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> |
14fce33a | 42 | #include <linux/scatterlist.h> |
1da177e4 LT |
43 | |
44 | #include <asm/byteorder.h> | |
18f2cbaa | 45 | #include <linux/io.h> |
1da177e4 LT |
46 | #include <asm/irq.h> |
47 | #include <asm/system.h> | |
48 | #include <asm/unaligned.h> | |
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 | ||
18f2cbaa SAS |
55 | static const char driver_name[] = "dummy_hcd"; |
56 | static const char driver_desc[] = "USB Host+Gadget Emulator"; | |
1da177e4 | 57 | |
18f2cbaa | 58 | static const char gadget_name[] = "dummy_udc"; |
1da177e4 | 59 | |
18f2cbaa SAS |
60 | MODULE_DESCRIPTION(DRIVER_DESC); |
61 | MODULE_AUTHOR("David Brownell"); | |
62 | MODULE_LICENSE("GPL"); | |
1da177e4 | 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; | |
18f2cbaa SAS |
86 | unsigned halted:1; |
87 | unsigned wedged:1; | |
88 | unsigned already_seen:1; | |
89 | unsigned setup_stage:1; | |
a54c979f | 90 | unsigned stream_en:1; |
1da177e4 LT |
91 | }; |
92 | ||
93 | struct dummy_request { | |
94 | struct list_head queue; /* ep's requests */ | |
95 | struct usb_request req; | |
96 | }; | |
97 | ||
18f2cbaa | 98 | static inline struct dummy_ep *usb_ep_to_dummy_ep(struct usb_ep *_ep) |
1da177e4 | 99 | { |
18f2cbaa | 100 | return container_of(_ep, struct dummy_ep, ep); |
1da177e4 LT |
101 | } |
102 | ||
103 | static inline struct dummy_request *usb_request_to_dummy_request | |
104 | (struct usb_request *_req) | |
105 | { | |
18f2cbaa | 106 | return container_of(_req, struct dummy_request, req); |
1da177e4 LT |
107 | } |
108 | ||
109 | /*-------------------------------------------------------------------------*/ | |
110 | ||
111 | /* | |
112 | * Every device has ep0 for control requests, plus up to 30 more endpoints, | |
113 | * in one of two types: | |
114 | * | |
115 | * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint | |
116 | * number can be changed. Names like "ep-a" are used for this type. | |
117 | * | |
118 | * - Fixed Function: in other cases. some characteristics may be mutable; | |
119 | * that'd be hardware-specific. Names like "ep12out-bulk" are used. | |
120 | * | |
121 | * Gadget drivers are responsible for not setting up conflicting endpoint | |
122 | * configurations, illegal or unsupported packet lengths, and so on. | |
123 | */ | |
124 | ||
18f2cbaa | 125 | static const char ep0name[] = "ep0"; |
1da177e4 | 126 | |
18f2cbaa | 127 | static const char *const ep_name[] = { |
1da177e4 LT |
128 | ep0name, /* everyone has ep0 */ |
129 | ||
130 | /* act like a net2280: high speed, six configurable endpoints */ | |
131 | "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", | |
132 | ||
133 | /* or like pxa250: fifteen fixed function endpoints */ | |
134 | "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", | |
135 | "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", | |
136 | "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", | |
137 | "ep15in-int", | |
138 | ||
139 | /* or like sa1100: two fixed function endpoints */ | |
140 | "ep1out-bulk", "ep2in-bulk", | |
141 | }; | |
52950ed4 | 142 | #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) |
1da177e4 | 143 | |
d9b76251 AS |
144 | /*-------------------------------------------------------------------------*/ |
145 | ||
1da177e4 LT |
146 | #define FIFO_SIZE 64 |
147 | ||
148 | struct urbp { | |
149 | struct urb *urb; | |
150 | struct list_head urbp_list; | |
14fce33a SAS |
151 | struct sg_mapping_iter miter; |
152 | u32 miter_started; | |
1da177e4 LT |
153 | }; |
154 | ||
391eca9d AS |
155 | |
156 | enum dummy_rh_state { | |
157 | DUMMY_RH_RESET, | |
158 | DUMMY_RH_SUSPENDED, | |
159 | DUMMY_RH_RUNNING | |
160 | }; | |
161 | ||
cdfcbd2c TB |
162 | struct dummy_hcd { |
163 | struct dummy *dum; | |
164 | enum dummy_rh_state rh_state; | |
165 | struct timer_list timer; | |
166 | u32 port_status; | |
167 | u32 old_status; | |
168 | unsigned long re_timeout; | |
169 | ||
170 | struct usb_device *udev; | |
171 | struct list_head urbp_list; | |
a54c979f SAS |
172 | u32 stream_en_ep; |
173 | u8 num_stream[30 / 2]; | |
cdfcbd2c TB |
174 | |
175 | unsigned active:1; | |
176 | unsigned old_active:1; | |
177 | unsigned resuming:1; | |
178 | }; | |
179 | ||
1da177e4 LT |
180 | struct dummy { |
181 | spinlock_t lock; | |
182 | ||
183 | /* | |
184 | * SLAVE/GADGET side support | |
185 | */ | |
18f2cbaa | 186 | struct dummy_ep ep[DUMMY_ENDPOINTS]; |
1da177e4 LT |
187 | int address; |
188 | struct usb_gadget gadget; | |
189 | struct usb_gadget_driver *driver; | |
190 | struct dummy_request fifo_req; | |
18f2cbaa | 191 | u8 fifo_buf[FIFO_SIZE]; |
1da177e4 | 192 | u16 devstatus; |
391eca9d | 193 | unsigned udc_suspended:1; |
f1c39fad | 194 | unsigned pullup:1; |
1da177e4 LT |
195 | |
196 | /* | |
197 | * MASTER/HOST side support | |
198 | */ | |
cdfcbd2c | 199 | struct dummy_hcd *hs_hcd; |
1cd8fd28 | 200 | struct dummy_hcd *ss_hcd; |
1da177e4 LT |
201 | }; |
202 | ||
cdfcbd2c | 203 | static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) |
1da177e4 | 204 | { |
cdfcbd2c | 205 | return (struct dummy_hcd *) (hcd->hcd_priv); |
1da177e4 LT |
206 | } |
207 | ||
cdfcbd2c | 208 | static inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) |
1da177e4 LT |
209 | { |
210 | return container_of((void *) dum, struct usb_hcd, hcd_priv); | |
211 | } | |
212 | ||
cdfcbd2c | 213 | static inline struct device *dummy_dev(struct dummy_hcd *dum) |
1da177e4 | 214 | { |
cdfcbd2c | 215 | return dummy_hcd_to_hcd(dum)->self.controller; |
1da177e4 LT |
216 | } |
217 | ||
18f2cbaa | 218 | static inline struct device *udc_dev(struct dummy *dum) |
d9b76251 AS |
219 | { |
220 | return dum->gadget.dev.parent; | |
221 | } | |
222 | ||
18f2cbaa | 223 | static inline struct dummy *ep_to_dummy(struct dummy_ep *ep) |
1da177e4 | 224 | { |
18f2cbaa | 225 | return container_of(ep->gadget, struct dummy, gadget); |
1da177e4 LT |
226 | } |
227 | ||
cdfcbd2c | 228 | static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) |
1da177e4 | 229 | { |
cdfcbd2c | 230 | struct dummy *dum = container_of(gadget, struct dummy, gadget); |
1cd8fd28 TB |
231 | if (dum->gadget.speed == USB_SPEED_SUPER) |
232 | return dum->ss_hcd; | |
233 | else | |
234 | return dum->hs_hcd; | |
1da177e4 LT |
235 | } |
236 | ||
18f2cbaa | 237 | static inline struct dummy *gadget_dev_to_dummy(struct device *dev) |
1da177e4 | 238 | { |
18f2cbaa | 239 | return container_of(dev, struct dummy, gadget.dev); |
1da177e4 LT |
240 | } |
241 | ||
cdfcbd2c | 242 | static struct dummy the_controller; |
1da177e4 LT |
243 | |
244 | /*-------------------------------------------------------------------------*/ | |
245 | ||
f1c39fad AS |
246 | /* SLAVE/GADGET SIDE UTILITY ROUTINES */ |
247 | ||
248 | /* called with spinlock held */ | |
18f2cbaa | 249 | static void nuke(struct dummy *dum, struct dummy_ep *ep) |
f1c39fad | 250 | { |
18f2cbaa | 251 | while (!list_empty(&ep->queue)) { |
f1c39fad AS |
252 | struct dummy_request *req; |
253 | ||
18f2cbaa SAS |
254 | req = list_entry(ep->queue.next, struct dummy_request, queue); |
255 | list_del_init(&req->queue); | |
f1c39fad AS |
256 | req->req.status = -ESHUTDOWN; |
257 | ||
18f2cbaa SAS |
258 | spin_unlock(&dum->lock); |
259 | req->req.complete(&ep->ep, &req->req); | |
260 | spin_lock(&dum->lock); | |
f1c39fad AS |
261 | } |
262 | } | |
263 | ||
264 | /* caller must hold lock */ | |
18f2cbaa | 265 | static void stop_activity(struct dummy *dum) |
f1c39fad AS |
266 | { |
267 | struct dummy_ep *ep; | |
268 | ||
269 | /* prevent any more requests */ | |
270 | dum->address = 0; | |
271 | ||
272 | /* The timer is left running so that outstanding URBs can fail */ | |
273 | ||
274 | /* nuke any pending requests first, so driver i/o is quiesced */ | |
18f2cbaa SAS |
275 | list_for_each_entry(ep, &dum->gadget.ep_list, ep.ep_list) |
276 | nuke(dum, ep); | |
f1c39fad AS |
277 | |
278 | /* driver now does any non-usb quiescing necessary */ | |
279 | } | |
280 | ||
1cd8fd28 TB |
281 | /** |
282 | * set_link_state_by_speed() - Sets the current state of the link according to | |
283 | * the hcd speed | |
284 | * @dum_hcd: pointer to the dummy_hcd structure to update the link state for | |
285 | * | |
286 | * This function updates the port_status according to the link state and the | |
287 | * speed of the hcd. | |
288 | */ | |
289 | static void set_link_state_by_speed(struct dummy_hcd *dum_hcd) | |
290 | { | |
291 | struct dummy *dum = dum_hcd->dum; | |
292 | ||
293 | if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { | |
294 | if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { | |
295 | dum_hcd->port_status = 0; | |
296 | } else if (!dum->pullup || dum->udc_suspended) { | |
297 | /* UDC suspend must cause a disconnect */ | |
298 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
299 | USB_PORT_STAT_ENABLE); | |
300 | if ((dum_hcd->old_status & | |
301 | USB_PORT_STAT_CONNECTION) != 0) | |
302 | dum_hcd->port_status |= | |
303 | (USB_PORT_STAT_C_CONNECTION << 16); | |
304 | } else { | |
305 | /* device is connected and not suspended */ | |
306 | dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | | |
307 | USB_PORT_STAT_SPEED_5GBPS) ; | |
308 | if ((dum_hcd->old_status & | |
309 | USB_PORT_STAT_CONNECTION) == 0) | |
310 | dum_hcd->port_status |= | |
311 | (USB_PORT_STAT_C_CONNECTION << 16); | |
312 | if ((dum_hcd->port_status & | |
313 | USB_PORT_STAT_ENABLE) == 1 && | |
314 | (dum_hcd->port_status & | |
315 | USB_SS_PORT_LS_U0) == 1 && | |
316 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
317 | dum_hcd->active = 1; | |
318 | } | |
319 | } else { | |
320 | if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { | |
321 | dum_hcd->port_status = 0; | |
322 | } else if (!dum->pullup || dum->udc_suspended) { | |
323 | /* UDC suspend must cause a disconnect */ | |
324 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | | |
325 | USB_PORT_STAT_ENABLE | | |
326 | USB_PORT_STAT_LOW_SPEED | | |
327 | USB_PORT_STAT_HIGH_SPEED | | |
328 | USB_PORT_STAT_SUSPEND); | |
329 | if ((dum_hcd->old_status & | |
330 | USB_PORT_STAT_CONNECTION) != 0) | |
331 | dum_hcd->port_status |= | |
332 | (USB_PORT_STAT_C_CONNECTION << 16); | |
333 | } else { | |
334 | dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; | |
335 | if ((dum_hcd->old_status & | |
336 | USB_PORT_STAT_CONNECTION) == 0) | |
337 | dum_hcd->port_status |= | |
338 | (USB_PORT_STAT_C_CONNECTION << 16); | |
339 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) | |
340 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
341 | else if ((dum_hcd->port_status & | |
342 | USB_PORT_STAT_SUSPEND) == 0 && | |
343 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) | |
344 | dum_hcd->active = 1; | |
345 | } | |
346 | } | |
347 | } | |
348 | ||
f1c39fad | 349 | /* caller must hold lock */ |
cdfcbd2c | 350 | static void set_link_state(struct dummy_hcd *dum_hcd) |
f1c39fad | 351 | { |
cdfcbd2c TB |
352 | struct dummy *dum = dum_hcd->dum; |
353 | ||
354 | dum_hcd->active = 0; | |
1cd8fd28 TB |
355 | if (dum->pullup) |
356 | if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && | |
357 | dum->gadget.speed != USB_SPEED_SUPER) || | |
358 | (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && | |
359 | dum->gadget.speed == USB_SPEED_SUPER)) | |
360 | return; | |
361 | ||
362 | set_link_state_by_speed(dum_hcd); | |
f1c39fad | 363 | |
cdfcbd2c TB |
364 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || |
365 | dum_hcd->active) | |
366 | dum_hcd->resuming = 0; | |
f1c39fad | 367 | |
1cd8fd28 | 368 | /* if !connected or reset */ |
cdfcbd2c TB |
369 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || |
370 | (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { | |
1cd8fd28 TB |
371 | /* |
372 | * We're connected and not reset (reset occurred now), | |
