2 * Copyright (c) 2007-2008, Juniper Networks, Inc.
3 * Copyright (c) 2008, Excito Elektronik i Skåne AB
4 * Copyright (c) 2008, Michael Trimarchi <trimarchimichael@yahoo.it>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation version 2 of
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <asm/byteorder.h>
26 #include <asm/unaligned.h>
31 #include <linux/compiler.h>
35 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
36 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
40 * EHCI spec page 20 says that the HC may take up to 16 uFrames (= 4ms) to halt.
41 * Let's time out after 8 to have a little safety margin on top of that.
43 #define HCHALT_TIMEOUT (8 * 1000)
45 static struct ehci_ctrl ehcic[CONFIG_USB_MAX_CONTROLLER_COUNT];
47 #define ALIGN_END_ADDR(type, ptr, size) \
48 ((unsigned long)(ptr) + roundup((size) * sizeof(type), USB_DMA_MINALIGN))
50 static struct descriptor {
51 struct usb_hub_descriptor hub;
52 struct usb_device_descriptor device;
53 struct usb_linux_config_descriptor config;
54 struct usb_linux_interface_descriptor interface;
55 struct usb_endpoint_descriptor endpoint;
56 } __attribute__ ((packed)) descriptor = {
58 0x8, /* bDescLength */
59 0x29, /* bDescriptorType: hub descriptor */
60 2, /* bNrPorts -- runtime modified */
61 0, /* wHubCharacteristics */
62 10, /* bPwrOn2PwrGood */
63 0, /* bHubCntrCurrent */
64 {}, /* Device removable */
65 {} /* at most 7 ports! XXX */
69 1, /* bDescriptorType: UDESC_DEVICE */
70 cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
71 9, /* bDeviceClass: UDCLASS_HUB */
72 0, /* bDeviceSubClass: UDSUBCLASS_HUB */
73 1, /* bDeviceProtocol: UDPROTO_HSHUBSTT */
74 64, /* bMaxPacketSize: 64 bytes */
75 0x0000, /* idVendor */
76 0x0000, /* idProduct */
77 cpu_to_le16(0x0100), /* bcdDevice */
78 1, /* iManufacturer */
80 0, /* iSerialNumber */
81 1 /* bNumConfigurations: 1 */
85 2, /* bDescriptorType: UDESC_CONFIG */
87 1, /* bNumInterface */
88 1, /* bConfigurationValue */
89 0, /* iConfiguration */
90 0x40, /* bmAttributes: UC_SELF_POWER */
95 4, /* bDescriptorType: UDESC_INTERFACE */
96 0, /* bInterfaceNumber */
97 0, /* bAlternateSetting */
98 1, /* bNumEndpoints */
99 9, /* bInterfaceClass: UICLASS_HUB */
100 0, /* bInterfaceSubClass: UISUBCLASS_HUB */
101 0, /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
106 5, /* bDescriptorType: UDESC_ENDPOINT */
107 0x81, /* bEndpointAddress:
108 * UE_DIR_IN | EHCI_INTR_ENDPT
110 3, /* bmAttributes: UE_INTERRUPT */
111 8, /* wMaxPacketSize */
116 #if defined(CONFIG_EHCI_IS_TDI)
117 #define ehci_is_TDI() (1)
119 #define ehci_is_TDI() (0)
122 static struct ehci_ctrl *ehci_get_ctrl(struct usb_device *udev)
124 return udev->controller;
127 static int ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
129 return PORTSC_PSPD(reg);
132 static void ehci_set_usbmode(struct ehci_ctrl *ctrl)
137 reg_ptr = (uint32_t *)((u8 *)&ctrl->hcor->or_usbcmd + USBMODE);
138 tmp = ehci_readl(reg_ptr);
139 tmp |= USBMODE_CM_HC;
140 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
143 ehci_writel(reg_ptr, tmp);
146 static void ehci_powerup_fixup(struct ehci_ctrl *ctrl, uint32_t *status_reg,
152 static uint32_t *ehci_get_portsc_register(struct ehci_ctrl *ctrl, int port)
154 if (port < 0 || port >= CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
155 /* Printing the message would cause a scan failure! */
156 debug("The request port(%u) is not configured\n", port);
160 return (uint32_t *)&ctrl->hcor->or_portsc[port];
163 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
167 result = ehci_readl(ptr);
169 if (result == ~(uint32_t)0)
179 static int ehci_reset(struct ehci_ctrl *ctrl)
184 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
185 cmd = (cmd & ~CMD_RUN) | CMD_RESET;
186 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
187 ret = handshake((uint32_t *)&ctrl->hcor->or_usbcmd,
188 CMD_RESET, 0, 250 * 1000);
190 printf("EHCI fail to reset\n");
195 ctrl->ops.set_usb_mode(ctrl);
197 #ifdef CONFIG_USB_EHCI_TXFIFO_THRESH
198 cmd = ehci_readl(&ctrl->hcor->or_txfilltuning);
199 cmd &= ~TXFIFO_THRESH_MASK;
200 cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH);
201 ehci_writel(&ctrl->hcor->or_txfilltuning, cmd);
207 static int ehci_shutdown(struct ehci_ctrl *ctrl)
212 if (!ctrl || !ctrl->hcor)
215 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
216 cmd &= ~(CMD_PSE | CMD_ASE);
217 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
218 ret = handshake(&ctrl->hcor->or_usbsts, STS_ASS | STS_PSS, 0,
