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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenkaffae2b2002-08-17 09:36:01 +00002/*
wdenkaffae2b2002-08-17 09:36:01 +00003 * Most of this source has been derived from the Linux USB
Wolfgang Denk460c3222005-08-04 01:14:12 +02004 * project:
5 * (C) Copyright Linus Torvalds 1999
6 * (C) Copyright Johannes Erdfelt 1999-2001
7 * (C) Copyright Andreas Gal 1999
8 * (C) Copyright Gregory P. Smith 1999
9 * (C) Copyright Deti Fliegl 1999 (new USB architecture)
10 * (C) Copyright Randy Dunlap 2000
11 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
12 * (C) Copyright Yggdrasil Computing, Inc. 2000
13 * (usb_device_id matching changes by Adam J. Richter)
14 *
15 * Adapted for U-Boot:
16 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
wdenkaffae2b2002-08-17 09:36:01 +000017 */
18
wdenkaffae2b2002-08-17 09:36:01 +000019/*
20 * How it works:
21 *
22 * Since this is a bootloader, the devices will not be automatic
23 * (re)configured on hotplug, but after a restart of the USB the
24 * device should work.
25 *
26 * For each transfer (except "Interrupt") we wait for completion.
27 */
28#include <common.h>
29#include <command.h>
Simon Glass95fbfe42015-03-25 12:22:08 -060030#include <dm.h>
Simon Glasscf92e052015-09-02 17:24:58 -060031#include <memalign.h>
wdenkaffae2b2002-08-17 09:36:01 +000032#include <asm/processor.h>
Mike Frysinger66cf6412012-04-04 18:44:53 +000033#include <linux/compiler.h>
Wolfgang Denk9c998aa2005-07-21 11:57:57 +020034#include <linux/ctype.h>
Christian Eggersc9182612008-05-21 22:12:00 +020035#include <asm/byteorder.h>
Tom Rinib2fb47f2011-12-15 08:40:51 -070036#include <asm/unaligned.h>
Marek Vasut97b9eb92014-08-01 03:09:53 +020037#include <errno.h>
wdenkaffae2b2002-08-17 09:36:01 +000038#include <usb.h>
wdenkaffae2b2002-08-17 09:36:01 +000039
wdenkcd0a9de2004-02-23 20:48:38 +000040#define USB_BUFSIZ 512
41
Simon Glass95fbfe42015-03-25 12:22:08 -060042static int asynch_allowed;
43char usb_started; /* flag for the started/stopped USB status */
44
Sven Schwermerfd09c202018-11-21 08:43:56 +010045#if !CONFIG_IS_ENABLED(DM_USB)
wdenkaffae2b2002-08-17 09:36:01 +000046static struct usb_device usb_dev[USB_MAX_DEVICE];
47static int dev_index;
Bartlomiej Siekae51aae32006-08-03 23:20:13 +020048
Lucas Stach93c25822012-09-26 00:14:36 +020049#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
50#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
51#endif
wdenkaffae2b2002-08-17 09:36:01 +000052
wdenkaffae2b2002-08-17 09:36:01 +000053/***************************************************************************
54 * Init USB Device
55 */
wdenkaffae2b2002-08-17 09:36:01 +000056int usb_init(void)
57{
Lucas Stach93c25822012-09-26 00:14:36 +020058 void *ctrl;
59 struct usb_device *dev;
60 int i, start_index = 0;
Hans de Goeded906bbc2015-01-11 20:34:46 +010061 int controllers_initialized = 0;
Marek Vasut97b9eb92014-08-01 03:09:53 +020062 int ret;
wdenkaffae2b2002-08-17 09:36:01 +000063
Remy Bohmer6f5794a2008-09-16 14:55:43 +020064 dev_index = 0;
65 asynch_allowed = 1;
wdenkaffae2b2002-08-17 09:36:01 +000066 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +020067
68 /* first make all devices unknown */
69 for (i = 0; i < USB_MAX_DEVICE; i++) {
70 memset(&usb_dev[i], 0, sizeof(struct usb_device));
71 usb_dev[i].devnum = -1;
72 }
73
wdenkaffae2b2002-08-17 09:36:01 +000074 /* init low_level USB */
Lucas Stach93c25822012-09-26 00:14:36 +020075 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
76 /* init low_level USB */
77 printf("USB%d: ", i);
Marek Vasut97b9eb92014-08-01 03:09:53 +020078 ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
79 if (ret == -ENODEV) { /* No such device. */
80 puts("Port not available.\n");
Hans de Goeded906bbc2015-01-11 20:34:46 +010081 controllers_initialized++;
Marek Vasut97b9eb92014-08-01 03:09:53 +020082 continue;
83 }
84
85 if (ret) { /* Other error. */
Lucas Stach93c25822012-09-26 00:14:36 +020086 puts("lowlevel init failed\n");
87 continue;
88 }
89 /*
90 * lowlevel init is OK, now scan the bus for devices
91 * i.e. search HUBs and configure them
92 */
Hans de Goeded906bbc2015-01-11 20:34:46 +010093 controllers_initialized++;
Lucas Stach93c25822012-09-26 00:14:36 +020094 start_index = dev_index;
95 printf("scanning bus %d for devices... ", i);
Simon Glass79b58882015-03-25 12:22:01 -060096 ret = usb_alloc_new_device(ctrl, &dev);
97 if (ret)
Paul Kocialkowski8879be82015-04-04 15:12:28 +020098 break;
99
Lucas Stach93c25822012-09-26 00:14:36 +0200100 /*
101 * device 0 is always present
102 * (root hub, so let it analyze)
103 */
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200104 ret = usb_new_device(dev);
105 if (ret)
Simon Glass79b58882015-03-25 12:22:01 -0600106 usb_free_device(dev->controller);
Lucas Stach93c25822012-09-26 00:14:36 +0200107
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200108 if (start_index == dev_index) {
Lucas Stach93c25822012-09-26 00:14:36 +0200109 puts("No USB Device found\n");
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200110 continue;
111 } else {
Lucas Stach93c25822012-09-26 00:14:36 +0200112 printf("%d USB Device(s) found\n",
113 dev_index - start_index);
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200114 }
Lucas Stach93c25822012-09-26 00:14:36 +0200115
Bartlomiej Siekae51aae32006-08-03 23:20:13 +0200116 usb_started = 1;
Lucas Stach93c25822012-09-26 00:14:36 +0200117 }
118
Vivek Gautamceb49722013-04-12 16:34:33 +0530119 debug("scan end\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200120 /* if we were not able to find at least one working bus, bail out */
Hans de Goeded906bbc2015-01-11 20:34:46 +0100121 if (controllers_initialized == 0)
Lucas Stach93c25822012-09-26 00:14:36 +0200122 puts("USB error: all controllers failed lowlevel init\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200123
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200124 return usb_started ? 0 : -ENODEV;
wdenkaffae2b2002-08-17 09:36:01 +0000125}
126
127/******************************************************************************
128 * Stop USB this stops the LowLevel Part and deregisters USB devices.
