Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dummy_hcd.c -- Dummy/Loopback USB host and device emulator driver. | |
3 | * | |
4 | * Maintainer: Alan Stern <stern@rowland.harvard.edu> | |
5 | * | |
6 | * Copyright (C) 2003 David Brownell | |
7 | * Copyright (C) 2003-2005 Alan Stern | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
1da177e4 LT |
13 | */ |
14 | ||
15 | ||
16 | /* | |
17 | * This exposes a device side "USB gadget" API, driven by requests to a | |
18 | * Linux-USB host controller driver. USB traffic is simulated; there's | |
19 | * no need for USB hardware. Use this with two other drivers: | |
20 | * | |
21 | * - Gadget driver, responding to requests (slave); | |
22 | * - Host-side device driver, as already familiar in Linux. | |
23 | * | |
24 | * Having this all in one kernel can help some stages of development, | |
25 | * bypassing some hardware (and driver) issues. UML could help too. | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/kernel.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/ioport.h> | |
1da177e4 | 32 | #include <linux/slab.h> |
1da177e4 LT |
33 | #include <linux/errno.h> |
34 | #include <linux/init.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/list.h> | |
37 | #include <linux/interrupt.h> | |
d052d1be | 38 | #include <linux/platform_device.h> |
1da177e4 | 39 | #include <linux/usb.h> |
9454a57a | 40 | #include <linux/usb/gadget.h> |
27729aad | 41 | #include <linux/usb/hcd.h> |
1da177e4 LT |
42 | |
43 | #include <asm/byteorder.h> | |
44 | #include <asm/io.h> | |
45 | #include <asm/irq.h> | |
46 | #include <asm/system.h> | |
47 | #include <asm/unaligned.h> | |
48 | ||
49 | ||
1da177e4 | 50 | #define DRIVER_DESC "USB Host+Gadget Emulator" |
391eca9d | 51 | #define DRIVER_VERSION "02 May 2005" |
1da177e4 | 52 | |
caf29f62 AS |
53 | #define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ |
54 | ||
1da177e4 LT |
55 | static const char driver_name [] = "dummy_hcd"; |
56 | static const char driver_desc [] = "USB Host+Gadget Emulator"; | |
57 | ||
58 | static const char gadget_name [] = "dummy_udc"; | |
59 | ||
60 | MODULE_DESCRIPTION (DRIVER_DESC); | |
61 | MODULE_AUTHOR ("David Brownell"); | |
62 | MODULE_LICENSE ("GPL"); | |
63 | ||
1cd8fd28 TB |
64 | struct dummy_hcd_module_parameters { |
65 | bool is_super_speed; | |
7eca4c5a | 66 | bool is_high_speed; |
1cd8fd28 TB |
67 | }; |
68 | ||
69 | static struct dummy_hcd_module_parameters mod_data = { | |
7eca4c5a TB |
70 | .is_super_speed = false, |
71 | .is_high_speed = true, | |
1cd8fd28 TB |
72 | }; |
73 | module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); | |
74 | MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); | |
7eca4c5a TB |
75 | module_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); |
76 | MODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); | |
1da177e4 LT |
77 | /*-------------------------------------------------------------------------*/ |
78 | ||
79 | /* gadget side driver data structres */ | |
80 | struct dummy_ep { | |
81 | struct list_head queue; | |
82 | unsigned long last_io; /* jiffies timestamp */ | |
83 | struct usb_gadget *gadget; | |
84 | const struct usb_endpoint_descriptor *desc; | |
85 | struct usb_ep ep; | |
86 | unsigned halted : 1; | |
851a526d | 87 | unsigned wedged : 1; |
1da177e4 LT |
88 | unsigned already_seen : 1; |
89 | unsigned setup_stage : 1; | |
90 | }; | |
91 | ||
92 | struct dummy_request { | |
93 | struct list_head queue; /* ep's requests */ | |
94 | struct usb_request req; | |
95 | }; | |
96 | ||
97 | static inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) | |
98 | { | |
99 | return container_of (_ep, struct dummy_ep, ep); | |
100 | } | |
101 | ||
102 | static inline struct dummy_request *usb_request_to_dummy_request | |
103 | (struct usb_request *_req) | |
104 | { | |
105 | return container_of (_req, struct dummy_request, req); | |
106 | } | |
107 | ||
108 | /*-------------------------------------------------------------------------*/ | |
109 | ||
110 | /* | |
111 | * Every device has ep0 for control requests, plus up to 30 more endpoints, | |
112 | * in one of two types: | |
113 | * | |
114 | * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint | |
115 | * number can be changed. Names like "ep-a" are used for this type. | |
116 | * | |
117 | * - Fixed Function: in other cases. some characteristics may be mutable; | |
118 | * that'd be hardware-specific. Names like "ep12out-bulk" are used. | |
119 | * | |
120 | * Gadget drivers are responsible for not setting up conflicting endpoint | |
121 | * configurations, illegal or unsupported packet lengths, and so on. | |
122 | */ | |
123 | ||
124 | static const char ep0name [] = "ep0"; | |
125 | ||
126 | static const char *const ep_name [] = { | |
127 | ep0name, /* everyone has ep0 */ | |
128 | ||
129 | /* act like a net2280: high speed, six configurable endpoints */ | |
130 | "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", | |
131 | ||
132 | /* or like pxa250: fifteen fixed function endpoints */ | |
133 | "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", | |
134 | "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", | |
135 | "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", | |
136 | "ep15in-int", | |
137 | ||
138 | /* or like sa1100: two fixed function endpoints */ | |
139 | "ep1out-bulk", "ep2in-bulk", | |
140 | }; | |
52950ed4 | 141 | #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) |
1da177e4 | 142 | |
d9b76251 AS |
143 | /*-------------------------------------------------------------------------*/ |
144 | ||
1da177e4 LT |
145 | #define FIFO_SIZE 64 |
146 | ||
147 | struct urbp { | |
148 | struct urb *urb; | |
149 | struct list_head urbp_list; | |
150 | }; | |
151 | ||
391eca9d AS |
152 | |
153 | enum dummy_rh_state { | |
154 | DUMMY_RH_RESET, | |
155 | DUMMY_RH_SUSPENDED, | |
156 | DUMMY_RH_RUNNING | |
157 | }; | |
158 | ||
cdfcbd2c TB |
159 | struct dummy_hcd { |
160 | struct dummy *dum; | |
161 | enum dummy_rh_state rh_state; | |
162 | struct timer_list timer; | |
163 | u32 port_status; | |
164 | u32 old_status; | |
165 | unsigned long re_timeout; | |
166 | ||
167 | struct usb_device *udev; | |
168 | struct list_head urbp_list; | |
169 | ||
170 | unsigned active:1; | |
171 | unsigned old_active:1; | |
172 | unsigned resuming:1; | |
173 | }; | |
174 | ||
1da177e4 LT |
175 | struct dummy { |
176 | spinlock_t lock; | |
177 | ||
178 | /* | |
179 | * SLAVE/GADGET side support | |
180 | */ | |
181 | struct dummy_ep ep [DUMMY_ENDPOINTS]; | |
182 | int address; | |
183 | struct usb_gadget gadget; | |
184 | struct usb_gadget_driver *driver; | |
185 | struct dummy_request fifo_req; | |
186 | u8 fifo_buf [FIFO_SIZE]; | |
187 | u16 devstatus; | |
391eca9d | 188 | unsigned udc_suspended:1; |
f1c39fad | 189 | unsigned pullup:1; |
1da177e4 LT |
190 | |
191 | /* | |
192 | * MASTER/HOST side support | |
193 | */ | |
cdfcbd2c | 194 | struct dummy_hcd *hs_hcd; |
1cd8fd28 | 195 | struct dummy_hcd *ss_hcd; |
1da177e4 LT |
196 | }; |
197 | ||
cdfcbd2c | 198 | static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) |
1da177e4 | 199 | { |
cdfcbd2c | 200 | return (struct dummy_hcd *) (hcd->hcd_priv); |
1da177e4 LT |
201 | } |
202 | ||
cdfcbd2c | 203 | static inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) |
1da177e4 LT |
204 | { |
205 | return container_of((void *) dum, struct usb_hcd, hcd_priv); | |
206 | } | |
207 | ||
cdfcbd2c | 208 | static inline struct device *dummy_dev(struct dummy_hcd *dum) |
1da177e4 | 209 | { |
cdfcbd2c | 210 | return dummy_hcd_to_hcd(dum)->self.controller; |
1da177e4 LT |
211 | } |
212 | ||
d9b76251 AS |
213 | static inline struct device *udc_dev (struct dummy *dum) |
214 | { | |
215 | return dum->gadget.dev.parent; | |
216 | } | |
217 | ||
1da177e4 LT |
218 | static inline struct dummy *ep_to_dummy (struct dummy_ep *ep) |
219 | { | |
220 | return container_of (ep->gadget, struct dummy, gadget); | |
221 | } | |
222 | ||
cdfcbd2c | 223 | static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) |
1da177e4 | 224 | { |
cdfcbd2c | 225 | struct dummy *dum = container_of(gadget, struct dummy, gadget); |
1cd8fd28 TB |
226 | if (dum->gadget.speed == USB_SPEED_SUPER) |
227 | return dum->ss_hcd; | |
228 | else | |
229 | return dum->hs_hcd; | |
1da177e4 LT |
230 | } |
231 | ||
232 | static inline struct dummy *gadget_dev_to_dummy (struct device *dev) | |
233 | { | |
234 | return container_of (dev, struct dummy, gadget.dev); | |
235 | } | |
236 | ||
cdfcbd2c | 237 | static struct dummy the_controller; |
1da177e4 LT |
238 | |
239 | /*-------------------------------------------------------------------------*/ | |
240 | ||
f1c39fad AS |
241 | /* SLAVE/GADGET SIDE UTILITY ROUTINES */ |
242 | ||
243 | /* called with spinlock held */ | |
244 | static void nuke (struct dummy *dum, struct dummy_ep *ep) | |
245 | { | |
246 | while (!list_empty (&ep->queue)) { | |
247 | struct dummy_request *req; | |
248 | ||
249 | req = list_entry (ep->queue.next, struct dummy_request, queue); | |
250 | list_del_init (&req->queue); | |
251 | req->req.status = -ESHUTDOWN; | |
252 | ||
253 | spin_unlock (&dum->lock); | |
254 | req->req.complete (&ep->ep, &req->req); | |
255 | spin_lock (&dum->lock); | |
256 | } | |
257 | } | |
258 | ||
259 | /* caller must hold lock */ | |
260 | static void | |
261 | stop_activity (struct dummy *dum) | |
262 | { | |
263 | struct dummy_ep *ep; | |
264 | ||
265 | /* prevent any more requests */ | |
266 | dum->address = 0; | |
267 | ||
268 | /* The timer is left running so that outstanding URBs can fail */ | |
269 | ||
270 | /* nuke any pending requests first, so driver i/o is quiesced */ | |
271 | list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) | |
272 | nuke (dum, ep); | |
273 | ||
274 | /* driver now does any non-usb quiescing necessary */ | |
275 | } | |
276 | ||
1cd8fd28 TB |
277 | /** |
278 | * set_link_state_by_speed() - Sets the current state of the link according to | |
279 | * the hcd speed | |
280 | * @dum_hcd: pointer to the dummy_hcd structure to update the link state for | |
281 | * | |
282 | * This function updates the port_status according to the link state and the | |
283 | * speed of the hcd. | |
284 | */ | |
285 | static void set_link_state_by_speed(struct dummy_hcd *dum_hcd) | |
286 | { | |
287 | struct dummy *dum = dum_hcd->dum; | |
288 | ||
289 | if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { | |
290 | if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { | |
291 | dum_hcd->port_status = 0; | |
292 | } else if (!dum->pullup || dum->udc_suspended) { | |
293 | /* UDC suspend must cause a disconnect */ | |
294 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
295 | USB_PORT_STAT_ENABLE); | |
296 | if ((dum_hcd->old_status & | |
297 | USB_PORT_STAT_CONNECTION) != 0) | |
298 | dum_hcd->port_status |= | |
299 | (USB_PORT_STAT_C_CONNECTION << 16); | |
300 | } else { | |
301 | /* device is connected and not suspended */ | |
302 | dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | | |
303 | USB_PORT_STAT_SPEED_5GBPS) ; | |
304 | if ((dum_hcd->old_status & | |
305 | USB_PORT_STAT_CONNECTION) == 0) | |
306 | dum_hcd->port_status |= | |
307 | (USB_PORT_STAT_C_CONNECTION << 16); | |
308 | if ((dum_hcd->port_status & | |
309 | USB_PORT_STAT_ENABLE) == 1 && | |
310 | (dum_hcd->port_status & | |
