Line data Source code
1 : /*
2 : * Copyright (c) 2001-2002 by David Brownell
3 : *
4 : * This program is free software; you can redistribute it and/or modify it
5 : * under the terms of the GNU General Public License as published by the
6 : * Free Software Foundation; either version 2 of the License, or (at your
7 : * option) any later version.
8 : *
9 : * This program is distributed in the hope that it will be useful, but
10 : * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 : * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 : * for more details.
13 : *
14 : * You should have received a copy of the GNU General Public License
15 : * along with this program; if not, write to the Free Software Foundation,
16 : * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 : */
18 :
19 : #ifndef __USB_CORE_HCD_H
20 : #define __USB_CORE_HCD_H
21 :
22 : #ifdef __KERNEL__
23 :
24 : #include <linux/rwsem.h>
25 :
26 : #define MAX_TOPO_LEVEL 6
27 :
28 : /* This file contains declarations of usbcore internals that are mostly
29 : * used or exposed by Host Controller Drivers.
30 : */
31 :
32 : /*
33 : * USB Packet IDs (PIDs)
34 : */
35 : #define USB_PID_EXT 0xf0 /* USB 2.0 LPM ECN */
36 : #define USB_PID_OUT 0xe1
37 : #define USB_PID_ACK 0xd2
38 : #define USB_PID_DATA0 0xc3
39 : #define USB_PID_PING 0xb4 /* USB 2.0 */
40 : #define USB_PID_SOF 0xa5
41 : #define USB_PID_NYET 0x96 /* USB 2.0 */
42 : #define USB_PID_DATA2 0x87 /* USB 2.0 */
43 : #define USB_PID_SPLIT 0x78 /* USB 2.0 */
44 : #define USB_PID_IN 0x69
45 : #define USB_PID_NAK 0x5a
46 : #define USB_PID_DATA1 0x4b
47 : #define USB_PID_PREAMBLE 0x3c /* Token mode */
48 : #define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */
49 : #define USB_PID_SETUP 0x2d
50 : #define USB_PID_STALL 0x1e
51 : #define USB_PID_MDATA 0x0f /* USB 2.0 */
52 :
53 : /*-------------------------------------------------------------------------*/
54 :
55 : /*
56 : * USB Host Controller Driver (usb_hcd) framework
57 : *
58 : * Since "struct usb_bus" is so thin, you can't share much code in it.
59 : * This framework is a layer over that, and should be more sharable.
60 : *
61 : * @authorized_default: Specifies if new devices are authorized to
62 : * connect by default or they require explicit
63 : * user space authorization; this bit is settable
64 : * through /sys/class/usb_host/X/authorized_default.
65 : * For the rest is RO, so we don't lock to r/w it.
66 : */
67 :
68 : /*-------------------------------------------------------------------------*/
69 :
70 : struct usb_hcd {
71 :
72 : /*
73 : * housekeeping
74 : */
75 : struct usb_bus self; /* hcd is-a bus */
76 : struct kref kref; /* reference counter */
77 :
78 : const char *product_desc; /* product/vendor string */
79 : char irq_descr[24]; /* driver + bus # */
80 :
81 : struct timer_list rh_timer; /* drives root-hub polling */
82 : struct urb *status_urb; /* the current status urb */
83 : #ifdef CONFIG_PM
84 : struct work_struct wakeup_work; /* for remote wakeup */
85 : #endif
86 :
87 : /*
88 : * hardware info/state
89 : */
90 : const struct hc_driver *driver; /* hw-specific hooks */
91 :
92 : /* Flags that need to be manipulated atomically */
93 : unsigned long flags;
94 : #define HCD_FLAG_HW_ACCESSIBLE 0x00000001
95 : #define HCD_FLAG_SAW_IRQ 0x00000002
96 :
97 : unsigned rh_registered:1;/* is root hub registered? */
98 :
99 : /* The next flag is a stopgap, to be removed when all the HCDs
100 : * support the new root-hub polling mechanism. */
101 : unsigned uses_new_polling:1;
102 : unsigned poll_rh:1; /* poll for rh status? */
103 : unsigned poll_pending:1; /* status has changed? */
104 : unsigned wireless:1; /* Wireless USB HCD */
105 : unsigned authorized_default:1;
106 : unsigned has_tt:1; /* Integrated TT in root hub */
107 :
108 : int irq; /* irq allocated */
109 : void __iomem *regs; /* device memory/io */
110 : u64 rsrc_start; /* memory/io resource start */
111 : u64 rsrc_len; /* memory/io resource length */
112 : unsigned power_budget; /* in mA, 0 = no limit */
113 :
114 : /* bandwidth_mutex should be taken before adding or removing
115 : * any new bus bandwidth constraints:
116 : * 1. Before adding a configuration for a new device.