129 */
130int usb_stop(void)
131{
Lucas Stach93c25822012-09-26 00:14:36 +0200132 int i;
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200133
134 if (usb_started) {
135 asynch_allowed = 1;
136 usb_started = 0;
137 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +0200138
139 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
140 if (usb_lowlevel_stop(i))
141 printf("failed to stop USB controller %d\n", i);
142 }
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200143 }
Lucas Stach93c25822012-09-26 00:14:36 +0200144
145 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000146}
147
Vincent Palatin08f3bb02015-05-04 11:30:54 -0600148/******************************************************************************
149 * Detect if a USB device has been plugged or unplugged.
150 */
151int usb_detect_change(void)
152{
153 int i, j;
154 int change = 0;
155
156 for (j = 0; j < USB_MAX_DEVICE; j++) {
157 for (i = 0; i < usb_dev[j].maxchild; i++) {
158 struct usb_port_status status;
159
160 if (usb_get_port_status(&usb_dev[j], i + 1,
161 &status) < 0)
162 /* USB request failed */
163 continue;
164
165 if (le16_to_cpu(status.wPortChange) &
166 USB_PORT_STAT_C_CONNECTION)
167 change++;
168 }
169 }
170
171 return change;
172}
173
wdenkaffae2b2002-08-17 09:36:01 +0000174/*
175 * disables the asynch behaviour of the control message. This is used for data
176 * transfers that uses the exclusiv access to the control and bulk messages.
Simon Glass89d48362011-02-16 11:14:33 -0800177 * Returns the old value so it can be restored later.
wdenkaffae2b2002-08-17 09:36:01 +0000178 */
Simon Glass89d48362011-02-16 11:14:33 -0800179int usb_disable_asynch(int disable)
wdenkaffae2b2002-08-17 09:36:01 +0000180{
Simon Glass89d48362011-02-16 11:14:33 -0800181 int old_value = asynch_allowed;
182
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200183 asynch_allowed = !disable;
Simon Glass89d48362011-02-16 11:14:33 -0800184 return old_value;
wdenkaffae2b2002-08-17 09:36:01 +0000185}
Sven Schwermerfd09c202018-11-21 08:43:56 +0100186#endif /* !CONFIG_IS_ENABLED(DM_USB) */
wdenkaffae2b2002-08-17 09:36:01 +0000187
188
189/*-------------------------------------------------------------------
190 * Message wrappers.
191 *
192 */
193
194/*
Michal Suchanek34371212019-08-18 10:55:27 +0200195 * submits an Interrupt Message. Some drivers may implement non-blocking
196 * polling: when non-block is true and the device is not responding return
197 * -EAGAIN instead of waiting for device to respond.
wdenkaffae2b2002-08-17 09:36:01 +0000198 */
Michal Suchanekfdd135b2019-08-18 10:55:25 +0200199int usb_int_msg(struct usb_device *dev, unsigned long pipe,
Michal Suchanek34371212019-08-18 10:55:27 +0200200 void *buffer, int transfer_len, int interval, bool nonblock)
wdenkaffae2b2002-08-17 09:36:01 +0000201{
Michal Suchanek34371212019-08-18 10:55:27 +0200202 return submit_int_msg(dev, pipe, buffer, transfer_len, interval,
203 nonblock);
wdenkaffae2b2002-08-17 09:36:01 +0000204}
205
206/*
207 * submits a control message and waits for comletion (at least timeout * 1ms)
208 * If timeout is 0, we don't wait for completion (used as example to set and
209 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
210 * allow control messages with 0 timeout, by previousely resetting the flag
211 * asynch_allowed (usb_disable_asynch(1)).
Vagrant Cascadiana6f70a32016-03-15 12:16:39 -0700212 * returns the transferred length if OK or -1 if error. The transferred length
wdenkaffae2b2002-08-17 09:36:01 +0000213 * and the current status are stored in the dev->act_len and dev->status.
214 */
215int usb_control_msg(struct usb_device *dev, unsigned int pipe,
216 unsigned char request, unsigned char requesttype,
217 unsigned short value, unsigned short index,
218 void *data, unsigned short size, int timeout)
219{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530220 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Hans de Goede651d95c2015-05-10 14:10:14 +0200221 int err;
Marek Vasute159e482012-02-13 18:58:18 +0000222
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200223 if ((timeout == 0) && (!asynch_allowed)) {
224 /* request for a asynch control pipe is not allowed */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200225 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200226 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200227
wdenkaffae2b2002-08-17 09:36:01 +0000228 /* set setup command */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530229 setup_packet->requesttype = requesttype;
230 setup_packet->request = request;
231 setup_packet->value = cpu_to_le16(value);
232 setup_packet->index = cpu_to_le16(index);
233 setup_packet->length = cpu_to_le16(size);
Vivek Gautamceb49722013-04-12 16:34:33 +0530234 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
235 "value 0x%X index 0x%X length 0x%X\n",
236 request, requesttype, value, index, size);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200237 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000238
Hans de Goede651d95c2015-05-10 14:10:14 +0200239 err = submit_control_msg(dev, pipe, data, size, setup_packet);
240 if (err < 0)
241 return err;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200242 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000243 return (int)size;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200244
Remy Bohmer84d36b32010-02-01 19:40:47 +0100245 /*
246 * Wait for status to update until timeout expires, USB driver
247 * interrupt handler may set the status when the USB operation has
248 * been completed.
