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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
45#ifndef CONFIG_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}
Simon Glass95fbfe42015-03-25 12:22:08 -0600186#endif /* !CONFIG_DM_USB */
wdenkaffae2b2002-08-17 09:36:01 +0000187
188
189/*-------------------------------------------------------------------
190 * Message wrappers.
191 *
192 */
193
194/*
195 * submits an Interrupt Message
196 */
197int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200198 void *buffer, int transfer_len, int interval)
wdenkaffae2b2002-08-17 09:36:01 +0000199{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200200 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
wdenkaffae2b2002-08-17 09:36:01 +0000201}
202
203/*
204 * submits a control message and waits for comletion (at least timeout * 1ms)
205 * If timeout is 0, we don't wait for completion (used as example to set and
206 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
207 * allow control messages with 0 timeout, by previousely resetting the flag
208 * asynch_allowed (usb_disable_asynch(1)).
Vagrant Cascadiana6f70a32016-03-15 12:16:39 -0700209 * returns the transferred length if OK or -1 if error. The transferred length
wdenkaffae2b2002-08-17 09:36:01 +0000210 * and the current status are stored in the dev->act_len and dev->status.
211 */
212int usb_control_msg(struct usb_device *dev, unsigned int pipe,
213 unsigned char request, unsigned char requesttype,
214 unsigned short value, unsigned short index,
215 void *data, unsigned short size, int timeout)
216{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530217 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Hans de Goede651d95c2015-05-10 14:10:14 +0200218 int err;
Marek Vasute159e482012-02-13 18:58:18 +0000219
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200220 if ((timeout == 0) && (!asynch_allowed)) {
221 /* request for a asynch control pipe is not allowed */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200222 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200223 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200224
wdenkaffae2b2002-08-17 09:36:01 +0000225 /* set setup command */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530226 setup_packet->requesttype = requesttype;
227 setup_packet->request = request;
228 setup_packet->value = cpu_to_le16(value);
229 setup_packet->index = cpu_to_le16(index);
230 setup_packet->length = cpu_to_le16(size);
Vivek Gautamceb49722013-04-12 16:34:33 +0530231 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
232 "value 0x%X index 0x%X length 0x%X\n",
233 request, requesttype, value, index, size);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200234 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000235
Hans de Goede651d95c2015-05-10 14:10:14 +0200236 err = submit_control_msg(dev, pipe, data, size, setup_packet);
237 if (err < 0)
238 return err;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200239 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000240 return (int)size;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200241
Remy Bohmer84d36b32010-02-01 19:40:47 +0100242 /*
243 * Wait for status to update until timeout expires, USB driver
244 * interrupt handler may set the status when the USB operation has
245 * been completed.
246 */
247 while (timeout--) {
248 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
249 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000250 mdelay(1);
Remy Bohmer48867202008-10-10 10:23:21 +0200251 }
Remy Bohmer84d36b32010-02-01 19:40:47 +0100252 if (dev->status)
253 return -1;
Remy Bohmer48867202008-10-10 10:23:21 +0200254
255 return dev->act_len;
Remy Bohmer84d36b32010-02-01 19:40:47 +0100256
wdenkaffae2b2002-08-17 09:36:01 +0000257}
258
259/*-------------------------------------------------------------------
260 * submits bulk message, and waits for completion. returns 0 if Ok or
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200261 * negative if Error.
wdenkaffae2b2002-08-17 09:36:01 +0000262 * synchronous behavior
263 */
264int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
265 void *data, int len, int *actual_length, int timeout)
266{
267 if (len < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200268 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200269 dev->status = USB_ST_NOT_PROC; /*not yet processed */
Ilya Yanokfd060282012-07-15 04:43:51 +0000270 if (submit_bulk_msg(dev, pipe, data, len) < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200271 return -EIO;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200272 while (timeout--) {
273 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000274 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000275 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000276 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200277 *actual_length = dev->act_len;
278 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000279 return 0;
280 else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200281 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000282}
283
284
285/*-------------------------------------------------------------------
286 * Max Packet stuff
287 */
288
289/*
290 * returns the max packet size, depending on the pipe direction and
291 * the configurations values
292 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200293int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000294{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200295 /* direction is out -> use emaxpacket out */
296 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100297 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000298 else
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100299 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000300}
301
Marek Vasut5e8baf82011-11-05 23:35:12 +0100302/*
303 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmerbe19d322008-09-16 14:55:42 +0200304 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
305 * when it is inlined in 1 single routine. What happens is that the register r3
306 * is used as loop-count 'i', but gets overwritten later on.
