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wdenkaffae2b2002-08-17 09:36:01 +00001/*
wdenkaffae2b2002-08-17 09:36:01 +00002 * Most of this source has been derived from the Linux USB
Wolfgang Denk6a3d6b02005-08-04 01:14:12 +02003 * project:
4 * (C) Copyright Linus Torvalds 1999
5 * (C) Copyright Johannes Erdfelt 1999-2001
6 * (C) Copyright Andreas Gal 1999
7 * (C) Copyright Gregory P. Smith 1999
8 * (C) Copyright Deti Fliegl 1999 (new USB architecture)
9 * (C) Copyright Randy Dunlap 2000
10 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
11 * (C) Copyright Yggdrasil Computing, Inc. 2000
12 * (usb_device_id matching changes by Adam J. Richter)
13 *
14 * Adapted for U-Boot:
15 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
wdenkaffae2b2002-08-17 09:36:01 +000016 *
Wolfgang Denkd79de1d2013-07-08 09:37:19 +020017 * SPDX-License-Identifier: GPL-2.0+
wdenkaffae2b2002-08-17 09:36:01 +000018 */
19
wdenkaffae2b2002-08-17 09:36:01 +000020/*
21 * How it works:
22 *
23 * Since this is a bootloader, the devices will not be automatic
24 * (re)configured on hotplug, but after a restart of the USB the
25 * device should work.
26 *
27 * For each transfer (except "Interrupt") we wait for completion.
28 */
29#include <common.h>
30#include <command.h>
31#include <asm/processor.h>
Mike Frysinger6d311142012-04-04 18:44:53 +000032#include <linux/compiler.h>
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +020033#include <linux/ctype.h>
Christian Eggers4e0e8d02008-05-21 22:12:00 +020034#include <asm/byteorder.h>
Tom Rini73424522011-12-15 08:40:51 -070035#include <asm/unaligned.h>
wdenkaffae2b2002-08-17 09:36:01 +000036
wdenkaffae2b2002-08-17 09:36:01 +000037#include <usb.h>
38#ifdef CONFIG_4xx
Stefan Roeseca8725f2007-10-03 15:01:02 +020039#include <asm/4xx_pci.h>
wdenkaffae2b2002-08-17 09:36:01 +000040#endif
41
wdenkf70cbb22004-02-23 20:48:38 +000042#define USB_BUFSIZ 512
43
wdenkaffae2b2002-08-17 09:36:01 +000044static struct usb_device usb_dev[USB_MAX_DEVICE];
45static int dev_index;
wdenkaffae2b2002-08-17 09:36:01 +000046static int asynch_allowed;
wdenkaffae2b2002-08-17 09:36:01 +000047
Bartlomiej Siekae39589f2006-08-03 23:20:13 +020048char usb_started; /* flag for the started/stopped USB status */
49
Lucas Stache6d33452012-09-26 00:14:36 +020050#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
51#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
52#endif
wdenkaffae2b2002-08-17 09:36:01 +000053
wdenkaffae2b2002-08-17 09:36:01 +000054/***************************************************************************
55 * Init USB Device
56 */
wdenkaffae2b2002-08-17 09:36:01 +000057int usb_init(void)
58{
Lucas Stache6d33452012-09-26 00:14:36 +020059 void *ctrl;
60 struct usb_device *dev;
61 int i, start_index = 0;
wdenkaffae2b2002-08-17 09:36:01 +000062
Remy Bohmer172a1132008-09-16 14:55:43 +020063 dev_index = 0;
64 asynch_allowed = 1;
wdenkaffae2b2002-08-17 09:36:01 +000065 usb_hub_reset();
Lucas Stache6d33452012-09-26 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 Stache6d33452012-09-26 00:14:36 +020074 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
75 /* init low_level USB */
76 printf("USB%d: ", i);
77 if (usb_lowlevel_init(i, &ctrl)) {
78 puts("lowlevel init failed\n");
79 continue;
80 }
81 /*
82 * lowlevel init is OK, now scan the bus for devices
83 * i.e. search HUBs and configure them
84 */
85 start_index = dev_index;
86 printf("scanning bus %d for devices... ", i);
87 dev = usb_alloc_new_device(ctrl);
88 /*
89 * device 0 is always present
90 * (root hub, so let it analyze)
91 */
92 if (dev)
93 usb_new_device(dev);
94
95 if (start_index == dev_index)
96 puts("No USB Device found\n");
97 else
98 printf("%d USB Device(s) found\n",
99 dev_index - start_index);
100
Bartlomiej Siekae39589f2006-08-03 23:20:13 +0200101 usb_started = 1;
Lucas Stache6d33452012-09-26 00:14:36 +0200102 }
103
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530104 debug("scan end\n");
Lucas Stache6d33452012-09-26 00:14:36 +0200105 /* if we were not able to find at least one working bus, bail out */
106 if (!usb_started) {
107 puts("USB error: all controllers failed lowlevel init\n");
wdenkaffae2b2002-08-17 09:36:01 +0000108 return -1;
109 }
Lucas Stache6d33452012-09-26 00:14:36 +0200110
111 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000112}
113
114/******************************************************************************
115 * Stop USB this stops the LowLevel Part and deregisters USB devices.
