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/linux/Documentation/driver-api/usb/
H A Danchors.rst9 driver has to keep track of the URBs it has submitted
12 keeping track of URBs and provides methods to deal with
13 multiple URBs.
25 Once it has no more URBs associated with it, the anchor can be
28 Association and disassociation of URBs with anchors
31 An association of URBs to an anchor is made by an explicit
35 all URBs associated with an anchor.
38 Operations on multitudes of URBs
44 This function kills all URBs associated with an anchor. The URBs
51 All URBs of an anchor are unanchored en masse.
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H A Ddma.rst21 - URBs have an additional "transfer_dma" field, as well as a transfer_flags
27 don't manage dma mappings for URBs.
98 into URBs::
109 to submit URBs in PIO way as long as the page in scatterlists is not in the
H A Dcallbacks.rst8 structure and through the completion handler of URBs a driver submits.
106 If you are called due to a physical disconnection, all your URBs will be
123 outstanding URBs to complete, and save any device state you need to
124 restore. No more URBs may be submitted until the post_reset method
/linux/sound/usb/caiaq/
H A Daudio.c676 struct urb **urbs; in write_completed()
684 urbs = kmalloc_array(N_URBS, sizeof(*urbs), GFP_KERNEL); in write_completed()
685 if (!urbs) {
691 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL); in alloc_urbs()
692 if (!urbs[i]) { in alloc_urbs()
694 return urbs; in alloc_urbs()
697 urbs[i]->transfer_buffer = in alloc_urbs()
700 if (!urbs[i]->transfer_buffer) { in alloc_urbs()
702 return urbs; in alloc_urbs()
689 struct urb **urbs; alloc_urbs() local
741 free_urbs(struct urb ** urbs) free_urbs() argument
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/linux/drivers/net/can/usb/
H A Ducan.c261 /* Context Information for transmission URBs */
862 static void ucan_cleanup_rx_urbs(struct ucan_priv *up, struct urb **urbs) in ucan_cleanup_rx_urbs() argument
867 if (urbs[i]) { in ucan_cleanup_rx_urbs()
868 usb_unanchor_urb(urbs[i]); in ucan_cleanup_rx_urbs()
871 urbs[i]->transfer_buffer, in ucan_cleanup_rx_urbs()
872 urbs[i]->transfer_dma); in ucan_cleanup_rx_urbs()
873 usb_free_urb(urbs[i]); in ucan_cleanup_rx_urbs()
877 memset(urbs, 0, sizeof(*urbs) * UCAN_MAX_RX_URBS); in ucan_cleanup_rx_urbs()
881 struct urb **urbs) in ucan_prepare_and_anchor_rx_urbs() argument
885 memset(urbs, 0, sizeof(*urbs) * UCAN_MAX_RX_URBS); in ucan_prepare_and_anchor_rx_urbs()
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/linux/drivers/net/wireless/purelifi/plfxlc/
H A Dusb.c203 struct urb **urbs; in __lf_x_usb_enable_rx() local
207 urbs = kcalloc(RX_URBS_COUNT, sizeof(struct urb *), GFP_KERNEL); in __lf_x_usb_enable_rx()
208 if (!urbs) in __lf_x_usb_enable_rx()
212 urbs[i] = alloc_rx_urb(usb); in __lf_x_usb_enable_rx()
213 if (!urbs[i]) in __lf_x_usb_enable_rx()
221 if (rx->urbs) { in __lf_x_usb_enable_rx()
226 rx->urbs = urbs; in __lf_x_usb_enable_rx()
231 r = usb_submit_urb(urbs[i], GFP_KERNEL); in __lf_x_usb_enable_rx()
240 usb_kill_urb(urbs[i]); in __lf_x_usb_enable_rx()
242 rx->urbs = NULL; in __lf_x_usb_enable_rx()
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/linux/sound/usb/line6/
H A Dpcm.c96 Unlink all currently active URBs.
