1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2011, Marvell Semiconductor Inc.
4 * Lei Wen <leiwen@marvell.com>
6 * Back ported to the 8xx platform (from the 8260 platform) by
7 * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
15 #include <asm/byteorder.h>
16 #include <linux/errno.h>
18 #include <asm/unaligned.h>
19 #include <linux/types.h>
20 #include <linux/usb/ch9.h>
21 #include <linux/usb/gadget.h>
22 #include <usb/ci_udc.h>
23 #include "../host/ehci.h"
27 * Check if the system has too long cachelines. If the cachelines are
28 * longer then 128b, the driver will not be able flush/invalidate data
29 * cache over separate QH entries. We use 128b because one QH entry is
30 * 64b long and there are always two QH list entries for each endpoint.
32 #if ARCH_DMA_MINALIGN > 128
33 #error This driver can not work on systems with caches longer than 128b
37 * Every QTD must be individually aligned, since we can program any
38 * QTD's address into HW. Cache flushing requires ARCH_DMA_MINALIGN,
39 * and the USB HW requires 32-byte alignment. Align to both:
41 #define ILIST_ALIGN roundup(ARCH_DMA_MINALIGN, 32)
42 /* Each QTD is this size */
43 #define ILIST_ENT_RAW_SZ sizeof(struct ept_queue_item)
45 * Align the size of the QTD too, so we can add this value to each
46 * QTD's address to get another aligned address.
48 #define ILIST_ENT_SZ roundup(ILIST_ENT_RAW_SZ, ILIST_ALIGN)
49 /* For each endpoint, we need 2 QTDs, one for each of IN and OUT */
50 #define ILIST_SZ (NUM_ENDPOINTS * 2 * ILIST_ENT_SZ)
52 #define EP_MAX_LENGTH_TRANSFER 0x4000
55 #define DBG(x...) do {} while (0)
57 #define DBG(x...) printf(x)
58 static const char *reqname(unsigned r)
61 case USB_REQ_GET_STATUS: return "GET_STATUS";
62 case USB_REQ_CLEAR_FEATURE: return "CLEAR_FEATURE";
63 case USB_REQ_SET_FEATURE: return "SET_FEATURE";
64 case USB_REQ_SET_ADDRESS: return "SET_ADDRESS";
65 case USB_REQ_GET_DESCRIPTOR: return "GET_DESCRIPTOR";
66 case USB_REQ_SET_DESCRIPTOR: return "SET_DESCRIPTOR";
67 case USB_REQ_GET_CONFIGURATION: return "GET_CONFIGURATION";
68 case USB_REQ_SET_CONFIGURATION: return "SET_CONFIGURATION";
69 case USB_REQ_GET_INTERFACE: return "GET_INTERFACE";
70 case USB_REQ_SET_INTERFACE: return "SET_INTERFACE";
71 default: return "*UNKNOWN*";
76 static struct usb_endpoint_descriptor ep0_desc = {
77 .bLength = sizeof(struct usb_endpoint_descriptor),
78 .bDescriptorType = USB_DT_ENDPOINT,
79 .bEndpointAddress = USB_DIR_IN,
80 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
83 static int ci_pullup(struct usb_gadget *gadget, int is_on);
84 static int ci_ep_enable(struct usb_ep *ep,
85 const struct usb_endpoint_descriptor *desc);
86 static int ci_ep_disable(struct usb_ep *ep);
87 static int ci_ep_queue(struct usb_ep *ep,
88 struct usb_request *req, gfp_t gfp_flags);
89 static int ci_ep_dequeue(struct usb_ep *ep, struct usb_request *req);
90 static struct usb_request *
91 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
92 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
94 static struct usb_gadget_ops ci_udc_ops = {
98 static struct usb_ep_ops ci_ep_ops = {
99 .enable = ci_ep_enable,
100 .disable = ci_ep_disable,
101 .queue = ci_ep_queue,
102 .dequeue = ci_ep_dequeue,
103 .alloc_request = ci_ep_alloc_request,
104 .free_request = ci_ep_free_request,
107 /* Init values for USB endpoints. */
108 static const struct usb_ep ci_ep_init[5] = {
116 .name = "ep1in-bulk",
121 .name = "ep2out-bulk",
136 static struct ci_drv controller = {
145 * ci_get_qh() - return queue head for endpoint
146 * @ep_num: Endpoint number
147 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
149 * This function returns the QH associated with particular endpoint
150 * and it's direction.
