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usb: Fix USB keyboard polling via control endpoint
[u-boot.git] / drivers / usb / gadget / f_thor.c
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c5279377
ŁM		 1/*
2 * f_thor.c -- USB TIZEN THOR Downloader gadget function
3 *
4 * Copyright (C) 2013 Samsung Electronics
5 * Lukasz Majewski <[email protected]>
6 *
7 * Based on code from:
8 * git://review.tizen.org/kernel/u-boot
9 *
10 * Developed by:
11 * Copyright (C) 2009 Samsung Electronics
12 * Minkyu Kang <[email protected]>
13 * Sanghee Kim <[email protected]>
14 *
15 * SPDX-License-Identifier: GPL-2.0+
16 */
17
18#include <errno.h>
19#include <common.h>
20#include <malloc.h>
21#include <version.h>
22#include <linux/usb/ch9.h>
23#include <linux/usb/gadget.h>
24#include <linux/usb/composite.h>
25#include <linux/usb/cdc.h>
26#include <g_dnl.h>
27#include <dfu.h>
28
29#include "f_thor.h"
30
31static void thor_tx_data(unsigned char *data, int len);
32static void thor_set_dma(void *addr, int len);
33static int thor_rx_data(void);
34
35static struct f_thor *thor_func;
36static inline struct f_thor *func_to_thor(struct usb_function *f)
37{
38 return container_of(f, struct f_thor, usb_function);
39}
40
41DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_tx_data_buf,
42 sizeof(struct rsp_box));
43DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_rx_data_buf,
44 sizeof(struct rqt_box));
45
46/* ********************************************************** */
47/* THOR protocol - transmission handling */
48/* ********************************************************** */
49DEFINE_CACHE_ALIGN_BUFFER(char, f_name, F_NAME_BUF_SIZE);
50static unsigned long long int thor_file_size;
51static int alt_setting_num;
52
53static void send_rsp(const struct rsp_box *rsp)
54{
55 memcpy(thor_tx_data_buf, rsp, sizeof(struct rsp_box));
56 thor_tx_data(thor_tx_data_buf, sizeof(struct rsp_box));
57
58 debug("-RSP: %d, %d\n", rsp->rsp, rsp->rsp_data);
59}
60
61static void send_data_rsp(s32 ack, s32 count)
62{
63 ALLOC_CACHE_ALIGN_BUFFER(struct data_rsp_box, rsp,
64 sizeof(struct data_rsp_box));
65
66 rsp->ack = ack;
67 rsp->count = count;
68
69 memcpy(thor_tx_data_buf, rsp, sizeof(struct data_rsp_box));
70 thor_tx_data(thor_tx_data_buf, sizeof(struct data_rsp_box));
71
72 debug("-DATA RSP: %d, %d\n", ack, count);
73}
74
75static int process_rqt_info(const struct rqt_box *rqt)
76{
77 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
78 memset(rsp, 0, sizeof(struct rsp_box));
79
80 rsp->rsp = rqt->rqt;
81 rsp->rsp_data = rqt->rqt_data;
82
83 switch (rqt->rqt_data) {
84 case RQT_INFO_VER_PROTOCOL:
85 rsp->int_data[0] = VER_PROTOCOL_MAJOR;
86 rsp->int_data[1] = VER_PROTOCOL_MINOR;
87 break;
88 case RQT_INIT_VER_HW:
89 snprintf(rsp->str_data[0], sizeof(rsp->str_data[0]),
90 "%x", checkboard());
91 break;
92 case RQT_INIT_VER_BOOT:
93 sprintf(rsp->str_data[0], "%s", U_BOOT_VERSION);
94 break;
95 case RQT_INIT_VER_KERNEL:
96 sprintf(rsp->str_data[0], "%s", "k unknown");
97 break;
98 case RQT_INIT_VER_PLATFORM:
99 sprintf(rsp->str_data[0], "%s", "p unknown");
100 break;
101 case RQT_INIT_VER_CSC:
102 sprintf(rsp->str_data[0], "%s", "c unknown");
103 break;
104 default:
105 return -EINVAL;
