xref: /openbmc/qemu/include/hw/usb.h (revision 6e2e2e8a)
1 #ifndef QEMU_USB_H
2 #define QEMU_USB_H
3 
4 /*
5  * QEMU USB API
6  *
7  * Copyright (c) 2005 Fabrice Bellard
8  *
9  * Permission is hereby granted, free of charge, to any person obtaining a copy
10  * of this software and associated documentation files (the "Software"), to deal
11  * in the Software without restriction, including without limitation the rights
12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13  * copies of the Software, and to permit persons to whom the Software is
14  * furnished to do so, subject to the following conditions:
15  *
16  * The above copyright notice and this permission notice shall be included in
17  * all copies or substantial portions of the Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25  * THE SOFTWARE.
26  */
27 
28 #include "exec/memory.h"
29 #include "hw/qdev-core.h"
30 #include "qemu/iov.h"
31 #include "qemu/queue.h"
32 #include "qom/object.h"
33 
34 /* Constants related to the USB / PCI interaction */
35 #define USB_SBRN    0x60 /* Serial Bus Release Number Register */
36 #define USB_RELEASE_1  0x10 /* USB 1.0 */
37 #define USB_RELEASE_2  0x20 /* USB 2.0 */
38 #define USB_RELEASE_3  0x30 /* USB 3.0 */
39 
40 #define USB_TOKEN_SETUP 0x2d
41 #define USB_TOKEN_IN    0x69 /* device -> host */
42 #define USB_TOKEN_OUT   0xe1 /* host -> device */
43 
44 #define USB_RET_SUCCESS           (0)
45 #define USB_RET_NODEV             (-1)
46 #define USB_RET_NAK               (-2)
47 #define USB_RET_STALL             (-3)
48 #define USB_RET_BABBLE            (-4)
49 #define USB_RET_IOERROR           (-5)
50 #define USB_RET_ASYNC             (-6)
51 #define USB_RET_ADD_TO_QUEUE      (-7)
52 #define USB_RET_REMOVE_FROM_QUEUE (-8)
53 
54 #define USB_SPEED_LOW   0
55 #define USB_SPEED_FULL  1
56 #define USB_SPEED_HIGH  2
57 #define USB_SPEED_SUPER 3
58 
59 #define USB_SPEED_MASK_LOW   (1 << USB_SPEED_LOW)
60 #define USB_SPEED_MASK_FULL  (1 << USB_SPEED_FULL)
61 #define USB_SPEED_MASK_HIGH  (1 << USB_SPEED_HIGH)
62 #define USB_SPEED_MASK_SUPER (1 << USB_SPEED_SUPER)
63 
64 #define USB_STATE_NOTATTACHED 0
65 #define USB_STATE_ATTACHED    1
66 //#define USB_STATE_POWERED     2
67 #define USB_STATE_DEFAULT     3
68 //#define USB_STATE_ADDRESS     4
69 //#define	USB_STATE_CONFIGURED  5
70 #define USB_STATE_SUSPENDED   6
71 
72 #define USB_CLASS_AUDIO			1
73 #define USB_CLASS_COMM			2
74 #define USB_CLASS_HID			3
75 #define USB_CLASS_PHYSICAL		5
76 #define USB_CLASS_STILL_IMAGE		6
77 #define USB_CLASS_PRINTER		7
78 #define USB_CLASS_MASS_STORAGE		8
79 #define USB_CLASS_HUB			9
80 #define USB_CLASS_CDC_DATA		0x0a
81 #define USB_CLASS_CSCID			0x0b
82 #define USB_CLASS_CONTENT_SEC		0x0d
83 #define USB_CLASS_APP_SPEC		0xfe
84 #define USB_CLASS_VENDOR_SPEC		0xff
85 
86 #define USB_SUBCLASS_UNDEFINED          0
87 #define USB_SUBCLASS_AUDIO_CONTROL      1
88 #define USB_SUBCLASS_AUDIO_STREAMING    2
89 #define USB_SUBCLASS_AUDIO_MIDISTREAMING 3
90 
91 #define USB_DIR_OUT			0
92 #define USB_DIR_IN			0x80
93 
94 #define USB_TYPE_MASK			(0x03 << 5)
95 #define USB_TYPE_STANDARD		(0x00 << 5)
96 #define USB_TYPE_CLASS			(0x01 << 5)
