xref: /rk3399_rockchip-uboot/drivers/usb/host/ehci-hcd.c (revision b86dc4195f38b5485788014794f2befd1fc2cc74)
1 /*-
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>
5  *
6  * All rights reserved.
7  *
8  * SPDX-License-Identifier:	GPL-2.0
9  */
10 #include <common.h>
11 #include <dm.h>
12 #include <errno.h>
13 #include <asm/byteorder.h>
14 #include <asm/unaligned.h>
15 #include <usb.h>
16 #include <asm/io.h>
17 #include <malloc.h>
18 #include <memalign.h>
19 #include <watchdog.h>
20 #include <linux/compiler.h>
21 
22 #include "ehci.h"
23 
24 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
25 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
26 #endif
27 
28 /*
29  * EHCI spec page 20 says that the HC may take up to 16 uFrames (= 4ms) to halt.
30  * Let's time out after 8 to have a little safety margin on top of that.
31  */
32 #define HCHALT_TIMEOUT (8 * 1000)
33 
34 #if !CONFIG_IS_ENABLED(DM_USB)
35 static struct ehci_ctrl ehcic[CONFIG_USB_MAX_CONTROLLER_COUNT];
36 #endif
37 
38 #define ALIGN_END_ADDR(type, ptr, size)			\
39 	((unsigned long)(ptr) + roundup((size) * sizeof(type), USB_DMA_MINALIGN))
40 
41 static struct descriptor {
42 	struct usb_hub_descriptor hub;
43 	struct usb_device_descriptor device;
44 	struct usb_linux_config_descriptor config;
45 	struct usb_linux_interface_descriptor interface;
46 	struct usb_endpoint_descriptor endpoint;
47 }  __attribute__ ((packed)) descriptor = {
48 	{
49 		0x8,		/* bDescLength */
50 		0x29,		/* bDescriptorType: hub descriptor */
51 		2,		/* bNrPorts -- runtime modified */
52 		0,		/* wHubCharacteristics */
53 		10,		/* bPwrOn2PwrGood */
54 		0,		/* bHubCntrCurrent */
55 		{		/* Device removable */
56 		}		/* at most 7 ports! XXX */
57 	},
58 	{
59 		0x12,		/* bLength */
60 		1,		/* bDescriptorType: UDESC_DEVICE */
61 		cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
62 		9,		/* bDeviceClass: UDCLASS_HUB */
63 		0,		/* bDeviceSubClass: UDSUBCLASS_HUB */
64 		1,		/* bDeviceProtocol: UDPROTO_HSHUBSTT */
65 		64,		/* bMaxPacketSize: 64 bytes */
66 		0x0000,		/* idVendor */
67 		0x0000,		/* idProduct */
68 		cpu_to_le16(0x0100), /* bcdDevice */
69 		1,		/* iManufacturer */
70 		2,		/* iProduct */
71 		0,		/* iSerialNumber */
72 		1		/* bNumConfigurations: 1 */
73 	},
74 	{
75 		0x9,
76 		2,		/* bDescriptorType: UDESC_CONFIG */
77 		cpu_to_le16(0x19),
78 		1,		/* bNumInterface */
79 		1,		/* bConfigurationValue */
80 		0,		/* iConfiguration */
81 		0x40,		/* bmAttributes: UC_SELF_POWER */
82 		0		/* bMaxPower */
83 	},
84 	{
85 		0x9,		/* bLength */
86 		4,		/* bDescriptorType: UDESC_INTERFACE */
87 		0,		/* bInterfaceNumber */
88 		0,		/* bAlternateSetting */
89 		1,		/* bNumEndpoints */
90 		9,		/* bInterfaceClass: UICLASS_HUB */
91 		0,		/* bInterfaceSubClass: UISUBCLASS_HUB */
92 		0,		/* bInterfaceProtocol: UIPROTO_HSHUBSTT */
93 		0		/* iInterface */
94 	},
95 	{
96 		0x7,		/* bLength */
97 		5,		/* bDescriptorType: UDESC_ENDPOINT */
98 		0x81,		/* bEndpointAddress:
99 				 * UE_DIR_IN | EHCI_INTR_ENDPT
100 				 */
101 		3,		/* bmAttributes: UE_INTERRUPT */
102 		8,		/* wMaxPacketSize */
103 		255		/* bInterval */
104 	},
105 };
106 
107 #if defined(CONFIG_EHCI_IS_TDI)
108 #define ehci_is_TDI()	(1)
109 #else
110 #define ehci_is_TDI()	(0)
111 #endif
112 
113 static struct ehci_ctrl *ehci_get_ctrl(struct usb_device *udev)
114 {
115 #if CONFIG_IS_ENABLED(DM_USB)
116 	return dev_get_priv(usb_get_bus(udev->dev));
117 #else
118 	return udev->controller;
119 #endif
120 }
121 
122 static int ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
123 {
124 	return PORTSC_PSPD(reg);
125 }
126 
127 static void ehci_set_usbmode(struct ehci_ctrl *ctrl)
128 {
129 	uint32_t tmp;
130 	uint32_t *reg_ptr;
131 
132 	reg_ptr = (uint32_t *)((u8 *)&ctrl->hcor->or_usbcmd + USBMODE);
133 	tmp = ehci_readl(reg_ptr);
134 	tmp |= USBMODE_CM_HC;
135 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
136 	tmp |= USBMODE_BE;
137 #else
138 	tmp &= ~USBMODE_BE;
139 #endif
140 	ehci_writel(reg_ptr, tmp);
141 }
142 
143 static void ehci_powerup_fixup(struct ehci_ctrl *ctrl, uint32_t *status_reg,
144 			       uint32_t *reg)
145 {
146 	mdelay(50);
147 }
148 
149 static uint32_t *ehci_get_portsc_register(struct ehci_ctrl *ctrl, int port)
150 {
151 	int max_ports = HCS_N_PORTS(ehci_readl(&ctrl->hccr->cr_hcsparams));
152 
153 	if (port < 0 || port >= max_ports) {
154 		/* Printing the message would cause a scan failure! */
155 		debug("The request port(%u) exceeds maximum port number\n",
156 		      port);
157 		return NULL;
158 	}
159 
160 	return (uint32_t *)&ctrl->hcor->or_portsc[port];
161 }
162 
163 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
164 {
165 	uint32_t result;
166 	do {
167 		result = ehci_readl(ptr);
168 		udelay(5);
169 		if (result == ~(uint32_t)0)
170 			return -1;
171 		result &= mask;
172 		if (result == done)
173 			return 0;
174 		usec--;
175 	} while (usec > 0);
176 	return -1;
177 }
178 
179 static int ehci_reset(struct ehci_ctrl *ctrl)
180 {
181 	uint32_t cmd;
182 	int ret = 0;
183 
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);
189 	if (ret < 0) {
190 		printf("EHCI fail to reset\n");
191 		goto out;
192 	}
193 
194 	if (ehci_is_TDI())
195 		ctrl->ops.set_usb_mode(ctrl);
196 
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);
202 #endif
203 out:
204 	return ret;
205 }
206 
207 static int ehci_shutdown(struct ehci_ctrl *ctrl)
208 {
209 	int i, ret = 0;
210 	uint32_t cmd, reg;
211 	int max_ports = HCS_N_PORTS(ehci_readl(&ctrl->hccr->cr_hcsparams));
212 
213 	cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
214 	/* If not run, directly return */
215 	if (!(cmd & CMD_RUN))
216 		return 0;
217 	cmd &= ~(CMD_PSE | CMD_ASE);
218 	ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
219 	ret = handshake(&ctrl->hcor->or_usbsts, STS_ASS | STS_PSS, 0,
220 		100 * 1000);
221 
222 	if (!ret) {
223 		for (i = 0; i < max_ports; i++) {
224 			reg = ehci_readl(&ctrl->hcor->or_portsc[i]);
225 			reg |= EHCI_PS_SUSP;
226 			ehci_writel(&ctrl->hcor->or_portsc[i], reg);
227 		}
228 
229 		cmd &= ~CMD_RUN;
230 		ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
231 		ret = handshake(&ctrl->hcor->or_usbsts, STS_HALT, STS_HALT,
232 			HCHALT_TIMEOUT);
233 	}
234 
235 	if (ret)
236 		puts("EHCI failed to shut down host controller.\n");
237 
238 	return ret;
239 }
240 
241 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
242 {
243 	uint32_t delta, next;
244 	unsigned long addr = (unsigned long)buf;
245 	int idx;
246 
247 	if (addr != ALIGN(addr, ARCH_DMA_MINALIGN))
248 		debug("EHCI-HCD: Misaligned buffer address (%p)\n", buf);