106 }
107
108 send_rsp(rsp);
109 return true;
110}
111
112static int process_rqt_cmd(const struct rqt_box *rqt)
113{
114 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
115 memset(rsp, 0, sizeof(struct rsp_box));
116
117 rsp->rsp = rqt->rqt;
118 rsp->rsp_data = rqt->rqt_data;
119
120 switch (rqt->rqt_data) {
121 case RQT_CMD_REBOOT:
122 debug("TARGET RESET\n");
123 send_rsp(rsp);
124 g_dnl_unregister();
125 dfu_free_entities();
126 run_command("reset", 0);
127 break;
128 case RQT_CMD_POWEROFF:
129 case RQT_CMD_EFSCLEAR:
130 send_rsp(rsp);
131 default:
132 printf("Command not supported -> cmd: %d\n", rqt->rqt_data);
133 return -EINVAL;
134 }
135
136 return true;
137}
138
139static long long int download_head(unsigned long long total,
140 unsigned int packet_size,
141 long long int *left,
142 int *cnt)
143{
144 long long int rcv_cnt = 0, left_to_rcv, ret_rcv;
145 void *transfer_buffer = dfu_get_buf();
146 void *buf = transfer_buffer;
147 int usb_pkt_cnt = 0, ret;
148
149 /*
150 * Files smaller than THOR_STORE_UNIT_SIZE (now 32 MiB) are stored on
151 * the medium.
152 * The packet response is sent on the purpose after successful data
153 * chunk write. There is a room for improvement when asynchronous write
154 * is performed.
155 */
156 while (total - rcv_cnt >= packet_size) {
157 thor_set_dma(buf, packet_size);
158 buf += packet_size;
159 ret_rcv = thor_rx_data();
160 if (ret_rcv < 0)
161 return ret_rcv;
162 rcv_cnt += ret_rcv;
163 debug("%d: RCV data count: %llu cnt: %d\n", usb_pkt_cnt,
164 rcv_cnt, *cnt);
165
166 if ((rcv_cnt % THOR_STORE_UNIT_SIZE) == 0) {
167 ret = dfu_write(dfu_get_entity(alt_setting_num),
168 transfer_buffer, THOR_STORE_UNIT_SIZE,
169 (*cnt)++);
170 if (ret) {
171 error("DFU write failed [%d] cnt: %d",
172 ret, *cnt);
173 return ret;
174 }
175 buf = transfer_buffer;
176 }
177 send_data_rsp(0, ++usb_pkt_cnt);
178 }
179
180 /* Calculate the amount of data to arrive from PC (in bytes) */
181 left_to_rcv = total - rcv_cnt;
182
183 /*
184 * Calculate number of data already received. but not yet stored
185 * on the medium (they are smaller than THOR_STORE_UNIT_SIZE)
186 */
187 *left = left_to_rcv + buf - transfer_buffer;
188 debug("%s: left: %llu left_to_rcv: %llu buf: 0x%p\n", __func__,
189 *left, left_to_rcv, buf);
190
191 if (left_to_rcv) {
192 thor_set_dma(buf, packet_size);
193 ret_rcv = thor_rx_data();
194 if (ret_rcv < 0)
195 return ret_rcv;
196 rcv_cnt += ret_rcv;
197 send_data_rsp(0, ++usb_pkt_cnt);
198 }
199
200 debug("%s: %llu total: %llu cnt: %d\n", __func__, rcv_cnt, total, *cnt);
201
202 return rcv_cnt;
203}
204
205static int download_tail(long long int left, int cnt)
206{
207 void *transfer_buffer = dfu_get_buf();
208 int ret;
209
210 debug("%s: left: %llu cnt: %d\n", __func__, left, cnt);
211
212 if (left) {
213 ret = dfu_write(dfu_get_entity(alt_setting_num),
214 transfer_buffer, left, cnt++);
215 if (ret) {
216 error("DFU write failed [%d]: left: %llu", ret, left);
217 return ret;
218 }
219 }
220
221 /*
222 * To store last "packet" DFU storage backend requires dfu_write with
223 * size parameter equal to 0
224 *
225 * This also frees memory malloc'ed by dfu_get_buf(), so no explicit
226 * need fo call dfu_free_buf() is needed.
