Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas...
[linux-2.6.git] / drivers / usb / gadget / fsl_qe_udc.c
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
53 static const char driver_name[] = "fsl_qe_udc";
54 static const char driver_desc[] = DRIVER_DESC;
55
56 /*ep name is important in gadget, it should obey the convention of ep_match()*/
57 static const char *const ep_name[] = {
58         "ep0-control", /* everyone has ep0 */
59         /* 3 configurable endpoints */
60         "ep1",
61         "ep2",
62         "ep3",
63 };
64
65 static 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()  */
75 static struct qe_udc *udc_controller;
76
77 /********************************************************************
78  *      Internal Used Function Start
79 ********************************************************************/
80 /*-----------------------------------------------------------------
81  * done() - retire a request; caller blocked irqs
82  *--------------------------------------------------------------*/
83 static 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  *--------------------------------------------------------------*/
137 static 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 */
152 static 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
169 static 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
187 static 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
196 static 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
215 static 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
236 static 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
248 static 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
260 static 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
280 static 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
289 static 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
321 static 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
351 static int qe_ep_toggledata01(struct qe_ep *ep)
352 {
353         ep->data01 ^= 0x1;
354         return 0;
355 }
356
357 static 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
416 static 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
481 static 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
534 static 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;
691 en_done2:
692         kfree(ep->rxbuffer);
693         kfree(ep->rxframe);
694 en_done1:
695         spin_unlock_irqrestore(&udc->lock, flags);
696 en_done:
697         dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name);
698         return -ENODEV;
699 }
700
701 static inline void qe_usb_enable(void)
702 {
703         setbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN);
704 }
705
706 static 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  ******************************************************************************/
719 static 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
733 static 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
760 static 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
795 static void setup_received_handle(struct qe_udc *udc,
796                                         struct usb_ctrlrequest *setup);
797 static int qe_ep_rxframe_handle(struct qe_ep *ep);
798 static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req);
799 /* when BD PID is setup, handle the packet */
800 static 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
824 static 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
897 static 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
942 static 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
1030 static 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 */
1076 static 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           */
1148 static int txcomplete(struct qe_ep *ep, unsigned char restart)
1149 {
1150         if (ep->tx_req != NULL) {
1151                 struct qe_req *req = ep->tx_req;
1152                 unsigned zlp = 0, last_len = 0;
1153
1154                 last_len = min_t(unsigned, req->req.length - ep->sent,
1155                                 ep->ep.maxpacket);
1156
1157                 if (!restart) {
1158                         int asent = ep->last;
1159                         ep->sent += asent;
1160                         ep->last -= asent;
1161                 } else {
1162                         ep->last = 0;
1163                 }
1164
1165                 /* zlp needed when req->re.zero is set */
1166                 if (req->req.zero) {
1167                         if (last_len == 0 ||
1168                                 (req->req.length % ep->ep.maxpacket) != 0)
1169                                 zlp = 0;
1170                         else
1171                                 zlp = 1;
1172                 } else
1173                         zlp = 0;
1174
1175                 /* a request already were transmitted completely */
1176                 if (((ep->tx_req->req.length - ep->sent) <= 0) && !zlp) {
1177                         done(ep, ep->tx_req, 0);
1178                         ep->tx_req = NULL;
1179                         ep->last = 0;
1180                         ep->sent = 0;
1181                 }
1182         }
1183
1184         /* we should gain a new tx_req fot this endpoint */
1185         if (ep->tx_req == NULL) {
1186                 if (!list_empty(&ep->queue)) {
1187                         ep->tx_req = list_entry(ep->queue.next, struct qe_req,
1188                                                         queue);
1189                         ep->last = 0;
1190                         ep->sent = 0;
1191                 }
1192         }
1193
1194         return 0;
1195 }
1196
1197 /* give a frame and a tx_req, send some data */
1198 static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame)
1199 {
1200         unsigned int size;
1201         u8 *buf;
1202
1203         qe_frame_clean(frame);
1204         size = min_t(u32, (ep->tx_req->req.length - ep->sent),
1205                                 ep->ep.maxpacket);
1206         buf = (u8 *)ep->tx_req->req.buf + ep->sent;
1207         if (buf && size) {
1208                 ep->last = size;
1209                 ep->tx_req->req.actual += size;
1210                 frame_set_data(frame, buf);
1211                 frame_set_length(frame, size);
1212                 frame_set_status(frame, FRAME_OK);
1213                 frame_set_info(frame, 0);
1214                 return qe_ep_tx(ep, frame);
1215         }
1216         return -EIO;
1217 }
1218
1219 /* give a frame struct,send a ZLP */
1220 static int sendnulldata(struct qe_ep *ep, struct qe_frame *frame, uint infor)
1221 {
1222         struct qe_udc *udc = ep->udc;
1223
1224         if (frame == NULL)
1225                 return -ENODEV;
1226
1227         qe_frame_clean(frame);
1228         frame_set_data(frame, (u8 *)udc->nullbuf);
1229         frame_set_length(frame, 2);
1230         frame_set_status(frame, FRAME_OK);
1231         frame_set_info(frame, (ZLP | NO_CRC | infor));
1232
1233         return qe_ep_tx(ep, frame);
1234 }
1235
1236 static int frame_create_tx(struct qe_ep *ep, struct qe_frame *frame)
1237 {
1238         struct qe_req *req = ep->tx_req;
1239         int reval;
1240
1241         if (req == NULL)
1242                 return -ENODEV;
1243
1244         if ((req->req.length - ep->sent) > 0)
1245                 reval = qe_usb_senddata(ep, frame);
1246         else
1247                 reval = sendnulldata(ep, frame, 0);
1248
1249         return reval;
1250 }
1251
1252 /* if direction is DIR_IN, the status is Device->Host
1253  * if direction is DIR_OUT, the status transaction is Device<-Host
1254  * in status phase, udc create a request and gain status */
1255 static int ep0_prime_status(struct qe_udc *udc, int direction)
1256 {
1257
1258         struct qe_ep *ep = &udc->eps[0];
1259
1260         if (direction == USB_DIR_IN) {
1261                 udc->ep0_state = DATA_STATE_NEED_ZLP;
1262                 udc->ep0_dir = USB_DIR_IN;
1263                 sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
1264         } else {
1265                 udc->ep0_dir = USB_DIR_OUT;
1266                 udc->ep0_state = WAIT_FOR_OUT_STATUS;
1267         }
1268
1269         return 0;
1270 }
1271
1272 /* a request complete in ep0, whether gadget request or udc request */
1273 static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req)
1274 {
1275         struct qe_ep *ep = &udc->eps[0];
1276         /* because usb and ep's status already been set in ch9setaddress() */
1277
1278         switch (udc->ep0_state) {
1279         case DATA_STATE_XMIT:
1280                 done(ep, req, 0);
1281                 /* receive status phase */
1282                 if (ep0_prime_status(udc, USB_DIR_OUT))
1283                         qe_ep0_stall(udc);
1284                 break;
1285
1286         case DATA_STATE_NEED_ZLP:
1287                 done(ep, req, 0);
1288                 udc->ep0_state = WAIT_FOR_SETUP;
1289                 break;
1290
1291         case DATA_STATE_RECV:
1292                 done(ep, req, 0);
1293                 /* send status phase */
1294                 if (ep0_prime_status(udc, USB_DIR_IN))
1295                         qe_ep0_stall(udc);
1296                 break;
1297
1298         case WAIT_FOR_OUT_STATUS:
1299                 done(ep, req, 0);
1300                 udc->ep0_state = WAIT_FOR_SETUP;
1301                 break;
1302
1303         case WAIT_FOR_SETUP:
1304                 dev_vdbg(udc->dev, "Unexpected interrupt\n");
1305                 break;
1306
1307         default:
1308                 qe_ep0_stall(udc);
1309                 break;
1310         }
1311 }
1312
