1/* 2 * driver/usb/gadget/fsl_qe_udc.c 3 * 4 * Copyright (c) 2006-2008 Freescale Semiconductor, Inc. All rights reserved. 5 * 6 * Xie Xiaobo <X.Xie@freescale.com> 7 * Li Yang <leoli@freescale.com> 8 * Based on bareboard code from Shlomi Gridish. 9 * 10 * Description: 11 * Freescle QE/CPM USB Pheripheral Controller Driver 12 * The controller can be found on MPC8360, MPC8272, and etc. 13 * MPC8360 Rev 1.1 may need QE mircocode update 14 * 15 * This program is free software; you can redistribute it and/or modify it 16 * under the terms of the GNU General Public License as published by the 17 * Free Software Foundation; either version 2 of the License, or (at your 18 * option) any later version. 19 */ 20 21#undef USB_TRACE 22 23#include <linux/module.h> 24#include <linux/kernel.h> 25#include <linux/init.h> 26#include <linux/ioport.h> 27#include <linux/types.h> 28#include <linux/errno.h> 29#include <linux/err.h> 30#include <linux/slab.h> 31#include <linux/list.h> 32#include <linux/interrupt.h> 33#include <linux/io.h> 34#include <linux/moduleparam.h> 35#include <linux/of_address.h> 36#include <linux/of_platform.h> 37#include <linux/dma-mapping.h> 38#include <linux/usb/ch9.h> 39#include <linux/usb/gadget.h> 40#include <linux/usb/otg.h> 41#include <asm/qe.h> 42#include <asm/cpm.h> 43#include <asm/dma.h> 44#include <asm/reg.h> 45#include "fsl_qe_udc.h" 46 47#define DRIVER_DESC "Freescale QE/CPM USB Device Controller driver" 48#define DRIVER_AUTHOR "Xie XiaoBo" 49#define DRIVER_VERSION "1.0" 50 51#define DMA_ADDR_INVALID (~(dma_addr_t)0) 52 53static const char driver_name[] = "fsl_qe_udc"; 54static const char driver_desc[] = DRIVER_DESC; 55 56/*ep name is important in gadget, it should obey the convention of ep_match()*/ 57static const char *const ep_name[] = { 58 "ep0-control", /* everyone has ep0 */ 59 /* 3 configurable endpoints */ 60 "ep1", 61 "ep2", 62 "ep3", 63}; 64 65static struct usb_endpoint_descriptor qe_ep0_desc = { 66 .bLength = USB_DT_ENDPOINT_SIZE, 67 .bDescriptorType = USB_DT_ENDPOINT, 68 69 .bEndpointAddress = 0, 70 .bmAttributes = USB_ENDPOINT_XFER_CONTROL, 71 .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD, 72}; 73 74/* it is initialized in probe() */ 75static struct qe_udc *udc_controller; 76 77/******************************************************************** 78 * Internal Used Function Start 79********************************************************************/ 80/*----------------------------------------------------------------- 81 * done() - retire a request; caller blocked irqs 82 *--------------------------------------------------------------*/ 83static void done(struct qe_ep *ep, struct qe_req *req, int status) 84{ 85 struct qe_udc *udc = ep->udc; 86 unsigned char stopped = ep->stopped; 87 88 /* the req->queue pointer is used by ep_queue() func, in which 89 * the request will be added into a udc_ep->queue 'd tail 90 * so here the req will be dropped from the ep->queue 91 */ 92 list_del_init(&req->queue); 93 94 /* req.status should be set as -EINPROGRESS in ep_queue() */ 95 if (req->req.status == -EINPROGRESS) 96 req->req.status = status; 97 else 98 status = req->req.status; 99 100 if (req->mapped) { 101 dma_unmap_single(udc->gadget.dev.parent, 102 req->req.dma, req->req.length, 103 ep_is_in(ep) 104 ? DMA_TO_DEVICE 105 : DMA_FROM_DEVICE); 106 req->req.dma = DMA_ADDR_INVALID; 107 req->mapped = 0; 108 } else 109 dma_sync_single_for_cpu(udc->gadget.dev.parent, 110 req->req.dma, req->req.length, 111 ep_is_in(ep) 112 ? DMA_TO_DEVICE 113 : DMA_FROM_DEVICE); 114 115 if (status && (status != -ESHUTDOWN)) 116 dev_vdbg(udc->dev, "complete %s req %p stat %d len %u/%u\n", 117 ep->ep.name, &req->req, status, 118 req->req.actual, req->req.length); 119 120 /* don't modify queue heads during completion callback */ 121 ep->stopped = 1; 122 spin_unlock(&udc->lock); 123 124 /* this complete() should a func implemented by gadget layer, 125 * eg fsg->bulk_in_complete() */ 126 if (req->req.complete) 127 req->req.complete(&ep->ep, &req->req); 128 129 spin_lock(&udc->lock); 130 131 ep->stopped = stopped; 132} 133 134/*----------------------------------------------------------------- 135 * nuke(): delete all requests related to this ep 136 *--------------------------------------------------------------*/ 137static void nuke(struct qe_ep *ep, int status) 138{ 139 /* Whether this eq has request linked */ 140 while (!list_empty(&ep->queue)) { 141 struct qe_req *req = NULL; 142 req = list_entry(ep->queue.next, struct qe_req, queue); 143 144 done(ep, req, status); 145 } 146} 147 148/*---------------------------------------------------------------------------* 149 * USB and Endpoint manipulate process, include parameter and register * 150 *---------------------------------------------------------------------------*/ 151/* @value: 1--set stall 0--clean stall */ 152static int qe_eprx_stall_change(struct qe_ep *ep, int value) 153{ 154 u16 tem_usep; 155 u8 epnum = ep->epnum; 156 struct qe_udc *udc = ep->udc; 157 158 tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]); 159 tem_usep = tem_usep & ~USB_RHS_MASK; 160 if (value == 1) 161 tem_usep |= USB_RHS_STALL; 162 else if (ep->dir == USB_DIR_IN) 163 tem_usep |= USB_RHS_IGNORE_OUT; 164 165 out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep); 166 return 0; 167} 168 169static int qe_eptx_stall_change(struct qe_ep *ep, int value) 170{ 171 u16 tem_usep; 172 u8 epnum = ep->epnum; 173 struct qe_udc *udc = ep->udc; 174 175 tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]); 176 tem_usep = tem_usep & ~USB_THS_MASK; 177 if (value == 1) 178 tem_usep |= USB_THS_STALL; 179 else if (ep->dir == USB_DIR_OUT) 180 tem_usep |= USB_THS_IGNORE_IN; 181 182 out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep); 183 184 return 0; 185} 186 187static int qe_ep0_stall(struct qe_udc *udc) 188{ 189 qe_eptx_stall_change(&udc->eps[0], 1); 190 qe_eprx_stall_change(&udc->eps[0], 1); 191 udc_controller->ep0_state = WAIT_FOR_SETUP; 192 udc_controller->ep0_dir = 0; 193 return 0; 194} 195 196static int qe_eprx_nack(struct qe_ep *ep) 197{ 198 u8 epnum = ep->epnum; 199 struct qe_udc *udc = ep->udc; 200 201 if (ep->state == EP_STATE_IDLE) { 202 /* Set the ep's nack */ 203 clrsetbits_be16(&udc->usb_regs->usb_usep[epnum], 204 USB_RHS_MASK, USB_RHS_NACK); 205 206 /* Mask Rx and Busy interrupts */ 207 clrbits16(&udc->usb_regs->usb_usbmr, 208 (USB_E_RXB_MASK | USB_E_BSY_MASK)); 209 210 ep->state = EP_STATE_NACK; 211 } 212 return 0; 213} 214 215static int qe_eprx_normal(struct qe_ep *ep) 216{ 217 struct qe_udc *udc = ep->udc; 218 219 if (ep->state == EP_STATE_NACK) { 220 clrsetbits_be16(&udc->usb_regs->usb_usep[ep->epnum], 221 USB_RTHS_MASK, USB_THS_IGNORE_IN); 222 223 /* Unmask RX interrupts */ 224 out_be16(&udc->usb_regs->usb_usber, 225 USB_E_BSY_MASK | USB_E_RXB_MASK); 226 setbits16(&udc->usb_regs->usb_usbmr, 227 (USB_E_RXB_MASK | USB_E_BSY_MASK)); 228 229 ep->state = EP_STATE_IDLE; 230 ep->has_data = 0; 231 } 232 233 return 0; 234} 235 236static int qe_ep_cmd_stoptx(struct qe_ep *ep) 237{ 238 if (ep->udc->soc_type == PORT_CPM) 239 cpm_command(CPM_USB_STOP_TX | (ep->epnum << CPM_USB_EP_SHIFT), 240 CPM_USB_STOP_TX_OPCODE); 241 else 242 qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, 243 ep->epnum, 0); 244 245 return 0; 246} 247 248static int qe_ep_cmd_restarttx(struct qe_ep *ep) 249{ 250 if (ep->udc->soc_type == PORT_CPM) 251 cpm_command(CPM_USB_RESTART_TX | (ep->epnum << 252 CPM_USB_EP_SHIFT), CPM_USB_RESTART_TX_OPCODE); 253 else 254 qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, 255 ep->epnum, 0); 256 257 return 0; 258} 259 260static int qe_ep_flushtxfifo(struct qe_ep *ep) 261{ 262 struct qe_udc *udc = ep->udc; 263 int i; 264 265 i = (int)ep->epnum; 266 267 qe_ep_cmd_stoptx(ep); 268 out_8(&udc->usb_regs->usb_uscom, 269 USB_CMD_FLUSH_FIFO | (USB_CMD_EP_MASK & (ep->epnum))); 270 out_be16(&udc->ep_param[i]->tbptr, in_be16(&udc->ep_param[i]->tbase)); 271 out_be32(&udc->ep_param[i]->tstate, 0); 272 out_be16(&udc->ep_param[i]->tbcnt, 0); 273 274 ep->c_txbd = ep->txbase; 275 ep->n_txbd = ep->txbase; 276 qe_ep_cmd_restarttx(ep); 277 return 0; 278} 279 280static int qe_ep_filltxfifo(struct qe_ep *ep) 281{ 282 struct qe_udc *udc = ep->udc; 283 284 out_8(&udc->usb_regs->usb_uscom, 285 USB_CMD_STR_FIFO | (USB_CMD_EP_MASK & (ep->epnum))); 286 return 0; 287} 288 289static int qe_epbds_reset(struct qe_udc *udc, int pipe_num) 290{ 291 struct qe_ep *ep; 292 u32 bdring_len; 293 struct qe_bd __iomem *bd; 294 int i; 295 296 ep = &udc->eps[pipe_num]; 297 298 if (ep->dir == USB_DIR_OUT) 299 bdring_len = USB_BDRING_LEN_RX; 300 else 301 bdring_len = USB_BDRING_LEN; 302 303 bd = ep->rxbase; 304 for (i = 0; i < (bdring_len - 1); i++) { 305 out_be32((u32 __iomem *)bd, R_E | R_I); 306 bd++; 307 } 308 out_be32((u32 __iomem *)bd, R_E | R_I | R_W); 309 310 bd = ep->txbase; 311 for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) { 312 out_be32(&bd->buf, 0); 313 out_be32((u32 __iomem *)bd, 0); 314 bd++; 315 } 316 out_be32((u32 __iomem *)bd, T_W); 317 318 return 0; 319} 320 321static int qe_ep_reset(struct qe_udc *udc, int pipe_num) 322{ 323 struct qe_ep *ep; 324 u16 tmpusep; 325 326 ep = &udc->eps[pipe_num]; 327 tmpusep = in_be16(&udc->usb_regs->usb_usep[pipe_num]); 328 tmpusep &= ~USB_RTHS_MASK; 329 330 switch (ep->dir) { 331 case USB_DIR_BOTH: 332 qe_ep_flushtxfifo(ep); 333 break; 334 case USB_DIR_OUT: 