249 */
250 while (timeout--) {
251 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
252 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000253 mdelay(1);
Remy Bohmer48867202008-10-10 10:23:21 +0200254 }
Remy Bohmer84d36b32010-02-01 19:40:47 +0100255 if (dev->status)
256 return -1;
Remy Bohmer48867202008-10-10 10:23:21 +0200257
258 return dev->act_len;
Remy Bohmer84d36b32010-02-01 19:40:47 +0100259
wdenkaffae2b2002-08-17 09:36:01 +0000260}
261
262/*-------------------------------------------------------------------
263 * submits bulk message, and waits for completion. returns 0 if Ok or
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200264 * negative if Error.
wdenkaffae2b2002-08-17 09:36:01 +0000265 * synchronous behavior
266 */
267int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
268 void *data, int len, int *actual_length, int timeout)
269{
270 if (len < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200271 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200272 dev->status = USB_ST_NOT_PROC; /*not yet processed */
Ilya Yanokfd060282012-07-15 04:43:51 +0000273 if (submit_bulk_msg(dev, pipe, data, len) < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200274 return -EIO;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200275 while (timeout--) {
276 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000277 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000278 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000279 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200280 *actual_length = dev->act_len;
281 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000282 return 0;
283 else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200284 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000285}
286
287
288/*-------------------------------------------------------------------
289 * Max Packet stuff
290 */
291
292/*
293 * returns the max packet size, depending on the pipe direction and
294 * the configurations values
295 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200296int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000297{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200298 /* direction is out -> use emaxpacket out */
299 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100300 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000301 else
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100302 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000303}
304
Marek Vasut5e8baf82011-11-05 23:35:12 +0100305/*
306 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmerbe19d322008-09-16 14:55:42 +0200307 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
308 * when it is inlined in 1 single routine. What happens is that the register r3
309 * is used as loop-count 'i', but gets overwritten later on.
310 * This is clearly a compiler bug, but it is easier to workaround it here than
311 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
312 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100313 *
314 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmerbe19d322008-09-16 14:55:42 +0200315 */
Mike Frysinger66cf6412012-04-04 18:44:53 +0000316static void noinline
Marek Vasut5e8baf82011-11-05 23:35:12 +0100317usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmerbe19d322008-09-16 14:55:42 +0200318{
319 int b;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100320 struct usb_endpoint_descriptor *ep;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700321 u16 ep_wMaxPacketSize;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100322
323 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmerbe19d322008-09-16 14:55:42 +0200324
325 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700326 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200327
328 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
329 USB_ENDPOINT_XFER_CONTROL) {
330 /* Control => bidirectional */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700331 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
332 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530333 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
334 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200335 } else {
336 if ((ep->bEndpointAddress & 0x80) == 0) {
337 /* OUT Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700338 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
339 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530340 debug("##EP epmaxpacketout[%d] = %d\n",
341 b, dev->epmaxpacketout[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200342 }
343 } else {
344 /* IN Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700345 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
346 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530347 debug("##EP epmaxpacketin[%d] = %d\n",
348 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200349 }
350 } /* if out */
351 } /* if control */
352}
353
wdenkaffae2b2002-08-17 09:36:01 +0000354/*
355 * set the max packed value of all endpoints in the given configuration
356 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000357static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000358{
Remy Bohmerbe19d322008-09-16 14:55:42 +0200359 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000360
Tom Rix8f8bd562009-10-31 12:37:38 -0500361 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
362 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100363 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000364
wdenkaffae2b2002-08-17 09:36:01 +0000365 return 0;
366}
367
368/*******************************************************************************
369 * Parse the config, located in buffer, and fills the dev->config structure.
370 * Note that all little/big endian swapping are done automatically.
Julius Wernereaf3e612013-07-19 13:12:08 -0700371 * (wTotalLength has already been swapped and sanitized when it was read.)
wdenkaffae2b2002-08-17 09:36:01 +0000372 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000373static int usb_parse_config(struct usb_device *dev,
374 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000375{
376 struct usb_descriptor_header *head;
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200377 int index, ifno, epno, curr_if_num;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700378 u16 ep_wMaxPacketSize;
Vivek Gautam605bd752013-04-12 16:34:34 +0530379 struct usb_interface *if_desc = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000380
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200381 ifno = -1;
382 epno = -1;
383 curr_if_num = -1;
384
385 dev->configno = cfgno;
386 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200387 if (head->bDescriptorType != USB_DT_CONFIG) {
388 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
389 head->bDescriptorType);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200390 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000391 }
Julius Wernereaf3e612013-07-19 13:12:08 -0700392 if (head->bLength != USB_DT_CONFIG_SIZE) {
393 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200394 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700395 }
396 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200397 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000398
Tom Rix8f8bd562009-10-31 12:37:38 -0500399 index = dev->config.desc.bLength;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200400 /* Ok the first entry must be a configuration entry,
401 * now process the others */
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200402 head = (struct usb_descriptor_header *) &buffer[index];
Julius Wernereaf3e612013-07-19 13:12:08 -0700403 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200404 switch (head->bDescriptorType) {
405 case USB_DT_INTERFACE:
Julius Wernereaf3e612013-07-19 13:12:08 -0700406 if (head->bLength != USB_DT_INTERFACE_SIZE) {
407 printf("ERROR: Invalid USB IF length (%d)\n",
408 head->bLength);
409 break;
410 }
411 if (index + USB_DT_INTERFACE_SIZE >
412 dev->config.desc.wTotalLength) {
413 puts("USB IF descriptor overflowed buffer!\n");
414 break;
415 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200416 if (((struct usb_interface_descriptor *) \
Julius Wernereaf3e612013-07-19 13:12:08 -0700417 head)->bInterfaceNumber != curr_if_num) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200418 /* this is a new interface, copy new desc */
419 ifno = dev->config.no_of_if;
Julius Wernereaf3e612013-07-19 13:12:08 -0700420 if (ifno >= USB_MAXINTERFACES) {
421 puts("Too many USB interfaces!\n");
422 /* try to go on with what we have */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200423 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700424 }
Vivek Gautam605bd752013-04-12 16:34:34 +0530425 if_desc = &dev->config.if_desc[ifno];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200426 dev->config.no_of_if++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700427 memcpy(if_desc, head,
428 USB_DT_INTERFACE_SIZE);