222 for (i = 0; i < CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS; i++) {
223 reg = ehci_readl(&ctrl->hcor->or_portsc[i]);
225 ehci_writel(&ctrl->hcor->or_portsc[i], reg);
229 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
230 ret = handshake(&ctrl->hcor->or_usbsts, STS_HALT, STS_HALT,
235 puts("EHCI failed to shut down host controller.\n");
240 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
242 uint32_t delta, next;
243 uint32_t addr = (unsigned long)buf;
246 if (addr != ALIGN(addr, ARCH_DMA_MINALIGN))
247 debug("EHCI-HCD: Misaligned buffer address (%p)\n", buf);
249 flush_dcache_range(addr, ALIGN(addr + sz, ARCH_DMA_MINALIGN));
252 while (idx < QT_BUFFER_CNT) {
253 td->qt_buffer[idx] = cpu_to_hc32(addr);
254 td->qt_buffer_hi[idx] = 0;
255 next = (addr + EHCI_PAGE_SIZE) & ~(EHCI_PAGE_SIZE - 1);
264 if (idx == QT_BUFFER_CNT) {
265 printf("out of buffer pointers (%zu bytes left)\n", sz);
272 static inline u8 ehci_encode_speed(enum usb_device_speed speed)
274 #define QH_HIGH_SPEED 2
275 #define QH_FULL_SPEED 0
276 #define QH_LOW_SPEED 1
277 if (speed == USB_SPEED_HIGH)
278 return QH_HIGH_SPEED;
279 if (speed == USB_SPEED_LOW)
281 return QH_FULL_SPEED;
284 static void ehci_update_endpt2_dev_n_port(struct usb_device *dev,
287 struct usb_device *ttdev;
289 if (dev->speed != USB_SPEED_LOW && dev->speed != USB_SPEED_FULL)
293 * For full / low speed devices we need to get the devnum and portnr of
294 * the tt, so of the first upstream usb-2 hub, there may be usb-1 hubs
295 * in the tree before that one!
298 while (ttdev->parent && ttdev->parent->speed != USB_SPEED_HIGH)
299 ttdev = ttdev->parent;
303 qh->qh_endpt2 |= cpu_to_hc32(QH_ENDPT2_PORTNUM(ttdev->portnr) |
304 QH_ENDPT2_HUBADDR(ttdev->parent->devnum));
308 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
309 int length, struct devrequest *req)
311 ALLOC_ALIGN_BUFFER(struct QH, qh, 1, USB_DMA_MINALIGN);
315 volatile struct qTD *vtd;
318 uint32_t endpt, maxpacket, token, usbsts;
323 struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
325 debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
326 buffer, length, req);
328 debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
329 req->request, req->request,
330 req->requesttype, req->requesttype,
331 le16_to_cpu(req->value), le16_to_cpu(req->value),
332 le16_to_cpu(req->index));
334 #define PKT_ALIGN 512
336 * The USB transfer is split into qTD transfers. Eeach qTD transfer is
337 * described by a transfer descriptor (the qTD). The qTDs form a linked
338 * list with a queue head (QH).
340 * Each qTD transfer starts with a new USB packet, i.e. a packet cannot
341 * have its beginning in a qTD transfer and its end in the following
342 * one, so the qTD transfer lengths have to be chosen accordingly.
344 * Each qTD transfer uses up to QT_BUFFER_CNT data buffers, mapped to
345 * single pages. The first data buffer can start at any offset within a
346 * page (not considering the cache-line alignment issues), while the
347 * following buffers must be page-aligned. There is no alignment
348 * constraint on the size of a qTD transfer.
351 /* 1 qTD will be needed for SETUP, and 1 for ACK. */
353 if (length > 0 || req == NULL) {
355 * Determine the qTD transfer size that will be used for the
356 * data payload (not considering the first qTD transfer, which
357 * may be longer or shorter, and the final one, which may be
360 * In order to keep each packet within a qTD transfer, the qTD
361 * transfer size is aligned to PKT_ALIGN, which is a multiple of
362 * wMaxPacketSize (except in some cases for interrupt transfers,
363 * see comment in submit_int_msg()).
365 * By default, i.e. if the input buffer is aligned to PKT_ALIGN,
366 * QT_BUFFER_CNT full pages will be used.
368 int xfr_sz = QT_BUFFER_CNT;
370 * However, if the input buffer is not aligned to PKT_ALIGN, the
371 * qTD transfer size will be one page shorter, and the first qTD
372 * data buffer of each transfer will be page-unaligned.
374 if ((unsigned long)buffer & (PKT_ALIGN - 1))
376 /* Convert the qTD transfer size to bytes. */
377 xfr_sz *= EHCI_PAGE_SIZE;
379 * Approximate by excess the number of qTDs that will be
380 * required for the data payload. The exact formula is way more
381 * complicated and saves at most 2 qTDs, i.e. a total of 128
384 qtd_count += 2 + length / xfr_sz;
387 * Threshold value based on the worst-case total size of the allocated qTDs for
388 * a mass-storage transfer of 65535 blocks of 512 bytes.
