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  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/u-boot/drivers/usb/gadget/ep0.c
 
1
/*
 
2
 * (C) Copyright 2003
 
3
 * Gerry Hamel, geh@ti.com, Texas Instruments
 
4
 *
 
5
 * (C) Copyright 2006
 
6
 * Bryan O'Donoghue, deckard@CodeHermit.ie
 
7
 *
 
8
 * Based on
 
9
 * linux/drivers/usbd/ep0.c
 
10
 *
 
11
 * Copyright (c) 2000, 2001, 2002 Lineo
 
12
 * Copyright (c) 2001 Hewlett Packard
 
13
 *
 
14
 * By:
 
15
 *      Stuart Lynne <sl@lineo.com>,
 
16
 *      Tom Rushworth <tbr@lineo.com>,
 
17
 *      Bruce Balden <balden@lineo.com>
 
18
 *
 
19
 * SPDX-License-Identifier:     GPL-2.0+
 
20
 */
 
21
 
 
22
/*
 
23
 * This is the builtin ep0 control function. It implements all required functionality
 
24
 * for responding to control requests (SETUP packets).
 
25
 *
 
26
 * XXX
 
27
 *
 
28
 * Currently we do not pass any SETUP packets (or other) to the configured
 
29
 * function driver. This may need to change.
 
30
 *
 
31
 * XXX
 
32
 *
 
33
 * As alluded to above, a simple callback cdc_recv_setup has been implemented
 
34
 * in the usb_device data structure to facilicate passing
 
35
 * Common Device Class packets to a function driver.
 
36
 *
 
37
 * XXX
 
38
 */
 
39
 
 
40
#include <common.h>
 
41
#include <usbdevice.h>
 
42
 
 
43
#if 0
 
44
#define dbg_ep0(lvl,fmt,args...) serial_printf("[%s] %s:%d: "fmt"\n",__FILE__,__FUNCTION__,__LINE__,##args)
 
45
#else
 
46
#define dbg_ep0(lvl,fmt,args...)
 
47
#endif
 
48
 
 
49
/* EP0 Configuration Set ********************************************************************* */
 
50
 
 
51
 
 
52
/**
 
53
 * ep0_get_status - fill in URB data with appropriate status
 
54
 * @device:
 
55
 * @urb:
 
56
 * @index:
 
57
 * @requesttype:
 
58
 *
 
59
 */
 
60
static int ep0_get_status (struct usb_device_instance *device,
 
61
                           struct urb *urb, int index, int requesttype)
 
62
{
 
63
        char *cp;
 
64
 
 
65
        urb->actual_length = 2;
 
66
        cp = (char*)urb->buffer;
 
67
        cp[0] = cp[1] = 0;
 
68
 
 
69
        switch (requesttype) {
 
70
        case USB_REQ_RECIPIENT_DEVICE:
 
71
                cp[0] = USB_STATUS_SELFPOWERED;
 
72
                break;
 
73
        case USB_REQ_RECIPIENT_INTERFACE:
 
74
                break;
 
75
        case USB_REQ_RECIPIENT_ENDPOINT:
 
76
                cp[0] = usbd_endpoint_halted (device, index);
 
77
                break;
 
78
        case USB_REQ_RECIPIENT_OTHER:
 
79
                urb->actual_length = 0;
 
80
        default:
 
81
                break;
 
82
        }
 
83
        dbg_ep0 (2, "%02x %02x", cp[0], cp[1]);
 
84
        return 0;
 
85
}
 
86
 
 
87
/**
 
88
 * ep0_get_one
 
89
 * @device:
 
90
 * @urb:
 
91
 * @result:
 
92
 *
 
93
 * Set a single byte value in the urb send buffer. Return non-zero to signal
 
94
 * a request error.
 
