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.
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 __weak void ci_init_after_reset(struct ehci_ctrl *ctrl)
112 /* Init values for USB endpoints. */
113 static const struct usb_ep ci_ep_init[5] = {
121 .name = "ep1in-bulk",
126 .name = "ep2out-bulk",
141 static struct ci_drv controller = {
150 * ci_get_qh() - return queue head for endpoint
151 * @ep_num: Endpoint number
152 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
154 * This function returns the QH associated with particular endpoint
155 * and it's direction.
157 static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
159 return &controller.epts[(ep_num * 2) + dir_in];
163 * ci_get_qtd() - return queue item for endpoint
164 * @ep_num: Endpoint number
165 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
167 * This function returns the QH associated with particular endpoint
168 * and it's direction.
170 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
172 int index = (ep_num * 2) + dir_in;
173 uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
174 return (struct ept_queue_item *)imem;
178 * ci_flush_qh - flush cache over queue head
179 * @ep_num: Endpoint number
181 * This function flushes cache over QH for particular endpoint.
183 static void ci_flush_qh(int ep_num)
185 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
186 const unsigned long start = (unsigned long)head;
187 const unsigned long end = start + 2 * sizeof(*head);
189 flush_dcache_range(start, end);
193 * ci_invalidate_qh - invalidate cache over queue head
194 * @ep_num: Endpoint number
196 * This function invalidates cache over QH for particular endpoint.
198 static void ci_invalidate_qh(int ep_num)
200 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
201 unsigned long start = (unsigned long)head;
202 unsigned long end = start + 2 * sizeof(*head);
204 invalidate_dcache_range(start, end);
208 * ci_flush_qtd - flush cache over queue item
209 * @ep_num: Endpoint number
211 * This function flushes cache over qTD pair for particular endpoint.
213 static void ci_flush_qtd(int ep_num)
215 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
216 const unsigned long start = (unsigned long)item;
217 const unsigned long end = start + 2 * ILIST_ENT_SZ;
219 flush_dcache_range(start, end);
223 * ci_flush_td - flush cache over queue item
226 * This function flushes cache for particular transfer descriptor.
228 static void ci_flush_td(struct ept_queue_item *td)
230 const unsigned long start = (unsigned long)td;
231 const unsigned long end = (unsigned long)td + ILIST_ENT_SZ;
232 flush_dcache_range(start, end);
236 * ci_invalidate_qtd - invalidate cache over queue item
237 * @ep_num: Endpoint number
239 * This function invalidates cache over qTD pair for particular endpoint.
241 static void ci_invalidate_qtd(int ep_num)
243 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
244 const unsigned long start = (unsigned long)item;
245 const unsigned long end = start + 2 * ILIST_ENT_SZ;
247 invalidate_dcache_range(start, end);
251 * ci_invalidate_td - invalidate cache over queue item
254 * This function invalidates cache for particular transfer descriptor.
256 static void ci_invalidate_td(struct ept_queue_item *td)
258 const unsigned long start = (unsigned long)td;
259 const unsigned long end = start + ILIST_ENT_SZ;
260 invalidate_dcache_range(start, end);
263 static struct usb_request *
264 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
266 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
268 struct ci_req *ci_req;
271 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
273 if (num == 0 && controller.ep0_req)
274 return &controller.ep0_req->req;
276 ci_req = calloc(1, sizeof(*ci_req));
280 INIT_LIST_HEAD(&ci_req->queue);
283 controller.ep0_req = ci_req;
288 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req)
290 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
291 struct ci_req *ci_req = container_of(req, struct ci_req, req);
295 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
298 if (!controller.ep0_req)
300 controller.ep0_req = 0;
308 static void ep_enable(int num, int in, int maxpacket)
310 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
313 n = readl(&udc->epctrl[num]);
315 n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
317 n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
320 struct ept_queue_head *head = ci_get_qh(num, in);
322 head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
