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wdenkaffae2b2002-08-17 09:36:01 +00001/*
wdenkaffae2b2002-08-17 09:36:01 +00002 *
3 * 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 * See file CREDITS for list of people who contributed to this
19 * project.
20 *
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU General Public License as
23 * published by the Free Software Foundation; either version 2 of
24 * the License, or (at your option) any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 * MA 02111-1307 USA
35 *
36 */
37
wdenkaffae2b2002-08-17 09:36:01 +000038/*
39 * How it works:
40 *
41 * Since this is a bootloader, the devices will not be automatic
42 * (re)configured on hotplug, but after a restart of the USB the
43 * device should work.
44 *
45 * For each transfer (except "Interrupt") we wait for completion.
46 */
47#include <common.h>
48#include <command.h>
49#include <asm/processor.h>
Mike Frysinger66cf6412012-04-04 18:44:53 +000050#include <linux/compiler.h>
Wolfgang Denk9c998aa2005-07-21 11:57:57 +020051#include <linux/ctype.h>
Christian Eggersc9182612008-05-21 22:12:00 +020052#include <asm/byteorder.h>
Tom Rinib2fb47f2011-12-15 08:40:51 -070053#include <asm/unaligned.h>
wdenkaffae2b2002-08-17 09:36:01 +000054
wdenkaffae2b2002-08-17 09:36:01 +000055#include <usb.h>
56#ifdef CONFIG_4xx
Stefan Roese3048bcb2007-10-03 15:01:02 +020057#include <asm/4xx_pci.h>
wdenkaffae2b2002-08-17 09:36:01 +000058#endif
59
Alexander Hollerce297a82011-01-28 12:42:13 +010060#ifdef DEBUG
Marek Vasut88ec8c12011-10-25 11:39:14 +020061#define USB_DEBUG 1
62#define USB_HUB_DEBUG 1
63#else
64#define USB_DEBUG 0
65#define USB_HUB_DEBUG 0
Alexander Hollerce297a82011-01-28 12:42:13 +010066#endif
wdenkaffae2b2002-08-17 09:36:01 +000067
Marek Vasut88ec8c12011-10-25 11:39:14 +020068#define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args)
69#define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args)
wdenkaffae2b2002-08-17 09:36:01 +000070
wdenkcd0a9de2004-02-23 20:48:38 +000071#define USB_BUFSIZ 512
72
wdenkaffae2b2002-08-17 09:36:01 +000073static struct usb_device usb_dev[USB_MAX_DEVICE];
74static int dev_index;
75static int running;
76static int asynch_allowed;
wdenkaffae2b2002-08-17 09:36:01 +000077
Bartlomiej Siekae51aae32006-08-03 23:20:13 +020078char usb_started; /* flag for the started/stopped USB status */
79
wdenkaffae2b2002-08-17 09:36:01 +000080/**********************************************************************
81 * some forward declerations...
82 */
Marek Vasutc08b1b22012-02-13 18:58:16 +000083static void usb_scan_devices(void);
wdenkaffae2b2002-08-17 09:36:01 +000084
wdenkaffae2b2002-08-17 09:36:01 +000085/***************************************************************************
86 * Init USB Device
87 */
88
89int usb_init(void)
90{
91 int result;
92
Remy Bohmer6f5794a2008-09-16 14:55:43 +020093 running = 0;
94 dev_index = 0;
95 asynch_allowed = 1;
wdenkaffae2b2002-08-17 09:36:01 +000096 usb_hub_reset();
97 /* init low_level USB */
98 printf("USB: ");
99 result = usb_lowlevel_init();
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200100 /* if lowlevel init is OK, scan the bus for devices
101 * i.e. search HUBs and configure them */
102 if (result == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000103 printf("scanning bus for devices... ");
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200104 running = 1;
wdenkaffae2b2002-08-17 09:36:01 +0000105 usb_scan_devices();
Bartlomiej Siekae51aae32006-08-03 23:20:13 +0200106 usb_started = 1;
wdenkaffae2b2002-08-17 09:36:01 +0000107 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200108 } else {
wdenkaffae2b2002-08-17 09:36:01 +0000109 printf("Error, couldn't init Lowlevel part\n");
Bartlomiej Siekae51aae32006-08-03 23:20:13 +0200110 usb_started = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000111 return -1;
112 }
113}
114
115/******************************************************************************
116 * Stop USB this stops the LowLevel Part and deregisters USB devices.