227 */
228 ret = dfu_write(dfu_get_entity(alt_setting_num),
229 transfer_buffer, 0, cnt);
230 if (ret)
231 error("DFU write failed [%d] cnt: %d", ret, cnt);
232
233 return ret;
234}
235
236static long long int process_rqt_download(const struct rqt_box *rqt)
237{
238 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
239 static long long int left, ret_head;
240 int file_type, ret = 0;
241 static int cnt;
242
243 memset(rsp, 0, sizeof(struct rsp_box));
244 rsp->rsp = rqt->rqt;
245 rsp->rsp_data = rqt->rqt_data;
246
247 switch (rqt->rqt_data) {
248 case RQT_DL_INIT:
249 thor_file_size = rqt->int_data[0];
250 debug("INIT: total %d bytes\n", rqt->int_data[0]);
251 break;
252 case RQT_DL_FILE_INFO:
253 file_type = rqt->int_data[0];
254 if (file_type == FILE_TYPE_PIT) {
255 puts("PIT table file - not supported\n");
256 rsp->ack = -ENOTSUPP;
257 ret = rsp->ack;
258 break;
259 }
260
261 thor_file_size = rqt->int_data[1];
262 memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
263
264 debug("INFO: name(%s, %d), size(%llu), type(%d)\n",
265 f_name, 0, thor_file_size, file_type);
266
267 rsp->int_data[0] = THOR_PACKET_SIZE;
268
269 alt_setting_num = dfu_get_alt(f_name);
270 if (alt_setting_num < 0) {
271 error("Alt setting [%d] to write not found!",
272 alt_setting_num);
273 rsp->ack = -ENODEV;
274 ret = rsp->ack;
275 }
276 break;
277 case RQT_DL_FILE_START:
278 send_rsp(rsp);
279 ret_head = download_head(thor_file_size, THOR_PACKET_SIZE,
280 &left, &cnt);
281 if (ret_head < 0) {
282 left = 0;
283 cnt = 0;
284 }
285 return ret_head;
286 case RQT_DL_FILE_END:
287 debug("DL FILE_END\n");
288 rsp->ack = download_tail(left, cnt);
289 ret = rsp->ack;
290 left = 0;
291 cnt = 0;
292 break;
293 case RQT_DL_EXIT:
294 debug("DL EXIT\n");
295 break;
296 default:
297 error("Operation not supported: %d", rqt->rqt_data);
298 ret = -ENOTSUPP;
299 }
300
301 send_rsp(rsp);
302 return ret;
303}
304
305static int process_data(void)
306{
307 ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box));
308 int ret = -EINVAL;
309
310 memset(rqt, 0, sizeof(rqt));
311 memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box));
312
313 debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data);
314
315 switch (rqt->rqt) {
316 case RQT_INFO:
317 ret = process_rqt_info(rqt);
318 break;
319 case RQT_CMD:
320 ret = process_rqt_cmd(rqt);
321 break;
322 case RQT_DL:
323 ret = (int) process_rqt_download(rqt);
324 break;
325 case RQT_UL:
326 puts("RQT: UPLOAD not supported!\n");
327 break;
328 default:
329 error("unknown request (%d)", rqt->rqt);
330 }
331
332 return ret;
333}
334
335/* ********************************************************** */
336/* THOR USB Function */
337/* ********************************************************** */
338
339static inline struct usb_endpoint_descriptor *
340ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
341 struct usb_endpoint_descriptor *fs)
342{
343 if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
344 return hs;
345 return fs;
346}
347
348static struct usb_interface_descriptor thor_downloader_intf_data = {
349 .bLength = sizeof(thor_downloader_intf_data),
350 .bDescriptorType = USB_DT_INTERFACE,
351
352 .bNumEndpoints = 2,
353 .bInterfaceClass = USB_CLASS_CDC_DATA,
354};
355
356static struct usb_endpoint_descriptor fs_in_desc = {
357 .bLength = USB_DT_ENDPOINT_SIZE,
358 .bDescriptorType = USB_DT_ENDPOINT,
359
360 .bEndpointAddress = USB_DIR_IN,