325 writel(n, &udc->epctrl[num]);
328 static int ci_ep_enable(struct usb_ep *ep,
329 const struct usb_endpoint_descriptor *desc)
331 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
333 num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
334 in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
338 int max = get_unaligned_le16(&desc->wMaxPacketSize);
340 if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
342 if (ep->maxpacket != max) {
343 DBG("%s: from %d to %d\n", __func__,
348 ep_enable(num, in, ep->maxpacket);
349 DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
353 static int ci_ep_disable(struct usb_ep *ep)
355 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
361 static int ci_bounce(struct ci_req *ci_req, int in)
363 struct usb_request *req = &ci_req->req;
364 unsigned long addr = (unsigned long)req->buf;
365 unsigned long hwaddr;
366 uint32_t aligned_used_len;
368 /* Input buffer address is not aligned. */
369 if (addr & (ARCH_DMA_MINALIGN - 1))
372 /* Input buffer length is not aligned. */
373 if (req->length & (ARCH_DMA_MINALIGN - 1))
376 /* The buffer is well aligned, only flush cache. */
377 ci_req->hw_len = req->length;
378 ci_req->hw_buf = req->buf;
382 if (ci_req->b_buf && req->length > ci_req->b_len) {
386 if (!ci_req->b_buf) {
387 ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN);
388 ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len);
392 ci_req->hw_len = ci_req->b_len;
393 ci_req->hw_buf = ci_req->b_buf;
396 memcpy(ci_req->hw_buf, req->buf, req->length);
399 hwaddr = (unsigned long)ci_req->hw_buf;
400 aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
401 flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
406 static void ci_debounce(struct ci_req *ci_req, int in)
408 struct usb_request *req = &ci_req->req;
409 unsigned long addr = (unsigned long)req->buf;
410 unsigned long hwaddr = (unsigned long)ci_req->hw_buf;
411 uint32_t aligned_used_len;
416 aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);
417 invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len);
420 return; /* not a bounce */
422 memcpy(req->buf, ci_req->hw_buf, req->actual);
425 static void ci_ep_submit_next_request(struct ci_ep *ci_ep)
427 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
428 struct ept_queue_item *item;
429 struct ept_queue_head *head;
430 int bit, num, len, in;
431 struct ci_req *ci_req;
433 uint32_t len_left, len_this_dtd;
434 struct ept_queue_item *dtd, *qtd;
436 ci_ep->req_primed = true;
438 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
439 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
440 item = ci_get_qtd(num, in);
441 head = ci_get_qh(num, in);
443 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
444 len = ci_req->req.length;
446 head->next = (unsigned long)item;
449 ci_req->dtd_count = 0;
450 buf = ci_req->hw_buf;
455 len_this_dtd = min(len_left, (unsigned)EP_MAX_LENGTH_TRANSFER);
457 dtd->info = INFO_BYTES(len_this_dtd) | INFO_ACTIVE;
458 dtd->page0 = (unsigned long)buf;
459 dtd->page1 = ((unsigned long)buf & 0xfffff000) + 0x1000;
460 dtd->page2 = ((unsigned long)buf & 0xfffff000) + 0x2000;
461 dtd->page3 = ((unsigned long)buf & 0xfffff000) + 0x3000;
462 dtd->page4 = ((unsigned long)buf & 0xfffff000) + 0x4000;
464 len_left -= len_this_dtd;
468 qtd = (struct ept_queue_item *)
469 memalign(ILIST_ALIGN, ILIST_ENT_SZ);
470 dtd->next = (unsigned long)qtd;
472 memset(dtd, 0, ILIST_ENT_SZ);
480 * When sending the data for an IN transaction, the attached host
481 * knows that all data for the IN is sent when one of the following
483 * a) A zero-length packet is transmitted.
484 * b) A packet with length that isn't an exact multiple of the ep's
485 * maxpacket is transmitted.
486 * c) Enough data is sent to exactly fill the host's maximum expected
487 * IN transaction size.
489 * One of these conditions MUST apply at the end of an IN transaction,
490 * or the transaction will not be considered complete by the host. If
491 * none of (a)..(c) already applies, then we must force (a) to apply
492 * by explicitly sending an extra zero-length packet.
495 if (in && len && !(len % ci_ep->ep.maxpacket) && ci_req->req.zero) {
497 * Each endpoint has 2 items allocated, even though typically
498 * only 1 is used at a time since either an IN or an OUT but
499 * not both is queued. For an IN transaction, item currently
500 * points at the second of these items, so we know that we
501 * can use the other to transmit the extra zero-length packet.
