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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 Glassf7ae49f2020-05-10 11:40:05 -060031#include <log.h>
Simon Glass336d4612020-02-03 07:36:16 -070032#include <malloc.h>
Simon Glasscf92e052015-09-02 17:24:58 -060033#include <memalign.h>
wdenkaffae2b2002-08-17 09:36:01 +000034#include <asm/processor.h>
Mike Frysinger66cf6412012-04-04 18:44:53 +000035#include <linux/compiler.h>
Wolfgang Denk9c998aa2005-07-21 11:57:57 +020036#include <linux/ctype.h>
Christian Eggersc9182612008-05-21 22:12:00 +020037#include <asm/byteorder.h>
Tom Rinib2fb47f2011-12-15 08:40:51 -070038#include <asm/unaligned.h>
Marek Vasut97b9eb92014-08-01 03:09:53 +020039#include <errno.h>
wdenkaffae2b2002-08-17 09:36:01 +000040#include <usb.h>
Simon Glassc05ed002020-05-10 11:40:11 -060041#include <linux/delay.h>
wdenkaffae2b2002-08-17 09:36:01 +000042
wdenkcd0a9de2004-02-23 20:48:38 +000043#define USB_BUFSIZ 512
44
Simon Glass95fbfe42015-03-25 12:22:08 -060045static int asynch_allowed;
Simon Glass9fea3a72023-05-05 20:03:03 -060046bool usb_started; /* flag for the started/stopped USB status */
Simon Glass95fbfe42015-03-25 12:22:08 -060047
Sven Schwermerfd09c202018-11-21 08:43:56 +010048#if !CONFIG_IS_ENABLED(DM_USB)
wdenkaffae2b2002-08-17 09:36:01 +000049static struct usb_device usb_dev[USB_MAX_DEVICE];
50static int dev_index;
Bartlomiej Siekae51aae32006-08-03 23:20:13 +020051
wdenkaffae2b2002-08-17 09:36:01 +000052/***************************************************************************
53 * Init USB Device
54 */
wdenkaffae2b2002-08-17 09:36:01 +000055int usb_init(void)
56{
Lucas Stach93c25822012-09-26 00:14:36 +020057 void *ctrl;
58 struct usb_device *dev;
59 int i, start_index = 0;
Hans de Goeded906bbc2015-01-11 20:34:46 +010060 int controllers_initialized = 0;
Marek Vasut97b9eb92014-08-01 03:09:53 +020061 int ret;
wdenkaffae2b2002-08-17 09:36:01 +000062
Remy Bohmer6f5794a2008-09-16 14:55:43 +020063 dev_index = 0;
64 asynch_allowed = 1;
wdenkaffae2b2002-08-17 09:36:01 +000065 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +020066
67 /* first make all devices unknown */
68 for (i = 0; i < USB_MAX_DEVICE; i++) {
69 memset(&usb_dev[i], 0, sizeof(struct usb_device));
70 usb_dev[i].devnum = -1;
71 }
72
wdenkaffae2b2002-08-17 09:36:01 +000073 /* init low_level USB */
Lucas Stach93c25822012-09-26 00:14:36 +020074 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
75 /* init low_level USB */
76 printf("USB%d: ", i);
Marek Vasut97b9eb92014-08-01 03:09:53 +020077 ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
78 if (ret == -ENODEV) { /* No such device. */
79 puts("Port not available.\n");
Hans de Goeded906bbc2015-01-11 20:34:46 +010080 controllers_initialized++;
Marek Vasut97b9eb92014-08-01 03:09:53 +020081 continue;
82 }
83
84 if (ret) { /* Other error. */
Lucas Stach93c25822012-09-26 00:14:36 +020085 puts("lowlevel init failed\n");
86 continue;
87 }
88 /*
89 * lowlevel init is OK, now scan the bus for devices
90 * i.e. search HUBs and configure them
91 */
Hans de Goeded906bbc2015-01-11 20:34:46 +010092 controllers_initialized++;
Lucas Stach93c25822012-09-26 00:14:36 +020093 start_index = dev_index;
94 printf("scanning bus %d for devices... ", i);
Simon Glass79b58882015-03-25 12:22:01 -060095 ret = usb_alloc_new_device(ctrl, &dev);
96 if (ret)
Paul Kocialkowski8879be82015-04-04 15:12:28 +020097 break;
98
Lucas Stach93c25822012-09-26 00:14:36 +020099 /*
100 * device 0 is always present
101 * (root hub, so let it analyze)
102 */
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200103 ret = usb_new_device(dev);
104 if (ret)
Simon Glass79b58882015-03-25 12:22:01 -0600105 usb_free_device(dev->controller);
Lucas Stach93c25822012-09-26 00:14:36 +0200106
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200107 if (start_index == dev_index) {
Lucas Stach93c25822012-09-26 00:14:36 +0200108 puts("No USB Device found\n");
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200109 continue;
110 } else {
Lucas Stach93c25822012-09-26 00:14:36 +0200111 printf("%d USB Device(s) found\n",
112 dev_index - start_index);
Paul Kocialkowski8879be82015-04-04 15:12:28 +0200113 }
Lucas Stach93c25822012-09-26 00:14:36 +0200114
Bartlomiej Siekae51aae32006-08-03 23:20:13 +0200115 usb_started = 1;
Lucas Stach93c25822012-09-26 00:14:36 +0200116 }
117
Vivek Gautamceb49722013-04-12 16:34:33 +0530118 debug("scan end\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200119 /* if we were not able to find at least one working bus, bail out */
Hans de Goeded906bbc2015-01-11 20:34:46 +0100120 if (controllers_initialized == 0)
Lucas Stach93c25822012-09-26 00:14:36 +0200121 puts("USB error: all controllers failed lowlevel init\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200122
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200123 return usb_started ? 0 : -ENODEV;
wdenkaffae2b2002-08-17 09:36:01 +0000124}
125
126/******************************************************************************
127 * Stop USB this stops the LowLevel Part and deregisters USB devices.
128 */
129int usb_stop(void)
130{
Lucas Stach93c25822012-09-26 00:14:36 +0200131 int i;
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200132
133 if (usb_started) {
134 asynch_allowed = 1;
135 usb_started = 0;
136 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +0200137
138 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
139 if (usb_lowlevel_stop(i))
140 printf("failed to stop USB controller %d\n", i);
141 }
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200142 }
Lucas Stach93c25822012-09-26 00:14:36 +0200143
144 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000145}
146
Vincent Palatin08f3bb02015-05-04 11:30:54 -0600147/******************************************************************************
148 * Detect if a USB device has been plugged or unplugged.