249 
250 	flush_dcache_range(addr, ALIGN(addr + sz, ARCH_DMA_MINALIGN));
251 
252 	idx = 0;
253 	while (idx < QT_BUFFER_CNT) {
254 		td->qt_buffer[idx] = cpu_to_hc32(virt_to_phys((void *)addr));
255 		td->qt_buffer_hi[idx] = 0;
256 		next = (addr + EHCI_PAGE_SIZE) & ~(EHCI_PAGE_SIZE - 1);
257 		delta = next - addr;
258 		if (delta >= sz)
259 			break;
260 		sz -= delta;
261 		addr = next;
262 		idx++;
263 	}
264 
265 	if (idx == QT_BUFFER_CNT) {
266 		printf("out of buffer pointers (%zu bytes left)\n", sz);
267 		return -1;
268 	}
269 
270 	return 0;
271 }
272 
273 static inline u8 ehci_encode_speed(enum usb_device_speed speed)
274 {
275 	#define QH_HIGH_SPEED	2
276 	#define QH_FULL_SPEED	0
277 	#define QH_LOW_SPEED	1
278 	if (speed == USB_SPEED_HIGH)
279 		return QH_HIGH_SPEED;
280 	if (speed == USB_SPEED_LOW)
281 		return QH_LOW_SPEED;
282 	return QH_FULL_SPEED;
283 }
284 
285 static void ehci_update_endpt2_dev_n_port(struct usb_device *udev,
286 					  struct QH *qh)
287 {
288 	uint8_t portnr = 0;
289 	uint8_t hubaddr = 0;
290 
291 	if (udev->speed != USB_SPEED_LOW && udev->speed != USB_SPEED_FULL)
292 		return;
293 
294 	usb_find_usb2_hub_address_port(udev, &hubaddr, &portnr);
295 
296 	qh->qh_endpt2 |= cpu_to_hc32(QH_ENDPT2_PORTNUM(portnr) |
297 				     QH_ENDPT2_HUBADDR(hubaddr));
298 }
299 
300 static int
301 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
302 		   int length, struct devrequest *req)
303 {
304 	ALLOC_ALIGN_BUFFER(struct QH, qh, 1, USB_DMA_MINALIGN);
305 	struct qTD *qtd;
306 	int qtd_count = 0;
307 	int qtd_counter = 0;
308 	volatile struct qTD *vtd;
309 	unsigned long ts;
310 	uint32_t *tdp;
311 	uint32_t endpt, maxpacket, token, usbsts, qhtoken;
312 	uint32_t c, toggle;
313 	uint32_t cmd;
314 	int timeout;
315 	int ret = 0;
316 	struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
317 
318 	debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
319 	      buffer, length, req);
320 	if (req != NULL)
321 		debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
322 		      req->request, req->request,
323 		      req->requesttype, req->requesttype,
324 		      le16_to_cpu(req->value), le16_to_cpu(req->value),
325 		      le16_to_cpu(req->index));
326 
327 #define PKT_ALIGN	512
328 	/*
329 	 * The USB transfer is split into qTD transfers. Eeach qTD transfer is
330 	 * described by a transfer descriptor (the qTD). The qTDs form a linked
331 	 * list with a queue head (QH).
332 	 *
333 	 * Each qTD transfer starts with a new USB packet, i.e. a packet cannot
334 	 * have its beginning in a qTD transfer and its end in the following
335 	 * one, so the qTD transfer lengths have to be chosen accordingly.
336 	 *
337 	 * Each qTD transfer uses up to QT_BUFFER_CNT data buffers, mapped to
338 	 * single pages. The first data buffer can start at any offset within a
339 	 * page (not considering the cache-line alignment issues), while the
340 	 * following buffers must be page-aligned. There is no alignment
341 	 * constraint on the size of a qTD transfer.
342 	 */
343 	if (req != NULL)
344 		/* 1 qTD will be needed for SETUP, and 1 for ACK. */
345 		qtd_count += 1 + 1;
346 	if (length > 0 || req == NULL) {
347 		/*
348 		 * Determine the qTD transfer size that will be used for the
349 		 * data payload (not considering the first qTD transfer, which
350 		 * may be longer or shorter, and the final one, which may be
351 		 * shorter).
352 		 *
353 		 * In order to keep each packet within a qTD transfer, the qTD
354 		 * transfer size is aligned to PKT_ALIGN, which is a multiple of
355 		 * wMaxPacketSize (except in some cases for interrupt transfers,
356 		 * see comment in submit_int_msg()).
357 		 *
358 		 * By default, i.e. if the input buffer is aligned to PKT_ALIGN,
359 		 * QT_BUFFER_CNT full pages will be used.
360 		 */
361 		int xfr_sz = QT_BUFFER_CNT;
362 		/*
363 		 * However, if the input buffer is not aligned to PKT_ALIGN, the
364 		 * qTD transfer size will be one page shorter, and the first qTD
365 		 * data buffer of each transfer will be page-unaligned.
366 		 */
367 		if ((unsigned long)buffer & (PKT_ALIGN - 1))
368 			xfr_sz--;
369 		/* Convert the qTD transfer size to bytes. */
370 		xfr_sz *= EHCI_PAGE_SIZE;
371 		/*
372 		 * Approximate by excess the number of qTDs that will be
373 		 * required for the data payload. The exact formula is way more
374 		 * complicated and saves at most 2 qTDs, i.e. a total of 128
375 		 * bytes.
376 		 */
377 		qtd_count += 2 + length / xfr_sz;
378 	}
379 /*
380  * Threshold value based on the worst-case total size of the allocated qTDs for
381  * a mass-storage transfer of 65535 blocks of 512 bytes.
382  */
383 #if CONFIG_SYS_MALLOC_LEN <= 64 + 128 * 1024
384 #warning CONFIG_SYS_MALLOC_LEN may be too small for EHCI
385 #endif
386 	qtd = memalign(USB_DMA_MINALIGN, qtd_count * sizeof(struct qTD));
387 	if (qtd == NULL) {
388 		printf("unable to allocate TDs\n");
389 		return -1;
390 	}
391 
392 	memset(qh, 0, sizeof(struct QH));
393 	memset(qtd, 0, qtd_count * sizeof(*qtd));
394 
395 	toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
396 
397 	/*
398 	 * Setup QH (3.6 in ehci-r10.pdf)
399 	 *
400 	 *   qh_link ................. 03-00 H
401 	 *   qh_endpt1 ............... 07-04 H
402 	 *   qh_endpt2 ............... 0B-08 H
403 	 * - qh_curtd
404 	 *   qh_overlay.qt_next ...... 13-10 H
405 	 * - qh_overlay.qt_altnext
406 	 */
407 	qh->qh_link = cpu_to_hc32(virt_to_phys(&ctrl->qh_list) | QH_LINK_TYPE_QH);
408 	c = (dev->speed != USB_SPEED_HIGH) && !usb_pipeendpoint(pipe);
409 	maxpacket = usb_maxpacket(dev, pipe);
410 	endpt = QH_ENDPT1_RL(8) | QH_ENDPT1_C(c) |
411 		QH_ENDPT1_MAXPKTLEN(maxpacket) | QH_ENDPT1_H(0) |
412 		QH_ENDPT1_DTC(QH_ENDPT1_DTC_DT_FROM_QTD) |
413 		QH_ENDPT1_EPS(ehci_encode_speed(dev->speed)) |
414 		QH_ENDPT1_ENDPT(usb_pipeendpoint(pipe)) | QH_ENDPT1_I(0) |
415 		QH_ENDPT1_DEVADDR(usb_pipedevice(pipe));
416 	qh->qh_endpt1 = cpu_to_hc32(endpt);
417 	endpt = QH_ENDPT2_MULT(1) | QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(0);
418 	qh->qh_endpt2 = cpu_to_hc32(endpt);
419 	ehci_update_endpt2_dev_n_port(dev, qh);
420 	qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
421 	qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
422 
423 	tdp = &qh->qh_overlay.qt_next;
424 	if (req != NULL) {
425 		/*
426 		 * Setup request qTD (3.5 in ehci-r10.pdf)
427 		 *
428 		 *   qt_next ................ 03-00 H
429 		 *   qt_altnext ............. 07-04 H
430 		 *   qt_token ............... 0B-08 H
431 		 *
432 		 *   [ buffer, buffer_hi ] loaded with "req".