503 struct ept_queue_item *other_item = ci_get_qtd(num, 0);
504 item->next = (unsigned long)other_item;
506 item->info = INFO_ACTIVE;
509 item->next = TERMINATE;
510 item->info |= INFO_IOC;
514 item = (struct ept_queue_item *)(unsigned long)head->next;
515 while (item->next != TERMINATE) {
516 ci_flush_td((struct ept_queue_item *)(unsigned long)item->next);
517 item = (struct ept_queue_item *)(unsigned long)item->next;
520 DBG("ept%d %s queue len %x, req %p, buffer %p\n",
521 num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
529 writel(bit, &udc->epprime);
532 static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
534 struct ci_ep *ci_ep = container_of(_ep, struct ci_ep, ep);
535 struct ci_req *ci_req;
537 list_for_each_entry(ci_req, &ci_ep->queue, queue) {
538 if (&ci_req->req == _req)
542 if (&ci_req->req != _req)
545 list_del_init(&ci_req->queue);
547 if (ci_req->req.status == -EINPROGRESS) {
548 ci_req->req.status = -ECONNRESET;
549 if (ci_req->req.complete)
550 ci_req->req.complete(_ep, _req);
556 static int ci_ep_queue(struct usb_ep *ep,
557 struct usb_request *req, gfp_t gfp_flags)
559 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
560 struct ci_req *ci_req = container_of(req, struct ci_req, req);
562 int __maybe_unused num;
564 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
565 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
567 if (!num && ci_ep->req_primed) {
569 * The flipping of ep0 between IN and OUT relies on
570 * ci_ep_queue consuming the current IN/OUT setting
571 * immediately. If this is deferred to a later point when the
572 * req is pulled out of ci_req->queue, then the IN/OUT setting
573 * may have been changed since the req was queued, and state
574 * will get out of sync. This condition doesn't occur today,
575 * but could if bugs were introduced later, and this error
576 * check will save a lot of debugging time.
578 printf("%s: ep0 transaction already in progress\n", __func__);
582 ret = ci_bounce(ci_req, in);
586 DBG("ept%d %s pre-queue req %p, buffer %p\n",
587 num, in ? "in" : "out", ci_req, ci_req->hw_buf);
588 list_add_tail(&ci_req->queue, &ci_ep->queue);
590 if (!ci_ep->req_primed)
591 ci_ep_submit_next_request(ci_ep);
596 static void flip_ep0_direction(void)
598 if (ep0_desc.bEndpointAddress == USB_DIR_IN) {
599 DBG("%s: Flipping ep0 to OUT\n", __func__);
600 ep0_desc.bEndpointAddress = 0;
602 DBG("%s: Flipping ep0 to IN\n", __func__);
603 ep0_desc.bEndpointAddress = USB_DIR_IN;
607 static void handle_ep_complete(struct ci_ep *ci_ep)
609 struct ept_queue_item *item, *next_td;
611 struct ci_req *ci_req;
613 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
614 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
615 item = ci_get_qtd(num, in);
616 ci_invalidate_qtd(num);
617 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
621 for (j = 0; j < ci_req->dtd_count; j++) {
622 ci_invalidate_td(next_td);
624 len += (item->info >> 16) & 0x7fff;
625 if (item->info & 0xff)
626 printf("EP%d/%s FAIL info=%x pg0=%x\n",
627 num, in ? "in" : "out", item->info, item->page0);
628 if (j != ci_req->dtd_count - 1)
629 next_td = (struct ept_queue_item *)(unsigned long)
635 list_del_init(&ci_req->queue);
636 ci_ep->req_primed = false;
638 if (!list_empty(&ci_ep->queue))
639 ci_ep_submit_next_request(ci_ep);
641 ci_req->req.actual = ci_req->req.length - len;
642 ci_debounce(ci_req, in);
644 DBG("ept%d %s req %p, complete %x\n",
645 num, in ? "in" : "out", ci_req, len);
646 if (num != 0 || controller.ep0_data_phase)
647 ci_req->req.complete(&ci_ep->ep, &ci_req->req);
648 if (num == 0 && controller.ep0_data_phase) {
650 * Data Stage is complete, so flip ep0 dir for Status Stage,
651 * which always transfers a packet in the opposite direction.