390 #if CONFIG_SYS_MALLOC_LEN <= 64 + 128 * 1024
391 #warning CONFIG_SYS_MALLOC_LEN may be too small for EHCI
393 qtd = memalign(USB_DMA_MINALIGN, qtd_count * sizeof(struct qTD));
395 printf("unable to allocate TDs\n");
399 memset(qh, 0, sizeof(struct QH));
400 memset(qtd, 0, qtd_count * sizeof(*qtd));
402 toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
405 * Setup QH (3.6 in ehci-r10.pdf)
407 * qh_link ................. 03-00 H
408 * qh_endpt1 ............... 07-04 H
409 * qh_endpt2 ............... 0B-08 H
411 * qh_overlay.qt_next ...... 13-10 H
412 * - qh_overlay.qt_altnext
414 qh->qh_link = cpu_to_hc32((unsigned long)&ctrl->qh_list | QH_LINK_TYPE_QH);
415 c = (dev->speed != USB_SPEED_HIGH) && !usb_pipeendpoint(pipe);
416 maxpacket = usb_maxpacket(dev, pipe);
417 endpt = QH_ENDPT1_RL(8) | QH_ENDPT1_C(c) |
418 QH_ENDPT1_MAXPKTLEN(maxpacket) | QH_ENDPT1_H(0) |
419 QH_ENDPT1_DTC(QH_ENDPT1_DTC_DT_FROM_QTD) |
420 QH_ENDPT1_EPS(ehci_encode_speed(dev->speed)) |
421 QH_ENDPT1_ENDPT(usb_pipeendpoint(pipe)) | QH_ENDPT1_I(0) |
422 QH_ENDPT1_DEVADDR(usb_pipedevice(pipe));
423 qh->qh_endpt1 = cpu_to_hc32(endpt);
424 endpt = QH_ENDPT2_MULT(1) | QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(0);
425 qh->qh_endpt2 = cpu_to_hc32(endpt);
426 ehci_update_endpt2_dev_n_port(dev, qh);
427 qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
428 qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
430 tdp = &qh->qh_overlay.qt_next;
434 * Setup request qTD (3.5 in ehci-r10.pdf)
436 * qt_next ................ 03-00 H
437 * qt_altnext ............. 07-04 H
438 * qt_token ............... 0B-08 H
440 * [ buffer, buffer_hi ] loaded with "req".
442 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
443 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
444 token = QT_TOKEN_DT(0) | QT_TOKEN_TOTALBYTES(sizeof(*req)) |
445 QT_TOKEN_IOC(0) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) |
446 QT_TOKEN_PID(QT_TOKEN_PID_SETUP) |
447 QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
448 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
449 if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req))) {
450 printf("unable to construct SETUP TD\n");
453 /* Update previous qTD! */
454 *tdp = cpu_to_hc32((unsigned long)&qtd[qtd_counter]);
455 tdp = &qtd[qtd_counter++].qt_next;
459 if (length > 0 || req == NULL) {
460 uint8_t *buf_ptr = buffer;
461 int left_length = length;
465 * Determine the size of this qTD transfer. By default,
466 * QT_BUFFER_CNT full pages can be used.
468 int xfr_bytes = QT_BUFFER_CNT * EHCI_PAGE_SIZE;
470 * However, if the input buffer is not page-aligned, the
471 * portion of the first page before the buffer start
472 * offset within that page is unusable.
474 xfr_bytes -= (unsigned long)buf_ptr & (EHCI_PAGE_SIZE - 1);
476 * In order to keep each packet within a qTD transfer,
477 * align the qTD transfer size to PKT_ALIGN.
479 xfr_bytes &= ~(PKT_ALIGN - 1);
481 * This transfer may be shorter than the available qTD
482 * transfer size that has just been computed.
484 xfr_bytes = min(xfr_bytes, left_length);
487 * Setup request qTD (3.5 in ehci-r10.pdf)
489 * qt_next ................ 03-00 H
490 * qt_altnext ............. 07-04 H
491 * qt_token ............... 0B-08 H
493 * [ buffer, buffer_hi ] loaded with "buffer".
495 qtd[qtd_counter].qt_next =
496 cpu_to_hc32(QT_NEXT_TERMINATE);
497 qtd[qtd_counter].qt_altnext =
498 cpu_to_hc32(QT_NEXT_TERMINATE);
499 token = QT_TOKEN_DT(toggle) |
500 QT_TOKEN_TOTALBYTES(xfr_bytes) |
501 QT_TOKEN_IOC(req == NULL) | QT_TOKEN_CPAGE(0) |
503 QT_TOKEN_PID(usb_pipein(pipe) ?
504 QT_TOKEN_PID_IN : QT_TOKEN_PID_OUT) |
505 QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
506 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
507 if (ehci_td_buffer(&qtd[qtd_counter], buf_ptr,
509 printf("unable to construct DATA TD\n");
512 /* Update previous qTD! */
513 *tdp = cpu_to_hc32((unsigned long)&qtd[qtd_counter]);
514 tdp = &qtd[qtd_counter++].qt_next;
516 * Data toggle has to be adjusted since the qTD transfer
517 * size is not always an even multiple of
520 if ((xfr_bytes / maxpacket) & 1)
522 buf_ptr += xfr_bytes;
523 left_length -= xfr_bytes;
524 } while (left_length > 0);
529 * Setup request qTD (3.5 in ehci-r10.pdf)