149 */
150int usb_detect_change(void)
151{
152 int i, j;
153 int change = 0;
154
155 for (j = 0; j < USB_MAX_DEVICE; j++) {
156 for (i = 0; i < usb_dev[j].maxchild; i++) {
157 struct usb_port_status status;
158
159 if (usb_get_port_status(&usb_dev[j], i + 1,
160 &status) < 0)
161 /* USB request failed */
162 continue;
163
164 if (le16_to_cpu(status.wPortChange) &
165 USB_PORT_STAT_C_CONNECTION)
166 change++;
167 }
168 }
169
170 return change;
171}
172
Marek Vasut31232de2020-04-06 14:29:44 +0200173/* Lock or unlock async schedule on the controller */
174__weak int usb_lock_async(struct usb_device *dev, int lock)
175{
176 return 0;
177}
178
wdenkaffae2b2002-08-17 09:36:01 +0000179/*
180 * disables the asynch behaviour of the control message. This is used for data
181 * transfers that uses the exclusiv access to the control and bulk messages.
Simon Glass89d48362011-02-16 11:14:33 -0800182 * Returns the old value so it can be restored later.
wdenkaffae2b2002-08-17 09:36:01 +0000183 */
Simon Glass89d48362011-02-16 11:14:33 -0800184int usb_disable_asynch(int disable)
wdenkaffae2b2002-08-17 09:36:01 +0000185{
Simon Glass89d48362011-02-16 11:14:33 -0800186 int old_value = asynch_allowed;
187
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200188 asynch_allowed = !disable;
Simon Glass89d48362011-02-16 11:14:33 -0800189 return old_value;
wdenkaffae2b2002-08-17 09:36:01 +0000190}
Sven Schwermerfd09c202018-11-21 08:43:56 +0100191#endif /* !CONFIG_IS_ENABLED(DM_USB) */
wdenkaffae2b2002-08-17 09:36:01 +0000192
193
194/*-------------------------------------------------------------------
195 * Message wrappers.
196 *
197 */
198
199/*
Michal Suchanek34371212019-08-18 10:55:27 +0200200 * submits an Interrupt Message. Some drivers may implement non-blocking
201 * polling: when non-block is true and the device is not responding return
202 * -EAGAIN instead of waiting for device to respond.
wdenkaffae2b2002-08-17 09:36:01 +0000203 */
Michal Suchanekfdd135b2019-08-18 10:55:25 +0200204int usb_int_msg(struct usb_device *dev, unsigned long pipe,
Michal Suchanek34371212019-08-18 10:55:27 +0200205 void *buffer, int transfer_len, int interval, bool nonblock)
wdenkaffae2b2002-08-17 09:36:01 +0000206{
Michal Suchanek34371212019-08-18 10:55:27 +0200207 return submit_int_msg(dev, pipe, buffer, transfer_len, interval,
208 nonblock);
wdenkaffae2b2002-08-17 09:36:01 +0000209}
210
211/*
212 * submits a control message and waits for comletion (at least timeout * 1ms)
213 * If timeout is 0, we don't wait for completion (used as example to set and
214 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
215 * allow control messages with 0 timeout, by previousely resetting the flag
216 * asynch_allowed (usb_disable_asynch(1)).
Vagrant Cascadiana6f70a32016-03-15 12:16:39 -0700217 * returns the transferred length if OK or -1 if error. The transferred length
wdenkaffae2b2002-08-17 09:36:01 +0000218 * and the current status are stored in the dev->act_len and dev->status.
219 */
220int usb_control_msg(struct usb_device *dev, unsigned int pipe,
221 unsigned char request, unsigned char requesttype,
222 unsigned short value, unsigned short index,
223 void *data, unsigned short size, int timeout)
224{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530225 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Hans de Goede651d95c2015-05-10 14:10:14 +0200226 int err;
Marek Vasute159e482012-02-13 18:58:18 +0000227
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200228 if ((timeout == 0) && (!asynch_allowed)) {
229 /* request for a asynch control pipe is not allowed */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200230 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200231 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200232
wdenkaffae2b2002-08-17 09:36:01 +0000233 /* set setup command */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530234 setup_packet->requesttype = requesttype;
235 setup_packet->request = request;
236 setup_packet->value = cpu_to_le16(value);
237 setup_packet->index = cpu_to_le16(index);
238 setup_packet->length = cpu_to_le16(size);
Vivek Gautamceb49722013-04-12 16:34:33 +0530239 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
240 "value 0x%X index 0x%X length 0x%X\n",
241 request, requesttype, value, index, size);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200242 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000243
Hans de Goede651d95c2015-05-10 14:10:14 +0200244 err = submit_control_msg(dev, pipe, data, size, setup_packet);
245 if (err < 0)
246 return err;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200247 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000248 return (int)size;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200249
Remy Bohmer84d36b32010-02-01 19:40:47 +0100250 /*
251 * Wait for status to update until timeout expires, USB driver
252 * interrupt handler may set the status when the USB operation has
253 * been completed.
254 */
255 while (timeout--) {
256 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
257 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000258 mdelay(1);
Remy Bohmer48867202008-10-10 10:23:21 +0200259 }
Remy Bohmer84d36b32010-02-01 19:40:47 +0100260 if (dev->status)
261 return -1;
Remy Bohmer48867202008-10-10 10:23:21 +0200262
263 return dev->act_len;
Remy Bohmer84d36b32010-02-01 19:40:47 +0100264
wdenkaffae2b2002-08-17 09:36:01 +0000265}
266
267/*-------------------------------------------------------------------
268 * submits bulk message, and waits for completion. returns 0 if Ok or
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200269 * negative if Error.
wdenkaffae2b2002-08-17 09:36:01 +0000270 * synchronous behavior
271 */
272int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
273 void *data, int len, int *actual_length, int timeout)
274{
275 if (len < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200276 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200277 dev->status = USB_ST_NOT_PROC; /*not yet processed */
Ilya Yanokfd060282012-07-15 04:43:51 +0000278 if (submit_bulk_msg(dev, pipe, data, len) < 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200279 return -EIO;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200280 while (timeout--) {
281 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000282 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000283 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000284 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200285 *actual_length = dev->act_len;
286 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000287 return 0;
288 else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200289 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000290}
291
292
293/*-------------------------------------------------------------------
294 * Max Packet stuff
295 */
296
297/*
298 * returns the max packet size, depending on the pipe direction and
299 * the configurations values
300 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200301int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000302{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200303 /* direction is out -> use emaxpacket out */
304 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100305 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000306 else
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100307 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000308}
309
Marek Vasut5e8baf82011-11-05 23:35:12 +0100310/*
311 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmerbe19d322008-09-16 14:55:42 +0200312 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
313 * when it is inlined in 1 single routine. What happens is that the register r3
314 * is used as loop-count 'i', but gets overwritten later on.
