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 <console.h> 21 #include <malloc.h> 22 #include <memalign.h> 23 #include <version.h> 24 #include <linux/usb/ch9.h> 25 #include <linux/usb/gadget.h> 26 #include <linux/usb/composite.h> 27 #include <linux/usb/cdc.h> 28 #include <g_dnl.h> 29 #include <dfu.h> 30 31 #include "f_thor.h" 32 33 static void thor_tx_data(unsigned char *data, int len); 34 static void thor_set_dma(void *addr, int len); 35 static int thor_rx_data(void); 36 37 static struct f_thor *thor_func; 38 static inline struct f_thor *func_to_thor(struct usb_function *f) 39 { 40 return container_of(f, struct f_thor, usb_function); 41 } 42 43 DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_tx_data_buf, 44 sizeof(struct rsp_box)); 45 DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_rx_data_buf, 46 sizeof(struct rqt_box)); 47 48 /* ********************************************************** */ 49 /* THOR protocol - transmission handling */ 50 /* ********************************************************** */ 51 DEFINE_CACHE_ALIGN_BUFFER(char, f_name, F_NAME_BUF_SIZE + 1); 52 static unsigned long long int thor_file_size; 53 static int alt_setting_num; 54 55 static void send_rsp(const struct rsp_box *rsp) 56 { 57 memcpy(thor_tx_data_buf, rsp, sizeof(struct rsp_box)); 58 thor_tx_data(thor_tx_data_buf, sizeof(struct rsp_box)); 59 60 debug("-RSP: %d, %d\n", rsp->rsp, rsp->rsp_data); 61 } 62 63 static void send_data_rsp(s32 ack, s32 count) 64 { 65 ALLOC_CACHE_ALIGN_BUFFER(struct data_rsp_box, rsp, 66 sizeof(struct data_rsp_box)); 67 68 rsp->ack = ack; 69 rsp->count = count; 70 71 memcpy(thor_tx_data_buf, rsp, sizeof(struct data_rsp_box)); 72 thor_tx_data(thor_tx_data_buf, sizeof(struct data_rsp_box)); 73 74 debug("-DATA RSP: %d, %d\n", ack, count); 75 } 76 77 static int process_rqt_info(const struct rqt_box *rqt) 78 { 79 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box)); 80 memset(rsp, 0, sizeof(struct rsp_box)); 81 82 rsp->rsp = rqt->rqt; 83 rsp->rsp_data = rqt->rqt_data; 84 85 switch (rqt->rqt_data) { 86 case RQT_INFO_VER_PROTOCOL: 87 rsp->int_data[0] = VER_PROTOCOL_MAJOR; 88 rsp->int_data[1] = VER_PROTOCOL_MINOR; 89 break; 90 case RQT_INIT_VER_HW: 91 snprintf(rsp->str_data[0], sizeof(rsp->str_data[0]), 92 "%x", checkboard()); 93 break; 94 case RQT_INIT_VER_BOOT: 95 sprintf(rsp->str_data[0], "%s", U_BOOT_VERSION); 96 break; 97 case RQT_INIT_VER_KERNEL: 98 sprintf(rsp->str_data[0], "%s", "k unknown"); 99 break; 100 case RQT_INIT_VER_PLATFORM: 101 sprintf(rsp->str_data[0], "%s", "p unknown"); 102 break; 103 case RQT_INIT_VER_CSC: 104 sprintf(rsp->str_data[0], "%s", "c unknown"); 105 break; 106 default: 107 return -EINVAL; 108 } 109 110 send_rsp(rsp); 111 return true; 112 } 113 114 static int process_rqt_cmd(const struct rqt_box *rqt) 115 { 116 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box)); 117 memset(rsp, 0, sizeof(struct rsp_box)); 118 119 rsp->rsp = rqt->rqt; 120 rsp->rsp_data = rqt->rqt_data; 121 122 switch (rqt->rqt_data) { 123 case RQT_CMD_REBOOT: 124 debug("TARGET RESET\n"); 125 send_rsp(rsp); 126 g_dnl_unregister(); 127 dfu_free_entities(); 128 #ifdef CONFIG_THOR_RESET_OFF 129 return RESET_DONE; 130 #endif 131 run_command("reset", 0); 132 break; 133 case RQT_CMD_POWEROFF: 134 case RQT_CMD_EFSCLEAR: 135 send_rsp(rsp); 136 default: 137 printf("Command not supported -> cmd: %d\n", rqt->rqt_data); 138 return -EINVAL; 139 } 140 141 return true; 142 } 143 144 static long long int download_head(unsigned long long total, 145 unsigned int packet_size, 146 long long int *left, 147 int *cnt) 148 { 149 long long int rcv_cnt = 0, left_to_rcv, ret_rcv; 150 struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num); 151 void *transfer_buffer = dfu_get_buf(dfu_entity); 152 void *buf = transfer_buffer; 153 int usb_pkt_cnt = 0, ret; 154 155 /* 156 * Files smaller than THOR_STORE_UNIT_SIZE (now 32 MiB) are stored on 157 * the medium. 158 * The packet response is sent on the purpose after successful data 159 * chunk write. There is a room for improvement when asynchronous write 160 * is performed. 161 */ 162 while (total - rcv_cnt >= packet_size) { 163 thor_set_dma(buf, packet_size); 164 buf += packet_size; 165 ret_rcv = thor_rx_data(); 166 if (ret_rcv < 0) 167 return ret_rcv; 168 rcv_cnt += ret_rcv; 169 debug("%d: RCV data count: %llu cnt: %d\n", usb_pkt_cnt, 170 rcv_cnt, *cnt); 171 172 if ((rcv_cnt % THOR_STORE_UNIT_SIZE) == 0) { 173 ret = dfu_write(dfu_get_entity(alt_setting_num), 174 transfer_buffer, THOR_STORE_UNIT_SIZE, 175 (*cnt)++); 176 if (ret) { 177 pr_err("DFU write failed [%d] cnt: %d", 178 ret, *cnt); 179 return ret; 180 } 181 buf = transfer_buffer; 182 } 183 send_data_rsp(0, ++usb_pkt_cnt); 184 } 185 186 /* Calculate the amount of data to arrive from PC (in bytes) */ 187 left_to_rcv = total - rcv_cnt; 188 189 /* 190 * Calculate number of data already received. but not yet stored 191 * on the medium (they are smaller than THOR_STORE_UNIT_SIZE) 192 */ 193 *left = left_to_rcv + buf - transfer_buffer; 194 debug("%s: left: %llu left_to_rcv: %llu buf: 0x%p\n", __func__, 195 *left, left_to_rcv, buf); 196 197 if (left_to_rcv) { 198 thor_set_dma(buf, packet_size); 199 ret_rcv = thor_rx_data(); 200 if (ret_rcv < 0) 201 return ret_rcv; 202 rcv_cnt += ret_rcv; 203 send_data_rsp(0, ++usb_pkt_cnt); 204 } 205 206 debug("%s: %llu total: %llu cnt: %d\n", __func__, rcv_cnt, total, *cnt); 207 208 return rcv_cnt; 209 } 210 211 static int download_tail(long long int left, int cnt) 212 { 213 struct dfu_entity *dfu_entity; 214 void *transfer_buffer; 215 int ret; 216 217 debug("%s: left: %llu cnt: %d\n", __func__, left, cnt); 218 219 dfu_entity = dfu_get_entity(alt_setting_num); 220 if (!dfu_entity) { 221 pr_err("Alt setting: %d entity not found!\n", alt_setting_num); 222 return -ENOENT; 223 } 224 225 transfer_buffer = dfu_get_buf(dfu_entity); 226 if (!transfer_buffer) { 227 pr_err("Transfer buffer not allocated!"); 228 return -ENXIO; 229 } 230 231 if (left) { 232 ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++); 233 if (ret) { 234 pr_err("DFU write failed [%d]: left: %llu", ret, left); 235 return ret; 236 } 237 } 238 239 /* 240 * To store last "packet" or write file from buffer to filesystem 241 * DFU storage backend requires dfu_flush 242 * 243 * This also frees memory malloc'ed by dfu_get_buf(), so no explicit 244 * need fo call dfu_free_buf() is needed. 