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usb: gadget: f_thor: Free the allocated out request buffer
[people/ms/u-boot.git] / drivers / usb / gadget / f_thor.c
CommitLineData
c5279377
ŁM		 1/*
2 * f_thor.c -- USB TIZEN THOR Downloader gadget function
3 *
4 * Copyright (C) 2013 Samsung Electronics
5 * Lukasz Majewski <l.majewski@samsung.com>
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 <mk7.kang@samsung.com>
13 * Sanghee Kim <sh0130.kim@samsung.com>
14 *
15 * SPDX-License-Identifier: GPL-2.0+
16 */
17
18#include <errno.h>
19#include <common.h>
24b852a7 20#include <console.h>
c5279377 21#include <malloc.h>
cf92e05c 22#include <memalign.h>
c5279377
ŁM		 23#include <version.h>
24#include <linux/usb/ch9.h>
25#include <linux/usb/gadget.h>
26#include <linux/usb/composite.h>
27#include <linux/usb/cdc.h>
28#include <g_dnl.h>
29#include <dfu.h>
30
31#include "f_thor.h"
32
33static void thor_tx_data(unsigned char *data, int len);
34static void thor_set_dma(void *addr, int len);
35static int thor_rx_data(void);
36
37static struct f_thor *thor_func;
38static inline struct f_thor *func_to_thor(struct usb_function *f)
39{
40 return container_of(f, struct f_thor, usb_function);
41}
42
43DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_tx_data_buf,
44 sizeof(struct rsp_box));
45DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_rx_data_buf,
46 sizeof(struct rqt_box));
47
48/* ********************************************************** */
49/* THOR protocol - transmission handling */
50/* ********************************************************** */
51DEFINE_CACHE_ALIGN_BUFFER(char, f_name, F_NAME_BUF_SIZE);
52static unsigned long long int thor_file_size;
53static int alt_setting_num;
54
55static void send_rsp(const struct rsp_box *rsp)
56{
57 memcpy(thor_tx_data_buf, rsp, sizeof(struct rsp_box));
58 thor_tx_data(thor_tx_data_buf, sizeof(struct rsp_box));
59
60 debug("-RSP: %d, %d\n", rsp->rsp, rsp->rsp_data);
61}
62
63static void send_data_rsp(s32 ack, s32 count)
64{
65 ALLOC_CACHE_ALIGN_BUFFER(struct data_rsp_box, rsp,
66 sizeof(struct data_rsp_box));
67
68 rsp->ack = ack;
69 rsp->count = count;
70
71 memcpy(thor_tx_data_buf, rsp, sizeof(struct data_rsp_box));
72 thor_tx_data(thor_tx_data_buf, sizeof(struct data_rsp_box));
73
74 debug("-DATA RSP: %d, %d\n", ack, count);
75}
76
77static int process_rqt_info(const struct rqt_box *rqt)
78{
79 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
80 memset(rsp, 0, sizeof(struct rsp_box));
81
82 rsp->rsp = rqt->rqt;
83 rsp->rsp_data = rqt->rqt_data;
84
85 switch (rqt->rqt_data) {
86 case RQT_INFO_VER_PROTOCOL:
87 rsp->int_data[0] = VER_PROTOCOL_MAJOR;
88 rsp->int_data[1] = VER_PROTOCOL_MINOR;
89 break;
90 case RQT_INIT_VER_HW:
91 snprintf(rsp->str_data[0], sizeof(rsp->str_data[0]),
92 "%x", checkboard());
93 break;
94 case RQT_INIT_VER_BOOT:
95 sprintf(rsp->str_data[0], "%s", U_BOOT_VERSION);
96 break;
97 case RQT_INIT_VER_KERNEL:
98 sprintf(rsp->str_data[0], "%s", "k unknown");
99 break;
100 case RQT_INIT_VER_PLATFORM:
101 sprintf(rsp->str_data[0], "%s", "p unknown");
102 break;
103 case RQT_INIT_VER_CSC:
104 sprintf(rsp->str_data[0], "%s", "c unknown");
105 break;
106 default:
107 return -EINVAL;
108 }
109
110 send_rsp(rsp);
111 return true;
112}
113
114static int process_rqt_cmd(const struct rqt_box *rqt)
115{
116 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
117 memset(rsp, 0, sizeof(struct rsp_box));
118
119 rsp->rsp = rqt->rqt;
120 rsp->rsp_data = rqt->rqt_data;
121
122 switch (rqt->rqt_data) {