335 tmpusep |= USB_THS_IGNORE_IN; 336 break; 337 case USB_DIR_IN: 338 qe_ep_flushtxfifo(ep); 339 tmpusep |= USB_RHS_IGNORE_OUT; 340 break; 341 default: 342 break; 343 } 344 out_be16(&udc->usb_regs->usb_usep[pipe_num], tmpusep); 345 346 qe_epbds_reset(udc, pipe_num); 347 348 return 0; 349} 350 351static int qe_ep_toggledata01(struct qe_ep *ep) 352{ 353 ep->data01 ^= 0x1; 354 return 0; 355} 356 357static int qe_ep_bd_init(struct qe_udc *udc, unsigned char pipe_num) 358{ 359 struct qe_ep *ep = &udc->eps[pipe_num]; 360 unsigned long tmp_addr = 0; 361 struct usb_ep_para __iomem *epparam; 362 int i; 363 struct qe_bd __iomem *bd; 364 int bdring_len; 365 366 if (ep->dir == USB_DIR_OUT) 367 bdring_len = USB_BDRING_LEN_RX; 368 else 369 bdring_len = USB_BDRING_LEN; 370 371 epparam = udc->ep_param[pipe_num]; 372 /* alloc multi-ram for BD rings and set the ep parameters */ 373 tmp_addr = cpm_muram_alloc(sizeof(struct qe_bd) * (bdring_len + 374 USB_BDRING_LEN_TX), QE_ALIGNMENT_OF_BD); 375 if (IS_ERR_VALUE(tmp_addr)) 376 return -ENOMEM; 377 378 out_be16(&epparam->rbase, (u16)tmp_addr); 379 out_be16(&epparam->tbase, (u16)(tmp_addr + 380 (sizeof(struct qe_bd) * bdring_len))); 381 382 out_be16(&epparam->rbptr, in_be16(&epparam->rbase)); 383 out_be16(&epparam->tbptr, in_be16(&epparam->tbase)); 384 385 ep->rxbase = cpm_muram_addr(tmp_addr); 386 ep->txbase = cpm_muram_addr(tmp_addr + (sizeof(struct qe_bd) 387 * bdring_len)); 388 ep->n_rxbd = ep->rxbase; 389 ep->e_rxbd = ep->rxbase; 390 ep->n_txbd = ep->txbase; 391 ep->c_txbd = ep->txbase; 392 ep->data01 = 0; /* data0 */ 393 394 /* Init TX and RX bds */ 395 bd = ep->rxbase; 396 for (i = 0; i < bdring_len - 1; i++) { 397 out_be32(&bd->buf, 0); 398 out_be32((u32 __iomem *)bd, 0); 399 bd++; 400 } 401 out_be32(&bd->buf, 0); 402 out_be32((u32 __iomem *)bd, R_W); 403 404 bd = ep->txbase; 405 for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) { 406 out_be32(&bd->buf, 0); 407 out_be32((u32 __iomem *)bd, 0); 408 bd++; 409 } 410 out_be32(&bd->buf, 0); 411 out_be32((u32 __iomem *)bd, T_W); 412 413 return 0; 414} 415 416static int qe_ep_rxbd_update(struct qe_ep *ep) 417{ 418 unsigned int size; 419 int i; 420 unsigned int tmp; 421 struct qe_bd __iomem *bd; 422 unsigned int bdring_len; 423 424 if (ep->rxbase == NULL) 425 return -EINVAL; 426 427 bd = ep->rxbase; 428 429 ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC); 430 if (ep->rxframe == NULL) { 431 dev_err(ep->udc->dev, "malloc rxframe failed\n"); 432 return -ENOMEM; 433 } 434 435 qe_frame_init(ep->rxframe); 436 437 if (ep->dir == USB_DIR_OUT) 438 bdring_len = USB_BDRING_LEN_RX; 439 else 440 bdring_len = USB_BDRING_LEN; 441 442 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1); 443 ep->rxbuffer = kzalloc(size, GFP_ATOMIC); 444 if (ep->rxbuffer == NULL) { 445 dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n", 446 size); 447 kfree(ep->rxframe); 448 return -ENOMEM; 449 } 450 451 ep->rxbuf_d = virt_to_phys((void *)ep->rxbuffer); 452 if (ep->rxbuf_d == DMA_ADDR_INVALID) { 453 ep->rxbuf_d = dma_map_single(udc_controller->gadget.dev.parent, 454 ep->rxbuffer, 455 size, 456 DMA_FROM_DEVICE); 457 ep->rxbufmap = 1; 458 } else { 459 dma_sync_single_for_device(udc_controller->gadget.dev.parent, 460 ep->rxbuf_d, size, 461 DMA_FROM_DEVICE); 462 ep->rxbufmap = 0; 463 } 464 465 size = ep->ep.maxpacket + USB_CRC_SIZE + 2; 466 tmp = ep->rxbuf_d; 467 tmp = (u32)(((tmp >> 2) << 2) + 4); 468 469 for (i = 0; i < bdring_len - 1; i++) { 470 out_be32(&bd->buf, tmp); 471 out_be32((u32 __iomem *)bd, (R_E | R_I)); 472 tmp = tmp + size; 473 bd++; 474 } 475 out_be32(&bd->buf, tmp); 476 out_be32((u32 __iomem *)bd, (R_E | R_I | R_W)); 477 478 return 0; 479} 480 481static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num) 482{ 483 struct qe_ep *ep = &udc->eps[pipe_num]; 484 struct usb_ep_para __iomem *epparam; 485 u16 usep, logepnum; 486 u16 tmp; 487 u8 rtfcr = 0; 488 489 epparam = udc->ep_param[pipe_num]; 490 491 usep = 0; 492 logepnum = (ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 493 usep |= (logepnum << USB_EPNUM_SHIFT); 494 495 switch (ep->desc->bmAttributes & 0x03) { 496 case USB_ENDPOINT_XFER_BULK: 497 usep |= USB_TRANS_BULK; 498 break; 499 case USB_ENDPOINT_XFER_ISOC: 500 usep |= USB_TRANS_ISO; 501 break; 502 case USB_ENDPOINT_XFER_INT: 503 usep |= USB_TRANS_INT; 504 break; 505 default: 506 usep |= USB_TRANS_CTR; 507 break; 508 } 509 510 switch (ep->dir) { 511 case USB_DIR_OUT: 512 usep |= USB_THS_IGNORE_IN; 513 break; 514 case USB_DIR_IN: 515 usep |= USB_RHS_IGNORE_OUT; 516 break; 517 default: 518 break; 519 } 520 out_be16(&udc->usb_regs->usb_usep[pipe_num], usep); 521 522 rtfcr = 0x30; 523 out_8(&epparam->rbmr, rtfcr); 524 out_8(&epparam->tbmr, rtfcr); 525 526 tmp = (u16)(ep->ep.maxpacket + USB_CRC_SIZE); 527 /* MRBLR must be divisble by 4 */ 528 tmp = (u16)(((tmp >> 2) << 2) + 4); 529 out_be16(&epparam->mrblr, tmp); 530 531 return 0; 532} 533 534static int qe_ep_init(struct qe_udc *udc, 535 unsigned char pipe_num, 536 const struct usb_endpoint_descriptor *desc) 537{ 538 struct qe_ep *ep = &udc->eps[pipe_num]; 539 unsigned long flags; 540 int reval = 0; 541 u16 max = 0; 542 543 max = le16_to_cpu(desc->wMaxPacketSize); 544 545 /* check the max package size validate for this endpoint */ 546 /* Refer to USB2.0 spec table 9-13, 547 */ 548 if (pipe_num != 0) { 549 switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 550 case USB_ENDPOINT_XFER_BULK: 551 if (strstr(ep->ep.name, "-iso") 552 || strstr(ep->ep.name, "-int")) 553 goto en_done; 554 switch (udc->gadget.speed) { 555 case USB_SPEED_HIGH: 556 if ((max == 128) || (max == 256) || (max == 512)) 557 break; 558 default: 559 switch (max) { 560 case 4: 561 case 8: 562 case 16: 563 case 32: 564 case 64: 565 break; 566 default: 567 case USB_SPEED_LOW: 568 goto en_done; 569 } 570 } 571 break; 572 case USB_ENDPOINT_XFER_INT: 573 if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ 574 goto en_done; 575 switch (udc->gadget.speed) { 576 case USB_SPEED_HIGH: 577 if (max <= 1024) 578 break; 579 case USB_SPEED_FULL: 580 if (max <= 64) 581 break; 582 default: 583 if (max <= 8) 584 break; 585 goto en_done; 586 } 587 break; 588 case USB_ENDPOINT_XFER_ISOC: 589 if (strstr(ep->ep.name, "-bulk") 590 || strstr(ep->ep.name, "-int")) 591 goto en_done; 592 switch (udc->gadget.speed) { 593 case USB_SPEED_HIGH: 594 if (max <= 1024) 595 break; 596 case USB_SPEED_FULL: 597 if (max <= 1023) 598 break; 599 default: 600 goto en_done; 601 } 602 break; 603 case USB_ENDPOINT_XFER_CONTROL: 604 if (strstr(ep->ep.name, "-iso") 605 || strstr(ep->ep.name, "-int")) 606 goto en_done; 607 switch (udc->gadget.speed) { 608 case USB_SPEED_HIGH: 609 case USB_SPEED_FULL: 610 switch (max) { 611 case 1: 612 case 2: 613 case 4: 614 case 8: 615 case 16: 616 case 32: 617 case 64: 618 break; 619 default: 620 goto en_done; 621 } 622 case USB_SPEED_LOW: 623 switch (max) { 624 case 1: 625 case 2: 626 case 4: 627 case 8: 628 break; 629 default: 630 goto en_done; 631 } 632 default: 633 goto en_done; 634 } 635 break; 636 637 default: 638 goto en_done; 639 } 640 } /* if ep0*/ 641 642 spin_lock_irqsave(&udc->lock, flags); 643 644 /* initialize ep structure */ 645 ep->ep.maxpacket = max; 646 ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); 647 ep->desc = desc; 648 ep->stopped = 0; 649 ep->init = 1; 650 651 if (pipe_num == 0) { 652 ep->dir = USB_DIR_BOTH; 653 udc->ep0_dir = USB_DIR_OUT; 654 udc->ep0_state = WAIT_FOR_SETUP; 655 } else { 656 switch (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { 657 case USB_DIR_OUT: 658 ep->dir = USB_DIR_OUT; 659 break; 660 case USB_DIR_IN: 661 ep->dir = USB_DIR_IN; 662 default: 663 break; 664 } 665 } 666 667 /* hardware special operation */ 668 qe_ep_bd_init(udc, pipe_num); 669 if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_OUT)) { 670 reval = qe_ep_rxbd_update(ep); 671 if (reval) 672 goto en_done1; 673 } 674 675 if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) { 676 ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC); 677 if (ep->txframe == NULL) { 678 dev_err(udc->dev, "malloc txframe failed\n"); 679 goto en_done2; 680 } 681 qe_frame_init(ep->txframe); 682 } 683 684 qe_ep_register_init(udc, pipe_num); 685 686 /* Now HW will be NAKing transfers to that EP, 687 * until a buffer is queued to it. */ 688 spin_unlock_irqrestore(&udc->lock, flags); 689 690 return 0; 691en_done2: 692 kfree(ep->rxbuffer); 693 kfree(ep->rxframe); 694en_done1: 695 spin_unlock_irqrestore(&udc->lock, flags); 696en_done: 697 dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name); 698 return -ENODEV; 699} 700 701static inline void qe_usb_enable(void) 702{ 703 setbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); 704} 705 706static inline void qe_usb_disable(void) 707{ 708 clrbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); 709} 710 711/*----------------------------------------------------------------------------* 712 * USB and EP basic manipulate function end * 713 *----------------------------------------------------------------------------*/ 714 715 716/****************************************************************************** 717 UDC transmit and receive process 718 ******************************************************************************/ 719static void recycle_one_rxbd(struct qe_ep *ep) 720{ 721 u32 bdstatus; 722 723 bdstatus = in_be32((u32 __iomem *)ep->e_rxbd); 724 