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 { 207 struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num); 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) { 214 ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++); 215 if (ret) { 216 error("DFU write failed [%d]: left: %llu", ret, left); 217 return ret; 218 } 219 } 220 221 /* 222 * To store last "packet" DFU storage backend requires dfu_write with 223 * size parameter equal to 0 224 * 225 * This also frees memory malloc'ed by dfu_get_buf(), so no explicit 226 * need fo call dfu_free_buf() is needed. 227 */ 228 ret = dfu_write(dfu_entity, transfer_buffer, 0, cnt); 229 if (ret) 230 error("DFU write failed [%d] cnt: %d", ret, cnt); 231 232 ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt); 233 if (ret) { 234 error("DFU flush failed!"); 235 return ret; 236 } 237 238 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; 621 622 req = alloc_ep_req(ep, THOR_PACKET_SIZE); 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; 630 631 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 } 1007