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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 | ||
31 | static void thor_tx_data(unsigned char *data, int len); | |
32 | static void thor_set_dma(void *addr, int len); | |
33 | static int thor_rx_data(void); | |
34 | ||
35 | static struct f_thor *thor_func; | |
36 | static inline struct f_thor *func_to_thor(struct usb_function *f) | |
37 | { | |
38 | return container_of(f, struct f_thor, usb_function); | |
39 | } | |
40 | ||
41 | DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_tx_data_buf, | |
42 | sizeof(struct rsp_box)); | |
43 | DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_rx_data_buf, | |
44 | sizeof(struct rqt_box)); | |
45 | ||
46 | /* ********************************************************** */ | |
47 | /* THOR protocol - transmission handling */ | |
48 | /* ********************************************************** */ | |
49 | DEFINE_CACHE_ALIGN_BUFFER(char, f_name, F_NAME_BUF_SIZE); | |
50 | static unsigned long long int thor_file_size; | |
51 | static int alt_setting_num; | |
52 | ||
53 | static 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 | ||
61 | static 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 | ||
75 | static 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 | ||
112 | static 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 | ||
139 | static 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 | ||
205 | static int download_tail(long long int left, int cnt) | |
206 | { | |
adfc17bf | 207 | struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num); |
c5279377 ŁM |
208 | void *transfer_buffer = dfu_get_buf(); |
209 | int ret; | |
210 | ||
211 | debug("%s: left: %llu cnt: %d\n", __func__, left, cnt); | |
212 | ||
213 | if (left) { | |
adfc17bf | 214 | ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++); |
c5279377 ŁM |
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 | */ | |
adfc17bf | 228 | ret = dfu_write(dfu_entity, transfer_buffer, 0, cnt); |
c5279377 ŁM |
229 | if (ret) |
230 | error("DFU write failed [%d] cnt: %d", ret, cnt); | |
231 | ||
fd2a89b2 PM |
232 | ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt); |
233 | if (ret) { | |
234 | error("DFU flush failed!"); | |
235 | return ret; | |
236 | } | |
237 | ||
c5279377 ŁM |
238 | return ret; |
239 | } | |
240 | ||
241 | static long long int process_rqt_download(const struct rqt_box *rqt) | |
242 | { | |
243 | ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box)); | |
244 | static long long int left, ret_head; | |
245 | int file_type, ret = 0; | |
246 | static int cnt; | |
247 | ||
248 | memset(rsp, 0, sizeof(struct rsp_box)); | |
249 | rsp->rsp = rqt->rqt; | |
250 | rsp->rsp_data = rqt->rqt_data; | |
251 | ||
252 | switch (rqt->rqt_data) { | |
253 | case RQT_DL_INIT: | |
254 | thor_file_size = rqt->int_data[0]; | |
255 | debug("INIT: total %d bytes\n", rqt->int_data[0]); | |
256 | break; | |
257 | case RQT_DL_FILE_INFO: | |
258 | file_type = rqt->int_data[0]; | |
259 | if (file_type == FILE_TYPE_PIT) { | |
260 | puts("PIT table file - not supported\n"); | |
261 | rsp->ack = -ENOTSUPP; | |
262 | ret = rsp->ack; | |
263 | break; | |
264 | } | |
265 | ||
266 | thor_file_size = rqt->int_data[1]; | |
267 | memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE); | |
268 | ||
269 | debug("INFO: name(%s, %d), size(%llu), type(%d)\n", | |
