 wb->urb->transfer_dma = wb->dmah; in acm_start_wb()
236 wb->urb->transfer_buffer_length = wb->len; in acm_start_wb()
237 wb->urb->dev = acm->dev; in acm_start_wb()
239 rc = usb_submit_urb(wb->urb, GFP_ATOMIC); in acm_start_wb()
241 if (rc != -EPERM) in acm_start_wb()
242 dev_err(&acm->data->dev, in acm_start_wb()
243 "%s - usb_submit_urb(write bulk) failed: %d\n", in acm_start_wb()
259 return sprintf(buf, "%d", acm->ctrl_caps); in bmCapabilities_show()
269 memcpy(buf, acm->country_codes, acm->country_code_size); in wCountryCodes_show()
270 return acm->country_code_size; in wCountryCodes_show()
281 return sprintf(buf, "%d", acm->country_rel_date); in iCountryCodeRelDate_show()
297 switch (dr->bNotificationType) { in acm_process_notification()
299 dev_dbg(&acm->control->dev, in acm_process_notification()
300 "%s - network connection: %d\n", __func__, dr->wValue); in acm_process_notification()
304 if (le16_to_cpu(dr->wLength) != 2) { in acm_process_notification()
305 dev_dbg(&acm->control->dev, in acm_process_notification()
306 "%s - malformed serial state\n", __func__); in acm_process_notification()
311 dev_dbg(&acm->control->dev, in acm_process_notification()
312 "%s - serial state: 0x%x\n", __func__, newctrl); in acm_process_notification()
314 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { in acm_process_notification()
315 dev_dbg(&acm->control->dev, in acm_process_notification()
316 "%s - calling hangup\n", __func__); in acm_process_notification()
317 tty_port_tty_hangup(&acm->port, false); in acm_process_notification()
320 difference = acm->ctrlin ^ newctrl; in acm_process_notification()
321 spin_lock_irqsave(&acm->read_lock, flags); in acm_process_notification()
322 acm->ctrlin = newctrl; in acm_process_notification()
323 acm->oldcount = acm->iocount; in acm_process_notification()
326 acm->iocount.dsr++; in acm_process_notification()
328 acm->iocount.dcd++; in acm_process_notification()
330 acm->iocount.brk++; in acm_process_notification()
331 tty_insert_flip_char(&acm->port, 0, TTY_BREAK); in acm_process_notification()
334 acm->iocount.rng++; in acm_process_notification()
336 acm->iocount.frame++; in acm_process_notification()
338 acm->iocount.parity++; in acm_process_notification()
340 acm->iocount.overrun++; in acm_process_notification()
341 spin_unlock_irqrestore(&acm->read_lock, flags); in acm_process_notification()
344 tty_flip_buffer_push(&acm->port); in acm_process_notification()
347 wake_up_all(&acm->wioctl); in acm_process_notification()
352 dev_dbg(&acm->control->dev, in acm_process_notification()
353 "%s - unknown notification %d received: index %d len %d\n", in acm_process_notification()
355 dr->bNotificationType, dr->wIndex, dr->wLength); in acm_process_notification()
362 struct acm *acm = urb->context; in acm_ctrl_irq()
363 struct usb_cdc_notification *dr = urb->transfer_buffer; in acm_ctrl_irq()
364 unsigned int current_size = urb->actual_length; in acm_ctrl_irq()
367 int status = urb->status; in acm_ctrl_irq()
373 case -ECONNRESET: in acm_ctrl_irq()
374 case -ENOENT: in acm_ctrl_irq()
375 case -ESHUTDOWN: in acm_ctrl_irq()
377 dev_dbg(&acm->control->dev, in acm_ctrl_irq()
378 "%s - urb shutting down with status: %d\n", in acm_ctrl_irq()
382 dev_dbg(&acm->control->dev, in acm_ctrl_irq()
383 "%s - nonzero urb status received: %d\n", in acm_ctrl_irq()
388 usb_mark_last_busy(acm->dev); in acm_ctrl_irq()
390 if (acm->nb_index) in acm_ctrl_irq()
391 dr = (struct usb_cdc_notification *)acm->notification_buffer; in acm_ctrl_irq()
393 /* size = notification-header + (optional) data */ in acm_ctrl_irq()
395 le16_to_cpu(dr->wLength); in acm_ctrl_irq()
399 if (acm->nb_size < expected_size) { in acm_ctrl_irq()
403 new_buffer = krealloc(acm->notification_buffer, in acm_ctrl_irq()
406 acm->nb_index = 0; in acm_ctrl_irq()
410 acm->notification_buffer = new_buffer; in acm_ctrl_irq()
411 acm->nb_size = alloc_size; in acm_ctrl_irq()
412 dr = (struct usb_cdc_notification *)acm->notification_buffer; in acm_ctrl_irq()