433 		 */
434 		qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
435 		qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
436 		token = QT_TOKEN_DT(0) | QT_TOKEN_TOTALBYTES(sizeof(*req)) |
437 			QT_TOKEN_IOC(0) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) |
438 			QT_TOKEN_PID(QT_TOKEN_PID_SETUP) |
439 			QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
440 		qtd[qtd_counter].qt_token = cpu_to_hc32(token);
441 		if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req))) {
442 			printf("unable to construct SETUP TD\n");
443 			goto fail;
444 		}
445 		/* Update previous qTD! */
446 		*tdp = cpu_to_hc32(virt_to_phys(&qtd[qtd_counter]));
447 		tdp = &qtd[qtd_counter++].qt_next;
448 		toggle = 1;
449 	}
450 
451 	if (length > 0 || req == NULL) {
452 		uint8_t *buf_ptr = buffer;
453 		int left_length = length;
454 
455 		do {
456 			/*
457 			 * Determine the size of this qTD transfer. By default,
458 			 * QT_BUFFER_CNT full pages can be used.
459 			 */
460 			int xfr_bytes = QT_BUFFER_CNT * EHCI_PAGE_SIZE;
461 			/*
462 			 * However, if the input buffer is not page-aligned, the
463 			 * portion of the first page before the buffer start
464 			 * offset within that page is unusable.
465 			 */
466 			xfr_bytes -= (unsigned long)buf_ptr & (EHCI_PAGE_SIZE - 1);
467 			/*
468 			 * In order to keep each packet within a qTD transfer,
469 			 * align the qTD transfer size to PKT_ALIGN.
470 			 */
471 			xfr_bytes &= ~(PKT_ALIGN - 1);
472 			/*
473 			 * This transfer may be shorter than the available qTD
474 			 * transfer size that has just been computed.
475 			 */
476 			xfr_bytes = min(xfr_bytes, left_length);
477 
478 			/*
479 			 * Setup request qTD (3.5 in ehci-r10.pdf)
480 			 *
481 			 *   qt_next ................ 03-00 H
482 			 *   qt_altnext ............. 07-04 H
483 			 *   qt_token ............... 0B-08 H
484 			 *
485 			 *   [ buffer, buffer_hi ] loaded with "buffer".
486 			 */
487 			qtd[qtd_counter].qt_next =
488 					cpu_to_hc32(QT_NEXT_TERMINATE);
489 			qtd[qtd_counter].qt_altnext =
490 					cpu_to_hc32(QT_NEXT_TERMINATE);
491 			token = QT_TOKEN_DT(toggle) |
492 				QT_TOKEN_TOTALBYTES(xfr_bytes) |
493 				QT_TOKEN_IOC(req == NULL) | QT_TOKEN_CPAGE(0) |
494 				QT_TOKEN_CERR(3) |
495 				QT_TOKEN_PID(usb_pipein(pipe) ?
496 					QT_TOKEN_PID_IN : QT_TOKEN_PID_OUT) |
497 				QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
498 			qtd[qtd_counter].qt_token = cpu_to_hc32(token);
499 			if (ehci_td_buffer(&qtd[qtd_counter], buf_ptr,
500 						xfr_bytes)) {
501 				printf("unable to construct DATA TD\n");
502 				goto fail;
503 			}
504 			/* Update previous qTD! */
505 			*tdp = cpu_to_hc32(virt_to_phys(&qtd[qtd_counter]));
506 			tdp = &qtd[qtd_counter++].qt_next;
507 			/*
508 			 * Data toggle has to be adjusted since the qTD transfer
509 			 * size is not always an even multiple of
510 			 * wMaxPacketSize.
511 			 */
512 			if ((xfr_bytes / maxpacket) & 1)
513 				toggle ^= 1;
514 			buf_ptr += xfr_bytes;
515 			left_length -= xfr_bytes;
516 		} while (left_length > 0);
517 	}
518 
519 	if (req != NULL) {
520 		/*
521 		 * Setup request qTD (3.5 in ehci-r10.pdf)
522 		 *
523 		 *   qt_next ................ 03-00 H
524 		 *   qt_altnext ............. 07-04 H
525 		 *   qt_token ............... 0B-08 H
526 		 */
527 		qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
528 		qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
529 		token = QT_TOKEN_DT(1) | QT_TOKEN_TOTALBYTES(0) |
530 			QT_TOKEN_IOC(1) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) |
531 			QT_TOKEN_PID(usb_pipein(pipe) ?
532 				QT_TOKEN_PID_OUT : QT_TOKEN_PID_IN) |
533 			QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE);
534 		qtd[qtd_counter].qt_token = cpu_to_hc32(token);
535 		/* Update previous qTD! */
536 		*tdp = cpu_to_hc32(virt_to_phys(&qtd[qtd_counter]));
537 		tdp = &qtd[qtd_counter++].qt_next;
538 	}
539 
540 	ctrl->qh_list.qh_link = cpu_to_hc32(virt_to_phys(qh) | QH_LINK_TYPE_QH);
541 
542 	/* Flush dcache */
543 	flush_dcache_range((unsigned long)&ctrl->qh_list,
544 		ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1));
545 	flush_dcache_range((unsigned long)qh, ALIGN_END_ADDR(struct QH, qh, 1));
546 	flush_dcache_range((unsigned long)qtd,
547 			   ALIGN_END_ADDR(struct qTD, qtd, qtd_count));
548 
549 	usbsts = ehci_readl(&ctrl->hcor->or_usbsts);
550 	ehci_writel(&ctrl->hcor->or_usbsts, (usbsts & 0x3f));
551 
552 	/* Enable async. schedule. */
553 	cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
554 	if (!(cmd & CMD_ASE)) {
555 		cmd |= CMD_ASE;
556 		ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
557 
558 		ret = handshake((uint32_t *)&ctrl->hcor->or_usbsts, STS_ASS, STS_ASS,
559 				100 * 1000);
560 		if (ret < 0) {
561 			printf("EHCI fail timeout STS_ASS set\n");
562 			goto fail;
563 		}
564 	}
565 
566 	/* Wait for TDs to be processed. */
567 	ts = get_timer(0);
568 	vtd = &qtd[qtd_counter - 1];
569 	timeout = USB_TIMEOUT_MS(pipe);
570 	do {
571 		/* Invalidate dcache */
572 		invalidate_dcache_range((unsigned long)&ctrl->qh_list,
573 			ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1));
574 		invalidate_dcache_range((unsigned long)qh,
575 			ALIGN_END_ADDR(struct QH, qh, 1));
576 		invalidate_dcache_range((unsigned long)qtd,
577 			ALIGN_END_ADDR(struct qTD, qtd, qtd_count));
578 
579 		token = hc32_to_cpu(vtd->qt_token);
580 		if (!(QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE))
581 			break;
582 		WATCHDOG_RESET();
583 	} while (get_timer(ts) < timeout);
584 	qhtoken = hc32_to_cpu(qh->qh_overlay.qt_token);
585 
586 	ctrl->qh_list.qh_link = cpu_to_hc32(virt_to_phys(&ctrl->qh_list) | QH_LINK_TYPE_QH);
587 	flush_dcache_range((unsigned long)&ctrl->qh_list,
588 		ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1));
589 
590 	/*
591 	 * Invalidate the memory area occupied by buffer
592 	 * Don't try to fix the buffer alignment, if it isn't properly
593 	 * aligned it's upper layer's fault so let invalidate_dcache_range()
594 	 * vow about it. But we have to fix the length as it's actual
595 	 * transfer length and can be unaligned. This is potentially
596 	 * dangerous operation, it's responsibility of the calling
597 	 * code to make sure enough space is reserved.