531 * qt_next ................ 03-00 H
532 * qt_altnext ............. 07-04 H
533 * qt_token ............... 0B-08 H
535 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
536 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
537 token = QT_TOKEN_DT(1) | QT_TOKEN_TOTALBYTES(0) |
538 QT_TOKEN_IOC(1) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) |
539 QT_TOKEN_PID(usb_pipein(pipe) ?
540 QT_TOKEN_PID_OUT : QT_TOKEN_PID_IN) |
541 QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
542 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
543 /* Update previous qTD! */
544 *tdp = cpu_to_hc32((unsigned long)&qtd[qtd_counter]);
545 tdp = &qtd[qtd_counter++].qt_next;
548 ctrl->qh_list.qh_link = cpu_to_hc32((unsigned long)qh | QH_LINK_TYPE_QH);
551 flush_dcache_range((unsigned long)&ctrl->qh_list,
552 ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1));
553 flush_dcache_range((unsigned long)qh, ALIGN_END_ADDR(struct QH, qh, 1));
554 flush_dcache_range((unsigned long)qtd,
555 ALIGN_END_ADDR(struct qTD, qtd, qtd_count));
557 /* Set async. queue head pointer. */
558 ehci_writel(&ctrl->hcor->or_asynclistaddr, (unsigned long)&ctrl->qh_list);
560 usbsts = ehci_readl(&ctrl->hcor->or_usbsts);
561 ehci_writel(&ctrl->hcor->or_usbsts, (usbsts & 0x3f));
563 /* Enable async. schedule. */
564 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
566 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
568 ret = handshake((uint32_t *)&ctrl->hcor->or_usbsts, STS_ASS, STS_ASS,
571 printf("EHCI fail timeout STS_ASS set\n");
575 /* Wait for TDs to be processed. */
577 vtd = &qtd[qtd_counter - 1];
578 timeout = USB_TIMEOUT_MS(pipe);
580 /* Invalidate dcache */
581 invalidate_dcache_range((unsigned long)&ctrl->qh_list,
582 ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1));
583 invalidate_dcache_range((unsigned long)qh,
584 ALIGN_END_ADDR(struct QH, qh, 1));
585 invalidate_dcache_range((unsigned long)qtd,
586 ALIGN_END_ADDR(struct qTD, qtd, qtd_count));
588 token = hc32_to_cpu(vtd->qt_token);
589 if (!(QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE))
592 } while (get_timer(ts) < timeout);
595 * Invalidate the memory area occupied by buffer
596 * Don't try to fix the buffer alignment, if it isn't properly
597 * aligned it's upper layer's fault so let invalidate_dcache_range()
598 * vow about it. But we have to fix the length as it's actual
599 * transfer length and can be unaligned. This is potentially
600 * dangerous operation, it's responsibility of the calling
601 * code to make sure enough space is reserved.
603 invalidate_dcache_range((unsigned long)buffer,
604 ALIGN((unsigned long)buffer + length, ARCH_DMA_MINALIGN));
606 /* Check that the TD processing happened */
607 if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE)
608 printf("EHCI timed out on TD - token=%#x\n", token);
610 /* Disable async schedule. */
611 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
613 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
615 ret = handshake((uint32_t *)&ctrl->hcor->or_usbsts, STS_ASS, 0,
618 printf("EHCI fail timeout STS_ASS reset\n");
622 token = hc32_to_cpu(qh->qh_overlay.qt_token);
623 if (!(QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE)) {
624 debug("TOKEN=%#x\n", token);
625 switch (QT_TOKEN_GET_STATUS(token) &
626 ~(QT_TOKEN_STATUS_SPLITXSTATE | QT_TOKEN_STATUS_PERR)) {
628 toggle = QT_TOKEN_GET_DT(token);
629 usb_settoggle(dev, usb_pipeendpoint(pipe),
630 usb_pipeout(pipe), toggle);
633 case QT_TOKEN_STATUS_HALTED:
634 dev->status = USB_ST_STALLED;
636 case QT_TOKEN_STATUS_ACTIVE | QT_TOKEN_STATUS_DATBUFERR:
637 case QT_TOKEN_STATUS_DATBUFERR:
638 dev->status = USB_ST_BUF_ERR;
640 case QT_TOKEN_STATUS_HALTED | QT_TOKEN_STATUS_BABBLEDET:
641 case QT_TOKEN_STATUS_BABBLEDET:
642 dev->status = USB_ST_BABBLE_DET;
645 dev->status = USB_ST_CRC_ERR;
646 if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_HALTED)
647 dev->status |= USB_ST_STALLED;
650 dev->act_len = length - QT_TOKEN_GET_TOTALBYTES(token);
653 #ifndef CONFIG_USB_EHCI_FARADAY
654 debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
655 dev->devnum, ehci_readl(&ctrl->hcor->or_usbsts),
656 ehci_readl(&ctrl->hcor->or_portsc[0]),
657 ehci_readl(&ctrl->hcor->or_portsc[1]));
662 return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
669 static int ehci_submit_root(struct usb_device *dev, unsigned long pipe,
670 void *buffer, int length, struct devrequest *req)
677 uint32_t *status_reg;
678 int port = le16_to_cpu(req->index) & 0xff;
679 struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
683 debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
684 req->request, req->request,
685 req->requesttype, req->requesttype,
686 le16_to_cpu(req->value), le16_to_cpu(req->index));
688 typeReq = req->request | req->requesttype << 8;
691 case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