152 static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
154 return &controller.epts[(ep_num * 2) + dir_in];
158 * ci_get_qtd() - return queue item for endpoint
159 * @ep_num: Endpoint number
160 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
162 * This function returns the QH associated with particular endpoint
163 * and it's direction.
165 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
167 int index = (ep_num * 2) + dir_in;
168 uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
169 return (struct ept_queue_item *)imem;
173 * ci_flush_qh - flush cache over queue head
174 * @ep_num: Endpoint number
176 * This function flushes cache over QH for particular endpoint.
178 static void ci_flush_qh(int ep_num)
180 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
181 const unsigned long start = (unsigned long)head;
182 const unsigned long end = start + 2 * sizeof(*head);
184 flush_dcache_range(start, end);
188 * ci_invalidate_qh - invalidate cache over queue head
189 * @ep_num: Endpoint number
191 * This function invalidates cache over QH for particular endpoint.
193 static void ci_invalidate_qh(int ep_num)
195 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
196 unsigned long start = (unsigned long)head;
197 unsigned long end = start + 2 * sizeof(*head);
199 invalidate_dcache_range(start, end);
203 * ci_flush_qtd - flush cache over queue item
204 * @ep_num: Endpoint number
206 * This function flushes cache over qTD pair for particular endpoint.
208 static void ci_flush_qtd(int ep_num)
210 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
211 const unsigned long start = (unsigned long)item;
212 const unsigned long end = start + 2 * ILIST_ENT_SZ;
214 flush_dcache_range(start, end);
218 * ci_flush_td - flush cache over queue item
221 * This function flushes cache for particular transfer descriptor.
223 static void ci_flush_td(struct ept_queue_item *td)
225 const unsigned long start = (unsigned long)td;
226 const unsigned long end = (unsigned long)td + ILIST_ENT_SZ;
227 flush_dcache_range(start, end);
231 * ci_invalidate_qtd - invalidate cache over queue item
232 * @ep_num: Endpoint number
234 * This function invalidates cache over qTD pair for particular endpoint.
236 static void ci_invalidate_qtd(int ep_num)
238 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
239 const unsigned long start = (unsigned long)item;
240 const unsigned long end = start + 2 * ILIST_ENT_SZ;
242 invalidate_dcache_range(start, end);
246 * ci_invalidate_td - invalidate cache over queue item
249 * This function invalidates cache for particular transfer descriptor.
251 static void ci_invalidate_td(struct ept_queue_item *td)
253 const unsigned long start = (unsigned long)td;
254 const unsigned long end = start + ILIST_ENT_SZ;
255 invalidate_dcache_range(start, end);
258 static struct usb_request *
259 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
261 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
263 struct ci_req *ci_req;
266 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
268 if (num == 0 && controller.ep0_req)
269 return &controller.ep0_req->req;
271 ci_req = calloc(1, sizeof(*ci_req));
275 INIT_LIST_HEAD(&ci_req->queue);
278 controller.ep0_req = ci_req;
283 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req)
285 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
286 struct ci_req *ci_req = container_of(req, struct ci_req, req);
290 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
293 if (!controller.ep0_req)
295 controller.ep0_req = 0;
303 static void ep_enable(int num, int in, int maxpacket)
305 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
308 n = readl(&udc->epctrl[num]);
310 n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
312 n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
315 struct ept_queue_head *head = ci_get_qh(num, in);
317 head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
320 writel(n, &udc->epctrl[num]);
323 static int ci_ep_enable(struct usb_ep *ep,
324 const struct usb_endpoint_descriptor *desc)
326 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
328 num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
329 in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