598 	 */
599 	if (buffer != NULL && length > 0)
600 		invalidate_dcache_range((unsigned long)buffer,
601 			ALIGN((unsigned long)buffer + length, ARCH_DMA_MINALIGN));
602 
603 	/* Check that the TD processing happened */
604 	if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE)
605 		printf("EHCI timed out on TD - token=%#x\n", token);
606 
607 	if (!(QT_TOKEN_GET_STATUS(qhtoken) & QT_TOKEN_STATUS_ACTIVE)) {
608 		debug("TOKEN=%#x\n", qhtoken);
609 		switch (QT_TOKEN_GET_STATUS(qhtoken) &
610 			~(QT_TOKEN_STATUS_SPLITXSTATE | QT_TOKEN_STATUS_PERR)) {
611 		case 0:
612 			toggle = QT_TOKEN_GET_DT(qhtoken);
613 			usb_settoggle(dev, usb_pipeendpoint(pipe),
614 				       usb_pipeout(pipe), toggle);
615 			dev->status = 0;
616 			break;
617 		case QT_TOKEN_STATUS_HALTED:
618 			dev->status = USB_ST_STALLED;
619 			break;
620 		case QT_TOKEN_STATUS_ACTIVE | QT_TOKEN_STATUS_DATBUFERR:
621 		case QT_TOKEN_STATUS_DATBUFERR:
622 			dev->status = USB_ST_BUF_ERR;
623 			break;
624 		case QT_TOKEN_STATUS_HALTED | QT_TOKEN_STATUS_BABBLEDET:
625 		case QT_TOKEN_STATUS_BABBLEDET:
626 			dev->status = USB_ST_BABBLE_DET;
627 			break;
628 		default:
629 			dev->status = USB_ST_CRC_ERR;
630 			if (QT_TOKEN_GET_STATUS(qhtoken) & QT_TOKEN_STATUS_HALTED)
631 				dev->status |= USB_ST_STALLED;
632 			break;
633 		}
634 		dev->act_len = length - QT_TOKEN_GET_TOTALBYTES(qhtoken);
635 	} else {
636 		dev->act_len = 0;
637 #ifndef CONFIG_USB_EHCI_FARADAY
638 		debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
639 		      dev->devnum, ehci_readl(&ctrl->hcor->or_usbsts),
640 		      ehci_readl(&ctrl->hcor->or_portsc[0]),
641 		      ehci_readl(&ctrl->hcor->or_portsc[1]));
642 #endif
643 	}
644 
645 	free(qtd);
646 	return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
647 
648 fail:
649 	free(qtd);
650 	return -1;
651 }
652 
653 static int ehci_submit_root(struct usb_device *dev, unsigned long pipe,
654 			    void *buffer, int length, struct devrequest *req)
655 {
656 	uint8_t tmpbuf[4];
657 	u16 typeReq;
658 	void *srcptr = NULL;
659 	int len, srclen;
660 	uint32_t reg;
661 	uint32_t *status_reg;
662 	int port = le16_to_cpu(req->index) & 0xff;
663 	struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
664 
665 	srclen = 0;
666 
667 	debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
668 	      req->request, req->request,
669 	      req->requesttype, req->requesttype,
670 	      le16_to_cpu(req->value), le16_to_cpu(req->index));
671 
672 	typeReq = req->request | req->requesttype << 8;
673 
674 	switch (typeReq) {
675 	case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
676 	case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
677 	case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
678 		status_reg = ctrl->ops.get_portsc_register(ctrl, port - 1);
679 		if (!status_reg)
680 			return -1;
681 		break;
682 	default:
683 		status_reg = NULL;
684 		break;
685 	}
686 
687 	switch (typeReq) {
688 	case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
689 		switch (le16_to_cpu(req->value) >> 8) {
690 		case USB_DT_DEVICE:
691 			debug("USB_DT_DEVICE request\n");
692 			srcptr = &descriptor.device;
693 			srclen = descriptor.device.bLength;
694 			break;
695 		case USB_DT_CONFIG:
696 			debug("USB_DT_CONFIG config\n");
697 			srcptr = &descriptor.config;
698 			srclen = descriptor.config.bLength +
699 					descriptor.interface.bLength +
700 					descriptor.endpoint.bLength;
701 			break;
702 		case USB_DT_STRING:
703 			debug("USB_DT_STRING config\n");
704 			switch (le16_to_cpu(req->value) & 0xff) {
705 			case 0:	/* Language */
706 				srcptr = "\4\3\1\0";
707 				srclen = 4;
708 				break;
709 			case 1:	/* Vendor */
710 				srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
711 				srclen = 14;
712 				break;
713 			case 2:	/* Product */
714 				srcptr = "\52\3E\0H\0C\0I\0 "
715 					 "\0H\0o\0s\0t\0 "
716 					 "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
717 				srclen = 42;
718 				break;
719 			default:
720 				debug("unknown value DT_STRING %x\n",
721 					le16_to_cpu(req->value));
722 				goto unknown;
723 			}
724 			break;
725 		default:
726 			debug("unknown value %x\n", le16_to_cpu(req->value));
727 			goto unknown;
728 		}
729 		break;
730 	case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
731 		switch (le16_to_cpu(req->value) >> 8) {
732 		case USB_DT_HUB:
733 			debug("USB_DT_HUB config\n");
734 			srcptr = &descriptor.hub;
735 			srclen = descriptor.hub.bLength;
736 			break;
737 		default:
738 			debug("unknown value %x\n", le16_to_cpu(req->value));
739 			goto unknown;
740 		}
741 		break;
742 	case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
743 		debug("USB_REQ_SET_ADDRESS\n");
744 		ctrl->rootdev = le16_to_cpu(req->value);
745 		break;
746 	case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
747 		debug("USB_REQ_SET_CONFIGURATION\n");
748 		/* Nothing to do */
749 		break;
750 	case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
751 		tmpbuf[0] = 1;	/* USB_STATUS_SELFPOWERED */
752 		tmpbuf[1] = 0;
753 		srcptr = tmpbuf;
754 		srclen = 2;
755 		break;
756 	case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
757 		memset(tmpbuf, 0, 4);
758 		reg = ehci_readl(status_reg);
759 		if (reg & EHCI_PS_CS)
760 			tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
761 		if (reg & EHCI_PS_PE)
762 			tmpbuf[0] |= USB_PORT_STAT_ENABLE;
763 		if (reg & EHCI_PS_SUSP)
764 			tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
765 		if (reg & EHCI_PS_OCA)
766 			tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
767 		if (reg & EHCI_PS_PR)
768 			tmpbuf[0] |= USB_PORT_STAT_RESET;
769 		if (reg & EHCI_PS_PP)
770 			tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
771 
772 		if (ehci_is_TDI()) {
773 			switch (ctrl->ops.get_port_speed(ctrl, reg)) {
774 			case PORTSC_PSPD_FS:
775 				break;
776 			case PORTSC_PSPD_LS:
777 				tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
778 				break;
779 			case PORTSC_PSPD_HS:
780 			default:
781 				tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
782 				break;
783 			}
784 		} else {
785 			tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
786 		}
787 
788 		if (reg & EHCI_PS_CSC)
789 			tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
790 		if (reg & EHCI_PS_PEC)
791 			tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
792 		if (reg & EHCI_PS_OCC)
793 			tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
794 		if (ctrl->portreset & (1 << port))
795 			tmpbuf[2] |= USB_PORT_STAT_C_RESET;
796 
797 		srcptr = tmpbuf;
798 		srclen = 4;
799 		break;
800 	case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
801 		reg = ehci_readl(status_reg);
802 		reg &= ~EHCI_PS_CLEAR;
803 		switch (le16_to_cpu(req->value)) {
804 		case USB_PORT_FEAT_ENABLE:
805 			reg |= EHCI_PS_PE;
806 			ehci_writel(status_reg, reg);
807 			break;
808 		case USB_PORT_FEAT_POWER:
809 			if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams))) {
810 				reg |= EHCI_PS_PP;
811 				ehci_writel(status_reg, reg);
812 			}
813 			break;
814 		case USB_PORT_FEAT_RESET:
815 			if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
816 			    !ehci_is_TDI() &&
817 			    EHCI_PS_IS_LOWSPEED(reg)) {
818 				/* Low speed device, give up ownership. */
819 				debug("port %d low speed --> companion\n",
820 				      port - 1);
821 				reg |= EHCI_PS_PO;
822 				ehci_writel(status_reg, reg);
823 				return -ENXIO;
824 			} else {
825 				int ret;
826 
827 				reg |= EHCI_PS_PR;
828 				reg &= ~EHCI_PS_PE;
829 				ehci_writel(status_reg, reg);
830 				/*
831 				 * caller must wait, then call GetPortStatus
832 				 * usb 2.0 specification say 50 ms resets on
833 				 * root
834 				 */
835 				ctrl->ops.powerup_fixup(ctrl, status_reg, &reg);
836 
837 				ehci_writel(status_reg, reg & ~EHCI_PS_PR);
838 				/*
839 				 * A host controller must terminate the reset
840 				 * and stabilize the state of the port within
841 				 * 2 milliseconds
842 				 */
843 				ret = handshake(status_reg, EHCI_PS_PR, 0,
844 						2 * 1000);
845 				if (!ret) {
846 					reg = ehci_readl(status_reg);