315 * This is clearly a compiler bug, but it is easier to workaround it here than
316 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
317 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100318 *
319 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmerbe19d322008-09-16 14:55:42 +0200320 */
Mike Frysinger66cf6412012-04-04 18:44:53 +0000321static void noinline
Marek Vasut5e8baf82011-11-05 23:35:12 +0100322usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmerbe19d322008-09-16 14:55:42 +0200323{
324 int b;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100325 struct usb_endpoint_descriptor *ep;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700326 u16 ep_wMaxPacketSize;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100327
328 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmerbe19d322008-09-16 14:55:42 +0200329
330 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700331 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200332
333 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
334 USB_ENDPOINT_XFER_CONTROL) {
335 /* Control => bidirectional */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700336 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
337 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530338 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
339 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200340 } else {
341 if ((ep->bEndpointAddress & 0x80) == 0) {
342 /* OUT Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700343 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
344 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530345 debug("##EP epmaxpacketout[%d] = %d\n",
346 b, dev->epmaxpacketout[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200347 }
348 } else {
349 /* IN Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700350 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
351 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530352 debug("##EP epmaxpacketin[%d] = %d\n",
353 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200354 }
355 } /* if out */
356 } /* if control */
357}
358
wdenkaffae2b2002-08-17 09:36:01 +0000359/*
360 * set the max packed value of all endpoints in the given configuration
361 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000362static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000363{
Remy Bohmerbe19d322008-09-16 14:55:42 +0200364 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000365
Tom Rix8f8bd562009-10-31 12:37:38 -0500366 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
367 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100368 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000369
wdenkaffae2b2002-08-17 09:36:01 +0000370 return 0;
371}
372
373/*******************************************************************************
374 * Parse the config, located in buffer, and fills the dev->config structure.
375 * Note that all little/big endian swapping are done automatically.
Julius Wernereaf3e612013-07-19 13:12:08 -0700376 * (wTotalLength has already been swapped and sanitized when it was read.)
wdenkaffae2b2002-08-17 09:36:01 +0000377 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000378static int usb_parse_config(struct usb_device *dev,
379 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000380{
381 struct usb_descriptor_header *head;
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200382 int index, ifno, epno, curr_if_num;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700383 u16 ep_wMaxPacketSize;
Vivek Gautam605bd752013-04-12 16:34:34 +0530384 struct usb_interface *if_desc = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000385
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200386 ifno = -1;
387 epno = -1;
388 curr_if_num = -1;
389
390 dev->configno = cfgno;
391 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200392 if (head->bDescriptorType != USB_DT_CONFIG) {
393 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
394 head->bDescriptorType);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200395 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000396 }
Julius Wernereaf3e612013-07-19 13:12:08 -0700397 if (head->bLength != USB_DT_CONFIG_SIZE) {
398 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200399 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700400 }
401 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200402 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000403
Tom Rix8f8bd562009-10-31 12:37:38 -0500404 index = dev->config.desc.bLength;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200405 /* Ok the first entry must be a configuration entry,
406 * now process the others */
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200407 head = (struct usb_descriptor_header *) &buffer[index];
Julius Wernereaf3e612013-07-19 13:12:08 -0700408 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200409 switch (head->bDescriptorType) {
410 case USB_DT_INTERFACE:
Julius Wernereaf3e612013-07-19 13:12:08 -0700411 if (head->bLength != USB_DT_INTERFACE_SIZE) {
412 printf("ERROR: Invalid USB IF length (%d)\n",
413 head->bLength);
414 break;
415 }
416 if (index + USB_DT_INTERFACE_SIZE >
417 dev->config.desc.wTotalLength) {
418 puts("USB IF descriptor overflowed buffer!\n");
419 break;
420 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200421 if (((struct usb_interface_descriptor *) \
Julius Wernereaf3e612013-07-19 13:12:08 -0700422 head)->bInterfaceNumber != curr_if_num) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200423 /* this is a new interface, copy new desc */
424 ifno = dev->config.no_of_if;
Julius Wernereaf3e612013-07-19 13:12:08 -0700425 if (ifno >= USB_MAXINTERFACES) {
426 puts("Too many USB interfaces!\n");
427 /* try to go on with what we have */
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200428 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700429 }
Vivek Gautam605bd752013-04-12 16:34:34 +0530430 if_desc = &dev->config.if_desc[ifno];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200431 dev->config.no_of_if++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700432 memcpy(if_desc, head,
433 USB_DT_INTERFACE_SIZE);
Vivek Gautam605bd752013-04-12 16:34:34 +0530434 if_desc->no_of_ep = 0;
435 if_desc->num_altsetting = 1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200436 curr_if_num =
Vivek Gautam605bd752013-04-12 16:34:34 +0530437 if_desc->desc.bInterfaceNumber;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200438 } else {
439 /* found alternate setting for the interface */
Vivek Gautam605bd752013-04-12 16:34:34 +0530440 if (ifno >= 0) {
441 if_desc = &dev->config.if_desc[ifno];
442 if_desc->num_altsetting++;
443 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200444 }
445 break;
446 case USB_DT_ENDPOINT:
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700447 if (head->bLength != USB_DT_ENDPOINT_SIZE &&
448 head->bLength != USB_DT_ENDPOINT_AUDIO_SIZE) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700449 printf("ERROR: Invalid USB EP length (%d)\n",
450 head->bLength);
451 break;
452 }
Bin Meng2f0eb2a2017-09-18 06:40:40 -0700453 if (index + head->bLength >
Julius Wernereaf3e612013-07-19 13:12:08 -0700454 dev->config.desc.wTotalLength) {
455 puts("USB EP descriptor overflowed buffer!\n");
456 break;
457 }
458 if (ifno < 0) {
459 puts("Endpoint descriptor out of order!\n");
460 break;
461 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200462 epno = dev->config.if_desc[ifno].no_of_ep;
Vivek Gautam605bd752013-04-12 16:34:34 +0530463 if_desc = &dev->config.if_desc[ifno];
Peng Fan447b9cd2016-01-12 15:57:01 +0800464 if (epno >= USB_MAXENDPOINTS) {
Julius Wernereaf3e612013-07-19 13:12:08 -0700465 printf("Interface %d has too many endpoints!\n",
466 if_desc->desc.bInterfaceNumber);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200467 return -EINVAL;
Julius Wernereaf3e612013-07-19 13:12:08 -0700468 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200469 /* found an endpoint */
Vivek Gautam605bd752013-04-12 16:34:34 +0530470 if_desc->no_of_ep++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700471 memcpy(&if_desc->ep_desc[epno], head,
472 USB_DT_ENDPOINT_SIZE);
Tom Rinib2fb47f2011-12-15 08:40:51 -0700473 ep_wMaxPacketSize = get_unaligned(&dev->config.\