333 int max = get_unaligned_le16(&desc->wMaxPacketSize);
335 if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
337 if (ep->maxpacket != max) {
338 DBG("%s: from %d to %d\n", __func__,
343 ep_enable(num, in, ep->maxpacket);
344 DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
348 static int ci_ep_disable(struct usb_ep *ep)
350 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
356 static int ci_bounce(struct ci_req *ci_req, int in)
358 struct usb_request *req = &ci_req->req;
359 unsigned long addr = (unsigned long)req->buf;
360 unsigned long hwaddr;
361 uint32_t aligned_used_len;
363 /* Input buffer address is not aligned. */
364 if (addr & (ARCH_DMA_MINALIGN - 1))
367 /* Input buffer length is not aligned. */
368 if (req->length & (ARCH_DMA_MINALIGN - 1))
371 /* The buffer is well aligned, only flush cache. */
372 ci_req->hw_len = req->length;
373 ci_req->hw_buf = req->buf;
377 if (ci_req->b_buf && req->length > ci_req->b_len) {
381 if (!ci_req->b_buf) {
382 ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN);
383 ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len);
387 ci_req->hw_len = ci_req->b_len;
388 ci_req->hw_buf = ci_req->b_buf;
391 memcpy(ci_req->hw_buf, req->buf, req->length);
394 hwaddr = (unsigned long)ci_req->hw_buf;
395 aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
396 flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
401 static void ci_debounce(struct ci_req *ci_req, int in)
403 struct usb_request *req = &ci_req->req;
404 unsigned long addr = (unsigned long)req->buf;
405 unsigned long hwaddr = (unsigned long)ci_req->hw_buf;
406 uint32_t aligned_used_len;
411 aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);
412 invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len);
415 return; /* not a bounce */
417 memcpy(req->buf, ci_req->hw_buf, req->actual);
420 static void ci_ep_submit_next_request(struct ci_ep *ci_ep)
422 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
423 struct ept_queue_item *item;
424 struct ept_queue_head *head;
425 int bit, num, len, in;
426 struct ci_req *ci_req;
428 uint32_t len_left, len_this_dtd;
429 struct ept_queue_item *dtd, *qtd;
431 ci_ep->req_primed = true;
433 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
434 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
435 item = ci_get_qtd(num, in);
436 head = ci_get_qh(num, in);
438 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
439 len = ci_req->req.length;
441 head->next = (unsigned long)item;
444 ci_req->dtd_count = 0;
445 buf = ci_req->hw_buf;
450 len_this_dtd = min(len_left, (unsigned)EP_MAX_LENGTH_TRANSFER);
452 dtd->info = INFO_BYTES(len_this_dtd) | INFO_ACTIVE;
453 dtd->page0 = (unsigned long)buf;
454 dtd->page1 = ((unsigned long)buf & 0xfffff000) + 0x1000;
455 dtd->page2 = ((unsigned long)buf & 0xfffff000) + 0x2000;
456 dtd->page3 = ((unsigned long)buf & 0xfffff000) + 0x3000;
457 dtd->page4 = ((unsigned long)buf & 0xfffff000) + 0x4000;
459 len_left -= len_this_dtd;
463 qtd = (struct ept_queue_item *)
464 memalign(ILIST_ALIGN, ILIST_ENT_SZ);
465 dtd->next = (unsigned long)qtd;
467 memset(dtd, 0, ILIST_ENT_SZ);
475 * When sending the data for an IN transaction, the attached host
476 * knows that all data for the IN is sent when one of the following
478 * a) A zero-length packet is transmitted.
479 * b) A packet with length that isn't an exact multiple of the ep's
480 * maxpacket is transmitted.
481 * c) Enough data is sent to exactly fill the host's maximum expected
482 * IN transaction size.
484 * One of these conditions MUST apply at the end of an IN transaction,
485 * or the transaction will not be considered complete by the host. If
486 * none of (a)..(c) already applies, then we must force (a) to apply
487 * by explicitly sending an extra zero-length packet.
490 if (in && len && !(len % ci_ep->ep.maxpacket) && ci_req->req.zero) {
492 * Each endpoint has 2 items allocated, even though typically
493 * only 1 is used at a time since either an IN or an OUT but
494 * not both is queued. For an IN transaction, item currently
495 * points at the second of these items, so we know that we
496 * can use the other to transmit the extra zero-length packet.
