3 * Most of this source has been derived from the Linux USB
5 * (C) Copyright Linus Torvalds 1999
6 * (C) Copyright Johannes Erdfelt 1999-2001
7 * (C) Copyright Andreas Gal 1999
8 * (C) Copyright Gregory P. Smith 1999
9 * (C) Copyright Deti Fliegl 1999 (new USB architecture)
10 * (C) Copyright Randy Dunlap 2000
11 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
12 * (C) Copyright Yggdrasil Computing, Inc. 2000
13 * (usb_device_id matching changes by Adam J. Richter)
16 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
18 * See file CREDITS for list of people who contributed to this
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU General Public License as
23 * published by the Free Software Foundation; either version 2 of
24 * the License, or (at your option) any later version.
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
31 * You should have received a copy of the GNU General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
41 * Since this is a bootloader, the devices will not be automatic
42 * (re)configured on hotplug, but after a restart of the USB the
45 * For each transfer (except "Interrupt") we wait for completion.
49 #include <asm/processor.h>
50 #include <linux/compiler.h>
51 #include <linux/ctype.h>
52 #include <asm/byteorder.h>
53 #include <asm/unaligned.h>
57 #include <asm/4xx_pci.h>
62 #define USB_HUB_DEBUG 1
65 #define USB_HUB_DEBUG 0
68 #define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args)
69 #define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args)
71 #define USB_BUFSIZ 512
73 static struct usb_device usb_dev[USB_MAX_DEVICE];
76 static int asynch_allowed;
78 char usb_started; /* flag for the started/stopped USB status */
79 void *ctrl; /* goes away in a following commit, but don't break bisect */
81 /**********************************************************************
82 * some forward declerations...
84 static void usb_scan_devices(void);
86 /***************************************************************************
98 /* init low_level USB */
100 result = usb_lowlevel_init(0, &ctrl);
101 /* if lowlevel init is OK, scan the bus for devices
102 * i.e. search HUBs and configure them */
104 printf("scanning bus for devices... ");
110 printf("Error, couldn't init Lowlevel part\n");
116 /******************************************************************************
117 * Stop USB this stops the LowLevel Part and deregisters USB devices.
127 res = usb_lowlevel_stop(0);
133 * disables the asynch behaviour of the control message. This is used for data
134 * transfers that uses the exclusiv access to the control and bulk messages.
135 * Returns the old value so it can be restored later.
137 int usb_disable_asynch(int disable)
139 int old_value = asynch_allowed;
141 asynch_allowed = !disable;
146 /*-------------------------------------------------------------------
152 * submits an Interrupt Message
154 int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
155 void *buffer, int transfer_len, int interval)
157 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
161 * submits a control message and waits for comletion (at least timeout * 1ms)
162 * If timeout is 0, we don't wait for completion (used as example to set and
163 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
164 * allow control messages with 0 timeout, by previousely resetting the flag
165 * asynch_allowed (usb_disable_asynch(1)).
166 * returns the transfered length if OK or -1 if error. The transfered length
167 * and the current status are stored in the dev->act_len and dev->status.
169 int usb_control_msg(struct usb_device *dev, unsigned int pipe,
170 unsigned char request, unsigned char requesttype,
171 unsigned short value, unsigned short index,
172 void *data, unsigned short size, int timeout)
174 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
176 if ((timeout == 0) && (!asynch_allowed)) {
177 /* request for a asynch control pipe is not allowed */
181 /* set setup command */
182 setup_packet->requesttype = requesttype;
183 setup_packet->request = request;
184 setup_packet->value = cpu_to_le16(value);
185 setup_packet->index = cpu_to_le16(index);
186 setup_packet->length = cpu_to_le16(size);
187 USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
188 "value 0x%X index 0x%X length 0x%X\n",
189 request, requesttype, value, index, size);
190 dev->status = USB_ST_NOT_PROC; /*not yet processed */
192 if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
198 * Wait for status to update until timeout expires, USB driver
199 * interrupt handler may set the status when the USB operation has
203 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
214 /*-------------------------------------------------------------------
215 * submits bulk message, and waits for completion. returns 0 if Ok or
217 * synchronous behavior
219 int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
220 void *data, int len, int *actual_length, int timeout)
224 dev->status = USB_ST_NOT_PROC; /*not yet processed */
225 if (submit_bulk_msg(dev, pipe, data, len) < 0)
228 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
232 *actual_length = dev->act_len;
233 if (dev->status == 0)
240 /*-------------------------------------------------------------------
245 * returns the max packet size, depending on the pipe direction and
246 * the configurations values
248 int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
250 /* direction is out -> use emaxpacket out */
251 if ((pipe & USB_DIR_IN) == 0)
252 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
254 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
258 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
259 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
260 * when it is inlined in 1 single routine. What happens is that the register r3
261 * is used as loop-count 'i', but gets overwritten later on.