270 | f_name, 0, thor_file_size, file_type); | |
271 | ||
272 | rsp->int_data[0] = THOR_PACKET_SIZE; | |
273 | ||
274 | alt_setting_num = dfu_get_alt(f_name); | |
275 | if (alt_setting_num < 0) { | |
276 | error("Alt setting [%d] to write not found!", | |
277 | alt_setting_num); | |
278 | rsp->ack = -ENODEV; | |
279 | ret = rsp->ack; | |
280 | } | |
281 | break; | |
282 | case RQT_DL_FILE_START: | |
283 | send_rsp(rsp); | |
284 | ret_head = download_head(thor_file_size, THOR_PACKET_SIZE, | |
285 | &left, &cnt); | |
286 | if (ret_head < 0) { | |
287 | left = 0; | |
288 | cnt = 0; | |
289 | } | |
290 | return ret_head; | |
291 | case RQT_DL_FILE_END: | |
292 | debug("DL FILE_END\n"); | |
293 | rsp->ack = download_tail(left, cnt); | |
294 | ret = rsp->ack; | |
295 | left = 0; | |
296 | cnt = 0; | |
297 | break; | |
298 | case RQT_DL_EXIT: | |
299 | debug("DL EXIT\n"); | |
300 | break; | |
301 | default: | |
302 | error("Operation not supported: %d", rqt->rqt_data); | |
303 | ret = -ENOTSUPP; | |
304 | } | |
305 | ||
306 | send_rsp(rsp); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | static int process_data(void) | |
311 | { | |
312 | ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box)); | |
313 | int ret = -EINVAL; | |
314 | ||
315 | memset(rqt, 0, sizeof(rqt)); | |
316 | memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box)); | |
317 | ||
318 | debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data); | |
319 | ||
320 | switch (rqt->rqt) { | |
321 | case RQT_INFO: | |
322 | ret = process_rqt_info(rqt); | |
323 | break; | |
324 | case RQT_CMD: | |
325 | ret = process_rqt_cmd(rqt); | |
326 | break; | |
327 | case RQT_DL: | |
328 | ret = (int) process_rqt_download(rqt); | |
329 | break; | |
330 | case RQT_UL: | |
331 | puts("RQT: UPLOAD not supported!\n"); | |
332 | break; | |
333 | default: | |
334 | error("unknown request (%d)", rqt->rqt); | |
335 | } | |
336 | ||
337 | return ret; | |
338 | } | |
339 | ||
340 | /* ********************************************************** */ | |
341 | /* THOR USB Function */ | |
342 | /* ********************************************************** */ | |
343 | ||
344 | static inline struct usb_endpoint_descriptor * | |
345 | ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, | |
346 | struct usb_endpoint_descriptor *fs) | |
347 | { | |
348 | if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) | |
349 | return hs; | |
350 | return fs; | |
351 | } | |
352 | ||
353 | static struct usb_interface_descriptor thor_downloader_intf_data = { | |
354 | .bLength = sizeof(thor_downloader_intf_data), | |
355 | .bDescriptorType = USB_DT_INTERFACE, | |
356 | ||
357 | .bNumEndpoints = 2, | |
358 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
359 | }; | |
360 | ||
361 | static struct usb_endpoint_descriptor fs_in_desc = { | |
362 | .bLength = USB_DT_ENDPOINT_SIZE, | |
363 | .bDescriptorType = USB_DT_ENDPOINT, | |
364 | ||
365 | .bEndpointAddress = USB_DIR_IN, | |
366 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
367 | }; | |
368 | ||
369 | static struct usb_endpoint_descriptor fs_out_desc = { | |
370 | .bLength = USB_DT_ENDPOINT_SIZE, | |
371 | .bDescriptorType = USB_DT_ENDPOINT, | |
372 | ||
373 | .bEndpointAddress = USB_DIR_OUT, | |
374 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
375 | }; | |
376 | ||
377 | /* CDC configuration */ | |
378 | static struct usb_interface_descriptor thor_downloader_intf_int = { | |