311 | USB_SS_PORT_LS_U0) == 1 && | |
312 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
313 | dum_hcd->active = 1; | |
314 | } | |
315 | } else { | |
316 | if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { | |
317 | dum_hcd->port_status = 0; | |
318 | } else if (!dum->pullup || dum->udc_suspended) { | |
319 | /* UDC suspend must cause a disconnect */ | |
320 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
321 | USB_PORT_STAT_ENABLE | | |
322 | USB_PORT_STAT_LOW_SPEED | | |
323 | USB_PORT_STAT_HIGH_SPEED | | |
324 | USB_PORT_STAT_SUSPEND); | |
325 | if ((dum_hcd->old_status & | |
326 | USB_PORT_STAT_CONNECTION) != 0) | |
327 | dum_hcd->port_status |= | |
328 | (USB_PORT_STAT_C_CONNECTION << 16); | |
329 | } else { | |
330 | dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; | |
331 | if ((dum_hcd->old_status & | |
332 | USB_PORT_STAT_CONNECTION) == 0) | |
333 | dum_hcd->port_status |= | |
334 | (USB_PORT_STAT_C_CONNECTION << 16); | |
335 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) | |
336 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
337 | else if ((dum_hcd->port_status & | |
338 | USB_PORT_STAT_SUSPEND) == 0 && | |
339 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
340 | dum_hcd->active = 1; | |
341 | } | |
342 | } | |
343 | } | |
344 | ||
f1c39fad | 345 | /* caller must hold lock */ |
cdfcbd2c | 346 | static void set_link_state(struct dummy_hcd *dum_hcd) |
f1c39fad | 347 | { |
cdfcbd2c TB |
348 | struct dummy *dum = dum_hcd->dum; |
349 | ||
350 | dum_hcd->active = 0; | |
1cd8fd28 TB |
351 | if (dum->pullup) |
352 | if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && | |
353 | dum->gadget.speed != USB_SPEED_SUPER) || | |
354 | (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && | |
355 | dum->gadget.speed == USB_SPEED_SUPER)) | |
356 | return; | |
357 | ||
358 | set_link_state_by_speed(dum_hcd); | |
f1c39fad | 359 | |
cdfcbd2c TB |
360 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || |
361 | dum_hcd->active) | |
362 | dum_hcd->resuming = 0; | |
f1c39fad | 363 | |
1cd8fd28 | 364 | /* if !connected or reset */ |
cdfcbd2c TB |
365 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || |
366 | (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { | |
1cd8fd28 TB |
367 | /* |
368 | * We're connected and not reset (reset occurred now), | |
369 | * and driver attached - disconnect! | |
370 | */ | |
cdfcbd2c | 371 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && |
1cd8fd28 TB |
372 | (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && |
373 | dum->driver) { | |
374 | stop_activity(dum); | |
375 | spin_unlock(&dum->lock); | |
376 | dum->driver->disconnect(&dum->gadget); | |
377 | spin_lock(&dum->lock); | |
f1c39fad | 378 | } |
cdfcbd2c TB |
379 | } else if (dum_hcd->active != dum_hcd->old_active) { |
380 | if (dum_hcd->old_active && dum->driver->suspend) { | |
1cd8fd28 TB |
381 | spin_unlock(&dum->lock); |
382 | dum->driver->suspend(&dum->gadget); | |
383 | spin_lock(&dum->lock); | |
384 | } else if (!dum_hcd->old_active && dum->driver->resume) { | |
385 | spin_unlock(&dum->lock); | |
386 | dum->driver->resume(&dum->gadget); | |
387 | spin_lock(&dum->lock); | |
f1c39fad AS |
388 | } |
389 | } | |
390 | ||
cdfcbd2c TB |
391 | dum_hcd->old_status = dum_hcd->port_status; |
392 | dum_hcd->old_active = dum_hcd->active; | |
f1c39fad AS |
393 | } |
394 | ||
395 | /*-------------------------------------------------------------------------*/ | |
396 | ||
1da177e4 LT |
397 | /* SLAVE/GADGET SIDE DRIVER |
398 | * | |
399 | * This only tracks gadget state. All the work is done when the host | |
400 | * side tries some (emulated) i/o operation. Real device controller | |
401 | * drivers would do real i/o using dma, fifos, irqs, timers, etc. | |
402 | */ | |
403 | ||
404 | #define is_enabled(dum) \ | |
405 | (dum->port_status & USB_PORT_STAT_ENABLE) | |
406 | ||
407 | static int | |
408 | dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) | |
409 | { | |
410 | struct dummy *dum; | |
cdfcbd2c | 411 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
412 | struct dummy_ep *ep; |
413 | unsigned max; | |
414 | int retval; | |
415 | ||
416 | ep = usb_ep_to_dummy_ep (_ep); | |
417 | if (!_ep || !desc || ep->desc || _ep->name == ep0name | |
418 | || desc->bDescriptorType != USB_DT_ENDPOINT) | |
419 | return -EINVAL; | |
420 | dum = ep_to_dummy (ep); | |
cdfcbd2c TB |
421 | if (!dum->driver) |
422 | return -ESHUTDOWN; | |
719e52cb SAS |
423 | |
424 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
cdfcbd2c | 425 | if (!is_enabled(dum_hcd)) |
1da177e4 | 426 | return -ESHUTDOWN; |
cdfcbd2c TB |
427 | |
428 | /* | |
429 | * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the | |
430 | * maximum packet size. | |
1cd8fd28 | 431 | * For SS devices the wMaxPacketSize is limited by 1024. |
cdfcbd2c | 432 | */ |
29cc8897 | 433 | max = usb_endpoint_maxp(desc) & 0x7ff; |
1da177e4 LT |
434 | |
435 | /* drivers must not request bad settings, since lower levels | |
436 | * (hardware or its drivers) may not check. some endpoints | |
437 | * can't do iso, many have maxpacket limitations, etc. | |
438 | * | |
439 | * since this "hardware" driver is here to help debugging, we | |
440 | * have some extra sanity checks. (there could be more though, | |
441 | * especially for "ep9out" style fixed function ones.) | |
442 | */ | |
443 | retval = -EINVAL; | |
444 | switch (desc->bmAttributes & 0x03) { | |
445 | case USB_ENDPOINT_XFER_BULK: | |
446 | if (strstr (ep->ep.name, "-iso") | |
447 | || strstr (ep->ep.name, "-int")) { | |
448 | goto done; | |
449 | } | |
450 | switch (dum->gadget.speed) { | |
1cd8fd28 TB |
451 | case USB_SPEED_SUPER: |
452 | if (max == 1024) | |
453 | break; | |
454 | goto done; | |
1da177e4 LT |
455 | case USB_SPEED_HIGH: |
456 | if (max == 512) | |
457 | break; | |
9063ff44 IL |
458 | goto done; |
459 | case USB_SPEED_FULL: | |
460 | if (max == 8 || max == 16 || max == 32 || max == 64) | |
1da177e4 LT |
461 | /* we'll fake any legal size */ |
462 | break; | |
9063ff44 IL |
463 | /* save a return statement */ |
464 | default: | |
465 | goto done; | |
1da177e4 LT |
466 | } |
467 | break; | |
468 | case USB_ENDPOINT_XFER_INT: | |
469 | if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ | |
470 | goto done; | |
471 | /* real hardware might not handle all packet sizes */ | |
472 | switch (dum->gadget.speed) { | |
1cd8fd28 | 473 | case USB_SPEED_SUPER: |
1da177e4 LT |
474 | case USB_SPEED_HIGH: |
475 | if (max <= 1024) | |
476 | break; | |
477 | /* save a return statement */ | |
478 | case USB_SPEED_FULL: | |
479 | if (max <= 64) | |
480 | break; | |
481 | /* save a return statement */ | |
482 | default: | |
483 | if (max <= 8) | |
484 | break; | |
485 | goto done; | |
486 | } | |
487 | break; | |
488 | case USB_ENDPOINT_XFER_ISOC: | |
489 | if (strstr (ep->ep.name, "-bulk") | |
490 | || strstr (ep->ep.name, "-int")) | |
491 | goto done; | |
492 | /* real hardware might not handle all packet sizes */ | |
493 | switch (dum->gadget.speed) { | |
1cd8fd28 | 494 | case USB_SPEED_SUPER: |
1da177e4 LT |
495 | case USB_SPEED_HIGH: |
496 | if (max <= 1024) | |
497 | break; | |
498 | /* save a return statement */ | |
499 | case USB_SPEED_FULL: | |
500 | if (max <= 1023) | |
501 | break; | |
502 | /* save a return statement */ | |
503 | default: | |
504 | goto done; | |
505 | } | |
506 | break; | |
507 | default: | |
508 | /* few chips support control except on ep0 */ | |
509 | goto done; | |
510 | } | |
511 | ||
512 | _ep->maxpacket = max; | |
513 | ep->desc = desc; | |
514 | ||
d9b76251 | 515 | dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", |
1da177e4 LT |
516 | _ep->name, |
517 | desc->bEndpointAddress & 0x0f, | |
518 | (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", | |
519 | ({ char *val; | |
520 | switch (desc->bmAttributes & 0x03) { | |
7c884fe4 TB |
521 | case USB_ENDPOINT_XFER_BULK: |
522 | val = "bulk"; | |
523 | break; | |
524 | case USB_ENDPOINT_XFER_ISOC: | |
525 | val = "iso"; | |
526 | break; | |
527 | case USB_ENDPOINT_XFER_INT: | |
528 | val = "intr"; | |
529 | break; | |
530 | default: | |
531 | val = "ctrl"; | |
532 | break; | |
1da177e4 LT |
533 | }; val; }), |
534 | max); | |
535 | ||
536 | /* at this point real hardware should be NAKing transfers | |
537 | * to that endpoint, until a buffer is queued to it. | |
538 | */ | |
851a526d | 539 | ep->halted = ep->wedged = 0; |
1da177e4 LT |
540 | retval = 0; |
541 | done: | |
542 | return retval; | |
543 | } | |
544 | ||
1da177e4 LT |
545 | static int dummy_disable (struct usb_ep *_ep) |
546 | { | |
547 | struct dummy_ep *ep; | |
548 | struct dummy *dum; | |
549 | unsigned long flags; | |
550 | int retval; | |
551 | ||
552 | ep = usb_ep_to_dummy_ep (_ep); | |
553 | if (!_ep || !ep->desc || _ep->name == ep0name) | |
554 | return -EINVAL; | |
555 | dum = ep_to_dummy (ep); | |
556 | ||
557 | spin_lock_irqsave (&dum->lock, flags); | |
558 | ep->desc = NULL; | |
559 | retval = 0; | |
560 | nuke (dum, ep); | |
561 | spin_unlock_irqrestore (&dum->lock, flags); | |
562 | ||
d9b76251 | 563 | dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); |
1da177e4 LT |
564 | return retval; |
565 | } | |
566 | ||
567 | static struct usb_request * | |
55016f10 | 568 | dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) |
1da177e4 LT |
569 | { |
570 | struct dummy_ep *ep; | |
571 | struct dummy_request *req; | |
572 | ||
573 | if (!_ep) | |
574 | return NULL; | |
575 | ep = usb_ep_to_dummy_ep (_ep); | |
576 | ||
7039f422 | 577 | req = kzalloc(sizeof(*req), mem_flags); |
1da177e4 LT |
578 | if (!req) |
579 | return NULL; | |
1da177e4 LT |
580 | INIT_LIST_HEAD (&req->queue); |
581 | return &req->req; | |
582 | } | |
583 | ||
584 | static void | |
585 | dummy_free_request (struct usb_ep *_ep, struct usb_request *_req) | |
586 | { | |
587 | struct dummy_ep *ep; | |
588 | struct dummy_request *req; | |
589 | ||
590 | ep = usb_ep_to_dummy_ep (_ep); | |
591 | if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) | |
592 | return; | |
593 | ||
594 | req = usb_request_to_dummy_request (_req); | |
595 | WARN_ON (!list_empty (&req->queue)); | |
596 | kfree (req); | |
597 | } | |
598 | ||
1da177e4 LT |
599 | static void |
600 | fifo_complete (struct usb_ep *ep, struct usb_request *req) | |
601 | { | |
602 | } | |
603 | ||
604 | static int | |
5db539e4 | 605 | dummy_queue (struct usb_ep *_ep, struct usb_request *_req, |
55016f10 | 606 | gfp_t mem_flags) |
1da177e4 LT |
607 | { |
608 | struct dummy_ep *ep; | |
609 | struct dummy_request *req; | |
610 | struct dummy *dum; | |
cdfcbd2c | 611 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
612 | unsigned long flags; |
613 | ||
614 | req = usb_request_to_dummy_request (_req); | |
615 | if (!_req || !list_empty (&req->queue) || !_req->complete) | |
616 | return -EINVAL; | |
617 | ||
618 | ep = usb_ep_to_dummy_ep (_ep); | |
619 | if (!_ep || (!ep->desc && _ep->name != ep0name)) | |
620 | return -EINVAL; | |
621 | ||
622 | dum = ep_to_dummy (ep); | |
719e52cb | 623 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); |
cdfcbd2c | 624 | if (!dum->driver || !is_enabled(dum_hcd)) |
1da177e4 LT |
625 | return -ESHUTDOWN; |
626 | ||
627 | #if 0 | |
d9b76251 | 628 | dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", |