97 #define USB_TYPE_VENDOR			(0x02 << 5)
98 #define USB_TYPE_RESERVED		(0x03 << 5)
99 
100 #define USB_RECIP_MASK			0x1f
101 #define USB_RECIP_DEVICE		0x00
102 #define USB_RECIP_INTERFACE		0x01
103 #define USB_RECIP_ENDPOINT		0x02
104 #define USB_RECIP_OTHER			0x03
105 
106 #define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
107 #define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
108 #define VendorDeviceRequest ((USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
109 #define VendorDeviceOutRequest \
110         ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
111 
112 #define InterfaceRequest                                        \
113         ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
114 #define InterfaceOutRequest \
115         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
116 #define ClassInterfaceRequest \
117         ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
118 #define ClassInterfaceOutRequest \
119         ((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
120 #define VendorInterfaceRequest \
121         ((USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_INTERFACE)<<8)
122 #define VendorInterfaceOutRequest \
123         ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE)<<8)
124 
125 #define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
126 #define EndpointOutRequest \
127         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
128 
129 #define USB_REQ_GET_STATUS		0x00
130 #define USB_REQ_CLEAR_FEATURE		0x01
131 #define USB_REQ_SET_FEATURE		0x03
132 #define USB_REQ_SET_ADDRESS		0x05
133 #define USB_REQ_GET_DESCRIPTOR		0x06
134 #define USB_REQ_SET_DESCRIPTOR		0x07
135 #define USB_REQ_GET_CONFIGURATION	0x08
136 #define USB_REQ_SET_CONFIGURATION	0x09
137 #define USB_REQ_GET_INTERFACE		0x0A
138 #define USB_REQ_SET_INTERFACE		0x0B
139 #define USB_REQ_SYNCH_FRAME		0x0C
140 #define USB_REQ_SET_SEL                 0x30
141 #define USB_REQ_SET_ISOCH_DELAY         0x31
142 
143 #define USB_DEVICE_SELF_POWERED		0
144 #define USB_DEVICE_REMOTE_WAKEUP	1
145 
146 #define USB_DT_DEVICE			0x01
147 #define USB_DT_CONFIG			0x02
148 #define USB_DT_STRING			0x03
149 #define USB_DT_INTERFACE		0x04
150 #define USB_DT_ENDPOINT			0x05
151 #define USB_DT_DEVICE_QUALIFIER         0x06
152 #define USB_DT_OTHER_SPEED_CONFIG       0x07
153 #define USB_DT_DEBUG                    0x0A
154 #define USB_DT_INTERFACE_ASSOC          0x0B
155 #define USB_DT_BOS                      0x0F
156 #define USB_DT_DEVICE_CAPABILITY        0x10
157 #define USB_DT_CS_INTERFACE             0x24
158 #define USB_DT_CS_ENDPOINT              0x25
159 #define USB_DT_ENDPOINT_COMPANION       0x30
160 
161 #define USB_DEV_CAP_WIRELESS            0x01
162 #define USB_DEV_CAP_USB2_EXT            0x02
163 #define USB_DEV_CAP_SUPERSPEED          0x03
164 
165 #define USB_CFG_ATT_ONE              (1 << 7) /* should always be set */
166 #define USB_CFG_ATT_SELFPOWER        (1 << 6)
167 #define USB_CFG_ATT_WAKEUP           (1 << 5)
168 #define USB_CFG_ATT_BATTERY          (1 << 4)
169 
170 #define USB_ENDPOINT_XFER_CONTROL	0
171 #define USB_ENDPOINT_XFER_ISOC		1
172 #define USB_ENDPOINT_XFER_BULK		2