474 if_desc[ifno].\
475 ep_desc[epno].\
476 wMaxPacketSize);
477 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
478 &dev->config.\
479 if_desc[ifno].\
480 ep_desc[epno].\
481 wMaxPacketSize);
Vivek Gautamceb49722013-04-12 16:34:33 +0530482 debug("if %d, ep %d\n", ifno, epno);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200483 break;
Vivek Gautam6497c662013-04-12 16:34:38 +0530484 case USB_DT_SS_ENDPOINT_COMP:
Julius Wernereaf3e612013-07-19 13:12:08 -0700485 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
486 printf("ERROR: Invalid USB EPC length (%d)\n",
487 head->bLength);
488 break;
489 }
490 if (index + USB_DT_SS_EP_COMP_SIZE >
491 dev->config.desc.wTotalLength) {
492 puts("USB EPC descriptor overflowed buffer!\n");
493 break;
494 }
495 if (ifno < 0 || epno < 0) {
496 puts("EPC descriptor out of order!\n");
497 break;
498 }
Vivek Gautam6497c662013-04-12 16:34:38 +0530499 if_desc = &dev->config.if_desc[ifno];
Julius Wernereaf3e612013-07-19 13:12:08 -0700500 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
501 USB_DT_SS_EP_COMP_SIZE);
Vivek Gautam6497c662013-04-12 16:34:38 +0530502 break;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200503 default:
504 if (head->bLength == 0)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200505 return -EINVAL;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200506
Vivek Gautamceb49722013-04-12 16:34:33 +0530507 debug("unknown Description Type : %x\n",
508 head->bDescriptorType);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200509
Vivek Gautamceb49722013-04-12 16:34:33 +0530510#ifdef DEBUG
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200511 {
Wolfgang Denkfad2e1b2011-10-05 23:11:19 +0200512 unsigned char *ch = (unsigned char *)head;
Vivek Gautamceb49722013-04-12 16:34:33 +0530513 int i;
514
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200515 for (i = 0; i < head->bLength; i++)
Vivek Gautamceb49722013-04-12 16:34:33 +0530516 debug("%02X ", *ch++);
517 debug("\n\n\n");
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200518 }
Vivek Gautamceb49722013-04-12 16:34:33 +0530519#endif
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200520 break;
wdenkaffae2b2002-08-17 09:36:01 +0000521 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200522 index += head->bLength;
523 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000524 }
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200525 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000526}
527
528/***********************************************************************
529 * Clears an endpoint
530 * endp: endpoint number in bits 0-3;
531 * direction flag in bit 7 (1 = IN, 0 = OUT)
532 */
533int usb_clear_halt(struct usb_device *dev, int pipe)
534{
535 int result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200536 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000537
538 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200539 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
540 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000541
542 /* don't clear if failed */
543 if (result < 0)
544 return result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200545
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200546 /*
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200547 * NOTE: we do not get status and verify reset was successful
548 * as some devices are reported to lock up upon this check..
549 */
550
wdenkaffae2b2002-08-17 09:36:01 +0000551 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200552
wdenkaffae2b2002-08-17 09:36:01 +0000553 /* toggle is reset on clear */
554 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
555 return 0;
556}
557
558
559/**********************************************************************
560 * get_descriptor type
561 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000562static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200563 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000564{
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900565 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
566 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
567 (type << 8) + index, 0, buf, size,
568 USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000569}
570
571/**********************************************************************
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100572 * gets len of configuration cfgno
wdenkaffae2b2002-08-17 09:36:01 +0000573 */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100574int usb_get_configuration_len(struct usb_device *dev, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000575{
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200576 int result;
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100577 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, 9);
Ilya Yanokc60795f2012-11-06 13:48:20 +0000578 struct usb_config_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000579
Ilya Yanokc60795f2012-11-06 13:48:20 +0000580 config = (struct usb_config_descriptor *)&buffer[0];
Remy Bohmer48867202008-10-10 10:23:21 +0200581 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
582 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000583 if (result < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200584 printf("unable to get descriptor, error %lX\n",
585 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000586 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200587 printf("config descriptor too short " \
Remy Bohmer48867202008-10-10 10:23:21 +0200588 "(expected %i, got %i)\n", 9, result);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200589 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000590 }
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100591 return le16_to_cpu(config->wTotalLength);
592}
wdenkaffae2b2002-08-17 09:36:01 +0000593
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100594/**********************************************************************
595 * gets configuration cfgno and store it in the buffer
596 */
597int usb_get_configuration_no(struct usb_device *dev, int cfgno,
598 unsigned char *buffer, int length)
599{
600 int result;
601 struct usb_config_descriptor *config;
wdenkcd0a9de2004-02-23 20:48:38 +0000602
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100603 config = (struct usb_config_descriptor *)&buffer[0];
Julius Wernereaf3e612013-07-19 13:12:08 -0700604 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +0100605 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result,
606 le16_to_cpu(config->wTotalLength));
607 config->wTotalLength = result; /* validated, with CPU byte order */
Julius Wernereaf3e612013-07-19 13:12:08 -0700608
wdenkaffae2b2002-08-17 09:36:01 +0000609 return result;
610}
611
612/********************************************************************
613 * set address of a device to the value in dev->devnum.
614 * This can only be done by addressing the device via the default address (0)
615 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000616static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000617{
Vivek Gautamceb49722013-04-12 16:34:33 +0530618 debug("set address %d\n", dev->devnum);
Masahiro Yamada8319aeb2016-09-06 22:17:35 +0900619
620 return usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS,
621 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000622}
623
624/********************************************************************
625 * set interface number to interface
626 */
627int usb_set_interface(struct usb_device *dev, int interface, int alternate)
628{
Tom Rix8f8bd562009-10-31 12:37:38 -0500629 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000630 int ret, i;
631
Tom Rix8f8bd562009-10-31 12:37:38 -0500632 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
633 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000634 if_face = &dev->config.if_desc[i];
635 break;
636 }
637 }
638 if (!if_face) {
639 printf("selecting invalid interface %d", interface);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200640 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000641 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200642 /*
643 * We should return now for devices with only one alternate setting.