692 case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
693 case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
694 status_reg = ctrl->ops.get_portsc_register(ctrl, port - 1);
704 case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
705 switch (le16_to_cpu(req->value) >> 8) {
707 debug("USB_DT_DEVICE request\n");
708 srcptr = &descriptor.device;
709 srclen = descriptor.device.bLength;
712 debug("USB_DT_CONFIG config\n");
713 srcptr = &descriptor.config;
714 srclen = descriptor.config.bLength +
715 descriptor.interface.bLength +
716 descriptor.endpoint.bLength;
719 debug("USB_DT_STRING config\n");
720 switch (le16_to_cpu(req->value) & 0xff) {
721 case 0: /* Language */
726 srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
729 case 2: /* Product */
730 srcptr = "\52\3E\0H\0C\0I\0 "
732 "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
736 debug("unknown value DT_STRING %x\n",
737 le16_to_cpu(req->value));
742 debug("unknown value %x\n", le16_to_cpu(req->value));
746 case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
747 switch (le16_to_cpu(req->value) >> 8) {
749 debug("USB_DT_HUB config\n");
750 srcptr = &descriptor.hub;
751 srclen = descriptor.hub.bLength;
754 debug("unknown value %x\n", le16_to_cpu(req->value));
758 case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
759 debug("USB_REQ_SET_ADDRESS\n");
760 ctrl->rootdev = le16_to_cpu(req->value);
762 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
763 debug("USB_REQ_SET_CONFIGURATION\n");
766 case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
767 tmpbuf[0] = 1; /* USB_STATUS_SELFPOWERED */
772 case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
773 memset(tmpbuf, 0, 4);
774 reg = ehci_readl(status_reg);
775 if (reg & EHCI_PS_CS)
776 tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
777 if (reg & EHCI_PS_PE)
778 tmpbuf[0] |= USB_PORT_STAT_ENABLE;
779 if (reg & EHCI_PS_SUSP)
780 tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
781 if (reg & EHCI_PS_OCA)
782 tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
783 if (reg & EHCI_PS_PR)
784 tmpbuf[0] |= USB_PORT_STAT_RESET;
785 if (reg & EHCI_PS_PP)
786 tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
789 switch (ctrl->ops.get_port_speed(ctrl, reg)) {
793 tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
797 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
801 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
804 if (reg & EHCI_PS_CSC)
805 tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
806 if (reg & EHCI_PS_PEC)
807 tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
808 if (reg & EHCI_PS_OCC)
809 tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
810 if (ctrl->portreset & (1 << port))
811 tmpbuf[2] |= USB_PORT_STAT_C_RESET;
816 case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
817 reg = ehci_readl(status_reg);
818 reg &= ~EHCI_PS_CLEAR;
819 switch (le16_to_cpu(req->value)) {
820 case USB_PORT_FEAT_ENABLE:
822 ehci_writel(status_reg, reg);
824 case USB_PORT_FEAT_POWER:
825 if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams))) {
827 ehci_writel(status_reg, reg);
830 case USB_PORT_FEAT_RESET:
831 if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
833 EHCI_PS_IS_LOWSPEED(reg)) {
834 /* Low speed device, give up ownership. */
835 debug("port %d low speed --> companion\n",
838 ehci_writel(status_reg, reg);
845 ehci_writel(status_reg, reg);
847 * caller must wait, then call GetPortStatus
848 * usb 2.0 specification say 50 ms resets on
851 ctrl->ops.powerup_fixup(ctrl, status_reg, ®);
853 ehci_writel(status_reg, reg & ~EHCI_PS_PR);
855 * A host controller must terminate the reset
856 * and stabilize the state of the port within
859 ret = handshake(status_reg, EHCI_PS_PR, 0,
862 ctrl->portreset |= 1 << port;
864 printf("port(%d) reset error\n",
868 case USB_PORT_FEAT_TEST:
871 reg |= ((le16_to_cpu(req->index) >> 8) & 0xf) << 16;
872 ehci_writel(status_reg, reg);
875 debug("unknown feature %x\n", le16_to_cpu(req->value));
878 /* unblock posted writes */
879 (void) ehci_readl(&ctrl->hcor->or_usbcmd);
881 case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
882 reg = ehci_readl(status_reg);
883 reg &= ~EHCI_PS_CLEAR;
884 switch (le16_to_cpu(req->value)) {
885 case USB_PORT_FEAT_ENABLE:
888 case USB_PORT_FEAT_C_ENABLE:
891 case USB_PORT_FEAT_POWER:
892 if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams)))
895 case USB_PORT_FEAT_C_CONNECTION:
898 case USB_PORT_FEAT_OVER_CURRENT:
901 case USB_PORT_FEAT_C_RESET:
902 ctrl->portreset &= ~(1 << port);
905 debug("unknown feature %x\n", le16_to_cpu(req->value));
908 ehci_writel(status_reg, reg);
909 /* unblock posted write */
910 (void) ehci_readl(&ctrl->hcor->or_usbcmd);
913 debug("Unknown request\n");
918 len = min3(srclen, (int)le16_to_cpu(req->length), length);
919 if (srcptr != NULL && len > 0)
920 memcpy(buffer, srcptr, len);
929 debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