95
 */
 
96
static int ep0_get_one (struct usb_device_instance *device, struct urb *urb,
 
97
                        __u8 result)
 
98
{
 
99
        urb->actual_length = 1; /* XXX 2? */
 
100
        ((char *) urb->buffer)[0] = result;
 
101
        return 0;
 
102
}
 
103
 
 
104
/**
 
105
 * copy_config
 
106
 * @urb: pointer to urb
 
107
 * @data: pointer to configuration data
 
108
 * @length: length of data
 
109
 *
 
110
 * Copy configuration data to urb transfer buffer if there is room for it.
 
111
 */
 
112
void copy_config (struct urb *urb, void *data, int max_length,
 
113
                         int max_buf)
 
114
{
 
115
        int available;
 
116
        int length;
 
117
 
 
118
        /*dbg_ep0(3, "-> actual: %d buf: %d max_buf: %d max_length: %d data: %p", */
 
119
        /*        urb->actual_length, urb->buffer_length, max_buf, max_length, data); */
 
120
 
 
121
        if (!data) {
 
122
                dbg_ep0 (1, "data is NULL");
 
123
                return;
 
124
        }
 
125
        length = max_length;
 
126
 
 
127
        if (length > max_length) {
 
128
                dbg_ep0 (1, "length: %d >= max_length: %d", length,
 
129
                         max_length);
 
130
                return;
 
131
        }
 
132
        /*dbg_ep0(1, "   actual: %d buf: %d max_buf: %d max_length: %d length: %d", */
 
133
        /*        urb->actual_length, urb->buffer_length, max_buf, max_length, length); */
 
134
 
 
135
        if ((available =
 
136
             /*urb->buffer_length */ max_buf - urb->actual_length) <= 0) {
 
137
                return;
 
138
        }
 
139
        /*dbg_ep0(1, "actual: %d buf: %d max_buf: %d length: %d available: %d", */
 
140
        /*        urb->actual_length, urb->buffer_length, max_buf, length, available); */
 
141
 
 
142
        if (length > available) {
 
143
                length = available;
 
144
        }
 
145
        /*dbg_ep0(1, "actual: %d buf: %d max_buf: %d length: %d available: %d", */
 
146
        /*        urb->actual_length, urb->buffer_length, max_buf, length, available); */
 
147
 
 
148
        memcpy (urb->buffer + urb->actual_length, data, length);
 
149
        urb->actual_length += length;
 
150
 
 
151
        dbg_ep0 (3,
 
152
                 "copy_config: <- actual: %d buf: %d max_buf: %d max_length: %d available: %d",
 
153
                 urb->actual_length, urb->buffer_length, max_buf, max_length,
 
154
                 available);
 
155
}
 
156
 
 
157
/**
 
158
 * ep0_get_descriptor
 
159
 * @device:
 
160
 * @urb:
 
161
 * @max:
 
162
 * @descriptor_type:
 
163
 * @index:
 
164
 *
 
165
 * Called by ep0_rx_process for a get descriptor device command. Determine what
 
166
 * descriptor is being requested, copy to send buffer. Return zero if ok to send,
 
167
 * return non-zero to signal a request error.
 
168
 */
 
169
static int ep0_get_descriptor (struct usb_device_instance *device,
 
170
                               struct urb *urb, int max, int descriptor_type,
 
171
                               int index)
 
172
{
 
173
        int port = 0;           /* XXX compound device */
 
174
 
 
175
        /*dbg_ep0(3, "max: %x type: %x index: %x", max, descriptor_type, index); */
 
176
 
 
177
        if (!urb || !urb->buffer || !urb->buffer_length
 
178
            || (urb->buffer_length < 255)) {
 
179
                dbg_ep0 (2, "invalid urb %p", urb);
 
180
                return -1L;
 
181
        }
 
182
 
 
183
        /* setup tx urb */
 
184
        urb->actual_length = 0;
 
185
 
 
186
        dbg_ep0 (2, "%s", USBD_DEVICE_DESCRIPTORS (descriptor_type));
 
187
 
 
188
        switch (descriptor_type) {
 
189
        case USB_DESCRIPTOR_TYPE_DEVICE:
 
190
                {
 
191
                        struct usb_device_descriptor *device_descriptor;
 
192
                        if (!
 