116 */
117int usb_stop(void)
118{
Lucas Stache6d33452012-09-26 00:14:36 +0200119 int i;
Remy Bohmer743dd492008-08-20 11:22:02 +0200120
121 if (usb_started) {
122 asynch_allowed = 1;
123 usb_started = 0;
124 usb_hub_reset();
Lucas Stache6d33452012-09-26 00:14:36 +0200125
126 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
127 if (usb_lowlevel_stop(i))
128 printf("failed to stop USB controller %d\n", i);
129 }
Remy Bohmer743dd492008-08-20 11:22:02 +0200130 }
Lucas Stache6d33452012-09-26 00:14:36 +0200131
132 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000133}
134
135/*
136 * disables the asynch behaviour of the control message. This is used for data
137 * transfers that uses the exclusiv access to the control and bulk messages.
Simon Glass1e9961d2011-02-16 11:14:33 -0800138 * Returns the old value so it can be restored later.
wdenkaffae2b2002-08-17 09:36:01 +0000139 */
Simon Glass1e9961d2011-02-16 11:14:33 -0800140int usb_disable_asynch(int disable)
wdenkaffae2b2002-08-17 09:36:01 +0000141{
Simon Glass1e9961d2011-02-16 11:14:33 -0800142 int old_value = asynch_allowed;
143
Remy Bohmer172a1132008-09-16 14:55:43 +0200144 asynch_allowed = !disable;
Simon Glass1e9961d2011-02-16 11:14:33 -0800145 return old_value;
wdenkaffae2b2002-08-17 09:36:01 +0000146}
147
148
149/*-------------------------------------------------------------------
150 * Message wrappers.
151 *
152 */
153
154/*
155 * submits an Interrupt Message
156 */
157int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
Remy Bohmer172a1132008-09-16 14:55:43 +0200158 void *buffer, int transfer_len, int interval)
wdenkaffae2b2002-08-17 09:36:01 +0000159{
Remy Bohmer172a1132008-09-16 14:55:43 +0200160 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
wdenkaffae2b2002-08-17 09:36:01 +0000161}
162
163/*
164 * submits a control message and waits for comletion (at least timeout * 1ms)
165 * If timeout is 0, we don't wait for completion (used as example to set and
166 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
167 * allow control messages with 0 timeout, by previousely resetting the flag
168 * asynch_allowed (usb_disable_asynch(1)).
169 * returns the transfered length if OK or -1 if error. The transfered length
170 * and the current status are stored in the dev->act_len and dev->status.
171 */
172int usb_control_msg(struct usb_device *dev, unsigned int pipe,
173 unsigned char request, unsigned char requesttype,
174 unsigned short value, unsigned short index,
175 void *data, unsigned short size, int timeout)
176{
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530177 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Marek Vasutf16090f2012-02-13 18:58:18 +0000178
Remy Bohmer172a1132008-09-16 14:55:43 +0200179 if ((timeout == 0) && (!asynch_allowed)) {
180 /* request for a asynch control pipe is not allowed */
wdenkaffae2b2002-08-17 09:36:01 +0000181 return -1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200182 }
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200183
wdenkaffae2b2002-08-17 09:36:01 +0000184 /* set setup command */
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530185 setup_packet->requesttype = requesttype;
186 setup_packet->request = request;
187 setup_packet->value = cpu_to_le16(value);
188 setup_packet->index = cpu_to_le16(index);
189 setup_packet->length = cpu_to_le16(size);
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530190 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
191 "value 0x%X index 0x%X length 0x%X\n",
192 request, requesttype, value, index, size);
Remy Bohmer172a1132008-09-16 14:55:43 +0200193 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000194
Ilya Yanokb7161dd2012-07-15 04:43:51 +0000195 if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
196 return -1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200197 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000198 return (int)size;
Remy Bohmer172a1132008-09-16 14:55:43 +0200199
Remy Bohmer93cf0932010-02-01 19:40:47 +0100200 /*
201 * Wait for status to update until timeout expires, USB driver
202 * interrupt handler may set the status when the USB operation has
203 * been completed.
204 */
205 while (timeout--) {
206 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
207 break;
Mike Frysinger60ce19a2012-03-05 13:47:00 +0000208 mdelay(1);
Remy Bohmer47e72082008-10-10 10:23:21 +0200209 }
Remy Bohmer93cf0932010-02-01 19:40:47 +0100210 if (dev->status)
211 return -1;
Remy Bohmer47e72082008-10-10 10:23:21 +0200212
213 return dev->act_len;
Remy Bohmer93cf0932010-02-01 19:40:47 +0100214
wdenkaffae2b2002-08-17 09:36:01 +0000215}
216
217/*-------------------------------------------------------------------
218 * submits bulk message, and waits for completion. returns 0 if Ok or
219 * -1 if Error.
220 * synchronous behavior
221 */
222int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
223 void *data, int len, int *actual_length, int timeout)
224{
225 if (len < 0)
226 return -1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200227 dev->status = USB_ST_NOT_PROC; /*not yet processed */
Ilya Yanokb7161dd2012-07-15 04:43:51 +0000228 if (submit_bulk_msg(dev, pipe, data, len) < 0)
229 return -1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200230 while (timeout--) {
231 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000232 break;
Mike Frysinger60ce19a2012-03-05 13:47:00 +0000233 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000234 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200235 *actual_length = dev->act_len;
236 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000237 return 0;
238 else
239 return -1;
240}
241
242
243/*-------------------------------------------------------------------
244 * Max Packet stuff
245 */
246
247/*
248 * returns the max packet size, depending on the pipe direction and
249 * the configurations values
250 */
Remy Bohmer172a1132008-09-16 14:55:43 +0200251int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000252{
Remy Bohmer172a1132008-09-16 14:55:43 +0200253 /* direction is out -> use emaxpacket out */
254 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100255 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000256 else
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100257 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000258}
259
Marek Vasutd38ad252011-11-05 23:35:12 +0100260/*
261 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmercb2df642008-09-16 14:55:42 +0200262 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
263 * when it is inlined in 1 single routine. What happens is that the register r3
264 * is used as loop-count 'i', but gets overwritten later on.