117 */
118int usb_stop(void)
119{
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200120 int res = 0;
121
122 if (usb_started) {
123 asynch_allowed = 1;
124 usb_started = 0;
125 usb_hub_reset();
126 res = usb_lowlevel_stop();
127 }
128 return res;
wdenkaffae2b2002-08-17 09:36:01 +0000129}
130
131/*
132 * disables the asynch behaviour of the control message. This is used for data
133 * transfers that uses the exclusiv access to the control and bulk messages.
Simon Glass89d48362011-02-16 11:14:33 -0800134 * Returns the old value so it can be restored later.
wdenkaffae2b2002-08-17 09:36:01 +0000135 */
Simon Glass89d48362011-02-16 11:14:33 -0800136int usb_disable_asynch(int disable)
wdenkaffae2b2002-08-17 09:36:01 +0000137{
Simon Glass89d48362011-02-16 11:14:33 -0800138 int old_value = asynch_allowed;
139
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200140 asynch_allowed = !disable;
Simon Glass89d48362011-02-16 11:14:33 -0800141 return old_value;
wdenkaffae2b2002-08-17 09:36:01 +0000142}
143
144
145/*-------------------------------------------------------------------
146 * Message wrappers.
147 *
148 */
149
150/*
151 * submits an Interrupt Message
152 */
153int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200154 void *buffer, int transfer_len, int interval)
wdenkaffae2b2002-08-17 09:36:01 +0000155{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200156 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
wdenkaffae2b2002-08-17 09:36:01 +0000157}
158
159/*
160 * submits a control message and waits for comletion (at least timeout * 1ms)
161 * If timeout is 0, we don't wait for completion (used as example to set and
162 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
163 * allow control messages with 0 timeout, by previousely resetting the flag
164 * asynch_allowed (usb_disable_asynch(1)).
165 * returns the transfered length if OK or -1 if error. The transfered length
166 * and the current status are stored in the dev->act_len and dev->status.
167 */
168int usb_control_msg(struct usb_device *dev, unsigned int pipe,
169 unsigned char request, unsigned char requesttype,
170 unsigned short value, unsigned short index,
171 void *data, unsigned short size, int timeout)
172{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530173 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Marek Vasute159e482012-02-13 18:58:18 +0000174
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200175 if ((timeout == 0) && (!asynch_allowed)) {
176 /* request for a asynch control pipe is not allowed */
wdenkaffae2b2002-08-17 09:36:01 +0000177 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200178 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200179
wdenkaffae2b2002-08-17 09:36:01 +0000180 /* set setup command */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530181 setup_packet->requesttype = requesttype;
182 setup_packet->request = request;
183 setup_packet->value = cpu_to_le16(value);
184 setup_packet->index = cpu_to_le16(index);
185 setup_packet->length = cpu_to_le16(size);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200186 USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
187 "value 0x%X index 0x%X length 0x%X\n",
188 request, requesttype, value, index, size);
189 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000190
Puneet Saxenaf5766132012-04-03 14:56:06 +0530191 submit_control_msg(dev, pipe, data, size, setup_packet);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200192 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000193 return (int)size;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200194
Remy Bohmer84d36b32010-02-01 19:40:47 +0100195 /*
196 * Wait for status to update until timeout expires, USB driver
197 * interrupt handler may set the status when the USB operation has
198 * been completed.
199 */
200 while (timeout--) {
201 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
202 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000203 mdelay(1);
Remy Bohmer48867202008-10-10 10:23:21 +0200204 }
Remy Bohmer84d36b32010-02-01 19:40:47 +0100205 if (dev->status)
206 return -1;
Remy Bohmer48867202008-10-10 10:23:21 +0200207
208 return dev->act_len;
Remy Bohmer84d36b32010-02-01 19:40:47 +0100209
wdenkaffae2b2002-08-17 09:36:01 +0000210}
211
212/*-------------------------------------------------------------------
213 * submits bulk message, and waits for completion. returns 0 if Ok or
214 * -1 if Error.
