1 /*-------------------------------------------------------------------------*/
2 /*-------------------------------------------------------------------------*
3 * simple generic USB HCD frontend Version 0.9.5 (10/28/2001)
4 * for embedded HCs (SL811HS)
6 * USB URB handling, hci_ hcs_
8 * Transfer scheduling, sh_
11 *-------------------------------------------------------------------------*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *-------------------------------------------------------------------------*/
28 /* main lock for urb access */
29 static spinlock_t usb_urb_lock = SPIN_LOCK_UNLOCKED;
31 /*-------------------------------------------------------------------------*/
32 /*-------------------------------------------------------------------------*/
33 /* URB HCD API function layer
36 /***************************************************************************
37 * Function Name : hcs_urb_queue
39 * This function initializes the urb status and length before queueing the
42 * Input: hci = data structure for the host controller
43 * urb = USB request block data structure
46 **************************************************************************/
47 static inline int hcs_urb_queue (hci_t * hci, struct urb * urb)
51 DBGFUNC ("enter hcs_urb_queue\n");
52 if (usb_pipeisoc (urb->pipe)) {
53 DBGVERBOSE ("hcs_urb_queue: isoc pipe\n");
54 for (i = 0; i < urb->number_of_packets; i++) {
55 urb->iso_frame_desc[i].actual_length = 0;
56 urb->iso_frame_desc[i].status = -EXDEV;
59 /* urb->next hack : 1 .. resub, 0 .. single shot */
60 /* urb->interval = urb->next ? 1 : 0; */
63 urb->status = -EINPROGRESS;
64 urb->actual_length = 0;
67 if (usb_pipecontrol (urb->pipe))
68 hc_flush_data_cache (hci, urb->setup_packet, 8);
69 if (usb_pipeout (urb->pipe))
70 hc_flush_data_cache (hci, urb->transfer_buffer,
71 urb->transfer_buffer_length);
73 qu_queue_urb (hci, urb);
78 /***************************************************************************
79 * Function Name : hcs_return_urb
81 * This function the return path of URB back to the USB core. It calls the
82 * the urb complete function if exist, and also handles the resubmition of
85 * Input: hci = data structure for the host controller
86 * urb = USB request block data structure
87 * resub_ok = resubmit flag: 1 = submit urb again, 0 = not submit
90 **************************************************************************/
91 static int hcs_return_urb (hci_t * hci, struct urb * urb, int resub_ok)
93 struct usb_device *dev = urb->dev;
96 DBGFUNC ("enter hcs_return_urb, urb pointer = 0x%x, "
97 "transferbuffer point = 0x%x, "
98 " setup packet pointer = 0x%x, context pointer = 0x%x \n",
99 (__u32 *) urb, (__u32 *) urb->transfer_buffer,
100 (__u32 *) urb->setup_packet, (__u32 *) urb->context);
102 urb_print (urb, "RET", usb_pipeout (urb->pipe));
104 resubmit = urb->interval && resub_ok;
106 urb->dev = urb->hcpriv = NULL;
109 urb->complete (urb, NULL); /* call complete */
113 /* requeue the URB */
115 hcs_urb_queue (hci, urb);
123 /***************************************************************************
124 * Function Name : hci_submit_urb
126 * This function is called by the USB core API when an URB is available to
127 * process. This function does the following
129 * 1) Check the validity of the URB
130 * 2) Parse the device number from the URB
131 * 3) Pass the URB to the root hub routine if its intended for the hub, else
132 * queue the urb for the attached device.