262 * This is clearly a compiler bug, but it is easier to workaround it here than
263 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
264 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
266 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
269 usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
272 struct usb_endpoint_descriptor *ep;
273 u16 ep_wMaxPacketSize;
275 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
277 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
278 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
280 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
281 USB_ENDPOINT_XFER_CONTROL) {
282 /* Control => bidirectional */
283 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
284 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
285 USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n",
286 b, dev->epmaxpacketin[b]);
288 if ((ep->bEndpointAddress & 0x80) == 0) {
290 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
291 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
292 USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",
293 b, dev->epmaxpacketout[b]);
297 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
298 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
299 USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",
300 b, dev->epmaxpacketin[b]);
307 * set the max packed value of all endpoints in the given configuration
309 static int usb_set_maxpacket(struct usb_device *dev)
313 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
314 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
315 usb_set_maxpacket_ep(dev, i, ii);
320 /*******************************************************************************
321 * Parse the config, located in buffer, and fills the dev->config structure.
322 * Note that all little/big endian swapping are done automatically.
324 static int usb_parse_config(struct usb_device *dev,
325 unsigned char *buffer, int cfgno)
327 struct usb_descriptor_header *head;
328 int index, ifno, epno, curr_if_num;
330 u16 ep_wMaxPacketSize;
336 dev->configno = cfgno;
337 head = (struct usb_descriptor_header *) &buffer[0];
338 if (head->bDescriptorType != USB_DT_CONFIG) {
339 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
340 head->bDescriptorType);
343 memcpy(&dev->config, buffer, buffer[0]);
344 le16_to_cpus(&(dev->config.desc.wTotalLength));
345 dev->config.no_of_if = 0;
347 index = dev->config.desc.bLength;
348 /* Ok the first entry must be a configuration entry,
349 * now process the others */
350 head = (struct usb_descriptor_header *) &buffer[index];
351 while (index + 1 < dev->config.desc.wTotalLength) {
352 switch (head->bDescriptorType) {
353 case USB_DT_INTERFACE:
354 if (((struct usb_interface_descriptor *) \
355 &buffer[index])->bInterfaceNumber != curr_if_num) {
356 /* this is a new interface, copy new desc */
357 ifno = dev->config.no_of_if;
358 dev->config.no_of_if++;
359 memcpy(&dev->config.if_desc[ifno],
360 &buffer[index], buffer[index]);
361 dev->config.if_desc[ifno].no_of_ep = 0;
362 dev->config.if_desc[ifno].num_altsetting = 1;
364 dev->config.if_desc[ifno].desc.bInterfaceNumber;
366 /* found alternate setting for the interface */
367 dev->config.if_desc[ifno].num_altsetting++;
370 case USB_DT_ENDPOINT:
371 epno = dev->config.if_desc[ifno].no_of_ep;
372 /* found an endpoint */
373 dev->config.if_desc[ifno].no_of_ep++;
374 memcpy(&dev->config.if_desc[ifno].ep_desc[epno],
375 &buffer[index], buffer[index]);
376 ep_wMaxPacketSize = get_unaligned(&dev->config.\
380 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
385 USB_PRINTF("if %d, ep %d\n", ifno, epno);
388 if (head->bLength == 0)
391 USB_PRINTF("unknown Description Type : %x\n",
392 head->bDescriptorType);
396 unsigned char *ch = (unsigned char *)head;
398 for (i = 0; i < head->bLength; i++)
399 USB_PRINTF("%02X ", *ch++);
400 USB_PRINTF("\n\n\n");
404 index += head->bLength;
405 head = (struct usb_descriptor_header *)&buffer[index];
410 /***********************************************************************
412 * endp: endpoint number in bits 0-3;
413 * direction flag in bit 7 (1 = IN, 0 = OUT)
415 int usb_clear_halt(struct usb_device *dev, int pipe)
418 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
420 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
421 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
422 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
424 /* don't clear if failed */
429 * NOTE: we do not get status and verify reset was successful
430 * as some devices are reported to lock up upon this check..