1313 static int ep0_txcomplete(struct qe_ep *ep, unsigned char restart)
1314 {
1315         struct qe_req *tx_req = NULL;
1316         struct qe_frame *frame = ep->txframe;
1317
1318         if ((frame_get_info(frame) & (ZLP | NO_REQ)) == (ZLP | NO_REQ)) {
1319                 if (!restart)
1320                         ep->udc->ep0_state = WAIT_FOR_SETUP;
1321                 else
1322                         sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
1323                 return 0;
1324         }
1325
1326         tx_req = ep->tx_req;
1327         if (tx_req != NULL) {
1328                 if (!restart) {
1329                         int asent = ep->last;
1330                         ep->sent += asent;
1331                         ep->last -= asent;
1332                 } else {
1333                         ep->last = 0;
1334                 }
1335
1336                 /* a request already were transmitted completely */
1337                 if ((ep->tx_req->req.length - ep->sent) <= 0) {
1338                         ep->tx_req->req.actual = (unsigned int)ep->sent;
1339                         ep0_req_complete(ep->udc, ep->tx_req);
1340                         ep->tx_req = NULL;
1341                         ep->last = 0;
1342                         ep->sent = 0;
1343                 }
1344         } else {
1345                 dev_vdbg(ep->udc->dev, "the ep0_controller have no req\n");
1346         }
1347
1348         return 0;
1349 }
1350
1351 static int ep0_txframe_handle(struct qe_ep *ep)
1352 {
1353         /* if have error, transmit again */
1354         if (frame_get_status(ep->txframe) & FRAME_ERROR) {
1355                 qe_ep_flushtxfifo(ep);
1356                 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
1357                 if (frame_get_info(ep->txframe) & PID_DATA0)
1358                         ep->data01 = 0;
1359                 else
1360                         ep->data01 = 1;
1361
1362                 ep0_txcomplete(ep, 1);
1363         } else
1364                 ep0_txcomplete(ep, 0);
1365
1366         frame_create_tx(ep, ep->txframe);
1367         return 0;
1368 }
1369
1370 static int qe_ep0_txconf(struct qe_ep *ep)
1371 {
1372         struct qe_bd __iomem *bd;
1373         struct qe_frame *pframe;
1374         u32 bdstatus;
1375
1376         bd = ep->c_txbd;
1377         bdstatus = in_be32((u32 __iomem *)bd);
1378         while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
1379                 pframe = ep->txframe;
1380
1381                 /* clear and recycle the BD */
1382                 out_be32((u32 __iomem *)bd, bdstatus & T_W);
1383                 out_be32(&bd->buf, 0);
1384                 if (bdstatus & T_W)
1385                         ep->c_txbd = ep->txbase;
1386                 else
1387                         ep->c_txbd++;
1388
1389                 if (ep->c_txbd == ep->n_txbd) {
1390                         if (bdstatus & DEVICE_T_ERROR) {
1391                                 frame_set_status(pframe, FRAME_ERROR);
1392                                 if (bdstatus & T_TO)
1393                                         pframe->status |= TX_ER_TIMEOUT;
1394                                 if (bdstatus & T_UN)
1395                                         pframe->status |= TX_ER_UNDERUN;
1396                         }
1397                         ep0_txframe_handle(ep);
1398                 }
1399
1400                 bd = ep->c_txbd;
1401                 bdstatus = in_be32((u32 __iomem *)bd);
1402         }
1403
1404         return 0;
1405 }
1406
1407 static int ep_txframe_handle(struct qe_ep *ep)
1408 {
1409         if (frame_get_status(ep->txframe) & FRAME_ERROR) {
1410                 qe_ep_flushtxfifo(ep);
1411                 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
1412                 if (frame_get_info(ep->txframe) & PID_DATA0)
1413                         ep->data01 = 0;
1414                 else
1415                         ep->data01 = 1;
1416
1417                 txcomplete(ep, 1);
1418         } else
1419                 txcomplete(ep, 0);
1420
1421         frame_create_tx(ep, ep->txframe); /* send the data */
1422         return 0;
1423 }
1424
1425 /* confirm the already trainsmited bd */
1426 static int qe_ep_txconf(struct qe_ep *ep)
1427 {
1428         struct qe_bd __iomem *bd;
1429         struct qe_frame *pframe = NULL;
1430         u32 bdstatus;
1431         unsigned char breakonrxinterrupt = 0;
1432
1433         bd = ep->c_txbd;
1434         bdstatus = in_be32((u32 __iomem *)bd);
1435         while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
1436                 pframe = ep->txframe;
1437                 if (bdstatus & DEVICE_T_ERROR) {
1438                         frame_set_status(pframe, FRAME_ERROR);
1439                         if (bdstatus & T_TO)
1440                                 pframe->status |= TX_ER_TIMEOUT;
1441                         if (bdstatus & T_UN)
1442                                 pframe->status |= TX_ER_UNDERUN;
1443                 }
1444
1445                 /* clear and recycle the BD */
1446                 out_be32((u32 __iomem *)bd, bdstatus & T_W);
1447                 out_be32(&bd->buf, 0);
1448                 if (bdstatus & T_W)
1449                         ep->c_txbd = ep->txbase;
1450                 else
1451                         ep->c_txbd++;
1452
1453                 /* handle the tx frame */
1454                 ep_txframe_handle(ep);
1455                 bd = ep->c_txbd;
1456                 bdstatus = in_be32((u32 __iomem *)bd);
1457         }
1458         if (breakonrxinterrupt)
1459                 return -EIO;
1460         else
1461                 return 0;
1462 }
1463
1464 /* Add a request in queue, and try to transmit a packet */
1465 static int ep_req_send(struct qe_ep *ep, struct qe_req *req)
1466 {
1467         int reval = 0;
1468
1469         if (ep->tx_req == NULL) {
1470                 ep->sent = 0;
1471                 ep->last = 0;
1472                 txcomplete(ep, 0); /* can gain a new tx_req */
1473                 reval = frame_create_tx(ep, ep->txframe);
1474         }
1475         return reval;
1476 }
1477
1478 /* Maybe this is a good ideal */
1479 static int ep_req_rx(struct qe_ep *ep, struct qe_req *req)
1480 {
1481         struct qe_udc *udc = ep->udc;
1482         struct qe_frame *pframe = NULL;
1483         struct qe_bd __iomem *bd;
1484         u32 bdstatus, length;
1485         u32 vaddr, fsize;
1486         u8 *cp;
1487         u8 finish_req = 0;
1488         u8 framepid;
1489
1490         if (list_empty(&ep->queue)) {
1491                 dev_vdbg(udc->dev, "the req already finish!\n");
1492                 return 0;
1493         }
1494         pframe = ep->rxframe;
1495
1496         bd = ep->n_rxbd;
1497         bdstatus = in_be32((u32 __iomem *)bd);
1498         length = bdstatus & BD_LENGTH_MASK;
1499
1500         while (!(bdstatus & R_E) && length) {
1501                 if (finish_req)
1502                         break;
1503                 if ((bdstatus & R_F) && (bdstatus & R_L)
1504                                         && !(bdstatus & R_ERROR)) {
1505                         qe_frame_clean(pframe);
1506                         vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
1507                         frame_set_data(pframe, (u8 *)vaddr);
1508                         frame_set_length(pframe, (length - USB_CRC_SIZE));
1509                         frame_set_status(pframe, FRAME_OK);
1510                         switch (bdstatus & R_PID) {
1511                         case R_PID_DATA1:
1512                                 frame_set_info(pframe, PID_DATA1); break;
1513                         default:
1514                                 frame_set_info(pframe, PID_DATA0); break;
1515                         }
1516                         /* handle the rx frame */
1517
1518                         if (frame_get_info(pframe) & PID_DATA1)
1519                                 framepid = 0x1;
1520                         else
1521                                 framepid = 0;
1522
1523                         if (framepid != ep->data01) {
1524                                 dev_vdbg(udc->dev, "the data01 error!\n");
1525                         } else {
1526                                 fsize = frame_get_length(pframe);
1527
1528                                 cp = (u8 *)(req->req.buf) + req->req.actual;
1529                                 if (cp) {
1530                                         memcpy(cp, pframe->data, fsize);
1531                                         req->req.actual += fsize;
1532                                         if ((fsize < ep->ep.maxpacket)
1533                                                 || (req->req.actual >=
1534                                                         req->req.length)) {
1535                                                 finish_req = 1;
1536                                                 done(ep, req, 0);
1537                                                 if (list_empty(&ep->queue))
1538                                                         qe_eprx_nack(ep);
1539                                         }
1540                                 }
1541                                 qe_ep_toggledata01(ep);
1542                         }
1543                 } else {
1544                         dev_err(udc->dev, "The receive frame with error!\n");
1545                 }
1546
1547                 /* note: don't clear the rxbd's buffer address *
1548                  * only Clear the length */
1549                 out_be32((u32 __iomem *)bd, (bdstatus & BD_STATUS_MASK));
1550                 ep->has_data--;
1551
