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); 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); 280 281 debug("INFO: name(%s, %d), size(%llu), type(%d)\n", 282 f_name, 0, thor_file_size, file_type); 283 284 rsp->int_data[0] = THOR_PACKET_SIZE; 285 286 alt_setting_num = dfu_get_alt(f_name); 287 if (alt_setting_num < 0) { 288 pr_err("Alt setting [%d] to write not found!", 289 alt_setting_num); 290 rsp->ack = -ENODEV; 291 ret = rsp->ack; 292 } 293 break; 294 case RQT_DL_FILE_START: 295 send_rsp(rsp); 296 ret_head = download_head(thor_file_size, THOR_PACKET_SIZE, 297 &left, &cnt); 298 if (ret_head < 0) { 299 left = 0; 300 cnt = 0; 301 } 302 return ret_head; 303 case RQT_DL_FILE_END: 304 debug("DL FILE_END\n"); 305 rsp->ack = download_tail(left, cnt); 306 ret = rsp->ack; 307 left = 0; 308 cnt = 0; 309 break; 310 case RQT_DL_EXIT: 311 debug("DL EXIT\n"); 312 break; 313 default: 314 pr_err("Operation not supported: %d", rqt->rqt_data); 315 ret = -ENOTSUPP; 316 } 317 318 send_rsp(rsp); 319 return ret; 320 } 321 322 static int process_data(void) 323 { 324 ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box)); 325 int ret = -EINVAL; 326 327 memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box)); 328 329 debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data); 330 331 switch (rqt->rqt) { 332 case RQT_INFO: 333 ret = process_rqt_info(rqt); 334 break; 335 case RQT_CMD: 336 ret = process_rqt_cmd(rqt); 337 break; 338 case RQT_DL: 339 ret = (int) process_rqt_download(rqt); 340 break; 341 case RQT_UL: 342 puts("RQT: UPLOAD not supported!\n"); 343 break; 344 default: 345 pr_err("unknown request (%d)", rqt->rqt); 346 } 347 348 return ret; 349 } 350 351 /* ********************************************************** */ 352 /* THOR USB Function */ 353 /* ********************************************************** */ 354 355 static inline struct usb_endpoint_descriptor * 356 ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, 357 struct usb_endpoint_descriptor *fs) 358 { 359 if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) 360 return hs; 361 return fs; 362 } 363 364 static struct usb_interface_descriptor thor_downloader_intf_data = { 365 .bLength = sizeof(thor_downloader_intf_data), 366 .bDescriptorType = USB_DT_INTERFACE, 367 368 .bNumEndpoints = 2, 369 .bInterfaceClass = USB_CLASS_CDC_DATA, 370 }; 371 372 static struct usb_endpoint_descriptor fs_in_desc = { 373 .bLength = USB_DT_ENDPOINT_SIZE, 374 .bDescriptorType = USB_DT_ENDPOINT, 375 376 .bEndpointAddress = USB_DIR_IN, 377 .bmAttributes = USB_ENDPOINT_XFER_BULK, 378 }; 379 380 static struct usb_endpoint_descriptor fs_out_desc = { 381 .bLength = USB_DT_ENDPOINT_SIZE, 382 .bDescriptorType = USB_DT_ENDPOINT, 383 384 .bEndpointAddress = USB_DIR_OUT, 385 .bmAttributes = USB_ENDPOINT_XFER_BULK, 386 }; 387 388 /* CDC configuration */ 389 static struct usb_interface_descriptor thor_downloader_intf_int = { 390 .bLength = sizeof(thor_downloader_intf_int), 391 .bDescriptorType = USB_DT_INTERFACE, 392 393 .bNumEndpoints = 1, 394 .bInterfaceClass = USB_CLASS_COMM, 395 /* 0x02 Abstract Line Control Model */ 396 .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, 397 /* 0x01 Common AT commands */ 398 .