361 .bmAttributes = USB_ENDPOINT_XFER_BULK,
362};
363
364static struct usb_endpoint_descriptor fs_out_desc = {
365 .bLength = USB_DT_ENDPOINT_SIZE,
366 .bDescriptorType = USB_DT_ENDPOINT,
367
368 .bEndpointAddress = USB_DIR_OUT,
369 .bmAttributes = USB_ENDPOINT_XFER_BULK,
370};
371
372/* CDC configuration */
373static struct usb_interface_descriptor thor_downloader_intf_int = {
374 .bLength = sizeof(thor_downloader_intf_int),
375 .bDescriptorType = USB_DT_INTERFACE,
376
377 .bNumEndpoints = 1,
378 .bInterfaceClass = USB_CLASS_COMM,
379 /* 0x02 Abstract Line Control Model */
380 .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM,
381 /* 0x01 Common AT commands */
382 .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER,
383};
384
385static struct usb_cdc_header_desc thor_downloader_cdc_header = {
386 .bLength = sizeof(thor_downloader_cdc_header),
387 .bDescriptorType = 0x24, /* CS_INTERFACE */
388 .bDescriptorSubType = 0x00,
389 .bcdCDC = 0x0110,
390};
391
392static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = {
393 .bLength = sizeof(thor_downloader_cdc_call),
394 .bDescriptorType = 0x24, /* CS_INTERFACE */
395 .bDescriptorSubType = 0x01,
396 .bmCapabilities = 0x00,
397 .bDataInterface = 0x01,
398};
399
400static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = {
401 .bLength = sizeof(thor_downloader_cdc_abstract),
402 .bDescriptorType = 0x24, /* CS_INTERFACE */
403 .bDescriptorSubType = 0x02,
404 .bmCapabilities = 0x00,
405};
406
407static struct usb_cdc_union_desc thor_downloader_cdc_union = {
408 .bLength = sizeof(thor_downloader_cdc_union),
409 .bDescriptorType = 0x24, /* CS_INTERFACE */
410 .bDescriptorSubType = USB_CDC_UNION_TYPE,
411};
412
413static struct usb_endpoint_descriptor fs_int_desc = {
414 .bLength = USB_DT_ENDPOINT_SIZE,
415 .bDescriptorType = USB_DT_ENDPOINT,
416
417 .bEndpointAddress = 3 | USB_DIR_IN,
418 .bmAttributes = USB_ENDPOINT_XFER_INT,
419 .wMaxPacketSize = __constant_cpu_to_le16(16),
420
421 .bInterval = 0x9,
422};
423
424static struct usb_interface_assoc_descriptor
425thor_iad_descriptor = {
426 .bLength = sizeof(thor_iad_descriptor),
427 .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
428
429 .bFirstInterface = 0,
430 .bInterfaceCount = 2, /* control + data */
431 .bFunctionClass = USB_CLASS_COMM,
432 .bFunctionSubClass = USB_CDC_SUBCLASS_ACM,
433 .bFunctionProtocol = USB_CDC_PROTO_NONE,
434};
435
436static struct usb_endpoint_descriptor hs_in_desc = {
437 .bLength = USB_DT_ENDPOINT_SIZE,
438 .bDescriptorType = USB_DT_ENDPOINT,
439
440 .bmAttributes = USB_ENDPOINT_XFER_BULK,
441 .wMaxPacketSize = __constant_cpu_to_le16(512),
442};
443
444static struct usb_endpoint_descriptor hs_out_desc = {
445 .bLength = USB_DT_ENDPOINT_SIZE,
446 .bDescriptorType = USB_DT_ENDPOINT,
447
448 .bmAttributes = USB_ENDPOINT_XFER_BULK,
449 .wMaxPacketSize = __constant_cpu_to_le16(512),
450};
451
452static struct usb_endpoint_descriptor hs_int_desc = {
453 .bLength = USB_DT_ENDPOINT_SIZE,
454 .bDescriptorType = USB_DT_ENDPOINT,
455
456 .bmAttributes = USB_ENDPOINT_XFER_INT,
457 .wMaxPacketSize = __constant_cpu_to_le16(16),
458
459 .bInterval = 0x9,
460};
461
462static struct usb_qualifier_descriptor dev_qualifier = {
463 .bLength = sizeof(dev_qualifier),
464 .bDescriptorType = USB_DT_DEVICE_QUALIFIER,
465
466 .bcdUSB = __constant_cpu_to_le16(0x0200),
467 .bDeviceClass = USB_CLASS_VENDOR_SPEC,
468