265 * This is clearly a compiler bug, but it is easier to workaround it here than
266 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
267 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasutd38ad252011-11-05 23:35:12 +0100268 *
269 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmercb2df642008-09-16 14:55:42 +0200270 */
Mike Frysinger6d311142012-04-04 18:44:53 +0000271static void noinline
Marek Vasutd38ad252011-11-05 23:35:12 +0100272usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmercb2df642008-09-16 14:55:42 +0200273{
274 int b;
Marek Vasutd38ad252011-11-05 23:35:12 +0100275 struct usb_endpoint_descriptor *ep;
Tom Rini73424522011-12-15 08:40:51 -0700276 u16 ep_wMaxPacketSize;
Marek Vasutd38ad252011-11-05 23:35:12 +0100277
278 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmercb2df642008-09-16 14:55:42 +0200279
280 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rini73424522011-12-15 08:40:51 -0700281 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmercb2df642008-09-16 14:55:42 +0200282
283 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
284 USB_ENDPOINT_XFER_CONTROL) {
285 /* Control => bidirectional */
Tom Rini73424522011-12-15 08:40:51 -0700286 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
287 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530288 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
289 b, dev->epmaxpacketin[b]);
Remy Bohmercb2df642008-09-16 14:55:42 +0200290 } else {
291 if ((ep->bEndpointAddress & 0x80) == 0) {
292 /* OUT Endpoint */
Tom Rini73424522011-12-15 08:40:51 -0700293 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
294 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530295 debug("##EP epmaxpacketout[%d] = %d\n",
296 b, dev->epmaxpacketout[b]);
Remy Bohmercb2df642008-09-16 14:55:42 +0200297 }
298 } else {
299 /* IN Endpoint */
Tom Rini73424522011-12-15 08:40:51 -0700300 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
301 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530302 debug("##EP epmaxpacketin[%d] = %d\n",
303 b, dev->epmaxpacketin[b]);
Remy Bohmercb2df642008-09-16 14:55:42 +0200304 }
305 } /* if out */
306 } /* if control */
307}
308
wdenkaffae2b2002-08-17 09:36:01 +0000309/*
310 * set the max packed value of all endpoints in the given configuration
311 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000312static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000313{
Remy Bohmercb2df642008-09-16 14:55:42 +0200314 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000315
Tom Rix83b9e1d2009-10-31 12:37:38 -0500316 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
317 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasutd38ad252011-11-05 23:35:12 +0100318 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000319
wdenkaffae2b2002-08-17 09:36:01 +0000320 return 0;
321}
322
323/*******************************************************************************
324 * Parse the config, located in buffer, and fills the dev->config structure.
325 * Note that all little/big endian swapping are done automatically.
Julius Wernerfc4ec492013-07-19 13:12:08 -0700326 * (wTotalLength has already been swapped and sanitized when it was read.)
wdenkaffae2b2002-08-17 09:36:01 +0000327 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000328static int usb_parse_config(struct usb_device *dev,
329 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000330{
331 struct usb_descriptor_header *head;
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200332 int index, ifno, epno, curr_if_num;
Tom Rini73424522011-12-15 08:40:51 -0700333 u16 ep_wMaxPacketSize;
Vivek Gautam23cbd292013-04-12 16:34:34 +0530334 struct usb_interface *if_desc = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000335
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200336 ifno = -1;
337 epno = -1;
338 curr_if_num = -1;
339
340 dev->configno = cfgno;
341 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer172a1132008-09-16 14:55:43 +0200342 if (head->bDescriptorType != USB_DT_CONFIG) {
343 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
344 head->bDescriptorType);
wdenkaffae2b2002-08-17 09:36:01 +0000345 return -1;
346 }
Julius Wernerfc4ec492013-07-19 13:12:08 -0700347 if (head->bLength != USB_DT_CONFIG_SIZE) {
348 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
349 return -1;
350 }
351 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200352 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000353
Tom Rix83b9e1d2009-10-31 12:37:38 -0500354 index = dev->config.desc.bLength;
Remy Bohmer172a1132008-09-16 14:55:43 +0200355 /* Ok the first entry must be a configuration entry,
356 * now process the others */
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200357 head = (struct usb_descriptor_header *) &buffer[index];
Julius Wernerfc4ec492013-07-19 13:12:08 -0700358 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
Remy Bohmer172a1132008-09-16 14:55:43 +0200359 switch (head->bDescriptorType) {
360 case USB_DT_INTERFACE:
Julius Wernerfc4ec492013-07-19 13:12:08 -0700361 if (head->bLength != USB_DT_INTERFACE_SIZE) {
362 printf("ERROR: Invalid USB IF length (%d)\n",
363 head->bLength);
364 break;
365 }
366 if (index + USB_DT_INTERFACE_SIZE >
367 dev->config.desc.wTotalLength) {
368 puts("USB IF descriptor overflowed buffer!\n");
369 break;
370 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200371 if (((struct usb_interface_descriptor *) \
Julius Wernerfc4ec492013-07-19 13:12:08 -0700372 head)->bInterfaceNumber != curr_if_num) {