307 * This is clearly a compiler bug, but it is easier to workaround it here than
308 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
309 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100310 *
311 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmerbe19d322008-09-16 14:55:42 +0200312 */
Mike Frysinger66cf6412012-04-04 18:44:53 +0000313static void noinline
Marek Vasut5e8baf82011-11-05 23:35:12 +0100314usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmerbe19d322008-09-16 14:55:42 +0200315{
316 int b;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100317 struct usb_endpoint_descriptor *ep;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700318 u16 ep_wMaxPacketSize;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100319
320 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmerbe19d322008-09-16 14:55:42 +0200321
322 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700323 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200324
325 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
326 USB_ENDPOINT_XFER_CONTROL) {
327 /* Control => bidirectional */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700328 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
329 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530330 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
331 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200332 } else {
333 if ((ep->bEndpointAddress & 0x80) == 0) {
334 /* OUT Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700335 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
336 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530337 debug("##EP epmaxpacketout[%d] = %d\n",
338 b, dev->epmaxpacketout[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200339 }
340 } else {
341 /* IN Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700342 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
343 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530344 debug("##EP epmaxpacketin[%d] = %d\n",
345 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200346 }
347 } /* if out */
348 } /* if control */
349}
350
wdenkaffae2b2002-08-17 09:36:01 +0000351/*
352 * set the max packed value of all endpoints in the given configuration
353 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000354static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000355{
Remy Bohmerbe19d322008-09-16 14:55:42 +0200356 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000357
Tom Rix8f8bd562009-10-31 12:37:38 -0500358 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
359 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100360 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000361
wdenkaffae2b2002-08-17 09:36:01 +0000362 return 0;
363}
364
365/*******************************************************************************
366 * Parse the config, located in buffer, and fills the dev->config structure.
367 * Note that all little/big endian swapping are done automatically.
Julius Wernereaf3e612013-07-19 13:12:08 -0700368 * (wTotalLength has already been swapped and sanitized when it was read.)
wdenkaffae2b2002-08-17 09:36:01 +0000369 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000370static int usb_parse_config(struct usb_device *dev,
371 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000372{
373 struct usb_descriptor_header *head;
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200374 int index, ifno, epno, curr_if_num;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700375 u16 ep_wMaxPacketSize;
Vivek Gautam605bd752013-04-12 16:34:34 +0530376 struct usb_interface *if_desc = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000377
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200378 ifno = -1;
379 epno = -1;
380 curr_if_num = -1;
381
382 dev->configno = cfgno;
383 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200384 if (head->bDescriptorType != USB_DT_CONFIG) {
385 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
386 head->bDescriptorType);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200387 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000388 }
Julius Wernereaf3e612013-07-19 13:12:08 -0700389 if (head->bLength != USB_DT_CONFIG_SIZE) {
390 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200391 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700392 }
393 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200394 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000395
Tom Rix8f8bd562009-10-31 12:37:38 -0500396 index = dev->config.desc.bLength;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200397 /* Ok the first entry must be a configuration entry,
398 * now process the others */
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200399 head = (struct usb_descriptor_header *) &buffer[index];
Julius Wernereaf3e612013-07-19 13:12:08 -0700400 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200401 switch (head->bDescriptorType) {
402 case USB_DT_INTERFACE:
Julius Wernereaf3e612013-07-19 13:12:08 -0700403 if (head->bLength != USB_DT_INTERFACE_SIZE) {
404 printf("ERROR: Invalid USB IF length (%d)\n",
405 head->bLength);
406 break;
407 }
408 if (index + USB_DT_INTERFACE_SIZE >
409 dev->config.desc.wTotalLength) {
410 puts("USB IF descriptor overflowed buffer!\n");
411 break;
412 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200413 if (((struct usb_interface_descriptor *) \
Julius Wernereaf3e612013-07-19 13:12:08 -0700414 head)->bInterfaceNumber != curr_if_num) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200415 /* this is a new interface, copy new desc */
416 ifno = dev->config.no_of_if;
Julius Wernereaf3e612013-07-19 13:12:08 -0700417 if (ifno >= USB_MAXINTERFACES) {
418 puts("Too many USB interfaces!\n");
419 /* try to go on with what we have */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200420 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700421 }
Vivek Gautam605bd752013-04-12 16:34:34 +0530422 if_desc = &dev->config.if_desc[ifno];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200423 dev->config.no_of_if++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700424 memcpy(if_desc, head,
425 USB_DT_INTERFACE_SIZE);
Vivek Gautam605bd752013-04-12 16:34:34 +0530426 if_desc->no_of_ep = 0;
427 if_desc->num_altsetting = 1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200428 curr_if_num =
Vivek Gautam605bd752013-04-12 16:34:34 +0530429 if_desc->desc.bInterfaceNumber;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200430 } else {
431 /* found alternate setting for the interface */
Vivek Gautam605bd752013-04-12 16:34:34 +0530432 if (ifno >= 0) {
433 if_desc = &dev->config.if_desc[ifno];
434 if_desc->num_altsetting++;
435 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200436 }
437 break;
438 case USB_DT_ENDPOINT:
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700439 if (head->bLength != USB_DT_ENDPOINT_SIZE &&
440 head->bLength != USB_DT_ENDPOINT_AUDIO_SIZE) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700441 printf("ERROR: Invalid USB EP length (%d)\n",
442 head->bLength);
443 break;
444 }
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700445 if (index + head->bLength >
Julius Wernereaf3e612013-07-19 13:12:08 -0700446 dev->config.desc.wTotalLength) {
447 puts("USB EP descriptor overflowed buffer!\n");
448 break;
449 }
450 if (ifno < 0) {
451 puts("Endpoint descriptor out of order!\n");
452 break;
453 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200454 epno = dev->config.if_desc[ifno].no_of_ep;
Vivek Gautam605bd752013-04-12 16:34:34 +0530455 if_desc = &dev->config.if_desc[ifno];