373 | * and driver attached - disconnect! | |
374 | */ | |
cdfcbd2c | 375 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && |
1cd8fd28 TB |
376 | (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && |
377 | dum->driver) { | |
378 | stop_activity(dum); | |
379 | spin_unlock(&dum->lock); | |
380 | dum->driver->disconnect(&dum->gadget); | |
381 | spin_lock(&dum->lock); | |
f1c39fad | 382 | } |
cdfcbd2c TB |
383 | } else if (dum_hcd->active != dum_hcd->old_active) { |
384 | if (dum_hcd->old_active && dum->driver->suspend) { | |
1cd8fd28 TB |
385 | spin_unlock(&dum->lock); |
386 | dum->driver->suspend(&dum->gadget); | |
387 | spin_lock(&dum->lock); | |
388 | } else if (!dum_hcd->old_active && dum->driver->resume) { | |
389 | spin_unlock(&dum->lock); | |
390 | dum->driver->resume(&dum->gadget); | |
391 | spin_lock(&dum->lock); | |
f1c39fad AS |
392 | } |
393 | } | |
394 | ||
cdfcbd2c TB |
395 | dum_hcd->old_status = dum_hcd->port_status; |
396 | dum_hcd->old_active = dum_hcd->active; | |
f1c39fad AS |
397 | } |
398 | ||
399 | /*-------------------------------------------------------------------------*/ | |
400 | ||
1da177e4 LT |
401 | /* SLAVE/GADGET SIDE DRIVER |
402 | * | |
403 | * This only tracks gadget state. All the work is done when the host | |
404 | * side tries some (emulated) i/o operation. Real device controller | |
405 | * drivers would do real i/o using dma, fifos, irqs, timers, etc. | |
406 | */ | |
407 | ||
408 | #define is_enabled(dum) \ | |
409 | (dum->port_status & USB_PORT_STAT_ENABLE) | |
410 | ||
18f2cbaa SAS |
411 | static int dummy_enable(struct usb_ep *_ep, |
412 | const struct usb_endpoint_descriptor *desc) | |
1da177e4 LT |
413 | { |
414 | struct dummy *dum; | |
cdfcbd2c | 415 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
416 | struct dummy_ep *ep; |
417 | unsigned max; | |
418 | int retval; | |
419 | ||
18f2cbaa | 420 | ep = usb_ep_to_dummy_ep(_ep); |
1da177e4 LT |
421 | if (!_ep || !desc || ep->desc || _ep->name == ep0name |
422 | || desc->bDescriptorType != USB_DT_ENDPOINT) | |
423 | return -EINVAL; | |
18f2cbaa | 424 | dum = ep_to_dummy(ep); |
cdfcbd2c TB |
425 | if (!dum->driver) |
426 | return -ESHUTDOWN; | |
719e52cb SAS |
427 | |
428 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
cdfcbd2c | 429 | if (!is_enabled(dum_hcd)) |
1da177e4 | 430 | return -ESHUTDOWN; |
cdfcbd2c TB |
431 | |
432 | /* | |
433 | * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the | |
434 | * maximum packet size. | |
1cd8fd28 | 435 | * For SS devices the wMaxPacketSize is limited by 1024. |
cdfcbd2c | 436 | */ |
29cc8897 | 437 | max = usb_endpoint_maxp(desc) & 0x7ff; |
1da177e4 LT |
438 | |
439 | /* drivers must not request bad settings, since lower levels | |
440 | * (hardware or its drivers) may not check. some endpoints | |
441 | * can't do iso, many have maxpacket limitations, etc. | |
442 | * | |
443 | * since this "hardware" driver is here to help debugging, we | |
444 | * have some extra sanity checks. (there could be more though, | |
445 | * especially for "ep9out" style fixed function ones.) | |
446 | */ | |
447 | retval = -EINVAL; | |
59f08e6d | 448 | switch (usb_endpoint_type(desc)) { |
1da177e4 | 449 | case USB_ENDPOINT_XFER_BULK: |
18f2cbaa SAS |
450 | if (strstr(ep->ep.name, "-iso") |
451 | || strstr(ep->ep.name, "-int")) { | |
1da177e4 LT |
452 | goto done; |
453 | } | |
454 | switch (dum->gadget.speed) { | |
1cd8fd28 TB |
455 | case USB_SPEED_SUPER: |
456 | if (max == 1024) | |
457 | break; | |
458 | goto done; | |
1da177e4 LT |
459 | case USB_SPEED_HIGH: |
460 | if (max == 512) | |
461 | break; | |
9063ff44 IL |
462 | goto done; |
463 | case USB_SPEED_FULL: | |
464 | if (max == 8 || max == 16 || max == 32 || max == 64) | |
1da177e4 LT |
465 | /* we'll fake any legal size */ |
466 | break; | |
9063ff44 IL |
467 | /* save a return statement */ |
468 | default: | |
469 | goto done; | |
1da177e4 LT |
470 | } |
471 | break; | |
472 | case USB_ENDPOINT_XFER_INT: | |
18f2cbaa | 473 | if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ |
1da177e4 LT |
474 | goto done; |
475 | /* real hardware might not handle all packet sizes */ | |
476 | switch (dum->gadget.speed) { | |
1cd8fd28 | 477 | case USB_SPEED_SUPER: |
1da177e4 LT |
478 | case USB_SPEED_HIGH: |
479 | if (max <= 1024) | |
480 | break; | |
481 | /* save a return statement */ | |
482 | case USB_SPEED_FULL: | |
483 | if (max <= 64) | |
484 | break; | |
485 | /* save a return statement */ | |
486 | default: | |
487 | if (max <= 8) | |
488 | break; | |
489 | goto done; | |
490 | } | |
491 | break; | |
492 | case USB_ENDPOINT_XFER_ISOC: | |
18f2cbaa SAS |
493 | if (strstr(ep->ep.name, "-bulk") |
494 | || strstr(ep->ep.name, "-int")) | |
1da177e4 LT |
495 | goto done; |
496 | /* real hardware might not handle all packet sizes */ | |
497 | switch (dum->gadget.speed) { | |
1cd8fd28 | 498 | case USB_SPEED_SUPER: |
1da177e4 LT |
499 | case USB_SPEED_HIGH: |
500 | if (max <= 1024) | |
501 | break; | |
502 | /* save a return statement */ | |
503 | case USB_SPEED_FULL: | |
504 | if (max <= 1023) | |
505 | break; | |
506 | /* save a return statement */ | |
507 | default: | |
508 | goto done; | |
509 | } | |
510 | break; | |
511 | default: | |
512 | /* few chips support control except on ep0 */ | |
513 | goto done; | |
514 | } | |
515 | ||
516 | _ep->maxpacket = max; | |
517 | ep->desc = desc; | |
a54c979f SAS |
518 | if (usb_ss_max_streams(_ep->comp_desc)) { |
519 | if (!usb_endpoint_xfer_bulk(desc)) { | |
520 | dev_err(udc_dev(dum), "Can't enable stream support on " | |
521 | "non-bulk ep %s\n", _ep->name); | |
522 | return -EINVAL; | |
523 | } | |
524 | ep->stream_en = 1; | |
525 | } | |
1da177e4 | 526 | |
a54c979f | 527 | dev_dbg(udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d stream %s\n", |
1da177e4 LT |
528 | _ep->name, |
529 | desc->bEndpointAddress & 0x0f, | |
530 | (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", | |
531 | ({ char *val; | |
59f08e6d | 532 | switch (usb_endpoint_type(desc)) { |
7c884fe4 TB |
533 | case USB_ENDPOINT_XFER_BULK: |
534 | val = "bulk"; | |
535 | break; | |
536 | case USB_ENDPOINT_XFER_ISOC: | |
537 | val = "iso"; | |
538 | break; | |
539 | case USB_ENDPOINT_XFER_INT: | |
540 | val = "intr"; | |
541 | break; | |
542 | default: | |
543 | val = "ctrl"; | |
544 | break; | |
1da177e4 | 545 | }; val; }), |
a54c979f | 546 | max, ep->stream_en ? "enabled" : "disabled"); |
1da177e4 LT |
547 | |
548 | /* at this point real hardware should be NAKing transfers | |
549 | * to that endpoint, until a buffer is queued to it. | |
550 | */ | |
851a526d | 551 | ep->halted = ep->wedged = 0; |
1da177e4 LT |
552 | retval = 0; |
553 | done: | |
554 | return retval; | |
555 | } | |
556 | ||
18f2cbaa | 557 | static int dummy_disable(struct usb_ep *_ep) |
1da177e4 LT |
558 | { |
559 | struct dummy_ep *ep; | |
560 | struct dummy *dum; | |
561 | unsigned long flags; | |
562 | int retval; | |
563 | ||
18f2cbaa | 564 | ep = usb_ep_to_dummy_ep(_ep); |
1da177e4 LT |
565 | if (!_ep || !ep->desc || _ep->name == ep0name) |
566 | return -EINVAL; | |
18f2cbaa | 567 | dum = ep_to_dummy(ep); |
1da177e4 | 568 | |
18f2cbaa | 569 | spin_lock_irqsave(&dum->lock, flags); |
1da177e4 | 570 | ep->desc = NULL; |
a54c979f | 571 | ep->stream_en = 0; |
1da177e4 | 572 | retval = 0; |
18f2cbaa SAS |
573 | nuke(dum, ep); |
574 | spin_unlock_irqrestore(&dum->lock, flags); | |
1da177e4 | 575 | |
18f2cbaa | 576 | dev_dbg(udc_dev(dum), "disabled %s\n", _ep->name); |
1da177e4 LT |
577 | return retval; |
578 | } | |
579 | ||
18f2cbaa SAS |
580 | static struct usb_request *dummy_alloc_request(struct usb_ep *_ep, |
581 | gfp_t mem_flags) | |
1da177e4 LT |
582 | { |
583 | struct dummy_ep *ep; | |
584 | struct dummy_request *req; | |
585 | ||
586 | if (!_ep) | |
587 | return NULL; | |
18f2cbaa | 588 | ep = usb_ep_to_dummy_ep(_ep); |
1da177e4 | 589 | |
7039f422 | 590 | req = kzalloc(sizeof(*req), mem_flags); |
1da177e4 LT |
591 | if (!req) |
592 | return NULL; | |
18f2cbaa | 593 | INIT_LIST_HEAD(&req->queue); |
1da177e4 LT |
594 | return &req->req; |
595 | } | |
596 | ||
18f2cbaa | 597 | static void dummy_free_request(struct usb_ep *_ep, struct usb_request *_req) |
1da177e4 LT |
598 | { |
599 | struct dummy_ep *ep; | |
600 | struct dummy_request *req; | |
601 | ||
18f2cbaa | 602 | ep = usb_ep_to_dummy_ep(_ep); |
1da177e4 LT |
603 | if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) |
604 | return; | |
605 | ||
18f2cbaa SAS |
606 | req = usb_request_to_dummy_request(_req); |
607 | WARN_ON(!list_empty(&req->queue)); | |
608 | kfree(req); | |
1da177e4 LT |
609 | } |
610 | ||
18f2cbaa | 611 | static void fifo_complete(struct usb_ep *ep, struct usb_request *req) |
1da177e4 LT |
612 | { |
613 | } | |
614 | ||
18f2cbaa | 615 | static int dummy_queue(struct usb_ep *_ep, struct usb_request *_req, |
55016f10 | 616 | gfp_t mem_flags) |
1da177e4 LT |
617 | { |
618 | struct dummy_ep *ep; | |
619 | struct dummy_request *req; | |
620 | struct dummy *dum; | |
cdfcbd2c | 621 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
622 | unsigned long flags; |
623 | ||
18f2cbaa SAS |
624 | req = usb_request_to_dummy_request(_req); |
625 | if (!_req || !list_empty(&req->queue) || !_req->complete) | |
1da177e4 LT |
626 | return -EINVAL; |
627 | ||
18f2cbaa | 628 | ep = usb_ep_to_dummy_ep(_ep); |
1da177e4 LT |
629 | if (!_ep || (!ep->desc && _ep->name != ep0name)) |
630 | return -EINVAL; | |
631 | ||
18f2cbaa | 632 | dum = ep_to_dummy(ep); |
719e52cb | 633 | dum_hcd = gadget_to_dummy_hcd(&dum->gadget); |
cdfcbd2c | 634 | if (!dum->driver || !is_enabled(dum_hcd)) |
1da177e4 LT |
635 | return -ESHUTDOWN; |
636 | ||
637 | #if 0 | |
18f2cbaa | 638 | dev_dbg(udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", |
1da177e4 LT |
639 | ep, _req, _ep->name, _req->length, _req->buf); |
640 | #endif | |
1da177e4 LT |
641 | _req->status = -EINPROGRESS; |
642 | _req->actual = 0; | |
18f2cbaa | 643 | spin_lock_irqsave(&dum->lock, flags); |
1da177e4 LT |
644 | |
645 | /* implement an emulated single-request FIFO */ | |
646 | if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && | |
18f2cbaa SAS |
647 | list_empty(&dum->fifo_req.queue) && |
648 | list_empty(&ep->queue) && | |
1da177e4 LT |
649 | _req->length <= FIFO_SIZE) { |
650 | req = &dum->fifo_req; | |
651 | req->req = *_req; | |
652 | req->req.buf = dum->fifo_buf; | |
18f2cbaa | 653 | memcpy(dum->fifo_buf, _req->buf, _req->length); |
1da177e4 LT |
654 | req->req.context = dum; |
655 | req->req.complete = fifo_complete; | |
656 | ||
c728df70 | 657 | list_add_tail(&req->queue, &ep->queue); |
18f2cbaa | 658 | spin_unlock(&dum->lock); |
1da177e4 LT |
659 | _req->actual = _req->length; |
660 | _req->status = 0; | |
18f2cbaa SAS |
661 | _req->complete(_ep, _req); |
662 | spin_lock(&dum->lock); | |
c728df70 DB |
663 | } else |
664 | list_add_tail(&req->queue, &ep->queue); | |
18f2cbaa | 665 | spin_unlock_irqrestore(&dum->lock, flags); |
1da177e4 LT |
666 | |
667 | /* real hardware would likely enable transfers here, in case | |
668 | * it'd been left NAKing. | |
669 | */ | |
670 | return 0; | |
671 | } | |
672 | ||
18f2cbaa | 673 | static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
1da177e4 LT |
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; | |
18f2cbaa SAS |
683 | ep = usb_ep_to_dummy_ep(_ep); |
684 | dum = ep_to_dummy(ep); | |
1da177e4 LT |
685 | |
686 | if (!dum->driver) | |
687 | return -ESHUTDOWN; | |
688 | ||
18f2cbaa SAS |
689 | local_irq_save(flags); |
690 | spin_lock(&dum->lock); | |
691 | list_for_each_entry(req, &ep->queue, queue) { | |
1da177e4 | 692 | if (&req->req == _req) { |
18f2cbaa | 693 | list_del_init(&req->queue); |
1da177e4 LT |
694 | _req->status = -ECONNRESET; |
695 | retval = 0; | |
696 | break; | |
697 | } | |
698 | } | |
18f2cbaa | 699 | spin_unlock(&dum->lock); |
1da177e4 LT |
700 | |