193
                            (device_descriptor =
 
194
                             usbd_device_device_descriptor (device, port))) {
 
195
                                return -1;
 
196
                        }
 
197
                        /* copy descriptor for this device */
 
198
                        copy_config (urb, device_descriptor,
 
199
                                     sizeof (struct usb_device_descriptor),
 
200
                                     max);
 
201
 
 
202
                        /* correct the correct control endpoint 0 max packet size into the descriptor */
 
203
                        device_descriptor =
 
204
                                (struct usb_device_descriptor *) urb->buffer;
 
205
 
 
206
                }
 
207
                dbg_ep0(3, "copied device configuration, actual_length: 0x%x", urb->actual_length);
 
208
                break;
 
209
 
 
210
        case USB_DESCRIPTOR_TYPE_CONFIGURATION:
 
211
                {
 
212
                        struct usb_configuration_descriptor
 
213
                                *configuration_descriptor;
 
214
                        struct usb_device_descriptor *device_descriptor;
 
215
                        if (!
 
216
                            (device_descriptor =
 
217
                             usbd_device_device_descriptor (device, port))) {
 
218
                                return -1;
 
219
                        }
 
220
                        /*dbg_ep0(2, "%d %d", index, device_descriptor->bNumConfigurations); */
 
221
                        if (index >= device_descriptor->bNumConfigurations) {
 
222
                                dbg_ep0 (0, "index too large: %d >= %d", index,
 
223
                                         device_descriptor->
 
224
                                         bNumConfigurations);
 
225
                                return -1;
 
226
                        }
 
227
 
 
228
                        if (!
 
229
                            (configuration_descriptor =
 
230
                             usbd_device_configuration_descriptor (device,
 
231
                                                                   port,
 
232
                                                                   index))) {
 
233
                                dbg_ep0 (0,
 
234
                                         "usbd_device_configuration_descriptor failed: %d",
 
235
                                         index);
 
236
                                return -1;
 
237
                        }
 
238
                        dbg_ep0(0, "attempt to copy %d bytes to urb\n",cpu_to_le16(configuration_descriptor->wTotalLength));
 
239
                        copy_config (urb, configuration_descriptor,
 
240
 
 
241
                                        cpu_to_le16(configuration_descriptor->wTotalLength),
 
242
                                     max);
 
243
                }
 
244
 
 
245
                break;
 
246
 
 
247
        case USB_DESCRIPTOR_TYPE_STRING:
 
248
                {
 
249
                        struct usb_string_descriptor *string_descriptor;
 
250
                        if (!(string_descriptor = usbd_get_string (index))) {
 
251
                                serial_printf("Invalid string index %d\n", index);
 
252
                                return -1;
 
253
                        }
 
254
                        dbg_ep0(3, "string_descriptor: %p length %d", string_descriptor, string_descriptor->bLength);
 
255
                        copy_config (urb, string_descriptor, string_descriptor->bLength, max);
 
256
                }
 
257
                break;
 
258
        case USB_DESCRIPTOR_TYPE_INTERFACE:
 
259
        serial_printf("USB_DESCRIPTOR_TYPE_INTERFACE - error not implemented\n");
 
260
                return -1;
 
261
        case USB_DESCRIPTOR_TYPE_ENDPOINT:
 
262
                serial_printf("USB_DESCRIPTOR_TYPE_ENDPOINT - error not implemented\n");
 
263
                return -1;
 
264
        case USB_DESCRIPTOR_TYPE_HID:
 
265
                {
 
266
                        serial_printf("USB_DESCRIPTOR_TYPE_HID - error not implemented\n");
 
267
                        return -1;      /* unsupported at this time */
 
268
#if 0
 
269
                        int bNumInterface =
 
270
                                le16_to_cpu (urb->device_request.wIndex);
 
271
                        int bAlternateSetting = 0;
 
272
                        int class = 0;
 
