Initial revision
diff --git a/common/usb.c b/common/usb.c
new file mode 100644
index 0000000..a5b29a5
--- /dev/null
+++ b/common/usb.c
@@ -0,0 +1,1066 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * Most of this source has been derived from the Linux USB
+ * project.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+
+/*
+ * How it works:
+ *
+ * Since this is a bootloader, the devices will not be automatic
+ * (re)configured on hotplug, but after a restart of the USB the
+ * device should work.
+ *
+ * For each transfer (except "Interrupt") we wait for completion.
+ */
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_USB)
+
+#include <usb.h>
+#ifdef CONFIG_4xx
+#include <405gp_pci.h>
+#endif
+
+
+
+#undef USB_DEBUG
+
+#ifdef USB_DEBUG
+#define USB_PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define USB_PRINTF(fmt,args...)
+#endif
+
+static struct usb_device usb_dev[USB_MAX_DEVICE];
+static int dev_index;
+static int running;
+static int asynch_allowed;
+static struct devrequest setup_packet;
+
+/**********************************************************************
+ * some forward declerations...
+ */
+void usb_scan_devices(void);
+
+int usb_hub_probe(struct usb_device *dev, int ifnum);
+void usb_hub_reset(void);
+
+/***********************************************************************
+ * wait_ms
+ */
+
+void __inline__ wait_ms(unsigned long ms)
+{
+ while(ms-->0)
+ udelay(1000);
+}
+/***************************************************************************
+ * Init USB Device
+ */
+
+int usb_init(void)
+{
+ int result;
+
+ running=0;
+ dev_index=0;
+ asynch_allowed=1;
+ usb_hub_reset();
+ /* init low_level USB */
+ printf("USB: ");
+ result = usb_lowlevel_init();
+ /* if lowlevel init is OK, scan the bus for devices i.e. search HUBs and configure them */
+ if(result==0) {
+ printf("scanning bus for devices... ");
+ running=1;
+ usb_scan_devices();
+ return 0;
+ }
+ else {
+ printf("Error, couldn't init Lowlevel part\n");
+ return -1;
+ }
+}
+
+/******************************************************************************
+ * Stop USB this stops the LowLevel Part and deregisters USB devices.
+ */
+int usb_stop(void)
+{
+ asynch_allowed=1;
+ usb_hub_reset();
+ return usb_lowlevel_stop();
+}
+
+/*
+ * disables the asynch behaviour of the control message. This is used for data
+ * transfers that uses the exclusiv access to the control and bulk messages.
+ */
+void usb_disable_asynch(int disable)
+{
+ asynch_allowed=!disable;
+}
+
+
+/*-------------------------------------------------------------------
+ * Message wrappers.
+ *
+ */
+
+/*
+ * submits an Interrupt Message
+ */
+int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer,int transfer_len, int interval)
+{
+ return submit_int_msg(dev,pipe,buffer,transfer_len,interval);
+}
+
+/*
+ * submits a control message and waits for comletion (at least timeout * 1ms)
+ * If timeout is 0, we don't wait for completion (used as example to set and
+ * clear keyboards LEDs). For data transfers, (storage transfers) we don't
+ * allow control messages with 0 timeout, by previousely resetting the flag
+ * asynch_allowed (usb_disable_asynch(1)).
+ * returns the transfered length if OK or -1 if error. The transfered length
+ * and the current status are stored in the dev->act_len and dev->status.
+ */
+int usb_control_msg(struct usb_device *dev, unsigned int pipe,
+ unsigned char request, unsigned char requesttype,
+ unsigned short value, unsigned short index,
+ void *data, unsigned short size, int timeout)
+{
+ if((timeout==0)&&(!asynch_allowed)) /* request for a asynch control pipe is not allowed */
+ return -1;
+ /* set setup command */
+ setup_packet.requesttype = requesttype;
+ setup_packet.request = request;
+ setup_packet.value = swap_16(value);
+ setup_packet.index = swap_16(index);
+ setup_packet.length = swap_16(size);
+ USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X\nvalue 0x%X index 0x%X length 0x%X\n",
+ request,requesttype,value,index,size);
+ dev->status=USB_ST_NOT_PROC; /*not yet processed */
+
+ submit_control_msg(dev,pipe,data,size,&setup_packet);
+ if(timeout==0) {
+ return (int)size;
+ }
+ while(timeout--) {
+ if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
+ break;
+ wait_ms(1);
+ }
+ if(dev->status==0)
+ return dev->act_len;
+ else {
+ return -1;
+ }
+}
+
+/*-------------------------------------------------------------------
+ * submits bulk message, and waits for completion. returns 0 if Ok or
+ * -1 if Error.