173 #define USB_ENDPOINT_XFER_INT		3
174 #define USB_ENDPOINT_XFER_INVALID     255
175 
176 #define USB_INTERFACE_INVALID         255
177 
178 typedef struct USBBusOps USBBusOps;
179 typedef struct USBPort USBPort;
180 typedef struct USBDevice USBDevice;
181 typedef struct USBPacket USBPacket;
182 typedef struct USBCombinedPacket USBCombinedPacket;
183 typedef struct USBEndpoint USBEndpoint;
184 
185 typedef struct USBDesc USBDesc;
186 typedef struct USBDescID USBDescID;
187 typedef struct USBDescDevice USBDescDevice;
188 typedef struct USBDescConfig USBDescConfig;
189 typedef struct USBDescIfaceAssoc USBDescIfaceAssoc;
190 typedef struct USBDescIface USBDescIface;
191 typedef struct USBDescEndpoint USBDescEndpoint;
192 typedef struct USBDescOther USBDescOther;
193 typedef struct USBDescString USBDescString;
194 typedef struct USBDescMSOS USBDescMSOS;
195 
196 struct USBDescString {
197     uint8_t index;
198     char *str;
199     QLIST_ENTRY(USBDescString) next;
200 };
201 
202 #define USB_MAX_ENDPOINTS  15
203 #define USB_MAX_INTERFACES 16
204 
205 struct USBEndpoint {
206     uint8_t nr;
207     uint8_t pid;
208     uint8_t type;
209     uint8_t ifnum;
210     int max_packet_size;
211     int max_streams;
212     bool pipeline;
213     bool halted;
214     USBDevice *dev;
215     QTAILQ_HEAD(, USBPacket) queue;
216 };
217 
218 enum USBDeviceFlags {
219     USB_DEV_FLAG_FULL_PATH,
220     USB_DEV_FLAG_IS_HOST,
221     USB_DEV_FLAG_MSOS_DESC_ENABLE,
222     USB_DEV_FLAG_MSOS_DESC_IN_USE,
223 };
224 
225 /* definition of a USB device */
226 struct USBDevice {
227     DeviceState qdev;
228     USBPort *port;
229     char *port_path;
230     char *serial;
231     void *opaque;
232     uint32_t flags;
233 
234     /* Actual connected speed */
235     int speed;
236     /* Supported speeds, not in info because it may be variable (hostdevs) */
237     int speedmask;
238     uint8_t addr;
239     char product_desc[32];
240     int auto_attach;
241     bool attached;
242 
243     int32_t state;
244     uint8_t setup_buf[8];
245     uint8_t data_buf[4096];
246     int32_t remote_wakeup;
247     int32_t setup_state;
248     int32_t setup_len;
249     int32_t setup_index;
250 
251     USBEndpoint ep_ctl;
252     USBEndpoint ep_in[USB_MAX_ENDPOINTS];
253     USBEndpoint ep_out[USB_MAX_ENDPOINTS];
254 
255     QLIST_HEAD(, USBDescString) strings;
256     const USBDesc *usb_desc; /* Overrides class usb_desc if not NULL */
257     const USBDescDevice *device;
258 
259     int configuration;
260     int ninterfaces;
261     int altsetting[USB_MAX_INTERFACES];
262     const USBDescConfig *config;
263     const USBDescIface  *ifaces[USB_MAX_INTERFACES];
264 };
265 
266 #define TYPE_USB_DEVICE "usb-device"
267 OBJECT_DECLARE_TYPE(USBDevice, USBDeviceClass, USB_DEVICE)
268 
269 typedef void (*USBDeviceRealize)(USBDevice *dev, Error **errp);
270 typedef void (*USBDeviceUnrealize)(USBDevice *dev);
271 
272 struct USBDeviceClass {
273     DeviceClass parent_class;
274 
275     USBDeviceRealize realize;
276     USBDeviceUnrealize unrealize;
277 
278     /*
279      * Walk (enabled) downstream ports, check for a matching device.
