示例#1
0
static int mts_usb_probe(struct usb_interface *intf,
			 const struct usb_device_id *id)
{
	int i;
	int ep_out = -1;
	int ep_in_set[3]; /* this will break if we have more than three endpoints
			   which is why we check */
	int *ep_in_current = ep_in_set;
	int err_retval = -ENOMEM;

	struct mts_desc * new_desc;
	struct vendor_product const* p;
	struct usb_device *dev = interface_to_usbdev (intf);

	/* the current altsetting on the interface we're probing */
	struct usb_host_interface *altsetting;

	MTS_DEBUG_GOT_HERE();
	MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );

	MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
		   le16_to_cpu(dev->descriptor.idProduct),
		   le16_to_cpu(dev->descriptor.idVendor) );

	MTS_DEBUG_GOT_HERE();

	p = &mts_supported_products[id - mts_usb_ids];

	MTS_DEBUG_GOT_HERE();

	MTS_DEBUG( "found model %s\n", p->name );
	if ( p->support_status != mts_sup_full )
		MTS_MESSAGE( "model %s is not known to be fully supported, reports welcome!\n",
			     p->name );

	/* the current altsetting on the interface we're probing */
	altsetting = intf->cur_altsetting;


	/* Check if the config is sane */

	if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
		MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
			     (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
		return -ENODEV;
	}

	for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
		if ((altsetting->endpoint[i].desc.bmAttributes &
		     USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {

			MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
			     (int)altsetting->endpoint[i].desc.bEndpointAddress );
		} else {
			if (altsetting->endpoint[i].desc.bEndpointAddress &
			    USB_DIR_IN)
				*ep_in_current++
					= altsetting->endpoint[i].desc.bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			else {
				if ( ep_out != -1 ) {
					MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
					return -ENODEV;
				}

				ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			}
		}

	}


	if ( ep_out == -1 ) {
		MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
		return -ENODEV;
	}


	new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
	if (!new_desc)
		goto out;

	new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!new_desc->urb)
		goto out_kfree;

	new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
	if (!new_desc->context.scsi_status)
		goto out_kfree2;

	new_desc->usb_dev = dev;
	new_desc->usb_intf = intf;
	init_MUTEX(&new_desc->lock);

	/* endpoints */
	new_desc->ep_out = ep_out;
	new_desc->ep_response = ep_in_set[0];
	new_desc->ep_image = ep_in_set[1];

	if ( new_desc->ep_out != MTS_EP_OUT )
		MTS_WARNING( "will this work? Command EP is not usually %d\n",
			     (int)new_desc->ep_out );

	if ( new_desc->ep_response != MTS_EP_RESPONSE )
		MTS_WARNING( "will this work? Response EP is not usually %d\n",
			     (int)new_desc->ep_response );

	if ( new_desc->ep_image != MTS_EP_IMAGE )
		MTS_WARNING( "will this work? Image data EP is not usually %d\n",
			     (int)new_desc->ep_image );

	new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
			sizeof(new_desc));
	if (!new_desc->host)
		goto out_free_urb;

	new_desc->host->hostdata[0] = (unsigned long)new_desc;
	if (scsi_add_host(new_desc->host, NULL)) {
		err_retval = -EIO;
		goto out_free_urb;
	}
	scsi_scan_host(new_desc->host);

	usb_set_intfdata(intf, new_desc);
	return 0;

 out_kfree2:
	kfree(new_desc->context.scsi_status);
 out_free_urb:
	usb_free_urb(new_desc->urb);
 out_kfree:
	kfree(new_desc);
 out:
	return err_retval;
}
示例#2
0
static void * mts_usb_probe (struct usb_device *dev, unsigned int interface,
			     const struct usb_device_id *id)
{
	int i;
	int result;
	int ep_out = -1;
	int ep_in_set[3]; /* this will break if we have more than three endpoints
			   which is why we check */
	int *ep_in_current = ep_in_set;

	struct mts_desc * new_desc;
	struct vendor_product const* p;

