Lines Matching +full:vcc +full:- +full:p
1 // SPDX-License-Identifier: GPL-2.0+
3 * usbatm.c - Generic USB xDSL driver core
13 * 1.7+: - See the check-in logs
15 * 1.6: - No longer opens a connection if the firmware is not loaded
16 * - Added support for the speedtouch 330
17 * - Removed the limit on the number of devices
18 * - Module now autoloads on device plugin
19 * - Merged relevant parts of sarlib
20 * - Replaced the kernel thread with a tasklet
21 * - New packet transmission code
22 * - Changed proc file contents
23 * - Fixed all known SMP races
24 * - Many fixes and cleanups
25 * - Various fixes by Oliver Neukum (oliver@neukum.name)
27 * 1.5A: - Version for inclusion in 2.5 series kernel
28 * - Modifications by Richard Purdie (rpurdie@rpsys.net)
29 * - made compatible with kernel 2.5.6 onwards by changing
30 * usbatm_usb_send_data_context->urb to a pointer and adding code
32 * - remove_wait_queue() added to usbatm_atm_processqueue_thread()
34 * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL.
37 * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave()
38 * - unlink all active send urbs of a vcc that is being closed.
40 * 1.3.1: - added the version number
42 * 1.3: - Added multiple send urb support
43 * - fixed memory leak and vcc->tx_inuse starvation bug
44 * when not enough memory left in vcc.
46 * 1.2: - Fixed race condition in usbatm_usb_send_data()
47 * 1.1: - Turned off packet debugging
94 #define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
105 "Number of urbs used for reception (range: 0-"
111 "Number of urbs used for transmission (range: 0-"
117 "Size of the buffers used for reception, in bytes (range: 1-"
123 "Size of the buffers used for transmission, in bytes (range: 1-"
135 struct atm_vcc *vcc; member
150 #define UDSL_SKB(x) ((struct usbatm_control *)(x)->cb)
156 static int usbatm_atm_open(struct atm_vcc *vcc);
157 static void usbatm_atm_close(struct atm_vcc *vcc);
159 static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb);
179 length += ATM_CELL_PAYLOAD - 1 + ATM_AAL5_TRAILER; in usbatm_pdu_length()
180 return length - length % ATM_CELL_PAYLOAD; in usbatm_pdu_length()
183 static inline void usbatm_pop(struct atm_vcc *vcc, struct sk_buff *skb) in usbatm_pop() argument
185 if (vcc->pop) in usbatm_pop()
186 vcc->pop(vcc, skb); in usbatm_pop()
200 spin_lock_irq(&channel->lock); in usbatm_pop_urb()
201 if (list_empty(&channel->list)) { in usbatm_pop_urb()
202 spin_unlock_irq(&channel->lock); in usbatm_pop_urb()
206 urb = list_entry(channel->list.next, struct urb, urb_list); in usbatm_pop_urb()
207 list_del(&urb->urb_list); in usbatm_pop_urb()
208 spin_unlock_irq(&channel->lock); in usbatm_pop_urb()
215 struct usbatm_channel *channel = urb->context; in usbatm_submit_urb()
218 /* vdbg("%s: submitting urb 0x%p, size %u", in usbatm_submit_urb()
219 __func__, urb, urb->transfer_buffer_length); */ in usbatm_submit_urb()
224 atm_warn(channel->usbatm, "%s: urb 0x%p submission failed (%d)!\n", in usbatm_submit_urb()
228 urb->status = -EAGAIN; in usbatm_submit_urb()
229 spin_lock_irq(&channel->lock); in usbatm_submit_urb()
232 list_add(&urb->urb_list, &channel->list); in usbatm_submit_urb()
234 spin_unlock_irq(&channel->lock); in usbatm_submit_urb()
237 mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS)); in usbatm_submit_urb()
245 struct usbatm_channel *channel = urb->context; in usbatm_complete()
247 int status = urb->status; in usbatm_complete()
249 /* vdbg("%s: urb 0x%p, status %d, actual_length %d", in usbatm_complete()
250 __func__, urb, status, urb->actual_length); */ in usbatm_complete()