106 usb_unlink_urb(pcms->urbs[i]); in line6_unlink_audio_urbs()
112 Wait until unlinking of all currently active URBs has been finished.
134 "timeout: still %d active urbs..\n", alive); in line6_wait_clear_audio_urbs()
192 /* Submit all currently available URBs */ in line6_stream_start()
204 /* stop a PCM stream; this doesn't sync with the unlinked URBs */ in line6_stream_start()
454 if (pcms->urbs == NULL) in cleanup_urbs()
458 if (pcms->urbs[i]) { in cleanup_urbs()
459 usb_kill_urb(pcms->urbs[i]); in cleanup_urbs()
460 usb_free_urb(pcms->urbs[ in cleanup_urbs()
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H A Dcapture.c36 urb_in = line6pcm->in.urbs[index]; in submit_audio_in_urb()
65 Submit all currently available capture URBs.
154 if (urb == line6pcm->in.urbs[index]) in audio_in_callback()
258 line6pcm->in.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), in line6_create_audio_in_urbs()
260 if (line6pcm->in.urbs == NULL) in line6_create_audio_in_urbs()
263 /* create audio URBs and fill in constant values: */ in line6_create_audio_in_urbs()
268 urb = line6pcm->in.urbs[i] = in line6_create_audio_in_urbs()
H A Dpcm.h88 /* allocated URBs */
89 struct urb **urbs; member
117 /* Bit mask of active URBs */
120 /* Bit mask of URBs currently being unlinked */
H A Dplayback.c163 urb_out = line6pcm->out.urbs[index]; in submit_audio_out_urb()
283 Submit all currently available playback URBs.
321 if (urb == line6pcm->out.urbs[index]) in audio_out_callback()
407 line6pcm->out.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), in line6_create_audio_out_urbs()
409 if (line6pcm->out.urbs == NULL) in line6_create_audio_out_urbs()
412 /* create audio URBs and fill in constant values: */ in line6_create_audio_out_urbs()
417 urb = line6pcm->out.urbs[i] = in line6_create_audio_out_urbs()
/linux/drivers/media/usb/gspca/
H A Dbenq.c77 /* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */ in sd_start()
79 #error "Not enough URBs in the gspca table" in sd_start()
164 /* scan both received URBs */ in sd_isoc_irq()
191 * The images are received in URBs of different endpoints in sd_isoc_irq()
193 * Image pieces in URBs of ep 0x83 are continuated in URBs of in sd_isoc_irq()
195 * The packets in the URBs of endpoint 0x83 start with: in sd_isoc_irq()
228 /* resubmit the URBs */ in sd_isoc_irq()
H A Dgspca.h40 #define MAX_NURBS 4 /* max number of URBs */
57 u8 no_urb_create; /* don't create transfer URBs */
58 u8 bulk_nurbs; /* number of URBs in bulk mode
109 cam_op start; /* called on stream on after URBs creation */
/linux/drivers/video/fbdev/
H A Dudlfb.c81 /* dlfb keeps a list of urbs for efficient bulk transfers */
412 * rendering can be done directly to output buffers (e.g. USB URBs).
1750 /* When non-active we'll update virtual framebuffer, but no new urbs */ in dlfb_usb_disconnect()
1753 /* this function will wait for all in-flight urbs to complete */ in dlfb_usb_disconnect()
1796 urb->transfer_buffer_length = dlfb->urbs.size; /* reset to actual */ in dlfb_urb_completion()
1798 spin_lock_irqsave(&dlfb->urbs.lock, flags); in dlfb_urb_completion()
1799 list_add_tail(&unode->entry, &dlfb->urbs.list); in dlfb_urb_completion()
1800 dlfb->urbs.available++; in dlfb_urb_completion()
1801 spin_unlock_irqrestore(&dlfb->urbs.lock, flags); in dlfb_urb_completion()
1803 up(&dlfb->urbs.limit_sem); in dlfb_urb_completion()
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H A Dsmscufx.c96 struct urb_list urbs; member
132 /* ufx keeps a list of urbs for efficient bulk transfers */
1086 up(&unode->dev->urbs.limit_sem); in ufx_release_urb_work()
1717 if (dev->urbs.count > 0) in ufx_usb_probe()
1740 /* When non-active we'll update virtual framebuffer, but no new urbs */ in ufx_usb_disconnect()
1749 /* this function will wait for all in-flight urbs to complete */ in ufx_usb_disconnect()
1750 if (dev->urbs.count > 0) in ufx_usb_disconnect()
1786 urb->transfer_buffer_length = dev->urbs.size; /* reset to actual */ in ufx_urb_completion()
1788 spin_lock_irqsave(&dev->urbs.lock, flags); in ufx_urb_completion()
1789 list_add_tail(&unode->entry, &dev->urbs.list); in ufx_urb_completion()
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/linux/sound/usb/
H A Dendpoint.c53 * There are functions to activate and deactivate the streaming URBs and
72 * only the first user will effectively start the URBs, and only the last
73 * one to stop it will tear the URBs down again.
