blob: 32e15cd8ddb93320c5758635268daac68e7196f7 [file] [log] [blame]
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 Denk460c3222005-08-04 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 Denk1a459662013-07-08 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 Frysinger66cf6412012-04-04 18:44:53 +000032#include <linux/compiler.h>
Wolfgang Denk9c998aa2005-07-21 11:57:57 +020033#include <linux/ctype.h>
Christian Eggersc9182612008-05-21 22:12:00 +020034#include <asm/byteorder.h>
Tom Rinib2fb47f2011-12-15 08:40:51 -070035#include <asm/unaligned.h>
Marek Vasut97b9eb92014-08-01 03:09:53 +020036#include <errno.h>
wdenkaffae2b2002-08-17 09:36:01 +000037#include <usb.h>
38#ifdef CONFIG_4xx
Stefan Roese3048bcb2007-10-03 15:01:02 +020039#include <asm/4xx_pci.h>
wdenkaffae2b2002-08-17 09:36:01 +000040#endif
41
wdenkcd0a9de2004-02-23 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 Siekae51aae32006-08-03 23:20:13 +020048char usb_started; /* flag for the started/stopped USB status */
49
Lucas Stach93c25822012-09-26 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 Stach93c25822012-09-26 00:14:36 +020059 void *ctrl;
60 struct usb_device *dev;
61 int i, start_index = 0;
Hans de Goeded906bbc2015-01-11 20:34:46 +010062 int controllers_initialized = 0;
Marek Vasut97b9eb92014-08-01 03:09:53 +020063 int ret;
wdenkaffae2b2002-08-17 09:36:01 +000064
Remy Bohmer6f5794a2008-09-16 14:55:43 +020065 dev_index = 0;
66 asynch_allowed = 1;
wdenkaffae2b2002-08-17 09:36:01 +000067 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +020068
69 /* first make all devices unknown */
70 for (i = 0; i < USB_MAX_DEVICE; i++) {
71 memset(&usb_dev[i], 0, sizeof(struct usb_device));
72 usb_dev[i].devnum = -1;
73 }
74
wdenkaffae2b2002-08-17 09:36:01 +000075 /* init low_level USB */
Lucas Stach93c25822012-09-26 00:14:36 +020076 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
77 /* init low_level USB */
78 printf("USB%d: ", i);
Marek Vasut97b9eb92014-08-01 03:09:53 +020079 ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
80 if (ret == -ENODEV) { /* No such device. */
81 puts("Port not available.\n");
Hans de Goeded906bbc2015-01-11 20:34:46 +010082 controllers_initialized++;
Marek Vasut97b9eb92014-08-01 03:09:53 +020083 continue;
84 }
85
86 if (ret) { /* Other error. */
Lucas Stach93c25822012-09-26 00:14:36 +020087 puts("lowlevel init failed\n");
88 continue;
89 }
90 /*
91 * lowlevel init is OK, now scan the bus for devices
92 * i.e. search HUBs and configure them
93 */
Hans de Goeded906bbc2015-01-11 20:34:46 +010094 controllers_initialized++;
Lucas Stach93c25822012-09-26 00:14:36 +020095 start_index = dev_index;
96 printf("scanning bus %d for devices... ", i);
97 dev = usb_alloc_new_device(ctrl);
98 /*
99 * device 0 is always present
100 * (root hub, so let it analyze)
101 */
102 if (dev)
103 usb_new_device(dev);
104
105 if (start_index == dev_index)
106 puts("No USB Device found\n");
107 else
108 printf("%d USB Device(s) found\n",
109 dev_index - start_index);
110
Bartlomiej Siekae51aae32006-08-03 23:20:13 +0200111 usb_started = 1;
Lucas Stach93c25822012-09-26 00:14:36 +0200112 }
113
Vivek Gautamceb49722013-04-12 16:34:33 +0530114 debug("scan end\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200115 /* if we were not able to find at least one working bus, bail out */
Hans de Goeded906bbc2015-01-11 20:34:46 +0100116 if (controllers_initialized == 0)
Lucas Stach93c25822012-09-26 00:14:36 +0200117 puts("USB error: all controllers failed lowlevel init\n");
Lucas Stach93c25822012-09-26 00:14:36 +0200118
Hans de Goeded906bbc2015-01-11 20:34:46 +0100119 return usb_started ? 0 : -1;
wdenkaffae2b2002-08-17 09:36:01 +0000120}
121
122/******************************************************************************
123 * Stop USB this stops the LowLevel Part and deregisters USB devices.
124 */
125int usb_stop(void)
126{
Lucas Stach93c25822012-09-26 00:14:36 +0200127 int i;
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200128
129 if (usb_started) {
130 asynch_allowed = 1;
131 usb_started = 0;
132 usb_hub_reset();
Lucas Stach93c25822012-09-26 00:14:36 +0200133
134 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
135 if (usb_lowlevel_stop(i))
136 printf("failed to stop USB controller %d\n", i);
137 }
Remy Bohmereba1f2f2008-08-20 11:22:02 +0200138 }
Lucas Stach93c25822012-09-26 00:14:36 +0200139
140 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000141}
142
143/*
144 * disables the asynch behaviour of the control message. This is used for data
145 * transfers that uses the exclusiv access to the control and bulk messages.
Simon Glass89d48362011-02-16 11:14:33 -0800146 * Returns the old value so it can be restored later.
wdenkaffae2b2002-08-17 09:36:01 +0000147 */
Simon Glass89d48362011-02-16 11:14:33 -0800148int usb_disable_asynch(int disable)
wdenkaffae2b2002-08-17 09:36:01 +0000149{
Simon Glass89d48362011-02-16 11:14:33 -0800150 int old_value = asynch_allowed;
151
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200152 asynch_allowed = !disable;
Simon Glass89d48362011-02-16 11:14:33 -0800153 return old_value;
wdenkaffae2b2002-08-17 09:36:01 +0000154}
155
156
157/*-------------------------------------------------------------------
158 * Message wrappers.