123 case RQT_CMD_REBOOT:
124 debug("TARGET RESET\n");
125 send_rsp(rsp);
126 g_dnl_unregister();
127 dfu_free_entities();
41d237de
SDPP		 128#ifdef CONFIG_THOR_RESET_OFF
129 return RESET_DONE;
130#endif
c5279377
ŁM		 131 run_command("reset", 0);
132 break;
133 case RQT_CMD_POWEROFF:
134 case RQT_CMD_EFSCLEAR:
135 send_rsp(rsp);
136 default:
137 printf("Command not supported -> cmd: %d\n", rqt->rqt_data);
138 return -EINVAL;
139 }
140
141 return true;
142}
143
144static long long int download_head(unsigned long long total,
145 unsigned int packet_size,
146 long long int *left,
147 int *cnt)
148{
149 long long int rcv_cnt = 0, left_to_rcv, ret_rcv;
7ac1b410
SW		 150 struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num);
151 void *transfer_buffer = dfu_get_buf(dfu_entity);
c5279377
ŁM		 152 void *buf = transfer_buffer;
153 int usb_pkt_cnt = 0, ret;
154
155 /*
156 * Files smaller than THOR_STORE_UNIT_SIZE (now 32 MiB) are stored on
157 * the medium.
158 * The packet response is sent on the purpose after successful data
159 * chunk write. There is a room for improvement when asynchronous write
160 * is performed.
161 */
162 while (total - rcv_cnt >= packet_size) {
163 thor_set_dma(buf, packet_size);
164 buf += packet_size;
165 ret_rcv = thor_rx_data();
166 if (ret_rcv < 0)
167 return ret_rcv;
168 rcv_cnt += ret_rcv;
169 debug("%d: RCV data count: %llu cnt: %d\n", usb_pkt_cnt,
170 rcv_cnt, *cnt);
171
172 if ((rcv_cnt % THOR_STORE_UNIT_SIZE) == 0) {
173 ret = dfu_write(dfu_get_entity(alt_setting_num),
174 transfer_buffer, THOR_STORE_UNIT_SIZE,
175 (*cnt)++);
176 if (ret) {
177 error("DFU write failed [%d] cnt: %d",
178 ret, *cnt);
179 return ret;
180 }
181 buf = transfer_buffer;
182 }
183 send_data_rsp(0, ++usb_pkt_cnt);
184 }
185
186 /* Calculate the amount of data to arrive from PC (in bytes) */
187 left_to_rcv = total - rcv_cnt;
188
189 /*
190 * Calculate number of data already received. but not yet stored
191 * on the medium (they are smaller than THOR_STORE_UNIT_SIZE)
192 */
193 *left = left_to_rcv + buf - transfer_buffer;
194 debug("%s: left: %llu left_to_rcv: %llu buf: 0x%p\n", __func__,
195 *left, left_to_rcv, buf);
196
197 if (left_to_rcv) {
198 thor_set_dma(buf, packet_size);
199 ret_rcv = thor_rx_data();
200 if (ret_rcv < 0)
201 return ret_rcv;
202 rcv_cnt += ret_rcv;
203 send_data_rsp(0, ++usb_pkt_cnt);
204 }
205
206 debug("%s: %llu total: %llu cnt: %d\n", __func__, rcv_cnt, total, *cnt);
207
208 return rcv_cnt;
209}
210
211static int download_tail(long long int left, int cnt)
212{
62a96d80
PM		 213 struct dfu_entity *dfu_entity;
214 void *transfer_buffer;
c5279377
ŁM		 215 int ret;
216
217 debug("%s: left: %llu cnt: %d\n", __func__, left, cnt);
218
62a96d80
PM		 219 dfu_entity = dfu_get_entity(alt_setting_num);
220 if (!dfu_entity) {
221 error("Alt setting: %d entity not found!\n", alt_setting_num);
222 return -ENOENT;
223 }
224
225 transfer_buffer = dfu_get_buf(dfu_entity);
226 if (!transfer_buffer) {
227 error("Transfer buffer not allocated!");
228 return -ENXIO;
229 }
230
c5279377 231 if (left) {
adfc17bf 232 ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++);
c5279377
ŁM		 233 if (ret) {
234 error("DFU write failed [%d]: left: %llu", ret, left);
235 return ret;
236 }
237 }
238
239 /*
584b55b0
PM		 240 * To store last "packet" or write file from buffer to filesystem
241 * DFU storage backend requires dfu_flush
c5279377
ŁM		 242 *
243 * This also frees memory malloc'ed by dfu_get_buf(), so no explicit
244 * need fo call dfu_free_buf() is needed.