498 struct ept_queue_item *other_item = ci_get_qtd(num, 0);
499 item->next = (unsigned long)other_item;
501 item->info = INFO_ACTIVE;
504 item->next = TERMINATE;
505 item->info |= INFO_IOC;
509 item = (struct ept_queue_item *)(unsigned long)head->next;
510 while (item->next != TERMINATE) {
511 ci_flush_td((struct ept_queue_item *)(unsigned long)item->next);
512 item = (struct ept_queue_item *)(unsigned long)item->next;
515 DBG("ept%d %s queue len %x, req %p, buffer %p\n",
516 num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
524 writel(bit, &udc->epprime);
527 static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
529 struct ci_ep *ci_ep = container_of(_ep, struct ci_ep, ep);
530 struct ci_req *ci_req;
532 list_for_each_entry(ci_req, &ci_ep->queue, queue) {
533 if (&ci_req->req == _req)
537 if (&ci_req->req != _req)
540 list_del_init(&ci_req->queue);
542 if (ci_req->req.status == -EINPROGRESS) {
543 ci_req->req.status = -ECONNRESET;
544 if (ci_req->req.complete)
545 ci_req->req.complete(_ep, _req);
551 static int ci_ep_queue(struct usb_ep *ep,
552 struct usb_request *req, gfp_t gfp_flags)
554 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
555 struct ci_req *ci_req = container_of(req, struct ci_req, req);
557 int __maybe_unused num;
559 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
560 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
562 if (!num && ci_ep->req_primed) {
564 * The flipping of ep0 between IN and OUT relies on
565 * ci_ep_queue consuming the current IN/OUT setting
566 * immediately. If this is deferred to a later point when the
567 * req is pulled out of ci_req->queue, then the IN/OUT setting
568 * may have been changed since the req was queued, and state
569 * will get out of sync. This condition doesn't occur today,
570 * but could if bugs were introduced later, and this error
571 * check will save a lot of debugging time.
573 printf("%s: ep0 transaction already in progress\n", __func__);
577 ret = ci_bounce(ci_req, in);
581 DBG("ept%d %s pre-queue req %p, buffer %p\n",
582 num, in ? "in" : "out", ci_req, ci_req->hw_buf);
583 list_add_tail(&ci_req->queue, &ci_ep->queue);
585 if (!ci_ep->req_primed)
586 ci_ep_submit_next_request(ci_ep);
591 static void flip_ep0_direction(void)
593 if (ep0_desc.bEndpointAddress == USB_DIR_IN) {
594 DBG("%s: Flipping ep0 to OUT\n", __func__);
595 ep0_desc.bEndpointAddress = 0;
597 DBG("%s: Flipping ep0 to IN\n", __func__);
598 ep0_desc.bEndpointAddress = USB_DIR_IN;
602 static void handle_ep_complete(struct ci_ep *ci_ep)
604 struct ept_queue_item *item, *next_td;
606 struct ci_req *ci_req;
608 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
609 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
610 item = ci_get_qtd(num, in);
611 ci_invalidate_qtd(num);
612 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
616 for (j = 0; j < ci_req->dtd_count; j++) {
617 ci_invalidate_td(next_td);
619 len += (item->info >> 16) & 0x7fff;
620 if (item->info & 0xff)
621 printf("EP%d/%s FAIL info=%x pg0=%x\n",
622 num, in ? "in" : "out", item->info, item->page0);
623 if (j != ci_req->dtd_count - 1)
624 next_td = (struct ept_queue_item *)(unsigned long)
630 list_del_init(&ci_req->queue);
631 ci_ep->req_primed = false;
633 if (!list_empty(&ci_ep->queue))
634 ci_ep_submit_next_request(ci_ep);
636 ci_req->req.actual = ci_req->req.length - len;
637 ci_debounce(ci_req, in);
639 DBG("ept%d %s req %p, complete %x\n",
640 num, in ? "in" : "out", ci_req, len);
641 if (num != 0 || controller.ep0_data_phase)
642 ci_req->req.complete(&ci_ep->ep, &ci_req->req);
643 if (num == 0 && controller.ep0_data_phase) {
645 * Data Stage is complete, so flip ep0 dir for Status Stage,
646 * which always transfers a packet in the opposite direction.