273
                        struct usb_class_descriptor *class_descriptor;
 
274
 
 
275
                        if (!(class_descriptor =
 
276
                              usbd_device_class_descriptor_index (device,
 
277
                                                                  port, 0,
 
278
                                                                  bNumInterface,
 
279
                                                                  bAlternateSetting,
 
280
                                                                  class))
 
281
                            || class_descriptor->descriptor.hid.bDescriptorType != USB_DT_HID) {
 
282
                                dbg_ep0 (3, "[%d] interface is not HID",
 
283
                                         bNumInterface);
 
284
                                return -1;
 
285
                        }
 
286
                        /* copy descriptor for this class */
 
287
                        copy_config (urb, class_descriptor,
 
288
                                     class_descriptor->descriptor.hid.bLength,
 
289
                                     max);
 
290
#endif
 
291
                }
 
292
                break;
 
293
        case USB_DESCRIPTOR_TYPE_REPORT:
 
294
                {
 
295
                        serial_printf("USB_DESCRIPTOR_TYPE_REPORT - error not implemented\n");
 
296
                        return -1;      /* unsupported at this time */
 
297
#if 0
 
298
                        int bNumInterface =
 
299
                                le16_to_cpu (urb->device_request.wIndex);
 
300
                        int bAlternateSetting = 0;
 
301
                        int class = 0;
 
302
                        struct usb_class_report_descriptor *report_descriptor;
 
303
 
 
304
                        if (!(report_descriptor =
 
305
                              usbd_device_class_report_descriptor_index
 
306
                              (device, port, 0, bNumInterface,
 
307
                               bAlternateSetting, class))
 
308
                            || report_descriptor->bDescriptorType !=
 
309
                            USB_DT_REPORT) {
 
310
                                dbg_ep0 (3, "[%d] descriptor is not REPORT",
 
311
                                         bNumInterface);
 
312
                                return -1;
 
313
                        }
 
314
                        /* copy report descriptor for this class */
 
315
                        /*copy_config(urb, &report_descriptor->bData[0], report_descriptor->wLength, max); */
 
316
                        if (max - urb->actual_length > 0) {
 
317
                                int length =
 
318
                                        MIN (report_descriptor->wLength,
 
319
                                             max - urb->actual_length);
 
320
                                memcpy (urb->buffer + urb->actual_length,
 
321
                                        &report_descriptor->bData[0], length);
 
322
                                urb->actual_length += length;
 
323
                        }
 
324
#endif
 
325
                }
 
326
                break;
 
327
        case USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER:
 
328
#if defined(CONFIG_USBD_HS)
 
329
                {
 
330
                        struct usb_qualifier_descriptor *qualifier_descriptor =
 
331
                                device->qualifier_descriptor;
 
332
 
 
333
                        if (!qualifier_descriptor)
 
334
                                return -1;
 
335
 
 
336
                        /* copy descriptor for this device */
 
337
                        copy_config(urb, qualifier_descriptor,
 
338
                                        sizeof(struct usb_qualifier_descriptor),
 
339
                                        max);
 
340
 
 
341
                }
 
342
                dbg_ep0(3, "copied qualifier descriptor, actual_length: 0x%x",
 
343
                                urb->actual_length);
 
344
#else
 
345
                return -1;
 
346
#endif
 
347
                break;
 
348
 
 
349
        default:
 
350
                return -1;
 
351
        }
 
352
 
 
353
 
 
354
        dbg_ep0 (1, "urb: buffer: %p buffer_length: %2d actual_length: %2d tx_packetSize: %2d",
 
355
                 urb->buffer, urb->buffer_length, urb->actual_length,
 
356
                 device->bus->endpoint_array[0].tx_packetSize);
 
357
/*
 
358
    if ((urb->actual_length < max) && !(urb->actual_length % device->bus->endpoint_array[0].tx_packetSize)) {
 
359
        dbg_ep0(0, "adding null byte");
 
360
        urb->buffer[urb->actual_length++] = 0;
 