Vivek Gautam605bd752013-04-12 16:34:34 +0530429 if_desc->no_of_ep = 0;
430 if_desc->num_altsetting = 1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200431 curr_if_num =
Vivek Gautam605bd752013-04-12 16:34:34 +0530432 if_desc->desc.bInterfaceNumber;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200433 } else {
434 /* found alternate setting for the interface */
Vivek Gautam605bd752013-04-12 16:34:34 +0530435 if (ifno >= 0) {
436 if_desc = &dev->config.if_desc[ifno];
437 if_desc->num_altsetting++;
438 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200439 }
440 break;
441 case USB_DT_ENDPOINT:
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700442 if (head->bLength != USB_DT_ENDPOINT_SIZE &&
443 head->bLength != USB_DT_ENDPOINT_AUDIO_SIZE) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700444 printf("ERROR: Invalid USB EP length (%d)\n",
445 head->bLength);
446 break;
447 }
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700448 if (index + head->bLength >
Julius Wernereaf3e612013-07-19 13:12:08 -0700449 dev->config.desc.wTotalLength) {
450 puts("USB EP descriptor overflowed buffer!\n");
451 break;
452 }
453 if (ifno < 0) {
454 puts("Endpoint descriptor out of order!\n");
455 break;
456 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200457 epno = dev->config.if_desc[ifno].no_of_ep;
Vivek Gautam605bd752013-04-12 16:34:34 +0530458 if_desc = &dev->config.if_desc[ifno];
Peng Fan447b9cd2016-01-12 15:57:01 +0800459 if (epno >= USB_MAXENDPOINTS) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700460 printf("Interface %d has too many endpoints!\n",
461 if_desc->desc.bInterfaceNumber);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200462 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700463 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200464 /* found an endpoint */
Vivek Gautam605bd752013-04-12 16:34:34 +0530465 if_desc->no_of_ep++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700466 memcpy(&if_desc->ep_desc[epno], head,
467 USB_DT_ENDPOINT_SIZE);
Tom Rinib2fb47f2011-12-15 08:40:51 -0700468 ep_wMaxPacketSize = get_unaligned(&dev->config.\
469 if_desc[ifno].\
470 ep_desc[epno].\
471 wMaxPacketSize);
472 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
473 &dev->config.\
474 if_desc[ifno].\
475 ep_desc[epno].\
476 wMaxPacketSize);
Vivek Gautamceb49722013-04-12 16:34:33 +0530477 debug("if %d, ep %d\n", ifno, epno);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200478 break;
Vivek Gautam6497c662013-04-12 16:34:38 +0530479 case USB_DT_SS_ENDPOINT_COMP:
Julius Wernereaf3e612013-07-19 13:12:08 -0700480 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
481 printf("ERROR: Invalid USB EPC length (%d)\n",
482 head->bLength);
483 break;
484 }
485 if (index + USB_DT_SS_EP_COMP_SIZE >
486 dev->config.desc.wTotalLength) {
487 puts("USB EPC descriptor overflowed buffer!\n");
488 break;
489 }
490 if (ifno < 0 || epno < 0) {
491 puts("EPC descriptor out of order!\n");
492 break;
493 }
Vivek Gautam6497c662013-04-12 16:34:38 +0530494 if_desc = &dev->config.if_desc[ifno];
Julius Wernereaf3e612013-07-19 13:12:08 -0700495 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
496 USB_DT_SS_EP_COMP_SIZE);
Vivek Gautam6497c662013-04-12 16:34:38 +0530497 break;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200498 default:
499 if (head->bLength == 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200500 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200501
Vivek Gautamceb49722013-04-12 16:34:33 +0530502 debug("unknown Description Type : %x\n",
503 head->bDescriptorType);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200504
Vivek Gautamceb49722013-04-12 16:34:33 +0530505#ifdef DEBUG
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200506 {
Wolfgang Denkfad2e1b2011-10-05 23:11:19 +0200507 unsigned char *ch = (unsigned char *)head;
Vivek Gautamceb49722013-04-12 16:34:33 +0530508 int i;
509
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200510 for (i = 0; i < head->bLength; i++)
Vivek Gautamceb49722013-04-12 16:34:33 +0530511 debug("%02X ", *ch++);
512 debug("\n\n\n");
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200513 }
Vivek Gautamceb49722013-04-12 16:34:33 +0530514#endif
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200515 break;
wdenkaffae2b2002-08-17 09:36:01 +0000516 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200517 index += head->bLength;
518 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000519 }
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200520 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000521}
522
523/***********************************************************************
524 * Clears an endpoint
525 * endp: endpoint number in bits 0-3;
526 * direction flag in bit 7 (1 = IN, 0 = OUT)
527 */
528int usb_clear_halt(struct usb_device *dev, int pipe)
529{
530 int result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200531 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000532
533 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200534 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
535 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000536
537 /* don't clear if failed */
538 if (result < 0)
539 return result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200540
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200541 /*
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200542 * NOTE: we do not get status and verify reset was successful
543 * as some devices are reported to lock up upon this check..
544 */
545
wdenkaffae2b2002-08-17 09:36:01 +0000546 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200547
wdenkaffae2b2002-08-17 09:36:01 +0000548 /* toggle is reset on clear */
549 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
550 return 0;
551}
552
553
554/**********************************************************************
555 * get_descriptor type
556 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000557static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200558 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000559{
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900560 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
561 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
562 (type << 8) + index, 0, buf, size,
563 USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000564}
565
566/**********************************************************************
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100567 * gets len of configuration cfgno
wdenkaffae2b2002-08-17 09:36:01 +0000568 */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100569int usb_get_configuration_len(struct usb_device *dev, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000570{
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200571 int result;
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100572 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, 9);
Ilya Yanokc60795f2012-11-06 13:48:20 +0000573 struct usb_config_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000574
Ilya Yanokc60795f2012-11-06 13:48:20 +0000575 config = (struct usb_config_descriptor *)&buffer[0];
Remy Bohmer48867202008-10-10 10:23:21 +0200576 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
577 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000578 if (result < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200579 printf("unable to get descriptor, error %lX\n",
580 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000581 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200582 printf("config descriptor too short " \
Remy Bohmer48867202008-10-10 10:23:21 +0200583 "(expected %i, got %i)\n", 9, result);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200584 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000585 }
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100586 return le16_to_cpu(config->wTotalLength);
587}
wdenkaffae2b2002-08-17 09:36:01 +0000588
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100589/**********************************************************************
590 * gets configuration cfgno and store it in the buffer
591 */
592int usb_get_configuration_no(struct usb_device *dev, int cfgno,
593 unsigned char *buffer, int length)
594{
595 int result;
596 struct usb_config_descriptor *config;
wdenkcd0a9de2004-02-23 20:48:38 +0000597
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100598 config = (struct usb_config_descriptor *)&buffer[0];
Julius Wernereaf3e612013-07-19 13:12:08 -0700599 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100600 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result,
601 le16_to_cpu(config->wTotalLength));
602 config->wTotalLength = result; /* validated, with CPU byte order */
Julius Wernereaf3e612013-07-19 13:12:08 -0700603
wdenkaffae2b2002-08-17 09:36:01 +0000604 return result;
605}
606
607/********************************************************************
608 * set address of a device to the value in dev->devnum.