Peng Fan447b9cd2016-01-12 15:57:01 +0800456 if (epno >= USB_MAXENDPOINTS) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700457 printf("Interface %d has too many endpoints!\n",
458 if_desc->desc.bInterfaceNumber);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200459 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700460 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200461 /* found an endpoint */
Vivek Gautam605bd752013-04-12 16:34:34 +0530462 if_desc->no_of_ep++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700463 memcpy(&if_desc->ep_desc[epno], head,
464 USB_DT_ENDPOINT_SIZE);
Tom Rinib2fb47f2011-12-15 08:40:51 -0700465 ep_wMaxPacketSize = get_unaligned(&dev->config.\
466 if_desc[ifno].\
467 ep_desc[epno].\
468 wMaxPacketSize);
469 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
470 &dev->config.\
471 if_desc[ifno].\
472 ep_desc[epno].\
473 wMaxPacketSize);
Vivek Gautamceb49722013-04-12 16:34:33 +0530474 debug("if %d, ep %d\n", ifno, epno);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200475 break;
Vivek Gautam6497c662013-04-12 16:34:38 +0530476 case USB_DT_SS_ENDPOINT_COMP:
Julius Wernereaf3e612013-07-19 13:12:08 -0700477 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
478 printf("ERROR: Invalid USB EPC length (%d)\n",
479 head->bLength);
480 break;
481 }
482 if (index + USB_DT_SS_EP_COMP_SIZE >
483 dev->config.desc.wTotalLength) {
484 puts("USB EPC descriptor overflowed buffer!\n");
485 break;
486 }
487 if (ifno < 0 || epno < 0) {
488 puts("EPC descriptor out of order!\n");
489 break;
490 }
Vivek Gautam6497c662013-04-12 16:34:38 +0530491 if_desc = &dev->config.if_desc[ifno];
Julius Wernereaf3e612013-07-19 13:12:08 -0700492 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
493 USB_DT_SS_EP_COMP_SIZE);
Vivek Gautam6497c662013-04-12 16:34:38 +0530494 break;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200495 default:
496 if (head->bLength == 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200497 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200498
Vivek Gautamceb49722013-04-12 16:34:33 +0530499 debug("unknown Description Type : %x\n",
500 head->bDescriptorType);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200501
Vivek Gautamceb49722013-04-12 16:34:33 +0530502#ifdef DEBUG
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200503 {
Wolfgang Denkfad2e1b2011-10-05 23:11:19 +0200504 unsigned char *ch = (unsigned char *)head;
Vivek Gautamceb49722013-04-12 16:34:33 +0530505 int i;
506
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200507 for (i = 0; i < head->bLength; i++)
Vivek Gautamceb49722013-04-12 16:34:33 +0530508 debug("%02X ", *ch++);
509 debug("\n\n\n");
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200510 }
Vivek Gautamceb49722013-04-12 16:34:33 +0530511#endif
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200512 break;
wdenkaffae2b2002-08-17 09:36:01 +0000513 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200514 index += head->bLength;
515 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000516 }
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200517 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000518}
519
520/***********************************************************************
521 * Clears an endpoint
522 * endp: endpoint number in bits 0-3;
523 * direction flag in bit 7 (1 = IN, 0 = OUT)
524 */
525int usb_clear_halt(struct usb_device *dev, int pipe)
526{
527 int result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200528 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000529
530 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200531 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
532 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000533
534 /* don't clear if failed */
535 if (result < 0)
536 return result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200537
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200538 /*
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200539 * NOTE: we do not get status and verify reset was successful
540 * as some devices are reported to lock up upon this check..
541 */
542
wdenkaffae2b2002-08-17 09:36:01 +0000543 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200544
wdenkaffae2b2002-08-17 09:36:01 +0000545 /* toggle is reset on clear */
546 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
547 return 0;
548}
549
550
551/**********************************************************************
552 * get_descriptor type
553 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000554static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200555 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000556{
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900557 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
558 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
559 (type << 8) + index, 0, buf, size,
560 USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000561}
562
563/**********************************************************************
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100564 * gets len of configuration cfgno
wdenkaffae2b2002-08-17 09:36:01 +0000565 */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100566int usb_get_configuration_len(struct usb_device *dev, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000567{
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200568 int result;
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100569 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, 9);
Ilya Yanokc60795f2012-11-06 13:48:20 +0000570 struct usb_config_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000571
Ilya Yanokc60795f2012-11-06 13:48:20 +0000572 config = (struct usb_config_descriptor *)&buffer[0];
Remy Bohmer48867202008-10-10 10:23:21 +0200573 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
574 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000575 if (result < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200576 printf("unable to get descriptor, error %lX\n",
577 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000578 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200579 printf("config descriptor too short " \
Remy Bohmer48867202008-10-10 10:23:21 +0200580 "(expected %i, got %i)\n", 9, result);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200581 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000582 }
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100583 return le16_to_cpu(config->wTotalLength);
584}
wdenkaffae2b2002-08-17 09:36:01 +0000585
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100586/**********************************************************************
587 * gets configuration cfgno and store it in the buffer
588 */
589int usb_get_configuration_no(struct usb_device *dev, int cfgno,
590 unsigned char *buffer, int length)
591{
592 int result;
593 struct usb_config_descriptor *config;
wdenkcd0a9de2004-02-23 20:48:38 +0000594
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100595 config = (struct usb_config_descriptor *)&buffer[0];
Julius Wernereaf3e612013-07-19 13:12:08 -0700596 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100597 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result,
598 le16_to_cpu(config->wTotalLength));
599 config->wTotalLength = result; /* validated, with CPU byte order */
Julius Wernereaf3e612013-07-19 13:12:08 -0700600
wdenkaffae2b2002-08-17 09:36:01 +0000601 return result;
602}
603
604/********************************************************************
605 * set address of a device to the value in dev->devnum.