379 | .bLength = sizeof(thor_downloader_intf_int), | |
380 | .bDescriptorType = USB_DT_INTERFACE, | |
381 | ||
382 | .bNumEndpoints = 1, | |
383 | .bInterfaceClass = USB_CLASS_COMM, | |
384 | /* 0x02 Abstract Line Control Model */ | |
385 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, | |
386 | /* 0x01 Common AT commands */ | |
387 | .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, | |
388 | }; | |
389 | ||
390 | static struct usb_cdc_header_desc thor_downloader_cdc_header = { | |
391 | .bLength = sizeof(thor_downloader_cdc_header), | |
392 | .bDescriptorType = 0x24, /* CS_INTERFACE */ | |
393 | .bDescriptorSubType = 0x00, | |
394 | .bcdCDC = 0x0110, | |
395 | }; | |
396 | ||
397 | static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = { | |
398 | .bLength = sizeof(thor_downloader_cdc_call), | |
399 | .bDescriptorType = 0x24, /* CS_INTERFACE */ | |
400 | .bDescriptorSubType = 0x01, | |
401 | .bmCapabilities = 0x00, | |
402 | .bDataInterface = 0x01, | |
403 | }; | |
404 | ||
405 | static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = { | |
406 | .bLength = sizeof(thor_downloader_cdc_abstract), | |
407 | .bDescriptorType = 0x24, /* CS_INTERFACE */ | |
408 | .bDescriptorSubType = 0x02, | |
409 | .bmCapabilities = 0x00, | |
410 | }; | |
411 | ||
412 | static struct usb_cdc_union_desc thor_downloader_cdc_union = { | |
413 | .bLength = sizeof(thor_downloader_cdc_union), | |
414 | .bDescriptorType = 0x24, /* CS_INTERFACE */ | |
415 | .bDescriptorSubType = USB_CDC_UNION_TYPE, | |
416 | }; | |
417 | ||
418 | static struct usb_endpoint_descriptor fs_int_desc = { | |
419 | .bLength = USB_DT_ENDPOINT_SIZE, | |
420 | .bDescriptorType = USB_DT_ENDPOINT, | |
421 | ||
422 | .bEndpointAddress = 3 | USB_DIR_IN, | |
423 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
424 | .wMaxPacketSize = __constant_cpu_to_le16(16), | |
425 | ||
426 | .bInterval = 0x9, | |
427 | }; | |
428 | ||
429 | static struct usb_interface_assoc_descriptor | |
430 | thor_iad_descriptor = { | |
431 | .bLength = sizeof(thor_iad_descriptor), | |
432 | .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, | |
433 | ||
434 | .bFirstInterface = 0, | |
435 | .bInterfaceCount = 2, /* control + data */ | |
436 | .bFunctionClass = USB_CLASS_COMM, | |
437 | .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, | |
438 | .bFunctionProtocol = USB_CDC_PROTO_NONE, | |
439 | }; | |
440 | ||
441 | static struct usb_endpoint_descriptor hs_in_desc = { | |
442 | .bLength = USB_DT_ENDPOINT_SIZE, | |
443 | .bDescriptorType = USB_DT_ENDPOINT, | |
444 | ||
445 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
446 | .wMaxPacketSize = __constant_cpu_to_le16(512), | |
447 | }; | |
448 | ||
449 | static struct usb_endpoint_descriptor hs_out_desc = { | |
450 | .bLength = USB_DT_ENDPOINT_SIZE, | |
451 | .bDescriptorType = USB_DT_ENDPOINT, | |
452 | ||
453 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
454 | .wMaxPacketSize = __constant_cpu_to_le16(512), | |
455 | }; | |
456 | ||
457 | static struct usb_endpoint_descriptor hs_int_desc = { | |
458 | .bLength = USB_DT_ENDPOINT_SIZE, | |
459 | .bDescriptorType = USB_DT_ENDPOINT, | |
460 | ||
461 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
462 | .wMaxPacketSize = __constant_cpu_to_le16(16), | |
463 | ||
464 | .bInterval = 0x9, | |
465 | }; | |
466 | ||
467 | static struct usb_qualifier_descriptor dev_qualifier = { | |