+ * synchronous behavior
+ */
+int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
+ void *data, int len, int *actual_length, int timeout)
+{
+ if (len < 0)
+ return -1;
+ dev->status=USB_ST_NOT_PROC; /*not yet processed */
+ submit_bulk_msg(dev,pipe,data,len);
+ while(timeout--) {
+ if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
+ break;
+ wait_ms(1);
+ }
+ *actual_length=dev->act_len;
+ if(dev->status==0)
+ return 0;
+ else
+ return -1;
+}
+
+
+/*-------------------------------------------------------------------
+ * Max Packet stuff
+ */
+
+/*
+ * returns the max packet size, depending on the pipe direction and
+ * the configurations values
+ */
+int usb_maxpacket(struct usb_device *dev,unsigned long pipe)
+{
+ if((pipe & USB_DIR_IN)==0) /* direction is out -> use emaxpacket out */
+ return(dev->epmaxpacketout[((pipe>>15) & 0xf)]);
+ else
+ return(dev->epmaxpacketin[((pipe>>15) & 0xf)]);
+}
+
+/*
+ * set the max packed value of all endpoints in the given configuration
+ */
+int usb_set_maxpacket(struct usb_device *dev)
+{
+ int i,ii,b;
+ struct usb_endpoint_descriptor *ep;
+
+ for(i=0; i<dev->config.bNumInterfaces;i++) {
+ for(ii=0; ii<dev->config.if_desc[i].bNumEndpoints; ii++) {
+ ep=&dev->config.if_desc[i].ep_desc[ii];
+ b=ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+
+ if((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)==USB_ENDPOINT_XFER_CONTROL) { /* Control => bidirectional */
+ dev->epmaxpacketout[b] = ep->wMaxPacketSize;
+ dev->epmaxpacketin [b] = ep->wMaxPacketSize;
+ USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n",b,dev->epmaxpacketin[b]);
+ }
+ else {
+ if ((ep->bEndpointAddress & 0x80)==0) { /* OUT Endpoint */
+ if(ep->wMaxPacketSize > dev->epmaxpacketout[b]) {
+ dev->epmaxpacketout[b] = ep->wMaxPacketSize;
+ USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",b,dev->epmaxpacketout[b]);
+ }
+ }
+ else { /* IN Endpoint */
+ if(ep->wMaxPacketSize > dev->epmaxpacketin[b]) {
+ dev->epmaxpacketin[b] = ep->wMaxPacketSize;
+ USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",b,dev->epmaxpacketin[b]);
+ }
+ } /* if out */
+ } /* if control */
+ } /* for each endpoint */
+ }
+ return 0;
+}
+
+/*******************************************************************************
+ * Parse the config, located in buffer, and fills the dev->config structure.
+ * Note that all little/big endian swapping are done automatically.
