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. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | ||
25 | /* | |
26 | * This exposes a device side "USB gadget" API, driven by requests to a | |
27 | * Linux-USB host controller driver. USB traffic is simulated; there's | |
28 | * no need for USB hardware. Use this with two other drivers: | |
29 | * | |
30 | * - Gadget driver, responding to requests (slave); | |
31 | * - Host-side device driver, as already familiar in Linux. | |
32 | * | |
33 | * Having this all in one kernel can help some stages of development, | |
34 | * bypassing some hardware (and driver) issues. UML could help too. | |
35 | */ | |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | #include <linux/kernel.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/ioport.h> | |
1da177e4 | 41 | #include <linux/slab.h> |
1da177e4 LT |
42 | #include <linux/errno.h> |
43 | #include <linux/init.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/list.h> | |
46 | #include <linux/interrupt.h> | |
d052d1be | 47 | #include <linux/platform_device.h> |
1da177e4 | 48 | #include <linux/usb.h> |
9454a57a | 49 | #include <linux/usb/gadget.h> |
27729aad | 50 | #include <linux/usb/hcd.h> |
1da177e4 LT |
51 | |
52 | #include <asm/byteorder.h> | |
53 | #include <asm/io.h> | |
54 | #include <asm/irq.h> | |
55 | #include <asm/system.h> | |
56 | #include <asm/unaligned.h> | |
57 | ||
58 | ||
1da177e4 | 59 | #define DRIVER_DESC "USB Host+Gadget Emulator" |
391eca9d | 60 | #define DRIVER_VERSION "02 May 2005" |
1da177e4 | 61 | |
caf29f62 AS |
62 | #define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ |
63 | ||
1da177e4 LT |
64 | static const char driver_name [] = "dummy_hcd"; |
65 | static const char driver_desc [] = "USB Host+Gadget Emulator"; | |
66 | ||
67 | static const char gadget_name [] = "dummy_udc"; | |
68 | ||
69 | MODULE_DESCRIPTION (DRIVER_DESC); | |
70 | MODULE_AUTHOR ("David Brownell"); | |
71 | MODULE_LICENSE ("GPL"); | |
72 | ||
1cd8fd28 TB |
73 | struct dummy_hcd_module_parameters { |
74 | bool is_super_speed; | |
7eca4c5a | 75 | bool is_high_speed; |
1cd8fd28 TB |
76 | }; |
77 | ||
78 | static struct dummy_hcd_module_parameters mod_data = { | |
7eca4c5a TB |
79 | .is_super_speed = false, |
80 | .is_high_speed = true, | |
1cd8fd28 TB |
81 | }; |
82 | module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); | |
83 | MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); | |
7eca4c5a TB |
84 | module_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); |
85 | MODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); | |
1da177e4 LT |
86 | /*-------------------------------------------------------------------------*/ |
87 | ||
88 | /* gadget side driver data structres */ | |
89 | struct dummy_ep { | |
90 | struct list_head queue; | |
91 | unsigned long last_io; /* jiffies timestamp */ | |
92 | struct usb_gadget *gadget; | |
93 | const struct usb_endpoint_descriptor *desc; | |
94 | struct usb_ep ep; | |
95 | unsigned halted : 1; | |
851a526d | 96 | unsigned wedged : 1; |
1da177e4 LT |
97 | unsigned already_seen : 1; |
98 | unsigned setup_stage : 1; | |
99 | }; | |
100 | ||
101 | struct dummy_request { | |
102 | struct list_head queue; /* ep's requests */ | |
103 | struct usb_request req; | |
104 | }; | |
105 | ||
106 | static inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) | |
107 | { | |
108 | return container_of (_ep, struct dummy_ep, ep); | |
109 | } | |
110 | ||
111 | static inline struct dummy_request *usb_request_to_dummy_request | |
112 | (struct usb_request *_req) | |
113 | { | |
114 | return container_of (_req, struct dummy_request, req); | |
115 | } | |
116 | ||
117 | /*-------------------------------------------------------------------------*/ | |
118 | ||
119 | /* | |
120 | * Every device has ep0 for control requests, plus up to 30 more endpoints, | |
121 | * in one of two types: | |
122 | * | |
123 | * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint | |
124 | * number can be changed. Names like "ep-a" are used for this type. | |
125 | * | |
126 | * - Fixed Function: in other cases. some characteristics may be mutable; | |
127 | * that'd be hardware-specific. Names like "ep12out-bulk" are used. | |
128 | * | |
129 | * Gadget drivers are responsible for not setting up conflicting endpoint | |
130 | * configurations, illegal or unsupported packet lengths, and so on. | |
131 | */ | |
132 | ||
133 | static const char ep0name [] = "ep0"; | |
134 | ||
135 | static const char *const ep_name [] = { | |
136 | ep0name, /* everyone has ep0 */ | |
137 | ||
138 | /* act like a net2280: high speed, six configurable endpoints */ | |
139 | "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", | |
140 | ||
141 | /* or like pxa250: fifteen fixed function endpoints */ | |
142 | "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", | |
143 | "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", | |
144 | "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", | |
145 | "ep15in-int", | |
146 | ||
147 | /* or like sa1100: two fixed function endpoints */ | |
148 | "ep1out-bulk", "ep2in-bulk", | |
149 | }; | |
52950ed4 | 150 | #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) |
1da177e4 | 151 | |
d9b76251 AS |
152 | /*-------------------------------------------------------------------------*/ |
153 | ||
1da177e4 LT |
154 | #define FIFO_SIZE 64 |
155 | ||
156 | struct urbp { | |
157 | struct urb *urb; | |
158 | struct list_head urbp_list; | |
159 | }; | |
160 | ||
391eca9d AS |
161 | |
162 | enum dummy_rh_state { | |
163 | DUMMY_RH_RESET, | |
164 | DUMMY_RH_SUSPENDED, | |
165 | DUMMY_RH_RUNNING | |
166 | }; | |
167 | ||
cdfcbd2c TB |
168 | struct dummy_hcd { |
169 | struct dummy *dum; | |
170 | enum dummy_rh_state rh_state; | |
171 | struct timer_list timer; | |
172 | u32 port_status; | |
173 | u32 old_status; | |
174 | unsigned long re_timeout; | |
175 | ||
176 | struct usb_device *udev; | |
177 | struct list_head urbp_list; | |
178 | ||
179 | unsigned active:1; | |
180 | unsigned old_active:1; | |
181 | unsigned resuming:1; | |
182 | }; | |
183 | ||
1da177e4 LT |
184 | struct dummy { |
185 | spinlock_t lock; | |
186 | ||
187 | /* | |
188 | * SLAVE/GADGET side support | |
189 | */ | |
190 | struct dummy_ep ep [DUMMY_ENDPOINTS]; | |
191 | int address; | |
192 | struct usb_gadget gadget; | |
193 | struct usb_gadget_driver *driver; | |
194 | struct dummy_request fifo_req; | |
195 | u8 fifo_buf [FIFO_SIZE]; | |
196 | u16 devstatus; | |
391eca9d | 197 | unsigned udc_suspended:1; |
f1c39fad | 198 | unsigned pullup:1; |
1da177e4 LT |
199 | |
200 | /* | |
201 | * MASTER/HOST side support | |
202 | */ | |
cdfcbd2c | 203 | struct dummy_hcd *hs_hcd; |
1cd8fd28 | 204 | struct dummy_hcd *ss_hcd; |
1da177e4 LT |
205 | }; |
206 | ||
cdfcbd2c | 207 | static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) |
1da177e4 | 208 | { |
cdfcbd2c | 209 | return (struct dummy_hcd *) (hcd->hcd_priv); |
1da177e4 LT |
210 | } |
211 | ||
cdfcbd2c | 212 | static inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) |
1da177e4 LT |
213 | { |
214 | return container_of((void *) dum, struct usb_hcd, hcd_priv); | |
215 | } | |
216 | ||
cdfcbd2c | 217 | static inline struct device *dummy_dev(struct dummy_hcd *dum) |
1da177e4 | 218 | { |
cdfcbd2c | 219 | return dummy_hcd_to_hcd(dum)->self.controller; |
1da177e4 LT |
220 | } |
221 | ||
d9b76251 AS |
222 | static inline struct device *udc_dev (struct dummy *dum) |
223 | { | |
224 | return dum->gadget.dev.parent; | |
225 | } | |
226 | ||
1da177e4 LT |
227 | static inline struct dummy *ep_to_dummy (struct dummy_ep *ep) |
228 | { | |
229 | return container_of (ep->gadget, struct dummy, gadget); | |
230 | } | |
231 | ||
cdfcbd2c | 232 | static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) |
1da177e4 | 233 | { |
cdfcbd2c | 234 | struct dummy *dum = container_of(gadget, struct dummy, gadget); |
1cd8fd28 TB |
235 | if (dum->gadget.speed == USB_SPEED_SUPER) |
236 | return dum->ss_hcd; | |
237 | else | |
238 | return dum->hs_hcd; | |
1da177e4 LT |
239 | } |
240 | ||
241 | static inline struct dummy *gadget_dev_to_dummy (struct device *dev) | |
242 | { | |
243 | return container_of (dev, struct dummy, gadget.dev); | |
244 | } | |
245 | ||
cdfcbd2c | 246 | static struct dummy the_controller; |
1da177e4 LT |
247 | |
248 | /*-------------------------------------------------------------------------*/ | |
249 | ||
f1c39fad AS |
250 | /* SLAVE/GADGET SIDE UTILITY ROUTINES */ |
251 | ||
252 | /* called with spinlock held */ | |
253 | static void nuke (struct dummy *dum, struct dummy_ep *ep) | |
254 | { | |
255 | while (!list_empty (&ep->queue)) { | |
256 | struct dummy_request *req; | |
257 | ||
258 | req = list_entry (ep->queue.next, struct dummy_request, queue); | |
259 | list_del_init (&req->queue); | |
260 | req->req.status = -ESHUTDOWN; | |
261 | ||
262 | spin_unlock (&dum->lock); | |
263 | req->req.complete (&ep->ep, &req->req); | |
264 | spin_lock (&dum->lock); | |
265 | } | |
266 | } | |
267 | ||
268 | /* caller must hold lock */ | |
269 | static void | |
270 | stop_activity (struct dummy *dum) | |
271 | { | |
272 | struct dummy_ep *ep; | |
273 | ||
274 | /* prevent any more requests */ | |
275 | dum->address = 0; | |
276 | ||
277 | /* The timer is left running so that outstanding URBs can fail */ | |
278 | ||
279 | /* nuke any pending requests first, so driver i/o is quiesced */ | |
280 | list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) | |
281 | nuke (dum, ep); | |
282 | ||
283 | /* driver now does any non-usb quiescing necessary */ | |
284 | } | |
285 | ||
1cd8fd28 TB |
286 | /** |
287 | * set_link_state_by_speed() - Sets the current state of the link according to | |
288 | * the hcd speed | |
289 | * @dum_hcd: pointer to the dummy_hcd structure to update the link state for | |
290 | * | |
291 | * This function updates the port_status according to the link state and the | |
292 | * speed of the hcd. | |
293 | */ | |
294 | static void set_link_state_by_speed(struct dummy_hcd *dum_hcd) | |
295 | { | |
296 | struct dummy *dum = dum_hcd->dum; | |
297 | ||
298 | if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { | |
299 | if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { | |
300 | dum_hcd->port_status = 0; | |
301 | } else if (!dum->pullup || dum->udc_suspended) { | |
302 | /* UDC suspend must cause a disconnect */ | |
303 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
304 | USB_PORT_STAT_ENABLE); | |
305 | if ((dum_hcd->old_status & | |
306 | USB_PORT_STAT_CONNECTION) != 0) | |
307 | dum_hcd->port_status |= | |
308 | (USB_PORT_STAT_C_CONNECTION << 16); | |
309 | } else { | |
310 | /* device is connected and not suspended */ | |
311 | dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | | |
312 | USB_PORT_STAT_SPEED_5GBPS) ; | |
313 | if ((dum_hcd->old_status & | |
314 | USB_PORT_STAT_CONNECTION) == 0) | |
315 | dum_hcd->port_status |= | |
316 | (USB_PORT_STAT_C_CONNECTION << 16); | |
317 | if ((dum_hcd->port_status & | |
318 | USB_PORT_STAT_ENABLE) == 1 && | |
319 | (dum_hcd->port_status & | |
320 | USB_SS_PORT_LS_U0) == 1 && | |
321 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
322 | dum_hcd->active = 1; | |
323 | } | |
324 | } else { | |