245 */
fd2a89b2 246 ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt);
584b55b0 247 if (ret)
fd2a89b2 248 error("DFU flush failed!");
fd2a89b2 249
c5279377
ŁM		 250 return ret;
251}
252
253static long long int process_rqt_download(const struct rqt_box *rqt)
254{
255 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
256 static long long int left, ret_head;
257 int file_type, ret = 0;
258 static int cnt;
259
260 memset(rsp, 0, sizeof(struct rsp_box));
261 rsp->rsp = rqt->rqt;
262 rsp->rsp_data = rqt->rqt_data;
263
264 switch (rqt->rqt_data) {
265 case RQT_DL_INIT:
266 thor_file_size = rqt->int_data[0];
267 debug("INIT: total %d bytes\n", rqt->int_data[0]);
268 break;
269 case RQT_DL_FILE_INFO:
270 file_type = rqt->int_data[0];
271 if (file_type == FILE_TYPE_PIT) {
272 puts("PIT table file - not supported\n");
273 rsp->ack = -ENOTSUPP;
274 ret = rsp->ack;
275 break;
276 }
277
278 thor_file_size = rqt->int_data[1];
279 memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
280
281 debug("INFO: name(%s, %d), size(%llu), type(%d)\n",
282 f_name, 0, thor_file_size, file_type);
283
284 rsp->int_data[0] = THOR_PACKET_SIZE;
285
286 alt_setting_num = dfu_get_alt(f_name);
287 if (alt_setting_num < 0) {
288 error("Alt setting [%d] to write not found!",
289 alt_setting_num);
290 rsp->ack = -ENODEV;
291 ret = rsp->ack;
292 }
293 break;
294 case RQT_DL_FILE_START:
295 send_rsp(rsp);
296 ret_head = download_head(thor_file_size, THOR_PACKET_SIZE,
297 &left, &cnt);
298 if (ret_head < 0) {
299 left = 0;
300 cnt = 0;
301 }
302 return ret_head;
303 case RQT_DL_FILE_END:
304 debug("DL FILE_END\n");
305 rsp->ack = download_tail(left, cnt);
306 ret = rsp->ack;
307 left = 0;
308 cnt = 0;
309 break;
310 case RQT_DL_EXIT:
311 debug("DL EXIT\n");
312 break;
313 default:
314 error("Operation not supported: %d", rqt->rqt_data);
315 ret = -ENOTSUPP;
316 }
317
318 send_rsp(rsp);
319 return ret;
320}
321
322static int process_data(void)
323{
324 ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box));
325 int ret = -EINVAL;
326
c5279377
ŁM		 327 memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box));
328
329 debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data);
330
331 switch (rqt->rqt) {
332 case RQT_INFO:
333 ret = process_rqt_info(rqt);
334 break;
335 case RQT_CMD:
336 ret = process_rqt_cmd(rqt);
337 break;
338 case RQT_DL:
339 ret = (int) process_rqt_download(rqt);
340 break;
341 case RQT_UL:
342 puts("RQT: UPLOAD not supported!\n");
343 break;
344 default:
345 error("unknown request (%d)", rqt->rqt);
346 }
347
348 return ret;
349}
350
351/* ********************************************************** */
352/* THOR USB Function */
353/* ********************************************************** */
354
355static inline struct usb_endpoint_descriptor *
356ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
357 struct usb_endpoint_descriptor *fs)
358{
359 if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
360 return hs;
361 return fs;
362}
363
364static struct usb_interface_descriptor thor_downloader_intf_data = {
365 .bLength = sizeof(thor_downloader_intf_data),
366 .bDescriptorType = USB_DT_INTERFACE,
367
368 .bNumEndpoints = 2,
369 .bInterfaceClass = USB_CLASS_CDC_DATA,
370};
371
372static struct usb_endpoint_descriptor fs_in_desc = {
373 .bLength = USB_DT_ENDPOINT_SIZE,
374 .bDescriptorType = USB_DT_ENDPOINT,
375
376 .bEndpointAddress = USB_DIR_IN,
377 .bmAttributes = USB_ENDPOINT_XFER_BULK,