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, 399 }; 400 401 static struct usb_cdc_header_desc thor_downloader_cdc_header = { 402 .bLength = sizeof(thor_downloader_cdc_header), 403 .bDescriptorType = 0x24, /* CS_INTERFACE */ 404 .bDescriptorSubType = 0x00, 405 .bcdCDC = 0x0110, 406 }; 407 408 static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = { 409 .bLength = sizeof(thor_downloader_cdc_call), 410 .bDescriptorType = 0x24, /* CS_INTERFACE */ 411 .bDescriptorSubType = 0x01, 412 .bmCapabilities = 0x00, 413 .bDataInterface = 0x01, 414 }; 415 416 static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = { 417 .bLength = sizeof(thor_downloader_cdc_abstract), 418 .bDescriptorType = 0x24, /* CS_INTERFACE */ 419 .bDescriptorSubType = 0x02, 420 .bmCapabilities = 0x00, 421 }; 422 423 static struct usb_cdc_union_desc thor_downloader_cdc_union = { 424 .bLength = sizeof(thor_downloader_cdc_union), 425 .bDescriptorType = 0x24, /* CS_INTERFACE */ 426 .bDescriptorSubType = USB_CDC_UNION_TYPE, 427 }; 428 429 static struct usb_endpoint_descriptor fs_int_desc = { 430 .bLength = USB_DT_ENDPOINT_SIZE, 431 .bDescriptorType = USB_DT_ENDPOINT, 432 433 .bEndpointAddress = 3 | USB_DIR_IN, 434 .bmAttributes = USB_ENDPOINT_XFER_INT, 435 .wMaxPacketSize = __constant_cpu_to_le16(16), 436 437 .bInterval = 0x9, 438 }; 439 440 static struct usb_interface_assoc_descriptor 441 thor_iad_descriptor = { 442 .bLength = sizeof(thor_iad_descriptor), 443 .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, 444 445 .bFirstInterface = 0, 446 .bInterfaceCount = 2, /* control + data */ 447 .bFunctionClass = USB_CLASS_COMM, 448 .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, 449 .bFunctionProtocol = USB_CDC_PROTO_NONE, 450 }; 451 452 static struct usb_endpoint_descriptor hs_in_desc = { 453 .bLength = USB_DT_ENDPOINT_SIZE, 454 .bDescriptorType = USB_DT_ENDPOINT, 455 456 .bmAttributes = USB_ENDPOINT_XFER_BULK, 457 .wMaxPacketSize = __constant_cpu_to_le16(512), 458 }; 459 460 static struct usb_endpoint_descriptor hs_out_desc = { 461 .bLength = USB_DT_ENDPOINT_SIZE, 462 .bDescriptorType = USB_DT_ENDPOINT, 463 464 .bmAttributes = USB_ENDPOINT_XFER_BULK, 465 .wMaxPacketSize = __constant_cpu_to_le16(512), 466 }; 467 468 static struct usb_endpoint_descriptor hs_int_desc = { 469 .bLength = USB_DT_ENDPOINT_SIZE, 470 .bDescriptorType = USB_DT_ENDPOINT, 471 472 .bmAttributes = USB_ENDPOINT_XFER_INT, 473 .wMaxPacketSize = __constant_cpu_to_le16(16), 474 475 .bInterval = 0x9, 476 }; 477 478 /* 479 * This attribute vendor descriptor is necessary for correct operation with 480 * Windows version of THOR download program 481 * 482 * It prevents windows driver from sending zero lenght packet (ZLP) after 483 * each THOR_PACKET_SIZE. This assures consistent behaviour with libusb 484 */ 485 static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = { 486 .bLength = sizeof(thor_downloader_cdc_av), 487 .bDescriptorType = 0x24, 488 .bDescriptorSubType = 0x80, 489 .DAUType = 0x0002, 490 .DAULength = 0x0001, 491 .DAUValue = 0x00, 492 }; 493 494 static const struct usb_descriptor_header *hs_thor_downloader_function[] = { 495 (struct usb_descriptor_header *)&thor_iad_descriptor, 496 497 (struct usb_descriptor_header *)&thor_downloader_intf_int, 498 (struct usb_descriptor_header *)&thor_downloader_cdc_header, 