diff options
| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2009-04-27 19:54:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-06-15 21:44:48 -0700 |
| commit | 6b403b020c1f42180b14d28d832da61167cff822 (patch) | |
| tree | 4b7271244f3b150a31c856970651d2171343d2c7 /drivers/usb/core/hcd.c | |
| parent | 7f84eef0dafb1d318263d8b71c38700aaf2d530d (diff) | |
| download | linux-6b403b020c1f42180b14d28d832da61167cff822.tar.gz | |
USB: Add SuperSpeed to the list of USB device speeds.
Modify the USB core to handle the new USB 3.0 speed, "SuperSpeed". This is 5.0 Gbps (wire speed). There are probably more places that check for speed that I've missed. SuperSpeed devices have a 512 byte endpoint 0 max packet size. This shows up as a bMaxPacketSize0 set to 0x09 (see table 9-8 of the USB 3.0 bus spec). xHCI spec says that the xHC can handle intervals up to 2^15 microframes. That might change when real silicon becomes available. Add FIXME note for SuperSpeed isochronous endpoints. They can transmit up to 16 packets in one "burst" before they wait for an acknowledgment of the packets. They can do up to 3 bursts per microframe (determined by the mult value in the endpoint companion descriptor). The xHCI driver doesn't have support for isoc yet, so fix this later. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index c65d95604028..120bb56c4b84 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1870,8 +1870,20 @@ int usb_add_hcd(struct usb_hcd *hcd, retval = -ENOMEM; goto err_allocate_root_hub; } - rhdev->speed = (hcd->driver->flags & HCD_USB2) ? USB_SPEED_HIGH : - USB_SPEED_FULL; + + switch (hcd->driver->flags & HCD_MASK) { + case HCD_USB11: + rhdev->speed = USB_SPEED_FULL; + break; + case HCD_USB2: + rhdev->speed = USB_SPEED_HIGH; + break; + case HCD_USB3: + rhdev->speed = USB_SPEED_SUPER; + break; + default: + goto err_allocate_root_hub; + } hcd->self.root_hub = rhdev; /* wakeup flag init defaults to "everything works" for root hubs, |