245 */ 246 ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt); 247 if (ret) 248 pr_err("DFU flush failed!"); 249 250 return ret; 251 } 252 253 static long long int process_rqt_download(const struct rqt_box *rqt) 254 { 255 ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box)); 256 static long long int left, ret_head; 257 int file_type, ret = 0; 258 static int cnt; 259 260 memset(rsp, 0, sizeof(struct rsp_box)); 261 rsp->rsp = rqt->rqt; 262 rsp->rsp_data = rqt->rqt_data; 263 264 switch (rqt->rqt_data) { 265 case RQT_DL_INIT: 266 thor_file_size = rqt->int_data[0]; 267 debug("INIT: total %d bytes\n", rqt->int_data[0]); 268 break; 269 case RQT_DL_FILE_INFO: 270 file_type = rqt->int_data[0]; 271 if (file_type == FILE_TYPE_PIT) { 272 puts("PIT table file - not supported\n"); 273 rsp->ack = -ENOTSUPP; 274 ret = rsp->ack; 275 break; 276 } 277 278 thor_file_size = rqt->int_data[1]; 279 memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE); 280 f_name[F_NAME_BUF_SIZE] = '\0'; 281 282 debug("INFO: name(%s, %d), size(%llu), type(%d)\n", 283 f_name, 0, thor_file_size, file_type); 284 285 rsp->int_data[0] = THOR_PACKET_SIZE; 286 287 alt_setting_num = dfu_get_alt(f_name); 288 if (alt_setting_num < 0) { 289 pr_err("Alt setting [%d] to write not found!", 290 alt_setting_num); 291 rsp->ack = -ENODEV; 292 ret = rsp->ack; 293 } 294 break; 295 case RQT_DL_FILE_START: 296 send_rsp(rsp); 297 ret_head = download_head(thor_file_size, THOR_PACKET_SIZE, 298 &left, &cnt); 299 if (ret_head < 0) { 300 left = 0; 301 cnt = 0; 302 } 303 return ret_head; 304 case RQT_DL_FILE_END: 305 debug("DL FILE_END\n"); 306 rsp->ack = download_tail(left, cnt); 307 ret = rsp->ack; 308 left = 0; 309 cnt = 0; 310 break; 311 case RQT_DL_EXIT: 312 debug("DL EXIT\n"); 313 break; 314 default: 315 pr_err("Operation not supported: %d", rqt->rqt_data); 316 ret = -ENOTSUPP; 317 } 318 319 send_rsp(rsp); 320 return ret; 321 } 322 323 static int process_data(void) 324 { 325 ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box)); 326 int ret = -EINVAL; 327 328 memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box)); 329 330 debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data); 331 332 switch (rqt->rqt) { 333 case RQT_INFO: 334 ret = process_rqt_info(rqt); 335 break; 336 case RQT_CMD: 337 ret = process_rqt_cmd(rqt); 338 break; 339 case RQT_DL: 340 ret = (int) process_rqt_download(rqt); 341 break; 342 case RQT_UL: 343 puts("RQT: UPLOAD not supported!\n"); 344 break; 345 default: 346 pr_err("unknown request (%d)", rqt->rqt); 347 } 348 349 return ret; 350 } 351 352 /* ********************************************************** */ 353 /* THOR USB Function */ 354 /* ********************************************************** */ 355 356 static inline struct usb_endpoint_descriptor * 357 ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, 358 struct usb_endpoint_descriptor *fs) 359 { 360 if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) 361 return hs; 362 return fs; 363 } 364 365 static struct usb_interface_descriptor thor_downloader_intf_data = { 366 .bLength = sizeof(thor_downloader_intf_data), 367 .bDescriptorType = USB_DT_INTERFACE, 368 369 .bNumEndpoints = 2, 370 .bInterfaceClass = USB_CLASS_CDC_DATA, 371 }; 372 373 static struct usb_endpoint_descriptor fs_in_desc = { 374 .bLength = USB_DT_ENDPOINT_SIZE, 375 .bDescriptorType = USB_DT_ENDPOINT, 376 377 .bEndpointAddress = USB_DIR_IN, 378 .bmAttributes = USB_ENDPOINT_XFER_BULK, 379 }; 380 381 static struct usb_endpoint_descriptor fs_out_desc = { 382 .bLength = USB_DT_ENDPOINT_SIZE, 383 .bDescriptorType = USB_DT_ENDPOINT, 384 385 .bEndpointAddress = USB_DIR_OUT, 386 .bmAttributes = USB_ENDPOINT_XFER_BULK, 387 }; 388 389 /* CDC configuration */ 390 static struct usb_interface_descriptor thor_downloader_intf_int = { 391 .bLength = sizeof(thor_downloader_intf_int), 392 .bDescriptorType = USB_DT_INTERFACE, 393 394 .bNumEndpoints = 1, 395 .bInterfaceClass = USB_CLASS_COMM, 396 /* 0x02 Abstract Line Control Model */ 397 .