499 (struct usb_descriptor_header *)&thor_downloader_cdc_call, 500 (struct usb_descriptor_header *)&thor_downloader_cdc_abstract, 501 (struct usb_descriptor_header *)&thor_downloader_cdc_union, 502 (struct usb_descriptor_header *)&hs_int_desc, 503 504 (struct usb_descriptor_header *)&thor_downloader_intf_data, 505 (struct usb_descriptor_header *)&thor_downloader_cdc_av, 506 (struct usb_descriptor_header *)&hs_in_desc, 507 (struct usb_descriptor_header *)&hs_out_desc, 508 NULL, 509 }; 510 511 /*-------------------------------------------------------------------------*/ 512 static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) 513 { 514 struct usb_request *req; 515 516 req = usb_ep_alloc_request(ep, 0); 517 if (!req) 518 return req; 519 520 req->length = length; 521 req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length); 522 if (!req->buf) { 523 usb_ep_free_request(ep, req); 524 req = NULL; 525 } 526 527 return req; 528 } 529 530 static int thor_rx_data(void) 531 { 532 struct thor_dev *dev = thor_func->dev; 533 int data_to_rx, tmp, status; 534 535 data_to_rx = dev->out_req->length; 536 tmp = data_to_rx; 537 do { 538 dev->out_req->length = data_to_rx; 539 debug("dev->out_req->length:%d dev->rxdata:%d\n", 540 dev->out_req->length, dev->rxdata); 541 542 status = usb_ep_queue(dev->out_ep, dev->out_req, 0); 543 if (status) { 544 pr_err("kill %s: resubmit %d bytes --> %d", 545 dev->out_ep->name, dev->out_req->length, status); 546 usb_ep_set_halt(dev->out_ep); 547 return -EAGAIN; 548 } 549 550 while (!dev->rxdata) { 551 usb_gadget_handle_interrupts(0); 552 if (ctrlc()) 553 return -1; 554 } 555 dev->rxdata = 0; 556 data_to_rx -= dev->out_req->actual; 557 } while (data_to_rx); 558 559 return tmp; 560 } 561 562 static void thor_tx_data(unsigned char *data, int len) 563 { 564 struct thor_dev *dev = thor_func->dev; 565 unsigned char *ptr = dev->in_req->buf; 566 int status; 567 568 memset(ptr, 0, len); 569 memcpy(ptr, data, len); 570 571 dev->in_req->length = len; 572 573 debug("%s: dev->in_req->length:%d to_cpy:%zd\n", __func__, 574 dev->in_req->length, sizeof(data)); 575 576 status = usb_ep_queue(dev->in_ep, dev->in_req, 0); 577 if (status) { 578 pr_err("kill %s: resubmit %d bytes --> %d", 579 dev->in_ep->name, dev->in_req->length, status); 580 usb_ep_set_halt(dev->in_ep); 581 } 582 583 /* Wait until tx interrupt received */ 584 while (!dev->txdata) 585 usb_gadget_handle_interrupts(0); 586 587 dev->txdata = 0; 588 } 589 590 static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req) 591 { 592 struct thor_dev *dev = thor_func->dev; 593 int status = req->status; 594 595 debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req); 596 switch (status) { 597 case 0: 598 if (ep == dev->out_ep) 599 dev->rxdata = 1; 600 else 601 dev->txdata = 1; 602 603 break; 604 605 /* this endpoint is normally active while we're configured */ 606 case -ECONNABORTED: /* hardware forced ep reset */ 607 case -ECONNRESET: /* request dequeued */ 608 case -ESHUTDOWN: /* disconnect from host */ 609 case -EREMOTEIO: /* short read */ 610 case -EOVERFLOW: 611 pr_err("ERROR:%d", status); 612 break; 613 } 614 615 debug("%s complete --> %d, %d/%d\n", ep->name, 616 status, req->actual, req->length); 617 } 618 619 static struct usb_request *thor_start_ep(struct usb_ep *ep) 620 { 621 struct usb_request *req; 622 623 req = alloc_ep_req(ep, THOR_PACKET_SIZE); 624 debug("%s: ep:%p req:%p\n", __func__, ep, req); 625 626 if (!req) 627 return NULL; 628 629 memset(req->buf, 0, req->length); 630 req->complete = thor_rx_tx_complete; 631 632 return req; 633 } 634 635 static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req) 636 { 637 if (req->status || req->actual != req->length) 638 debug("setup complete --> %d, %d/%d\n", 639 req->status, req->actual, req->length); 640 } 641 642 static int 643 thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) 644 { 645 struct thor_dev *dev = thor_func->dev; 646 struct usb_request *req = dev->req; 647 struct usb_gadget *gadget = dev->gadget; 648 int value = 0; 649 650 u16 len = le16_to_cpu(ctrl->wLength); 651 652 debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n", 653 ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex, 654 ctrl->wLength); 655 656 switch (ctrl->bRequest) { 657 case USB_CDC_REQ_SET_CONTROL_LINE_STATE: 658 value = 0; 659 break; 660 case USB_CDC_REQ_SET_LINE_CODING: 661 value = len; 662 /* Line Coding set done = configuration done */ 663 thor_func->dev->configuration_done = 1; 664 break; 665 666 default: 667 pr_err("thor_setup: unknown request: %d", ctrl->bRequest); 668 } 669 670 if (value >= 0) { 671 req->length = value; 672 req->zero = value < len; 673 value = usb_ep_queue(gadget->ep0, req, 0); 674 if (value < 0) { 675 debug("%s: ep_queue: %d\n", __func__, value); 676 req->status = 0; 677 } 678 } 679 680 return value; 681 } 682 683 /* Specific to the THOR protocol */ 684 static void thor_set_dma(void *addr, int len) 685 { 686 struct thor_dev *dev = thor_func->dev; 687 688 debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req); 689 debug("addr:%p, len:%d\n", addr, len); 690 691 dev->out_req->buf = addr; 692 dev->out_req->length = len; 693 } 694 695 int thor_init(void) 696 { 697 struct thor_dev *dev = thor_func->dev; 698 699 /* Wait for a device enumeration and configuration settings */ 700 debug("THOR enumeration/configuration setting....\n"); 701 while (!dev->configuration_done) 702 usb_gadget_handle_interrupts(0); 703 704 thor_set_dma(thor_rx_data_buf, strlen("THOR")); 705 /* detect the download request from Host PC */ 706 if (thor_rx_data() < 0) { 707 printf("%s: Data not received!\n", __func__); 708 return -1; 709 } 710 711 if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) { 712 puts("Download request from the Host PC\n"); 713 udelay(30 * 1000); /* 30 ms */ 714 715 strcpy((char *)thor_tx_data_buf, "ROHT"); 716 thor_tx_data(thor_tx_data_buf, strlen("ROHT")); 717 } else { 718 puts("Wrong reply information\n"); 719 return -1; 720 } 721 722 return 0; 723 } 724 725 int thor_handle(void) 726 { 727 int ret; 728 729 /* receive the data from Host PC */ 730 while (1) { 731 thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box)); 732 ret = thor_rx_data(); 733 734 if (ret > 0) { 735 ret = process_data(); 736 #ifdef CONFIG_THOR_RESET_OFF 737 if (ret == RESET_DONE) 738 break; 739 #endif 740 if (ret < 0) 741 return ret; 742 } else { 743 printf("%s: No data received!