847 					if ((reg & (EHCI_PS_PE | EHCI_PS_CS))
848 					    == EHCI_PS_CS && !ehci_is_TDI()) {
849 						debug("port %d full speed --> companion\n", port - 1);
850 						reg &= ~EHCI_PS_CLEAR;
851 						reg |= EHCI_PS_PO;
852 						ehci_writel(status_reg, reg);
853 						return -ENXIO;
854 					} else {
855 						ctrl->portreset |= 1 << port;
856 					}
857 				} else {
858 					printf("port(%d) reset error\n",
859 					       port - 1);
860 				}
861 			}
862 			break;
863 		case USB_PORT_FEAT_TEST:
864 			ehci_shutdown(ctrl);
865 			reg &= ~(0xf << 16);
866 			reg |= ((le16_to_cpu(req->index) >> 8) & 0xf) << 16;
867 			ehci_writel(status_reg, reg);
868 			break;
869 		default:
870 			debug("unknown feature %x\n", le16_to_cpu(req->value));
871 			goto unknown;
872 		}
873 		/* unblock posted writes */
874 		(void) ehci_readl(&ctrl->hcor->or_usbcmd);
875 		break;
876 	case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
877 		reg = ehci_readl(status_reg);
878 		reg &= ~EHCI_PS_CLEAR;
879 		switch (le16_to_cpu(req->value)) {
880 		case USB_PORT_FEAT_ENABLE:
881 			reg &= ~EHCI_PS_PE;
882 			break;
883 		case USB_PORT_FEAT_C_ENABLE:
884 			reg |= EHCI_PS_PE;
885 			break;
886 		case USB_PORT_FEAT_POWER:
887 			if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams)))
888 				reg &= ~EHCI_PS_PP;
889 			break;
890 		case USB_PORT_FEAT_C_CONNECTION:
891 			reg |= EHCI_PS_CSC;
892 			break;
893 		case USB_PORT_FEAT_OVER_CURRENT:
894 			reg |= EHCI_PS_OCC;
895 			break;
896 		case USB_PORT_FEAT_C_RESET:
897 			ctrl->portreset &= ~(1 << port);
898 			break;
899 		default:
900 			debug("unknown feature %x\n", le16_to_cpu(req->value));
901 			goto unknown;
902 		}
903 		ehci_writel(status_reg, reg);
904 		/* unblock posted write */
905 		(void) ehci_readl(&ctrl->hcor->or_usbcmd);
906 		break;
907 	default:
908 		debug("Unknown request\n");
909 		goto unknown;
910 	}
911 
912 	mdelay(1);
913 	len = min3(srclen, (int)le16_to_cpu(req->length), length);
914 	if (srcptr != NULL && len > 0)
915 		memcpy(buffer, srcptr, len);
916 	else
917 		debug("Len is 0\n");
918 
919 	dev->act_len = len;
920 	dev->status = 0;
921 	return 0;
922 
923 unknown:
924 	debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
925 	      req->requesttype, req->request, le16_to_cpu(req->value),
926 	      le16_to_cpu(req->index), le16_to_cpu(req->length));
927 
928 	dev->act_len = 0;
929 	dev->status = USB_ST_STALLED;
930 	return -1;
931 }
932 
933 static const struct ehci_ops default_ehci_ops = {
934 	.set_usb_mode		= ehci_set_usbmode,
935 	.get_port_speed		= ehci_get_port_speed,
936 	.powerup_fixup		= ehci_powerup_fixup,
937 	.get_portsc_register	= ehci_get_portsc_register,
938 };
939 
940 static void ehci_setup_ops(struct ehci_ctrl *ctrl, const struct ehci_ops *ops)
941 {
942 	if (!ops) {
943 		ctrl->ops = default_ehci_ops;
944 	} else {
945 		ctrl->ops = *ops;
946 		if (!ctrl->ops.set_usb_mode)
947 			ctrl->ops.set_usb_mode = ehci_set_usbmode;
948 		if (!ctrl->ops.get_port_speed)
949 			ctrl->ops.get_port_speed = ehci_get_port_speed;
950 		if (!ctrl->ops.powerup_fixup)
951 			ctrl->ops.powerup_fixup = ehci_powerup_fixup;
952 		if (!ctrl->ops.get_portsc_register)
953 			ctrl->ops.get_portsc_register =
954 					ehci_get_portsc_register;
955 	}
956 }
957 
958 #if !CONFIG_IS_ENABLED(DM_USB)
959 void ehci_set_controller_priv(int index, void *priv, const struct ehci_ops *ops)
960 {
961 	struct ehci_ctrl *ctrl = &ehcic[index];
962 
963 	ctrl->priv = priv;
964 	ehci_setup_ops(ctrl, ops);
965 }
966 
967 void *ehci_get_controller_priv(int index)
968 {
969 	return ehcic[index].priv;
970 }
971 #endif
972 
973 static int ehci_common_init(struct ehci_ctrl *ctrl, uint tweaks)
974 {
975 	struct QH *qh_list;
976 	struct QH *periodic;
977 	uint32_t reg;
978 	uint32_t cmd;
979 	int i;
980 
981 	/* Set the high address word (aka segment) for 64-bit controller */
982 	if (ehci_readl(&ctrl->hccr->cr_hccparams) & 1)
983 		ehci_writel(&ctrl->hcor->or_ctrldssegment, 0);
984 
985 	qh_list = &ctrl->qh_list;
986 
987 	/* Set head of reclaim list */
988 	memset(qh_list, 0, sizeof(*qh_list));
989 	qh_list->qh_link = cpu_to_hc32(virt_to_phys(qh_list) | QH_LINK_TYPE_QH);
990 	qh_list->qh_endpt1 = cpu_to_hc32(QH_ENDPT1_H(1) |
991 						QH_ENDPT1_EPS(USB_SPEED_HIGH));
992 	qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
993 	qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
994 	qh_list->qh_overlay.qt_token =
995 			cpu_to_hc32(QT_TOKEN_STATUS(QT_TOKEN_STATUS_HALTED));
996 
997 	flush_dcache_range((unsigned long)qh_list,
998 			   ALIGN_END_ADDR(struct QH, qh_list, 1));
999 
1000 	/* Set async. queue head pointer. */
1001 	ehci_writel(&ctrl->hcor->or_asynclistaddr, virt_to_phys(qh_list));
1002 
1003 	/*
1004 	 * Set up periodic list
1005 	 * Step 1: Parent QH for all periodic transfers.
1006 	 */
1007 	ctrl->periodic_schedules = 0;
1008 	periodic = &ctrl->periodic_queue;
1009 	memset(periodic, 0, sizeof(*periodic));
1010 	periodic->qh_link = cpu_to_hc32(QH_LINK_TERMINATE);
1011 	periodic->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
1012 	periodic->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1013 
1014 	flush_dcache_range((unsigned long)periodic,
1015 			   ALIGN_END_ADDR(struct QH, periodic, 1));
1016 
1017 	/*
1018 	 * Step 2: Setup frame-list: Every microframe, USB tries the same list.
1019 	 *         In particular, device specifications on polling frequency
1020 	 *         are disregarded. Keyboards seem to send NAK/NYet reliably
1021 	 *         when polled with an empty buffer.
1022 	 *
1023 	 *         Split Transactions will be spread across microframes using
1024 	 *         S-mask and C-mask.
1025 	 */
1026 	if (ctrl->periodic_list == NULL)
1027 		ctrl->periodic_list = memalign(4096, 1024 * 4);
1028 
1029 	if (!ctrl->periodic_list)
1030 		return -ENOMEM;
1031 	for (i = 0; i < 1024; i++) {
1032 		ctrl->periodic_list[i] = cpu_to_hc32((unsigned long)periodic
1033 						| QH_LINK_TYPE_QH);
1034 	}
1035 
1036 	flush_dcache_range((unsigned long)ctrl->periodic_list,
1037 			   ALIGN_END_ADDR(uint32_t, ctrl->periodic_list,
1038 					  1024));
1039 
1040 	/* Set periodic list base address */
1041 	ehci_writel(&ctrl->hcor->or_periodiclistbase,
1042 		(unsigned long)ctrl->periodic_list);
1043 
1044 	reg = ehci_readl(&ctrl->hccr->cr_hcsparams);
1045 	descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
1046 	debug("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
1047 	/* Port Indicators */
1048 	if (HCS_INDICATOR(reg))
1049 		put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics)
1050 				| 0x80, &descriptor.hub.wHubCharacteristics);
1051 	/* Port Power Control */
1052 	if (HCS_PPC(reg))
1053 		put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics)
1054 				| 0x01, &descriptor.hub.wHubCharacteristics);
1055 
1056 	/* Start the host controller. */
1057 	cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
1058 	/*
1059 	 * Philips, Intel, and maybe others need CMD_RUN before the
1060 	 * root hub will detect new devices (why?); NEC doesn't
1061 	 */
1062 	cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
1063 	cmd |= CMD_RUN;
1064 	ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
1065 
1066 	if (!(tweaks & EHCI_TWEAK_NO_INIT_CF)) {
1067 		/* take control over the ports */
1068 		cmd = ehci_readl(&ctrl->hcor->or_configflag);
1069 		cmd |= FLAG_CF;
1070 		ehci_writel(&ctrl->hcor->or_configflag, cmd);
1071 	}
1072 
1073 	/* unblock posted write */
1074 	cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
1075 	mdelay(5);
1076 	reg = HC_VERSION(ehci_readl(&ctrl->hccr->cr_capbase));
1077 	printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
1078 
1079 	return 0;
1080 }
1081 
1082 #if !CONFIG_IS_ENABLED(DM_USB)
1083 int usb_lowlevel_stop(int index)
1084 {
1085 	ehci_shutdown(&ehcic[index]);
1086 	return ehci_hcd_stop(index);
1087 }
1088 
1089 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
1090 {
1091 	struct ehci_ctrl *ctrl = &ehcic[index];
1092 	uint tweaks = 0;
1093 	int rc;
1094 
1095 	/**
1096 	 * Set ops to default_ehci_ops, ehci_hcd_init should call
1097 	 * ehci_set_controller_priv to change any of these function pointers.