1da177e4 LT |
629 | ep, _req, _ep->name, _req->length, _req->buf); |
630 | #endif | |
631 | ||
632 | _req->status = -EINPROGRESS; | |
633 | _req->actual = 0; | |
634 | spin_lock_irqsave (&dum->lock, flags); | |
635 | ||
636 | /* implement an emulated single-request FIFO */ | |
637 | if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && | |
638 | list_empty (&dum->fifo_req.queue) && | |
639 | list_empty (&ep->queue) && | |
640 | _req->length <= FIFO_SIZE) { | |
641 | req = &dum->fifo_req; | |
642 | req->req = *_req; | |
643 | req->req.buf = dum->fifo_buf; | |
644 | memcpy (dum->fifo_buf, _req->buf, _req->length); | |
645 | req->req.context = dum; | |
646 | req->req.complete = fifo_complete; | |
647 | ||
c728df70 | 648 | list_add_tail(&req->queue, &ep->queue); |
1da177e4 LT |
649 | spin_unlock (&dum->lock); |
650 | _req->actual = _req->length; | |
651 | _req->status = 0; | |
652 | _req->complete (_ep, _req); | |
653 | spin_lock (&dum->lock); | |
c728df70 DB |
654 | } else |
655 | list_add_tail(&req->queue, &ep->queue); | |
1da177e4 LT |
656 | spin_unlock_irqrestore (&dum->lock, flags); |
657 | ||
658 | /* real hardware would likely enable transfers here, in case | |
659 | * it'd been left NAKing. | |
660 | */ | |
661 | return 0; | |
662 | } | |
663 | ||
664 | static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) | |
665 | { | |
666 | struct dummy_ep *ep; | |
667 | struct dummy *dum; | |
668 | int retval = -EINVAL; | |
669 | unsigned long flags; | |
670 | struct dummy_request *req = NULL; | |
671 | ||
672 | if (!_ep || !_req) | |
673 | return retval; | |
674 | ep = usb_ep_to_dummy_ep (_ep); | |
675 | dum = ep_to_dummy (ep); | |
676 | ||
677 | if (!dum->driver) | |
678 | return -ESHUTDOWN; | |
679 | ||
b4dbda1a AS |
680 | local_irq_save (flags); |
681 | spin_lock (&dum->lock); | |
1da177e4 LT |
682 | list_for_each_entry (req, &ep->queue, queue) { |
683 | if (&req->req == _req) { | |
684 | list_del_init (&req->queue); | |
685 | _req->status = -ECONNRESET; | |
686 | retval = 0; | |
687 | break; | |
688 | } | |
689 | } | |
b4dbda1a | 690 | spin_unlock (&dum->lock); |
1da177e4 LT |
691 | |
692 | if (retval == 0) { | |
d9b76251 | 693 | dev_dbg (udc_dev(dum), |
1da177e4 LT |
694 | "dequeued req %p from %s, len %d buf %p\n", |
695 | req, _ep->name, _req->length, _req->buf); | |
696 | _req->complete (_ep, _req); | |
697 | } | |
b4dbda1a | 698 | local_irq_restore (flags); |
1da177e4 LT |
699 | return retval; |
700 | } | |
701 | ||
702 | static int | |
851a526d | 703 | dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) |
1da177e4 LT |
704 | { |
705 | struct dummy_ep *ep; | |
706 | struct dummy *dum; | |
707 | ||
708 | if (!_ep) | |
709 | return -EINVAL; | |
710 | ep = usb_ep_to_dummy_ep (_ep); | |
711 | dum = ep_to_dummy (ep); | |
712 | if (!dum->driver) | |
713 | return -ESHUTDOWN; | |
714 | if (!value) | |
851a526d | 715 | ep->halted = ep->wedged = 0; |
1da177e4 LT |
716 | else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
717 | !list_empty (&ep->queue)) | |
718 | return -EAGAIN; | |
851a526d | 719 | else { |
1da177e4 | 720 | ep->halted = 1; |
851a526d AS |
721 | if (wedged) |
722 | ep->wedged = 1; | |
723 | } | |
1da177e4 LT |
724 | /* FIXME clear emulated data toggle too */ |
725 | return 0; | |
726 | } | |
727 | ||
851a526d AS |
728 | static int |
729 | dummy_set_halt(struct usb_ep *_ep, int value) | |
730 | { | |
731 | return dummy_set_halt_and_wedge(_ep, value, 0); | |
732 | } | |
733 | ||
734 | static int dummy_set_wedge(struct usb_ep *_ep) | |
735 | { | |
736 | if (!_ep || _ep->name == ep0name) | |
737 | return -EINVAL; | |
738 | return dummy_set_halt_and_wedge(_ep, 1, 1); | |
739 | } | |
740 | ||
1da177e4 LT |
741 | static const struct usb_ep_ops dummy_ep_ops = { |
742 | .enable = dummy_enable, | |
743 | .disable = dummy_disable, | |
744 | ||
745 | .alloc_request = dummy_alloc_request, | |
746 | .free_request = dummy_free_request, | |
747 | ||
1da177e4 LT |
748 | .queue = dummy_queue, |
749 | .dequeue = dummy_dequeue, | |
750 | ||
751 | .set_halt = dummy_set_halt, | |
851a526d | 752 | .set_wedge = dummy_set_wedge, |
1da177e4 LT |
753 | }; |
754 | ||
755 | /*-------------------------------------------------------------------------*/ | |
756 | ||
757 | /* there are both host and device side versions of this call ... */ | |
758 | static int dummy_g_get_frame (struct usb_gadget *_gadget) | |
759 | { | |
760 | struct timeval tv; | |
761 | ||
762 | do_gettimeofday (&tv); | |
763 | return tv.tv_usec / 1000; | |
764 | } | |
765 | ||
766 | static int dummy_wakeup (struct usb_gadget *_gadget) | |
767 | { | |
cdfcbd2c | 768 | struct dummy_hcd *dum_hcd; |
1da177e4 | 769 | |
cdfcbd2c TB |
770 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
771 | if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) | |
5742b0c9 | 772 | | (1 << USB_DEVICE_REMOTE_WAKEUP)))) |
1da177e4 | 773 | return -EINVAL; |
cdfcbd2c | 774 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) |
391eca9d | 775 | return -ENOLINK; |
cdfcbd2c TB |
776 | if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && |
777 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
391eca9d AS |
778 | return -EIO; |
779 | ||
780 | /* FIXME: What if the root hub is suspended but the port isn't? */ | |
1da177e4 LT |
781 | |
782 | /* hub notices our request, issues downstream resume, etc */ | |
cdfcbd2c TB |
783 | dum_hcd->resuming = 1; |
784 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); | |
785 | mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); | |
1da177e4 LT |
786 | return 0; |
787 | } | |
788 | ||
789 | static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) | |
790 | { | |
791 | struct dummy *dum; | |
792 | ||
cdfcbd2c | 793 | dum = (gadget_to_dummy_hcd(_gadget))->dum; |
1da177e4 LT |
794 | if (value) |
795 | dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); | |
796 | else | |
797 | dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); | |
798 | return 0; | |
799 | } | |
800 | ||
b5738413 SAS |
801 | static void dummy_udc_udpate_ep0(struct dummy *dum) |
802 | { | |
803 | u32 i; | |
804 | ||
805 | if (dum->gadget.speed == USB_SPEED_SUPER) { | |
806 | for (i = 0; i < DUMMY_ENDPOINTS; i++) | |
807 | dum->ep[i].ep.max_streams = 0x10; | |
808 | dum->ep[0].ep.maxpacket = 9; | |
809 | } else { | |
810 | for (i = 0; i < DUMMY_ENDPOINTS; i++) | |
811 | dum->ep[i].ep.max_streams = 0; | |
812 | dum->ep[0].ep.maxpacket = 64; | |
813 | } | |
814 | } | |
815 | ||
f1c39fad AS |
816 | static int dummy_pullup (struct usb_gadget *_gadget, int value) |
817 | { | |
d8a14a85 | 818 | struct dummy_hcd *dum_hcd; |
f1c39fad AS |
819 | struct dummy *dum; |
820 | unsigned long flags; | |
821 | ||
b5738413 SAS |
822 | dum = gadget_dev_to_dummy(&_gadget->dev); |
823 | ||
824 | if (value && dum->driver) { | |
825 | if (mod_data.is_super_speed) | |
826 | dum->gadget.speed = dum->driver->speed; | |
827 | else if (mod_data.is_high_speed) | |
828 | dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, | |
829 | dum->driver->speed); | |
830 | else | |
831 | dum->gadget.speed = USB_SPEED_FULL; | |
832 | dummy_udc_udpate_ep0(dum); | |
833 | ||
834 | if (dum->gadget.speed < dum->driver->speed) | |
835 | dev_dbg(udc_dev(dum), "This device can perform faster" | |
836 | " if you connect it to a %s port...\n", | |
837 | (dum->driver->speed == USB_SPEED_SUPER ? | |
838 | "SuperSpeed" : "HighSpeed")); | |
839 | } | |
d8a14a85 | 840 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
d8a14a85 | 841 | |
f1c39fad AS |
842 | spin_lock_irqsave (&dum->lock, flags); |
843 | dum->pullup = (value != 0); | |
d8a14a85 | 844 | set_link_state(dum_hcd); |
f1c39fad | 845 | spin_unlock_irqrestore (&dum->lock, flags); |
b5738413 | 846 | |
d8a14a85 | 847 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
f1c39fad AS |
848 | return 0; |
849 | } | |
850 | ||
aa074739 SAS |
851 | static int dummy_udc_start(struct usb_gadget *g, |
852 | struct usb_gadget_driver *driver); | |
853 | static int dummy_udc_stop(struct usb_gadget *g, | |
854 | struct usb_gadget_driver *driver); | |
0f91349b | 855 | |
1da177e4 LT |
856 | static const struct usb_gadget_ops dummy_ops = { |
857 | .get_frame = dummy_g_get_frame, | |
858 | .wakeup = dummy_wakeup, | |
859 | .set_selfpowered = dummy_set_selfpowered, | |
f1c39fad | 860 | .pullup = dummy_pullup, |
aa074739 SAS |
861 | .udc_start = dummy_udc_start, |
862 | .udc_stop = dummy_udc_stop, | |
1da177e4 LT |
863 | }; |
864 | ||
865 | /*-------------------------------------------------------------------------*/ | |
866 | ||
867 | /* "function" sysfs attribute */ | |
868 | static ssize_t | |
10523b3b | 869 | show_function (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
870 | { |
871 | struct dummy *dum = gadget_dev_to_dummy (dev); | |
872 | ||
873 | if (!dum->driver || !dum->driver->function) | |
874 | return 0; | |
875 | return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); | |
876 | } | |
cc095b0b | 877 | static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); |
1da177e4 LT |
878 | |
879 | /*-------------------------------------------------------------------------*/ | |
880 | ||
881 | /* | |
882 | * Driver registration/unregistration. | |
883 | * | |
884 | * This is basically hardware-specific; there's usually only one real USB | |
885 | * device (not host) controller since that's how USB devices are intended | |
886 | * to work. So most implementations of these api calls will rely on the | |
887 | * fact that only one driver will ever bind to the hardware. But curious | |
888 | * hardware can be built with discrete components, so the gadget API doesn't | |
889 | * require that assumption. | |
890 | * | |
891 | * For this emulator, it might be convenient to create a usb slave device | |
892 | * for each driver that registers: just add to a big root hub. | |
893 | */ | |
894 | ||
aa074739 SAS |
895 | static int dummy_udc_start(struct usb_gadget *g, |
896 | struct usb_gadget_driver *driver) | |
1da177e4 | 897 | { |
aa074739 SAS |
898 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
899 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 900 | |
aa074739 | 901 | if (driver->speed == USB_SPEED_UNKNOWN) |
1da177e4 LT |
902 | return -EINVAL; |
903 | ||
904 | /* | |
905 | * SLAVE side init ... the layer above hardware, which | |
906 | * can't enumerate without help from the driver we're binding. | |
907 | */ | |
5742b0c9 | 908 | |
1da177e4 | 909 | dum->devstatus = 0; |
1da177e4 | 910 | |
1da177e4 | 911 | dum->driver = driver; |
d9b76251 | 912 | dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", |
1da177e4 | 913 | driver->driver.name); |
1da177e4 LT |
914 | return 0; |
915 | } | |
1da177e4 | 916 | |
aa074739 SAS |
917 | static int dummy_udc_stop(struct usb_gadget *g, |
918 | struct usb_gadget_driver *driver) | |
1da177e4 | 919 | { |
aa074739 SAS |
920 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
921 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 922 | |
d9b76251 | 923 | dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", |
1da177e4 LT |
924 | driver->driver.name); |
925 | ||
1da177e4 | 926 | dum->driver = NULL; |
25427874 SAS |
927 | |
928 | dummy_pullup(&dum->gadget, 0); | |
1da177e4 LT |
929 | return 0; |
930 | } | |
1da177e4 LT |
931 | |
932 | #undef is_enabled | |
933 | ||
d9b76251 AS |