159 *
160 */
161
162/*
163 * submits an Interrupt Message
164 */
165int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200166 void *buffer, int transfer_len, int interval)
wdenkaffae2b2002-08-17 09:36:01 +0000167{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200168 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
wdenkaffae2b2002-08-17 09:36:01 +0000169}
170
171/*
172 * submits a control message and waits for comletion (at least timeout * 1ms)
173 * If timeout is 0, we don't wait for completion (used as example to set and
174 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
175 * allow control messages with 0 timeout, by previousely resetting the flag
176 * asynch_allowed (usb_disable_asynch(1)).
177 * returns the transfered length if OK or -1 if error. The transfered length
178 * and the current status are stored in the dev->act_len and dev->status.
179 */
180int usb_control_msg(struct usb_device *dev, unsigned int pipe,
181 unsigned char request, unsigned char requesttype,
182 unsigned short value, unsigned short index,
183 void *data, unsigned short size, int timeout)
184{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530185 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
Marek Vasute159e482012-02-13 18:58:18 +0000186
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200187 if ((timeout == 0) && (!asynch_allowed)) {
188 /* request for a asynch control pipe is not allowed */
wdenkaffae2b2002-08-17 09:36:01 +0000189 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200190 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200191
wdenkaffae2b2002-08-17 09:36:01 +0000192 /* set setup command */
Puneet Saxenaf5766132012-04-03 14:56:06 +0530193 setup_packet->requesttype = requesttype;
194 setup_packet->request = request;
195 setup_packet->value = cpu_to_le16(value);
196 setup_packet->index = cpu_to_le16(index);
197 setup_packet->length = cpu_to_le16(size);
Vivek Gautamceb49722013-04-12 16:34:33 +0530198 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
199 "value 0x%X index 0x%X length 0x%X\n",
200 request, requesttype, value, index, size);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200201 dev->status = USB_ST_NOT_PROC; /*not yet processed */
wdenkaffae2b2002-08-17 09:36:01 +0000202
Ilya Yanokfd060282012-07-15 04:43:51 +0000203 if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
204 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200205 if (timeout == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000206 return (int)size;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200207
Remy Bohmer84d36b32010-02-01 19:40:47 +0100208 /*
209 * Wait for status to update until timeout expires, USB driver
210 * interrupt handler may set the status when the USB operation has
211 * been completed.
212 */
213 while (timeout--) {
214 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
215 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000216 mdelay(1);
Remy Bohmer48867202008-10-10 10:23:21 +0200217 }
Remy Bohmer84d36b32010-02-01 19:40:47 +0100218 if (dev->status)
219 return -1;
Remy Bohmer48867202008-10-10 10:23:21 +0200220
221 return dev->act_len;
Remy Bohmer84d36b32010-02-01 19:40:47 +0100222
wdenkaffae2b2002-08-17 09:36:01 +0000223}
224
225/*-------------------------------------------------------------------
226 * submits bulk message, and waits for completion. returns 0 if Ok or
227 * -1 if Error.
228 * synchronous behavior
229 */
230int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
231 void *data, int len, int *actual_length, int timeout)
232{
233 if (len < 0)
234 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200235 dev->status = USB_ST_NOT_PROC; /*not yet processed */
Ilya Yanokfd060282012-07-15 04:43:51 +0000236 if (submit_bulk_msg(dev, pipe, data, len) < 0)
237 return -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200238 while (timeout--) {
239 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
wdenkaffae2b2002-08-17 09:36:01 +0000240 break;
Mike Frysinger5b84dd62012-03-05 13:47:00 +0000241 mdelay(1);
wdenkaffae2b2002-08-17 09:36:01 +0000242 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200243 *actual_length = dev->act_len;
244 if (dev->status == 0)
wdenkaffae2b2002-08-17 09:36:01 +0000245 return 0;
246 else
247 return -1;
248}
249
250
251/*-------------------------------------------------------------------
252 * Max Packet stuff
253 */
254
255/*
256 * returns the max packet size, depending on the pipe direction and
257 * the configurations values
258 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200259int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
wdenkaffae2b2002-08-17 09:36:01 +0000260{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200261 /* direction is out -> use emaxpacket out */
262 if ((pipe & USB_DIR_IN) == 0)
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100263 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000264 else
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100265 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
wdenkaffae2b2002-08-17 09:36:01 +0000266}
267
Marek Vasut5e8baf82011-11-05 23:35:12 +0100268/*
269 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
Remy Bohmerbe19d322008-09-16 14:55:42 +0200270 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
271 * when it is inlined in 1 single routine. What happens is that the register r3
272 * is used as loop-count 'i', but gets overwritten later on.