648 DBG("%s: flip ep0 dir for Status Stage\n", __func__);
649 flip_ep0_direction();
650 controller.ep0_data_phase = false;
651 ci_req->req.length = 0;
652 usb_ep_queue(&ci_ep->ep, &ci_req->req, 0);
656 #define SETUP(type, request) (((type) << 8) | (request))
658 static void handle_setup(void)
660 struct ci_ep *ci_ep = &controller.ep[0];
661 struct ci_req *ci_req;
662 struct usb_request *req;
663 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
664 struct ept_queue_head *head;
665 struct usb_ctrlrequest r;
667 int num, in, _num, _in, i;
670 ci_req = controller.ep0_req;
672 head = ci_get_qh(0, 0); /* EP0 OUT */
675 memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
676 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
677 writel(EPT_RX(0), &udc->epsetupstat);
679 writel(EPT_RX(0), &udc->epstat);
681 DBG("handle setup %s, %x, %x index %x value %x length %x\n",
682 reqname(r.bRequest), r.bRequestType, r.bRequest, r.wIndex,
683 r.wValue, r.wLength);
685 /* Set EP0 dir for Data Stage based on Setup Stage data */
686 if (r.bRequestType & USB_DIR_IN) {
687 DBG("%s: Set ep0 to IN for Data Stage\n", __func__);
688 ep0_desc.bEndpointAddress = USB_DIR_IN;
690 DBG("%s: Set ep0 to OUT for Data Stage\n", __func__);
691 ep0_desc.bEndpointAddress = 0;
694 controller.ep0_data_phase = true;
696 /* 0 length -> no Data Stage. Flip dir for Status Stage */
697 DBG("%s: 0 length: flip ep0 dir for Status Stage\n", __func__);
698 flip_ep0_direction();
699 controller.ep0_data_phase = false;
702 list_del_init(&ci_req->queue);
703 ci_ep->req_primed = false;
705 switch (SETUP(r.bRequestType, r.bRequest)) {
706 case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
707 _num = r.wIndex & 15;
708 _in = !!(r.wIndex & 0x80);
710 if ((r.wValue == 0) && (r.wLength == 0)) {
712 for (i = 0; i < NUM_ENDPOINTS; i++) {
713 struct ci_ep *ep = &controller.ep[i];
717 num = ep->desc->bEndpointAddress
718 & USB_ENDPOINT_NUMBER_MASK;
719 in = (ep->desc->bEndpointAddress
721 if ((num == _num) && (in == _in)) {
722 ep_enable(num, in, ep->ep.maxpacket);
723 usb_ep_queue(controller.gadget.ep0,
731 case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
733 * write address delayed (will take effect
734 * after the next IN txn)
736 writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
738 usb_ep_queue(controller.gadget.ep0, req, 0);
741 case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
743 buf = (char *)req->buf;
744 buf[0] = 1 << USB_DEVICE_SELF_POWERED;
746 usb_ep_queue(controller.gadget.ep0, req, 0);
749 /* pass request up to the gadget driver */
750 if (controller.driver)
751 status = controller.driver->setup(&controller.gadget, &r);
757 DBG("STALL reqname %s type %x value %x, index %x\n",
758 reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
759 writel((1<<16) | (1 << 0), &udc->epctrl[0]);
762 static void stop_activity(void)
765 struct ept_queue_head *head;
766 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
767 writel(readl(&udc->epcomp), &udc->epcomp);
768 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
769 writel(readl(&udc->epsetupstat), &udc->epsetupstat);
771 writel(readl(&udc->epstat), &udc->epstat);
772 writel(0xffffffff, &udc->epflush);
774 /* error out any pending reqs */
775 for (i = 0; i < NUM_ENDPOINTS; i++) {
777 writel(0, &udc->epctrl[i]);
778 if (controller.ep[i].desc) {
779 num = controller.ep[i].desc->bEndpointAddress
780 & USB_ENDPOINT_NUMBER_MASK;
781 in = (controller.ep[i].desc->bEndpointAddress
783 head = ci_get_qh(num, in);
784 head->info = INFO_ACTIVE;
792 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
793 unsigned n = readl(&udc->usbsts);
794 writel(n, &udc->usbsts);
797 n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
802 DBG("-- reset --\n");
806 DBG("-- suspend --\n");
810 int speed = USB_SPEED_FULL;
812 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
813 bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
815 bit = (readl(&udc->portsc) >> 26) & 3;
817 DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
819 speed = USB_SPEED_HIGH;
822 controller.gadget.speed = speed;
823 for (i = 1; i < NUM_ENDPOINTS; i++) {
824 if (controller.ep[i].ep.maxpacket > max)
825 controller.ep[i].ep.maxpacket = max;
830 printf("<UEI %x>\n", readl(&udc->epcomp));
832 if ((n & STS_UI) || (n & STS_UEI)) {
833 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
834 n = readl(&udc->epsetupstat);
836 n = readl(&udc->epstat);
841 n = readl(&udc->epcomp);
843 writel(n, &udc->epcomp);
