2 * Most of this source has been derived from the Linux USB
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)
15 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
17 * SPDX-License-Identifier: GPL-2.0+
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
27 * For each transfer (except "Interrupt") we wait for completion.
31 #include <asm/processor.h>
32 #include <linux/compiler.h>
33 #include <linux/ctype.h>
34 #include <asm/byteorder.h>
35 #include <asm/unaligned.h>
39 #include <asm/4xx_pci.h>
42 #define USB_BUFSIZ 512
44 static struct usb_device usb_dev[USB_MAX_DEVICE];
46 static int asynch_allowed;
48 char usb_started; /* flag for the started/stopped USB status */
50 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
51 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
54 /***************************************************************************
60 struct usb_device *dev;
61 int i, start_index = 0;
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;
73 /* init low_level USB */
74 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
75 /* init low_level USB */
77 if (usb_lowlevel_init(i, &ctrl)) {
78 puts("lowlevel init failed\n");
82 * lowlevel init is OK, now scan the bus for devices
83 * i.e. search HUBs and configure them
85 start_index = dev_index;
86 printf("scanning bus %d for devices... ", i);
87 dev = usb_alloc_new_device(ctrl);
89 * device 0 is always present
90 * (root hub, so let it analyze)
95 if (start_index == dev_index)
96 puts("No USB Device found\n");
98 printf("%d USB Device(s) found\n",
99 dev_index - start_index);
105 /* if we were not able to find at least one working bus, bail out */
107 puts("USB error: all controllers failed lowlevel init\n");
114 /******************************************************************************
115 * Stop USB this stops the LowLevel Part and deregisters USB devices.
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);
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.
138 * Returns the old value so it can be restored later.
140 int usb_disable_asynch(int disable)
142 int old_value = asynch_allowed;
144 asynch_allowed = !disable;
149 /*-------------------------------------------------------------------
155 * submits an Interrupt Message
157 int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
158 void *buffer, int transfer_len, int interval)
160 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
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.
172 int 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)
177 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
179 if ((timeout == 0) && (!asynch_allowed)) {
180 /* request for a asynch control pipe is not allowed */
184 /* set setup command */
185 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);
190 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);
193 dev->status = USB_ST_NOT_PROC; /*not yet processed */
195 if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
201 * Wait for status to update until timeout expires, USB driver
202 * interrupt handler may set the status when the USB operation has
206 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
217 /*-------------------------------------------------------------------
218 * submits bulk message, and waits for completion. returns 0 if Ok or
220 * synchronous behavior
222 int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
223 void *data, int len, int *actual_length, int timeout)
227 dev->status = USB_ST_NOT_PROC; /*not yet processed */
228 if (submit_bulk_msg(dev, pipe, data, len) < 0)
231 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
235 *actual_length = dev->act_len;
236 if (dev->status == 0)
243 /*-------------------------------------------------------------------
248 * returns the max packet size, depending on the pipe direction and
249 * the configurations values
251 int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
253 /* direction is out -> use emaxpacket out */
254 if ((pipe & USB_DIR_IN) == 0)
255 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
257 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
261 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
262 * 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)
269 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
272 usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
275 struct usb_endpoint_descriptor *ep;
276 u16 ep_wMaxPacketSize;
278 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
280 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
281 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
283 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
284 USB_ENDPOINT_XFER_CONTROL) {
285 /* Control => bidirectional */
286 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
287 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
288 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
289 b, dev->epmaxpacketin[b]);
291 if ((ep->bEndpointAddress & 0x80) == 0) {
293 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
294 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
295 debug("##EP epmaxpacketout[%d] = %d\n",
296 b, dev->epmaxpacketout[b]);
300 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
301 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
302 debug("##EP epmaxpacketin[%d] = %d\n",
303 b, dev->epmaxpacketin[b]);
310 * set the max packed value of all endpoints in the given configuration
312 static int usb_set_maxpacket(struct usb_device *dev)
316 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
317 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
318 usb_set_maxpacket_ep(dev, i, ii);
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.
