ref: c0cbe87b357a4464a7d10ab8f38a65c77ea3b629
dir: /os/mpc/usb.h/
/*
* USB packet definitions
*/
#define GET2(p) ((((p)[1]&0xFF)<<8)|((p)[0]&0xFF))
#define PUT2(p,v) {((p)[0] = (v)); ((p)[1] = (v)>>8);}
enum {
/* request type */
RH2D = 0<<7,
RD2H = 1<<7,
Rstandard = 0<<5,
Rclass = 1<<5,
Rvendor = 2<<5,
Rdevice = 0,
Rinterface = 1,
Rendpt = 2,
Rother = 3,
/* standard requests */
GET_STATUS = 0,
CLEAR_FEATURE = 1,
SET_FEATURE = 3,
SET_ADDRESS = 5,
GET_DESCRIPTOR = 6,
SET_DESCRIPTOR = 7,
GET_CONFIGURATION = 8,
SET_CONFIGURATION = 9,
GET_INTERFACE = 10,
SET_INTERFACE = 11,
SYNCH_FRAME = 12,
/* hub class feature selectors */
C_HUB_LOCAL_POWER = 0,
C_HUB_OVER_CURRENT,
PORT_CONNECTION = 0,
PORT_ENABLE = 1,
PORT_SUSPEND = 2,
PORT_OVER_CURRENT = 3,
PORT_RESET = 4,
PORT_POWER = 8,
PORT_LOW_SPEED = 9,
C_PORT_CONNECTION = 16,
C_PORT_ENABLE,
C_PORT_SUSPEND,
C_PORT_OVER_CURRENT,
C_PORT_RESET,
/* descriptor types */
DEVICE = 1,
CONFIGURATION = 2,
STRING = 3,
INTERFACE = 4,
ENDPOINT = 5,
HID = 0x21,
REPORT = 0x22,
PHYSICAL = 0x23,
/* feature selectors */
DEVICE_REMOTE_WAKEUP = 1,
ENDPOINT_STALL = 0,
};