117 : * 2. Before removing the configuration to put the device into
118 : * the addressed state.
119 : * 3. Before selecting a different configuration.
120 : * 4. Before selecting an alternate interface setting.
121 : *
122 : * bandwidth_mutex should be dropped after a successful control message
123 : * to the device, or resetting the bandwidth after a failed attempt.
124 : */
125 : struct mutex bandwidth_mutex;
126 :
127 :
128 : #define HCD_BUFFER_POOLS 4
129 : struct dma_pool *pool [HCD_BUFFER_POOLS];
130 :
131 : int state;
132 : # define __ACTIVE 0x01
133 : # define __SUSPEND 0x04
134 : # define __TRANSIENT 0x80
135 :
136 : # define HC_STATE_HALT 0
137 : # define HC_STATE_RUNNING (__ACTIVE)
138 : # define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE)
139 : # define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT)
140 : # define HC_STATE_SUSPENDED (__SUSPEND)
141 :
142 : #define HC_IS_RUNNING(state) ((state) & __ACTIVE)
143 : #define HC_IS_SUSPENDED(state) ((state) & __SUSPEND)
144 :
145 : /* more shared queuing code would be good; it should support
146 : * smarter scheduling, handle transaction translators, etc;
147 : * input size of periodic table to an interrupt scheduler.
148 : * (ohci 32, uhci 1024, ehci 256/512/1024).
149 : */
150 :
151 : /* The HC driver's private data is stored at the end of
152 : * this structure.
153 : */
154 : unsigned long hcd_priv[0]
155 : __attribute__ ((aligned(sizeof(unsigned long))));
156 : };
157 :
158 : /* 2.4 does this a bit differently ... */
159 : static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd)
160 : {
161 : return &hcd->self;
162 : }
163 :
164 : static inline struct usb_hcd *bus_to_hcd(struct usb_bus *bus)
165 : {
166 6 : return container_of(bus, struct usb_hcd, self);
167 : }
168 :
169 : struct hcd_timeout { /* timeouts we allocate */
170 : struct list_head timeout_list;
171 : struct timer_list timer;
172 : };
173 1 :
174 : /*-------------------------------------------------------------------------*/
175 :
176 :
177 : struct hc_driver {
178 : const char *description; /* "ehci-hcd" etc */
179 : const char *product_desc; /* product/vendor string */
180 : size_t hcd_priv_size; /* size of private data */
181 :
182 : /* irq handler */
183 : irqreturn_t (*irq) (struct usb_hcd *hcd);
184 :
185 : int flags;
186 : #define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */
187 : #define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */
188 : #define HCD_USB11 0x0010 /* USB 1.1 */
189 : #define HCD_USB2 0x0020 /* USB 2.0 */
190 : #define HCD_USB3 0x0040 /* USB 3.0 */
191 : #define HCD_MASK 0x0070
192 :
193 : /* called to init HCD and root hub */
194 : int (*reset) (struct usb_hcd *hcd);
195 : int (*start) (struct usb_hcd *hcd);
196 :
197 : /* NOTE: these suspend/resume calls relate to the HC as
198 : * a whole, not just the root hub; they're for PCI bus glue.