253 spin_lock_irqsave(&channel->lock, flags); in usbatm_complete()
256 list_add_tail(&urb->urb_list, &channel->list); in usbatm_complete()
258 spin_unlock_irqrestore(&channel->lock, flags); in usbatm_complete()
261 (!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) || in usbatm_complete()
262 status != -EILSEQ)) { in usbatm_complete()
263 if (status == -ESHUTDOWN) in usbatm_complete()
267 atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n", in usbatm_complete()
270 mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS)); in usbatm_complete()
272 tasklet_schedule(&channel->tasklet); in usbatm_complete()
285 list_for_each_entry(vcc_data, &instance->vcc_list, list) in usbatm_find_vcc()
286 if ((vcc_data->vci == vci) && (vcc_data->vpi == vpi)) in usbatm_find_vcc()
293 struct atm_vcc *vcc; in usbatm_extract_one_cell() local
299 if ((vci != instance->cached_vci) || (vpi != instance->cached_vpi)) { in usbatm_extract_one_cell()
300 instance->cached_vpi = vpi; in usbatm_extract_one_cell()
301 instance->cached_vci = vci; in usbatm_extract_one_cell()
303 instance->cached_vcc = usbatm_find_vcc(instance, vpi, vci); in usbatm_extract_one_cell()
305 if (!instance->cached_vcc) in usbatm_extract_one_cell()
309 if (!instance->cached_vcc) in usbatm_extract_one_cell()
312 vcc = instance->cached_vcc->vcc; in usbatm_extract_one_cell()
314 /* OAM F5 end-to-end */ in usbatm_extract_one_cell()
319 atomic_inc(&vcc->stats->rx_err); in usbatm_extract_one_cell()
323 sarb = instance->cached_vcc->sarb; in usbatm_extract_one_cell()
325 if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) { in usbatm_extract_one_cell()
326 atm_rldbg(instance, "%s: buffer overrun (sarb->len %u, vcc: 0x%p)!\n", in usbatm_extract_one_cell()
327 __func__, sarb->len, vcc); in usbatm_extract_one_cell()
340 length = (source[ATM_CELL_SIZE - 6] << 8) + source[ATM_CELL_SIZE - 5]; in usbatm_extract_one_cell()
344 atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n", in usbatm_extract_one_cell()
345 __func__, length, vcc); in usbatm_extract_one_cell()
346 atomic_inc(&vcc->stats->rx_err); in usbatm_extract_one_cell()
352 if (sarb->len < pdu_length) { in usbatm_extract_one_cell()
353 atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n", in usbatm_extract_one_cell()
354 __func__, pdu_length, sarb->len, vcc); in usbatm_extract_one_cell()
355 atomic_inc(&vcc->stats->rx_err); in usbatm_extract_one_cell()
359 if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) { in usbatm_extract_one_cell()
360 atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n", in usbatm_extract_one_cell()
361 __func__, vcc); in usbatm_extract_one_cell()
362 atomic_inc(&vcc->stats->rx_err); in usbatm_extract_one_cell()
366 vdbg(&instance->usb_intf->dev, in usbatm_extract_one_cell()
367 "%s: got packet (length: %u, pdu_length: %u, vcc: 0x%p)", in usbatm_extract_one_cell()
368 __func__, length, pdu_length, vcc); in usbatm_extract_one_cell()
375 atomic_inc(&vcc->stats->rx_drop); in usbatm_extract_one_cell()
379 vdbg(&instance->usb_intf->dev, in usbatm_extract_one_cell()
380 "%s: allocated new sk_buff (skb: 0x%p, skb->truesize: %u)", in usbatm_extract_one_cell()
381 __func__, skb, skb->truesize); in usbatm_extract_one_cell()
383 if (!atm_charge(vcc, skb->truesize)) { in usbatm_extract_one_cell()
384 atm_rldbg(instance, "%s: failed atm_charge (skb->truesize: %u)!\n", in usbatm_extract_one_cell()
385 __func__, skb->truesize); in usbatm_extract_one_cell()
391 skb_tail_pointer(sarb) - pdu_length, in usbatm_extract_one_cell()
395 vdbg(&instance->usb_intf->dev, in usbatm_extract_one_cell()