468 | .bLength = sizeof(dev_qualifier), | |
469 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, | |
470 | ||
471 | .bcdUSB = __constant_cpu_to_le16(0x0200), | |
472 | .bDeviceClass = USB_CLASS_VENDOR_SPEC, | |
473 | ||
474 | .bNumConfigurations = 2, | |
475 | }; | |
476 | ||
477 | /* | |
478 | * This attribute vendor descriptor is necessary for correct operation with | |
479 | * Windows version of THOR download program | |
480 | * | |
481 | * It prevents windows driver from sending zero lenght packet (ZLP) after | |
482 | * each THOR_PACKET_SIZE. This assures consistent behaviour with libusb | |
483 | */ | |
484 | static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = { | |
485 | .bLength = sizeof(thor_downloader_cdc_av), | |
486 | .bDescriptorType = 0x24, | |
487 | .bDescriptorSubType = 0x80, | |
488 | .DAUType = 0x0002, | |
489 | .DAULength = 0x0001, | |
490 | .DAUValue = 0x00, | |
491 | }; | |
492 | ||
493 | static const struct usb_descriptor_header *hs_thor_downloader_function[] = { | |
494 | (struct usb_descriptor_header *)&thor_iad_descriptor, | |
495 | ||
496 | (struct usb_descriptor_header *)&thor_downloader_intf_int, | |
497 | (struct usb_descriptor_header *)&thor_downloader_cdc_header, | |
498 | (struct usb_descriptor_header *)&thor_downloader_cdc_call, | |
499 | (struct usb_descriptor_header *)&thor_downloader_cdc_abstract, | |
500 | (struct usb_descriptor_header *)&thor_downloader_cdc_union, | |
501 | (struct usb_descriptor_header *)&hs_int_desc, | |
502 | ||
503 | (struct usb_descriptor_header *)&thor_downloader_intf_data, | |
504 | (struct usb_descriptor_header *)&thor_downloader_cdc_av, | |
505 | (struct usb_descriptor_header *)&hs_in_desc, | |
506 | (struct usb_descriptor_header *)&hs_out_desc, | |
507 | NULL, | |
508 | }; | |
509 | ||
510 | /*-------------------------------------------------------------------------*/ | |
511 | static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) | |
512 | { | |
513 | struct usb_request *req; | |
514 | ||
515 | req = usb_ep_alloc_request(ep, 0); | |
516 | if (!req) | |
517 | return req; | |
518 | ||
519 | req->length = length; | |
520 | req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length); | |
521 | if (!req->buf) { | |
522 | usb_ep_free_request(ep, req); | |
523 | req = NULL; | |
524 | } | |
525 | ||
526 | return req; | |
527 | } | |
528 | ||
529 | static int thor_rx_data(void) | |
530 | { | |
531 | struct thor_dev *dev = thor_func->dev; | |
532 | int data_to_rx, tmp, status; | |
533 | ||
534 | data_to_rx = dev->out_req->length; | |
535 | tmp = data_to_rx; | |
536 | do { | |
537 | dev->out_req->length = data_to_rx; | |
538 | debug("dev->out_req->length:%d dev->rxdata:%d\n", | |
539 | dev->out_req->length, dev->rxdata); | |
540 | ||
541 | status = usb_ep_queue(dev->out_ep, dev->out_req, 0); | |
542 | if (status) { | |
543 | error("kill %s: resubmit %d bytes --> %d", | |
544 | dev->out_ep->name, dev->out_req->length, status); | |
545 | usb_ep_set_halt(dev->out_ep); | |
546 | return -EAGAIN; | |
547 | } | |
548 | ||
549 | while (!dev->rxdata) { | |
550 | usb_gadget_handle_interrupts(); | |
551 | if (ctrlc()) | |
552 | return -1; | |
553 | } | |
554 | dev->rxdata = 0; | |
555 | data_to_rx -= dev->out_req->actual; | |
556 | } while (data_to_rx); | |
557 | ||
558 | return tmp; | |
559 | } | |
560 | ||
561 | static void thor_tx_data(unsigned char *data, int len) | |
562 | { | |
