2 * Copyright 2011, Marvell Semiconductor Inc.
3 * Lei Wen <leiwen@marvell.com>
5 * SPDX-License-Identifier: GPL-2.0+
7 * Back ported to the 8xx platform (from the 8260 platform) by
8 * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
16 #include <asm/byteorder.h>
17 #include <linux/errno.h>
19 #include <asm/unaligned.h>
20 #include <linux/types.h>
21 #include <linux/usb/ch9.h>
22 #include <linux/usb/gadget.h>
23 #include <usb/ci_udc.h>
24 #include "../host/ehci.h"
28 * Check if the system has too long cachelines. If the cachelines are
29 * longer then 128b, the driver will not be able flush/invalidate data
30 * cache over separate QH entries. We use 128b because one QH entry is
31 * 64b long and there are always two QH list entries for each endpoint.
33 #if ARCH_DMA_MINALIGN > 128
34 #error This driver can not work on systems with caches longer than 128b
38 * Every QTD must be individually aligned, since we can program any
39 * QTD's address into HW. Cache flushing requires ARCH_DMA_MINALIGN,
40 * and the USB HW requires 32-byte alignment. Align to both:
42 #define ILIST_ALIGN roundup(ARCH_DMA_MINALIGN, 32)
43 /* Each QTD is this size */
44 #define ILIST_ENT_RAW_SZ sizeof(struct ept_queue_item)
46 * Align the size of the QTD too, so we can add this value to each
47 * QTD's address to get another aligned address.
49 #define ILIST_ENT_SZ roundup(ILIST_ENT_RAW_SZ, ILIST_ALIGN)
50 /* For each endpoint, we need 2 QTDs, one for each of IN and OUT */
51 #define ILIST_SZ (NUM_ENDPOINTS * 2 * ILIST_ENT_SZ)
53 #define EP_MAX_LENGTH_TRANSFER 0x4000
56 #define DBG(x...) do {} while (0)
58 #define DBG(x...) printf(x)
59 static const char *reqname(unsigned r)
62 case USB_REQ_GET_STATUS: return "GET_STATUS";
63 case USB_REQ_CLEAR_FEATURE: return "CLEAR_FEATURE";
64 case USB_REQ_SET_FEATURE: return "SET_FEATURE";
65 case USB_REQ_SET_ADDRESS: return "SET_ADDRESS";
66 case USB_REQ_GET_DESCRIPTOR: return "GET_DESCRIPTOR";
67 case USB_REQ_SET_DESCRIPTOR: return "SET_DESCRIPTOR";
68 case USB_REQ_GET_CONFIGURATION: return "GET_CONFIGURATION";
69 case USB_REQ_SET_CONFIGURATION: return "SET_CONFIGURATION";
70 case USB_REQ_GET_INTERFACE: return "GET_INTERFACE";
71 case USB_REQ_SET_INTERFACE: return "SET_INTERFACE";
72 default: return "*UNKNOWN*";
77 static struct usb_endpoint_descriptor ep0_desc = {
78 .bLength = sizeof(struct usb_endpoint_descriptor),
79 .bDescriptorType = USB_DT_ENDPOINT,
80 .bEndpointAddress = USB_DIR_IN,
81 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
84 static int ci_pullup(struct usb_gadget *gadget, int is_on);
85 static int ci_ep_enable(struct usb_ep *ep,
86 const struct usb_endpoint_descriptor *desc);
87 static int ci_ep_disable(struct usb_ep *ep);
88 static int ci_ep_queue(struct usb_ep *ep,
89 struct usb_request *req, gfp_t gfp_flags);
90 static int ci_ep_dequeue(struct usb_ep *ep, struct usb_request *req);
91 static struct usb_request *
92 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
93 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
95 static struct usb_gadget_ops ci_udc_ops = {
99 static struct usb_ep_ops ci_ep_ops = {
100 .enable = ci_ep_enable,
101 .disable = ci_ep_disable,
102 .queue = ci_ep_queue,
103 .dequeue = ci_ep_dequeue,
104 .alloc_request = ci_ep_alloc_request,
105 .free_request = ci_ep_free_request,
108 /* Init values for USB endpoints. */
109 static const struct usb_ep ci_ep_init[5] = {
117 .name = "ep1in-bulk",
122 .name = "ep2out-bulk",
137 static struct ci_drv controller = {
146 * ci_get_qh() - return queue head for endpoint
147 * @ep_num: Endpoint number
148 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
150 * This function returns the QH associated with particular endpoint
151 * and it's direction.
