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>
60 #define USB_BUFSIZ 512
62 static struct usb_device usb_dev[USB_MAX_DEVICE];
64 static int asynch_allowed;
66 char usb_started; /* flag for the started/stopped USB status */
68 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
69 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
72 /***************************************************************************
78 struct usb_device *dev;
79 int i, start_index = 0;
85 /* first make all devices unknown */
86 for (i = 0; i < USB_MAX_DEVICE; i++) {
87 memset(&usb_dev[i], 0, sizeof(struct usb_device));
88 usb_dev[i].devnum = -1;
91 /* init low_level USB */
92 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
93 /* init low_level USB */
95 if (usb_lowlevel_init(i, &ctrl)) {
96 puts("lowlevel init failed\n");
100 * lowlevel init is OK, now scan the bus for devices
101 * i.e. search HUBs and configure them
103 start_index = dev_index;
104 printf("scanning bus %d for devices... ", i);
105 dev = usb_alloc_new_device(ctrl);
107 * device 0 is always present
108 * (root hub, so let it analyze)
113 if (start_index == dev_index)
114 puts("No USB Device found\n");
116 printf("%d USB Device(s) found\n",
117 dev_index - start_index);
123 /* if we were not able to find at least one working bus, bail out */
125 puts("USB error: all controllers failed lowlevel init\n");
132 /******************************************************************************
133 * Stop USB this stops the LowLevel Part and deregisters USB devices.
144 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
145 if (usb_lowlevel_stop(i))
146 printf("failed to stop USB controller %d\n", i);
154 * disables the asynch behaviour of the control message. This is used for data
155 * transfers that uses the exclusiv access to the control and bulk messages.
156 * Returns the old value so it can be restored later.
158 int usb_disable_asynch(int disable)
160 int old_value = asynch_allowed;
162 asynch_allowed = !disable;
167 /*-------------------------------------------------------------------
173 * submits an Interrupt Message
175 int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
176 void *buffer, int transfer_len, int interval)
178 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
182 * submits a control message and waits for comletion (at least timeout * 1ms)
183 * If timeout is 0, we don't wait for completion (used as example to set and
184 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
185 * allow control messages with 0 timeout, by previousely resetting the flag
186 * asynch_allowed (usb_disable_asynch(1)).
187 * returns the transfered length if OK or -1 if error. The transfered length
188 * and the current status are stored in the dev->act_len and dev->status.
190 int usb_control_msg(struct usb_device *dev, unsigned int pipe,
191 unsigned char request, unsigned char requesttype,
192 unsigned short value, unsigned short index,
193 void *data, unsigned short size, int timeout)
195 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
197 if ((timeout == 0) && (!asynch_allowed)) {
198 /* request for a asynch control pipe is not allowed */
202 /* set setup command */
203 setup_packet->requesttype = requesttype;
204 setup_packet->request = request;
205 setup_packet->value = cpu_to_le16(value);
206 setup_packet->index = cpu_to_le16(index);
207 setup_packet->length = cpu_to_le16(size);
208 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
209 "value 0x%X index 0x%X length 0x%X\n",
210 request, requesttype, value, index, size);
211 dev->status = USB_ST_NOT_PROC; /*not yet processed */
213 if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
219 * Wait for status to update until timeout expires, USB driver
220 * interrupt handler may set the status when the USB operation has
224 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
235 /*-------------------------------------------------------------------
236 * submits bulk message, and waits for completion. returns 0 if Ok or
238 * synchronous behavior
240 int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
241 void *data, int len, int *actual_length, int timeout)
245 dev->status = USB_ST_NOT_PROC; /*not yet processed */
246 if (submit_bulk_msg(dev, pipe, data, len) < 0)
249 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
253 *actual_length = dev->act_len;
254 if (dev->status == 0)
261 /*-------------------------------------------------------------------
266 * returns the max packet size, depending on the pipe direction and
267 * the configurations values
269 int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
271 /* direction is out -> use emaxpacket out */
272 if ((pipe & USB_DIR_IN) == 0)
273 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
275 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
279 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
280 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
281 * when it is inlined in 1 single routine. What happens is that the register r3
282 * is used as loop-count 'i', but gets overwritten later on.