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, 398 /* 0x01 Common AT commands */ 399 .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, 400 }; 401 402 static struct usb_cdc_header_desc thor_downloader_cdc_header = { 403 .bLength = sizeof(thor_downloader_cdc_header), 404 .bDescriptorType = 0x24, /* CS_INTERFACE */ 405 .bDescriptorSubType = 0x00, 406 .bcdCDC = 0x0110, 407 }; 408 409 static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = { 410 .bLength = sizeof(thor_downloader_cdc_call), 411 .bDescriptorType = 0x24, /* CS_INTERFACE */ 412 .bDescriptorSubType = 0x01, 413 .bmCapabilities = 0x00, 414 .bDataInterface = 0x01, 415 }; 416 417 static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = { 418 .bLength = sizeof(thor_downloader_cdc_abstract), 419 .bDescriptorType = 0x24, /* CS_INTERFACE */ 420 .bDescriptorSubType = 0x02, 421 .bmCapabilities = 0x00, 422 }; 423 424 static struct usb_cdc_union_desc thor_downloader_cdc_union = { 425 .bLength = sizeof(thor_downloader_cdc_union), 426 .bDescriptorType = 0x24, /* CS_INTERFACE */ 427 .bDescriptorSubType = USB_CDC_UNION_TYPE, 428 }; 429 430 static struct usb_endpoint_descriptor fs_int_desc = { 431 .bLength = USB_DT_ENDPOINT_SIZE, 432 .bDescriptorType = USB_DT_ENDPOINT, 433 434 .bEndpointAddress = 3 | USB_DIR_IN, 435 .bmAttributes = USB_ENDPOINT_XFER_INT, 436 .wMaxPacketSize = __constant_cpu_to_le16(16), 437 438 .bInterval = 0x9, 439 }; 440 441 static struct usb_interface_assoc_descriptor 442 thor_iad_descriptor = { 443 .bLength = sizeof(thor_iad_descriptor), 444 .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, 445 446 .bFirstInterface = 0, 447 .bInterfaceCount = 2, /* control + data */ 448 .bFunctionClass = USB_CLASS_COMM, 449 .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, 450 .bFunctionProtocol = USB_CDC_PROTO_NONE, 451 }; 452 453 static struct usb_endpoint_descriptor hs_in_desc = { 454 .bLength = USB_DT_ENDPOINT_SIZE, 455 .bDescriptorType = USB_DT_ENDPOINT, 456 457 .bmAttributes = USB_ENDPOINT_XFER_BULK, 458 .wMaxPacketSize = __constant_cpu_to_le16(512), 459 }; 460 461 static struct usb_endpoint_descriptor hs_out_desc = { 462 .bLength = USB_DT_ENDPOINT_SIZE, 463 .bDescriptorType = USB_DT_ENDPOINT, 464 465 .bmAttributes = USB_ENDPOINT_XFER_BULK, 466 .wMaxPacketSize = __constant_cpu_to_le16(512), 467 }; 468 469 static struct usb_endpoint_descriptor hs_int_desc = { 470 .bLength = USB_DT_ENDPOINT_SIZE, 471 .bDescriptorType = USB_DT_ENDPOINT, 472 473 .bmAttributes = USB_ENDPOINT_XFER_INT, 474 .wMaxPacketSize = __constant_cpu_to_le16(16), 475 476 .bInterval = 0x9, 477 }; 478 479 /* 480 * This attribute vendor descriptor is necessary for correct operation with 481 * Windows version of THOR download program 482 * 483 * It prevents windows driver from sending zero lenght packet (ZLP) after 484 * each THOR_PACKET_SIZE. This assures consistent behaviour with libusb 485 */ 486 static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = { 487 .bLength = sizeof(thor_downloader_cdc_av), 488 .bDescriptorType = 0x24, 489 .bDescriptorSubType = 0x80, 490 .DAUType = 0x0002, 491 .DAULength = 0x0001, 492 .DAUValue = 0x00, 493 }; 494 495 static const struct usb_descriptor_header *hs_thor_downloader_function[] = { 496 (struct usb_descriptor_header *)&thor_iad_descriptor, 497 498 (struct usb_descriptor_header *)&thor_downloader_intf_int, 499 (struct usb_descriptor_header *)&thor_downloader_cdc_header, 500 (struct usb_descriptor_header *)&thor_downloader_cdc_call, 501 (struct usb_descriptor_header *)&thor_downloader_cdc_abstract, 502 (struct usb_descriptor_header *)&thor_downloader_cdc_union, 503 (struct usb_descriptor_header *)&hs_int_desc, 504 505 (struct usb_descriptor_header *)&thor_downloader_intf_data, 506 (struct usb_descriptor_header *)&thor_downloader_cdc_av, 507 (struct usb_descriptor_header *)&hs_in_desc, 508 (struct usb_descriptor_header *)&hs_out_desc, 509 NULL, 510 }; 511 512 /*-------------------------------------------------------------------------*/ 513 static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) 514 { 515 struct usb_request *req; 516 517 req = usb_ep_alloc_request(ep, 0); 518 if (!req) 519 return req; 520 521 req->length = length; 522 req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length); 523 if (!req->buf) { 524 usb_ep_free_request(ep, req); 525 req = NULL; 526 } 527 528 return req; 529 } 530 531 static int thor_rx_data(void) 532 { 533 struct thor_dev *dev = thor_func->dev; 534 int data_to_rx, tmp, status; 535 536 data_to_rx = dev->out_req->length; 537 tmp = data_to_rx; 538 do { 539 dev->out_req->length = data_to_rx; 540 debug("dev->out_req->length:%d dev->rxdata:%d\n", 541 dev->out_req->length, dev->rxdata); 542 543 status = usb_ep_queue(dev->out_ep, dev->out_req, 0); 544 if (status) { 545 pr_err("kill %s: resubmit %d bytes --> %d", 546 dev->out_ep->name, dev->out_req->length, status); 547 usb_ep_set_halt(dev->out_ep); 548 return -EAGAIN; 549 } 550 551 while (!dev->rxdata) { 552 usb_gadget_handle_interrupts(0); 553 if (ctrlc()) 554 return -1; 555 } 556 dev->rxdata = 0; 557 data_to_rx -= dev->out_req->actual; 558 } while (data_to_rx); 559 560 return tmp; 561 } 562 563 static void thor_tx_data(unsigned char *data, int len) 564 { 565 struct thor_dev *dev = thor_func->dev; 566 unsigned char *ptr = dev->in_req->buf; 567 int status; 568 569 memset(ptr, 0, len); 570 memcpy(ptr, data, len); 571 572 dev->in_req->length = len; 573 574 debug("%s: dev->in_req->length:%d to_cpy:%zd\n", __func__, 575 dev->in_req->length, sizeof(data)); 576 577 status = usb_ep_queue(dev->in_ep, dev->in_req, 0); 578 if (status) { 579 pr_err("kill %s: resubmit %d bytes --> %d", 580 dev->in_ep->name, dev->in_req->length, status); 581 usb_ep_set_halt(dev->in_ep); 582 } 583 584 /* Wait until tx interrupt received */ 585 while (!dev->txdata) 586 usb_gadget_handle_interrupts(0); 587 588 dev->txdata = 0; 589 } 590 591 static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req) 592 { 593 struct thor_dev *dev = thor_func->dev; 594 int status = req->status; 595 596 debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req); 597 switch (status) { 598 case 0: 599 if (ep == dev->out_ep) 600 dev->rxdata = 1; 601 else 602 dev->txdata = 1; 603 604 break; 605 606 /* this endpoint is normally active while we're configured */ 607 case -ECONNABORTED: /* hardware forced ep reset */ 608 case -ECONNRESET: /* request dequeued */ 609 case -ESHUTDOWN: /* disconnect from host */ 610 case -EREMOTEIO: /* short read */ 611 case -EOVERFLOW: 612 pr_err("ERROR:%d", status); 613 break; 614 } 615 616 debug("%s complete --> %d, %d/%d\n", ep->name, 617 status, req->actual, req->length); 618 } 619 620 static struct usb_request *thor_start_ep(struct usb_ep *ep) 621 { 622 struct usb_request *req; 623 624 req = alloc_ep_req(ep, THOR_PACKET_SIZE); 625 debug("%s: ep:%p req:%p\n", __func__, ep, req); 626 627 if (!req) 628 return NULL; 629 630 memset(req->buf, 0, req->length); 631 req->complete = thor_rx_tx_complete; 632 633 return req; 634 } 635 636 static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req) 637 { 638 if (req->status || req->actual != req->length) 639 debug("setup complete --> %d, %d/%d\n", 640 req->status, req->actual, req->length); 641 } 642 643 static int 644 thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) 645 { 646 struct thor_dev *dev = thor_func->dev; 647 struct usb_request *req = dev->req; 648 struct usb_gadget *gadget = dev->gadget; 649 int value = 0; 650 651 u16 len = le16_to_cpu(ctrl->wLength); 652 653 debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n", 654 ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex, 655 ctrl->wLength); 656 657 switch (ctrl->bRequest) { 658 case USB_CDC_REQ_SET_CONTROL_LINE_STATE: 659 value = 0; 660 break; 661 case USB_CDC_REQ_SET_LINE_CODING: 662 value = len; 663 /* Line Coding set done = configuration done */ 664 thor_func->dev->configuration_done = 1; 665 break; 666 667 default: 668 pr_err("thor_setup: unknown request: %d", ctrl->bRequest); 669 } 670 671 if (value >= 0) { 672 req->length = value; 673 req->zero = value < len; 674 value = usb_ep_queue(gadget->ep0, req, 0); 675 if (value < 0) { 676 debug("%s: ep_queue: %d\n", __func__, value); 677 req->status = 0; 678 } 679 } 680 681 return value; 682 } 683 684 /* Specific to the THOR protocol */ 685 static void thor_set_dma(void *addr, int len) 686 { 687 struct thor_dev *dev = thor_func->dev; 688 689 debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req); 690 debug("addr:%p, len:%d\n", addr, len); 691 692 dev->out_req->buf = addr; 693 dev->out_req->length = len; 694 } 695 696 int thor_init(void) 697 { 698 struct thor_dev *dev = thor_func->dev; 699 700 /* Wait for a device enumeration and configuration settings */ 701 debug("THOR enumeration/configuration setting....\n"); 702 while (!dev->configuration_done) 703 usb_gadget_handle_interrupts(0); 704 705 thor_set_dma(thor_rx_data_buf, strlen("THOR")); 706 /* detect the download request from Host PC */ 707 if (thor_rx_data() < 0) { 708 printf("%s: Data not received!\n", __func__); 709 return -1; 710 } 711 712 if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) { 713 puts("Download request from the Host PC\n"); 714 udelay(30 * 1000); /* 30 ms */ 715 716 strcpy((char *)thor_tx_data_buf, "ROHT"); 717 thor_tx_data(thor_tx_data_buf, strlen("ROHT")); 718 } else { 719 puts("Wrong reply information\n"); 720 return -1; 721 } 722 723 return 0; 724 } 725 726 int thor_handle(void) 727 { 728 int ret; 729 730 /* receive the data from Host PC */ 731 while (1) { 732 thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box)); 733 ret = thor_rx_data(); 734 735 if (ret > 0) { 736 ret = process_data(); 737 #ifdef CONFIG_THOR_RESET_OFF 738 if (ret == RESET_DONE) 739 break; 740 #endif 741 if (ret < 0) 742 return ret; 743 } else { 744 printf("%s: No data received!