\n", __func__); 744 break; 745 } 746 } 747 748 return 0; 749 } 750 751 static int thor_func_bind(struct usb_configuration *c, struct usb_function *f) 752 { 753 struct usb_gadget *gadget = c->cdev->gadget; 754 struct f_thor *f_thor = func_to_thor(f); 755 struct thor_dev *dev; 756 struct usb_ep *ep; 757 int status; 758 759 thor_func = f_thor; 760 dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev)); 761 if (!dev) 762 return -ENOMEM; 763 764 memset(dev, 0, sizeof(*dev)); 765 dev->gadget = gadget; 766 f_thor->dev = dev; 767 768 debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n", 769 __func__, c, f); 770 debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev); 771 772 /* EP0 */ 773 /* preallocate control response and buffer */ 774 dev->req = usb_ep_alloc_request(gadget->ep0, 0); 775 if (!dev->req) { 776 status = -ENOMEM; 777 goto fail; 778 } 779 dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, 780 THOR_PACKET_SIZE); 781 if (!dev->req->buf) { 782 status = -ENOMEM; 783 goto fail; 784 } 785 786 dev->req->complete = thor_setup_complete; 787 788 /* DYNAMIC interface numbers assignments */ 789 status = usb_interface_id(c, f); 790 791 if (status < 0) 792 goto fail; 793 794 thor_downloader_intf_int.bInterfaceNumber = status; 795 thor_downloader_cdc_union.bMasterInterface0 = status; 796 797 status = usb_interface_id(c, f); 798 799 if (status < 0) 800 goto fail; 801 802 thor_downloader_intf_data.bInterfaceNumber = status; 803 thor_downloader_cdc_union.bSlaveInterface0 = status; 804 805 /* allocate instance-specific endpoints */ 806 ep = usb_ep_autoconfig(gadget, &fs_in_desc); 807 if (!ep) { 808 status = -ENODEV; 809 goto fail; 810 } 811 812 if (gadget_is_dualspeed(gadget)) { 813 hs_in_desc.bEndpointAddress = 814 fs_in_desc.bEndpointAddress; 815 } 816 817 dev->in_ep = ep; /* Store IN EP for enabling @ setup */ 818 ep->driver_data = dev; 819 820 ep = usb_ep_autoconfig(gadget, &fs_out_desc); 821 if (!ep) { 822 status = -ENODEV; 823 goto fail; 824 } 825 826 if (gadget_is_dualspeed(gadget)) 827 hs_out_desc.bEndpointAddress = 828 fs_out_desc.bEndpointAddress; 829 830 dev->out_ep = ep; /* Store OUT EP for enabling @ setup */ 831 ep->driver_data = dev; 832 833 ep = usb_ep_autoconfig(gadget, &fs_int_desc); 834 if (!ep) { 835 status = -ENODEV; 836 goto fail; 837 } 838 839 dev->int_ep = ep; 840 ep->driver_data = dev; 841 842 if (gadget_is_dualspeed(gadget)) { 843 hs_int_desc.bEndpointAddress = 844 fs_int_desc.bEndpointAddress; 845 846 f->hs_descriptors = (struct usb_descriptor_header **) 847 &hs_thor_downloader_function; 848 849 if (!f->hs_descriptors) 850 goto fail; 851 } 852 853 debug("%s: out_ep:%p out_req:%p\n", __func__, 854 dev->out_ep, dev->out_req); 855 856 return 0; 857 858 fail: 859 free(dev); 860 return status; 861 } 862 863 static void free_ep_req(struct usb_ep *ep, struct usb_request *req) 864 { 865 free(req->buf); 866 usb_ep_free_request(ep, req); 867 } 868 869 static void thor_unbind(struct usb_configuration *c, struct usb_function *f) 870 { 871 struct f_thor *f_thor = func_to_thor(f); 872 struct thor_dev *dev = f_thor->dev; 873 874 free(dev); 875 memset(thor_func, 0, sizeof(*thor_func)); 876 thor_func = NULL; 877 } 878 879 static void thor_func_disable(struct usb_function *f) 880 { 881 struct f_thor *f_thor = func_to_thor(f); 882 struct thor_dev *dev = f_thor->dev; 883 884 debug("%s:\n", __func__); 885 886 /* Avoid