325 | if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { | |
326 | dum_hcd->port_status = 0; | |
327 | } else if (!dum->pullup || dum->udc_suspended) { | |
328 | /* UDC suspend must cause a disconnect */ | |
329 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
330 | USB_PORT_STAT_ENABLE | | |
331 | USB_PORT_STAT_LOW_SPEED | | |
332 | USB_PORT_STAT_HIGH_SPEED | | |
333 | USB_PORT_STAT_SUSPEND); | |
334 | if ((dum_hcd->old_status & | |
335 | USB_PORT_STAT_CONNECTION) != 0) | |
336 | dum_hcd->port_status |= | |
337 | (USB_PORT_STAT_C_CONNECTION << 16); | |
338 | } else { | |
339 | dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; | |
340 | if ((dum_hcd->old_status & | |
341 | USB_PORT_STAT_CONNECTION) == 0) | |
342 | dum_hcd->port_status |= | |
343 | (USB_PORT_STAT_C_CONNECTION << 16); | |
344 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) | |
345 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
346 | else if ((dum_hcd->port_status & | |
347 | USB_PORT_STAT_SUSPEND) == 0 && | |
348 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
349 | dum_hcd->active = 1; | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
f1c39fad | 354 | /* caller must hold lock */ |
cdfcbd2c | 355 | static void set_link_state(struct dummy_hcd *dum_hcd) |
f1c39fad | 356 | { |
cdfcbd2c TB |
357 | struct dummy *dum = dum_hcd->dum; |
358 | ||
359 | dum_hcd->active = 0; | |
1cd8fd28 TB |
360 | if (dum->pullup) |
361 | if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && | |
362 | dum->gadget.speed != USB_SPEED_SUPER) || | |
363 | (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && | |
364 | dum->gadget.speed == USB_SPEED_SUPER)) | |
365 | return; | |
366 | ||
367 | set_link_state_by_speed(dum_hcd); | |
f1c39fad | 368 | |
cdfcbd2c TB |
369 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || |
370 | dum_hcd->active) | |
371 | dum_hcd->resuming = 0; | |
f1c39fad | 372 | |
1cd8fd28 | 373 | /* if !connected or reset */ |
cdfcbd2c TB |
374 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || |
375 | (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { | |
1cd8fd28 TB |
376 | /* |
377 | * We're connected and not reset (reset occurred now), | |
378 | * and driver attached - disconnect! | |
379 | */ | |
cdfcbd2c | 380 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && |
1cd8fd28 TB |
381 | (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && |
382 | dum->driver) { | |
383 | stop_activity(dum); | |
384 | spin_unlock(&dum->lock); | |
385 | dum->driver->disconnect(&dum->gadget); | |
386 | spin_lock(&dum->lock); | |
f1c39fad | 387 | } |
cdfcbd2c TB |
388 | } else if (dum_hcd->active != dum_hcd->old_active) { |
389 | if (dum_hcd->old_active && dum->driver->suspend) { | |
1cd8fd28 TB |
390 | spin_unlock(&dum->lock); |
391 | dum->driver->suspend(&dum->gadget); | |
392 | spin_lock(&dum->lock); | |
393 | } else if (!dum_hcd->old_active && dum->driver->resume) { | |
394 | spin_unlock(&dum->lock); | |
395 | dum->driver->resume(&dum->gadget); | |
396 | spin_lock(&dum->lock); | |
f1c39fad AS |
397 | } |
398 | } | |
399 | ||
cdfcbd2c TB |
400 | dum_hcd->old_status = dum_hcd->port_status; |
401 | dum_hcd->old_active = dum_hcd->active; | |
f1c39fad AS |
402 | } |
403 | ||
404 | /*-------------------------------------------------------------------------*/ | |
405 | ||
1da177e4 LT |
406 | /* SLAVE/GADGET SIDE DRIVER |
407 | * | |
408 | * This only tracks gadget state. All the work is done when the host | |
409 | * side tries some (emulated) i/o operation. Real device controller | |
410 | * drivers would do real i/o using dma, fifos, irqs, timers, etc. | |
411 | */ | |
412 | ||
413 | #define is_enabled(dum) \ | |
414 | (dum->port_status & USB_PORT_STAT_ENABLE) | |
415 | ||
416 | static int | |
417 | dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) | |
418 | { | |
419 | struct dummy *dum; | |
cdfcbd2c | 420 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
421 | struct dummy_ep *ep; |
422 | unsigned max; | |
423 | int retval; | |
424 | ||
425 | ep = usb_ep_to_dummy_ep (_ep); | |
426 | if (!_ep || !desc || ep->desc || _ep->name == ep0name | |
427 | || desc->bDescriptorType != USB_DT_ENDPOINT) | |
428 | return -EINVAL; | |
429 | dum = ep_to_dummy (ep); | |
cdfcbd2c TB |
430 | if (!dum->driver) |
431 | return -ESHUTDOWN; | |
719e52cb SAS |
432 | |
433 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
cdfcbd2c | 434 | if (!is_enabled(dum_hcd)) |
1da177e4 | 435 | return -ESHUTDOWN; |
cdfcbd2c TB |
436 | |
437 | /* | |
438 | * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the | |
439 | * maximum packet size. | |
1cd8fd28 | 440 | * For SS devices the wMaxPacketSize is limited by 1024. |
cdfcbd2c | 441 | */ |
29cc8897 | 442 | max = usb_endpoint_maxp(desc) & 0x7ff; |
1da177e4 LT |
443 | |
444 | /* drivers must not request bad settings, since lower levels | |
445 | * (hardware or its drivers) may not check. some endpoints | |
446 | * can't do iso, many have maxpacket limitations, etc. | |
447 | * | |
448 | * since this "hardware" driver is here to help debugging, we | |
449 | * have some extra sanity checks. (there could be more though, | |
450 | * especially for "ep9out" style fixed function ones.) | |
451 | */ | |
452 | retval = -EINVAL; | |
453 | switch (desc->bmAttributes & 0x03) { | |
454 | case USB_ENDPOINT_XFER_BULK: | |
455 | if (strstr (ep->ep.name, "-iso") | |
456 | || strstr (ep->ep.name, "-int")) { | |
457 | goto done; | |
458 | } | |
459 | switch (dum->gadget.speed) { | |
1cd8fd28 TB |
460 | case USB_SPEED_SUPER: |
461 | if (max == 1024) | |
462 | break; | |
463 | goto done; | |
1da177e4 LT |
464 | case USB_SPEED_HIGH: |
465 | if (max == 512) | |
466 | break; | |
9063ff44 IL |
467 | goto done; |
468 | case USB_SPEED_FULL: | |
469 | if (max == 8 || max == 16 || max == 32 || max == 64) | |
1da177e4 LT |
470 | /* we'll fake any legal size */ |
471 | break; | |
9063ff44 IL |
472 | /* save a return statement */ |
473 | default: | |
474 | goto done; | |
1da177e4 LT |
475 | } |
476 | break; | |
477 | case USB_ENDPOINT_XFER_INT: | |
478 | if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ | |
479 | goto done; | |
480 | /* real hardware might not handle all packet sizes */ | |
481 | switch (dum->gadget.speed) { | |
1cd8fd28 | 482 | case USB_SPEED_SUPER: |
1da177e4 LT |
483 | case USB_SPEED_HIGH: |
484 | if (max <= 1024) | |
485 | break; | |
486 | /* save a return statement */ | |
487 | case USB_SPEED_FULL: | |
488 | if (max <= 64) | |
489 | break; | |
490 | /* save a return statement */ | |
491 | default: | |
492 | if (max <= 8) | |
493 | break; | |
494 | goto done; | |
495 | } | |
496 | break; | |
497 | case USB_ENDPOINT_XFER_ISOC: | |
498 | if (strstr (ep->ep.name, "-bulk") | |
499 | || strstr (ep->ep.name, "-int")) | |
500 | goto done; | |
501 | /* real hardware might not handle all packet sizes */ | |
502 | switch (dum->gadget.speed) { | |
1cd8fd28 | 503 | case USB_SPEED_SUPER: |
1da177e4 LT |
504 | case USB_SPEED_HIGH: |
505 | if (max <= 1024) | |
506 | break; | |
507 | /* save a return statement */ | |
508 | case USB_SPEED_FULL: | |
509 | if (max <= 1023) | |
510 | break; | |
511 | /* save a return statement */ | |
512 | default: | |
513 | goto done; | |
514 | } | |
515 | break; | |
516 | default: | |
517 | /* few chips support control except on ep0 */ | |
518 | goto done; | |
519 | } | |
520 | ||
521 | _ep->maxpacket = max; | |
522 | ep->desc = desc; | |
523 | ||
d9b76251 | 524 | dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", |
1da177e4 LT |
525 | _ep->name, |
526 | desc->bEndpointAddress & 0x0f, | |
527 | (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", | |
528 | ({ char *val; | |
529 | switch (desc->bmAttributes & 0x03) { | |
7c884fe4 TB |
530 | case USB_ENDPOINT_XFER_BULK: |
531 | val = "bulk"; | |
532 | break; | |
533 | case USB_ENDPOINT_XFER_ISOC: | |
534 | val = "iso"; | |
535 | break; | |
536 | case USB_ENDPOINT_XFER_INT: | |
537 | val = "intr"; | |
538 | break; | |
539 | default: | |
540 | val = "ctrl"; | |
541 | break; | |
1da177e4 LT |
542 | }; val; }), |
543 | max); | |
544 | ||
545 | /* at this point real hardware should be NAKing transfers | |
546 | * to that endpoint, until a buffer is queued to it. | |
547 | */ | |
851a526d | 548 | ep->halted = ep->wedged = 0; |
1da177e4 LT |
549 | retval = 0; |
550 | done: | |
551 | return retval; | |
552 | } | |
553 | ||
1da177e4 LT |
554 | static int dummy_disable (struct usb_ep *_ep) |
555 | { | |
556 | struct dummy_ep *ep; | |
557 | struct dummy *dum; | |
558 | unsigned long flags; | |
559 | int retval; | |
560 | ||
561 | ep = usb_ep_to_dummy_ep (_ep); | |
562 | if (!_ep || !ep->desc || _ep->name == ep0name) | |
563 | return -EINVAL; | |
564 | dum = ep_to_dummy (ep); | |
565 | ||
566 | spin_lock_irqsave (&dum->lock, flags); | |
567 | ep->desc = NULL; | |
568 | retval = 0; | |
569 | nuke (dum, ep); | |
570 | spin_unlock_irqrestore (&dum->lock, flags); | |
571 | ||
d9b76251 | 572 | dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); |
1da177e4 LT |
573 | return retval; |
574 | } | |
575 | ||
576 | static struct usb_request * | |
55016f10 | 577 | dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) |
1da177e4 LT |
578 | { |
579 | struct dummy_ep *ep; | |
580 | struct dummy_request *req; | |
581 | ||
582 | if (!_ep) | |
583 | return NULL; | |
584 | ep = usb_ep_to_dummy_ep (_ep); | |
585 | ||
7039f422 | 586 | req = kzalloc(sizeof(*req), mem_flags); |
1da177e4 LT |
587 | if (!req) |
588 | return NULL; | |
1da177e4 LT |
589 | INIT_LIST_HEAD (&req->queue); |
590 | return &req->req; | |
591 | } | |
592 | ||
593 | static void | |
594 | dummy_free_request (struct usb_ep *_ep, struct usb_request *_req) | |
595 | { | |
596 | struct dummy_ep *ep; | |
597 | struct dummy_request *req; | |
598 | ||
599 | ep = usb_ep_to_dummy_ep (_ep); | |
600 | if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) | |
601 | return; | |
602 | ||
603 | req = usb_request_to_dummy_request (_req); | |
604 | WARN_ON (!list_empty (&req->queue)); | |
605 | kfree (req); | |
606 | } | |
607 | ||
1da177e4 LT |
608 | static void |
609 | fifo_complete (struct usb_ep *ep, struct usb_request *req) | |
610 | { | |
611 | } | |
612 | ||
613 | static int | |
5db539e4 | 614 | dummy_queue (struct usb_ep *_ep, struct usb_request *_req, |
55016f10 | 615 | gfp_t mem_flags) |
1da177e4 LT |
616 | { |
617 | struct dummy_ep *ep; | |
618 | struct dummy_request *req; | |
619 | struct dummy *dum; | |
cdfcbd2c | 620 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
621 | unsigned long flags; |
622 | ||
623 | req = usb_request_to_dummy_request (_req); | |
624 | if (!_req || !list_empty (&req->queue) || !_req->complete) | |
625 | return -EINVAL; | |
626 | ||
627 | ep = usb_ep_to_dummy_ep (_ep); | |
628 | if (!_ep || (!ep->desc && _ep->name != ep0name)) | |
629 | return -EINVAL; | |
630 | ||
631 | dum = ep_to_dummy (ep); | |
719e52cb | 632 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); |
cdfcbd2c | 633 | if (!dum->driver || !is_enabled(dum_hcd)) |
1da177e4 LT |
634 | return -ESHUTDOWN; |
635 | ||
636 | #if 0 | |
d9b76251 | 637 | dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", |
1da177e4 LT |
638 | ep, _req, _ep->name, _req->length, _req->buf); |
639 | #endif | |
640 | ||
641 | _req->status = -EINPROGRESS; | |
642 | _req->actual = 0; | |