563 | struct thor_dev *dev = thor_func->dev; | |
564 | unsigned char *ptr = dev->in_req->buf; | |
565 | int status; | |
566 | ||
567 | memset(ptr, 0, len); | |
568 | memcpy(ptr, data, len); | |
569 | ||
570 | dev->in_req->length = len; | |
571 | ||
572 | debug("%s: dev->in_req->length:%d to_cpy:%d\n", __func__, | |
573 | dev->in_req->length, sizeof(data)); | |
574 | ||
575 | status = usb_ep_queue(dev->in_ep, dev->in_req, 0); | |
576 | if (status) { | |
577 | error("kill %s: resubmit %d bytes --> %d", | |
578 | dev->in_ep->name, dev->in_req->length, status); | |
579 | usb_ep_set_halt(dev->in_ep); | |
580 | } | |
581 | ||
582 | /* Wait until tx interrupt received */ | |
583 | while (!dev->txdata) | |
584 | usb_gadget_handle_interrupts(); | |
585 | ||
586 | dev->txdata = 0; | |
587 | } | |
588 | ||
589 | static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req) | |
590 | { | |
591 | struct thor_dev *dev = thor_func->dev; | |
592 | int status = req->status; | |
593 | ||
594 | debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req); | |
595 | switch (status) { | |
596 | case 0: | |
597 | if (ep == dev->out_ep) | |
598 | dev->rxdata = 1; | |
599 | else | |
600 | dev->txdata = 1; | |
601 | ||
602 | break; | |
603 | ||
604 | /* this endpoint is normally active while we're configured */ | |
605 | case -ECONNABORTED: /* hardware forced ep reset */ | |
606 | case -ECONNRESET: /* request dequeued */ | |
607 | case -ESHUTDOWN: /* disconnect from host */ | |
608 | case -EREMOTEIO: /* short read */ | |
609 | case -EOVERFLOW: | |
610 | error("ERROR:%d", status); | |
611 | break; | |
612 | } | |
613 | ||
614 | debug("%s complete --> %d, %d/%d\n", ep->name, | |
615 | status, req->actual, req->length); | |
616 | } | |
617 | ||
618 | static struct usb_request *thor_start_ep(struct usb_ep *ep) | |
619 | { | |
620 | struct usb_request *req; | |
621 | ||
84c13e6f | 622 | req = alloc_ep_req(ep, THOR_PACKET_SIZE); |
c5279377 ŁM |
623 | debug("%s: ep:%p req:%p\n", __func__, ep, req); |
624 | ||
625 | if (!req) | |
626 | return NULL; | |
627 | ||
628 | memset(req->buf, 0, req->length); | |
629 | req->complete = thor_rx_tx_complete; | |
630 | ||
c5279377 ŁM |
631 | return req; |
632 | } | |
633 | ||
634 | static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req) | |
635 | { | |
636 | if (req->status || req->actual != req->length) | |
637 | debug("setup complete --> %d, %d/%d\n", | |
638 | req->status, req->actual, req->length); | |
639 | } | |
640 | ||
641 | static int | |
642 | thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) | |
643 | { | |
644 | struct thor_dev *dev = thor_func->dev; | |
645 | struct usb_request *req = dev->req; | |
646 | struct usb_gadget *gadget = dev->gadget; | |
647 | int value = 0; | |
648 | ||
649 | u16 len = le16_to_cpu(ctrl->wLength); | |
650 | ||
651 | debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n", | |
652 | ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex, | |
653 | ctrl->wLength); | |
654 | ||
655 | switch (ctrl->bRequest) { | |
656 | case USB_CDC_REQ_SET_CONTROL_LINE_STATE: | |
657 | value = 0; | |
658 | break; | |
659 | case USB_CDC_REQ_SET_LINE_CODING: | |
660 | value = len; | |
661 | /* Line Coding set done = configuration done */ | |
662 | thor_func->dev->configuration_done = 1; | |
663 | break; | |
664 | ||
665 | default: | |
666 | error("thor_setup: unknown request: %d", ctrl->bRequest); | |
667 | } | |
668 | ||