416 expected_size - acm->nb_index); in acm_ctrl_irq()
418 memcpy(&acm->notification_buffer[acm->nb_index], in acm_ctrl_irq()
419 urb->transfer_buffer, copy_size); in acm_ctrl_irq()
420 acm->nb_index += copy_size; in acm_ctrl_irq()
421 current_size = acm->nb_index; in acm_ctrl_irq()
427 acm->nb_index = 0; in acm_ctrl_irq()
432 if (retval && retval != -EPERM && retval != -ENODEV) in acm_ctrl_irq()
433 dev_err(&acm->control->dev, in acm_ctrl_irq()
434 "%s - usb_submit_urb failed: %d\n", __func__, retval); in acm_ctrl_irq()
436 dev_vdbg(&acm->control->dev, in acm_ctrl_irq()
444 if (!test_and_clear_bit(index, &acm->read_urbs_free)) in acm_submit_read_urb()
447 res = usb_submit_urb(acm->read_urbs[index], mem_flags); in acm_submit_read_urb()
449 if (res != -EPERM && res != -ENODEV) { in acm_submit_read_urb()
450 dev_err(&acm->data->dev, in acm_submit_read_urb()
454 dev_vdbg(&acm->data->dev, "intended failure %d\n", res); in acm_submit_read_urb()
456 set_bit(index, &acm->read_urbs_free); in acm_submit_read_urb()
459 dev_vdbg(&acm->data->dev, "submitted urb %d\n", index); in acm_submit_read_urb()
470 for (i = 0; i < acm->rx_buflimit; ++i) { in acm_submit_read_urbs()
483 if (!urb->actual_length) in acm_process_read_urb()
486 spin_lock_irqsave(&acm->read_lock, flags); in acm_process_read_urb()
487 tty_insert_flip_string(&acm->port, urb->transfer_buffer, in acm_process_read_urb()
488 urb->actual_length); in acm_process_read_urb()
489 spin_unlock_irqrestore(&acm->read_lock, flags); in acm_process_read_urb()
491 tty_flip_buffer_push(&acm->port); in acm_process_read_urb()
496 struct acm_rb *rb = urb->context; in acm_read_bulk_callback()
497 struct acm *acm = rb->instance; in acm_read_bulk_callback()
498 int status = urb->status; in acm_read_bulk_callback()
503 dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n", in acm_read_bulk_callback()
504 rb->index, urb->actual_length, status); in acm_read_bulk_callback()
508 usb_mark_last_busy(acm->dev); in acm_read_bulk_callback()
511 case -EPIPE: in acm_read_bulk_callback()
512 set_bit(EVENT_RX_STALL, &acm->flags); in acm_read_bulk_callback()
515 case -ENOENT: in acm_read_bulk_callback()
516 case -ECONNRESET: in acm_read_bulk_callback()
517 case -ESHUTDOWN: in acm_read_bulk_callback()
518 dev_dbg(&acm->data->dev, in acm_read_bulk_callback()
519 "%s - urb shutting down with status: %d\n", in acm_read_bulk_callback()
523 case -EOVERFLOW: in acm_read_bulk_callback()
524 case -EPROTO: in acm_read_bulk_callback()
525 dev_dbg(&acm->data->dev, in acm_read_bulk_callback()
526 "%s - cooling babbling device\n", __func__); in acm_read_bulk_callback()
527 usb_mark_last_busy(acm->dev); in acm_read_bulk_callback()
528 set_bit(rb->index, &acm->urbs_in_error_delay); in acm_read_bulk_callback()
529 set_bit(ACM_ERROR_DELAY, &acm->flags); in acm_read_bulk_callback()
533 dev_dbg(&acm->data->dev, in acm_read_bulk_callback()
534 "%s - nonzero urb status received: %d\n", in acm_read_bulk_callback()
545 set_bit(rb->index, &acm->read_urbs_free); in acm_read_bulk_callback()
555 schedule_delayed_work(&acm->dwork, 0); in acm_read_bulk_callback()
557 schedule_delayed_work(&acm->dwork, HZ / 2); in acm_read_bulk_callback()
561 if (test_bit(ACM_THROTTLED, &acm->flags)) in acm_read_bulk_callback()
564 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); in acm_read_bulk_callback()
570 struct acm_wb *wb = urb->context; in acm_write_bulk()
571 struct acm *acm = wb->instance; in acm_write_bulk()
573 int status = urb->status; in acm_write_bulk()
575 if (status || (urb->actual_length != urb->transfer_buffer_length)) in acm_write_bulk()
576 dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n", in acm_write_bulk()
577 urb->actual_length, in acm_write_bulk()
578 urb->transfer_buffer_length, in acm_write_bulk()
581 spin_lock_irqsave(&acm->write_lock, flags); in acm_write_bulk()
583 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_write_bulk()
584 set_bit(EVENT_TTY_WAKEUP, &acm->flags); in acm_write_bulk()
585 schedule_delayed_work(&acm->dwork, 0); in acm_write_bulk()
