+/* Mask for wIndex in get/set port feature */
+#define USB_HUB_PORT_MASK 0xf
+
+/* Hub class request codes */
+#define USB_REQ_SET_HUB_DEPTH 0x0c
+
+/*
+ * As of USB 2.0, full/low speed devices are segregated into trees.
+ * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
+ * The other type grows from high speed hubs when they connect to
+ * full/low speed devices using "Transaction Translators" (TTs).
+ */
+struct usb_tt {
+ bool multi; /* true means one TT per port */
+ unsigned think_time; /* think time in ns */
+};
+
+/*
+ * CBI style
+ */
+
+#define US_CBI_ADSC 0
+
+/* Command Block Wrapper */
+struct umass_bbb_cbw {
+ __u32 dCBWSignature;
+# define CBWSIGNATURE 0x43425355
+ __u32 dCBWTag;
+ __u32 dCBWDataTransferLength;
+ __u8 bCBWFlags;
+# define CBWFLAGS_OUT 0x00
+# define CBWFLAGS_IN 0x80
+# define CBWFLAGS_SBZ 0x7f
+ __u8 bCBWLUN;
+ __u8 bCDBLength;
+# define CBWCDBLENGTH 16
+ __u8 CBWCDB[CBWCDBLENGTH];
+};
+#define UMASS_BBB_CBW_SIZE 31
+
+/* Command Status Wrapper */
+struct umass_bbb_csw {
+ __u32 dCSWSignature;
+# define CSWSIGNATURE 0x53425355
+ __u32 dCSWTag;
+ __u32 dCSWDataResidue;
+ __u8 bCSWStatus;
+# define CSWSTATUS_GOOD 0x0
+# define CSWSTATUS_FAILED 0x1
+# define CSWSTATUS_PHASE 0x2
+};
+#define UMASS_BBB_CSW_SIZE 13
+
+/*
+ * BULK only
+ */
+#define US_BBB_RESET 0xff
+#define US_BBB_GET_MAX_LUN 0xfe
+