669 | if (value >= 0) { | |
670 | req->length = value; | |
671 | req->zero = value < len; | |
672 | value = usb_ep_queue(gadget->ep0, req, 0); | |
673 | if (value < 0) { | |
674 | debug("%s: ep_queue: %d\n", __func__, value); | |
675 | req->status = 0; | |
676 | } | |
677 | } | |
678 | ||
679 | return value; | |
680 | } | |
681 | ||
682 | /* Specific to the THOR protocol */ | |
683 | static void thor_set_dma(void *addr, int len) | |
684 | { | |
685 | struct thor_dev *dev = thor_func->dev; | |
686 | ||
687 | debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req); | |
688 | debug("addr:%p, len:%d\n", addr, len); | |
689 | ||
690 | dev->out_req->buf = addr; | |
691 | dev->out_req->length = len; | |
692 | } | |
693 | ||
694 | int thor_init(void) | |
695 | { | |
696 | struct thor_dev *dev = thor_func->dev; | |
697 | ||
698 | /* Wait for a device enumeration and configuration settings */ | |
699 | debug("THOR enumeration/configuration setting....\n"); | |
700 | while (!dev->configuration_done) | |
701 | usb_gadget_handle_interrupts(); | |
702 | ||
703 | thor_set_dma(thor_rx_data_buf, strlen("THOR")); | |
704 | /* detect the download request from Host PC */ | |
705 | if (thor_rx_data() < 0) { | |
706 | printf("%s: Data not received!\n", __func__); | |
707 | return -1; | |
708 | } | |
709 | ||
710 | if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) { | |
711 | puts("Download request from the Host PC\n"); | |
712 | udelay(30 * 1000); /* 30 ms */ | |
713 | ||
714 | strcpy((char *)thor_tx_data_buf, "ROHT"); | |
715 | thor_tx_data(thor_tx_data_buf, strlen("ROHT")); | |
716 | } else { | |
717 | puts("Wrong reply information\n"); | |
718 | return -1; | |
719 | } | |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
724 | int thor_handle(void) | |
725 | { | |
726 | int ret; | |
727 | ||
728 | /* receive the data from Host PC */ | |
729 | while (1) { | |
730 | thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box)); | |
731 | ret = thor_rx_data(); | |
732 | ||
733 | if (ret > 0) { | |
734 | ret = process_data(); | |
735 | if (ret < 0) | |
736 | return ret; | |
737 | } else { | |
738 | printf("%s: No data received!\n", __func__); | |
739 | break; | |
740 | } | |
741 | } | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static int thor_func_bind(struct usb_configuration *c, struct usb_function *f) | |
747 | { | |
748 | struct usb_gadget *gadget = c->cdev->gadget; | |
749 | struct f_thor *f_thor = func_to_thor(f); | |
750 | struct thor_dev *dev; | |
751 | struct usb_ep *ep; | |
752 | int status; | |
753 | ||
754 | thor_func = f_thor; | |
755 | dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev)); | |
756 | if (!dev) | |
757 | return -ENOMEM; | |
758 | ||
759 | memset(dev, 0, sizeof(*dev)); | |
760 | dev->gadget = gadget; | |
761 | f_thor->dev = dev; | |
762 | ||
763 | debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n", | |
764 | __func__, c, f); | |
765 | debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev); | |
766 | ||
767 | /* EP0 */ | |
768 | /* preallocate control response and buffer */ | |
769 | dev->req = usb_ep_alloc_request(gadget->ep0, 0); | |
770 | if (!dev->req) { | |
771 | status = -ENOMEM; | |
772 | goto fail; | |
773 | } | |
774 | dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, | |
775 | gadget->ep0->maxpacket); | |
776 | if (!dev->req->buf) { | |
777 | status = -ENOMEM; | |
778 | goto fail; | |
779 | } | |