283 * This is clearly a compiler bug, but it is easier to workaround it here than
284 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
285 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
287 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
290 usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
293 struct usb_endpoint_descriptor *ep;
294 u16 ep_wMaxPacketSize;
296 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
298 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
299 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
301 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
302 USB_ENDPOINT_XFER_CONTROL) {
303 /* Control => bidirectional */
304 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
305 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
306 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
307 b, dev->epmaxpacketin[b]);
309 if ((ep->bEndpointAddress & 0x80) == 0) {
311 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
312 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
313 debug("##EP epmaxpacketout[%d] = %d\n",
314 b, dev->epmaxpacketout[b]);
318 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
319 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
320 debug("##EP epmaxpacketin[%d] = %d\n",
321 b, dev->epmaxpacketin[b]);
328 * set the max packed value of all endpoints in the given configuration
330 static int usb_set_maxpacket(struct usb_device *dev)
334 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
335 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
336 usb_set_maxpacket_ep(dev, i, ii);
341 /*******************************************************************************
342 * Parse the config, located in buffer, and fills the dev->config structure.
343 * Note that all little/big endian swapping are done automatically.
345 static int usb_parse_config(struct usb_device *dev,
346 unsigned char *buffer, int cfgno)
348 struct usb_descriptor_header *head;
349 int index, ifno, epno, curr_if_num;
350 u16 ep_wMaxPacketSize;
356 dev->configno = cfgno;
357 head = (struct usb_descriptor_header *) &buffer[0];
358 if (head->bDescriptorType != USB_DT_CONFIG) {
359 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
360 head->bDescriptorType);
363 memcpy(&dev->config, buffer, buffer[0]);
364 le16_to_cpus(&(dev->config.desc.wTotalLength));
365 dev->config.no_of_if = 0;
367 index = dev->config.desc.bLength;
368 /* Ok the first entry must be a configuration entry,
369 * now process the others */
370 head = (struct usb_descriptor_header *) &buffer[index];
371 while (index + 1 < dev->config.desc.wTotalLength) {
372 switch (head->bDescriptorType) {
373 case USB_DT_INTERFACE:
374 if (((struct usb_interface_descriptor *) \
375 &buffer[index])->bInterfaceNumber != curr_if_num) {
376 /* this is a new interface, copy new desc */
377 ifno = dev->config.no_of_if;
378 dev->config.no_of_if++;
379 memcpy(&dev->config.if_desc[ifno],
380 &buffer[index], buffer[index]);
381 dev->config.if_desc[ifno].no_of_ep = 0;
382 dev->config.if_desc[ifno].num_altsetting = 1;
384 dev->config.if_desc[ifno].desc.bInterfaceNumber;
386 /* found alternate setting for the interface */
387 dev->config.if_desc[ifno].num_altsetting++;
390 case USB_DT_ENDPOINT:
391 epno = dev->config.if_desc[ifno].no_of_ep;
392 /* found an endpoint */
393 dev->config.if_desc[ifno].no_of_ep++;
394 memcpy(&dev->config.if_desc[ifno].ep_desc[epno],
395 &buffer[index], buffer[index]);
396 ep_wMaxPacketSize = get_unaligned(&dev->config.\
400 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
405 debug("if %d, ep %d\n", ifno, epno);
408 if (head->bLength == 0)
411 debug("unknown Description Type : %x\n",
412 head->bDescriptorType);
416 unsigned char *ch = (unsigned char *)head;
419 for (i = 0; i < head->bLength; i++)
420 debug("%02X ", *ch++);
426 index += head->bLength;
427 head = (struct usb_descriptor_header *)&buffer[index];
432 /***********************************************************************
434 * endp: endpoint number in bits 0-3;
435 * direction flag in bit 7 (1 = IN, 0 = OUT)
437 int usb_clear_halt(struct usb_device *dev, int pipe)
440 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
442 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
443 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
444 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
446 /* don't clear if failed */
451 * NOTE: we do not get status and verify reset was successful
452 * as some devices are reported to lock up upon this check..