+ */
+int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno)
+{
+ struct usb_descriptor_header *head;
+ int index,ifno,epno;
+ ifno=-1;
+ epno=-1;
+
+ dev->configno=cfgno;
+ head =(struct usb_descriptor_header *)&buffer[0];
+ if(head->bDescriptorType!=USB_DT_CONFIG) {
+ printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType);
+ return -1;
+ }
+ memcpy(&dev->config,buffer,buffer[0]);
+ dev->config.wTotalLength=swap_16(dev->config.wTotalLength);
+ dev->config.no_of_if=0;
+
+ index=dev->config.bLength;
+ /* Ok the first entry must be a configuration entry, now process the others */
+ head=(struct usb_descriptor_header *)&buffer[index];
+ while(index+1 < dev->config.wTotalLength) {
+ switch(head->bDescriptorType) {
+ case USB_DT_INTERFACE:
+ ifno=dev->config.no_of_if;
+ dev->config.no_of_if++; /* found an interface desc, increase numbers */
+ memcpy(&dev->config.if_desc[ifno],&buffer[index],buffer[index]); /* copy new desc */
+ dev->config.if_desc[ifno].no_of_ep=0;
+
+ break;
+ case USB_DT_ENDPOINT:
+ epno=dev->config.if_desc[ifno].no_of_ep;
+ dev->config.if_desc[ifno].no_of_ep++; /* found an endpoint */
+ memcpy(&dev->config.if_desc[ifno].ep_desc[epno],&buffer[index],buffer[index]);
+ dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize
+ =swap_16(dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize);
+ USB_PRINTF("if %d, ep %d\n",ifno,epno);
+ break;
+ default:
+ if(head->bLength==0)
+ return 1;
+ USB_PRINTF("unknown Description Type : %x\n",head->bDescriptorType);
+ {
+ int i;
+ unsigned char *ch;
+ ch=(unsigned char *)head;
+ for(i=0;i<head->bLength; i++)
+ USB_PRINTF("%02X ",*ch++);
+ USB_PRINTF("\n\n\n");
+ }
+ break;
+ }
+ index+=head->bLength;
+ head=(struct usb_descriptor_header *)&buffer[index];
+ }
+ return 1;
+}
+
+/***********************************************************************
+ * Clears an endpoint
+ * endp: endpoint number in bits 0-3;
+ * direction flag in bit 7 (1 = IN, 0 = OUT)
+ */
+int usb_clear_halt(struct usb_device *dev, int pipe)
+{
+ int result;
+ unsigned short status;
+ int endp=usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
+
+ result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
+
+ /* don't clear if failed */
+ if (result < 0)
+ return result;
+ result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_STATUS, USB_DIR_IN | USB_RECIP_ENDPOINT, 0, endp,
+ &status, sizeof(status), USB_CNTL_TIMEOUT * 3);
+ if (result < 0)
+ return result;
+ USB_PRINTF("usb_clear_halt: status 0x%x\n",status);
+ if (status & 1)
+ return -1; /* still halted */
+ usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+ /* toggle is reset on clear */
+ usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
+ return 0;
+}
+
+
+/**********************************************************************
+ * get_descriptor type
+ */
+int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size)
+{
+ int res;
+ res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
+ (type << 8) + index, 0,
+ buf, size, USB_CNTL_TIMEOUT);
+ return res;
+}
+
+/**********************************************************************
+ * gets configuration cfgno and store it in the buffer
+ */
+int usb_get_configuration_no(struct usb_device *dev,unsigned char *buffer,int cfgno)
+{
+ int result;
+ unsigned int tmp;
+ struct usb_config_descriptor *config;
+
+
+ config=(struct usb_config_descriptor *)&buffer[0];
+ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 8);
+ if (result < 8) {
+ if (result < 0)
+ printf("unable to get descriptor, error %lX\n",dev->status);
+ else
+ printf("config descriptor too short (expected %i, got %i)\n",8,result);
+ return -1;
+ }
+ tmp=swap_16(config->wTotalLength);
+
+ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
+ USB_PRINTF("get_conf_no %d Result %d, wLength %d\n",cfgno,result,tmp);
+ return result;
+}
+
+/********************************************************************
+ * set address of a device to the value in dev->devnum.