134 * Input: urb = USB request block data structure
136 * Return: 0 if success or error code
137 **************************************************************************/
138 static int hci_submit_urb (struct urb * urb, int mem_flags)
141 unsigned int pipe = urb->pipe;
145 DBGFUNC ("enter hci_submit_urb, pipe = 0x%x\n", urb->pipe);
146 if (!urb->dev || !urb->dev->bus || urb->hcpriv)
149 hci = (hci_t *) urb->dev->bus->hcpriv;
151 /* a request to the virtual root hub */
152 if (usb_pipedevice (pipe) == hci->rh.devnum) {
154 urb_print (urb, "SUB-RH", usb_pipein (pipe));
156 return rh_submit_urb (urb);
159 /* increment urb's reference count, we now control it. */
160 urb = usb_get_urb (urb);
162 /* queue the URB to its endpoint-queue */
163 spin_lock_irqsave (&usb_urb_lock, flags);
164 ret = hcs_urb_queue (hci, urb);
166 /* error on return */
167 DBGERR ("hci_submit_urb: return err, ret = 0x%x, urb->status = 0x%x\n",
172 spin_unlock_irqrestore (&usb_urb_lock, flags);
178 /***************************************************************************
179 * Function Name : hci_unlink_urb
181 * This function mark the URB to unlink
183 * Input: urb = USB request block data structure
185 * Return: 0 if success or error code
186 **************************************************************************/
187 static int hci_unlink_urb (struct urb * urb, int status)
191 DECLARE_WAITQUEUE (wait, current);
194 DBGFUNC ("enter hci_unlink_urb\n");
196 if (!urb) /* just to be sure */
199 if (!urb->dev || !urb->dev->bus)
202 hci = (hci_t *) urb->dev->bus->hcpriv;
204 /* a request to the virtual root hub */
205 if (usb_pipedevice (urb->pipe) == hci->rh.devnum) {
206 return rh_unlink_urb (urb);
210 urb_print (urb, "UNLINK", 1);
212 spin_lock_irqsave (&usb_urb_lock, flags);
214 if (!list_empty (&urb->urb_list) && urb->status == -EINPROGRESS) {
217 /* asynchronous with callback */
218 /* relink the urb to the del list */
219 list_move (&urb->urb_list, &hci->del_list);
220 urb->status = status;
221 spin_unlock_irqrestore (&usb_urb_lock, flags);
223 /* hcd does not own URB but we keep the driver happy anyway */
224 spin_unlock_irqrestore (&usb_urb_lock, flags);
227 urb->status = status;
228 urb->actual_length = 0;
229 urb->complete (urb, NULL);
231 wake_up (&usb_kill_urb_queue);
238 /***************************************************************************
239 * Function Name : hci_alloc_dev
241 * This function allocates private data space for the usb device and
242 * initialize the endpoint descriptor heads.
244 * Input: usb_dev = pointer to the usb device
246 * Return: 0 if success or error code
247 **************************************************************************/
248 static int hci_alloc_dev (struct usb_device *usb_dev)
250 struct hci_device *dev;
253 DBGFUNC ("enter hci_alloc_dev\n");
254 dev = kmalloc (sizeof (*dev), GFP_KERNEL);
258 memset (dev, 0, sizeof (*dev));
260 for (i = 0; i < 32; i++) {
261 INIT_LIST_HEAD (&(dev->ed[i].urb_queue));
262 dev->ed[i].pipe_head = NULL;
265 usb_dev->hcpriv = dev;
267 DBGVERBOSE ("USB HC dev alloc %d bytes\n", sizeof (*dev));
273 /***************************************************************************
274 * Function Name : hci_free_dev
276 * This function de-allocates private data space for the usb devic
278 * Input: usb_dev = pointer to the usb device
281 **************************************************************************/
282 static int hci_free_dev (struct usb_device *usb_dev)
284 DBGFUNC ("enter hci_free_dev\n");
287 kfree (usb_dev->hcpriv);
289 usb_dev->hcpriv = NULL;
294 /***************************************************************************
295 * Function Name : hci_get_current_frame_number
297 * This function get the current USB frame number
299 * Input: usb_dev = pointer to the usb device
301 * Return: frame number
302 **************************************************************************/
303 static int hci_get_current_frame_number (struct usb_device *usb_dev)
305 hci_t *hci = usb_dev->bus->hcpriv;
306 DBGFUNC ("enter hci_get_current_frame_number, frame = 0x%x \r\n",
309 return (hci->frame_number);
312 /***************************************************************************
313 * List of all io-functions
314 **************************************************************************/
316 static struct usb_operations hci_device_operations = {
317 .allocate = hci_alloc_dev,
318 .deallocate = hci_free_dev,
319 .get_frame_number = hci_get_current_frame_number,
320 .submit_urb = hci_submit_urb,
321 .unlink_urb = hci_unlink_urb,
324 /***************************************************************************
327 * For each type of transfer (INTR, BULK, ISO, CTRL) there is a list of
329 * (hci->intr_list, hci->bulk_list, hci->iso_list, hci->ctrl_list)
330 * For every endpoint the head URB of the queued URBs is linked to one of
333 * The rest of the queued URBs of an endpoint are linked into a
334 * private URB list for each endpoint. (hci_dev->ed [endpoint_io].urb_queue)
335 * hci_dev->ed [endpoint_io].pipe_head .. points to the head URB which is
336 * in one of the active URB lists.