\n", __func__); 745 break; 746 } 747 } 748 749 return 0; 750 } 751 752 static int thor_func_bind(struct usb_configuration *c, struct usb_function *f) 753 { 754 struct usb_gadget *gadget = c->cdev->gadget; 755 struct f_thor *f_thor = func_to_thor(f); 756 struct thor_dev *dev; 757 struct usb_ep *ep; 758 int status; 759 760 thor_func = f_thor; 761 dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev)); 762 if (!dev) 763 return -ENOMEM; 764 765 memset(dev, 0, sizeof(*dev)); 766 dev->gadget = gadget; 767 f_thor->dev = dev; 768 769 debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n", 770 __func__, c, f); 771 debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev); 772 773 /* EP0 */ 774 /* preallocate control response and buffer */ 775 dev->req = usb_ep_alloc_request(gadget->ep0, 0); 776 if (!dev->req) { 777 status = -ENOMEM; 778 goto fail; 779 } 780 dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, 781 THOR_PACKET_SIZE); 782 if (!dev->req->buf) { 783 status = -ENOMEM; 784 goto fail; 785 } 786 787 dev->req->complete = thor_setup_complete; 788 789 /* DYNAMIC interface numbers assignments */ 790 status = usb_interface_id(c, f); 791 792 if (status < 0) 793 goto fail; 794 795 thor_downloader_intf_int.bInterfaceNumber = status; 796 thor_downloader_cdc_union.bMasterInterface0 = status; 797 798 status = usb_interface_id(c, f); 799 800 if (status < 0) 801 goto fail; 802 803 thor_downloader_intf_data.bInterfaceNumber = status; 804 thor_downloader_cdc_union.bSlaveInterface0 = status; 805 806 /* allocate instance-specific endpoints */ 807 ep = usb_ep_autoconfig(gadget, &fs_in_desc); 808 if (!ep) { 809 status = -ENODEV; 810 goto fail; 811 } 812 813 if (gadget_is_dualspeed(gadget)) { 814 hs_in_desc.bEndpointAddress = 815 fs_in_desc.bEndpointAddress; 816 } 817 818 dev->in_ep = ep; /* Store IN EP for enabling @ setup */ 819 ep->driver_data = dev; 820 821 ep = usb_ep_autoconfig(gadget, &fs_out_desc); 822 if (!ep) { 823 status = -ENODEV; 824 goto fail; 825 } 826 827 if (gadget_is_dualspeed(gadget)) 828 hs_out_desc.bEndpointAddress = 829 fs_out_desc.bEndpointAddress; 830 831 dev->out_ep = ep; /* Store OUT EP for enabling @ setup */ 832 ep->driver_data = dev; 833 834 ep = usb_ep_autoconfig(gadget, &fs_int_desc); 835 if (!ep) { 836 status = -ENODEV; 837 goto fail; 838 } 839 840 dev->int_ep = ep; 841 ep->driver_data = dev; 842 843 if (gadget_is_dualspeed(gadget)) { 844 hs_int_desc.bEndpointAddress = 845 fs_int_desc.bEndpointAddress; 846 847 f->hs_descriptors = (struct usb_descriptor_header **) 848 &hs_thor_downloader_function; 849 850 if (!f->hs_descriptors) 851 goto fail; 852 } 853 854 debug("%s: out_ep:%p out_req:%p\n", __func__, 855 dev->out_ep, dev->out_req); 856 857 return 0; 858 859 fail: 860 free(dev); 861 return status; 862 } 863 864 static void free_ep_req(struct usb_ep *ep, struct usb_request *req) 865 { 866 free(req->buf); 867 usb_ep_free_request(ep, req); 868 } 869 870 static void thor_unbind(struct usb_configuration *c, struct usb_function *f) 871 { 872 struct f_thor *f_thor = func_to_thor(f); 873 struct thor_dev *dev = f_thor->dev; 874 875 free(dev); 876 memset(thor_func, 0, sizeof(*thor_func)); 877 thor_func = NULL; 878 } 879 880 static void thor_func_disable(struct usb_function *f) 881 { 882 struct f_thor *f_thor = func_to_thor(f); 