freeing memory when ep is still claimed */ 887 if (dev->in_ep->driver_data) { 888 free_ep_req(dev->in_ep, dev->in_req); 889 usb_ep_disable(dev->in_ep); 890 dev->in_ep->driver_data = NULL; 891 } 892 893 if (dev->out_ep->driver_data) { 894 free(dev->out_req->buf); 895 dev->out_req->buf = NULL; 896 usb_ep_free_request(dev->out_ep, dev->out_req); 897 usb_ep_disable(dev->out_ep); 898 dev->out_ep->driver_data = NULL; 899 } 900 901 if (dev->int_ep->driver_data) { 902 usb_ep_disable(dev->int_ep); 903 dev->int_ep->driver_data = NULL; 904 } 905 } 906 907 static int thor_eps_setup(struct usb_function *f) 908 { 909 struct usb_composite_dev *cdev = f->config->cdev; 910 struct usb_gadget *gadget = cdev->gadget; 911 struct thor_dev *dev = thor_func->dev; 912 struct usb_endpoint_descriptor *d; 913 struct usb_request *req; 914 struct usb_ep *ep; 915 int result; 916 917 ep = dev->in_ep; 918 d = ep_desc(gadget, &hs_in_desc, &fs_in_desc); 919 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); 920 921 result = usb_ep_enable(ep, d); 922 if (result) 923 goto exit; 924 925 ep->driver_data = cdev; /* claim */ 926 req = thor_start_ep(ep); 927 if (!req) { 928 usb_ep_disable(ep); 929 result = -EIO; 930 goto exit; 931 } 932 933 dev->in_req = req; 934 ep = dev->out_ep; 935 d = ep_desc(gadget, &hs_out_desc, &fs_out_desc); 936 debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); 937 938 result = usb_ep_enable(ep, d); 939 if (result) 940 goto exit; 941 942 ep->driver_data = cdev; /* claim */ 943 req = thor_start_ep(ep); 944 if (!req) { 945 usb_ep_disable(ep); 946 result = -EIO; 947 goto exit; 948 } 949 950 dev->out_req = req; 951 /* ACM control EP */ 952 ep = dev->int_ep; 953 ep->driver_data = cdev; /* claim */ 954 955 exit: 956 return result; 957 } 958 959 static int thor_func_set_alt(struct usb_function *f, 960 unsigned intf, unsigned alt) 961 { 962 struct thor_dev *dev = thor_func->dev; 963 int result; 964 965 debug("%s: func: %s intf: %d alt: %d\n", 966 __func__, f->name, intf, alt); 967 968 switch (intf) { 969 case 0: 970 debug("ACM INTR interface\n"); 971 break; 972 case 1: 973 debug("Communication Data interface\n"); 974 result = thor_eps_setup(f); 975 if (result) 976 pr_err("%s: EPs setup failed!", __func__); 977 dev->configuration_done = 1; 978 break; 979 } 980 981 return 0; 982 } 983 984 static int thor_func_init(struct usb_configuration *c) 985 { 986 struct f_thor *f_thor; 987 int status; 988 989 debug("%s: cdev: 0x%p\n", __func__, c->cdev); 990 991 f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor)); 992 if (!f_thor) 993 return -ENOMEM; 994 995 memset(f_thor, 0, sizeof(*f_thor)); 996 997 f_thor->usb_function.name = "f_thor"; 998 f_thor->usb_function.bind = thor_func_bind; 999 f_thor->usb_function.unbind = thor_unbind; 1000 f_thor->usb_function.setup = thor_func_setup; 1001 f_thor->usb_function.set_alt = thor_func_set_alt; 1002 f_thor->usb_function.disable = thor_func_disable; 1003 1004 status = usb_add_function(c, &f_thor->usb_function); 1005 if (status) 1006 free(f_thor); 1007 1008 return status; 1009 } 1010 1011 int thor_add(struct usb_configuration *c) 1012 { 1013 debug("%s:\n", __func__); 1014 return thor_func_init(c); 1015 } 1016 1017 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_thor, thor_add); 1018