445 * Send output urbs that have been prepared previously. URBs are dequeued in push_back_to_ready_list()
450 * The reason why the functionality of sending and preparing URBs is separated
528 * complete callback for urbs in snd_usb_queue_pending_output_urbs()
979 * wait until all urbs are processed. in snd_usb_endpoint_close()
999 "timeout: still %d active urbs on EP #%x\n", in snd_usb_endpoint_suspend()
1020 * Stop active urbs in wait_clear_urbs()
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H A Dmidi.c125 } urbs[OUTPUT_URBS]; member
155 struct urb *urbs[INPUT_URBS]; member
270 urb_index = context - ep->urbs; in snd_usbmidi_out_urb_complete()
305 urb = ep->urbs[urb_index].urb; in snd_usbmidi_do_output()
349 if (atomic_read(&in->urbs[j]->use_count)) in snd_usbmidi_error_timer()
351 in->urbs[j]->dev = umidi->dev; in snd_usbmidi_error_timer()
352 snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC); in snd_usbmidi_error_timer()
369 if (ep->urbs[0].urb) in send_bulk_static_data()
370 err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe, in send_bulk_static_data()
1239 * currently active URBs, s in snd_usbmidi_output_drain()
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H A Dcard.h9 #define SYNC_URBS 4 /* always four urbs for sync */
100 unsigned int nurbs; /* # urbs */
101 unsigned long active_mask; /* bitmask of active urbs */
102 unsigned long unlink_mask; /* bitmask of unlinked urbs */
103 atomic_t submitted_urbs; /* currently submitted urbs */
104 char *syncbuf; /* sync buffer for all sync URBs */
H A Dmidi2.c69 unsigned int num_urbs; /* number of allocated URBs */
70 unsigned long urb_free; /* bitmap for free URBs */
71 unsigned long urb_free_mask; /* bitmask for free URBs */
76 struct snd_usb_midi2_urb urbs[NUM_URBS]; member
104 /* submit URBs as much as possible; used for both input and output */
119 ctx = &ep->urbs[index]; in do_submit_urbs_locked()
222 /* kill URBs for close, suspend and disconnect */ in submit_io_urbs()
233 if (!ep->urbs[i].urb) in kill_midi_urbs()
235 usb_kill_urb(ep->urbs[i].urb); in kill_midi_urbs()
239 /* wait until all URBs ge in kill_midi_urbs()
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/linux/drivers/usb/misc/
H A Dusbtest.c90 * urbs and buffers are allocated dynamically,
115 /* set up all urbs so they can be used with either bulk or interrupt */
247 * These just package urbs as requests that can be easily canceled.