1098 	 */
1099 	ctrl->ops = default_ehci_ops;
1100 
1101 	rc = ehci_hcd_init(index, init, &ctrl->hccr, &ctrl->hcor);
1102 	if (rc)
1103 		return rc;
1104 	if (!ctrl->hccr || !ctrl->hcor)
1105 		return -1;
1106 	if (init == USB_INIT_DEVICE)
1107 		goto done;
1108 
1109 	/* EHCI spec section 4.1 */
1110 	if (ehci_reset(ctrl))
1111 		return -1;
1112 
1113 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
1114 	rc = ehci_hcd_init(index, init, &ctrl->hccr, &ctrl->hcor);
1115 	if (rc)
1116 		return rc;
1117 #endif
1118 #ifdef CONFIG_USB_EHCI_FARADAY
1119 	tweaks |= EHCI_TWEAK_NO_INIT_CF;
1120 #endif
1121 	rc = ehci_common_init(ctrl, tweaks);
1122 	if (rc)
1123 		return rc;
1124 
1125 	ctrl->rootdev = 0;
1126 done:
1127 	*controller = &ehcic[index];
1128 	return 0;
1129 }
1130 #endif
1131 
1132 static int _ehci_submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
1133 				 void *buffer, int length)
1134 {
1135 
1136 	if (usb_pipetype(pipe) != PIPE_BULK) {
1137 		debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
1138 		return -1;
1139 	}
1140 	return ehci_submit_async(dev, pipe, buffer, length, NULL);
1141 }
1142 
1143 static int _ehci_submit_control_msg(struct usb_device *dev, unsigned long pipe,
1144 				    void *buffer, int length,
1145 				    struct devrequest *setup)
1146 {
1147 	struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1148 
1149 	if (usb_pipetype(pipe) != PIPE_CONTROL) {
1150 		debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
1151 		return -1;
1152 	}
1153 
1154 	if (usb_pipedevice(pipe) == ctrl->rootdev) {
1155 		if (!ctrl->rootdev)
1156 			dev->speed = USB_SPEED_HIGH;
1157 		return ehci_submit_root(dev, pipe, buffer, length, setup);
1158 	}
1159 	return ehci_submit_async(dev, pipe, buffer, length, setup);
1160 }
1161 
1162 struct int_queue {
1163 	int elementsize;
1164 	unsigned long pipe;
1165 	struct QH *first;
1166 	struct QH *current;
1167 	struct QH *last;
1168 	struct qTD *tds;
1169 };
1170 
1171 #define NEXT_QH(qh) (struct QH *)((unsigned long)hc32_to_cpu((qh)->qh_link) & ~0x1f)
1172 
1173 static int
1174 enable_periodic(struct ehci_ctrl *ctrl)
1175 {
1176 	uint32_t cmd;
1177 	struct ehci_hcor *hcor = ctrl->hcor;
1178 	int ret;
1179 
1180 	cmd = ehci_readl(&hcor->or_usbcmd);
1181 	cmd |= CMD_PSE;
1182 	ehci_writel(&hcor->or_usbcmd, cmd);
1183 
1184 	ret = handshake((uint32_t *)&hcor->or_usbsts,
1185 			STS_PSS, STS_PSS, 100 * 1000);
1186 	if (ret < 0) {
1187 		printf("EHCI failed: timeout when enabling periodic list\n");
1188 		return -ETIMEDOUT;
1189 	}
1190 	udelay(1000);
1191 	return 0;
1192 }
1193 
1194 static int
1195 disable_periodic(struct ehci_ctrl *ctrl)
1196 {
1197 	uint32_t cmd;
1198 	struct ehci_hcor *hcor = ctrl->hcor;
1199 	int ret;
1200 
1201 	cmd = ehci_readl(&hcor->or_usbcmd);
1202 	cmd &= ~CMD_PSE;
1203 	ehci_writel(&hcor->or_usbcmd, cmd);
1204 
1205 	ret = handshake((uint32_t *)&hcor->or_usbsts,
1206 			STS_PSS, 0, 100 * 1000);
1207 	if (ret < 0) {
1208 		printf("EHCI failed: timeout when disabling periodic list\n");
1209 		return -ETIMEDOUT;
1210 	}
1211 	return 0;
1212 }
1213 
1214 static struct int_queue *_ehci_create_int_queue(struct usb_device *dev,
1215 			unsigned long pipe, int queuesize, int elementsize,
1216 			void *buffer, int interval)
1217 {
1218 	struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1219 	struct int_queue *result = NULL;
1220 	uint32_t i, toggle;
1221 
1222 	/*
1223 	 * Interrupt transfers requiring several transactions are not supported
1224 	 * because bInterval is ignored.
1225 	 *
1226 	 * Also, ehci_submit_async() relies on wMaxPacketSize being a power of 2
1227 	 * <= PKT_ALIGN if several qTDs are required, while the USB
1228 	 * specification does not constrain this for interrupt transfers. That
1229 	 * means that ehci_submit_async() would support interrupt transfers
1230 	 * requiring several transactions only as long as the transfer size does
1231 	 * not require more than a single qTD.