338 * The index of an endpoint consists of its number and its direction.
340 * The state of an intr and iso URB is 0.
341 * For ctrl URBs the states are US_CTRL_SETUP, US_CTRL_DATA, US_CTRL_ACK
342 * Bulk URBs states are US_BULK and US_BULK0 (with 0-len packet)
344 **************************************************************************/
346 /***************************************************************************
347 * Function Name : qu_urb_timeout
349 * This function is called when the URB timeout. The function unlinks the
355 **************************************************************************/
356 #ifdef HC_URB_TIMEOUT
357 static void qu_urb_timeout (unsigned long lurb)
359 struct urb *urb = (struct urb *) lurb;
361 DBGFUNC ("enter qu_urb_timeout\n");
362 hci_unlink_urb (urb);
366 /***************************************************************************
367 * Function Name : qu_pipeindex
369 * This function gets the index of the pipe.
371 * Input: pipe: the urb pipe
374 **************************************************************************/
375 static inline int qu_pipeindex (__u32 pipe)
377 DBGFUNC ("enter qu_pipeindex\n");
378 return (usb_pipeendpoint (pipe) << 1) | (usb_pipecontrol (pipe) ? 0 : usb_pipeout (pipe));
381 /***************************************************************************
382 * Function Name : qu_seturbstate
384 * This function set the state of the URB.
386 * control pipe: 3 states -- Setup, data, status
387 * interrupt and bulk pipe: 1 state -- data
389 * Input: urb = USB request block data structure
390 * state = the urb state
393 **************************************************************************/
394 static inline void qu_seturbstate (struct urb * urb, int state)
396 DBGFUNC ("enter qu_seturbstate\n");
398 urb->pipe |= state & 0x1f;
401 /***************************************************************************
402 * Function Name : qu_urbstate
404 * This function get the current state of the URB.
406 * Input: urb = USB request block data structure
409 **************************************************************************/
410 static inline int qu_urbstate (struct urb * urb)
413 DBGFUNC ("enter qu_urbstate\n");
415 return urb->pipe & 0x1f;
418 /***************************************************************************
419 * Function Name : qu_queue_active_urb
421 * This function adds the urb to the appropriate active urb list and set
424 * There are four active lists: isochoronous list, interrupt list,
425 * control list, and bulk list.