1552                 /* Get next BD */
1553                 if (bdstatus & R_W)
1554                         bd = ep->rxbase;
1555                 else
1556                         bd++;
1557
1558                 bdstatus = in_be32((u32 __iomem *)bd);
1559                 length = bdstatus & BD_LENGTH_MASK;
1560         }
1561
1562         ep->n_rxbd = bd;
1563         ep_recycle_rxbds(ep);
1564
1565         return 0;
1566 }
1567
1568 /* only add the request in queue */
1569 static int ep_req_receive(struct qe_ep *ep, struct qe_req *req)
1570 {
1571         if (ep->state == EP_STATE_NACK) {
1572                 if (ep->has_data <= 0) {
1573                         /* Enable rx and unmask rx interrupt */
1574                         qe_eprx_normal(ep);
1575                 } else {
1576                         /* Copy the exist BD data */
1577                         ep_req_rx(ep, req);
1578                 }
1579         }
1580
1581         return 0;
1582 }
1583
1584 /********************************************************************
1585         Internal Used Function End
1586 ********************************************************************/
1587
1588 /*-----------------------------------------------------------------------
1589         Endpoint Management Functions For Gadget
1590  -----------------------------------------------------------------------*/
1591 static int qe_ep_enable(struct usb_ep *_ep,
1592                          const struct usb_endpoint_descriptor *desc)
1593 {
1594         struct qe_udc *udc;
1595         struct qe_ep *ep;
1596         int retval = 0;
1597         unsigned char epnum;
1598
1599         ep = container_of(_ep, struct qe_ep, ep);
1600
1601         /* catch various bogus parameters */
1602         if (!_ep || !desc || ep->desc || _ep->name == ep_name[0] ||
1603                         (desc->bDescriptorType != USB_DT_ENDPOINT))
1604                 return -EINVAL;
1605
1606         udc = ep->udc;
1607         if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
1608                 return -ESHUTDOWN;
1609
1610         epnum = (u8)desc->bEndpointAddress & 0xF;
1611
1612         retval = qe_ep_init(udc, epnum, desc);
1613         if (retval != 0) {
1614                 cpm_muram_free(cpm_muram_offset(ep->rxbase));
1615                 dev_dbg(udc->dev, "enable ep%d failed\n", ep->epnum);
1616                 return -EINVAL;
1617         }
1618         dev_dbg(udc->dev, "enable ep%d successful\n", ep->epnum);
1619         return 0;
1620 }
1621
1622 static int qe_ep_disable(struct usb_ep *_ep)
1623 {
1624         struct qe_udc *udc;
1625         struct qe_ep *ep;
1626         unsigned long flags;
1627         unsigned int size;
1628
1629         ep = container_of(_ep, struct qe_ep, ep);
1630         udc = ep->udc;
1631
1632         if (!_ep || !ep->desc) {
1633                 dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL);
1634                 return -EINVAL;
1635         }
1636
1637         spin_lock_irqsave(&udc->lock, flags);
1638         /* Nuke all pending requests (does flush) */
1639         nuke(ep, -ESHUTDOWN);
1640         ep->desc = NULL;
1641         ep->stopped = 1;
1642         ep->tx_req = NULL;
1643         qe_ep_reset(udc, ep->epnum);
1644         spin_unlock_irqrestore(&udc->lock, flags);
1645
1646         cpm_muram_free(cpm_muram_offset(ep->rxbase));
1647
1648         if (ep->dir == USB_DIR_OUT)
1649                 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
1650                                 (USB_BDRING_LEN_RX + 1);
1651         else
1652                 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
1653                                 (USB_BDRING_LEN + 1);
1654
1655         if (ep->dir != USB_DIR_IN) {
1656                 kfree(ep->rxframe);
1657                 if (ep->rxbufmap) {
1658                         dma_unmap_single(udc_controller->gadget.dev.parent,
1659                                         ep->rxbuf_d, size,
1660                                         DMA_FROM_DEVICE);
1661                         ep->rxbuf_d = DMA_ADDR_INVALID;
1662                 } else {
1663                         dma_sync_single_for_cpu(
1664                                         udc_controller->gadget.dev.parent,
1665                                         ep->rxbuf_d, size,
1666                                         DMA_FROM_DEVICE);
1667                 }
1668                 kfree(ep->rxbuffer);
1669         }
1670
1671         if (ep->dir != USB_DIR_OUT)
1672                 kfree(ep->txframe);
1673
1674         dev_dbg(udc->dev, "disabled %s OK\n", _ep->name);
1675         return 0;
1676 }
1677
1678 static struct usb_request *qe_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
1679 {
1680         struct qe_req *req;
1681
1682         req = kzalloc(sizeof(*req), gfp_flags);
1683         if (!req)
1684                 return NULL;
1685
1686         req->req.dma = DMA_ADDR_INVALID;
1687
1688         INIT_LIST_HEAD(&req->queue);
1689
1690         return &req->req;
1691 }
1692
1693 static void qe_free_request(struct usb_ep *_ep, struct usb_request *_req)
1694 {
1695         struct qe_req *req;
1696
1697         req = container_of(_req, struct qe_req, req);
1698
1699         if (_req)
1700                 kfree(req);
1701 }
1702
1703 static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req)
1704 {
1705         struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1706         struct qe_req *req = container_of(_req, struct qe_req, req);
1707         struct qe_udc *udc;
1708         int reval;
1709
1710         udc = ep->udc;
1711         /* catch various bogus parameters */
1712         if (!_req || !req->req.complete || !req->req.buf
1713                         || !list_empty(&req->queue)) {
1714                 dev_dbg(udc->dev, "bad params\n");
1715                 return -EINVAL;
1716         }
1717         if (!_ep || (!ep->desc && ep_index(ep))) {
1718                 dev_dbg(udc->dev, "bad ep\n");
1719                 return -EINVAL;
1720         }
1721
1722         if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
1723                 return -ESHUTDOWN;
1724
1725         req->ep = ep;
1726
1727         /* map virtual address to hardware */
1728         if (req->req.dma == DMA_ADDR_INVALID) {
1729                 req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
1730                                         req->req.buf,
1731                                         req->req.length,
1732                                         ep_is_in(ep)
1733                                         ? DMA_TO_DEVICE :
1734                                         DMA_FROM_DEVICE);
1735                 req->mapped = 1;
1736         } else {
1737                 dma_sync_single_for_device(ep->udc->gadget.dev.parent,
1738                                         req->req.dma, req->req.length,
1739                                         ep_is_in(ep)
1740                                         ? DMA_TO_DEVICE :
1741                                         DMA_FROM_DEVICE);
1742                 req->mapped = 0;
1743         }
1744
1745         req->req.status = -EINPROGRESS;
1746         req->req.actual = 0;
1747
1748         list_add_tail(&req->queue, &ep->queue);
1749         dev_vdbg(udc->dev, "gadget have request in %s! %d\n",
1750                         ep->name, req->req.length);
1751
1752         /* push the request to device */
1753         if (ep_is_in(ep))
1754                 reval = ep_req_send(ep, req);
1755
1756         /* EP0 */
1757         if (ep_index(ep) == 0 && req->req.length > 0) {
1758                 if (ep_is_in(ep))
1759                         udc->ep0_state = DATA_STATE_XMIT;
1760                 else
1761                         udc->ep0_state = DATA_STATE_RECV;
1762         }
1763
1764         if (ep->dir == USB_DIR_OUT)
1765                 reval = ep_req_receive(ep, req);
1766
1767         return 0;
1768 }
1769
1770 /* queues (submits) an I/O request to an endpoint */
1771 static int qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
1772                        gfp_t gfp_flags)
1773 {
1774         struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1775         struct qe_udc *udc = ep->udc;
1776         unsigned long flags;
1777         int ret;
1778
1779         spin_lock_irqsave(&udc->lock, flags);
1780         ret = __qe_ep_queue(_ep, _req);
1781         spin_unlock_irqrestore(&udc->lock, flags);
1782         return ret;
1783 }
1784
1785 /* dequeues (cancels, unlinks) an I/O request from an endpoint */
1786 static int qe_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1787 {
1788         struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1789         struct qe_req *req;
1790         unsigned long flags;
1791
1792         if (!_ep || !_req)
1793                 return -EINVAL;
1794
1795         spin_lock_irqsave(&ep->udc->lock, flags);
1796
1797         /* make sure it's actually queued on this endpoint */
1798         list_for_each_entry(req, &ep->queue, queue) {
1799                 if (&req->req == _req)
1800                         break;
1801         }
1802
1803         if (&req->req != _req) {
1804                 spin_unlock_irqrestore(&ep->udc->lock, flags);
1805                 return -EINVAL;
1806         }
1807
1808         done(ep, req, -ECONNRESET);
1809
1810         spin_unlock_irqrestore(&ep->udc->lock, flags);
1811         return 0;
1812 }
1813
1814 /*-----------------------------------------------------------------
1815  * modify the endpoint halt feature
1816  * @ep: the non-isochronous endpoint being stalled
1817  * @value: 1--set halt  0--clear halt
1818  * Returns zero, or a negative error code.