273 * This is clearly a compiler bug, but it is easier to workaround it here than
274 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
275 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100276 *
277 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
Remy Bohmerbe19d322008-09-16 14:55:42 +0200278 */
Mike Frysinger66cf6412012-04-04 18:44:53 +0000279static void noinline
Marek Vasut5e8baf82011-11-05 23:35:12 +0100280usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
Remy Bohmerbe19d322008-09-16 14:55:42 +0200281{
282 int b;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100283 struct usb_endpoint_descriptor *ep;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700284 u16 ep_wMaxPacketSize;
Marek Vasut5e8baf82011-11-05 23:35:12 +0100285
286 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
Remy Bohmerbe19d322008-09-16 14:55:42 +0200287
288 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700289 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200290
291 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
292 USB_ENDPOINT_XFER_CONTROL) {
293 /* Control => bidirectional */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700294 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
295 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530296 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
297 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200298 } else {
299 if ((ep->bEndpointAddress & 0x80) == 0) {
300 /* OUT Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700301 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
302 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530303 debug("##EP epmaxpacketout[%d] = %d\n",
304 b, dev->epmaxpacketout[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200305 }
306 } else {
307 /* IN Endpoint */
Tom Rinib2fb47f2011-12-15 08:40:51 -0700308 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
309 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
Vivek Gautamceb49722013-04-12 16:34:33 +0530310 debug("##EP epmaxpacketin[%d] = %d\n",
311 b, dev->epmaxpacketin[b]);
Remy Bohmerbe19d322008-09-16 14:55:42 +0200312 }
313 } /* if out */
314 } /* if control */
315}
316
wdenkaffae2b2002-08-17 09:36:01 +0000317/*
318 * set the max packed value of all endpoints in the given configuration
319 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000320static int usb_set_maxpacket(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000321{
Remy Bohmerbe19d322008-09-16 14:55:42 +0200322 int i, ii;
wdenkaffae2b2002-08-17 09:36:01 +0000323
Tom Rix8f8bd562009-10-31 12:37:38 -0500324 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
325 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
Marek Vasut5e8baf82011-11-05 23:35:12 +0100326 usb_set_maxpacket_ep(dev, i, ii);
wdenkaffae2b2002-08-17 09:36:01 +0000327
wdenkaffae2b2002-08-17 09:36:01 +0000328 return 0;
329}
330
331/*******************************************************************************
332 * Parse the config, located in buffer, and fills the dev->config structure.
333 * Note that all little/big endian swapping are done automatically.
Julius Wernereaf3e612013-07-19 13:12:08 -0700334 * (wTotalLength has already been swapped and sanitized when it was read.)
wdenkaffae2b2002-08-17 09:36:01 +0000335 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000336static int usb_parse_config(struct usb_device *dev,
337 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000338{
339 struct usb_descriptor_header *head;
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200340 int index, ifno, epno, curr_if_num;
Tom Rinib2fb47f2011-12-15 08:40:51 -0700341 u16 ep_wMaxPacketSize;
Vivek Gautam605bd752013-04-12 16:34:34 +0530342 struct usb_interface *if_desc = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000343
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200344 ifno = -1;
345 epno = -1;
346 curr_if_num = -1;
347
348 dev->configno = cfgno;
349 head = (struct usb_descriptor_header *) &buffer[0];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200350 if (head->bDescriptorType != USB_DT_CONFIG) {
351 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
352 head->bDescriptorType);
wdenkaffae2b2002-08-17 09:36:01 +0000353 return -1;
354 }
Julius Wernereaf3e612013-07-19 13:12:08 -0700355 if (head->bLength != USB_DT_CONFIG_SIZE) {
356 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
357 return -1;
358 }
359 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200360 dev->config.no_of_if = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000361
Tom Rix8f8bd562009-10-31 12:37:38 -0500362 index = dev->config.desc.bLength;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200363 /* Ok the first entry must be a configuration entry,
364 * now process the others */
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200365 head = (struct usb_descriptor_header *) &buffer[index];
Julius Wernereaf3e612013-07-19 13:12:08 -0700366 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200367 switch (head->bDescriptorType) {
368 case USB_DT_INTERFACE:
Julius Wernereaf3e612013-07-19 13:12:08 -0700369 if (head->bLength != USB_DT_INTERFACE_SIZE) {
370 printf("ERROR: Invalid USB IF length (%d)\n",
371 head->bLength);
372 break;
373 }
374 if (index + USB_DT_INTERFACE_SIZE >
375 dev->config.desc.wTotalLength) {
376 puts("USB IF descriptor overflowed buffer!\n");
377 break;
378 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200379 if (((struct usb_interface_descriptor *) \
Julius Wernereaf3e612013-07-19 13:12:08 -0700380 head)->bInterfaceNumber != curr_if_num) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200381 /* this is a new interface, copy new desc */
382 ifno = dev->config.no_of_if;
Julius Wernereaf3e612013-07-19 13:12:08 -0700383 if (ifno >= USB_MAXINTERFACES) {
384 puts("Too many USB interfaces!\n");
385 /* try to go on with what we have */
386 return 1;
387 }
Vivek Gautam605bd752013-04-12 16:34:34 +0530388 if_desc = &dev->config.if_desc[ifno];
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200389 dev->config.no_of_if++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700390 memcpy(if_desc, head,
391 USB_DT_INTERFACE_SIZE);
Vivek Gautam605bd752013-04-12 16:34:34 +0530392 if_desc->no_of_ep = 0;
393 if_desc->num_altsetting = 1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200394 curr_if_num =
Vivek Gautam605bd752013-04-12 16:34:34 +0530395 if_desc->desc.bInterfaceNumber;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200396 } else {
397 /* found alternate setting for the interface */
Vivek Gautam605bd752013-04-12 16:34:34 +0530398 if (ifno >= 0) {
399 if_desc = &dev->config.if_desc[ifno];
400 if_desc->num_altsetting++;
401 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200402 }
403 break;
404 case USB_DT_ENDPOINT:
Julius Wernereaf3e612013-07-19 13:12:08 -0700405 if (head->bLength != USB_DT_ENDPOINT_SIZE) {
406 printf("ERROR: Invalid USB EP length (%d)\n",
407 head->bLength);
408 break;
409 }
410 if (index + USB_DT_ENDPOINT_SIZE >
411 dev->config.desc.wTotalLength) {
412 puts("USB EP descriptor overflowed buffer!\n");