327 static int usb_parse_config(struct usb_device *dev,
328 unsigned char *buffer, int cfgno)
330 struct usb_descriptor_header *head;
331 int index, ifno, epno, curr_if_num;
332 u16 ep_wMaxPacketSize;
333 struct usb_interface *if_desc = NULL;
339 dev->configno = cfgno;
340 head = (struct usb_descriptor_header *) &buffer[0];
341 if (head->bDescriptorType != USB_DT_CONFIG) {
342 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
343 head->bDescriptorType);
346 memcpy(&dev->config, buffer, buffer[0]);
347 le16_to_cpus(&(dev->config.desc.wTotalLength));
348 dev->config.no_of_if = 0;
350 index = dev->config.desc.bLength;
351 /* Ok the first entry must be a configuration entry,
352 * now process the others */
353 head = (struct usb_descriptor_header *) &buffer[index];
354 while (index + 1 < dev->config.desc.wTotalLength) {
355 switch (head->bDescriptorType) {
356 case USB_DT_INTERFACE:
357 if (((struct usb_interface_descriptor *) \
358 &buffer[index])->bInterfaceNumber != curr_if_num) {
359 /* this is a new interface, copy new desc */
360 ifno = dev->config.no_of_if;
361 if_desc = &dev->config.if_desc[ifno];
362 dev->config.no_of_if++;
363 memcpy(if_desc, &buffer[index], buffer[index]);
364 if_desc->no_of_ep = 0;
365 if_desc->num_altsetting = 1;
367 if_desc->desc.bInterfaceNumber;
369 /* found alternate setting for the interface */
371 if_desc = &dev->config.if_desc[ifno];
372 if_desc->num_altsetting++;
376 case USB_DT_ENDPOINT:
377 epno = dev->config.if_desc[ifno].no_of_ep;
378 if_desc = &dev->config.if_desc[ifno];
379 /* found an endpoint */
381 memcpy(&if_desc->ep_desc[epno],
382 &buffer[index], buffer[index]);
383 ep_wMaxPacketSize = get_unaligned(&dev->config.\
387 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
392 debug("if %d, ep %d\n", ifno, epno);
394 case USB_DT_SS_ENDPOINT_COMP:
395 if_desc = &dev->config.if_desc[ifno];
396 memcpy(&if_desc->ss_ep_comp_desc[epno],
397 &buffer[index], buffer[index]);
400 if (head->bLength == 0)
403 debug("unknown Description Type : %x\n",
404 head->bDescriptorType);
408 unsigned char *ch = (unsigned char *)head;
411 for (i = 0; i < head->bLength; i++)
412 debug("%02X ", *ch++);
418 index += head->bLength;
419 head = (struct usb_descriptor_header *)&buffer[index];
424 /***********************************************************************
426 * endp: endpoint number in bits 0-3;
427 * direction flag in bit 7 (1 = IN, 0 = OUT)
429 int usb_clear_halt(struct usb_device *dev, int pipe)
432 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
434 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
435 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
436 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
438 /* don't clear if failed */
443 * NOTE: we do not get status and verify reset was successful
444 * as some devices are reported to lock up upon this check..
447 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
449 /* toggle is reset on clear */
450 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
455 /**********************************************************************
456 * get_descriptor type
458 static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
459 unsigned char index, void *buf, int size)
462 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
463 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
464 (type << 8) + index, 0,
465 buf, size, USB_CNTL_TIMEOUT);
469 /**********************************************************************
470 * gets configuration cfgno and store it in the buffer
472 int usb_get_configuration_no(struct usb_device *dev,
473 unsigned char *buffer, int cfgno)
477 struct usb_config_descriptor *config;
479 config = (struct usb_config_descriptor *)&buffer[0];
480 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
483 printf("unable to get descriptor, error %lX\n",
486 printf("config descriptor too short " \
487 "(expected %i, got %i)\n", 9, result);
490 tmp = le16_to_cpu(config->wTotalLength);
492 if (tmp > USB_BUFSIZ) {
493 printf("usb_get_configuration_no: failed to get " \
494 "descriptor - too long: %d\n", tmp);
498 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
499 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, tmp);
503 /********************************************************************
504 * set address of a device to the value in dev->devnum.
505 * This can only be done by addressing the device via the default address (0)
507 static int usb_set_address(struct usb_device *dev)
511 debug("set address %d\n", dev->devnum);
512 res = usb_control_msg(dev, usb_snddefctrl(dev),
513 USB_REQ_SET_ADDRESS, 0,
515 NULL, 0, USB_CNTL_TIMEOUT);
519 /********************************************************************
520 * set interface number to interface
522 int usb_set_interface(struct usb_device *dev, int interface, int alternate)
524 struct usb_interface *if_face = NULL;
527 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
528 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
529 if_face = &dev->config.if_desc[i];
534 printf("selecting invalid interface %d", interface);
538 * We should return now for devices with only one alternate setting.
539 * According to 9.4.10 of the Universal Serial Bus Specification
540 * Revision 2.0 such devices can return with a STALL. This results in
541 * some USB sticks timeouting during initialization and then being
542 * unusable in U-Boot.