643 | spin_lock_irqsave (&dum->lock, flags); | |
644 | ||
645 | /* implement an emulated single-request FIFO */ | |
646 | if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && | |
647 | list_empty (&dum->fifo_req.queue) && | |
648 | list_empty (&ep->queue) && | |
649 | _req->length <= FIFO_SIZE) { | |
650 | req = &dum->fifo_req; | |
651 | req->req = *_req; | |
652 | req->req.buf = dum->fifo_buf; | |
653 | memcpy (dum->fifo_buf, _req->buf, _req->length); | |
654 | req->req.context = dum; | |
655 | req->req.complete = fifo_complete; | |
656 | ||
c728df70 | 657 | list_add_tail(&req->queue, &ep->queue); |
1da177e4 LT |
658 | spin_unlock (&dum->lock); |
659 | _req->actual = _req->length; | |
660 | _req->status = 0; | |
661 | _req->complete (_ep, _req); | |
662 | spin_lock (&dum->lock); | |
c728df70 DB |
663 | } else |
664 | list_add_tail(&req->queue, &ep->queue); | |
1da177e4 LT |
665 | spin_unlock_irqrestore (&dum->lock, flags); |
666 | ||
667 | /* real hardware would likely enable transfers here, in case | |
668 | * it'd been left NAKing. | |
669 | */ | |
670 | return 0; | |
671 | } | |
672 | ||
673 | static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) | |
674 | { | |
675 | struct dummy_ep *ep; | |
676 | struct dummy *dum; | |
677 | int retval = -EINVAL; | |
678 | unsigned long flags; | |
679 | struct dummy_request *req = NULL; | |
680 | ||
681 | if (!_ep || !_req) | |
682 | return retval; | |
683 | ep = usb_ep_to_dummy_ep (_ep); | |
684 | dum = ep_to_dummy (ep); | |
685 | ||
686 | if (!dum->driver) | |
687 | return -ESHUTDOWN; | |
688 | ||
b4dbda1a AS |
689 | local_irq_save (flags); |
690 | spin_lock (&dum->lock); | |
1da177e4 LT |
691 | list_for_each_entry (req, &ep->queue, queue) { |
692 | if (&req->req == _req) { | |
693 | list_del_init (&req->queue); | |
694 | _req->status = -ECONNRESET; | |
695 | retval = 0; | |
696 | break; | |
697 | } | |
698 | } | |
b4dbda1a | 699 | spin_unlock (&dum->lock); |
1da177e4 LT |
700 | |
701 | if (retval == 0) { | |
d9b76251 | 702 | dev_dbg (udc_dev(dum), |
1da177e4 LT |
703 | "dequeued req %p from %s, len %d buf %p\n", |
704 | req, _ep->name, _req->length, _req->buf); | |
705 | _req->complete (_ep, _req); | |
706 | } | |
b4dbda1a | 707 | local_irq_restore (flags); |
1da177e4 LT |
708 | return retval; |
709 | } | |
710 | ||
711 | static int | |
851a526d | 712 | dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) |
1da177e4 LT |
713 | { |
714 | struct dummy_ep *ep; | |
715 | struct dummy *dum; | |
716 | ||
717 | if (!_ep) | |
718 | return -EINVAL; | |
719 | ep = usb_ep_to_dummy_ep (_ep); | |
720 | dum = ep_to_dummy (ep); | |
721 | if (!dum->driver) | |
722 | return -ESHUTDOWN; | |
723 | if (!value) | |
851a526d | 724 | ep->halted = ep->wedged = 0; |
1da177e4 LT |
725 | else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
726 | !list_empty (&ep->queue)) | |
727 | return -EAGAIN; | |
851a526d | 728 | else { |
1da177e4 | 729 | ep->halted = 1; |
851a526d AS |
730 | if (wedged) |
731 | ep->wedged = 1; | |
732 | } | |
1da177e4 LT |
733 | /* FIXME clear emulated data toggle too */ |
734 | return 0; | |
735 | } | |
736 | ||
851a526d AS |
737 | static int |
738 | dummy_set_halt(struct usb_ep *_ep, int value) | |
739 | { | |
740 | return dummy_set_halt_and_wedge(_ep, value, 0); | |
741 | } | |
742 | ||
743 | static int dummy_set_wedge(struct usb_ep *_ep) | |
744 | { | |
745 | if (!_ep || _ep->name == ep0name) | |
746 | return -EINVAL; | |
747 | return dummy_set_halt_and_wedge(_ep, 1, 1); | |
748 | } | |
749 | ||
1da177e4 LT |
750 | static const struct usb_ep_ops dummy_ep_ops = { |
751 | .enable = dummy_enable, | |
752 | .disable = dummy_disable, | |
753 | ||
754 | .alloc_request = dummy_alloc_request, | |
755 | .free_request = dummy_free_request, | |
756 | ||
1da177e4 LT |
757 | .queue = dummy_queue, |
758 | .dequeue = dummy_dequeue, | |
759 | ||
760 | .set_halt = dummy_set_halt, | |
851a526d | 761 | .set_wedge = dummy_set_wedge, |
1da177e4 LT |
762 | }; |
763 | ||
764 | /*-------------------------------------------------------------------------*/ | |
765 | ||
766 | /* there are both host and device side versions of this call ... */ | |
767 | static int dummy_g_get_frame (struct usb_gadget *_gadget) | |
768 | { | |
769 | struct timeval tv; | |
770 | ||
771 | do_gettimeofday (&tv); | |
772 | return tv.tv_usec / 1000; | |
773 | } | |
774 | ||
775 | static int dummy_wakeup (struct usb_gadget *_gadget) | |
776 | { | |
cdfcbd2c | 777 | struct dummy_hcd *dum_hcd; |
1da177e4 | 778 | |
cdfcbd2c TB |
779 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
780 | if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) | |
5742b0c9 | 781 | | (1 << USB_DEVICE_REMOTE_WAKEUP)))) |
1da177e4 | 782 | return -EINVAL; |
cdfcbd2c | 783 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) |
391eca9d | 784 | return -ENOLINK; |
cdfcbd2c TB |
785 | if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && |
786 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
391eca9d AS |
787 | return -EIO; |
788 | ||
789 | /* FIXME: What if the root hub is suspended but the port isn't? */ | |
1da177e4 LT |
790 | |
791 | /* hub notices our request, issues downstream resume, etc */ | |
cdfcbd2c TB |
792 | dum_hcd->resuming = 1; |
793 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); | |
794 | mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); | |
1da177e4 LT |
795 | return 0; |
796 | } | |
797 | ||
798 | static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) | |
799 | { | |
800 | struct dummy *dum; | |
801 | ||
cdfcbd2c | 802 | dum = (gadget_to_dummy_hcd(_gadget))->dum; |
1da177e4 LT |
803 | if (value) |
804 | dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); | |
805 | else | |
806 | dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); | |
807 | return 0; | |
808 | } | |
809 | ||
b5738413 SAS |
810 | static void dummy_udc_udpate_ep0(struct dummy *dum) |
811 | { | |
812 | u32 i; | |
813 | ||
814 | if (dum->gadget.speed == USB_SPEED_SUPER) { | |
815 | for (i = 0; i < DUMMY_ENDPOINTS; i++) | |
816 | dum->ep[i].ep.max_streams = 0x10; | |
817 | dum->ep[0].ep.maxpacket = 9; | |
818 | } else { | |
819 | for (i = 0; i < DUMMY_ENDPOINTS; i++) | |
820 | dum->ep[i].ep.max_streams = 0; | |
821 | dum->ep[0].ep.maxpacket = 64; | |
822 | } | |
823 | } | |
824 | ||
f1c39fad AS |
825 | static int dummy_pullup (struct usb_gadget *_gadget, int value) |
826 | { | |
d8a14a85 | 827 | struct dummy_hcd *dum_hcd; |
f1c39fad AS |
828 | struct dummy *dum; |
829 | unsigned long flags; | |
830 | ||
b5738413 SAS |
831 | dum = gadget_dev_to_dummy(&_gadget->dev); |
832 | ||
833 | if (value && dum->driver) { | |
834 | if (mod_data.is_super_speed) | |
835 | dum->gadget.speed = dum->driver->speed; | |
836 | else if (mod_data.is_high_speed) | |
837 | dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, | |
838 | dum->driver->speed); | |
839 | else | |
840 | dum->gadget.speed = USB_SPEED_FULL; | |
841 | dummy_udc_udpate_ep0(dum); | |
842 | ||
843 | if (dum->gadget.speed < dum->driver->speed) | |
844 | dev_dbg(udc_dev(dum), "This device can perform faster" | |
845 | " if you connect it to a %s port...\n", | |
846 | (dum->driver->speed == USB_SPEED_SUPER ? | |
847 | "SuperSpeed" : "HighSpeed")); | |
848 | } | |
d8a14a85 | 849 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
d8a14a85 | 850 | |
f1c39fad AS |
851 | spin_lock_irqsave (&dum->lock, flags); |
852 | dum->pullup = (value != 0); | |
d8a14a85 | 853 | set_link_state(dum_hcd); |
f1c39fad | 854 | spin_unlock_irqrestore (&dum->lock, flags); |
b5738413 | 855 | |
d8a14a85 | 856 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
f1c39fad AS |
857 | return 0; |
858 | } | |
859 | ||
aa074739 SAS |
860 | static int dummy_udc_start(struct usb_gadget *g, |
861 | struct usb_gadget_driver *driver); | |
862 | static int dummy_udc_stop(struct usb_gadget *g, | |
863 | struct usb_gadget_driver *driver); | |
0f91349b | 864 | |
1da177e4 LT |
865 | static const struct usb_gadget_ops dummy_ops = { |
866 | .get_frame = dummy_g_get_frame, | |
867 | .wakeup = dummy_wakeup, | |
868 | .set_selfpowered = dummy_set_selfpowered, | |
f1c39fad | 869 | .pullup = dummy_pullup, |
aa074739 SAS |
870 | .udc_start = dummy_udc_start, |
871 | .udc_stop = dummy_udc_stop, | |
1da177e4 LT |
872 | }; |
873 | ||
874 | /*-------------------------------------------------------------------------*/ | |
875 | ||
876 | /* "function" sysfs attribute */ | |
877 | static ssize_t | |
10523b3b | 878 | show_function (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
879 | { |
880 | struct dummy *dum = gadget_dev_to_dummy (dev); | |
881 | ||
882 | if (!dum->driver || !dum->driver->function) | |
883 | return 0; | |
884 | return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); | |
885 | } | |
cc095b0b | 886 | static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); |
1da177e4 LT |
887 | |
888 | /*-------------------------------------------------------------------------*/ | |
889 | ||
890 | /* | |
891 | * Driver registration/unregistration. | |
892 | * | |
893 | * This is basically hardware-specific; there's usually only one real USB | |
894 | * device (not host) controller since that's how USB devices are intended | |
895 | * to work. So most implementations of these api calls will rely on the | |
896 | * fact that only one driver will ever bind to the hardware. But curious | |
897 | * hardware can be built with discrete components, so the gadget API doesn't | |
898 | * require that assumption. | |
899 | * | |
900 | * For this emulator, it might be convenient to create a usb slave device | |
901 | * for each driver that registers: just add to a big root hub. | |
902 | */ | |
903 | ||
aa074739 SAS |
904 | static int dummy_udc_start(struct usb_gadget *g, |
905 | struct usb_gadget_driver *driver) | |
1da177e4 | 906 | { |
aa074739 SAS |
907 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
908 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 909 | |
aa074739 | 910 | if (driver->speed == USB_SPEED_UNKNOWN) |
1da177e4 LT |
911 | return -EINVAL; |
912 | ||
913 | /* | |
914 | * SLAVE side init ... the layer above hardware, which | |
915 | * can't enumerate without help from the driver we're binding. | |
916 | */ | |
5742b0c9 | 917 | |
1da177e4 | 918 | dum->devstatus = 0; |
1da177e4 | 919 | |
1da177e4 | 920 | dum->driver = driver; |
d9b76251 | 921 | dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", |
1da177e4 | 922 | driver->driver.name); |
1da177e4 LT |
923 | return 0; |
924 | } | |
1da177e4 | 925 | |
aa074739 SAS |
926 | static int dummy_udc_stop(struct usb_gadget *g, |
927 | struct usb_gadget_driver *driver) | |
1da177e4 | 928 | { |
aa074739 SAS |
929 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
930 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 931 | |
d9b76251 | 932 | dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", |
1da177e4 LT |
933 | driver->driver.name); |
934 | ||
1da177e4 | 935 | dum->driver = NULL; |
25427874 SAS |
936 | |
937 | dummy_pullup(&dum->gadget, 0); | |
1da177e4 LT |
938 | return 0; |
939 | } | |
1da177e4 LT |
940 | |
941 | #undef is_enabled | |
942 | ||
d9b76251 AS |
943 | /* The gadget structure is stored inside the hcd structure and will be |
944 | * released along with it. */ | |
945 | static void | |
