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