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200644 * According to 9.4.10 of the Universal Serial Bus Specification
645 * Revision 2.0 such devices can return with a STALL. This results in
646 * some USB sticks timeouting during initialization and then being
647 * unusable in U-Boot.
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200648 */
649 if (if_face->num_altsetting == 1)
650 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000651
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200652 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
653 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
654 alternate, interface, NULL, 0,
655 USB_CNTL_TIMEOUT * 5);
656 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000657 return ret;
658
wdenkaffae2b2002-08-17 09:36:01 +0000659 return 0;
660}
661
662/********************************************************************
663 * set configuration number to configuration
664 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000665static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000666{
667 int res;
Vivek Gautamceb49722013-04-12 16:34:33 +0530668 debug("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000669 /* set setup command */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200670 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
671 USB_REQ_SET_CONFIGURATION, 0,
672 configuration, 0,
673 NULL, 0, USB_CNTL_TIMEOUT);
674 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000675 dev->toggle[0] = 0;
676 dev->toggle[1] = 0;
677 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200678 } else
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200679 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000680}
681
682/********************************************************************
683 * set protocol to protocol
684 */
685int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
686{
687 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
688 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
689 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
690}
691
692/********************************************************************
693 * set idle
694 */
695int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
696{
697 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
698 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
699 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
700}
701
702/********************************************************************
703 * get report
704 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200705int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
706 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000707{
708 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200709 USB_REQ_GET_REPORT,
710 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
711 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000712}
713
714/********************************************************************
715 * get class descriptor
716 */
717int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
718 unsigned char type, unsigned char id, void *buf, int size)
719{
720 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
721 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
722 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
723}
724
725/********************************************************************
726 * get string index in buffer
727 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000728static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200729 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000730{
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200731 int i;
732 int result;
733
734 for (i = 0; i < 3; ++i) {
735 /* some devices are flaky */
736 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
737 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200738 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200739 USB_CNTL_TIMEOUT);
740
741 if (result > 0)
742 break;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200743 }
744
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200745 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000746}
747
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200748
749static void usb_try_string_workarounds(unsigned char *buf, int *length)
750{
751 int newlength, oldlength = *length;
752
753 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
754 if (!isprint(buf[newlength]) || buf[newlength + 1])
755 break;
756
757 if (newlength > 2) {
758 buf[0] = newlength;
759 *length = newlength;
760 }
761}
762
763
764static int usb_string_sub(struct usb_device *dev, unsigned int langid,
765 unsigned int index, unsigned char *buf)
766{
767 int rc;
768
769 /* Try to read the string descriptor by asking for the maximum
770 * possible number of bytes */
771 rc = usb_get_string(dev, langid, index, buf, 255);
772
773 /* If that failed try to read the descriptor length, then
774 * ask for just that many bytes */
775 if (rc < 2) {
776 rc = usb_get_string(dev, langid, index, buf, 2);
777 if (rc == 2)
778 rc = usb_get_string(dev, langid, index, buf, buf[0]);
779 }
780
781 if (rc >= 2) {
782 if (!buf[0] && !buf[1])
783 usb_try_string_workarounds(buf, &rc);
784
785 /* There might be extra junk at the end of the descriptor */
786 if (buf[0] < rc)
787 rc = buf[0];
788
789 rc = rc - (rc & 1); /* force a multiple of two */
790 }
791
792 if (rc < 2)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200793 rc = -EINVAL;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200794
795 return rc;
796}
797
798
wdenkaffae2b2002-08-17 09:36:01 +0000799/********************************************************************
800 * usb_string:
801 * Get string index and translate it to ascii.
802 * returns string length (> 0) or error (< 0)
803 */
804int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
805{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530806 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000807 unsigned char *tbuf;
808 int err;
809 unsigned int u, idx;
810
811 if (size <= 0 || !buf || !index)
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200812 return -EINVAL;
wdenkaffae2b2002-08-17 09:36:01 +0000813 buf[0] = 0;
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200814 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000815
816 /* get langid for strings if it's not yet known */
817 if (!dev->have_langid) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200818 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000819 if (err < 0) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530820 debug("error getting string descriptor 0 " \
821 "(error=%lx)\n", dev->status);
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200822 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000823 } else if (tbuf[0] < 4) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530824 debug("string descriptor 0 too short\n");
Paul Kocialkowski5a80b342015-04-04 15:12:27 +0200825 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +0000826 } else {
827 dev->have_langid = -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200828 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000829 /* always use the first langid listed */
Vivek Gautamceb49722013-04-12 16:34:33 +0530830 debug("USB device number %d default " \
831 "language ID 0x%x\n",
832 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000833 }
834 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200835
836 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000837 if (err < 0)
838 return err;
wdenkcd0a9de2004-02-23 20:48:38 +0000839
wdenkaffae2b2002-08-17 09:36:01 +0000840 size--; /* leave room for trailing NULL char in output buffer */
841 for (idx = 0, u = 2; u < err; u += 2) {
842 if (idx >= size)
843 break;
844 if (tbuf[u+1]) /* high byte */
845 buf[idx++] = '?'; /* non-ASCII character */
846 else
847 buf[idx++] = tbuf[u];
848 }
849 buf[idx] = 0;
850 err = idx;
851 return err;
852}
853
854
855/********************************************************************
856 * USB device handling:
857 * the USB device are static allocated [USB_MAX_DEVICE].
858 */
859
Sven Schwermerfd09c202018-11-21 08:43:56 +0100860#if !CONFIG_IS_ENABLED(DM_USB)
wdenkaffae2b2002-08-17 09:36:01 +0000861
862/* returns a pointer to the device with the index [index].
863 * if the device is not assigned (dev->devnum==-1) returns NULL
864 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200865struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000866{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200867 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000868 return NULL;
869 else
870 return &usb_dev[index];
871}
872
Simon Glass79b58882015-03-25 12:22:01 -0600873int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp)
wdenkaffae2b2002-08-17 09:36:01 +0000874{
875 int i;
Vivek Gautamceb49722013-04-12 16:34:33 +0530876 debug("New Device %d\n", dev_index);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200877 if (dev_index == USB_MAX_DEVICE) {
878 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
Simon Glass79b58882015-03-25 12:22:01 -0600879 return -ENOSPC;
wdenkaffae2b2002-08-17 09:36:01 +0000880 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200881 /* default Address is 0, real addresses start with 1 */
882 usb_dev[dev_index].devnum = dev_index + 1;
883 usb_dev[dev_index].maxchild = 0;
884 for (i = 0; i < USB_MAXCHILDREN; i++)
885 usb_dev[dev_index].children[i] = NULL;
886 usb_dev[dev_index].parent = NULL;
Lucas Stachc7e3b2b2012-09-26 00:14:34 +0200887 usb_dev[dev_index].controller = controller;
wdenkaffae2b2002-08-17 09:36:01 +0000888 dev_index++;
Simon Glass79b58882015-03-25 12:22:01 -0600889 *devp = &usb_dev[dev_index - 1];
890
891 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000892}
893
Milind Choudhary359439d2012-12-12 17:55:28 -0800894/*
895 * Free the newly created device node.