606 * This can only be done by addressing the device via the default address (0)
607 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000608static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000609{
Vivek Gautamceb49722013-04-12 16:34:33 +0530610 debug("set address %d\n", dev->devnum);
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900611
612 return usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS,
613 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000614}
615
616/********************************************************************
617 * set interface number to interface
618 */
619int usb_set_interface(struct usb_device *dev, int interface, int alternate)
620{
Tom Rix8f8bd562009-10-31 12:37:38 -0500621 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000622 int ret, i;
623
Tom Rix8f8bd562009-10-31 12:37:38 -0500624 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
625 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000626 if_face = &dev->config.if_desc[i];
627 break;
628 }
629 }
630 if (!if_face) {
631 printf("selecting invalid interface %d", interface);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200632 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000633 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200634 /*
635 * We should return now for devices with only one alternate setting.
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200636 * According to 9.4.10 of the Universal Serial Bus Specification
637 * Revision 2.0 such devices can return with a STALL. This results in
638 * some USB sticks timeouting during initialization and then being
639 * unusable in U-Boot.
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200640 */
641 if (if_face->num_altsetting == 1)
642 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000643
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200644 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
645 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
646 alternate, interface, NULL, 0,
647 USB_CNTL_TIMEOUT * 5);
648 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000649 return ret;
650
wdenkaffae2b2002-08-17 09:36:01 +0000651 return 0;
652}
653
654/********************************************************************
655 * set configuration number to configuration
656 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000657static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000658{
659 int res;
Vivek Gautamceb49722013-04-12 16:34:33 +0530660 debug("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000661 /* set setup command */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200662 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
663 USB_REQ_SET_CONFIGURATION, 0,
664 configuration, 0,
665 NULL, 0, USB_CNTL_TIMEOUT);
666 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000667 dev->toggle[0] = 0;
668 dev->toggle[1] = 0;
669 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200670 } else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200671 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000672}
673
674/********************************************************************
675 * set protocol to protocol
676 */
677int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
678{
679 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
680 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
681 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
682}
683
684/********************************************************************
685 * set idle
686 */
687int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
688{
689 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
690 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
691 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
692}
693
694/********************************************************************
695 * get report
696 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200697int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
698 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000699{
700 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200701 USB_REQ_GET_REPORT,
702 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
703 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000704}
705
706/********************************************************************
707 * get class descriptor
708 */
709int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
710 unsigned char type, unsigned char id, void *buf, int size)
711{
712 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
713 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
714 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
715}
716
717/********************************************************************
718 * get string index in buffer
719 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000720static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200721 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000722{
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200723 int i;
724 int result;
725
726 for (i = 0; i < 3; ++i) {
727 /* some devices are flaky */
728 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
729 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200730 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200731 USB_CNTL_TIMEOUT);
732
733 if (result > 0)
734 break;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200735 }
736
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200737 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000738}
739
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200740
741static void usb_try_string_workarounds(unsigned char *buf, int *length)
742{
743 int newlength, oldlength = *length;
744
745 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
746 if (!isprint(buf[newlength]) || buf[newlength + 1])
747 break;
748
749 if (newlength > 2) {
750 buf[0] = newlength;
751 *length = newlength;
752 }
753}
754
755
756static int usb_string_sub(struct usb_device *dev, unsigned int langid,
757 unsigned int index, unsigned char *buf)
758{
759 int rc;
760
761 /* Try to read the string descriptor by asking for the maximum
762 * possible number of bytes */
763 rc = usb_get_string(dev, langid, index, buf, 255);
764
765 /* If that failed try to read the descriptor length, then
766 * ask for just that many bytes */
767 if (rc < 2) {
768 rc = usb_get_string(dev, langid, index, buf, 2);
769 if (rc == 2)
770 rc = usb_get_string(dev, langid, index, buf, buf[0]);
771 }
772
773 if (rc >= 2) {
774 if (!buf[0] && !buf[1])
775 usb_try_string_workarounds(buf, &rc);
776
777 /* There might be extra junk at the end of the descriptor */
778 if (buf[0] < rc)
779 rc = buf[0];
780
781 rc = rc - (rc & 1); /* force a multiple of two */
782 }
783
784 if (rc < 2)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200785 rc = -EINVAL;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200786
787 return rc;
788}
789
790
wdenkaffae2b2002-08-17 09:36:01 +0000791/********************************************************************
792 * usb_string:
793 * Get string index and translate it to ascii.