930 req->requesttype, req->request, le16_to_cpu(req->value),
931 le16_to_cpu(req->index), le16_to_cpu(req->length));
934 dev->status = USB_ST_STALLED;
938 const struct ehci_ops default_ehci_ops = {
939 .set_usb_mode = ehci_set_usbmode,
940 .get_port_speed = ehci_get_port_speed,
941 .powerup_fixup = ehci_powerup_fixup,
942 .get_portsc_register = ehci_get_portsc_register,
945 static void ehci_setup_ops(struct ehci_ctrl *ctrl, const struct ehci_ops *ops)
948 ctrl->ops = default_ehci_ops;
951 if (!ctrl->ops.set_usb_mode)
952 ctrl->ops.set_usb_mode = ehci_set_usbmode;
953 if (!ctrl->ops.get_port_speed)
954 ctrl->ops.get_port_speed = ehci_get_port_speed;
955 if (!ctrl->ops.powerup_fixup)
956 ctrl->ops.powerup_fixup = ehci_powerup_fixup;
957 if (!ctrl->ops.get_portsc_register)
958 ctrl->ops.get_portsc_register =
959 ehci_get_portsc_register;
963 void ehci_set_controller_priv(int index, void *priv, const struct ehci_ops *ops)
965 struct ehci_ctrl *ctrl = &ehcic[index];
968 ehci_setup_ops(ctrl, ops);
971 void *ehci_get_controller_priv(int index)
973 return ehcic[index].priv;
976 static int ehci_common_init(struct ehci_ctrl *ctrl, uint tweaks)
984 /* Set the high address word (aka segment) for 64-bit controller */
985 if (ehci_readl(&ctrl->hccr->cr_hccparams) & 1)
986 ehci_writel(&ctrl->hcor->or_ctrldssegment, 0);
988 qh_list = &ctrl->qh_list;
990 /* Set head of reclaim list */
991 memset(qh_list, 0, sizeof(*qh_list));
992 qh_list->qh_link = cpu_to_hc32((unsigned long)qh_list | QH_LINK_TYPE_QH);
993 qh_list->qh_endpt1 = cpu_to_hc32(QH_ENDPT1_H(1) |
994 QH_ENDPT1_EPS(USB_SPEED_HIGH));
995 qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
996 qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
997 qh_list->qh_overlay.qt_token =
998 cpu_to_hc32(QT_TOKEN_STATUS(QT_TOKEN_STATUS_HALTED));
1000 flush_dcache_range((unsigned long)qh_list,
1001 ALIGN_END_ADDR(struct QH, qh_list, 1));
1003 /* Set async. queue head pointer. */
1004 ehci_writel(&ctrl->hcor->or_asynclistaddr, (unsigned long)qh_list);
1007 * Set up periodic list
1008 * Step 1: Parent QH for all periodic transfers.
1010 ctrl->periodic_schedules = 0;
1011 periodic = &ctrl->periodic_queue;
1012 memset(periodic, 0, sizeof(*periodic));
1013 periodic->qh_link = cpu_to_hc32(QH_LINK_TERMINATE);
1014 periodic->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
1015 periodic->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1017 flush_dcache_range((unsigned long)periodic,
1018 ALIGN_END_ADDR(struct QH, periodic, 1));
1021 * Step 2: Setup frame-list: Every microframe, USB tries the same list.
1022 * In particular, device specifications on polling frequency
1023 * are disregarded. Keyboards seem to send NAK/NYet reliably
1024 * when polled with an empty buffer.
1026 * Split Transactions will be spread across microframes using
1027 * S-mask and C-mask.
1029 if (ctrl->periodic_list == NULL)
1030 ctrl->periodic_list = memalign(4096, 1024 * 4);
1032 if (!ctrl->periodic_list)
1034 for (i = 0; i < 1024; i++) {
1035 ctrl->periodic_list[i] = cpu_to_hc32((unsigned long)periodic
1039 flush_dcache_range((unsigned long)ctrl->periodic_list,
1040 ALIGN_END_ADDR(uint32_t, ctrl->periodic_list,
1043 /* Set periodic list base address */
1044 ehci_writel(&ctrl->hcor->or_periodiclistbase,
1045 (unsigned long)ctrl->periodic_list);
1047 reg = ehci_readl(&ctrl->hccr->cr_hcsparams);
1048 descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
1049 debug("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
1050 /* Port Indicators */
1051 if (HCS_INDICATOR(reg))
1052 put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics)
1053 | 0x80, &descriptor.hub.wHubCharacteristics);
1054 /* Port Power Control */
1056 put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics)
1057 | 0x01, &descriptor.hub.wHubCharacteristics);
1059 /* Start the host controller. */
1060 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
1062 * Philips, Intel, and maybe others need CMD_RUN before the
1063 * root hub will detect new devices (why?); NEC doesn't
1065 cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
1067 ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
1069 if (!(tweaks & EHCI_TWEAK_NO_INIT_CF)) {
1070 /* take control over the ports */
1071 cmd = ehci_readl(&ctrl->hcor->or_configflag);
1073 ehci_writel(&ctrl->hcor->or_configflag, cmd);
1076 /* unblock posted write */
1077 cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
1079 reg = HC_VERSION(ehci_readl(&ctrl->hccr->cr_capbase));
1080 printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
1085 int usb_lowlevel_stop(int index)
1087 ehci_shutdown(&ehcic[index]);
1088 return ehci_hcd_stop(index);
1091 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
1093 struct ehci_ctrl *ctrl = &ehcic[index];
1098 * Set ops to default_ehci_ops, ehci_hcd_init should call
1099 * ehci_set_controller_priv to change any of these function pointers.