701 | if (retval == 0) { | |
18f2cbaa | 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); | |
18f2cbaa | 705 | _req->complete(_ep, _req); |
1da177e4 | 706 | } |
18f2cbaa | 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; | |
18f2cbaa SAS |
719 | ep = usb_ep_to_dummy_ep(_ep); |
720 | dum = ep_to_dummy(ep); | |
1da177e4 LT |
721 | if (!dum->driver) |
722 | return -ESHUTDOWN; | |
723 | if (!value) | |
851a526d | 724 | ep->halted = ep->wedged = 0; |
1da177e4 | 725 | else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
18f2cbaa | 726 | !list_empty(&ep->queue)) |
1da177e4 | 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 ... */ | |
18f2cbaa | 767 | static int dummy_g_get_frame(struct usb_gadget *_gadget) |
1da177e4 LT |
768 | { |
769 | struct timeval tv; | |
770 | ||
18f2cbaa | 771 | do_gettimeofday(&tv); |
1da177e4 LT |
772 | return tv.tv_usec / 1000; |
773 | } | |
774 | ||
18f2cbaa | 775 | static int dummy_wakeup(struct usb_gadget *_gadget) |
1da177e4 | 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 | ||
18f2cbaa | 798 | static int dummy_set_selfpowered(struct usb_gadget *_gadget, int value) |
1da177e4 LT |
799 | { |
800 | struct dummy *dum; | |
801 | ||
18f2cbaa | 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 | ||
d262127c | 810 | static void dummy_udc_update_ep0(struct dummy *dum) |
b5738413 | 811 | { |
c6884191 | 812 | if (dum->gadget.speed == USB_SPEED_SUPER) |
b5738413 | 813 | dum->ep[0].ep.maxpacket = 9; |
c6884191 | 814 | else |
b5738413 | 815 | dum->ep[0].ep.maxpacket = 64; |
b5738413 SAS |
816 | } |
817 | ||
18f2cbaa | 818 | static int dummy_pullup(struct usb_gadget *_gadget, int value) |
f1c39fad | 819 | { |
d8a14a85 | 820 | struct dummy_hcd *dum_hcd; |
f1c39fad AS |
821 | struct dummy *dum; |
822 | unsigned long flags; | |
823 | ||
b5738413 SAS |
824 | dum = gadget_dev_to_dummy(&_gadget->dev); |
825 | ||
826 | if (value && dum->driver) { | |
827 | if (mod_data.is_super_speed) | |
7177aed4 | 828 | dum->gadget.speed = dum->driver->max_speed; |
b5738413 SAS |
829 | else if (mod_data.is_high_speed) |
830 | dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, | |
7177aed4 | 831 | dum->driver->max_speed); |
b5738413 SAS |
832 | else |
833 | dum->gadget.speed = USB_SPEED_FULL; | |
d262127c | 834 | dummy_udc_update_ep0(dum); |
b5738413 | 835 | |
7177aed4 | 836 | if (dum->gadget.speed < dum->driver->max_speed) |
b5738413 | 837 | dev_dbg(udc_dev(dum), "This device can perform faster" |
7177aed4 MN |
838 | " if you connect it to a %s port...\n", |
839 | usb_speed_string(dum->driver->max_speed)); | |
b5738413 | 840 | } |
d8a14a85 | 841 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
d8a14a85 | 842 | |
18f2cbaa | 843 | spin_lock_irqsave(&dum->lock, flags); |
f1c39fad | 844 | dum->pullup = (value != 0); |
d8a14a85 | 845 | set_link_state(dum_hcd); |
18f2cbaa | 846 | spin_unlock_irqrestore(&dum->lock, flags); |
b5738413 | 847 | |
d8a14a85 | 848 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
f1c39fad AS |
849 | return 0; |
850 | } | |
851 | ||
aa074739 SAS |
852 | static int dummy_udc_start(struct usb_gadget *g, |
853 | struct usb_gadget_driver *driver); | |
854 | static int dummy_udc_stop(struct usb_gadget *g, | |
855 | struct usb_gadget_driver *driver); | |
0f91349b | 856 | |
1da177e4 LT |
857 | static const struct usb_gadget_ops dummy_ops = { |
858 | .get_frame = dummy_g_get_frame, | |
859 | .wakeup = dummy_wakeup, | |
860 | .set_selfpowered = dummy_set_selfpowered, | |
f1c39fad | 861 | .pullup = dummy_pullup, |
aa074739 SAS |
862 | .udc_start = dummy_udc_start, |
863 | .udc_stop = dummy_udc_stop, | |
1da177e4 LT |
864 | }; |
865 | ||
866 | /*-------------------------------------------------------------------------*/ | |
867 | ||
868 | /* "function" sysfs attribute */ | |
18f2cbaa SAS |
869 | static ssize_t show_function(struct device *dev, struct device_attribute *attr, |
870 | char *buf) | |
1da177e4 | 871 | { |
18f2cbaa | 872 | struct dummy *dum = gadget_dev_to_dummy(dev); |
1da177e4 LT |
873 | |
874 | if (!dum->driver || !dum->driver->function) | |
875 | return 0; | |
18f2cbaa | 876 | return scnprintf(buf, PAGE_SIZE, "%s\n", dum->driver->function); |
1da177e4 | 877 | } |
18f2cbaa | 878 | static DEVICE_ATTR(function, S_IRUGO, show_function, NULL); |
1da177e4 LT |
879 | |
880 | /*-------------------------------------------------------------------------*/ | |
881 | ||
882 | /* | |
883 | * Driver registration/unregistration. | |
884 | * | |
885 | * This is basically hardware-specific; there's usually only one real USB | |
886 | * device (not host) controller since that's how USB devices are intended | |
887 | * to work. So most implementations of these api calls will rely on the | |
888 | * fact that only one driver will ever bind to the hardware. But curious | |
889 | * hardware can be built with discrete components, so the gadget API doesn't | |
890 | * require that assumption. | |
891 | * | |
892 | * For this emulator, it might be convenient to create a usb slave device | |
893 | * for each driver that registers: just add to a big root hub. | |
894 | */ | |
895 | ||
aa074739 SAS |
896 | static int dummy_udc_start(struct usb_gadget *g, |
897 | struct usb_gadget_driver *driver) | |
1da177e4 | 898 | { |
aa074739 SAS |
899 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
900 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 901 | |
7177aed4 | 902 | if (driver->max_speed == USB_SPEED_UNKNOWN) |
1da177e4 LT |
903 | return -EINVAL; |
904 | ||
905 | /* | |
906 | * SLAVE side init ... the layer above hardware, which | |
907 | * can't enumerate without help from the driver we're binding. | |
908 | */ | |
5742b0c9 | 909 | |
1da177e4 | 910 | dum->devstatus = 0; |
1da177e4 | 911 | |
1da177e4 | 912 | dum->driver = driver; |
18f2cbaa | 913 | dev_dbg(udc_dev(dum), "binding gadget driver '%s'\n", |
1da177e4 | 914 | driver->driver.name); |
1da177e4 LT |
915 | return 0; |
916 | } | |
1da177e4 | 917 | |
aa074739 SAS |
918 | static int dummy_udc_stop(struct usb_gadget *g, |
919 | struct usb_gadget_driver *driver) | |
1da177e4 | 920 | { |
aa074739 SAS |
921 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); |
922 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 | 923 | |
18f2cbaa | 924 | dev_dbg(udc_dev(dum), "unregister gadget driver '%s'\n", |
1da177e4 LT |
925 | driver->driver.name); |
926 | ||
1da177e4 | 927 | dum->driver = NULL; |
25427874 SAS |
928 | |
929 | dummy_pullup(&dum->gadget, 0); | |
1da177e4 LT |
930 | return 0; |
931 | } | |
1da177e4 LT |
932 | |
933 | #undef is_enabled | |
934 | ||
d9b76251 AS |
935 | /* The gadget structure is stored inside the hcd structure and will be |
936 | * released along with it. */ | |
18f2cbaa | 937 | static void dummy_gadget_release(struct device *dev) |
d9b76251 | 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; | |
c6884191 | 958 | ep->ep.max_streams = 16; |
0fb57599 SAS |
959 | ep->last_io = jiffies; |
960 | ep->gadget = &dum->gadget; | |
961 | ep->desc = NULL; | |
962 | INIT_LIST_HEAD(&ep->queue); | |
963 | } | |
964 | ||
965 | dum->gadget.ep0 = &dum->ep[0].ep; | |
966 | list_del_init(&dum->ep[0].ep.ep_list); | |
967 | INIT_LIST_HEAD(&dum->fifo_req.queue); | |
f8744d40 SAS |
968 | |
969 | #ifdef CONFIG_USB_OTG | |
970 | dum->gadget.is_otg = 1; | |
971 | #endif | |
0fb57599 SAS |
972 | } |
973 | ||
18f2cbaa | 974 | static int dummy_udc_probe(struct platform_device *pdev) |
d9b76251 | 975 | { |
cdfcbd2c | 976 | struct dummy *dum = &the_controller; |
d9b76251 AS |
977 | int rc; |
978 | ||
979 | dum->gadget.name = gadget_name; | |
980 | dum->gadget.ops = &dummy_ops; | |
d327ab5b | 981 | dum->gadget.max_speed = USB_SPEED_SUPER; |
d9b76251 | 982 | |
0031a06e | 983 | dev_set_name(&dum->gadget.dev, "gadget"); |
8364d6b0 | 984 | dum->gadget.dev.parent = &pdev->dev; |
d9b76251 | 985 | dum->gadget.dev.release = dummy_gadget_release; |
18f2cbaa | 986 | rc = device_register(&dum->gadget.dev); |
75d87cdf RR |
987 | if (rc < 0) { |
988 | put_device(&dum->gadget.dev); | |
d9b76251 | 989 | return rc; |
75d87cdf | 990 | } |
d9b76251 | 991 | |
0fb57599 SAS |
992 | init_dummy_udc_hw(dum); |
993 | ||
0f91349b SAS |
994 | rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); |
995 | if (rc < 0) | |
996 | goto err_udc; | |
997 | ||
18f2cbaa | 998 | rc = device_create_file(&dum->gadget.dev, &dev_attr_function); |
efd54a36 | 999 | if (rc < 0) |
0f91349b SAS |
1000 | goto err_dev; |
1001 | platform_set_drvdata(pdev, dum); | |
1002 | return rc; | |
1003 | ||
1004 | err_dev: | |
1005 | usb_del_gadget_udc(&dum->gadget); | |
1006 | err_udc: | |
1007 | device_unregister(&dum->gadget.dev); | |
d9b76251 AS |
1008 | return rc; |
1009 | } | |
1010 | ||
18f2cbaa | 1011 | static int dummy_udc_remove(struct platform_device *pdev) |
d9b76251 | 1012 | { |
18f2cbaa | 1013 | struct dummy *dum = platform_get_drvdata(pdev); |
d9b76251 | 1014 | |
0f91349b | 1015 | usb_del_gadget_udc(&dum->gadget); |
18f2cbaa SAS |
1016 | platform_set_drvdata(pdev, NULL); |
1017 | device_remove_file(&dum->gadget.dev, &dev_attr_function); | |
1018 | device_unregister(&dum->gadget.dev); | |
d9b76251 AS |
1019 | return 0; |
1020 | } | |
1021 | ||
fc0b721f SAS |
1022 | static void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, |
1023 | int suspend) | |
391eca9d | 1024 | { |
fc0b721f SAS |
1025 | spin_lock_irq(&dum->lock); |
1026 | dum->udc_suspended = suspend; | |
d8a14a85 | 1027 | set_link_state(dum_hcd); |
fc0b721f SAS |
1028 | spin_unlock_irq(&dum->lock); |
1029 | } | |
1030 | ||
1031 | static int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) | |
1032 | { | |
1033 | struct dummy *dum = platform_get_drvdata(pdev); | |
1034 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1035 | |
fc0b721f SAS |
1036 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1037 | dummy_udc_pm(dum, dum_hcd, 1); | |
d8a14a85 | 1038 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1039 | return 0; |
1040 | } | |
1041 | ||
fc0b721f | 1042 | static int dummy_udc_resume(struct platform_device *pdev) |
391eca9d | 1043 | { |
fc0b721f SAS |
1044 | struct dummy *dum = platform_get_drvdata(pdev); |
1045 | struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); | |
391eca9d | 1046 | |
fc0b721f SAS |
1047 | dev_dbg(&pdev->dev, "%s\n", __func__); |
1048 | dummy_udc_pm(dum, dum_hcd, 0); | |
d8a14a85 | 1049 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); |
391eca9d AS |
1050 | return 0; |
1051 | } | |
1052 | ||
3ae5eaec | 1053 | static struct platform_driver dummy_udc_driver = { |
d9b76251 AS |
1054 | .probe = dummy_udc_probe, |
1055 | .remove = dummy_udc_remove, | |
391eca9d AS |
1056 | .suspend = dummy_udc_suspend, |
1057 | .resume = dummy_udc_resume, | |
3ae5eaec RK |
1058 | .driver = { |
1059 | .name = (char *) gadget_name, | |
1060 | .owner = THIS_MODULE, | |
1061 | }, | |
d9b76251 AS |
1062 | }; |
1063 | ||
1da177e4 LT |
1064 | /*-------------------------------------------------------------------------*/ |
1065 | ||
a54c979f SAS |
1066 | static unsigned int dummy_get_ep_idx(const struct usb_endpoint_descriptor *desc) |
1067 | { | |
1068 | unsigned int index; | |
1069 | ||
1070 | index = usb_endpoint_num(desc) << 1; | |
1071 | if (usb_endpoint_dir_in(desc)) | |
1072 | index |= 1; | |
1073 | return index; | |
1074 | } | |
1075 | ||
1da177e4 LT |
1076 | /* MASTER/HOST SIDE DRIVER |
1077 | * | |
1078 | * this uses the hcd framework to hook up to host side drivers. | |
1079 | * its root hub will only have one device, otherwise it acts like | |
1080 | * a normal host controller. | |
1081 | * | |
1082 | * when urbs are queued, they're just stuck on a list that we | |
1083 | * scan in a timer callback. that callback connects writes from | |
1084 | * the host with reads from the device, and so on, based on the | |
1085 | * usb 2.0 rules. | |
1086 | */ | |
1087 | ||
a54c979f SAS |