413 break;
414 }
415 if (ifno < 0) {
416 puts("Endpoint descriptor out of order!\n");
417 break;
418 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200419 epno = dev->config.if_desc[ifno].no_of_ep;
Vivek Gautam605bd752013-04-12 16:34:34 +0530420 if_desc = &dev->config.if_desc[ifno];
Julius Wernereaf3e612013-07-19 13:12:08 -0700421 if (epno > USB_MAXENDPOINTS) {
422 printf("Interface %d has too many endpoints!\n",
423 if_desc->desc.bInterfaceNumber);
424 return 1;
425 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200426 /* found an endpoint */
Vivek Gautam605bd752013-04-12 16:34:34 +0530427 if_desc->no_of_ep++;
Julius Wernereaf3e612013-07-19 13:12:08 -0700428 memcpy(&if_desc->ep_desc[epno], head,
429 USB_DT_ENDPOINT_SIZE);
Tom Rinib2fb47f2011-12-15 08:40:51 -0700430 ep_wMaxPacketSize = get_unaligned(&dev->config.\
431 if_desc[ifno].\
432 ep_desc[epno].\
433 wMaxPacketSize);
434 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
435 &dev->config.\
436 if_desc[ifno].\
437 ep_desc[epno].\
438 wMaxPacketSize);
Vivek Gautamceb49722013-04-12 16:34:33 +0530439 debug("if %d, ep %d\n", ifno, epno);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200440 break;
Vivek Gautam6497c662013-04-12 16:34:38 +0530441 case USB_DT_SS_ENDPOINT_COMP:
Julius Wernereaf3e612013-07-19 13:12:08 -0700442 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
443 printf("ERROR: Invalid USB EPC length (%d)\n",
444 head->bLength);
445 break;
446 }
447 if (index + USB_DT_SS_EP_COMP_SIZE >
448 dev->config.desc.wTotalLength) {
449 puts("USB EPC descriptor overflowed buffer!\n");
450 break;
451 }
452 if (ifno < 0 || epno < 0) {
453 puts("EPC descriptor out of order!\n");
454 break;
455 }
Vivek Gautam6497c662013-04-12 16:34:38 +0530456 if_desc = &dev->config.if_desc[ifno];
Julius Wernereaf3e612013-07-19 13:12:08 -0700457 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
458 USB_DT_SS_EP_COMP_SIZE);
Vivek Gautam6497c662013-04-12 16:34:38 +0530459 break;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200460 default:
461 if (head->bLength == 0)
462 return 1;
463
Vivek Gautamceb49722013-04-12 16:34:33 +0530464 debug("unknown Description Type : %x\n",
465 head->bDescriptorType);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200466
Vivek Gautamceb49722013-04-12 16:34:33 +0530467#ifdef DEBUG
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200468 {
Wolfgang Denkfad2e1b2011-10-05 23:11:19 +0200469 unsigned char *ch = (unsigned char *)head;
Vivek Gautamceb49722013-04-12 16:34:33 +0530470 int i;
471
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200472 for (i = 0; i < head->bLength; i++)
Vivek Gautamceb49722013-04-12 16:34:33 +0530473 debug("%02X ", *ch++);
474 debug("\n\n\n");
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200475 }
Vivek Gautamceb49722013-04-12 16:34:33 +0530476#endif
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200477 break;
wdenkaffae2b2002-08-17 09:36:01 +0000478 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200479 index += head->bLength;
480 head = (struct usb_descriptor_header *)&buffer[index];
wdenkaffae2b2002-08-17 09:36:01 +0000481 }
482 return 1;
483}
484
485/***********************************************************************
486 * Clears an endpoint
487 * endp: endpoint number in bits 0-3;
488 * direction flag in bit 7 (1 = IN, 0 = OUT)
489 */
490int usb_clear_halt(struct usb_device *dev, int pipe)
491{
492 int result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200493 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
wdenkaffae2b2002-08-17 09:36:01 +0000494
495 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200496 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
497 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
wdenkaffae2b2002-08-17 09:36:01 +0000498
499 /* don't clear if failed */
500 if (result < 0)
501 return result;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200502
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200503 /*
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200504 * NOTE: we do not get status and verify reset was successful
505 * as some devices are reported to lock up upon this check..
506 */
507
wdenkaffae2b2002-08-17 09:36:01 +0000508 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200509
wdenkaffae2b2002-08-17 09:36:01 +0000510 /* toggle is reset on clear */
511 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
512 return 0;
513}
514
515
516/**********************************************************************
517 * get_descriptor type
518 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000519static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200520 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000521{
522 int res;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200523 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
wdenkaffae2b2002-08-17 09:36:01 +0000524 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
525 (type << 8) + index, 0,
526 buf, size, USB_CNTL_TIMEOUT);
527 return res;
528}
529
530/**********************************************************************
531 * gets configuration cfgno and store it in the buffer
532 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200533int usb_get_configuration_no(struct usb_device *dev,
534 unsigned char *buffer, int cfgno)
wdenkaffae2b2002-08-17 09:36:01 +0000535{
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200536 int result;
Julius Wernereaf3e612013-07-19 13:12:08 -0700537 unsigned int length;
Ilya Yanokc60795f2012-11-06 13:48:20 +0000538 struct usb_config_descriptor *config;
wdenkaffae2b2002-08-17 09:36:01 +0000539
Ilya Yanokc60795f2012-11-06 13:48:20 +0000540 config = (struct usb_config_descriptor *)&buffer[0];
Remy Bohmer48867202008-10-10 10:23:21 +0200541 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
542 if (result < 9) {
wdenkaffae2b2002-08-17 09:36:01 +0000543 if (result < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200544 printf("unable to get descriptor, error %lX\n",
545 dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000546 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200547 printf("config descriptor too short " \
Remy Bohmer48867202008-10-10 10:23:21 +0200548 "(expected %i, got %i)\n", 9, result);
wdenkaffae2b2002-08-17 09:36:01 +0000549 return -1;
550 }
Julius Wernereaf3e612013-07-19 13:12:08 -0700551 length = le16_to_cpu(config->wTotalLength);
wdenkaffae2b2002-08-17 09:36:01 +0000552
Julius Wernereaf3e612013-07-19 13:12:08 -0700553 if (length > USB_BUFSIZ) {
554 printf("%s: failed to get descriptor - too long: %d\n",
555 __func__, length);
wdenkcd0a9de2004-02-23 20:48:38 +0000556 return -1;
557 }
558
Julius Wernereaf3e612013-07-19 13:12:08 -0700559 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
560 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, length);
561 config->wTotalLength = length; /* validated, with CPU byte order */
562
wdenkaffae2b2002-08-17 09:36:01 +0000563 return result;
564}
565
566/********************************************************************
567 * set address of a device to the value in dev->devnum.