1819 *----------------------------------------------------------------*/
1820 static int qe_ep_set_halt(struct usb_ep *_ep, int value)
1821 {
1822         struct qe_ep *ep;
1823         unsigned long flags;
1824         int status = -EOPNOTSUPP;
1825         struct qe_udc *udc;
1826
1827         ep = container_of(_ep, struct qe_ep, ep);
1828         if (!_ep || !ep->desc) {
1829                 status = -EINVAL;
1830                 goto out;
1831         }
1832
1833         udc = ep->udc;
1834         /* Attempt to halt IN ep will fail if any transfer requests
1835          * are still queue */
1836         if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
1837                 status = -EAGAIN;
1838                 goto out;
1839         }
1840
1841         status = 0;
1842         spin_lock_irqsave(&ep->udc->lock, flags);
1843         qe_eptx_stall_change(ep, value);
1844         qe_eprx_stall_change(ep, value);
1845         spin_unlock_irqrestore(&ep->udc->lock, flags);
1846
1847         if (ep->epnum == 0) {
1848                 udc->ep0_state = WAIT_FOR_SETUP;
1849                 udc->ep0_dir = 0;
1850         }
1851
1852         /* set data toggle to DATA0 on clear halt */
1853         if (value == 0)
1854                 ep->data01 = 0;
1855 out:
1856         dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name,
1857                         value ?  "set" : "clear", status);
1858
1859         return status;
1860 }
1861
1862 static struct usb_ep_ops qe_ep_ops = {
1863         .enable = qe_ep_enable,
1864         .disable = qe_ep_disable,
1865
1866         .alloc_request = qe_alloc_request,
1867         .free_request = qe_free_request,
1868
1869         .queue = qe_ep_queue,
1870         .dequeue = qe_ep_dequeue,
1871
1872         .set_halt = qe_ep_set_halt,
1873 };
1874
1875 /*------------------------------------------------------------------------
1876         Gadget Driver Layer Operations
1877  ------------------------------------------------------------------------*/
1878
1879 /* Get the current frame number */
1880 static int qe_get_frame(struct usb_gadget *gadget)
1881 {
1882         u16 tmp;
1883
1884         tmp = in_be16(&udc_controller->usb_param->frame_n);
1885         if (tmp & 0x8000)
1886                 tmp = tmp & 0x07ff;
1887         else
1888                 tmp = -EINVAL;
1889
1890         return (int)tmp;
1891 }
1892
1893 /* Tries to wake up the host connected to this gadget
1894  *
1895  * Return : 0-success
1896  * Negative-this feature not enabled by host or not supported by device hw
1897  */
1898 static int qe_wakeup(struct usb_gadget *gadget)
1899 {
1900         return -ENOTSUPP;
1901 }
1902
1903 /* Notify controller that VBUS is powered, Called by whatever
1904    detects VBUS sessions */
1905 static int qe_vbus_session(struct usb_gadget *gadget, int is_active)
1906 {
1907         return -ENOTSUPP;
1908 }
1909
1910 /* constrain controller's VBUS power usage
1911  * This call is used by gadget drivers during SET_CONFIGURATION calls,
1912  * reporting how much power the device may consume.  For example, this
1913  * could affect how quickly batteries are recharged.
1914  *
1915  * Returns zero on success, else negative errno.
1916  */
1917 static int qe_vbus_draw(struct usb_gadget *gadget, unsigned mA)
1918 {
1919         return -ENOTSUPP;
1920 }
1921
1922 /* Change Data+ pullup status
1923  * this func is used by usb_gadget_connect/disconnect
1924  */
1925 static int qe_pullup(struct usb_gadget *gadget, int is_on)
1926 {
1927         return -ENOTSUPP;
1928 }
1929
1930 /* defined in usb_gadget.h */
1931 static struct usb_gadget_ops qe_gadget_ops = {
1932         .get_frame = qe_get_frame,
1933         .wakeup = qe_wakeup,
1934 /*      .set_selfpowered = qe_set_selfpowered,*/ /* always selfpowered */
1935         .vbus_session = qe_vbus_session,
1936         .vbus_draw = qe_vbus_draw,
1937         .pullup = qe_pullup,
1938 };
1939
1940 /*-------------------------------------------------------------------------
1941         USB ep0 Setup process in BUS Enumeration
1942  -------------------------------------------------------------------------*/
1943 static int udc_reset_ep_queue(struct qe_udc *udc, u8 pipe)
1944 {
1945         struct qe_ep *ep = &udc->eps[pipe];
1946
1947         nuke(ep, -ECONNRESET);
1948         ep->tx_req = NULL;
1949         return 0;
1950 }
1951
1952 static int reset_queues(struct qe_udc *udc)
1953 {
1954         u8 pipe;
1955
1956         for (pipe = 0; pipe < USB_MAX_ENDPOINTS; pipe++)
1957                 udc_reset_ep_queue(udc, pipe);
1958
1959         /* report disconnect; the driver is already quiesced */
1960         spin_unlock(&udc->lock);
1961         udc->driver->disconnect(&udc->gadget);
1962         spin_lock(&udc->lock);
1963
1964         return 0;
1965 }
1966
1967 static void ch9setaddress(struct qe_udc *udc, u16 value, u16 index,
1968                         u16 length)
1969 {
1970         /* Save the new address to device struct */
1971         udc->device_address = (u8) value;
1972         /* Update usb state */
1973         udc->usb_state = USB_STATE_ADDRESS;
1974
1975         /* Status phase , send a ZLP */
1976         if (ep0_prime_status(udc, USB_DIR_IN))
1977                 qe_ep0_stall(udc);
1978 }
1979
1980 static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req)
1981 {
1982         struct qe_req *req = container_of(_req, struct qe_req, req);
1983
1984         req->req.buf = NULL;
1985         kfree(req);
1986 }
1987
1988 static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value,
1989                         u16 index, u16 length)
1990 {
1991         u16 usb_status = 0;
1992         struct qe_req *req;
1993         struct qe_ep *ep;
1994         int status = 0;
1995
1996         ep = &udc->eps[0];
1997         if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
1998                 /* Get device status */
1999                 usb_status = 1 << USB_DEVICE_SELF_POWERED;
2000         } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
2001                 /* Get interface status */
2002                 /* We don't have interface information in udc driver */
2003                 usb_status = 0;
2004         } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
2005                 /* Get endpoint status */
2006                 int pipe = index & USB_ENDPOINT_NUMBER_MASK;
2007                 struct qe_ep *target_ep = &udc->eps[pipe];
2008                 u16 usep;
2009
2010                 /* stall if endpoint doesn't exist */
2011                 if (!target_ep->desc)
2012                         goto stall;
2013
2014                 usep = in_be16(&udc->usb_regs->usb_usep[pipe]);
2015                 if (index & USB_DIR_IN) {
2016                         if (target_ep->dir != USB_DIR_IN)
2017                                 goto stall;
2018                         if ((usep & USB_THS_MASK) == USB_THS_STALL)
2019                                 usb_status = 1 << USB_ENDPOINT_HALT;
2020                 } else {
2021                         if (target_ep->dir != USB_DIR_OUT)
2022                                 goto stall;
2023                         if ((usep & USB_RHS_MASK) == USB_RHS_STALL)
2024                                 usb_status = 1 << USB_ENDPOINT_HALT;
2025                 }
2026         }
2027
2028         req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL),
2029                                         struct qe_req, req);