378};
379
380static struct usb_endpoint_descriptor fs_out_desc = {
381 .bLength = USB_DT_ENDPOINT_SIZE,
382 .bDescriptorType = USB_DT_ENDPOINT,
383
384 .bEndpointAddress = USB_DIR_OUT,
385 .bmAttributes = USB_ENDPOINT_XFER_BULK,
386};
387
388/* CDC configuration */
389static struct usb_interface_descriptor thor_downloader_intf_int = {
390 .bLength = sizeof(thor_downloader_intf_int),
391 .bDescriptorType = USB_DT_INTERFACE,
392
393 .bNumEndpoints = 1,
394 .bInterfaceClass = USB_CLASS_COMM,
395 /* 0x02 Abstract Line Control Model */
396 .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM,
397 /* 0x01 Common AT commands */
398 .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER,
399};
400
401static struct usb_cdc_header_desc thor_downloader_cdc_header = {
402 .bLength = sizeof(thor_downloader_cdc_header),
403 .bDescriptorType = 0x24, /* CS_INTERFACE */
404 .bDescriptorSubType = 0x00,
405 .bcdCDC = 0x0110,
406};
407
408static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = {
409 .bLength = sizeof(thor_downloader_cdc_call),
410 .bDescriptorType = 0x24, /* CS_INTERFACE */
411 .bDescriptorSubType = 0x01,
412 .bmCapabilities = 0x00,
413 .bDataInterface = 0x01,
414};
415
416static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = {
417 .bLength = sizeof(thor_downloader_cdc_abstract),
418 .bDescriptorType = 0x24, /* CS_INTERFACE */
419 .bDescriptorSubType = 0x02,
420 .bmCapabilities = 0x00,
421};
422
423static struct usb_cdc_union_desc thor_downloader_cdc_union = {
424 .bLength = sizeof(thor_downloader_cdc_union),
425 .bDescriptorType = 0x24, /* CS_INTERFACE */
426 .bDescriptorSubType = USB_CDC_UNION_TYPE,
427};
428
429static struct usb_endpoint_descriptor fs_int_desc = {
430 .bLength = USB_DT_ENDPOINT_SIZE,
431 .bDescriptorType = USB_DT_ENDPOINT,
432
433 .bEndpointAddress = 3 | USB_DIR_IN,
434 .bmAttributes = USB_ENDPOINT_XFER_INT,
435 .wMaxPacketSize = __constant_cpu_to_le16(16),
436
437 .bInterval = 0x9,
438};
439
440static struct usb_interface_assoc_descriptor
441thor_iad_descriptor = {
442 .bLength = sizeof(thor_iad_descriptor),
443 .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
444
445 .bFirstInterface = 0,
446 .bInterfaceCount = 2, /* control + data */
447 .bFunctionClass = USB_CLASS_COMM,
448 .bFunctionSubClass = USB_CDC_SUBCLASS_ACM,
449 .bFunctionProtocol = USB_CDC_PROTO_NONE,
450};
451
452static struct usb_endpoint_descriptor hs_in_desc = {
453 .bLength = USB_DT_ENDPOINT_SIZE,
454 .bDescriptorType = USB_DT_ENDPOINT,
455
456 .bmAttributes = USB_ENDPOINT_XFER_BULK,
457 .wMaxPacketSize = __constant_cpu_to_le16(512),
458};
459
460static struct usb_endpoint_descriptor hs_out_desc = {
461 .bLength = USB_DT_ENDPOINT_SIZE,
462 .bDescriptorType = USB_DT_ENDPOINT,
463
464 .bmAttributes = USB_ENDPOINT_XFER_BULK,
465 .wMaxPacketSize = __constant_cpu_to_le16(512),
466};
467
468static struct usb_endpoint_descriptor hs_int_desc = {
469 .bLength = USB_DT_ENDPOINT_SIZE,
470 .bDescriptorType = USB_DT_ENDPOINT,
471
472 .bmAttributes = USB_ENDPOINT_XFER_INT,
473 .wMaxPacketSize = __constant_cpu_to_le16(16),
474
475 .bInterval = 0x9,
476};
477
c5279377
ŁM		 478/*
479 * This attribute vendor descriptor is necessary for correct operation with
480 * Windows version of THOR download program
481 *
482 * It prevents windows driver from sending zero lenght packet (ZLP) after
483 * each THOR_PACKET_SIZE. This assures consistent behaviour with libusb
484 */
