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