2030         req->req.length = 2;
2031         req->req.buf = udc->statusbuf;
2032         *(u16 *)req->req.buf = cpu_to_le16(usb_status);
2033         req->req.status = -EINPROGRESS;
2034         req->req.actual = 0;
2035         req->req.complete = ownercomplete;
2036
2037         udc->ep0_dir = USB_DIR_IN;
2038
2039         /* data phase */
2040         status = __qe_ep_queue(&ep->ep, &req->req);
2041
2042         if (status == 0)
2043                 return;
2044 stall:
2045         dev_err(udc->dev, "Can't respond to getstatus request \n");
2046         qe_ep0_stall(udc);
2047 }
2048
2049 /* only handle the setup request, suppose the device in normal status */
2050 static void setup_received_handle(struct qe_udc *udc,
2051                                 struct usb_ctrlrequest *setup)
2052 {
2053         /* Fix Endian (udc->local_setup_buff is cpu Endian now)*/
2054         u16 wValue = le16_to_cpu(setup->wValue);
2055         u16 wIndex = le16_to_cpu(setup->wIndex);
2056         u16 wLength = le16_to_cpu(setup->wLength);
2057
2058         /* clear the previous request in the ep0 */
2059         udc_reset_ep_queue(udc, 0);
2060
2061         if (setup->bRequestType & USB_DIR_IN)
2062                 udc->ep0_dir = USB_DIR_IN;
2063         else
2064                 udc->ep0_dir = USB_DIR_OUT;
2065
2066         switch (setup->bRequest) {
2067         case USB_REQ_GET_STATUS:
2068                 /* Data+Status phase form udc */
2069                 if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
2070                                         != (USB_DIR_IN | USB_TYPE_STANDARD))
2071                         break;
2072                 ch9getstatus(udc, setup->bRequestType, wValue, wIndex,
2073                                         wLength);
2074                 return;
2075
2076         case USB_REQ_SET_ADDRESS:
2077                 /* Status phase from udc */
2078                 if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
2079                                                 USB_RECIP_DEVICE))
2080                         break;
2081                 ch9setaddress(udc, wValue, wIndex, wLength);
2082                 return;
2083
2084         case USB_REQ_CLEAR_FEATURE:
2085         case USB_REQ_SET_FEATURE:
2086                 /* Requests with no data phase, status phase from udc */
2087                 if ((setup->bRequestType & USB_TYPE_MASK)
2088                                         != USB_TYPE_STANDARD)
2089                         break;
2090
2091                 if ((setup->bRequestType & USB_RECIP_MASK)
2092                                 == USB_RECIP_ENDPOINT) {
2093                         int pipe = wIndex & USB_ENDPOINT_NUMBER_MASK;
2094                         struct qe_ep *ep;
2095
2096                         if (wValue != 0 || wLength != 0
2097                                 || pipe > USB_MAX_ENDPOINTS)
2098                                 break;
2099                         ep = &udc->eps[pipe];
2100
2101                         spin_unlock(&udc->lock);
2102                         qe_ep_set_halt(&ep->ep,
2103                                         (setup->bRequest == USB_REQ_SET_FEATURE)
2104                                                 ? 1 : 0);
2105                         spin_lock(&udc->lock);
2106                 }
2107
2108                 ep0_prime_status(udc, USB_DIR_IN);
2109
2110                 return;
2111
2112         default:
2113                 break;
2114         }
2115
2116         if (wLength) {
2117                 /* Data phase from gadget, status phase from udc */
2118                 if (setup->bRequestType & USB_DIR_IN) {
2119                         udc->ep0_state = DATA_STATE_XMIT;
2120                         udc->ep0_dir = USB_DIR_IN;
2121                 } else {
2122                         udc->ep0_state = DATA_STATE_RECV;
2123                         udc->ep0_dir = USB_DIR_OUT;
2124                 }
2125                 spin_unlock(&udc->lock);
2126                 if (udc->driver->setup(&udc->gadget,
2127                                         &udc->local_setup_buff) < 0)
2128                         qe_ep0_stall(udc);
2129                 spin_lock(&udc->lock);
2130         } else {
2131                 /* No data phase, IN status from gadget */
2132                 udc->ep0_dir = USB_DIR_IN;
2133                 spin_unlock(&udc->lock);
2134                 if (udc->driver->setup(&udc->gadget,
2135                                         &udc->local_setup_buff) < 0)
2136                         qe_ep0_stall(udc);
2137                 spin_lock(&udc->lock);
2138                 udc->ep0_state = DATA_STATE_NEED_ZLP;
2139         }
2140 }
2141
2142 /*-------------------------------------------------------------------------
2143         USB Interrupt handlers
2144  -------------------------------------------------------------------------*/
2145 static void suspend_irq(struct qe_udc *udc)
2146 {
2147         udc->resume_state = udc->usb_state;
2148         udc->usb_state = USB_STATE_SUSPENDED;
2149
2150         /* report suspend to the driver ,serial.c not support this*/
2151         if (udc->driver->suspend)
2152                 udc->driver->suspend(&udc->gadget);
2153 }
2154
2155 static void resume_irq(struct qe_udc *udc)
2156 {
2157         udc->usb_state = udc->resume_state;
2158         udc->resume_state = 0;
2159
2160         /* report resume to the driver , serial.c not support this*/
2161         if (udc->driver->resume)
2162                 udc->driver->resume(&udc->gadget);
2163 }
2164
2165 static void idle_irq(struct qe_udc *udc)
2166 {
2167         u8 usbs;
2168
2169         usbs = in_8(&udc->usb_regs->usb_usbs);
2170         if (usbs & USB_IDLE_STATUS_MASK) {
2171                 if ((udc->usb_state) != USB_STATE_SUSPENDED)
2172                         suspend_irq(udc);
2173         } else {
2174                 if (udc->usb_state == USB_STATE_SUSPENDED)
2175                         resume_irq(udc);
2176         }
2177 }
2178
2179 static int reset_irq(struct qe_udc *udc)
2180 {
2181         unsigned char i;
2182
2183         if (udc->usb_state == USB_STATE_DEFAULT)
2184                 return 0;
2185
2186         qe_usb_disable();
2187         out_8(&udc->usb_regs->usb_usadr, 0);
2188
2189         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2190                 if (udc->eps[i].init)
2191                         qe_ep_reset(udc, i);
2192         }
2193
2194         reset_queues(udc);
2195         udc->usb_state = USB_STATE_DEFAULT;
2196         udc->ep0_state = WAIT_FOR_SETUP;
2197         udc->ep0_dir = USB_DIR_OUT;
2198         qe_usb_enable();
2199         return 0;
2200 }
2201
2202 static int bsy_irq(struct qe_udc *udc)
2203 {
2204         return 0;
2205 }
2206
2207 static int txe_irq(struct qe_udc *udc)
2208 {
2209         return 0;
2210 }
2211
2212 /* ep0 tx interrupt also in here */
2213 static int tx_irq(struct qe_udc *udc)
2214 {
2215         struct qe_ep *ep;
2216         struct qe_bd __iomem *bd;
2217         int i, res = 0;
2218
2219         if ((udc->usb_state == USB_STATE_ADDRESS)
2220                 && (in_8(&udc->usb_regs->usb_usadr) == 0))
2221                 out_8(&udc->usb_regs->usb_usadr, udc->device_address);
2222
2223         for (i = (USB_MAX_ENDPOINTS-1); ((i >= 0) && (res == 0)); i--) {
2224                 ep = &udc->eps[i];
2225                 if (ep && ep->init && (ep->dir != USB_DIR_OUT)) {
2226                         bd = ep->c_txbd;