485static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = {
486 .bLength = sizeof(thor_downloader_cdc_av),
487 .bDescriptorType = 0x24,
488 .bDescriptorSubType = 0x80,
489 .DAUType = 0x0002,
490 .DAULength = 0x0001,
491 .DAUValue = 0x00,
492};
493
494static const struct usb_descriptor_header *hs_thor_downloader_function[] = {
495 (struct usb_descriptor_header *)&thor_iad_descriptor,
496
497 (struct usb_descriptor_header *)&thor_downloader_intf_int,
498 (struct usb_descriptor_header *)&thor_downloader_cdc_header,
499 (struct usb_descriptor_header *)&thor_downloader_cdc_call,
500 (struct usb_descriptor_header *)&thor_downloader_cdc_abstract,
501 (struct usb_descriptor_header *)&thor_downloader_cdc_union,
502 (struct usb_descriptor_header *)&hs_int_desc,
503
504 (struct usb_descriptor_header *)&thor_downloader_intf_data,
505 (struct usb_descriptor_header *)&thor_downloader_cdc_av,
506 (struct usb_descriptor_header *)&hs_in_desc,
507 (struct usb_descriptor_header *)&hs_out_desc,
508 NULL,
509};
510
511/*-------------------------------------------------------------------------*/
512static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
513{
514 struct usb_request *req;
515
516 req = usb_ep_alloc_request(ep, 0);
517 if (!req)
518 return req;
519
520 req->length = length;
521 req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length);
522 if (!req->buf) {
523 usb_ep_free_request(ep, req);
524 req = NULL;
525 }
526
527 return req;
528}
529
530static int thor_rx_data(void)
531{
532 struct thor_dev *dev = thor_func->dev;
533 int data_to_rx, tmp, status;
534
535 data_to_rx = dev->out_req->length;
536 tmp = data_to_rx;
537 do {
538 dev->out_req->length = data_to_rx;
539 debug("dev->out_req->length:%d dev->rxdata:%d\n",
540 dev->out_req->length, dev->rxdata);
541
542 status = usb_ep_queue(dev->out_ep, dev->out_req, 0);
543 if (status) {
544 error("kill %s: resubmit %d bytes --> %d",
545 dev->out_ep->name, dev->out_req->length, status);
546 usb_ep_set_halt(dev->out_ep);
547 return -EAGAIN;
548 }
549
550 while (!dev->rxdata) {
2d48aa69 551 usb_gadget_handle_interrupts(0);
c5279377
ŁM		 552 if (ctrlc())
553 return -1;
554 }
555 dev->rxdata = 0;
556 data_to_rx -= dev->out_req->actual;
557 } while (data_to_rx);
558
559 return tmp;
560}
561
562static void thor_tx_data(unsigned char *data, int len)
563{
564 struct thor_dev *dev = thor_func->dev;
565 unsigned char *ptr = dev->in_req->buf;
566 int status;
567
568 memset(ptr, 0, len);
569 memcpy(ptr, data, len);
570
571 dev->in_req->length = len;
572
32191755 573 debug("%s: dev->in_req->length:%d to_cpy:%zd\n", __func__,
c5279377
ŁM		 574 dev->in_req->length, sizeof(data));
575
576 status = usb_ep_queue(dev->in_ep, dev->in_req, 0);
577 if (status) {
578 error("kill %s: resubmit %d bytes --> %d",
579 dev->in_ep->name, dev->in_req->length, status);
580 usb_ep_set_halt(dev->in_ep);
581 }
582
583 /* Wait until tx interrupt received */
584 while (!dev->txdata)
2d48aa69 585 usb_gadget_handle_interrupts(0);
c5279377
ŁM		 586
587 dev->txdata = 0;
588}
589
590static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req)
591{
592 struct thor_dev *dev = thor_func->dev;
593 int status = req->status;
594
595 debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req);
596 switch (status) {
597 case 0:
598 if (ep == dev->out_ep)
599 dev->rxdata = 1;
600 else
601 dev->txdata = 1;
602
603 break;
604
605 /* this endpoint is normally active while we're configured */