609 * This can only be done by addressing the device via the default address (0)
610 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000611static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000612{
Vivek Gautamceb49722013-04-12 16:34:33 +0530613 debug("set address %d\n", dev->devnum);
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900614
615 return usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS,
616 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000617}
618
619/********************************************************************
620 * set interface number to interface
621 */
622int usb_set_interface(struct usb_device *dev, int interface, int alternate)
623{
Tom Rix8f8bd562009-10-31 12:37:38 -0500624 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000625 int ret, i;
626
Tom Rix8f8bd562009-10-31 12:37:38 -0500627 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
628 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000629 if_face = &dev->config.if_desc[i];
630 break;
631 }
632 }
633 if (!if_face) {
634 printf("selecting invalid interface %d", interface);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200635 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000636 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200637 /*
638 * We should return now for devices with only one alternate setting.
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200639 * According to 9.4.10 of the Universal Serial Bus Specification
640 * Revision 2.0 such devices can return with a STALL. This results in
641 * some USB sticks timeouting during initialization and then being
642 * unusable in U-Boot.
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200643 */
644 if (if_face->num_altsetting == 1)
645 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000646
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200647 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
648 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
649 alternate, interface, NULL, 0,
650 USB_CNTL_TIMEOUT * 5);
651 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000652 return ret;
653
wdenkaffae2b2002-08-17 09:36:01 +0000654 return 0;
655}
656
657/********************************************************************
658 * set configuration number to configuration
659 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000660static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000661{
662 int res;
Vivek Gautamceb49722013-04-12 16:34:33 +0530663 debug("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000664 /* set setup command */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200665 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
666 USB_REQ_SET_CONFIGURATION, 0,
667 configuration, 0,
668 NULL, 0, USB_CNTL_TIMEOUT);
669 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000670 dev->toggle[0] = 0;
671 dev->toggle[1] = 0;
672 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200673 } else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200674 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000675}
676
677/********************************************************************
678 * set protocol to protocol
679 */
680int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
681{
682 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
683 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
684 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
685}
686
687/********************************************************************
688 * set idle
689 */
690int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
691{
692 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
693 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
694 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
695}
696
697/********************************************************************
698 * get report
699 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200700int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
701 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000702{
703 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200704 USB_REQ_GET_REPORT,
705 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
706 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000707}
708
709/********************************************************************
710 * get class descriptor
711 */
712int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
713 unsigned char type, unsigned char id, void *buf, int size)
714{
715 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
716 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
717 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
718}
719
720/********************************************************************
721 * get string index in buffer
722 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000723static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200724 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000725{
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200726 int i;
727 int result;
728
729 for (i = 0; i < 3; ++i) {
730 /* some devices are flaky */
731 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
732 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200733 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200734 USB_CNTL_TIMEOUT);
735
736 if (result > 0)
737 break;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200738 }
739
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200740 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000741}
742
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200743
744static void usb_try_string_workarounds(unsigned char *buf, int *length)
745{
746 int newlength, oldlength = *length;
747
748 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
749 if (!isprint(buf[newlength]) || buf[newlength + 1])
750 break;
751
752 if (newlength > 2) {
753 buf[0] = newlength;
754 *length = newlength;
755 }
756}
757
758
759static int usb_string_sub(struct usb_device *dev, unsigned int langid,
760 unsigned int index, unsigned char *buf)
761{
762 int rc;
763
764 /* Try to read the string descriptor by asking for the maximum
765 * possible number of bytes */
766 rc = usb_get_string(dev, langid, index, buf, 255);
767
768 /* If that failed try to read the descriptor length, then
769 * ask for just that many bytes */
770 if (rc < 2) {
771 rc = usb_get_string(dev, langid, index, buf, 2);
772 if (rc == 2)
773 rc = usb_get_string(dev, langid, index, buf, buf[0]);
774 }
775
776 if (rc >= 2) {
777 if (!buf[0] && !buf[1])
778 usb_try_string_workarounds(buf, &rc);
779
780 /* There might be extra junk at the end of the descriptor */
781 if (buf[0] < rc)
782 rc = buf[0];
783
784 rc = rc - (rc & 1); /* force a multiple of two */
785 }
786
787 if (rc < 2)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200788 rc = -EINVAL;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200789
790 return rc;
791}
792
793
wdenkaffae2b2002-08-17 09:36:01 +0000794/********************************************************************
795 * usb_string:
796 * Get string index and translate it to ascii.
797 * returns string length (> 0) or error (< 0)
798 */
799int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
800{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530801 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000802 unsigned char *tbuf;
803 int err;
804 unsigned int u, idx;
805
806 if (size <= 0 || !buf || !index)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200807 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000808 buf[0] = 0;
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200809 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000810
811 /* get langid for strings if it's not yet known */
812 if (!dev->have_langid) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200813 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000814 if (err < 0) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530815 debug("error getting string descriptor 0 " \
816 "(error=%lx)\n", dev->status);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200817 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000818 } else if (tbuf[0] < 4) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530819 debug("string descriptor 0 too short\n");
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200820 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000821 } else {
822 dev->have_langid = -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200823 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000824 /* always use the first langid listed */
Vivek Gautamceb49722013-04-12 16:34:33 +0530825 debug("USB device number %d default " \
826 "language ID 0x%x\n",
827 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000828 }
829 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200830
831 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000832 if (err < 0)
833 return err;
wdenkcd0a9de2004-02-23 20:48:38 +0000834
wdenkaffae2b2002-08-17 09:36:01 +0000835 size--; /* leave room for trailing NULL char in output buffer */
836 for (idx = 0, u = 2; u < err; u += 2) {
837 if (idx >= size)
838 break;
839 if (tbuf[u+1]) /* high byte */
840 buf[idx++] = '?'; /* non-ASCII character */
841 else
842 buf[idx++] = tbuf[u];
843 }
844 buf[idx] = 0;
845 err = idx;
846 return err;
847}
848
849
850/********************************************************************
851 * USB device handling:
852 * the USB device are static allocated [USB_MAX_DEVICE].
853 */
854
Sven Schwermerfd09c202018-11-21 08:43:56 +0100855#if !CONFIG_IS_ENABLED(DM_USB)
wdenkaffae2b2002-08-17 09:36:01 +0000856
857/* returns a pointer to the device with the index [index].