280      * Only hubs implement this.
281      */
282     USBDevice *(*find_device)(USBDevice *dev, uint8_t addr);
283 
284     /*
285      * Called when a packet is canceled.
286      */
287     void (*cancel_packet)(USBDevice *dev, USBPacket *p);
288 
289     /*
290      * Attach the device
291      */
292     void (*handle_attach)(USBDevice *dev);
293 
294     /*
295      * Reset the device
296      */
297     void (*handle_reset)(USBDevice *dev);
298 
299     /*
300      * Process control request.
301      * Called from handle_packet().
302      *
303      * Status gets stored in p->status, and if p->status == USB_RET_SUCCESS
304      * then the number of bytes transferred is stored in p->actual_length
305      */
306     void (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value,
307                            int index, int length, uint8_t *data);
308 
309     /*
310      * Process data transfers (both BULK and ISOC).
311      * Called from handle_packet().
312      *
313      * Status gets stored in p->status, and if p->status == USB_RET_SUCCESS
314      * then the number of bytes transferred is stored in p->actual_length
315      */
316     void (*handle_data)(USBDevice *dev, USBPacket *p);
317 
318     void (*set_interface)(USBDevice *dev, int interface,
319                           int alt_old, int alt_new);
320 
321     /*
322      * Called when the hcd is done queuing packets for an endpoint, only
323      * necessary for devices which can return USB_RET_ADD_TO_QUEUE.
324      */
325     void (*flush_ep_queue)(USBDevice *dev, USBEndpoint *ep);
326 
327     /*
328      * Called by the hcd to let the device know the queue for an endpoint
329      * has been unlinked / stopped. Optional may be NULL.
330      */
331     void (*ep_stopped)(USBDevice *dev, USBEndpoint *ep);
332 
333     /*
334      * Called by the hcd to alloc / free streams on a bulk endpoint.
335      * Optional may be NULL.
336      */
337     int (*alloc_streams)(USBDevice *dev, USBEndpoint **eps, int nr_eps,
338                          int streams);
339     void (*free_streams)(USBDevice *dev, USBEndpoint **eps, int nr_eps);
340 
341     const char *product_desc;
342     const USBDesc *usb_desc;
343     bool attached_settable;
344 };
345 
346 typedef struct USBPortOps {
347     void (*attach)(USBPort *port);
348     void (*detach)(USBPort *port);
349     /*
350      * This gets called when a device downstream from the device attached to
351      * the port (iow attached through a hub) gets detached.
352      */
353     void (*child_detach)(USBPort *port, USBDevice *child);
354     void (*wakeup)(USBPort *port);
355     /*
356      * Note that port->dev will be different then the device from which
357      * the packet originated when a hub is involved.