1232 	 */
1233 	if (elementsize > usb_maxpacket(dev, pipe)) {
1234 		printf("%s: xfers requiring several transactions are not supported.\n",
1235 		       __func__);
1236 		return NULL;
1237 	}
1238 
1239 	debug("Enter create_int_queue\n");
1240 	if (usb_pipetype(pipe) != PIPE_INTERRUPT) {
1241 		debug("non-interrupt pipe (type=%lu)", usb_pipetype(pipe));
1242 		return NULL;
1243 	}
1244 
1245 	/* limit to 4 full pages worth of data -
1246 	 * we can safely fit them in a single TD,
1247 	 * no matter the alignment
1248 	 */
1249 	if (elementsize >= 16384) {
1250 		debug("too large elements for interrupt transfers\n");
1251 		return NULL;
1252 	}
1253 
1254 	result = malloc(sizeof(*result));
1255 	if (!result) {
1256 		debug("ehci intr queue: out of memory\n");
1257 		goto fail1;
1258 	}
1259 	result->elementsize = elementsize;
1260 	result->pipe = pipe;
1261 	result->first = memalign(USB_DMA_MINALIGN,
1262 				 sizeof(struct QH) * queuesize);
1263 	if (!result->first) {
1264 		debug("ehci intr queue: out of memory\n");
1265 		goto fail2;
1266 	}
1267 	result->current = result->first;
1268 	result->last = result->first + queuesize - 1;
1269 	result->tds = memalign(USB_DMA_MINALIGN,
1270 			       sizeof(struct qTD) * queuesize);
1271 	if (!result->tds) {
1272 		debug("ehci intr queue: out of memory\n");
1273 		goto fail3;
1274 	}
1275 	memset(result->first, 0, sizeof(struct QH) * queuesize);
1276 	memset(result->tds, 0, sizeof(struct qTD) * queuesize);
1277 
1278 	toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
1279 
1280 	for (i = 0; i < queuesize; i++) {
1281 		struct QH *qh = result->first + i;
1282 		struct qTD *td = result->tds + i;
1283 		void **buf = &qh->buffer;
1284 
1285 		qh->qh_link = cpu_to_hc32((unsigned long)(qh+1) | QH_LINK_TYPE_QH);
1286 		if (i == queuesize - 1)
1287 			qh->qh_link = cpu_to_hc32(QH_LINK_TERMINATE);
1288 
1289 		qh->qh_overlay.qt_next = cpu_to_hc32((unsigned long)td);
1290 		qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1291 		qh->qh_endpt1 =
1292 			cpu_to_hc32((0 << 28) | /* No NAK reload (ehci 4.9) */
1293 			(usb_maxpacket(dev, pipe) << 16) | /* MPS */
1294 			(1 << 14) |
1295 			QH_ENDPT1_EPS(ehci_encode_speed(dev->speed)) |
1296 			(usb_pipeendpoint(pipe) << 8) | /* Endpoint Number */
1297 			(usb_pipedevice(pipe) << 0));
1298 		qh->qh_endpt2 = cpu_to_hc32((1 << 30) | /* 1 Tx per mframe */
1299 			(1 << 0)); /* S-mask: microframe 0 */
1300 		if (dev->speed == USB_SPEED_LOW ||
1301 				dev->speed == USB_SPEED_FULL) {
1302 			/* C-mask: microframes 2-4 */
1303 			qh->qh_endpt2 |= cpu_to_hc32((0x1c << 8));
1304 		}
1305 		ehci_update_endpt2_dev_n_port(dev, qh);
1306 
1307 		td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
1308 		td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
1309 		debug("communication direction is '%s'\n",
1310 		      usb_pipein(pipe) ? "in" : "out");
1311 		td->qt_token = cpu_to_hc32(
1312 			QT_TOKEN_DT(toggle) |
1313 			(elementsize << 16) |
1314 			((usb_pipein(pipe) ? 1 : 0) << 8) | /* IN/OUT token */
1315 			0x80); /* active */
1316 		td->qt_buffer[0] =
1317 		    cpu_to_hc32((unsigned long)buffer + i * elementsize);
1318 		td->qt_buffer[1] =
1319 		    cpu_to_hc32((td->qt_buffer[0] + 0x1000) & ~0xfff);
1320 		td->qt_buffer[2] =
1321 		    cpu_to_hc32((td->qt_buffer[0] + 0x2000) & ~0xfff);
1322 		td->qt_buffer[3] =
1323 		    cpu_to_hc32((td->qt_buffer[0] + 0x3000) & ~0xfff);
1324 		td->qt_buffer[4] =
1325 		    cpu_to_hc32((td->qt_buffer[0] + 0x4000) & ~0xfff);
1326 
1327 		*buf = buffer + i * elementsize;
1328 		toggle ^= 1;
1329 	}
1330 
1331 	flush_dcache_range((unsigned long)buffer,
1332 			   ALIGN_END_ADDR(char, buffer,
1333 					  queuesize * elementsize));
1334 	flush_dcache_range((unsigned long)result->first,
1335 			   ALIGN_END_ADDR(struct QH, result->first,
1336 					  queuesize));
1337 	flush_dcache_range((unsigned long)result->tds,
1338 			   ALIGN_END_ADDR(struct qTD, result->tds,
1339 					  queuesize));
1340 
1341 	if (ctrl->periodic_schedules > 0) {
1342 		if (disable_periodic(ctrl) < 0) {
1343 			debug("FATAL: periodic should never fail, but did");
1344 			goto fail3;
1345 		}
1346 	}
1347 
1348 	/* hook up to periodic list */
1349 	struct QH *list = &ctrl->periodic_queue;
1350 	result->last->qh_link = list->qh_link;
1351 	list->qh_link = cpu_to_hc32((unsigned long)result->first | QH_LINK_TYPE_QH);
1352 
1353 	flush_dcache_range((unsigned long)result->last,
1354 			   ALIGN_END_ADDR(struct QH, result->last, 1));
1355 	flush_dcache_range((unsigned long)list,
1356 			   ALIGN_END_ADDR(struct QH, list, 1));
1357 
1358 	if (enable_periodic(ctrl) < 0) {
1359 		debug("FATAL: periodic should never fail, but did");
1360 		goto fail3;
1361 	}
1362 	ctrl->periodic_schedules++;
1363 
1364 	debug("Exit create_int_queue\n");
1365 	return result;
1366 fail3:
1367 	if (result->tds)
1368 		free(result->tds);
1369 fail2:
1370 	if (result->first)
1371 		free(result->first);
1372 	if (result)
1373 		free(result);
1374 fail1:
1375 	return NULL;
1376 }
1377 
1378 static void *_ehci_poll_int_queue(struct usb_device *dev,
1379 				  struct int_queue *queue)
1380 {
1381 	struct QH *cur = queue->current;
1382 	struct qTD *cur_td;
1383 	uint32_t token, toggle;
1384 	unsigned long pipe = queue->pipe;
1385 
1386 	/* depleted queue */
1387 	if (cur == NULL) {
1388 		debug("Exit poll_int_queue with completed queue\n");
1389 		return NULL;
1390 	}
1391 	/* still active */
1392 	cur_td = &queue->tds[queue->current - queue->first];
1393 	invalidate_dcache_range((unsigned long)cur_td,
1394 				ALIGN_END_ADDR(struct qTD, cur_td, 1));
1395 	token = hc32_to_cpu(cur_td->qt_token);
1396 	if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE) {
1397 		debug("Exit poll_int_queue with no completed intr transfer. token is %x\n", token);
1398 		return NULL;
1399 	}
1400 
1401 	toggle = QT_TOKEN_GET_DT(token);
1402 	usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), toggle);
1403 
1404 	if (!(cur->qh_link & QH_LINK_TERMINATE))
1405 		queue->current++;
1406 	else
1407 		queue->current = NULL;
1408 
1409 	invalidate_dcache_range((unsigned long)cur->buffer,
1410 				ALIGN_END_ADDR(char, cur->buffer,
1411 					       queue->elementsize));
1412 
1413 	debug("Exit poll_int_queue with completed intr transfer. token is %x at %p (first at %p)\n",
1414 	      token, cur, queue->first);
1415 	return cur->buffer;
1416 }
1417 
1418 /* Do not free buffers associated with QHs, they're owned by someone else */
1419 static int _ehci_destroy_int_queue(struct usb_device *dev,
1420 				   struct int_queue *queue)
1421 {
1422 	struct ehci_ctrl *ctrl = ehci_get_ctrl(dev);
1423 	int result = -1;
1424 	unsigned long timeout;
1425 
1426 	if (disable_periodic(ctrl) < 0) {
1427 		debug("FATAL: periodic should never fail, but did");
1428 		goto out;
1429 	}
1430 	ctrl->periodic_schedules--;
1431 
1432 	struct QH *cur = &ctrl->periodic_queue;
1433 	timeout = get_timer(0) + 500; /* abort after 500ms */
1434 	while (!(cur->qh_link & cpu_to_hc32(QH_LINK_TERMINATE))) {
1435 		debug("considering %p, with qh_link %x\n", cur, cur->qh_link);
1436 		if (NEXT_QH(cur) == queue->first) {
1437 			debug("found candidate. removing from chain\n");
1438 			cur->qh_link = queue->last->qh_link;
1439 			flush_dcache_range((unsigned long)cur,
1440 					   ALIGN_END_ADDR(struct QH, cur, 1));
1441 			result = 0;
1442 			break;
1443 		}
1444 		cur = NEXT_QH(cur);
1445 		if (get_timer(0) > timeout) {
1446 			printf("Timeout destroying interrupt endpoint queue\n");
1447 			result = -1;
1448 			goto out;
1449 		}
1450 	}
1451 
1452 	if (ctrl->periodic_schedules > 0) {
1453 		result = enable_periodic(ctrl);
1454 		if (result < 0)
1455 			debug("FATAL: periodic should never fail, but did");
1456 	}
1457 
1458 out:
1459 	free(queue->tds);
1460 	free(queue->first);
1461 	free(queue);