946 | dummy_gadget_release (struct device *dev) | |
947 | { | |
cdfcbd2c | 948 | return; |
d9b76251 AS |
949 | } |
950 | ||
0fb57599 SAS |
951 | static void init_dummy_udc_hw(struct dummy *dum) |
952 | { | |
953 | int i; | |
954 | ||
955 | INIT_LIST_HEAD(&dum->gadget.ep_list); | |
956 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { | |
957 | struct dummy_ep *ep = &dum->ep[i]; | |
958 | ||
959 | if (!ep_name[i]) | |
960 | break; | |
961 | ep->ep.name = ep_name[i]; | |
962 | ep->ep.ops = &dummy_ep_ops; | |
963 | list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); | |
964 | ep->halted = ep->wedged = ep->already_seen = | |
965 | ep->setup_stage = 0; | |
966 | ep->ep.maxpacket = ~0; | |
967 | ep->last_io = jiffies; | |
968 | ep->gadget = &dum->gadget; | |
969 | ep->desc = NULL; | |
970 | INIT_LIST_HEAD(&ep->queue); | |
971 | } | |
972 | ||
973 | dum->gadget.ep0 = &dum->ep[0].ep; | |
974 | list_del_init(&dum->ep[0].ep.ep_list); | |
975 | INIT_LIST_HEAD(&dum->fifo_req.queue); | |
f8744d40 SAS |
976 | |
977 | #ifdef CONFIG_USB_OTG | |
978 | dum->gadget.is_otg = 1; | |
979 | #endif | |
0fb57599 SAS |
980 | } |
981 | ||
8364d6b0 | 982 | static int dummy_udc_probe (struct platform_device *pdev) |
d9b76251 | 983 | { |
cdfcbd2c | 984 | struct dummy *dum = &the_controller; |
d9b76251 AS |
985 | int rc; |
986 | ||
987 | dum->gadget.name = gadget_name; | |
988 | dum->gadget.ops = &dummy_ops; | |
989 | dum->gadget.is_dualspeed = 1; | |
990 | ||
0031a06e | 991 | dev_set_name(&dum->gadget.dev, "gadget"); |
8364d6b0 | 992 | dum->gadget.dev.parent = &pdev->dev; |
d9b76251 AS |
993 | dum->gadget.dev.release = dummy_gadget_release; |
994 | rc = device_register (&dum->gadget.dev); | |
75d87cdf RR |
995 | if (rc < 0) { |
996 | put_device(&dum->gadget.dev); | |
d9b76251 | 997 | return rc; |
75d87cdf | 998 | } |
d9b76251 | 999 | |
0fb57599 SAS |
1000 | init_dummy_udc_hw(dum); |
1001 | ||
0f91349b SAS |
1002 | rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); |
1003 | if (rc < 0) | |
1004 | goto err_udc; | |
1005 | ||
efd54a36 AS |
1006 | rc = device_create_file (&dum->gadget.dev, &dev_attr_function); |
1007 | if (rc < 0) | |
0f91349b SAS |
1008 | goto err_dev; |
1009 | platform_set_drvdata(pdev, dum); | |
1010 | return rc; | |
1011 | ||
1012 | err_dev: | |
1013 | usb_del_gadget_udc(&dum->gadget); | |
1014 | err_udc: | |
1015 | device_unregister(&dum->gadget.dev); | |
d9b76251 AS |
1016 | return rc; |
1017 | } | |
1018 | ||
8364d6b0 | 1019 | static int dummy_udc_remove (struct platform_device *pdev) |
d9b76251 | 1020 | { |
8364d6b0 | 1021 | struct dummy *dum = platform_get_drvdata (pdev); |
d9b76251 | 1022 | |
0f91349b | 1023 | usb_del_gadget_udc(&dum->gadget); |
8364d6b0 | 1024 | platform_set_drvdata (pdev, NULL); |
d9b76251 AS |
1025 | device_remove_file (&dum->gadget.dev, &dev_attr_function); |
1026 | device_unregister (&dum->gadget.dev); | |
1027 | return 0; | |
1028 | } | |
1029 | ||
fc0b721f SAS |
1030 | static void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, |
1031 | int suspend) | |
391eca9d | 1032 | { |
fc0b721f SAS |
1033 | spin_lock_irq(&dum->lock); |
1034 | dum->udc_suspended = suspend; | |
d8a14a85 | 1035 | set_link_state(dum_hcd); |
fc0b721f SAS |
1036 | spin_unlock_irq(&dum->lock); |
1037 | } | |
1038 | ||
1039 | static int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) | |
1040 | { | |
1041 | struct dummy *dum = platform_get_drvdata(pdev); | |
1042 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1043 | |
fc0b721f SAS |
1044 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1045 | dummy_udc_pm(dum, dum_hcd, 1); | |
d8a14a85 | 1046 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1047 | return 0; |
1048 | } | |
1049 | ||
fc0b721f | 1050 | static int dummy_udc_resume(struct platform_device *pdev) |
391eca9d | 1051 | { |
fc0b721f SAS |
1052 | struct dummy *dum = platform_get_drvdata(pdev); |
1053 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1054 | |
fc0b721f SAS |
1055 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1056 | dummy_udc_pm(dum, dum_hcd, 0); | |
d8a14a85 | 1057 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1058 | return 0; |
1059 | } | |
1060 | ||
3ae5eaec | 1061 | static struct platform_driver dummy_udc_driver = { |
d9b76251 AS |
1062 | .probe = dummy_udc_probe, |
1063 | .remove = dummy_udc_remove, | |
391eca9d AS |
1064 | .suspend = dummy_udc_suspend, |
1065 | .resume = dummy_udc_resume, | |
3ae5eaec RK |
1066 | .driver = { |
1067 | .name = (char *) gadget_name, | |
1068 | .owner = THIS_MODULE, | |
1069 | }, | |
d9b76251 AS |
1070 | }; |
1071 | ||
1da177e4 LT |
1072 | /*-------------------------------------------------------------------------*/ |
1073 | ||
1074 | /* MASTER/HOST SIDE DRIVER | |
1075 | * | |
1076 | * this uses the hcd framework to hook up to host side drivers. | |
1077 | * its root hub will only have one device, otherwise it acts like | |
1078 | * a normal host controller. | |
1079 | * | |
1080 | * when urbs are queued, they're just stuck on a list that we | |
1081 | * scan in a timer callback. that callback connects writes from | |
1082 | * the host with reads from the device, and so on, based on the | |
1083 | * usb 2.0 rules. | |
1084 | */ | |
1085 | ||
1086 | static int dummy_urb_enqueue ( | |
1087 | struct usb_hcd *hcd, | |
1da177e4 | 1088 | struct urb *urb, |
55016f10 | 1089 | gfp_t mem_flags |
1da177e4 | 1090 | ) { |
cdfcbd2c | 1091 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1092 | struct urbp *urbp; |
1093 | unsigned long flags; | |
e9df41c5 | 1094 | int rc; |
1da177e4 LT |
1095 | |
1096 | if (!urb->transfer_buffer && urb->transfer_buffer_length) | |
1097 | return -EINVAL; | |
1098 | ||
1099 | urbp = kmalloc (sizeof *urbp, mem_flags); | |
1100 | if (!urbp) | |
1101 | return -ENOMEM; | |
1102 | urbp->urb = urb; | |
1103 | ||
cdfcbd2c TB |
1104 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1105 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
e9df41c5 AS |
1106 | rc = usb_hcd_link_urb_to_ep(hcd, urb); |
1107 | if (rc) { | |
1108 | kfree(urbp); | |
1109 | goto done; | |
1110 | } | |
1da177e4 | 1111 | |
cdfcbd2c TB |
1112 | if (!dum_hcd->udev) { |
1113 | dum_hcd->udev = urb->dev; | |
1114 | usb_get_dev(dum_hcd->udev); | |
1115 | } else if (unlikely(dum_hcd->udev != urb->dev)) | |
1116 | dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); | |
1da177e4 | 1117 | |
cdfcbd2c | 1118 | list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); |
1da177e4 LT |
1119 | urb->hcpriv = urbp; |
1120 | if (usb_pipetype (urb->pipe) == PIPE_CONTROL) | |
1121 | urb->error_count = 1; /* mark as a new urb */ | |
1122 | ||
1123 | /* kick the scheduler, it'll do the rest */ | |
cdfcbd2c TB |
1124 | if (!timer_pending(&dum_hcd->timer)) |
1125 | mod_timer(&dum_hcd->timer, jiffies + 1); | |
1da177e4 | 1126 | |
e9df41c5 | 1127 | done: |
cdfcbd2c | 1128 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1129 | return rc; |
1da177e4 LT |
1130 | } |
1131 | ||
e9df41c5 | 1132 | static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
1da177e4 | 1133 | { |
cdfcbd2c | 1134 | struct dummy_hcd *dum_hcd; |
391eca9d | 1135 | unsigned long flags; |
e9df41c5 | 1136 | int rc; |
391eca9d AS |
1137 | |
1138 | /* giveback happens automatically in timer callback, | |
1139 | * so make sure the callback happens */ | |
cdfcbd2c TB |
1140 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1141 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
e9df41c5 AS |
1142 | |
1143 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); | |
cdfcbd2c TB |
1144 | if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && |
1145 | !list_empty(&dum_hcd->urbp_list)) | |
1146 | mod_timer(&dum_hcd->timer, jiffies); | |
e9df41c5 | 1147 | |
cdfcbd2c | 1148 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1149 | return rc; |
1da177e4 LT |
1150 | } |
1151 | ||
1da177e4 LT |
1152 | /* transfer up to a frame's worth; caller must own lock */ |
1153 | static int | |
4d2f110c AS |
1154 | transfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, |
1155 | int *status) | |
1da177e4 LT |
1156 | { |
1157 | struct dummy_request *req; | |
1158 | ||
1159 | top: | |
1160 | /* if there's no request queued, the device is NAKing; return */ | |
1161 | list_for_each_entry (req, &ep->queue, queue) { | |
1162 | unsigned host_len, dev_len, len; | |
1163 | int is_short, to_host; | |
1164 | int rescan = 0; | |
1165 | ||
1166 | /* 1..N packets of ep->ep.maxpacket each ... the last one | |
1167 | * may be short (including zero length). | |
1168 | * | |
1169 | * writer can send a zlp explicitly (length 0) or implicitly | |
1170 | * (length mod maxpacket zero, and 'zero' flag); they always | |
1171 | * terminate reads. | |
1172 | */ | |
1173 | host_len = urb->transfer_buffer_length - urb->actual_length; | |
1174 | dev_len = req->req.length - req->req.actual; | |
1175 | len = min (host_len, dev_len); | |
1176 | ||
1177 | /* FIXME update emulated data toggle too */ | |
1178 | ||
1179 | to_host = usb_pipein (urb->pipe); | |
1180 | if (unlikely (len == 0)) | |
1181 | is_short = 1; | |
1182 | else { | |
1183 | char *ubuf, *rbuf; | |
1184 | ||
1185 | /* not enough bandwidth left? */ | |
1186 | if (limit < ep->ep.maxpacket && limit < len) | |
1187 | break; | |
1188 | len = min (len, (unsigned) limit); | |
1189 | if (len == 0) | |
1190 | break; | |
1191 | ||
1192 | /* use an extra pass for the final short packet */ | |
1193 | if (len > ep->ep.maxpacket) { | |
1194 | rescan = 1; | |
1195 | len -= (len % ep->ep.maxpacket); | |
1196 | } | |
1197 | is_short = (len % ep->ep.maxpacket) != 0; | |
1198 | ||
1199 | /* else transfer packet(s) */ | |
1200 | ubuf = urb->transfer_buffer + urb->actual_length; | |
1201 | rbuf = req->req.buf + req->req.actual; | |
1202 | if (to_host) | |
1203 | memcpy (ubuf, rbuf, len); | |
1204 | else | |
1205 | memcpy (rbuf, ubuf, len); | |
1206 | ep->last_io = jiffies; | |
1207 | ||
1208 | limit -= len; | |
1209 | urb->actual_length += len; | |
1210 | req->req.actual += len; | |
1211 | } | |
1212 | ||
1213 | /* short packets terminate, maybe with overflow/underflow. | |
1214 | * it's only really an error to write too much. | |
1215 | * | |
1216 | * partially filling a buffer optionally blocks queue advances | |
1217 | * (so completion handlers can clean up the queue) but we don't | |
b0d9efba | 1218 | * need to emulate such data-in-flight. |
1da177e4 LT |
1219 | */ |
1220 | if (is_short) { | |
1221 | if (host_len == dev_len) { | |
1222 | req->req.status = 0; | |
4d2f110c | 1223 | *status = 0; |
1da177e4 LT |
1224 | } else if (to_host) { |
1225 | req->req.status = 0; | |
1226 | if (dev_len > host_len) | |
4d2f110c | 1227 | *status = -EOVERFLOW; |
1da177e4 | 1228 | else |
4d2f110c | 1229 | *status = 0; |
1da177e4 | 1230 | } else if (!to_host) { |
4d2f110c | 1231 | *status = 0; |
1da177e4 LT |
1232 | if (host_len > dev_len) |
1233 | req->req.status = -EOVERFLOW; | |
1234 | else | |
1235 | req->req.status = 0; | |
1236 | } | |
1237 | ||
1238 | /* many requests terminate without a short packet */ | |
1239 | } else { | |
1240 | if (req->req.length == req->req.actual | |
1241 | && !req->req.zero) | |
1242 | req->req.status = 0; | |
1243 | if (urb->transfer_buffer_length == urb->actual_length | |
1244 | && !(urb->transfer_flags | |