593 if (test_bit(EVENT_RX_STALL, &acm->flags)) { in acm_softint()
595 if (!acm->susp_count) { in acm_softint()
596 for (i = 0; i < acm->rx_buflimit; i++) in acm_softint()
597 usb_kill_urb(acm->read_urbs[i]); in acm_softint()
598 usb_clear_halt(acm->dev, acm->in); in acm_softint()
600 clear_bit(EVENT_RX_STALL, &acm->flags); in acm_softint()
604 if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) { in acm_softint()
605 for (i = 0; i < acm->rx_buflimit; i++) in acm_softint()
606 if (test_and_clear_bit(i, &acm->urbs_in_error_delay)) in acm_softint()
610 if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags)) in acm_softint()
611 tty_port_tty_wakeup(&acm->port); in acm_softint()
623 acm = acm_get_by_minor(tty->index); in acm_tty_install()
625 return -ENODEV; in acm_tty_install()
635 if (acm->quirks & DISABLE_ECHO) in acm_tty_install()
636 tty->termios.c_lflag &= ~ECHO; in acm_tty_install()
638 tty->driver_data = acm; in acm_tty_install()
643 tty_port_put(&acm->port); in acm_tty_install()
649 struct acm *acm = tty->driver_data; in acm_tty_open()
651 return tty_port_open(&acm->port, tty, filp); in acm_tty_open()
666 acm->ctrlout = val; in acm_port_dtr_rts()
669 if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE)) in acm_port_dtr_rts()
671 dev_dbg(&acm->control->dev, "failed to set dtr/rts\n"); in acm_port_dtr_rts()
677 int retval = -ENODEV; in acm_port_activate()
680 mutex_lock(&acm->mutex); in acm_port_activate()
681 if (acm->disconnected) in acm_port_activate()
684 retval = usb_autopm_get_interface(acm->control); in acm_port_activate()
692 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); in acm_port_activate()
693 acm->control->needs_remote_wakeup = 1; in acm_port_activate()
695 acm->ctrlurb->dev = acm->dev; in acm_port_activate()
696 retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); in acm_port_activate()
698 dev_err(&acm->control->dev, in acm_port_activate()
699 "%s - usb_submit_urb(ctrl irq) failed\n", __func__); in acm_port_activate()
708 clear_bit(ACM_THROTTLED, &acm->flags); in acm_port_activate()
714 usb_autopm_put_interface(acm->control); in acm_port_activate()
716 mutex_unlock(&acm->mutex); in acm_port_activate()
721 for (i = 0; i < acm->rx_buflimit; i++) in acm_port_activate()
722 usb_kill_urb(acm->read_urbs[i]); in acm_port_activate()
723 usb_kill_urb(acm->ctrlurb); in acm_port_activate()
725 usb_autopm_put_interface(acm->control); in acm_port_activate()
728 mutex_unlock(&acm->mutex); in acm_port_activate()
737 if (acm->minor != ACM_MINOR_INVALID) in acm_port_destruct()
739 usb_put_intf(acm->control); in acm_port_destruct()
740 kfree(acm->country_codes); in acm_port_destruct()
752 * hold it due to the tty-port initialised flag. in acm_port_shutdown()
755 spin_lock_irq(&acm->write_lock); in acm_port_shutdown()
756 spin_unlock_irq(&acm->write_lock); in acm_port_shutdown()
758 usb_autopm_get_interface_no_resume(acm->control); in acm_port_shutdown()
759 acm->control->needs_remote_wakeup = 0; in acm_port_shutdown()
760 usb_autopm_put_interface(acm->control); in acm_port_shutdown()
763 urb = usb_get_from_anchor(&acm->delayed); in acm_port_shutdown()
766 wb = urb->context; in acm_port_shutdown()
767 wb->use = false; in acm_port_shutdown()
768 usb_autopm_put_interface_async(acm->control); in acm_port_shutdown()
777 struct acm *acm = tty->driver_data; in acm_tty_cleanup()
779 tty_port_put(&acm->port); in acm_tty_cleanup()
784 struct acm *acm = tty->driver_data; in acm_tty_hangup()
786 tty_port_hangup(&acm->port); in acm_tty_hangup()
791 struct acm *acm = tty->driver_data; in acm_tty_close()
793 tty_port_close(&acm->port, tty, filp); in acm_tty_close()
799 struct acm *acm = tty->driver_data; in acm_tty_write()
808 dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); in acm_tty_write()
810 spin_lock_irqsave(&acm->write_lock, flags); in acm_tty_write()
813 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_tty_write()
816 wb = &acm->wb[wbn]; in acm_tty_write()
818 if (!acm->dev) { in acm_tty_write()