153 static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
155 return &controller.epts[(ep_num * 2) + dir_in];
159 * ci_get_qtd() - return queue item for endpoint
160 * @ep_num: Endpoint number
161 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
163 * This function returns the QH associated with particular endpoint
164 * and it's direction.
166 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
168 int index = (ep_num * 2) + dir_in;
169 uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
170 return (struct ept_queue_item *)imem;
174 * ci_flush_qh - flush cache over queue head
175 * @ep_num: Endpoint number
177 * This function flushes cache over QH for particular endpoint.
179 static void ci_flush_qh(int ep_num)
181 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
182 const unsigned long start = (unsigned long)head;
183 const unsigned long end = start + 2 * sizeof(*head);
185 flush_dcache_range(start, end);
189 * ci_invalidate_qh - invalidate cache over queue head
190 * @ep_num: Endpoint number
192 * This function invalidates cache over QH for particular endpoint.
194 static void ci_invalidate_qh(int ep_num)
196 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
197 unsigned long start = (unsigned long)head;
198 unsigned long end = start + 2 * sizeof(*head);
200 invalidate_dcache_range(start, end);
204 * ci_flush_qtd - flush cache over queue item
205 * @ep_num: Endpoint number
207 * This function flushes cache over qTD pair for particular endpoint.
209 static void ci_flush_qtd(int ep_num)
211 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
212 const unsigned long start = (unsigned long)item;
213 const unsigned long end = start + 2 * ILIST_ENT_SZ;
215 flush_dcache_range(start, end);
219 * ci_flush_td - flush cache over queue item
222 * This function flushes cache for particular transfer descriptor.
224 static void ci_flush_td(struct ept_queue_item *td)
226 const unsigned long start = (unsigned long)td;
227 const unsigned long end = (unsigned long)td + ILIST_ENT_SZ;
228 flush_dcache_range(start, end);
232 * ci_invalidate_qtd - invalidate cache over queue item
233 * @ep_num: Endpoint number
235 * This function invalidates cache over qTD pair for particular endpoint.
237 static void ci_invalidate_qtd(int ep_num)
239 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
240 const unsigned long start = (unsigned long)item;
241 const unsigned long end = start + 2 * ILIST_ENT_SZ;
243 invalidate_dcache_range(start, end);
247 * ci_invalidate_td - invalidate cache over queue item
250 * This function invalidates cache for particular transfer descriptor.
252 static void ci_invalidate_td(struct ept_queue_item *td)
254 const unsigned long start = (unsigned long)td;
255 const unsigned long end = start + ILIST_ENT_SZ;
256 invalidate_dcache_range(start, end);
259 static struct usb_request *
260 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
262 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
264 struct ci_req *ci_req;
267 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
269 if (num == 0 && controller.ep0_req)
270 return &controller.ep0_req->req;
272 ci_req = calloc(1, sizeof(*ci_req));
276 INIT_LIST_HEAD(&ci_req->queue);
279 controller.ep0_req = ci_req;
284 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req)
286 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
287 struct ci_req *ci_req = container_of(req, struct ci_req, req);
291 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
294 if (!controller.ep0_req)
296 controller.ep0_req = 0;
304 static void ep_enable(int num, int in, int maxpacket)
306 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
309 n = readl(&udc->epctrl[num]);
311 n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
313 n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
316 struct ept_queue_head *head = ci_get_qh(num, in);
318 head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
321 writel(n, &udc->epctrl[num]);
324 static int ci_ep_enable(struct usb_ep *ep,
325 const struct usb_endpoint_descriptor *desc)
327 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
329 num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
330 in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