934 | /* The gadget structure is stored inside the hcd structure and will be |
935 | * released along with it. */ | |
936 | static void | |
937 | dummy_gadget_release (struct device *dev) | |
938 | { | |
cdfcbd2c | 939 | return; |
d9b76251 AS |
940 | } |
941 | ||
0fb57599 SAS |
942 | static void init_dummy_udc_hw(struct dummy *dum) |
943 | { | |
944 | int i; | |
945 | ||
946 | INIT_LIST_HEAD(&dum->gadget.ep_list); | |
947 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { | |
948 | struct dummy_ep *ep = &dum->ep[i]; | |
949 | ||
950 | if (!ep_name[i]) | |
951 | break; | |
952 | ep->ep.name = ep_name[i]; | |
953 | ep->ep.ops = &dummy_ep_ops; | |
954 | list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); | |
955 | ep->halted = ep->wedged = ep->already_seen = | |
956 | ep->setup_stage = 0; | |
957 | ep->ep.maxpacket = ~0; | |
958 | ep->last_io = jiffies; | |
959 | ep->gadget = &dum->gadget; | |
960 | ep->desc = NULL; | |
961 | INIT_LIST_HEAD(&ep->queue); | |
962 | } | |
963 | ||
964 | dum->gadget.ep0 = &dum->ep[0].ep; | |
965 | list_del_init(&dum->ep[0].ep.ep_list); | |
966 | INIT_LIST_HEAD(&dum->fifo_req.queue); | |
f8744d40 SAS |
967 | |
968 | #ifdef CONFIG_USB_OTG | |
969 | dum->gadget.is_otg = 1; | |
970 | #endif | |
0fb57599 SAS |
971 | } |
972 | ||
8364d6b0 | 973 | static int dummy_udc_probe (struct platform_device *pdev) |
d9b76251 | 974 | { |
cdfcbd2c | 975 | struct dummy *dum = &the_controller; |
d9b76251 AS |
976 | int rc; |
977 | ||
978 | dum->gadget.name = gadget_name; | |
979 | dum->gadget.ops = &dummy_ops; | |
d327ab5b | 980 | dum->gadget.max_speed = USB_SPEED_SUPER; |
d9b76251 | 981 | |
0031a06e | 982 | dev_set_name(&dum->gadget.dev, "gadget"); |
8364d6b0 | 983 | dum->gadget.dev.parent = &pdev->dev; |
d9b76251 AS |
984 | dum->gadget.dev.release = dummy_gadget_release; |
985 | rc = device_register (&dum->gadget.dev); | |
75d87cdf RR |
986 | if (rc < 0) { |
987 | put_device(&dum->gadget.dev); | |
d9b76251 | 988 | return rc; |
75d87cdf | 989 | } |
d9b76251 | 990 | |
0fb57599 SAS |
991 | init_dummy_udc_hw(dum); |
992 | ||
0f91349b SAS |
993 | rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); |
994 | if (rc < 0) | |
995 | goto err_udc; | |
996 | ||
efd54a36 AS |
997 | rc = device_create_file (&dum->gadget.dev, &dev_attr_function); |
998 | if (rc < 0) | |
0f91349b SAS |
999 | goto err_dev; |
1000 | platform_set_drvdata(pdev, dum); | |
1001 | return rc; | |
1002 | ||
1003 | err_dev: | |
1004 | usb_del_gadget_udc(&dum->gadget); | |
1005 | err_udc: | |
1006 | device_unregister(&dum->gadget.dev); | |
d9b76251 AS |
1007 | return rc; |
1008 | } | |
1009 | ||
8364d6b0 | 1010 | static int dummy_udc_remove (struct platform_device *pdev) |
d9b76251 | 1011 | { |
8364d6b0 | 1012 | struct dummy *dum = platform_get_drvdata (pdev); |
d9b76251 | 1013 | |
0f91349b | 1014 | usb_del_gadget_udc(&dum->gadget); |
8364d6b0 | 1015 | platform_set_drvdata (pdev, NULL); |
d9b76251 AS |
1016 | device_remove_file (&dum->gadget.dev, &dev_attr_function); |
1017 | device_unregister (&dum->gadget.dev); | |
1018 | return 0; | |
1019 | } | |
1020 | ||
fc0b721f SAS |
1021 | static void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, |
1022 | int suspend) | |
391eca9d | 1023 | { |
fc0b721f SAS |
1024 | spin_lock_irq(&dum->lock); |
1025 | dum->udc_suspended = suspend; | |
d8a14a85 | 1026 | set_link_state(dum_hcd); |
fc0b721f SAS |
1027 | spin_unlock_irq(&dum->lock); |
1028 | } | |
1029 | ||
1030 | static int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) | |
1031 | { | |
1032 | struct dummy *dum = platform_get_drvdata(pdev); | |
1033 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1034 | |
fc0b721f SAS |
1035 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1036 | dummy_udc_pm(dum, dum_hcd, 1); | |
d8a14a85 | 1037 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1038 | return 0; |
1039 | } | |
1040 | ||
fc0b721f | 1041 | static int dummy_udc_resume(struct platform_device *pdev) |
391eca9d | 1042 | { |
fc0b721f SAS |
1043 | struct dummy *dum = platform_get_drvdata(pdev); |
1044 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1045 | |
fc0b721f SAS |
1046 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1047 | dummy_udc_pm(dum, dum_hcd, 0); | |
d8a14a85 | 1048 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1049 | return 0; |
1050 | } | |
1051 | ||
3ae5eaec | 1052 | static struct platform_driver dummy_udc_driver = { |
d9b76251 AS |
1053 | .probe = dummy_udc_probe, |
1054 | .remove = dummy_udc_remove, | |
391eca9d AS |
1055 | .suspend = dummy_udc_suspend, |
1056 | .resume = dummy_udc_resume, | |
3ae5eaec RK |
1057 | .driver = { |
1058 | .name = (char *) gadget_name, | |
1059 | .owner = THIS_MODULE, | |
1060 | }, | |
d9b76251 AS |
1061 | }; |
1062 | ||
1da177e4 LT |
1063 | /*-------------------------------------------------------------------------*/ |
1064 | ||
1065 | /* MASTER/HOST SIDE DRIVER | |
1066 | * | |
1067 | * this uses the hcd framework to hook up to host side drivers. | |
1068 | * its root hub will only have one device, otherwise it acts like | |
1069 | * a normal host controller. | |
1070 | * | |
1071 | * when urbs are queued, they're just stuck on a list that we | |
1072 | * scan in a timer callback. that callback connects writes from | |
1073 | * the host with reads from the device, and so on, based on the | |
1074 | * usb 2.0 rules. | |
1075 | */ | |
1076 | ||
1077 | static int dummy_urb_enqueue ( | |
1078 | struct usb_hcd *hcd, | |
1da177e4 | 1079 | struct urb *urb, |
55016f10 | 1080 | gfp_t mem_flags |
1da177e4 | 1081 | ) { |
cdfcbd2c | 1082 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1083 | struct urbp *urbp; |
1084 | unsigned long flags; | |
e9df41c5 | 1085 | int rc; |
1da177e4 LT |
1086 | |
1087 | if (!urb->transfer_buffer && urb->transfer_buffer_length) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | urbp = kmalloc (sizeof *urbp, mem_flags); | |
1091 | if (!urbp) | |
1092 | return -ENOMEM; | |
1093 | urbp->urb = urb; | |
1094 | ||
cdfcbd2c TB |
1095 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1096 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
e9df41c5 AS |
1097 | rc = usb_hcd_link_urb_to_ep(hcd, urb); |
1098 | if (rc) { | |
1099 | kfree(urbp); | |
1100 | goto done; | |
1101 | } | |
1da177e4 | 1102 | |
cdfcbd2c TB |
1103 | if (!dum_hcd->udev) { |
1104 | dum_hcd->udev = urb->dev; | |
1105 | usb_get_dev(dum_hcd->udev); | |
1106 | } else if (unlikely(dum_hcd->udev != urb->dev)) | |
1107 | dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); | |
1da177e4 | 1108 | |
cdfcbd2c | 1109 | list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); |
1da177e4 LT |
1110 | urb->hcpriv = urbp; |
1111 | if (usb_pipetype (urb->pipe) == PIPE_CONTROL) | |
1112 | urb->error_count = 1; /* mark as a new urb */ | |
1113 | ||
1114 | /* kick the scheduler, it'll do the rest */ | |
cdfcbd2c TB |
1115 | if (!timer_pending(&dum_hcd->timer)) |
1116 | mod_timer(&dum_hcd->timer, jiffies + 1); | |
1da177e4 | 1117 | |
e9df41c5 | 1118 | done: |
cdfcbd2c | 1119 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1120 | return rc; |
1da177e4 LT |
1121 | } |
1122 | ||
e9df41c5 | 1123 | static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
1da177e4 | 1124 | { |
cdfcbd2c | 1125 | struct dummy_hcd *dum_hcd; |
391eca9d | 1126 | unsigned long flags; |
e9df41c5 | 1127 | int rc; |
391eca9d AS |
1128 | |
1129 | /* giveback happens automatically in timer callback, | |
1130 | * so make sure the callback happens */ | |
cdfcbd2c TB |
1131 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1132 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
e9df41c5 AS |
1133 | |
1134 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); | |
cdfcbd2c TB |
1135 | if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && |
1136 | !list_empty(&dum_hcd->urbp_list)) | |
1137 | mod_timer(&dum_hcd->timer, jiffies); | |
e9df41c5 | 1138 | |
cdfcbd2c | 1139 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1140 | return rc; |
1da177e4 LT |
1141 | } |
1142 | ||
1da177e4 LT |
1143 | /* transfer up to a frame's worth; caller must own lock */ |
1144 | static int | |
4d2f110c AS |
1145 | transfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, |
1146 | int *status) | |
1da177e4 LT |
1147 | { |
1148 | struct dummy_request *req; | |
1149 | ||
1150 | top: | |
1151 | /* if there's no request queued, the device is NAKing; return */ | |
1152 | list_for_each_entry (req, &ep->queue, queue) { | |
1153 | unsigned host_len, dev_len, len; | |
1154 | int is_short, to_host; | |
1155 | int rescan = 0; | |
1156 | ||
1157 | /* 1..N packets of ep->ep.maxpacket each ... the last one | |
1158 | * may be short (including zero length). | |
1159 | * | |
1160 | * writer can send a zlp explicitly (length 0) or implicitly | |
1161 | * (length mod maxpacket zero, and 'zero' flag); they always | |
1162 | * terminate reads. | |
1163 | */ | |
1164 | host_len = urb->transfer_buffer_length - urb->actual_length; | |
1165 | dev_len = req->req.length - req->req.actual; | |
1166 | len = min (host_len, dev_len); | |
1167 | ||
1168 | /* FIXME update emulated data toggle too */ | |
1169 | ||
1170 | to_host = usb_pipein (urb->pipe); | |
1171 | if (unlikely (len == 0)) | |
1172 | is_short = 1; | |
1173 | else { | |
1174 | char *ubuf, *rbuf; | |
1175 | ||
1176 | /* not enough bandwidth left? */ | |
1177 | if (limit < ep->ep.maxpacket && limit < len) | |
1178 | break; | |
1179 | len = min (len, (unsigned) limit); | |
1180 | if (len == 0) | |
1181 | break; | |
1182 | ||
1183 | /* use an extra pass for the final short packet */ | |
1184 | if (len > ep->ep.maxpacket) { | |
1185 | rescan = 1; | |
1186 | len -= (len % ep->ep.maxpacket); | |
1187 | } | |
1188 | is_short = (len % ep->ep.maxpacket) != 0; | |
1189 | ||
1190 | /* else transfer packet(s) */ | |
1191 | ubuf = urb->transfer_buffer + urb->actual_length; | |
1192 | rbuf = req->req.buf + req->req.actual; | |
1193 | if (to_host) | |
1194 | memcpy (ubuf, rbuf, len); | |
1195 | else | |
1196 | memcpy (rbuf, ubuf, len); | |
1197 | ep->last_io = jiffies; | |
1198 | ||
1199 | limit -= len; | |
1200 | urb->actual_length += len; | |
1201 | req->req.actual += len; | |
1202 | } | |
1203 | ||
1204 | /* short packets terminate, maybe with overflow/underflow. | |
1205 | * it's only really an error to write too much. | |
1206 | * | |
1207 | * partially filling a buffer optionally blocks queue advances | |
1208 | * (so completion handlers can clean up the queue) but we don't | |
b0d9efba | 1209 | * need to emulate such data-in-flight. |
1da177e4 LT |
1210 | */ |
1211 | if (is_short) { | |
1212 | if (host_len == dev_len) { | |
1213 | req->req.status = 0; | |
4d2f110c | 1214 | *status = 0; |
1da177e4 LT |
1215 | } else if (to_host) { |
1216 | req->req.status = 0; | |
1217 | if (dev_len > host_len) | |
4d2f110c | 1218 | *status = -EOVERFLOW; |
1da177e4 | 1219 | else |
4d2f110c | 1220 | *status = 0; |
1da177e4 | 1221 | } else if (!to_host) { |
4d2f110c | 1222 | *status = 0; |
1da177e4 LT |
1223 | if (host_len > dev_len) |
1224 | req->req.status = -EOVERFLOW; | |
1225 | else | |
1226 | req->req.status = 0; | |
1227 | } | |
1228 | ||
1229 | /* many requests terminate without a short packet */ | |
1230 | } else { | |
1231 | if (req->req.length == req->req.actual | |
1232 | && !req->req.zero) | |