199 : */
200 : /* called after suspending the hub, before entering D3 etc */
201 : int (*pci_suspend)(struct usb_hcd *hcd);
202 :
203 : /* called after entering D0 (etc), before resuming the hub */
204 : int (*pci_resume)(struct usb_hcd *hcd, bool hibernated);
205 :
206 : /* cleanly make HCD stop writing memory and doing I/O */
207 : void (*stop) (struct usb_hcd *hcd);
208 :
209 : /* shutdown HCD */
210 : void (*shutdown) (struct usb_hcd *hcd);
211 :
212 : /* return current frame number */
213 : int (*get_frame_number) (struct usb_hcd *hcd);
214 :
215 : /* manage i/o requests, device state */
216 : int (*urb_enqueue)(struct usb_hcd *hcd,
217 : struct urb *urb, gfp_t mem_flags);
218 : int (*urb_dequeue)(struct usb_hcd *hcd,
219 : struct urb *urb, int status);
220 :
221 : /* hw synch, freeing endpoint resources that urb_dequeue can't */
222 : void (*endpoint_disable)(struct usb_hcd *hcd,
223 : struct usb_host_endpoint *ep);
224 :
225 : /* (optional) reset any endpoint state such as sequence number
226 : and current window */
227 : void (*endpoint_reset)(struct usb_hcd *hcd,
228 : struct usb_host_endpoint *ep);
229 :
230 : /* root hub support */
231 : int (*hub_status_data) (struct usb_hcd *hcd, char *buf);
232 : int (*hub_control) (struct usb_hcd *hcd,
233 : u16 typeReq, u16 wValue, u16 wIndex,
234 : char *buf, u16 wLength);
235 : int (*bus_suspend)(struct usb_hcd *);
236 : int (*bus_resume)(struct usb_hcd *);
237 : int (*start_port_reset)(struct usb_hcd *, unsigned port_num);
238 :
239 : /* force handover of high-speed port to full-speed companion */
240 : void (*relinquish_port)(struct usb_hcd *, int);
241 : /* has a port been handed over to a companion? */
242 : int (*port_handed_over)(struct usb_hcd *, int);
243 :
244 : /* CLEAR_TT_BUFFER completion callback */
245 : void (*clear_tt_buffer_complete)(struct usb_hcd *,
246 : struct usb_host_endpoint *);
247 :
248 : /* xHCI specific functions */
249 : /* Called by usb_alloc_dev to alloc HC device structures */
250 : int (*alloc_dev)(struct usb_hcd *, struct usb_device *);
251 : /* Called by usb_disconnect to free HC device structures */
252 : void (*free_dev)(struct usb_hcd *, struct usb_device *);
253 :
254 : /* Bandwidth computation functions */
255 : /* Note that add_endpoint() can only be called once per endpoint before
256 : * check_bandwidth() or reset_bandwidth() must be called.
257 : * drop_endpoint() can only be called once per endpoint also.
258 : * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will
259 : * add the endpoint to the schedule with possibly new parameters denoted by a
260 : * different endpoint descriptor in usb_host_endpoint.
261 : * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is
262 : * not allowed.
263 : */
264 : /* Allocate endpoint resources and add them to a new schedule */
265 : int (*add_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *);
266 : /* Drop an endpoint from a new schedule */
267 : int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *);
268 : /* Check that a new hardware configuration, set using
269 : * endpoint_enable and endpoint_disable, does not exceed bus
270 : * bandwidth. This must be called before any set configuration
271 : * or set interface requests are sent to the device.
272 : */
273 : int (*check_bandwidth)(struct usb_hcd *, struct usb_device *);
274 : /* Reset the device schedule to the last known good schedule,
275 : * which was set from a previous successful call to
276 : * check_bandwidth(). This reverts any add_endpoint() and
277 : * drop_endpoint() calls since that last successful call.
278 : * Used for when a check_bandwidth() call fails due to resource
279 : * or bandwidth constraints.
280 : */
281 : void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
282 : /* Returns the hardware-chosen device address */
283 : int (*address_device)(struct usb_hcd *, struct usb_device *udev);
284 : /* Notifies the HCD after a hub descriptor is fetched.
285 : * Will block.
286 : */
287 : int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev,
288 : struct usb_tt *tt, gfp_t mem_flags);
289 : };
290 :
291 : extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);
292 : extern int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb,
293 : int status);
294 : extern void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb);
295 :
296 : extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags);
297 : extern int usb_hcd_unlink_urb(struct urb *urb, int status);
298 : extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb,
299 : int status);
300 : extern void usb_hcd_flush_endpoint(struct usb_device *udev,
301 : struct usb_host_endpoint *ep);
302 : extern void usb_hcd_disable_endpoint(struct usb_device *udev,
303 : struct usb_host_endpoint *ep);