334 int max = get_unaligned_le16(&desc->wMaxPacketSize);
336 if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
338 if (ep->maxpacket != max) {
339 DBG("%s: from %d to %d\n", __func__,
344 ep_enable(num, in, ep->maxpacket);
345 DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
349 static int ci_ep_disable(struct usb_ep *ep)
351 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
357 static int ci_bounce(struct ci_req *ci_req, int in)
359 struct usb_request *req = &ci_req->req;
360 unsigned long addr = (unsigned long)req->buf;
361 unsigned long hwaddr;
362 uint32_t aligned_used_len;
364 /* Input buffer address is not aligned. */
365 if (addr & (ARCH_DMA_MINALIGN - 1))
368 /* Input buffer length is not aligned. */
369 if (req->length & (ARCH_DMA_MINALIGN - 1))
372 /* The buffer is well aligned, only flush cache. */
373 ci_req->hw_len = req->length;
374 ci_req->hw_buf = req->buf;
378 if (ci_req->b_buf && req->length > ci_req->b_len) {
382 if (!ci_req->b_buf) {
383 ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN);
384 ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len);
388 ci_req->hw_len = ci_req->b_len;
389 ci_req->hw_buf = ci_req->b_buf;
392 memcpy(ci_req->hw_buf, req->buf, req->length);
395 hwaddr = (unsigned long)ci_req->hw_buf;
396 aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
397 flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
402 static void ci_debounce(struct ci_req *ci_req, int in)
404 struct usb_request *req = &ci_req->req;
405 unsigned long addr = (unsigned long)req->buf;
406 unsigned long hwaddr = (unsigned long)ci_req->hw_buf;
407 uint32_t aligned_used_len;
412 aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);
413 invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len);
416 return; /* not a bounce */
418 memcpy(req->buf, ci_req->hw_buf, req->actual);
421 static void ci_ep_submit_next_request(struct ci_ep *ci_ep)
423 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
424 struct ept_queue_item *item;
425 struct ept_queue_head *head;
426 int bit, num, len, in;
427 struct ci_req *ci_req;
429 uint32_t len_left, len_this_dtd;
430 struct ept_queue_item *dtd, *qtd;
432 ci_ep->req_primed = true;
434 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
435 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
436 item = ci_get_qtd(num, in);
437 head = ci_get_qh(num, in);
439 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
440 len = ci_req->req.length;
442 head->next = (unsigned long)item;
445 ci_req->dtd_count = 0;
446 buf = ci_req->hw_buf;
451 len_this_dtd = min(len_left, (unsigned)EP_MAX_LENGTH_TRANSFER);
453 dtd->info = INFO_BYTES(len_this_dtd) | INFO_ACTIVE;
454 dtd->page0 = (unsigned long)buf;
455 dtd->page1 = ((unsigned long)buf & 0xfffff000) + 0x1000;
456 dtd->page2 = ((unsigned long)buf & 0xfffff000) + 0x2000;
457 dtd->page3 = ((unsigned long)buf & 0xfffff000) + 0x3000;
458 dtd->page4 = ((unsigned long)buf & 0xfffff000) + 0x4000;
460 len_left -= len_this_dtd;
464 qtd = (struct ept_queue_item *)
465 memalign(ILIST_ALIGN, ILIST_ENT_SZ);
466 dtd->next = (unsigned long)qtd;
468 memset(dtd, 0, ILIST_ENT_SZ);
476 * When sending the data for an IN transaction, the attached host
477 * knows that all data for the IN is sent when one of the following
479 * a) A zero-length packet is transmitted.
480 * b) A packet with length that isn't an exact multiple of the ep's
481 * maxpacket is transmitted.
482 * c) Enough data is sent to exactly fill the host's maximum expected
483 * IN transaction size.
485 * One of these conditions MUST apply at the end of an IN transaction,
486 * or the transaction will not be considered complete by the host. If
487 * none of (a)..(c) already applies, then we must force (a) to apply
488 * by explicitly sending an extra zero-length packet.
491 if (in && len && !(len % ci_ep->ep.maxpacket) && ci_req->req.zero) {
493 * Each endpoint has 2 items allocated, even though typically
494 * only 1 is used at a time since either an IN or an OUT but
495 * not both is queued. For an IN transaction, item currently
496 * points at the second of these items, so we know that we
497 * can use the other to transmit the extra zero-length packet.