Remy Bohmer172a1132008-09-16 14:55:43 +0200373 /* this is a new interface, copy new desc */
374 ifno = dev->config.no_of_if;
Julius Wernerfc4ec492013-07-19 13:12:08 -0700375 if (ifno >= USB_MAXINTERFACES) {
376 puts("Too many USB interfaces!\n");
377 /* try to go on with what we have */
378 return 1;
379 }
Vivek Gautam23cbd292013-04-12 16:34:34 +0530380 if_desc = &dev->config.if_desc[ifno];
Remy Bohmer172a1132008-09-16 14:55:43 +0200381 dev->config.no_of_if++;
Julius Wernerfc4ec492013-07-19 13:12:08 -0700382 memcpy(if_desc, head,
383 USB_DT_INTERFACE_SIZE);
Vivek Gautam23cbd292013-04-12 16:34:34 +0530384 if_desc->no_of_ep = 0;
385 if_desc->num_altsetting = 1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200386 curr_if_num =
Vivek Gautam23cbd292013-04-12 16:34:34 +0530387 if_desc->desc.bInterfaceNumber;
Remy Bohmer172a1132008-09-16 14:55:43 +0200388 } else {
389 /* found alternate setting for the interface */
Vivek Gautam23cbd292013-04-12 16:34:34 +0530390 if (ifno >= 0) {
391 if_desc = &dev->config.if_desc[ifno];
392 if_desc->num_altsetting++;
393 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200394 }
395 break;
396 case USB_DT_ENDPOINT:
Julius Wernerfc4ec492013-07-19 13:12:08 -0700397 if (head->bLength != USB_DT_ENDPOINT_SIZE) {
398 printf("ERROR: Invalid USB EP length (%d)\n",
399 head->bLength);
400 break;
401 }
402 if (index + USB_DT_ENDPOINT_SIZE >
403 dev->config.desc.wTotalLength) {
404 puts("USB EP descriptor overflowed buffer!\n");
405 break;
406 }
407 if (ifno < 0) {
408 puts("Endpoint descriptor out of order!\n");
409 break;
410 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200411 epno = dev->config.if_desc[ifno].no_of_ep;
Vivek Gautam23cbd292013-04-12 16:34:34 +0530412 if_desc = &dev->config.if_desc[ifno];
Julius Wernerfc4ec492013-07-19 13:12:08 -0700413 if (epno > USB_MAXENDPOINTS) {
414 printf("Interface %d has too many endpoints!\n",
415 if_desc->desc.bInterfaceNumber);
416 return 1;
417 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200418 /* found an endpoint */
Vivek Gautam23cbd292013-04-12 16:34:34 +0530419 if_desc->no_of_ep++;
Julius Wernerfc4ec492013-07-19 13:12:08 -0700420 memcpy(&if_desc->ep_desc[epno], head,
421 USB_DT_ENDPOINT_SIZE);
Tom Rini73424522011-12-15 08:40:51 -0700422 ep_wMaxPacketSize = get_unaligned(&dev->config.\
423 if_desc[ifno].\
424 ep_desc[epno].\
425 wMaxPacketSize);
426 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
427 &dev->config.\
428 if_desc[ifno].\
429 ep_desc[epno].\
430 wMaxPacketSize);
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530431 debug("if %d, ep %d\n", ifno, epno);
Remy Bohmer172a1132008-09-16 14:55:43 +0200432 break;
Vivek Gautamdf3f2212013-04-12 16:34:38 +0530433 case USB_DT_SS_ENDPOINT_COMP:
Julius Wernerfc4ec492013-07-19 13:12:08 -0700434 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
435 printf("ERROR: Invalid USB EPC length (%d)\n",
436 head->bLength);
437 break;
438 }
439 if (index + USB_DT_SS_EP_COMP_SIZE >
440 dev->config.desc.wTotalLength) {
441 puts("USB EPC descriptor overflowed buffer!\n");
442 break;
443 }
444 if (ifno < 0 || epno < 0) {
445 puts("EPC descriptor out of order!\n");
446 break;
447 }
Vivek Gautamdf3f2212013-04-12 16:34:38 +0530448 if_desc = &dev->config.if_desc[ifno];
Julius Wernerfc4ec492013-07-19 13:12:08 -0700449 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
450 USB_DT_SS_EP_COMP_SIZE);
Vivek Gautamdf3f2212013-04-12 16:34:38 +0530451 break;
Remy Bohmer172a1132008-09-16 14:55:43 +0200452 default:
453 if (head->bLength == 0)
454 return 1;
455
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530456 debug("unknown Description Type : %x\n",
457 head->bDescriptorType);
Remy Bohmer172a1132008-09-16 14:55:43 +0200458
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530459#ifdef DEBUG
Remy Bohmer172a1132008-09-16 14:55:43 +0200460 {
Wolfgang Denk24103482011-10-05 23:11:19 +0200461 unsigned char *ch = (unsigned char *)head;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530462 int i;
463
Remy Bohmer172a1132008-09-16 14:55:43 +0200464 for (i = 0; i < head->bLength; i++)
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530465 debug("%02X ", *ch++);
466 debug("\n\n\n");
Remy Bohmer172a1132008-09-16 14:55:43 +0200467 }
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530468#endif
Remy Bohmer172a1132008-09-16 14:55:43 +0200469 break;
wdenkaffae2b2002-08-17 09:36:01 +0000470 }
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200471 index += head->bLength;
472 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000473 }
474 return 1;
475}
476
477/***********************************************************************
478 * Clears an endpoint
479 * endp: endpoint number in bits 0-3;
480 * direction flag in bit 7 (1 = IN, 0 = OUT)
481 */
482int usb_clear_halt(struct usb_device *dev, int pipe)
483{
484 int result;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200485 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000486
487 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer172a1132008-09-16 14:55:43 +0200488 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
489 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000490
491 /* don't clear if failed */
492 if (result < 0)
493 return result;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200494
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200495 /*
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200496 * NOTE: we do not get status and verify reset was successful
497 * as some devices are reported to lock up upon this check..