606 case -ECONNABORTED: /* hardware forced ep reset */
607 case -ECONNRESET: /* request dequeued */
608 case -ESHUTDOWN: /* disconnect from host */
609 case -EREMOTEIO: /* short read */
610 case -EOVERFLOW:
611 error("ERROR:%d", status);
612 break;
613 }
614
615 debug("%s complete --> %d, %d/%d\n", ep->name,
616 status, req->actual, req->length);
617}
618
619static struct usb_request *thor_start_ep(struct usb_ep *ep)
620{
621 struct usb_request *req;
622
84c13e6f 623 req = alloc_ep_req(ep, THOR_PACKET_SIZE);
c5279377
ŁM		 624 debug("%s: ep:%p req:%p\n", __func__, ep, req);
625
626 if (!req)
627 return NULL;
628
629 memset(req->buf, 0, req->length);
630 req->complete = thor_rx_tx_complete;
631
c5279377
ŁM		 632 return req;
633}
634
635static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req)
636{
637 if (req->status || req->actual != req->length)
638 debug("setup complete --> %d, %d/%d\n",
639 req->status, req->actual, req->length);
640}
641
642static int
643thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
644{
645 struct thor_dev *dev = thor_func->dev;
646 struct usb_request *req = dev->req;
647 struct usb_gadget *gadget = dev->gadget;
648 int value = 0;
649
650 u16 len = le16_to_cpu(ctrl->wLength);
651
652 debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n",
653 ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex,
654 ctrl->wLength);
655
656 switch (ctrl->bRequest) {
657 case USB_CDC_REQ_SET_CONTROL_LINE_STATE:
658 value = 0;
659 break;
660 case USB_CDC_REQ_SET_LINE_CODING:
661 value = len;
662 /* Line Coding set done = configuration done */
663 thor_func->dev->configuration_done = 1;
664 break;
665
666 default:
667 error("thor_setup: unknown request: %d", ctrl->bRequest);
668 }
669
670 if (value >= 0) {
671 req->length = value;
672 req->zero = value < len;
673 value = usb_ep_queue(gadget->ep0, req, 0);
674 if (value < 0) {
675 debug("%s: ep_queue: %d\n", __func__, value);
676 req->status = 0;
677 }
678 }
679
680 return value;
681}
682
683/* Specific to the THOR protocol */
684static void thor_set_dma(void *addr, int len)
685{
686 struct thor_dev *dev = thor_func->dev;
687
688 debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req);
689 debug("addr:%p, len:%d\n", addr, len);
690
691 dev->out_req->buf = addr;
692 dev->out_req->length = len;
693}
694
695int thor_init(void)
696{
697 struct thor_dev *dev = thor_func->dev;
698
699 /* Wait for a device enumeration and configuration settings */
700 debug("THOR enumeration/configuration setting....\n");
701 while (!dev->configuration_done)
2d48aa69 702 usb_gadget_handle_interrupts(0);
c5279377
ŁM		 703
704 thor_set_dma(thor_rx_data_buf, strlen("THOR"));
705 /* detect the download request from Host PC */
706 if (thor_rx_data() < 0) {
707 printf("%s: Data not received!\n", __func__);
708 return -1;
709 }
710
711 if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) {
712 puts("Download request from the Host PC\n");
713 udelay(30 * 1000); /* 30 ms */
714
715 strcpy((char *)thor_tx_data_buf, "ROHT");
716 thor_tx_data(thor_tx_data_buf, strlen("ROHT"));
717 } else {
718 puts("Wrong reply information\n");
719 return -1;
720 }
721
722 return 0;
723}
724
725int thor_handle(void)
726{
727 int ret;
728
729 /* receive the data from Host PC */
730 while (1) {
731 thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box));
732 ret = thor_rx_data();
733
734 if (ret > 0) {
735 ret = process_data();
41d237de
SDPP		 736#ifdef CONFIG_THOR_RESET_OFF
