示例#1
0
/*===========================================================================
METHOD:
   GobiNetDriverBind (Public Method)

DESCRIPTION:
   Setup in and out pipes

PARAMETERS
   pDev           [ I ] - Pointer to usbnet device
   pIntf          [ I ] - Pointer to interface

RETURN VALUE:
   int - 0 for success
         Negative errno for error
===========================================================================*/
static int GobiNetDriverBind( 
   struct usbnet *         pDev, 
   struct usb_interface *  pIntf )
{
   int numEndpoints;
   int endpointIndex;
   struct usb_host_endpoint * pEndpoint = NULL;
   struct usb_host_endpoint * pIn = NULL;
   struct usb_host_endpoint * pOut = NULL;
   
   // Verify one altsetting
   if (pIntf->num_altsetting != 1)
   {
      DBG( "invalid num_altsetting %u\n", pIntf->num_altsetting );
      return -ENODEV;
   }

   // Verify correct interface (0 or 5)
   //if ( (pIntf->cur_altsetting->desc.bInterfaceNumber != 0)
   //&&   (pIntf->cur_altsetting->desc.bInterfaceNumber != 5) )
   if( !( (1 << pIntf->cur_altsetting->desc.bInterfaceNumber) & (int)pDev->driver_info->data ) )
   {
      DBG( "invalid interface %d\n", 
           pIntf->cur_altsetting->desc.bInterfaceNumber );
      return -ENODEV;
   }
   
   // Collect In and Out endpoints
   numEndpoints = pIntf->cur_altsetting->desc.bNumEndpoints;
   for (endpointIndex = 0; endpointIndex < numEndpoints; endpointIndex++)
   {
      pEndpoint = pIntf->cur_altsetting->endpoint + endpointIndex;
      if (pEndpoint == NULL)
      {
         DBG( "invalid endpoint %u\n", endpointIndex );
         return -ENODEV;
      }
      
      if (usb_endpoint_dir_in( &pEndpoint->desc ) == true
      &&  usb_endpoint_xfer_int( &pEndpoint->desc ) == false)
      {
         pIn = pEndpoint;
      }
      else if (usb_endpoint_dir_out( &pEndpoint->desc ) == true)
      {
         pOut = pEndpoint;
      }
   }
   
   if (pIn == NULL || pOut == NULL)
   {
      DBG( "invalid endpoints\n" );
      return -ENODEV;
   }

   if (usb_set_interface( pDev->udev, 
                          pIntf->cur_altsetting->desc.bInterfaceNumber,
                          0 ) != 0)
   {
      DBG( "unable to set interface\n" );
      return -ENODEV;
   }

   pDev->in = usb_rcvbulkpipe( pDev->udev,
                   pIn->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK );
   pDev->out = usb_sndbulkpipe( pDev->udev,
                   pOut->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK );
                   
   DBG( "in %x, out %x\n", 
        pIn->desc.bEndpointAddress, 
        pOut->desc.bEndpointAddress );

   // In later versions of the kernel, usbnet helps with this
#if (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,23 ))
   pIntf->dev.platform_data = (void *)pDev;
#endif

   return 0;
}
static int acm_probe(struct usb_interface *intf,
		     const struct usb_device_id *id)
{
	struct usb_cdc_union_desc *union_header = NULL;
	struct usb_cdc_country_functional_desc *cfd = NULL;
	unsigned char *buffer = intf->altsetting->extra;
	int buflen = intf->altsetting->extralen;
	struct usb_interface *control_interface;
	struct usb_interface *data_interface;
	struct usb_endpoint_descriptor *epctrl = NULL;
	struct usb_endpoint_descriptor *epread = NULL;
	struct usb_endpoint_descriptor *epwrite = NULL;
	struct usb_device *usb_dev = interface_to_usbdev(intf);
	struct acm *acm;
	int minor;
	int ctrlsize, readsize;
	u8 *buf;
	u8 ac_management_function = 0;
	u8 call_management_function = 0;
	int call_interface_num = -1;
	int data_interface_num = -1;
	unsigned long quirks;
	int num_rx_buf;
	int i;
	int combined_interfaces = 0;

	/* normal quirks */
	quirks = (unsigned long)id->driver_info;
	num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;

	/* handle quirks deadly to normal probing*/
	if (quirks == NO_UNION_NORMAL) {
		data_interface = usb_ifnum_to_if(usb_dev, 1);
		control_interface = usb_ifnum_to_if(usb_dev, 0);
		goto skip_normal_probe;
	}

	/* normal probing*/
	if (!buffer) {
		dev_err(&intf->dev, "Weird descriptor references\n");
		return -EINVAL;
	}

	if (!buflen) {
		if (intf->cur_altsetting->endpoint &&
				intf->cur_altsetting->endpoint->extralen &&
				intf->cur_altsetting->endpoint->extra) {
			dev_dbg(&intf->dev,
				"Seeking extra descriptors on endpoint\n");
			buflen = intf->cur_altsetting->endpoint->extralen;
			buffer = intf->cur_altsetting->endpoint->extra;
		} else {
			dev_err(&intf->dev,
				"Zero length descriptor references\n");
			return -EINVAL;
		}
	}

	while (buflen > 0) {
		if (buffer[1] != USB_DT_CS_INTERFACE) {
			dev_err(&intf->dev, "skipping garbage\n");
			goto next_desc;
		}