bdstatus = R_I | R_E | (bdstatus & R_W); 725 out_be32((u32 __iomem *)ep->e_rxbd, bdstatus); 726 727 if (bdstatus & R_W) 728 ep->e_rxbd = ep->rxbase; 729 else 730 ep->e_rxbd++; 731} 732 733static void recycle_rxbds(struct qe_ep *ep, unsigned char stopatnext) 734{ 735 u32 bdstatus; 736 struct qe_bd __iomem *bd, *nextbd; 737 unsigned char stop = 0; 738 739 nextbd = ep->n_rxbd; 740 bd = ep->e_rxbd; 741 bdstatus = in_be32((u32 __iomem *)bd); 742 743 while (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK) && !stop) { 744 bdstatus = R_E | R_I | (bdstatus & R_W); 745 out_be32((u32 __iomem *)bd, bdstatus); 746 747 if (bdstatus & R_W) 748 bd = ep->rxbase; 749 else 750 bd++; 751 752 bdstatus = in_be32((u32 __iomem *)bd); 753 if (stopatnext && (bd == nextbd)) 754 stop = 1; 755 } 756 757 ep->e_rxbd = bd; 758} 759 760static void ep_recycle_rxbds(struct qe_ep *ep) 761{ 762 struct qe_bd __iomem *bd = ep->n_rxbd; 763 u32 bdstatus; 764 u8 epnum = ep->epnum; 765 struct qe_udc *udc = ep->udc; 766 767 bdstatus = in_be32((u32 __iomem *)bd); 768 if (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK)) { 769 bd = ep->rxbase + 770 ((in_be16(&udc->ep_param[epnum]->rbptr) - 771 in_be16(&udc->ep_param[epnum]->rbase)) 772 >> 3); 773 bdstatus = in_be32((u32 __iomem *)bd); 774 775 if (bdstatus & R_W) 776 bd = ep->rxbase; 777 else 778 bd++; 779 780 ep->e_rxbd = bd; 781 recycle_rxbds(ep, 0); 782 ep->e_rxbd = ep->n_rxbd; 783 } else 784 recycle_rxbds(ep, 1); 785 786 if (in_be16(&udc->usb_regs->usb_usber) & USB_E_BSY_MASK) 787 out_be16(&udc->usb_regs->usb_usber, USB_E_BSY_MASK); 788 789 if (ep->has_data <= 0 && (!list_empty(&ep->queue))) 790 qe_eprx_normal(ep); 791 792 ep->localnack = 0; 793} 794 795static void setup_received_handle(struct qe_udc *udc, 796 struct usb_ctrlrequest *setup); 797static int qe_ep_rxframe_handle(struct qe_ep *ep); 798static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req); 799/* when BD PID is setup, handle the packet */ 800static int ep0_setup_handle(struct qe_udc *udc) 801{ 802 struct qe_ep *ep = &udc->eps[0]; 803 struct qe_frame *pframe; 804 unsigned int fsize; 805 u8 *cp; 806 807 pframe = ep->rxframe; 808 if ((frame_get_info(pframe) & PID_SETUP) 809 && (udc->ep0_state == WAIT_FOR_SETUP)) { 810 fsize = frame_get_length(pframe); 811 if (unlikely(fsize != 8)) 812 return -EINVAL; 813 cp = (u8 *)&udc->local_setup_buff; 814 memcpy(cp, pframe->data, fsize); 815 ep->data01 = 1; 816 817 /* handle the usb command base on the usb_ctrlrequest */ 818 setup_received_handle(udc, &udc->local_setup_buff); 819 return 0; 820 } 821 return -EINVAL; 822} 823 824static int qe_ep0_rx(struct qe_udc *udc) 825{ 826 struct qe_ep *ep = &udc->eps[0]; 827 struct qe_frame *pframe; 828 struct qe_bd __iomem *bd; 829 u32 bdstatus, length; 830 u32 vaddr; 831 832 pframe = ep->rxframe; 833 834 if (ep->dir == USB_DIR_IN) { 835 dev_err(udc->dev, "ep0 not a control endpoint\n"); 836 return -EINVAL; 837 } 838 839 bd = ep->n_rxbd; 840 bdstatus = in_be32((u32 __iomem *)bd); 841 length = bdstatus & BD_LENGTH_MASK; 842 843 while (!(bdstatus & R_E) && length) { 844 if ((bdstatus & R_F) && (bdstatus & R_L) 845 && !(bdstatus & R_ERROR)) { 846 if (length == USB_CRC_SIZE) { 847 udc->ep0_state = WAIT_FOR_SETUP; 848 dev_vdbg(udc->dev, 849 "receive a ZLP in status phase\n"); 850 } else { 851 qe_frame_clean(pframe); 852 vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); 853 frame_set_data(pframe, (u8 *)vaddr); 854 frame_set_length(pframe, 855 (length - USB_CRC_SIZE)); 856 frame_set_status(pframe, FRAME_OK); 857 switch (bdstatus & R_PID) { 858 case R_PID_SETUP: 859 frame_set_info(pframe, PID_SETUP); 860 break; 861 case R_PID_DATA1: 862 frame_set_info(pframe, PID_DATA1); 863 break; 864 default: 865 frame_set_info(pframe, PID_DATA0); 866 break; 867 } 868 869 if ((bdstatus & R_PID) == R_PID_SETUP) 870 ep0_setup_handle(udc); 871 else 872 qe_ep_rxframe_handle(ep); 873 } 874 } else { 875 dev_err(udc->dev, "The receive frame with error!\n"); 876 } 877 878 /* note: don't clear the rxbd's buffer address */ 879 recycle_one_rxbd(ep); 880 881 /* Get next BD */ 882 if (bdstatus & R_W) 883 bd = ep->rxbase; 884 else 885 bd++; 886 887 bdstatus = in_be32((u32 __iomem *)bd); 888 length = bdstatus & BD_LENGTH_MASK; 889 890 } 891 892 ep->n_rxbd = bd; 893 894 return 0; 895} 896 897static int qe_ep_rxframe_handle(struct qe_ep *ep) 898{ 899 struct qe_frame *pframe; 900 u8 framepid = 0; 901 unsigned int fsize; 902 u8 *cp; 903 struct qe_req *req; 904 905 pframe = ep->rxframe; 906 907 if (frame_get_info(pframe) & PID_DATA1) 908 framepid = 0x1; 909 910 if (framepid != ep->data01) { 911 dev_err(ep->udc->dev, "the data01 error!\n"); 912 return -EIO; 913 } 914 915 fsize = frame_get_length(pframe); 916 if (list_empty(&ep->queue)) { 917 dev_err(ep->udc->dev, "the %s have no requeue!\n", ep->name); 918 } else { 919 req = list_entry(ep->queue.next, struct qe_req, queue); 920 921 cp = (u8 *)(req->req.buf) + req->req.actual; 922 if (cp) { 923 memcpy(cp, pframe->data, fsize); 924 req->req.actual += fsize; 925 if ((fsize < ep->ep.maxpacket) || 926 (req->req.actual >= req->req.length)) { 927 if (ep->epnum == 0) 928 ep0_req_complete(ep->udc, req); 929 else 930 done(ep, req, 0); 931 if (list_empty(&ep->queue) && ep->epnum != 0) 932 qe_eprx_nack(ep); 933 } 934 } 935 } 936 937 qe_ep_toggledata01(ep); 938 939 return 0; 940} 941 942static void ep_rx_tasklet(unsigned long data) 943{ 944 struct qe_udc *udc = (struct qe_udc *)data; 945 struct qe_ep *ep; 946 struct qe_frame *pframe; 947 struct qe_bd __iomem *bd; 948 unsigned long flags; 949 u32 bdstatus, length; 950 u32 vaddr, i; 951 952 spin_lock_irqsave(&udc->lock, flags); 953 954 for (i = 1; i < USB_MAX_ENDPOINTS; i++) { 955 ep = &udc->eps[i]; 956 957 if (ep->dir == USB_DIR_IN || ep->enable_tasklet == 0) { 958 dev_dbg(udc->dev, 959 "This is a transmit ep or disable tasklet!\n"); 960 continue; 961 } 962 963 pframe = ep->rxframe; 964 bd = ep->n_rxbd; 965 bdstatus = in_be32((u32 __iomem *)bd); 966 length = bdstatus & BD_LENGTH_MASK; 967 968 while (!(bdstatus & R_E) && length) { 969 if (list_empty(&ep->queue)) { 970 qe_eprx_nack(ep); 971 dev_dbg(udc->dev, 972 "The rxep have noreq %d\n", 973 ep->has_data); 974 break; 975 } 976 977 if ((bdstatus & R_F) && (bdstatus & R_L) 978 && !(bdstatus & R_ERROR)) { 979 qe_frame_clean(pframe); 980 vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); 981 frame_set_data(pframe, (u8 *)vaddr); 982 frame_set_length(pframe, 983 (length - USB_CRC_SIZE)); 984 frame_set_status(pframe, FRAME_OK); 985 switch (bdstatus & R_PID) { 986 case R_PID_DATA1: 987 frame_set_info(pframe, PID_DATA1); 988 break; 989 case R_PID_SETUP: 990 frame_set_info(pframe, PID_SETUP); 991 break; 992 default: 993 frame_set_info(pframe, PID_DATA0); 994 break; 995 } 996 /* handle the rx frame */ 997 qe_ep_rxframe_handle(ep); 998 } else { 999 dev_err(udc->dev, 1000 "error in received frame\n"); 1001 } 1002 /* note: don't clear the rxbd's buffer address */ 1003 /*clear the length */ 1004 out_be32((u32 __iomem *)bd, bdstatus & BD_STATUS_MASK); 1005 ep->has_data--; 1006 if (!(ep->localnack)) 1007 recycle_one_rxbd(ep); 1008 1009 /* Get next BD */ 1010 if (bdstatus & R_W) 1011 bd = ep->rxbase; 1012 else 1013 bd++; 1014 1015 bdstatus = in_be32((u32 __iomem *)bd); 1016 length = bdstatus & BD_LENGTH_MASK; 1017 } 1018 1019 ep->n_rxbd = bd; 1020 1021 if (ep->localnack) 1022 ep_recycle_rxbds(ep); 1023 1024 ep->enable_tasklet = 0; 1025 } /* for i=1 */ 1026 1027 spin_unlock_irqrestore(&udc->lock, flags); 1028} 1029 1030static int qe_ep_rx(struct qe_ep *ep) 1031{ 1032 struct qe_udc *udc; 1033 struct qe_frame *pframe; 1034 struct qe_bd __iomem *bd; 1035 u16 swoffs, ucoffs, emptybds; 1036 1037 udc = ep->udc; 1038 pframe = ep->rxframe; 1039 1040 if (ep->dir == USB_DIR_IN) { 1041 dev_err(udc->dev, "transmit ep in rx function\n"); 1042 return -EINVAL; 1043 } 1044 1045 bd = ep->n_rxbd; 1046 1047 swoffs = (u16)(bd - ep->rxbase); 1048 ucoffs = (u16)((in_be16(&udc->ep_param[ep->epnum]->rbptr) - 1049 in_be16(&udc->ep_param[ep->epnum]->rbase)) >> 3); 1050 if (swoffs < ucoffs) 1051 emptybds = USB_BDRING_LEN_RX - ucoffs + swoffs; 1052 else 1053 emptybds = swoffs - ucoffs; 1054 1055 if (emptybds < MIN_EMPTY_BDS) { 1056 qe_eprx_nack(ep); 1057 ep->localnack = 1; 1058 dev_vdbg(udc->dev, "%d empty bds, send NACK\n", emptybds); 1059 } 1060 ep->has_data = USB_BDRING_LEN_RX - emptybds; 1061 1062 if (list_empty(&ep->queue)) { 1063 qe_eprx_nack(ep); 1064 dev_vdbg(udc->dev, "The rxep have no req queued with %d BDs\n", 1065 ep->has_data); 1066 return 0; 1067 } 1068 1069 tasklet_schedule(&udc->rx_tasklet); 1070 ep->enable_tasklet = 1; 1071 1072 return 0; 1073} 1074 1075/* send data from a frame, no matter what tx_req */ 1076static int qe_ep_tx(struct qe_ep *ep, struct qe_frame *frame) 1077{ 1078 struct qe_udc *udc = ep->udc; 1079 struct qe_bd __iomem *bd; 1080 u16 saveusbmr; 1081 u32 bdstatus, pidmask; 1082 u32 paddr; 1083 1084 if (ep->dir == USB_DIR_OUT) { 1085 dev_err(udc->dev, "receive ep passed to tx function\n"); 1086 return -EINVAL; 1087 } 1088 1089 /* Disable the Tx interrupt */ 1090 saveusbmr = in_be16(&udc->usb_regs->usb_usbmr); 1091 out_be16(&udc->usb_regs->usb_usbmr, 1092 saveusbmr & ~(USB_E_TXB_MASK | USB_E_TXE_MASK)); 1093 1094 bd = ep->n_txbd; 1095 bdstatus = in_be32((u32 __iomem *)bd); 1096 1097 if (!