2227                         if (!(in_be32((u32 __iomem *)bd) & T_R)
2228                                                 && (in_be32(&bd->buf))) {
2229                                 /* confirm the transmitted bd */
2230                                 if (ep->epnum == 0)
2231                                         res = qe_ep0_txconf(ep);
2232                                 else
2233                                         res = qe_ep_txconf(ep);
2234                         }
2235                 }
2236         }
2237         return res;
2238 }
2239
2240
2241 /* setup packect's rx is handle in the function too */
2242 static void rx_irq(struct qe_udc *udc)
2243 {
2244         struct qe_ep *ep;
2245         struct qe_bd __iomem *bd;
2246         int i;
2247
2248         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2249                 ep = &udc->eps[i];
2250                 if (ep && ep->init && (ep->dir != USB_DIR_IN)) {
2251                         bd = ep->n_rxbd;
2252                         if (!(in_be32((u32 __iomem *)bd) & R_E)
2253                                                 && (in_be32(&bd->buf))) {
2254                                 if (ep->epnum == 0) {
2255                                         qe_ep0_rx(udc);
2256                                 } else {
2257                                         /*non-setup package receive*/
2258                                         qe_ep_rx(ep);
2259                                 }
2260                         }
2261                 }
2262         }
2263 }
2264
2265 static irqreturn_t qe_udc_irq(int irq, void *_udc)
2266 {
2267         struct qe_udc *udc = (struct qe_udc *)_udc;
2268         u16 irq_src;
2269         irqreturn_t status = IRQ_NONE;
2270         unsigned long flags;
2271
2272         spin_lock_irqsave(&udc->lock, flags);
2273
2274         irq_src = in_be16(&udc->usb_regs->usb_usber) &
2275                 in_be16(&udc->usb_regs->usb_usbmr);
2276         /* Clear notification bits */
2277         out_be16(&udc->usb_regs->usb_usber, irq_src);
2278         /* USB Interrupt */
2279         if (irq_src & USB_E_IDLE_MASK) {
2280                 idle_irq(udc);
2281                 irq_src &= ~USB_E_IDLE_MASK;
2282                 status = IRQ_HANDLED;
2283         }
2284
2285         if (irq_src & USB_E_TXB_MASK) {
2286                 tx_irq(udc);
2287                 irq_src &= ~USB_E_TXB_MASK;
2288                 status = IRQ_HANDLED;
2289         }
2290
2291         if (irq_src & USB_E_RXB_MASK) {
2292                 rx_irq(udc);
2293                 irq_src &= ~USB_E_RXB_MASK;
2294                 status = IRQ_HANDLED;
2295         }
2296
2297         if (irq_src & USB_E_RESET_MASK) {
2298                 reset_irq(udc);
2299                 irq_src &= ~USB_E_RESET_MASK;
2300                 status = IRQ_HANDLED;
2301         }
2302
2303         if (irq_src & USB_E_BSY_MASK) {
2304                 bsy_irq(udc);
2305                 irq_src &= ~USB_E_BSY_MASK;
2306                 status = IRQ_HANDLED;
2307         }
2308
2309         if (irq_src & USB_E_TXE_MASK) {
2310                 txe_irq(udc);
2311                 irq_src &= ~USB_E_TXE_MASK;
2312                 status = IRQ_HANDLED;
2313         }
2314
2315         spin_unlock_irqrestore(&udc->lock, flags);
2316
2317         return status;
2318 }
2319
2320 /*-------------------------------------------------------------------------
2321         Gadget driver probe and unregister.
2322  --------------------------------------------------------------------------*/
2323 int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
2324                 int (*bind)(struct usb_gadget *))
2325 {
2326         int retval;
2327         unsigned long flags = 0;
2328
2329         /* standard operations */
2330         if (!udc_controller)
2331                 return -ENODEV;
2332
2333         if (!driver || (driver->speed != USB_SPEED_FULL
2334                         && driver->speed != USB_SPEED_HIGH)
2335                         || !bind || !driver->disconnect || !driver->setup)
2336                 return -EINVAL;
2337
2338         if (udc_controller->driver)
2339                 return -EBUSY;
2340
2341         /* lock is needed but whether should use this lock or another */
2342         spin_lock_irqsave(&udc_controller->lock, flags);
2343
2344         driver->driver.bus = NULL;
2345         /* hook up the driver */
2346         udc_controller->driver = driver;
2347         udc_controller->gadget.dev.driver = &driver->driver;
2348         udc_controller->gadget.speed = (enum usb_device_speed)(driver->speed);
2349         spin_unlock_irqrestore(&udc_controller->lock, flags);
2350
2351         retval = bind(&udc_controller->gadget);
2352         if (retval) {
2353                 dev_err(udc_controller->dev, "bind to %s --> %d",
2354                                 driver->driver.name, retval);
2355                 udc_controller->gadget.dev.driver = NULL;
2356                 udc_controller->driver = NULL;
2357                 return retval;
2358         }
2359
2360         /* Enable IRQ reg and Set usbcmd reg EN bit */
2361         qe_usb_enable();
2362
2363         out_be16(&udc_controller->usb_regs->usb_usber, 0xffff);
2364         out_be16(&udc_controller->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE);
2365         udc_controller->usb_state = USB_STATE_ATTACHED;
2366         udc_controller->ep0_state = WAIT_FOR_SETUP;
2367         udc_controller->ep0_dir = USB_DIR_OUT;
2368         dev_info(udc_controller->dev, "%s bind to driver %s \n",
2369                 udc_controller->gadget.name, driver->driver.name);
2370         return 0;
2371 }
2372 EXPORT_SYMBOL(usb_gadget_probe_driver);
2373
2374 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
2375 {
2376         struct qe_ep *loop_ep;
2377         unsigned long flags;
2378
2379         if (!udc_controller)
2380                 return -ENODEV;
2381
2382         if (!driver || driver != udc_controller->driver)
2383                 return -EINVAL;
2384
2385         /* stop usb controller, disable intr */
2386         qe_usb_disable();
2387
2388         /* in fact, no needed */
2389         udc_controller->usb_state = USB_STATE_ATTACHED;
2390         udc_controller->ep0_state = WAIT_FOR_SETUP;
2391         udc_controller->ep0_dir = 0;
2392
2393         /* stand operation */
2394         spin_lock_irqsave(&udc_controller->lock, flags);
2395         udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
2396         nuke(&udc_controller->eps[0], -ESHUTDOWN);
2397         list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
2398                                 ep.ep_list)
2399                 nuke(loop_ep, -ESHUTDOWN);
2400         spin_unlock_irqrestore(&udc_controller->lock, flags);
2401
2402         /* report disconnect; the controller is already quiesced */
2403         driver->disconnect(&udc_controller->gadget);
2404
2405         /* unbind gadget and unhook driver. */
2406         driver->unbind(&udc_controller->gadget);
2407         udc_controller->gadget.dev.driver = NULL;
2408         udc_controller->driver = NULL;
2409
2410         dev_info(udc_controller->dev, "unregistered gadget driver '%s'\r\n",
2411                         driver->driver.name);
2412         return 0;
2413 }
2414 EXPORT_SYMBOL(usb_gadget_unregister_driver);
2415
2416 /* udc structure's alloc and setup, include ep-param alloc */
2417 static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev)
