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_USB_SUSPEND 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 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 }; 173 174 /*-------------------------------------------------------------------------*/ 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 /* Change a group of bulk endpoints to support multiple stream IDs */ 254 int (*alloc_streams)(struct usb_hcd *hcd, struct usb_device *udev, 255 struct usb_host_endpoint **eps, unsigned int num_eps, 256 unsigned int num_streams, gfp_t mem_flags); 257 /* Reverts a group of bulk endpoints back to not using stream IDs. 258 * Can fail if we run out of memory. 259 */ 260 int (*free_streams)(struct usb_hcd *hcd, struct usb_device *udev, 261 struct usb_host_endpoint **eps, unsigned int num_eps, 262 gfp_t mem_flags); 263 264 /* Bandwidth computation functions */ 265 /* Note that add_endpoint() can only be called once per endpoint before 266 * check_bandwidth() or reset_bandwidth() must be called. 267 * drop_endpoint() can only be called once per endpoint also. 268 * A call to xhci_drop_endpoint() followed by a call to 269 * xhci_add_endpoint() will add the endpoint to the schedule with 270 * possibly new parameters denoted by a different endpoint descriptor 271 * in usb_host_endpoint. A call to xhci_add_endpoint() followed by a 272 * call to xhci_drop_endpoint() is not allowed. 273 */ 274 /* Allocate endpoint resources and add them to a new schedule */ 275 int (*add_endpoint)(struct usb_hcd *, struct usb_device *, 276 struct usb_host_endpoint *); 277 /* Drop an endpoint from a new schedule */ 278 int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, 279 struct usb_host_endpoint *); 280 /* Check that a new hardware configuration, set using 281 * endpoint_enable and endpoint_disable, does not exceed bus 282 * bandwidth. This must be called before any set configuration 283 * or set interface requests are sent to the device. 284 */ 285 int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); 286 /* Reset the device schedule to the last known good schedule, 287 * which was set from a previous successful call to 288 * check_bandwidth(). This reverts any add_endpoint() and 289 * drop_endpoint() calls since that last successful call. 290 * Used for when a check_bandwidth() call fails due to resource 291 * or bandwidth constraints. 292 */ 293 void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); 294 /* Returns the hardware-chosen device address */ 295 int (*address_device)(struct usb_hcd *, struct usb_device *udev); 296 /* Notifies the HCD after a hub descriptor is fetched. 297 * Will block. 298 */ 299 int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev, 300 struct usb_tt *tt, gfp_t mem_flags); 301 int (*reset_device)(struct usb_hcd *, struct usb_device *); 302 }; 303 304 extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); 305 extern int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb, 306 int status); 307 extern void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb); 308 309 extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags); 310 extern int usb_hcd_unlink_urb(struct urb *urb, int status); 311 extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, 312 int status); 313 extern void usb_hcd_flush_endpoint(struct usb_device *udev, 314 struct usb_host_endpoint *ep); 315 extern void usb_hcd_disable_endpoint(struct usb_device *udev, 316 struct usb_host_endpoint *ep); 317 extern void usb_hcd_reset_endpoint(struct usb_device *udev, 318 struct usb_host_endpoint *ep); 319 extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); 320 extern int usb_hcd_alloc_bandwidth(struct usb_device *udev, 321 struct usb_host_config *new_config, 322 struct usb_host_interface *old_alt, 323 struct usb_host_interface *new_alt); 324 extern int usb_hcd_get_frame_number(struct usb_device *udev); 325 326 extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, 327 struct device *dev, const char *bus_name); 328 extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd); 329 extern void usb_put_hcd(struct usb_hcd *hcd); 330 extern int usb_add_hcd(struct usb_hcd *hcd, 331 unsigned int irqnum, unsigned long irqflags); 332 extern void usb_remove_hcd(struct usb_hcd *hcd); 333 334 struct platform_device; 335 extern void usb_hcd_platform_shutdown(struct platform_device *dev); 336 337 #ifdef CONFIG_PCI 338 struct pci_dev; 339 struct pci_device_id; 340 extern int usb_hcd_pci_probe(struct pci_dev *dev, 341 const struct pci_device_id *id); 342 extern void usb_hcd_pci_remove(struct pci_dev *dev); 343 extern void usb_hcd_pci_shutdown(struct pci_dev *dev); 344 345 #ifdef CONFIG_PM_SLEEP 346 extern const struct dev_pm_ops usb_hcd_pci_pm_ops; 347 #endif 