1088 | static int dummy_ep_stream_en(struct dummy_hcd *dum_hcd, struct urb *urb) |
1089 | { | |
1090 | const struct usb_endpoint_descriptor *desc = &urb->ep->desc; | |
1091 | u32 index; | |
1092 | ||
1093 | if (!usb_endpoint_xfer_bulk(desc)) | |
1094 | return 0; | |
1095 | ||
1096 | index = dummy_get_ep_idx(desc); | |
1097 | return (1 << index) & dum_hcd->stream_en_ep; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * The max stream number is saved as a nibble so for the 30 possible endpoints | |
1102 | * we only 15 bytes of memory. Therefore we are limited to max 16 streams (0 | |
1103 | * means we use only 1 stream). The maximum according to the spec is 16bit so | |
1104 | * if the 16 stream limit is about to go, the array size should be incremented | |
1105 | * to 30 elements of type u16. | |
1106 | */ | |
1107 | static int get_max_streams_for_pipe(struct dummy_hcd *dum_hcd, | |
1108 | unsigned int pipe) | |
1109 | { | |
1110 | int max_streams; | |
1111 | ||
1112 | max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; | |
1113 | if (usb_pipeout(pipe)) | |
1114 | max_streams >>= 4; | |
1115 | else | |
1116 | max_streams &= 0xf; | |
1117 | max_streams++; | |
1118 | return max_streams; | |
1119 | } | |
1120 | ||
1121 | static void set_max_streams_for_pipe(struct dummy_hcd *dum_hcd, | |
1122 | unsigned int pipe, unsigned int streams) | |
1123 | { | |
1124 | int max_streams; | |
1125 | ||
1126 | streams--; | |
1127 | max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; | |
1128 | if (usb_pipeout(pipe)) { | |
1129 | streams <<= 4; | |
1130 | max_streams &= 0xf; | |
1131 | } else { | |
1132 | max_streams &= 0xf0; | |
1133 | } | |
1134 | max_streams |= streams; | |
1135 | dum_hcd->num_stream[usb_pipeendpoint(pipe)] = max_streams; | |
1136 | } | |
1137 | ||
1138 | static int dummy_validate_stream(struct dummy_hcd *dum_hcd, struct urb *urb) | |
1139 | { | |
1140 | unsigned int max_streams; | |
1141 | int enabled; | |
1142 | ||
1143 | enabled = dummy_ep_stream_en(dum_hcd, urb); | |
1144 | if (!urb->stream_id) { | |
1145 | if (enabled) | |
1146 | return -EINVAL; | |
1147 | return 0; | |
1148 | } | |
1149 | if (!enabled) | |
1150 | return -EINVAL; | |
1151 | ||
1152 | max_streams = get_max_streams_for_pipe(dum_hcd, | |
1153 | usb_pipeendpoint(urb->pipe)); | |
1154 | if (urb->stream_id > max_streams) { | |
1155 | dev_err(dummy_dev(dum_hcd), "Stream id %d is out of range.\n", | |
1156 | urb->stream_id); | |
1157 | BUG(); | |
1158 | return -EINVAL; | |
1159 | } | |
1160 | return 0; | |
1161 | } | |
1162 | ||
18f2cbaa | 1163 | static int dummy_urb_enqueue( |
1da177e4 | 1164 | struct usb_hcd *hcd, |
1da177e4 | 1165 | struct urb *urb, |
55016f10 | 1166 | gfp_t mem_flags |
1da177e4 | 1167 | ) { |
cdfcbd2c | 1168 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1169 | struct urbp *urbp; |
1170 | unsigned long flags; | |
e9df41c5 | 1171 | int rc; |
1da177e4 | 1172 | |
18f2cbaa | 1173 | urbp = kmalloc(sizeof *urbp, mem_flags); |
1da177e4 LT |
1174 | if (!urbp) |
1175 | return -ENOMEM; | |
1176 | urbp->urb = urb; | |
14fce33a | 1177 | urbp->miter_started = 0; |
1da177e4 | 1178 | |
cdfcbd2c TB |
1179 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1180 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
a54c979f SAS |
1181 | |
1182 | rc = dummy_validate_stream(dum_hcd, urb); | |
1183 | if (rc) { | |
1184 | kfree(urbp); | |
1185 | goto done; | |
1186 | } | |
1187 | ||
e9df41c5 AS |
1188 | rc = usb_hcd_link_urb_to_ep(hcd, urb); |
1189 | if (rc) { | |
1190 | kfree(urbp); | |
1191 | goto done; | |
1192 | } | |
1da177e4 | 1193 | |
cdfcbd2c TB |
1194 | if (!dum_hcd->udev) { |
1195 | dum_hcd->udev = urb->dev; | |
1196 | usb_get_dev(dum_hcd->udev); | |
1197 | } else if (unlikely(dum_hcd->udev != urb->dev)) | |
1198 | dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); | |
1da177e4 | 1199 | |
cdfcbd2c | 1200 | list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); |
1da177e4 | 1201 | urb->hcpriv = urbp; |
18f2cbaa | 1202 | if (usb_pipetype(urb->pipe) == PIPE_CONTROL) |
1da177e4 LT |
1203 | urb->error_count = 1; /* mark as a new urb */ |
1204 | ||
1205 | /* kick the scheduler, it'll do the rest */ | |
cdfcbd2c TB |
1206 | if (!timer_pending(&dum_hcd->timer)) |
1207 | mod_timer(&dum_hcd->timer, jiffies + 1); | |
1da177e4 | 1208 | |
e9df41c5 | 1209 | done: |
cdfcbd2c | 1210 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1211 | return rc; |
1da177e4 LT |
1212 | } |
1213 | ||
e9df41c5 | 1214 | static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
1da177e4 | 1215 | { |
cdfcbd2c | 1216 | struct dummy_hcd *dum_hcd; |
391eca9d | 1217 | unsigned long flags; |
e9df41c5 | 1218 | int rc; |
391eca9d AS |
1219 | |
1220 | /* giveback happens automatically in timer callback, | |
1221 | * so make sure the callback happens */ | |
cdfcbd2c TB |
1222 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1223 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
e9df41c5 AS |
1224 | |
1225 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); | |
cdfcbd2c TB |
1226 | if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && |
1227 | !list_empty(&dum_hcd->urbp_list)) | |
1228 | mod_timer(&dum_hcd->timer, jiffies); | |
e9df41c5 | 1229 | |
cdfcbd2c | 1230 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
e9df41c5 | 1231 | return rc; |
1da177e4 LT |
1232 | } |
1233 | ||
a04ce20d SAS |
1234 | static int dummy_perform_transfer(struct urb *urb, struct dummy_request *req, |
1235 | u32 len) | |
1236 | { | |
1237 | void *ubuf, *rbuf; | |
14fce33a | 1238 | struct urbp *urbp = urb->hcpriv; |
a04ce20d | 1239 | int to_host; |
14fce33a SAS |
1240 | struct sg_mapping_iter *miter = &urbp->miter; |
1241 | u32 trans = 0; | |
1242 | u32 this_sg; | |
1243 | bool next_sg; | |
a04ce20d SAS |
1244 | |
1245 | to_host = usb_pipein(urb->pipe); | |
1246 | rbuf = req->req.buf + req->req.actual; | |
a04ce20d | 1247 | |
14fce33a SAS |
1248 | if (!urb->num_sgs) { |
1249 | ubuf = urb->transfer_buffer + urb->actual_length; | |
1250 | if (to_host) | |
1251 | memcpy(ubuf, rbuf, len); | |
1252 | else | |
1253 | memcpy(rbuf, ubuf, len); | |
1254 | return len; | |
1255 | } | |
1256 | ||
1257 | if (!urbp->miter_started) { | |
1258 | u32 flags = SG_MITER_ATOMIC; | |
1259 | ||
1260 | if (to_host) | |
1261 | flags |= SG_MITER_TO_SG; | |
1262 | else | |
1263 | flags |= SG_MITER_FROM_SG; | |
1264 | ||
1265 | sg_miter_start(miter, urb->sg, urb->num_sgs, flags); | |
1266 | urbp->miter_started = 1; | |
1267 | } | |
1268 | next_sg = sg_miter_next(miter); | |
1269 | if (next_sg == false) { | |
1270 | WARN_ON_ONCE(1); | |
1271 | return -EINVAL; | |
1272 | } | |
1273 | do { | |
1274 | ubuf = miter->addr; | |
1275 | this_sg = min_t(u32, len, miter->length); | |
1276 | miter->consumed = this_sg; | |
1277 | trans += this_sg; | |
1278 | ||
1279 | if (to_host) | |
1280 | memcpy(ubuf, rbuf, this_sg); | |
1281 | else | |
1282 | memcpy(rbuf, ubuf, this_sg); | |
1283 | len -= this_sg; | |
1284 | ||
1285 | if (!len) | |
1286 | break; | |
1287 | next_sg = sg_miter_next(miter); | |
1288 | if (next_sg == false) { | |
1289 | WARN_ON_ONCE(1); | |
1290 | return -EINVAL; | |
1291 | } | |
1292 | ||
1293 | rbuf += this_sg; | |
1294 | } while (1); | |
1295 | ||
1296 | sg_miter_stop(miter); | |
1297 | return trans; | |
a04ce20d SAS |
1298 | } |
1299 | ||
1da177e4 | 1300 | /* transfer up to a frame's worth; caller must own lock */ |
a54c979f SAS |
1301 | static int transfer(struct dummy_hcd *dum_hcd, struct urb *urb, |
1302 | struct dummy_ep *ep, int limit, int *status) | |
1da177e4 | 1303 | { |
a54c979f | 1304 | struct dummy *dum = dum_hcd->dum; |
1da177e4 LT |
1305 | struct dummy_request *req; |
1306 | ||
1307 | top: | |
1308 | /* if there's no request queued, the device is NAKing; return */ | |
18f2cbaa | 1309 | list_for_each_entry(req, &ep->queue, queue) { |
1da177e4 LT |
1310 | unsigned host_len, dev_len, len; |
1311 | int is_short, to_host; | |
1312 | int rescan = 0; | |
1313 | ||
a54c979f SAS |
1314 | if (dummy_ep_stream_en(dum_hcd, urb)) { |
1315 | if ((urb->stream_id != req->req.stream_id)) | |
1316 | continue; | |
1317 | } | |
1318 | ||
1da177e4 LT |
1319 | /* 1..N packets of ep->ep.maxpacket each ... the last one |
1320 | * may be short (including zero length). | |
1321 | * | |
1322 | * writer can send a zlp explicitly (length 0) or implicitly | |
1323 | * (length mod maxpacket zero, and 'zero' flag); they always | |
1324 | * terminate reads. | |
1325 | */ | |
1326 | host_len = urb->transfer_buffer_length - urb->actual_length; | |
1327 | dev_len = req->req.length - req->req.actual; | |
18f2cbaa | 1328 | len = min(host_len, dev_len); |
1da177e4 LT |
1329 | |
1330 | /* FIXME update emulated data toggle too */ | |
1331 | ||
18f2cbaa SAS |
1332 | to_host = usb_pipein(urb->pipe); |
1333 | if (unlikely(len == 0)) | |
1da177e4 LT |
1334 | is_short = 1; |
1335 | else { | |
1da177e4 LT |
1336 | /* not enough bandwidth left? */ |
1337 | if (limit < ep->ep.maxpacket && limit < len) | |
1338 | break; | |
18f2cbaa | 1339 | len = min_t(unsigned, len, limit); |
1da177e4 LT |
1340 | if (len == 0) |
1341 | break; | |
1342 | ||
1343 | /* use an extra pass for the final short packet */ | |
1344 | if (len > ep->ep.maxpacket) { | |
1345 | rescan = 1; | |
1346 | len -= (len % ep->ep.maxpacket); | |
1347 | } | |
1348 | is_short = (len % ep->ep.maxpacket) != 0; | |
1349 | ||
a04ce20d SAS |
1350 | len = dummy_perform_transfer(urb, req, len); |
1351 | ||
1da177e4 | 1352 | ep->last_io = jiffies; |
14fce33a SAS |
1353 | if (len < 0) { |
1354 | req->req.status = len; | |
1355 | } else { | |
1356 | limit -= len; | |
1357 | urb->actual_length += len; | |
1358 | req->req.actual += len; | |
1359 | } | |
1da177e4 LT |
1360 | } |
1361 | ||
1362 | /* short packets terminate, maybe with overflow/underflow. | |
1363 | * it's only really an error to write too much. | |
1364 | * | |
1365 | * partially filling a buffer optionally blocks queue advances | |
1366 | * (so completion handlers can clean up the queue) but we don't | |
b0d9efba | 1367 | * need to emulate such data-in-flight. |
1da177e4 LT |
1368 | */ |
1369 | if (is_short) { | |
1370 | if (host_len == dev_len) { | |
1371 | req->req.status = 0; | |
4d2f110c | 1372 | *status = 0; |
1da177e4 LT |
1373 | } else if (to_host) { |
1374 | req->req.status = 0; | |
1375 | if (dev_len > host_len) | |
4d2f110c | 1376 | *status = -EOVERFLOW; |
1da177e4 | 1377 | else |
4d2f110c | 1378 | *status = 0; |
1da177e4 | 1379 | } else if (!to_host) { |
4d2f110c | 1380 | *status = 0; |
1da177e4 LT |
1381 | if (host_len > dev_len) |
1382 | req->req.status = -EOVERFLOW; | |
1383 | else | |
1384 | req->req.status = 0; | |
1385 | } | |
1386 | ||
1387 | /* many requests terminate without a short packet */ | |
1388 | } else { | |
1389 | if (req->req.length == req->req.actual | |
1390 | && !req->req.zero) | |
1391 | req->req.status = 0; | |
1392 | if (urb->transfer_buffer_length == urb->actual_length | |
1393 | && !(urb->transfer_flags | |
4d2f110c AS |
1394 | & URB_ZERO_PACKET)) |
1395 | *status = 0; | |
1da177e4 LT |
1396 | } |
1397 | ||
1398 | /* device side completion --> continuable */ | |
1399 | if (req->req.status != -EINPROGRESS) { | |
18f2cbaa | 1400 | list_del_init(&req->queue); |
1da177e4 | 1401 | |
18f2cbaa SAS |
1402 | spin_unlock(&dum->lock); |
1403 | req->req.complete(&ep->ep, &req->req); | |
1404 | spin_lock(&dum->lock); | |
1da177e4 LT |
1405 | |
1406 | /* requests might have been unlinked... */ | |
1407 | rescan = 1; | |
1408 | } | |
1409 | ||
1410 | /* host side completion --> terminate */ | |
4d2f110c | 1411 | if (*status != -EINPROGRESS) |
1da177e4 LT |
1412 | break; |
1413 | ||
1414 | /* rescan to continue with any other queued i/o */ | |
1415 | if (rescan) | |
1416 | goto top; | |
1417 | } | |
1418 | return limit; | |
1419 | } | |
1420 | ||