1220 /* allocate and init the urbs we'll queue. in test_ctrl_queue()
1385 /* queue the urbs */ in test_ctrl_queue()
1479 /* we can't unlink urbs while they're completing in unlink1()
1531 struct urb **urbs; member
1541 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) { in unlink_queued_callback()
1574 /* Allocate and init the urbs we'll queue */ in unlink_queued()
1575 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL); in unlink_queued()
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/linux/drivers/usb/core/
H A Dmessage.c355 * users are forced to abuse this routine by using it to submit URBs for
396 if (io->urbs) { in sg_clean()
398 usb_free_urb(io->urbs[io->entries]); in sg_clean()
399 kfree(io->urbs); in sg_clean()
400 io->urbs = NULL; in sg_clean()
415 * device driver code (like this routine) unlink queued urbs first, in sg_complete()
441 /* the previous urbs, and this one, completed already. in sg_complete()
442 * unlink pending urbs so they won't rx/tx bad data. in sg_complete()
447 if (!io->urbs[i]) in sg_complete()
450 usb_block_urb(io->urbs[i]); in sg_complete()
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/linux/drivers/net/wireless/zydas/zd1211rw/
H A Dzd_usb.c750 struct urb **urbs; in __zd_usb_enable_rx() local
755 urbs = kcalloc(RX_URBS_COUNT, sizeof(struct urb *), GFP_KERNEL); in __zd_usb_enable_rx()
756 if (!urbs) in __zd_usb_enable_rx()
759 urbs[i] = alloc_rx_urb(usb); in __zd_usb_enable_rx()
760 if (!urbs[i]) in __zd_usb_enable_rx()
766 if (rx->urbs) { in __zd_usb_enable_rx()
771 rx->urbs = urbs; in __zd_usb_enable_rx()
776 r = usb_submit_urb(urbs[i], GFP_KERNEL); in __zd_usb_enable_rx()
784 usb_kill_urb(urbs[i]); in __zd_usb_enable_rx()
787 rx->urbs = NULL; in __zd_usb_enable_rx()
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/linux/drivers/media/usb/au0828/
H A Dau0828-dvb.c176 if (dev->urbs[i]) { in stop_urb_transfer()
177 usb_kill_urb(dev->urbs[i]); in stop_urb_transfer()
179 kfree(dev->urbs[i]->transfer_buffer); in stop_urb_transfer()
181 usb_free_urb(dev->urbs[i]); in stop_urb_transfer()
202 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); in start_urb_transfer()
203 if (!dev->urbs[i]) in start_urb_transfer()
206 purb = dev->urbs[i]; in start_urb_transfer()
216 dev->urbs[i] = NULL; in start_urb_transfer()
236 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC); in start_urb_transfer()
/linux/drivers/usb/atm/
H A Dusbatm.c38 * - unlink all active send urbs of a vcc that is being closed.
105 "Number of urbs used for reception (range: 0-"
111 "Number of urbs used for transmission (range: 0-"
193 ** urbs **
938 /* submit all rx URBs */ in usbatm_atm_init()
940 usbatm_submit_urb(instance->urbs[i]); in usbatm_atm_init()
1021 size = struct_size(instance, urbs, in usbatm_usb_probe()
1120 /* initialize urbs */ in usbatm_usb_probe()
1135 instance->urbs[i] = urb; in usbatm_usb_probe()
1157 /* put all tx URBs on the list of spares */ in usbatm_usb_probe()
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/linux/sound/usb/misc/
H A Dua101.c115 } *urbs[MAX_QUEUE_LENGTH]; member
263 * and capture URBs must have been completed. Since the USB core does in playback_work()
265 * called alternately, we use two FIFOs for packet sizes and read URBs; in playback_work()
266 * submitting playback URBs is possible as long as both FIFOs are in playback_work()
430 int err = usb_submit_urb(&stream->urbs[i]->urb, GFP_KERNEL);
445 if (stream->urbs[i])
446 usb_kill_urb(&stream->urbs[i]->urb); in kill_stream_urbs()
511 ua->capture.urbs[0]->urb.complete = first_capture_urb_complete; in start_usb_capture()
553 ua->playback.urbs[0]->urb.complete = in start_usb_playback()
560 * We submit the initial URBs al in start_usb_playback()
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/linux/drivers/greybus/
H A Des2.c47 * Number of CPort IN urbs in flight at any point in time.
48 * Adjust if we are having stalls in the USB buffer due to not enough urbs in
53 /* Number of CPort OUT urbs in flight at any point in time.
54 * Adjust if we get messages saying we are out of urbs in the system log.
59 * Number of ARPC in urbs in flight at any point in time.
65 * @urb: array of urbs for the CPort in messages
66 * @buffer: array of buffers for the @cport_in_urb urbs
80 * @cport_in: endpoint, urbs and buffer for cport in messages
82 * @cport_out_urb: array of urbs for the CPort out messages
93 * @arpc_urb: array of urbs for the ARPC in messages
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