348 #endif /* CONFIG_PCI */ 349 350 /* pci-ish (pdev null is ok) buffer alloc/mapping support */ 351 int hcd_buffer_create(struct usb_hcd *hcd); 352 void hcd_buffer_destroy(struct usb_hcd *hcd); 353 354 void *hcd_buffer_alloc(struct usb_bus *bus, size_t size, 355 gfp_t mem_flags, dma_addr_t *dma); 356 void hcd_buffer_free(struct usb_bus *bus, size_t size, 357 void *addr, dma_addr_t dma); 358 359 /* generic bus glue, needed for host controllers that don't use PCI */ 360 extern irqreturn_t usb_hcd_irq(int irq, void *__hcd); 361 362 extern void usb_hc_died(struct usb_hcd *hcd); 363 extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); 364 365 /* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */ 366 #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1) 367 #define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep))) 368 #define usb_settoggle(dev, ep, out, bit) \ 369 ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \ 370 ((bit) << (ep))) 371 372 /* -------------------------------------------------------------------------- */ 373 374 /* Enumeration is only for the hub driver, or HCD virtual root hubs */ 375 extern struct usb_device *usb_alloc_dev(struct usb_device *parent, 376 struct usb_bus *, unsigned port); 377 extern int usb_new_device(struct usb_device *dev); 378 extern void usb_disconnect(struct usb_device **); 379 380 extern int usb_get_configuration(struct usb_device *dev); 381 extern void usb_destroy_configuration(struct usb_device *dev); 382 383 /*-------------------------------------------------------------------------*/ 384 385 /* 386 * HCD Root Hub support 387 */ 388 389 #include <linux/usb/ch11.h> 390 391 /* 392 * As of USB 2.0, full/low speed devices are segregated into trees. 393 * One type grows from USB 1.1 host controllers (OHCI, UHCI etc). 394 * The other type grows from high speed hubs when they connect to 395 * full/low speed devices using "Transaction Translators" (TTs). 396 * 397 * TTs should only be known to the hub driver, and high speed bus 398 * drivers (only EHCI for now). They affect periodic scheduling and 399 * sometimes control/bulk error recovery. 400 */ 401 402 struct usb_device; 403 404 struct usb_tt { 405 struct usb_device *hub; /* upstream highspeed hub */ 406 int multi; /* true means one TT per port */ 407 unsigned think_time; /* think time in ns */ 408 409 /* for control/bulk error recovery (CLEAR_TT_BUFFER) */ 410 spinlock_t lock; 411 struct list_head clear_list; /* of usb_tt_clear */ 412 struct work_struct clear_work; 413 }; 414 415 struct usb_tt_clear { 416 struct list_head clear_list; 417 unsigned tt; 418 u16 devinfo; 419 struct usb_hcd *hcd; 420 struct usb_host_endpoint *ep; 421 }; 422 423 extern int usb_hub_clear_tt_buffer(struct urb *urb); 424 extern void usb_ep0_reinit(struct usb_device *); 425 426 /* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */ 427 #define DeviceRequest \ 428 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) 429 #define DeviceOutRequest \ 430 ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) 431 432 #define InterfaceRequest \ 433 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) 434 435 #define EndpointRequest \ 436 ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) 437 #define EndpointOutRequest \ 438 ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) 439 440 /* class requests from the USB 2.0 hub spec, table 11-15 */ 441 /* GetBusState and SetHubDescriptor are optional, omitted */ 442 #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) 443 #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) 444 #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) 445 #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) 446 #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) 447 #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) 448 #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) 449 450 451 /*-------------------------------------------------------------------------*/ 452 453 /* 454 * Generic bandwidth allocation constants/support 455 */ 456 #define FRAME_TIME_USECS 1000L 457 #define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */ 458 /* Trying not to use worst-case bit-stuffing 459 * of (7/6 * 8 * bytecount) = 9.33 * bytecount */ 460 /* bytecount = data payload byte count */ 461 462 #define NS_TO_US(ns) ((ns + 500L) / 1000L) 463 /* convert & round nanoseconds to microseconds */ 464 465 466 /* 467 * Full/low speed bandwidth allocation constants/support. 