18f2cbaa | 1421 | static int periodic_bytes(struct dummy *dum, struct dummy_ep *ep) |
1da177e4 LT |
1422 | { |
1423 | int limit = ep->ep.maxpacket; | |
1424 | ||
1425 | if (dum->gadget.speed == USB_SPEED_HIGH) { | |
1426 | int tmp; | |
1427 | ||
1428 | /* high bandwidth mode */ | |
29cc8897 | 1429 | tmp = usb_endpoint_maxp(ep->desc); |
1da177e4 LT |
1430 | tmp = (tmp >> 11) & 0x03; |
1431 | tmp *= 8 /* applies to entire frame */; | |
1432 | limit += limit * tmp; | |
1433 | } | |
1cd8fd28 | 1434 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
59f08e6d | 1435 | switch (usb_endpoint_type(ep->desc)) { |
1cd8fd28 TB |
1436 | case USB_ENDPOINT_XFER_ISOC: |
1437 | /* Sec. 4.4.8.2 USB3.0 Spec */ | |
1438 | limit = 3 * 16 * 1024 * 8; | |
1439 | break; | |
1440 | case USB_ENDPOINT_XFER_INT: | |
1441 | /* Sec. 4.4.7.2 USB3.0 Spec */ | |
1442 | limit = 3 * 1024 * 8; | |
1443 | break; | |
1444 | case USB_ENDPOINT_XFER_BULK: | |
1445 | default: | |
1446 | break; | |
1447 | } | |
1448 | } | |
1da177e4 LT |
1449 | return limit; |
1450 | } | |
1451 | ||
cdfcbd2c | 1452 | #define is_active(dum_hcd) ((dum_hcd->port_status & \ |
1da177e4 LT |
1453 | (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ |
1454 | USB_PORT_STAT_SUSPEND)) \ | |
1455 | == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) | |
1456 | ||
18f2cbaa | 1457 | static struct dummy_ep *find_endpoint(struct dummy *dum, u8 address) |
1da177e4 LT |
1458 | { |
1459 | int i; | |
1460 | ||
1cd8fd28 TB |
1461 | if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? |
1462 | dum->ss_hcd : dum->hs_hcd))) | |
1da177e4 LT |
1463 | return NULL; |
1464 | if ((address & ~USB_DIR_IN) == 0) | |
18f2cbaa | 1465 | return &dum->ep[0]; |
1da177e4 | 1466 | for (i = 1; i < DUMMY_ENDPOINTS; i++) { |
18f2cbaa | 1467 | struct dummy_ep *ep = &dum->ep[i]; |
1da177e4 LT |
1468 | |
1469 | if (!ep->desc) | |
1470 | continue; | |
1471 | if (ep->desc->bEndpointAddress == address) | |
1472 | return ep; | |
1473 | } | |
1474 | return NULL; | |
1475 | } | |
1476 | ||
1477 | #undef is_active | |
1478 | ||
1479 | #define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) | |
1480 | #define Dev_InRequest (Dev_Request | USB_DIR_IN) | |
1481 | #define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) | |
1482 | #define Intf_InRequest (Intf_Request | USB_DIR_IN) | |
1483 | #define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) | |
1484 | #define Ep_InRequest (Ep_Request | USB_DIR_IN) | |
1485 | ||
8be8a9d3 TB |
1486 | |
1487 | /** | |
1488 | * handle_control_request() - handles all control transfers | |
1489 | * @dum: pointer to dummy (the_controller) | |
1490 | * @urb: the urb request to handle | |
1491 | * @setup: pointer to the setup data for a USB device control | |
1492 | * request | |
1493 | * @status: pointer to request handling status | |
1494 | * | |
1495 | * Return 0 - if the request was handled | |
1496 | * 1 - if the request wasn't handles | |
1497 | * error code on error | |
1498 | */ | |
cdfcbd2c | 1499 | static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, |
8be8a9d3 TB |
1500 | struct usb_ctrlrequest *setup, |
1501 | int *status) | |
1502 | { | |
1503 | struct dummy_ep *ep2; | |
cdfcbd2c | 1504 | struct dummy *dum = dum_hcd->dum; |
8be8a9d3 TB |
1505 | int ret_val = 1; |
1506 | unsigned w_index; | |
1507 | unsigned w_value; | |
1508 | ||
1509 | w_index = le16_to_cpu(setup->wIndex); | |
1510 | w_value = le16_to_cpu(setup->wValue); | |
1511 | switch (setup->bRequest) { | |
1512 | case USB_REQ_SET_ADDRESS: | |
1513 | if (setup->bRequestType != Dev_Request) | |
1514 | break; | |
1515 | dum->address = w_value; | |
1516 | *status = 0; | |
1517 | dev_dbg(udc_dev(dum), "set_address = %d\n", | |
1518 | w_value); | |
1519 | ret_val = 0; | |
1520 | break; | |
1521 | case USB_REQ_SET_FEATURE: | |
1522 | if (setup->bRequestType == Dev_Request) { | |
1523 | ret_val = 0; | |
1524 | switch (w_value) { | |
1525 | case USB_DEVICE_REMOTE_WAKEUP: | |
1526 | break; | |
1527 | case USB_DEVICE_B_HNP_ENABLE: | |
1528 | dum->gadget.b_hnp_enable = 1; | |
1529 | break; | |
1530 | case USB_DEVICE_A_HNP_SUPPORT: | |
1531 | dum->gadget.a_hnp_support = 1; | |
1532 | break; | |
1533 | case USB_DEVICE_A_ALT_HNP_SUPPORT: | |
1534 | dum->gadget.a_alt_hnp_support = 1; | |
1535 | break; | |
1cd8fd28 TB |
1536 | case USB_DEVICE_U1_ENABLE: |
1537 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1538 | HCD_USB3) | |
1539 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1540 | else | |
1541 | ret_val = -EOPNOTSUPP; | |
1542 | break; | |
1543 | case USB_DEVICE_U2_ENABLE: | |
1544 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1545 | HCD_USB3) | |
1546 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1547 | else | |
1548 | ret_val = -EOPNOTSUPP; | |
1549 | break; | |
1550 | case USB_DEVICE_LTM_ENABLE: | |
1551 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1552 | HCD_USB3) | |
1553 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1554 | else | |
1555 | ret_val = -EOPNOTSUPP; | |
1556 | break; | |
8be8a9d3 TB |
1557 | default: |
1558 | ret_val = -EOPNOTSUPP; | |
1559 | } | |
1560 | if (ret_val == 0) { | |
1561 | dum->devstatus |= (1 << w_value); | |
1562 | *status = 0; | |
1563 | } | |
1564 | } else if (setup->bRequestType == Ep_Request) { | |
1565 | /* endpoint halt */ | |
1566 | ep2 = find_endpoint(dum, w_index); | |
1567 | if (!ep2 || ep2->ep.name == ep0name) { | |
1568 | ret_val = -EOPNOTSUPP; | |
1569 | break; | |
1570 | } | |
1571 | ep2->halted = 1; | |
1572 | ret_val = 0; | |
1573 | *status = 0; | |
1574 | } | |
1575 | break; | |
1576 | case USB_REQ_CLEAR_FEATURE: | |
1577 | if (setup->bRequestType == Dev_Request) { | |
1578 | ret_val = 0; | |
1579 | switch (w_value) { | |
1580 | case USB_DEVICE_REMOTE_WAKEUP: | |
1581 | w_value = USB_DEVICE_REMOTE_WAKEUP; | |
1582 | break; | |
1cd8fd28 TB |
1583 | case USB_DEVICE_U1_ENABLE: |
1584 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1585 | HCD_USB3) | |
1586 | w_value = USB_DEV_STAT_U1_ENABLED; | |
1587 | else | |
1588 | ret_val = -EOPNOTSUPP; | |
1589 | break; | |
1590 | case USB_DEVICE_U2_ENABLE: | |
1591 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1592 | HCD_USB3) | |
1593 | w_value = USB_DEV_STAT_U2_ENABLED; | |
1594 | else | |
1595 | ret_val = -EOPNOTSUPP; | |
1596 | break; | |
1597 | case USB_DEVICE_LTM_ENABLE: | |
1598 | if (dummy_hcd_to_hcd(dum_hcd)->speed == | |
1599 | HCD_USB3) | |
1600 | w_value = USB_DEV_STAT_LTM_ENABLED; | |
1601 | else | |
1602 | ret_val = -EOPNOTSUPP; | |
1603 | break; | |
8be8a9d3 TB |
1604 | default: |
1605 | ret_val = -EOPNOTSUPP; | |
1606 | break; | |
1607 | } | |
1608 | if (ret_val == 0) { | |
1609 | dum->devstatus &= ~(1 << w_value); | |
1610 | *status = 0; | |
1611 | } | |
1612 | } else if (setup->bRequestType == Ep_Request) { | |
1613 | /* endpoint halt */ | |
1614 | ep2 = find_endpoint(dum, w_index); | |
1615 | if (!ep2) { | |
1616 | ret_val = -EOPNOTSUPP; | |
1617 | break; | |
1618 | } | |
1619 | if (!ep2->wedged) | |
1620 | ep2->halted = 0; | |
1621 | ret_val = 0; | |
1622 | *status = 0; | |
1623 | } | |
1624 | break; | |
1625 | case USB_REQ_GET_STATUS: | |
1626 | if (setup->bRequestType == Dev_InRequest | |
1627 | || setup->bRequestType == Intf_InRequest | |
1628 | || setup->bRequestType == Ep_InRequest) { | |
1629 | char *buf; | |
1630 | /* | |
1631 | * device: remote wakeup, selfpowered | |
1632 | * interface: nothing | |
1633 | * endpoint: halt | |
1634 | */ | |
1635 | buf = (char *)urb->transfer_buffer; | |
1636 | if (urb->transfer_buffer_length > 0) { | |
1637 | if (setup->bRequestType == Ep_InRequest) { | |
1638 | ep2 = find_endpoint(dum, w_index); | |
1639 | if (!ep2) { | |
1640 | ret_val = -EOPNOTSUPP; | |
1641 | break; | |
1642 | } | |
1643 | buf[0] = ep2->halted; | |
1644 | } else if (setup->bRequestType == | |
1645 | Dev_InRequest) { | |
1646 | buf[0] = (u8)dum->devstatus; | |
1647 | } else | |
1648 | buf[0] = 0; | |
1649 | } | |
1650 | if (urb->transfer_buffer_length > 1) | |
1651 | buf[1] = 0; | |
1652 | urb->actual_length = min_t(u32, 2, | |
1653 | urb->transfer_buffer_length); | |
1654 | ret_val = 0; | |
1655 | *status = 0; | |
1656 | } | |
1657 | break; | |
1658 | } | |
1659 | return ret_val; | |
1660 | } | |
1661 | ||
1da177e4 LT |
1662 | /* drive both sides of the transfers; looks like irq handlers to |
1663 | * both drivers except the callbacks aren't in_irq(). | |
1664 | */ | |
cdfcbd2c | 1665 | static void dummy_timer(unsigned long _dum_hcd) |
1da177e4 | 1666 | { |
cdfcbd2c TB |
1667 | struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; |
1668 | struct dummy *dum = dum_hcd->dum; | |
1da177e4 LT |
1669 | struct urbp *urbp, *tmp; |
1670 | unsigned long flags; | |
1671 | int limit, total; | |
1672 | int i; | |
1673 | ||
1674 | /* simplistic model for one frame's bandwidth */ | |
1675 | switch (dum->gadget.speed) { | |
1676 | case USB_SPEED_LOW: | |
1677 | total = 8/*bytes*/ * 12/*packets*/; | |
1678 | break; | |
1679 | case USB_SPEED_FULL: | |
1680 | total = 64/*bytes*/ * 19/*packets*/; | |
1681 | break; | |
1682 | case USB_SPEED_HIGH: | |
1683 | total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; | |
1684 | break; | |
1cd8fd28 TB |
1685 | case USB_SPEED_SUPER: |
1686 | /* Bus speed is 500000 bytes/ms, so use a little less */ | |
1687 | total = 490000; | |
1688 | break; | |
1da177e4 | 1689 | default: |
cdfcbd2c | 1690 | dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); |
1da177e4 LT |
1691 | return; |
1692 | } | |
1693 | ||
1694 | /* FIXME if HZ != 1000 this will probably misbehave ... */ | |
1695 | ||
1696 | /* look at each urb queued by the host side driver */ | |
18f2cbaa | 1697 | spin_lock_irqsave(&dum->lock, flags); |
1da177e4 | 1698 | |
cdfcbd2c TB |
1699 | if (!dum_hcd->udev) { |
1700 | dev_err(dummy_dev(dum_hcd), | |
1da177e4 | 1701 | "timer fired with no URBs pending?\n"); |
18f2cbaa | 1702 | spin_unlock_irqrestore(&dum->lock, flags); |
1da177e4 LT |
1703 | return; |
1704 | } | |
1705 | ||
1706 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { | |
18f2cbaa | 1707 | if (!ep_name[i]) |
1da177e4 | 1708 | break; |
18f2cbaa | 1709 | dum->ep[i].already_seen = 0; |
1da177e4 LT |
1710 | } |
1711 | ||
1712 | restart: | |
cdfcbd2c | 1713 | list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { |
1da177e4 LT |
1714 | struct urb *urb; |
1715 | struct dummy_request *req; | |
1716 | u8 address; | |
1717 | struct dummy_ep *ep = NULL; | |
1718 | int type; | |
4d2f110c | 1719 | int status = -EINPROGRESS; |
1da177e4 LT |
1720 | |
1721 | urb = urbp->urb; | |
eb231054 | 1722 | if (urb->unlinked) |
1da177e4 | 1723 | goto return_urb; |
cdfcbd2c | 1724 | else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) |
391eca9d | 1725 | continue; |
18f2cbaa | 1726 | type = usb_pipetype(urb->pipe); |
1da177e4 LT |
1727 | |
1728 | /* used up this frame's non-periodic bandwidth? | |
1729 | * FIXME there's infinite bandwidth for control and | |
1730 | * periodic transfers ... unrealistic. | |
1731 | */ | |
1732 | if (total <= 0 && type == PIPE_BULK) | |
1733 | continue; | |
1734 | ||
1735 | /* find the gadget's ep for this request (if configured) */ | |
1736 | address = usb_pipeendpoint (urb->pipe); | |
18f2cbaa | 1737 | if (usb_pipein(urb->pipe)) |
1da177e4 LT |
1738 | address |= USB_DIR_IN; |
1739 | ep = find_endpoint(dum, address); | |
1740 | if (!ep) { | |
1741 | /* set_configuration() disagreement */ | |
cdfcbd2c | 1742 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
1743 | "no ep configured for urb %p\n", |
1744 | urb); | |
4d2f110c | 1745 | status = -EPROTO; |
1da177e4 LT |
1746 | goto return_urb; |
1747 | } | |
1748 | ||
1749 | if (ep->already_seen) | |
1750 | continue; | |
1751 | ep->already_seen = 1; | |
18f2cbaa | 1752 | if (ep == &dum->ep[0] && urb->error_count) { |
1da177e4 LT |
1753 | ep->setup_stage = 1; /* a new urb */ |