455 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
457 /* toggle is reset on clear */
458 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
463 /**********************************************************************
464 * get_descriptor type
466 static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
467 unsigned char index, void *buf, int size)
470 res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
471 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
472 (type << 8) + index, 0,
473 buf, size, USB_CNTL_TIMEOUT);
477 /**********************************************************************
478 * gets configuration cfgno and store it in the buffer
480 int usb_get_configuration_no(struct usb_device *dev,
481 unsigned char *buffer, int cfgno)
485 struct usb_config_descriptor *config;
487 config = (struct usb_config_descriptor *)&buffer[0];
488 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
491 printf("unable to get descriptor, error %lX\n",
494 printf("config descriptor too short " \
495 "(expected %i, got %i)\n", 9, result);
498 tmp = le16_to_cpu(config->wTotalLength);
500 if (tmp > USB_BUFSIZ) {
501 printf("usb_get_configuration_no: failed to get " \
502 "descriptor - too long: %d\n", tmp);
506 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
507 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, tmp);
511 /********************************************************************
512 * set address of a device to the value in dev->devnum.
513 * This can only be done by addressing the device via the default address (0)
515 static int usb_set_address(struct usb_device *dev)
519 debug("set address %d\n", dev->devnum);
520 res = usb_control_msg(dev, usb_snddefctrl(dev),
521 USB_REQ_SET_ADDRESS, 0,
523 NULL, 0, USB_CNTL_TIMEOUT);
527 /********************************************************************
528 * set interface number to interface
530 int usb_set_interface(struct usb_device *dev, int interface, int alternate)
532 struct usb_interface *if_face = NULL;
535 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
536 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
537 if_face = &dev->config.if_desc[i];
542 printf("selecting invalid interface %d", interface);
546 * We should return now for devices with only one alternate setting.
547 * According to 9.4.10 of the Universal Serial Bus Specification
548 * Revision 2.0 such devices can return with a STALL. This results in
549 * some USB sticks timeouting during initialization and then being
550 * unusable in U-Boot.
552 if (if_face->num_altsetting == 1)
555 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
556 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
557 alternate, interface, NULL, 0,
558 USB_CNTL_TIMEOUT * 5);
565 /********************************************************************
566 * set configuration number to configuration
568 static int usb_set_configuration(struct usb_device *dev, int configuration)
571 debug("set configuration %d\n", configuration);
572 /* set setup command */
573 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
574 USB_REQ_SET_CONFIGURATION, 0,
576 NULL, 0, USB_CNTL_TIMEOUT);
585 /********************************************************************
586 * set protocol to protocol
588 int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
590 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
591 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
592 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
595 /********************************************************************
598 int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
600 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
601 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
602 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
605 /********************************************************************
608 int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
609 unsigned char id, void *buf, int size)
611 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
613 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
614 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
617 /********************************************************************
618 * get class descriptor
620 int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
621 unsigned char type, unsigned char id, void *buf, int size)
623 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
624 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
625 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
628 /********************************************************************
629 * get string index in buffer
631 static int usb_get_string(struct usb_device *dev, unsigned short langid,
632 unsigned char index, void *buf, int size)
637 for (i = 0; i < 3; ++i) {
638 /* some devices are flaky */
639 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
640 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
641 (USB_DT_STRING << 8) + index, langid, buf, size,
652 static void usb_try_string_workarounds(unsigned char *buf, int *length)
654 int newlength, oldlength = *length;
656 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
657 if (!isprint(buf[newlength]) || buf[newlength + 1])
667 static int usb_string_sub(struct usb_device *dev, unsigned int langid,
668 unsigned int index, unsigned char *buf)
672 /* Try to read the string descriptor by asking for the maximum
673 * possible number of bytes */
674 rc = usb_get_string(dev, langid, index, buf, 255);
676 /* If that failed try to read the descriptor length, then
677 * ask for just that many bytes */
679 rc = usb_get_string(dev, langid, index, buf, 2);
681 rc = usb_get_string(dev, langid, index, buf, buf[0]);
685 if (!buf[0] && !buf[1])
686 usb_try_string_workarounds(buf, &rc);
688 /* There might be extra junk at the end of the descriptor */
692 rc = rc - (rc & 1); /* force a multiple of two */
702 /********************************************************************
704 * Get string index and translate it to ascii.