896 * Called in error cases where configuring a newly attached
897 * device fails for some reason.
898 */
Simon Glass79b58882015-03-25 12:22:01 -0600899void usb_free_device(struct udevice *controller)
Milind Choudhary359439d2012-12-12 17:55:28 -0800900{
901 dev_index--;
Vivek Gautamceb49722013-04-12 16:34:33 +0530902 debug("Freeing device node: %d\n", dev_index);
Milind Choudhary359439d2012-12-12 17:55:28 -0800903 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
904 usb_dev[dev_index].devnum = -1;
905}
wdenkaffae2b2002-08-17 09:36:01 +0000906
907/*
Vivek Gautam5853e132013-09-14 14:02:45 +0530908 * XHCI issues Enable Slot command and thereafter
909 * allocates device contexts. Provide a weak alias
910 * function for the purpose, so that XHCI overrides it
911 * and EHCI/OHCI just work out of the box.
912 */
913__weak int usb_alloc_device(struct usb_device *udev)
914{
915 return 0;
916}
Sven Schwermerfd09c202018-11-21 08:43:56 +0100917#endif /* !CONFIG_IS_ENABLED(DM_USB) */
Simon Glass862e75c2015-03-25 12:22:04 -0600918
Hans de Goede682c9f82015-06-17 21:33:47 +0200919static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
Simon Glass862e75c2015-03-25 12:22:04 -0600920{
Stefan Roese3ed9eb92016-03-15 13:59:14 +0100921 if (!hub)
Hans de Goede8802f562015-06-17 21:33:48 +0200922 usb_reset_root_port(dev);
Simon Glass862e75c2015-03-25 12:22:04 -0600923
924 return 0;
925}
926
Simon Glass0ed27902015-03-25 12:22:07 -0600927static int get_descriptor_len(struct usb_device *dev, int len, int expect_len)
wdenkaffae2b2002-08-17 09:36:01 +0000928{
Simon Glass128fcac2015-03-25 12:22:05 -0600929 __maybe_unused struct usb_device_descriptor *desc;
Puneet Saxenaf5766132012-04-03 14:56:06 +0530930 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
Simon Glass0ed27902015-03-25 12:22:07 -0600931 int err;
932
933 desc = (struct usb_device_descriptor *)tmpbuf;
934
935 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len);
936 if (err < expect_len) {
937 if (err < 0) {
938 printf("unable to get device descriptor (error=%d)\n",
939 err);
940 return err;
941 } else {
942 printf("USB device descriptor short read (expected %i, got %i)\n",
943 expect_len, err);
944 return -EIO;
945 }
946 }
947 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
948
949 return 0;
950}
951
952static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
953{
Vivek Gautam5853e132013-09-14 14:02:45 +0530954 /*
Simon Glass53d8aa02015-03-25 12:22:03 -0600955 * This is a Windows scheme of initialization sequence, with double
Remy Bohmer48867202008-10-10 10:23:21 +0200956 * reset of the device (Linux uses the same sequence)
Remy Bohmerc9e84362008-09-16 14:55:44 +0200957 * Some equipment is said to work only with such init sequence; this
958 * patch is based on the work by Alan Stern:
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100959 * http://sourceforge.net/mailarchive/forum.php?
960 * thread_id=5729457&forum_id=5398
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200961 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200962
Simon Glass53d8aa02015-03-25 12:22:03 -0600963 /*
964 * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200965 * only 18 bytes long, this will terminate with a short packet. But if
966 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Hans de Goede2b338ef2015-05-05 23:56:04 +0200967 * some more, or keeps on retransmitting the 8 byte header.
968 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200969
Hans de Goede2b338ef2015-05-05 23:56:04 +0200970 if (dev->speed == USB_SPEED_LOW) {
971 dev->descriptor.bMaxPacketSize0 = 8;
972 dev->maxpacketsize = PACKET_SIZE_8;
973 } else {
974 dev->descriptor.bMaxPacketSize0 = 64;
975 dev->maxpacketsize = PACKET_SIZE_64;
976 }
977 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
978 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
Remy Bohmer48867202008-10-10 10:23:21 +0200979
Bin Mengc008faa2017-09-18 06:40:42 -0700980 if (do_read && dev->speed == USB_SPEED_FULL) {
Simon Glass128fcac2015-03-25 12:22:05 -0600981 int err;
Simon Glass862e75c2015-03-25 12:22:04 -0600982
Simon Glass128fcac2015-03-25 12:22:05 -0600983 /*
Bin Mengc008faa2017-09-18 06:40:42 -0700984 * Validate we've received only at least 8 bytes, not that
985 * we've received the entire descriptor. The reasoning is:
986 * - The code only uses fields in the first 8 bytes, so
987 * that's all we need to have fetched at this stage.
988 * - The smallest maxpacket size is 8 bytes. Before we know
989 * the actual maxpacket the device uses, the USB controller
990 * may only accept a single packet. Consequently we are only
991 * guaranteed to receive 1 packet (at least 8 bytes) even in
992 * a non-error case.
Simon Glass128fcac2015-03-25 12:22:05 -0600993 *
Bin Mengc008faa2017-09-18 06:40:42 -0700994 * At least the DWC2 controller needs to be programmed with
995 * the number of packets in addition to the number of bytes.
996 * A request for 64 bytes of data with the maxpacket guessed
997 * as 64 (above) yields a request for 1 packet.
Simon Glass128fcac2015-03-25 12:22:05 -0600998 */
Simon Glass0ed27902015-03-25 12:22:07 -0600999 err = get_descriptor_len(dev, 64, 8);
1000 if (err)
1001 return err;
Marek Vasut3406e9d2022-10-30 23:38:35 +01001002
1003 /*
1004 * Logitech Unifying Receiver 046d:c52b bcdDevice 12.10 seems
1005 * sensitive about the first Get Descriptor request. If there
1006 * are any other requests in the same microframe, the device
1007 * reports bogus data, first of the descriptor parts is not
1008 * sent to the host. Wait over one microframe duration here
1009 * (1mS for USB 1.x , 125uS for USB 2.0) to avoid triggering
1010 * the issue.