653 DBG("%s: flip ep0 dir for Status Stage\n", __func__);
654 flip_ep0_direction();
655 controller.ep0_data_phase = false;
656 ci_req->req.length = 0;
657 usb_ep_queue(&ci_ep->ep, &ci_req->req, 0);
661 #define SETUP(type, request) (((type) << 8) | (request))
663 static void handle_setup(void)
665 struct ci_ep *ci_ep = &controller.ep[0];
666 struct ci_req *ci_req;
667 struct usb_request *req;
668 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
669 struct ept_queue_head *head;
670 struct usb_ctrlrequest r;
672 int num, in, _num, _in, i;
675 ci_req = controller.ep0_req;
677 head = ci_get_qh(0, 0); /* EP0 OUT */
680 memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
681 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
682 writel(EPT_RX(0), &udc->epsetupstat);
684 writel(EPT_RX(0), &udc->epstat);
686 DBG("handle setup %s, %x, %x index %x value %x length %x\n",
687 reqname(r.bRequest), r.bRequestType, r.bRequest, r.wIndex,
688 r.wValue, r.wLength);
690 /* Set EP0 dir for Data Stage based on Setup Stage data */
691 if (r.bRequestType & USB_DIR_IN) {
692 DBG("%s: Set ep0 to IN for Data Stage\n", __func__);
693 ep0_desc.bEndpointAddress = USB_DIR_IN;
695 DBG("%s: Set ep0 to OUT for Data Stage\n", __func__);
696 ep0_desc.bEndpointAddress = 0;
699 controller.ep0_data_phase = true;
701 /* 0 length -> no Data Stage. Flip dir for Status Stage */
702 DBG("%s: 0 length: flip ep0 dir for Status Stage\n", __func__);
703 flip_ep0_direction();
704 controller.ep0_data_phase = false;
707 list_del_init(&ci_req->queue);
708 ci_ep->req_primed = false;
710 switch (SETUP(r.bRequestType, r.bRequest)) {
711 case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
712 _num = r.wIndex & 15;
713 _in = !!(r.wIndex & 0x80);
715 if ((r.wValue == 0) && (r.wLength == 0)) {
717 for (i = 0; i < NUM_ENDPOINTS; i++) {
718 struct ci_ep *ep = &controller.ep[i];
722 num = ep->desc->bEndpointAddress
723 & USB_ENDPOINT_NUMBER_MASK;
724 in = (ep->desc->bEndpointAddress
726 if ((num == _num) && (in == _in)) {
727 ep_enable(num, in, ep->ep.maxpacket);
728 usb_ep_queue(controller.gadget.ep0,
736 case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
738 * write address delayed (will take effect
739 * after the next IN txn)
741 writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
743 usb_ep_queue(controller.gadget.ep0, req, 0);
746 case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
748 buf = (char *)req->buf;
749 buf[0] = 1 << USB_DEVICE_SELF_POWERED;
751 usb_ep_queue(controller.gadget.ep0, req, 0);
754 /* pass request up to the gadget driver */
755 if (controller.driver)
756 status = controller.driver->setup(&controller.gadget, &r);
762 DBG("STALL reqname %s type %x value %x, index %x\n",
763 reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
764 writel((1<<16) | (1 << 0), &udc->epctrl[0]);
767 static void stop_activity(void)
770 struct ept_queue_head *head;
771 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
772 writel(readl(&udc->epcomp), &udc->epcomp);
773 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
774 writel(readl(&udc->epsetupstat), &udc->epsetupstat);
776 writel(readl(&udc->epstat), &udc->epstat);
777 writel(0xffffffff, &udc->epflush);
779 /* error out any pending reqs */
780 for (i = 0; i < NUM_ENDPOINTS; i++) {
782 writel(0, &udc->epctrl[i]);
783 if (controller.ep[i].desc) {
784 num = controller.ep[i].desc->bEndpointAddress
785 & USB_ENDPOINT_NUMBER_MASK;
786 in = (controller.ep[i].desc->bEndpointAddress
788 head = ci_get_qh(num, in);
789 head->info = INFO_ACTIVE;
797 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
798 unsigned n = readl(&udc->usbsts);
799 writel(n, &udc->usbsts);
802 n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
807 DBG("-- reset --\n");
811 DBG("-- suspend --\n");
815 int speed = USB_SPEED_FULL;
817 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
818 bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
820 bit = (readl(&udc->portsc) >> 26) & 3;
822 DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
824 speed = USB_SPEED_HIGH;
827 controller.gadget.speed = speed;
828 for (i = 1; i < NUM_ENDPOINTS; i++) {
829 if (controller.ep[i].ep.maxpacket > max)
830 controller.ep[i].ep.maxpacket = max;
835 printf("<UEI %x>\n", readl(&udc->epcomp));
837 if ((n & STS_UI) || (n & STS_UEI)) {
838 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
839 n = readl(&udc->epsetupstat);
841 n = readl(&udc->epstat);
846 n = readl(&udc->epcomp);
848 writel(n, &udc->epcomp);
850 for (i = 0; i < NUM_ENDPOINTS && n; i++) {