858 * if the device is not assigned (dev->devnum==-1) returns NULL
859 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200860struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000861{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200862 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000863 return NULL;
864 else
865 return &usb_dev[index];
866}
867
Simon Glass79b58882015-03-25 12:22:01 -0600868int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp)
wdenkaffae2b2002-08-17 09:36:01 +0000869{
870 int i;
Vivek Gautamceb49722013-04-12 16:34:33 +0530871 debug("New Device %d\n", dev_index);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200872 if (dev_index == USB_MAX_DEVICE) {
873 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
Simon Glass79b58882015-03-25 12:22:01 -0600874 return -ENOSPC;
wdenkaffae2b2002-08-17 09:36:01 +0000875 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200876 /* default Address is 0, real addresses start with 1 */
877 usb_dev[dev_index].devnum = dev_index + 1;
878 usb_dev[dev_index].maxchild = 0;
879 for (i = 0; i < USB_MAXCHILDREN; i++)
880 usb_dev[dev_index].children[i] = NULL;
881 usb_dev[dev_index].parent = NULL;
Lucas Stachc7e3b2b2012-09-26 00:14:34 +0200882 usb_dev[dev_index].controller = controller;
wdenkaffae2b2002-08-17 09:36:01 +0000883 dev_index++;
Simon Glass79b58882015-03-25 12:22:01 -0600884 *devp = &usb_dev[dev_index - 1];
885
886 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000887}
888
Milind Choudhary359439d2012-12-12 17:55:28 -0800889/*
890 * Free the newly created device node.
891 * Called in error cases where configuring a newly attached
892 * device fails for some reason.
893 */
Simon Glass79b58882015-03-25 12:22:01 -0600894void usb_free_device(struct udevice *controller)
Milind Choudhary359439d2012-12-12 17:55:28 -0800895{
896 dev_index--;
Vivek Gautamceb49722013-04-12 16:34:33 +0530897 debug("Freeing device node: %d\n", dev_index);
Milind Choudhary359439d2012-12-12 17:55:28 -0800898 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
899 usb_dev[dev_index].devnum = -1;
900}
wdenkaffae2b2002-08-17 09:36:01 +0000901
902/*
Vivek Gautam5853e132013-09-14 14:02:45 +0530903 * XHCI issues Enable Slot command and thereafter
904 * allocates device contexts. Provide a weak alias
905 * function for the purpose, so that XHCI overrides it
906 * and EHCI/OHCI just work out of the box.
907 */
908__weak int usb_alloc_device(struct usb_device *udev)
909{
910 return 0;
911}
Sven Schwermerfd09c202018-11-21 08:43:56 +0100912#endif /* !CONFIG_IS_ENABLED(DM_USB) */
Simon Glass862e75c2015-03-25 12:22:04 -0600913
Hans de Goede682c9f82015-06-17 21:33:47 +0200914static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
Simon Glass862e75c2015-03-25 12:22:04 -0600915{
Stefan Roese3ed9eb92016-03-15 13:59:14 +0100916 if (!hub)
Hans de Goede8802f562015-06-17 21:33:48 +0200917 usb_reset_root_port(dev);
Simon Glass862e75c2015-03-25 12:22:04 -0600918
919 return 0;
920}
921
Simon Glass0ed27902015-03-25 12:22:07 -0600922static int get_descriptor_len(struct usb_device *dev, int len, int expect_len)
wdenkaffae2b2002-08-17 09:36:01 +0000923{
Simon Glass128fcac2015-03-25 12:22:05 -0600924 __maybe_unused struct usb_device_descriptor *desc;
Puneet Saxenaf5766132012-04-03 14:56:06 +0530925 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
Simon Glass0ed27902015-03-25 12:22:07 -0600926 int err;
927
928 desc = (struct usb_device_descriptor *)tmpbuf;
929
930 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len);
931 if (err < expect_len) {
932 if (err < 0) {
933 printf("unable to get device descriptor (error=%d)\n",
934 err);
935 return err;
936 } else {
937 printf("USB device descriptor short read (expected %i, got %i)\n",
938 expect_len, err);
939 return -EIO;
940 }
941 }
942 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
943
944 return 0;
945}
946
947static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
948{
Vivek Gautam5853e132013-09-14 14:02:45 +0530949 /*
Simon Glass53d8aa02015-03-25 12:22:03 -0600950 * This is a Windows scheme of initialization sequence, with double
Remy Bohmer48867202008-10-10 10:23:21 +0200951 * reset of the device (Linux uses the same sequence)
Remy Bohmerc9e84362008-09-16 14:55:44 +0200952 * Some equipment is said to work only with such init sequence; this
953 * patch is based on the work by Alan Stern:
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100954 * http://sourceforge.net/mailarchive/forum.php?
955 * thread_id=5729457&forum_id=5398
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200956 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200957
Simon Glass53d8aa02015-03-25 12:22:03 -0600958 /*
959 * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200960 * only 18 bytes long, this will terminate with a short packet. But if
961 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Hans de Goede2b338ef2015-05-05 23:56:04 +0200962 * some more, or keeps on retransmitting the 8 byte header.
963 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200964
Hans de Goede2b338ef2015-05-05 23:56:04 +0200965 if (dev->speed == USB_SPEED_LOW) {
966 dev->descriptor.bMaxPacketSize0 = 8;
967 dev->maxpacketsize = PACKET_SIZE_8;
968 } else {
969 dev->descriptor.bMaxPacketSize0 = 64;
970 dev->maxpacketsize = PACKET_SIZE_64;
971 }
972 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
973 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
Remy Bohmer48867202008-10-10 10:23:21 +0200974
Bin Mengc008faa2017-09-18 06:40:42 -0700975 if (do_read && dev->speed == USB_SPEED_FULL) {
Simon Glass128fcac2015-03-25 12:22:05 -0600976 int err;
Simon Glass862e75c2015-03-25 12:22:04 -0600977
Simon Glass128fcac2015-03-25 12:22:05 -0600978 /*
Bin Mengc008faa2017-09-18 06:40:42 -0700979 * Validate we've received only at least 8 bytes, not that
980 * we've received the entire descriptor. The reasoning is:
981 * - The code only uses fields in the first 8 bytes, so
982 * that's all we need to have fetched at this stage.
983 * - The smallest maxpacket size is 8 bytes. Before we know
984 * the actual maxpacket the device uses, the USB controller
985 * may only accept a single packet. Consequently we are only
986 * guaranteed to receive 1 packet (at least 8 bytes) even in
987 * a non-error case.