427 * Input: hci = data structure for the host controller
428 * urb = USB request block data structure
429 * ed = endpoint descriptor
432 **************************************************************************/
433 static inline void qu_queue_active_urb (hci_t * hci, struct urb * urb, epd_t * ed)
436 DBGFUNC ("enter qu_queue_active_urb\n");
437 switch (usb_pipetype (urb->pipe)) {
439 list_add (&urb->urb_list, &hci->ctrl_list);
440 urb_state = US_CTRL_SETUP;
444 list_add (&urb->urb_list, &hci->bulk_list);
445 if ((urb->transfer_flags & URB_ZERO_PACKET)
446 && urb->transfer_buffer_length > 0
448 ((urb->transfer_buffer_length %
449 usb_maxpacket (urb->dev, urb->pipe,
450 usb_pipeout (urb->pipe))) == 0)) {
451 urb_state = US_BULK0;
456 urb->start_frame = hci->frame_number;
457 list_add (&urb->urb_list, &hci->intr_list);
460 case PIPE_ISOCHRONOUS:
461 list_add (&urb->urb_list, &hci->iso_list);
465 #ifdef HC_URB_TIMEOUT
467 ed->timeout.data = (unsigned long) urb;
468 ed->timeout.expires = urb->timeout + jiffies;
469 ed->timeout.function = qu_urb_timeout;
470 add_timer (&ed->timeout);
474 qu_seturbstate (urb, urb_state);
477 /***************************************************************************
478 * Function Name : qu_queue_urb
480 * This function adds the urb to the endpoint descriptor list
482 * Input: hci = data structure for the host controller
483 * urb = USB request block data structure
486 **************************************************************************/
487 static int qu_queue_urb (hci_t * hci, struct urb * urb)
489 struct hci_device *hci_dev = usb_to_hci (urb->dev);
490 epd_t *ed = &hci_dev->ed[qu_pipeindex (urb->pipe)];
492 DBGFUNC ("Enter qu_queue_urb\n");
494 /* for ISOC transfers calculate start frame index */
496 if (usb_pipeisoc (urb->pipe) && urb->transfer_flags & URB_ISO_ASAP) {
497 urb->start_frame = ((ed->pipe_head) ? (ed->last_iso + 1) : hci_get_current_frame_number (urb-> dev) + 1) & 0xffff;
501 __list_add (&urb->urb_list, ed->urb_queue.prev,
505 qu_queue_active_urb (hci, urb, ed);
506 if (++hci->active_urbs == 1)
513 /***************************************************************************
514 * Function Name : qu_next_urb
516 * This function removes the URB from the queue and add the next URB to
519 * Input: hci = data structure for the host controller
520 * urb = USB request block data structure
521 * resub_ok = resubmit flag
523 * Return: pointer to the next urb
524 **************************************************************************/
525 static struct urb *qu_next_urb (hci_t * hci, struct urb * urb, int resub_ok)
527 struct hci_device *hci_dev = usb_to_hci (urb->dev);
528 epd_t *ed = &hci_dev->ed[qu_pipeindex (urb->pipe)];
530 DBGFUNC ("enter qu_next_urb\n");
531 list_del_init(&urb->urb_list);
533 if (ed->pipe_head == urb) {
534 #ifdef HC_URB_TIMEOUT
536 del_timer (&ed->timeout);
539 if (!--hci->active_urbs)
542 if (!list_empty (&ed->urb_queue)) {
543 urb = list_entry (ed->urb_queue.next, struct urb, urb_list);
544 list_del_init (&urb->urb_list);
546 qu_queue_active_urb (hci, urb, ed);
548 ed->pipe_head = NULL;
555 /***************************************************************************
556 * Function Name : qu_return_urb
558 * This function is part of the return path.