433 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
435 /* toggle is reset on clear */
436 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
441 /**********************************************************************
442 * get_descriptor type
444 static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
445 unsigned char index, void *buf, int size)
448 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
449 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
450 (type << 8) + index, 0,
451 buf, size, USB_CNTL_TIMEOUT);
455 /**********************************************************************
456 * gets configuration cfgno and store it in the buffer
458 int usb_get_configuration_no(struct usb_device *dev,
459 unsigned char *buffer, int cfgno)
463 struct usb_configuration_descriptor *config;
465 config = (struct usb_configuration_descriptor *)&buffer[0];
466 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
469 printf("unable to get descriptor, error %lX\n",
472 printf("config descriptor too short " \
473 "(expected %i, got %i)\n", 9, result);
476 tmp = le16_to_cpu(config->wTotalLength);
478 if (tmp > USB_BUFSIZ) {
479 USB_PRINTF("usb_get_configuration_no: failed to get " \
480 "descriptor - too long: %d\n", tmp);
484 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
485 USB_PRINTF("get_conf_no %d Result %d, wLength %d\n",
490 /********************************************************************
491 * set address of a device to the value in dev->devnum.
492 * This can only be done by addressing the device via the default address (0)
494 static int usb_set_address(struct usb_device *dev)
498 USB_PRINTF("set address %d\n", dev->devnum);
499 res = usb_control_msg(dev, usb_snddefctrl(dev),
500 USB_REQ_SET_ADDRESS, 0,
502 NULL, 0, USB_CNTL_TIMEOUT);
506 /********************************************************************
507 * set interface number to interface
509 int usb_set_interface(struct usb_device *dev, int interface, int alternate)
511 struct usb_interface *if_face = NULL;
514 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
515 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
516 if_face = &dev->config.if_desc[i];
521 printf("selecting invalid interface %d", interface);
525 * We should return now for devices with only one alternate setting.
526 * According to 9.4.10 of the Universal Serial Bus Specification
527 * Revision 2.0 such devices can return with a STALL. This results in
528 * some USB sticks timeouting during initialization and then being
529 * unusable in U-Boot.
531 if (if_face->num_altsetting == 1)
534 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
535 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
536 alternate, interface, NULL, 0,
537 USB_CNTL_TIMEOUT * 5);
544 /********************************************************************
545 * set configuration number to configuration
547 static int usb_set_configuration(struct usb_device *dev, int configuration)
550 USB_PRINTF("set configuration %d\n", configuration);
551 /* set setup command */
552 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
553 USB_REQ_SET_CONFIGURATION, 0,
555 NULL, 0, USB_CNTL_TIMEOUT);
564 /********************************************************************
565 * set protocol to protocol
567 int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
569 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
570 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
571 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
574 /********************************************************************
577 int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
579 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
580 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
581 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
584 /********************************************************************
587 int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
588 unsigned char id, void *buf, int size)
590 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
592 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
593 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
596 /********************************************************************
597 * get class descriptor
599 int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
600 unsigned char type, unsigned char id, void *buf, int size)
602 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
603 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
604 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
607 /********************************************************************
608 * get string index in buffer
610 static int usb_get_string(struct usb_device *dev, unsigned short langid,
611 unsigned char index, void *buf, int size)
616 for (i = 0; i < 3; ++i) {
617 /* some devices are flaky */
618 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
619 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
620 (USB_DT_STRING << 8) + index, langid, buf, size,
631 static void usb_try_string_workarounds(unsigned char *buf, int *length)
633 int newlength, oldlength = *length;
635 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
636 if (!isprint(buf[newlength]) || buf[newlength + 1])
646 static int usb_string_sub(struct usb_device *dev, unsigned int langid,
647 unsigned int index, unsigned char *buf)
651 /* Try to read the string descriptor by asking for the maximum
652 * possible number of bytes */
653 rc = usb_get_string(dev, langid, index, buf, 255);
655 /* If that failed try to read the descriptor length, then
656 * ask for just that many bytes */
658 rc = usb_get_string(dev, langid, index, buf, 2);
660 rc = usb_get_string(dev, langid, index, buf, buf[0]);
664 if (!buf[0] && !buf[1])
665 usb_try_string_workarounds(buf, &rc);
667 /* There might be extra junk at the end of the descriptor */
671 rc = rc - (rc & 1); /* force a multiple of two */
681 /********************************************************************
683 * Get string index and translate it to ascii.