568 * This can only be done by addressing the device via the default address (0)
569 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000570static int usb_set_address(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000571{
572 int res;
573
Vivek Gautamceb49722013-04-12 16:34:33 +0530574 debug("set address %d\n", dev->devnum);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200575 res = usb_control_msg(dev, usb_snddefctrl(dev),
576 USB_REQ_SET_ADDRESS, 0,
577 (dev->devnum), 0,
578 NULL, 0, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000579 return res;
580}
581
582/********************************************************************
583 * set interface number to interface
584 */
585int usb_set_interface(struct usb_device *dev, int interface, int alternate)
586{
Tom Rix8f8bd562009-10-31 12:37:38 -0500587 struct usb_interface *if_face = NULL;
wdenkaffae2b2002-08-17 09:36:01 +0000588 int ret, i;
589
Tom Rix8f8bd562009-10-31 12:37:38 -0500590 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
591 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
wdenkaffae2b2002-08-17 09:36:01 +0000592 if_face = &dev->config.if_desc[i];
593 break;
594 }
595 }
596 if (!if_face) {
597 printf("selecting invalid interface %d", interface);
598 return -1;
599 }
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200600 /*
601 * We should return now for devices with only one alternate setting.
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200602 * According to 9.4.10 of the Universal Serial Bus Specification
603 * Revision 2.0 such devices can return with a STALL. This results in
604 * some USB sticks timeouting during initialization and then being
605 * unusable in U-Boot.
Bartlomiej Sieka7455af42006-08-02 00:54:18 +0200606 */
607 if (if_face->num_altsetting == 1)
608 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000609
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200610 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
611 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
612 alternate, interface, NULL, 0,
613 USB_CNTL_TIMEOUT * 5);
614 if (ret < 0)
wdenkaffae2b2002-08-17 09:36:01 +0000615 return ret;
616
wdenkaffae2b2002-08-17 09:36:01 +0000617 return 0;
618}
619
620/********************************************************************
621 * set configuration number to configuration
622 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000623static int usb_set_configuration(struct usb_device *dev, int configuration)
wdenkaffae2b2002-08-17 09:36:01 +0000624{
625 int res;
Vivek Gautamceb49722013-04-12 16:34:33 +0530626 debug("set configuration %d\n", configuration);
wdenkaffae2b2002-08-17 09:36:01 +0000627 /* set setup command */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200628 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
629 USB_REQ_SET_CONFIGURATION, 0,
630 configuration, 0,
631 NULL, 0, USB_CNTL_TIMEOUT);
632 if (res == 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000633 dev->toggle[0] = 0;
634 dev->toggle[1] = 0;
635 return 0;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200636 } else
wdenkaffae2b2002-08-17 09:36:01 +0000637 return -1;
638}
639
640/********************************************************************
641 * set protocol to protocol
642 */
643int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
644{
645 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
646 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
647 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
648}
649
650/********************************************************************
651 * set idle
652 */
653int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
654{
655 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
656 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
657 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
658}
659
660/********************************************************************
661 * get report
662 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200663int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
664 unsigned char id, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000665{
666 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200667 USB_REQ_GET_REPORT,
668 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
669 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
wdenkaffae2b2002-08-17 09:36:01 +0000670}
671
672/********************************************************************
673 * get class descriptor
674 */
675int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
676 unsigned char type, unsigned char id, void *buf, int size)
677{
678 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
679 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
680 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
681}
682
683/********************************************************************
684 * get string index in buffer
685 */
Marek Vasutc08b1b22012-02-13 18:58:16 +0000686static int usb_get_string(struct usb_device *dev, unsigned short langid,
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200687 unsigned char index, void *buf, int size)
wdenkaffae2b2002-08-17 09:36:01 +0000688{
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200689 int i;
690 int result;
691
692 for (i = 0; i < 3; ++i) {
693 /* some devices are flaky */
694 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
695 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200696 (USB_DT_STRING << 8) + index, langid, buf, size,
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200697 USB_CNTL_TIMEOUT);
698
699 if (result > 0)
700 break;
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200701 }
702
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200703 return result;
wdenkaffae2b2002-08-17 09:36:01 +0000704}
705
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200706
707static void usb_try_string_workarounds(unsigned char *buf, int *length)
708{
709 int newlength, oldlength = *length;
710
711 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
712 if (!isprint(buf[newlength]) || buf[newlength + 1])
713 break;
714
715 if (newlength > 2) {
716 buf[0] = newlength;
717 *length = newlength;
718 }
719}
720
721
722static int usb_string_sub(struct usb_device *dev, unsigned int langid,
723 unsigned int index, unsigned char *buf)
724{
725 int rc;
726
727 /* Try to read the string descriptor by asking for the maximum
728 * possible number of bytes */
729 rc = usb_get_string(dev, langid, index, buf, 255);
730
731 /* If that failed try to read the descriptor length, then
732 * ask for just that many bytes */
733 if (rc < 2) {
734 rc = usb_get_string(dev, langid, index, buf, 2);
735 if (rc == 2)
736 rc = usb_get_string(dev, langid, index, buf, buf[0]);
737 }
738
739 if (rc >= 2) {
740 if (!buf[0] && !buf[1])
741 usb_try_string_workarounds(buf, &rc);
742
743 /* There might be extra junk at the end of the descriptor */
744 if (buf[0] < rc)
745 rc = buf[0];
746
747 rc = rc - (rc & 1); /* force a multiple of two */
748 }
749
750 if (rc < 2)
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200751 rc = -1;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200752
753 return rc;
754}
755
756
wdenkaffae2b2002-08-17 09:36:01 +0000757/********************************************************************
758 * usb_string:
759 * Get string index and translate it to ascii.
