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20#ifndef __USB_CORE_HCD_H
21#define __USB_CORE_HCD_H
22
23#ifdef __KERNEL__
24
25#include <linux/rwsem.h>
26#include <linux/interrupt.h>
27#include <linux/idr.h>
28
29#define MAX_TOPO_LEVEL 6
30
31
32
33
34
35
36
37
38#define USB_PID_EXT 0xf0
39#define USB_PID_OUT 0xe1
40#define USB_PID_ACK 0xd2
41#define USB_PID_DATA0 0xc3
42#define USB_PID_PING 0xb4
43#define USB_PID_SOF 0xa5
44#define USB_PID_NYET 0x96
45#define USB_PID_DATA2 0x87
46#define USB_PID_SPLIT 0x78
47#define USB_PID_IN 0x69
48#define USB_PID_NAK 0x5a
49#define USB_PID_DATA1 0x4b
50#define USB_PID_PREAMBLE 0x3c
51#define USB_PID_ERR 0x3c
52#define USB_PID_SETUP 0x2d
53#define USB_PID_STALL 0x1e
54#define USB_PID_MDATA 0x0f
55
56
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64
65
66
67struct giveback_urb_bh {
68 bool running;
69 spinlock_t lock;
70 struct list_head head;
71 struct tasklet_struct bh;
72 struct usb_host_endpoint *completing_ep;
73};
74
75enum usb_dev_authorize_policy {
76 USB_DEVICE_AUTHORIZE_NONE = 0,
77 USB_DEVICE_AUTHORIZE_ALL = 1,
78 USB_DEVICE_AUTHORIZE_INTERNAL = 2,
79};
80
81struct usb_hcd {
82
83
84
85
86 struct usb_bus self;
87 struct kref kref;
88
89 const char *product_desc;
90 int speed;
91
92
93
94 char irq_descr[24];
95
96 struct timer_list rh_timer;
97 struct urb *status_urb;
98#ifdef CONFIG_PM
99 struct work_struct wakeup_work;
100#endif
101 struct work_struct died_work;
102
103
104
105
106 const struct hc_driver *driver;
107
108
109
110
111
112 struct usb_phy *usb_phy;
113 struct usb_phy_roothub *phy_roothub;
114
115
116
117
118
119 unsigned long flags;
120#define HCD_FLAG_HW_ACCESSIBLE 0
121#define HCD_FLAG_POLL_RH 2
122#define HCD_FLAG_POLL_PENDING 3
123#define HCD_FLAG_WAKEUP_PENDING 4
124#define HCD_FLAG_RH_RUNNING 5
125#define HCD_FLAG_DEAD 6
126#define HCD_FLAG_INTF_AUTHORIZED 7
127#define HCD_FLAG_DEFER_RH_REGISTER 8
128
129
130
131
132#define HCD_HW_ACCESSIBLE(hcd) ((hcd)->flags & (1U << HCD_FLAG_HW_ACCESSIBLE))
133#define HCD_POLL_RH(hcd) ((hcd)->flags & (1U << HCD_FLAG_POLL_RH))
134#define HCD_POLL_PENDING(hcd) ((hcd)->flags & (1U << HCD_FLAG_POLL_PENDING))
135#define HCD_WAKEUP_PENDING(hcd) ((hcd)->flags & (1U << HCD_FLAG_WAKEUP_PENDING))
136#define HCD_RH_RUNNING(hcd) ((hcd)->flags & (1U << HCD_FLAG_RH_RUNNING))
137#define HCD_DEAD(hcd) ((hcd)->flags & (1U << HCD_FLAG_DEAD))
138#define HCD_DEFER_RH_REGISTER(hcd) ((hcd)->flags & (1U << HCD_FLAG_DEFER_RH_REGISTER))
139
140
141
142
143
144
145#define HCD_INTF_AUTHORIZED(hcd) \
146 ((hcd)->flags & (1U << HCD_FLAG_INTF_AUTHORIZED))
147
148
149
150
151
152
153 enum usb_dev_authorize_policy dev_policy;
154
155
156 unsigned rh_registered:1;
157 unsigned rh_pollable:1;
158 unsigned msix_enabled:1;
159 unsigned msi_enabled:1;
160
161
162
163
164
165 unsigned skip_phy_initialization:1;
166
167
168
169 unsigned uses_new_polling:1;
170 unsigned wireless:1;
171 unsigned has_tt:1;
172 unsigned amd_resume_bug:1;
173 unsigned can_do_streams:1;
174 unsigned tpl_support:1;
175 unsigned cant_recv_wakeups:1;
176
177
178 unsigned int irq;
179 void __iomem *regs;
180 resource_size_t rsrc_start;
181 resource_size_t rsrc_len;
182 unsigned power_budget;
183
184 struct giveback_urb_bh high_prio_bh;
185 struct giveback_urb_bh low_prio_bh;
186
187
188
189
190
191
192
193
194
195
196
197
198 struct mutex *address0_mutex;
199 struct mutex *bandwidth_mutex;
200 struct usb_hcd *shared_hcd;
201 struct usb_hcd *primary_hcd;
202
203
204#define HCD_BUFFER_POOLS 4
205 struct dma_pool *pool[HCD_BUFFER_POOLS];
206
207 int state;
208# define __ACTIVE 0x01
209# define __SUSPEND 0x04
210# define __TRANSIENT 0x80
211
212# define HC_STATE_HALT 0
213# define HC_STATE_RUNNING (__ACTIVE)
214# define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE)