		switch (buffer[2]) {
		case USB_CDC_UNION_TYPE: /* we've found it */
			if (union_header) {
				dev_err(&intf->dev, "More than one "
					"union descriptor, skipping ...\n");
				goto next_desc;
			}
			union_header = (struct usb_cdc_union_desc *)buffer;
			break;
		case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
			cfd = (struct usb_cdc_country_functional_desc *)buffer;
			break;
		case USB_CDC_HEADER_TYPE: /* maybe check version */
			break; /* for now we ignore it */
		case USB_CDC_ACM_TYPE:
			ac_management_function = buffer[3];
			break;
		case USB_CDC_CALL_MANAGEMENT_TYPE:
			call_management_function = buffer[3];
			call_interface_num = buffer[4];
			if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
				dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
			break;
		default:
			/* there are LOTS more CDC descriptors that
			 * could legitimately be found here.
			 */
			dev_dbg(&intf->dev, "Ignoring descriptor: "
					"type %02x, length %d\n",
					buffer[2], buffer[0]);
			break;
		}
next_desc:
		buflen -= buffer[0];
		buffer += buffer[0];
	}

	if (!union_header) {
		if (call_interface_num > 0) {
			dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
			/* quirks for Droids MuIn LCD */
			if (quirks & NO_DATA_INTERFACE)
				data_interface = usb_ifnum_to_if(usb_dev, 0);
			else
				data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
			control_interface = intf;
		} else {
			if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
				dev_dbg(&intf->dev,"No union descriptor, giving up\n");
				return -ENODEV;
			} else {
				dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
				combined_interfaces = 1;
				control_interface = data_interface = intf;
				goto look_for_collapsed_interface;
			}
		}
	} else {
		control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
		data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
		if (!control_interface || !data_interface) {
			dev_dbg(&intf->dev, "no interfaces\n");
			return -ENODEV;
		}
	}

	if (data_interface_num != call_interface_num)
		dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");

	if (control_interface == data_interface) {
		/* some broken devices designed for windows work this way */
		dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
		combined_interfaces = 1;
		/* a popular other OS doesn't use it */
		quirks |= NO_CAP_LINE;
		if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
			dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
			return -EINVAL;
		}
look_for_collapsed_interface:
		for (i = 0; i < 3; i++) {
			struct usb_endpoint_descriptor *ep;
			ep = &data_interface->cur_altsetting->endpoint[i].desc;

			if (usb_endpoint_is_int_in(ep))
				epctrl = ep;
			else if (usb_endpoint_is_bulk_out(ep))
				epwrite = ep;
			else if (usb_endpoint_is_bulk_in(ep))
				epread = ep;
			else
				return -EINVAL;
		}
		if (!epctrl || !epread || !epwrite)
			return -ENODEV;
		else
			goto made_compressed_probe;
	}

skip_normal_probe:

	/*workaround for switched interfaces */
	if (data_interface->cur_altsetting->desc.bInterfaceClass
						!= CDC_DATA_INTERFACE_TYPE) {
		if (control_interface->cur_altsetting->desc.bInterfaceClass
						== CDC_DATA_INTERFACE_TYPE) {
			struct usb_interface *t;
			dev_dbg(&intf->dev,
				"Your device has switched interfaces.\n");
			t = control_interface;
			control_interface = data_interface;
			data_interface = t;
		} else {
			return -EINVAL;
		}
	}

	/* Accept probe requests only for the control interface */
	if (!combined_interfaces && intf != control_interface)
		return -ENODEV;

	if (!combined_interfaces && usb_interface_claimed(data_interface)) {
		/* valid in this context */
		dev_dbg(&intf->dev, "The data interface isn't available\n");
		return -EBUSY;
	}


	if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
		return -EINVAL;

	epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
	epread = &data_interface->cur_altsetting->endpoint[0].desc;
	epwrite = &data_interface->cur_altsetting->endpoint[1].desc;


	/* workaround for switched endpoints */
	if (!usb_endpoint_dir_in(epread)) {
		/* descriptors are swapped */
		struct usb_endpoint_descriptor *t;
		dev_dbg(&intf->dev,
			"The data interface has switched endpoints\n");
		t = epread;
		epread = epwrite;
		epwrite = t;
	}
made_compressed_probe:
	dev_dbg(&intf->dev, "interfaces are valid\n");
	for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);

	if (minor == ACM_TTY_MINORS) {
		dev_err(&intf->dev, "no more free acm devices\n");
		return -ENODEV;
	}

	acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
	if (acm == NULL) {
		dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
		goto alloc_fail;
	}

	ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
	readsize = le16_to_cpu(epread->wMaxPacketSize) *
				(quirks == SINGLE_RX_URB ? 1 : 2);
	acm->combined_interfaces = combined_interfaces;
	acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
	acm->control = control_interface;
	acm->data = data_interface;
	acm->minor = minor;
	acm->dev = usb_dev;
	acm->ctrl_caps = ac_management_function;
	if (quirks & NO_CAP_LINE)
		acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
	acm->ctrlsize = ctrlsize;
	acm->readsize = readsize;
	acm->rx_buflimit = num_rx_buf;
	INIT_WORK(&acm->work, acm_softint);
	spin_lock_init(&acm->write_lock);
	spin_lock_init(&acm->read_lock);
	mutex_init(&acm->mutex);
	acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
	acm->is_int_ep = usb_endpoint_xfer_int(epread);
	if (acm->is_int_ep)
		acm->bInterval = epread->bInterval;
	tty_port_init(&acm->port);
	acm->port.ops = &acm_port_ops;

	buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
	if (!buf) {
		dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
		goto alloc_fail2;
	}
	acm->ctrl_buffer = buf;

	if (acm_write_buffers_alloc(acm) < 0) {
		dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
		goto alloc_fail4;
	}

	acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
	if (!acm->ctrlurb) {
		dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
		goto alloc_fail5;
	}
	for (i = 0; i < num_rx_buf; i++) {
		struct acm_rb *rb = &(acm->read_buffers[i]);
		struct urb *urb;

		rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
								&rb->dma);
		if (!rb->base) {
			dev_err(&intf->dev, "out of memory "
					"(read bufs usb_alloc_coherent)\n");
			goto alloc_fail6;
		}
		rb->index = i;
		rb->instance = acm;

		urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!urb) {
			dev_err(&intf->dev,
				"out of memory (read urbs usb_alloc_urb)\n");
			goto alloc_fail6;
		}
		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
		urb->transfer_dma = rb->dma;
		if (acm->is_int_ep) {
			usb_fill_int_urb(urb, acm->dev,
					 acm->rx_endpoint,
					 rb->base,
					 acm->readsize,
					 acm_read_bulk_callback, rb,
					 acm->bInterval);
		} else {
			usb_fill_bulk_urb(urb, acm->dev,
					  acm->rx_endpoint,
					  rb->base,
					  acm->readsize,
					  acm_read_bulk_callback, rb);
		}

		acm->read_urbs[i] = urb;
		__set_bit(i, &acm->read_urbs_free);
	}
	for (i = 0; i < ACM_NW; i++) {
		struct acm_wb *snd = &(acm->wb[i]);

		snd->urb = usb_alloc_urb(0, GFP_KERNEL);
		if (snd->urb == NULL) {
			dev_err(&intf->dev,
				"out of memory (write urbs usb_alloc_urb)\n");
			goto alloc_fail7;
		}

		if (usb_endpoint_xfer_int(epwrite))
			usb_fill_int_urb(snd->urb, usb_dev,
				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
				NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
		else
			usb_fill_bulk_urb(snd->urb, usb_dev,
				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
				NULL, acm->writesize, acm_write_bulk, snd);
		snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
		snd->instance = acm;
	}

	usb_set_intfdata(intf, acm);

	i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
	if (i < 0)
		goto alloc_fail7;

	if (cfd) { /* export the country data */
		acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
		if (!acm->country_codes)
			goto skip_countries;
		acm->country_code_size = cfd->bLength - 4;
		memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
							cfd->bLength - 4);
		acm->country_rel_date = cfd->iCountryCodeRelDate;

		i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
		if (i < 0) {
			kfree(acm->country_codes);
			acm->country_codes = NULL;
			acm->country_code_size = 0;
			goto skip_countries;
		}

		i = device_create_file(&intf->dev,
						&dev_attr_iCountryCodeRelDate);
		if (i < 0) {
			device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
			kfree(acm->country_codes);
			acm->country_codes = NULL;
			acm->country_code_size = 0;
			goto skip_countries;
		}
	}

skip_countries:
	usb_fill_int_urb(acm->ctrlurb, usb_dev,
			 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
			 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
			 /* works around buggy devices */
			 epctrl->bInterval ? epctrl->bInterval : 0xff);
	acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
	acm->ctrlurb->transfer_dma = acm->ctrl_dma;

	dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);

	acm_set_control(acm, acm->ctrlout);

	acm->line.dwDTERate = cpu_to_le32(9600);
	acm->line.bDataBits = 8;
	acm_set_line(acm, &acm->line);

	usb_driver_claim_interface(&acm_driver, data_interface, acm);
	usb_set_intfdata(data_interface, acm);

	usb_get_intf(control_interface);
	tty_register_device(acm_tty_driver, minor, &control_interface->dev);

	acm_table[minor] = acm;

	return 0;
alloc_fail7:
	for (i = 0; i < ACM_NW; i++)
		usb_free_urb(acm->wb[i].urb);
alloc_fail6:
	for (i = 0; i < num_rx_buf; i++)
		usb_free_urb(acm->read_urbs[i]);
	acm_read_buffers_free(acm);
	usb_free_urb(acm->ctrlurb);
alloc_fail5:
	acm_write_buffers_free(acm);
alloc_fail4:
	usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
alloc_fail2:
	kfree(acm);
alloc_fail:
	return -ENOMEM;
}
示例#3
0
static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
		int inum, int asnum, struct usb_host_endpoint *ep,
		unsigned char *buffer, int size)
{
	struct usb_ss_ep_comp_descriptor *desc;
	int max_tx;

	desc = (struct usb_ss_ep_comp_descriptor *) buffer;
	if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP ||
			size < USB_DT_SS_EP_COMP_SIZE) {
		dev_warn(ddev, "No SuperSpeed endpoint companion for config %d "
				" interface %d altsetting %d ep %d: "
				"using minimum values\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);

		ep->ss_ep_comp.bLength = USB_DT_SS_EP_COMP_SIZE;
		ep->ss_ep_comp.bDescriptorType = USB_DT_SS_ENDPOINT_COMP;
		if (usb_endpoint_xfer_isoc(&ep->desc) ||
				usb_endpoint_xfer_int(&ep->desc))
			ep->ss_ep_comp.wBytesPerInterval =
					ep->desc.wMaxPacketSize;
		return;
	}

	memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE);

	
	if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) {
		dev_warn(ddev, "Control endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bMaxBurst = 0;
	} else if (desc->bMaxBurst > 15) {
		dev_warn(ddev, "Endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 15\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bMaxBurst = 15;
	}

	if ((usb_endpoint_xfer_control(&ep->desc) ||
			usb_endpoint_xfer_int(&ep->desc)) &&
				desc->bmAttributes != 0) {
		dev_warn(ddev, "%s endpoint with bmAttributes = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n",
				usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk",
				desc->bmAttributes,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 0;
	} else if (usb_endpoint_xfer_bulk(&ep->desc) &&
			desc->bmAttributes > 16) {
		dev_warn(ddev, "Bulk endpoint with more than 65536 streams in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to max\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 16;
	} else if (usb_endpoint_xfer_isoc(&ep->desc) &&
			desc->bmAttributes > 2) {
		dev_warn(ddev, "Isoc endpoint has Mult of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 3\n", desc->bmAttributes + 1,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 2;
	}

	if (usb_endpoint_xfer_isoc(&ep->desc))
		max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
			usb_endpoint_maxp(&ep->desc);
	else if (usb_endpoint_xfer_int(&ep->desc))
		max_tx = usb_endpoint_maxp(&ep->desc) *
			(desc->bMaxBurst + 1);
	else
		max_tx = 999999;
	if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) {
		dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to %d\n",
				usb_endpoint_xfer_isoc(&ep->desc) ? "Isoc" : "Int",
				le16_to_cpu(desc->wBytesPerInterval),
				cfgno, inum, asnum, ep->desc.bEndpointAddress,
				max_tx);
		ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx);
	}
}
示例#4
0
/*===========================================================================
METHOD:
   GatherEndpoints (Public Method)