304 : extern void usb_hcd_reset_endpoint(struct usb_device *udev,
305 : struct usb_host_endpoint *ep);
306 : extern void usb_hcd_synchronize_unlinks(struct usb_device *udev);
307 : extern int usb_hcd_alloc_bandwidth(struct usb_device *udev,
308 : struct usb_host_config *new_config,
309 : struct usb_host_interface *old_alt,
310 : struct usb_host_interface *new_alt);
311 : extern int usb_hcd_get_frame_number(struct usb_device *udev);
312 :
313 : extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver,
314 : struct device *dev, const char *bus_name);
315 : extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd);
316 : extern void usb_put_hcd(struct usb_hcd *hcd);
317 : extern int usb_add_hcd(struct usb_hcd *hcd,
318 : unsigned int irqnum, unsigned long irqflags);
319 : extern void usb_remove_hcd(struct usb_hcd *hcd);
320 :
321 : struct platform_device;
322 : extern void usb_hcd_platform_shutdown(struct platform_device *dev);
323 :
324 : #ifdef CONFIG_PCI
325 : struct pci_dev;
326 : struct pci_device_id;
327 : extern int usb_hcd_pci_probe(struct pci_dev *dev,
328 : const struct pci_device_id *id);
329 : extern void usb_hcd_pci_remove(struct pci_dev *dev);
330 : extern void usb_hcd_pci_shutdown(struct pci_dev *dev);
331 :
332 : #ifdef CONFIG_PM_SLEEP
333 : extern const struct dev_pm_ops usb_hcd_pci_pm_ops;
334 : #endif
335 : #endif /* CONFIG_PCI */
336 :
337 : /* pci-ish (pdev null is ok) buffer alloc/mapping support */
338 : int hcd_buffer_create(struct usb_hcd *hcd);
339 : void hcd_buffer_destroy(struct usb_hcd *hcd);
340 :
341 : void *hcd_buffer_alloc(struct usb_bus *bus, size_t size,
342 : gfp_t mem_flags, dma_addr_t *dma);
343 : void hcd_buffer_free(struct usb_bus *bus, size_t size,
344 : void *addr, dma_addr_t dma);
345 :
346 : /* generic bus glue, needed for host controllers that don't use PCI */
347 : extern irqreturn_t usb_hcd_irq(int irq, void *__hcd);
348 :
349 : extern void usb_hc_died(struct usb_hcd *hcd);
350 : extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd);
351 :
352 : /* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */
353 : #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1)
354 : #define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep)))
355 : #define usb_settoggle(dev, ep, out, bit) \
356 : ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \
357 : ((bit) << (ep)))
358 :
359 : /* -------------------------------------------------------------------------- */
360 :
361 : /* Enumeration is only for the hub driver, or HCD virtual root hubs */
362 : extern struct usb_device *usb_alloc_dev(struct usb_device *parent,
363 : struct usb_bus *, unsigned port);
364 : extern int usb_new_device(struct usb_device *dev);
365 : extern void usb_disconnect(struct usb_device **);
366 :
367 : extern int usb_get_configuration(struct usb_device *dev);
368 : extern void usb_destroy_configuration(struct usb_device *dev);
369 :
370 : /*-------------------------------------------------------------------------*/
371 :
372 : /*
373 : * HCD Root Hub support
374 : */
375 :
376 : #include "hub.h"
377 :
378 : /* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
379 : #define DeviceRequest \
380 : ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
381 : #define DeviceOutRequest \
382 : ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
383 :
384 : #define InterfaceRequest \
385 : ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
386 :
387 : #define EndpointRequest \
388 : ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
389 : #define EndpointOutRequest \
390 : ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
391 :
392 : /* class requests from the USB 2.0 hub spec, table 11-15 */
393 : /* GetBusState and SetHubDescriptor are optional, omitted */
394 : #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
395 : #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
396 : #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
397 : #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
398 : #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
399 : #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
400 : #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
401 :
402 :
403 : /*-------------------------------------------------------------------------*/
404 :
405 : /*
406 : * Generic bandwidth allocation constants/support
407 : */
408 : #define FRAME_TIME_USECS 1000L
409 : #define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */
410 : /* Trying not to use worst-case bit-stuffing
411 : * of (7/6 * 8 * bytecount) = 9.33 * bytecount */
412 : /* bytecount = data payload byte count */
413 :
414 : #define NS_TO_US(ns) ((ns + 500L) / 1000L)
415 : /* convert & round nanoseconds to microseconds */
416 :
417 :
418 : /*
419 : * Full/low speed bandwidth allocation constants/support.