560 * Input: hci = data structure for the host controller
561 * urb = USB request block data structure
562 * resub_ok = resubmit flag
564 * Return: pointer to the next urb
565 **************************************************************************/
566 static struct urb *qu_return_urb (hci_t * hci, struct urb * urb, int resub_ok)
568 struct urb *next_urb;
570 DBGFUNC ("enter qu_return_rub\n");
571 next_urb = qu_next_urb (hci, urb, resub_ok);
572 hcs_return_urb (hci, urb, resub_ok);
576 /***************************************************************************
577 * Function Name : sh_scan_iso_urb_list
579 * This function goes through the isochronous urb list and schedule the
582 * Note: This function has not tested yet
584 * Input: hci = data structure for the host controller
585 * list_lh = pointer to the isochronous list
586 * frame_number = the frame number
588 * Return: 0 = unsuccessful; 1 = successful
589 **************************************************************************/
590 static int sh_scan_iso_urb_list (hci_t * hci, struct list_head *list_lh,
593 struct list_head *lh = list_lh->next;
596 DBGFUNC ("enter sh_scan_iso_urb_list\n");
597 hci->td_array->len = 0;
599 while (lh != list_lh) {
600 urb = list_entry (lh, struct urb, urb_list);
602 if (((frame_number - urb->start_frame) & 0x7ff) <
603 urb->number_of_packets) {
604 if (!sh_add_packet (hci, urb)) {
608 urb->start_frame) & 0x7ff) > 0x400) {
609 if (qu_urbstate (urb) > 0)
610 urb = qu_return_urb (hci, urb, 1);
612 urb = qu_next_urb (hci, urb, 1);
614 if (lh == list_lh && urb)
623 /***************************************************************************
624 * Function Name : sh_scan_urb_list
626 * This function goes through the urb list and schedule the
629 * Input: hci = data structure for the host controller
630 * list_lh = pointer to the isochronous list
632 * Return: 0 = unsuccessful; 1 = successful
633 **************************************************************************/
634 static int sh_scan_urb_list (hci_t * hci, struct list_head *list_lh)
636 struct list_head *lh = NULL;
639 if (list_lh == NULL) {
640 DBGERR ("sh_scan_urb_list: error, list_lh == NULL\n");
643 DBGFUNC ("enter sh_scan_urb_list: frame# \n");
645 list_for_each (lh, list_lh) {
646 urb = list_entry (lh, struct urb, urb_list);
649 if (!usb_pipeint (urb->pipe)
650 || (((hci->frame_number - urb->start_frame)
651 & 0x7ff) >= urb->interval)) {
652 DBGVERBOSE ("sh_scan_urb_list !INT: %d fr_no: %d int: %d pint: %d\n",
653 urb->start_frame, hci->frame_number, urb->interval,
654 usb_pipeint (urb->pipe));
655 if (!sh_add_packet (hci, urb)) {
658 DBGVERBOSE ("INT: start: %d fr_no: %d int: %d pint: %d\n",
659 urb->start_frame, hci->frame_number,
660 urb->interval, usb_pipeint (urb->pipe));
661 urb->start_frame = hci->frame_number;
670 /***************************************************************************
671 * Function Name : sh_shedule_trans
673 * This function schedule the USB transaction.
674 * This function will process the endpoint in the following order:
675 * interrupt, control, and bulk.
677 * Input: hci = data structure for the host controller
678 * isSOF = flag indicate if Start Of Frame has occurred
681 **************************************************************************/
682 static int sh_schedule_trans (hci_t * hci, int isSOF)
685 struct list_head *lh;
688 DBGERR ("sh_schedule_trans: hci == NULL\n");
691 if (hci->td_array == NULL) {
692 DBGERR ("sh_schedule_trans: hci->td_array == NULL\n");
696 if (hci->td_array->len != 0) {
697 DBGERR ("ERROR: schedule, hci->td_array->len = 0x%x, s/b: 0\n",
701 /* schedule the next available interrupt transfer or the next
702 * stage of the interrupt transfer */
704 if (hci->td_array->len == 0 && !list_empty (&hci->intr_list)) {
705 units_left = sh_scan_urb_list (hci, &hci->intr_list);
708 /* schedule the next available control transfer or the next
709 * stage of the control transfer */
711 if (hci->td_array->len == 0 && !list_empty (&hci->ctrl_list) && units_left > 0) {