215 * synchronous behavior
216 */
217int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
218 void *data, int len, int *actual_length, int timeout)
219{
220 if (len < 0)
221 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200222 dev->status = USB_ST_NOT_PROC; /*not yet processed */
223 submit_bulk_msg(dev, pipe, data, len);
224 while (timeout--) {
225 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000226 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000227 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000228 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200229 *actual_length = dev->act_len;
230 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000231 return 0;
232 else
233 return -1;
234}
235
236
237/*-------------------------------------------------------------------
238 * Max Packet stuff
239 */
240
241/*
242 * returns the max packet size, depending on the pipe direction and
243 * the configurations values
244 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200245int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000246{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200247 /* direction is out -> use emaxpacket out */
248 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100249 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000250 else
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100251 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000252}
253
Marek Vasut5e8baf82011-11-05 23:35:12 +0100254/*
255 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmerbe19d322008-09-16 14:55:42 +0200256 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
257 * when it is inlined in 1 single routine. What happens is that the register r3
258 * is used as loop-count 'i', but gets overwritten later on.
259 * This is clearly a compiler bug, but it is easier to workaround it here than
260 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
261 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100262 *
263 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmerbe19d322008-09-16 14:55:42 +0200264 */
Mike Frysinger66cf6412012-04-04 18:44:53 +0000265static void noinline
Marek Vasut5e8baf82011-11-05 23:35:12 +0100266usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmerbe19d322008-09-16 14:55:42 +0200267{
268 int b;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100269 struct usb_endpoint_descriptor *ep;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700270 u16 ep_wMaxPacketSize;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100271
272 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmerbe19d322008-09-16 14:55:42 +0200273
274 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700275 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200276
277 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
278 USB_ENDPOINT_XFER_CONTROL) {
279 /* Control => bidirectional */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700280 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
281 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Remy Bohmerbe19d322008-09-16 14:55:42 +0200282 USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n",
283 b, dev->epmaxpacketin[b]);
284 } else {
285 if ((ep->bEndpointAddress & 0x80) == 0) {
286 /* OUT Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700287 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
288 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Remy Bohmerbe19d322008-09-16 14:55:42 +0200289 USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",
290 b, dev->epmaxpacketout[b]);
291 }
292 } else {
293 /* IN Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700294 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
295 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Remy Bohmerbe19d322008-09-16 14:55:42 +0200296 USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",
297 b, dev->epmaxpacketin[b]);
298 }
299 } /* if out */
300 } /* if control */
301}
302
wdenkaffae2b2002-08-17 09:36:01 +0000303/*
304 * set the max packed value of all endpoints in the given configuration
305 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000306static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000307{
Remy Bohmerbe19d322008-09-16 14:55:42 +0200308 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000309
Tom Rix8f8bd562009-10-31 12:37:38 -0500310 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
311 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100312 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000313
wdenkaffae2b2002-08-17 09:36:01 +0000314 return 0;
315}
316
317/*******************************************************************************
318 * Parse the config, located in buffer, and fills the dev->config structure.
319 * Note that all little/big endian swapping are done automatically.
320 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000321static int usb_parse_config(struct usb_device *dev,
322 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000323{
324 struct usb_descriptor_header *head;
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200325 int index, ifno, epno, curr_if_num;
326 int i;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700327 u16 ep_wMaxPacketSize;
wdenkaffae2b2002-08-17 09:36:01 +0000328
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200329 ifno = -1;
330 epno = -1;
331 curr_if_num = -1;
332
333 dev->configno = cfgno;
334 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200335 if (head->bDescriptorType != USB_DT_CONFIG) {
336 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
337 head->bDescriptorType);
wdenkaffae2b2002-08-17 09:36:01 +0000338 return -1;
339 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200340 memcpy(&dev->config, buffer, buffer[0]);
Tom Rix8f8bd562009-10-31 12:37:38 -0500341 le16_to_cpus(&(dev->config.desc.wTotalLength));
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200342 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000343
Tom Rix8f8bd562009-10-31 12:37:38 -0500344 index = dev->config.desc.bLength;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200345 /* Ok the first entry must be a configuration entry,
346 * now process the others */