DESCRIPTION:
   Enumerate endpoints

PARAMETERS
   pIntf          [ I ] - Pointer to usb interface

RETURN VALUE:
   sEndpoints structure
              NULL for failure
===========================================================================*/
sEndpoints * GatherEndpoints( struct usb_interface * pIntf )
{
   int numEndpoints;
   int endpointIndex;
   sEndpoints * pOut;
   struct usb_host_endpoint * pEndpoint = NULL;
   
   pOut = kzalloc( sizeof( sEndpoints ), GFP_ATOMIC );
   if (pOut == NULL)
   {
      DBG( "unable to allocate memory\n" );
      return NULL;
   }

   pOut->mIntfNum = pIntf->cur_altsetting->desc.bInterfaceNumber;
   
   // Scan endpoints
   numEndpoints = pIntf->cur_altsetting->desc.bNumEndpoints;
   for (endpointIndex = 0; endpointIndex < numEndpoints; endpointIndex++)
   {
      pEndpoint = pIntf->cur_altsetting->endpoint + endpointIndex;
      if (pEndpoint == NULL)
      {
         DBG( "invalid endpoint %u\n", endpointIndex );
         kfree( pOut );
         return NULL;
      }
      
      if (usb_endpoint_dir_in( &pEndpoint->desc ) == true
      &&  usb_endpoint_xfer_int( &pEndpoint->desc ) == true)
      {
         pOut->mIntInEndp = pEndpoint->desc.bEndpointAddress;
      }
      else if (usb_endpoint_dir_in( &pEndpoint->desc ) == true
      &&  usb_endpoint_xfer_int( &pEndpoint->desc ) == false)
      {
         pOut->mBlkInEndp = pEndpoint->desc.bEndpointAddress;
      }
      else if (usb_endpoint_dir_in( &pEndpoint->desc ) == false
      &&  usb_endpoint_xfer_int( &pEndpoint->desc ) == false)
      {
         pOut->mBlkOutEndp = pEndpoint->desc.bEndpointAddress;
      }
   }

   if (pOut->mIntInEndp == 0
   ||  pOut->mBlkInEndp == 0
   ||  pOut->mBlkOutEndp == 0)
   {
      DBG( "One or more endpoints missing\n" );
      kfree( pOut );
      return NULL;
   }

   DBG( "intf %u\n", pOut->mIntfNum );
   DBG( "   int in  0x%02x\n", pOut->mIntInEndp );
   DBG( "   blk in  0x%02x\n", pOut->mBlkInEndp );
   DBG( "   blk out 0x%02x\n", pOut->mBlkOutEndp );

   return pOut;
}
示例#5
0
文件: g13.c 项目: vpeurala/g13driver
/* FIXME VP 27.12.2010: Really long method */
static int g13_probe(struct usb_interface *intf, const struct usb_device_id *id) {
    struct usb_device* device = interface_to_usbdev(intf);
    struct usb_host_interface* cur_altsetting = intf->cur_altsetting;
    struct usb_interface_descriptor desc = cur_altsetting->desc;
    int usb_register_dev_result; 
    int i;
    struct usb_host_endpoint endpoint;
    struct usb_endpoint_descriptor endpoint_descriptor;
    __u8 bEndpointAddress;
    __u8 bmAttributes;
    __u8 bInterval;
    struct urb* urb;
    unsigned int in_pipe;
    __le16 wMaxPacketSize;
    unsigned char* in_transfer_buffer;
    unsigned int in_transfer_buffer_length;
    int input_register_device_result;
    g13_input_device = input_allocate_device();
    if (g13_input_device == NULL) {
        printk("G13: input_allocate_device failed.\n");
        return -1;
    }
    g13_input_device->name = "G13";
    g13_input_device->evbit[0] = BIT_MASK(EV_KEY);
    REGISTER_BUTTON(1);
    REGISTER_BUTTON(2);
    REGISTER_BUTTON(3);
    REGISTER_BUTTON(4);
    REGISTER_BUTTON(5);
    REGISTER_BUTTON(6);
    REGISTER_BUTTON(7);
    REGISTER_BUTTON(8);
    REGISTER_BUTTON(9);
    REGISTER_BUTTON(10);
    REGISTER_BUTTON(11);
    REGISTER_BUTTON(12);
    REGISTER_BUTTON(13);
    REGISTER_BUTTON(14);
    REGISTER_BUTTON(15);
    REGISTER_BUTTON(16);
    REGISTER_BUTTON(17);
    REGISTER_BUTTON(18);
    REGISTER_BUTTON(19);
    REGISTER_BUTTON(20);
    REGISTER_BUTTON(21);
    REGISTER_BUTTON(22);
    input_register_device_result = input_register_device(g13_input_device);
    if (input_register_device_result) {
        printk("G13: input_register_device failed: %d\n", input_register_device_result);
        return input_register_device_result;
    }
    for (i = 0; i < desc.bNumEndpoints; i++) {
        endpoint = cur_altsetting->endpoint[i];
        endpoint_descriptor = endpoint.desc;
        bEndpointAddress = endpoint_descriptor.bEndpointAddress;
        bmAttributes = endpoint_descriptor.bmAttributes;
        if (usb_endpoint_dir_in(&endpoint_descriptor)) {
            /* We know that bmAttributes == USB_ENDPOINT_XFER_INT */
            if (usb_endpoint_xfer_int(&endpoint_descriptor)) {
                bInterval = endpoint_descriptor.bInterval;
                wMaxPacketSize = endpoint_descriptor.wMaxPacketSize;
                in_pipe = usb_rcvintpipe(device, bEndpointAddress);
                in_transfer_buffer = kzalloc((sizeof (unsigned char)) * wMaxPacketSize, GFP_ATOMIC);
                in_transfer_buffer_length = wMaxPacketSize; 
                urb = usb_alloc_urb(0, GFP_ATOMIC);
                usb_fill_int_urb(urb, device, in_pipe, in_transfer_buffer, in_transfer_buffer_length, &g13_urb_complete, NULL, bInterval);
                usb_submit_urb(urb, GFP_ATOMIC);
            }
        } else if (usb_endpoint_dir_out(&endpoint_descriptor)) {
            /* We know that bmAttributes == USB_ENDPOINT_XFER_INT */
            if (usb_endpoint_xfer_int(&endpoint_descriptor)) {
                bInterval = endpoint_descriptor.bInterval;
                /* TODO VP 27.12.2010: Implement output */
            }
        } else {
            printk("G13: Bug found! Endpoint not IN nor OUT.\n");
        } 
    }
    usb_register_dev_result = usb_register_dev(intf, &g13_class);
    if (usb_register_dev_result ) {
        printk("G13: usb_register_dev failed: %d\n", usb_register_dev_result);
        return usb_register_dev_result;
    }
    printk("G13: Device registration successful.\n");
    return 0;
}
示例#6
0
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	i = 0;		
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 9;	
			j = 16;
			break;
		default:		
			n = 32;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 9;		
			break;
		default:		
			n = 6;		
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (usb_endpoint_maxp(&endpoint->desc) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		unsigned maxp;