819 wb->use = false; in acm_tty_write()
820 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_tty_write()
821 return -ENODEV; in acm_tty_write()
824 count = (count > acm->writesize) ? acm->writesize : count; in acm_tty_write()
825 dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); in acm_tty_write()
826 memcpy(wb->buf, buf, count); in acm_tty_write()
827 wb->len = count; in acm_tty_write()
829 stat = usb_autopm_get_interface_async(acm->control); in acm_tty_write()
831 wb->use = false; in acm_tty_write()
832 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_tty_write()
836 if (acm->susp_count) { in acm_tty_write()
837 usb_anchor_urb(wb->urb, &acm->delayed); in acm_tty_write()
838 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_tty_write()
843 spin_unlock_irqrestore(&acm->write_lock, flags); in acm_tty_write()
852 struct acm *acm = tty->driver_data; in acm_tty_write_room()
857 return acm_wb_is_avail(acm) ? acm->writesize : 0; in acm_tty_write_room()
862 struct acm *acm = tty->driver_data; in acm_tty_chars_in_buffer()
867 if (acm->disconnected) in acm_tty_chars_in_buffer()
872 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; in acm_tty_chars_in_buffer()
877 struct acm *acm = tty->driver_data; in acm_tty_throttle()
879 set_bit(ACM_THROTTLED, &acm->flags); in acm_tty_throttle()
884 struct acm *acm = tty->driver_data; in acm_tty_unthrottle()
886 clear_bit(ACM_THROTTLED, &acm->flags); in acm_tty_unthrottle()
896 struct acm *acm = tty->driver_data; in acm_tty_break_ctl()
901 dev_dbg(&acm->control->dev, in acm_tty_break_ctl()
902 "%s - send break failed\n", __func__); in acm_tty_break_ctl()
908 struct acm *acm = tty->driver_data; in acm_tty_tiocmget()
910 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | in acm_tty_tiocmget()
911 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | in acm_tty_tiocmget()
912 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | in acm_tty_tiocmget()
913 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | in acm_tty_tiocmget()
914 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | in acm_tty_tiocmget()
921 struct acm *acm = tty->driver_data; in acm_tty_tiocmset()
924 newctrl = acm->ctrlout; in acm_tty_tiocmset()
932 if (acm->ctrlout == newctrl) in acm_tty_tiocmset()
934 return acm_set_control(acm, acm->ctrlout = newctrl); in acm_tty_tiocmset()
939 struct acm *acm = tty->driver_data; in get_serial_info()
941 ss->line = acm->minor; in get_serial_info()
942 ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; in get_serial_info()
943 ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? in get_serial_info()
945 jiffies_to_msecs(acm->port.closing_wait) / 10; in get_serial_info()
951 struct acm *acm = tty->driver_data; in set_serial_info()
955 close_delay = msecs_to_jiffies(ss->close_delay * 10); in set_serial_info()
956 closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ? in set_serial_info()
958 msecs_to_jiffies(ss->closing_wait * 10); in set_serial_info()
960 mutex_lock(&acm->port.mutex); in set_serial_info()
963 if ((close_delay != acm->port.close_delay) || in set_serial_info()
964 (closing_wait != acm->port.closing_wait)) in set_serial_info()
965 retval = -EPERM; in set_serial_info()
967 acm->port.close_delay = close_delay; in set_serial_info()
968 acm->port.closing_wait = closing_wait; in set_serial_info()
971 mutex_unlock(&acm->port.mutex); in set_serial_info()
982 spin_lock_irq(&acm->read_lock); in wait_serial_change()
983 old = acm->oldcount; in wait_serial_change()
984 new = acm->iocount; in wait_serial_change()
985 acm->oldcount = new; in wait_serial_change()
986 spin_unlock_irq(&acm->read_lock); in wait_serial_change()
998 add_wait_queue(&acm->wioctl, &wait); in wait_serial_change()
1001 remove_wait_queue(&acm->wioctl, &wait); in wait_serial_change()
1002 if (acm->disconnected) { in wait_serial_change()
1006 rv = -ENODEV; in wait_serial_change()
1009 rv = -ERESTARTSYS; in wait_serial_change()
1021 struct acm *acm = tty->driver_data; in acm_tty_get_icount()