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200347 head = (struct usb_descriptor_header *) &buffer[index];
Tom Rix8f8bd562009-10-31 12:37:38 -0500348 while (index + 1 < dev->config.desc.wTotalLength) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200349 switch (head->bDescriptorType) {
350 case USB_DT_INTERFACE:
351 if (((struct usb_interface_descriptor *) \
352 &buffer[index])->bInterfaceNumber != curr_if_num) {
353 /* this is a new interface, copy new desc */
354 ifno = dev->config.no_of_if;
355 dev->config.no_of_if++;
356 memcpy(&dev->config.if_desc[ifno],
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200357 &buffer[index], buffer[index]);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200358 dev->config.if_desc[ifno].no_of_ep = 0;
359 dev->config.if_desc[ifno].num_altsetting = 1;
360 curr_if_num =
Tom Rix8f8bd562009-10-31 12:37:38 -0500361 dev->config.if_desc[ifno].desc.bInterfaceNumber;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200362 } else {
363 /* found alternate setting for the interface */
364 dev->config.if_desc[ifno].num_altsetting++;
365 }
366 break;
367 case USB_DT_ENDPOINT:
368 epno = dev->config.if_desc[ifno].no_of_ep;
369 /* found an endpoint */
370 dev->config.if_desc[ifno].no_of_ep++;
371 memcpy(&dev->config.if_desc[ifno].ep_desc[epno],
372 &buffer[index], buffer[index]);
Tom Rinib2fb47f2011-12-15 08:40:51 -0700373 ep_wMaxPacketSize = get_unaligned(&dev->config.\
374 if_desc[ifno].\
375 ep_desc[epno].\
376 wMaxPacketSize);
377 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
378 &dev->config.\
379 if_desc[ifno].\
380 ep_desc[epno].\
381 wMaxPacketSize);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200382 USB_PRINTF("if %d, ep %d\n", ifno, epno);
383 break;
384 default:
385 if (head->bLength == 0)
386 return 1;
387
388 USB_PRINTF("unknown Description Type : %x\n",
389 head->bDescriptorType);
390
391 {
Wolfgang Denkfad2e1b2011-10-05 23:11:19 +0200392#ifdef USB_DEBUG
393 unsigned char *ch = (unsigned char *)head;
394#endif
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200395 for (i = 0; i < head->bLength; i++)
396 USB_PRINTF("%02X ", *ch++);
397 USB_PRINTF("\n\n\n");
398 }
399 break;
wdenkaffae2b2002-08-17 09:36:01 +0000400 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200401 index += head->bLength;
402 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000403 }
404 return 1;
405}
406
407/***********************************************************************
408 * Clears an endpoint
409 * endp: endpoint number in bits 0-3;
410 * direction flag in bit 7 (1 = IN, 0 = OUT)
411 */
412int usb_clear_halt(struct usb_device *dev, int pipe)
413{
414 int result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200415 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000416
417 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200418 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
419 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000420
421 /* don't clear if failed */
422 if (result < 0)
423 return result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200424
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200425 /*
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200426 * NOTE: we do not get status and verify reset was successful
427 * as some devices are reported to lock up upon this check..
428 */
429
wdenkaffae2b2002-08-17 09:36:01 +0000430 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200431
wdenkaffae2b2002-08-17 09:36:01 +0000432 /* toggle is reset on clear */
433 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
434 return 0;
435}
436
437
438/**********************************************************************
439 * get_descriptor type
440 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000441static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200442 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000443{
444 int res;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200445 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
wdenkaffae2b2002-08-17 09:36:01 +0000446 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
447 (type << 8) + index, 0,
448 buf, size, USB_CNTL_TIMEOUT);
449 return res;
450}
451
452/**********************************************************************
453 * gets configuration cfgno and store it in the buffer
454 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200455int usb_get_configuration_no(struct usb_device *dev,
456 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000457{
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200458 int result;
wdenkaffae2b2002-08-17 09:36:01 +0000459 unsigned int tmp;
Tom Rix8f8bd562009-10-31 12:37:38 -0500460 struct usb_configuration_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000461
Tom Rix8f8bd562009-10-31 12:37:38 -0500462 config = (struct usb_configuration_descriptor *)&buffer[0];
Remy Bohmer48867202008-10-10 10:23:21 +0200463 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
464 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000465 if (result < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200466 printf("unable to get descriptor, error %lX\n",
467 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000468 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200469 printf("config descriptor too short " \
Remy Bohmer48867202008-10-10 10:23:21 +0200470 "(expected %i, got %i)\n", 9, result);
wdenkaffae2b2002-08-17 09:36:01 +0000471 return -1;
472 }
Christian Eggersc9182612008-05-21 22:12:00 +0200473 tmp = le16_to_cpu(config->wTotalLength);
wdenkaffae2b2002-08-17 09:36:01 +0000474
wdenkcd0a9de2004-02-23 20:48:38 +0000475 if (tmp > USB_BUFSIZ) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200476 USB_PRINTF("usb_get_configuration_no: failed to get " \
477 "descriptor - too long: %d\n", tmp);
wdenkcd0a9de2004-02-23 20:48:38 +0000478 return -1;
479 }
480
wdenkaffae2b2002-08-17 09:36:01 +0000481 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200482 USB_PRINTF("get_conf_no %d Result %d, wLength %d\n",
483 cfgno, result, tmp);
wdenkaffae2b2002-08-17 09:36:01 +0000484 return result;
485}
486
487/********************************************************************
488 * set address of a device to the value in dev->devnum.
