patch-2.3.14 linux/drivers/usb/uhci.h

• Lines: 46
• Date: Tue Aug 17 16:47:26 1999
• Orig file: v2.3.13/linux/drivers/usb/uhci.h
• Orig date: Mon Aug 9 14:59:23 1999

diff -u --recursive --new-file v2.3.13/linux/drivers/usb/uhci.h linux/drivers/usb/uhci.h
@@ -77,6 +77,9 @@
 	__u32 frame[1024];
 } __attribute__((aligned(4096)));
 
+/*
+ * for TD <status>:
+ */
 #define TD_CTRL_SPD		(1 << 29)	/* Short Packet Detect */
 #define TD_CTRL_LS		(1 << 26)	/* Low Speed Device */
 #define TD_CTRL_IOS		(1 << 25)	/* Isochronous Select */
@@ -88,10 +91,35 @@
 #define TD_CTRL_NAK		(1 << 19)	/* NAK Received */
 #define TD_CTRL_CRCTIME		(1 << 18)	/* CTC/Time Out Error */
 #define TD_CTRL_BITSTUFF	(1 << 17)	/* Bit Stuff Error */
+#define TD_CTRL_ACTLEN_MASK	0x7ff		/* actual length, encoded as n - 1 */
+
+#define TD_CTRL_ANY_ERROR	(TD_CTRL_STALLED | TD_CTRL_DBUFERR | \
+				 TD_CTRL_BABBLE | TD_CTRL_CRCTIME | TD_CTRL_BITSTUFF)
+
+#define uhci_status_bits(ctrl_sts)	((ctrl_sts >> 16) & 0xff)
+#define uhci_actual_length(ctrl_sts)	((ctrl_sts + 1) & TD_CTRL_ACTLEN_MASK) /* 1-based */
 
 #define uhci_ptr_to_virt(x)	bus_to_virt(x & ~UHCI_PTR_BITS)
 
+/*
+ * for TD <flags>:
+ */
 #define UHCI_TD_REMOVE		0x0001		/* Remove when done */
+
+/*
+ * for TD <info>: (a.k.a. Token)
+ */
+#define TD_TOKEN_TOGGLE		19
+
+#define uhci_maxlen(token)	((token) >> 21)
+#define uhci_toggle(token)	(((token) >> TD_TOKEN_TOGGLE) & 1)
+#define uhci_endpoint(token)	(((token) >> 15) & 0xf)
+#define uhci_devaddr(token)	(((token) >> 8) & 0x7f)
+#define uhci_devep(token)	(((token) >> 8) & 0x7ff)
+#define uhci_packetid(token)	((token) & 0xff)
+#define uhci_packetout(token)	(uhci_packetid(token) != USB_PID_IN)
+#define uhci_packetin(token)	(uhci_packetid(token) == USB_PID_IN)
+
 
 /*
  * The documentation says "4 words for hardware, 4 words for software".