469 .bNumConfigurations = 2,
470};
471
472/*
473 * This attribute vendor descriptor is necessary for correct operation with
474 * Windows version of THOR download program
475 *
476 * It prevents windows driver from sending zero lenght packet (ZLP) after
477 * each THOR_PACKET_SIZE. This assures consistent behaviour with libusb
478 */
479static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = {
480 .bLength = sizeof(thor_downloader_cdc_av),
481 .bDescriptorType = 0x24,
482 .bDescriptorSubType = 0x80,
483 .DAUType = 0x0002,
484 .DAULength = 0x0001,
485 .DAUValue = 0x00,
486};
487
488static const struct usb_descriptor_header *hs_thor_downloader_function[] = {
489 (struct usb_descriptor_header *)&thor_iad_descriptor,
490
491 (struct usb_descriptor_header *)&thor_downloader_intf_int,
492 (struct usb_descriptor_header *)&thor_downloader_cdc_header,
493 (struct usb_descriptor_header *)&thor_downloader_cdc_call,
494 (struct usb_descriptor_header *)&thor_downloader_cdc_abstract,
495 (struct usb_descriptor_header *)&thor_downloader_cdc_union,
496 (struct usb_descriptor_header *)&hs_int_desc,
497
498 (struct usb_descriptor_header *)&thor_downloader_intf_data,
499 (struct usb_descriptor_header *)&thor_downloader_cdc_av,
500 (struct usb_descriptor_header *)&hs_in_desc,
501 (struct usb_descriptor_header *)&hs_out_desc,
502 NULL,
503};
504
505/*-------------------------------------------------------------------------*/
506static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
507{
508 struct usb_request *req;
509
510 req = usb_ep_alloc_request(ep, 0);
511 if (!req)
512 return req;
513
514 req->length = length;
515 req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length);
516 if (!req->buf) {
517 usb_ep_free_request(ep, req);
518 req = NULL;
519 }
520
521 return req;
522}
523
524static int thor_rx_data(void)
525{
526 struct thor_dev *dev = thor_func->dev;
527 int data_to_rx, tmp, status;
528
529 data_to_rx = dev->out_req->length;
530 tmp = data_to_rx;
531 do {
532 dev->out_req->length = data_to_rx;
533 debug("dev->out_req->length:%d dev->rxdata:%d\n",
534 dev->out_req->length, dev->rxdata);
535
536 status = usb_ep_queue(dev->out_ep, dev->out_req, 0);
537 if (status) {
538 error("kill %s: resubmit %d bytes --> %d",
539 dev->out_ep->name, dev->out_req->length, status);
540 usb_ep_set_halt(dev->out_ep);
541 return -EAGAIN;
542 }
543
544 while (!dev->rxdata) {
545 usb_gadget_handle_interrupts();
546 if (ctrlc())
547 return -1;
548 }
549 dev->rxdata = 0;
550 data_to_rx -= dev->out_req->actual;
551 } while (data_to_rx);
552
553 return tmp;
554}
555
556static void thor_tx_data(unsigned char *data, int len)
557{
558 struct thor_dev *dev = thor_func->dev;
559 unsigned char *ptr = dev->in_req->buf;
560 int status;
561
562 memset(ptr, 0, len);
563 memcpy(ptr, data, len);
564
565 dev->in_req->length = len;
566
567 debug("%s: dev->in_req->length:%d to_cpy:%d\n", __func__,
568 dev->in_req->length, sizeof(data));
569
570 status = usb_ep_queue(dev->in_ep, dev->in_req, 0);
571 if (status) {
572 error("kill %s: resubmit %d bytes --> %d",
573 dev->in_ep->name, dev->in_req->length, status);
574 usb_ep_set_halt(dev->in_ep);
575 }
576
577 /* Wait until tx interrupt received */
578 while (!dev->txdata)
579 usb_gadget_handle_interrupts();
580
581 dev->txdata = 0;
582}
583
584static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req)
585{
586 struct thor_dev *dev = thor_func->dev;