361
        dbg_ep0(0, "urb: buffer_length: %2d actual_length: %2d packet size: %2d",
 
362
                urb->buffer_length, urb->actual_length device->bus->endpoint_array[0].tx_packetSize);
 
363
    }
 
364
*/
 
365
        return 0;
 
366
 
 
367
}
 
368
 
 
369
/**
 
370
 * ep0_recv_setup - called to indicate URB has been received
 
371
 * @urb: pointer to struct urb
 
372
 *
 
373
 * Check if this is a setup packet, process the device request, put results
 
374
 * back into the urb and return zero or non-zero to indicate success (DATA)
 
375
 * or failure (STALL).
 
376
 *
 
377
 */
 
378
int ep0_recv_setup (struct urb *urb)
 
379
{
 
380
        /*struct usb_device_request *request = urb->buffer; */
 
381
        /*struct usb_device_instance *device = urb->device; */
 
382
 
 
383
        struct usb_device_request *request;
 
384
        struct usb_device_instance *device;
 
385
        int address;
 
386
 
 
387
        dbg_ep0 (0, "entering ep0_recv_setup()");
 
388
        if (!urb || !urb->device) {
 
389
                dbg_ep0 (3, "invalid URB %p", urb);
 
390
                return -1;
 
391
        }
 
392
 
 
393
        request = &urb->device_request;
 
394
        device = urb->device;
 
395
 
 
396
        dbg_ep0 (3, "urb: %p device: %p", urb, urb->device);
 
397
 
 
398
 
 
399
        /*dbg_ep0(2, "-       -       -       -       -       -       -       -       -       -"); */
 
400
 
 
401
        dbg_ep0 (2,
 
402
                 "bmRequestType:%02x bRequest:%02x wValue:%04x wIndex:%04x wLength:%04x %s",
 
403
                 request->bmRequestType, request->bRequest,
 
404
                 le16_to_cpu (request->wValue), le16_to_cpu (request->wIndex),
 
405
                 le16_to_cpu (request->wLength),
 
406
                 USBD_DEVICE_REQUESTS (request->bRequest));
 
407
 
 
408
        /* handle USB Standard Request (c.f. USB Spec table 9-2) */
 
409
        if ((request->bmRequestType & USB_REQ_TYPE_MASK) != 0) {
 
410
                if(device->device_state <= STATE_CONFIGURED){
 
411
                        /*      Attempt to handle a CDC specific request if we are
 
412
                         *      in the configured state.
 
413
                         */
 
414
                        return device->cdc_recv_setup(request,urb);
 
415
                }
 
416
                dbg_ep0 (1, "non standard request: %x",
 
417
                         request->bmRequestType & USB_REQ_TYPE_MASK);
 
418
                return -1;      /* Stall here */
 
419
        }
 
420
 
 
421
        switch (device->device_state) {
 
422
        case STATE_CREATED:
 
423
        case STATE_ATTACHED:
 
424
        case STATE_POWERED:
 
425
                /* It actually is important to allow requests in these states,
 
426
                 * Windows will request descriptors before assigning an
 
427
                 * address to the client.
 
428
                 */
 
429
 
 
430
                /*dbg_ep0 (1, "request %s not allowed in this state: %s", */
 
431
                /*                USBD_DEVICE_REQUESTS(request->bRequest), */
 
432
                /*                usbd_device_states[device->device_state]); */
 
433
                /*return -1; */
 
434
                break;
 
435
 
 
436
        case STATE_INIT:
 
437
        case STATE_DEFAULT:
 
438
                switch (request->bRequest) {
 
439
                case USB_REQ_GET_STATUS:
 
440
                case USB_REQ_GET_INTERFACE:
 
441
                case USB_REQ_SYNCH_FRAME:       /* XXX should never see this (?) */
 
442
                case USB_REQ_CLEAR_FEATURE:
 
443
                case USB_REQ_SET_FEATURE:
 
444
                case USB_REQ_SET_DESCRIPTOR:
 
