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16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/netdevice.h>
19
20#include "u_serial.h"
21#if defined USB_ETH_RNDIS
22# undef USB_ETH_RNDIS
23#endif
24#ifdef CONFIG_USB_G_MULTI_RNDIS
25# define USB_ETH_RNDIS y
26#endif
27
28
29#define DRIVER_DESC "Multifunction Composite Gadget"
30
31MODULE_DESCRIPTION(DRIVER_DESC);
32MODULE_AUTHOR("Michal Nazarewicz");
33MODULE_LICENSE("GPL");
34
35
36#include "f_mass_storage.h"
37
38#include "u_ecm.h"
39#ifdef USB_ETH_RNDIS
40# include "u_rndis.h"
41# include "rndis.h"
42#endif
43#include "u_ether.h"
44
45USB_GADGET_COMPOSITE_OPTIONS();
46
47USB_ETHERNET_MODULE_PARAMETERS();
48
49
50
51#define MULTI_VENDOR_NUM 0x1d6b
52#define MULTI_PRODUCT_NUM 0x0104
53
54
55enum {
56 __MULTI_NO_CONFIG,
57#ifdef CONFIG_USB_G_MULTI_RNDIS
58 MULTI_RNDIS_CONFIG_NUM,
59#endif
60#ifdef CONFIG_USB_G_MULTI_CDC
61 MULTI_CDC_CONFIG_NUM,
62#endif
63};
64
65
66static struct usb_device_descriptor device_desc = {
67 .bLength = sizeof device_desc,
68 .bDescriptorType = USB_DT_DEVICE,
69
70
71
72 .bDeviceClass = USB_CLASS_MISC ,
73 .bDeviceSubClass = 2,
74 .bDeviceProtocol = 1,
75
76
77 .idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
78 .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
79};
80
81static const struct usb_descriptor_header *otg_desc[2];
82
83enum {
84 MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
85 MULTI_STRING_CDC_CONFIG_IDX,
86};
87
88static struct usb_string strings_dev[] = {
89 [USB_GADGET_MANUFACTURER_IDX].s = "",
90 [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
91 [USB_GADGET_SERIAL_IDX].s = "",
92 [MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
93 [MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM",
94 { }
95};
96
97static struct usb_gadget_strings *dev_strings[] = {
98 &(struct usb_gadget_strings){
99 .language = 0x0409,
100 .strings = strings_dev,
101 },
102 NULL,
103};
104
105
106
107
108
109
110static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
111#ifdef CONFIG_USB_GADGET_DEBUG_FILES
112
113static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
114
115#else
116
117
118
119
120
121#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
122
123#endif
124
125FSG_MODULE_PARAMETERS(, fsg_mod_data);
126
127static struct usb_function_instance *fi_acm;
128static struct usb_function_instance *fi_msg;
129
130
131
132#ifdef USB_ETH_RNDIS
133static struct usb_function_instance *fi_rndis;
134static struct usb_function *f_acm_rndis;
135static struct usb_function *f_rndis;
136static struct usb_function *f_msg_rndis;
137
138static int rndis_do_config(struct usb_configuration *c)
139{
140 struct fsg_opts *fsg_opts;
141 int ret;
142
143 if (gadget_is_otg(c->cdev->gadget)) {
144 c->descriptors = otg_desc;
145 c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
146 }
147
148 f_rndis = usb_get_function(fi_rndis);
149 if (IS_ERR(f_rndis))
150 return PTR_ERR(f_rndis);
151
152 ret = usb_add_function(c, f_rndis);
153 if (ret < 0)
154 goto err_func_rndis;
155
156 f_acm_rndis = usb_get_function(fi_acm);
157 if (IS_ERR(f_acm_rndis)) {
158 ret = PTR_ERR(f_acm_rndis);
159 goto err_func_acm;
160 }
161
162 ret = usb_add_function(c, f_acm_rndis);
163 if (ret)
164 goto err_conf;
165
166 f_msg_rndis = usb_get_function(fi_msg);
167 if (IS_ERR(f_msg_rndis)) {
168 ret = PTR_ERR(f_msg_rndis);
169 goto err_fsg;
170 }
171
172 fsg_opts = fsg_opts_from_func_inst(fi_msg);
173 ret = fsg_common_run_thread(fsg_opts->common);
174 if (ret)
175 goto err_run;
176
177 ret = usb_add_function(c, f_msg_rndis);
178 if (ret)
179 goto err_run;
180
181 return 0;
182err_run:
183 usb_put_function(f_msg_rndis);
184err_fsg:
185 usb_remove_function(c, f_acm_rndis);
186err_conf:
187 usb_put_function(f_acm_rndis);
188err_func_acm:
189 usb_remove_function(c, f_rndis);
190err_func_rndis:
191 usb_put_function(f_rndis);
