usbdebug: Refactor descriptor probing of dongle

Organized such that it is easy to support devices that do not
export special Debug Descriptor. Some of these can still work
in a fixed configuration and/or require additional initialisation
for UART clocks etc.

Change-Id: Id07fd6b69007332d67d9e9a456f58fdbca1999cd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7209
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)

1 files changed, 28 insertions, 0 deletions

diff --git a/src/drivers/usb/usb_ch9.h b/src/drivers/usb/usb_ch9.h
index a609bdb207..a4a3722ee8 100644
--- a/src/drivers/usb/usb_ch9.h
+++ b/src/drivers/usb/usb_ch9.h
@@ -81,6 +81,34 @@
 
 #define USB_DEVICE_DEBUG_MODE           6       /* (special devices only) */
 
+/*
+ * USB Packet IDs (PIDs)
+ */
+
+/* token */
+#define USB_PID_OUT		0xe1
+#define USB_PID_IN		0x69
+#define USB_PID_SOF		0xa5
+#define USB_PID_SETUP		0x2d
+/* handshake */
+#define USB_PID_ACK		0xd2
+#define USB_PID_NAK		0x5a
+#define USB_PID_STALL		0x1e
+#define USB_PID_NYET		0x96
+/* data */
+#define USB_PID_DATA0		0xc3
+#define USB_PID_DATA1		0x4b
+#define USB_PID_DATA2		0x87
+#define USB_PID_MDATA		0x0f
+/* Special */
+#define USB_PID_PREAMBLE	0x3c
+#define USB_PID_ERR		0x3c
+#define USB_PID_SPLIT		0x78
+#define USB_PID_PING		0xb4
+#define USB_PID_UNDEF_0		0xf0
+
+#define USB_PID_DATA_TOGGLE	0x88
+
 struct usb_ctrlrequest {
         u8  bRequestType;
         u8  bRequest;