794 * returns string length (> 0) or error (< 0)
795 */
796int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
797{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530798 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000799 unsigned char *tbuf;
800 int err;
801 unsigned int u, idx;
802
803 if (size <= 0 || !buf || !index)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200804 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000805 buf[0] = 0;
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200806 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000807
808 /* get langid for strings if it's not yet known */
809 if (!dev->have_langid) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200810 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000811 if (err < 0) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530812 debug("error getting string descriptor 0 " \
813 "(error=%lx)\n", dev->status);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200814 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000815 } else if (tbuf[0] < 4) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530816 debug("string descriptor 0 too short\n");
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200817 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000818 } else {
819 dev->have_langid = -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200820 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000821 /* always use the first langid listed */
Vivek Gautamceb49722013-04-12 16:34:33 +0530822 debug("USB device number %d default " \
823 "language ID 0x%x\n",
824 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000825 }
826 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200827
828 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000829 if (err < 0)
830 return err;
wdenkcd0a9de2004-02-23 20:48:38 +0000831
wdenkaffae2b2002-08-17 09:36:01 +0000832 size--; /* leave room for trailing NULL char in output buffer */
833 for (idx = 0, u = 2; u < err; u += 2) {
834 if (idx >= size)
835 break;
836 if (tbuf[u+1]) /* high byte */
837 buf[idx++] = '?'; /* non-ASCII character */
838 else
839 buf[idx++] = tbuf[u];
840 }
841 buf[idx] = 0;
842 err = idx;
843 return err;
844}
845
846
847/********************************************************************
848 * USB device handling:
849 * the USB device are static allocated [USB_MAX_DEVICE].
850 */
851
Simon Glass95fbfe42015-03-25 12:22:08 -0600852#ifndef CONFIG_DM_USB
wdenkaffae2b2002-08-17 09:36:01 +0000853
854/* returns a pointer to the device with the index [index].
855 * if the device is not assigned (dev->devnum==-1) returns NULL
856 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200857struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000858{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200859 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000860 return NULL;
861 else
862 return &usb_dev[index];
863}
864
Simon Glass79b58882015-03-25 12:22:01 -0600865int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp)
wdenkaffae2b2002-08-17 09:36:01 +0000866{
867 int i;
Vivek Gautamceb49722013-04-12 16:34:33 +0530868 debug("New Device %d\n", dev_index);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200869 if (dev_index == USB_MAX_DEVICE) {
870 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
Simon Glass79b58882015-03-25 12:22:01 -0600871 return -ENOSPC;
wdenkaffae2b2002-08-17 09:36:01 +0000872 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200873 /* default Address is 0, real addresses start with 1 */
874 usb_dev[dev_index].devnum = dev_index + 1;
875 usb_dev[dev_index].maxchild = 0;
876 for (i = 0; i < USB_MAXCHILDREN; i++)
877 usb_dev[dev_index].children[i] = NULL;
878 usb_dev[dev_index].parent = NULL;
Lucas Stachc7e3b2b2012-09-26 00:14:34 +0200879 usb_dev[dev_index].controller = controller;
wdenkaffae2b2002-08-17 09:36:01 +0000880 dev_index++;
Simon Glass79b58882015-03-25 12:22:01 -0600881 *devp = &usb_dev[dev_index - 1];
882
883 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000884}
885
Milind Choudhary359439d2012-12-12 17:55:28 -0800886/*
887 * Free the newly created device node.
888 * Called in error cases where configuring a newly attached
889 * device fails for some reason.
890 */
Simon Glass79b58882015-03-25 12:22:01 -0600891void usb_free_device(struct udevice *controller)
Milind Choudhary359439d2012-12-12 17:55:28 -0800892{
893 dev_index--;
Vivek Gautamceb49722013-04-12 16:34:33 +0530894 debug("Freeing device node: %d\n", dev_index);
Milind Choudhary359439d2012-12-12 17:55:28 -0800895 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
896 usb_dev[dev_index].devnum = -1;
897}
wdenkaffae2b2002-08-17 09:36:01 +0000898
899/*
Vivek Gautam5853e132013-09-14 14:02:45 +0530900 * XHCI issues Enable Slot command and thereafter
901 * allocates device contexts. Provide a weak alias
902 * function for the purpose, so that XHCI overrides it
903 * and EHCI/OHCI just work out of the box.