544 if (if_face->num_altsetting == 1)
547 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
548 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
549 alternate, interface, NULL, 0,
550 USB_CNTL_TIMEOUT * 5);
557 /********************************************************************
558 * set configuration number to configuration
560 static int usb_set_configuration(struct usb_device *dev, int configuration)
563 debug("set configuration %d\n", configuration);
564 /* set setup command */
565 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
566 USB_REQ_SET_CONFIGURATION, 0,
568 NULL, 0, USB_CNTL_TIMEOUT);
577 /********************************************************************
578 * set protocol to protocol
580 int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
582 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
583 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
584 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
587 /********************************************************************
590 int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
592 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
593 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
594 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
597 /********************************************************************
600 int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
601 unsigned char id, void *buf, int size)
603 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
605 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
606 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
609 /********************************************************************
610 * get class descriptor
612 int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
613 unsigned char type, unsigned char id, void *buf, int size)
615 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
616 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
617 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
620 /********************************************************************
621 * get string index in buffer
623 static int usb_get_string(struct usb_device *dev, unsigned short langid,
624 unsigned char index, void *buf, int size)
629 for (i = 0; i < 3; ++i) {
630 /* some devices are flaky */
631 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
632 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
633 (USB_DT_STRING << 8) + index, langid, buf, size,
644 static void usb_try_string_workarounds(unsigned char *buf, int *length)
646 int newlength, oldlength = *length;
648 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
649 if (!isprint(buf[newlength]) || buf[newlength + 1])
659 static int usb_string_sub(struct usb_device *dev, unsigned int langid,
660 unsigned int index, unsigned char *buf)
664 /* Try to read the string descriptor by asking for the maximum
665 * possible number of bytes */
666 rc = usb_get_string(dev, langid, index, buf, 255);
668 /* If that failed try to read the descriptor length, then
669 * ask for just that many bytes */
671 rc = usb_get_string(dev, langid, index, buf, 2);
673 rc = usb_get_string(dev, langid, index, buf, buf[0]);
677 if (!buf[0] && !buf[1])
678 usb_try_string_workarounds(buf, &rc);
680 /* There might be extra junk at the end of the descriptor */
684 rc = rc - (rc & 1); /* force a multiple of two */
694 /********************************************************************
696 * Get string index and translate it to ascii.
697 * returns string length (> 0) or error (< 0)
699 int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
701 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
706 if (size <= 0 || !buf || !index)
711 /* get langid for strings if it's not yet known */
712 if (!dev->have_langid) {
713 err = usb_string_sub(dev, 0, 0, tbuf);
715 debug("error getting string descriptor 0 " \
716 "(error=%lx)\n", dev->status);
718 } else if (tbuf[0] < 4) {
719 debug("string descriptor 0 too short\n");
722 dev->have_langid = -1;
723 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
724 /* always use the first langid listed */
725 debug("USB device number %d default " \
726 "language ID 0x%x\n",
727 dev->devnum, dev->string_langid);
731 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
735 size--; /* leave room for trailing NULL char in output buffer */
736 for (idx = 0, u = 2; u < err; u += 2) {
739 if (tbuf[u+1]) /* high byte */
740 buf[idx++] = '?'; /* non-ASCII character */
742 buf[idx++] = tbuf[u];
750 /********************************************************************
751 * USB device handling:
752 * the USB device are static allocated [USB_MAX_DEVICE].
756 /* returns a pointer to the device with the index [index].
757 * if the device is not assigned (dev->devnum==-1) returns NULL
759 struct usb_device *usb_get_dev_index(int index)
761 if (usb_dev[index].devnum == -1)
764 return &usb_dev[index];
767 /* returns a pointer of a new device structure or NULL, if
768 * no device struct is available
770 struct usb_device *usb_alloc_new_device(void *controller)
773 debug("New Device %d\n", dev_index);
774 if (dev_index == USB_MAX_DEVICE) {
775 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
778 /* default Address is 0, real addresses start with 1 */
779 usb_dev[dev_index].devnum = dev_index + 1;
780 usb_dev[dev_index].maxchild = 0;
781 for (i = 0; i < USB_MAXCHILDREN; i++)
782 usb_dev[dev_index].children[i] = NULL;
783 usb_dev[dev_index].parent = NULL;
784 usb_dev[dev_index].controller = controller;
786 return &usb_dev[dev_index - 1];
790 * Free the newly created device node.
791 * Called in error cases where configuring a newly attached
792 * device fails for some reason.
794 void usb_free_device(void)
797 debug("Freeing device node: %d\n", dev_index);
798 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
799 usb_dev[dev_index].devnum = -1;
803 * By the time we get here, the device has gotten a new device ID
804 * and is in the default state. We need to identify the thing and
805 * get the ball rolling..
807 * Returns 0 for success, != 0 for error.