489 * This can only be done by addressing the device via the default address (0)
490 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000491static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000492{
493 int res;
494
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200495 USB_PRINTF("set address %d\n", dev->devnum);
496 res = usb_control_msg(dev, usb_snddefctrl(dev),
497 USB_REQ_SET_ADDRESS, 0,
498 (dev->devnum), 0,
499 NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000500 return res;
501}
502
503/********************************************************************
504 * set interface number to interface
505 */
506int usb_set_interface(struct usb_device *dev, int interface, int alternate)
507{
Tom Rix8f8bd562009-10-31 12:37:38 -0500508 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000509 int ret, i;
510
Tom Rix8f8bd562009-10-31 12:37:38 -0500511 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
512 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000513 if_face = &dev->config.if_desc[i];
514 break;
515 }
516 }
517 if (!if_face) {
518 printf("selecting invalid interface %d", interface);
519 return -1;
520 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200521 /*
522 * We should return now for devices with only one alternate setting.
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200523 * According to 9.4.10 of the Universal Serial Bus Specification
524 * Revision 2.0 such devices can return with a STALL. This results in
525 * some USB sticks timeouting during initialization and then being
526 * unusable in U-Boot.
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200527 */
528 if (if_face->num_altsetting == 1)
529 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000530
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200531 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
532 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
533 alternate, interface, NULL, 0,
534 USB_CNTL_TIMEOUT * 5);
535 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000536 return ret;
537
wdenkaffae2b2002-08-17 09:36:01 +0000538 return 0;
539}
540
541/********************************************************************
542 * set configuration number to configuration
543 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000544static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000545{
546 int res;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200547 USB_PRINTF("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000548 /* set setup command */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200549 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
550 USB_REQ_SET_CONFIGURATION, 0,
551 configuration, 0,
552 NULL, 0, USB_CNTL_TIMEOUT);
553 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000554 dev->toggle[0] = 0;
555 dev->toggle[1] = 0;
556 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200557 } else
wdenkaffae2b2002-08-17 09:36:01 +0000558 return -1;
559}
560
561/********************************************************************
562 * set protocol to protocol
563 */
564int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
565{
566 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
567 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
568 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
569}
570
571/********************************************************************
572 * set idle
573 */
574int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
575{
576 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
577 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
578 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
579}
580
581/********************************************************************
582 * get report
583 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200584int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
585 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000586{
587 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200588 USB_REQ_GET_REPORT,
589 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
590 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000591}
592
593/********************************************************************
594 * get class descriptor
595 */
596int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
597 unsigned char type, unsigned char id, void *buf, int size)
598{
599 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
600 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
601 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
602}
603
604/********************************************************************
605 * get string index in buffer
606 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000607static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200608 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000609{
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200610 int i;
611 int result;
612
613 for (i = 0; i < 3; ++i) {
614 /* some devices are flaky */
615 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
616 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200617 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200618 USB_CNTL_TIMEOUT);
619
620 if (result > 0)
621 break;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200622 }
623
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200624 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000625}