1011 */
1012 mdelay(1);
Wolfgang Denk9c998aa2005-07-21 11:57:57 +02001013 }
Remy Bohmer48867202008-10-10 10:23:21 +02001014
Michael Trimarchide39f8c2008-11-26 17:41:34 +01001015 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +00001016 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
1017 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchide39f8c2008-11-26 17:41:34 +01001018 case 8:
1019 dev->maxpacketsize = PACKET_SIZE_8;
1020 break;
1021 case 16:
1022 dev->maxpacketsize = PACKET_SIZE_16;
1023 break;
1024 case 32:
1025 dev->maxpacketsize = PACKET_SIZE_32;
1026 break;
1027 case 64:
1028 dev->maxpacketsize = PACKET_SIZE_64;
1029 break;
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001030 default:
Bin Mengc008faa2017-09-18 06:40:42 -07001031 printf("%s: invalid max packet size\n", __func__);
Paul Kocialkowski04ee6ee2015-04-04 15:12:29 +02001032 return -EIO;
wdenkaffae2b2002-08-17 09:36:01 +00001033 }
Simon Glass128fcac2015-03-25 12:22:05 -06001034
1035 return 0;
1036}
1037
Simon Glass91398f92015-03-25 12:22:06 -06001038static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001039 struct usb_device *parent)
Simon Glass91398f92015-03-25 12:22:06 -06001040{
1041 int err;
1042
1043 /*
1044 * Allocate usb 3.0 device context.
1045 * USB 3.0 (xHCI) protocol tries to allocate device slot
1046 * and related data structures first. This call does that.
1047 * Refer to sec 4.3.2 in xHCI spec rev1.0
1048 */
1049 err = usb_alloc_device(dev);
1050 if (err) {
1051 printf("Cannot allocate device context to get SLOT_ID\n");
1052 return err;
1053 }
1054 err = usb_setup_descriptor(dev, do_read);
1055 if (err)
1056 return err;
Hans de Goede682c9f82015-06-17 21:33:47 +02001057 err = usb_hub_port_reset(dev, parent);
Simon Glass91398f92015-03-25 12:22:06 -06001058 if (err)
1059 return err;
1060
1061 dev->devnum = addr;
1062
1063 err = usb_set_address(dev); /* set address */
1064
1065 if (err < 0) {
1066 printf("\n USB device not accepting new address " \
1067 "(error=%lX)\n", dev->status);
1068 return err;
1069 }
1070
1071 mdelay(10); /* Let the SET_ADDRESS settle */
1072
Bin Meng932bb662017-09-18 06:40:43 -07001073 /*
1074 * If we haven't read device descriptor before, read it here
1075 * after device is assigned an address. This is only applicable
1076 * to xHCI so far.
1077 */
1078 if (!do_read) {
1079 err = usb_setup_descriptor(dev, true);
1080 if (err)
1081 return err;
1082 }
1083
Simon Glass91398f92015-03-25 12:22:06 -06001084 return 0;
1085}
1086
Simon Glass95fbfe42015-03-25 12:22:08 -06001087int usb_select_config(struct usb_device *dev)
Simon Glass128fcac2015-03-25 12:22:05 -06001088{
Marek Vasut2f1b4302016-04-27 01:55:10 +02001089 unsigned char *tmpbuf = NULL;
Simon Glass0ed27902015-03-25 12:22:07 -06001090 int err;
Simon Glass128fcac2015-03-25 12:22:05 -06001091
Simon Glass0ed27902015-03-25 12:22:07 -06001092 err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
1093 if (err)
1094 return err;
Simon Glass128fcac2015-03-25 12:22:05 -06001095
wdenkaffae2b2002-08-17 09:36:01 +00001096 /* correct le values */
Christian Eggersc9182612008-05-21 22:12:00 +02001097 le16_to_cpus(&dev->descriptor.bcdUSB);
1098 le16_to_cpus(&dev->descriptor.idVendor);
1099 le16_to_cpus(&dev->descriptor.idProduct);
1100 le16_to_cpus(&dev->descriptor.bcdDevice);
Simon Glass0ed27902015-03-25 12:22:07 -06001101
Marek Vasutef712902016-04-27 03:32:56 +02001102 /*
1103 * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive
1104 * about this first Get Descriptor request. If there are any other
1105 * requests in the first microframe, the stick crashes. Wait about
1106 * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0).
1107 */
1108 mdelay(1);
1109
wdenkaffae2b2002-08-17 09:36:01 +00001110 /* only support for one config for now */
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001111 err = usb_get_configuration_len(dev, 0);
1112 if (err >= 0) {
1113 tmpbuf = (unsigned char *)malloc_cache_aligned(err);
1114 if (!tmpbuf)
1115 err = -ENOMEM;
1116 else
1117 err = usb_get_configuration_no(dev, 0, tmpbuf, err);
1118 }
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001119 if (err < 0) {
1120 printf("usb_new_device: Cannot read configuration, " \
1121 "skipping device %04x:%04x\n",
1122 dev->descriptor.idVendor, dev->descriptor.idProduct);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001123 free(tmpbuf);
Simon Glass0ed27902015-03-25 12:22:07 -06001124 return err;
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001125 }
Puneet Saxenaf5766132012-04-03 14:56:06 +05301126 usb_parse_config(dev, tmpbuf, 0);
Stefan BrĂ¼nsc75f57f2015-12-22 01:18:13 +01001127 free(tmpbuf);
wdenkaffae2b2002-08-17 09:36:01 +00001128 usb_set_maxpacket(dev);
Simon Glass0ed27902015-03-25 12:22:07 -06001129 /*
1130 * we set the default configuration here
1131 * This seems premature. If the driver wants a different configuration
1132 * it will need to select itself.
1133 */
1134 err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue);
1135 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001136 printf("failed to set default configuration " \
1137 "len %d, status %lX\n", dev->act_len, dev->status);
Simon Glass0ed27902015-03-25 12:22:07 -06001138 return err;
wdenkaffae2b2002-08-17 09:36:01 +00001139 }
Marek Vasutf647bf02016-04-27 03:08:12 +02001140
1141 /*
1142 * Wait until the Set Configuration request gets processed by the
1143 * device. This is required by at least SanDisk Cruzer Pop USB 2.0
1144 * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller.