809 int usb_new_device(struct usb_device *dev)
813 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
815 /* We still haven't set the Address yet */
819 #ifdef CONFIG_LEGACY_USB_INIT_SEQ
820 /* this is the old and known way of initializing devices, it is
821 * different than what Windows and Linux are doing. Windows and Linux
822 * both retrieve 64 bytes while reading the device descriptor
823 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
824 * invalid header while reading 8 bytes as device descriptor. */
825 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
826 dev->maxpacketsize = PACKET_SIZE_8;
827 dev->epmaxpacketin[0] = 8;
828 dev->epmaxpacketout[0] = 8;
830 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8);
832 printf("\n USB device not responding, " \
833 "giving up (status=%lX)\n", dev->status);
836 memcpy(&dev->descriptor, tmpbuf, 8);
838 /* This is a Windows scheme of initialization sequence, with double
839 * reset of the device (Linux uses the same sequence)
840 * Some equipment is said to work only with such init sequence; this
841 * patch is based on the work by Alan Stern:
842 * http://sourceforge.net/mailarchive/forum.php?
843 * thread_id=5729457&forum_id=5398
845 struct usb_device_descriptor *desc;
847 struct usb_device *parent = dev->parent;
848 unsigned short portstatus;
850 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
851 * only 18 bytes long, this will terminate with a short packet. But if
852 * the maxpacket size is 8 or 16 the device may be waiting to transmit
853 * some more, or keeps on retransmitting the 8 byte header. */
855 desc = (struct usb_device_descriptor *)tmpbuf;
856 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
857 /* Default to 64 byte max packet size */
858 dev->maxpacketsize = PACKET_SIZE_64;
859 dev->epmaxpacketin[0] = 64;
860 dev->epmaxpacketout[0] = 64;
862 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
864 debug("usb_new_device: usb_get_descriptor() failed\n");
868 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
870 * Fetch the device class, driver can use this info
871 * to differentiate between HUB and DEVICE.
873 dev->descriptor.bDeviceClass = desc->bDeviceClass;
875 /* find the port number we're at */
879 for (j = 0; j < parent->maxchild; j++) {
880 if (parent->children[j] == dev) {
886 printf("usb_new_device:cannot locate device's port.\n");
890 /* reset the port for the second time */
891 err = hub_port_reset(dev->parent, port, &portstatus);
893 printf("\n Couldn't reset port %i\n", port);
899 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
900 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
901 switch (dev->descriptor.bMaxPacketSize0) {
903 dev->maxpacketsize = PACKET_SIZE_8;
906 dev->maxpacketsize = PACKET_SIZE_16;
909 dev->maxpacketsize = PACKET_SIZE_32;
912 dev->maxpacketsize = PACKET_SIZE_64;
917 err = usb_set_address(dev); /* set address */
920 printf("\n USB device not accepting new address " \
921 "(error=%lX)\n", dev->status);
925 mdelay(10); /* Let the SET_ADDRESS settle */
927 tmp = sizeof(dev->descriptor);
929 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
930 tmpbuf, sizeof(dev->descriptor));
933 printf("unable to get device descriptor (error=%d)\n",
936 printf("USB device descriptor short read " \
937 "(expected %i, got %i)\n", tmp, err);
940 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
941 /* correct le values */
942 le16_to_cpus(&dev->descriptor.bcdUSB);
943 le16_to_cpus(&dev->descriptor.idVendor);
944 le16_to_cpus(&dev->descriptor.idProduct);
945 le16_to_cpus(&dev->descriptor.bcdDevice);
946 /* only support for one config for now */
947 err = usb_get_configuration_no(dev, tmpbuf, 0);
949 printf("usb_new_device: Cannot read configuration, " \
950 "skipping device %04x:%04x\n",
951 dev->descriptor.idVendor, dev->descriptor.idProduct);
954 usb_parse_config(dev, tmpbuf, 0);
955 usb_set_maxpacket(dev);
956 /* we set the default configuration here */
957 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
958 printf("failed to set default configuration " \
959 "len %d, status %lX\n", dev->act_len, dev->status);
962 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
963 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
964 dev->descriptor.iSerialNumber);
965 memset(dev->mf, 0, sizeof(dev->mf));
966 memset(dev->prod, 0, sizeof(dev->prod));
967 memset(dev->serial, 0, sizeof(dev->serial));
968 if (dev->descriptor.iManufacturer)
969 usb_string(dev, dev->descriptor.iManufacturer,
970 dev->mf, sizeof(dev->mf));
971 if (dev->descriptor.iProduct)
972 usb_string(dev, dev->descriptor.iProduct,
973 dev->prod, sizeof(dev->prod));
974 if (dev->descriptor.iSerialNumber)
975 usb_string(dev, dev->descriptor.iSerialNumber,
976 dev->serial, sizeof(dev->serial));
977 debug("Manufacturer %s\n", dev->mf);
978 debug("Product %s\n", dev->prod);
979 debug("SerialNumber %s\n", dev->serial);
980 /* now prode if the device is a hub */
981 usb_hub_probe(dev, 0);