705 * returns string length (> 0) or error (< 0)
707 int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
709 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
714 if (size <= 0 || !buf || !index)
719 /* get langid for strings if it's not yet known */
720 if (!dev->have_langid) {
721 err = usb_string_sub(dev, 0, 0, tbuf);
723 debug("error getting string descriptor 0 " \
724 "(error=%lx)\n", dev->status);
726 } else if (tbuf[0] < 4) {
727 debug("string descriptor 0 too short\n");
730 dev->have_langid = -1;
731 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
732 /* always use the first langid listed */
733 debug("USB device number %d default " \
734 "language ID 0x%x\n",
735 dev->devnum, dev->string_langid);
739 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
743 size--; /* leave room for trailing NULL char in output buffer */
744 for (idx = 0, u = 2; u < err; u += 2) {
747 if (tbuf[u+1]) /* high byte */
748 buf[idx++] = '?'; /* non-ASCII character */
750 buf[idx++] = tbuf[u];
758 /********************************************************************
759 * USB device handling:
760 * the USB device are static allocated [USB_MAX_DEVICE].
764 /* returns a pointer to the device with the index [index].
765 * if the device is not assigned (dev->devnum==-1) returns NULL
767 struct usb_device *usb_get_dev_index(int index)
769 if (usb_dev[index].devnum == -1)
772 return &usb_dev[index];
775 /* returns a pointer of a new device structure or NULL, if
776 * no device struct is available
778 struct usb_device *usb_alloc_new_device(void *controller)
781 debug("New Device %d\n", dev_index);
782 if (dev_index == USB_MAX_DEVICE) {
783 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
786 /* default Address is 0, real addresses start with 1 */
787 usb_dev[dev_index].devnum = dev_index + 1;
788 usb_dev[dev_index].maxchild = 0;
789 for (i = 0; i < USB_MAXCHILDREN; i++)
790 usb_dev[dev_index].children[i] = NULL;
791 usb_dev[dev_index].parent = NULL;
792 usb_dev[dev_index].controller = controller;
794 return &usb_dev[dev_index - 1];
798 * Free the newly created device node.
799 * Called in error cases where configuring a newly attached
800 * device fails for some reason.
802 void usb_free_device(void)
805 debug("Freeing device node: %d\n", dev_index);
806 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
807 usb_dev[dev_index].devnum = -1;
811 * By the time we get here, the device has gotten a new device ID
812 * and is in the default state. We need to identify the thing and
813 * get the ball rolling..
815 * Returns 0 for success, != 0 for error.
817 int usb_new_device(struct usb_device *dev)
821 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
823 /* We still haven't set the Address yet */
827 #ifdef CONFIG_LEGACY_USB_INIT_SEQ
828 /* this is the old and known way of initializing devices, it is
829 * different than what Windows and Linux are doing. Windows and Linux
830 * both retrieve 64 bytes while reading the device descriptor
831 * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
832 * invalid header while reading 8 bytes as device descriptor. */
833 dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
834 dev->maxpacketsize = PACKET_SIZE_8;
835 dev->epmaxpacketin[0] = 8;
836 dev->epmaxpacketout[0] = 8;
838 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8);
840 printf("\n USB device not responding, " \
841 "giving up (status=%lX)\n", dev->status);
844 memcpy(&dev->descriptor, tmpbuf, 8);
846 /* This is a Windows scheme of initialization sequence, with double
847 * reset of the device (Linux uses the same sequence)
848 * Some equipment is said to work only with such init sequence; this
849 * patch is based on the work by Alan Stern:
850 * http://sourceforge.net/mailarchive/forum.php?