760 * returns string length (> 0) or error (< 0)
761 */
762int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
763{
Puneet Saxenaf5766132012-04-03 14:56:06 +0530764 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000765 unsigned char *tbuf;
766 int err;
767 unsigned int u, idx;
768
769 if (size <= 0 || !buf || !index)
770 return -1;
771 buf[0] = 0;
Wolfgang Denkd0ff51b2008-07-14 15:19:07 +0200772 tbuf = &mybuf[0];
wdenkaffae2b2002-08-17 09:36:01 +0000773
774 /* get langid for strings if it's not yet known */
775 if (!dev->have_langid) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200776 err = usb_string_sub(dev, 0, 0, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000777 if (err < 0) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530778 debug("error getting string descriptor 0 " \
779 "(error=%lx)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +0000780 return -1;
781 } else if (tbuf[0] < 4) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530782 debug("string descriptor 0 too short\n");
wdenkaffae2b2002-08-17 09:36:01 +0000783 return -1;
784 } else {
785 dev->have_langid = -1;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200786 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
wdenkaffae2b2002-08-17 09:36:01 +0000787 /* always use the first langid listed */
Vivek Gautamceb49722013-04-12 16:34:33 +0530788 debug("USB device number %d default " \
789 "language ID 0x%x\n",
790 dev->devnum, dev->string_langid);
wdenkaffae2b2002-08-17 09:36:01 +0000791 }
792 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200793
794 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
wdenkaffae2b2002-08-17 09:36:01 +0000795 if (err < 0)
796 return err;
wdenkcd0a9de2004-02-23 20:48:38 +0000797
wdenkaffae2b2002-08-17 09:36:01 +0000798 size--; /* leave room for trailing NULL char in output buffer */
799 for (idx = 0, u = 2; u < err; u += 2) {
800 if (idx >= size)
801 break;
802 if (tbuf[u+1]) /* high byte */
803 buf[idx++] = '?'; /* non-ASCII character */
804 else
805 buf[idx++] = tbuf[u];
806 }
807 buf[idx] = 0;
808 err = idx;
809 return err;
810}
811
812
813/********************************************************************
814 * USB device handling:
815 * the USB device are static allocated [USB_MAX_DEVICE].
816 */
817
818
819/* returns a pointer to the device with the index [index].
820 * if the device is not assigned (dev->devnum==-1) returns NULL
821 */
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200822struct usb_device *usb_get_dev_index(int index)
wdenkaffae2b2002-08-17 09:36:01 +0000823{
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200824 if (usb_dev[index].devnum == -1)
wdenkaffae2b2002-08-17 09:36:01 +0000825 return NULL;
826 else
827 return &usb_dev[index];
828}
829
wdenkaffae2b2002-08-17 09:36:01 +0000830/* returns a pointer of a new device structure or NULL, if
831 * no device struct is available
832 */
Lucas Stachc7e3b2b2012-09-26 00:14:34 +0200833struct usb_device *usb_alloc_new_device(void *controller)
wdenkaffae2b2002-08-17 09:36:01 +0000834{
835 int i;
Vivek Gautamceb49722013-04-12 16:34:33 +0530836 debug("New Device %d\n", dev_index);
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200837 if (dev_index == USB_MAX_DEVICE) {
838 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
wdenkaffae2b2002-08-17 09:36:01 +0000839 return NULL;
840 }
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200841 /* default Address is 0, real addresses start with 1 */
842 usb_dev[dev_index].devnum = dev_index + 1;
843 usb_dev[dev_index].maxchild = 0;
844 for (i = 0; i < USB_MAXCHILDREN; i++)
845 usb_dev[dev_index].children[i] = NULL;
846 usb_dev[dev_index].parent = NULL;
Lucas Stachc7e3b2b2012-09-26 00:14:34 +0200847 usb_dev[dev_index].controller = controller;
wdenkaffae2b2002-08-17 09:36:01 +0000848 dev_index++;
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200849 return &usb_dev[dev_index - 1];
wdenkaffae2b2002-08-17 09:36:01 +0000850}
851
Milind Choudhary359439d2012-12-12 17:55:28 -0800852/*
853 * Free the newly created device node.
854 * Called in error cases where configuring a newly attached
855 * device fails for some reason.
856 */
857void usb_free_device(void)
858{
859 dev_index--;
Vivek Gautamceb49722013-04-12 16:34:33 +0530860 debug("Freeing device node: %d\n", dev_index);
Milind Choudhary359439d2012-12-12 17:55:28 -0800861 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
862 usb_dev[dev_index].devnum = -1;
863}
wdenkaffae2b2002-08-17 09:36:01 +0000864
865/*
Vivek Gautam5853e132013-09-14 14:02:45 +0530866 * XHCI issues Enable Slot command and thereafter
867 * allocates device contexts. Provide a weak alias
868 * function for the purpose, so that XHCI overrides it
869 * and EHCI/OHCI just work out of the box.