Simon Glass128fcac2015-03-25 12:22:05 -0600988 *
Bin Mengc008faa2017-09-18 06:40:42 -0700989 * At least the DWC2 controller needs to be programmed with
990 * the number of packets in addition to the number of bytes.
991 * A request for 64 bytes of data with the maxpacket guessed
992 * as 64 (above) yields a request for 1 packet.
Simon Glass128fcac2015-03-25 12:22:05 -0600993 */
Simon Glass0ed27902015-03-25 12:22:07 -0600994 err = get_descriptor_len(dev, 64, 8);
995 if (err)
996 return err;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200997 }
Remy Bohmer48867202008-10-10 10:23:21 +0200998
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100999 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +00001000 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
1001 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchide39f8c2008-11-26 17:41:34 +01001002 case 8:
1003 dev->maxpacketsize = PACKET_SIZE_8;
1004 break;
1005 case 16:
1006 dev->maxpacketsize = PACKET_SIZE_16;
1007 break;
1008 case 32:
1009 dev->maxpacketsize = PACKET_SIZE_32;
1010 break;
1011 case 64:
1012 dev->maxpacketsize = PACKET_SIZE_64;
1013 break;
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001014 default:
Bin Mengc008faa2017-09-18 06:40:42 -07001015 printf("%s: invalid max packet size\n", __func__);
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001016 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +00001017 }
Simon Glass128fcac2015-03-25 12:22:05 -06001018
1019 return 0;
1020}
1021
Simon Glass91398f92015-03-25 12:22:06 -06001022static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001023 struct usb_device *parent)
Simon Glass91398f92015-03-25 12:22:06 -06001024{
1025 int err;
1026
1027 /*
1028 * Allocate usb 3.0 device context.
1029 * USB 3.0 (xHCI) protocol tries to allocate device slot
1030 * and related data structures first. This call does that.
1031 * Refer to sec 4.3.2 in xHCI spec rev1.0
1032 */
1033 err = usb_alloc_device(dev);
1034 if (err) {
1035 printf("Cannot allocate device context to get SLOT_ID\n");
1036 return err;
1037 }
1038 err = usb_setup_descriptor(dev, do_read);
1039 if (err)
1040 return err;
Hans de Goede682c9f82015-06-17 21:33:47 +02001041 err = usb_hub_port_reset(dev, parent);
Simon Glass91398f92015-03-25 12:22:06 -06001042 if (err)
1043 return err;
1044
1045 dev->devnum = addr;
1046
1047 err = usb_set_address(dev); /* set address */
1048
1049 if (err < 0) {
1050 printf("\n USB device not accepting new address " \
1051 "(error=%lX)\n", dev->status);
1052 return err;
1053 }
1054
1055 mdelay(10); /* Let the SET_ADDRESS settle */
1056
Bin Meng932bb662017-09-18 06:40:43 -07001057 /*
1058 * If we haven't read device descriptor before, read it here
1059 * after device is assigned an address. This is only applicable
1060 * to xHCI so far.
1061 */
1062 if (!do_read) {
1063 err = usb_setup_descriptor(dev, true);
1064 if (err)
1065 return err;
1066 }
1067
Simon Glass91398f92015-03-25 12:22:06 -06001068 return 0;
1069}
1070
Simon Glass95fbfe42015-03-25 12:22:08 -06001071int usb_select_config(struct usb_device *dev)
Simon Glass128fcac2015-03-25 12:22:05 -06001072{
Marek Vasut2f1b4302016-04-27 01:55:10 +02001073 unsigned char *tmpbuf = NULL;
Simon Glass0ed27902015-03-25 12:22:07 -06001074 int err;
Simon Glass128fcac2015-03-25 12:22:05 -06001075
Simon Glass0ed27902015-03-25 12:22:07 -06001076 err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
1077 if (err)
1078 return err;
Simon Glass128fcac2015-03-25 12:22:05 -06001079
wdenkaffae2b2002-08-17 09:36:01 +00001080 /* correct le values */
Christian Eggersc9182612008-05-21 22:12:00 +02001081 le16_to_cpus(&dev->descriptor.bcdUSB);
1082 le16_to_cpus(&dev->descriptor.idVendor);
1083 le16_to_cpus(&dev->descriptor.idProduct);
1084 le16_to_cpus(&dev->descriptor.bcdDevice);
Simon Glass0ed27902015-03-25 12:22:07 -06001085
Marek Vasutef712902016-04-27 03:32:56 +02001086 /*
1087 * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive
1088 * about this first Get Descriptor request. If there are any other
1089 * requests in the first microframe, the stick crashes. Wait about
1090 * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0).
1091 */
1092 mdelay(1);
1093
wdenkaffae2b2002-08-17 09:36:01 +00001094 /* only support for one config for now */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001095 err = usb_get_configuration_len(dev, 0);
1096 if (err >= 0) {
1097 tmpbuf = (unsigned char *)malloc_cache_aligned(err);
1098 if (!tmpbuf)
1099 err = -ENOMEM;
1100 else
1101 err = usb_get_configuration_no(dev, 0, tmpbuf, err);
1102 }
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001103 if (err < 0) {
1104 printf("usb_new_device: Cannot read configuration, " \
1105 "skipping device %04x:%04x\n",
1106 dev->descriptor.idVendor, dev->descriptor.idProduct);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001107 free(tmpbuf);
Simon Glass0ed27902015-03-25 12:22:07 -06001108 return err;
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001109 }
Puneet Saxenaf5766132012-04-03 14:56:06 +05301110 usb_parse_config(dev, tmpbuf, 0);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001111 free(tmpbuf);
wdenkaffae2b2002-08-17 09:36:01 +00001112 usb_set_maxpacket(dev);
Simon Glass0ed27902015-03-25 12:22:07 -06001113 /*
1114 * we set the default configuration here
1115 * This seems premature. If the driver wants a different configuration
1116 * it will need to select itself.
1117 */
1118 err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue);
1119 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001120 printf("failed to set default configuration " \
1121 "len %d, status %lX\n", dev->act_len, dev->status);
Simon Glass0ed27902015-03-25 12:22:07 -06001122 return err;
wdenkaffae2b2002-08-17 09:36:01 +00001123 }
Marek Vasutf647bf02016-04-27 03:08:12 +02001124
1125 /*
1126 * Wait until the Set Configuration request gets processed by the
1127 * device. This is required by at least SanDisk Cruzer Pop USB 2.0
1128 * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller.