1101 ctrl->ops = default_ehci_ops;
1103 rc = ehci_hcd_init(index, init, &ctrl->hccr, &ctrl->hcor);
1106 if (init == USB_INIT_DEVICE)
1109 /* EHCI spec section 4.1 */
1110 if (ehci_reset(ctrl))
1113 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
1114 rc = ehci_hcd_init(index, init, &ctrl->hccr, &ctrl->hcor);
1118 #ifdef CONFIG_USB_EHCI_FARADAY
1119 tweaks |= EHCI_TWEAK_NO_INIT_CF;
1121 rc = ehci_common_init(ctrl, tweaks);
1127 *controller = &ehcic[index];
1131 static int _ehci_submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
1132 void *buffer, int length)
1135 if (usb_pipetype(pipe) != PIPE_BULK) {
1136 debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
1139 return ehci_submit_async(dev, pipe, buffer, length, NULL);
1142 static int _ehci_submit_control_msg(struct usb_device *dev, unsigned long pipe,
1143 void *buffer, int length,
1144 struct devrequest *setup)
1146 struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1148 if (usb_pipetype(pipe) != PIPE_CONTROL) {
1149 debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
1153 if (usb_pipedevice(pipe) == ctrl->rootdev) {
1155 dev->speed = USB_SPEED_HIGH;
1156 return ehci_submit_root(dev, pipe, buffer, length, setup);
1158 return ehci_submit_async(dev, pipe, buffer, length, setup);
1169 #define NEXT_QH(qh) (struct QH *)((unsigned long)hc32_to_cpu((qh)->qh_link) & ~0x1f)
1172 enable_periodic(struct ehci_ctrl *ctrl)
1175 struct ehci_hcor *hcor = ctrl->hcor;
1178 cmd = ehci_readl(&hcor->or_usbcmd);
1180 ehci_writel(&hcor->or_usbcmd, cmd);
1182 ret = handshake((uint32_t *)&hcor->or_usbsts,
1183 STS_PSS, STS_PSS, 100 * 1000);
1185 printf("EHCI failed: timeout when enabling periodic list\n");
1193 disable_periodic(struct ehci_ctrl *ctrl)
1196 struct ehci_hcor *hcor = ctrl->hcor;
1199 cmd = ehci_readl(&hcor->or_usbcmd);
1201 ehci_writel(&hcor->or_usbcmd, cmd);
1203 ret = handshake((uint32_t *)&hcor->or_usbsts,
1204 STS_PSS, 0, 100 * 1000);
1206 printf("EHCI failed: timeout when disabling periodic list\n");
1213 create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
1214 int elementsize, void *buffer, int interval)
1216 struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1217 struct int_queue *result = NULL;
1221 * Interrupt transfers requiring several transactions are not supported
1222 * because bInterval is ignored.
1224 * Also, ehci_submit_async() relies on wMaxPacketSize being a power of 2
1225 * <= PKT_ALIGN if several qTDs are required, while the USB
1226 * specification does not constrain this for interrupt transfers. That
1227 * means that ehci_submit_async() would support interrupt transfers
1228 * requiring several transactions only as long as the transfer size does
1229 * not require more than a single qTD.
1231 if (elementsize > usb_maxpacket(dev, pipe)) {
1232 printf("%s: xfers requiring several transactions are not supported.\n",
1237 debug("Enter create_int_queue\n");
1238 if (usb_pipetype(pipe) != PIPE_INTERRUPT) {
1239 debug("non-interrupt pipe (type=%lu)", usb_pipetype(pipe));
1243 /* limit to 4 full pages worth of data -
1244 * we can safely fit them in a single TD,
1245 * no matter the alignment
1247 if (elementsize >= 16384) {
1248 debug("too large elements for interrupt transfers\n");
1252 result = malloc(sizeof(*result));
1254 debug("ehci intr queue: out of memory\n");
1257 result->elementsize = elementsize;
1258 result->first = memalign(USB_DMA_MINALIGN,
1259 sizeof(struct QH) * queuesize);
1260 if (!result->first) {
1261 debug("ehci intr queue: out of memory\n");
1264 result->current = result->first;
1265 result->last = result->first + queuesize - 1;
1266 result->tds = memalign(USB_DMA_MINALIGN,
1267 sizeof(struct qTD) * queuesize);
1269 debug("ehci intr queue: out of memory\n");
1272 memset(result->first, 0, sizeof(struct QH) * queuesize);
1273 memset(result->tds, 0, sizeof(struct qTD) * queuesize);
1275 for (i = 0; i < queuesize; i++) {
1276 struct QH *qh = result->first + i;
1277 struct qTD *td = result->tds + i;
1278 void **buf = &qh->buffer;
1280 qh->qh_link = cpu_to_hc32((unsigned long)(qh+1) | QH_LINK_TYPE_QH);
1281 if (i == queuesize - 1)
1282 qh->qh_link = cpu_to_hc32(QH_LINK_TERMINATE);
1284 qh->qh_overlay.qt_next = cpu_to_hc32((unsigned long)td);
1285 qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1287 cpu_to_hc32((0 << 28) | /* No NAK reload (ehci 4.9) */
1288 (usb_maxpacket(dev, pipe) << 16) | /* MPS */
1290 QH_ENDPT1_EPS(ehci_encode_speed(dev->speed)) |
1291 (usb_pipeendpoint(pipe) << 8) | /* Endpoint Number */
1292 (usb_pipedevice(pipe) << 0));
1293 qh->qh_endpt2 = cpu_to_hc32((1 << 30) | /* 1 Tx per mframe */
1294 (1 << 0)); /* S-mask: microframe 0 */
1295 if (dev->speed == USB_SPEED_LOW ||
1296 dev->speed == USB_SPEED_FULL) {
1297 /* C-mask: microframes 2-4 */
1298 qh->qh_endpt2 |= cpu_to_hc32((0x1c << 8));
1300 ehci_update_endpt2_dev_n_port(dev, qh);
1302 td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