		maxp = usb_endpoint_maxp(&endpoint->desc) & 0x07ff;
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}

	
	if (to_usb_device(ddev)->speed == USB_SPEED_SUPER)
		usb_parse_ss_endpoint_companion(ddev, cfgno,
				inum, asnum, endpoint, buffer, size);

	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	retval = buffer - buffer0 + i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
示例#7
0
文件: config.c 项目: Anjali05/linux
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;
	unsigned int maxp;
	const unsigned short *maxpacket_maxes;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	/* Only store as many endpoints as we have room for */
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	/* Check for duplicate endpoint addresses */
	for (i = 0; i < ifp->desc.bNumEndpoints; ++i) {
		if (ifp->endpoint[i].desc.bEndpointAddress ==
		    d->bEndpointAddress) {
			dev_warn(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n",
			    cfgno, inum, asnum, d->bEndpointAddress);
			goto skip_to_next_endpoint_or_interface_descriptor;
		}
	}

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	/*
	 * Fix up bInterval values outside the legal range.
	 * Use 10 or 8 ms if no proper value can be guessed.
	 */
	i = 0;		/* i = min, j = max, n = default */
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER_PLUS:
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			/*
			 * Many device manufacturers are using full-speed
			 * bInterval values in high-speed interrupt endpoint
			 * descriptors. Try to fix those and fall back to an
			 * 8-ms default value otherwise.
			 */
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 7;	/* 8 ms = 2^(7-1) uframes */
			j = 16;

			/*
			 * Adjust bInterval for quirked devices.
			 */
			/*
			 * This quirk fixes bIntervals reported in ms.
			 */
			if (to_usb_device(ddev)->quirks &
				USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL) {
				n = clamp(fls(d->bInterval) + 3, i, j);
				i = j = n;
			}
			/*
			 * This quirk fixes bIntervals reported in
			 * linear microframes.
			 */
			if (to_usb_device(ddev)->quirks &
				USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL) {
				n = clamp(fls(d->bInterval), i, j);
				i = j = n;
			}
			break;
		default:		/* USB_SPEED_FULL or _LOW */
			/*
			 * For low-speed, 10 ms is the official minimum.
			 * But some "overclocked" devices might want faster
			 * polling so we'll allow it.
			 */
			n = 10;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 7;		/* 8 ms = 2^(7-1) uframes */
			break;
		default:		/* USB_SPEED_FULL */
			n = 4;		/* 8 ms = 2^(4-1) frames */
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	/* Some buggy low-speed devices have Bulk endpoints, which is
	 * explicitly forbidden by the USB spec.  In an attempt to make
	 * them usable, we will try treating them as Interrupt endpoints.
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (usb_endpoint_maxp(&endpoint->desc) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	/* Validate the wMaxPacketSize field */
	maxp = usb_endpoint_maxp(&endpoint->desc);

	/* Find the highest legal maxpacket size for this endpoint */
	i = 0;		/* additional transactions per microframe */
	switch (to_usb_device(ddev)->speed) {
	case USB_SPEED_LOW:
		maxpacket_maxes = low_speed_maxpacket_maxes;
		break;
	case USB_SPEED_FULL:
		maxpacket_maxes = full_speed_maxpacket_maxes;
		break;
	case USB_SPEED_HIGH:
		/* Bits 12..11 are allowed only for HS periodic endpoints */
		if (usb_endpoint_xfer_int(d) || usb_endpoint_xfer_isoc(d)) {
			i = maxp & (BIT(12) | BIT(11));
			maxp &= ~i;
		}
		/* fallthrough */
	default:
		maxpacket_maxes = high_speed_maxpacket_maxes;
		break;
	case USB_SPEED_SUPER:
	case USB_SPEED_SUPER_PLUS:
		maxpacket_maxes = super_speed_maxpacket_maxes;
		break;
	}
	j = maxpacket_maxes[usb_endpoint_type(&endpoint->desc)];

	if (maxp > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid maxpacket %d, setting to %d\n",
		    cfgno, inum, asnum, d->bEndpointAddress, maxp, j);
		maxp = j;
		endpoint->desc.wMaxPacketSize = cpu_to_le16(i | maxp);
	}