712 units_left = sh_scan_urb_list (hci, &hci->ctrl_list);
715 /* schedule the next available bulk transfer or the next
716 * stage of the bulk transfer */
718 if (hci->td_array->len == 0 && !list_empty (&hci->bulk_list) && units_left > 0) {
719 sh_scan_urb_list (hci, &hci->bulk_list);
721 /* be fair to each BULK URB (move list head around)
722 * only when the new SOF happens */
724 lh = hci->bulk_list.next;
725 list_move (&hci->bulk_list, lh);
730 /***************************************************************************
731 * Function Name : sh_add_packet
733 * This function forms the packet and transmit the packet. This function
734 * will handle all endpoint type: isochoronus, interrupt, control, and
737 * Input: hci = data structure for the host controller
738 * urb = USB request block data structure
740 * Return: 0 = unsucessful; 1 = successful
741 **************************************************************************/
742 static int sh_add_packet (hci_t * hci, struct urb * urb)
747 int maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe));
748 int endpoint = usb_pipeendpoint (urb->pipe);
749 int address = usb_pipedevice (urb->pipe);
750 int slow = (((urb->pipe) >> 26) & 1);
751 int out = usb_pipeout (urb->pipe);
757 DBGFUNC ("enter sh_add_packet\n");
761 /* calculate len, toggle bit and add the transaction */
762 switch (usb_pipetype (urb->pipe)) {
763 case PIPE_ISOCHRONOUS:
764 pid = out ? PID_OUT : PID_IN;
766 i = hci->frame_number - urb->start_frame;
767 data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
768 len = urb->iso_frame_desc[i].length;
771 case PIPE_BULK: /* BULK and BULK0 */
773 pid = out ? PID_OUT : PID_IN;
774 len = urb->transfer_buffer_length - urb->actual_length;
775 data = urb->transfer_buffer + urb->actual_length;
776 toggle = usb_gettoggle (urb->dev, endpoint, out);
780 switch (qu_urbstate (urb)) {
784 data = urb->setup_packet;
789 if (!hci->last_packet_nak) {
790 /* The last packet received is not a nak:
791 * reset the nak count
796 if (urb->transfer_buffer_length != 0) {
797 pid = out ? PID_OUT : PID_IN;
798 len = urb->transfer_buffer_length - urb->actual_length;
799 data = urb->transfer_buffer + urb->actual_length;
800 toggle = (urb->actual_length & maxps) ? 0 : 1;
801 usb_settoggle (urb->dev,
802 usb_pipeendpoint (urb->pipe),
803 usb_pipeout (urb->pipe), toggle);
806 /* correct state and fall through */
807 qu_seturbstate (urb, US_CTRL_ACK);
813 /* reply in opposite direction */
814 pid = !out ? PID_OUT : PID_IN;
816 usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe),
817 usb_pipeout (urb->pipe), toggle);
823 hc_add_trans (hci, len, data, toggle, maxps, slow, endpoint,
824 address, pid, iso, qu_urbstate (urb));
826 DBGVERBOSE ("transfer_pa: addr:%d ep:%d pid:%x tog:%x iso:%x sl:%x "
827 "max:%d\n len:%d ret:%d data:%p left:%d\n",
828 address, endpoint, pid, toggle, iso, slow,
829 maxps, len, ret, data, hci->hp.units_left);
832 hci->td_array->td[hci->td_array->len].urb = urb;
833 hci->td_array->td[hci->td_array->len].len = ret;
834 hci->td_array->td[hci->td_array->len].iso_index = i;
835 hci->td_array->len++;
836 hci->active_trans = 1;
842 /***************************************************************************
843 * Function Name : cc_to_error
845 * This function maps the SL811HS hardware error code to the linux USB error
848 * Input: cc = hardware error code
850 * Return: USB error code
851 **************************************************************************/
852 static int cc_to_error (int cc)
855 if (cc & SL11H_STATMASK_ERROR) {
857 } else if (cc & SL11H_STATMASK_OVF) {
858 errCode |= -EOVERFLOW;
859 } else if (cc & SL11H_STATMASK_STALL) {
865 /***************************************************************************
866 * Function Name : sh_done_list
868 * This function process the packet when it has done finish transfer.
870 * 1) It handles hardware error
871 * 2) It updates the URB state
872 * 3) If the USB transaction is complete, it start the return stack path.