215# define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT)
216# define HC_STATE_SUSPENDED (__SUSPEND)
217
218#define HC_IS_RUNNING(state) ((state) & __ACTIVE)
219#define HC_IS_SUSPENDED(state) ((state) & __SUSPEND)
220
221
222 struct gen_pool *localmem_pool;
223
224
225
226
227
228
229
230
231
232
233 unsigned long hcd_priv[]
234 __attribute__ ((aligned(sizeof(s64))));
235};
236
237
238static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd)
239{
240 return &hcd->self;
241}
242
243static inline struct usb_hcd *bus_to_hcd(struct usb_bus *bus)
244{
245 return container_of(bus, struct usb_hcd, self);
246}
247
248
249
250
251struct hc_driver {
252 const char *description;
253 const char *product_desc;
254 size_t hcd_priv_size;
255
256
257 irqreturn_t (*irq) (struct usb_hcd *hcd);
258
259 int flags;
260#define HCD_MEMORY 0x0001
261#define HCD_DMA 0x0002
262#define HCD_SHARED 0x0004
263#define HCD_USB11 0x0010
264#define HCD_USB2 0x0020
265#define HCD_USB25 0x0030
266#define HCD_USB3 0x0040
267#define HCD_USB31 0x0050
268#define HCD_USB32 0x0060
269#define HCD_MASK 0x0070
270#define HCD_BH 0x0100
271
272
273 int (*reset) (struct usb_hcd *hcd);
274 int (*start) (struct usb_hcd *hcd);
275
276
277
278
279
280 int (*pci_suspend)(struct usb_hcd *hcd, bool do_wakeup);
281
282
283 int (*pci_resume)(struct usb_hcd *hcd, bool hibernated);
284
285
286 void (*stop) (struct usb_hcd *hcd);
287
288
289 void (*shutdown) (struct usb_hcd *hcd);
290
291
292 int (*get_frame_number) (struct usb_hcd *hcd);
293
294
295 int (*urb_enqueue)(struct usb_hcd *hcd,
296 struct urb *urb, gfp_t mem_flags);
297 int (*urb_dequeue)(struct usb_hcd *hcd,
298 struct urb *urb, int status);
299
300
301
302
303
304
305
306
307
308
309 int (*map_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb,
310 gfp_t mem_flags);
311 void (*unmap_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb);
312
313
314 void (*endpoint_disable)(struct usb_hcd *hcd,
315 struct usb_host_endpoint *ep);
316
317
318
319 void (*endpoint_reset)(struct usb_hcd *hcd,
320 struct usb_host_endpoint *ep);
321
322
323 int (*hub_status_data) (struct usb_hcd *hcd, char *buf);
324 int (*hub_control) (struct usb_hcd *hcd,
325 u16 typeReq, u16 wValue, u16 wIndex,
326 char *buf, u16 wLength);
327 int (*bus_suspend)(struct usb_hcd *);
328 int (*bus_resume)(struct usb_hcd *);
329 int (*start_port_reset)(struct usb_hcd *, unsigned port_num);
330 unsigned long (*get_resuming_ports)(struct usb_hcd *);
331
332
333 void (*relinquish_port)(struct usb_hcd *, int);
334
335 int (*port_handed_over)(struct usb_hcd *, int);
336
337
338 void (*clear_tt_buffer_complete)(struct usb_hcd *,
339 struct usb_host_endpoint *);
340
341
342
343 int (*alloc_dev)(struct usb_hcd *, struct usb_device *);
344
345 void (*free_dev)(struct usb_hcd *, struct usb_device *);
346
347 int (*alloc_streams)(struct usb_hcd *hcd, struct usb_device *udev,
348 struct usb_host_endpoint **eps, unsigned int num_eps,
349 unsigned int num_streams, gfp_t mem_flags);
350
351
352
353 int (*free_streams)(struct usb_hcd *hcd, struct usb_device *udev,
354 struct usb_host_endpoint **eps, unsigned int num_eps,
355 gfp_t mem_flags);
356
357
358
359
360
361
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363
364
365
366
367
368 int (*add_endpoint)(struct usb_hcd *, struct usb_device *,
369 struct usb_host_endpoint *);
370
371 int (*drop_endpoint)(struct usb_hcd *, struct usb_device *,
372 struct usb_host_endpoint *);
373
374
375
376
377
378 int (*check_bandwidth)(struct usb_hcd *, struct usb_device *);
379
380
381
382
383
384
385
386 void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
387
388 int (*address_device)(struct usb_hcd *, struct usb_device *udev);
389
390 int (*enable_device)(struct usb_hcd *, struct usb_device *udev);
391
392
393