192 return ret;
193}
194
195static __ref int rndis_config_register(struct usb_composite_dev *cdev)
196{
197 static struct usb_configuration config = {
198 .bConfigurationValue = MULTI_RNDIS_CONFIG_NUM,
199 .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
200 };
201
202 config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
203 config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;
204
205 return usb_add_config(cdev, &config, rndis_do_config);
206}
207
208#else
209
210static __ref int rndis_config_register(struct usb_composite_dev *cdev)
211{
212 return 0;
213}
214
215#endif
216
217
218
219
220#ifdef CONFIG_USB_G_MULTI_CDC
221static struct usb_function_instance *fi_ecm;
222static struct usb_function *f_acm_multi;
223static struct usb_function *f_ecm;
224static struct usb_function *f_msg_multi;
225
226static int cdc_do_config(struct usb_configuration *c)
227{
228 struct fsg_opts *fsg_opts;
229 int ret;
230
231 if (gadget_is_otg(c->cdev->gadget)) {
232 c->descriptors = otg_desc;
233 c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
234 }
235
236 f_ecm = usb_get_function(fi_ecm);
237 if (IS_ERR(f_ecm))
238 return PTR_ERR(f_ecm);
239
240 ret = usb_add_function(c, f_ecm);
241 if (ret < 0)
242 goto err_func_ecm;
243
244
245 f_acm_multi = usb_get_function(fi_acm);
246 if (IS_ERR(f_acm_multi)) {
247 ret = PTR_ERR(f_acm_multi);
248 goto err_func_acm;
249 }
250
251 ret = usb_add_function(c, f_acm_multi);
252 if (ret)
253 goto err_conf;
254
255 f_msg_multi = usb_get_function(fi_msg);
256 if (IS_ERR(f_msg_multi)) {
257 ret = PTR_ERR(f_msg_multi);
258 goto err_fsg;
259 }
260
261 fsg_opts = fsg_opts_from_func_inst(fi_msg);
262 ret = fsg_common_run_thread(fsg_opts->common);
263 if (ret)
264 goto err_run;
265
266 ret = usb_add_function(c, f_msg_multi);
267 if (ret)
268 goto err_run;
269
270 return 0;
271err_run:
272 usb_put_function(f_msg_multi);
273err_fsg:
274 usb_remove_function(c, f_acm_multi);
275err_conf:
276 usb_put_function(f_acm_multi);
277err_func_acm:
278 usb_remove_function(c, f_ecm);
279err_func_ecm:
280 usb_put_function(f_ecm);
281 return ret;
282}
283
284static __ref int cdc_config_register(struct usb_composite_dev *cdev)
285{
286 static struct usb_configuration config = {
287 .bConfigurationValue = MULTI_CDC_CONFIG_NUM,
288 .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
289 };
290
291 config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
292 config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;
293
294 return usb_add_config(cdev, &config, cdc_do_config);
295}
296
297#else
298
299static __ref int cdc_config_register(struct usb_composite_dev *cdev)
300{
301 return 0;
302}
303
304#endif
305
306
307
308
309
310static int __ref multi_bind(struct usb_composite_dev *cdev)
311{
312 struct usb_gadget *gadget = cdev->gadget;
313#ifdef CONFIG_USB_G_MULTI_CDC
314 struct f_ecm_opts *ecm_opts;
315#endif
316#ifdef USB_ETH_RNDIS
317 struct f_rndis_opts *rndis_opts;
318#endif
319 struct fsg_opts *fsg_opts;
320 struct fsg_config config;
321 int status;
322
323 if (!can_support_ecm(cdev->gadget)) {
324 dev_err(&gadget->dev, "controller '%s' not usable\n",
325 gadget->name);
326 return -EINVAL;
327 }
328
329#ifdef CONFIG_USB_G_MULTI_CDC
330 fi_ecm = usb_get_function_instance("ecm");
331 if (IS_ERR(fi_ecm))
332 return PTR_ERR(fi_ecm);
333
334 ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);
335
336 gether_set_qmult(ecm_opts->net, qmult);
337 if (!gether_set_host_addr(ecm_opts->net, host_addr))
338 pr_info("using host ethernet address: %s", host_addr);
339 if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
340 pr_info("using self ethernet address: %s", dev_addr);
341#endif
342
343#ifdef USB_ETH_RNDIS
344 fi_rndis = usb_get_function_instance("rndis");
345 if (IS_ERR(fi_rndis)) {
346 status = PTR_ERR(fi_rndis);
347 goto fail;
348 }
349