	/*
	 * Some buggy high speed devices have bulk endpoints using
	 * maxpacket sizes other than 512.  High speed HCDs may not
	 * be able to handle that particular bug, so let's warn...
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}

	/* Parse a possible SuperSpeed endpoint companion descriptor */
	if (to_usb_device(ddev)->speed >= USB_SPEED_SUPER)
		usb_parse_ss_endpoint_companion(ddev, cfgno,
				inum, asnum, endpoint, buffer, size);

	/* Skip over any Class Specific or Vendor Specific descriptors;
	 * find the next endpoint or interface descriptor */
	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	retval = buffer - buffer0 + i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
示例#8
0
文件: config.c 项目: Anjali05/linux
static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
		int inum, int asnum, struct usb_host_endpoint *ep,
		unsigned char *buffer, int size)
{
	struct usb_ss_ep_comp_descriptor *desc;
	int max_tx;

	/* The SuperSpeed endpoint companion descriptor is supposed to
	 * be the first thing immediately following the endpoint descriptor.
	 */
	desc = (struct usb_ss_ep_comp_descriptor *) buffer;

	if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP ||
			size < USB_DT_SS_EP_COMP_SIZE) {
		dev_warn(ddev, "No SuperSpeed endpoint companion for config %d "
				" interface %d altsetting %d ep %d: "
				"using minimum values\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);

		/* Fill in some default values.
		 * Leave bmAttributes as zero, which will mean no streams for
		 * bulk, and isoc won't support multiple bursts of packets.
		 * With bursts of only one packet, and a Mult of 1, the max
		 * amount of data moved per endpoint service interval is one
		 * packet.
		 */
		ep->ss_ep_comp.bLength = USB_DT_SS_EP_COMP_SIZE;
		ep->ss_ep_comp.bDescriptorType = USB_DT_SS_ENDPOINT_COMP;
		if (usb_endpoint_xfer_isoc(&ep->desc) ||
				usb_endpoint_xfer_int(&ep->desc))
			ep->ss_ep_comp.wBytesPerInterval =
					ep->desc.wMaxPacketSize;
		return;
	}
	buffer += desc->bLength;
	size -= desc->bLength;
	memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE);

	/* Check the various values */
	if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) {
		dev_warn(ddev, "Control endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bMaxBurst = 0;
	} else if (desc->bMaxBurst > 15) {
		dev_warn(ddev, "Endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 15\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bMaxBurst = 15;
	}

	if ((usb_endpoint_xfer_control(&ep->desc) ||
			usb_endpoint_xfer_int(&ep->desc)) &&
				desc->bmAttributes != 0) {
		dev_warn(ddev, "%s endpoint with bmAttributes = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n",
				usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk",
				desc->bmAttributes,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 0;
	} else if (usb_endpoint_xfer_bulk(&ep->desc) &&
			desc->bmAttributes > 16) {
		dev_warn(ddev, "Bulk endpoint with more than 65536 streams in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to max\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 16;
	} else if (usb_endpoint_xfer_isoc(&ep->desc) &&
		   !USB_SS_SSP_ISOC_COMP(desc->bmAttributes) &&
		   USB_SS_MULT(desc->bmAttributes) > 3) {
		dev_warn(ddev, "Isoc endpoint has Mult of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 3\n",
				USB_SS_MULT(desc->bmAttributes),
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		ep->ss_ep_comp.bmAttributes = 2;
	}

	if (usb_endpoint_xfer_isoc(&ep->desc))
		max_tx = (desc->bMaxBurst + 1) *
			(USB_SS_MULT(desc->bmAttributes)) *
			usb_endpoint_maxp(&ep->desc);
	else if (usb_endpoint_xfer_int(&ep->desc))
		max_tx = usb_endpoint_maxp(&ep->desc) *
			(desc->bMaxBurst + 1);
	else
		max_tx = 999999;
	if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) {
		dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to %d\n",
				usb_endpoint_xfer_isoc(&ep->desc) ? "Isoc" : "Int",
				le16_to_cpu(desc->wBytesPerInterval),
				cfgno, inum, asnum, ep->desc.bEndpointAddress,
				max_tx);
		ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx);
	}
	/* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
	if (usb_endpoint_xfer_isoc(&ep->desc) &&
	    USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
		usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
							ep, buffer, size);
}
int xhci_endpoint_init(struct xhci_hcd *xhci,
		struct xhci_virt_device *virt_dev,
		struct usb_device *udev,
		struct usb_host_endpoint *ep,
		gfp_t mem_flags)
{
	unsigned int ep_index;
	struct xhci_ep_ctx *ep_ctx;
	struct xhci_ring *ep_ring;
	unsigned int max_packet;
	unsigned int max_burst;
	u32 max_esit_payload;

	ep_index = xhci_get_endpoint_index(&ep->desc);
	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);

	/* Set up the endpoint ring */
	virt_dev->eps[ep_index].new_ring =
		xhci_ring_alloc(xhci, 1, true, mem_flags);
	if (!virt_dev->eps[ep_index].new_ring)
		return -ENOMEM;
	ep_ring = virt_dev->eps[ep_index].new_ring;
	ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state;

	ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep);
	ep_ctx->ep_info |= EP_MULT(xhci_get_endpoint_mult(udev, ep));