1023 icount->dsr = acm->iocount.dsr; in acm_tty_get_icount()
1024 icount->rng = acm->iocount.rng; in acm_tty_get_icount()
1025 icount->dcd = acm->iocount.dcd; in acm_tty_get_icount()
1026 icount->frame = acm->iocount.frame; in acm_tty_get_icount()
1027 icount->overrun = acm->iocount.overrun; in acm_tty_get_icount()
1028 icount->parity = acm->iocount.parity; in acm_tty_get_icount()
1029 icount->brk = acm->iocount.brk; in acm_tty_get_icount()
1037 struct acm *acm = tty->driver_data; in acm_tty_ioctl()
1038 int rv = -ENOIOCTLCMD; in acm_tty_ioctl()
1042 rv = usb_autopm_get_interface(acm->control); in acm_tty_ioctl()
1044 rv = -EIO; in acm_tty_ioctl()
1048 usb_autopm_put_interface(acm->control); in acm_tty_ioctl()
1058 struct acm *acm = tty->driver_data; in acm_tty_set_termios()
1059 struct ktermios *termios = &tty->termios; in acm_tty_set_termios()
1061 int newctrl = acm->ctrlout; in acm_tty_set_termios()
1064 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; in acm_tty_set_termios()
1065 newline.bParityType = termios->c_cflag & PARENB ? in acm_tty_set_termios()
1066 (termios->c_cflag & PARODD ? 1 : 2) + in acm_tty_set_termios()
1067 (termios->c_cflag & CMSPAR ? 2 : 0) : 0; in acm_tty_set_termios()
1068 newline.bDataBits = tty_get_char_size(termios->c_cflag); in acm_tty_set_termios()
1071 acm->clocal = ((termios->c_cflag & CLOCAL) != 0); in acm_tty_set_termios()
1074 newline.dwDTERate = acm->line.dwDTERate; in acm_tty_set_termios()
1076 } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { in acm_tty_set_termios()
1080 if (newctrl != acm->ctrlout) in acm_tty_set_termios()
1081 acm_set_control(acm, acm->ctrlout = newctrl); in acm_tty_set_termios()
1083 if (memcmp(&acm->line, &newline, sizeof newline)) { in acm_tty_set_termios()
1084 memcpy(&acm->line, &newline, sizeof newline); in acm_tty_set_termios()
1085 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", in acm_tty_set_termios()
1090 acm_set_line(acm, &acm->line); in acm_tty_set_termios()
1111 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) in acm_write_buffers_free()
1112 usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah); in acm_write_buffers_free()
1119 for (i = 0; i < acm->rx_buflimit; i++) in acm_read_buffers_free()
1120 usb_free_coherent(acm->dev, acm->readsize, in acm_read_buffers_free()
1121 acm->read_buffers[i].base, acm->read_buffers[i].dma); in acm_read_buffers_free()
1130 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { in acm_write_buffers_alloc()
1131 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, in acm_write_buffers_alloc()
1132 &wb->dmah); in acm_write_buffers_alloc()
1133 if (!wb->buf) { in acm_write_buffers_alloc()
1135 --i; in acm_write_buffers_alloc()
1136 --wb; in acm_write_buffers_alloc()
1137 usb_free_coherent(acm->dev, acm->writesize, in acm_write_buffers_alloc()
1138 wb->buf, wb->dmah); in acm_write_buffers_alloc()
1140 return -ENOMEM; in acm_write_buffers_alloc()
1151 unsigned char *buffer = intf->altsetting->extra; in acm_probe()
1152 int buflen = intf->altsetting->extralen; in acm_probe()
1164 int call_intf_num = -1; in acm_probe()
1165 int data_intf_num = -1; in acm_probe()
1171 int rv = -ENOMEM; in acm_probe()
1175 quirks = (unsigned long)id->driver_info; in acm_probe()
1178 return -ENODEV; in acm_probe()
1190 return -ENODEV; in acm_probe()
1196 dev_err(&intf->dev, "Weird descriptor references\n"); in acm_probe()
1197 return -EINVAL; in acm_probe()
1201 if (intf->cur_altsetting->endpoint && in acm_probe()
1202 intf->cur_altsetting->endpoint->extralen && in acm_probe()
1203 intf->cur_altsetting->endpoint->extra) { in acm_probe()
1204 dev_dbg(&intf->dev, in acm_probe()
1206 buflen = intf->cur_altsetting->endpoint->extralen; in acm_probe()
1207 buffer = intf->cur_altsetting->endpoint->extra; in acm_probe()
1209 dev_err(&intf->dev, in acm_probe()
1211 return -EINVAL; in acm_probe()
1219 call_intf_num = cmgmd->bDataInterface; in acm_probe()
1222 if (intf->cur_altsetting->desc.bNumEndpoints == 3) { in acm_probe()