1129 */
1130 mdelay(10);
1131
Vivek Gautamceb49722013-04-12 16:34:33 +05301132 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1133 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1134 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +00001135 memset(dev->mf, 0, sizeof(dev->mf));
1136 memset(dev->prod, 0, sizeof(dev->prod));
1137 memset(dev->serial, 0, sizeof(dev->serial));
1138 if (dev->descriptor.iManufacturer)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001139 usb_string(dev, dev->descriptor.iManufacturer,
1140 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +00001141 if (dev->descriptor.iProduct)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001142 usb_string(dev, dev->descriptor.iProduct,
1143 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +00001144 if (dev->descriptor.iSerialNumber)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001145 usb_string(dev, dev->descriptor.iSerialNumber,
1146 dev->serial, sizeof(dev->serial));
Vivek Gautamceb49722013-04-12 16:34:33 +05301147 debug("Manufacturer %s\n", dev->mf);
1148 debug("Product %s\n", dev->prod);
1149 debug("SerialNumber %s\n", dev->serial);
Simon Glass0ed27902015-03-25 12:22:07 -06001150
1151 return 0;
1152}
1153
Simon Glass95fbfe42015-03-25 12:22:08 -06001154int usb_setup_device(struct usb_device *dev, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001155 struct usb_device *parent)
Simon Glass0ed27902015-03-25 12:22:07 -06001156{
1157 int addr;
1158 int ret;
1159
1160 /* We still haven't set the Address yet */
1161 addr = dev->devnum;
1162 dev->devnum = 0;
1163
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001164 ret = usb_prepare_device(dev, addr, do_read, parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001165 if (ret)
1166 return ret;
1167 ret = usb_select_config(dev);
1168
1169 return ret;
1170}
1171
Sven Schwermerfd09c202018-11-21 08:43:56 +01001172#if !CONFIG_IS_ENABLED(DM_USB)
Simon Glass0ed27902015-03-25 12:22:07 -06001173/*
1174 * By the time we get here, the device has gotten a new device ID
1175 * and is in the default state. We need to identify the thing and
1176 * get the ball rolling..
1177 *
1178 * Returns 0 for success, != 0 for error.
1179 */
1180int usb_new_device(struct usb_device *dev)
1181{
1182 bool do_read = true;
1183 int err;
1184
1185 /*
1186 * XHCI needs to issue a Address device command to setup
1187 * proper device context structures, before it can interact
1188 * with the device. So a get_descriptor will fail before any
1189 * of that is done for XHCI unlike EHCI.
1190 */
Masahiro Yamada0a8cc1a2016-06-04 07:35:03 +09001191#ifdef CONFIG_USB_XHCI_HCD
Simon Glass0ed27902015-03-25 12:22:07 -06001192 do_read = false;
1193#endif
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001194 err = usb_setup_device(dev, do_read, dev->parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001195 if (err)
1196 return err;
1197
1198 /* Now probe if the device is a hub */
1199 err = usb_hub_probe(dev, 0);
1200 if (err < 0)
1201 return err;
1202
wdenkaffae2b2002-08-17 09:36:01 +00001203 return 0;
1204}
Simon Glass95fbfe42015-03-25 12:22:08 -06001205#endif
wdenkaffae2b2002-08-17 09:36:01 +00001206
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001207__weak
Troy Kiskybba67912013-10-10 15:27:55 -07001208int board_usb_init(int index, enum usb_init_type init)
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001209{
1210 return 0;
1211}
Kishon Vijay Abraham Idb378d72015-02-23 18:40:18 +05301212
1213__weak
1214int board_usb_cleanup(int index, enum usb_init_type init)
1215{
1216 return 0;
1217}
Simon Glass95fbfe42015-03-25 12:22:08 -06001218
1219bool usb_device_has_child_on_port(struct usb_device *parent, int port)
1220{
Sven Schwermerfd09c202018-11-21 08:43:56 +01001221#if CONFIG_IS_ENABLED(DM_USB)
Simon Glass95fbfe42015-03-25 12:22:08 -06001222 return false;
1223#else
1224 return parent->children[port] != NULL;
1225#endif
1226}
1227
Sven Schwermerfd09c202018-11-21 08:43:56 +01001228#if CONFIG_IS_ENABLED(DM_USB)
Stefan BrĂ¼nsfaa7db22015-12-22 01:21:03 +01001229void usb_find_usb2_hub_address_port(struct usb_device *udev,
1230 uint8_t *hub_address, uint8_t *hub_port)
1231{
1232 struct udevice *parent;
1233 struct usb_device *uparent, *ttdev;
1234
1235 /*
1236 * When called from usb-uclass.c: usb_scan_device() udev->dev points
1237 * to the parent udevice, not the actual udevice belonging to the
1238 * udev as the device is not instantiated yet. So when searching
1239 * for the first usb-2 parent start with udev->dev not
1240 * udev->dev->parent .
1241 */
1242 ttdev = udev;
1243 parent = udev->dev;
1244 uparent = dev_get_parent_priv(parent);
1245
1246 while (uparent->speed != USB_SPEED_HIGH) {
1247 struct udevice *dev = parent;
1248
1249 if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) {
1250 printf("Error: Cannot find high speed parent of usb-1 device\n");
1251 *hub_address = 0;
1252 *hub_port = 0;
1253 return;
1254 }
1255
1256 ttdev = dev_get_parent_priv(dev);
1257 parent = dev->parent;
1258 uparent = dev_get_parent_priv(parent);
1259 }
1260 *hub_address = uparent->devnum;
1261 *hub_port = ttdev->portnr;
1262}
1263#else
1264void usb_find_usb2_hub_address_port(struct usb_device *udev,
1265 uint8_t *hub_address, uint8_t *hub_port)
1266{
1267 /* Find out the nearest parent which is high speed */
1268 while (udev->parent->parent != NULL)
1269 if (udev->parent->speed != USB_SPEED_HIGH) {
1270 udev = udev->parent;
1271 } else {
1272 *hub_address = udev->parent->devnum;
1273 *hub_port = udev->portnr;
1274 return;
1275 }
1276
1277 printf("Error: Cannot find high speed parent of usb-1 device\n");
1278 *hub_address = 0;
1279 *hub_port = 0;
1280}
1281#endif
1282
1283
wdenkaffae2b2002-08-17 09:36:01 +00001284/* EOF */