737 if (ret == RESET_DONE)
738 break;
739#endif
c5279377
ŁM		 740 if (ret < 0)
741 return ret;
742 } else {
743 printf("%s: No data received!\n", __func__);
744 break;
745 }
746 }
747
748 return 0;
749}
750
751static int thor_func_bind(struct usb_configuration *c, struct usb_function *f)
752{
753 struct usb_gadget *gadget = c->cdev->gadget;
754 struct f_thor *f_thor = func_to_thor(f);
755 struct thor_dev *dev;
756 struct usb_ep *ep;
757 int status;
758
759 thor_func = f_thor;
760 dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev));
761 if (!dev)
762 return -ENOMEM;
763
764 memset(dev, 0, sizeof(*dev));
765 dev->gadget = gadget;
766 f_thor->dev = dev;
767
768 debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n",
769 __func__, c, f);
770 debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev);
771
772 /* EP0 */
773 /* preallocate control response and buffer */
774 dev->req = usb_ep_alloc_request(gadget->ep0, 0);
775 if (!dev->req) {
776 status = -ENOMEM;
777 goto fail;
778 }
779 dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
58f99df4 780 THOR_PACKET_SIZE);
c5279377
ŁM		 781 if (!dev->req->buf) {
782 status = -ENOMEM;
783 goto fail;
784 }
785
786 dev->req->complete = thor_setup_complete;
787
788 /* DYNAMIC interface numbers assignments */
789 status = usb_interface_id(c, f);
790
791 if (status < 0)
792 goto fail;
793
794 thor_downloader_intf_int.bInterfaceNumber = status;
795 thor_downloader_cdc_union.bMasterInterface0 = status;
796
797 status = usb_interface_id(c, f);
798
799 if (status < 0)
800 goto fail;
801
802 thor_downloader_intf_data.bInterfaceNumber = status;
803 thor_downloader_cdc_union.bSlaveInterface0 = status;
804
805 /* allocate instance-specific endpoints */
806 ep = usb_ep_autoconfig(gadget, &fs_in_desc);
807 if (!ep) {
808 status = -ENODEV;
809 goto fail;
810 }
811
812 if (gadget_is_dualspeed(gadget)) {
813 hs_in_desc.bEndpointAddress =
814 fs_in_desc.bEndpointAddress;
815 }
816
817 dev->in_ep = ep; /* Store IN EP for enabling @ setup */
7704fdbd 818 ep->driver_data = dev;
c5279377
ŁM		 819
820 ep = usb_ep_autoconfig(gadget, &fs_out_desc);
821 if (!ep) {
822 status = -ENODEV;
823 goto fail;
824 }
825
826 if (gadget_is_dualspeed(gadget))
827 hs_out_desc.bEndpointAddress =
828 fs_out_desc.bEndpointAddress;
829
830 dev->out_ep = ep; /* Store OUT EP for enabling @ setup */
7704fdbd 831 ep->driver_data = dev;
c5279377
ŁM		 832
833 ep = usb_ep_autoconfig(gadget, &fs_int_desc);
834 if (!ep) {
835 status = -ENODEV;
836 goto fail;
837 }
838
839 dev->int_ep = ep;
7704fdbd 840 ep->driver_data = dev;
c5279377
ŁM		 841
842 if (gadget_is_dualspeed(gadget)) {
843 hs_int_desc.bEndpointAddress =
844 fs_int_desc.bEndpointAddress;
845
846 f->hs_descriptors = (struct usb_descriptor_header **)
847 &hs_thor_downloader_function;
848
849 if (!f->hs_descriptors)
850 goto fail;
851 }
852
853 debug("%s: out_ep:%p out_req:%p\n", __func__,
854 dev->out_ep, dev->out_req);
855
856 return 0;
857
858 fail:
859 free(dev);
860 return status;
861}
862
863static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
864{
865 free(req->buf);
866 usb_ep_free_request(ep, req);
867}
868
869static void thor_unbind(struct usb_configuration *c, struct usb_function *f)
870{
871 struct f_thor *f_thor = func_to_thor(f);
872 struct thor_dev *dev = f_thor->dev;
873
874 free(dev);
875 memset(thor_func, 0, sizeof(*thor_func));
876 thor_func = NULL;
877}
878
879static void thor_func_disable(struct usb_function *f)
880{