+ * This can only be done by addressing the device via the default address (0)
+ */
+int usb_set_address(struct usb_device *dev)
+{
+ int res;
+
+ USB_PRINTF("set address %d\n",dev->devnum);
+ res=usb_control_msg(dev, usb_snddefctrl(dev),
+ USB_REQ_SET_ADDRESS, 0,
+ (dev->devnum),0,
+ NULL,0, USB_CNTL_TIMEOUT);
+ return res;
+}
+
+/********************************************************************
+ * set interface number to interface
+ */
+int usb_set_interface(struct usb_device *dev, int interface, int alternate)
+{
+ struct usb_interface_descriptor *if_face = NULL;
+ int ret, i;
+
+ for (i=0; i<dev->config.bNumInterfaces; i++) {
+ if (dev->config.if_desc[i].bInterfaceNumber == interface) {
+ if_face = &dev->config.if_desc[i];
+ break;
+ }
+ }
+ if (!if_face) {
+ printf("selecting invalid interface %d", interface);
+ return -1;
+ }
+
+ if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, alternate,
+ interface, NULL, 0, USB_CNTL_TIMEOUT * 5)) < 0)
+ return ret;
+
+ if_face->act_altsetting = (unsigned char)alternate;
+ usb_set_maxpacket(dev);
+ return 0;
+}
+
+/********************************************************************
+ * set configuration number to configuration
+ */
+int usb_set_configuration(struct usb_device *dev, int configuration)
+{
+ int res;
+ USB_PRINTF("set configuration %d\n",configuration);
+ /* set setup command */
+ res=usb_control_msg(dev, usb_sndctrlpipe(dev,0),
+ USB_REQ_SET_CONFIGURATION, 0,
+ configuration,0,
+ NULL,0, USB_CNTL_TIMEOUT);
+ if(res==0) {
+ dev->toggle[0] = 0;
+ dev->toggle[1] = 0;
+ return 0;
+ }
+ else
+ return -1;
+}
+
+/********************************************************************
+ * set protocol to protocol
+ */
+int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
+{
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+/********************************************************************
+ * set idle
+ */
+int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
+{
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+/********************************************************************
+ * get report
+ */
+int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, unsigned char id, void *buf, int size)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_REPORT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
+}
+
+/********************************************************************
+ * get class descriptor
+ */
+int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
+ unsigned char type, unsigned char id, void *buf, int size)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
+ (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
+}
+
+/********************************************************************
+ * get string index in buffer
+ */
+int usb_get_string(struct usb_device *dev, unsigned short langid, unsigned char index, void *buf, int size)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
+ (USB_DT_STRING << 8) + index, langid, buf, size, USB_CNTL_TIMEOUT);
+}
+
+/********************************************************************
+ * usb_string:
+ * Get string index and translate it to ascii.
+ * returns string length (> 0) or error (< 0)
+ */
+int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
+{
+
+ unsigned char mybuf[256];
+ unsigned char *tbuf;
+ int err;
+ unsigned int u, idx;
+
+ if (size <= 0 || !buf || !index)
+ return -1;
+ buf[0] = 0;
+ tbuf=&mybuf[0];
+
+ /* get langid for strings if it's not yet known */
+ if (!dev->have_langid) {
+ err = usb_get_string(dev, 0, 0, tbuf, 4);
+ if (err < 0) {
+ USB_PRINTF("error getting string descriptor 0 (error=%x)\n",dev->status);
+ return -1;
+ } else if (tbuf[0] < 4) {
+ USB_PRINTF("string descriptor 0 too short\n");
+ return -1;
+ } else {
+ dev->have_langid = -1;
+ dev->string_langid = tbuf[2] | (tbuf[3]<< 8);
+ /* always use the first langid listed */
+ USB_PRINTF("USB device number %d default language ID 0x%x\n",
+ dev->devnum, dev->string_langid);
+ }
+ }
+ /* Just ask for a maximum length string and then take the length
+ * that was returned. */
+ err = usb_get_string(dev, dev->string_langid, index, tbuf, 4);
+ if (err < 0)
+ return err;
+ u=tbuf[0];
+ USB_PRINTF("Strn Len %d, index %d\n",u,index);
+ err = usb_get_string(dev, dev->string_langid, index, tbuf, u);
+ if (err < 0)
+ return err;
+ size--; /* leave room for trailing NULL char in output buffer */
+ for (idx = 0, u = 2; u < err; u += 2) {
+ if (idx >= size)
+ break;
+ if (tbuf[u+1]) /* high byte */
+ buf[idx++] = '?'; /* non-ASCII character */
+ else
+ buf[idx++] = tbuf[u];
+ }
+ buf[idx] = 0;
+ err = idx;
+ return err;
+}
+
+
+/********************************************************************
+ * USB device handling:
+ * the USB device are static allocated [USB_MAX_DEVICE].
+ */
+
+
+/* returns a pointer to the device with the index [index].