499 struct ept_queue_item *other_item = ci_get_qtd(num, 0);
500 item->next = (unsigned long)other_item;
502 item->info = INFO_ACTIVE;
505 item->next = TERMINATE;
506 item->info |= INFO_IOC;
510 item = (struct ept_queue_item *)(unsigned long)head->next;
511 while (item->next != TERMINATE) {
512 ci_flush_td((struct ept_queue_item *)(unsigned long)item->next);
513 item = (struct ept_queue_item *)(unsigned long)item->next;
516 DBG("ept%d %s queue len %x, req %p, buffer %p\n",
517 num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
525 writel(bit, &udc->epprime);
528 static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
530 struct ci_ep *ci_ep = container_of(_ep, struct ci_ep, ep);
531 struct ci_req *ci_req;
533 list_for_each_entry(ci_req, &ci_ep->queue, queue) {
534 if (&ci_req->req == _req)
538 if (&ci_req->req != _req)
541 list_del_init(&ci_req->queue);
543 if (ci_req->req.status == -EINPROGRESS) {
544 ci_req->req.status = -ECONNRESET;
545 if (ci_req->req.complete)
546 ci_req->req.complete(_ep, _req);
552 static int ci_ep_queue(struct usb_ep *ep,
553 struct usb_request *req, gfp_t gfp_flags)
555 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
556 struct ci_req *ci_req = container_of(req, struct ci_req, req);
558 int __maybe_unused num;
560 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
561 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
563 if (!num && ci_ep->req_primed) {
565 * The flipping of ep0 between IN and OUT relies on
566 * ci_ep_queue consuming the current IN/OUT setting
567 * immediately. If this is deferred to a later point when the
568 * req is pulled out of ci_req->queue, then the IN/OUT setting
569 * may have been changed since the req was queued, and state
570 * will get out of sync. This condition doesn't occur today,
571 * but could if bugs were introduced later, and this error
572 * check will save a lot of debugging time.
574 printf("%s: ep0 transaction already in progress\n", __func__);
578 ret = ci_bounce(ci_req, in);
582 DBG("ept%d %s pre-queue req %p, buffer %p\n",
583 num, in ? "in" : "out", ci_req, ci_req->hw_buf);
584 list_add_tail(&ci_req->queue, &ci_ep->queue);
586 if (!ci_ep->req_primed)
587 ci_ep_submit_next_request(ci_ep);
592 static void flip_ep0_direction(void)
594 if (ep0_desc.bEndpointAddress == USB_DIR_IN) {
595 DBG("%s: Flipping ep0 to OUT\n", __func__);
596 ep0_desc.bEndpointAddress = 0;
598 DBG("%s: Flipping ep0 to IN\n", __func__);
599 ep0_desc.bEndpointAddress = USB_DIR_IN;
603 static void handle_ep_complete(struct ci_ep *ci_ep)
605 struct ept_queue_item *item, *next_td;
607 struct ci_req *ci_req;
609 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
610 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
611 item = ci_get_qtd(num, in);
612 ci_invalidate_qtd(num);
613 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
617 for (j = 0; j < ci_req->dtd_count; j++) {
618 ci_invalidate_td(next_td);
620 len += (item->info >> 16) & 0x7fff;
621 if (item->info & 0xff)
622 printf("EP%d/%s FAIL info=%x pg0=%x\n",
623 num, in ? "in" : "out", item->info, item->page0);
624 if (j != ci_req->dtd_count - 1)
625 next_td = (struct ept_queue_item *)(unsigned long)
631 list_del_init(&ci_req->queue);
632 ci_ep->req_primed = false;
634 if (!list_empty(&ci_ep->queue))
635 ci_ep_submit_next_request(ci_ep);
637 ci_req->req.actual = ci_req->req.length - len;
638 ci_debounce(ci_req, in);
640 DBG("ept%d %s req %p, complete %x\n",
641 num, in ? "in" : "out", ci_req, len);
642 if (num != 0 || controller.ep0_data_phase)
643 ci_req->req.complete(&ci_ep->ep, &ci_req->req);
644 if (num == 0 && controller.ep0_data_phase) {
646 * Data Stage is complete, so flip ep0 dir for Status Stage,
647 * which always transfers a packet in the opposite direction.