1233 | req->req.status = 0; | |
1234 | if (urb->transfer_buffer_length == urb->actual_length | |
1235 | && !(urb->transfer_flags | |
4d2f110c AS |
1236 | & URB_ZERO_PACKET)) |
1237 | *status = 0; | |
1da177e4 LT |
1238 | } |
1239 | ||
1240 | /* device side completion --> continuable */ | |
1241 | if (req->req.status != -EINPROGRESS) { | |
1242 | list_del_init (&req->queue); | |
1243 | ||
1244 | spin_unlock (&dum->lock); | |
1245 | req->req.complete (&ep->ep, &req->req); | |
1246 | spin_lock (&dum->lock); | |
1247 | ||
1248 | /* requests might have been unlinked... */ | |
1249 | rescan = 1; | |
1250 | } | |
1251 | ||
1252 | /* host side completion --> terminate */ | |
4d2f110c | 1253 | if (*status != -EINPROGRESS) |
1da177e4 LT |
1254 | break; |
1255 | ||
1256 | /* rescan to continue with any other queued i/o */ | |
1257 | if (rescan) | |
1258 | goto top; | |
1259 | } | |
1260 | return limit; | |
1261 | } | |
1262 | ||
1263 | static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) | |
1264 | { | |
1265 | int limit = ep->ep.maxpacket; | |
1266 | ||
1267 | if (dum->gadget.speed == USB_SPEED_HIGH) { | |
1268 | int tmp; | |
1269 | ||
1270 | /* high bandwidth mode */ | |
29cc8897 | 1271 | tmp = usb_endpoint_maxp(ep->desc); |
1da177e4 LT |
1272 | tmp = (tmp >> 11) & 0x03; |
1273 | tmp *= 8 /* applies to entire frame */; | |
1274 | limit += limit * tmp; | |
1275 | } | |
1cd8fd28 TB |
1276 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
1277 | switch (ep->desc->bmAttributes & 0x03) { | |
1278 | case USB_ENDPOINT_XFER_ISOC: | |
1279 | /* Sec. 4.4.8.2 USB3.0 Spec */ | |
1280 | limit = 3 * 16 * 1024 * 8; | |
1281 | break; | |
1282 | case USB_ENDPOINT_XFER_INT: | |
1283 | /* Sec. 4.4.7.2 USB3.0 Spec */ | |
1284 | limit = 3 * 1024 * 8; | |
1285 | break; | |
1286 | case USB_ENDPOINT_XFER_BULK: | |
1287 | default: | |
1288 | break; | |
1289 | } | |
1290 | } | |
1da177e4 LT |
1291 | return limit; |
1292 | } | |
1293 | ||
cdfcbd2c | 1294 | #define is_active(dum_hcd) ((dum_hcd->port_status & \ |
1da177e4 LT |
1295 | (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ |
1296 | USB_PORT_STAT_SUSPEND)) \ | |
1297 | == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) | |
1298 | ||
1299 | static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) | |
1300 | { | |
1301 | int i; | |
1302 | ||
1cd8fd28 TB |
1303 | if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? |
1304 | dum->ss_hcd : dum->hs_hcd))) | |
1da177e4 LT |
1305 | return NULL; |
1306 | if ((address & ~USB_DIR_IN) == 0) | |
1307 | return &dum->ep [0]; | |
1308 | for (i = 1; i < DUMMY_ENDPOINTS; i++) { | |
1309 | struct dummy_ep *ep = &dum->ep [i]; | |
1310 | ||
1311 | if (!ep->desc) | |
1312 | continue; | |
1313 | if (ep->desc->bEndpointAddress == address) | |
1314 | return ep; | |
1315 | } | |
1316 | return NULL; | |
1317 | } | |
1318 | ||
1319 | #undef is_active | |
1320 | ||
1321 | #define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) | |
1322 | #define Dev_InRequest (Dev_Request | USB_DIR_IN) | |
1323 | #define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) | |
1324 | #define Intf_InRequest (Intf_Request | USB_DIR_IN) | |
1325 | #define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) | |
1326 | #define Ep_InRequest (Ep_Request | USB_DIR_IN) | |
1327 | ||
8be8a9d3 TB |
1328 | |
1329 | /** | |
1330 | * handle_control_request() - handles all control transfers | |
1331 | * @dum: pointer to dummy (the_controller) | |
1332 | * @urb: the urb request to handle | |
1333 | * @setup: pointer to the setup data for a USB device control | |
1334 | * request | |
1335 | * @status: pointer to request handling status | |
1336 | * | |
1337 | * Return 0 - if the request was handled | |
1338 | * 1 - if the request wasn't handles | |
1339 | * error code on error | |
1340 | */ | |
cdfcbd2c | 1341 | static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, |
8be8a9d3 TB |
1342 | struct usb_ctrlrequest *setup, |
1343 | int *status) | |
1344 | { | |
1345 | struct dummy_ep *ep2; | |
cdfcbd2c | 1346 | struct dummy *dum = dum_hcd->dum; |
8be8a9d3 TB |
1347 | int ret_val = 1; |
1348 | unsigned w_index; | |
1349 | unsigned w_value; | |
1350 | ||
1351 | w_index = le16_to_cpu(setup->wIndex); | |
1352 | w_value = le16_to_cpu(setup->wValue); | |
1353 | switch (setup->bRequest) { | |
1354 | case USB_REQ_SET_ADDRESS: | |
1355 | if (setup->bRequestType != Dev_Request) | |
1356 | break; | |
1357 | dum->address = w_value; | |
1358 | *status = 0; | |
1359 | dev_dbg(udc_dev(dum), "set_address = %d\n", | |
1360 | w_value); | |
1361 | ret_val = 0; | |
1362 | break; | |
1363 | case USB_REQ_SET_FEATURE: | |
1364 | if (setup->bRequestType == Dev_Request) { | |
1365 | ret_val = 0; | |
1366 | switch (w_value) { | |
1367 | case USB_DEVICE_REMOTE_WAKEUP: | |
1368 | break; | |
1369 | case USB_DEVICE_B_HNP_ENABLE: | |
1370 | dum->gadget.b_hnp_enable = 1; | |
1371 | break; | |
1372 | case USB_DEVICE_A_HNP_SUPPORT: | |
1373 | dum->gadget.a_hnp_support = 1; | |
1374 | break; | |
1375 | case USB_DEVICE_A_ALT_HNP_SUPPORT: | |
1376 | dum->gadget.a_alt_hnp_support = 1; | |
1377 | break; | |
1cd8fd28 TB |
1378 | case USB_DEVICE_U1_ENABLE: |
1379 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1380 | HCD_USB3) | |
1381 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1382 | else | |
1383 | ret_val = -EOPNOTSUPP; | |
1384 | break; | |
1385 | case USB_DEVICE_U2_ENABLE: | |
1386 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1387 | HCD_USB3) | |
1388 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1389 | else | |
1390 | ret_val = -EOPNOTSUPP; | |
1391 | break; | |
1392 | case USB_DEVICE_LTM_ENABLE: | |
1393 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1394 | HCD_USB3) | |
1395 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1396 | else | |
1397 | ret_val = -EOPNOTSUPP; | |
1398 | break; | |
8be8a9d3 TB |
1399 | default: |
1400 | ret_val = -EOPNOTSUPP; | |
1401 | } | |
1402 | if (ret_val == 0) { | |
1403 | dum->devstatus |= (1 << w_value); | |
1404 | *status = 0; | |
1405 | } | |
1406 | } else if (setup->bRequestType == Ep_Request) { | |
1407 | /* endpoint halt */ | |
1408 | ep2 = find_endpoint(dum, w_index); | |
1409 | if (!ep2 || ep2->ep.name == ep0name) { | |
1410 | ret_val = -EOPNOTSUPP; | |
1411 | break; | |
1412 | } | |
1413 | ep2->halted = 1; | |
1414 | ret_val = 0; | |
1415 | *status = 0; | |
1416 | } | |
1417 | break; | |
1418 | case USB_REQ_CLEAR_FEATURE: | |
1419 | if (setup->bRequestType == Dev_Request) { | |
1420 | ret_val = 0; | |
1421 | switch (w_value) { | |
1422 | case USB_DEVICE_REMOTE_WAKEUP: | |
1423 | w_value = USB_DEVICE_REMOTE_WAKEUP; | |
1424 | break; | |
1cd8fd28 TB |
1425 | case USB_DEVICE_U1_ENABLE: |
1426 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1427 | HCD_USB3) | |
1428 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1429 | else | |
1430 | ret_val = -EOPNOTSUPP; | |
1431 | break; | |
1432 | case USB_DEVICE_U2_ENABLE: | |
1433 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1434 | HCD_USB3) | |
1435 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1436 | else | |
1437 | ret_val = -EOPNOTSUPP; | |
1438 | break; | |
1439 | case USB_DEVICE_LTM_ENABLE: | |
1440 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1441 | HCD_USB3) | |
1442 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1443 | else | |
1444 | ret_val = -EOPNOTSUPP; | |
1445 | break; | |
8be8a9d3 TB |
1446 | default: |
1447 | ret_val = -EOPNOTSUPP; | |
1448 | break; | |
1449 | } | |
1450 | if (ret_val == 0) { | |
1451 | dum->devstatus &= ~(1 << w_value); | |
1452 | *status = 0; | |
1453 | } | |
1454 | } else if (setup->bRequestType == Ep_Request) { | |
1455 | /* endpoint halt */ | |
1456 | ep2 = find_endpoint(dum, w_index); | |
1457 | if (!ep2) { | |
1458 | ret_val = -EOPNOTSUPP; | |
1459 | break; | |
1460 | } | |
1461 | if (!ep2->wedged) | |
1462 | ep2->halted = 0; | |
1463 | ret_val = 0; | |
1464 | *status = 0; | |
1465 | } | |
1466 | break; | |
1467 | case USB_REQ_GET_STATUS: | |
1468 | if (setup->bRequestType == Dev_InRequest | |
1469 | || setup->bRequestType == Intf_InRequest | |
1470 | || setup->bRequestType == Ep_InRequest) { | |
1471 | char *buf; | |
1472 | /* | |
1473 | * device: remote wakeup, selfpowered | |
1474 | * interface: nothing | |
1475 | * endpoint: halt | |
1476 | */ | |
1477 | buf = (char *)urb->transfer_buffer; | |
1478 | if (urb->transfer_buffer_length > 0) { | |
1479 | if (setup->bRequestType == Ep_InRequest) { | |
1480 | ep2 = find_endpoint(dum, w_index); | |
1481 | if (!ep2) { | |
1482 | ret_val = -EOPNOTSUPP; | |
1483 | break; | |
1484 | } | |
1485 | buf[0] = ep2->halted; | |
1486 | } else if (setup->bRequestType == | |
1487 | Dev_InRequest) { | |
1488 | buf[0] = (u8)dum->devstatus; | |
1489 | } else | |
1490 | buf[0] = 0; | |
1491 | } | |
1492 | if (urb->transfer_buffer_length > 1) | |
1493 | buf[1] = 0; | |
1494 | urb->actual_length = min_t(u32, 2, | |
1495 | urb->transfer_buffer_length); | |
1496 | ret_val = 0; | |
1497 | *status = 0; | |
1498 | } | |
1499 | break; | |
1500 | } | |
1501 | return ret_val; | |
1502 | } | |
1503 | ||
1da177e4 LT |
1504 | /* drive both sides of the transfers; looks like irq handlers to |
1505 | * both drivers except the callbacks aren't in_irq(). | |
1506 | */ | |
cdfcbd2c | 1507 | static void dummy_timer(unsigned long _dum_hcd) |
1da177e4 | 1508 | { |
cdfcbd2c TB |
1509 | struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; |
1510 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 LT |
1511 | struct urbp *urbp, *tmp; |
1512 | unsigned long flags; | |
1513 | int limit, total; | |
1514 | int i; | |
1515 | ||
1516 | /* simplistic model for one frame's bandwidth */ | |
1517 | switch (dum->gadget.speed) { | |
1518 | case USB_SPEED_LOW: | |
1519 | total = 8/*bytes*/ * 12/*packets*/; | |
1520 | break; | |
1521 | case USB_SPEED_FULL: | |
1522 | total = 64/*bytes*/ * 19/*packets*/; | |
1523 | break; | |
1524 | case USB_SPEED_HIGH: | |
1525 | total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; | |
1526 | break; | |
1cd8fd28 TB |
1527 | case USB_SPEED_SUPER: |
1528 | /* Bus speed is 500000 bytes/ms, so use a little less */ | |
1529 | total = 490000; | |
1530 | break; | |
1da177e4 | 1531 | default: |
cdfcbd2c | 1532 | dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); |
1da177e4 LT |
1533 | return; |
1534 | } | |
1535 | ||
1536 | /* FIXME if HZ != 1000 this will probably misbehave ... */ | |
1537 | ||
1538 | /* look at each urb queued by the host side driver */ | |
1539 | spin_lock_irqsave (&dum->lock, flags); | |
1540 | ||
cdfcbd2c TB |
1541 | if (!dum_hcd->udev) { |
1542 | dev_err(dummy_dev(dum_hcd), | |
1da177e4 LT |
1543 | "timer fired with no URBs pending?\n"); |
1544 | spin_unlock_irqrestore (&dum->lock, flags); | |
1545 | return; | |
1546 | } | |
1547 | ||
1548 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { | |
1549 | if (!ep_name [i]) | |
1550 | break; | |
1551 | dum->ep [i].already_seen = 0; | |
1552 | } | |
1553 | ||
1554 | restart: | |
cdfcbd2c | 1555 | list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { |
1da177e4 LT |
1556 | struct urb *urb; |
1557 | struct dummy_request *req; | |
1558 | u8 address; | |
1559 | struct dummy_ep *ep = NULL; | |
1560 | int type; | |
4d2f110c | 1561 | int status = -EINPROGRESS; |
1da177e4 LT |
1562 | |