1303 td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1304 debug("communication direction is '%s'\n",
1305 usb_pipein(pipe) ? "in" : "out");
1306 td->qt_token = cpu_to_hc32((elementsize << 16) |
1307 ((usb_pipein(pipe) ? 1 : 0) << 8) | /* IN/OUT token */
1310 cpu_to_hc32((unsigned long)buffer + i * elementsize);
1312 cpu_to_hc32((td->qt_buffer[0] + 0x1000) & ~0xfff);
1314 cpu_to_hc32((td->qt_buffer[0] + 0x2000) & ~0xfff);
1316 cpu_to_hc32((td->qt_buffer[0] + 0x3000) & ~0xfff);
1318 cpu_to_hc32((td->qt_buffer[0] + 0x4000) & ~0xfff);
1320 *buf = buffer + i * elementsize;
1323 flush_dcache_range((unsigned long)buffer,
1324 ALIGN_END_ADDR(char, buffer,
1325 queuesize * elementsize));
1326 flush_dcache_range((unsigned long)result->first,
1327 ALIGN_END_ADDR(struct QH, result->first,
1329 flush_dcache_range((unsigned long)result->tds,
1330 ALIGN_END_ADDR(struct qTD, result->tds,
1333 if (ctrl->periodic_schedules > 0) {
1334 if (disable_periodic(ctrl) < 0) {
1335 debug("FATAL: periodic should never fail, but did");
1340 /* hook up to periodic list */
1341 struct QH *list = &ctrl->periodic_queue;
1342 result->last->qh_link = list->qh_link;
1343 list->qh_link = cpu_to_hc32((unsigned long)result->first | QH_LINK_TYPE_QH);
1345 flush_dcache_range((unsigned long)result->last,
1346 ALIGN_END_ADDR(struct QH, result->last, 1));
1347 flush_dcache_range((unsigned long)list,
1348 ALIGN_END_ADDR(struct QH, list, 1));
1350 if (enable_periodic(ctrl) < 0) {
1351 debug("FATAL: periodic should never fail, but did");
1354 ctrl->periodic_schedules++;
1356 debug("Exit create_int_queue\n");
1363 free(result->first);
1370 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
1372 struct QH *cur = queue->current;
1375 /* depleted queue */
1377 debug("Exit poll_int_queue with completed queue\n");
1381 cur_td = &queue->tds[queue->current - queue->first];
1382 invalidate_dcache_range((unsigned long)cur_td,
1383 ALIGN_END_ADDR(struct qTD, cur_td, 1));
1384 if (QT_TOKEN_GET_STATUS(hc32_to_cpu(cur_td->qt_token)) &
1385 QT_TOKEN_STATUS_ACTIVE) {
1386 debug("Exit poll_int_queue with no completed intr transfer. token is %x\n",
1387 hc32_to_cpu(cur_td->qt_token));
1390 if (!(cur->qh_link & QH_LINK_TERMINATE))
1393 queue->current = NULL;
1395 invalidate_dcache_range((unsigned long)cur->buffer,
1396 ALIGN_END_ADDR(char, cur->buffer,
1397 queue->elementsize));
1399 debug("Exit poll_int_queue with completed intr transfer. token is %x at %p (first at %p)\n",
1400 hc32_to_cpu(cur_td->qt_token), cur, queue->first);
1404 /* Do not free buffers associated with QHs, they're owned by someone else */
1406 destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
1408 struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1410 unsigned long timeout;
1412 if (disable_periodic(ctrl) < 0) {
1413 debug("FATAL: periodic should never fail, but did");
1416 ctrl->periodic_schedules--;
1418 struct QH *cur = &ctrl->periodic_queue;
1419 timeout = get_timer(0) + 500; /* abort after 500ms */
1420 while (!(cur->qh_link & cpu_to_hc32(QH_LINK_TERMINATE))) {
1421 debug("considering %p, with qh_link %x\n", cur, cur->qh_link);
1422 if (NEXT_QH(cur) == queue->first) {
1423 debug("found candidate. removing from chain\n");
1424 cur->qh_link = queue->last->qh_link;
1425 flush_dcache_range((unsigned long)cur,
1426 ALIGN_END_ADDR(struct QH, cur, 1));
1431 if (get_timer(0) > timeout) {
1432 printf("Timeout destroying interrupt endpoint queue\n");
1438 if (ctrl->periodic_schedules > 0) {
1439 result = enable_periodic(ctrl);
1441 debug("FATAL: periodic should never fail, but did");
1452 static int _ehci_submit_int_msg(struct usb_device *dev, unsigned long pipe,
1453 void *buffer, int length, int interval)
1456 struct int_queue *queue;
1457 unsigned long timeout;
1458 int result = 0, ret;
1460 debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
1461 dev, pipe, buffer, length, interval);
1463 queue = create_int_queue(dev, pipe, 1, length, buffer, interval);
1467 timeout = get_timer(0) + USB_TIMEOUT_MS(pipe);
1468 while ((backbuffer = poll_int_queue(dev, queue)) == NULL)
1469 if (get_timer(0) > timeout) {
1470 printf("Timeout poll on interrupt endpoint\n");
1471 result = -ETIMEDOUT;
1475 if (backbuffer != buffer) {
1476 debug("got wrong buffer back (%p instead of %p)\n",
1477 backbuffer, buffer);
1481 ret = destroy_int_queue(dev, queue);
1485 /* everything worked out fine */
1489 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
1490 void *buffer, int length)
1492 return _ehci_submit_bulk_msg(dev, pipe, buffer, length);
1495 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1496 int length, struct devrequest *setup)
1498 return _ehci_submit_control_msg(dev, pipe, buffer, length, setup);
1501 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
1502 void *buffer, int length, int interval)
1504 return _ehci_submit_int_msg(dev, pipe, buffer, length, interval);