(bdstatus & (T_R | BD_LENGTH_MASK))) { 1098 if (frame_get_length(frame) == 0) { 1099 frame_set_data(frame, udc->nullbuf); 1100 frame_set_length(frame, 2); 1101 frame->info |= (ZLP | NO_CRC); 1102 dev_vdbg(udc->dev, "the frame size = 0\n"); 1103 } 1104 paddr = virt_to_phys((void *)frame->data); 1105 out_be32(&bd->buf, paddr); 1106 bdstatus = (bdstatus&T_W); 1107 if (!(frame_get_info(frame) & NO_CRC)) 1108 bdstatus |= T_R | T_I | T_L | T_TC 1109 | frame_get_length(frame); 1110 else 1111 bdstatus |= T_R | T_I | T_L | frame_get_length(frame); 1112 1113 /* if the packet is a ZLP in status phase */ 1114 if ((ep->epnum == 0) && (udc->ep0_state == DATA_STATE_NEED_ZLP)) 1115 ep->data01 = 0x1; 1116 1117 if (ep->data01) { 1118 pidmask = T_PID_DATA1; 1119 frame->info |= PID_DATA1; 1120 } else { 1121 pidmask = T_PID_DATA0; 1122 frame->info |= PID_DATA0; 1123 } 1124 bdstatus |= T_CNF; 1125 bdstatus |= pidmask; 1126 out_be32((u32 __iomem *)bd, bdstatus); 1127 qe_ep_filltxfifo(ep); 1128 1129 /* enable the TX interrupt */ 1130 out_be16(&udc->usb_regs->usb_usbmr, saveusbmr); 1131 1132 qe_ep_toggledata01(ep); 1133 if (bdstatus & T_W) 1134 ep->n_txbd = ep->txbase; 1135 else 1136 ep->n_txbd++; 1137 1138 return 0; 1139 } else { 1140 out_be16(&udc->usb_regs->usb_usbmr, saveusbmr); 1141 dev_vdbg(udc->dev, "The tx bd is not ready!\n"); 1142 return -EBUSY; 1143 } 1144} 1145 1146/* when a bd was transmitted, the function can 1147 * handle the tx_req, not include ep0 */ 1148static int txcomplete(struct qe_ep *ep, unsigned char restart) 1149{ 1150 if (ep->tx_req != NULL) { 1151 if (!restart) { 1152 int asent = ep->last; 1153 ep->sent += asent; 1154 ep->last -= asent; 1155 } else { 1156 ep->last = 0; 1157 } 1158 1159 /* a request already were transmitted completely */ 1160 if ((ep->tx_req->req.length - ep->sent) <= 0) { 1161 ep->tx_req->req.actual = (unsigned int)ep->sent; 1162 done(ep, ep->tx_req, 0); 1163 ep->tx_req = NULL; 1164 ep->last = 0; 1165 ep->sent = 0; 1166 } 1167 } 1168 1169 /* we should gain a new tx_req fot this endpoint */ 1170 if (ep->tx_req == NULL) { 1171 if (!list_empty(&ep->queue)) { 1172 ep->tx_req = list_entry(ep->queue.next, struct qe_req, 1173 queue); 1174 ep->last = 0; 1175 ep->sent = 0; 1176 } 1177 } 1178 1179 return 0; 1180} 1181 1182/* give a frame and a tx_req, send some data */ 1183static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame) 1184{ 1185 unsigned int size; 1186 u8 *buf; 1187 1188 qe_frame_clean(frame); 1189 size = min_t(u32, (ep->tx_req->req.length - ep->sent), 1190 ep->ep.maxpacket); 1191 buf = (u8 *)ep->tx_req->req.buf + ep->sent; 1192 if (buf && size) { 1193 ep->last = size; 1194 frame_set_data(frame, buf); 1195 frame_set_length(frame, size); 1196 frame_set_status(frame, FRAME_OK); 1197 frame_set_info(frame, 0); 1198 return qe_ep_tx(ep, frame); 1199 } 1200 return -EIO; 1201} 1202 1203/* give a frame struct,send a ZLP */ 1204static int sendnulldata(struct qe_ep *ep, struct qe_frame *frame, uint infor) 1205{ 1206 struct qe_udc *udc = ep->udc; 1207 1208 if (frame == NULL) 1209 return -ENODEV; 1210 1211 qe_frame_clean(frame); 1212 frame_set_data(frame, (u8 *)udc->nullbuf); 1213 frame_set_length(frame, 2); 1214 frame_set_status(frame, FRAME_OK); 1215 frame_set_info(frame, (ZLP | NO_CRC | infor)); 1216 1217 return qe_ep_tx(ep, frame); 1218} 1219 1220static int frame_create_tx(struct qe_ep *ep, struct qe_frame *frame) 1221{ 1222 struct qe_req *req = ep->tx_req; 1223 int reval; 1224 1225 if (req == NULL) 1226 return -ENODEV; 1227 1228 if ((req->req.length - ep->sent) > 0) 1229 reval = qe_usb_senddata(ep, frame); 1230 else 1231 reval = sendnulldata(ep, frame, 0); 1232 1233 return reval; 1234} 1235 1236/* if direction is DIR_IN, the status is Device->Host 1237 * if direction is DIR_OUT, the status transaction is Device<-Host 1238 * in status phase, udc create a request and gain status */ 1239static int ep0_prime_status(struct qe_udc *udc, int direction) 1240{ 1241 1242 struct qe_ep *ep = &udc->eps[0]; 1243 1244 if (direction == USB_DIR_IN) { 1245 udc->ep0_state = DATA_STATE_NEED_ZLP; 1246 udc->ep0_dir = USB_DIR_IN; 1247 sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ); 1248 } else { 1249 udc->ep0_dir = USB_DIR_OUT; 1250 udc->ep0_state = WAIT_FOR_OUT_STATUS; 1251 } 1252 1253 return 0; 1254} 1255 1256/* a request complete in ep0, whether gadget request or udc request */ 1257static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req) 1258{ 1259 struct qe_ep *ep = &udc->eps[0]; 1260 /* because usb and ep's status already been set in ch9setaddress() */ 1261 1262 switch (udc->ep0_state) { 1263 case DATA_STATE_XMIT: 1264 done(ep, req, 0); 1265 /* receive status phase */ 1266 if (ep0_prime_status(udc, USB_DIR_OUT)) 1267 qe_ep0_stall(udc); 1268 break; 1269 1270 case DATA_STATE_NEED_ZLP: 1271 done(ep, req, 0); 1272 udc->ep0_state = WAIT_FOR_SETUP; 1273 break; 1274 1275 case DATA_STATE_RECV: 1276 done(ep, req, 0); 1277 /* send status phase */ 1278 if (ep0_prime_status(udc, USB_DIR_IN)) 1279 qe_ep0_stall(udc); 1280 break; 1281 1282 case WAIT_FOR_OUT_STATUS: 1283 done(ep, req, 0); 1284 udc->ep0_state = WAIT_FOR_SETUP; 1285 break; 1286 1287 case WAIT_FOR_SETUP: 1288 dev_vdbg(udc->dev, "Unexpected interrupt\n"); 1289 break; 1290 1291 default: 1292 qe_ep0_stall(udc); 1293 break; 1294 } 1295} 1296 1297static int ep0_txcomplete(struct qe_ep *ep, unsigned char restart) 1298{ 1299 struct qe_req *tx_req = NULL; 1300 struct qe_frame *frame = ep->txframe; 1301 1302 if ((frame_get_info(frame) & (ZLP | NO_REQ)) == (ZLP | NO_REQ)) { 1303 if (!restart) 1304 ep->udc->ep0_state = WAIT_FOR_SETUP; 1305 else 1306 sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ); 1307 return 0; 1308 } 1309 1310 tx_req = ep->tx_req; 1311 if (tx_req != NULL) { 1312 if (!restart) { 1313 int asent = ep->last; 1314 ep->sent += asent; 1315 ep->last -= asent; 1316 } else { 1317 ep->last = 0; 1318 } 1319 1320 /* a request already were transmitted completely */ 1321 if ((ep->tx_req->req.length - ep->sent) <= 0) { 1322 ep->tx_req->req.actual = (unsigned int)ep->sent; 1323 ep0_req_complete(ep->udc, ep->tx_req); 1324 ep->tx_req = NULL; 1325 ep->last = 0; 1326 ep->sent = 0; 1327 } 1328 } else { 1329 dev_vdbg(ep->udc->dev, "the ep0_controller have no req\n"); 1330 } 1331 1332 return 0; 1333} 1334 1335static int ep0_txframe_handle(struct qe_ep *ep) 1336{ 1337 /* if have error, transmit again */ 1338 if (frame_get_status(ep->txframe) & FRAME_ERROR) { 1339 qe_ep_flushtxfifo(ep); 1340 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n"); 1341 if (frame_get_info(ep->txframe) & PID_DATA0) 1342 ep->data01 = 0; 1343 else 1344 ep->data01 = 1; 1345 1346 ep0_txcomplete(ep, 1); 1347 } else 1348 ep0_txcomplete(ep, 0); 1349 1350 frame_create_tx(ep, ep->txframe); 1351 return 0; 1352} 1353 1354static int qe_ep0_txconf(struct qe_ep *ep) 1355{ 1356 struct qe_bd __iomem *bd; 1357 struct qe_frame *pframe; 1358 u32 bdstatus; 1359 1360 bd = ep->c_txbd; 1361 bdstatus = in_be32((u32 __iomem *)bd); 1362 while (!(bdstatus & T_R) && (bdstatus & ~T_W)) { 1363 pframe = ep->txframe; 1364 1365 /* clear and recycle the BD */ 1366 out_be32((u32 __iomem *)bd, bdstatus & T_W); 1367 out_be32(&bd->buf, 0); 1368 if (bdstatus & T_W) 1369 ep->c_txbd = ep->txbase; 1370 else 1371 ep->c_txbd++; 1372 1373 if (ep->c_txbd == ep->n_txbd) { 1374 if (bdstatus & DEVICE_T_ERROR) { 1375 frame_set_status(pframe, FRAME_ERROR); 1376 if (bdstatus & T_TO) 1377 pframe->status |= TX_ER_TIMEOUT; 1378 if (bdstatus & T_UN) 1379 pframe->status |= TX_ER_UNDERUN; 1380 } 1381 ep0_txframe_handle(ep); 1382 } 1383 1384 bd = ep->c_txbd; 1385 bdstatus = in_be32((u32 __iomem *)bd); 1386 } 1387 1388 return 0; 1389} 1390 1391static int ep_txframe_handle(struct qe_ep *ep) 1392{ 1393 if (frame_get_status(ep->txframe) & FRAME_ERROR) { 1394 qe_ep_flushtxfifo(ep); 1395 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n"); 1396 if (frame_get_info(ep->txframe) & PID_DATA0) 1397 ep->data01 = 0; 1398 else 1399 ep->data01 = 1; 1400 1401 txcomplete(ep, 1); 1402 } else 1403 txcomplete(ep, 0); 1404 1405 frame_create_tx(ep, ep->txframe); /* send the data */ 1406 return 0; 1407} 1408 1409/* confirm the already trainsmited bd */ 1410static int qe_ep_txconf(struct qe_ep *ep) 1411{ 1412 struct qe_bd __iomem *bd; 1413 struct qe_frame *pframe = NULL; 1414 u32 bdstatus; 1415 unsigned char breakonrxinterrupt = 0; 1416 1417 bd = ep->c_txbd; 1418 bdstatus = in_be32((u32 __iomem *)bd); 1419 while (!(bdstatus & T_R) && (bdstatus & ~T_W)) { 1420 pframe = ep->txframe; 1421 if (bdstatus & DEVICE_T_ERROR) { 1422 frame_set_status(pframe, FRAME_ERROR); 1423 if (bdstatus & T_TO) 1424 pframe->status |= TX_ER_TIMEOUT; 1425 if (bdstatus & T_UN) 1426 pframe->status |= TX_ER_UNDERUN; 1427 } 1428 1429 /* clear and recycle the BD */ 1430 out_be32((u32 __iomem *)bd, bdstatus & T_W); 1431 out_be32(&bd->buf, 0); 1432 if (bdstatus & T_W) 1433 ep->c_txbd = ep->txbase; 1434 else 1435 ep->c_txbd++; 1436 1437 /* handle the tx frame */ 1438 ep_txframe_handle(ep); 1439 bd = ep->c_txbd; 1440 bdstatus = in_be32((u32 __iomem *)bd); 1441 } 1442 if (breakonrxinterrupt) 1443 return -EIO; 1444 else 1445 return 0; 1446} 1447 1448/* Add a request in queue, and try to transmit a packet */ 1449static int ep_req_send(struct qe_ep *ep, struct qe_req *req) 1450{ 1451 int reval = 0; 1452 1453 if (ep->tx_req == NULL) { 1454 ep->sent = 0; 1455 ep->last = 0; 1456 txcomplete(ep, 0); /* can gain a new tx_req */ 1457 reval = frame_create_tx(ep, ep->txframe); 1458 } 1459 return reval; 1460} 1461 1462/* Maybe this is a good ideal */ 1463static int ep_req_rx(struct qe_ep *ep, struct qe_req *req) 1464{ 1465 struct qe_udc *udc = ep->udc; 1466 struct qe_frame *pframe = NULL; 1467 struct qe_bd __iomem *bd; 1468 u32 bdstatus, length; 1469 u32 vaddr, fsize; 1470 u8 *cp; 1471 u8 finish_req = 0; 1472 u8 framepid; 1473 1474 if (list_empty(&ep->queue)) { 1475 dev_vdbg(udc->dev, "the req already finish!