587 int status = req->status;
588
589 debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req);
590 switch (status) {
591 case 0:
592 if (ep == dev->out_ep)
593 dev->rxdata = 1;
594 else
595 dev->txdata = 1;
596
597 break;
598
599 /* this endpoint is normally active while we're configured */
600 case -ECONNABORTED: /* hardware forced ep reset */
601 case -ECONNRESET: /* request dequeued */
602 case -ESHUTDOWN: /* disconnect from host */
603 case -EREMOTEIO: /* short read */
604 case -EOVERFLOW:
605 error("ERROR:%d", status);
606 break;
607 }
608
609 debug("%s complete --> %d, %d/%d\n", ep->name,
610 status, req->actual, req->length);
611}
612
613static struct usb_request *thor_start_ep(struct usb_ep *ep)
614{
615 struct usb_request *req;
616
84c13e6f 617 req = alloc_ep_req(ep, THOR_PACKET_SIZE);
c5279377
ŁM		 618 debug("%s: ep:%p req:%p\n", __func__, ep, req);
619
620 if (!req)
621 return NULL;
622
623 memset(req->buf, 0, req->length);
624 req->complete = thor_rx_tx_complete;
625
c5279377
ŁM		 626 return req;
627}
628
629static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req)
630{
631 if (req->status || req->actual != req->length)
632 debug("setup complete --> %d, %d/%d\n",
633 req->status, req->actual, req->length);
634}
635
636static int
637thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
638{
639 struct thor_dev *dev = thor_func->dev;
640 struct usb_request *req = dev->req;
641 struct usb_gadget *gadget = dev->gadget;
642 int value = 0;
643
644 u16 len = le16_to_cpu(ctrl->wLength);
645
646 debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n",
647 ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex,
648 ctrl->wLength);
649
650 switch (ctrl->bRequest) {
651 case USB_CDC_REQ_SET_CONTROL_LINE_STATE:
652 value = 0;
653 break;
654 case USB_CDC_REQ_SET_LINE_CODING:
655 value = len;
656 /* Line Coding set done = configuration done */
657 thor_func->dev->configuration_done = 1;
658 break;
659
660 default:
661 error("thor_setup: unknown request: %d", ctrl->bRequest);
662 }
663
664 if (value >= 0) {
665 req->length = value;
666 req->zero = value < len;
667 value = usb_ep_queue(gadget->ep0, req, 0);
668 if (value < 0) {
669 debug("%s: ep_queue: %d\n", __func__, value);
670 req->status = 0;
671 }
672 }
673
674 return value;
675}
676
677/* Specific to the THOR protocol */
678static void thor_set_dma(void *addr, int len)
679{
680 struct thor_dev *dev = thor_func->dev;
681
682 debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req);
683 debug("addr:%p, len:%d\n", addr, len);
684
685 dev->out_req->buf = addr;
686 dev->out_req->length = len;
687}
688
689int thor_init(void)
690{
691 struct thor_dev *dev = thor_func->dev;
692
693 /* Wait for a device enumeration and configuration settings */
694 debug("THOR enumeration/configuration setting....\n");
695 while (!dev->configuration_done)
696 usb_gadget_handle_interrupts();
697
698 thor_set_dma(thor_rx_data_buf, strlen("THOR"));
699 /* detect the download request from Host PC */
700 if (thor_rx_data() < 0) {
701 printf("%s: Data not received!\n", __func__);
702 return -1;
703 }
704
705 if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) {
706 puts("Download request from the Host PC\n");
707 udelay(30 * 1000); /* 30 ms */
708
709 strcpy((char *)thor_tx_data_buf, "ROHT");
710 thor_tx_data(thor_tx_data_buf, strlen("ROHT"));
711 } else {
712 puts("Wrong reply information\n");
713 return -1;