1754 | urb->error_count = 0; | |
1755 | } | |
1756 | if (ep->halted && !ep->setup_stage) { | |
1757 | /* NOTE: must not be iso! */ | |
cdfcbd2c | 1758 | dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", |
1da177e4 | 1759 | ep->ep.name, urb); |
4d2f110c | 1760 | status = -EPIPE; |
1da177e4 LT |
1761 | goto return_urb; |
1762 | } | |
1763 | /* FIXME make sure both ends agree on maxpacket */ | |
1764 | ||
1765 | /* handle control requests */ | |
18f2cbaa | 1766 | if (ep == &dum->ep[0] && ep->setup_stage) { |
1da177e4 LT |
1767 | struct usb_ctrlrequest setup; |
1768 | int value = 1; | |
1da177e4 | 1769 | |
18f2cbaa | 1770 | setup = *(struct usb_ctrlrequest *) urb->setup_packet; |
1da177e4 | 1771 | /* paranoia, in case of stale queued data */ |
18f2cbaa SAS |
1772 | list_for_each_entry(req, &ep->queue, queue) { |
1773 | list_del_init(&req->queue); | |
1da177e4 | 1774 | req->req.status = -EOVERFLOW; |
18f2cbaa | 1775 | dev_dbg(udc_dev(dum), "stale req = %p\n", |
1da177e4 LT |
1776 | req); |
1777 | ||
18f2cbaa SAS |
1778 | spin_unlock(&dum->lock); |
1779 | req->req.complete(&ep->ep, &req->req); | |
1780 | spin_lock(&dum->lock); | |
1da177e4 LT |
1781 | ep->already_seen = 0; |
1782 | goto restart; | |
1783 | } | |
1784 | ||
1785 | /* gadget driver never sees set_address or operations | |
1786 | * on standard feature flags. some hardware doesn't | |
1787 | * even expose them. | |
1788 | */ | |
1789 | ep->last_io = jiffies; | |
1790 | ep->setup_stage = 0; | |
1791 | ep->halted = 0; | |
1da177e4 | 1792 | |
cdfcbd2c | 1793 | value = handle_control_request(dum_hcd, urb, &setup, |
8be8a9d3 | 1794 | &status); |
1da177e4 LT |
1795 | |
1796 | /* gadget driver handles all other requests. block | |
1797 | * until setup() returns; no reentrancy issues etc. | |
1798 | */ | |
1799 | if (value > 0) { | |
18f2cbaa SAS |
1800 | spin_unlock(&dum->lock); |
1801 | value = dum->driver->setup(&dum->gadget, | |
1da177e4 | 1802 | &setup); |
18f2cbaa | 1803 | spin_lock(&dum->lock); |
1da177e4 LT |
1804 | |
1805 | if (value >= 0) { | |
1806 | /* no delays (max 64KB data stage) */ | |
1807 | limit = 64*1024; | |
1808 | goto treat_control_like_bulk; | |
1809 | } | |
1810 | /* error, see below */ | |
1811 | } | |
1812 | ||
1813 | if (value < 0) { | |
1814 | if (value != -EOPNOTSUPP) | |
18f2cbaa | 1815 | dev_dbg(udc_dev(dum), |
1da177e4 LT |
1816 | "setup --> %d\n", |
1817 | value); | |
4d2f110c | 1818 | status = -EPIPE; |
1da177e4 LT |
1819 | urb->actual_length = 0; |
1820 | } | |
1821 | ||
1822 | goto return_urb; | |
1823 | } | |
1824 | ||
1825 | /* non-control requests */ | |
1826 | limit = total; | |
18f2cbaa | 1827 | switch (usb_pipetype(urb->pipe)) { |
1da177e4 LT |
1828 | case PIPE_ISOCHRONOUS: |
1829 | /* FIXME is it urb->interval since the last xfer? | |
1830 | * use urb->iso_frame_desc[i]. | |
1831 | * complete whether or not ep has requests queued. | |
1832 | * report random errors, to debug drivers. | |
1833 | */ | |
18f2cbaa | 1834 | limit = max(limit, periodic_bytes(dum, ep)); |
4d2f110c | 1835 | status = -ENOSYS; |
1da177e4 LT |
1836 | break; |
1837 | ||
1838 | case PIPE_INTERRUPT: | |
1839 | /* FIXME is it urb->interval since the last xfer? | |
1840 | * this almost certainly polls too fast. | |
1841 | */ | |
18f2cbaa | 1842 | limit = max(limit, periodic_bytes(dum, ep)); |
1da177e4 LT |
1843 | /* FALLTHROUGH */ |
1844 | ||
1da177e4 | 1845 | default: |
18f2cbaa | 1846 | treat_control_like_bulk: |
1da177e4 | 1847 | ep->last_io = jiffies; |
a54c979f | 1848 | total = transfer(dum_hcd, urb, ep, limit, &status); |
1da177e4 LT |
1849 | break; |
1850 | } | |
1851 | ||
1852 | /* incomplete transfer? */ | |
4d2f110c | 1853 | if (status == -EINPROGRESS) |
1da177e4 LT |
1854 | continue; |
1855 | ||
1856 | return_urb: | |
18f2cbaa SAS |
1857 | list_del(&urbp->urbp_list); |
1858 | kfree(urbp); | |
1da177e4 LT |
1859 | if (ep) |
1860 | ep->already_seen = ep->setup_stage = 0; | |
1861 | ||
cdfcbd2c | 1862 | usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); |
18f2cbaa | 1863 | spin_unlock(&dum->lock); |
cdfcbd2c | 1864 | usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); |
18f2cbaa | 1865 | spin_lock(&dum->lock); |
1da177e4 LT |
1866 | |
1867 | goto restart; | |
1868 | } | |
1869 | ||
cdfcbd2c TB |
1870 | if (list_empty(&dum_hcd->urbp_list)) { |
1871 | usb_put_dev(dum_hcd->udev); | |
1872 | dum_hcd->udev = NULL; | |
1873 | } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
391eca9d | 1874 | /* want a 1 msec delay here */ |
cdfcbd2c | 1875 | mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); |
1da177e4 LT |
1876 | } |
1877 | ||
18f2cbaa | 1878 | spin_unlock_irqrestore(&dum->lock, flags); |
1da177e4 LT |
1879 | } |
1880 | ||
1881 | /*-------------------------------------------------------------------------*/ | |
1882 | ||
1883 | #define PORT_C_MASK \ | |
c2db8b5e AS |
1884 | ((USB_PORT_STAT_C_CONNECTION \ |
1885 | | USB_PORT_STAT_C_ENABLE \ | |
1886 | | USB_PORT_STAT_C_SUSPEND \ | |
1887 | | USB_PORT_STAT_C_OVERCURRENT \ | |
1888 | | USB_PORT_STAT_C_RESET) << 16) | |
1da177e4 | 1889 | |
18f2cbaa | 1890 | static int dummy_hub_status(struct usb_hcd *hcd, char *buf) |
1da177e4 | 1891 | { |
cdfcbd2c | 1892 | struct dummy_hcd *dum_hcd; |
1da177e4 | 1893 | unsigned long flags; |
391eca9d | 1894 | int retval = 0; |
1da177e4 | 1895 | |
cdfcbd2c | 1896 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 | 1897 | |
cdfcbd2c | 1898 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
541c7d43 | 1899 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d | 1900 | goto done; |
f1c39fad | 1901 | |
cdfcbd2c TB |
1902 | if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { |
1903 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
1904 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1905 | set_link_state(dum_hcd); | |
f1c39fad AS |
1906 | } |
1907 | ||
cdfcbd2c | 1908 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) { |
1da177e4 | 1909 | *buf = (1 << 1); |
cdfcbd2c TB |
1910 | dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", |
1911 | dum_hcd->port_status); | |
1da177e4 | 1912 | retval = 1; |
cdfcbd2c | 1913 | if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) |
18f2cbaa | 1914 | usb_hcd_resume_root_hub(hcd); |
1da177e4 | 1915 | } |
391eca9d | 1916 | done: |
cdfcbd2c | 1917 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
1918 | return retval; |
1919 | } | |
1920 | ||
1cd8fd28 TB |
1921 | static inline void |
1922 | ss_hub_descriptor(struct usb_hub_descriptor *desc) | |
1923 | { | |
1924 | memset(desc, 0, sizeof *desc); | |
1925 | desc->bDescriptorType = 0x2a; | |
1926 | desc->bDescLength = 12; | |
1927 | desc->wHubCharacteristics = cpu_to_le16(0x0001); | |
1928 | desc->bNbrPorts = 1; | |
1929 | desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ | |
1930 | desc->u.ss.DeviceRemovable = 0xffff; | |
1931 | } | |
1932 | ||
18f2cbaa | 1933 | static inline void hub_descriptor(struct usb_hub_descriptor *desc) |
1da177e4 | 1934 | { |
18f2cbaa | 1935 | memset(desc, 0, sizeof *desc); |
1da177e4 LT |
1936 | desc->bDescriptorType = 0x29; |
1937 | desc->bDescLength = 9; | |
fd05e720 | 1938 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
1da177e4 | 1939 | desc->bNbrPorts = 1; |
dbe79bbe JY |
1940 | desc->u.hs.DeviceRemovable[0] = 0xff; |
1941 | desc->u.hs.DeviceRemovable[1] = 0xff; | |
1da177e4 LT |
1942 | } |
1943 | ||
18f2cbaa | 1944 | static int dummy_hub_control( |
1da177e4 LT |
1945 | struct usb_hcd *hcd, |
1946 | u16 typeReq, | |
1947 | u16 wValue, | |
1948 | u16 wIndex, | |
1949 | char *buf, | |
1950 | u16 wLength | |
1951 | ) { | |
cdfcbd2c | 1952 | struct dummy_hcd *dum_hcd; |
1da177e4 LT |
1953 | int retval = 0; |
1954 | unsigned long flags; | |
1955 | ||
541c7d43 | 1956 | if (!HCD_HW_ACCESSIBLE(hcd)) |
391eca9d AS |
1957 | return -ETIMEDOUT; |
1958 | ||
cdfcbd2c TB |
1959 | dum_hcd = hcd_to_dummy_hcd(hcd); |
1960 | ||
1961 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
1da177e4 LT |
1962 | switch (typeReq) { |
1963 | case ClearHubFeature: | |
1964 | break; | |
1965 | case ClearPortFeature: | |
1966 | switch (wValue) { | |
1967 | case USB_PORT_FEAT_SUSPEND: | |
1cd8fd28 TB |
1968 | if (hcd->speed == HCD_USB3) { |
1969 | dev_dbg(dummy_dev(dum_hcd), | |
1970 | "USB_PORT_FEAT_SUSPEND req not " | |
1971 | "supported for USB 3.0 roothub\n"); | |
1972 | goto error; | |
1973 | } | |
cdfcbd2c | 1974 | if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { |
1da177e4 | 1975 | /* 20msec resume signaling */ |
cdfcbd2c TB |
1976 | dum_hcd->resuming = 1; |
1977 | dum_hcd->re_timeout = jiffies + | |
f1c39fad | 1978 | msecs_to_jiffies(20); |
1da177e4 LT |
1979 | } |
1980 | break; | |
1981 | case USB_PORT_FEAT_POWER: | |
1cd8fd28 TB |
1982 | if (hcd->speed == HCD_USB3) { |
1983 | if (dum_hcd->port_status & USB_PORT_STAT_POWER) | |
1984 | dev_dbg(dummy_dev(dum_hcd), | |
1985 | "power-off\n"); | |
1986 | } else | |
1987 | if (dum_hcd->port_status & | |
1988 | USB_SS_PORT_STAT_POWER) | |
1989 | dev_dbg(dummy_dev(dum_hcd), | |
1990 | "power-off\n"); | |
f1c39fad | 1991 | /* FALLS THROUGH */ |
1da177e4 | 1992 | default: |
cdfcbd2c TB |
1993 | dum_hcd->port_status &= ~(1 << wValue); |
1994 | set_link_state(dum_hcd); | |
1da177e4 LT |
1995 | } |
1996 | break; | |
1997 | case GetHubDescriptor: | |
1cd8fd28 TB |
1998 | if (hcd->speed == HCD_USB3 && |
1999 | (wLength < USB_DT_SS_HUB_SIZE || | |
2000 | wValue != (USB_DT_SS_HUB << 8))) { | |
2001 | dev_dbg(dummy_dev(dum_hcd), | |
2002 | "Wrong hub descriptor type for " | |
2003 | "USB 3.0 roothub.\n"); | |
2004 | goto error; | |
2005 | } | |
2006 | if (hcd->speed == HCD_USB3) | |
2007 | ss_hub_descriptor((struct usb_hub_descriptor *) buf); | |
2008 | else | |
2009 | hub_descriptor((struct usb_hub_descriptor *) buf); | |
1da177e4 LT |
2010 | break; |
2011 | case GetHubStatus: | |
18f2cbaa | 2012 | *(__le32 *) buf = cpu_to_le32(0); |
1da177e4 LT |
2013 | break; |
2014 | case GetPortStatus: | |
2015 | if (wIndex != 1) | |
2016 | retval = -EPIPE; | |
2017 | ||
2018 | /* whoever resets or resumes must GetPortStatus to | |
2019 | * complete it!! | |
2020 | */ | |
cdfcbd2c TB |
2021 | if (dum_hcd->resuming && |
2022 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
2023 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); | |
2024 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; | |
1da177e4 | 2025 | } |
cdfcbd2c TB |
2026 | if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && |
2027 | time_after_eq(jiffies, dum_hcd->re_timeout)) { | |
2028 | dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); | |
2029 | dum_hcd->port_status &= ~USB_PORT_STAT_RESET; | |
2030 | if (dum_hcd->dum->pullup) { | |
2031 | dum_hcd->port_status |= USB_PORT_STAT_ENABLE; | |
1cd8fd28 TB |
2032 | |
2033 | if (hcd->speed < HCD_USB3) { | |
2034 | switch (dum_hcd->dum->gadget.speed) { | |
2035 | case USB_SPEED_HIGH: | |
2036 | dum_hcd->port_status |= | |
2037 | USB_PORT_STAT_HIGH_SPEED; | |
2038 | break; | |
2039 | case USB_SPEED_LOW: | |
2040 | dum_hcd->dum->gadget.ep0-> | |
2041 | maxpacket = 8; | |
2042 | dum_hcd->port_status |= | |
2043 | USB_PORT_STAT_LOW_SPEED; | |
2044 | break; | |
2045 | default: | |
2046 | dum_hcd->dum->gadget.speed = | |
2047 | USB_SPEED_FULL; | |
2048 | break; | |
2049 | } | |
1da177e4 LT |
2050 | } |
2051 | } | |
2052 | } | |
cdfcbd2c | 2053 | set_link_state(dum_hcd); |
18f2cbaa SAS |
2054 | ((__le16 *) buf)[0] = cpu_to_le16(dum_hcd->port_status); |
2055 | ((__le16 *) buf)[1] = cpu_to_le16(dum_hcd->port_status >> 16); | |
1da177e4 LT |
2056 | break; |
2057 | case SetHubFeature: | |
2058 | retval = -EPIPE; | |
2059 | break; | |
2060 | case SetPortFeature: | |
2061 | switch (wValue) { | |
1cd8fd28 TB |
2062 | case USB_PORT_FEAT_LINK_STATE: |
2063 | if (hcd->speed != HCD_USB3) { | |
2064 | dev_dbg(dummy_dev(dum_hcd), | |
2065 | "USB_PORT_FEAT_LINK_STATE req not " | |