358      */
359     void (*complete)(USBPort *port, USBPacket *p);
360 } USBPortOps;
361 
362 /* USB port on which a device can be connected */
363 struct USBPort {
364     USBDevice *dev;
365     int speedmask;
366     int hubcount;
367     char path[16];
368     USBPortOps *ops;
369     void *opaque;
370     int index; /* internal port index, may be used with the opaque */
371     QTAILQ_ENTRY(USBPort) next;
372 };
373 
374 typedef void USBCallback(USBPacket * packet, void *opaque);
375 
376 typedef enum USBPacketState {
377     USB_PACKET_UNDEFINED = 0,
378     USB_PACKET_SETUP,
379     USB_PACKET_QUEUED,
380     USB_PACKET_ASYNC,
381     USB_PACKET_COMPLETE,
382     USB_PACKET_CANCELED,
383 } USBPacketState;
384 
385 /* Structure used to hold information about an active USB packet.  */
386 struct USBPacket {
387     /* Data fields for use by the driver.  */
388     int pid;
389     uint64_t id;
390     USBEndpoint *ep;
391     unsigned int stream;
392     QEMUIOVector iov;
393     uint64_t parameter; /* control transfers */
394     bool short_not_ok;
395     bool int_req;
396     int status; /* USB_RET_* status code */
397     int actual_length; /* Number of bytes actually transferred */
398     /* Internal use by the USB layer.  */
399     USBPacketState state;
400     USBCombinedPacket *combined;
401     QTAILQ_ENTRY(USBPacket) queue;
402     QTAILQ_ENTRY(USBPacket) combined_entry;
403 };
404 
405 struct USBCombinedPacket {
406     USBPacket *first;
407     QTAILQ_HEAD(, USBPacket) packets;
408     QEMUIOVector iov;
409 };
410 
411 void usb_packet_init(USBPacket *p);
412 void usb_packet_set_state(USBPacket *p, USBPacketState state);
413 void usb_packet_check_state(USBPacket *p, USBPacketState expected);
414 void usb_packet_setup(USBPacket *p, int pid,
415                       USBEndpoint *ep, unsigned int stream,
416                       uint64_t id, bool short_not_ok, bool int_req);
417 void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len);
418 int usb_packet_map(USBPacket *p, QEMUSGList *sgl);
419 void usb_packet_unmap(USBPacket *p, QEMUSGList *sgl);
420 void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes);
421 void usb_packet_skip(USBPacket *p, size_t bytes);
422 size_t usb_packet_size(USBPacket *p);
423 void usb_packet_cleanup(USBPacket *p);
424 
425 static inline bool usb_packet_is_inflight(USBPacket *p)
426 {
427     return (p->state == USB_PACKET_QUEUED ||
428             p->state == USB_PACKET_ASYNC);
429 }
430 
431 USBDevice *usb_find_device(USBPort *port, uint8_t addr);
432 
433 void usb_handle_packet(USBDevice *dev, USBPacket *p);
434 void usb_packet_complete(USBDevice *dev, USBPacket *p);
435 void usb_packet_complete_one(USBDevice *dev, USBPacket *p);
436 void usb_cancel_packet(USBPacket * p);
437 
438 void usb_ep_init(USBDevice *dev);
439 void usb_ep_reset(USBDevice *dev);
440 void usb_ep_dump(USBDevice *dev);
441 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep);
442 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep);
443 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type);
444 void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum);
445 void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,
446                                 uint16_t raw);
447 void usb_ep_set_max_streams(USBDevice *dev, int pid, int ep, uint8_t raw);
448 void usb_ep_set_halted(USBDevice *dev, int pid, int ep, bool halted);
449 USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
450                                     uint64_t id);
451 
452 void usb_ep_combine_input_packets(USBEndpoint *ep);
453 void usb_combined_input_packet_complete(USBDevice *dev, USBPacket *p);
454 void usb_combined_packet_cancel(USBDevice *dev, USBPacket *p);
455 
456 void usb_pick_speed(USBPort *port);
457 void usb_attach(USBPort *port);
458 void usb_detach(USBPort *port);
459 void usb_port_reset(USBPort *port);
460 void usb_device_reset(USBDevice *dev);
461 void usb_wakeup(USBEndpoint *ep, unsigned int stream);
462 void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p);
463 
464 /* usb-linux.c */
465 void hmp_info_usbhost(Monitor *mon, const QDict *qdict);
466 bool usb_host_dev_is_scsi_storage(USBDevice *usbdev);
467 
468 /* usb ports of the VM */
469 
470 #define VM_USB_HUB_SIZE 8