350 rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
351
352 gether_set_qmult(rndis_opts->net, qmult);
353 if (!gether_set_host_addr(rndis_opts->net, host_addr))
354 pr_info("using host ethernet address: %s", host_addr);
355 if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
356 pr_info("using self ethernet address: %s", dev_addr);
357#endif
358
359#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
360
361
362
363
364
365
366 gether_set_gadget(ecm_opts->net, cdev->gadget);
367 status = gether_register_netdev(ecm_opts->net);
368 if (status)
369 goto fail0;
370
371 rndis_borrow_net(fi_rndis, ecm_opts->net);
372 ecm_opts->bound = true;
373#endif
374
375
376 fi_acm = usb_get_function_instance("acm");
377 if (IS_ERR(fi_acm)) {
378 status = PTR_ERR(fi_acm);
379 goto fail0;
380 }
381
382
383 fi_msg = usb_get_function_instance("mass_storage");
384 if (IS_ERR(fi_msg)) {
385 status = PTR_ERR(fi_msg);
386 goto fail1;
387 }
388 fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
389 fsg_opts = fsg_opts_from_func_inst(fi_msg);
390
391 fsg_opts->no_configfs = true;
392 status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
393 if (status)
394 goto fail2;
395
396 status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
397 if (status)
398 goto fail_set_cdev;
399
400 fsg_common_set_sysfs(fsg_opts->common, true);
401 status = fsg_common_create_luns(fsg_opts->common, &config);
402 if (status)
403 goto fail_set_cdev;
404
405 fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
406 config.product_name);
407
408
409 status = usb_string_ids_tab(cdev, strings_dev);
410 if (unlikely(status < 0))
411 goto fail_string_ids;
412 device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
413
414 if (gadget_is_otg(gadget) && !otg_desc[0]) {
415 struct usb_descriptor_header *usb_desc;
416
417 usb_desc = usb_otg_descriptor_alloc(gadget);
418 if (!usb_desc)
419 goto fail_string_ids;
420 usb_otg_descriptor_init(gadget, usb_desc);
421 otg_desc[0] = usb_desc;
422 otg_desc[1] = NULL;
423 }
424
425
426 status = rndis_config_register(cdev);
427 if (unlikely(status < 0))
428 goto fail_otg_desc;
429
430 status = cdc_config_register(cdev);
431 if (unlikely(status < 0))
432 goto fail_otg_desc;
433 usb_composite_overwrite_options(cdev, &coverwrite);
434
435
436 dev_info(&gadget->dev, DRIVER_DESC "\n");
437 return 0;
438
439
440
441fail_otg_desc:
442 kfree(otg_desc[0]);
443 otg_desc[0] = NULL;
444fail_string_ids:
445 fsg_common_remove_luns(fsg_opts->common);
446fail_set_cdev:
447 fsg_common_free_buffers(fsg_opts->common);
448fail2:
449 usb_put_function_instance(fi_msg);
450fail1:
451 usb_put_function_instance(fi_acm);
452fail0:
453#ifdef USB_ETH_RNDIS
454 usb_put_function_instance(fi_rndis);
455fail:
456#endif
457#ifdef CONFIG_USB_G_MULTI_CDC
458 usb_put_function_instance(fi_ecm);
459#endif
460 return status;
461}
462
463static int multi_unbind(struct usb_composite_dev *cdev)
464{
465#ifdef CONFIG_USB_G_MULTI_CDC
466 usb_put_function(f_msg_multi);
467#endif
468#ifdef USB_ETH_RNDIS
469 usb_put_function(f_msg_rndis);
470#endif
471 usb_put_function_instance(fi_msg);
472#ifdef CONFIG_USB_G_MULTI_CDC
473 usb_put_function(f_acm_multi);
474#endif
475#ifdef USB_ETH_RNDIS
476 usb_put_function(f_acm_rndis);
477#endif
478 usb_put_function_instance(fi_acm);
479#ifdef USB_ETH_RNDIS
480 usb_put_function(f_rndis);
481 usb_put_function_instance(fi_rndis);
482#endif
483#ifdef CONFIG_USB_G_MULTI_CDC
484 usb_put_function(f_ecm);
485 usb_put_function_instance(fi_ecm);
486#endif
487 kfree(otg_desc[0]);
488 otg_desc[0] = NULL;
489
490 return 0;
491}
492
493
494
495
496
497static struct usb_composite_driver multi_driver = {
498 .name = "g_multi",
499 .dev = &device_desc,
500 .strings = dev_strings,
501 .max_speed = USB_SPEED_HIGH,
502 .bind = multi_bind,
503 .unbind = multi_unbind,
504 .needs_serial = 1,
505};
506
507module_usb_composite_driver(multi_driver);
508