445
                        /* case USB_REQ_SET_CONFIGURATION: */
 
446
                case USB_REQ_SET_INTERFACE:
 
447
                        dbg_ep0 (1,
 
448
                                 "request %s not allowed in DEFAULT state: %s",
 
449
                                 USBD_DEVICE_REQUESTS (request->bRequest),
 
450
                                 usbd_device_states[device->device_state]);
 
451
                        return -1;
 
452
 
 
453
                case USB_REQ_SET_CONFIGURATION:
 
454
                case USB_REQ_SET_ADDRESS:
 
455
                case USB_REQ_GET_DESCRIPTOR:
 
456
                case USB_REQ_GET_CONFIGURATION:
 
457
                        break;
 
458
                }
 
459
        case STATE_ADDRESSED:
 
460
        case STATE_CONFIGURED:
 
461
                break;
 
462
        case STATE_UNKNOWN:
 
463
                dbg_ep0 (1, "request %s not allowed in UNKNOWN state: %s",
 
464
                         USBD_DEVICE_REQUESTS (request->bRequest),
 
465
                         usbd_device_states[device->device_state]);
 
466
                return -1;
 
467
        }
 
468
 
 
469
        /* handle all requests that return data (direction bit set on bm RequestType) */
 
470
        if ((request->bmRequestType & USB_REQ_DIRECTION_MASK)) {
 
471
 
 
472
                dbg_ep0 (3, "Device-to-Host");
 
473
 
 
474
                switch (request->bRequest) {
 
475
 
 
476
                case USB_REQ_GET_STATUS:
 
477
                        return ep0_get_status (device, urb, request->wIndex,
 
478
                                               request->bmRequestType &
 
479
                                               USB_REQ_RECIPIENT_MASK);
 
480
 
 
481
                case USB_REQ_GET_DESCRIPTOR:
 
482
                        return ep0_get_descriptor (device, urb,
 
483
                                                   le16_to_cpu (request->wLength),
 
484
                                                   le16_to_cpu (request->wValue) >> 8,
 
485
                                                   le16_to_cpu (request->wValue) & 0xff);
 
486
 
 
487
                case USB_REQ_GET_CONFIGURATION:
 
488
                        serial_printf("get config %d\n", device->configuration);
 
489
                        return ep0_get_one (device, urb,
 
490
                                            device->configuration);
 
491
 
 
492
                case USB_REQ_GET_INTERFACE:
 
493
                        return ep0_get_one (device, urb, device->alternate);
 
494
 
 
495
                case USB_REQ_SYNCH_FRAME:       /* XXX should never see this (?) */
 
496
                        return -1;
 
497
 
 
498
                case USB_REQ_CLEAR_FEATURE:
 
499
                case USB_REQ_SET_FEATURE:
 
500
                case USB_REQ_SET_ADDRESS:
 
501
                case USB_REQ_SET_DESCRIPTOR:
 
502
                case USB_REQ_SET_CONFIGURATION:
 
503
                case USB_REQ_SET_INTERFACE:
 
504
                        return -1;
 
505
                }
 
506
        }
 
507
        /* handle the requests that do not return data */
 
508
        else {
 
509
 
 
510
 
 
511
                /*dbg_ep0(3, "Host-to-Device"); */
 
512
                switch (request->bRequest) {
 
513
 
 
514
                case USB_REQ_CLEAR_FEATURE:
 
515
                case USB_REQ_SET_FEATURE:
 
516
                        dbg_ep0 (0, "Host-to-Device");
 
517
                        switch (request->
 
518
                                bmRequestType & USB_REQ_RECIPIENT_MASK) {
 
519
                        case USB_REQ_RECIPIENT_DEVICE:
 
520
                                /* XXX DEVICE_REMOTE_WAKEUP or TEST_MODE would be added here */
 
521
                                /* XXX fall through for now as we do not support either */
 
522
                        case USB_REQ_RECIPIENT_INTERFACE:
 