2066 | "supported for USB 2.0 roothub\n"); | |
2067 | goto error; | |
2068 | } | |
2069 | /* | |
2070 | * Since this is dummy we don't have an actual link so | |
2071 | * there is nothing to do for the SET_LINK_STATE cmd | |
2072 | */ | |
2073 | break; | |
2074 | case USB_PORT_FEAT_U1_TIMEOUT: | |
2075 | case USB_PORT_FEAT_U2_TIMEOUT: | |
2076 | /* TODO: add suspend/resume support! */ | |
2077 | if (hcd->speed != HCD_USB3) { | |
2078 | dev_dbg(dummy_dev(dum_hcd), | |
2079 | "USB_PORT_FEAT_U1/2_TIMEOUT req not " | |
2080 | "supported for USB 2.0 roothub\n"); | |
2081 | goto error; | |
2082 | } | |
2083 | break; | |
1da177e4 | 2084 | case USB_PORT_FEAT_SUSPEND: |
1cd8fd28 TB |
2085 | /* Applicable only for USB2.0 hub */ |
2086 | if (hcd->speed == HCD_USB3) { | |
2087 | dev_dbg(dummy_dev(dum_hcd), | |
2088 | "USB_PORT_FEAT_SUSPEND req not " | |
2089 | "supported for USB 3.0 roothub\n"); | |
2090 | goto error; | |
2091 | } | |
cdfcbd2c TB |
2092 | if (dum_hcd->active) { |
2093 | dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; | |
f1c39fad AS |
2094 | |
2095 | /* HNP would happen here; for now we | |
2096 | * assume b_bus_req is always true. | |
2097 | */ | |
cdfcbd2c | 2098 | set_link_state(dum_hcd); |
f1c39fad | 2099 | if (((1 << USB_DEVICE_B_HNP_ENABLE) |
cdfcbd2c TB |
2100 | & dum_hcd->dum->devstatus) != 0) |
2101 | dev_dbg(dummy_dev(dum_hcd), | |
5742b0c9 | 2102 | "no HNP yet!\n"); |
1da177e4 LT |
2103 | } |
2104 | break; | |
f1c39fad | 2105 | case USB_PORT_FEAT_POWER: |
1cd8fd28 TB |
2106 | if (hcd->speed == HCD_USB3) |
2107 | dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; | |
2108 | else | |
2109 | dum_hcd->port_status |= USB_PORT_STAT_POWER; | |
cdfcbd2c | 2110 | set_link_state(dum_hcd); |
f1c39fad | 2111 | break; |
1cd8fd28 TB |
2112 | case USB_PORT_FEAT_BH_PORT_RESET: |
2113 | /* Applicable only for USB3.0 hub */ | |
2114 | if (hcd->speed != HCD_USB3) { | |
2115 | dev_dbg(dummy_dev(dum_hcd), | |
2116 | "USB_PORT_FEAT_BH_PORT_RESET req not " | |
2117 | "supported for USB 2.0 roothub\n"); | |
2118 | goto error; | |
2119 | } | |
2120 | /* FALLS THROUGH */ | |
1da177e4 | 2121 | case USB_PORT_FEAT_RESET: |
f1c39fad | 2122 | /* if it's already enabled, disable */ |
1cd8fd28 TB |
2123 | if (hcd->speed == HCD_USB3) { |
2124 | dum_hcd->port_status = 0; | |
2125 | dum_hcd->port_status = | |
2126 | (USB_SS_PORT_STAT_POWER | | |
2127 | USB_PORT_STAT_CONNECTION | | |
2128 | USB_PORT_STAT_RESET); | |
2129 | } else | |
2130 | dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE | |
f1c39fad AS |
2131 | | USB_PORT_STAT_LOW_SPEED |
2132 | | USB_PORT_STAT_HIGH_SPEED); | |
cdfcbd2c TB |
2133 | /* |
2134 | * We want to reset device status. All but the | |
2135 | * Self powered feature | |
2136 | */ | |
2137 | dum_hcd->dum->devstatus &= | |
2138 | (1 << USB_DEVICE_SELF_POWERED); | |
1cd8fd28 TB |
2139 | /* |
2140 | * FIXME USB3.0: what is the correct reset signaling | |
2141 | * interval? Is it still 50msec as for HS? | |
2142 | */ | |
cdfcbd2c | 2143 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); |
f1c39fad | 2144 | /* FALLS THROUGH */ |
1da177e4 | 2145 | default: |
1cd8fd28 TB |
2146 | if (hcd->speed == HCD_USB3) { |
2147 | if ((dum_hcd->port_status & | |
2148 | USB_SS_PORT_STAT_POWER) != 0) { | |
2149 | dum_hcd->port_status |= (1 << wValue); | |
2150 | set_link_state(dum_hcd); | |
2151 | } | |
2152 | } else | |
2153 | if ((dum_hcd->port_status & | |
2154 | USB_PORT_STAT_POWER) != 0) { | |
2155 | dum_hcd->port_status |= (1 << wValue); | |
2156 | set_link_state(dum_hcd); | |
2157 | } | |
2158 | } | |
2159 | break; | |
2160 | case GetPortErrorCount: | |
2161 | if (hcd->speed != HCD_USB3) { | |
2162 | dev_dbg(dummy_dev(dum_hcd), | |
2163 | "GetPortErrorCount req not " | |
2164 | "supported for USB 2.0 roothub\n"); | |
2165 | goto error; | |
2166 | } | |
2167 | /* We'll always return 0 since this is a dummy hub */ | |
2168 | *(__le32 *) buf = cpu_to_le32(0); | |
2169 | break; | |
2170 | case SetHubDepth: | |
2171 | if (hcd->speed != HCD_USB3) { | |
2172 | dev_dbg(dummy_dev(dum_hcd), | |
2173 | "SetHubDepth req not supported for " | |
2174 | "USB 2.0 roothub\n"); | |
2175 | goto error; | |
1da177e4 LT |
2176 | } |
2177 | break; | |
1da177e4 | 2178 | default: |
cdfcbd2c | 2179 | dev_dbg(dummy_dev(dum_hcd), |
1da177e4 LT |
2180 | "hub control req%04x v%04x i%04x l%d\n", |
2181 | typeReq, wValue, wIndex, wLength); | |
1cd8fd28 | 2182 | error: |
1da177e4 LT |
2183 | /* "protocol stall" on error */ |
2184 | retval = -EPIPE; | |
2185 | } | |
cdfcbd2c | 2186 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
685eb93f | 2187 | |
cdfcbd2c | 2188 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) |
18f2cbaa | 2189 | usb_hcd_poll_rh_status(hcd); |
1da177e4 LT |
2190 | return retval; |
2191 | } | |
2192 | ||
18f2cbaa | 2193 | static int dummy_bus_suspend(struct usb_hcd *hcd) |
391eca9d | 2194 | { |
cdfcbd2c | 2195 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
391eca9d | 2196 | |
18f2cbaa | 2197 | dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); |
3cf0a22e | 2198 | |
cdfcbd2c TB |
2199 | spin_lock_irq(&dum_hcd->dum->lock); |
2200 | dum_hcd->rh_state = DUMMY_RH_SUSPENDED; | |
2201 | set_link_state(dum_hcd); | |
3cf0a22e | 2202 | hcd->state = HC_STATE_SUSPENDED; |
cdfcbd2c | 2203 | spin_unlock_irq(&dum_hcd->dum->lock); |
391eca9d AS |
2204 | return 0; |
2205 | } | |
2206 | ||
18f2cbaa | 2207 | static int dummy_bus_resume(struct usb_hcd *hcd) |
391eca9d | 2208 | { |
cdfcbd2c | 2209 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
3cf0a22e AS |
2210 | int rc = 0; |
2211 | ||
18f2cbaa | 2212 | dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); |
391eca9d | 2213 | |
cdfcbd2c | 2214 | spin_lock_irq(&dum_hcd->dum->lock); |
541c7d43 | 2215 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
cfa59dab | 2216 | rc = -ESHUTDOWN; |
3cf0a22e | 2217 | } else { |
cdfcbd2c TB |
2218 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
2219 | set_link_state(dum_hcd); | |
2220 | if (!list_empty(&dum_hcd->urbp_list)) | |
2221 | mod_timer(&dum_hcd->timer, jiffies); | |
3cf0a22e AS |
2222 | hcd->state = HC_STATE_RUNNING; |
2223 | } | |
cdfcbd2c | 2224 | spin_unlock_irq(&dum_hcd->dum->lock); |
3cf0a22e | 2225 | return rc; |
391eca9d | 2226 | } |
1da177e4 LT |
2227 | |
2228 | /*-------------------------------------------------------------------------*/ | |
2229 | ||
18f2cbaa | 2230 | static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb) |
1da177e4 | 2231 | { |
18f2cbaa | 2232 | int ep = usb_pipeendpoint(urb->pipe); |
1da177e4 | 2233 | |
18f2cbaa | 2234 | return snprintf(buf, size, |
1da177e4 LT |
2235 | "urb/%p %s ep%d%s%s len %d/%d\n", |
2236 | urb, | |
2237 | ({ char *s; | |
18f2cbaa SAS |
2238 | switch (urb->dev->speed) { |
2239 | case USB_SPEED_LOW: | |
7c884fe4 TB |
2240 | s = "ls"; |
2241 | break; | |
18f2cbaa | 2242 | case USB_SPEED_FULL: |
7c884fe4 TB |
2243 | s = "fs"; |
2244 | break; | |
18f2cbaa | 2245 | case USB_SPEED_HIGH: |
7c884fe4 TB |
2246 | s = "hs"; |
2247 | break; | |
18f2cbaa | 2248 | case USB_SPEED_SUPER: |
1cd8fd28 TB |
2249 | s = "ss"; |
2250 | break; | |
18f2cbaa | 2251 | default: |
7c884fe4 TB |
2252 | s = "?"; |
2253 | break; | |
1da177e4 | 2254 | }; s; }), |
18f2cbaa | 2255 | ep, ep ? (usb_pipein(urb->pipe) ? "in" : "out") : "", |
1da177e4 | 2256 | ({ char *s; \ |
18f2cbaa SAS |
2257 | switch (usb_pipetype(urb->pipe)) { \ |
2258 | case PIPE_CONTROL: \ | |
7c884fe4 TB |
2259 | s = ""; \ |
2260 | break; \ | |
18f2cbaa | 2261 | case PIPE_BULK: \ |
7c884fe4 TB |
2262 | s = "-bulk"; \ |
2263 | break; \ | |
18f2cbaa | 2264 | case PIPE_INTERRUPT: \ |
7c884fe4 TB |
2265 | s = "-int"; \ |
2266 | break; \ | |
18f2cbaa | 2267 | default: \ |
7c884fe4 TB |
2268 | s = "-iso"; \ |
2269 | break; \ | |
18f2cbaa | 2270 | }; s; }), |
1da177e4 LT |
2271 | urb->actual_length, urb->transfer_buffer_length); |
2272 | } | |
2273 | ||
18f2cbaa SAS |
2274 | static ssize_t show_urbs(struct device *dev, struct device_attribute *attr, |
2275 | char *buf) | |
1da177e4 | 2276 | { |
18f2cbaa | 2277 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
cdfcbd2c | 2278 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2279 | struct urbp *urbp; |
2280 | size_t size = 0; | |
2281 | unsigned long flags; | |
2282 | ||
cdfcbd2c TB |
2283 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
2284 | list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { | |
1da177e4 LT |
2285 | size_t temp; |
2286 | ||
18f2cbaa | 2287 | temp = show_urb(buf, PAGE_SIZE - size, urbp->urb); |
1da177e4 LT |
2288 | buf += temp; |
2289 | size += temp; | |
2290 | } | |
cdfcbd2c | 2291 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
1da177e4 LT |
2292 | |
2293 | return size; | |
2294 | } | |
18f2cbaa | 2295 | static DEVICE_ATTR(urbs, S_IRUGO, show_urbs, NULL); |
1da177e4 | 2296 | |
1cd8fd28 TB |
2297 | static int dummy_start_ss(struct dummy_hcd *dum_hcd) |
2298 | { | |
2299 | init_timer(&dum_hcd->timer); | |
2300 | dum_hcd->timer.function = dummy_timer; | |
2301 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2302 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
a54c979f | 2303 | dum_hcd->stream_en_ep = 0; |
1cd8fd28 TB |
2304 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
2305 | dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; | |
2306 | dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; | |
2307 | dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; | |
2308 | #ifdef CONFIG_USB_OTG | |
2309 | dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; | |
2310 | #endif | |
2311 | return 0; | |
2312 | ||
2313 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ | |
2314 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); | |
2315 | } | |
2316 | ||
cdfcbd2c | 2317 | static int dummy_start(struct usb_hcd *hcd) |
1da177e4 | 2318 | { |
cdfcbd2c | 2319 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
1da177e4 LT |
2320 | |
2321 | /* | |
2322 | * MASTER side init ... we emulate a root hub that'll only ever | |
2323 | * talk to one device (the slave side). Also appears in sysfs, | |
2324 | * just like more familiar pci-based HCDs. | |
2325 | */ | |
1cd8fd28 TB |
2326 | if (!usb_hcd_is_primary_hcd(hcd)) |
2327 | return dummy_start_ss(dum_hcd); | |
2328 | ||
cdfcbd2c TB |
2329 | spin_lock_init(&dum_hcd->dum->lock); |
2330 | init_timer(&dum_hcd->timer); | |
2331 | dum_hcd->timer.function = dummy_timer; | |
2332 | dum_hcd->timer.data = (unsigned long)dum_hcd; | |
2333 | dum_hcd->rh_state = DUMMY_RH_RUNNING; | |
1da177e4 | 2334 | |
cdfcbd2c | 2335 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
1da177e4 | 2336 | |
caf29f62 | 2337 | hcd->power_budget = POWER_BUDGET; |
1da177e4 | 2338 | hcd->state = HC_STATE_RUNNING; |
685eb93f | 2339 | hcd->uses_new_polling = 1; |
1da177e4 | 2340 | |
5742b0c9 AS |
2341 | #ifdef CONFIG_USB_OTG |
2342 | hcd->self.otg_port = 1; | |
2343 | #endif | |
2344 | ||
1da177e4 | 2345 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
cdfcbd2c | 2346 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
1da177e4 LT |
2347 | } |
2348 | ||
18f2cbaa | 2349 | static void dummy_stop(struct usb_hcd *hcd) |
1da177e4 LT |
2350 | { |
2351 | struct dummy *dum; | |
2352 | ||
18f2cbaa | 2353 | dum = hcd_to_dummy_hcd(hcd)->dum; |
cdfcbd2c TB |
2354 | device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); |
2355 | usb_gadget_unregister_driver(dum->driver); | |
2356 | dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); | |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | /*-------------------------------------------------------------------------*/ | |
2360 | ||
18f2cbaa | 2361 | static int dummy_h_get_frame(struct usb_hcd *hcd) |
1da177e4 | 2362 | { |
18f2cbaa | 2363 | return dummy_g_get_frame(NULL); |
1da177e4 LT |
2364 | } |
2365 | ||
cdfcbd2c TB |