498 */
499
wdenkaffae2b2002-08-17 09:36:01 +0000500 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200501
wdenkaffae2b2002-08-17 09:36:01 +0000502 /* toggle is reset on clear */
503 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
504 return 0;
505}
506
507
508/**********************************************************************
509 * get_descriptor type
510 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000511static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer172a1132008-09-16 14:55:43 +0200512 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000513{
514 int res;
Wolfgang Denka1be4762008-05-20 16:00:29 +0200515 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
wdenkaffae2b2002-08-17 09:36:01 +0000516 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
517 (type << 8) + index, 0,
518 buf, size, USB_CNTL_TIMEOUT);
519 return res;
520}
521
522/**********************************************************************
523 * gets configuration cfgno and store it in the buffer
524 */
Remy Bohmer172a1132008-09-16 14:55:43 +0200525int usb_get_configuration_no(struct usb_device *dev,
526 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000527{
Wolfgang Denka1be4762008-05-20 16:00:29 +0200528 int result;
Julius Wernerfc4ec492013-07-19 13:12:08 -0700529 unsigned int length;
Ilya Yanoka1cf10f2012-11-06 13:48:20 +0000530 struct usb_config_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000531
Ilya Yanoka1cf10f2012-11-06 13:48:20 +0000532 config = (struct usb_config_descriptor *)&buffer[0];
Remy Bohmer47e72082008-10-10 10:23:21 +0200533 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
534 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000535 if (result < 0)
Remy Bohmer172a1132008-09-16 14:55:43 +0200536 printf("unable to get descriptor, error %lX\n",
537 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000538 else
Remy Bohmer172a1132008-09-16 14:55:43 +0200539 printf("config descriptor too short " \
Remy Bohmer47e72082008-10-10 10:23:21 +0200540 "(expected %i, got %i)\n", 9, result);
wdenkaffae2b2002-08-17 09:36:01 +0000541 return -1;
542 }
Julius Wernerfc4ec492013-07-19 13:12:08 -0700543 length = le16_to_cpu(config->wTotalLength);
wdenkaffae2b2002-08-17 09:36:01 +0000544
Julius Wernerfc4ec492013-07-19 13:12:08 -0700545 if (length > USB_BUFSIZ) {
546 printf("%s: failed to get descriptor - too long: %d\n",
547 __func__, length);
wdenkf70cbb22004-02-23 20:48:38 +0000548 return -1;
549 }
550
Julius Wernerfc4ec492013-07-19 13:12:08 -0700551 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
552 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, length);
553 config->wTotalLength = length; /* validated, with CPU byte order */
554
wdenkaffae2b2002-08-17 09:36:01 +0000555 return result;
556}
557
558/********************************************************************
559 * set address of a device to the value in dev->devnum.
560 * This can only be done by addressing the device via the default address (0)
561 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000562static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000563{
564 int res;
565
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530566 debug("set address %d\n", dev->devnum);
Remy Bohmer172a1132008-09-16 14:55:43 +0200567 res = usb_control_msg(dev, usb_snddefctrl(dev),
568 USB_REQ_SET_ADDRESS, 0,
569 (dev->devnum), 0,
570 NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000571 return res;
572}
573
574/********************************************************************
575 * set interface number to interface
576 */
577int usb_set_interface(struct usb_device *dev, int interface, int alternate)
578{
Tom Rix83b9e1d2009-10-31 12:37:38 -0500579 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000580 int ret, i;
581
Tom Rix83b9e1d2009-10-31 12:37:38 -0500582 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
583 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000584 if_face = &dev->config.if_desc[i];
585 break;
586 }
587 }
588 if (!if_face) {
589 printf("selecting invalid interface %d", interface);
590 return -1;
591 }
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200592 /*
593 * We should return now for devices with only one alternate setting.
Remy Bohmer172a1132008-09-16 14:55:43 +0200594 * According to 9.4.10 of the Universal Serial Bus Specification
595 * Revision 2.0 such devices can return with a STALL. This results in
596 * some USB sticks timeouting during initialization and then being
597 * unusable in U-Boot.