684 * returns string length (> 0) or error (< 0)
686 int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
688 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
693 if (size <= 0 || !buf || !index)
698 /* get langid for strings if it's not yet known */
699 if (!dev->have_langid) {
700 err = usb_string_sub(dev, 0, 0, tbuf);
702 USB_PRINTF("error getting string descriptor 0 " \
703 "(error=%lx)\n", dev->status);
705 } else if (tbuf[0] < 4) {
706 USB_PRINTF("string descriptor 0 too short\n");
709 dev->have_langid = -1;
710 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
711 /* always use the first langid listed */
712 USB_PRINTF("USB device number %d default " \
713 "language ID 0x%x\n",
714 dev->devnum, dev->string_langid);
718 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
722 size--; /* leave room for trailing NULL char in output buffer */
723 for (idx = 0, u = 2; u < err; u += 2) {
726 if (tbuf[u+1]) /* high byte */
727 buf[idx++] = '?'; /* non-ASCII character */
729 buf[idx++] = tbuf[u];
737 /********************************************************************
738 * USB device handling:
739 * the USB device are static allocated [USB_MAX_DEVICE].
743 /* returns a pointer to the device with the index [index].
744 * if the device is not assigned (dev->devnum==-1) returns NULL
746 struct usb_device *usb_get_dev_index(int index)
748 if (usb_dev[index].devnum == -1)
751 return &usb_dev[index];
755 /* returns a pointer of a new device structure or NULL, if
756 * no device struct is available
758 struct usb_device *usb_alloc_new_device(void *controller)
761 USB_PRINTF("New Device %d\n", dev_index);
762 if (dev_index == USB_MAX_DEVICE) {
763 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
766 /* default Address is 0, real addresses start with 1 */
767 usb_dev[dev_index].devnum = dev_index + 1;
768 usb_dev[dev_index].maxchild = 0;
769 for (i = 0; i < USB_MAXCHILDREN; i++)
770 usb_dev[dev_index].children[i] = NULL;
771 usb_dev[dev_index].parent = NULL;
772 usb_dev[dev_index].controller = controller;
774 return &usb_dev[dev_index - 1];
779 * By the time we get here, the device has gotten a new device ID
780 * and is in the default state. We need to identify the thing and
781 * get the ball rolling..
783 * Returns 0 for success, != 0 for error.
785 int usb_new_device(struct usb_device *dev)
789 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
791 /* We still haven't set the Address yet */
795 #ifdef CONFIG_LEGACY_USB_INIT_SEQ
796 /* this is the old and known way of initializing devices, it is
797 * different than what Windows and Linux are doing. Windows and Linux
798 * both retrieve 64 bytes while reading the device descriptor
799 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
800 * invalid header while reading 8 bytes as device descriptor. */
801 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
802 dev->maxpacketsize = PACKET_SIZE_8;
803 dev->epmaxpacketin[0] = 8;
804 dev->epmaxpacketout[0] = 8;
806 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8);
808 printf("\n USB device not responding, " \
809 "giving up (status=%lX)\n", dev->status);
812 memcpy(&dev->descriptor, tmpbuf, 8);
814 /* This is a Windows scheme of initialization sequence, with double
815 * reset of the device (Linux uses the same sequence)
816 * Some equipment is said to work only with such init sequence; this
817 * patch is based on the work by Alan Stern:
818 * http://sourceforge.net/mailarchive/forum.php?