\n"); 1476 return 0; 1477 } 1478 pframe = ep->rxframe; 1479 1480 bd = ep->n_rxbd; 1481 bdstatus = in_be32((u32 __iomem *)bd); 1482 length = bdstatus & BD_LENGTH_MASK; 1483 1484 while (!(bdstatus & R_E) && length) { 1485 if (finish_req) 1486 break; 1487 if ((bdstatus & R_F) && (bdstatus & R_L) 1488 && !(bdstatus & R_ERROR)) { 1489 qe_frame_clean(pframe); 1490 vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); 1491 frame_set_data(pframe, (u8 *)vaddr); 1492 frame_set_length(pframe, (length - USB_CRC_SIZE)); 1493 frame_set_status(pframe, FRAME_OK); 1494 switch (bdstatus & R_PID) { 1495 case R_PID_DATA1: 1496 frame_set_info(pframe, PID_DATA1); break; 1497 default: 1498 frame_set_info(pframe, PID_DATA0); break; 1499 } 1500 /* handle the rx frame */ 1501 1502 if (frame_get_info(pframe) & PID_DATA1) 1503 framepid = 0x1; 1504 else 1505 framepid = 0; 1506 1507 if (framepid != ep->data01) { 1508 dev_vdbg(udc->dev, "the data01 error!\n"); 1509 } else { 1510 fsize = frame_get_length(pframe); 1511 1512 cp = (u8 *)(req->req.buf) + req->req.actual; 1513 if (cp) { 1514 memcpy(cp, pframe->data, fsize); 1515 req->req.actual += fsize; 1516 if ((fsize < ep->ep.maxpacket) 1517 || (req->req.actual >= 1518 req->req.length)) { 1519 finish_req = 1; 1520 done(ep, req, 0); 1521 if (list_empty(&ep->queue)) 1522 qe_eprx_nack(ep); 1523 } 1524 } 1525 qe_ep_toggledata01(ep); 1526 } 1527 } else { 1528 dev_err(udc->dev, "The receive frame with error!\n"); 1529 } 1530 1531 /* note: don't clear the rxbd's buffer address * 1532 * only Clear the length */ 1533 out_be32((u32 __iomem *)bd, (bdstatus & BD_STATUS_MASK)); 1534 ep->has_data--; 1535 1536 /* Get next BD */ 1537 if (bdstatus & R_W) 1538 bd = ep->rxbase; 1539 else 1540 bd++; 1541 1542 bdstatus = in_be32((u32 __iomem *)bd); 1543 length = bdstatus & BD_LENGTH_MASK; 1544 } 1545 1546 ep->n_rxbd = bd; 1547 ep_recycle_rxbds(ep); 1548 1549 return 0; 1550} 1551 1552/* only add the request in queue */ 1553static int ep_req_receive(struct qe_ep *ep, struct qe_req *req) 1554{ 1555 if (ep->state == EP_STATE_NACK) { 1556 if (ep->has_data <= 0) { 1557 /* Enable rx and unmask rx interrupt */ 1558 qe_eprx_normal(ep); 1559 } else { 1560 /* Copy the exist BD data */ 1561 ep_req_rx(ep, req); 1562 } 1563 } 1564 1565 return 0; 1566} 1567 1568/******************************************************************** 1569 Internal Used Function End 1570********************************************************************/ 1571 1572/*----------------------------------------------------------------------- 1573 Endpoint Management Functions For Gadget 1574 -----------------------------------------------------------------------*/ 1575static int qe_ep_enable(struct usb_ep *_ep, 1576 const struct usb_endpoint_descriptor *desc) 1577{ 1578 struct qe_udc *udc; 1579 struct qe_ep *ep; 1580 int retval = 0; 1581 unsigned char epnum; 1582 1583 ep = container_of(_ep, struct qe_ep, ep); 1584 1585 /* catch various bogus parameters */ 1586 if (!_ep || !desc || ep->desc || _ep->name == ep_name[0] || 1587 (desc->bDescriptorType != USB_DT_ENDPOINT)) 1588 return -EINVAL; 1589 1590 udc = ep->udc; 1591 if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN)) 1592 return -ESHUTDOWN; 1593 1594 epnum = (u8)desc->bEndpointAddress & 0xF; 1595 1596 retval = qe_ep_init(udc, epnum, desc); 1597 if (retval != 0) { 1598 cpm_muram_free(cpm_muram_offset(ep->rxbase)); 1599 dev_dbg(udc->dev, "enable ep%d failed\n", ep->epnum); 1600 return -EINVAL; 1601 } 1602 dev_dbg(udc->dev, "enable ep%d successful\n", ep->epnum); 1603 return 0; 1604} 1605 1606static int qe_ep_disable(struct usb_ep *_ep) 1607{ 1608 struct qe_udc *udc; 1609 struct qe_ep *ep; 1610 unsigned long flags; 1611 unsigned int size; 1612 1613 ep = container_of(_ep, struct qe_ep, ep); 1614 udc = ep->udc; 1615 1616 if (!_ep || !ep->desc) { 1617 dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL); 1618 return -EINVAL; 1619 } 1620 1621 spin_lock_irqsave(&udc->lock, flags); 1622 /* Nuke all pending requests (does flush) */ 1623 nuke(ep, -ESHUTDOWN); 1624 ep->desc = NULL; 1625 ep->stopped = 1; 1626 ep->tx_req = NULL; 1627 qe_ep_reset(udc, ep->epnum); 1628 spin_unlock_irqrestore(&udc->lock, flags); 1629 1630 cpm_muram_free(cpm_muram_offset(ep->rxbase)); 1631 1632 if (ep->dir == USB_DIR_OUT) 1633 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * 1634 (USB_BDRING_LEN_RX + 1); 1635 else 1636 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * 1637 (USB_BDRING_LEN + 1); 1638 1639 if (ep->dir != USB_DIR_IN) { 1640 kfree(ep->rxframe); 1641 if (ep->rxbufmap) { 1642 dma_unmap_single(udc_controller->gadget.dev.parent, 1643 ep->rxbuf_d, size, 1644 DMA_FROM_DEVICE); 1645 ep->rxbuf_d = DMA_ADDR_INVALID; 1646 } else { 1647 dma_sync_single_for_cpu( 1648 udc_controller->gadget.dev.parent, 1649 ep->rxbuf_d, size, 1650 DMA_FROM_DEVICE); 1651 } 1652 kfree(ep->rxbuffer); 1653 } 1654 1655 if (ep->dir != USB_DIR_OUT) 1656 kfree(ep->txframe); 1657 1658 dev_dbg(udc->dev, "disabled %s OK\n", _ep->name); 1659 return 0; 1660} 1661 1662static struct usb_request *qe_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) 1663{ 1664 struct qe_req *req; 1665 1666 req = kzalloc(sizeof(*req), gfp_flags); 1667 if (!req) 1668 return NULL; 1669 1670 req->req.dma = DMA_ADDR_INVALID; 1671 1672 INIT_LIST_HEAD(&req->queue); 1673 1674 return &req->req; 1675} 1676 1677static void qe_free_request(struct usb_ep *_ep, struct usb_request *_req) 1678{ 1679 struct qe_req *req; 1680 1681 req = container_of(_req, struct qe_req, req); 1682 1683 if (_req) 1684 kfree(req); 1685} 1686 1687static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req) 1688{ 1689 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); 1690 struct qe_req *req = container_of(_req, struct qe_req, req); 1691 struct qe_udc *udc; 1692 int reval; 1693 1694 udc = ep->udc; 1695 /* catch various bogus parameters */ 1696 if (!_req || !req->req.complete || !req->req.buf 1697 || !list_empty(&req->queue)) { 1698 dev_dbg(udc->dev, "bad params\n"); 1699 return -EINVAL; 1700 } 1701 if (!_ep || (!ep->desc && ep_index(ep))) { 1702 dev_dbg(udc->dev, "bad ep\n"); 1703 return -EINVAL; 1704 } 1705 1706 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) 1707 return -ESHUTDOWN; 1708 1709 req->ep = ep; 1710 1711 /* map virtual address to hardware */ 1712 if (req->req.dma == DMA_ADDR_INVALID) { 1713 req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, 1714 req->req.buf, 1715 req->req.length, 1716 ep_is_in(ep) 1717 ? DMA_TO_DEVICE : 1718 DMA_FROM_DEVICE); 1719 req->mapped = 1; 1720 } else { 1721 dma_sync_single_for_device(ep->udc->gadget.dev.parent, 1722 req->req.dma, req->req.length, 1723 ep_is_in(ep) 1724 ? DMA_TO_DEVICE : 1725 DMA_FROM_DEVICE); 1726 req->mapped = 0; 1727 } 1728 1729 req->req.status = -EINPROGRESS; 1730 req->req.actual = 0; 1731 1732 list_add_tail(&req->queue, &ep->queue); 1733 dev_vdbg(udc->dev, "gadget have request in %s! %d\n", 1734 ep->name, req->req.length); 1735 1736 /* push the request to device */ 1737 if (ep_is_in(ep)) 1738 reval = ep_req_send(ep, req); 1739 1740 /* EP0 */ 1741 if (ep_index(ep) == 0 && req->req.length > 0) { 1742 if (ep_is_in(ep)) 1743 udc->ep0_state = DATA_STATE_XMIT; 1744 else 1745 udc->ep0_state = DATA_STATE_RECV; 1746 } 1747 1748 if (ep->dir == USB_DIR_OUT) 1749 reval = ep_req_receive(ep, req); 1750 1751 return 0; 1752} 1753 1754/* queues (submits) an I/O request to an endpoint */ 1755static int qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req, 1756 gfp_t gfp_flags) 1757{ 1758 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); 1759 struct qe_udc *udc = ep->udc; 1760 unsigned long flags; 1761 int ret; 1762 1763 spin_lock_irqsave(&udc->lock, flags); 1764 ret = __qe_ep_queue(_ep, _req); 1765 spin_unlock_irqrestore(&udc->lock, flags); 1766 return ret; 1767} 1768 1769/* dequeues (cancels, unlinks) an I/O request from an endpoint */ 1770static int qe_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) 1771{ 1772 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); 1773 struct qe_req *req; 1774 unsigned long flags; 1775 1776 if (!_ep || !_req) 1777 return -EINVAL; 1778 1779 spin_lock_irqsave(&ep->udc->lock, flags); 1780 1781 /* make sure it's actually queued on this endpoint */ 1782 list_for_each_entry(req, &ep->queue, queue) { 1783 if (&req->req == _req) 1784 break; 1785 } 1786 1787 if (&req->req != _req) { 1788 spin_unlock_irqrestore(&ep->udc->lock, flags); 1789 return -EINVAL; 1790 } 1791 1792 done(ep, req, -ECONNRESET); 1793 1794 spin_unlock_irqrestore(&ep->udc->lock, flags); 1795 return 0; 1796} 1797 1798/*----------------------------------------------------------------- 1799 * modify the endpoint halt feature 1800 * @ep: the non-isochronous endpoint being stalled 1801 * @value: 1--set halt 0--clear halt 1802 * Returns zero, or a negative error code. 1803*----------------------------------------------------------------*/ 1804static int qe_ep_set_halt(struct usb_ep *_ep, int value) 1805{ 1806 struct qe_ep *ep; 1807 unsigned long flags; 1808 int status = -EOPNOTSUPP; 1809 struct qe_udc *udc; 1810 1811 ep = container_of(_ep, struct qe_ep, ep); 1812 if (!