396 "%s: sending skb 0x%p, skb->len %u, skb->truesize %u", in usbatm_extract_one_cell()
397 __func__, skb, skb->len, skb->truesize); in usbatm_extract_one_cell()
399 PACKETDEBUG(instance, skb->data, skb->len); in usbatm_extract_one_cell()
401 vcc->push(vcc, skb); in usbatm_extract_one_cell()
403 atomic_inc(&vcc->stats->rx); in usbatm_extract_one_cell()
412 unsigned int stride = instance->rx_channel.stride; in usbatm_extract_cells()
413 unsigned int buf_usage = instance->buf_usage; in usbatm_extract_cells()
420 unsigned char *cell_buf = instance->cell_buf; in usbatm_extract_cells()
421 unsigned int space_left = stride - buf_usage; in usbatm_extract_cells()
427 avail_data -= space_left; in usbatm_extract_cells()
429 instance->buf_usage = 0; in usbatm_extract_cells()
433 instance->buf_usage = buf_usage + avail_data; in usbatm_extract_cells()
438 for (; avail_data >= stride; avail_data -= stride, source += stride) in usbatm_extract_cells()
442 /* length was not a multiple of stride - in usbatm_extract_cells()
444 memcpy(instance->cell_buf, source, avail_data); in usbatm_extract_cells()
445 instance->buf_usage = avail_data; in usbatm_extract_cells()
459 struct atm_vcc *vcc = ctrl->atm.vcc; in usbatm_write_cells() local
461 unsigned int stride = instance->tx_channel.stride; in usbatm_write_cells()
463 for (bytes_written = 0; bytes_written < avail_space && ctrl->len; in usbatm_write_cells()
465 unsigned int data_len = min_t(unsigned int, skb->len, ATM_CELL_PAYLOAD); in usbatm_write_cells()
466 unsigned int left = ATM_CELL_PAYLOAD - data_len; in usbatm_write_cells()
469 ptr[0] = vcc->vpi >> 4; in usbatm_write_cells()
470 ptr[1] = (vcc->vpi << 4) | (vcc->vci >> 12); in usbatm_write_cells()
471 ptr[2] = vcc->vci >> 4; in usbatm_write_cells()
472 ptr[3] = vcc->vci << 4; in usbatm_write_cells()
486 u8 *trailer = target + ATM_CELL_SIZE - ATM_AAL5_TRAILER; in usbatm_write_cells()
489 trailer[2] = ctrl->len >> 8; in usbatm_write_cells()
490 trailer[3] = ctrl->len; in usbatm_write_cells()
492 ctrl->crc = ~crc32_be(ctrl->crc, ptr, left - 4); in usbatm_write_cells()
494 trailer[4] = ctrl->crc >> 24; in usbatm_write_cells()
495 trailer[5] = ctrl->crc >> 16; in usbatm_write_cells()
496 trailer[6] = ctrl->crc >> 8; in usbatm_write_cells()
497 trailer[7] = ctrl->crc; in usbatm_write_cells()
501 ctrl->len = 0; /* tag this skb finished */ in usbatm_write_cells()
503 ctrl->crc = crc32_be(ctrl->crc, ptr, left); in usbatm_write_cells()
519 while ((urb = usbatm_pop_urb(&instance->rx_channel))) { in usbatm_rx_process()
520 vdbg(&instance->usb_intf->dev, in usbatm_rx_process()
521 "%s: processing urb 0x%p", __func__, urb); in usbatm_rx_process()
523 if (usb_pipeisoc(urb->pipe)) { in usbatm_rx_process()
526 const unsigned int packet_size = instance->rx_channel.packet_size; in usbatm_rx_process()
529 for (i = 0; i < urb->number_of_packets; i++) { in usbatm_rx_process()
530 if (!urb->iso_frame_desc[i].status) { in usbatm_rx_process()
531 unsigned int actual_length = urb->iso_frame_desc[i].actual_length; in usbatm_rx_process()
534 merge_start = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; in usbatm_rx_process()
541 atm_rldbg(instance, "%s: status %d in frame %d!\n", __func__, urb->status, i); in usbatm_rx_process()
545 instance->buf_usage = 0; in usbatm_rx_process()
552 if (!urb->status) in usbatm_rx_process()
553 usbatm_extract_cells(instance, urb->transfer_buffer, urb->actual_length); in usbatm_rx_process()
555 instance->buf_usage = 0; in usbatm_rx_process()
570 struct sk_buff *skb = instance->current_skb; in usbatm_tx_process()
572 const unsigned int buf_size = instance->tx_channel.buf_size; in usbatm_tx_process()