	/* the altsettting 0 on the interface we're probing */
	struct usb_interface_descriptor *altsetting;

	MTS_DEBUG_GOT_HERE();
	MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );

	MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
		   (int)dev->descriptor.idProduct,
		   (int)dev->descriptor.idVendor );

	MTS_DEBUG_GOT_HERE();

	p = &mts_supported_products[id - mts_usb_ids];

	MTS_DEBUG_GOT_HERE();

	MTS_DEBUG( "found model %s\n", p->name );
	if ( p->support_status != mts_sup_full )
		MTS_MESSAGE( "model %s is not known to be fully supported, reports welcome!\n",
			     p->name );

	/* the altsettting 0 on the interface we're probing */
	altsetting =
		&(dev->actconfig->interface[interface].altsetting[0]);


	/* Check if the config is sane */

	if ( altsetting->bNumEndpoints != MTS_EP_TOTAL ) {
		MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
			     (int)MTS_EP_TOTAL, (int)altsetting->bNumEndpoints );
		return NULL;
	}

	for( i = 0; i < altsetting->bNumEndpoints; i++ ) {
		if ((altsetting->endpoint[i].bmAttributes &
		     USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {

			MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
			     (int)altsetting->endpoint[i].bEndpointAddress );
		} else {
			if (altsetting->endpoint[i].bEndpointAddress &
			    USB_DIR_IN)
				*ep_in_current++
					= altsetting->endpoint[i].bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			else {
				if ( ep_out != -1 ) {
					MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
					return NULL;
				}

				ep_out = altsetting->endpoint[i].bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			}
		}

	}


	if ( ep_out == -1 ) {
		MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
		return NULL;
	}


	/* I don't understand the following fully (it's from usb-storage) -- John */

	/* set the interface -- STALL is an acceptable response here */
	result = usb_set_interface(dev, altsetting->bInterfaceNumber, 0);

	MTS_DEBUG("usb_set_interface returned %d.\n",result);
	switch( result )
	{
	case 0: /* no error */
		break;
		
	case -EPIPE:
		usb_clear_halt(dev, usb_sndctrlpipe(dev, 0));
		MTS_DEBUG( "clearing clearing stall on control interface\n" );
		break;
		
	default:
		MTS_DEBUG( "unknown error %d from usb_set_interface\n",
			(int)result );
 		return NULL;
	}
	
	
	/* allocating a new descriptor */
	new_desc = (struct mts_desc *)kmalloc(sizeof(struct mts_desc), GFP_KERNEL);
	if (new_desc == NULL)
	{
		MTS_ERROR("couldn't allocate scanner desc, bailing out!\n");
		return NULL;
	}

	/* As done by usb_alloc_urb */
	memset( new_desc, 0, sizeof(*new_desc) );
	spin_lock_init(&new_desc->urb.lock);
	
		
	/* initialising that descriptor */
	new_desc->usb_dev = dev;
	new_desc->interface = interface;

	init_MUTEX(&new_desc->lock);

	if(mts_list){
		new_desc->host_number = mts_list->host_number+1;
	} else {
		new_desc->host_number = 0;
	}
	
	/* endpoints */
	
	new_desc->ep_out = ep_out;
	new_desc->ep_response = ep_in_set[0];
	new_desc->ep_image = ep_in_set[1];


	if ( new_desc->ep_out != MTS_EP_OUT )
		MTS_WARNING( "will this work? Command EP is not usually %d\n",
			     (int)new_desc->ep_out );

	if ( new_desc->ep_response != MTS_EP_RESPONSE )
		MTS_WARNING( "will this work? Response EP is not usually %d\n",
			     (int)new_desc->ep_response );

	if ( new_desc->ep_image != MTS_EP_IMAGE )
		MTS_WARNING( "will this work? Image data EP is not usually %d\n",
			     (int)new_desc->ep_image );


	/* Initialize the host template based on the default one */
	memcpy(&(new_desc->ctempl), &mts_scsi_host_template, sizeof(mts_scsi_host_template));
	/* HACK from usb-storage - this is needed for scsi detection */
	(struct mts_desc *)new_desc->ctempl.proc_dir = new_desc; /* FIXME */