+ * if the device is not assigned (dev->devnum==-1) returns NULL
+ */
+struct usb_device * usb_get_dev_index(int index)
+{
+ if(usb_dev[index].devnum==-1)
+ return NULL;
+ else
+ return &usb_dev[index];
+}
+
+
+/* returns a pointer of a new device structure or NULL, if
+ * no device struct is available
+ */
+struct usb_device * usb_alloc_new_device(void)
+{
+ int i;
+ USB_PRINTF("New Device %d\n",dev_index);
+ if(dev_index==USB_MAX_DEVICE) {
+ printf("ERROR, to many USB Devices max=%d\n",USB_MAX_DEVICE);
+ return NULL;
+ }
+ usb_dev[dev_index].devnum=dev_index+1; /* default Address is 0, real addresses start with 1 */
+ usb_dev[dev_index].maxchild=0;
+ for(i=0;i<USB_MAXCHILDREN;i++)
+ usb_dev[dev_index].children[i]=NULL;
+ usb_dev[dev_index].parent=NULL;
+ dev_index++;
+ return &usb_dev[dev_index-1];
+}
+
+
+/*
+ * By the time we get here, the device has gotten a new device ID
+ * and is in the default state. We need to identify the thing and
+ * get the ball rolling..
+ *
+ * Returns 0 for success, != 0 for error.
+ */
+int usb_new_device(struct usb_device *dev)
+{
+ int addr, err;
+ int tmp;
+ unsigned char tmpbuf[256];
+
+ dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
+ dev->maxpacketsize = 0; /* Default to 8 byte max packet size */
+ dev->epmaxpacketin [0] = 8;
+ dev->epmaxpacketout[0] = 8;
+
+ /* We still haven't set the Address yet */
+ addr = dev->devnum;
+ dev->devnum = 0;
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8);
+ if (err < 8) {
+ printf("\n USB device not responding, giving up (status=%lX)\n",dev->status);
+ return 1;
+ }
+ dev->epmaxpacketin [0] = dev->descriptor.bMaxPacketSize0;
+ dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
+ switch (dev->descriptor.bMaxPacketSize0) {
+ case 8: dev->maxpacketsize = 0; break;
+ case 16: dev->maxpacketsize = 1; break;
+ case 32: dev->maxpacketsize = 2; break;
+ case 64: dev->maxpacketsize = 3; break;
+ }
+ dev->devnum = addr;
+
+ err = usb_set_address(dev); /* set address */
+
+ if (err < 0) {
+ printf("\n USB device not accepting new address (error=%lX)\n", dev->status);
+ return 1;
+ }
+
+ wait_ms(10); /* Let the SET_ADDRESS settle */
+
+ tmp = sizeof(dev->descriptor);
+
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, sizeof(dev->descriptor));
+ if (err < tmp) {
+ if (err < 0)
+ printf("unable to get device descriptor (error=%d)\n",err);
+ else
+ printf("USB device descriptor short read (expected %i, got %i)\n",tmp,err);
+ return 1;
+ }
+ /* correct le values */
+ dev->descriptor.bcdUSB=swap_16(dev->descriptor.bcdUSB);
+ dev->descriptor.idVendor=swap_16(dev->descriptor.idVendor);
+ dev->descriptor.idProduct=swap_16(dev->descriptor.idProduct);
+ dev->descriptor.bcdDevice=swap_16(dev->descriptor.bcdDevice);
+ /* only support for one config for now */
+ usb_get_configuration_no(dev,&tmpbuf[0],0);
+ usb_parse_config(dev,&tmpbuf[0],0);
+ usb_set_maxpacket(dev);
+ /* we set the default configuration here */
+ if (usb_set_configuration(dev, dev->config.bConfigurationValue)) {
+ printf("failed to set default configuration len %d, status %lX\n",dev->act_len,dev->status);
+ return -1;
+ }
+ USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
+ dev->descriptor.iManufacturer, dev->descriptor.iProduct, dev->descriptor.iSerialNumber);
+ memset(dev->mf, 0, sizeof(dev->mf));
+ memset(dev->prod, 0, sizeof(dev->prod));
+ memset(dev->serial, 0, sizeof(dev->serial));
+ if (dev->descriptor.iManufacturer)
+ usb_string(dev, dev->descriptor.iManufacturer, dev->mf, sizeof(dev->mf));
+ if (dev->descriptor.iProduct)
+ usb_string(dev, dev->descriptor.iProduct, dev->prod, sizeof(dev->prod));
+ if (dev->descriptor.iSerialNumber)
+ usb_string(dev, dev->descriptor.iSerialNumber, dev->serial, sizeof(dev->serial));