2366 | static int dummy_setup(struct usb_hcd *hcd) |
2367 | { | |
14fce33a | 2368 | hcd->self.sg_tablesize = ~0; |
cdfcbd2c TB |
2369 | if (usb_hcd_is_primary_hcd(hcd)) { |
2370 | the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); | |
2371 | the_controller.hs_hcd->dum = &the_controller; | |
1cd8fd28 TB |
2372 | /* |
2373 | * Mark the first roothub as being USB 2.0. | |
2374 | * The USB 3.0 roothub will be registered later by | |
2375 | * dummy_hcd_probe() | |
2376 | */ | |
cdfcbd2c TB |
2377 | hcd->speed = HCD_USB2; |
2378 | hcd->self.root_hub->speed = USB_SPEED_HIGH; | |
1cd8fd28 TB |
2379 | } else { |
2380 | the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); | |
2381 | the_controller.ss_hcd->dum = &the_controller; | |
2382 | hcd->speed = HCD_USB3; | |
2383 | hcd->self.root_hub->speed = USB_SPEED_SUPER; | |
cdfcbd2c TB |
2384 | } |
2385 | return 0; | |
2386 | } | |
2387 | ||
1cd8fd28 | 2388 | /* Change a group of bulk endpoints to support multiple stream IDs */ |
d81f3e4f | 2389 | static int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, |
1cd8fd28 TB |
2390 | struct usb_host_endpoint **eps, unsigned int num_eps, |
2391 | unsigned int num_streams, gfp_t mem_flags) | |
2392 | { | |
a54c979f SAS |
2393 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
2394 | unsigned long flags; | |
2395 | int max_stream; | |
2396 | int ret_streams = num_streams; | |
2397 | unsigned int index; | |
2398 | unsigned int i; | |
2399 | ||
2400 | if (!num_eps) | |
2401 | return -EINVAL; | |
2402 | ||
2403 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
2404 | for (i = 0; i < num_eps; i++) { | |
2405 | index = dummy_get_ep_idx(&eps[i]->desc); | |
2406 | if ((1 << index) & dum_hcd->stream_en_ep) { | |
2407 | ret_streams = -EINVAL; | |
2408 | goto out; | |
2409 | } | |
2410 | max_stream = usb_ss_max_streams(&eps[i]->ss_ep_comp); | |
2411 | if (!max_stream) { | |
2412 | ret_streams = -EINVAL; | |
2413 | goto out; | |
2414 | } | |
2415 | if (max_stream < ret_streams) { | |
2416 | dev_dbg(dummy_dev(dum_hcd), "Ep 0x%x only supports %u " | |
2417 | "stream IDs.\n", | |
2418 | eps[i]->desc.bEndpointAddress, | |
2419 | max_stream); | |
2420 | ret_streams = max_stream; | |
2421 | } | |
2422 | } | |
2423 | ||
2424 | for (i = 0; i < num_eps; i++) { | |
2425 | index = dummy_get_ep_idx(&eps[i]->desc); | |
2426 | dum_hcd->stream_en_ep |= 1 << index; | |
2427 | set_max_streams_for_pipe(dum_hcd, | |
2428 | usb_endpoint_num(&eps[i]->desc), ret_streams); | |
2429 | } | |
2430 | out: | |
2431 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); | |
2432 | return ret_streams; | |
1cd8fd28 TB |
2433 | } |
2434 | ||
2435 | /* Reverts a group of bulk endpoints back to not using stream IDs. */ | |
d81f3e4f | 2436 | static int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, |
1cd8fd28 TB |
2437 | struct usb_host_endpoint **eps, unsigned int num_eps, |
2438 | gfp_t mem_flags) | |
2439 | { | |
a54c979f SAS |
2440 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
2441 | unsigned long flags; | |
2442 | int ret; | |
2443 | unsigned int index; | |
2444 | unsigned int i; | |
2445 | ||
2446 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); | |
2447 | for (i = 0; i < num_eps; i++) { | |
2448 | index = dummy_get_ep_idx(&eps[i]->desc); | |
2449 | if (!((1 << index) & dum_hcd->stream_en_ep)) { | |
2450 | ret = -EINVAL; | |
2451 | goto out; | |
2452 | } | |
2453 | } | |
2454 | ||
2455 | for (i = 0; i < num_eps; i++) { | |
2456 | index = dummy_get_ep_idx(&eps[i]->desc); | |
2457 | dum_hcd->stream_en_ep &= ~(1 << index); | |
2458 | set_max_streams_for_pipe(dum_hcd, | |
2459 | usb_endpoint_num(&eps[i]->desc), 0); | |
2460 | } | |
2461 | ret = 0; | |
2462 | out: | |
2463 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); | |
2464 | return ret; | |
1cd8fd28 TB |
2465 | } |
2466 | ||
2467 | static struct hc_driver dummy_hcd = { | |
1da177e4 LT |
2468 | .description = (char *) driver_name, |
2469 | .product_desc = "Dummy host controller", | |
cdfcbd2c | 2470 | .hcd_priv_size = sizeof(struct dummy_hcd), |
1da177e4 | 2471 | |
1cd8fd28 | 2472 | .flags = HCD_USB3 | HCD_SHARED, |
1da177e4 | 2473 | |
cdfcbd2c | 2474 | .reset = dummy_setup, |
1da177e4 LT |
2475 | .start = dummy_start, |
2476 | .stop = dummy_stop, | |
2477 | ||
18f2cbaa SAS |
2478 | .urb_enqueue = dummy_urb_enqueue, |
2479 | .urb_dequeue = dummy_urb_dequeue, | |
1da177e4 | 2480 | |
18f2cbaa | 2481 | .get_frame_number = dummy_h_get_frame, |
1da177e4 | 2482 | |
18f2cbaa SAS |
2483 | .hub_status_data = dummy_hub_status, |
2484 | .hub_control = dummy_hub_control, | |
0c0382e3 AS |
2485 | .bus_suspend = dummy_bus_suspend, |
2486 | .bus_resume = dummy_bus_resume, | |
1cd8fd28 TB |
2487 | |
2488 | .alloc_streams = dummy_alloc_streams, | |
2489 | .free_streams = dummy_free_streams, | |
1da177e4 LT |
2490 | }; |
2491 | ||
8364d6b0 | 2492 | static int dummy_hcd_probe(struct platform_device *pdev) |
1da177e4 | 2493 | { |
cdfcbd2c | 2494 | struct usb_hcd *hs_hcd; |
1cd8fd28 | 2495 | struct usb_hcd *ss_hcd; |
1da177e4 LT |
2496 | int retval; |
2497 | ||
8364d6b0 | 2498 | dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); |
1da177e4 | 2499 | |
1cd8fd28 TB |
2500 | if (!mod_data.is_super_speed) |
2501 | dummy_hcd.flags = HCD_USB2; | |
cdfcbd2c TB |
2502 | hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); |
2503 | if (!hs_hcd) | |
1da177e4 | 2504 | return -ENOMEM; |
cdfcbd2c | 2505 | hs_hcd->has_tt = 1; |
1da177e4 | 2506 | |
cdfcbd2c | 2507 | retval = usb_add_hcd(hs_hcd, 0, 0); |
1da177e4 | 2508 | if (retval != 0) { |
cdfcbd2c | 2509 | usb_put_hcd(hs_hcd); |
1cd8fd28 | 2510 | return retval; |
1da177e4 | 2511 | } |
1cd8fd28 TB |
2512 | |
2513 | if (mod_data.is_super_speed) { | |
2514 | ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, | |
2515 | dev_name(&pdev->dev), hs_hcd); | |
2516 | if (!ss_hcd) { | |
2517 | retval = -ENOMEM; | |
2518 | goto dealloc_usb2_hcd; | |
2519 | } | |
2520 | ||
2521 | retval = usb_add_hcd(ss_hcd, 0, 0); | |
2522 | if (retval) | |
2523 | goto put_usb3_hcd; | |
2524 | } | |
2525 | return 0; | |
2526 | ||
2527 | put_usb3_hcd: | |
2528 | usb_put_hcd(ss_hcd); | |
2529 | dealloc_usb2_hcd: | |
2530 | usb_put_hcd(hs_hcd); | |
2531 | the_controller.hs_hcd = the_controller.ss_hcd = NULL; | |
1da177e4 LT |
2532 | return retval; |
2533 | } | |
2534 | ||
cdfcbd2c | 2535 | static int dummy_hcd_remove(struct platform_device *pdev) |
1da177e4 | 2536 | { |
cdfcbd2c TB |
2537 | struct dummy *dum; |
2538 | ||
18f2cbaa | 2539 | dum = hcd_to_dummy_hcd(platform_get_drvdata(pdev))->dum; |
1cd8fd28 TB |
2540 | |
2541 | if (dum->ss_hcd) { | |
2542 | usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2543 | usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); | |
2544 | } | |
2545 | ||
cdfcbd2c TB |
2546 | usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
2547 | usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); | |
1cd8fd28 | 2548 | |
cdfcbd2c | 2549 | the_controller.hs_hcd = NULL; |
1cd8fd28 | 2550 | the_controller.ss_hcd = NULL; |
1da177e4 | 2551 | |
d9b76251 | 2552 | return 0; |
1da177e4 LT |
2553 | } |
2554 | ||
18f2cbaa | 2555 | static int dummy_hcd_suspend(struct platform_device *pdev, pm_message_t state) |
391eca9d AS |
2556 | { |
2557 | struct usb_hcd *hcd; | |
cdfcbd2c | 2558 | struct dummy_hcd *dum_hcd; |
3cf0a22e | 2559 | int rc = 0; |
391eca9d | 2560 | |
18f2cbaa | 2561 | dev_dbg(&pdev->dev, "%s\n", __func__); |
391eca9d | 2562 | |
18f2cbaa | 2563 | hcd = platform_get_drvdata(pdev); |
cdfcbd2c TB |
2564 | dum_hcd = hcd_to_dummy_hcd(hcd); |
2565 | if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { | |
3cf0a22e AS |
2566 | dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); |
2567 | rc = -EBUSY; | |
2568 | } else | |
2569 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
2570 | return rc; | |
391eca9d AS |
2571 | } |
2572 | ||
18f2cbaa | 2573 | static int dummy_hcd_resume(struct platform_device *pdev) |
391eca9d AS |
2574 | { |
2575 | struct usb_hcd *hcd; | |
2576 | ||
18f2cbaa | 2577 | dev_dbg(&pdev->dev, "%s\n", __func__); |
391eca9d | 2578 | |
18f2cbaa | 2579 | hcd = platform_get_drvdata(pdev); |
3cf0a22e | 2580 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
18f2cbaa | 2581 | usb_hcd_poll_rh_status(hcd); |
391eca9d AS |
2582 | return 0; |
2583 | } | |
2584 | ||
3ae5eaec | 2585 | static struct platform_driver dummy_hcd_driver = { |
d9b76251 AS |
2586 | .probe = dummy_hcd_probe, |
2587 | .remove = dummy_hcd_remove, | |
391eca9d AS |
2588 | .suspend = dummy_hcd_suspend, |
2589 | .resume = dummy_hcd_resume, | |
3ae5eaec RK |
2590 | .driver = { |
2591 | .name = (char *) driver_name, | |
2592 | .owner = THIS_MODULE, | |
2593 | }, | |
d9b76251 | 2594 | }; |
1da177e4 | 2595 | |
d9b76251 | 2596 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 2597 | |
a89a2cd3 AS |
2598 | static struct platform_device *the_udc_pdev; |
2599 | static struct platform_device *the_hcd_pdev; | |
1da177e4 | 2600 | |
18f2cbaa | 2601 | static int __init init(void) |
1da177e4 | 2602 | { |
a89a2cd3 | 2603 | int retval = -ENOMEM; |
1da177e4 | 2604 | |
18f2cbaa | 2605 | if (usb_disabled()) |
1da177e4 | 2606 | return -ENODEV; |
d9b76251 | 2607 | |
7eca4c5a TB |
2608 | if (!mod_data.is_high_speed && mod_data.is_super_speed) |
2609 | return -EINVAL; | |
2610 | ||
a89a2cd3 AS |
2611 | the_hcd_pdev = platform_device_alloc(driver_name, -1); |
2612 | if (!the_hcd_pdev) | |
1da177e4 | 2613 | return retval; |
a89a2cd3 AS |
2614 | the_udc_pdev = platform_device_alloc(gadget_name, -1); |
2615 | if (!the_udc_pdev) | |
2616 | goto err_alloc_udc; | |
d9b76251 | 2617 | |
a89a2cd3 AS |
2618 | retval = platform_driver_register(&dummy_hcd_driver); |
2619 | if (retval < 0) | |
2620 | goto err_register_hcd_driver; | |
2621 | retval = platform_driver_register(&dummy_udc_driver); | |
d9b76251 AS |
2622 | if (retval < 0) |
2623 | goto err_register_udc_driver; | |
2624 | ||
a89a2cd3 | 2625 | retval = platform_device_add(the_hcd_pdev); |
d9b76251 | 2626 | if (retval < 0) |
a89a2cd3 | 2627 | goto err_add_hcd; |
1cd8fd28 TB |
2628 | if (!the_controller.hs_hcd || |
2629 | (!the_controller.ss_hcd && mod_data.is_super_speed)) { | |
865835fa SAS |
2630 | /* |
2631 | * The hcd was added successfully but its probe function failed | |
2632 | * for some reason. | |
2633 | */ | |
2634 | retval = -EINVAL; | |
2635 | goto err_add_udc; | |
2636 | } | |
a89a2cd3 | 2637 | retval = platform_device_add(the_udc_pdev); |
d9b76251 | 2638 | if (retval < 0) |
a89a2cd3 | 2639 | goto err_add_udc; |
865835fa SAS |
2640 | if (!platform_get_drvdata(the_udc_pdev)) { |
2641 | /* | |
2642 | * The udc was added successfully but its probe function failed | |
2643 | * for some reason. | |
2644 | */ | |
2645 | retval = -EINVAL; | |
2646 | goto err_probe_udc; | |
2647 | } | |
d9b76251 AS |
2648 | return retval; |
2649 | ||
865835fa SAS |
2650 | err_probe_udc: |
2651 | platform_device_del(the_udc_pdev); | |
a89a2cd3 AS |
2652 | err_add_udc: |
2653 | platform_device_del(the_hcd_pdev); | |
2654 | err_add_hcd: | |
2655 | platform_driver_unregister(&dummy_udc_driver); | |
d9b76251 | 2656 | err_register_udc_driver: |
a89a2cd3 AS |
2657 | platform_driver_unregister(&dummy_hcd_driver); |
2658 | err_register_hcd_driver: | |
2659 | platform_device_put(the_udc_pdev); | |
2660 | err_alloc_udc: | |
2661 | platform_device_put(the_hcd_pdev); | |
1da177e4 LT |
2662 | return retval; |
2663 | } | |
18f2cbaa | 2664 | module_init(init); |
1da177e4 | 2665 | |
18f2cbaa | 2666 | static void __exit cleanup(void) |
1da177e4 | 2667 | { |
a89a2cd3 AS |
2668 | platform_device_unregister(the_udc_pdev); |
2669 | platform_device_unregister(the_hcd_pdev); | |
2670 | platform_driver_unregister(&dummy_udc_driver); | |
2671 | platform_driver_unregister(&dummy_hcd_driver); | |
1da177e4 | 2672 | } |
18f2cbaa | 2673 | module_exit(cleanup); |