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