845 for (i = 0; i < NUM_ENDPOINTS && n; i++) {
846 if (controller.ep[i].desc) {
847 num = controller.ep[i].desc->bEndpointAddress
848 & USB_ENDPOINT_NUMBER_MASK;
849 in = (controller.ep[i].desc->bEndpointAddress
851 bit = (in) ? EPT_TX(num) : EPT_RX(num);
853 handle_ep_complete(&controller.ep[i]);
859 int usb_gadget_handle_interrupts(int index)
862 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
864 value = readl(&udc->usbsts);
871 void udc_disconnect(void)
873 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
876 writel(USBCMD_FS2, &udc->usbcmd);
878 if (controller.driver)
879 controller.driver->disconnect(&controller.gadget);
882 static int ci_pullup(struct usb_gadget *gadget, int is_on)
884 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
887 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
890 writel((unsigned long)controller.epts, &udc->epinitaddr);
892 /* select DEVICE mode */
893 writel(USBMODE_DEVICE, &udc->usbmode);
895 #if !defined(CONFIG_USB_GADGET_DUALSPEED)
896 /* Port force Full-Speed Connect */
897 setbits_le32(&udc->portsc, PFSC);
900 writel(0xffffffff, &udc->epflush);
902 /* Turn on the USB connection by enabling the pullup resistor */
903 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
911 static int ci_udc_probe(void)
913 struct ept_queue_head *head;
916 const int num = 2 * NUM_ENDPOINTS;
918 const int eplist_min_align = 4096;
919 const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN);
920 const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
921 const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
923 /* The QH list must be aligned to 4096 bytes. */
924 controller.epts = memalign(eplist_align, eplist_sz);
925 if (!controller.epts)
927 memset(controller.epts, 0, eplist_sz);
929 controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ);
930 if (!controller.items_mem) {
931 free(controller.epts);
934 memset(controller.items_mem, 0, ILIST_SZ);
936 for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
938 * Configure QH for each endpoint. The structure of the QH list
939 * is such that each two subsequent fields, N and N+1 where N is
940 * even, in the QH list represent QH for one endpoint. The Nth
941 * entry represents OUT configuration and the N+1th entry does
942 * represent IN configuration of the endpoint.
944 head = controller.epts + i;
946 head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
947 | CONFIG_ZLT | CONFIG_IOS;
949 head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
951 head->next = TERMINATE;
960 INIT_LIST_HEAD(&controller.gadget.ep_list);
963 memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init));
964 controller.ep[0].desc = &ep0_desc;
965 INIT_LIST_HEAD(&controller.ep[0].queue);
966 controller.ep[0].req_primed = false;
967 controller.gadget.ep0 = &controller.ep[0].ep;
968 INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
971 for (i = 1; i < 4; i++) {
972 memcpy(&controller.ep[i].ep, &ci_ep_init[i],
973 sizeof(*ci_ep_init));
974 INIT_LIST_HEAD(&controller.ep[i].queue);
975 controller.ep[i].req_primed = false;
976 list_add_tail(&controller.ep[i].ep.ep_list,
977 &controller.gadget.ep_list);
981 for (i = 4; i < NUM_ENDPOINTS; i++) {
982 memcpy(&controller.ep[i].ep, &ci_ep_init[4],
983 sizeof(*ci_ep_init));
984 INIT_LIST_HEAD(&controller.ep[i].queue);
985 controller.ep[i].req_primed = false;
986 list_add_tail(&controller.ep[i].ep.ep_list,
987 &controller.gadget.ep_list);
990 ci_ep_alloc_request(&controller.ep[0].ep, 0);
991 if (!controller.ep0_req) {
992 free(controller.items_mem);
993 free(controller.epts);
1000 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1006 if (!driver->bind || !driver->setup || !driver->disconnect)
1008 if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
1011 #ifdef CONFIG_DM_USB
1012 ret = usb_setup_ehci_gadget(&controller.ctrl);
1014 ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
1019 ret = ci_udc_probe();
1021 DBG("udc probe failed, returned %d\n", ret);
1025 ret = driver->bind(&controller.gadget);
1027 DBG("driver->bind() returned %d\n", ret);
1030 controller.driver = driver;
1035 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1039 driver->unbind(&controller.gadget);
1040 controller.driver = NULL;
1042 ci_ep_free_request(&controller.ep[0].ep, &controller.ep0_req->req);
1043 free(controller.items_mem);
1044 free(controller.epts);
1049 bool dfu_usb_get_reset(void)
1051 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
1053 return !!(readl(&udc->usbsts) & STS_URI);