577 skb = skb_dequeue(&instance->sndqueue); in usbatm_tx_process()
581 urb = usbatm_pop_urb(&instance->tx_channel); in usbatm_tx_process()
584 buffer = urb->transfer_buffer; in usbatm_tx_process()
585 bytes_written = (urb->status == -EAGAIN) ? in usbatm_tx_process()
586 urb->transfer_buffer_length : 0; in usbatm_tx_process()
591 buf_size - bytes_written); in usbatm_tx_process()
593 vdbg(&instance->usb_intf->dev, in usbatm_tx_process()
594 "%s: wrote %u bytes from skb 0x%p to urb 0x%p", in usbatm_tx_process()
597 if (!UDSL_SKB(skb)->len) { in usbatm_tx_process()
598 struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc; in usbatm_tx_process() local
600 usbatm_pop(vcc, skb); in usbatm_tx_process()
601 atomic_inc(&vcc->stats->tx); in usbatm_tx_process()
603 skb = skb_dequeue(&instance->sndqueue); in usbatm_tx_process()
607 urb->transfer_buffer_length = bytes_written; in usbatm_tx_process()
615 instance->current_skb = skb; in usbatm_tx_process()
619 struct atm_vcc *vcc) in usbatm_cancel_send() argument
623 spin_lock_irq(&instance->sndqueue.lock); in usbatm_cancel_send()
624 skb_queue_walk_safe(&instance->sndqueue, skb, n) { in usbatm_cancel_send()
625 if (UDSL_SKB(skb)->atm.vcc == vcc) { in usbatm_cancel_send()
626 atm_dbg(instance, "%s: popping skb 0x%p\n", __func__, skb); in usbatm_cancel_send()
627 __skb_unlink(skb, &instance->sndqueue); in usbatm_cancel_send()
628 usbatm_pop(vcc, skb); in usbatm_cancel_send()
631 spin_unlock_irq(&instance->sndqueue.lock); in usbatm_cancel_send()
633 tasklet_disable(&instance->tx_channel.tasklet); in usbatm_cancel_send()
634 if ((skb = instance->current_skb) && (UDSL_SKB(skb)->atm.vcc == vcc)) { in usbatm_cancel_send()
635 atm_dbg(instance, "%s: popping current skb (0x%p)\n", __func__, skb); in usbatm_cancel_send()
636 instance->current_skb = NULL; in usbatm_cancel_send()
637 usbatm_pop(vcc, skb); in usbatm_cancel_send()
639 tasklet_enable(&instance->tx_channel.tasklet); in usbatm_cancel_send()
642 static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) in usbatm_atm_send() argument
644 struct usbatm_data *instance = vcc->dev->dev_data; in usbatm_atm_send()
648 /* racy disconnection check - fine */ in usbatm_atm_send()
649 if (!instance || instance->disconnected) { in usbatm_atm_send()
653 err = -ENODEV; in usbatm_atm_send()
657 if (vcc->qos.aal != ATM_AAL5) { in usbatm_atm_send()
658 atm_rldbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); in usbatm_atm_send()
659 err = -EINVAL; in usbatm_atm_send()
663 if (skb->len > ATM_MAX_AAL5_PDU) { in usbatm_atm_send()
665 __func__, skb->len, ATM_MAX_AAL5_PDU); in usbatm_atm_send()
666 err = -EINVAL; in usbatm_atm_send()
670 PACKETDEBUG(instance, skb->data, skb->len); in usbatm_atm_send()
673 ctrl->atm.vcc = vcc; in usbatm_atm_send()
674 ctrl->len = skb->len; in usbatm_atm_send()
675 ctrl->crc = crc32_be(~0, skb->data, skb->len); in usbatm_atm_send()
677 skb_queue_tail(&instance->sndqueue, skb); in usbatm_atm_send()
678 tasklet_schedule(&instance->tx_channel.tasklet); in usbatm_atm_send()
683 usbatm_pop(vcc, skb); in usbatm_atm_send()
696 tasklet_kill(&instance->rx_channel.tasklet); in usbatm_destroy_instance()
697 tasklet_kill(&instance->tx_channel.tasklet); in usbatm_destroy_instance()
698 usb_put_dev(instance->usb_dev); in usbatm_destroy_instance()
704 kref_get(&instance->refcount); in usbatm_get_instance()
709 kref_put(&instance->refcount, usbatm_destroy_instance); in usbatm_put_instance()
719 struct usbatm_data *instance = atm_dev->dev_data; in usbatm_atm_dev_close()