_ep || !ep->desc) { 1813 status = -EINVAL; 1814 goto out; 1815 } 1816 1817 udc = ep->udc; 1818 /* Attempt to halt IN ep will fail if any transfer requests 1819 * are still queue */ 1820 if (value && ep_is_in(ep) && !list_empty(&ep->queue)) { 1821 status = -EAGAIN; 1822 goto out; 1823 } 1824 1825 status = 0; 1826 spin_lock_irqsave(&ep->udc->lock, flags); 1827 qe_eptx_stall_change(ep, value); 1828 qe_eprx_stall_change(ep, value); 1829 spin_unlock_irqrestore(&ep->udc->lock, flags); 1830 1831 if (ep->epnum == 0) { 1832 udc->ep0_state = WAIT_FOR_SETUP; 1833 udc->ep0_dir = 0; 1834 } 1835 1836 /* set data toggle to DATA0 on clear halt */ 1837 if (value == 0) 1838 ep->data01 = 0; 1839out: 1840 dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name, 1841 value ? "set" : "clear", status); 1842 1843 return status; 1844} 1845 1846static struct usb_ep_ops qe_ep_ops = { 1847 .enable = qe_ep_enable, 1848 .disable = qe_ep_disable, 1849 1850 .alloc_request = qe_alloc_request, 1851 .free_request = qe_free_request, 1852 1853 .queue = qe_ep_queue, 1854 .dequeue = qe_ep_dequeue, 1855 1856 .set_halt = qe_ep_set_halt, 1857}; 1858 1859/*------------------------------------------------------------------------ 1860 Gadget Driver Layer Operations 1861 ------------------------------------------------------------------------*/ 1862 1863/* Get the current frame number */ 1864static int qe_get_frame(struct usb_gadget *gadget) 1865{ 1866 u16 tmp; 1867 1868 tmp = in_be16(&udc_controller->usb_param->frame_n); 1869 if (tmp & 0x8000) 1870 tmp = tmp & 0x07ff; 1871 else 1872 tmp = -EINVAL; 1873 1874 return (int)tmp; 1875} 1876 1877/* Tries to wake up the host connected to this gadget 1878 * 1879 * Return : 0-success 1880 * Negative-this feature not enabled by host or not supported by device hw 1881 */ 1882static int qe_wakeup(struct usb_gadget *gadget) 1883{ 1884 return -ENOTSUPP; 1885} 1886 1887/* Notify controller that VBUS is powered, Called by whatever 1888 detects VBUS sessions */ 1889static int qe_vbus_session(struct usb_gadget *gadget, int is_active) 1890{ 1891 return -ENOTSUPP; 1892} 1893 1894/* constrain controller's VBUS power usage 1895 * This call is used by gadget drivers during SET_CONFIGURATION calls, 1896 * reporting how much power the device may consume. For example, this 1897 * could affect how quickly batteries are recharged. 1898 * 1899 * Returns zero on success, else negative errno. 1900 */ 1901static int qe_vbus_draw(struct usb_gadget *gadget, unsigned mA) 1902{ 1903 return -ENOTSUPP; 1904} 1905 1906/* Change Data+ pullup status 1907 * this func is used by usb_gadget_connect/disconnect 1908 */ 1909static int qe_pullup(struct usb_gadget *gadget, int is_on) 1910{ 1911 return -ENOTSUPP; 1912} 1913 1914/* defined in usb_gadget.h */ 1915static struct usb_gadget_ops qe_gadget_ops = { 1916 .get_frame = qe_get_frame, 1917 .wakeup = qe_wakeup, 1918/* .set_selfpowered = qe_set_selfpowered,*/ /* always selfpowered */ 1919 .vbus_session = qe_vbus_session, 1920 .vbus_draw = qe_vbus_draw, 1921 .pullup = qe_pullup, 1922}; 1923 1924/*------------------------------------------------------------------------- 1925 USB ep0 Setup process in BUS Enumeration 1926 -------------------------------------------------------------------------*/ 1927static int udc_reset_ep_queue(struct qe_udc *udc, u8 pipe) 1928{ 1929 struct qe_ep *ep = &udc->eps[pipe]; 1930 1931 nuke(ep, -ECONNRESET); 1932 ep->tx_req = NULL; 1933 return 0; 1934} 1935 1936static int reset_queues(struct qe_udc *udc) 1937{ 1938 u8 pipe; 1939 1940 for (pipe = 0; pipe < USB_MAX_ENDPOINTS; pipe++) 1941 udc_reset_ep_queue(udc, pipe); 1942 1943 /* report disconnect; the driver is already quiesced */ 1944 spin_unlock(&udc->lock); 1945 udc->driver->disconnect(&udc->gadget); 1946 spin_lock(&udc->lock); 1947 1948 return 0; 1949} 1950 1951static void ch9setaddress(struct qe_udc *udc, u16 value, u16 index, 1952 u16 length) 1953{ 1954 /* Save the new address to device struct */ 1955 udc->device_address = (u8) value; 1956 /* Update usb state */ 1957 udc->usb_state = USB_STATE_ADDRESS; 1958 1959 /* Status phase , send a ZLP */ 1960 if (ep0_prime_status(udc, USB_DIR_IN)) 1961 qe_ep0_stall(udc); 1962} 1963 1964static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req) 1965{ 1966 struct qe_req *req = container_of(_req, struct qe_req, req); 1967 1968 req->req.buf = NULL; 1969 kfree(req); 1970} 1971 1972static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value, 1973 u16 index, u16 length) 1974{ 1975 u16 usb_status = 0; 1976 struct qe_req *req; 1977 struct qe_ep *ep; 1978 int status = 0; 1979 1980 ep = &udc->eps[0]; 1981 if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { 1982 /* Get device status */ 1983 usb_status = 1 << USB_DEVICE_SELF_POWERED; 1984 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { 1985 /* Get interface status */ 1986 /* We don't have interface information in udc driver */ 1987 usb_status = 0; 1988 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { 1989 /* Get endpoint status */ 1990 int pipe = index & USB_ENDPOINT_NUMBER_MASK; 1991 struct qe_ep *target_ep = &udc->eps[pipe]; 1992 u16 usep; 1993 1994 /* stall if endpoint doesn't exist */ 1995 if (!target_ep->desc) 1996 goto stall; 1997 1998 usep = in_be16(&udc->usb_regs->usb_usep[pipe]); 1999 if (index & USB_DIR_IN) { 2000 if (target_ep->dir != USB_DIR_IN) 2001 goto stall; 2002 if ((usep & USB_THS_MASK) == USB_THS_STALL) 2003 usb_status = 1 << USB_ENDPOINT_HALT; 2004 } else { 2005 if (target_ep->dir != USB_DIR_OUT) 2006 goto stall; 2007 if ((usep & USB_RHS_MASK) == USB_RHS_STALL) 2008 usb_status = 1 << USB_ENDPOINT_HALT; 2009 } 2010 } 2011 2012 req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL), 2013 struct qe_req, req); 2014 req->req.length = 2; 2015 req->req.buf = udc->statusbuf; 2016 *(u16 *)req->req.buf = cpu_to_le16(usb_status); 2017 req->req.status = -EINPROGRESS; 2018 req->req.actual = 0; 2019 req->req.complete = ownercomplete; 2020 2021 udc->ep0_dir = USB_DIR_IN; 2022 2023 /* data phase */ 2024 status = __qe_ep_queue(&ep->ep, &req->req); 2025 2026 if (status == 0) 2027 return; 2028stall: 2029 dev_err(udc->dev, "Can't respond to getstatus request \n"); 2030 qe_ep0_stall(udc); 2031} 2032 2033/* only handle the setup request, suppose the device in normal status */ 2034static void setup_received_handle(struct qe_udc *udc, 2035 struct usb_ctrlrequest *setup) 2036{ 2037 /* Fix Endian (udc->local_setup_buff is cpu Endian now)*/ 2038 u16 wValue = le16_to_cpu(setup->wValue); 2039 u16 wIndex = le16_to_cpu(setup->wIndex); 2040 u16 wLength = le16_to_cpu(setup->wLength); 2041 2042 /* clear the previous request in the ep0 */ 2043 udc_reset_ep_queue(udc, 0); 2044 2045 if (setup->bRequestType & USB_DIR_IN) 2046 udc->ep0_dir = USB_DIR_IN; 2047 else 2048 udc->ep0_dir = USB_DIR_OUT; 2049 2050 switch (setup->bRequest) { 2051 case USB_REQ_GET_STATUS: 2052 /* Data+Status phase form udc */ 2053 if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) 2054 != (USB_DIR_IN | USB_TYPE_STANDARD)) 2055 break; 2056 ch9getstatus(udc, setup->bRequestType, wValue, wIndex, 2057 wLength); 2058 return; 2059 2060 case USB_REQ_SET_ADDRESS: 2061 /* Status phase from udc */ 2062 if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD | 2063 USB_RECIP_DEVICE)) 2064 break; 2065 ch9setaddress(udc, wValue, wIndex, wLength); 2066 return; 2067 2068 case USB_REQ_CLEAR_FEATURE: 2069 case USB_REQ_SET_FEATURE: 2070 /* Requests with no data phase, status phase from udc */ 2071 if ((setup->bRequestType & USB_TYPE_MASK) 2072 != USB_TYPE_STANDARD) 2073 break; 2074 2075 if ((setup->bRequestType & USB_RECIP_MASK) 2076 == USB_RECIP_ENDPOINT) { 2077 int pipe = wIndex & USB_ENDPOINT_NUMBER_MASK; 2078 struct qe_ep *ep; 2079 2080 if (wValue != 0 || wLength != 0 2081 || pipe > USB_MAX_ENDPOINTS) 2082 break; 2083 ep = &udc->eps[pipe]; 2084 2085 spin_unlock(&udc->lock); 2086 qe_ep_set_halt(&ep->ep, 2087 (setup->bRequest == USB_REQ_SET_FEATURE) 2088 ? 