870 */
871__weak int usb_alloc_device(struct usb_device *udev)
872{
873 return 0;
874}
875/*
wdenkaffae2b2002-08-17 09:36:01 +0000876 * By the time we get here, the device has gotten a new device ID
877 * and is in the default state. We need to identify the thing and
878 * get the ball rolling..
879 *
880 * Returns 0 for success, != 0 for error.
881 */
Marek Vasut23faf2b2012-02-13 18:58:17 +0000882int usb_new_device(struct usb_device *dev)
wdenkaffae2b2002-08-17 09:36:01 +0000883{
884 int addr, err;
885 int tmp;
Puneet Saxenaf5766132012-04-03 14:56:06 +0530886 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
wdenkaffae2b2002-08-17 09:36:01 +0000887
Vivek Gautam5853e132013-09-14 14:02:45 +0530888 /*
889 * Allocate usb 3.0 device context.
890 * USB 3.0 (xHCI) protocol tries to allocate device slot
891 * and related data structures first. This call does that.
892 * Refer to sec 4.3.2 in xHCI spec rev1.0
893 */
894 if (usb_alloc_device(dev)) {
895 printf("Cannot allocate device context to get SLOT_ID\n");
896 return -1;
897 }
898
wdenkaffae2b2002-08-17 09:36:01 +0000899 /* We still haven't set the Address yet */
900 addr = dev->devnum;
901 dev->devnum = 0;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200902
Remy Bohmerc9e84362008-09-16 14:55:44 +0200903#ifdef CONFIG_LEGACY_USB_INIT_SEQ
904 /* this is the old and known way of initializing devices, it is
905 * different than what Windows and Linux are doing. Windows and Linux
906 * both retrieve 64 bytes while reading the device descriptor
907 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
908 * invalid header while reading 8 bytes as device descriptor. */
909 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
Remy Bohmer48867202008-10-10 10:23:21 +0200910 dev->maxpacketsize = PACKET_SIZE_8;
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100911 dev->epmaxpacketin[0] = 8;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200912 dev->epmaxpacketout[0] = 8;
913
Ilya Yanok80ab4142012-07-15 04:43:50 +0000914 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8);
Remy Bohmerc9e84362008-09-16 14:55:44 +0200915 if (err < 8) {
916 printf("\n USB device not responding, " \
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100917 "giving up (status=%lX)\n", dev->status);
Remy Bohmerc9e84362008-09-16 14:55:44 +0200918 return 1;
919 }
Ilya Yanok80ab4142012-07-15 04:43:50 +0000920 memcpy(&dev->descriptor, tmpbuf, 8);
Remy Bohmerc9e84362008-09-16 14:55:44 +0200921#else
Remy Bohmer48867202008-10-10 10:23:21 +0200922 /* This is a Windows scheme of initialization sequence, with double
923 * reset of the device (Linux uses the same sequence)
Remy Bohmerc9e84362008-09-16 14:55:44 +0200924 * Some equipment is said to work only with such init sequence; this
925 * patch is based on the work by Alan Stern:
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100926 * http://sourceforge.net/mailarchive/forum.php?
927 * thread_id=5729457&forum_id=5398
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200928 */
Vivek Gautam5853e132013-09-14 14:02:45 +0530929 __maybe_unused struct usb_device_descriptor *desc;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200930 struct usb_device *parent = dev->parent;
931 unsigned short portstatus;
932
933 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
934 * only 18 bytes long, this will terminate with a short packet. But if
935 * the maxpacket size is 8 or 16 the device may be waiting to transmit
Remy Bohmerc9e84362008-09-16 14:55:44 +0200936 * some more, or keeps on retransmitting the 8 byte header. */
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200937
938 desc = (struct usb_device_descriptor *)tmpbuf;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200939 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
Remy Bohmer48867202008-10-10 10:23:21 +0200940 /* Default to 64 byte max packet size */
941 dev->maxpacketsize = PACKET_SIZE_64;
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100942 dev->epmaxpacketin[0] = 64;
Remy Bohmerc9e84362008-09-16 14:55:44 +0200943 dev->epmaxpacketout[0] = 64;
Remy Bohmer48867202008-10-10 10:23:21 +0200944
Vivek Gautam5853e132013-09-14 14:02:45 +0530945 /*
946 * XHCI needs to issue a Address device command to setup
947 * proper device context structures, before it can interact
948 * with the device. So a get_descriptor will fail before any
949 * of that is done for XHCI unlike EHCI.
950 */
951#ifndef CONFIG_USB_XHCI
Remy Bohmer48867202008-10-10 10:23:21 +0200952 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
953 if (err < 0) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530954 debug("usb_new_device: usb_get_descriptor() failed\n");
Remy Bohmer48867202008-10-10 10:23:21 +0200955 return 1;
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200956 }
Remy Bohmer48867202008-10-10 10:23:21 +0200957
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200958 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
Vivek Gautam99c34912013-04-12 16:34:36 +0530959 /*
960 * Fetch the device class, driver can use this info
961 * to differentiate between HUB and DEVICE.