471 
472 /* usb-bus.c */
473 
474 #define TYPE_USB_BUS "usb-bus"
475 OBJECT_DECLARE_SIMPLE_TYPE(USBBus, USB_BUS)
476 
477 struct USBBus {
478     BusState qbus;
479     USBBusOps *ops;
480     int busnr;
481     int nfree;
482     int nused;
483     QTAILQ_HEAD(, USBPort) free;
484     QTAILQ_HEAD(, USBPort) used;
485     QTAILQ_ENTRY(USBBus) next;
486 };
487 
488 struct USBBusOps {
489     void (*register_companion)(USBBus *bus, USBPort *ports[],
490                                uint32_t portcount, uint32_t firstport,
491                                Error **errp);
492     void (*wakeup_endpoint)(USBBus *bus, USBEndpoint *ep, unsigned int stream);
493 };
494 
495 void usb_bus_new(USBBus *bus, size_t bus_size,
496                  USBBusOps *ops, DeviceState *host);
497 void usb_bus_release(USBBus *bus);
498 USBBus *usb_bus_find(int busnr);
499 void usb_legacy_register(const char *typename, const char *usbdevice_name,
500                          USBDevice *(*usbdevice_init)(const char *params));
501 USBDevice *usb_new(const char *name);
502 bool usb_realize_and_unref(USBDevice *dev, USBBus *bus, Error **errp);
503 USBDevice *usb_create_simple(USBBus *bus, const char *name);
504 USBDevice *usbdevice_create(const char *cmdline);
505 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
506                        USBPortOps *ops, int speedmask);
507 void usb_register_companion(const char *masterbus, USBPort *ports[],
508                             uint32_t portcount, uint32_t firstport,
509                             void *opaque, USBPortOps *ops, int speedmask,
510                             Error **errp);
511 void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr);
512 void usb_unregister_port(USBBus *bus, USBPort *port);
513 void usb_claim_port(USBDevice *dev, Error **errp);
514 void usb_release_port(USBDevice *dev);
515 void usb_device_attach(USBDevice *dev, Error **errp);
516 int usb_device_detach(USBDevice *dev);
517 void usb_check_attach(USBDevice *dev, Error **errp);
518 
519 static inline USBBus *usb_bus_from_device(USBDevice *d)
520 {
521     return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);
522 }
523 
524 extern const VMStateDescription vmstate_usb_device;
525 
526 #define VMSTATE_USB_DEVICE(_field, _state) {                         \
527     .name       = (stringify(_field)),                               \
528     .size       = sizeof(USBDevice),                                 \
529     .vmsd       = &vmstate_usb_device,                               \
530     .flags      = VMS_STRUCT,                                        \
531     .offset     = vmstate_offset_value(_state, _field, USBDevice),   \
532 }
533 
534 USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr);
535 
536 void usb_device_cancel_packet(USBDevice *dev, USBPacket *p);
537 
538 void usb_device_handle_attach(USBDevice *dev);
539 
540 void usb_device_handle_reset(USBDevice *dev);
541 
542 void usb_device_handle_control(USBDevice *dev, USBPacket *p, int request,
543                                int val, int index, int length, uint8_t *data);
544 
545 void usb_device_handle_data(USBDevice *dev, USBPacket *p);
546 
547 void usb_device_set_interface(USBDevice *dev, int interface,
548                               int alt_old, int alt_new);
549 
550 void usb_device_flush_ep_queue(USBDevice *dev, USBEndpoint *ep);
551 
552 void usb_device_ep_stopped(USBDevice *dev, USBEndpoint *ep);
553 
554 int usb_device_alloc_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps,
555                              int streams);
556 void usb_device_free_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps);
557 
558 const char *usb_device_get_product_desc(USBDevice *dev);
559 
560 const USBDesc *usb_device_get_usb_desc(USBDevice *dev);
561 
562 /* quirks.c */
563 
564 /* In bulk endpoints are streaming data sources (iow behave like isoc eps) */
565 #define USB_QUIRK_BUFFER_BULK_IN	0x01
566 /* Bulk pkts in FTDI format, need special handling when combining packets */
567 #define USB_QUIRK_IS_FTDI		0x02
568 
569 int usb_get_quirks(uint16_t vendor_id, uint16_t product_id,
570                    uint8_t interface_class, uint8_t interface_subclass,
571                    uint8_t interface_protocol);
572 
573 #endif
574