394 int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev,
395 struct usb_tt *tt, gfp_t mem_flags);
396 int (*reset_device)(struct usb_hcd *, struct usb_device *);
397
398
399
400 int (*update_device)(struct usb_hcd *, struct usb_device *);
401 int (*set_usb2_hw_lpm)(struct usb_hcd *, struct usb_device *, int);
402
403
404 int (*enable_usb3_lpm_timeout)(struct usb_hcd *,
405 struct usb_device *, enum usb3_link_state state);
406
407
408
409 int (*disable_usb3_lpm_timeout)(struct usb_hcd *,
410 struct usb_device *, enum usb3_link_state state);
411 int (*find_raw_port_number)(struct usb_hcd *, int);
412
413 int (*port_power)(struct usb_hcd *hcd, int portnum, bool enable);
414
415#define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06
416 int (*submit_single_step_set_feature)(struct usb_hcd *,
417 struct urb *, int);
418};
419
420static inline int hcd_giveback_urb_in_bh(struct usb_hcd *hcd)
421{
422 return hcd->driver->flags & HCD_BH;
423}
424
425static inline bool hcd_periodic_completion_in_progress(struct usb_hcd *hcd,
426 struct usb_host_endpoint *ep)
427{
428 return hcd->high_prio_bh.completing_ep == ep;
429}
430
431static inline bool hcd_uses_dma(struct usb_hcd *hcd)
432{
433 return IS_ENABLED(CONFIG_HAS_DMA) && (hcd->driver->flags & HCD_DMA);
434}
435
436extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);
437extern int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb,
438 int status);
439extern void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb);
440
441extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags);
442extern int usb_hcd_unlink_urb(struct urb *urb, int status);
443extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb,
444 int status);
445extern int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
446 gfp_t mem_flags);
447extern void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *, struct urb *);
448extern void usb_hcd_unmap_urb_for_dma(struct usb_hcd *, struct urb *);
449extern void usb_hcd_flush_endpoint(struct usb_device *udev,
450 struct usb_host_endpoint *ep);
451extern void usb_hcd_disable_endpoint(struct usb_device *udev,
452 struct usb_host_endpoint *ep);
453extern void usb_hcd_reset_endpoint(struct usb_device *udev,
454 struct usb_host_endpoint *ep);
455extern void usb_hcd_synchronize_unlinks(struct usb_device *udev);
456extern int usb_hcd_alloc_bandwidth(struct usb_device *udev,
457 struct usb_host_config *new_config,
458 struct usb_host_interface *old_alt,
459 struct usb_host_interface *new_alt);
460extern int usb_hcd_get_frame_number(struct usb_device *udev);
461
462struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
463 struct device *sysdev, struct device *dev, const char *bus_name,
464 struct usb_hcd *primary_hcd);
465extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver,
466 struct device *dev, const char *bus_name);
467extern struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
468 struct device *dev, const char *bus_name,
469 struct usb_hcd *shared_hcd);
470extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd);
471extern void usb_put_hcd(struct usb_hcd *hcd);
472extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd);
473extern int usb_add_hcd(struct usb_hcd *hcd,
474 unsigned int irqnum, unsigned long irqflags);
475extern void usb_remove_hcd(struct usb_hcd *hcd);
476extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1);
477int usb_hcd_setup_local_mem(struct usb_hcd *hcd, phys_addr_t phys_addr,
478 dma_addr_t dma, size_t size);
479
480struct platform_device;
481extern void usb_hcd_platform_shutdown(struct platform_device *dev);
482#ifdef CONFIG_USB_HCD_TEST_MODE
483extern int ehset_single_step_set_feature(struct usb_hcd *hcd, int port);
484#else
485static inline int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
486{
487 return 0;
488}
489#endif