	/* FIXME dig Mult and streams info out of ep companion desc */

	/* Allow 3 retries for everything but isoc;
	 * error count = 0 means infinite retries.
	 */
	if (!usb_endpoint_xfer_isoc(&ep->desc))
		ep_ctx->ep_info2 = ERROR_COUNT(3);
	else
		ep_ctx->ep_info2 = ERROR_COUNT(1);

	ep_ctx->ep_info2 |= xhci_get_endpoint_type(udev, ep);

	/* Set the max packet size and max burst */
	switch (udev->speed) {
	case USB_SPEED_SUPER:
		max_packet = ep->desc.wMaxPacketSize;
		ep_ctx->ep_info2 |= MAX_PACKET(max_packet);
		/* dig out max burst from ep companion desc */
		if (!ep->ss_ep_comp) {
			xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n");
			max_packet = 0;
		} else {
			max_packet = ep->ss_ep_comp->desc.bMaxBurst;
		}
		ep_ctx->ep_info2 |= MAX_BURST(max_packet);
		break;
	case USB_SPEED_HIGH:
		/* bits 11:12 specify the number of additional transaction
		 * opportunities per microframe (USB 2.0, section 9.6.6)
		 */
		if (usb_endpoint_xfer_isoc(&ep->desc) ||
				usb_endpoint_xfer_int(&ep->desc)) {
			max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11;
			ep_ctx->ep_info2 |= MAX_BURST(max_burst);
		}
		/* Fall through */
	case USB_SPEED_FULL:
	case USB_SPEED_LOW:
		max_packet = ep->desc.wMaxPacketSize & 0x3ff;
		ep_ctx->ep_info2 |= MAX_PACKET(max_packet);
		break;
	default:
		BUG();
	}
示例#10
0
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	/* Only store as many endpoints as we have room for */
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	/* Fix up bInterval values outside the legal range. Use 32 ms if no
	 * proper value can be guessed. */
	i = 0;		/* i = min, j = max, n = default */
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			/* Many device manufacturers are using full-speed
			 * bInterval values in high-speed interrupt endpoint
			 * descriptors. Try to fix those and fall back to a
			 * 32 ms default value otherwise. */
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 9;	/* 32 ms = 2^(9-1) uframes */
			j = 16;
			break;
		default:		/* USB_SPEED_FULL or _LOW */
			/* For low-speed, 10 ms is the official minimum.
			 * But some "overclocked" devices might want faster
			 * polling so we'll allow it. */
			n = 32;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 9;		/* 32 ms = 2^(9-1) uframes */
			break;
		default:		/* USB_SPEED_FULL */
			n = 6;		/* 32 ms = 2^(6-1) frames */
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	/* Some buggy low-speed devices have Bulk endpoints, which is
	 * explicitly forbidden by the USB spec.  In an attempt to make
	 * them usable, we will try treating them as Interrupt endpoints.
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (le16_to_cpu(endpoint->desc.wMaxPacketSize) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	/*
	 * Some buggy high speed devices have bulk endpoints using
	 * maxpacket sizes other than 512.  High speed HCDs may not
	 * be able to handle that particular bug, so let's warn...
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		unsigned maxp;

		maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize) & 0x07ff;
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}

	/* Parse a possible SuperSpeed endpoint companion descriptor */
	if (to_usb_device(ddev)->speed == USB_SPEED_SUPER)
		usb_parse_ss_endpoint_companion(ddev, cfgno,
				inum, asnum, endpoint, buffer, size);

	/* Skip over any Class Specific or Vendor Specific descriptors;
	 * find the next endpoint or interface descriptor */
	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	retval = buffer - buffer0 + i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
示例#11
0
static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
		int inum, int asnum, struct usb_host_endpoint *ep,
		int num_ep, unsigned char *buffer, int size)
{
	unsigned char *buffer_start = buffer;
	struct usb_ss_ep_comp_descriptor	*desc;
	int retval;
	int num_skipped;
	int max_tx;
	int i;

	desc = (struct usb_ss_ep_comp_descriptor *) buffer;
	if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP) {
		dev_warn(ddev, "No SuperSpeed endpoint companion for config %d "
				" interface %d altsetting %d ep %d: "
				"using minimum values\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		/*
		 * The next descriptor is for an Endpoint or Interface,
		 * no extra descriptors to copy into the companion structure,
		 * and we didn't eat up any of the buffer.
		 */
		return 0;
	}
	memcpy(&ep->ss_ep_comp->desc, desc, USB_DT_SS_EP_COMP_SIZE);
	desc = &ep->ss_ep_comp->desc;
	buffer += desc->bLength;
	size -= desc->bLength;

	/* Eat up the other descriptors we don't care about */
	ep->ss_ep_comp->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &num_skipped);
	ep->ss_ep_comp->extralen = i;
	buffer += i;
	size -= i;
	retval = buffer - buffer_start;
	if (num_skipped > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
				num_skipped, plural(num_skipped),
				"SuperSpeed endpoint companion");