1223 dev_dbg(&intf->dev, "No union descriptor, assuming single interface\n"); in acm_probe()
1228 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); in acm_probe()
1233 dev_dbg(&intf->dev, "No union descriptor, giving up\n"); in acm_probe()
1234 return -ENODEV; in acm_probe()
1237 int class = -1; in acm_probe()
1239 data_intf_num = union_header->bSlaveInterface0; in acm_probe()
1240 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); in acm_probe()
1244 class = control_interface->cur_altsetting->desc.bInterfaceClass; in acm_probe()
1247 dev_dbg(&intf->dev, "Broken union descriptor, assuming single interface\n"); in acm_probe()
1255 dev_dbg(&intf->dev, "no interfaces\n"); in acm_probe()
1256 return -ENODEV; in acm_probe()
1260 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); in acm_probe()
1264 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); in acm_probe()
1268 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { in acm_probe()
1269 dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); in acm_probe()
1270 return -EINVAL; in acm_probe()
1273 res = usb_find_common_endpoints(data_interface->cur_altsetting, in acm_probe()
1284 if (data_interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA) { in acm_probe()
1285 if (control_interface->cur_altsetting->desc.bInterfaceClass == USB_CLASS_CDC_DATA) { in acm_probe()
1286 dev_dbg(&intf->dev, in acm_probe()
1290 return -EINVAL; in acm_probe()
1296 return -ENODEV; in acm_probe()
1298 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || in acm_probe()
1299 control_interface->cur_altsetting->desc.bNumEndpoints == 0) in acm_probe()
1300 return -EINVAL; in acm_probe()
1302 epctrl = &control_interface->cur_altsetting->endpoint[0].desc; in acm_probe()
1303 epread = &data_interface->cur_altsetting->endpoint[0].desc; in acm_probe()
1304 epwrite = &data_interface->cur_altsetting->endpoint[1].desc; in acm_probe()
1310 dev_dbg(&intf->dev, in acm_probe()
1315 dev_dbg(&intf->dev, "interfaces are valid\n"); in acm_probe()
1319 return -ENOMEM; in acm_probe()
1321 tty_port_init(&acm->port); in acm_probe()
1322 acm->port.ops = &acm_port_ops; in acm_probe()
1327 acm->combined_interfaces = combined_interfaces; in acm_probe()
1328 acm->writesize = usb_endpoint_maxp(epwrite) * 20; in acm_probe()
1329 acm->control = control_interface; in acm_probe()
1330 acm->data = data_interface; in acm_probe()
1332 usb_get_intf(acm->control); /* undone in destruct() */ in acm_probe()
1336 acm->minor = ACM_MINOR_INVALID; in acm_probe()
1340 acm->minor = minor; in acm_probe()
1341 acm->dev = usb_dev; in acm_probe()
1343 acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities; in acm_probe()
1345 acm->ctrl_caps &= ~USB_CDC_CAP_LINE; in acm_probe()
1346 acm->ctrlsize = ctrlsize; in acm_probe()
1347 acm->readsize = readsize; in acm_probe()
1348 acm->rx_buflimit = num_rx_buf; in acm_probe()
1349 INIT_DELAYED_WORK(&acm->dwork, acm_softint); in acm_probe()
1350 init_waitqueue_head(&acm->wioctl); in acm_probe()
1351 spin_lock_init(&acm->write_lock); in acm_probe()
1352 spin_lock_init(&acm->read_lock); in acm_probe()
1353 mutex_init(&acm->mutex); in acm_probe()
1355 acm->bInterval = epread->bInterval; in acm_probe()
1356 acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress); in acm_probe()
1358 acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); in acm_probe()
1361 acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress); in acm_probe()
1363 acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress); in acm_probe()
1364 init_usb_anchor(&acm->delayed); in acm_probe()
1365 acm->quirks = quirks; in acm_probe()
1367 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); in acm_probe()
1370 acm->ctrl_buffer = buf; in acm_probe()
1375 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); in acm_probe()
1376 if (!acm->ctrlurb) in acm_probe()
1380 struct acm_rb *rb = &(acm->read_buffers[i]); in acm_probe()
1383 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, in acm_probe()
1384 &rb->dma); in acm_probe()
1385 if (!rb->base) in acm_probe()