Bartlomiej Sieka978333a2006-08-02 00:54:18 +0200598 */
599 if (if_face->num_altsetting == 1)
600 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000601
Remy Bohmer172a1132008-09-16 14:55:43 +0200602 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
603 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
604 alternate, interface, NULL, 0,
605 USB_CNTL_TIMEOUT * 5);
606 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000607 return ret;
608
wdenkaffae2b2002-08-17 09:36:01 +0000609 return 0;
610}
611
612/********************************************************************
613 * set configuration number to configuration
614 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000615static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000616{
617 int res;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530618 debug("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000619 /* set setup command */
Remy Bohmer172a1132008-09-16 14:55:43 +0200620 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
621 USB_REQ_SET_CONFIGURATION, 0,
622 configuration, 0,
623 NULL, 0, USB_CNTL_TIMEOUT);
624 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000625 dev->toggle[0] = 0;
626 dev->toggle[1] = 0;
627 return 0;
Remy Bohmer172a1132008-09-16 14:55:43 +0200628 } else
wdenkaffae2b2002-08-17 09:36:01 +0000629 return -1;
630}
631
632/********************************************************************
633 * set protocol to protocol
634 */
635int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
636{
637 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
638 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
639 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
640}
641
642/********************************************************************
643 * set idle
644 */
645int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
646{
647 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
648 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
649 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
650}
651
652/********************************************************************
653 * get report
654 */
Remy Bohmer172a1132008-09-16 14:55:43 +0200655int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
656 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000657{
658 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer172a1132008-09-16 14:55:43 +0200659 USB_REQ_GET_REPORT,
660 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
661 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000662}
663
664/********************************************************************
665 * get class descriptor
666 */
667int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
668 unsigned char type, unsigned char id, void *buf, int size)
669{
670 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
671 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
672 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
673}
674
675/********************************************************************
676 * get string index in buffer
677 */
Marek Vasut3a16a6a2012-02-13 18:58:16 +0000678static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer172a1132008-09-16 14:55:43 +0200679 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000680{
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200681 int i;
682 int result;
683
684 for (i = 0; i < 3; ++i) {
685 /* some devices are flaky */
686 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
687 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200688 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200689 USB_CNTL_TIMEOUT);
690
691 if (result > 0)
692 break;
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200693 }
694
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200695 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000696}
697
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200698
699static void usb_try_string_workarounds(unsigned char *buf, int *length)
700{
701 int newlength, oldlength = *length;
702
703 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
704 if (!isprint(buf[newlength]) || buf[newlength + 1])
705 break;
706
707 if (newlength > 2) {
708 buf[0] = newlength;
709 *length = newlength;
710 }
711}
712
713
714static int usb_string_sub(struct usb_device *dev, unsigned int langid,
715 unsigned int index, unsigned char *buf)
716{
717 int rc;
718
719 /* Try to read the string descriptor by asking for the maximum
720 * possible number of bytes */
721 rc = usb_get_string(dev, langid, index, buf, 255);
722
723 /* If that failed try to read the descriptor length, then
724 * ask for just that many bytes */
725 if (rc < 2) {
726 rc = usb_get_string(dev, langid, index, buf, 2);
727 if (rc == 2)
728 rc = usb_get_string(dev, langid, index, buf, buf[0]);
729 }
730
731 if (rc >= 2) {
732 if (!buf[0] && !buf[1])
733 usb_try_string_workarounds(buf, &rc);
734
735 /* There might be extra junk at the end of the descriptor */
736 if (buf[0] < rc)
737 rc = buf[0];
738
739 rc = rc - (rc & 1); /* force a multiple of two */
740 }
741
742 if (rc < 2)
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200743 rc = -1;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200744
745 return rc;
746}
747
748
wdenkaffae2b2002-08-17 09:36:01 +0000749/********************************************************************
750 * usb_string:
751 * Get string index and translate it to ascii.
752 * returns string length (> 0) or error (< 0)
753 */
754int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
755{
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530756 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000757 unsigned char *tbuf;
758 int err;
759 unsigned int u, idx;
760
761 if (size <= 0 || !buf || !index)
762 return -1;
763 buf[0] = 0;
Wolfgang Denkdc770c72008-07-14 15:19:07 +0200764 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000765
766 /* get langid for strings if it's not yet known */
767 if (!dev->have_langid) {
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200768 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000769 if (err < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530770 debug("error getting string descriptor 0 " \
771 "(error=%lx)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000772 return -1;
773 } else if (tbuf[0] < 4) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530774 debug("string descriptor 0 too short\n");
wdenkaffae2b2002-08-17 09:36:01 +0000775 return -1;
776 } else {
777 dev->have_langid = -1;
Remy Bohmer172a1132008-09-16 14:55:43 +0200778 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000779 /* always use the first langid listed */
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530780 debug("USB device number %d default " \
781 "language ID 0x%x\n",
782 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000783 }
784 }
wdenkf70cbb22004-02-23 20:48:38 +0000785
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200786 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000787 if (err < 0)
788 return err;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200789
wdenkaffae2b2002-08-17 09:36:01 +0000790 size--; /* leave room for trailing NULL char in output buffer */
791 for (idx = 0, u = 2; u < err; u += 2) {
792 if (idx >= size)
793 break;
794 if (tbuf[u+1]) /* high byte */
795 buf[idx++] = '?'; /* non-ASCII character */
796 else
797 buf[idx++] = tbuf[u];
798 }
799 buf[idx] = 0;
800 err = idx;
801 return err;
802}
803
804
805/********************************************************************
806 * USB device handling:
807 * the USB device are static allocated [USB_MAX_DEVICE].
808 */
809
810
811/* returns a pointer to the device with the index [index].