851 if (controller.ep[i].desc) {
852 num = controller.ep[i].desc->bEndpointAddress
853 & USB_ENDPOINT_NUMBER_MASK;
854 in = (controller.ep[i].desc->bEndpointAddress
856 bit = (in) ? EPT_TX(num) : EPT_RX(num);
858 handle_ep_complete(&controller.ep[i]);
864 int usb_gadget_handle_interrupts(int index)
867 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
869 value = readl(&udc->usbsts);
876 void udc_disconnect(void)
878 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
881 writel(USBCMD_FS2, &udc->usbcmd);
883 if (controller.driver)
884 controller.driver->disconnect(&controller.gadget);
887 static int ci_pullup(struct usb_gadget *gadget, int is_on)
889 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
892 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
895 ci_init_after_reset(controller.ctrl);
897 writel((unsigned long)controller.epts, &udc->epinitaddr);
899 /* select DEVICE mode */
900 writel(USBMODE_DEVICE, &udc->usbmode);
902 #if !defined(CONFIG_USB_GADGET_DUALSPEED)
903 /* Port force Full-Speed Connect */
904 setbits_le32(&udc->portsc, PFSC);
907 writel(0xffffffff, &udc->epflush);
909 /* Turn on the USB connection by enabling the pullup resistor */
910 setbits_le32(&udc->usbcmd, USBCMD_ITC(MICRO_8FRAME) |
919 static int ci_udc_probe(void)
921 struct ept_queue_head *head;
924 const int num = 2 * NUM_ENDPOINTS;
926 const int eplist_min_align = 4096;
927 const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN);
928 const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
929 const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
931 /* The QH list must be aligned to 4096 bytes. */
932 controller.epts = memalign(eplist_align, eplist_sz);
933 if (!controller.epts)
935 memset(controller.epts, 0, eplist_sz);
937 controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ);
938 if (!controller.items_mem) {
939 free(controller.epts);
942 memset(controller.items_mem, 0, ILIST_SZ);
944 for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
946 * Configure QH for each endpoint. The structure of the QH list
947 * is such that each two subsequent fields, N and N+1 where N is
948 * even, in the QH list represent QH for one endpoint. The Nth
949 * entry represents OUT configuration and the N+1th entry does
950 * represent IN configuration of the endpoint.
952 head = controller.epts + i;
954 head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
955 | CONFIG_ZLT | CONFIG_IOS;
957 head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
959 head->next = TERMINATE;
968 INIT_LIST_HEAD(&controller.gadget.ep_list);
971 memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init));
972 controller.ep[0].desc = &ep0_desc;
973 INIT_LIST_HEAD(&controller.ep[0].queue);
974 controller.ep[0].req_primed = false;
975 controller.gadget.ep0 = &controller.ep[0].ep;
976 INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
979 for (i = 1; i < 4; i++) {
980 memcpy(&controller.ep[i].ep, &ci_ep_init[i],
981 sizeof(*ci_ep_init));
982 INIT_LIST_HEAD(&controller.ep[i].queue);
983 controller.ep[i].req_primed = false;
984 list_add_tail(&controller.ep[i].ep.ep_list,
985 &controller.gadget.ep_list);
989 for (i = 4; i < NUM_ENDPOINTS; i++) {
990 memcpy(&controller.ep[i].ep, &ci_ep_init[4],
991 sizeof(*ci_ep_init));
992 INIT_LIST_HEAD(&controller.ep[i].queue);
993 controller.ep[i].req_primed = false;
994 list_add_tail(&controller.ep[i].ep.ep_list,
995 &controller.gadget.ep_list);
998 ci_ep_alloc_request(&controller.ep[0].ep, 0);
999 if (!controller.ep0_req) {
1000 free(controller.items_mem);
1001 free(controller.epts);
1008 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1014 if (!driver->bind || !driver->setup || !driver->disconnect)
1016 if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
1019 #if CONFIG_IS_ENABLED(DM_USB)
1020 ret = usb_setup_ehci_gadget(&controller.ctrl);
1022 ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
1027 ret = ci_udc_probe();
1029 DBG("udc probe failed, returned %d\n", ret);
1033 ret = driver->bind(&controller.gadget);
1035 DBG("driver->bind() returned %d\n", ret);
1038 controller.driver = driver;
1043 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1047 driver->unbind(&controller.gadget);
1048 controller.driver = NULL;
1050 ci_ep_free_request(&controller.ep[0].ep, &controller.ep0_req->req);
1051 free(controller.items_mem);
1052 free(controller.epts);
1057 bool dfu_usb_get_reset(void)
1059 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
1061 return !!(readl(&udc->usbsts) & STS_URI);