649 DBG("%s: flip ep0 dir for Status Stage\n", __func__);
650 flip_ep0_direction();
651 controller.ep0_data_phase = false;
652 ci_req->req.length = 0;
653 usb_ep_queue(&ci_ep->ep, &ci_req->req, 0);
657 #define SETUP(type, request) (((type) << 8) | (request))
659 static void handle_setup(void)
661 struct ci_ep *ci_ep = &controller.ep[0];
662 struct ci_req *ci_req;
663 struct usb_request *req;
664 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
665 struct ept_queue_head *head;
666 struct usb_ctrlrequest r;
668 int num, in, _num, _in, i;
671 ci_req = controller.ep0_req;
673 head = ci_get_qh(0, 0); /* EP0 OUT */
676 memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
677 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
678 writel(EPT_RX(0), &udc->epsetupstat);
680 writel(EPT_RX(0), &udc->epstat);
682 DBG("handle setup %s, %x, %x index %x value %x length %x\n",
683 reqname(r.bRequest), r.bRequestType, r.bRequest, r.wIndex,
684 r.wValue, r.wLength);
686 /* Set EP0 dir for Data Stage based on Setup Stage data */
687 if (r.bRequestType & USB_DIR_IN) {
688 DBG("%s: Set ep0 to IN for Data Stage\n", __func__);
689 ep0_desc.bEndpointAddress = USB_DIR_IN;
691 DBG("%s: Set ep0 to OUT for Data Stage\n", __func__);
692 ep0_desc.bEndpointAddress = 0;
695 controller.ep0_data_phase = true;
697 /* 0 length -> no Data Stage. Flip dir for Status Stage */
698 DBG("%s: 0 length: flip ep0 dir for Status Stage\n", __func__);
699 flip_ep0_direction();
700 controller.ep0_data_phase = false;
703 list_del_init(&ci_req->queue);
704 ci_ep->req_primed = false;
706 switch (SETUP(r.bRequestType, r.bRequest)) {
707 case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
708 _num = r.wIndex & 15;
709 _in = !!(r.wIndex & 0x80);
711 if ((r.wValue == 0) && (r.wLength == 0)) {
713 for (i = 0; i < NUM_ENDPOINTS; i++) {
714 struct ci_ep *ep = &controller.ep[i];
718 num = ep->desc->bEndpointAddress
719 & USB_ENDPOINT_NUMBER_MASK;
720 in = (ep->desc->bEndpointAddress
722 if ((num == _num) && (in == _in)) {
723 ep_enable(num, in, ep->ep.maxpacket);
724 usb_ep_queue(controller.gadget.ep0,
732 case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
734 * write address delayed (will take effect
735 * after the next IN txn)
737 writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
739 usb_ep_queue(controller.gadget.ep0, req, 0);
742 case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
744 buf = (char *)req->buf;
745 buf[0] = 1 << USB_DEVICE_SELF_POWERED;
747 usb_ep_queue(controller.gadget.ep0, req, 0);
750 /* pass request up to the gadget driver */
751 if (controller.driver)
752 status = controller.driver->setup(&controller.gadget, &r);
758 DBG("STALL reqname %s type %x value %x, index %x\n",
759 reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
760 writel((1<<16) | (1 << 0), &udc->epctrl[0]);
763 static void stop_activity(void)
766 struct ept_queue_head *head;
767 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
768 writel(readl(&udc->epcomp), &udc->epcomp);
769 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
770 writel(readl(&udc->epsetupstat), &udc->epsetupstat);
772 writel(readl(&udc->epstat), &udc->epstat);
773 writel(0xffffffff, &udc->epflush);
775 /* error out any pending reqs */
776 for (i = 0; i < NUM_ENDPOINTS; i++) {
778 writel(0, &udc->epctrl[i]);
779 if (controller.ep[i].desc) {
780 num = controller.ep[i].desc->bEndpointAddress
781 & USB_ENDPOINT_NUMBER_MASK;
782 in = (controller.ep[i].desc->bEndpointAddress
784 head = ci_get_qh(num, in);
785 head->info = INFO_ACTIVE;
793 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
794 unsigned n = readl(&udc->usbsts);
795 writel(n, &udc->usbsts);
798 n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
803 DBG("-- reset --\n");
807 DBG("-- suspend --\n");
811 int speed = USB_SPEED_FULL;
813 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
814 bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
816 bit = (readl(&udc->portsc) >> 26) & 3;
818 DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
820 speed = USB_SPEED_HIGH;
823 controller.gadget.speed = speed;
824 for (i = 1; i < NUM_ENDPOINTS; i++) {
825 if (controller.ep[i].ep.maxpacket > max)
826 controller.ep[i].ep.maxpacket = max;
831 printf("<UEI %x>\n", readl(&udc->epcomp));
833 if ((n & STS_UI) || (n & STS_UEI)) {
834 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
835 n = readl(&udc->epsetupstat);
837 n = readl(&udc->epstat);
842 n = readl(&udc->epcomp);
844 writel(n, &udc->epcomp);