4d2f110c AS |
1245 | & URB_ZERO_PACKET)) |
1246 | *status = 0; | |
1da177e4 LT |
1247 | } |
1248 | ||
1249 | /* device side completion --> continuable */ | |
1250 | if (req->req.status != -EINPROGRESS) { | |
1251 | list_del_init (&req->queue); | |
1252 | ||
1253 | spin_unlock (&dum->lock); | |
1254 | req->req.complete (&ep->ep, &req->req); | |
1255 | spin_lock (&dum->lock); | |
1256 | ||
1257 | /* requests might have been unlinked... */ | |
1258 | rescan = 1; | |
1259 | } | |
1260 | ||
1261 | /* host side completion --> terminate */ | |
4d2f110c | 1262 | if (*status != -EINPROGRESS) |
1da177e4 LT |
1263 | break; |
1264 | ||
1265 | /* rescan to continue with any other queued i/o */ | |
1266 | if (rescan) | |
1267 | goto top; | |
1268 | } | |
1269 | return limit; | |
1270 | } | |
1271 | ||
1272 | static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) | |
1273 | { | |
1274 | int limit = ep->ep.maxpacket; | |
1275 | ||
1276 | if (dum->gadget.speed == USB_SPEED_HIGH) { | |
1277 | int tmp; | |
1278 | ||
1279 | /* high bandwidth mode */ | |
29cc8897 | 1280 | tmp = usb_endpoint_maxp(ep->desc); |
1da177e4 LT |
1281 | tmp = (tmp >> 11) & 0x03; |
1282 | tmp *= 8 /* applies to entire frame */; | |
1283 | limit += limit * tmp; | |
1284 | } | |
1cd8fd28 TB |
1285 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
1286 | switch (ep->desc->bmAttributes & 0x03) { | |
1287 | case USB_ENDPOINT_XFER_ISOC: | |
1288 | /* Sec. 4.4.8.2 USB3.0 Spec */ | |
1289 | limit = 3 * 16 * 1024 * 8; | |
1290 | break; | |
1291 | case USB_ENDPOINT_XFER_INT: | |
1292 | /* Sec. 4.4.7.2 USB3.0 Spec */ | |
1293 | limit = 3 * 1024 * 8; | |
1294 | break; | |
1295 | case USB_ENDPOINT_XFER_BULK: | |
1296 | default: | |
1297 | break; | |
1298 | } | |
1299 | } | |
1da177e4 LT |
1300 | return limit; |
1301 | } | |
1302 | ||
cdfcbd2c | 1303 | #define is_active(dum_hcd) ((dum_hcd->port_status & \ |
1da177e4 LT |
1304 | (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ |
1305 | USB_PORT_STAT_SUSPEND)) \ | |
1306 | == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) | |
1307 | ||
1308 | static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) | |
1309 | { | |
1310 | int i; | |
1311 | ||
1cd8fd28 TB |
1312 | if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? |
1313 | dum->ss_hcd : dum->hs_hcd))) | |
1da177e4 LT |
1314 | return NULL; |
1315 | if ((address & ~USB_DIR_IN) == 0) | |
1316 | return &dum->ep [0]; | |
1317 | for (i = 1; i < DUMMY_ENDPOINTS; i++) { | |
1318 | struct dummy_ep *ep = &dum->ep [i]; | |
1319 | ||
1320 | if (!ep->desc) | |
1321 | continue; | |
1322 | if (ep->desc->bEndpointAddress == address) | |
1323 | return ep; | |
1324 | } | |
1325 | return NULL; | |
1326 | } | |
1327 | ||
1328 | #undef is_active | |
1329 | ||
1330 | #define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) | |
1331 | #define Dev_InRequest (Dev_Request | USB_DIR_IN) | |
1332 | #define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) | |
1333 | #define Intf_InRequest (Intf_Request | USB_DIR_IN) | |
1334 | #define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) | |
1335 | #define Ep_InRequest (Ep_Request | USB_DIR_IN) | |
1336 | ||
8be8a9d3 TB |
1337 | |
1338 | /** | |
1339 | * handle_control_request() - handles all control transfers | |
1340 | * @dum: pointer to dummy (the_controller) | |
1341 | * @urb: the urb request to handle | |
1342 | * @setup: pointer to the setup data for a USB device control | |
1343 | * request | |
1344 | * @status: pointer to request handling status | |
1345 | * | |
1346 | * Return 0 - if the request was handled | |
1347 | * 1 - if the request wasn't handles | |
1348 | * error code on error | |
1349 | */ | |
cdfcbd2c | 1350 | static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, |
8be8a9d3 TB |
1351 | struct usb_ctrlrequest *setup, |
1352 | int *status) | |
1353 | { | |
1354 | struct dummy_ep *ep2; | |
cdfcbd2c | 1355 | struct dummy *dum = dum_hcd->dum; |
8be8a9d3 TB |
1356 | int ret_val = 1; |
1357 | unsigned w_index; | |
1358 | unsigned w_value; | |
1359 | ||
1360 | w_index = le16_to_cpu(setup->wIndex); | |
1361 | w_value = le16_to_cpu(setup->wValue); | |
1362 | switch (setup->bRequest) { | |
1363 | case USB_REQ_SET_ADDRESS: | |
1364 | if (setup->bRequestType != Dev_Request) | |
1365 | break; | |
1366 | dum->address = w_value; | |
1367 | *status = 0; | |
1368 | dev_dbg(udc_dev(dum), "set_address = %d\n", | |
1369 | w_value); | |
1370 | ret_val = 0; | |
1371 | break; | |
1372 | case USB_REQ_SET_FEATURE: | |
1373 | if (setup->bRequestType == Dev_Request) { | |
1374 | ret_val = 0; | |
1375 | switch (w_value) { | |
1376 | case USB_DEVICE_REMOTE_WAKEUP: | |
1377 | break; | |
1378 | case USB_DEVICE_B_HNP_ENABLE: | |
1379 | dum->gadget.b_hnp_enable = 1; | |
1380 | break; | |
1381 | case USB_DEVICE_A_HNP_SUPPORT: | |
1382 | dum->gadget.a_hnp_support = 1; | |
1383 | break; | |
1384 | case USB_DEVICE_A_ALT_HNP_SUPPORT: | |
1385 | dum->gadget.a_alt_hnp_support = 1; | |
1386 | break; | |
1cd8fd28 TB |
1387 | case USB_DEVICE_U1_ENABLE: |
1388 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1389 | HCD_USB3) | |
1390 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1391 | else | |
1392 | ret_val = -EOPNOTSUPP; | |
1393 | break; | |
1394 | case USB_DEVICE_U2_ENABLE: | |
1395 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1396 | HCD_USB3) | |
1397 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1398 | else | |
1399 | ret_val = -EOPNOTSUPP; | |
1400 | break; | |
1401 | case USB_DEVICE_LTM_ENABLE: | |
1402 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1403 | HCD_USB3) | |
1404 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1405 | else | |
1406 | ret_val = -EOPNOTSUPP; | |
1407 | break; | |
8be8a9d3 TB |
1408 | default: |
1409 | ret_val = -EOPNOTSUPP; | |
1410 | } | |
1411 | if (ret_val == 0) { | |
1412 | dum->devstatus |= (1 << w_value); | |
1413 | *status = 0; | |
1414 | } | |
1415 | } else if (setup->bRequestType == Ep_Request) { | |
1416 | /* endpoint halt */ | |
1417 | ep2 = find_endpoint(dum, w_index); | |
1418 | if (!ep2 || ep2->ep.name == ep0name) { | |
1419 | ret_val = -EOPNOTSUPP; | |
1420 | break; | |
1421 | } | |
1422 | ep2->halted = 1; | |
1423 | ret_val = 0; | |
1424 | *status = 0; | |
1425 | } | |
1426 | break; | |
1427 | case USB_REQ_CLEAR_FEATURE: | |
1428 | if (setup->bRequestType == Dev_Request) { | |
1429 | ret_val = 0; | |
1430 | switch (w_value) { | |
1431 | case USB_DEVICE_REMOTE_WAKEUP: | |
1432 | w_value = USB_DEVICE_REMOTE_WAKEUP; | |
1433 | break; | |
1cd8fd28 TB |
1434 | case USB_DEVICE_U1_ENABLE: |
1435 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1436 | HCD_USB3) | |
1437 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1438 | else | |
1439 | ret_val = -EOPNOTSUPP; | |
1440 | break; | |
1441 | case USB_DEVICE_U2_ENABLE: | |
1442 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1443 | HCD_USB3) | |
1444 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1445 | else | |
1446 | ret_val = -EOPNOTSUPP; | |
1447 | break; | |
1448 | case USB_DEVICE_LTM_ENABLE: | |
1449 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1450 | HCD_USB3) | |
1451 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1452 | else | |
1453 | ret_val = -EOPNOTSUPP; | |
1454 | break; | |
8be8a9d3 TB |
1455 | default: |
1456 | ret_val = -EOPNOTSUPP; | |
1457 | break; | |
1458 | } | |
1459 | if (ret_val == 0) { | |
1460 | dum->devstatus &= ~(1 << w_value); | |
1461 | *status = 0; | |
1462 | } | |
1463 | } else if (setup->bRequestType == Ep_Request) { | |
1464 | /* endpoint halt */ | |
1465 | ep2 = find_endpoint(dum, w_index); | |
1466 | if (!ep2) { | |
1467 | ret_val = -EOPNOTSUPP; | |
1468 | break; | |
1469 | } | |
1470 | if (!ep2->wedged) | |
1471 | ep2->halted = 0; | |
1472 | ret_val = 0; | |
1473 | *status = 0; | |
1474 | } | |
1475 | break; | |
1476 | case USB_REQ_GET_STATUS: | |
1477 | if (setup->bRequestType == Dev_InRequest | |
1478 | || setup->bRequestType == Intf_InRequest | |
1479 | || setup->bRequestType == Ep_InRequest) { | |
1480 | char *buf; | |
1481 | /* | |
1482 | * device: remote wakeup, selfpowered | |
1483 | * interface: nothing | |
1484 | * endpoint: halt | |
1485 | */ | |
1486 | buf = (char *)urb->transfer_buffer; | |
1487 | if (urb->transfer_buffer_length > 0) { | |
1488 | if (setup->bRequestType == Ep_InRequest) { | |
1489 | ep2 = find_endpoint(dum, w_index); | |
1490 | if (!ep2) { | |
1491 | ret_val = -EOPNOTSUPP; | |
1492 | break; | |
1493 | } | |
1494 | buf[0] = ep2->halted; | |
1495 | } else if (setup->bRequestType == | |
1496 | Dev_InRequest) { | |
1497 | buf[0] = (u8)dum->devstatus; | |
1498 | } else | |
1499 | buf[0] = 0; | |
1500 | } | |
1501 | if (urb->transfer_buffer_length > 1) | |
1502 | buf[1] = 0; | |
1503 | urb->actual_length = min_t(u32, 2, | |
1504 | urb->transfer_buffer_length); | |
1505 | ret_val = 0; | |
1506 | *status = 0; | |
1507 | } | |
1508 | break; | |
1509 | } | |
1510 | return ret_val; | |
1511 | } | |
1512 | ||
1da177e4 LT |
1513 | /* drive both sides of the transfers; looks like irq handlers to |
1514 | * both drivers except the callbacks aren't in_irq(). | |
1515 | */ | |
cdfcbd2c | 1516 | static void dummy_timer(unsigned long _dum_hcd) |
1da177e4 | 1517 | { |
cdfcbd2c TB |
1518 | struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; |
1519 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 LT |
1520 | struct urbp *urbp, *tmp; |
1521 | unsigned long flags; | |
1522 | int limit, total; | |
1523 | int i; | |
1524 | ||
1525 | /* simplistic model for one frame's bandwidth */ | |
1526 | switch (dum->gadget.speed) { | |
1527 | case USB_SPEED_LOW: | |
1528 | total = 8/*bytes*/ * 12/*packets*/; | |
1529 | break; | |
1530 | case USB_SPEED_FULL: | |
1531 | total = 64/*bytes*/ * 19/*packets*/; | |
1532 | break; | |
1533 | case USB_SPEED_HIGH: | |
1534 | total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; | |
1535 | break; | |
1cd8fd28 TB |
1536 | case USB_SPEED_SUPER: |
1537 | /* Bus speed is 500000 bytes/ms, so use a little less */ | |
1538 | total = 490000; | |
1539 | break; | |
1da177e4 | 1540 | default: |
cdfcbd2c | 1541 | dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); |
1da177e4 LT |
1542 | return; |
1543 | } | |
1544 | ||
1545 | /* FIXME if HZ != 1000 this will probably misbehave ... */ | |
1546 | ||
1547 | /* look at each urb queued by the host side driver */ | |
1548 | spin_lock_irqsave (&dum->lock, flags); | |
1549 | ||
cdfcbd2c TB |
1550 | if (!dum_hcd->udev) { |
1551 | dev_err(dummy_dev(dum_hcd), | |
1da177e4 LT |
1552 | "timer fired with no URBs pending?\n"); |
1553 | spin_unlock_irqrestore (&dum->lock, flags); | |
1554 | return; | |
1555 | } | |
1556 | ||
1557 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { | |
1558 | if (!ep_name [i]) | |
1559 | break; | |
1560 | dum->ep [i].already_seen = 0; | |
1561 | } | |
1562 | ||
1563 | restart: | |
cdfcbd2c | 1564 | list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { |
1da177e4 LT |
1565 | struct urb *urb; |
1566 | struct dummy_request *req; | |
1567 | u8 address; | |
1568 | struct dummy_ep *ep = NULL; | |
1569 | int type; | |
4d2f110c | 1570 | int status = -EINPROGRESS; |
1da177e4 LT |
1571 | |
1572 | urb = urbp->urb; | |
eb231054 | 1573 | if (urb->unlinked) |
1da177e4 | 1574 | goto return_urb; |