468 */ 469 #define BW_HOST_DELAY 1000L /* nanoseconds */ 470 #define BW_HUB_LS_SETUP 333L /* nanoseconds */ 471 /* 4 full-speed bit times (est.) */ 472 473 #define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */ 474 #define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L) 475 #define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L) 476 477 /* 478 * Ceiling [nano/micro]seconds (typical) for that many bytes at high speed 479 * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed 480 * to preallocate bandwidth) 481 */ 482 #define USB2_HOST_DELAY 5 /* nsec, guess */ 483 #define HS_NSECS(bytes) (((55 * 8 * 2083) \ 484 + (2083UL * (3 + BitTime(bytes))))/1000 \ 485 + USB2_HOST_DELAY) 486 #define HS_NSECS_ISO(bytes) (((38 * 8 * 2083) \ 487 + (2083UL * (3 + BitTime(bytes))))/1000 \ 488 + USB2_HOST_DELAY) 489 #define HS_USECS(bytes) NS_TO_US(HS_NSECS(bytes)) 490 #define HS_USECS_ISO(bytes) NS_TO_US(HS_NSECS_ISO(bytes)) 491 492 extern long usb_calc_bus_time(int speed, int is_input, 493 int isoc, int bytecount); 494 495 /*-------------------------------------------------------------------------*/ 496 497 extern void usb_set_device_state(struct usb_device *udev, 498 enum usb_device_state new_state); 499 500 /*-------------------------------------------------------------------------*/ 501 502 /* exported only within usbcore */ 503 504 extern struct list_head usb_bus_list; 505 extern struct mutex usb_bus_list_lock; 506 extern wait_queue_head_t usb_kill_urb_queue; 507 508 extern int usb_find_interface_driver(struct usb_device *dev, 509 struct usb_interface *interface); 510 511 #define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) 512 513 #ifdef CONFIG_PM 514 extern void usb_root_hub_lost_power(struct usb_device *rhdev); 515 extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); 516 extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); 517 #endif /* CONFIG_PM */ 518 519 #ifdef CONFIG_USB_SUSPEND 520 extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); 521 #else 522 static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) 523 { 524 return; 525 } 526 #endif /* CONFIG_USB_SUSPEND */ 527 528 529 /* 530 * USB device fs stuff 531 */ 532 533 #ifdef CONFIG_USB_DEVICEFS 534 535 /* 536 * these are expected to be called from the USB core/hub thread 537 * with the kernel lock held 538 */ 539 extern void usbfs_update_special(void); 540 extern int usbfs_init(void); 541 extern void usbfs_cleanup(void); 542 543 #else /* CONFIG_USB_DEVICEFS */ 544 545 static inline void usbfs_update_special(void) {} 546 static inline int usbfs_init(void) { return 0; } 547 static inline void usbfs_cleanup(void) { } 548 549 #endif /* CONFIG_USB_DEVICEFS */ 550 551 /*-------------------------------------------------------------------------*/ 552 553 #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) 554 555 struct usb_mon_operations { 556 void (*urb_submit)(struct usb_bus *bus, struct urb *urb); 557 void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err); 558 void (*urb_complete)(struct usb_bus *bus, struct urb *urb, int status); 559 /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */ 560 }; 561 562 extern struct usb_mon_operations *mon_ops; 563 564 static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) 565 { 566 if (bus->monitored) 567 (*mon_ops->urb_submit)(bus, urb); 568 } 569 570 static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, 571 int error) 572 { 573 if (bus->monitored) 574 (*mon_ops->urb_submit_error)(bus, urb, error); 575 } 576 577 static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, 578 int status) 579 { 580 if (bus->monitored) 581 (*mon_ops->urb_complete)(bus, urb, status); 582 } 583 584 int usb_mon_register(struct usb_mon_operations *ops); 585 void usb_mon_deregister(void); 586 587 #else 588 589 static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {} 590 static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, 591 int error) {} 592 static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, 593 int status) {} 594 595 #endif /* CONFIG_USB_MON || CONFIG_USB_MON_MODULE */ 596 597 /*-------------------------------------------------------------------------*/ 598 599 /* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */ 600 /* bleech -- resurfaced in 2.4.11 or 2.4.12 */ 601 #define bitmap DeviceRemovable 602 603 604 /*-------------------------------------------------------------------------*/ 605 606 /* random stuff */ 607 608 #define RUN_CONTEXT (in_irq() ? "in_irq" \ 609 : (in_interrupt() ? "in_interrupt" : "can sleep")) 610 611 612 /* This rwsem is for use only by the hub driver and ehci-hcd. 613 * Nobody else should touch it. 614 */ 615 extern struct rw_semaphore ehci_cf_port_reset_rwsem; 616 617 /* Keep track of which host controller drivers are loaded */ 618 #define USB_UHCI_LOADED 0 619 #define USB_OHCI_LOADED 1 620 #define USB_EHCI_LOADED 2 621 extern unsigned long usb_hcds_loaded; 622 623 #endif /* __KERNEL__ */ 624 625 #endif /* __USB_CORE_HCD_H */ 626