724 atm_dev->dev_data = NULL; /* catch bugs */ in usbatm_atm_dev_close()
730 struct usbatm_data *instance = atm_dev->dev_data; in usbatm_atm_proc_read()
734 return -ENODEV; in usbatm_atm_proc_read()
736 if (!left--) in usbatm_atm_proc_read()
737 return sprintf(page, "%s\n", instance->description); in usbatm_atm_proc_read()
739 if (!left--) in usbatm_atm_proc_read()
740 return sprintf(page, "MAC: %pM\n", atm_dev->esi); in usbatm_atm_proc_read()
742 if (!left--) in usbatm_atm_proc_read()
745 atomic_read(&atm_dev->stats.aal5.tx), in usbatm_atm_proc_read()
746 atomic_read(&atm_dev->stats.aal5.tx_err), in usbatm_atm_proc_read()
747 atomic_read(&atm_dev->stats.aal5.rx), in usbatm_atm_proc_read()
748 atomic_read(&atm_dev->stats.aal5.rx_err), in usbatm_atm_proc_read()
749 atomic_read(&atm_dev->stats.aal5.rx_drop)); in usbatm_atm_proc_read()
751 if (!left--) { in usbatm_atm_proc_read()
752 if (instance->disconnected) in usbatm_atm_proc_read()
755 switch (atm_dev->signal) { in usbatm_atm_proc_read()
768 static int usbatm_atm_open(struct atm_vcc *vcc) in usbatm_atm_open() argument
770 struct usbatm_data *instance = vcc->dev->dev_data; in usbatm_atm_open()
773 int vci = vcc->vci; in usbatm_atm_open()
774 short vpi = vcc->vpi; in usbatm_atm_open()
777 return -ENODEV; in usbatm_atm_open()
780 if ((vcc->qos.aal != ATM_AAL5)) { in usbatm_atm_open()
781 atm_warn(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); in usbatm_atm_open()
782 return -EINVAL; in usbatm_atm_open()
786 if ((vcc->qos.rxtp.max_sdu < 0) || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) { in usbatm_atm_open()
787 atm_dbg(instance, "%s: max_sdu %d out of range!\n", __func__, vcc->qos.rxtp.max_sdu); in usbatm_atm_open()
788 return -EINVAL; in usbatm_atm_open()
791 mutex_lock(&instance->serialize); /* vs self, usbatm_atm_close, usbatm_usb_disconnect */ in usbatm_atm_open()
793 if (instance->disconnected) { in usbatm_atm_open()
795 ret = -ENODEV; in usbatm_atm_open()
801 ret = -EADDRINUSE; in usbatm_atm_open()
807 ret = -ENOMEM; in usbatm_atm_open()
811 new->vcc = vcc; in usbatm_atm_open()
812 new->vpi = vpi; in usbatm_atm_open()
813 new->vci = vci; in usbatm_atm_open()
815 new->sarb = alloc_skb(usbatm_pdu_length(vcc->qos.rxtp.max_sdu), GFP_KERNEL); in usbatm_atm_open()
816 if (!new->sarb) { in usbatm_atm_open()
818 ret = -ENOMEM; in usbatm_atm_open()
822 vcc->dev_data = new; in usbatm_atm_open()
824 tasklet_disable(&instance->rx_channel.tasklet); in usbatm_atm_open()
825 instance->cached_vcc = new; in usbatm_atm_open()
826 instance->cached_vpi = vpi; in usbatm_atm_open()
827 instance->cached_vci = vci; in usbatm_atm_open()
828 list_add(&new->list, &instance->vcc_list); in usbatm_atm_open()
829 tasklet_enable(&instance->rx_channel.tasklet); in usbatm_atm_open()
831 set_bit(ATM_VF_ADDR, &vcc->flags); in usbatm_atm_open()
832 set_bit(ATM_VF_PARTIAL, &vcc->flags); in usbatm_atm_open()
833 set_bit(ATM_VF_READY, &vcc->flags); in usbatm_atm_open()
835 mutex_unlock(&instance->serialize); in usbatm_atm_open()
837 atm_dbg(instance, "%s: allocated vcc data 0x%p\n", __func__, new); in usbatm_atm_open()
843 mutex_unlock(&instance->serialize); in usbatm_atm_open()
847 static void usbatm_atm_close(struct atm_vcc *vcc) in usbatm_atm_close() argument
849 struct usbatm_data *instance = vcc->dev->dev_data; in usbatm_atm_close()
850 struct usbatm_vcc_data *vcc_data = vcc->dev_data; in usbatm_atm_close()
855 usbatm_cancel_send(instance, vcc); in usbatm_atm_close()
857 mutex_lock(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ in usbatm_atm_close()
859 tasklet_disable(&instance->rx_channel.tasklet); in usbatm_atm_close()