1563 | urb = urbp->urb; | |
eb231054 | 1564 | if (urb->unlinked) |
1da177e4 | 1565 | goto return_urb; |
cdfcbd2c | 1566 | else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) |
391eca9d | 1567 | continue; |
1da177e4 LT |
1568 | type = usb_pipetype (urb->pipe); |
1569 | ||
1570 | /* used up this frame's non-periodic bandwidth? | |
1571 | * FIXME there's infinite bandwidth for control and | |
1572 | * periodic transfers ... unrealistic. | |
1573 | */ | |
1574 | if (total <= 0 && type == PIPE_BULK) | |
1575 | continue; | |
1576 | ||
1577 | /* find the gadget's ep for this request (if configured) */ | |
1578 | address = usb_pipeendpoint (urb->pipe); | |
1579 | if (usb_pipein (urb->pipe)) | |
1580 | address |= USB_DIR_IN; | |
1581 | ep = find_endpoint(dum, address); | |
1582 | if (!ep) { | |
1583 | /* set_configuration() disagreement */ | |
cdfcbd2c | 1584 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
1585 | "no ep configured for urb %p\n", |
1586 | urb); | |
4d2f110c | 1587 | status = -EPROTO; |
1da177e4 LT |
1588 | goto return_urb; |
1589 | } | |
1590 | ||
1591 | if (ep->already_seen) | |
1592 | continue; | |
1593 | ep->already_seen = 1; | |
1594 | if (ep == &dum->ep [0] && urb->error_count) { | |
1595 | ep->setup_stage = 1; /* a new urb */ | |
1596 | urb->error_count = 0; | |
1597 | } | |
1598 | if (ep->halted && !ep->setup_stage) { | |
1599 | /* NOTE: must not be iso! */ | |
cdfcbd2c | 1600 | dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", |
1da177e4 | 1601 | ep->ep.name, urb); |
4d2f110c | 1602 | status = -EPIPE; |
1da177e4 LT |
1603 | goto return_urb; |
1604 | } | |
1605 | /* FIXME make sure both ends agree on maxpacket */ | |
1606 | ||
1607 | /* handle control requests */ | |
1608 | if (ep == &dum->ep [0] && ep->setup_stage) { | |
1609 | struct usb_ctrlrequest setup; | |
1610 | int value = 1; | |
1da177e4 LT |
1611 | |
1612 | setup = *(struct usb_ctrlrequest*) urb->setup_packet; | |
1da177e4 LT |
1613 | /* paranoia, in case of stale queued data */ |
1614 | list_for_each_entry (req, &ep->queue, queue) { | |
1615 | list_del_init (&req->queue); | |
1616 | req->req.status = -EOVERFLOW; | |
d9b76251 | 1617 | dev_dbg (udc_dev(dum), "stale req = %p\n", |
1da177e4 LT |
1618 | req); |
1619 | ||
1620 | spin_unlock (&dum->lock); | |
1621 | req->req.complete (&ep->ep, &req->req); | |
1622 | spin_lock (&dum->lock); | |
1623 | ep->already_seen = 0; | |
1624 | goto restart; | |
1625 | } | |
1626 | ||
1627 | /* gadget driver never sees set_address or operations | |
1628 | * on standard feature flags. some hardware doesn't | |
1629 | * even expose them. | |
1630 | */ | |
1631 | ep->last_io = jiffies; | |
1632 | ep->setup_stage = 0; | |
1633 | ep->halted = 0; | |
1da177e4 | 1634 | |
cdfcbd2c | 1635 | value = handle_control_request(dum_hcd, urb, &setup, |
8be8a9d3 | 1636 | &status); |
1da177e4 LT |
1637 | |
1638 | /* gadget driver handles all other requests. block | |
1639 | * until setup() returns; no reentrancy issues etc. | |
1640 | */ | |
1641 | if (value > 0) { | |
1642 | spin_unlock (&dum->lock); | |
1643 | value = dum->driver->setup (&dum->gadget, | |
1644 | &setup); | |
1645 | spin_lock (&dum->lock); | |
1646 | ||
1647 | if (value >= 0) { | |
1648 | /* no delays (max 64KB data stage) */ | |
1649 | limit = 64*1024; | |
1650 | goto treat_control_like_bulk; | |
1651 | } | |
1652 | /* error, see below */ | |
1653 | } | |
1654 | ||
1655 | if (value < 0) { | |
1656 | if (value != -EOPNOTSUPP) | |
d9b76251 | 1657 | dev_dbg (udc_dev(dum), |
1da177e4 LT |
1658 | "setup --> %d\n", |
1659 | value); | |
4d2f110c | 1660 | status = -EPIPE; |
1da177e4 LT |
1661 | urb->actual_length = 0; |
1662 | } | |
1663 | ||
1664 | goto return_urb; | |
1665 | } | |
1666 | ||
1667 | /* non-control requests */ | |
1668 | limit = total; | |
1669 | switch (usb_pipetype (urb->pipe)) { | |
1670 | case PIPE_ISOCHRONOUS: | |
1671 | /* FIXME is it urb->interval since the last xfer? | |
1672 | * use urb->iso_frame_desc[i]. | |
1673 | * complete whether or not ep has requests queued. | |
1674 | * report random errors, to debug drivers. | |
1675 | */ | |
1676 | limit = max (limit, periodic_bytes (dum, ep)); | |
4d2f110c | 1677 | status = -ENOSYS; |
1da177e4 LT |
1678 | break; |
1679 | ||
1680 | case PIPE_INTERRUPT: | |
1681 | /* FIXME is it urb->interval since the last xfer? | |
1682 | * this almost certainly polls too fast. | |
1683 | */ | |
1684 | limit = max (limit, periodic_bytes (dum, ep)); | |
1685 | /* FALLTHROUGH */ | |
1686 | ||
1687 | // case PIPE_BULK: case PIPE_CONTROL: | |
1688 | default: | |
1689 | treat_control_like_bulk: | |
1690 | ep->last_io = jiffies; | |
4d2f110c | 1691 | total = transfer(dum, urb, ep, limit, &status); |
1da177e4 LT |
1692 | break; |
1693 | } | |
1694 | ||
1695 | /* incomplete transfer? */ | |
4d2f110c | 1696 | if (status == -EINPROGRESS) |
1da177e4 LT |
1697 | continue; |
1698 | ||
1699 | return_urb: | |
1da177e4 LT |
1700 | list_del (&urbp->urbp_list); |
1701 | kfree (urbp); | |
1702 | if (ep) | |
1703 | ep->already_seen = ep->setup_stage = 0; | |
1704 | ||
cdfcbd2c | 1705 | usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); |
1da177e4 | 1706 | spin_unlock (&dum->lock); |
cdfcbd2c | 1707 | usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); |
1da177e4 LT |
1708 | spin_lock (&dum->lock); |
1709 | ||
1710 | goto restart; | |
1711 | } | |
1712 | ||
cdfcbd2c TB |
1713 | if (list_empty(&dum_hcd->urbp_list)) { |
1714 | usb_put_dev(dum_hcd->udev); | |
1715 | dum_hcd->udev = NULL; | |
1716 | } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
391eca9d | 1717 | /* want a 1 msec delay here */ |
cdfcbd2c | 1718 | mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); |
1da177e4 LT |
1719 | } |
1720 | ||
1721 | spin_unlock_irqrestore (&dum->lock, flags); | |
1722 | } | |
1723 | ||
1724 | /*-------------------------------------------------------------------------*/ | |
1725 | ||
1726 | #define PORT_C_MASK \ | |
c2db8b5e AS |
1727 | ((USB_PORT_STAT_C_CONNECTION \ |
1728 | | USB_PORT_STAT_C_ENABLE \ | |
1729 | | USB_PORT_STAT_C_SUSPEND \ | |
1730 | | USB_PORT_STAT_C_OVERCURRENT \ | |
1731 | | USB_PORT_STAT_C_RESET) << 16) | |
1da177e4 LT |
1732 | |
1733 | static int dummy_hub_status (struct usb_hcd *hcd, char *buf) | |
1734 | { | |
cdfcbd2c | 1735 | struct dummy_hcd *dum_hcd; |
1da177e4 | 1736 | unsigned long flags; |
391eca9d | 1737 | int retval = 0; |
1da177e4 | 1738 | |
cdfcbd2c | 1739 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 | 1740 | |
cdfcbd2c | 1741 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
541c7d43 | 1742 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d | 1743 | goto done; |
f1c39fad | 1744 | |
cdfcbd2c TB |
1745 | if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { |
1746 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
1747 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1748 | set_link_state(dum_hcd); | |
f1c39fad AS |
1749 | } |
1750 | ||
cdfcbd2c | 1751 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) { |
1da177e4 | 1752 | *buf = (1 << 1); |
cdfcbd2c TB |
1753 | dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", |
1754 | dum_hcd->port_status); | |
1da177e4 | 1755 | retval = 1; |
cdfcbd2c | 1756 | if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) |
391eca9d | 1757 | usb_hcd_resume_root_hub (hcd); |
1da177e4 | 1758 | } |
391eca9d | 1759 | done: |
cdfcbd2c | 1760 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
1761 | return retval; |
1762 | } | |
1763 | ||
1cd8fd28 TB |
1764 | static inline void |
1765 | ss_hub_descriptor(struct usb_hub_descriptor *desc) | |
1766 | { | |
1767 | memset(desc, 0, sizeof *desc); | |
1768 | desc->bDescriptorType = 0x2a; | |
1769 | desc->bDescLength = 12; | |
1770 | desc->wHubCharacteristics = cpu_to_le16(0x0001); | |
1771 | desc->bNbrPorts = 1; | |
1772 | desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ | |
1773 | desc->u.ss.DeviceRemovable = 0xffff; | |
1774 | } | |
1775 | ||
1da177e4 LT |
1776 | static inline void |
1777 | hub_descriptor (struct usb_hub_descriptor *desc) | |
1778 | { | |
1779 | memset (desc, 0, sizeof *desc); | |
1780 | desc->bDescriptorType = 0x29; | |
1781 | desc->bDescLength = 9; | |
fd05e720 | 1782 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
1da177e4 | 1783 | desc->bNbrPorts = 1; |
dbe79bbe JY |
1784 | desc->u.hs.DeviceRemovable[0] = 0xff; |
1785 | desc->u.hs.DeviceRemovable[1] = 0xff; | |
1da177e4 LT |
1786 | } |
1787 | ||
1788 | static int dummy_hub_control ( | |
1789 | struct usb_hcd *hcd, | |
1790 | u16 typeReq, | |
1791 | u16 wValue, | |
1792 | u16 wIndex, | |
1793 | char *buf, | |
1794 | u16 wLength | |
1795 | ) { | |
cdfcbd2c | 1796 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1797 | int retval = 0; |
1798 | unsigned long flags; | |
1799 | ||
541c7d43 | 1800 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d AS |
1801 | return -ETIMEDOUT; |
1802 | ||
cdfcbd2c TB |
1803 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1804 | ||
1805 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
1da177e4 LT |
1806 | switch (typeReq) { |
1807 | case ClearHubFeature: | |
1808 | break; | |
1809 | case ClearPortFeature: | |
1810 | switch (wValue) { | |
1811 | case USB_PORT_FEAT_SUSPEND: | |
1cd8fd28 TB |
1812 | if (hcd->speed == HCD_USB3) { |
1813 | dev_dbg(dummy_dev(dum_hcd), | |
1814 | "USB_PORT_FEAT_SUSPEND req not " | |
1815 | "supported for USB 3.0 roothub\n"); | |
1816 | goto error; | |
1817 | } | |
cdfcbd2c | 1818 | if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { |
1da177e4 | 1819 | /* 20msec resume signaling */ |
cdfcbd2c TB |
1820 | dum_hcd->resuming = 1; |
1821 | dum_hcd->re_timeout = jiffies + | |
f1c39fad | 1822 | msecs_to_jiffies(20); |
1da177e4 LT |
1823 | } |
1824 | break; | |
1825 | case USB_PORT_FEAT_POWER: | |
1cd8fd28 TB |
1826 | if (hcd->speed == HCD_USB3) { |
1827 | if (dum_hcd->port_status & USB_PORT_STAT_POWER) | |
1828 | dev_dbg(dummy_dev(dum_hcd), | |
1829 | "power-off\n"); | |
1830 | } else | |
1831 | if (dum_hcd->port_status & | |
1832 | USB_SS_PORT_STAT_POWER) | |
1833 | dev_dbg(dummy_dev(dum_hcd), | |
1834 | "power-off\n"); | |
f1c39fad | 1835 | /* FALLS THROUGH */ |
1da177e4 | 1836 | default: |
cdfcbd2c TB |
1837 | dum_hcd->port_status &= ~(1 << wValue); |
1838 | set_link_state(dum_hcd); | |
1da177e4 LT |
1839 | } |
1840 | break; | |
1841 | case GetHubDescriptor: | |
1cd8fd28 TB |
1842 | if (hcd->speed == HCD_USB3 && |
1843 | (wLength < USB_DT_SS_HUB_SIZE || | |
1844 | wValue != (USB_DT_SS_HUB << 8))) { | |
1845 | dev_dbg(dummy_dev(dum_hcd), | |
1846 | "Wrong hub descriptor type for " | |
1847 | "USB 3.0 roothub.\n"); | |
1848 | goto error; | |
1849 | } | |
1850 | if (hcd->speed == HCD_USB3) | |
1851 | ss_hub_descriptor((struct usb_hub_descriptor *) buf); | |
1852 | else | |
1853 | hub_descriptor((struct usb_hub_descriptor *) buf); | |
1da177e4 LT |
1854 | break; |
1855 | case GetHubStatus: | |
551509d2 | 1856 | *(__le32 *) buf = cpu_to_le32 (0); |
1da177e4 LT |
1857 | break; |
1858 | case GetPortStatus: | |
1859 | if (wIndex != 1) | |
1860 | retval = -EPIPE; | |
1861 | ||
1862 | /* whoever resets or resumes must GetPortStatus to | |
1863 | * complete it!! | |
1864 | */ | |
cdfcbd2c TB |
1865 | if (dum_hcd->resuming && |
1866 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
1867 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