962 */
963 dev->descriptor.bDeviceClass = desc->bDeviceClass;
Vivek Gautam5853e132013-09-14 14:02:45 +0530964#endif
Wolfgang Denk095b8a32005-08-02 17:06:17 +0200965
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200966 if (parent) {
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200967 /* reset the port for the second time */
Hans de Goedef7b9baf2014-09-20 17:03:52 +0200968 err = hub_port_reset(dev->parent, dev->portnr - 1, &portstatus);
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200969 if (err < 0) {
Hans de Goedef7b9baf2014-09-20 17:03:52 +0200970 printf("\n Couldn't reset port %i\n", dev->portnr);
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200971 return 1;
972 }
Hans de Goede90cdc102015-01-11 20:34:51 +0100973 } else {
974 usb_reset_root_port();
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200975 }
Wolfgang Denk9c998aa2005-07-21 11:57:57 +0200976#endif
977
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100978 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
wdenkaffae2b2002-08-17 09:36:01 +0000979 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
980 switch (dev->descriptor.bMaxPacketSize0) {
Michael Trimarchide39f8c2008-11-26 17:41:34 +0100981 case 8:
982 dev->maxpacketsize = PACKET_SIZE_8;
983 break;
984 case 16:
985 dev->maxpacketsize = PACKET_SIZE_16;
986 break;
987 case 32:
988 dev->maxpacketsize = PACKET_SIZE_32;
989 break;
990 case 64:
991 dev->maxpacketsize = PACKET_SIZE_64;
992 break;
wdenkaffae2b2002-08-17 09:36:01 +0000993 }
994 dev->devnum = addr;
995
996 err = usb_set_address(dev); /* set address */
997
998 if (err < 0) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +0200999 printf("\n USB device not accepting new address " \
1000 "(error=%lX)\n", dev->status);
wdenkaffae2b2002-08-17 09:36:01 +00001001 return 1;
1002 }
1003
Mike Frysinger5b84dd62012-03-05 13:47:00 +00001004 mdelay(10); /* Let the SET_ADDRESS settle */
wdenkaffae2b2002-08-17 09:36:01 +00001005
1006 tmp = sizeof(dev->descriptor);
1007
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001008 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
Ilya Yanok80ab4142012-07-15 04:43:50 +00001009 tmpbuf, sizeof(dev->descriptor));
wdenkaffae2b2002-08-17 09:36:01 +00001010 if (err < tmp) {
1011 if (err < 0)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001012 printf("unable to get device descriptor (error=%d)\n",
1013 err);
wdenkaffae2b2002-08-17 09:36:01 +00001014 else
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001015 printf("USB device descriptor short read " \
1016 "(expected %i, got %i)\n", tmp, err);
wdenkaffae2b2002-08-17 09:36:01 +00001017 return 1;
1018 }
Ilya Yanok80ab4142012-07-15 04:43:50 +00001019 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
wdenkaffae2b2002-08-17 09:36:01 +00001020 /* correct le values */
Christian Eggersc9182612008-05-21 22:12:00 +02001021 le16_to_cpus(&dev->descriptor.bcdUSB);
1022 le16_to_cpus(&dev->descriptor.idVendor);
1023 le16_to_cpus(&dev->descriptor.idProduct);
1024 le16_to_cpus(&dev->descriptor.bcdDevice);
wdenkaffae2b2002-08-17 09:36:01 +00001025 /* only support for one config for now */
Vincent Palatin8b8d7792012-07-24 07:12:02 +00001026 err = usb_get_configuration_no(dev, tmpbuf, 0);
1027 if (err < 0) {
1028 printf("usb_new_device: Cannot read configuration, " \
1029 "skipping device %04x:%04x\n",
1030 dev->descriptor.idVendor, dev->descriptor.idProduct);
1031 return -1;
1032 }
Puneet Saxenaf5766132012-04-03 14:56:06 +05301033 usb_parse_config(dev, tmpbuf, 0);
wdenkaffae2b2002-08-17 09:36:01 +00001034 usb_set_maxpacket(dev);
1035 /* we set the default configuration here */
Tom Rix8f8bd562009-10-31 12:37:38 -05001036 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001037 printf("failed to set default configuration " \
1038 "len %d, status %lX\n", dev->act_len, dev->status);
wdenkaffae2b2002-08-17 09:36:01 +00001039 return -1;
1040 }
Vivek Gautamceb49722013-04-12 16:34:33 +05301041 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1042 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1043 dev->descriptor.iSerialNumber);
wdenkaffae2b2002-08-17 09:36:01 +00001044 memset(dev->mf, 0, sizeof(dev->mf));
1045 memset(dev->prod, 0, sizeof(dev->prod));
1046 memset(dev->serial, 0, sizeof(dev->serial));
1047 if (dev->descriptor.iManufacturer)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001048 usb_string(dev, dev->descriptor.iManufacturer,
1049 dev->mf, sizeof(dev->mf));
wdenkaffae2b2002-08-17 09:36:01 +00001050 if (dev->descriptor.iProduct)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001051 usb_string(dev, dev->descriptor.iProduct,
1052 dev->prod, sizeof(dev->prod));
wdenkaffae2b2002-08-17 09:36:01 +00001053 if (dev->descriptor.iSerialNumber)
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001054 usb_string(dev, dev->descriptor.iSerialNumber,
1055 dev->serial, sizeof(dev->serial));
Vivek Gautamceb49722013-04-12 16:34:33 +05301056 debug("Manufacturer %s\n", dev->mf);
1057 debug("Product %s\n", dev->prod);
1058 debug("SerialNumber %s\n", dev->serial);
wdenkaffae2b2002-08-17 09:36:01 +00001059 /* now prode if the device is a hub */
Remy Bohmer6f5794a2008-09-16 14:55:43 +02001060 usb_hub_probe(dev, 0);
wdenkaffae2b2002-08-17 09:36:01 +00001061 return 0;
1062}
1063
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001064__weak
Troy Kiskybba67912013-10-10 15:27:55 -07001065int board_usb_init(int index, enum usb_init_type init)
Mateusz Zalega16297cf2013-10-04 19:22:26 +02001066{
1067 return 0;
1068}
wdenkaffae2b2002-08-17 09:36:01 +00001069/* EOF */