2418 {
2419         struct qe_udc *udc;
2420         struct device_node *np = ofdev->dev.of_node;
2421         unsigned int tmp_addr = 0;
2422         struct usb_device_para __iomem *usbpram;
2423         unsigned int i;
2424         u64 size;
2425         u32 offset;
2426
2427         udc = kzalloc(sizeof(*udc), GFP_KERNEL);
2428         if (udc == NULL) {
2429                 dev_err(&ofdev->dev, "malloc udc failed\n");
2430                 goto cleanup;
2431         }
2432
2433         udc->dev = &ofdev->dev;
2434
2435         /* get default address of usb parameter in MURAM from device tree */
2436         offset = *of_get_address(np, 1, &size, NULL);
2437         udc->usb_param = cpm_muram_addr(offset);
2438         memset_io(udc->usb_param, 0, size);
2439
2440         usbpram = udc->usb_param;
2441         out_be16(&usbpram->frame_n, 0);
2442         out_be32(&usbpram->rstate, 0);
2443
2444         tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS *
2445                                         sizeof(struct usb_ep_para)),
2446                                            USB_EP_PARA_ALIGNMENT);
2447         if (IS_ERR_VALUE(tmp_addr))
2448                 goto cleanup;
2449
2450         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2451                 out_be16(&usbpram->epptr[i], (u16)tmp_addr);
2452                 udc->ep_param[i] = cpm_muram_addr(tmp_addr);
2453                 tmp_addr += 32;
2454         }
2455
2456         memset_io(udc->ep_param[0], 0,
2457                         USB_MAX_ENDPOINTS * sizeof(struct usb_ep_para));
2458
2459         udc->resume_state = USB_STATE_NOTATTACHED;
2460         udc->usb_state = USB_STATE_POWERED;
2461         udc->ep0_dir = 0;
2462
2463         spin_lock_init(&udc->lock);
2464         return udc;
2465
2466 cleanup:
2467         kfree(udc);
2468         return NULL;
2469 }
2470
2471 /* USB Controller register init */
2472 static int __devinit qe_udc_reg_init(struct qe_udc *udc)
2473 {
2474         struct usb_ctlr __iomem *qe_usbregs;
2475         qe_usbregs = udc->usb_regs;
2476
2477         /* Spec says that we must enable the USB controller to change mode. */
2478         out_8(&qe_usbregs->usb_usmod, 0x01);
2479         /* Mode changed, now disable it, since muram isn't initialized yet. */
2480         out_8(&qe_usbregs->usb_usmod, 0x00);
2481
2482         /* Initialize the rest. */
2483         out_be16(&qe_usbregs->usb_usbmr, 0);
2484         out_8(&qe_usbregs->usb_uscom, 0);
2485         out_be16(&qe_usbregs->usb_usber, USBER_ALL_CLEAR);
2486
2487         return 0;
2488 }
2489
2490 static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num)
2491 {
2492         struct qe_ep *ep = &udc->eps[pipe_num];
2493
2494         ep->udc = udc;
2495         strcpy(ep->name, ep_name[pipe_num]);
2496         ep->ep.name = ep_name[pipe_num];
2497
2498         ep->ep.ops = &qe_ep_ops;
2499         ep->stopped = 1;
2500         ep->ep.maxpacket = (unsigned short) ~0;
2501         ep->desc = NULL;
2502         ep->dir = 0xff;
2503         ep->epnum = (u8)pipe_num;
2504         ep->sent = 0;
2505         ep->last = 0;
2506         ep->init = 0;
2507         ep->rxframe = NULL;
2508         ep->txframe = NULL;
2509         ep->tx_req = NULL;
2510         ep->state = EP_STATE_IDLE;
2511         ep->has_data = 0;
2512
2513         /* the queue lists any req for this ep */
2514         INIT_LIST_HEAD(&ep->queue);
2515
2516         /* gagdet.ep_list used for ep_autoconfig so no ep0*/
2517         if (pipe_num != 0)
2518                 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
2519
2520         ep->gadget = &udc->gadget;
2521
2522         return 0;
2523 }
2524
2525 /*-----------------------------------------------------------------------
2526  *      UDC device Driver operation functions                           *
2527  *----------------------------------------------------------------------*/
2528 static void qe_udc_release(struct device *dev)
2529 {
2530         int i = 0;
2531
2532         complete(udc_controller->done);
2533         cpm_muram_free(cpm_muram_offset(udc_controller->ep_param[0]));
2534         for (i = 0; i < USB_MAX_ENDPOINTS; i++)
2535                 udc_controller->ep_param[i] = NULL;
2536
2537         kfree(udc_controller);
2538         udc_controller = NULL;
2539 }
2540
2541 /* Driver probe functions */
2542 static const struct of_device_id qe_udc_match[];
2543 static int __devinit qe_udc_probe(struct platform_device *ofdev)
2544 {
2545         const struct of_device_id *match;
2546         struct device_node *np = ofdev->dev.of_node;
2547         struct qe_ep *ep;
2548         unsigned int ret = 0;
2549         unsigned int i;
2550         const void *prop;
2551
2552         match = of_match_device(qe_udc_match, &ofdev->dev);
2553         if (!match)
2554                 return -EINVAL;
2555
2556         prop = of_get_property(np, "mode", NULL);
2557         if (!prop || strcmp(prop, "peripheral"))
2558                 return -ENODEV;
2559
2560         /* Initialize the udc structure including QH member and other member */
2561         udc_controller = qe_udc_config(ofdev);
2562         if (!udc_controller) {
2563                 dev_err(&ofdev->dev, "failed to initialize\n");
2564                 return -ENOMEM;
2565         }
2566
2567         udc_controller->soc_type = (unsigned long)match->data;
2568         udc_controller->usb_regs = of_iomap(np, 0);
2569         if (!udc_controller->usb_regs) {
2570                 ret = -ENOMEM;
2571                 goto err1;
2572         }
2573
2574         /* initialize usb hw reg except for regs for EP,
2575          * leave usbintr reg untouched*/
2576         qe_udc_reg_init(udc_controller);
2577
2578         /* here comes the stand operations for probe
2579          * set the qe_udc->gadget.xxx */
2580         udc_controller->gadget.ops = &qe_gadget_ops;
2581
2582         /* gadget.ep0 is a pointer */
2583         udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
2584
2585         INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
2586
2587         /* modify in register gadget process */
2588         udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
2589
2590         /* name: Identifies the controller hardware type. */
2591         udc_controller->gadget.name = driver_name;
2592
2593         device_initialize(&udc_controller->gadget.dev);
2594
2595         dev_set_name(&udc_controller->gadget.dev, "gadget");
2596
2597         udc_controller->gadget.dev.release = qe_udc_release;
2598         udc_controller->gadget.dev.parent = &ofdev->dev;
2599
2600         /* initialize qe_ep struct */
2601         for (i = 0; i < USB_MAX_ENDPOINTS ; i++) {
2602                 /* because the ep type isn't decide here so
2603                  * qe_ep_init() should be called in ep_enable() */
2604
2605                 /* setup the qe_ep struct and link ep.ep.list
2606                  * into gadget.ep_list */
2607                 qe_ep_config(udc_controller, (unsigned char)i);
2608         }
2609
2610         /* ep0 initialization in here */
2611         ret = qe_ep_init(udc_controller, 0, &qe_ep0_desc);
2612         if (ret)
2613                 goto err2;
2614
2615         /* create a buf for ZLP send, need to remain zeroed */
2616         udc_controller->nullbuf = kzalloc(256, GFP_KERNEL);
2617         if (udc_controller->nullbuf == NULL) {
2618                 dev_err(udc_controller->dev, "cannot alloc nullbuf\n");