860 if (instance->cached_vcc == vcc_data) { in usbatm_atm_close()
861 instance->cached_vcc = NULL; in usbatm_atm_close()
862 instance->cached_vpi = ATM_VPI_UNSPEC; in usbatm_atm_close()
863 instance->cached_vci = ATM_VCI_UNSPEC; in usbatm_atm_close()
865 list_del(&vcc_data->list); in usbatm_atm_close()
866 tasklet_enable(&instance->rx_channel.tasklet); in usbatm_atm_close()
868 kfree_skb(vcc_data->sarb); in usbatm_atm_close()
869 vcc_data->sarb = NULL; in usbatm_atm_close()
872 vcc->dev_data = NULL; in usbatm_atm_close()
874 vcc->vpi = ATM_VPI_UNSPEC; in usbatm_atm_close()
875 vcc->vci = ATM_VCI_UNSPEC; in usbatm_atm_close()
876 clear_bit(ATM_VF_READY, &vcc->flags); in usbatm_atm_close()
877 clear_bit(ATM_VF_PARTIAL, &vcc->flags); in usbatm_atm_close()
878 clear_bit(ATM_VF_ADDR, &vcc->flags); in usbatm_atm_close()
880 mutex_unlock(&instance->serialize); in usbatm_atm_close()
886 struct usbatm_data *instance = atm_dev->dev_data; in usbatm_atm_ioctl()
888 if (!instance || instance->disconnected) in usbatm_atm_ioctl()
889 return -ENODEV; in usbatm_atm_ioctl()
893 return put_user(ATM_LM_NONE, (int __user *)arg) ? -EFAULT : 0; in usbatm_atm_ioctl()
895 return -ENOIOCTLCMD; in usbatm_atm_ioctl()
907 * abort if atm_dev->dev_data is NULL. */ in usbatm_atm_init()
908 atm_dev = atm_dev_register(instance->driver_name, in usbatm_atm_init()
909 &instance->usb_intf->dev, &usbatm_atm_devops, in usbatm_atm_init()
910 -1, NULL); in usbatm_atm_init()
913 return -1; in usbatm_atm_init()
916 instance->atm_dev = atm_dev; in usbatm_atm_init()
918 atm_dev->ci_range.vpi_bits = ATM_CI_MAX; in usbatm_atm_init()
919 atm_dev->ci_range.vci_bits = ATM_CI_MAX; in usbatm_atm_init()
920 atm_dev->signal = ATM_PHY_SIG_UNKNOWN; in usbatm_atm_init()
923 atm_dev->link_rate = 128 * 1000 / 424; in usbatm_atm_init()
925 if (instance->driver->atm_start && ((ret = instance->driver->atm_start(instance, atm_dev)) < 0)) { in usbatm_atm_init()
934 atm_dev->dev_data = instance; in usbatm_atm_init()
938 usbatm_submit_urb(instance->urbs[i]); in usbatm_atm_init()
943 instance->atm_dev = NULL; in usbatm_atm_init()
959 complete(&instance->thread_started); in usbatm_do_heavy_init()
961 ret = instance->driver->heavy_init(instance, instance->usb_intf); in usbatm_do_heavy_init()
966 mutex_lock(&instance->serialize); in usbatm_do_heavy_init()
967 instance->thread = NULL; in usbatm_do_heavy_init()
968 mutex_unlock(&instance->serialize); in usbatm_do_heavy_init()
970 complete_and_exit(&instance->thread_exited, ret); in usbatm_do_heavy_init()
978 instance->driver->driver_name); in usbatm_heavy_init()
985 instance->thread = t; in usbatm_heavy_init()
987 wait_for_completion(&instance->thread_started); in usbatm_heavy_init()
996 tasklet_schedule(&channel->tasklet); in usbatm_tasklet_schedule()
1001 spin_lock_init(&channel->lock); in usbatm_init_channel()
1002 INIT_LIST_HEAD(&channel->list); in usbatm_init_channel()
1003 timer_setup(&channel->delay, usbatm_tasklet_schedule, 0); in usbatm_init_channel()
1009 struct device *dev = &intf->dev; in usbatm_usb_probe()
1013 int error = -ENOMEM; in usbatm_usb_probe()
1020 return -ENOMEM; in usbatm_usb_probe()
1024 instance->driver = driver; in usbatm_usb_probe()
1025 strlcpy(instance->driver_name, driver->driver_name, in usbatm_usb_probe()
1026 sizeof(instance->driver_name)); in usbatm_usb_probe()
1028 instance->usb_dev = usb_dev; in usbatm_usb_probe()
1029 instance->usb_intf = intf; in usbatm_usb_probe()
1031 buf = instance->description; in usbatm_usb_probe()
1032 length = sizeof(instance->description); in usbatm_usb_probe()