523
                        case USB_REQ_RECIPIENT_OTHER:
 
524
                                dbg_ep0 (0, "request %s not",
 
525
                                         USBD_DEVICE_REQUESTS (request->bRequest));
 
526
                        default:
 
527
                                return -1;
 
528
 
 
529
                        case USB_REQ_RECIPIENT_ENDPOINT:
 
530
                                dbg_ep0 (0, "ENDPOINT: %x", le16_to_cpu (request->wValue));
 
531
                                if (le16_to_cpu (request->wValue) == USB_ENDPOINT_HALT) {
 
532
                                        /*return usbd_device_feature (device, le16_to_cpu (request->wIndex), */
 
533
                                        /*                    request->bRequest == USB_REQ_SET_FEATURE); */
 
534
                                        /* NEED TO IMPLEMENT THIS!!! */
 
535
                                        return -1;
 
536
                                } else {
 
537
                                        dbg_ep0 (1, "request %s bad wValue: %04x",
 
538
                                                 USBD_DEVICE_REQUESTS
 
539
                                                 (request->bRequest),
 
540
                                                 le16_to_cpu (request->wValue));
 
541
                                        return -1;
 
542
                                }
 
543
                        }
 
544
 
 
545
                case USB_REQ_SET_ADDRESS:
 
546
                        /* check if this is a re-address, reset first if it is (this shouldn't be possible) */
 
547
                        if (device->device_state != STATE_DEFAULT) {
 
548
                                dbg_ep0 (1, "set_address: %02x state: %s",
 
549
                                         le16_to_cpu (request->wValue),
 
550
                                         usbd_device_states[device->device_state]);
 
551
                                return -1;
 
552
                        }
 
553
                        address = le16_to_cpu (request->wValue);
 
554
                        if ((address & 0x7f) != address) {
 
555
                                dbg_ep0 (1, "invalid address %04x %04x",
 
556
                                         address, address & 0x7f);
 
557
                                return -1;
 
558
                        }
 
559
                        device->address = address;
 
560
 
 
561
                        /*dbg_ep0(2, "address: %d %d %d", */
 
562
                        /*        request->wValue, le16_to_cpu(request->wValue), device->address); */
 
563
 
 
564
                        return 0;
 
565
 
 
566
                case USB_REQ_SET_DESCRIPTOR:    /* XXX should we support this? */
 
567
                        dbg_ep0 (0, "set descriptor: NOT SUPPORTED");
 
568
                        return -1;
 
569
 
 
570
                case USB_REQ_SET_CONFIGURATION:
 
571
                        /* c.f. 9.4.7 - the top half of wValue is reserved */
 
572
                        device->configuration = le16_to_cpu(request->wValue) & 0xff;
 
573
 
 
574
                        /* reset interface and alternate settings */
 
575
                        device->interface = device->alternate = 0;
 
576
 
 
577
                        /*dbg_ep0(2, "set configuration: %d", device->configuration); */
 
578
                        /*serial_printf("DEVICE_CONFIGURED.. event?\n"); */
 
579
                        return 0;
 
580
 
 
581
                case USB_REQ_SET_INTERFACE:
 
582
                        device->interface = le16_to_cpu (request->wIndex);
 
583
                        device->alternate = le16_to_cpu (request->wValue);
 
584
                        /*dbg_ep0(2, "set interface: %d alternate: %d", device->interface, device->alternate); */
 
585
                        serial_printf ("DEVICE_SET_INTERFACE.. event?\n");
 
586
                        return 0;
 
587
 
 
588
                case USB_REQ_GET_STATUS:
 
589
                case USB_REQ_GET_DESCRIPTOR:
 
590
                case USB_REQ_GET_CONFIGURATION:
 
591
                case USB_REQ_GET_INTERFACE:
 
592
                case USB_REQ_SYNCH_FRAME:       /* XXX should never see this (?) */
 
593
                        return -1;
 
594
                }
 
595
        }
 
596
        return -1;
 
597
}