881 struct f_thor *f_thor = func_to_thor(f);
882 struct thor_dev *dev = f_thor->dev;
883
884 debug("%s:\n", __func__);
885
886 /* Avoid freeing memory when ep is still claimed */
887 if (dev->in_ep->driver_data) {
888 free_ep_req(dev->in_ep, dev->in_req);
889 usb_ep_disable(dev->in_ep);
890 dev->in_ep->driver_data = NULL;
891 }
892
893 if (dev->out_ep->driver_data) {
bab0146e 894 free(dev->out_req->buf);
c5279377
ŁM		 895 dev->out_req->buf = NULL;
896 usb_ep_free_request(dev->out_ep, dev->out_req);
897 usb_ep_disable(dev->out_ep);
898 dev->out_ep->driver_data = NULL;
899 }
900
901 if (dev->int_ep->driver_data) {
902 usb_ep_disable(dev->int_ep);
903 dev->int_ep->driver_data = NULL;
904 }
905}
906
907static int thor_eps_setup(struct usb_function *f)
908{
909 struct usb_composite_dev *cdev = f->config->cdev;
910 struct usb_gadget *gadget = cdev->gadget;
911 struct thor_dev *dev = thor_func->dev;
912 struct usb_endpoint_descriptor *d;
913 struct usb_request *req;
914 struct usb_ep *ep;
915 int result;
916
917 ep = dev->in_ep;
918 d = ep_desc(gadget, &hs_in_desc, &fs_in_desc);
919 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
920
921 result = usb_ep_enable(ep, d);
922 if (result)
923 goto exit;
924
925 ep->driver_data = cdev; /* claim */
926 req = thor_start_ep(ep);
927 if (!req) {
928 usb_ep_disable(ep);
929 result = -EIO;
930 goto exit;
931 }
932
933 dev->in_req = req;
934 ep = dev->out_ep;
935 d = ep_desc(gadget, &hs_out_desc, &fs_out_desc);
936 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
937
938 result = usb_ep_enable(ep, d);
939 if (result)
940 goto exit;
941
942 ep->driver_data = cdev; /* claim */
943 req = thor_start_ep(ep);
944 if (!req) {
945 usb_ep_disable(ep);
946 result = -EIO;
947 goto exit;
948 }
949
950 dev->out_req = req;
951 /* ACM control EP */
952 ep = dev->int_ep;
953 ep->driver_data = cdev; /* claim */
954
955 exit:
956 return result;
957}
958
959static int thor_func_set_alt(struct usb_function *f,
960 unsigned intf, unsigned alt)
961{
962 struct thor_dev *dev = thor_func->dev;
963 int result;
964
965 debug("%s: func: %s intf: %d alt: %d\n",
966 __func__, f->name, intf, alt);
967
968 switch (intf) {
969 case 0:
970 debug("ACM INTR interface\n");
971 break;
972 case 1:
973 debug("Communication Data interface\n");
974 result = thor_eps_setup(f);
975 if (result)
976 error("%s: EPs setup failed!", __func__);
977 dev->configuration_done = 1;
978 break;
979 }
980
981 return 0;
982}
983
984static int thor_func_init(struct usb_configuration *c)
985{
986 struct f_thor *f_thor;
987 int status;
988
989 debug("%s: cdev: 0x%p\n", __func__, c->cdev);
990
991 f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor));
992 if (!f_thor)
993 return -ENOMEM;
994
995 memset(f_thor, 0, sizeof(*f_thor));
996
997 f_thor->usb_function.name = "f_thor";
998 f_thor->usb_function.bind = thor_func_bind;
999 f_thor->usb_function.unbind = thor_unbind;
1000 f_thor->usb_function.setup = thor_func_setup;
1001 f_thor->usb_function.set_alt = thor_func_set_alt;
1002 f_thor->usb_function.disable = thor_func_disable;
1003
1004 status = usb_add_function(c, &f_thor->usb_function);
1005 if (status)
1006 free(f_thor);
1007
1008 return status;
1009}
1010
1011int thor_add(struct usb_configuration *c)
1012{
1013 debug("%s:\n", __func__);
1014 return thor_func_init(c);
1015}
c4d0e856
MZ		 1016
1017DECLARE_GADGET_BIND_CALLBACK(usb_dnl_thor, thor_add);
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