883 struct thor_dev *dev = f_thor->dev; 884 885 debug("%s:\n", __func__); 886 887 /* Avoid freeing memory when ep is still claimed */ 888 if (dev->in_ep->driver_data) { 889 free_ep_req(dev->in_ep, dev->in_req); 890 usb_ep_disable(dev->in_ep); 891 dev->in_ep->driver_data = NULL; 892 } 893 894 if (dev->out_ep->driver_data) { 895 free(dev->out_req->buf); 896 dev->out_req->buf = NULL; 897 usb_ep_free_request(dev->out_ep, dev->out_req); 898 usb_ep_disable(dev->out_ep); 899 dev->out_ep->driver_data = NULL; 900 } 901 902 if (dev->int_ep->driver_data) { 903 usb_ep_disable(dev->int_ep); 904 dev->int_ep->driver_data = NULL; 905 } 906 } 907 908 static int thor_eps_setup(struct usb_function *f) 909 { 910 struct usb_composite_dev *cdev = f->config->cdev; 911 struct usb_gadget *gadget = cdev->gadget; 912 struct thor_dev *dev = thor_func->dev; 913 struct usb_endpoint_descriptor *d; 914 struct usb_request *req; 915 struct usb_ep *ep; 916 int result; 917 918 ep = dev->in_ep; 919 d = ep_desc(gadget, &hs_in_desc, &fs_in_desc); 920 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); 921 922 result = usb_ep_enable(ep, d); 923 if (result) 924 goto exit; 925 926 ep->driver_data = cdev; /* claim */ 927 req = thor_start_ep(ep); 928 if (!req) { 929 usb_ep_disable(ep); 930 result = -EIO; 931 goto exit; 932 } 933 934 dev->in_req = req; 935 ep = dev->out_ep; 936 d = ep_desc(gadget, &hs_out_desc, &fs_out_desc); 937 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); 938 939 result = usb_ep_enable(ep, d); 940 if (result) 941 goto exit; 942 943 ep->driver_data = cdev; /* claim */ 944 req = thor_start_ep(ep); 945 if (!req) { 946 usb_ep_disable(ep); 947 result = -EIO; 948 goto exit; 949 } 950 951 dev->out_req = req; 952 /* ACM control EP */ 953 ep = dev->int_ep; 954 ep->driver_data = cdev; /* claim */ 955 956 exit: 957 return result; 958 } 959 960 static int thor_func_set_alt(struct usb_function *f, 961 unsigned intf, unsigned alt) 962 { 963 struct thor_dev *dev = thor_func->dev; 964 int result; 965 966 debug("%s: func: %s intf: %d alt: %d\n", 967 __func__, f->name, intf, alt); 968 969 switch (intf) { 970 case 0: 971 debug("ACM INTR interface\n"); 972 break; 973 case 1: 974 debug("Communication Data interface\n"); 975 result = thor_eps_setup(f); 976 if (result) 977 pr_err("%s: EPs setup failed!", __func__); 978 dev->configuration_done = 1; 979 break; 980 } 981 982 return 0; 983 } 984 985 static int thor_func_init(struct usb_configuration *c) 986 { 987 struct f_thor *f_thor; 988 int status; 989 990 debug("%s: cdev: 0x%p\n", __func__, c->cdev); 991 992 f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor)); 993 if (!f_thor) 994 return -ENOMEM; 995 996 memset(f_thor, 0, sizeof(*f_thor)); 997 998 f_thor->usb_function.name = "f_thor"; 999 f_thor->usb_function.bind = thor_func_bind; 1000 f_thor->usb_function.unbind = thor_unbind; 1001 f_thor->usb_function.setup = thor_func_setup; 1002 f_thor->usb_function.set_alt = thor_func_set_alt; 1003 f_thor->usb_function.disable = thor_func_disable; 1004 1005 status = usb_add_function(c, &f_thor->usb_function); 1006 if (status) 1007 free(f_thor); 1008 1009 return status; 1010 } 1011 1012 int thor_add(struct usb_configuration *c) 1013 { 1014 debug("%s:\n", __func__); 1015 return thor_func_init(c); 1016 } 1017 1018 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_thor, thor_add); 1019