780 | ||
781 | dev->req->complete = thor_setup_complete; | |
782 | ||
783 | /* DYNAMIC interface numbers assignments */ | |
784 | status = usb_interface_id(c, f); | |
785 | ||
786 | if (status < 0) | |
787 | goto fail; | |
788 | ||
789 | thor_downloader_intf_int.bInterfaceNumber = status; | |
790 | thor_downloader_cdc_union.bMasterInterface0 = status; | |
791 | ||
792 | status = usb_interface_id(c, f); | |
793 | ||
794 | if (status < 0) | |
795 | goto fail; | |
796 | ||
797 | thor_downloader_intf_data.bInterfaceNumber = status; | |
798 | thor_downloader_cdc_union.bSlaveInterface0 = status; | |
799 | ||
800 | /* allocate instance-specific endpoints */ | |
801 | ep = usb_ep_autoconfig(gadget, &fs_in_desc); | |
802 | if (!ep) { | |
803 | status = -ENODEV; | |
804 | goto fail; | |
805 | } | |
806 | ||
807 | if (gadget_is_dualspeed(gadget)) { | |
808 | hs_in_desc.bEndpointAddress = | |
809 | fs_in_desc.bEndpointAddress; | |
810 | } | |
811 | ||
812 | dev->in_ep = ep; /* Store IN EP for enabling @ setup */ | |
813 | ||
814 | ep = usb_ep_autoconfig(gadget, &fs_out_desc); | |
815 | if (!ep) { | |
816 | status = -ENODEV; | |
817 | goto fail; | |
818 | } | |
819 | ||
820 | if (gadget_is_dualspeed(gadget)) | |
821 | hs_out_desc.bEndpointAddress = | |
822 | fs_out_desc.bEndpointAddress; | |
823 | ||
824 | dev->out_ep = ep; /* Store OUT EP for enabling @ setup */ | |
825 | ||
826 | ep = usb_ep_autoconfig(gadget, &fs_int_desc); | |
827 | if (!ep) { | |
828 | status = -ENODEV; | |
829 | goto fail; | |
830 | } | |
831 | ||
832 | dev->int_ep = ep; | |
833 | ||
834 | if (gadget_is_dualspeed(gadget)) { | |
835 | hs_int_desc.bEndpointAddress = | |
836 | fs_int_desc.bEndpointAddress; | |
837 | ||
838 | f->hs_descriptors = (struct usb_descriptor_header **) | |
839 | &hs_thor_downloader_function; | |
840 | ||
841 | if (!f->hs_descriptors) | |
842 | goto fail; | |
843 | } | |
844 | ||
845 | debug("%s: out_ep:%p out_req:%p\n", __func__, | |
846 | dev->out_ep, dev->out_req); | |
847 | ||
848 | return 0; | |
849 | ||
850 | fail: | |
851 | free(dev); | |
852 | return status; | |
853 | } | |
854 | ||
855 | static void free_ep_req(struct usb_ep *ep, struct usb_request *req) | |
856 | { | |
857 | free(req->buf); | |
858 | usb_ep_free_request(ep, req); | |
859 | } | |
860 | ||
861 | static void thor_unbind(struct usb_configuration *c, struct usb_function *f) | |
862 | { | |
863 | struct f_thor *f_thor = func_to_thor(f); | |
864 | struct thor_dev *dev = f_thor->dev; | |
865 | ||
866 | free(dev); | |
867 | memset(thor_func, 0, sizeof(*thor_func)); | |
868 | thor_func = NULL; | |
869 | } | |
870 | ||
871 | static void thor_func_disable(struct usb_function *f) | |
872 | { | |
873 | struct f_thor *f_thor = func_to_thor(f); | |
874 | struct thor_dev *dev = f_thor->dev; | |
875 | ||
876 | debug("%s:\n", __func__); | |
877 | ||
878 | /* Avoid freeing memory when ep is still claimed */ | |
879 | if (dev->in_ep->driver_data) { | |
880 | free_ep_req(dev->in_ep, dev->in_req); | |
881 | usb_ep_disable(dev->in_ep); | |
882 | dev->in_ep->driver_data = NULL; | |
883 | } | |
884 | ||
885 | if (dev->out_ep->driver_data) { | |
886 | dev->out_req->buf = NULL; | |
887 | usb_ep_free_request(dev->out_ep, dev->out_req); | |
888 | usb_ep_disable(dev->out_ep); | |
889 | dev->out_ep->driver_data = NULL; | |
890 | } | |
891 | ||
892 | if (dev->int_ep->driver_data) { | |
893 | usb_ep_disable(dev->int_ep); | |