812 * if the device is not assigned (dev->devnum==-1) returns NULL
813 */
Remy Bohmer172a1132008-09-16 14:55:43 +0200814struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000815{
Remy Bohmer172a1132008-09-16 14:55:43 +0200816 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000817 return NULL;
818 else
819 return &usb_dev[index];
820}
821
wdenkaffae2b2002-08-17 09:36:01 +0000822/* returns a pointer of a new device structure or NULL, if
823 * no device struct is available
824 */
Lucas Stacha3231282012-09-26 00:14:34 +0200825struct usb_device *usb_alloc_new_device(void *controller)
wdenkaffae2b2002-08-17 09:36:01 +0000826{
827 int i;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530828 debug("New Device %d\n", dev_index);
Remy Bohmer172a1132008-09-16 14:55:43 +0200829 if (dev_index == USB_MAX_DEVICE) {
830 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
wdenkaffae2b2002-08-17 09:36:01 +0000831 return NULL;
832 }
Remy Bohmer172a1132008-09-16 14:55:43 +0200833 /* default Address is 0, real addresses start with 1 */
834 usb_dev[dev_index].devnum = dev_index + 1;
835 usb_dev[dev_index].maxchild = 0;
836 for (i = 0; i < USB_MAXCHILDREN; i++)
837 usb_dev[dev_index].children[i] = NULL;
838 usb_dev[dev_index].parent = NULL;
Lucas Stacha3231282012-09-26 00:14:34 +0200839 usb_dev[dev_index].controller = controller;
wdenkaffae2b2002-08-17 09:36:01 +0000840 dev_index++;
Remy Bohmer172a1132008-09-16 14:55:43 +0200841 return &usb_dev[dev_index - 1];
wdenkaffae2b2002-08-17 09:36:01 +0000842}
843
Milind Choudharyebb24782012-12-12 17:55:28 -0800844/*
845 * Free the newly created device node.
846 * Called in error cases where configuring a newly attached
847 * device fails for some reason.
848 */
849void usb_free_device(void)
850{
851 dev_index--;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530852 debug("Freeing device node: %d\n", dev_index);
Milind Choudharyebb24782012-12-12 17:55:28 -0800853 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
854 usb_dev[dev_index].devnum = -1;
855}
wdenkaffae2b2002-08-17 09:36:01 +0000856
857/*
858 * By the time we get here, the device has gotten a new device ID
859 * and is in the default state. We need to identify the thing and
860 * get the ball rolling..
861 *
862 * Returns 0 for success, != 0 for error.
863 */
Marek Vasut6da5af32012-02-13 18:58:17 +0000864int usb_new_device(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000865{
866 int addr, err;
867 int tmp;
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530868 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000869
wdenkaffae2b2002-08-17 09:36:01 +0000870 /* We still haven't set the Address yet */
871 addr = dev->devnum;
872 dev->devnum = 0;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200873
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200874#ifdef CONFIG_LEGACY_USB_INIT_SEQ
875 /* this is the old and known way of initializing devices, it is
876 * different than what Windows and Linux are doing. Windows and Linux
877 * both retrieve 64 bytes while reading the device descriptor
878 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
879 * invalid header while reading 8 bytes as device descriptor. */
880 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
Remy Bohmer47e72082008-10-10 10:23:21 +0200881 dev->maxpacketsize = PACKET_SIZE_8;
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100882 dev->epmaxpacketin[0] = 8;
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200883 dev->epmaxpacketout[0] = 8;
884
Ilya Yanokda875872012-07-15 04:43:50 +0000885 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8);
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200886 if (err < 8) {
887 printf("\n USB device not responding, " \
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100888 "giving up (status=%lX)\n", dev->status);
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200889 return 1;
890 }
Ilya Yanokda875872012-07-15 04:43:50 +0000891 memcpy(&dev->descriptor, tmpbuf, 8);
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200892#else
Remy Bohmer47e72082008-10-10 10:23:21 +0200893 /* This is a Windows scheme of initialization sequence, with double
894 * reset of the device (Linux uses the same sequence)
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200895 * Some equipment is said to work only with such init sequence; this
896 * patch is based on the work by Alan Stern:
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100897 * http://sourceforge.net/mailarchive/forum.php?
898 * thread_id=5729457&forum_id=5398
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200899 */
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200900 struct usb_device_descriptor *desc;
901 int port = -1;
902 struct usb_device *parent = dev->parent;
903 unsigned short portstatus;
904
905 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
906 * only 18 bytes long, this will terminate with a short packet. But if
907 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200908 * some more, or keeps on retransmitting the 8 byte header. */
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200909
910 desc = (struct usb_device_descriptor *)tmpbuf;
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200911 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
Remy Bohmer47e72082008-10-10 10:23:21 +0200912 /* Default to 64 byte max packet size */
913 dev->maxpacketsize = PACKET_SIZE_64;
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100914 dev->epmaxpacketin[0] = 64;
Remy Bohmeraca9b6e2008-09-16 14:55:44 +0200915 dev->epmaxpacketout[0] = 64;
Remy Bohmer47e72082008-10-10 10:23:21 +0200916
917 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
918 if (err < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530919 debug("usb_new_device: usb_get_descriptor() failed\n");
Remy Bohmer47e72082008-10-10 10:23:21 +0200920 return 1;
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200921 }
Remy Bohmer47e72082008-10-10 10:23:21 +0200922
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200923 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
Vivek Gautamde701662013-04-12 16:34:36 +0530924 /*
925 * Fetch the device class, driver can use this info
926 * to differentiate between HUB and DEVICE.