1868 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1da177e4 | 1869 | } |
cdfcbd2c TB |
1870 | if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && |
1871 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
1872 | dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); | |
1873 | dum_hcd->port_status &= ~USB_PORT_STAT_RESET; | |
1874 | if (dum_hcd->dum->pullup) { | |
1875 | dum_hcd->port_status |= USB_PORT_STAT_ENABLE; | |
1cd8fd28 TB |
1876 | |
1877 | if (hcd->speed < HCD_USB3) { | |
1878 | switch (dum_hcd->dum->gadget.speed) { | |
1879 | case USB_SPEED_HIGH: | |
1880 | dum_hcd->port_status |= | |
1881 | USB_PORT_STAT_HIGH_SPEED; | |
1882 | break; | |
1883 | case USB_SPEED_LOW: | |
1884 | dum_hcd->dum->gadget.ep0-> | |
1885 | maxpacket = 8; | |
1886 | dum_hcd->port_status |= | |
1887 | USB_PORT_STAT_LOW_SPEED; | |
1888 | break; | |
1889 | default: | |
1890 | dum_hcd->dum->gadget.speed = | |
1891 | USB_SPEED_FULL; | |
1892 | break; | |
1893 | } | |
1da177e4 LT |
1894 | } |
1895 | } | |
1896 | } | |
cdfcbd2c TB |
1897 | set_link_state(dum_hcd); |
1898 | ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); | |
1899 | ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); | |
1da177e4 LT |
1900 | break; |
1901 | case SetHubFeature: | |
1902 | retval = -EPIPE; | |
1903 | break; | |
1904 | case SetPortFeature: | |
1905 | switch (wValue) { | |
1cd8fd28 TB |
1906 | case USB_PORT_FEAT_LINK_STATE: |
1907 | if (hcd->speed != HCD_USB3) { | |
1908 | dev_dbg(dummy_dev(dum_hcd), | |
1909 | "USB_PORT_FEAT_LINK_STATE req not " | |
1910 | "supported for USB 2.0 roothub\n"); | |
1911 | goto error; | |
1912 | } | |
1913 | /* | |
1914 | * Since this is dummy we don't have an actual link so | |
1915 | * there is nothing to do for the SET_LINK_STATE cmd | |
1916 | */ | |
1917 | break; | |
1918 | case USB_PORT_FEAT_U1_TIMEOUT: | |
1919 | case USB_PORT_FEAT_U2_TIMEOUT: | |
1920 | /* TODO: add suspend/resume support! */ | |
1921 | if (hcd->speed != HCD_USB3) { | |
1922 | dev_dbg(dummy_dev(dum_hcd), | |
1923 | "USB_PORT_FEAT_U1/2_TIMEOUT req not " | |
1924 | "supported for USB 2.0 roothub\n"); | |
1925 | goto error; | |
1926 | } | |
1927 | break; | |
1da177e4 | 1928 | case USB_PORT_FEAT_SUSPEND: |
1cd8fd28 TB |
1929 | /* Applicable only for USB2.0 hub */ |
1930 | if (hcd->speed == HCD_USB3) { | |
1931 | dev_dbg(dummy_dev(dum_hcd), | |
1932 | "USB_PORT_FEAT_SUSPEND req not " | |
1933 | "supported for USB 3.0 roothub\n"); | |
1934 | goto error; | |
1935 | } | |
cdfcbd2c TB |
1936 | if (dum_hcd->active) { |
1937 | dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; | |
f1c39fad AS |
1938 | |
1939 | /* HNP would happen here; for now we | |
1940 | * assume b_bus_req is always true. | |
1941 | */ | |
cdfcbd2c | 1942 | set_link_state(dum_hcd); |
f1c39fad | 1943 | if (((1 << USB_DEVICE_B_HNP_ENABLE) |
cdfcbd2c TB |
1944 | & dum_hcd->dum->devstatus) != 0) |
1945 | dev_dbg(dummy_dev(dum_hcd), | |
5742b0c9 | 1946 | "no HNP yet!\n"); |
1da177e4 LT |
1947 | } |
1948 | break; | |
f1c39fad | 1949 | case USB_PORT_FEAT_POWER: |
1cd8fd28 TB |
1950 | if (hcd->speed == HCD_USB3) |
1951 | dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; | |
1952 | else | |
1953 | dum_hcd->port_status |= USB_PORT_STAT_POWER; | |
cdfcbd2c | 1954 | set_link_state(dum_hcd); |
f1c39fad | 1955 | break; |
1cd8fd28 TB |
1956 | case USB_PORT_FEAT_BH_PORT_RESET: |
1957 | /* Applicable only for USB3.0 hub */ | |
1958 | if (hcd->speed != HCD_USB3) { | |
1959 | dev_dbg(dummy_dev(dum_hcd), | |
1960 | "USB_PORT_FEAT_BH_PORT_RESET req not " | |
1961 | "supported for USB 2.0 roothub\n"); | |
1962 | goto error; | |
1963 | } | |
1964 | /* FALLS THROUGH */ | |
1da177e4 | 1965 | case USB_PORT_FEAT_RESET: |
f1c39fad | 1966 | /* if it's already enabled, disable */ |
1cd8fd28 TB |
1967 | if (hcd->speed == HCD_USB3) { |
1968 | dum_hcd->port_status = 0; | |
1969 | dum_hcd->port_status = | |
1970 | (USB_SS_PORT_STAT_POWER | | |
1971 | USB_PORT_STAT_CONNECTION | | |
1972 | USB_PORT_STAT_RESET); | |
1973 | } else | |
1974 | dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE | |
f1c39fad AS |
1975 | | USB_PORT_STAT_LOW_SPEED |
1976 | | USB_PORT_STAT_HIGH_SPEED); | |
cdfcbd2c TB |
1977 | /* |
1978 | * We want to reset device status. All but the | |
1979 | * Self powered feature | |
1980 | */ | |
1981 | dum_hcd->dum->devstatus &= | |
1982 | (1 << USB_DEVICE_SELF_POWERED); | |
1cd8fd28 TB |
1983 | /* |
1984 | * FIXME USB3.0: what is the correct reset signaling | |
1985 | * interval? Is it still 50msec as for HS? | |
1986 | */ | |
cdfcbd2c | 1987 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); |
f1c39fad | 1988 | /* FALLS THROUGH */ |
1da177e4 | 1989 | default: |
1cd8fd28 TB |
1990 | if (hcd->speed == HCD_USB3) { |
1991 | if ((dum_hcd->port_status & | |
1992 | USB_SS_PORT_STAT_POWER) != 0) { | |
1993 | dum_hcd->port_status |= (1 << wValue); | |
1994 | set_link_state(dum_hcd); | |
1995 | } | |
1996 | } else | |
1997 | if ((dum_hcd->port_status & | |
1998 | USB_PORT_STAT_POWER) != 0) { | |
1999 | dum_hcd->port_status |= (1 << wValue); | |
2000 | set_link_state(dum_hcd); | |
2001 | } | |
2002 | } | |
2003 | break; | |
2004 | case GetPortErrorCount: | |
2005 | if (hcd->speed != HCD_USB3) { | |
2006 | dev_dbg(dummy_dev(dum_hcd), | |
2007 | "GetPortErrorCount req not " | |
2008 | "supported for USB 2.0 roothub\n"); | |
2009 | goto error; | |
2010 | } | |
2011 | /* We'll always return 0 since this is a dummy hub */ | |
2012 | *(__le32 *) buf = cpu_to_le32(0); | |
2013 | break; | |
2014 | case SetHubDepth: | |
2015 | if (hcd->speed != HCD_USB3) { | |
2016 | dev_dbg(dummy_dev(dum_hcd), | |
2017 | "SetHubDepth req not supported for " | |
2018 | "USB 2.0 roothub\n"); | |
2019 | goto error; | |
1da177e4 LT |
2020 | } |
2021 | break; | |
1da177e4 | 2022 | default: |
cdfcbd2c | 2023 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
2024 | "hub control req%04x v%04x i%04x l%d\n", |
2025 | typeReq, wValue, wIndex, wLength); | |
1cd8fd28 | 2026 | error: |
1da177e4 LT |
2027 | /* "protocol stall" on error */ |
2028 | retval = -EPIPE; | |
2029 | } | |
cdfcbd2c | 2030 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
685eb93f | 2031 | |
cdfcbd2c | 2032 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) |
685eb93f | 2033 | usb_hcd_poll_rh_status (hcd); |
1da177e4 LT |
2034 | return retval; |
2035 | } | |
2036 | ||
0c0382e3 | 2037 | static int dummy_bus_suspend (struct usb_hcd *hcd) |
391eca9d | 2038 | { |
cdfcbd2c | 2039 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
391eca9d | 2040 | |
441b62c1 | 2041 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
3cf0a22e | 2042 | |
cdfcbd2c TB |
2043 | spin_lock_irq(&dum_hcd->dum->lock); |
2044 | dum_hcd->rh_state = DUMMY_RH_SUSPENDED; | |
2045 | set_link_state(dum_hcd); | |
3cf0a22e | 2046 | hcd->state = HC_STATE_SUSPENDED; |
cdfcbd2c | 2047 | spin_unlock_irq(&dum_hcd->dum->lock); |
391eca9d AS |
2048 | return 0; |
2049 | } | |
2050 | ||
0c0382e3 | 2051 | static int dummy_bus_resume (struct usb_hcd *hcd) |
391eca9d | 2052 | { |
cdfcbd2c | 2053 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
3cf0a22e AS |
2054 | int rc = 0; |
2055 | ||
441b62c1 | 2056 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
391eca9d | 2057 | |
cdfcbd2c | 2058 | spin_lock_irq(&dum_hcd->dum->lock); |
541c7d43 | 2059 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
cfa59dab | 2060 | rc = -ESHUTDOWN; |
3cf0a22e | 2061 | } else { |
cdfcbd2c TB |
2062 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
2063 | set_link_state(dum_hcd); | |
2064 | if (!list_empty(&dum_hcd->urbp_list)) | |
2065 | mod_timer(&dum_hcd->timer, jiffies); | |
3cf0a22e AS |
2066 | hcd->state = HC_STATE_RUNNING; |
2067 | } | |
cdfcbd2c | 2068 | spin_unlock_irq(&dum_hcd->dum->lock); |
3cf0a22e | 2069 | return rc; |
391eca9d | 2070 | } |
1da177e4 LT |
2071 | |
2072 | /*-------------------------------------------------------------------------*/ | |
2073 | ||
2074 | static inline ssize_t | |
2075 | show_urb (char *buf, size_t size, struct urb *urb) | |
2076 | { | |
2077 | int ep = usb_pipeendpoint (urb->pipe); | |
2078 | ||
2079 | return snprintf (buf, size, | |
2080 | "urb/%p %s ep%d%s%s len %d/%d\n", | |
2081 | urb, | |
2082 | ({ char *s; | |
2083 | switch (urb->dev->speed) { | |
7c884fe4 TB |
2084 | case USB_SPEED_LOW: |
2085 | s = "ls"; | |
2086 | break; | |
2087 | case USB_SPEED_FULL: | |
2088 | s = "fs"; | |
2089 | break; | |
2090 | case USB_SPEED_HIGH: | |
2091 | s = "hs"; | |
2092 | break; | |
1cd8fd28 TB |
2093 | case USB_SPEED_SUPER: |
2094 | s = "ss"; | |
2095 | break; | |
7c884fe4 TB |
2096 | default: |
2097 | s = "?"; | |
2098 | break; | |
1da177e4 LT |
2099 | }; s; }), |
2100 | ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", | |
2101 | ({ char *s; \ | |
2102 | switch (usb_pipetype (urb->pipe)) { \ | |
7c884fe4 TB |
2103 | case PIPE_CONTROL: \ |
2104 | s = ""; \ | |
2105 | break; \ | |
2106 | case PIPE_BULK: \ | |
2107 | s = "-bulk"; \ | |
2108 | break; \ | |
2109 | case PIPE_INTERRUPT: \ | |
2110 | s = "-int"; \ | |
2111 | break; \ | |
2112 | default: \ | |
2113 | s = "-iso"; \ | |
2114 | break; \ | |
1da177e4 LT |
2115 | }; s;}), |
2116 | urb->actual_length, urb->transfer_buffer_length); | |
2117 | } | |
2118 | ||
2119 | static ssize_t | |
10523b3b | 2120 | show_urbs (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
2121 | { |
2122 | struct usb_hcd *hcd = dev_get_drvdata (dev); | |
cdfcbd2c | 2123 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2124 | struct urbp *urbp; |
2125 | size_t size = 0; | |
2126 | unsigned long flags; | |
2127 | ||
cdfcbd2c TB |
2128 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
2129 | list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { | |
1da177e4 LT |
2130 | size_t temp; |
2131 | ||
2132 | temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); | |
2133 | buf += temp; | |
2134 | size += temp; | |
2135 | } | |
cdfcbd2c | 2136 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
2137 | |
2138 | return size; | |
2139 | } | |
2140 | static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); | |
2141 | ||
1cd8fd28 TB |
2142 | static int dummy_start_ss(struct dummy_hcd *dum_hcd) |
2143 | { | |
2144 | init_timer(&dum_hcd->timer); | |
2145 | dum_hcd->timer.function = dummy_timer; | |
2146 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2147 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
2148 | INIT_LIST_HEAD(&dum_hcd->urbp_list); | |
2149 | dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; | |
2150 | dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; | |
2151 | dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; | |
2152 | #ifdef CONFIG_USB_OTG | |
2153 | dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; | |
2154 | #endif | |
2155 | return 0; | |
2156 | ||
2157 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ | |
2158 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); | |
2159 | } | |
2160 | ||
cdfcbd2c | 2161 | static int dummy_start(struct usb_hcd *hcd) |
1da177e4 | 2162 | { |
cdfcbd2c | 2163 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2164 | |
2165 | /* | |
2166 | * MASTER side init ... we emulate a root hub that'll only ever | |
2167 | * talk to one device (the slave side). Also appears in sysfs, | |