1145 */
1146 mdelay(10);
1147
Vivek Gautamceb49722013-04-12 16:34:33 +05301148 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1149 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1150 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +00001151 memset(dev->mf, 0, sizeof(dev->mf));
1152 memset(dev->prod, 0, sizeof(dev->prod));
1153 memset(dev->serial, 0, sizeof(dev->serial));
1154 if (dev->descriptor.iManufacturer)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001155 usb_string(dev, dev->descriptor.iManufacturer,
1156 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +00001157 if (dev->descriptor.iProduct)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001158 usb_string(dev, dev->descriptor.iProduct,
1159 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +00001160 if (dev->descriptor.iSerialNumber)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001161 usb_string(dev, dev->descriptor.iSerialNumber,
1162 dev->serial, sizeof(dev->serial));
Vivek Gautamceb49722013-04-12 16:34:33 +05301163 debug("Manufacturer %s\n", dev->mf);
1164 debug("Product %s\n", dev->prod);
1165 debug("SerialNumber %s\n", dev->serial);
Simon Glass0ed27902015-03-25 12:22:07 -06001166
1167 return 0;
1168}
1169
Simon Glass95fbfe42015-03-25 12:22:08 -06001170int usb_setup_device(struct usb_device *dev, bool do_read,
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001171 struct usb_device *parent)
Simon Glass0ed27902015-03-25 12:22:07 -06001172{
1173 int addr;
1174 int ret;
1175
1176 /* We still haven't set the Address yet */
1177 addr = dev->devnum;
1178 dev->devnum = 0;
1179
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001180 ret = usb_prepare_device(dev, addr, do_read, parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001181 if (ret)
1182 return ret;
1183 ret = usb_select_config(dev);
1184
1185 return ret;
1186}
1187
Sven Schwermerfd09c202018-11-21 08:43:56 +01001188#if !CONFIG_IS_ENABLED(DM_USB)
Simon Glass0ed27902015-03-25 12:22:07 -06001189/*
1190 * By the time we get here, the device has gotten a new device ID
1191 * and is in the default state. We need to identify the thing and
1192 * get the ball rolling..
1193 *
1194 * Returns 0 for success, != 0 for error.
1195 */
1196int usb_new_device(struct usb_device *dev)
1197{
1198 bool do_read = true;
1199 int err;
1200
1201 /*
1202 * XHCI needs to issue a Address device command to setup
1203 * proper device context structures, before it can interact
1204 * with the device. So a get_descriptor will fail before any
1205 * of that is done for XHCI unlike EHCI.
1206 */
Masahiro Yamada0a8cc1a2016-06-04 07:35:03 +09001207#ifdef CONFIG_USB_XHCI_HCD
Simon Glass0ed27902015-03-25 12:22:07 -06001208 do_read = false;
1209#endif
Hans de Goede9eb72dd2015-06-17 21:33:46 +02001210 err = usb_setup_device(dev, do_read, dev->parent);
Simon Glass0ed27902015-03-25 12:22:07 -06001211 if (err)
1212 return err;
1213
1214 /* Now probe if the device is a hub */
1215 err = usb_hub_probe(dev, 0);
1216 if (err < 0)
1217 return err;
1218
wdenkaffae2b2002-08-17 09:36:01 +00001219 return 0;
1220}
Simon Glass95fbfe42015-03-25 12:22:08 -06001221#endif
wdenkaffae2b2002-08-17 09:36:01 +00001222
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001223__weak
Troy Kiskybba67912013-10-10 15:27:55 -07001224int board_usb_init(int index, enum usb_init_type init)
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001225{
1226 return 0;
1227}
Kishon Vijay Abraham Idb378d72015-02-23 18:40:18 +05301228
1229__weak
1230int board_usb_cleanup(int index, enum usb_init_type init)
1231{
1232 return 0;
1233}
Simon Glass95fbfe42015-03-25 12:22:08 -06001234
1235bool usb_device_has_child_on_port(struct usb_device *parent, int port)
1236{
Sven Schwermerfd09c202018-11-21 08:43:56 +01001237#if CONFIG_IS_ENABLED(DM_USB)
Simon Glass95fbfe42015-03-25 12:22:08 -06001238 return false;
1239#else
1240 return parent->children[port] != NULL;
1241#endif
1242}
1243
Sven Schwermerfd09c202018-11-21 08:43:56 +01001244#if CONFIG_IS_ENABLED(DM_USB)
Stefan BrĂ¼nsfaa7db22015-12-22 01:21:03 +01001245void usb_find_usb2_hub_address_port(struct usb_device *udev,
1246 uint8_t *hub_address, uint8_t *hub_port)
1247{
1248 struct udevice *parent;
1249 struct usb_device *uparent, *ttdev;
1250
1251 /*
1252 * When called from usb-uclass.c: usb_scan_device() udev->dev points
1253 * to the parent udevice, not the actual udevice belonging to the
1254 * udev as the device is not instantiated yet. So when searching
1255 * for the first usb-2 parent start with udev->dev not
1256 * udev->dev->parent .
1257 */
1258 ttdev = udev;
1259 parent = udev->dev;
1260 uparent = dev_get_parent_priv(parent);
1261
1262 while (uparent->speed != USB_SPEED_HIGH) {
1263 struct udevice *dev = parent;
1264
1265 if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) {
1266 printf("Error: Cannot find high speed parent of usb-1 device\n");
1267 *hub_address = 0;
1268 *hub_port = 0;
1269 return;
1270 }
1271
1272 ttdev = dev_get_parent_priv(dev);
1273 parent = dev->parent;
1274 uparent = dev_get_parent_priv(parent);
1275 }
1276 *hub_address = uparent->devnum;
1277 *hub_port = ttdev->portnr;
1278}
1279#else
1280void usb_find_usb2_hub_address_port(struct usb_device *udev,
1281 uint8_t *hub_address, uint8_t *hub_port)
1282{
1283 /* Find out the nearest parent which is high speed */
1284 while (udev->parent->parent != NULL)
1285 if (udev->parent->speed != USB_SPEED_HIGH) {
1286 udev = udev->parent;
1287 } else {
1288 *hub_address = udev->parent->devnum;
1289 *hub_port = udev->portnr;
1290 return;
1291 }
1292
1293 printf("Error: Cannot find high speed parent of usb-1 device\n");
1294 *hub_address = 0;
1295 *hub_port = 0;
1296}
1297#endif
1298
1299
wdenkaffae2b2002-08-17 09:36:01 +00001300/* EOF */