1387 rb->index = i; in acm_probe()
1388 rb->instance = acm; in acm_probe()
1394 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; in acm_probe()
1395 urb->transfer_dma = rb->dma; in acm_probe()
1397 usb_fill_int_urb(urb, acm->dev, acm->in, rb->base, in acm_probe()
1398 acm->readsize, in acm_probe()
1400 acm->bInterval); in acm_probe()
1402 usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base, in acm_probe()
1403 acm->readsize, in acm_probe()
1406 acm->read_urbs[i] = urb; in acm_probe()
1407 __set_bit(i, &acm->read_urbs_free); in acm_probe()
1410 struct acm_wb *snd = &(acm->wb[i]); in acm_probe()
1412 snd->urb = usb_alloc_urb(0, GFP_KERNEL); in acm_probe()
1413 if (!snd->urb) in acm_probe()
1417 usb_fill_int_urb(snd->urb, usb_dev, acm->out, in acm_probe()
1418 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); in acm_probe()
1420 usb_fill_bulk_urb(snd->urb, usb_dev, acm->out, in acm_probe()
1421 NULL, acm->writesize, acm_write_bulk, snd); in acm_probe()
1422 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; in acm_probe()
1424 snd->urb->transfer_flags |= URB_ZERO_PACKET; in acm_probe()
1425 snd->instance = acm; in acm_probe()
1430 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); in acm_probe()
1438 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); in acm_probe()
1439 if (!acm->country_codes) in acm_probe()
1441 acm->country_code_size = cfd->bLength - 4; in acm_probe()
1442 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, in acm_probe()
1443 cfd->bLength - 4); in acm_probe()
1444 acm->country_rel_date = cfd->iCountryCodeRelDate; in acm_probe()
1446 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); in acm_probe()
1448 kfree(acm->country_codes); in acm_probe()
1449 acm->country_codes = NULL; in acm_probe()
1450 acm->country_code_size = 0; in acm_probe()
1454 i = device_create_file(&intf->dev, in acm_probe()
1457 device_remove_file(&intf->dev, &dev_attr_wCountryCodes); in acm_probe()
1458 kfree(acm->country_codes); in acm_probe()
1459 acm->country_codes = NULL; in acm_probe()
1460 acm->country_code_size = 0; in acm_probe()
1466 usb_fill_int_urb(acm->ctrlurb, usb_dev, in acm_probe()
1467 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), in acm_probe()
1468 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, in acm_probe()
1470 epctrl->bInterval ? epctrl->bInterval : 16); in acm_probe()
1471 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; in acm_probe()
1472 acm->ctrlurb->transfer_dma = acm->ctrl_dma; in acm_probe()
1473 acm->notification_buffer = NULL; in acm_probe()
1474 acm->nb_index = 0; in acm_probe()
1475 acm->nb_size = 0; in acm_probe()
1477 acm->line.dwDTERate = cpu_to_le32(9600); in acm_probe()
1478 acm->line.bDataBits = 8; in acm_probe()
1479 acm_set_line(acm, &acm->line); in acm_probe()
1481 if (!acm->combined_interfaces) { in acm_probe()
1487 tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, in acm_probe()
1488 &control_interface->dev); in acm_probe()
1495 usb_clear_halt(usb_dev, acm->in); in acm_probe()
1496 usb_clear_halt(usb_dev, acm->out); in acm_probe()
1499 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); in acm_probe()
1504 if (!acm->combined_interfaces) { in acm_probe()
1510 if (acm->country_codes) { in acm_probe()
1511 device_remove_file(&acm->control->dev, in acm_probe()
1513 device_remove_file(&acm->control->dev, in acm_probe()
1516 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); in acm_probe()
1519 usb_free_urb(acm->wb[i].urb); in acm_probe()
1522 usb_free_urb(acm->read_urbs[i]); in acm_probe()
1524 usb_free_urb(acm->ctrlurb); in acm_probe()
1528 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); in acm_probe()
1530 tty_port_put(&acm->port); in acm_probe()
1545 acm->disconnected = true; in acm_disconnect()
1552 mutex_lock(&acm->mutex); in acm_disconnect()
1553 if (acm->country_codes) { in acm_disconnect()
1554 device_remove_file(&acm->control->dev, in acm_disconnect()
1556 device_remove_file(&acm->control->dev, in acm_disconnect()