cdfcbd2c | 1575 | else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) |
391eca9d | 1576 | continue; |
1da177e4 LT |
1577 | type = usb_pipetype (urb->pipe); |
1578 | ||
1579 | /* used up this frame's non-periodic bandwidth? | |
1580 | * FIXME there's infinite bandwidth for control and | |
1581 | * periodic transfers ... unrealistic. | |
1582 | */ | |
1583 | if (total <= 0 && type == PIPE_BULK) | |
1584 | continue; | |
1585 | ||
1586 | /* find the gadget's ep for this request (if configured) */ | |
1587 | address = usb_pipeendpoint (urb->pipe); | |
1588 | if (usb_pipein (urb->pipe)) | |
1589 | address |= USB_DIR_IN; | |
1590 | ep = find_endpoint(dum, address); | |
1591 | if (!ep) { | |
1592 | /* set_configuration() disagreement */ | |
cdfcbd2c | 1593 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
1594 | "no ep configured for urb %p\n", |
1595 | urb); | |
4d2f110c | 1596 | status = -EPROTO; |
1da177e4 LT |
1597 | goto return_urb; |
1598 | } | |
1599 | ||
1600 | if (ep->already_seen) | |
1601 | continue; | |
1602 | ep->already_seen = 1; | |
1603 | if (ep == &dum->ep [0] && urb->error_count) { | |
1604 | ep->setup_stage = 1; /* a new urb */ | |
1605 | urb->error_count = 0; | |
1606 | } | |
1607 | if (ep->halted && !ep->setup_stage) { | |
1608 | /* NOTE: must not be iso! */ | |
cdfcbd2c | 1609 | dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", |
1da177e4 | 1610 | ep->ep.name, urb); |
4d2f110c | 1611 | status = -EPIPE; |
1da177e4 LT |
1612 | goto return_urb; |
1613 | } | |
1614 | /* FIXME make sure both ends agree on maxpacket */ | |
1615 | ||
1616 | /* handle control requests */ | |
1617 | if (ep == &dum->ep [0] && ep->setup_stage) { | |
1618 | struct usb_ctrlrequest setup; | |
1619 | int value = 1; | |
1da177e4 LT |
1620 | |
1621 | setup = *(struct usb_ctrlrequest*) urb->setup_packet; | |
1da177e4 LT |
1622 | /* paranoia, in case of stale queued data */ |
1623 | list_for_each_entry (req, &ep->queue, queue) { | |
1624 | list_del_init (&req->queue); | |
1625 | req->req.status = -EOVERFLOW; | |
d9b76251 | 1626 | dev_dbg (udc_dev(dum), "stale req = %p\n", |
1da177e4 LT |
1627 | req); |
1628 | ||
1629 | spin_unlock (&dum->lock); | |
1630 | req->req.complete (&ep->ep, &req->req); | |
1631 | spin_lock (&dum->lock); | |
1632 | ep->already_seen = 0; | |
1633 | goto restart; | |
1634 | } | |
1635 | ||
1636 | /* gadget driver never sees set_address or operations | |
1637 | * on standard feature flags. some hardware doesn't | |
1638 | * even expose them. | |
1639 | */ | |
1640 | ep->last_io = jiffies; | |
1641 | ep->setup_stage = 0; | |
1642 | ep->halted = 0; | |
1da177e4 | 1643 | |
cdfcbd2c | 1644 | value = handle_control_request(dum_hcd, urb, &setup, |
8be8a9d3 | 1645 | &status); |
1da177e4 LT |
1646 | |
1647 | /* gadget driver handles all other requests. block | |
1648 | * until setup() returns; no reentrancy issues etc. | |
1649 | */ | |
1650 | if (value > 0) { | |
1651 | spin_unlock (&dum->lock); | |
1652 | value = dum->driver->setup (&dum->gadget, | |
1653 | &setup); | |
1654 | spin_lock (&dum->lock); | |
1655 | ||
1656 | if (value >= 0) { | |
1657 | /* no delays (max 64KB data stage) */ | |
1658 | limit = 64*1024; | |
1659 | goto treat_control_like_bulk; | |
1660 | } | |
1661 | /* error, see below */ | |
1662 | } | |
1663 | ||
1664 | if (value < 0) { | |
1665 | if (value != -EOPNOTSUPP) | |
d9b76251 | 1666 | dev_dbg (udc_dev(dum), |
1da177e4 LT |
1667 | "setup --> %d\n", |
1668 | value); | |
4d2f110c | 1669 | status = -EPIPE; |
1da177e4 LT |
1670 | urb->actual_length = 0; |
1671 | } | |
1672 | ||
1673 | goto return_urb; | |
1674 | } | |
1675 | ||
1676 | /* non-control requests */ | |
1677 | limit = total; | |
1678 | switch (usb_pipetype (urb->pipe)) { | |
1679 | case PIPE_ISOCHRONOUS: | |
1680 | /* FIXME is it urb->interval since the last xfer? | |
1681 | * use urb->iso_frame_desc[i]. | |
1682 | * complete whether or not ep has requests queued. | |
1683 | * report random errors, to debug drivers. | |
1684 | */ | |
1685 | limit = max (limit, periodic_bytes (dum, ep)); | |
4d2f110c | 1686 | status = -ENOSYS; |
1da177e4 LT |
1687 | break; |
1688 | ||
1689 | case PIPE_INTERRUPT: | |
1690 | /* FIXME is it urb->interval since the last xfer? | |
1691 | * this almost certainly polls too fast. | |
1692 | */ | |
1693 | limit = max (limit, periodic_bytes (dum, ep)); | |
1694 | /* FALLTHROUGH */ | |
1695 | ||
1696 | // case PIPE_BULK: case PIPE_CONTROL: | |
1697 | default: | |
1698 | treat_control_like_bulk: | |
1699 | ep->last_io = jiffies; | |
4d2f110c | 1700 | total = transfer(dum, urb, ep, limit, &status); |
1da177e4 LT |
1701 | break; |
1702 | } | |
1703 | ||
1704 | /* incomplete transfer? */ | |
4d2f110c | 1705 | if (status == -EINPROGRESS) |
1da177e4 LT |
1706 | continue; |
1707 | ||
1708 | return_urb: | |
1da177e4 LT |
1709 | list_del (&urbp->urbp_list); |
1710 | kfree (urbp); | |
1711 | if (ep) | |
1712 | ep->already_seen = ep->setup_stage = 0; | |
1713 | ||
cdfcbd2c | 1714 | usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); |
1da177e4 | 1715 | spin_unlock (&dum->lock); |
cdfcbd2c | 1716 | usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); |
1da177e4 LT |
1717 | spin_lock (&dum->lock); |
1718 | ||
1719 | goto restart; | |
1720 | } | |
1721 | ||
cdfcbd2c TB |
1722 | if (list_empty(&dum_hcd->urbp_list)) { |
1723 | usb_put_dev(dum_hcd->udev); | |
1724 | dum_hcd->udev = NULL; | |
1725 | } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
391eca9d | 1726 | /* want a 1 msec delay here */ |
cdfcbd2c | 1727 | mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); |
1da177e4 LT |
1728 | } |
1729 | ||
1730 | spin_unlock_irqrestore (&dum->lock, flags); | |
1731 | } | |
1732 | ||
1733 | /*-------------------------------------------------------------------------*/ | |
1734 | ||
1735 | #define PORT_C_MASK \ | |
c2db8b5e AS |
1736 | ((USB_PORT_STAT_C_CONNECTION \ |
1737 | | USB_PORT_STAT_C_ENABLE \ | |
1738 | | USB_PORT_STAT_C_SUSPEND \ | |
1739 | | USB_PORT_STAT_C_OVERCURRENT \ | |
1740 | | USB_PORT_STAT_C_RESET) << 16) | |
1da177e4 LT |
1741 | |
1742 | static int dummy_hub_status (struct usb_hcd *hcd, char *buf) | |
1743 | { | |
cdfcbd2c | 1744 | struct dummy_hcd *dum_hcd; |
1da177e4 | 1745 | unsigned long flags; |
391eca9d | 1746 | int retval = 0; |
1da177e4 | 1747 | |
cdfcbd2c | 1748 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 | 1749 | |
cdfcbd2c | 1750 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
541c7d43 | 1751 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d | 1752 | goto done; |
f1c39fad | 1753 | |
cdfcbd2c TB |
1754 | if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { |
1755 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
1756 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1757 | set_link_state(dum_hcd); | |
f1c39fad AS |
1758 | } |
1759 | ||
cdfcbd2c | 1760 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) { |
1da177e4 | 1761 | *buf = (1 << 1); |
cdfcbd2c TB |
1762 | dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", |
1763 | dum_hcd->port_status); | |
1da177e4 | 1764 | retval = 1; |
cdfcbd2c | 1765 | if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) |
391eca9d | 1766 | usb_hcd_resume_root_hub (hcd); |
1da177e4 | 1767 | } |
391eca9d | 1768 | done: |
cdfcbd2c | 1769 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
1770 | return retval; |
1771 | } | |
1772 | ||
1cd8fd28 TB |
1773 | static inline void |
1774 | ss_hub_descriptor(struct usb_hub_descriptor *desc) | |
1775 | { | |
1776 | memset(desc, 0, sizeof *desc); | |
1777 | desc->bDescriptorType = 0x2a; | |
1778 | desc->bDescLength = 12; | |
1779 | desc->wHubCharacteristics = cpu_to_le16(0x0001); | |
1780 | desc->bNbrPorts = 1; | |
1781 | desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ | |
1782 | desc->u.ss.DeviceRemovable = 0xffff; | |
1783 | } | |
1784 | ||
1da177e4 LT |
1785 | static inline void |
1786 | hub_descriptor (struct usb_hub_descriptor *desc) | |
1787 | { | |
1788 | memset (desc, 0, sizeof *desc); | |
1789 | desc->bDescriptorType = 0x29; | |
1790 | desc->bDescLength = 9; | |
fd05e720 | 1791 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
1da177e4 | 1792 | desc->bNbrPorts = 1; |
dbe79bbe JY |
1793 | desc->u.hs.DeviceRemovable[0] = 0xff; |
1794 | desc->u.hs.DeviceRemovable[1] = 0xff; | |
1da177e4 LT |
1795 | } |
1796 | ||
1797 | static int dummy_hub_control ( | |
1798 | struct usb_hcd *hcd, | |
1799 | u16 typeReq, | |
1800 | u16 wValue, | |
1801 | u16 wIndex, | |
1802 | char *buf, | |
1803 | u16 wLength | |
1804 | ) { | |
cdfcbd2c | 1805 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1806 | int retval = 0; |
1807 | unsigned long flags; | |
1808 | ||
541c7d43 | 1809 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d AS |
1810 | return -ETIMEDOUT; |
1811 | ||
cdfcbd2c TB |
1812 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1813 | ||
1814 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
1da177e4 LT |
1815 | switch (typeReq) { |
1816 | case ClearHubFeature: | |
1817 | break; | |
1818 | case ClearPortFeature: | |
1819 | switch (wValue) { | |
1820 | case USB_PORT_FEAT_SUSPEND: | |
1cd8fd28 TB |
1821 | if (hcd->speed == HCD_USB3) { |
1822 | dev_dbg(dummy_dev(dum_hcd), | |
1823 | "USB_PORT_FEAT_SUSPEND req not " | |
1824 | "supported for USB 3.0 roothub\n"); | |
1825 | goto error; | |
1826 | } | |
cdfcbd2c | 1827 | if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { |
1da177e4 | 1828 | /* 20msec resume signaling */ |
cdfcbd2c TB |
1829 | dum_hcd->resuming = 1; |
1830 | dum_hcd->re_timeout = jiffies + | |
f1c39fad | 1831 | msecs_to_jiffies(20); |
1da177e4 LT |
1832 | } |
1833 | break; | |
1834 | case USB_PORT_FEAT_POWER: | |
1cd8fd28 TB |
1835 | if (hcd->speed == HCD_USB3) { |
1836 | if (dum_hcd->port_status & USB_PORT_STAT_POWER) | |
1837 | dev_dbg(dummy_dev(dum_hcd), | |
1838 | "power-off\n"); | |
1839 | } else | |
1840 | if (dum_hcd->port_status & | |
1841 | USB_SS_PORT_STAT_POWER) | |
1842 | dev_dbg(dummy_dev(dum_hcd), | |
1843 | "power-off\n"); | |
f1c39fad | 1844 | /* FALLS THROUGH */ |
1da177e4 | 1845 | default: |
cdfcbd2c TB |
1846 | dum_hcd->port_status &= ~(1 << wValue); |
1847 | set_link_state(dum_hcd); | |
1da177e4 LT |
1848 | } |
1849 | break; | |
1850 | case GetHubDescriptor: | |
1cd8fd28 TB |
1851 | if (hcd->speed == HCD_USB3 && |
1852 | (wLength < USB_DT_SS_HUB_SIZE || | |
1853 | wValue != (USB_DT_SS_HUB << 8))) { | |
1854 | dev_dbg(dummy_dev(dum_hcd), | |
1855 | "Wrong hub descriptor type for " | |
1856 | "USB 3.0 roothub.\n"); | |
1857 | goto error; | |
1858 | } | |
1859 | if (hcd->speed == HCD_USB3) | |
1860 | ss_hub_descriptor((struct usb_hub_descriptor *) buf); | |
1861 | else | |
1862 | hub_descriptor((struct usb_hub_descriptor *) buf); | |
1da177e4 LT |
1863 | break; |
1864 | case GetHubStatus: | |
551509d2 | 1865 | *(__le32 *) buf = cpu_to_le32 (0); |
1da177e4 LT |
1866 | break; |
1867 | case GetPortStatus: | |
1868 | if (wIndex != 1) | |
1869 | retval = -EPIPE; | |
1870 | ||
1871 | /* whoever resets or resumes must GetPortStatus to | |
1872 | * complete it!! | |
1873 | */ | |
cdfcbd2c TB |
1874 | if (dum_hcd->resuming && |
1875 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
1876 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
1877 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1da177e4 | 1878 | } |