626
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200627
628static void usb_try_string_workarounds(unsigned char *buf, int *length)
629{
630 int newlength, oldlength = *length;
631
632 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
633 if (!isprint(buf[newlength]) || buf[newlength + 1])
634 break;
635
636 if (newlength > 2) {
637 buf[0] = newlength;
638 *length = newlength;
639 }
640}
641
642
643static int usb_string_sub(struct usb_device *dev, unsigned int langid,
644 unsigned int index, unsigned char *buf)
645{
646 int rc;
647
648 /* Try to read the string descriptor by asking for the maximum
649 * possible number of bytes */
650 rc = usb_get_string(dev, langid, index, buf, 255);
651
652 /* If that failed try to read the descriptor length, then
653 * ask for just that many bytes */
654 if (rc < 2) {
655 rc = usb_get_string(dev, langid, index, buf, 2);
656 if (rc == 2)
657 rc = usb_get_string(dev, langid, index, buf, buf[0]);
658 }
659
660 if (rc >= 2) {
661 if (!buf[0] && !buf[1])
662 usb_try_string_workarounds(buf, &rc);
663
664 /* There might be extra junk at the end of the descriptor */
665 if (buf[0] < rc)
666 rc = buf[0];
667
668 rc = rc - (rc & 1); /* force a multiple of two */
669 }
670
671 if (rc < 2)
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200672 rc = -1;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200673
674 return rc;
675}
676
677
wdenkaffae2b2002-08-17 09:36:01 +0000678/********************************************************************
679 * usb_string:
680 * Get string index and translate it to ascii.
681 * returns string length (> 0) or error (< 0)
682 */
683int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
684{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530685 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000686 unsigned char *tbuf;
687 int err;
688 unsigned int u, idx;
689
690 if (size <= 0 || !buf || !index)
691 return -1;
692 buf[0] = 0;
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200693 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000694
695 /* get langid for strings if it's not yet known */
696 if (!dev->have_langid) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200697 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000698 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200699 USB_PRINTF("error getting string descriptor 0 " \
Stefan Roesef1c1f542009-01-22 10:11:21 +0100700 "(error=%lx)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000701 return -1;
702 } else if (tbuf[0] < 4) {
703 USB_PRINTF("string descriptor 0 too short\n");
704 return -1;
705 } else {
706 dev->have_langid = -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200707 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000708 /* always use the first langid listed */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200709 USB_PRINTF("USB device number %d default " \
710 "language ID 0x%x\n",
711 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000712 }
713 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200714
715 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000716 if (err < 0)
717 return err;
wdenkcd0a9de2004-02-23 20:48:38 +0000718
wdenkaffae2b2002-08-17 09:36:01 +0000719 size--; /* leave room for trailing NULL char in output buffer */
720 for (idx = 0, u = 2; u < err; u += 2) {
721 if (idx >= size)
722 break;
723 if (tbuf[u+1]) /* high byte */
724 buf[idx++] = '?'; /* non-ASCII character */
725 else
726 buf[idx++] = tbuf[u];
727 }
728 buf[idx] = 0;
729 err = idx;
730 return err;
731}
732
733
734/********************************************************************
735 * USB device handling:
736 * the USB device are static allocated [USB_MAX_DEVICE].
737 */
738
739
740/* returns a pointer to the device with the index [index].
741 * if the device is not assigned (dev->devnum==-1) returns NULL
742 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200743struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000744{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200745 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000746 return NULL;
747 else
748 return &usb_dev[index];
749}
750
751
752/* returns a pointer of a new device structure or NULL, if
753 * no device struct is available
754 */
Marek Vasut23faf2b2012-02-13 18:58:17 +0000755struct usb_device *usb_alloc_new_device(void)
wdenkaffae2b2002-08-17 09:36:01 +0000756{
757 int i;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200758 USB_PRINTF("New Device %d\n", dev_index);
759 if (dev_index == USB_MAX_DEVICE) {
760 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
wdenkaffae2b2002-08-17 09:36:01 +0000761 return NULL;
762 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200763 /* default Address is 0, real addresses start with 1 */
764 usb_dev[dev_index].devnum = dev_index + 1;
765 usb_dev[dev_index].maxchild = 0;
766 for (i = 0; i < USB_MAXCHILDREN; i++)
767 usb_dev[dev_index].children[i] = NULL;
768 usb_dev[dev_index].parent = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000769 dev_index++;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200770 return &usb_dev[dev_index - 1];
wdenkaffae2b2002-08-17 09:36:01 +0000771}
772
773
774/*
775 * By the time we get here, the device has gotten a new device ID
776 * and is in the default state. We need to identify the thing and
777 * get the ball rolling..