714 }
715
716 return 0;
717}
718
719int thor_handle(void)
720{
721 int ret;
722
723 /* receive the data from Host PC */
724 while (1) {
725 thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box));
726 ret = thor_rx_data();
727
728 if (ret > 0) {
729 ret = process_data();
730 if (ret < 0)
731 return ret;
732 } else {
733 printf("%s: No data received!\n", __func__);
734 break;
735 }
736 }
737
738 return 0;
739}
740
741static int thor_func_bind(struct usb_configuration *c, struct usb_function *f)
742{
743 struct usb_gadget *gadget = c->cdev->gadget;
744 struct f_thor *f_thor = func_to_thor(f);
745 struct thor_dev *dev;
746 struct usb_ep *ep;
747 int status;
748
749 thor_func = f_thor;
750 dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev));
751 if (!dev)
752 return -ENOMEM;
753
754 memset(dev, 0, sizeof(*dev));
755 dev->gadget = gadget;
756 f_thor->dev = dev;
757
758 debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n",
759 __func__, c, f);
760 debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev);
761
762 /* EP0 */
763 /* preallocate control response and buffer */
764 dev->req = usb_ep_alloc_request(gadget->ep0, 0);
765 if (!dev->req) {
766 status = -ENOMEM;
767 goto fail;
768 }
769 dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
770 gadget->ep0->maxpacket);
771 if (!dev->req->buf) {
772 status = -ENOMEM;
773 goto fail;
774 }
775
776 dev->req->complete = thor_setup_complete;
777
778 /* DYNAMIC interface numbers assignments */
779 status = usb_interface_id(c, f);
780
781 if (status < 0)
782 goto fail;
783
784 thor_downloader_intf_int.bInterfaceNumber = status;
785 thor_downloader_cdc_union.bMasterInterface0 = status;
786
787 status = usb_interface_id(c, f);
788
789 if (status < 0)
790 goto fail;
791
792 thor_downloader_intf_data.bInterfaceNumber = status;
793 thor_downloader_cdc_union.bSlaveInterface0 = status;
794
795 /* allocate instance-specific endpoints */
796 ep = usb_ep_autoconfig(gadget, &fs_in_desc);
797 if (!ep) {
798 status = -ENODEV;
799 goto fail;
800 }
801
802 if (gadget_is_dualspeed(gadget)) {
803 hs_in_desc.bEndpointAddress =
804 fs_in_desc.bEndpointAddress;
805 }
806
807 dev->in_ep = ep; /* Store IN EP for enabling @ setup */
808
809 ep = usb_ep_autoconfig(gadget, &fs_out_desc);
810 if (!ep) {
811 status = -ENODEV;
812 goto fail;
813 }
814
815 if (gadget_is_dualspeed(gadget))
816 hs_out_desc.bEndpointAddress =
817 fs_out_desc.bEndpointAddress;
818
819 dev->out_ep = ep; /* Store OUT EP for enabling @ setup */
820
821 ep = usb_ep_autoconfig(gadget, &fs_int_desc);
822 if (!ep) {
823 status = -ENODEV;
824 goto fail;
825 }
826
827 dev->int_ep = ep;
828
829 if (gadget_is_dualspeed(gadget)) {
830 hs_int_desc.bEndpointAddress =
831 fs_int_desc.bEndpointAddress;
832
833 f->hs_descriptors = (struct usb_descriptor_header **)
834 &hs_thor_downloader_function;
835
836 if (!f->hs_descriptors)
837 goto fail;
838 }
839
840 debug("%s: out_ep:%p out_req:%p\n", __func__,
841 dev->out_ep, dev->out_req);
842
843 return 0;
844
845 fail:
846 free(dev);
847 return status;
848}
849
850static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
851{
852 free(req->buf);
853 usb_ep_free_request(ep, req);
854}
855
856static void thor_unbind(struct usb_configuration *c, struct usb_function *f)
857{
858 struct f_thor *f_thor = func_to_thor(f);
859 struct thor_dev *dev = f_thor->dev;
860
861 free(dev);
862 memset(thor_func, 0, sizeof(*thor_func));