	/* Check the various values */
	if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) {
		dev_warn(ddev, "Control endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		desc->bMaxBurst = 0;
	}
	if (desc->bMaxBurst > 15) {
		dev_warn(ddev, "Endpoint with bMaxBurst = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 15\n", desc->bMaxBurst,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		desc->bMaxBurst = 15;
	}
	if ((usb_endpoint_xfer_control(&ep->desc) || usb_endpoint_xfer_int(&ep->desc))
			&& desc->bmAttributes != 0) {
		dev_warn(ddev, "%s endpoint with bmAttributes = %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to zero\n",
				usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk",
				desc->bmAttributes,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		desc->bmAttributes = 0;
	}
	if (usb_endpoint_xfer_bulk(&ep->desc) && desc->bmAttributes > 16) {
		dev_warn(ddev, "Bulk endpoint with more than 65536 streams in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to max\n",
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		desc->bmAttributes = 16;
	}
	if (usb_endpoint_xfer_isoc(&ep->desc) && desc->bmAttributes > 2) {
		dev_warn(ddev, "Isoc endpoint has Mult of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to 3\n", desc->bmAttributes + 1,
				cfgno, inum, asnum, ep->desc.bEndpointAddress);
		desc->bmAttributes = 2;
	}
	if (usb_endpoint_xfer_isoc(&ep->desc)) {
		max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
			le16_to_cpu(ep->desc.wMaxPacketSize);
	} else if (usb_endpoint_xfer_int(&ep->desc)) {
		max_tx = le16_to_cpu(ep->desc.wMaxPacketSize) *
			(desc->bMaxBurst + 1);
	} else {
		goto valid;
	}
	if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) {
		dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in "
				"config %d interface %d altsetting %d ep %d: "
				"setting to %d\n",
				usb_endpoint_xfer_isoc(&ep->desc) ? "Isoc" : "Int",
				le16_to_cpu(desc->wBytesPerInterval),
				cfgno, inum, asnum, ep->desc.bEndpointAddress,
				max_tx);
		desc->wBytesPerInterval = cpu_to_le16(max_tx);
	}
valid:
	return retval;
}
示例#12
0
/* This function probes an mwifiex device and registers it. It allocates
 * the card structure, initiates the device registration and initialization
 * procedure by adding a logical interface.
 */
static int mwifiex_usb_probe(struct usb_interface *intf,
			     const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct usb_host_interface *iface_desc = intf->cur_altsetting;
	struct usb_endpoint_descriptor *epd;
	int ret, i;
	struct usb_card_rec *card;
	u16 id_vendor, id_product, bcd_device;

	card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL);
	if (!card)
		return -ENOMEM;

	init_completion(&card->fw_done);

	id_vendor = le16_to_cpu(udev->descriptor.idVendor);
	id_product = le16_to_cpu(udev->descriptor.idProduct);
	bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
	pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
		 id_vendor, id_product, bcd_device);

	/* PID_1 is used for firmware downloading only */
	switch (id_product) {
	case USB8766_PID_1:
	case USB8797_PID_1:
	case USB8801_PID_1:
	case USB8997_PID_1:
		card->usb_boot_state = USB8XXX_FW_DNLD;
		break;
	case USB8766_PID_2:
	case USB8797_PID_2:
	case USB8801_PID_2:
	case USB8997_PID_2:
		card->usb_boot_state = USB8XXX_FW_READY;
		break;
	default:
		pr_warn("unknown id_product %#x\n", id_product);
		card->usb_boot_state = USB8XXX_FW_DNLD;
		break;
	}

	card->udev = udev;
	card->intf = intf;

	pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
		 le16_to_cpu(udev->descriptor.bcdUSB),
		 udev->descriptor.bDeviceClass,
		 udev->descriptor.bDeviceSubClass,
		 udev->descriptor.bDeviceProtocol);

	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
		epd = &iface_desc->endpoint[i].desc;
		if (usb_endpoint_dir_in(epd) &&
		    usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
		    (usb_endpoint_xfer_bulk(epd) ||
		     usb_endpoint_xfer_int(epd))) {
			card->rx_cmd_ep_type = usb_endpoint_type(epd);
			card->rx_cmd_interval = epd->bInterval;
			pr_debug("info: Rx CMD/EVT:: max pkt size: %d, addr: %d, ep_type: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress, card->rx_cmd_ep_type);
			card->rx_cmd_ep = usb_endpoint_num(epd);
			atomic_set(&card->rx_cmd_urb_pending, 0);
		}
		if (usb_endpoint_dir_in(epd) &&
		    usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
		    usb_endpoint_xfer_bulk(epd)) {
			pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress);
			card->rx_data_ep = usb_endpoint_num(epd);
			atomic_set(&card->rx_data_urb_pending, 0);
		}
		if (usb_endpoint_dir_out(epd) &&
		    usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
		    usb_endpoint_xfer_bulk(epd)) {
			pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress);
			card->port[0].tx_data_ep = usb_endpoint_num(epd);
			atomic_set(&card->port[0].tx_data_urb_pending, 0);
		}
		if (usb_endpoint_dir_out(epd) &&
		    usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 &&
		    usb_endpoint_xfer_bulk(epd)) {
			pr_debug("info: bulk OUT chan2:\t"
				 "max pkt size: %d, addr: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress);
			card->port[1].tx_data_ep = usb_endpoint_num(epd);
			atomic_set(&card->port[1].tx_data_urb_pending, 0);
		}
		if (usb_endpoint_dir_out(epd) &&
		    usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
		    (usb_endpoint_xfer_bulk(epd) ||
		     usb_endpoint_xfer_int(epd))) {
			card->tx_cmd_ep_type = usb_endpoint_type(epd);
			card->tx_cmd_interval = epd->bInterval;
			pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress);
			pr_debug("info: Tx CMD:: max pkt size: %d, addr: %d, ep_type: %d\n",
				 le16_to_cpu(epd->wMaxPacketSize),
				 epd->bEndpointAddress, card->tx_cmd_ep_type);
			card->tx_cmd_ep = usb_endpoint_num(epd);
			atomic_set(&card->tx_cmd_urb_pending, 0);
			card->bulk_out_maxpktsize =
					le16_to_cpu(epd->wMaxPacketSize);
		}
	}

	usb_set_intfdata(intf, card);

	ret = mwifiex_add_card(card, &card->fw_done, &usb_ops,
			       MWIFIEX_USB, &card->udev->dev);
	if (ret) {
		pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
		usb_reset_device(udev);
		return ret;
	}

	usb_get_dev(udev);

	return 0;
}
示例#13
0
static inline int usb_endpoint_is_int_out(const struct usb_endpoint_descriptor *epd)
{
       return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd));
}