cdfcbd2c TB |
1879 | if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && |
1880 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
1881 | dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); | |
1882 | dum_hcd->port_status &= ~USB_PORT_STAT_RESET; | |
1883 | if (dum_hcd->dum->pullup) { | |
1884 | dum_hcd->port_status |= USB_PORT_STAT_ENABLE; | |
1cd8fd28 TB |
1885 | |
1886 | if (hcd->speed < HCD_USB3) { | |
1887 | switch (dum_hcd->dum->gadget.speed) { | |
1888 | case USB_SPEED_HIGH: | |
1889 | dum_hcd->port_status |= | |
1890 | USB_PORT_STAT_HIGH_SPEED; | |
1891 | break; | |
1892 | case USB_SPEED_LOW: | |
1893 | dum_hcd->dum->gadget.ep0-> | |
1894 | maxpacket = 8; | |
1895 | dum_hcd->port_status |= | |
1896 | USB_PORT_STAT_LOW_SPEED; | |
1897 | break; | |
1898 | default: | |
1899 | dum_hcd->dum->gadget.speed = | |
1900 | USB_SPEED_FULL; | |
1901 | break; | |
1902 | } | |
1da177e4 LT |
1903 | } |
1904 | } | |
1905 | } | |
cdfcbd2c TB |
1906 | set_link_state(dum_hcd); |
1907 | ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); | |
1908 | ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); | |
1da177e4 LT |
1909 | break; |
1910 | case SetHubFeature: | |
1911 | retval = -EPIPE; | |
1912 | break; | |
1913 | case SetPortFeature: | |
1914 | switch (wValue) { | |
1cd8fd28 TB |
1915 | case USB_PORT_FEAT_LINK_STATE: |
1916 | if (hcd->speed != HCD_USB3) { | |
1917 | dev_dbg(dummy_dev(dum_hcd), | |
1918 | "USB_PORT_FEAT_LINK_STATE req not " | |
1919 | "supported for USB 2.0 roothub\n"); | |
1920 | goto error; | |
1921 | } | |
1922 | /* | |
1923 | * Since this is dummy we don't have an actual link so | |
1924 | * there is nothing to do for the SET_LINK_STATE cmd | |
1925 | */ | |
1926 | break; | |
1927 | case USB_PORT_FEAT_U1_TIMEOUT: | |
1928 | case USB_PORT_FEAT_U2_TIMEOUT: | |
1929 | /* TODO: add suspend/resume support! */ | |
1930 | if (hcd->speed != HCD_USB3) { | |
1931 | dev_dbg(dummy_dev(dum_hcd), | |
1932 | "USB_PORT_FEAT_U1/2_TIMEOUT req not " | |
1933 | "supported for USB 2.0 roothub\n"); | |
1934 | goto error; | |
1935 | } | |
1936 | break; | |
1da177e4 | 1937 | case USB_PORT_FEAT_SUSPEND: |
1cd8fd28 TB |
1938 | /* Applicable only for USB2.0 hub */ |
1939 | if (hcd->speed == HCD_USB3) { | |
1940 | dev_dbg(dummy_dev(dum_hcd), | |
1941 | "USB_PORT_FEAT_SUSPEND req not " | |
1942 | "supported for USB 3.0 roothub\n"); | |
1943 | goto error; | |
1944 | } | |
cdfcbd2c TB |
1945 | if (dum_hcd->active) { |
1946 | dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; | |
f1c39fad AS |
1947 | |
1948 | /* HNP would happen here; for now we | |
1949 | * assume b_bus_req is always true. | |
1950 | */ | |
cdfcbd2c | 1951 | set_link_state(dum_hcd); |
f1c39fad | 1952 | if (((1 << USB_DEVICE_B_HNP_ENABLE) |
cdfcbd2c TB |
1953 | & dum_hcd->dum->devstatus) != 0) |
1954 | dev_dbg(dummy_dev(dum_hcd), | |
5742b0c9 | 1955 | "no HNP yet!\n"); |
1da177e4 LT |
1956 | } |
1957 | break; | |
f1c39fad | 1958 | case USB_PORT_FEAT_POWER: |
1cd8fd28 TB |
1959 | if (hcd->speed == HCD_USB3) |
1960 | dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; | |
1961 | else | |
1962 | dum_hcd->port_status |= USB_PORT_STAT_POWER; | |
cdfcbd2c | 1963 | set_link_state(dum_hcd); |
f1c39fad | 1964 | break; |
1cd8fd28 TB |
1965 | case USB_PORT_FEAT_BH_PORT_RESET: |
1966 | /* Applicable only for USB3.0 hub */ | |
1967 | if (hcd->speed != HCD_USB3) { | |
1968 | dev_dbg(dummy_dev(dum_hcd), | |
1969 | "USB_PORT_FEAT_BH_PORT_RESET req not " | |
1970 | "supported for USB 2.0 roothub\n"); | |
1971 | goto error; | |
1972 | } | |
1973 | /* FALLS THROUGH */ | |
1da177e4 | 1974 | case USB_PORT_FEAT_RESET: |
f1c39fad | 1975 | /* if it's already enabled, disable */ |
1cd8fd28 TB |
1976 | if (hcd->speed == HCD_USB3) { |
1977 | dum_hcd->port_status = 0; | |
1978 | dum_hcd->port_status = | |
1979 | (USB_SS_PORT_STAT_POWER | | |
1980 | USB_PORT_STAT_CONNECTION | | |
1981 | USB_PORT_STAT_RESET); | |
1982 | } else | |
1983 | dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE | |
f1c39fad AS |
1984 | | USB_PORT_STAT_LOW_SPEED |
1985 | | USB_PORT_STAT_HIGH_SPEED); | |
cdfcbd2c TB |
1986 | /* |
1987 | * We want to reset device status. All but the | |
1988 | * Self powered feature | |
1989 | */ | |
1990 | dum_hcd->dum->devstatus &= | |
1991 | (1 << USB_DEVICE_SELF_POWERED); | |
1cd8fd28 TB |
1992 | /* |
1993 | * FIXME USB3.0: what is the correct reset signaling | |
1994 | * interval? Is it still 50msec as for HS? | |
1995 | */ | |
cdfcbd2c | 1996 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); |
f1c39fad | 1997 | /* FALLS THROUGH */ |
1da177e4 | 1998 | default: |
1cd8fd28 TB |
1999 | if (hcd->speed == HCD_USB3) { |
2000 | if ((dum_hcd->port_status & | |
2001 | USB_SS_PORT_STAT_POWER) != 0) { | |
2002 | dum_hcd->port_status |= (1 << wValue); | |
2003 | set_link_state(dum_hcd); | |
2004 | } | |
2005 | } else | |
2006 | if ((dum_hcd->port_status & | |
2007 | USB_PORT_STAT_POWER) != 0) { | |
2008 | dum_hcd->port_status |= (1 << wValue); | |
2009 | set_link_state(dum_hcd); | |
2010 | } | |
2011 | } | |
2012 | break; | |
2013 | case GetPortErrorCount: | |
2014 | if (hcd->speed != HCD_USB3) { | |
2015 | dev_dbg(dummy_dev(dum_hcd), | |
2016 | "GetPortErrorCount req not " | |
2017 | "supported for USB 2.0 roothub\n"); | |
2018 | goto error; | |
2019 | } | |
2020 | /* We'll always return 0 since this is a dummy hub */ | |
2021 | *(__le32 *) buf = cpu_to_le32(0); | |
2022 | break; | |
2023 | case SetHubDepth: | |
2024 | if (hcd->speed != HCD_USB3) { | |
2025 | dev_dbg(dummy_dev(dum_hcd), | |
2026 | "SetHubDepth req not supported for " | |
2027 | "USB 2.0 roothub\n"); | |
2028 | goto error; | |
1da177e4 LT |
2029 | } |
2030 | break; | |
1da177e4 | 2031 | default: |
cdfcbd2c | 2032 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
2033 | "hub control req%04x v%04x i%04x l%d\n", |
2034 | typeReq, wValue, wIndex, wLength); | |
1cd8fd28 | 2035 | error: |
1da177e4 LT |
2036 | /* "protocol stall" on error */ |
2037 | retval = -EPIPE; | |
2038 | } | |
cdfcbd2c | 2039 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
685eb93f | 2040 | |
cdfcbd2c | 2041 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) |
685eb93f | 2042 | usb_hcd_poll_rh_status (hcd); |
1da177e4 LT |
2043 | return retval; |
2044 | } | |
2045 | ||
0c0382e3 | 2046 | static int dummy_bus_suspend (struct usb_hcd *hcd) |
391eca9d | 2047 | { |
cdfcbd2c | 2048 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
391eca9d | 2049 | |
441b62c1 | 2050 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
3cf0a22e | 2051 | |
cdfcbd2c TB |
2052 | spin_lock_irq(&dum_hcd->dum->lock); |
2053 | dum_hcd->rh_state = DUMMY_RH_SUSPENDED; | |
2054 | set_link_state(dum_hcd); | |
3cf0a22e | 2055 | hcd->state = HC_STATE_SUSPENDED; |
cdfcbd2c | 2056 | spin_unlock_irq(&dum_hcd->dum->lock); |
391eca9d AS |
2057 | return 0; |
2058 | } | |
2059 | ||
0c0382e3 | 2060 | static int dummy_bus_resume (struct usb_hcd *hcd) |
391eca9d | 2061 | { |
cdfcbd2c | 2062 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
3cf0a22e AS |
2063 | int rc = 0; |
2064 | ||
441b62c1 | 2065 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
391eca9d | 2066 | |
cdfcbd2c | 2067 | spin_lock_irq(&dum_hcd->dum->lock); |
541c7d43 | 2068 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
cfa59dab | 2069 | rc = -ESHUTDOWN; |
3cf0a22e | 2070 | } else { |
cdfcbd2c TB |
2071 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
2072 | set_link_state(dum_hcd); | |
2073 | if (!list_empty(&dum_hcd->urbp_list)) | |
2074 | mod_timer(&dum_hcd->timer, jiffies); | |
3cf0a22e AS |
2075 | hcd->state = HC_STATE_RUNNING; |
2076 | } | |
cdfcbd2c | 2077 | spin_unlock_irq(&dum_hcd->dum->lock); |
3cf0a22e | 2078 | return rc; |
391eca9d | 2079 | } |
1da177e4 LT |
2080 | |
2081 | /*-------------------------------------------------------------------------*/ | |
2082 | ||
2083 | static inline ssize_t | |
2084 | show_urb (char *buf, size_t size, struct urb *urb) | |
2085 | { | |
2086 | int ep = usb_pipeendpoint (urb->pipe); | |
2087 | ||
2088 | return snprintf (buf, size, | |
2089 | "urb/%p %s ep%d%s%s len %d/%d\n", | |
2090 | urb, | |
2091 | ({ char *s; | |
2092 | switch (urb->dev->speed) { | |
7c884fe4 TB |
2093 | case USB_SPEED_LOW: |
2094 | s = "ls"; | |
2095 | break; | |
2096 | case USB_SPEED_FULL: | |
2097 | s = "fs"; | |
2098 | break; | |
2099 | case USB_SPEED_HIGH: | |
2100 | s = "hs"; | |
2101 | break; | |
1cd8fd28 TB |
2102 | case USB_SPEED_SUPER: |
2103 | s = "ss"; | |
2104 | break; | |
7c884fe4 TB |
2105 | default: |
2106 | s = "?"; | |
2107 | break; | |
1da177e4 LT |
2108 | }; s; }), |
2109 | ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", | |
2110 | ({ char *s; \ | |
2111 | switch (usb_pipetype (urb->pipe)) { \ | |
7c884fe4 TB |
2112 | case PIPE_CONTROL: \ |
2113 | s = ""; \ | |
2114 | break; \ | |
2115 | case PIPE_BULK: \ | |
2116 | s = "-bulk"; \ | |
2117 | break; \ | |
2118 | case PIPE_INTERRUPT: \ | |
2119 | s = "-int"; \ | |
2120 | break; \ | |
2121 | default: \ | |
2122 | s = "-iso"; \ | |
2123 | break; \ | |
1da177e4 LT |
2124 | }; s;}), |
2125 | urb->actual_length, urb->transfer_buffer_length); | |
2126 | } | |
2127 | ||
2128 | static ssize_t | |
10523b3b | 2129 | show_urbs (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
2130 | { |
2131 | struct usb_hcd *hcd = dev_get_drvdata (dev); | |
cdfcbd2c | 2132 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2133 | struct urbp *urbp; |
2134 | size_t size = 0; | |
2135 | unsigned long flags; | |
2136 | ||
cdfcbd2c TB |
2137 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
2138 | list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { | |
1da177e4 LT |
2139 | size_t temp; |
2140 | ||
2141 | temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); | |
2142 | buf += temp; | |
2143 | size += temp; | |
2144 | } | |
cdfcbd2c | 2145 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
2146 | |
2147 | return size; | |
2148 | } | |
2149 | static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); | |
2150 | ||
1cd8fd28 TB |
2151 | static int dummy_start_ss(struct dummy_hcd *dum_hcd) |
2152 | { | |
2153 | init_timer(&dum_hcd->timer); | |
2154 | dum_hcd->timer.function = dummy_timer; | |
2155 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2156 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
2157 | INIT_LIST_HEAD(&dum_hcd->urbp_list); | |
2158 | dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; | |
2159 | dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; | |
2160 | dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; | |
2161 | #ifdef CONFIG_USB_OTG | |
2162 | dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; | |
2163 | #endif | |
2164 | return 0; | |
2165 | ||
2166 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ | |
2167 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); | |
2168 | } | |
2169 | ||
cdfcbd2c | 2170 | static int dummy_start(struct usb_hcd *hcd) |
1da177e4 | 2171 | { |
cdfcbd2c | 2172 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2173 | |
2174 | /* | |
2175 | * MASTER side init ... we emulate a root hub that'll only ever | |
2176 | * talk to one device (the slave side). Also appears in sysfs, | |
2177 | * just like more familiar pci-based HCDs. | |