1034 if ((i = usb_string(usb_dev, usb_dev->descriptor.iProduct, buf, length)) < 0) in usbatm_usb_probe()
1038 length -= i; in usbatm_usb_probe()
1042 length -= i; in usbatm_usb_probe()
1048 length -= i; in usbatm_usb_probe()
1053 if (driver->bind && (error = driver->bind(instance, intf, id)) < 0) { in usbatm_usb_probe()
1060 kref_init(&instance->refcount); /* dropped in usbatm_usb_disconnect */ in usbatm_usb_probe()
1061 mutex_init(&instance->serialize); in usbatm_usb_probe()
1063 instance->thread = NULL; in usbatm_usb_probe()
1064 init_completion(&instance->thread_started); in usbatm_usb_probe()
1065 init_completion(&instance->thread_exited); in usbatm_usb_probe()
1067 INIT_LIST_HEAD(&instance->vcc_list); in usbatm_usb_probe()
1068 skb_queue_head_init(&instance->sndqueue); in usbatm_usb_probe()
1070 usbatm_init_channel(&instance->rx_channel); in usbatm_usb_probe()
1071 usbatm_init_channel(&instance->tx_channel); in usbatm_usb_probe()
1072 tasklet_init(&instance->rx_channel.tasklet, usbatm_rx_process, (unsigned long)instance); in usbatm_usb_probe()
1073 tasklet_init(&instance->tx_channel.tasklet, usbatm_tx_process, (unsigned long)instance); in usbatm_usb_probe()
1074 instance->rx_channel.stride = ATM_CELL_SIZE + driver->rx_padding; in usbatm_usb_probe()
1075 instance->tx_channel.stride = ATM_CELL_SIZE + driver->tx_padding; in usbatm_usb_probe()
1076 instance->rx_channel.usbatm = instance->tx_channel.usbatm = instance; in usbatm_usb_probe()
1078 if ((instance->flags & UDSL_USE_ISOC) && driver->isoc_in) in usbatm_usb_probe()
1079 instance->rx_channel.endpoint = usb_rcvisocpipe(usb_dev, driver->isoc_in); in usbatm_usb_probe()
1081 instance->rx_channel.endpoint = usb_rcvbulkpipe(usb_dev, driver->bulk_in); in usbatm_usb_probe()
1083 instance->tx_channel.endpoint = usb_sndbulkpipe(usb_dev, driver->bulk_out); in usbatm_usb_probe()
1086 instance->tx_channel.buf_size = max(instance->tx_channel.stride, in usbatm_usb_probe()
1087 snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride)); in usbatm_usb_probe()
1090 maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0); in usbatm_usb_probe()
1094 usb_pipeendpoint(instance->rx_channel.endpoint)); in usbatm_usb_probe()
1095 error = -EINVAL; in usbatm_usb_probe()
1102 num_packets--; in usbatm_usb_probe()
1104 instance->rx_channel.buf_size = num_packets * maxpacket; in usbatm_usb_probe()
1105 instance->rx_channel.packet_size = maxpacket; in usbatm_usb_probe()
1109 &instance->tx_channel : &instance->rx_channel; in usbatm_usb_probe()
1111 dev_dbg(dev, "%s: using %d byte buffer for %s channel 0x%p\n", in usbatm_usb_probe()
1112 __func__, channel->buf_size, i ? "tx" : "rx", channel); in usbatm_usb_probe()
1120 &instance->rx_channel : &instance->tx_channel; in usbatm_usb_probe()
1122 …unsigned int iso_packets = usb_pipeisoc(channel->endpoint) ? channel->buf_size / channel->packet_s… in usbatm_usb_probe()
1126 error = -ENOMEM; in usbatm_usb_probe()
1130 instance->urbs[i] = urb; in usbatm_usb_probe()
1133 buffer = kzalloc(channel->buf_size, GFP_KERNEL); in usbatm_usb_probe()
1135 error = -ENOMEM; in usbatm_usb_probe()
1139 usb_fill_bulk_urb(urb, instance->usb_dev, channel->endpoint, in usbatm_usb_probe()
1140 buffer, channel->buf_size, usbatm_complete, channel); in usbatm_usb_probe()
1143 urb->interval = 1; in usbatm_usb_probe()
1144 urb->transfer_flags = URB_ISO_ASAP; in usbatm_usb_probe()
1145 urb->number_of_packets = iso_packets; in usbatm_usb_probe()
1147 urb->iso_frame_desc[j].offset = channel->packet_size * j; in usbatm_usb_probe()
1148 urb->iso_frame_desc[j].length = channel->packet_size; in usbatm_usb_probe()