+ USB_PRINTF("Manufacturer %s\n", dev->mf);
+ USB_PRINTF("Product %s\n", dev->prod);
+ USB_PRINTF("SerialNumber %s\n", dev->serial);
+ /* now prode if the device is a hub */
+ usb_hub_probe(dev,0);
+ return 0;
+}
+
+/* build device Tree */
+void usb_scan_devices(void)
+{
+ int i;
+ struct usb_device *dev;
+
+ /* first make all devices unknown */
+ for(i=0;i<USB_MAX_DEVICE;i++) {
+ memset(&usb_dev[i],0,sizeof(struct usb_device));
+ usb_dev[i].devnum=-1;
+ }
+ dev_index=0;
+ /* device 0 is always present (root hub, so let it analyze) */
+ dev=usb_alloc_new_device();
+ usb_new_device(dev);
+ printf("%d USB Devices found\n",dev_index);
+ /* insert "driver" if possible */
+#ifdef CONFIG_USB_KEYBOARD
+ drv_usb_kbd_init();
+ USB_PRINTF("scan end\n");
+#endif
+}
+
+
+/****************************************************************************
+ * HUB "Driver"
+ * Probes device for being a hub and configurate it
+ */
+
+#undef USB_HUB_DEBUG
+
+#ifdef USB_HUB_DEBUG
+#define USB_HUB_PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define USB_HUB_PRINTF(fmt,args...)
+#endif
+
+
+static struct usb_hub_device hub_dev[USB_MAX_HUB];
+static int usb_hub_index;
+
+
+int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
+ USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT);
+}
+
+int usb_clear_hub_feature(struct usb_device *dev, int feature)
+{
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
+{
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_set_port_feature(struct usb_device *dev, int port, int feature)
+{
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_get_hub_status(struct usb_device *dev, void *data)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0,
+ data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+}
+
+int usb_get_port_status(struct usb_device *dev, int port, void *data)
+{
+ return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
+ data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+}
+
+
+static void usb_hub_power_on(struct usb_hub_device *hub)
+{
+ int i;
+ struct usb_device *dev;
+
+ dev=hub->pusb_dev;
+ /* Enable power to the ports */
+ USB_HUB_PRINTF("enabling power on all ports\n");
+ for (i = 0; i < dev->maxchild; i++) {
+ usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
+ USB_HUB_PRINTF("port %d returns %lX\n",i+1,dev->status);
+ wait_ms(hub->desc.bPwrOn2PwrGood * 2);
+ }
+}
+
+void usb_hub_reset(void)
+{
+ usb_hub_index=0;
+}
+
+struct usb_hub_device *usb_hub_allocate(void)
+{
+ if(usb_hub_index<USB_MAX_HUB) {
+ return &hub_dev[usb_hub_index++];
+ }
+ printf("ERROR: USB_MAX_HUB (%d) reached\n",USB_MAX_HUB);
+ return NULL;
+}
+
+#define MAX_TRIES 5
+
+void usb_hub_port_connect_change(struct usb_device *dev, int port)
+{
+ struct usb_device *usb;
+ struct usb_port_status portsts;
+ unsigned short portstatus, portchange;
+ int tries;
+
+ /* Check status */
+ if (usb_get_port_status(dev, port + 1, &portsts)<0) {
+ USB_HUB_PRINTF("get_port_status failed\n");
+ return;
+ }
+
+ portstatus = swap_16(portsts.wPortStatus);
+ portchange = swap_16(portsts.wPortChange);
+ USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus, portchange,
+ portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed");
+
+ /* Clear the connection change status */
+ usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
+
+ /* Disconnect any existing devices under this port */
+ if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
+ (!(portstatus & USB_PORT_STAT_ENABLE)))|| (dev->children[port])) {
+ USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n");
+ /* Return now if nothing is connected */
+ if (!(portstatus & USB_PORT_STAT_CONNECTION))
+ return;
+ }
+ wait_ms(200);
+
+ /* Reset the port */
+
+ for(tries=0;tries<MAX_TRIES;tries++) {
+
+ usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
+ wait_ms(200);
+
+ if (usb_get_port_status(dev, port + 1, &portsts)<0) {
+ USB_HUB_PRINTF("get_port_status failed status %lX\n",dev->status);
+ return;
+ }
+ portstatus = swap_16(portsts.wPortStatus);
+ portchange = swap_16(portsts.wPortChange);
+ USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus ,portchange,
+ portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed");
+ USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d USB_PORT_STAT_ENABLE %d\n",
+ (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
+ (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
+ (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
+ if ((portchange & USB_PORT_STAT_C_CONNECTION) ||
+ !(portstatus & USB_PORT_STAT_CONNECTION))
+ return;
+
+ if (portstatus & USB_PORT_STAT_ENABLE)
+ break;
+
+ wait_ms(200);
+ }
+
+ if (tries==MAX_TRIES) {
+ USB_HUB_PRINTF("Cannot enable port %i after %i retries, disabling port.\n", port+1, MAX_TRIES);
+ USB_HUB_PRINTF("Maybe the USB cable is bad?\n");
+ return;
+ }
+
+ usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
+ wait_ms(200);
+
+ /* Allocate a new device struct for it */
+ usb=usb_alloc_new_device();
+ usb->slow = (portstatus & USB_PORT_STAT_LOW_SPEED) ? 1 : 0;
+
+ dev->children[port] = usb;
+ usb->parent=dev;
+ /* Run it through the hoops (find a driver, etc) */
+ if (usb_new_device(usb)) {
+ /* Woops, disable the port */
+ USB_HUB_PRINTF("hub: disabling port %d\n", port + 1);
+ usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
+ }
+}
+
+
+int usb_hub_configure(struct usb_device *dev)
+{
+ unsigned char buffer[256], *bitmap;
+ struct usb_hub_descriptor *descriptor;
+ struct usb_hub_status *hubsts;
+ int i;
+ struct usb_hub_device *hub;
+
+ /* "allocate" Hub device */
+ hub=usb_hub_allocate();
+ if(hub==NULL)
+ return -1;
+ hub->pusb_dev=dev;
+ /* Get the the hub descriptor */
+ if (usb_get_hub_descriptor(dev, buffer, 4) < 0) {
+ USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor, giving up %lX\n",dev->status);
+ return -1;
+ }
+ descriptor = (struct usb_hub_descriptor *)buffer;
+ if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) {
+ USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor 2nd giving up %lX\n",dev->status);
+ return -1;
+ }
+ memcpy((unsigned char *)&hub->desc,buffer,descriptor->bLength);
+ /* adjust 16bit values */
+ hub->desc.wHubCharacteristics=swap_16(descriptor->wHubCharacteristics);
+ /* set the bitmap */
+ bitmap=(unsigned char *)&hub->desc.DeviceRemovable[0];
+ memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* devices not removable by default */
+ bitmap=(unsigned char *)&hub->desc.PortPowerCtrlMask[0];
+ memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */
+ for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) {
+ hub->desc.DeviceRemovable[i]=descriptor->DeviceRemovable[i];
+ }
+ for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) {
+ hub->desc.DeviceRemovable[i]=descriptor->PortPowerCtrlMask[i];
+ }
+ dev->maxchild = descriptor->bNbrPorts;
+ USB_HUB_PRINTF("%d ports detected\n", dev->maxchild);
+
+ switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) {
+ case 0x00:
+ USB_HUB_PRINTF("ganged power switching\n");
+ break;
+ case 0x01:
+ USB_HUB_PRINTF("individual port power switching\n");
+ break;
+ case 0x02:
+ case 0x03:
+ USB_HUB_PRINTF("unknown reserved power switching mode\n");
+ break;
+ }
+
+ if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND)
+ USB_HUB_PRINTF("part of a compound device\n");
+ else
+ USB_HUB_PRINTF("standalone hub\n");
+
+ switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) {
+ case 0x00:
+ USB_HUB_PRINTF("global over-current protection\n");
+ break;
+ case 0x08:
+ USB_HUB_PRINTF("individual port over-current protection\n");
+ break;
+ case 0x10:
+ case 0x18:
+ USB_HUB_PRINTF("no over-current protection\n");
+ break;
+ }
+ USB_HUB_PRINTF("power on to power good time: %dms\n", descriptor->bPwrOn2PwrGood * 2);
+ USB_HUB_PRINTF("hub controller current requirement: %dmA\n", descriptor->bHubContrCurrent);
+ for (i = 0; i < dev->maxchild; i++)
+ USB_HUB_PRINTF("port %d is%s removable\n", i + 1,
+ hub->desc.DeviceRemovable[(i + 1)/8] & (1 << ((i + 1)%8)) ? " not" : "");
+ if (usb_get_hub_status(dev, buffer) < 0) {
+ USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n",dev->status);
+ return -1;
+ }
+ hubsts = (struct usb_hub_status *)buffer;
+ USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n",
+ swap_16(hubsts->wHubStatus),swap_16(hubsts->wHubChange));
+ USB_HUB_PRINTF("local power source is %s\n",
+ (swap_16(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? "lost (inactive)" : "good");
+ USB_HUB_PRINTF("%sover-current condition exists\n",
+ (swap_16(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? "" : "no ");
+ usb_hub_power_on(hub);
+ for (i = 0; i < dev->maxchild; i++) {
+ struct usb_port_status portsts;
+ unsigned short portstatus, portchange;
+
+ if (usb_get_port_status(dev, i + 1, &portsts) < 0) {
+ USB_HUB_PRINTF("get_port_status failed\n");
+ continue;
+ }
+ portstatus = swap_16(portsts.wPortStatus);
+ portchange = swap_16(portsts.wPortChange);
+ USB_HUB_PRINTF("Port %d Status %X Change %X\n",i+1,portstatus,portchange);
+ if (portchange & USB_PORT_STAT_C_CONNECTION) {
+ USB_HUB_PRINTF("port %d connection change\n", i + 1);
+ usb_hub_port_connect_change(dev, i);
+ }
+ if (portchange & USB_PORT_STAT_C_ENABLE) {
+ USB_HUB_PRINTF("port %d enable change, status %x\n", i + 1, portstatus);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
+
+ /* EM interference sometimes causes bad shielded USB devices to
+ * be shutdown by the hub, this hack enables them again.
+ * Works at least with mouse driver */
+ if (!(portstatus & USB_PORT_STAT_ENABLE) &&
+ (portstatus & USB_PORT_STAT_CONNECTION) && (dev->children[i])) {
+ USB_HUB_PRINTF("already running port %i disabled by hub (EMI?), re-enabling...\n",
+ i + 1);
+ usb_hub_port_connect_change(dev, i);
+ }
+ }
+ if (portstatus & USB_PORT_STAT_SUSPEND) {
+ USB_HUB_PRINTF("port %d suspend change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND);
+ }
+
+ if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
+ USB_HUB_PRINTF("port %d over-current change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_OVER_CURRENT);
+ usb_hub_power_on(hub);
+ }
+
+ if (portchange & USB_PORT_STAT_C_RESET) {
+ USB_HUB_PRINTF("port %d reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+ }
+ } /* end for i all ports */
+
+ return 0;
+}
+
+int usb_hub_probe(struct usb_device *dev, int ifnum)
+{
+ struct usb_interface_descriptor *iface;
+ struct usb_endpoint_descriptor *ep;
+ int ret;
+
+ iface = &dev->config.if_desc[ifnum];
+ /* Is it a hub? */
+ if (iface->bInterfaceClass != USB_CLASS_HUB)
+ return 0;
+ /* Some hubs have a subclass of 1, which AFAICT according to the */
+ /* specs is not defined, but it works */
+ if ((iface->bInterfaceSubClass != 0) &&
+ (iface->bInterfaceSubClass != 1))
+ return 0;
+ /* Multiple endpoints? What kind of mutant ninja-hub is this? */
+ if (iface->bNumEndpoints != 1)
+ return 0;
+ ep = &iface->ep_desc[0];
+ /* Output endpoint? Curiousier and curiousier.. */
+ if (!(ep->bEndpointAddress & USB_DIR_IN))
+ return 0;
+ /* If it's not an interrupt endpoint, we'd better punt! */
+ if ((ep->bmAttributes & 3) != 3)
+ return 0;
+ /* We found a hub */
+ USB_HUB_PRINTF("USB hub found\n");
+ ret=usb_hub_configure(dev);
+ return ret;
+}
+
+#endif /* (CONFIG_COMMANDS & CFG_CMD_USB) */
+
+/* EOF */