2178 | */ | |
1cd8fd28 TB |
2179 | if (!usb_hcd_is_primary_hcd(hcd)) |
2180 | return dummy_start_ss(dum_hcd); | |
2181 | ||
cdfcbd2c TB |
2182 | spin_lock_init(&dum_hcd->dum->lock); |
2183 | init_timer(&dum_hcd->timer); | |
2184 | dum_hcd->timer.function = dummy_timer; | |
2185 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2186 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
1da177e4 | 2187 | |
cdfcbd2c | 2188 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
1da177e4 | 2189 | |
caf29f62 | 2190 | hcd->power_budget = POWER_BUDGET; |
1da177e4 | 2191 | hcd->state = HC_STATE_RUNNING; |
685eb93f | 2192 | hcd->uses_new_polling = 1; |
1da177e4 | 2193 | |
5742b0c9 AS |
2194 | #ifdef CONFIG_USB_OTG |
2195 | hcd->self.otg_port = 1; | |
2196 | #endif | |
2197 | ||
1da177e4 | 2198 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
cdfcbd2c | 2199 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
1da177e4 LT |
2200 | } |
2201 | ||
2202 | static void dummy_stop (struct usb_hcd *hcd) | |
2203 | { | |
2204 | struct dummy *dum; | |
2205 | ||
cdfcbd2c TB |
2206 | dum = (hcd_to_dummy_hcd(hcd))->dum; |
2207 | device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); | |
2208 | usb_gadget_unregister_driver(dum->driver); | |
2209 | dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); | |
1da177e4 LT |
2210 | } |
2211 | ||
2212 | /*-------------------------------------------------------------------------*/ | |
2213 | ||
2214 | static int dummy_h_get_frame (struct usb_hcd *hcd) | |
2215 | { | |
2216 | return dummy_g_get_frame (NULL); | |
2217 | } | |
2218 | ||
cdfcbd2c TB |
2219 | static int dummy_setup(struct usb_hcd *hcd) |
2220 | { | |
2221 | if (usb_hcd_is_primary_hcd(hcd)) { | |
2222 | the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); | |
2223 | the_controller.hs_hcd->dum = &the_controller; | |
1cd8fd28 TB |
2224 | /* |
2225 | * Mark the first roothub as being USB 2.0. | |
2226 | * The USB 3.0 roothub will be registered later by | |
2227 | * dummy_hcd_probe() | |
2228 | */ | |
cdfcbd2c TB |
2229 | hcd->speed = HCD_USB2; |
2230 | hcd->self.root_hub->speed = USB_SPEED_HIGH; | |
1cd8fd28 TB |
2231 | } else { |
2232 | the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); | |
2233 | the_controller.ss_hcd->dum = &the_controller; | |
2234 | hcd->speed = HCD_USB3; | |
2235 | hcd->self.root_hub->speed = USB_SPEED_SUPER; | |
cdfcbd2c TB |
2236 | } |
2237 | return 0; | |
2238 | } | |
2239 | ||
1cd8fd28 TB |
2240 | /* Change a group of bulk endpoints to support multiple stream IDs */ |
2241 | int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, | |
2242 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
2243 | unsigned int num_streams, gfp_t mem_flags) | |
2244 | { | |
2245 | if (hcd->speed != HCD_USB3) | |
2246 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), | |
2247 | "%s() - ERROR! Not supported for USB2.0 roothub\n", | |
2248 | __func__); | |
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | /* Reverts a group of bulk endpoints back to not using stream IDs. */ | |
2253 | int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, | |
2254 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
2255 | gfp_t mem_flags) | |
2256 | { | |
2257 | if (hcd->speed != HCD_USB3) | |
2258 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), | |
2259 | "%s() - ERROR! Not supported for USB2.0 roothub\n", | |
2260 | __func__); | |
2261 | return 0; | |
2262 | } | |
2263 | ||
2264 | static struct hc_driver dummy_hcd = { | |
1da177e4 LT |
2265 | .description = (char *) driver_name, |
2266 | .product_desc = "Dummy host controller", | |
cdfcbd2c | 2267 | .hcd_priv_size = sizeof(struct dummy_hcd), |
1da177e4 | 2268 | |
1cd8fd28 | 2269 | .flags = HCD_USB3 | HCD_SHARED, |
1da177e4 | 2270 | |
cdfcbd2c | 2271 | .reset = dummy_setup, |
1da177e4 LT |
2272 | .start = dummy_start, |
2273 | .stop = dummy_stop, | |
2274 | ||
2275 | .urb_enqueue = dummy_urb_enqueue, | |
2276 | .urb_dequeue = dummy_urb_dequeue, | |
2277 | ||
2278 | .get_frame_number = dummy_h_get_frame, | |
2279 | ||
2280 | .hub_status_data = dummy_hub_status, | |
2281 | .hub_control = dummy_hub_control, | |
0c0382e3 AS |
2282 | .bus_suspend = dummy_bus_suspend, |
2283 | .bus_resume = dummy_bus_resume, | |
1cd8fd28 TB |
2284 | |
2285 | .alloc_streams = dummy_alloc_streams, | |
2286 | .free_streams = dummy_free_streams, | |
1da177e4 LT |
2287 | }; |
2288 | ||
8364d6b0 | 2289 | static int dummy_hcd_probe(struct platform_device *pdev) |
1da177e4 | 2290 | { |
cdfcbd2c | 2291 | struct usb_hcd *hs_hcd; |
1cd8fd28 | 2292 | struct usb_hcd *ss_hcd; |
1da177e4 LT |
2293 | int retval; |
2294 | ||
8364d6b0 | 2295 | dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); |
1da177e4 | 2296 | |
1cd8fd28 TB |
2297 | if (!mod_data.is_super_speed) |
2298 | dummy_hcd.flags = HCD_USB2; | |
cdfcbd2c TB |
2299 | hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); |
2300 | if (!hs_hcd) | |
1da177e4 | 2301 | return -ENOMEM; |
cdfcbd2c | 2302 | hs_hcd->has_tt = 1; |
1da177e4 | 2303 | |
cdfcbd2c | 2304 | retval = usb_add_hcd(hs_hcd, 0, 0); |
1da177e4 | 2305 | if (retval != 0) { |
cdfcbd2c | 2306 | usb_put_hcd(hs_hcd); |
1cd8fd28 | 2307 | return retval; |
1da177e4 | 2308 | } |
1cd8fd28 TB |
2309 | |
2310 | if (mod_data.is_super_speed) { | |
2311 | ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, | |
2312 | dev_name(&pdev->dev), hs_hcd); | |
2313 | if (!ss_hcd) { | |
2314 | retval = -ENOMEM; | |
2315 | goto dealloc_usb2_hcd; | |
2316 | } | |
2317 | ||
2318 | retval = usb_add_hcd(ss_hcd, 0, 0); | |
2319 | if (retval) | |
2320 | goto put_usb3_hcd; | |
2321 | } | |
2322 | return 0; | |
2323 | ||
2324 | put_usb3_hcd: | |
2325 | usb_put_hcd(ss_hcd); | |
2326 | dealloc_usb2_hcd: | |
2327 | usb_put_hcd(hs_hcd); | |
2328 | the_controller.hs_hcd = the_controller.ss_hcd = NULL; | |
1da177e4 LT |
2329 | return retval; |
2330 | } | |
2331 | ||
cdfcbd2c | 2332 | static int dummy_hcd_remove(struct platform_device *pdev) |
1da177e4 | 2333 | { |
cdfcbd2c TB |
2334 | struct dummy *dum; |
2335 | ||
2336 | dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; | |
1cd8fd28 TB |
2337 | |
2338 | if (dum->ss_hcd) { | |
2339 | usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2340 | usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2341 | } | |
2342 | ||
cdfcbd2c TB |
2343 | usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
2344 | usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); | |
1cd8fd28 | 2345 | |
cdfcbd2c | 2346 | the_controller.hs_hcd = NULL; |
1cd8fd28 | 2347 | the_controller.ss_hcd = NULL; |
1da177e4 | 2348 | |
d9b76251 | 2349 | return 0; |
1da177e4 LT |
2350 | } |
2351 | ||
8364d6b0 | 2352 | static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) |
391eca9d AS |
2353 | { |
2354 | struct usb_hcd *hcd; | |
cdfcbd2c | 2355 | struct dummy_hcd *dum_hcd; |
3cf0a22e | 2356 | int rc = 0; |
391eca9d | 2357 | |
441b62c1 | 2358 | dev_dbg (&pdev->dev, "%s\n", __func__); |
391eca9d | 2359 | |
3cf0a22e | 2360 | hcd = platform_get_drvdata (pdev); |
cdfcbd2c TB |
2361 | dum_hcd = hcd_to_dummy_hcd(hcd); |
2362 | if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
3cf0a22e AS |
2363 | dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); |
2364 | rc = -EBUSY; | |
2365 | } else | |
2366 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
2367 | return rc; | |
391eca9d AS |
2368 | } |
2369 | ||
8364d6b0 | 2370 | static int dummy_hcd_resume (struct platform_device *pdev) |
391eca9d AS |
2371 | { |
2372 | struct usb_hcd *hcd; | |
2373 | ||
441b62c1 | 2374 | dev_dbg (&pdev->dev, "%s\n", __func__); |
391eca9d | 2375 | |
3cf0a22e AS |
2376 | hcd = platform_get_drvdata (pdev); |
2377 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
391eca9d AS |
2378 | usb_hcd_poll_rh_status (hcd); |
2379 | return 0; | |
2380 | } | |
2381 | ||
3ae5eaec | 2382 | static struct platform_driver dummy_hcd_driver = { |
d9b76251 AS |
2383 | .probe = dummy_hcd_probe, |
2384 | .remove = dummy_hcd_remove, | |
391eca9d AS |
2385 | .suspend = dummy_hcd_suspend, |
2386 | .resume = dummy_hcd_resume, | |
3ae5eaec RK |
2387 | .driver = { |
2388 | .name = (char *) driver_name, | |
2389 | .owner = THIS_MODULE, | |
2390 | }, | |
d9b76251 | 2391 | }; |
1da177e4 | 2392 | |
d9b76251 | 2393 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 2394 | |
a89a2cd3 AS |
2395 | static struct platform_device *the_udc_pdev; |
2396 | static struct platform_device *the_hcd_pdev; | |
1da177e4 LT |
2397 | |
2398 | static int __init init (void) | |
2399 | { | |
a89a2cd3 | 2400 | int retval = -ENOMEM; |
1da177e4 LT |
2401 | |
2402 | if (usb_disabled ()) | |
2403 | return -ENODEV; | |
d9b76251 | 2404 | |
7eca4c5a TB |
2405 | if (!mod_data.is_high_speed && mod_data.is_super_speed) |
2406 | return -EINVAL; | |
2407 | ||
a89a2cd3 AS |
2408 | the_hcd_pdev = platform_device_alloc(driver_name, -1); |
2409 | if (!the_hcd_pdev) | |
1da177e4 | 2410 | return retval; |
a89a2cd3 AS |
2411 | the_udc_pdev = platform_device_alloc(gadget_name, -1); |
2412 | if (!the_udc_pdev) | |
2413 | goto err_alloc_udc; | |
d9b76251 | 2414 | |
a89a2cd3 AS |
2415 | retval = platform_driver_register(&dummy_hcd_driver); |
2416 | if (retval < 0) | |
2417 | goto err_register_hcd_driver; | |
2418 | retval = platform_driver_register(&dummy_udc_driver); | |
d9b76251 AS |
2419 | if (retval < 0) |
2420 | goto err_register_udc_driver; | |
2421 | ||
a89a2cd3 | 2422 | retval = platform_device_add(the_hcd_pdev); |
d9b76251 | 2423 | if (retval < 0) |
a89a2cd3 | 2424 | goto err_add_hcd; |
1cd8fd28 TB |
2425 | if (!the_controller.hs_hcd || |
2426 | (!the_controller.ss_hcd && mod_data.is_super_speed)) { | |
865835fa SAS |
2427 | /* |
2428 | * The hcd was added successfully but its probe function failed | |
2429 | * for some reason. | |
2430 | */ | |
2431 | retval = -EINVAL; | |
2432 | goto err_add_udc; | |
2433 | } | |
a89a2cd3 | 2434 | retval = platform_device_add(the_udc_pdev); |
d9b76251 | 2435 | if (retval < 0) |
a89a2cd3 | 2436 | goto err_add_udc; |
865835fa SAS |
2437 | if (!platform_get_drvdata(the_udc_pdev)) { |
2438 | /* | |
2439 | * The udc was added successfully but its probe function failed | |
2440 | * for some reason. | |
2441 | */ | |
2442 | retval = -EINVAL; | |
2443 | goto err_probe_udc; | |
2444 | } | |
d9b76251 AS |
2445 | return retval; |
2446 | ||
865835fa SAS |
2447 | err_probe_udc: |
2448 | platform_device_del(the_udc_pdev); | |
a89a2cd3 AS |
2449 | err_add_udc: |
2450 | platform_device_del(the_hcd_pdev); | |
2451 | err_add_hcd: | |
2452 | platform_driver_unregister(&dummy_udc_driver); | |
d9b76251 | 2453 | err_register_udc_driver: |
a89a2cd3 AS |
2454 | platform_driver_unregister(&dummy_hcd_driver); |
2455 | err_register_hcd_driver: | |
2456 | platform_device_put(the_udc_pdev); | |
2457 | err_alloc_udc: | |
2458 | platform_device_put(the_hcd_pdev); | |
1da177e4 LT |
2459 | return retval; |
2460 | } | |
2461 | module_init (init); | |
2462 | ||
2463 | static void __exit cleanup (void) | |
2464 | { | |
a89a2cd3 AS |
2465 | platform_device_unregister(the_udc_pdev); |
2466 | platform_device_unregister(the_hcd_pdev); | |
2467 | platform_driver_unregister(&dummy_udc_driver); | |
2468 | platform_driver_unregister(&dummy_hcd_driver); | |
1da177e4 LT |
2469 | } |
2470 | module_exit (cleanup); |