1 : 0); 2089 spin_lock(&udc->lock); 2090 } 2091 2092 ep0_prime_status(udc, USB_DIR_IN); 2093 2094 return; 2095 2096 default: 2097 break; 2098 } 2099 2100 if (wLength) { 2101 /* Data phase from gadget, status phase from udc */ 2102 if (setup->bRequestType & USB_DIR_IN) { 2103 udc->ep0_state = DATA_STATE_XMIT; 2104 udc->ep0_dir = USB_DIR_IN; 2105 } else { 2106 udc->ep0_state = DATA_STATE_RECV; 2107 udc->ep0_dir = USB_DIR_OUT; 2108 } 2109 spin_unlock(&udc->lock); 2110 if (udc->driver->setup(&udc->gadget, 2111 &udc->local_setup_buff) < 0) 2112 qe_ep0_stall(udc); 2113 spin_lock(&udc->lock); 2114 } else { 2115 /* No data phase, IN status from gadget */ 2116 udc->ep0_dir = USB_DIR_IN; 2117 spin_unlock(&udc->lock); 2118 if (udc->driver->setup(&udc->gadget, 2119 &udc->local_setup_buff) < 0) 2120 qe_ep0_stall(udc); 2121 spin_lock(&udc->lock); 2122 udc->ep0_state = DATA_STATE_NEED_ZLP; 2123 } 2124} 2125 2126/*------------------------------------------------------------------------- 2127 USB Interrupt handlers 2128 -------------------------------------------------------------------------*/ 2129static void suspend_irq(struct qe_udc *udc) 2130{ 2131 udc->resume_state = udc->usb_state; 2132 udc->usb_state = USB_STATE_SUSPENDED; 2133 2134 /* report suspend to the driver ,serial.c not support this*/ 2135 if (udc->driver->suspend) 2136 udc->driver->suspend(&udc->gadget); 2137} 2138 2139static void resume_irq(struct qe_udc *udc) 2140{ 2141 udc->usb_state = udc->resume_state; 2142 udc->resume_state = 0; 2143 2144 /* report resume to the driver , serial.c not support this*/ 2145 if (udc->driver->resume) 2146 udc->driver->resume(&udc->gadget); 2147} 2148 2149static void idle_irq(struct qe_udc *udc) 2150{ 2151 u8 usbs; 2152 2153 usbs = in_8(&udc->usb_regs->usb_usbs); 2154 if (usbs & USB_IDLE_STATUS_MASK) { 2155 if ((udc->usb_state) != USB_STATE_SUSPENDED) 2156 suspend_irq(udc); 2157 } else { 2158 if (udc->usb_state == USB_STATE_SUSPENDED) 2159 resume_irq(udc); 2160 } 2161} 2162 2163static int reset_irq(struct qe_udc *udc) 2164{ 2165 unsigned char i; 2166 2167 if (udc->usb_state == USB_STATE_DEFAULT) 2168 return 0; 2169 2170 qe_usb_disable(); 2171 out_8(&udc->usb_regs->usb_usadr, 0); 2172 2173 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 2174 if (udc->eps[i].init) 2175 qe_ep_reset(udc, i); 2176 } 2177 2178 reset_queues(udc); 2179 udc->usb_state = USB_STATE_DEFAULT; 2180 udc->ep0_state = WAIT_FOR_SETUP; 2181 udc->ep0_dir = USB_DIR_OUT; 2182 qe_usb_enable(); 2183 return 0; 2184} 2185 2186static int bsy_irq(struct qe_udc *udc) 2187{ 2188 return 0; 2189} 2190 2191static int txe_irq(struct qe_udc *udc) 2192{ 2193 return 0; 2194} 2195 2196/* ep0 tx interrupt also in here */ 2197static int tx_irq(struct qe_udc *udc) 2198{ 2199 struct qe_ep *ep; 2200 struct qe_bd __iomem *bd; 2201 int i, res = 0; 2202 2203 if ((udc->usb_state == USB_STATE_ADDRESS) 2204 && (in_8(&udc->usb_regs->usb_usadr) == 0)) 2205 out_8(&udc->usb_regs->usb_usadr, udc->device_address); 2206 2207 for (i = (USB_MAX_ENDPOINTS-1); ((i >= 0) && (res == 0)); i--) { 2208 ep = &udc->eps[i]; 2209 if (ep && ep->init && (ep->dir != USB_DIR_OUT)) { 2210 bd = ep->c_txbd; 2211 if (!(in_be32((u32 __iomem *)bd) & T_R) 2212 && (in_be32(&bd->buf))) { 2213 /* confirm the transmitted bd */ 2214 if (ep->epnum == 0) 2215 res = qe_ep0_txconf(ep); 2216 else 2217 res = qe_ep_txconf(ep); 2218 } 2219 } 2220 } 2221 return res; 2222} 2223 2224 2225/* setup packect's rx is handle in the function too */ 2226static void rx_irq(struct qe_udc *udc) 2227{ 2228 struct qe_ep *ep; 2229 struct qe_bd __iomem *bd; 2230 int i; 2231 2232 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 2233 ep = &udc->eps[i]; 2234 if (ep && ep->init && (ep->dir != USB_DIR_IN)) { 2235 bd = ep->n_rxbd; 2236 if (!(in_be32((u32 __iomem *)bd) & R_E) 2237 && (in_be32(&bd->buf))) { 2238 if (ep->epnum == 0) { 2239 qe_ep0_rx(udc); 2240 } else { 2241 /*non-setup package receive*/ 2242 qe_ep_rx(ep); 2243 } 2244 } 2245 } 2246 } 2247} 2248 2249static irqreturn_t qe_udc_irq(int irq, void *_udc) 2250{ 2251 struct qe_udc *udc = (struct qe_udc *)_udc; 2252 u16 irq_src; 2253 irqreturn_t status = IRQ_NONE; 2254 unsigned long flags; 2255 2256 spin_lock_irqsave(&udc->lock, flags); 2257 2258 irq_src = in_be16(&udc->usb_regs->usb_usber) & 2259 in_be16(&udc->usb_regs->usb_usbmr); 2260 /* Clear notification bits */ 2261 out_be16(&udc->usb_regs->usb_usber, irq_src); 2262 /* USB Interrupt */ 2263 if (irq_src & USB_E_IDLE_MASK) { 2264 idle_irq(udc); 2265 irq_src &= ~USB_E_IDLE_MASK; 2266 status = IRQ_HANDLED; 2267 } 2268 2269 if (irq_src & USB_E_TXB_MASK) { 2270 tx_irq(udc); 2271 irq_src &= ~USB_E_TXB_MASK; 2272 status = IRQ_HANDLED; 2273 } 2274 2275 if (irq_src & USB_E_RXB_MASK) { 2276 rx_irq(udc); 2277 irq_src &= ~USB_E_RXB_MASK; 2278 status = IRQ_HANDLED; 2279 } 2280 2281 if (irq_src & USB_E_RESET_MASK) { 2282 reset_irq(udc); 2283 irq_src &= ~USB_E_RESET_MASK; 2284 status = IRQ_HANDLED; 2285 } 2286 2287 if (irq_src & USB_E_BSY_MASK) { 2288 bsy_irq(udc); 2289 irq_src &= ~USB_E_BSY_MASK; 2290 status = IRQ_HANDLED; 2291 } 2292 2293 if (irq_src & USB_E_TXE_MASK) { 2294 txe_irq(udc); 2295 irq_src &= ~USB_E_TXE_MASK; 2296 status = IRQ_HANDLED; 2297 } 2298 2299 spin_unlock_irqrestore(&udc->lock, flags); 2300 2301 return status; 2302} 2303 2304/*------------------------------------------------------------------------- 2305 Gadget driver register and unregister. 2306 --------------------------------------------------------------------------*/ 2307int usb_gadget_register_driver(struct usb_gadget_driver *driver) 2308{ 2309 int retval; 2310 unsigned long flags = 0; 2311 2312 /* standard operations */ 2313 if (!udc_controller) 2314 return -ENODEV; 2315 2316 if (!driver || (driver->speed != USB_SPEED_FULL 2317 && driver->speed != USB_SPEED_HIGH) 2318 || !driver->bind || !driver->disconnect 2319 || !driver->setup) 2320 return -EINVAL; 2321 2322 if (udc_controller->driver) 2323 return -EBUSY; 2324 2325 /* lock is needed but whether should use this lock or another */ 2326 spin_lock_irqsave(&udc_controller->lock, flags); 2327 2328 driver->driver.bus = NULL; 2329 /* hook up the driver */ 2330 udc_controller->driver = driver; 2331 udc_controller->gadget.dev.driver = &driver->driver; 2332 udc_controller->gadget.speed = (enum usb_device_speed)(driver->speed); 2333 spin_unlock_irqrestore(&udc_controller->lock, flags); 2334 2335 retval = driver->bind(&udc_controller->gadget); 2336 if (retval) { 2337 dev_err(udc_controller->dev, "bind to %s --> %d", 2338 driver->driver.name, retval); 2339 udc_controller->gadget.dev.driver = NULL; 2340 udc_controller->driver = NULL; 2341 return retval; 2342 } 2343 2344 /* Enable IRQ reg and Set usbcmd reg EN bit */ 2345 qe_usb_enable(); 2346 2347 out_be16(&udc_controller->usb_regs->usb_usber, 0xffff); 2348 out_be16(&udc_controller->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE); 2349 udc_controller->usb_state = USB_STATE_ATTACHED; 2350 udc_controller->ep0_state = WAIT_FOR_SETUP; 2351 udc_controller->ep0_dir = USB_DIR_OUT; 2352 dev_info(udc_controller->dev, "%s bind to driver %s \n", 2353 udc_controller->gadget.name, driver->driver.name); 2354 return 0; 2355} 2356EXPORT_SYMBOL(usb_gadget_register_driver); 2357 2358int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) 2359{ 2360 struct qe_ep *loop_ep; 2361 unsigned long flags; 2362 2363 if (!udc_controller) 2364 return -ENODEV; 2365 2366 if (!driver || driver != udc_controller->driver) 2367 return -EINVAL; 2368 2369 /* stop usb controller, disable intr */ 2370 qe_usb_disable(); 2371 2372 /* in fact, no needed */ 2373 udc_controller->usb_state = USB_STATE_ATTACHED; 2374 udc_controller->ep0_state = WAIT_FOR_SETUP; 2375 udc_controller->ep0_dir = 0; 2376 2377 /* stand operation */ 2378 spin_lock_irqsave(&udc_controller->lock, flags); 2379 udc_controller->gadget.speed = USB_SPEED_UNKNOWN; 2380 nuke(&udc_controller->eps[0], -ESHUTDOWN); 2381 list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list, 2382 ep.ep_list) 2383 nuke(loop_ep, -ESHUTDOWN); 2384 spin_unlock_irqrestore(&udc_controller->lock, flags); 2385 2386 /* report disconnect; the controller is already quiesced */ 2387 driver->disconnect(&udc_controller->gadget); 2388 2389 /* unbind gadget and unhook driver. */ 2390 driver->unbind(&udc_controller->gadget); 2391 udc_controller->gadget.dev.driver = NULL; 2392 udc_controller->driver = NULL; 2393 2394 dev_info(udc_controller->dev, "unregistered gadget driver '%s'\r\n", 2395 driver->driver.name); 2396 return 0; 2397} 2398EXPORT_SYMBOL(usb_gadget_unregister_driver); 2399 2400/* udc structure's alloc and setup, include ep-param alloc */ 2401static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev) 2402{ 2403 struct qe_udc *udc; 2404 struct device_node *np = ofdev->dev.of_node; 2405 unsigned int tmp_addr = 0; 2406 struct usb_device_para __iomem *usbpram; 2407 unsigned int i; 2408 u64 size; 2409 u32 offset; 2410 2411 udc = kzalloc(sizeof(*udc), GFP_KERNEL); 2412 if (udc == NULL) { 2413 dev_err(&ofdev->dev, "malloc udc failed\n"); 2414 goto cleanup; 2415 } 2416 2417 udc->dev = &ofdev->dev; 2418 2419 /* get default address of usb parameter in MURAM from device tree */ 2420 offset = *of_get_address(np, 1, &size, NULL); 2421 udc->usb_param = cpm_muram_addr(offset); 2422 memset_io(udc->usb_param, 0, size); 2423 2424 usbpram = udc->usb_param; 2425 out_be16(&usbpram->frame_n, 0); 2426 out_be32(&usbpram->rstate, 0); 2427 2428 tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS * 2429 sizeof(struct usb_ep_para)), 2430 USB_EP_PARA_ALIGNMENT); 2431 if (IS_ERR_VALUE(tmp_addr)) 2432 goto cleanup; 2433 2434 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 2435 out_be16(&usbpram->epptr[i], (u16)tmp_addr); 2436 udc->ep_param[i] = cpm_muram_addr(tmp_addr); 2437 tmp_addr += 32; 2438 } 2439 2440 memset_io(udc->ep_param[0], 0, 2441 USB_MAX_ENDPOINTS * sizeof(struct usb_ep_para)); 2442 2443 udc->resume_state = USB_STATE_NOTATTACHED; 2444 udc->usb_state = USB_STATE_POWERED; 2445 udc->ep0_dir = 0; 2446 2447 spin_lock_init(&udc->lock); 2448 return udc; 2449 2450cleanup: 2451 kfree(udc); 2452 return NULL; 2453} 2454 2455/* USB Controller register init */ 2456static int __devinit qe_udc_reg_init(struct qe_udc *udc) 2457{ 2458 struct usb_ctlr __iomem *qe_usbregs; 2459 qe_usbregs = udc->usb_regs; 2460 2461 /* Spec says that we must enable the USB controller to change mode. */ 2462 out_8(&qe_usbregs->usb_usmod, 0x01); 2463 /* Mode changed, now disable it, since muram isn't initialized yet. */ 2464 out_8(&qe_usbregs->usb_usmod, 0x00); 2465 2466 /* Initialize the rest. */ 2467 out_be16(&qe_usbregs->usb_usbmr, 0); 2468 out_8(&qe_usbregs->usb_uscom, 0); 2469 