851 * thread_id=5729457&forum_id=5398
853 struct usb_device_descriptor *desc;
855 struct usb_device *parent = dev->parent;
856 unsigned short portstatus;
858 /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
859 * only 18 bytes long, this will terminate with a short packet. But if
860 * the maxpacket size is 8 or 16 the device may be waiting to transmit
861 * some more, or keeps on retransmitting the 8 byte header. */
863 desc = (struct usb_device_descriptor *)tmpbuf;
864 dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
865 /* Default to 64 byte max packet size */
866 dev->maxpacketsize = PACKET_SIZE_64;
867 dev->epmaxpacketin[0] = 64;
868 dev->epmaxpacketout[0] = 64;
870 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
872 debug("usb_new_device: usb_get_descriptor() failed\n");
876 dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
878 /* find the port number we're at */
882 for (j = 0; j < parent->maxchild; j++) {
883 if (parent->children[j] == dev) {
889 printf("usb_new_device:cannot locate device's port.\n");
893 /* reset the port for the second time */
894 err = hub_port_reset(dev->parent, port, &portstatus);
896 printf("\n Couldn't reset port %i\n", port);
902 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
903 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
904 switch (dev->descriptor.bMaxPacketSize0) {
906 dev->maxpacketsize = PACKET_SIZE_8;
909 dev->maxpacketsize = PACKET_SIZE_16;
912 dev->maxpacketsize = PACKET_SIZE_32;
915 dev->maxpacketsize = PACKET_SIZE_64;
920 err = usb_set_address(dev); /* set address */
923 printf("\n USB device not accepting new address " \
924 "(error=%lX)\n", dev->status);
928 mdelay(10); /* Let the SET_ADDRESS settle */
930 tmp = sizeof(dev->descriptor);
932 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
933 tmpbuf, sizeof(dev->descriptor));
936 printf("unable to get device descriptor (error=%d)\n",
939 printf("USB device descriptor short read " \
940 "(expected %i, got %i)\n", tmp, err);
943 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
944 /* correct le values */
945 le16_to_cpus(&dev->descriptor.bcdUSB);
946 le16_to_cpus(&dev->descriptor.idVendor);
947 le16_to_cpus(&dev->descriptor.idProduct);
948 le16_to_cpus(&dev->descriptor.bcdDevice);
949 /* only support for one config for now */
950 err = usb_get_configuration_no(dev, tmpbuf, 0);
952 printf("usb_new_device: Cannot read configuration, " \
953 "skipping device %04x:%04x\n",
954 dev->descriptor.idVendor, dev->descriptor.idProduct);
957 usb_parse_config(dev, tmpbuf, 0);
958 usb_set_maxpacket(dev);
959 /* we set the default configuration here */
960 if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
961 printf("failed to set default configuration " \
962 "len %d, status %lX\n", dev->act_len, dev->status);
965 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
966 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
967 dev->descriptor.iSerialNumber);
968 memset(dev->mf, 0, sizeof(dev->mf));
969 memset(dev->prod, 0, sizeof(dev->prod));
970 memset(dev->serial, 0, sizeof(dev->serial));
971 if (dev->descriptor.iManufacturer)
972 usb_string(dev, dev->descriptor.iManufacturer,
973 dev->mf, sizeof(dev->mf));
974 if (dev->descriptor.iProduct)
975 usb_string(dev, dev->descriptor.iProduct,
976 dev->prod, sizeof(dev->prod));
977 if (dev->descriptor.iSerialNumber)
978 usb_string(dev, dev->descriptor.iSerialNumber,
979 dev->serial, sizeof(dev->serial));
980 debug("Manufacturer %s\n", dev->mf);
981 debug("Product %s\n", dev->prod);
982 debug("SerialNumber %s\n", dev->serial);
983 /* now prode if the device is a hub */
984 usb_hub_probe(dev, 0);