904 */
905__weak int usb_alloc_device(struct usb_device *udev)
906{
907 return 0;
908}
Simon Glass95fbfe42015-03-25 12:22:08 -0600909#endif /* !CONFIG_DM_USB */
Simon Glass862e75c2015-03-25 12:22:04 -0600910
Hans de Goede682c9f82015-06-17 21:33:47 +0200911static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
Simon Glass862e75c2015-03-25 12:22:04 -0600912{
Stefan Roese3ed9eb92016-03-15 13:59:14 +0100913 if (!hub)
Hans de Goede8802f562015-06-17 21:33:48 +0200914 usb_reset_root_port(dev);
Simon Glass862e75c2015-03-25 12:22:04 -0600915
916 return 0;
917}
918
Simon Glass0ed27902015-03-25 12:22:07 -0600919static int get_descriptor_len(struct usb_device *dev, int len, int expect_len)
wdenkaffae2b2002-08-17 09:36:01 +0000920{
Simon Glass128fcac2015-03-25 12:22:05 -0600921 __maybe_unused struct usb_device_descriptor *desc;
Puneet Saxenaf5766132012-04-03 14:56:06 +0530922 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
Simon Glass0ed27902015-03-25 12:22:07 -0600923 int err;
924
925 desc = (struct usb_device_descriptor *)tmpbuf;
926
927 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len);
928 if (err < expect_len) {
929 if (err < 0) {
930 printf("unable to get device descriptor (error=%d)\n",
931 err);
932 return err;
933 } else {
934 printf("USB device descriptor short read (expected %i, got %i)\n",
935 expect_len, err);
936 return -EIO;
937 }
938 }
939 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
940
941 return 0;
942}
943
944static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
945{
Vivek Gautam5853e132013-09-14 14:02:45 +0530946 /*
Simon Glass53d8aa02015-03-25 12:22:03 -0600947 * This is a Windows scheme of initialization sequence, with double
Remy Bohmer48867202008-10-10 10:23:21 +0200948 * reset of the device (Linux uses the same sequence)
Remy Bohmerc9e84362008-09-16 14:55:44 +0200949 * Some equipment is said to work only with such init sequence; this
950 * patch is based on the work by Alan Stern:
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100951 * http://sourceforge.net/mailarchive/forum.php?
952 * thread_id=5729457&forum_id=5398
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200953 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200954
Simon Glass53d8aa02015-03-25 12:22:03 -0600955 /*
956 * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200957 * only 18 bytes long, this will terminate with a short packet. But if
958 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Hans de Goede2b338ef2015-05-05 23:56:04 +0200959 * some more, or keeps on retransmitting the 8 byte header.
960 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200961
Hans de Goede2b338ef2015-05-05 23:56:04 +0200962 if (dev->speed == USB_SPEED_LOW) {
963 dev->descriptor.bMaxPacketSize0 = 8;
964 dev->maxpacketsize = PACKET_SIZE_8;
965 } else {
966 dev->descriptor.bMaxPacketSize0 = 64;
967 dev->maxpacketsize = PACKET_SIZE_64;
968 }
969 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
970 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
Remy Bohmer48867202008-10-10 10:23:21 +0200971
Bin Mengc008faa2017-09-18 06:40:42 -0700972 if (do_read && dev->speed == USB_SPEED_FULL) {
Simon Glass128fcac2015-03-25 12:22:05 -0600973 int err;
Simon Glass862e75c2015-03-25 12:22:04 -0600974
Simon Glass128fcac2015-03-25 12:22:05 -0600975 /*
Bin Mengc008faa2017-09-18 06:40:42 -0700976 * Validate we've received only at least 8 bytes, not that
977 * we've received the entire descriptor. The reasoning is:
978 * - The code only uses fields in the first 8 bytes, so
979 * that's all we need to have fetched at this stage.
980 * - The smallest maxpacket size is 8 bytes. Before we know
981 * the actual maxpacket the device uses, the USB controller
982 * may only accept a single packet. Consequently we are only
983 * guaranteed to receive 1 packet (at least 8 bytes) even in
984 * a non-error case.
Simon Glass128fcac2015-03-25 12:22:05 -0600985 *
Bin Mengc008faa2017-09-18 06:40:42 -0700986 * At least the DWC2 controller needs to be programmed with
987 * the number of packets in addition to the number of bytes.
988 * A request for 64 bytes of data with the maxpacket guessed
989 * as 64 (above) yields a request for 1 packet.
Simon Glass128fcac2015-03-25 12:22:05 -0600990 */
Simon Glass0ed27902015-03-25 12:22:07 -0600991 err = get_descriptor_len(dev, 64, 8);
992 if (err)
993 return err;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200994 }
Remy Bohmer48867202008-10-10 10:23:21 +0200995
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100996 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +0000997 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
998 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100999 case 8:
1000 dev->maxpacketsize = PACKET_SIZE_8;
1001 break;
1002 case 16:
1003 dev->maxpacketsize = PACKET_SIZE_16;
1004 break;
1005 case 32:
1006 dev->maxpacketsize = PACKET_SIZE_32;
1007 break;
1008 case 64:
1009 dev->maxpacketsize = PACKET_SIZE_64;
1010 break;
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001011 default:
Bin Mengc008faa2017-09-18 06:40:42 -07001012 printf("%s: invalid max packet size\n", __func__);
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001013 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +00001014 }
Simon Glass128fcac2015-03-25 12:22:05 -06001015
1016 return 0;
1017}
1018
Simon Glass91398f92015-03-25 12:22:06 -06001019static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001020 struct usb_device *parent)
Simon Glass91398f92015-03-25 12:22:06 -06001021{
1022 int err;
1023
1024 /*
1025 * Allocate usb 3.0 device context.
1026 * USB 3.0 (xHCI) protocol tries to allocate device slot
1027 * and related data structures first. This call does that.