1154 list_add_tail(&urb->urb_list, &channel->list); in usbatm_usb_probe()
1156 vdbg(&intf->dev, "%s: alloced buffer 0x%p buf size %u urb 0x%p", in usbatm_usb_probe()
1157 __func__, urb->transfer_buffer, urb->transfer_buffer_length, urb); in usbatm_usb_probe()
1160 instance->cached_vpi = ATM_VPI_UNSPEC; in usbatm_usb_probe()
1161 instance->cached_vci = ATM_VCI_UNSPEC; in usbatm_usb_probe()
1162 instance->cell_buf = kmalloc(instance->rx_channel.stride, GFP_KERNEL); in usbatm_usb_probe()
1164 if (!instance->cell_buf) { in usbatm_usb_probe()
1165 error = -ENOMEM; in usbatm_usb_probe()
1169 if (!(instance->flags & UDSL_SKIP_HEAVY_INIT) && driver->heavy_init) { in usbatm_usb_probe()
1172 complete(&instance->thread_exited); /* pretend that heavy_init was run */ in usbatm_usb_probe()
1185 if (instance->driver->unbind) in usbatm_usb_probe()
1186 instance->driver->unbind(instance, intf); in usbatm_usb_probe()
1188 kfree(instance->cell_buf); in usbatm_usb_probe()
1191 if (instance->urbs[i]) in usbatm_usb_probe()
1192 kfree(instance->urbs[i]->transfer_buffer); in usbatm_usb_probe()
1193 usb_free_urb(instance->urbs[i]); in usbatm_usb_probe()
1204 struct device *dev = &intf->dev; in usbatm_usb_disconnect()
1216 mutex_lock(&instance->serialize); in usbatm_usb_disconnect()
1217 instance->disconnected = 1; in usbatm_usb_disconnect()
1218 if (instance->thread != NULL) in usbatm_usb_disconnect()
1219 send_sig(SIGTERM, instance->thread, 1); in usbatm_usb_disconnect()
1220 mutex_unlock(&instance->serialize); in usbatm_usb_disconnect()
1222 wait_for_completion(&instance->thread_exited); in usbatm_usb_disconnect()
1224 mutex_lock(&instance->serialize); in usbatm_usb_disconnect()
1225 list_for_each_entry(vcc_data, &instance->vcc_list, list) in usbatm_usb_disconnect()
1226 vcc_release_async(vcc_data->vcc, -EPIPE); in usbatm_usb_disconnect()
1227 mutex_unlock(&instance->serialize); in usbatm_usb_disconnect()
1229 tasklet_disable(&instance->rx_channel.tasklet); in usbatm_usb_disconnect()
1230 tasklet_disable(&instance->tx_channel.tasklet); in usbatm_usb_disconnect()
1233 usb_kill_urb(instance->urbs[i]); in usbatm_usb_disconnect()
1235 del_timer_sync(&instance->rx_channel.delay); in usbatm_usb_disconnect()
1236 del_timer_sync(&instance->tx_channel.delay); in usbatm_usb_disconnect()
1238 /* turn usbatm_[rt]x_process into something close to a no-op */ in usbatm_usb_disconnect()
1240 INIT_LIST_HEAD(&instance->rx_channel.list); in usbatm_usb_disconnect()
1241 INIT_LIST_HEAD(&instance->tx_channel.list); in usbatm_usb_disconnect()
1243 tasklet_enable(&instance->rx_channel.tasklet); in usbatm_usb_disconnect()
1244 tasklet_enable(&instance->tx_channel.tasklet); in usbatm_usb_disconnect()
1246 if (instance->atm_dev && instance->driver->atm_stop) in usbatm_usb_disconnect()
1247 instance->driver->atm_stop(instance, instance->atm_dev); in usbatm_usb_disconnect()
1249 if (instance->driver->unbind) in usbatm_usb_disconnect()
1250 instance->driver->unbind(instance, intf); in usbatm_usb_disconnect()
1252 instance->driver_data = NULL; in usbatm_usb_disconnect()
1255 kfree(instance->urbs[i]->transfer_buffer); in usbatm_usb_disconnect()
1256 usb_free_urb(instance->urbs[i]); in usbatm_usb_disconnect()
1259 kfree(instance->cell_buf); in usbatm_usb_disconnect()
1262 if (instance->atm_dev) { in usbatm_usb_disconnect()
1263 atm_dev_deregister(instance->atm_dev); in usbatm_usb_disconnect()
1264 instance->atm_dev = NULL; in usbatm_usb_disconnect()
1280 return -EIO; in usbatm_usb_init()
1289 return -EINVAL; in usbatm_usb_init()
1320 dev_dbg(&instance->usb_intf->dev, "%s", buffer); in usbatm_print_packet()