490
491#ifdef CONFIG_USB_PCI
492struct pci_dev;
493struct pci_device_id;
494extern int usb_hcd_pci_probe(struct pci_dev *dev,
495 const struct pci_device_id *id,
496 const struct hc_driver *driver);
497extern void usb_hcd_pci_remove(struct pci_dev *dev);
498extern void usb_hcd_pci_shutdown(struct pci_dev *dev);
499
500extern int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev);
501
502#ifdef CONFIG_PM
503extern const struct dev_pm_ops usb_hcd_pci_pm_ops;
504#endif
505#endif
506
507
508void usb_init_pool_max(void);
509int hcd_buffer_create(struct usb_hcd *hcd);
510void hcd_buffer_destroy(struct usb_hcd *hcd);
511
512void *hcd_buffer_alloc(struct usb_bus *bus, size_t size,
513 gfp_t mem_flags, dma_addr_t *dma);
514void hcd_buffer_free(struct usb_bus *bus, size_t size,
515 void *addr, dma_addr_t dma);
516
517
518extern irqreturn_t usb_hcd_irq(int irq, void *__hcd);
519
520extern void usb_hc_died(struct usb_hcd *hcd);
521extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd);
522extern void usb_wakeup_notification(struct usb_device *hdev,
523 unsigned int portnum);
524
525extern void usb_hcd_start_port_resume(struct usb_bus *bus, int portnum);
526extern void usb_hcd_end_port_resume(struct usb_bus *bus, int portnum);
527
528
529#define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1)
530#define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep)))
531#define usb_settoggle(dev, ep, out, bit) \
532 ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \
533 ((bit) << (ep)))
534
535
536
537
538extern struct usb_device *usb_alloc_dev(struct usb_device *parent,
539 struct usb_bus *, unsigned port);
540extern int usb_new_device(struct usb_device *dev);
541extern void usb_disconnect(struct usb_device **);
542
543extern int usb_get_configuration(struct usb_device *dev);
544extern void usb_destroy_configuration(struct usb_device *dev);
545
546
547
548
549
550
551
552#include <linux/usb/ch11.h>
553
554
555
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560
561
562
563
564
565struct usb_device;
566
567struct usb_tt {
568 struct usb_device *hub;
569 int multi;
570 unsigned think_time;
571 void *hcpriv;
572
573
574 spinlock_t lock;
575 struct list_head clear_list;
576 struct work_struct clear_work;
577};
578
579struct usb_tt_clear {
580 struct list_head clear_list;
581 unsigned tt;
582 u16 devinfo;
583 struct usb_hcd *hcd;
584 struct usb_host_endpoint *ep;
585};
586
587extern int usb_hub_clear_tt_buffer(struct urb *urb);
588extern void usb_ep0_reinit(struct usb_device *);
589
590
591#define DeviceRequest \
592 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
593#define DeviceOutRequest \
594 ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
595
596#define InterfaceRequest \
597 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
598
599#define EndpointRequest \
600 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
601#define EndpointOutRequest \
602 ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
603
604
605#define HUB_CLASS_REQ(dir, type, request) ((((dir) | (type)) << 8) | (request))
606
607#define ClearHubFeature HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_HUB, USB_REQ_CLEAR_FEATURE)
608#define ClearPortFeature HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_PORT, USB_REQ_CLEAR_FEATURE)
609#define GetHubDescriptor HUB_CLASS_REQ(USB_DIR_IN, USB_RT_HUB, USB_REQ_GET_DESCRIPTOR)
610#define GetHubStatus HUB_CLASS_REQ(USB_DIR_IN, USB_RT_HUB, USB_REQ_GET_STATUS)
611#define GetPortStatus HUB_CLASS_REQ(USB_DIR_IN, USB_RT_PORT, USB_REQ_GET_STATUS)
612#define SetHubFeature HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_HUB, USB_REQ_SET_FEATURE)
613#define SetPortFeature HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_PORT, USB_REQ_SET_FEATURE)