1028 * Refer to sec 4.3.2 in xHCI spec rev1.0
1029 */
1030 err = usb_alloc_device(dev);
1031 if (err) {
1032 printf("Cannot allocate device context to get SLOT_ID\n");
1033 return err;
1034 }
1035 err = usb_setup_descriptor(dev, do_read);
1036 if (err)
1037 return err;
Hans de Goede682c9f82015-06-17 21:33:47 +02001038 err = usb_hub_port_reset(dev, parent);
Simon Glass91398f92015-03-25 12:22:06 -06001039 if (err)
1040 return err;
1041
1042 dev->devnum = addr;
1043
1044 err = usb_set_address(dev); /* set address */
1045
1046 if (err < 0) {
1047 printf("\n USB device not accepting new address " \
1048 "(error=%lX)\n", dev->status);
1049 return err;
1050 }
1051
1052 mdelay(10); /* Let the SET_ADDRESS settle */
1053
Bin Meng932bb662017-09-18 06:40:43 -07001054 /*
1055 * If we haven't read device descriptor before, read it here
1056 * after device is assigned an address. This is only applicable
1057 * to xHCI so far.
1058 */
1059 if (!do_read) {
1060 err = usb_setup_descriptor(dev, true);
1061 if (err)
1062 return err;
1063 }
1064
Simon Glass91398f92015-03-25 12:22:06 -06001065 return 0;
1066}
1067
Simon Glass95fbfe42015-03-25 12:22:08 -06001068int usb_select_config(struct usb_device *dev)
Simon Glass128fcac2015-03-25 12:22:05 -06001069{
Marek Vasut2f1b4302016-04-27 01:55:10 +02001070 unsigned char *tmpbuf = NULL;
Simon Glass0ed27902015-03-25 12:22:07 -06001071 int err;
Simon Glass128fcac2015-03-25 12:22:05 -06001072
Simon Glass0ed27902015-03-25 12:22:07 -06001073 err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
1074 if (err)
1075 return err;
Simon Glass128fcac2015-03-25 12:22:05 -06001076
wdenkaffae2b2002-08-17 09:36:01 +00001077 /* correct le values */
Christian Eggersc9182612008-05-21 22:12:00 +02001078 le16_to_cpus(&dev->descriptor.bcdUSB);
1079 le16_to_cpus(&dev->descriptor.idVendor);
1080 le16_to_cpus(&dev->descriptor.idProduct);
1081 le16_to_cpus(&dev->descriptor.bcdDevice);
Simon Glass0ed27902015-03-25 12:22:07 -06001082
Marek Vasutef712902016-04-27 03:32:56 +02001083 /*
1084 * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive
1085 * about this first Get Descriptor request. If there are any other
1086 * requests in the first microframe, the stick crashes. Wait about
1087 * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0).
1088 */
1089 mdelay(1);
1090
wdenkaffae2b2002-08-17 09:36:01 +00001091 /* only support for one config for now */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001092 err = usb_get_configuration_len(dev, 0);
1093 if (err >= 0) {
1094 tmpbuf = (unsigned char *)malloc_cache_aligned(err);
1095 if (!tmpbuf)
1096 err = -ENOMEM;
1097 else
1098 err = usb_get_configuration_no(dev, 0, tmpbuf, err);
1099 }
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001100 if (err < 0) {
1101 printf("usb_new_device: Cannot read configuration, " \
1102 "skipping device %04x:%04x\n",
1103 dev->descriptor.idVendor, dev->descriptor.idProduct);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001104 free(tmpbuf);
Simon Glass0ed27902015-03-25 12:22:07 -06001105 return err;
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001106 }
Puneet Saxenaf5766132012-04-03 14:56:06 +05301107 usb_parse_config(dev, tmpbuf, 0);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001108 free(tmpbuf);
wdenkaffae2b2002-08-17 09:36:01 +00001109 usb_set_maxpacket(dev);
Simon Glass0ed27902015-03-25 12:22:07 -06001110 /*
1111 * we set the default configuration here
1112 * This seems premature. If the driver wants a different configuration
1113 * it will need to select itself.
1114 */
1115 err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue);
1116 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001117 printf("failed to set default configuration " \
1118 "len %d, status %lX\n", dev->act_len, dev->status);
Simon Glass0ed27902015-03-25 12:22:07 -06001119 return err;
wdenkaffae2b2002-08-17 09:36:01 +00001120 }
Marek Vasutf647bf02016-04-27 03:08:12 +02001121
1122 /*
1123 * Wait until the Set Configuration request gets processed by the
1124 * device. This is required by at least SanDisk Cruzer Pop USB 2.0
1125 * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller.