1462 
1463 	return result;
1464 }
1465 
1466 static int _ehci_submit_int_msg(struct usb_device *dev, unsigned long pipe,
1467 				void *buffer, int length, int interval,
1468 				bool nonblock)
1469 {
1470 	void *backbuffer;
1471 	struct int_queue *queue;
1472 	unsigned long timeout;
1473 	int result = 0, ret;
1474 
1475 	debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
1476 	      dev, pipe, buffer, length, interval);
1477 
1478 	queue = _ehci_create_int_queue(dev, pipe, 1, length, buffer, interval);
1479 	if (!queue)
1480 		return -1;
1481 
1482 	timeout = get_timer(0) + USB_TIMEOUT_MS(pipe);
1483 	while ((backbuffer = _ehci_poll_int_queue(dev, queue)) == NULL)
1484 		if (get_timer(0) > timeout) {
1485 			printf("Timeout poll on interrupt endpoint\n");
1486 			result = -ETIMEDOUT;
1487 			break;
1488 		}
1489 
1490 	if (backbuffer != buffer) {
1491 		debug("got wrong buffer back (%p instead of %p)\n",
1492 		      backbuffer, buffer);
1493 		return -EINVAL;
1494 	}
1495 
1496 	ret = _ehci_destroy_int_queue(dev, queue);
1497 	if (ret < 0)
1498 		return ret;
1499 
1500 	/* everything worked out fine */
1501 	return result;
1502 }
1503 
1504 #if !CONFIG_IS_ENABLED(DM_USB)
1505 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
1506 			    void *buffer, int length)
1507 {
1508 	return _ehci_submit_bulk_msg(dev, pipe, buffer, length);
1509 }
1510 
1511 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1512 		   int length, struct devrequest *setup)
1513 {
1514 	return _ehci_submit_control_msg(dev, pipe, buffer, length, setup);
1515 }
1516 
1517 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
1518 		   void *buffer, int length, int interval, bool nonblock)
1519 {
1520 	return _ehci_submit_int_msg(dev, pipe, buffer, length, interval,
1521 				    nonblock);
1522 }
1523 
1524 struct int_queue *create_int_queue(struct usb_device *dev,
1525 		unsigned long pipe, int queuesize, int elementsize,
1526 		void *buffer, int interval)
1527 {
1528 	return _ehci_create_int_queue(dev, pipe, queuesize, elementsize,
1529 				      buffer, interval);
1530 }
1531 
1532 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
1533 {
1534 	return _ehci_poll_int_queue(dev, queue);
1535 }
1536 
1537 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
1538 {
1539 	return _ehci_destroy_int_queue(dev, queue);
1540 }
1541 #endif
1542 
1543 #if CONFIG_IS_ENABLED(DM_USB)
1544 static int ehci_submit_control_msg(struct udevice *dev, struct usb_device *udev,
1545 				   unsigned long pipe, void *buffer, int length,
1546 				   struct devrequest *setup)
1547 {
1548 	debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__,
1549 	      dev->name, udev, udev->dev->name, udev->portnr);
1550 
1551 	return _ehci_submit_control_msg(udev, pipe, buffer, length, setup);
1552 }
1553 
1554 static int ehci_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
1555 				unsigned long pipe, void *buffer, int length)
1556 {
1557 	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
1558 	return _ehci_submit_bulk_msg(udev, pipe, buffer, length);
1559 }
1560 
1561 static int ehci_submit_int_msg(struct udevice *dev, struct usb_device *udev,
1562 			       unsigned long pipe, void *buffer, int length,
1563 			       int interval, bool nonblock)
1564 {
1565 	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
1566 	return _ehci_submit_int_msg(udev, pipe, buffer, length, interval,
1567 				    nonblock);
1568 }
1569 
1570 static struct int_queue *ehci_create_int_queue(struct udevice *dev,
1571 		struct usb_device *udev, unsigned long pipe, int queuesize,
1572 		int elementsize, void *buffer, int interval)
1573 {
1574 	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
1575 	return _ehci_create_int_queue(udev, pipe, queuesize, elementsize,
1576 				      buffer, interval);
1577 }
1578 
1579 static void *ehci_poll_int_queue(struct udevice *dev, struct usb_device *udev,
1580 				 struct int_queue *queue)
1581 {
1582 	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
1583 	return _ehci_poll_int_queue(udev, queue);
1584 }
1585 
1586 static int ehci_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
1587 				  struct int_queue *queue)
1588 {
1589 	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
1590 	return _ehci_destroy_int_queue(udev, queue);
1591 }
1592 
1593 static int ehci_get_max_xfer_size(struct udevice *dev, size_t *size)
1594 {
1595 	/*
1596 	 * EHCD can handle any transfer length as long as there is enough
1597 	 * free heap space left, hence set the theoretical max number here.
1598 	 */
1599 	*size = SIZE_MAX;
1600 
1601 	return 0;
1602 }
1603 
1604 int ehci_register(struct udevice *dev, struct ehci_hccr *hccr,
1605 		  struct ehci_hcor *hcor, const struct ehci_ops *ops,
1606 		  uint tweaks, enum usb_init_type init)
1607 {
1608 	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
1609 	struct ehci_ctrl *ctrl = dev_get_priv(dev);
1610 	int ret = -1;
1611 
1612 	debug("%s: dev='%s', ctrl=%p, hccr=%p, hcor=%p, init=%d\n", __func__,
1613 	      dev->name, ctrl, hccr, hcor, init);
1614 
1615 	if (!ctrl || !hccr || !hcor)
1616 		goto err;
1617 
1618 	priv->desc_before_addr = true;
1619 
1620 	ehci_setup_ops(ctrl, ops);
1621 	ctrl->hccr = hccr;
1622 	ctrl->hcor = hcor;
1623 	ctrl->priv = ctrl;
1624 
1625 	ctrl->init = init;
1626 	if (ctrl->init == USB_INIT_DEVICE)
1627 		goto done;
1628 
1629 	ret = ehci_reset(ctrl);
1630 	if (ret)
1631 		goto err;
1632 
1633 	if (ctrl->ops.init_after_reset) {
1634 		ret = ctrl->ops.init_after_reset(ctrl);
1635 		if (ret)
1636 			goto err;
1637 	}
1638 
1639 	ret = ehci_common_init(ctrl, tweaks);
1640 	if (ret)
1641 		goto err;
1642 done:
1643 	return 0;
1644 err:
1645 	free(ctrl);
1646 	debug("%s: failed, ret=%d\n", __func__, ret);
1647 	return ret;
1648 }
1649 
1650 int ehci_deregister(struct udevice *dev)
1651 {
1652 	struct ehci_ctrl *ctrl = dev_get_priv(dev);
1653 
1654 	if (ctrl->init == USB_INIT_DEVICE)
1655 		return 0;
1656 
1657 	ehci_shutdown(ctrl);
1658 
1659 	return 0;
1660 }
1661 
1662 struct dm_usb_ops ehci_usb_ops = {
1663 	.control = ehci_submit_control_msg,
1664 	.bulk = ehci_submit_bulk_msg,
1665 	.interrupt = ehci_submit_int_msg,
1666 	.create_int_queue = ehci_create_int_queue,
1667 	.poll_int_queue = ehci_poll_int_queue,
1668 	.destroy_int_queue = ehci_destroy_int_queue,
1669 	.get_max_xfer_size  = ehci_get_max_xfer_size,
1670 };
1671 
1672 #endif
1673 
1674 #ifdef CONFIG_PHY
1675 int ehci_setup_phy(struct udevice *dev, struct phy *phy, int index)
1676 {
1677 	int ret;
1678 
1679 	if (!phy)
1680 		return 0;
1681 
1682 	ret = generic_phy_get_by_index(dev, index, phy);
1683 	if (ret) {
1684 		if (ret != -ENOENT) {
1685 			dev_err(dev, "failed to get usb phy\n");
1686 			return ret;
1687 		}
1688 	} else {
1689 		ret = generic_phy_init(phy);
1690 		if (ret) {
1691 			dev_err(dev, "failed to init usb phy\n");
1692 			return ret;
1693 		}
1694 
1695 		ret = generic_phy_power_on(phy);
1696 		if (ret) {
1697 			dev_err(dev, "failed to power on usb phy\n");
1698 			return generic_phy_exit(phy);
1699 		}
1700 	}
1701 
1702 	return 0;
1703 }
1704 
1705 int ehci_shutdown_phy(struct udevice *dev, struct phy *phy)
1706 {
1707 	int ret = 0;
1708 
1709 	if (!phy)
1710 		return 0;
1711 
1712 	if (generic_phy_valid(phy)) {
1713 		ret = generic_phy_power_off(phy);
1714 		if (ret) {
1715 			dev_err(dev, "failed to power off usb phy\n");
1716 			return ret;
1717 		}
1718 
1719 		ret = generic_phy_exit(phy);
1720 		if (ret) {
1721 			dev_err(dev, "failed to power off usb phy\n");
1722 			return ret;
1723 		}
1724 	}
1725 
1726 	return 0;
1727 }
1728 #else
1729 int ehci_setup_phy(struct udevice *dev, struct phy *phy, int index)
1730 {
1731 	return 0;
1732 }
1733 
1734 int ehci_shutdown_phy(struct udevice *dev, struct phy *phy)
1735 {
1736 	return 0;
1737 }
1738 #endif
1739