819 * thread_id=5729457&forum_id=5398
821 struct usb_device_descriptor *desc;
823 struct usb_device *parent = dev->parent;
824 unsigned short portstatus;
826 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
827 * only 18 bytes long, this will terminate with a short packet. But if
828 * the maxpacket size is 8 or 16 the device may be waiting to transmit
829 * some more, or keeps on retransmitting the 8 byte header. */
831 desc = (struct usb_device_descriptor *)tmpbuf;
832 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
833 /* Default to 64 byte max packet size */
834 dev->maxpacketsize = PACKET_SIZE_64;
835 dev->epmaxpacketin[0] = 64;
836 dev->epmaxpacketout[0] = 64;
838 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
840 USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n");
844 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
846 /* find the port number we're at */
850 for (j = 0; j < parent->maxchild; j++) {
851 if (parent->children[j] == dev) {
857 printf("usb_new_device:cannot locate device's port.\n");
861 /* reset the port for the second time */
862 err = hub_port_reset(dev->parent, port, &portstatus);
864 printf("\n Couldn't reset port %i\n", port);
870 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
871 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
872 switch (dev->descriptor.bMaxPacketSize0) {
874 dev->maxpacketsize = PACKET_SIZE_8;
877 dev->maxpacketsize = PACKET_SIZE_16;
880 dev->maxpacketsize = PACKET_SIZE_32;
883 dev->maxpacketsize = PACKET_SIZE_64;
888 err = usb_set_address(dev); /* set address */
891 printf("\n USB device not accepting new address " \
892 "(error=%lX)\n", dev->status);
896 mdelay(10); /* Let the SET_ADDRESS settle */
898 tmp = sizeof(dev->descriptor);
900 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
901 tmpbuf, sizeof(dev->descriptor));
904 printf("unable to get device descriptor (error=%d)\n",
907 printf("USB device descriptor short read " \
908 "(expected %i, got %i)\n", tmp, err);
911 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
912 /* correct le values */
913 le16_to_cpus(&dev->descriptor.bcdUSB);
914 le16_to_cpus(&dev->descriptor.idVendor);
915 le16_to_cpus(&dev->descriptor.idProduct);
916 le16_to_cpus(&dev->descriptor.bcdDevice);
917 /* only support for one config for now */
918 usb_get_configuration_no(dev, tmpbuf, 0);
919 usb_parse_config(dev, tmpbuf, 0);
920 usb_set_maxpacket(dev);
921 /* we set the default configuration here */
922 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
923 printf("failed to set default configuration " \
924 "len %d, status %lX\n", dev->act_len, dev->status);
927 USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
928 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
929 dev->descriptor.iSerialNumber);
930 memset(dev->mf, 0, sizeof(dev->mf));
931 memset(dev->prod, 0, sizeof(dev->prod));
932 memset(dev->serial, 0, sizeof(dev->serial));
933 if (dev->descriptor.iManufacturer)
934 usb_string(dev, dev->descriptor.iManufacturer,
935 dev->mf, sizeof(dev->mf));
936 if (dev->descriptor.iProduct)
937 usb_string(dev, dev->descriptor.iProduct,
938 dev->prod, sizeof(dev->prod));
939 if (dev->descriptor.iSerialNumber)
940 usb_string(dev, dev->descriptor.iSerialNumber,
941 dev->serial, sizeof(dev->serial));
942 USB_PRINTF("Manufacturer %s\n", dev->mf);
943 USB_PRINTF("Product %s\n", dev->prod);
944 USB_PRINTF("SerialNumber %s\n", dev->serial);
945 /* now prode if the device is a hub */
946 usb_hub_probe(dev, 0);
950 /* build device Tree */
951 static void usb_scan_devices(void)
954 struct usb_device *dev;
956 /* first make all devices unknown */
957 for (i = 0; i < USB_MAX_DEVICE; i++) {
958 memset(&usb_dev[i], 0, sizeof(struct usb_device));
959 usb_dev[i].devnum = -1;
962 /* device 0 is always present (root hub, so let it analyze) */
963 dev = usb_alloc_new_device(ctrl);
964 if (usb_new_device(dev))
965 printf("No USB Device found\n");
967 printf("%d USB Device(s) found\n", dev_index);
968 /* insert "driver" if possible */
969 #ifdef CONFIG_USB_KEYBOARD
972 USB_PRINTF("scan end\n");