927 */
928 dev->descriptor.bDeviceClass = desc->bDeviceClass;
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200929
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200930 /* find the port number we're at */
931 if (parent) {
Remy Bohmer47e72082008-10-10 10:23:21 +0200932 int j;
Wolfgang Denkd06ce5d2005-08-02 17:06:17 +0200933
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200934 for (j = 0; j < parent->maxchild; j++) {
935 if (parent->children[j] == dev) {
936 port = j;
937 break;
938 }
939 }
940 if (port < 0) {
Remy Bohmer172a1132008-09-16 14:55:43 +0200941 printf("usb_new_device:cannot locate device's port.\n");
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200942 return 1;
943 }
944
945 /* reset the port for the second time */
946 err = hub_port_reset(dev->parent, port, &portstatus);
947 if (err < 0) {
948 printf("\n Couldn't reset port %i\n", port);
949 return 1;
950 }
951 }
Wolfgang Denkc7a4f7d2005-07-21 11:57:57 +0200952#endif
953
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100954 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +0000955 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
956 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchi5f2e7fc2008-11-26 17:41:34 +0100957 case 8:
958 dev->maxpacketsize = PACKET_SIZE_8;
959 break;
960 case 16:
961 dev->maxpacketsize = PACKET_SIZE_16;
962 break;
963 case 32:
964 dev->maxpacketsize = PACKET_SIZE_32;
965 break;
966 case 64:
967 dev->maxpacketsize = PACKET_SIZE_64;
968 break;
wdenkaffae2b2002-08-17 09:36:01 +0000969 }
970 dev->devnum = addr;
971
972 err = usb_set_address(dev); /* set address */
973
974 if (err < 0) {
Remy Bohmer172a1132008-09-16 14:55:43 +0200975 printf("\n USB device not accepting new address " \
976 "(error=%lX)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000977 return 1;
978 }
979
Mike Frysinger60ce19a2012-03-05 13:47:00 +0000980 mdelay(10); /* Let the SET_ADDRESS settle */
wdenkaffae2b2002-08-17 09:36:01 +0000981
982 tmp = sizeof(dev->descriptor);
983
Remy Bohmer172a1132008-09-16 14:55:43 +0200984 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
Ilya Yanokda875872012-07-15 04:43:50 +0000985 tmpbuf, sizeof(dev->descriptor));
wdenkaffae2b2002-08-17 09:36:01 +0000986 if (err < tmp) {
987 if (err < 0)
Remy Bohmer172a1132008-09-16 14:55:43 +0200988 printf("unable to get device descriptor (error=%d)\n",
989 err);
wdenkaffae2b2002-08-17 09:36:01 +0000990 else
Remy Bohmer172a1132008-09-16 14:55:43 +0200991 printf("USB device descriptor short read " \
992 "(expected %i, got %i)\n", tmp, err);
wdenkaffae2b2002-08-17 09:36:01 +0000993 return 1;
994 }
Ilya Yanokda875872012-07-15 04:43:50 +0000995 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
wdenkaffae2b2002-08-17 09:36:01 +0000996 /* correct le values */
Christian Eggers4e0e8d02008-05-21 22:12:00 +0200997 le16_to_cpus(&dev->descriptor.bcdUSB);
998 le16_to_cpus(&dev->descriptor.idVendor);
999 le16_to_cpus(&dev->descriptor.idProduct);
1000 le16_to_cpus(&dev->descriptor.bcdDevice);
wdenkaffae2b2002-08-17 09:36:01 +00001001 /* only support for one config for now */
Vincent Palatin6a238662012-07-24 07:12:02 +00001002 err = usb_get_configuration_no(dev, tmpbuf, 0);
1003 if (err < 0) {
1004 printf("usb_new_device: Cannot read configuration, " \
1005 "skipping device %04x:%04x\n",
1006 dev->descriptor.idVendor, dev->descriptor.idProduct);
1007 return -1;
1008 }
Puneet Saxena6c9bb602012-04-03 14:56:06 +05301009 usb_parse_config(dev, tmpbuf, 0);
wdenkaffae2b2002-08-17 09:36:01 +00001010 usb_set_maxpacket(dev);
1011 /* we set the default configuration here */
Tom Rix83b9e1d2009-10-31 12:37:38 -05001012 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
Remy Bohmer172a1132008-09-16 14:55:43 +02001013 printf("failed to set default configuration " \
1014 "len %d, status %lX\n", dev->act_len, dev->status);
wdenkaffae2b2002-08-17 09:36:01 +00001015 return -1;
1016 }
Vivek Gautamf94c95d2013-04-12 16:34:33 +05301017 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1018 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1019 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +00001020 memset(dev->mf, 0, sizeof(dev->mf));
1021 memset(dev->prod, 0, sizeof(dev->prod));
1022 memset(dev->serial, 0, sizeof(dev->serial));
1023 if (dev->descriptor.iManufacturer)
Remy Bohmer172a1132008-09-16 14:55:43 +02001024 usb_string(dev, dev->descriptor.iManufacturer,
1025 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +00001026 if (dev->descriptor.iProduct)
Remy Bohmer172a1132008-09-16 14:55:43 +02001027 usb_string(dev, dev->descriptor.iProduct,
1028 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +00001029 if (dev->descriptor.iSerialNumber)
Remy Bohmer172a1132008-09-16 14:55:43 +02001030 usb_string(dev, dev->descriptor.iSerialNumber,
1031 dev->serial, sizeof(dev->serial));
Vivek Gautamf94c95d2013-04-12 16:34:33 +05301032 debug("Manufacturer %s\n", dev->mf);
1033 debug("Product %s\n", dev->prod);
1034 debug("SerialNumber %s\n", dev->serial);
wdenkaffae2b2002-08-17 09:36:01 +00001035 /* now prode if the device is a hub */
Remy Bohmer172a1132008-09-16 14:55:43 +02001036 usb_hub_probe(dev, 0);
wdenkaffae2b2002-08-17 09:36:01 +00001037 return 0;
1038}
1039
wdenkaffae2b2002-08-17 09:36:01 +00001040/* EOF */