894 | dev->int_ep->driver_data = NULL; | |
895 | } | |
896 | } | |
897 | ||
898 | static int thor_eps_setup(struct usb_function *f) | |
899 | { | |
900 | struct usb_composite_dev *cdev = f->config->cdev; | |
901 | struct usb_gadget *gadget = cdev->gadget; | |
902 | struct thor_dev *dev = thor_func->dev; | |
903 | struct usb_endpoint_descriptor *d; | |
904 | struct usb_request *req; | |
905 | struct usb_ep *ep; | |
906 | int result; | |
907 | ||
908 | ep = dev->in_ep; | |
909 | d = ep_desc(gadget, &hs_in_desc, &fs_in_desc); | |
910 | debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); | |
911 | ||
912 | result = usb_ep_enable(ep, d); | |
913 | if (result) | |
914 | goto exit; | |
915 | ||
916 | ep->driver_data = cdev; /* claim */ | |
917 | req = thor_start_ep(ep); | |
918 | if (!req) { | |
919 | usb_ep_disable(ep); | |
920 | result = -EIO; | |
921 | goto exit; | |
922 | } | |
923 | ||
924 | dev->in_req = req; | |
925 | ep = dev->out_ep; | |
926 | d = ep_desc(gadget, &hs_out_desc, &fs_out_desc); | |
927 | debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); | |
928 | ||
929 | result = usb_ep_enable(ep, d); | |
930 | if (result) | |
931 | goto exit; | |
932 | ||
933 | ep->driver_data = cdev; /* claim */ | |
934 | req = thor_start_ep(ep); | |
935 | if (!req) { | |
936 | usb_ep_disable(ep); | |
937 | result = -EIO; | |
938 | goto exit; | |
939 | } | |
940 | ||
941 | dev->out_req = req; | |
942 | /* ACM control EP */ | |
943 | ep = dev->int_ep; | |
944 | ep->driver_data = cdev; /* claim */ | |
945 | ||
946 | exit: | |
947 | return result; | |
948 | } | |
949 | ||
950 | static int thor_func_set_alt(struct usb_function *f, | |
951 | unsigned intf, unsigned alt) | |
952 | { | |
953 | struct thor_dev *dev = thor_func->dev; | |
954 | int result; | |
955 | ||
956 | debug("%s: func: %s intf: %d alt: %d\n", | |
957 | __func__, f->name, intf, alt); | |
958 | ||
959 | switch (intf) { | |
960 | case 0: | |
961 | debug("ACM INTR interface\n"); | |
962 | break; | |
963 | case 1: | |
964 | debug("Communication Data interface\n"); | |
965 | result = thor_eps_setup(f); | |
966 | if (result) | |
967 | error("%s: EPs setup failed!", __func__); | |
968 | dev->configuration_done = 1; | |
969 | break; | |
970 | } | |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
975 | static int thor_func_init(struct usb_configuration *c) | |
976 | { | |
977 | struct f_thor *f_thor; | |
978 | int status; | |
979 | ||
980 | debug("%s: cdev: 0x%p\n", __func__, c->cdev); | |
981 | ||
982 | f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor)); | |
983 | if (!f_thor) | |
984 | return -ENOMEM; | |
985 | ||
986 | memset(f_thor, 0, sizeof(*f_thor)); | |
987 | ||
988 | f_thor->usb_function.name = "f_thor"; | |
989 | f_thor->usb_function.bind = thor_func_bind; | |
990 | f_thor->usb_function.unbind = thor_unbind; | |
991 | f_thor->usb_function.setup = thor_func_setup; | |
992 | f_thor->usb_function.set_alt = thor_func_set_alt; | |
993 | f_thor->usb_function.disable = thor_func_disable; | |
994 | ||
995 | status = usb_add_function(c, &f_thor->usb_function); | |
996 | if (status) | |
997 | free(f_thor); | |
998 | ||
999 | return status; | |
1000 | } | |
1001 | ||
1002 | int thor_add(struct usb_configuration *c) | |
1003 | { | |
1004 | debug("%s:\n", __func__); | |
1005 | return thor_func_init(c); | |
1006 | } | |
c4d0e856 MZ |
1007 | |
1008 | DECLARE_GADGET_BIND_CALLBACK(usb_dnl_thor, thor_add); |