863 thor_func = NULL;
864}
865
866static void thor_func_disable(struct usb_function *f)
867{
868 struct f_thor *f_thor = func_to_thor(f);
869 struct thor_dev *dev = f_thor->dev;
870
871 debug("%s:\n", __func__);
872
873 /* Avoid freeing memory when ep is still claimed */
874 if (dev->in_ep->driver_data) {
875 free_ep_req(dev->in_ep, dev->in_req);
876 usb_ep_disable(dev->in_ep);
877 dev->in_ep->driver_data = NULL;
878 }
879
880 if (dev->out_ep->driver_data) {
881 dev->out_req->buf = NULL;
882 usb_ep_free_request(dev->out_ep, dev->out_req);
883 usb_ep_disable(dev->out_ep);
884 dev->out_ep->driver_data = NULL;
885 }
886
887 if (dev->int_ep->driver_data) {
888 usb_ep_disable(dev->int_ep);
889 dev->int_ep->driver_data = NULL;
890 }
891}
892
893static int thor_eps_setup(struct usb_function *f)
894{
895 struct usb_composite_dev *cdev = f->config->cdev;
896 struct usb_gadget *gadget = cdev->gadget;
897 struct thor_dev *dev = thor_func->dev;
898 struct usb_endpoint_descriptor *d;
899 struct usb_request *req;
900 struct usb_ep *ep;
901 int result;
902
903 ep = dev->in_ep;
904 d = ep_desc(gadget, &hs_in_desc, &fs_in_desc);
905 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
906
907 result = usb_ep_enable(ep, d);
908 if (result)
909 goto exit;
910
911 ep->driver_data = cdev; /* claim */
912 req = thor_start_ep(ep);
913 if (!req) {
914 usb_ep_disable(ep);
915 result = -EIO;
916 goto exit;
917 }
918
919 dev->in_req = req;
920 ep = dev->out_ep;
921 d = ep_desc(gadget, &hs_out_desc, &fs_out_desc);
922 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
923
924 result = usb_ep_enable(ep, d);
925 if (result)
926 goto exit;
927
928 ep->driver_data = cdev; /* claim */
929 req = thor_start_ep(ep);
930 if (!req) {
931 usb_ep_disable(ep);
932 result = -EIO;
933 goto exit;
934 }
935
936 dev->out_req = req;
937 /* ACM control EP */
938 ep = dev->int_ep;
939 ep->driver_data = cdev; /* claim */
940
941 exit:
942 return result;
943}
944
945static int thor_func_set_alt(struct usb_function *f,
946 unsigned intf, unsigned alt)
947{
948 struct thor_dev *dev = thor_func->dev;
949 int result;
950
951 debug("%s: func: %s intf: %d alt: %d\n",
952 __func__, f->name, intf, alt);
953
954 switch (intf) {
955 case 0:
956 debug("ACM INTR interface\n");
957 break;
958 case 1:
959 debug("Communication Data interface\n");
960 result = thor_eps_setup(f);
961 if (result)
962 error("%s: EPs setup failed!", __func__);
963 dev->configuration_done = 1;
964 break;
965 }
966
967 return 0;
968}
969
970static int thor_func_init(struct usb_configuration *c)
971{
972 struct f_thor *f_thor;
973 int status;
974
975 debug("%s: cdev: 0x%p\n", __func__, c->cdev);
976
977 f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor));
978 if (!f_thor)
979 return -ENOMEM;
980
981 memset(f_thor, 0, sizeof(*f_thor));
982
983 f_thor->usb_function.name = "f_thor";
984 f_thor->usb_function.bind = thor_func_bind;
985 f_thor->usb_function.unbind = thor_unbind;
986 f_thor->usb_function.setup = thor_func_setup;
987 f_thor->usb_function.set_alt = thor_func_set_alt;
988 f_thor->usb_function.disable = thor_func_disable;
989
990 status = usb_add_function(c, &f_thor->usb_function);
991 if (status)
992 free(f_thor);
993
994 return status;
995}
996
997int thor_add(struct usb_configuration *c)
998{
999 debug("%s:\n", __func__);
1000 return thor_func_init(c);
1001}
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