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| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2011-04-20 04:43:33 +0400 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2011-05-03 03:42:56 +0400 |
| commit | b61d378f2da41c748aba6ca19d77e1e1c02bcea5 (patch) | |
| tree | efb1541eefb32e57bf619a8bd85748a31b283031 /drivers/usb/host/xhci.h | |
| parent | 5cd43e33b9519143f06f507dd7cbee6b7a621885 (diff) | |
| download | linux-b61d378f2da41c748aba6ca19d77e1e1c02bcea5.tar.xz | |
xhci 1.0: Set transfer burst last packet count field.
The xHCI 1.0 specification defines a new isochronous TRB field, called
transfer burst last packet count (TBLPC). This field defines the number
of packets in the last "burst" of packets in a TD. Only SuperSpeed
endpoints can handle more than one burst, so this is set to the number for
packets in a TD for all non-SuperSpeed devices (minus one, since the field
is zero based).
This patch should have no effect on host controllers that don't advertise
the xHCI 1.0 (0x100) version number in their hci_version field.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 87ec3b079728..db661543a805 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -944,6 +944,7 @@ struct xhci_event_cmd { #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) #define TRB_TBC(p) (((p) & 0x3) << 7) +#define TRB_TLBPC(p) (((p) & 0xf) << 16) /* Cycle bit - indicates TRB ownership by HC or HCD */ #define TRB_CYCLE (1<<0) |