2619                 ret = -ENOMEM;
2620                 goto err3;
2621         }
2622
2623         /* buffer for data of get_status request */
2624         udc_controller->statusbuf = kzalloc(2, GFP_KERNEL);
2625         if (udc_controller->statusbuf == NULL) {
2626                 ret = -ENOMEM;
2627                 goto err4;
2628         }
2629
2630         udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf);
2631         if (udc_controller->nullp == DMA_ADDR_INVALID) {
2632                 udc_controller->nullp = dma_map_single(
2633                                         udc_controller->gadget.dev.parent,
2634                                         udc_controller->nullbuf,
2635                                         256,
2636                                         DMA_TO_DEVICE);
2637                 udc_controller->nullmap = 1;
2638         } else {
2639                 dma_sync_single_for_device(udc_controller->gadget.dev.parent,
2640                                         udc_controller->nullp, 256,
2641                                         DMA_TO_DEVICE);
2642         }
2643
2644         tasklet_init(&udc_controller->rx_tasklet, ep_rx_tasklet,
2645                         (unsigned long)udc_controller);
2646         /* request irq and disable DR  */
2647         udc_controller->usb_irq = irq_of_parse_and_map(np, 0);
2648         if (!udc_controller->usb_irq) {
2649                 ret = -EINVAL;
2650                 goto err_noirq;
2651         }
2652
2653         ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0,
2654                                 driver_name, udc_controller);
2655         if (ret) {
2656                 dev_err(udc_controller->dev, "cannot request irq %d err %d \n",
2657                         udc_controller->usb_irq, ret);
2658                 goto err5;
2659         }
2660
2661         ret = device_add(&udc_controller->gadget.dev);
2662         if (ret)
2663                 goto err6;
2664
2665         dev_info(udc_controller->dev,
2666                         "%s USB controller initialized as device\n",
2667                         (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM");
2668         return 0;
2669
2670 err6:
2671         free_irq(udc_controller->usb_irq, udc_controller);
2672 err5:
2673         irq_dispose_mapping(udc_controller->usb_irq);
2674 err_noirq:
2675         if (udc_controller->nullmap) {
2676                 dma_unmap_single(udc_controller->gadget.dev.parent,
2677                         udc_controller->nullp, 256,
2678                                 DMA_TO_DEVICE);
2679                         udc_controller->nullp = DMA_ADDR_INVALID;
2680         } else {
2681                 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2682                         udc_controller->nullp, 256,
2683                                 DMA_TO_DEVICE);
2684         }
2685         kfree(udc_controller->statusbuf);
2686 err4:
2687         kfree(udc_controller->nullbuf);
2688 err3:
2689         ep = &udc_controller->eps[0];
2690         cpm_muram_free(cpm_muram_offset(ep->rxbase));
2691         kfree(ep->rxframe);
2692         kfree(ep->rxbuffer);
2693         kfree(ep->txframe);
2694 err2:
2695         iounmap(udc_controller->usb_regs);
2696 err1:
2697         kfree(udc_controller);
2698         udc_controller = NULL;
2699         return ret;
2700 }
2701
2702 #ifdef CONFIG_PM
2703 static int qe_udc_suspend(struct platform_device *dev, pm_message_t state)
2704 {
2705         return -ENOTSUPP;
2706 }
2707
2708 static int qe_udc_resume(struct platform_device *dev)
2709 {
2710         return -ENOTSUPP;
2711 }
2712 #endif
2713
2714 static int __devexit qe_udc_remove(struct platform_device *ofdev)
2715 {
2716         struct qe_ep *ep;
2717         unsigned int size;
2718
2719         DECLARE_COMPLETION(done);
2720
2721         if (!udc_controller)
2722                 return -ENODEV;
2723
2724         udc_controller->done = &done;
2725         tasklet_disable(&udc_controller->rx_tasklet);
2726
2727         if (udc_controller->nullmap) {
2728                 dma_unmap_single(udc_controller->gadget.dev.parent,
2729                         udc_controller->nullp, 256,
2730                                 DMA_TO_DEVICE);
2731                         udc_controller->nullp = DMA_ADDR_INVALID;
2732         } else {
2733                 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2734                         udc_controller->nullp, 256,
2735                                 DMA_TO_DEVICE);
2736         }
2737         kfree(udc_controller->statusbuf);
2738         kfree(udc_controller->nullbuf);
2739
2740         ep = &udc_controller->eps[0];
2741         cpm_muram_free(cpm_muram_offset(ep->rxbase));
2742         size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1);
2743
2744         kfree(ep->rxframe);
2745         if (ep->rxbufmap) {
2746                 dma_unmap_single(udc_controller->gadget.dev.parent,
2747                                 ep->rxbuf_d, size,
2748                                 DMA_FROM_DEVICE);
2749                 ep->rxbuf_d = DMA_ADDR_INVALID;
2750         } else {
2751                 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2752                                 ep->rxbuf_d, size,
2753                                 DMA_FROM_DEVICE);
2754         }
2755
2756         kfree(ep->rxbuffer);
2757         kfree(ep->txframe);
2758
2759         free_irq(udc_controller->usb_irq, udc_controller);
2760         irq_dispose_mapping(udc_controller->usb_irq);
2761
2762         tasklet_kill(&udc_controller->rx_tasklet);
2763
2764         iounmap(udc_controller->usb_regs);
2765
2766         device_unregister(&udc_controller->gadget.dev);
2767         /* wait for release() of gadget.dev to free udc */
2768         wait_for_completion(&done);
2769
2770         return 0;
2771 }
2772
2773 /*-------------------------------------------------------------------------*/
2774 static const struct of_device_id qe_udc_match[] __devinitconst = {
2775         {
2776                 .compatible = "fsl,mpc8323-qe-usb",
2777                 .data = (void *)PORT_QE,
2778         },
2779         {
2780                 .compatible = "fsl,mpc8360-qe-usb",
2781                 .data = (void *)PORT_QE,
2782         },
2783         {
2784                 .compatible = "fsl,mpc8272-cpm-usb",
2785                 .data = (void *)PORT_CPM,
2786         },
2787         {},
2788 };
2789
2790 MODULE_DEVICE_TABLE(of, qe_udc_match);
2791
2792 static struct platform_driver udc_driver = {
2793         .driver = {
2794                 .name = (char *)driver_name,
2795                 .owner = THIS_MODULE,
2796                 .of_match_table = qe_udc_match,
2797         },
2798         .probe          = qe_udc_probe,
2799         .remove         = __devexit_p(qe_udc_remove),
2800 #ifdef CONFIG_PM
2801         .suspend        = qe_udc_suspend,
2802         .resume         = qe_udc_resume,
2803 #endif
2804 };
2805
2806 static int __init qe_udc_init(void)
2807 {
2808         printk(KERN_INFO "%s: %s, %s\n", driver_name, driver_desc,
2809                         DRIVER_VERSION);
2810         return platform_driver_register(&udc_driver);
2811 }
2812
2813 static void __exit qe_udc_exit(void)
2814 {
2815         platform_driver_unregister(&udc_driver);
2816 }
2817
2818 module_init(qe_udc_init);
2819 module_exit(qe_udc_exit);
2820
2821 MODULE_DESCRIPTION(DRIVER_DESC);
2822 MODULE_AUTHOR(DRIVER_AUTHOR);
2823 MODULE_LICENSE("GPL");
2824