420 : */
421 : #define BW_HOST_DELAY 1000L /* nanoseconds */
422 : #define BW_HUB_LS_SETUP 333L /* nanoseconds */
423 : /* 4 full-speed bit times (est.) */
424 :
425 : #define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */
426 : #define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L)
427 : #define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L)
428 :
429 : /*
430 : * Ceiling [nano/micro]seconds (typical) for that many bytes at high speed
431 : * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed
432 : * to preallocate bandwidth)
433 : */
434 : #define USB2_HOST_DELAY 5 /* nsec, guess */
435 : #define HS_NSECS(bytes) (((55 * 8 * 2083) \
436 : + (2083UL * (3 + BitTime(bytes))))/1000 \
437 : + USB2_HOST_DELAY)
438 : #define HS_NSECS_ISO(bytes) (((38 * 8 * 2083) \
439 : + (2083UL * (3 + BitTime(bytes))))/1000 \
440 : + USB2_HOST_DELAY)
441 : #define HS_USECS(bytes) NS_TO_US (HS_NSECS(bytes))
442 : #define HS_USECS_ISO(bytes) NS_TO_US (HS_NSECS_ISO(bytes))
443 :
444 : extern long usb_calc_bus_time(int speed, int is_input,
445 : int isoc, int bytecount);
446 :
447 : /*-------------------------------------------------------------------------*/
448 :
449 : extern void usb_set_device_state(struct usb_device *udev,
450 : enum usb_device_state new_state);
451 :
452 : /*-------------------------------------------------------------------------*/
453 :
454 : /* exported only within usbcore */
455 :
456 : extern struct list_head usb_bus_list;
457 : extern struct mutex usb_bus_list_lock;
458 : extern wait_queue_head_t usb_kill_urb_queue;
459 :
460 : extern int usb_find_interface_driver(struct usb_device *dev,
461 : struct usb_interface *interface);
462 :
463 : #define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN))
464 :
465 : #ifdef CONFIG_PM
466 : extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
467 : extern void usb_root_hub_lost_power(struct usb_device *rhdev);
468 : extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg);
469 : extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg);
470 : #else
471 : static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
472 : {
473 4 : return;
474 : }
475 : #endif /* CONFIG_PM */
476 :
477 : /*
478 : * USB device fs stuff
479 : */
480 :
481 : #ifdef CONFIG_USB_DEVICEFS
482 :
483 : /*
484 : * these are expected to be called from the USB core/hub thread
485 : * with the kernel lock held
486 : */
487 : extern void usbfs_update_special(void);
488 : extern int usbfs_init(void);
489 : extern void usbfs_cleanup(void);
490 :
491 : #else /* CONFIG_USB_DEVICEFS */
492 :
493 : static inline void usbfs_update_special(void) {}
494 : static inline int usbfs_init(void) { return 0; }
495 : static inline void usbfs_cleanup(void) { }
496 :
497 : #endif /* CONFIG_USB_DEVICEFS */
498 :
499 : /*-------------------------------------------------------------------------*/
500 :
501 : #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
502 :
503 : struct usb_mon_operations {
504 : void (*urb_submit)(struct usb_bus *bus, struct urb *urb);
505 : void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err);
506 : void (*urb_complete)(struct usb_bus *bus, struct urb *urb, int status);
507 : /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */
508 : };
509 :
510 : extern struct usb_mon_operations *mon_ops;
511 :
512 : static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb)
513 : {
514 : if (bus->monitored)
515 : (*mon_ops->urb_submit)(bus, urb);
516 : }
517 :
518 : static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
519 : int error)
520 : {
521 : if (bus->monitored)
522 : (*mon_ops->urb_submit_error)(bus, urb, error);
523 : }
524 :
525 : static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb,
526 : int status)
527 : {
528 : if (bus->monitored)
529 : (*mon_ops->urb_complete)(bus, urb, status);
530 : }
531 :
532 : int usb_mon_register(struct usb_mon_operations *ops);
533 : void usb_mon_deregister(void);
534 :
535 : #else
536 :
537 : static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {}
538 : static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
539 : int error) {}
540 : static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb,
541 : int status) {}
542 :
543 : #endif /* CONFIG_USB_MON || CONFIG_USB_MON_MODULE */
544 :
545 : /*-------------------------------------------------------------------------*/
546 :
547 : /* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */
548 : /* bleech -- resurfaced in 2.4.11 or 2.4.12 */
549 : #define bitmap DeviceRemovable
550 :
551 :
552 : /*-------------------------------------------------------------------------*/
553 :
554 : /* random stuff */
555 :
556 : #define RUN_CONTEXT (in_irq() ? "in_irq" \
557 : : (in_interrupt() ? "in_interrupt" : "can sleep"))
558 :
559 :
560 : /* This rwsem is for use only by the hub driver and ehci-hcd.
561 : * Nobody else should touch it.
562 : */
563 1 : extern struct rw_semaphore ehci_cf_port_reset_rwsem;
564 :
565 : /* Keep track of which host controller drivers are loaded */
566 : #define USB_UHCI_LOADED 0
567 : #define USB_OHCI_LOADED 1
568 : #define USB_EHCI_LOADED 2
569 1 : extern unsigned long usb_hcds_loaded;
570 :
571 : #endif /* __KERNEL__ */
572 :
573 : #endif /* __USB_CORE_HCD_H */
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