1126 */
1127 mdelay(10);
1128
Vivek Gautamceb49722013-04-12 16:34:33 +05301129 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1130 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1131 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +00001132 memset(dev->mf, 0, sizeof(dev->mf));
1133 memset(dev->prod, 0, sizeof(dev->prod));
1134 memset(dev->serial, 0, sizeof(dev->serial));
1135 if (dev->descriptor.iManufacturer)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001136 usb_string(dev, dev->descriptor.iManufacturer,
1137 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +00001138 if (dev->descriptor.iProduct)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001139 usb_string(dev, dev->descriptor.iProduct,
1140 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +00001141 if (dev->descriptor.iSerialNumber)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001142 usb_string(dev, dev->descriptor.iSerialNumber,
1143 dev->serial, sizeof(dev->serial));
Vivek Gautamceb49722013-04-12 16:34:33 +05301144 debug("Manufacturer %s\n", dev->mf);
1145 debug("Product %s\n", dev->prod);
1146 debug("SerialNumber %s\n", dev->serial);
Simon Glass0ed27902015-03-25 12:22:07 -06001147
1148 return 0;
1149}
1150
Simon Glass95fbfe42015-03-25 12:22:08 -06001151int usb_setup_device(struct usb_device *dev, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001152 struct usb_device *parent)
Simon Glass0ed27902015-03-25 12:22:07 -06001153{
1154 int addr;
1155 int ret;
1156
1157 /* We still haven't set the Address yet */
1158 addr = dev->devnum;
1159 dev->devnum = 0;
1160
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001161 ret = usb_prepare_device(dev, addr, do_read, parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001162 if (ret)
1163 return ret;
1164 ret = usb_select_config(dev);
1165
1166 return ret;
1167}
1168
Simon Glass95fbfe42015-03-25 12:22:08 -06001169#ifndef CONFIG_DM_USB
Simon Glass0ed27902015-03-25 12:22:07 -06001170/*
1171 * By the time we get here, the device has gotten a new device ID
1172 * and is in the default state. We need to identify the thing and
1173 * get the ball rolling..
1174 *
1175 * Returns 0 for success, != 0 for error.
1176 */
1177int usb_new_device(struct usb_device *dev)
1178{
1179 bool do_read = true;
1180 int err;
1181
1182 /*
1183 * XHCI needs to issue a Address device command to setup
1184 * proper device context structures, before it can interact
1185 * with the device. So a get_descriptor will fail before any
1186 * of that is done for XHCI unlike EHCI.
1187 */
Masahiro Yamada0a8cc1a2016-06-04 07:35:03 +09001188#ifdef CONFIG_USB_XHCI_HCD
Simon Glass0ed27902015-03-25 12:22:07 -06001189 do_read = false;
1190#endif
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001191 err = usb_setup_device(dev, do_read, dev->parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001192 if (err)
1193 return err;
1194
1195 /* Now probe if the device is a hub */
1196 err = usb_hub_probe(dev, 0);
1197 if (err < 0)
1198 return err;
1199
wdenkaffae2b2002-08-17 09:36:01 +00001200 return 0;
1201}
Simon Glass95fbfe42015-03-25 12:22:08 -06001202#endif
wdenkaffae2b2002-08-17 09:36:01 +00001203
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001204__weak
Troy Kiskybba67912013-10-10 15:27:55 -07001205int board_usb_init(int index, enum usb_init_type init)
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001206{
1207 return 0;
1208}
Kishon Vijay Abraham Idb378d72015-02-23 18:40:18 +05301209
1210__weak
1211int board_usb_cleanup(int index, enum usb_init_type init)
1212{
1213 return 0;
1214}
Simon Glass95fbfe42015-03-25 12:22:08 -06001215
1216bool usb_device_has_child_on_port(struct usb_device *parent, int port)
1217{
1218#ifdef CONFIG_DM_USB
1219 return false;
1220#else
1221 return parent->children[port] != NULL;
1222#endif
1223}
1224
Stefan BrĂ¼nsfaa7db22015-12-22 01:21:03 +01001225#ifdef CONFIG_DM_USB
1226void usb_find_usb2_hub_address_port(struct usb_device *udev,
1227 uint8_t *hub_address, uint8_t *hub_port)
1228{
1229 struct udevice *parent;
1230 struct usb_device *uparent, *ttdev;
1231
1232 /*
1233 * When called from usb-uclass.c: usb_scan_device() udev->dev points
1234 * to the parent udevice, not the actual udevice belonging to the
1235 * udev as the device is not instantiated yet. So when searching
1236 * for the first usb-2 parent start with udev->dev not
1237 * udev->dev->parent .
1238 */
1239 ttdev = udev;
1240 parent = udev->dev;
1241 uparent = dev_get_parent_priv(parent);
1242
1243 while (uparent->speed != USB_SPEED_HIGH) {
1244 struct udevice *dev = parent;
1245
1246 if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) {
1247 printf("Error: Cannot find high speed parent of usb-1 device\n");
1248 *hub_address = 0;
1249 *hub_port = 0;
1250 return;
1251 }
1252
1253 ttdev = dev_get_parent_priv(dev);
1254 parent = dev->parent;
1255 uparent = dev_get_parent_priv(parent);
1256 }
1257 *hub_address = uparent->devnum;
1258 *hub_port = ttdev->portnr;
1259}
1260#else
1261void usb_find_usb2_hub_address_port(struct usb_device *udev,
1262 uint8_t *hub_address, uint8_t *hub_port)
1263{
1264 /* Find out the nearest parent which is high speed */
1265 while (udev->parent->parent != NULL)
1266 if (udev->parent->speed != USB_SPEED_HIGH) {
1267 udev = udev->parent;
1268 } else {
1269 *hub_address = udev->parent->devnum;
1270 *hub_port = udev->portnr;
1271 return;
1272 }
1273
1274 printf("Error: Cannot find high speed parent of usb-1 device\n");
1275 *hub_address = 0;
1276 *hub_port = 0;
1277}
1278#endif
1279
1280
wdenkaffae2b2002-08-17 09:36:01 +00001281/* EOF */