1559 wake_up_all(&acm->wioctl); in acm_disconnect()
1560 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); in acm_disconnect()
1561 usb_set_intfdata(acm->control, NULL); in acm_disconnect()
1562 usb_set_intfdata(acm->data, NULL); in acm_disconnect()
1563 mutex_unlock(&acm->mutex); in acm_disconnect()
1565 tty = tty_port_tty_get(&acm->port); in acm_disconnect()
1571 cancel_delayed_work_sync(&acm->dwork); in acm_disconnect()
1573 tty_unregister_device(acm_tty_driver, acm->minor); in acm_disconnect()
1575 usb_free_urb(acm->ctrlurb); in acm_disconnect()
1577 usb_free_urb(acm->wb[i].urb); in acm_disconnect()
1578 for (i = 0; i < acm->rx_buflimit; i++) in acm_disconnect()
1579 usb_free_urb(acm->read_urbs[i]); in acm_disconnect()
1581 usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); in acm_disconnect()
1584 kfree(acm->notification_buffer); in acm_disconnect()
1586 if (!acm->combined_interfaces) in acm_disconnect()
1587 usb_driver_release_interface(&acm_driver, intf == acm->control ? in acm_disconnect()
1588 acm->data : acm->control); in acm_disconnect()
1590 tty_port_put(&acm->port); in acm_disconnect()
1599 spin_lock_irq(&acm->write_lock); in acm_suspend()
1601 if (acm->transmitting) { in acm_suspend()
1602 spin_unlock_irq(&acm->write_lock); in acm_suspend()
1603 return -EBUSY; in acm_suspend()
1606 cnt = acm->susp_count++; in acm_suspend()
1607 spin_unlock_irq(&acm->write_lock); in acm_suspend()
1613 cancel_delayed_work_sync(&acm->dwork); in acm_suspend()
1614 acm->urbs_in_error_delay = 0; in acm_suspend()
1625 spin_lock_irq(&acm->write_lock); in acm_resume()
1627 if (--acm->susp_count) in acm_resume()
1632 if (tty_port_initialized(&acm->port)) { in acm_resume()
1633 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC); in acm_resume()
1636 urb = usb_get_from_anchor(&acm->delayed); in acm_resume()
1640 acm_start_wb(acm, urb->context); in acm_resume()
1653 spin_unlock_irq(&acm->write_lock); in acm_resume()
1662 if (tty_port_initialized(&acm->port)) in acm_reset_resume()
1663 tty_port_tty_hangup(&acm->port, false); in acm_reset_resume()
1674 clear_bit(EVENT_RX_STALL, &acm->flags); in acm_pre_reset()
1675 acm->nb_index = 0; /* pending control transfers are lost */ in acm_pre_reset()
1698 { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */
1723 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1726 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1735 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1753 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1756 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1764 { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
1765 { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */
1799 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1805 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1811 { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */
1826 * a modem and is picked up by the standard AT-command
1827 * information below. The second is 'vendor-specific' but
1860 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1863 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1864 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1869 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1872 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1873 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1892 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1969 /* control interfaces with various AT-command sets */
2022 .throttle = acm_tty_throttle,
2045 acm_tty_driver->driver_name = "acm", in acm_init()
2046 acm_tty_driver->name = "ttyACM", in acm_init()
2047 acm_tty_driver->major = ACM_TTY_MAJOR, in acm_init()
2048 acm_tty_driver->minor_start = 0, in acm_init()
2049 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, in acm_init()
2050 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, in acm_init()
2051 acm_tty_driver->init_termios = tty_std_termios; in acm_init()
2052 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | in acm_init()