2168 | * just like more familiar pci-based HCDs. | |
2169 | */ | |
1cd8fd28 TB |
2170 | if (!usb_hcd_is_primary_hcd(hcd)) |
2171 | return dummy_start_ss(dum_hcd); | |
2172 | ||
cdfcbd2c TB |
2173 | spin_lock_init(&dum_hcd->dum->lock); |
2174 | init_timer(&dum_hcd->timer); | |
2175 | dum_hcd->timer.function = dummy_timer; | |
2176 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2177 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
1da177e4 | 2178 | |
cdfcbd2c | 2179 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
1da177e4 | 2180 | |
caf29f62 | 2181 | hcd->power_budget = POWER_BUDGET; |
1da177e4 | 2182 | hcd->state = HC_STATE_RUNNING; |
685eb93f | 2183 | hcd->uses_new_polling = 1; |
1da177e4 | 2184 | |
5742b0c9 AS |
2185 | #ifdef CONFIG_USB_OTG |
2186 | hcd->self.otg_port = 1; | |
2187 | #endif | |
2188 | ||
1da177e4 | 2189 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
cdfcbd2c | 2190 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
1da177e4 LT |
2191 | } |
2192 | ||
2193 | static void dummy_stop (struct usb_hcd *hcd) | |
2194 | { | |
2195 | struct dummy *dum; | |
2196 | ||
cdfcbd2c TB |
2197 | dum = (hcd_to_dummy_hcd(hcd))->dum; |
2198 | device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); | |
2199 | usb_gadget_unregister_driver(dum->driver); | |
2200 | dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); | |
1da177e4 LT |
2201 | } |
2202 | ||
2203 | /*-------------------------------------------------------------------------*/ | |
2204 | ||
2205 | static int dummy_h_get_frame (struct usb_hcd *hcd) | |
2206 | { | |
2207 | return dummy_g_get_frame (NULL); | |
2208 | } | |
2209 | ||
cdfcbd2c TB |
2210 | static int dummy_setup(struct usb_hcd *hcd) |
2211 | { | |
2212 | if (usb_hcd_is_primary_hcd(hcd)) { | |
2213 | the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); | |
2214 | the_controller.hs_hcd->dum = &the_controller; | |
1cd8fd28 TB |
2215 | /* |
2216 | * Mark the first roothub as being USB 2.0. | |
2217 | * The USB 3.0 roothub will be registered later by | |
2218 | * dummy_hcd_probe() | |
2219 | */ | |
cdfcbd2c TB |
2220 | hcd->speed = HCD_USB2; |
2221 | hcd->self.root_hub->speed = USB_SPEED_HIGH; | |
1cd8fd28 TB |
2222 | } else { |
2223 | the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); | |
2224 | the_controller.ss_hcd->dum = &the_controller; | |
2225 | hcd->speed = HCD_USB3; | |
2226 | hcd->self.root_hub->speed = USB_SPEED_SUPER; | |
cdfcbd2c TB |
2227 | } |
2228 | return 0; | |
2229 | } | |
2230 | ||
1cd8fd28 TB |
2231 | /* Change a group of bulk endpoints to support multiple stream IDs */ |
2232 | int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, | |
2233 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
2234 | unsigned int num_streams, gfp_t mem_flags) | |
2235 | { | |
2236 | if (hcd->speed != HCD_USB3) | |
2237 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), | |
2238 | "%s() - ERROR! Not supported for USB2.0 roothub\n", | |
2239 | __func__); | |
2240 | return 0; | |
2241 | } | |
2242 | ||
2243 | /* Reverts a group of bulk endpoints back to not using stream IDs. */ | |
2244 | int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, | |
2245 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
2246 | gfp_t mem_flags) | |
2247 | { | |
2248 | if (hcd->speed != HCD_USB3) | |
2249 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), | |
2250 | "%s() - ERROR! Not supported for USB2.0 roothub\n", | |
2251 | __func__); | |
2252 | return 0; | |
2253 | } | |
2254 | ||
2255 | static struct hc_driver dummy_hcd = { | |
1da177e4 LT |
2256 | .description = (char *) driver_name, |
2257 | .product_desc = "Dummy host controller", | |
cdfcbd2c | 2258 | .hcd_priv_size = sizeof(struct dummy_hcd), |
1da177e4 | 2259 | |
1cd8fd28 | 2260 | .flags = HCD_USB3 | HCD_SHARED, |
1da177e4 | 2261 | |
cdfcbd2c | 2262 | .reset = dummy_setup, |
1da177e4 LT |
2263 | .start = dummy_start, |
2264 | .stop = dummy_stop, | |
2265 | ||
2266 | .urb_enqueue = dummy_urb_enqueue, | |
2267 | .urb_dequeue = dummy_urb_dequeue, | |
2268 | ||
2269 | .get_frame_number = dummy_h_get_frame, | |
2270 | ||
2271 | .hub_status_data = dummy_hub_status, | |
2272 | .hub_control = dummy_hub_control, | |
0c0382e3 AS |
2273 | .bus_suspend = dummy_bus_suspend, |
2274 | .bus_resume = dummy_bus_resume, | |
1cd8fd28 TB |
2275 | |
2276 | .alloc_streams = dummy_alloc_streams, | |
2277 | .free_streams = dummy_free_streams, | |
1da177e4 LT |
2278 | }; |
2279 | ||
8364d6b0 | 2280 | static int dummy_hcd_probe(struct platform_device *pdev) |
1da177e4 | 2281 | { |
cdfcbd2c | 2282 | struct usb_hcd *hs_hcd; |
1cd8fd28 | 2283 | struct usb_hcd *ss_hcd; |
1da177e4 LT |
2284 | int retval; |
2285 | ||
8364d6b0 | 2286 | dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); |
1da177e4 | 2287 | |
1cd8fd28 TB |
2288 | if (!mod_data.is_super_speed) |
2289 | dummy_hcd.flags = HCD_USB2; | |
cdfcbd2c TB |
2290 | hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); |
2291 | if (!hs_hcd) | |
1da177e4 | 2292 | return -ENOMEM; |
cdfcbd2c | 2293 | hs_hcd->has_tt = 1; |
1da177e4 | 2294 | |
cdfcbd2c | 2295 | retval = usb_add_hcd(hs_hcd, 0, 0); |
1da177e4 | 2296 | if (retval != 0) { |
cdfcbd2c | 2297 | usb_put_hcd(hs_hcd); |
1cd8fd28 | 2298 | return retval; |
1da177e4 | 2299 | } |
1cd8fd28 TB |
2300 | |
2301 | if (mod_data.is_super_speed) { | |
2302 | ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, | |
2303 | dev_name(&pdev->dev), hs_hcd); | |
2304 | if (!ss_hcd) { | |
2305 | retval = -ENOMEM; | |
2306 | goto dealloc_usb2_hcd; | |
2307 | } | |
2308 | ||
2309 | retval = usb_add_hcd(ss_hcd, 0, 0); | |
2310 | if (retval) | |
2311 | goto put_usb3_hcd; | |
2312 | } | |
2313 | return 0; | |
2314 | ||
2315 | put_usb3_hcd: | |
2316 | usb_put_hcd(ss_hcd); | |
2317 | dealloc_usb2_hcd: | |
2318 | usb_put_hcd(hs_hcd); | |
2319 | the_controller.hs_hcd = the_controller.ss_hcd = NULL; | |
1da177e4 LT |
2320 | return retval; |
2321 | } | |
2322 | ||
cdfcbd2c | 2323 | static int dummy_hcd_remove(struct platform_device *pdev) |
1da177e4 | 2324 | { |
cdfcbd2c TB |
2325 | struct dummy *dum; |
2326 | ||
2327 | dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; | |
1cd8fd28 TB |
2328 | |
2329 | if (dum->ss_hcd) { | |
2330 | usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2331 | usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2332 | } | |
2333 | ||
cdfcbd2c TB |
2334 | usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
2335 | usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); | |
1cd8fd28 | 2336 | |
cdfcbd2c | 2337 | the_controller.hs_hcd = NULL; |
1cd8fd28 | 2338 | the_controller.ss_hcd = NULL; |
1da177e4 | 2339 | |
d9b76251 | 2340 | return 0; |
1da177e4 LT |
2341 | } |
2342 | ||
8364d6b0 | 2343 | static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) |
391eca9d AS |
2344 | { |
2345 | struct usb_hcd *hcd; | |
cdfcbd2c | 2346 | struct dummy_hcd *dum_hcd; |
3cf0a22e | 2347 | int rc = 0; |
391eca9d | 2348 | |
441b62c1 | 2349 | dev_dbg (&pdev->dev, "%s\n", __func__); |
391eca9d | 2350 | |
3cf0a22e | 2351 | hcd = platform_get_drvdata (pdev); |
cdfcbd2c TB |
2352 | dum_hcd = hcd_to_dummy_hcd(hcd); |
2353 | if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
3cf0a22e AS |
2354 | dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); |
2355 | rc = -EBUSY; | |
2356 | } else | |
2357 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
2358 | return rc; | |
391eca9d AS |
2359 | } |
2360 | ||
8364d6b0 | 2361 | static int dummy_hcd_resume (struct platform_device *pdev) |
391eca9d AS |
2362 | { |
2363 | struct usb_hcd *hcd; | |
2364 | ||
441b62c1 | 2365 | dev_dbg (&pdev->dev, "%s\n", __func__); |
391eca9d | 2366 | |
3cf0a22e AS |
2367 | hcd = platform_get_drvdata (pdev); |
2368 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
391eca9d AS |
2369 | usb_hcd_poll_rh_status (hcd); |
2370 | return 0; | |
2371 | } | |
2372 | ||
3ae5eaec | 2373 | static struct platform_driver dummy_hcd_driver = { |
d9b76251 AS |
2374 | .probe = dummy_hcd_probe, |
2375 | .remove = dummy_hcd_remove, | |
391eca9d AS |
2376 | .suspend = dummy_hcd_suspend, |
2377 | .resume = dummy_hcd_resume, | |
3ae5eaec RK |
2378 | .driver = { |
2379 | .name = (char *) driver_name, | |
2380 | .owner = THIS_MODULE, | |
2381 | }, | |
d9b76251 | 2382 | }; |
1da177e4 | 2383 | |
d9b76251 | 2384 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 2385 | |
a89a2cd3 AS |
2386 | static struct platform_device *the_udc_pdev; |
2387 | static struct platform_device *the_hcd_pdev; | |
1da177e4 LT |
2388 | |
2389 | static int __init init (void) | |
2390 | { | |
a89a2cd3 | 2391 | int retval = -ENOMEM; |
1da177e4 LT |
2392 | |
2393 | if (usb_disabled ()) | |
2394 | return -ENODEV; | |
d9b76251 | 2395 | |
7eca4c5a TB |
2396 | if (!mod_data.is_high_speed && mod_data.is_super_speed) |
2397 | return -EINVAL; | |
2398 | ||
a89a2cd3 AS |
2399 | the_hcd_pdev = platform_device_alloc(driver_name, -1); |
2400 | if (!the_hcd_pdev) | |
1da177e4 | 2401 | return retval; |
a89a2cd3 AS |
2402 | the_udc_pdev = platform_device_alloc(gadget_name, -1); |
2403 | if (!the_udc_pdev) | |
2404 | goto err_alloc_udc; | |
d9b76251 | 2405 | |
a89a2cd3 AS |
2406 | retval = platform_driver_register(&dummy_hcd_driver); |
2407 | if (retval < 0) | |
2408 | goto err_register_hcd_driver; | |
2409 | retval = platform_driver_register(&dummy_udc_driver); | |
d9b76251 AS |
2410 | if (retval < 0) |
2411 | goto err_register_udc_driver; | |
2412 | ||
a89a2cd3 | 2413 | retval = platform_device_add(the_hcd_pdev); |
d9b76251 | 2414 | if (retval < 0) |
a89a2cd3 | 2415 | goto err_add_hcd; |
1cd8fd28 TB |
2416 | if (!the_controller.hs_hcd || |
2417 | (!the_controller.ss_hcd && mod_data.is_super_speed)) { | |
865835fa SAS |
2418 | /* |
2419 | * The hcd was added successfully but its probe function failed | |
2420 | * for some reason. | |
2421 | */ | |
2422 | retval = -EINVAL; | |
2423 | goto err_add_udc; | |
2424 | } | |
a89a2cd3 | 2425 | retval = platform_device_add(the_udc_pdev); |
d9b76251 | 2426 | if (retval < 0) |
a89a2cd3 | 2427 | goto err_add_udc; |
865835fa SAS |
2428 | if (!platform_get_drvdata(the_udc_pdev)) { |
2429 | /* | |
2430 | * The udc was added successfully but its probe function failed | |
2431 | * for some reason. | |
2432 | */ | |
2433 | retval = -EINVAL; | |
2434 | goto err_probe_udc; | |
2435 | } | |
d9b76251 AS |
2436 | return retval; |
2437 | ||
865835fa SAS |
2438 | err_probe_udc: |
2439 | platform_device_del(the_udc_pdev); | |
a89a2cd3 AS |
2440 | err_add_udc: |
2441 | platform_device_del(the_hcd_pdev); | |
2442 | err_add_hcd: | |
2443 | platform_driver_unregister(&dummy_udc_driver); | |
d9b76251 | 2444 | err_register_udc_driver: |
a89a2cd3 AS |
2445 | platform_driver_unregister(&dummy_hcd_driver); |
2446 | err_register_hcd_driver: | |
2447 | platform_device_put(the_udc_pdev); | |
2448 | err_alloc_udc: | |
2449 | platform_device_put(the_hcd_pdev); | |
1da177e4 LT |
2450 | return retval; |
2451 | } | |
2452 | module_init (init); | |
2453 | ||
2454 | static void __exit cleanup (void) | |
2455 | { | |
a89a2cd3 AS |
2456 | platform_device_unregister(the_udc_pdev); |
2457 | platform_device_unregister(the_hcd_pdev); | |
2458 | platform_driver_unregister(&dummy_udc_driver); | |
2459 | platform_driver_unregister(&dummy_hcd_driver); | |
1da177e4 LT |
2460 | } |
2461 | module_exit (cleanup); |