	MTS_DEBUG("registering SCSI module\n");

	new_desc->ctempl.module = THIS_MODULE;
	result = scsi_register_host(&new_desc->ctempl);
	/* Will get hit back in microtek_detect by this func */
	if ( result )
	{
		MTS_ERROR( "error %d from scsi_register_host! Help!\n",
			   (int)result );

		/* FIXME: need more cleanup? */
		kfree( new_desc );
		return NULL;
	}
	MTS_DEBUG_GOT_HERE();

	/* FIXME: the bomb is armed, must the host be registered under lock ? */
	/* join the list - lock it */
	down(&mts_list_semaphore);

	mts_add_nolock( new_desc );

	up(&mts_list_semaphore);


	MTS_DEBUG("completed probe and exiting happily\n");

	return (void *)new_desc;
}
static int mts_usb_probe(struct usb_interface *intf,
			 const struct usb_device_id *id)
{
	int i;
	int ep_out = -1;
	int ep_in_set[3]; 
	int *ep_in_current = ep_in_set;
	int err_retval = -ENOMEM;

	struct mts_desc * new_desc;
	struct usb_device *dev = interface_to_usbdev (intf);

	
	struct usb_host_interface *altsetting;

	MTS_DEBUG_GOT_HERE();
	MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );

	MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
		   le16_to_cpu(dev->descriptor.idProduct),
		   le16_to_cpu(dev->descriptor.idVendor) );

	MTS_DEBUG_GOT_HERE();

	
	altsetting = intf->cur_altsetting;


	

	if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
		MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
			     (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
		return -ENODEV;
	}

	for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
		if ((altsetting->endpoint[i].desc.bmAttributes &
		     USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {

			MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
			     (int)altsetting->endpoint[i].desc.bEndpointAddress );
		} else {
			if (altsetting->endpoint[i].desc.bEndpointAddress &
			    USB_DIR_IN)
				*ep_in_current++
					= altsetting->endpoint[i].desc.bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			else {
				if ( ep_out != -1 ) {
					MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
					return -ENODEV;
				}

				ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
					USB_ENDPOINT_NUMBER_MASK;
			}
		}

	}


	if ( ep_out == -1 ) {
		MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
		return -ENODEV;
	}


	new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
	if (!new_desc)
		goto out;

	new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!new_desc->urb)
		goto out_kfree;

	new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
	if (!new_desc->context.scsi_status)
		goto out_free_urb;

	new_desc->usb_dev = dev;
	new_desc->usb_intf = intf;

	
	new_desc->ep_out = ep_out;
	new_desc->ep_response = ep_in_set[0];
	new_desc->ep_image = ep_in_set[1];

	if ( new_desc->ep_out != MTS_EP_OUT )
		MTS_WARNING( "will this work? Command EP is not usually %d\n",
			     (int)new_desc->ep_out );

	if ( new_desc->ep_response != MTS_EP_RESPONSE )
		MTS_WARNING( "will this work? Response EP is not usually %d\n",
			     (int)new_desc->ep_response );

	if ( new_desc->ep_image != MTS_EP_IMAGE )
		MTS_WARNING( "will this work? Image data EP is not usually %d\n",
			     (int)new_desc->ep_image );

	new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
			sizeof(new_desc));
	if (!new_desc->host)
		goto out_kfree2;

	new_desc->host->hostdata[0] = (unsigned long)new_desc;
	if (scsi_add_host(new_desc->host, &dev->dev)) {
		err_retval = -EIO;
		goto out_host_put;
	}
	scsi_scan_host(new_desc->host);

	usb_set_intfdata(intf, new_desc);
	return 0;

 out_host_put:
	scsi_host_put(new_desc->host);
 out_kfree2:
	kfree(new_desc->context.scsi_status);
 out_free_urb:
	usb_free_urb(new_desc->urb);
 out_kfree:
	kfree(new_desc);
 out:
	return err_retval;
}