udev = to_usb_device(dev);
-#ifdef CONFIG_USB_SUSPEND
- cancel_delayed_work(&udev->autosuspend);
- flush_workqueue(ksuspend_usb_wq);
-#endif
usb_destroy_configuration(udev);
usb_put_hcd(bus_to_hcd(udev->bus));
kfree(udev->product);
#endif /* CONFIG_PM */
+
+/* Returns 1 if @usb_bus is WUSB, 0 otherwise */
+static unsigned usb_bus_is_wusb(struct usb_bus *bus)
+{
+ struct usb_hcd *hcd = container_of(bus, struct usb_hcd, self);
+ return hcd->wireless;
+}
+
+
/**
* usb_alloc_dev - usb device constructor (usbcore-internal)
* @parent: hub to which device is connected; null to allocate a root hub
usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1)
{
struct usb_device *dev;
+ struct usb_hcd *usb_hcd = container_of(bus, struct usb_hcd, self);
+ unsigned root_hub = 0;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
dev->dev.bus = &usb_bus_type;
dev->dev.type = &usb_device_type;
dev->dev.dma_mask = bus->controller->dma_mask;
+ set_dev_node(&dev->dev, dev_to_node(bus->controller));
dev->state = USB_STATE_ATTACHED;
+ atomic_set(&dev->urbnum, 0);
INIT_LIST_HEAD(&dev->ep0.urb_list);
dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT;
/* ep0 maxpacket comes later, from device descriptor */
- dev->ep_in[0] = dev->ep_out[0] = &dev->ep0;
+ usb_enable_endpoint(dev, &dev->ep0);
+ dev->can_submit = 1;
/* Save readable and stable topology id, distinguishing devices
* by location for diagnostics, tools, driver model, etc. The
dev->dev.parent = bus->controller;
sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum);
+ root_hub = 1;
} else {
/* match any labeling on the hubs; it's one-based */
if (parent->devpath[0] == '0')
INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
dev->autosuspend_delay = usb_autosuspend_delay * HZ;
#endif
+ if (root_hub) /* Root hub always ok [and always wired] */
+ dev->authorized = 1;
+ else {
+ dev->authorized = usb_hcd->authorized_default;
+ dev->wusb = usb_bus_is_wusb(bus)? 1 : 0;
+ }
return dev;
}
* address (through the pointer provided).
*
* These buffers are used with URB_NO_xxx_DMA_MAP set in urb->transfer_flags
- * to avoid behaviors like using "DMA bounce buffers", or tying down I/O
- * mapping hardware for long idle periods. The implementation varies between
+ * to avoid behaviors like using "DMA bounce buffers", or thrashing IOMMU
+ * hardware during URB completion/resubmit. The implementation varies between
* platforms, depending on details of how DMA will work to this device.
- * Using these buffers also helps prevent cacheline sharing problems on
- * architectures where CPU caches are not DMA-coherent.
+ * Using these buffers also eliminates cacheline sharing problems on
+ * architectures where CPU caches are not DMA-coherent. On systems without
+ * bus-snooping caches, these buffers are uncached.
*
* When the buffer is no longer used, free it with usb_buffer_free().
*/
*
* This reclaims an I/O buffer, letting it be reused. The memory must have
* been allocated using usb_buffer_alloc(), and the parameters must match
- * those provided in that allocation request.
+ * those provided in that allocation request.
*/
void usb_buffer_free(
struct usb_device *dev,
/**
* usb_buffer_map_sg - create scatterlist DMA mapping(s) for an endpoint
* @dev: device to which the scatterlist will be mapped
- * @pipe: endpoint defining the mapping direction
+ * @is_in: mapping transfer direction
* @sg: the scatterlist to map
* @nents: the number of entries in the scatterlist
*
*
* Reverse the effect of this call with usb_buffer_unmap_sg().
*/
-int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe,
+int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int nents)
{
struct usb_bus *bus;
struct device *controller;
if (!dev
- || usb_pipecontrol(pipe)
|| !(bus = dev->bus)
|| !(controller = bus->controller)
|| !controller->dma_mask)
// FIXME generic api broken like pci, can't report errors
return dma_map_sg(controller, sg, nents,
- usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
/* XXX DISABLED, no users currently. If you wish to re-enable this
/**
* usb_buffer_dmasync_sg - synchronize DMA and CPU view of scatterlist buffer(s)
* @dev: device to which the scatterlist will be mapped
- * @pipe: endpoint defining the mapping direction
+ * @is_in: mapping transfer direction
* @sg: the scatterlist to synchronize
* @n_hw_ents: the positive return value from usb_buffer_map_sg
*
* Use this when you are re-using a scatterlist's data buffers for
* another USB request.
*/
-void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe,
+void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int n_hw_ents)
{
struct usb_bus *bus;
return;
dma_sync_sg(controller, sg, n_hw_ents,
- usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
#endif
/**
* usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist
* @dev: device to which the scatterlist will be mapped
- * @pipe: endpoint defining the mapping direction
+ * @is_in: mapping transfer direction
* @sg: the scatterlist to unmap
* @n_hw_ents: the positive return value from usb_buffer_map_sg
*
* Reverses the effect of usb_buffer_map_sg().
*/
-void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe,
+void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int n_hw_ents)
{
struct usb_bus *bus;
return;
dma_unmap_sg(controller, sg, n_hw_ents,
- usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
/* format to disable USB on kernel command line is: nousb */
projects / deliverable / linux.git / blobdiff