846 for (i = 0; i < NUM_ENDPOINTS && n; i++) {
847 if (controller.ep[i].desc) {
848 num = controller.ep[i].desc->bEndpointAddress
849 & USB_ENDPOINT_NUMBER_MASK;
850 in = (controller.ep[i].desc->bEndpointAddress
852 bit = (in) ? EPT_TX(num) : EPT_RX(num);
854 handle_ep_complete(&controller.ep[i]);
860 int usb_gadget_handle_interrupts(int index)
863 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
865 value = readl(&udc->usbsts);
872 void udc_disconnect(void)
874 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
877 writel(USBCMD_FS2, &udc->usbcmd);
879 if (controller.driver)
880 controller.driver->disconnect(&controller.gadget);
883 static int ci_pullup(struct usb_gadget *gadget, int is_on)
885 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
888 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
891 writel((unsigned long)controller.epts, &udc->epinitaddr);
893 /* select DEVICE mode */
894 writel(USBMODE_DEVICE, &udc->usbmode);
896 #if !defined(CONFIG_USB_GADGET_DUALSPEED)
897 /* Port force Full-Speed Connect */
898 setbits_le32(&udc->portsc, PFSC);
901 writel(0xffffffff, &udc->epflush);
903 /* Turn on the USB connection by enabling the pullup resistor */
904 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
912 static int ci_udc_probe(void)
914 struct ept_queue_head *head;
917 const int num = 2 * NUM_ENDPOINTS;
919 const int eplist_min_align = 4096;
920 const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN);
921 const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
922 const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
924 /* The QH list must be aligned to 4096 bytes. */
925 controller.epts = memalign(eplist_align, eplist_sz);
926 if (!controller.epts)
928 memset(controller.epts, 0, eplist_sz);
930 controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ);
931 if (!controller.items_mem) {
932 free(controller.epts);
935 memset(controller.items_mem, 0, ILIST_SZ);
937 for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
939 * Configure QH for each endpoint. The structure of the QH list
940 * is such that each two subsequent fields, N and N+1 where N is
941 * even, in the QH list represent QH for one endpoint. The Nth
942 * entry represents OUT configuration and the N+1th entry does
943 * represent IN configuration of the endpoint.
945 head = controller.epts + i;
947 head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
948 | CONFIG_ZLT | CONFIG_IOS;
950 head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
952 head->next = TERMINATE;
961 INIT_LIST_HEAD(&controller.gadget.ep_list);
964 memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init));
965 controller.ep[0].desc = &ep0_desc;
966 INIT_LIST_HEAD(&controller.ep[0].queue);
967 controller.ep[0].req_primed = false;
968 controller.gadget.ep0 = &controller.ep[0].ep;
969 INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
972 for (i = 1; i < 4; i++) {
973 memcpy(&controller.ep[i].ep, &ci_ep_init[i],
974 sizeof(*ci_ep_init));
975 INIT_LIST_HEAD(&controller.ep[i].queue);
976 controller.ep[i].req_primed = false;
977 list_add_tail(&controller.ep[i].ep.ep_list,
978 &controller.gadget.ep_list);
982 for (i = 4; i < NUM_ENDPOINTS; i++) {
983 memcpy(&controller.ep[i].ep, &ci_ep_init[4],
984 sizeof(*ci_ep_init));
985 INIT_LIST_HEAD(&controller.ep[i].queue);
986 controller.ep[i].req_primed = false;
987 list_add_tail(&controller.ep[i].ep.ep_list,
988 &controller.gadget.ep_list);
991 ci_ep_alloc_request(&controller.ep[0].ep, 0);
992 if (!controller.ep0_req) {
993 free(controller.items_mem);
994 free(controller.epts);
1001 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1007 if (!driver->bind || !driver->setup || !driver->disconnect)
1009 if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
1012 #ifdef CONFIG_DM_USB
1013 ret = usb_setup_ehci_gadget(&controller.ctrl);
1015 ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
1020 ret = ci_udc_probe();
1022 DBG("udc probe failed, returned %d\n", ret);
1026 ret = driver->bind(&controller.gadget);
1028 DBG("driver->bind() returned %d\n", ret);
1031 controller.driver = driver;
1036 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1040 driver->unbind(&controller.gadget);
1041 controller.driver = NULL;
1043 ci_ep_free_request(&controller.ep[0].ep, &controller.ep0_req->req);
1044 free(controller.items_mem);
1045 free(controller.epts);
1050 bool dfu_usb_get_reset(void)
1052 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
1054 return !!(readl(&udc->usbsts) & STS_URI);