778 *
779 * Returns 0 for success, != 0 for error.
780 */
Marek Vasut23faf2b2012-02-13 18:58:17 +0000781int usb_new_device(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000782{
783 int addr, err;
784 int tmp;
Puneet Saxenaf5766132012-04-03 14:56:06 +0530785 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000786
wdenkaffae2b2002-08-17 09:36:01 +0000787 /* We still haven't set the Address yet */
788 addr = dev->devnum;
789 dev->devnum = 0;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200790
Remy Bohmerc9e84362008-09-16 14:55:44 +0200791#ifdef CONFIG_LEGACY_USB_INIT_SEQ
792 /* this is the old and known way of initializing devices, it is
793 * different than what Windows and Linux are doing. Windows and Linux
794 * both retrieve 64 bytes while reading the device descriptor
795 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
796 * invalid header while reading 8 bytes as device descriptor. */
797 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
Remy Bohmer48867202008-10-10 10:23:21 +0200798 dev->maxpacketsize = PACKET_SIZE_8;
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100799 dev->epmaxpacketin[0] = 8;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200800 dev->epmaxpacketout[0] = 8;
801
802 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8);
803 if (err < 8) {
804 printf("\n USB device not responding, " \
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100805 "giving up (status=%lX)\n", dev->status);
Remy Bohmerc9e84362008-09-16 14:55:44 +0200806 return 1;
807 }
808#else
Remy Bohmer48867202008-10-10 10:23:21 +0200809 /* This is a Windows scheme of initialization sequence, with double
810 * reset of the device (Linux uses the same sequence)
Remy Bohmerc9e84362008-09-16 14:55:44 +0200811 * Some equipment is said to work only with such init sequence; this
812 * patch is based on the work by Alan Stern:
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100813 * http://sourceforge.net/mailarchive/forum.php?
814 * thread_id=5729457&forum_id=5398
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200815 */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200816 struct usb_device_descriptor *desc;
817 int port = -1;
818 struct usb_device *parent = dev->parent;
819 unsigned short portstatus;
820
821 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
822 * only 18 bytes long, this will terminate with a short packet. But if
823 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Remy Bohmerc9e84362008-09-16 14:55:44 +0200824 * some more, or keeps on retransmitting the 8 byte header. */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200825
826 desc = (struct usb_device_descriptor *)tmpbuf;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200827 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
Remy Bohmer48867202008-10-10 10:23:21 +0200828 /* Default to 64 byte max packet size */
829 dev->maxpacketsize = PACKET_SIZE_64;
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100830 dev->epmaxpacketin[0] = 64;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200831 dev->epmaxpacketout[0] = 64;
Remy Bohmer48867202008-10-10 10:23:21 +0200832
833 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
834 if (err < 0) {
835 USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n");
836 return 1;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200837 }
Remy Bohmer48867202008-10-10 10:23:21 +0200838
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200839 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200840
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200841 /* find the port number we're at */
842 if (parent) {
Remy Bohmer48867202008-10-10 10:23:21 +0200843 int j;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200844
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200845 for (j = 0; j < parent->maxchild; j++) {
846 if (parent->children[j] == dev) {
847 port = j;
848 break;
849 }
850 }
851 if (port < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200852 printf("usb_new_device:cannot locate device's port.\n");
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200853 return 1;
854 }
855
856 /* reset the port for the second time */
857 err = hub_port_reset(dev->parent, port, &portstatus);
858 if (err < 0) {
859 printf("\n Couldn't reset port %i\n", port);
860 return 1;
861 }
862 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200863#endif
864
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100865 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +0000866 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
867 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100868 case 8:
869 dev->maxpacketsize = PACKET_SIZE_8;
870 break;
871 case 16:
872 dev->maxpacketsize = PACKET_SIZE_16;
873 break;
874 case 32:
875 dev->maxpacketsize = PACKET_SIZE_32;
876 break;
877 case 64:
878 dev->maxpacketsize = PACKET_SIZE_64;
879 break;
wdenkaffae2b2002-08-17 09:36:01 +0000880 }
881 dev->devnum = addr;
882
883 err = usb_set_address(dev); /* set address */
884
885 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200886 printf("\n USB device not accepting new address " \
887 "(error=%lX)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000888 return 1;
889 }
890
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000891 mdelay(10); /* Let the SET_ADDRESS settle */
wdenkaffae2b2002-08-17 09:36:01 +0000892
893 tmp = sizeof(dev->descriptor);
894
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200895 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
896 &dev->descriptor, sizeof(dev->descriptor));
wdenkaffae2b2002-08-17 09:36:01 +0000897 if (err < tmp) {
898 if (err < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200899 printf("unable to get device descriptor (error=%d)\n",
900 err);
wdenkaffae2b2002-08-17 09:36:01 +0000901 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200902 printf("USB device descriptor short read " \
903 "(expected %i, got %i)\n", tmp, err);
wdenkaffae2b2002-08-17 09:36:01 +0000904 return 1;
905 }
906 /* correct le values */
Christian Eggersc9182612008-05-21 22:12:00 +0200907 le16_to_cpus(&dev->descriptor.bcdUSB);
908 le16_to_cpus(&dev->descriptor.idVendor);
909 le16_to_cpus(&dev->descriptor.idProduct);
910 le16_to_cpus(&dev->descriptor.bcdDevice);
wdenkaffae2b2002-08-17 09:36:01 +0000911 /* only support for one config for now */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530912 usb_get_configuration_no(dev, tmpbuf, 0);
913 usb_parse_config(dev, tmpbuf, 0);
wdenkaffae2b2002-08-17 09:36:01 +0000914 usb_set_maxpacket(dev);
915 /* we set the default configuration here */
Tom Rix8f8bd562009-10-31 12:37:38 -0500916 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200917 printf("failed to set default configuration " \
918 "len %d, status %lX\n", dev->act_len, dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000919 return -1;
920 }
921 USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200922 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
923 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +0000924 memset(dev->mf, 0, sizeof(dev->mf));
925 memset(dev->prod, 0, sizeof(dev->prod));
926 memset(dev->serial, 0, sizeof(dev->serial));
927 if (dev->descriptor.iManufacturer)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200928 usb_string(dev, dev->descriptor.iManufacturer,
929 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +0000930 if (dev->descriptor.iProduct)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200931 usb_string(dev, dev->descriptor.iProduct,
932 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +0000933 if (dev->descriptor.iSerialNumber)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200934 usb_string(dev, dev->descriptor.iSerialNumber,
935 dev->serial, sizeof(dev->serial));
wdenkaffae2b2002-08-17 09:36:01 +0000936 USB_PRINTF("Manufacturer %s\n", dev->mf);
937 USB_PRINTF("Product %s\n", dev->prod);
938 USB_PRINTF("SerialNumber %s\n", dev->serial);
939 /* now prode if the device is a hub */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200940 usb_hub_probe(dev, 0);
wdenkaffae2b2002-08-17 09:36:01 +0000941 return 0;
942}
943
944/* build device Tree */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000945static void usb_scan_devices(void)
wdenkaffae2b2002-08-17 09:36:01 +0000946{
947 int i;
948 struct usb_device *dev;
949
950 /* first make all devices unknown */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200951 for (i = 0; i < USB_MAX_DEVICE; i++) {
952 memset(&usb_dev[i], 0, sizeof(struct usb_device));
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200953 usb_dev[i].devnum = -1;
wdenkaffae2b2002-08-17 09:36:01 +0000954 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200955 dev_index = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000956 /* device 0 is always present (root hub, so let it analyze) */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200957 dev = usb_alloc_new_device();
Bryan Wu1a448db2009-01-18 23:04:27 -0500958 if (usb_new_device(dev))
959 printf("No USB Device found\n");
960 else
961 printf("%d USB Device(s) found\n", dev_index);
wdenkaffae2b2002-08-17 09:36:01 +0000962 /* insert "driver" if possible */
963#ifdef CONFIG_USB_KEYBOARD
964 drv_usb_kbd_init();
wdenkaffae2b2002-08-17 09:36:01 +0000965#endif
Marek Vasut2a94dda2011-07-12 02:16:46 +0200966 USB_PRINTF("scan end\n");
wdenkaffae2b2002-08-17 09:36:01 +0000967}
968
wdenkaffae2b2002-08-17 09:36:01 +0000969/* EOF */