out_be16(&qe_usbregs->usb_usber, USBER_ALL_CLEAR); 2470 2471 return 0; 2472} 2473 2474static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) 2475{ 2476 struct qe_ep *ep = &udc->eps[pipe_num]; 2477 2478 ep->udc = udc; 2479 strcpy(ep->name, ep_name[pipe_num]); 2480 ep->ep.name = ep_name[pipe_num]; 2481 2482 ep->ep.ops = &qe_ep_ops; 2483 ep->stopped = 1; 2484 ep->ep.maxpacket = (unsigned short) ~0; 2485 ep->desc = NULL; 2486 ep->dir = 0xff; 2487 ep->epnum = (u8)pipe_num; 2488 ep->sent = 0; 2489 ep->last = 0; 2490 ep->init = 0; 2491 ep->rxframe = NULL; 2492 ep->txframe = NULL; 2493 ep->tx_req = NULL; 2494 ep->state = EP_STATE_IDLE; 2495 ep->has_data = 0; 2496 2497 /* the queue lists any req for this ep */ 2498 INIT_LIST_HEAD(&ep->queue); 2499 2500 /* gagdet.ep_list used for ep_autoconfig so no ep0*/ 2501 if (pipe_num != 0) 2502 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); 2503 2504 ep->gadget = &udc->gadget; 2505 2506 return 0; 2507} 2508 2509/*----------------------------------------------------------------------- 2510 * UDC device Driver operation functions * 2511 *----------------------------------------------------------------------*/ 2512static void qe_udc_release(struct device *dev) 2513{ 2514 int i = 0; 2515 2516 complete(udc_controller->done); 2517 cpm_muram_free(cpm_muram_offset(udc_controller->ep_param[0])); 2518 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 2519 udc_controller->ep_param[i] = NULL; 2520 2521 kfree(udc_controller); 2522 udc_controller = NULL; 2523} 2524 2525/* Driver probe functions */ 2526static int __devinit qe_udc_probe(struct platform_device *ofdev, 2527 const struct of_device_id *match) 2528{ 2529 struct device_node *np = ofdev->dev.of_node; 2530 struct qe_ep *ep; 2531 unsigned int ret = 0; 2532 unsigned int i; 2533 const void *prop; 2534 2535 prop = of_get_property(np, "mode", NULL); 2536 if (!prop || strcmp(prop, "peripheral")) 2537 return -ENODEV; 2538 2539 /* Initialize the udc structure including QH member and other member */ 2540 udc_controller = qe_udc_config(ofdev); 2541 if (!udc_controller) { 2542 dev_err(&ofdev->dev, "failed to initialize\n"); 2543 return -ENOMEM; 2544 } 2545 2546 udc_controller->soc_type = (unsigned long)match->data; 2547 udc_controller->usb_regs = of_iomap(np, 0); 2548 if (!udc_controller->usb_regs) { 2549 ret = -ENOMEM; 2550 goto err1; 2551 } 2552 2553 /* initialize usb hw reg except for regs for EP, 2554 * leave usbintr reg untouched*/ 2555 qe_udc_reg_init(udc_controller); 2556 2557 udc_controller->gadget.ops = &qe_gadget_ops; 2558 2559 /* gadget.ep0 is a pointer */ 2560 udc_controller->gadget.ep0 = &udc_controller->eps[0].ep; 2561 2562 INIT_LIST_HEAD(&udc_controller->gadget.ep_list); 2563 2564 /* modify in register gadget process */ 2565 udc_controller->gadget.speed = USB_SPEED_UNKNOWN; 2566 2567 /* name: Identifies the controller hardware type. */ 2568 udc_controller->gadget.name = driver_name; 2569 2570 device_initialize(&udc_controller->gadget.dev); 2571 2572 dev_set_name(&udc_controller->gadget.dev, "gadget"); 2573 2574 udc_controller->gadget.dev.release = qe_udc_release; 2575 udc_controller->gadget.dev.parent = &ofdev->dev; 2576 2577 /* initialize qe_ep struct */ 2578 for (i = 0; i < USB_MAX_ENDPOINTS ; i++) { 2579 /* because the ep type isn't decide here so 2580 * qe_ep_init() should be called in ep_enable() */ 2581 2582 /* setup the qe_ep struct and link ep.ep.list 2583 * into gadget.ep_list */ 2584 qe_ep_config(udc_controller, (unsigned char)i); 2585 } 2586 2587 /* ep0 initialization in here */ 2588 ret = qe_ep_init(udc_controller, 0, &qe_ep0_desc); 2589 if (ret) 2590 goto err2; 2591 2592 /* create a buf for ZLP send, need to remain zeroed */ 2593 udc_controller->nullbuf = kzalloc(256, GFP_KERNEL); 2594 if (udc_controller->nullbuf == NULL) { 2595 dev_err(udc_controller->dev, "cannot alloc nullbuf\n"); 2596 ret = -ENOMEM; 2597 goto err3; 2598 } 2599 2600 /* buffer for data of get_status request */ 2601 udc_controller->statusbuf = kzalloc(2, GFP_KERNEL); 2602 if (udc_controller->statusbuf == NULL) { 2603 ret = -ENOMEM; 2604 goto err4; 2605 } 2606 2607 udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf); 2608 if (udc_controller->nullp == DMA_ADDR_INVALID) { 2609 udc_controller->nullp = dma_map_single( 2610 udc_controller->gadget.dev.parent, 2611 udc_controller->nullbuf, 2612 256, 2613 DMA_TO_DEVICE); 2614 udc_controller->nullmap = 1; 2615 } else { 2616 dma_sync_single_for_device(udc_controller->gadget.dev.parent, 2617 udc_controller->nullp, 256, 2618 DMA_TO_DEVICE); 2619 } 2620 2621 tasklet_init(&udc_controller->rx_tasklet, ep_rx_tasklet, 2622 (unsigned long)udc_controller); 2623 /* request irq and disable DR */ 2624 udc_controller->usb_irq = irq_of_parse_and_map(np, 0); 2625 if (!udc_controller->usb_irq) { 2626 ret = -EINVAL; 2627 goto err_noirq; 2628 } 2629 2630 ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0, 2631 driver_name, udc_controller); 2632 if (ret) { 2633 dev_err(udc_controller->dev, "cannot request irq %d err %d \n", 2634 udc_controller->usb_irq, ret); 2635 goto err5; 2636 } 2637 2638 ret = device_add(&udc_controller->gadget.dev); 2639 if (ret) 2640 goto err6; 2641 2642 dev_info(udc_controller->dev, 2643 "%s USB controller initialized as device\n", 2644 (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM"); 2645 return 0; 2646 2647err6: 2648 free_irq(udc_controller->usb_irq, udc_controller); 2649err5: 2650 irq_dispose_mapping(udc_controller->usb_irq); 2651err_noirq: 2652 if (udc_controller->nullmap) { 2653 dma_unmap_single(udc_controller->gadget.dev.parent, 2654 udc_controller->nullp, 256, 2655 DMA_TO_DEVICE); 2656 udc_controller->nullp = DMA_ADDR_INVALID; 2657 } else { 2658 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, 2659 udc_controller->nullp, 256, 2660 DMA_TO_DEVICE); 2661 } 2662 kfree(udc_controller->statusbuf); 2663err4: 2664 kfree(udc_controller->nullbuf); 2665err3: 2666 ep = &udc_controller->eps[0]; 2667 cpm_muram_free(cpm_muram_offset(ep->rxbase)); 2668 kfree(ep->rxframe); 2669 kfree(ep->rxbuffer); 2670 kfree(ep->txframe); 2671err2: 2672 iounmap(udc_controller->usb_regs); 2673err1: 2674 kfree(udc_controller); 2675 udc_controller = NULL; 2676 return ret; 2677} 2678 2679#ifdef CONFIG_PM 2680static int qe_udc_suspend(struct platform_device *dev, pm_message_t state) 2681{ 2682 return -ENOTSUPP; 2683} 2684 2685static int qe_udc_resume(struct platform_device *dev) 2686{ 2687 return -ENOTSUPP; 2688} 2689#endif 2690 2691static int __devexit qe_udc_remove(struct platform_device *ofdev) 2692{ 2693 struct qe_ep *ep; 2694 unsigned int size; 2695 2696 DECLARE_COMPLETION(done); 2697 2698 if (!udc_controller) 2699 return -ENODEV; 2700 2701 udc_controller->done = &done; 2702 tasklet_disable(&udc_controller->rx_tasklet); 2703 2704 if (udc_controller->nullmap) { 2705 dma_unmap_single(udc_controller->gadget.dev.parent, 2706 udc_controller->nullp, 256, 2707 DMA_TO_DEVICE); 2708 udc_controller->nullp = DMA_ADDR_INVALID; 2709 } else { 2710 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, 2711 udc_controller->nullp, 256, 2712 DMA_TO_DEVICE); 2713 } 2714 kfree(udc_controller->statusbuf); 2715 kfree(udc_controller->nullbuf); 2716 2717 ep = &udc_controller->eps[0]; 2718 cpm_muram_free(cpm_muram_offset(ep->rxbase)); 2719 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1); 2720 2721 kfree(ep->rxframe); 2722 if (ep->rxbufmap) { 2723 dma_unmap_single(udc_controller->gadget.dev.parent, 2724 ep->rxbuf_d, size, 2725 DMA_FROM_DEVICE); 2726 ep->rxbuf_d = DMA_ADDR_INVALID; 2727 } else { 2728 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, 2729 ep->rxbuf_d, size, 2730 DMA_FROM_DEVICE); 2731 } 2732 2733 kfree(ep->rxbuffer); 2734 kfree(ep->txframe); 2735 2736 free_irq(udc_controller->usb_irq, udc_controller); 2737 irq_dispose_mapping(udc_controller->usb_irq); 2738 2739 tasklet_kill(&udc_controller->rx_tasklet); 2740 2741 iounmap(udc_controller->usb_regs); 2742 2743 device_unregister(&udc_controller->gadget.dev); 2744 /* wait for release() of gadget.dev to free udc */ 2745 wait_for_completion(&done); 2746 2747 return 0; 2748} 2749 2750/*-------------------------------------------------------------------------*/ 2751static const struct of_device_id qe_udc_match[] __devinitconst = { 2752 { 2753 .compatible = "fsl,mpc8323-qe-usb", 2754 .data = (void *)PORT_QE, 2755 }, 2756 { 2757 .compatible = "fsl,mpc8360-qe-usb", 2758 .data = (void *)PORT_QE, 2759 }, 2760 { 2761 .compatible = "fsl,mpc8272-cpm-usb", 2762 .data = (void *)PORT_CPM, 2763 }, 2764 {}, 2765}; 2766 2767MODULE_DEVICE_TABLE(of, qe_udc_match); 2768 2769static struct of_platform_driver udc_driver = { 2770 .driver = { 2771 .name = (char *)driver_name, 2772 .owner = THIS_MODULE, 2773 .of_match_table = qe_udc_match, 2774 }, 2775 .probe = qe_udc_probe, 2776 .remove = __devexit_p(qe_udc_remove), 2777#ifdef CONFIG_PM 2778 .suspend = qe_udc_suspend, 2779 .resume = qe_udc_resume, 2780#endif 2781}; 2782 2783static int __init qe_udc_init(void) 2784{ 2785 printk(KERN_INFO "%s: %s, %s\n", driver_name, driver_desc, 2786 DRIVER_VERSION); 2787 return of_register_platform_driver(&udc_driver); 2788} 2789 2790static void __exit qe_udc_exit(void) 2791{ 2792 of_unregister_platform_driver(&udc_driver); 2793} 2794 2795module_init(qe_udc_init); 2796module_exit(qe_udc_exit); 2797 2798MODULE_DESCRIPTION(DRIVER_DESC); 2799MODULE_AUTHOR(DRIVER_AUTHOR); 2800MODULE_LICENSE("GPL"); 2801