614#define ClearTTBuffer HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_PORT, HUB_CLEAR_TT_BUFFER)
615#define ResetTT HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_PORT, HUB_RESET_TT)
616#define GetTTState HUB_CLASS_REQ(USB_DIR_IN, USB_RT_PORT, HUB_GET_TT_STATE)
617#define StopTT HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_PORT, HUB_STOP_TT)
618
619
620
621
622
623#define SetHubDepth HUB_CLASS_REQ(USB_DIR_OUT, USB_RT_HUB, HUB_SET_DEPTH)
624#define GetPortErrorCount HUB_CLASS_REQ(USB_DIR_IN, USB_RT_PORT, HUB_GET_PORT_ERR_COUNT)
625
626
627
628
629#define FRAME_TIME_USECS 1000L
630#define BitTime(bytecount) (7 * 8 * bytecount / 6)
631
632
633
634
635#define NS_TO_US(ns) DIV_ROUND_UP(ns, 1000L)
636
637
638
639
640
641#define BW_HOST_DELAY 1000L
642#define BW_HUB_LS_SETUP 333L
643
644
645#define FRAME_TIME_BITS 12000L
646#define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L)
647#define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L)
648
649
650
651
652
653
654#define USB2_HOST_DELAY 5
655#define HS_NSECS(bytes) (((55 * 8 * 2083) \
656 + (2083UL * (3 + BitTime(bytes))))/1000 \
657 + USB2_HOST_DELAY)
658#define HS_NSECS_ISO(bytes) (((38 * 8 * 2083) \
659 + (2083UL * (3 + BitTime(bytes))))/1000 \
660 + USB2_HOST_DELAY)
661#define HS_USECS(bytes) NS_TO_US(HS_NSECS(bytes))
662#define HS_USECS_ISO(bytes) NS_TO_US(HS_NSECS_ISO(bytes))
663
664extern long usb_calc_bus_time(int speed, int is_input,
665 int isoc, int bytecount);
666
667
668
669extern void usb_set_device_state(struct usb_device *udev,
670 enum usb_device_state new_state);
671
672
673
674
675
676extern struct idr usb_bus_idr;
677extern struct mutex usb_bus_idr_lock;
678extern wait_queue_head_t usb_kill_urb_queue;
679
680
681#define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN))
682
683#ifdef CONFIG_PM
684extern unsigned usb_wakeup_enabled_descendants(struct usb_device *udev);
685extern void usb_root_hub_lost_power(struct usb_device *rhdev);
686extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg);
687extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg);
688extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
689#else
690static inline unsigned usb_wakeup_enabled_descendants(struct usb_device *udev)
691{
692 return 0;
693}
694static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
695{
696 return;
697}
698#endif
699
700
701
702#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
703
704struct usb_mon_operations {
705 void (*urb_submit)(struct usb_bus *bus, struct urb *urb);
706 void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err);
707 void (*urb_complete)(struct usb_bus *bus, struct urb *urb, int status);
708
709};
710
711extern const struct usb_mon_operations *mon_ops;
712
713static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb)
714{
715 if (bus->monitored)
716 (*mon_ops->urb_submit)(bus, urb);
717}
718
719static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
720 int error)
721{
722 if (bus->monitored)
723 (*mon_ops->urb_submit_error)(bus, urb, error);
724}
725
726static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb,
727 int status)
728{
729 if (bus->monitored)
730 (*mon_ops->urb_complete)(bus, urb, status);
731}
732
733int usb_mon_register(const struct usb_mon_operations *ops);
734void usb_mon_deregister(void);
735
736#else
737
738static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {}
739static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
740 int error) {}
741static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb,
742 int status) {}
743
744#endif
745
746
747
748
749
750
751
752
753extern struct rw_semaphore ehci_cf_port_reset_rwsem;
754
755
756#define USB_UHCI_LOADED 0
757#define USB_OHCI_LOADED 1
758#define USB_EHCI_LOADED 2
759extern unsigned long usb_hcds_loaded;
760
761#endif
762
763#endif
764