874 * Input: hci = data structure for the host controller
875 * isExcessNak = flag tells if there excess NAK condition occurred
877 * Return: urb_state or -1 if the transaction has complete
878 **************************************************************************/
879 static int sh_done_list (hci_t * hci, int *isExcessNak)
889 int ret = 1; /* -1 parse abbort, 1 parse ok, 0 last element */
899 DBGFUNC ("enter sh_done_list: td_array->len = 0x%x\n",
902 debugLen = hci->td_array->len;
904 DBGERR ("sh_done_list: td_array->len = 0x%x > 1\n",
907 for (trans = 0; ret && trans < hci->td_array->len && trans < MAX_TRANS;
909 urb = hci->td_array->td[trans].urb;
910 len = hci->td_array->td[trans].len;
911 out = usb_pipeout (urb->pipe);
913 if (usb_pipeisoc (urb->pipe)) {
914 iso_index = hci->td_array->td[trans].iso_index;
915 data = urb->transfer_buffer + urb->iso_frame_desc[iso_index].offset;
918 data = urb->transfer_buffer + urb->actual_length;
919 toggle = usb_gettoggle (urb->dev,
920 usb_pipeendpoint (urb->pipe),
921 usb_pipeout (urb->pipe));
924 urb_state = qu_urbstate (urb);
925 pid = out ? PID_OUT : PID_IN;
926 ret = hc_parse_trans (hci, &actbytes, data, &cc, &toggle, len,
928 maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe));
933 active = (urb_state != US_CTRL_SETUP) && (actbytes && !(actbytes & (maxps - 1)));
935 /* If the transfer is not bulk in, then it is necessary to get all
936 * data specify by the urb->transfer_len.
939 if (!(usb_pipebulk (urb->pipe) && usb_pipein (urb->pipe)))
940 active = active && (urb->transfer_buffer_length != urb->actual_length + actbytes);
942 if (urb->transfer_buffer_length == urb->actual_length + actbytes)
946 (SL11H_STATMASK_ERROR | SL11H_STATMASK_TMOUT |
947 SL11H_STATMASK_OVF | SL11H_STATMASK_STALL))
948 && !(cc & SL11H_STATMASK_NAK)) {
949 if (++urb->error_count > 3) {
950 DBGERR ("done_list: excessive error: errcount = 0x%x, cc = 0x%x\n",
951 urb->error_count, cc);
955 DBGERR ("done_list: packet err, cc = 0x%x, "
956 " urb->length = 0x%x, actual_len = 0x%x,"
957 " urb_state =0x%x\n",
958 cc, urb->transfer_buffer_length,
959 urb->actual_length, urb_state);
960 // if (cc & SL11H_STATMASK_STALL) {
961 /* The USB function is STALLED on a control pipe (0),
962 * then it needs to send the SETUP command again to
963 * clear the STALL condition
966 // if (usb_pipeendpoint (urb->pipe) == 0) {
974 if (cc & SL11H_STATMASK_NAK) {
975 if (hci->nakCnt < 0x10000) {
977 hci->last_packet_nak = 1;
981 DBGERR ("done_list: nak count exceed limit\n");
988 hci->last_packet_nak = 0;
991 if (urb_state != US_CTRL_SETUP) {
993 urb->actual_length += actbytes;
994 usb_settoggle (urb->dev,
995 usb_pipeendpoint (urb->pipe),
996 usb_pipeout (urb->pipe), toggle);
998 if (usb_pipeisoc (urb->pipe)) {
999 urb->iso_frame_desc[iso_index].actual_length = actbytes;
1000 urb->iso_frame_desc[iso_index].status = cc_to_error (cc);
1001 active = (iso_index < urb->number_of_packets);
1006 urb->status = cc_to_error (cc);
1008 DBGERR ("error on received packet: urb->status = 0x%x\n",
1011 hci->td_array->len = 0;
1012 qu_return_urb (hci, urb, 1);
1015 /* We do not want to decrement the urb_state if exceeded nak,
1016 * because we need to finish the data stage of the control
1020 if (!(*isExcessNak))
1022 qu_seturbstate (urb, urb_state);
1028 DBGERR ("ERROR: done_list, urb_state = %d, suppose > 0\n",
1030 if (debugLen != hci->td_array->len) {
1031 DBGERR ("ERROR: done_list, debugLen!= td_array->len,"
1032 "debugLen = 0x%x, hci->td_array->len = 0x%x\n",
1033 debugLen, hci->td_array->len);
1036 hci->td_array->len = 0;