/*-------------------------------------------------------------------------*//* list of all controllers using this driver  * */ static LIST_HEAD (hci_hcd_list);/* URB states (urb_state) */ /* isoc, interrupt single state *//* bulk transfer main state and 0-length packet */#define US_BULK 	0	 #define US_BULK0 	1/* three setup states */#define US_CTRL_SETUP 	2#define US_CTRL_DATA	1#define US_CTRL_ACK		0/*-------------------------------------------------------------------------*//* HC private part of a device descriptor * */#define NUM_EDS 32typedef struct epd {	struct urb * pipe_head;	struct list_head urb_queue;//	int urb_state;	struct timer_list timeout;	int last_iso;			/* timestamp of last queued ISOC transfer */} epd_t;struct hci_device {	epd_t ed [NUM_EDS];};/*-------------------------------------------------------------------------*//* Virtual Root HUB  * */#define usb_to_hci(usb)	((struct hci_device *)(usb)->hcpriv)struct virt_root_hub {	int devnum; 		/* Address of Root Hub endpoint */ 	void * urb;			/* interrupt URB of root hub */	int send;			/* active flag */ 	int interval;		/* intervall of roothub interrupt transfers */	struct timer_list rh_int_timer; /* intervall timer for rh interrupt EP */};#if 1/* USB HUB CONSTANTS (not OHCI-specific; see hub.h and USB spec) */ /* destination of request */#define RH_INTERFACE               0x01#define RH_ENDPOINT                0x02#define RH_OTHER                   0x03#define RH_CLASS                   0x20#define RH_VENDOR                  0x40/* Requests: bRequest << 8 | bmRequestType */#define RH_GET_STATUS           0x0080#define RH_CLEAR_FEATURE        0x0100#define RH_SET_FEATURE          0x0300#define RH_SET_ADDRESS			0x0500#define RH_GET_DESCRIPTOR		0x0680#define RH_SET_DESCRIPTOR       0x0700#define RH_GET_CONFIGURATION	0x0880#define RH_SET_CONFIGURATION	0x0900#define RH_GET_STATE            0x0280#define RH_GET_INTERFACE        0x0A80#define RH_SET_INTERFACE        0x0B00#define RH_SYNC_FRAME           0x0C80/* Our Vendor Specific Request */#define RH_SET_EP               0x2000/* Hub port features */#define RH_PORT_CONNECTION         0x00#define RH_PORT_ENABLE             0x01#define RH_PORT_SUSPEND            0x02#define RH_PORT_OVER_CURRENT       0x03#define RH_PORT_RESET              0x04#define RH_PORT_POWER              0x08#define RH_PORT_LOW_SPEED          0x09#define RH_C_PORT_CONNECTION       0x10#define RH_C_PORT_ENABLE           0x11#define RH_C_PORT_SUSPEND          0x12#define RH_C_PORT_OVER_CURRENT     0x13#define RH_C_PORT_RESET            0x14  /* Hub features */#define RH_C_HUB_LOCAL_POWER       0x00#define RH_C_HUB_OVER_CURRENT      0x01#define RH_DEVICE_REMOTE_WAKEUP    0x00#define RH_ENDPOINT_STALL          0x01#endif/*-------------------------------------------------------------------------*//* struct for each HC  * */#define MAX_TRANS	2 typedef struct td {		struct urb * urb; 		__u16 len;		__u16 iso_index;} td_t;typedef struct td_array {	int len;	td_t td [MAX_TRANS];	struct list_head list;} td_array_t;typedef struct itl_data {	int len;	int frame_number;	int sequence;	__u8* data_buf;	struct list_head list;} itl_data_t;typedef struct atl_data {	int len;	__u8* data_buf;	struct list_head list;} atl_data_t;typedef struct hci {	struct virt_root_hub rh;		/* roothub */	wait_queue_head_t waitq;		/* deletion of URBs and devices needs a waitqueue */	int active;						/* HC is operating */		struct list_head ctrl_list;		/* set of ctrl endpoints */	struct list_head bulk_list;		/* set of bulk endpoints */	struct list_head iso_list;		/* set of isoc endpoints */	struct list_head intr_list;		/* ordered (tree) set of int endpoints */	struct list_head del_list;		/* set of entpoints to be deleted */	td_array_t * td_array;	td_array_t a_td_array;	td_array_t i_td_array [2];	struct list_head itl_list; 	struct list_head hci_hcd_list;	/* list of all hci_hcd */  	struct usb_bus * bus;    		/* our bus */		//	int trans;						/* number of transactions pending */	int active_urbs;		/* number of URBs currently handling */	int frame_number;					/* frame number */	hcipriv_t hp;			/* individual part of hc type */	int buffer_status;	int iso_buffer_index;	struct tasklet_struct bottomHalf;	struct tasklet_struct ChipReset;	spinlock_t hci_lock;	int bh_in_progress;} hci_t;/*-------------------------------------------------------------------------*//* condition (error) CC codes and mapping OHCI like * */ #define TD_CC_NOERROR      0x00#define TD_CC_CRC          0x01#define TD_CC_BITSTUFFING  0x02#define TD_CC_DATATOGGLEM  0x03#define TD_CC_STALL        0x04#define TD_DEVNOTRESP      0x05#define TD_PIDCHECKFAIL    0x06#define TD_UNEXPECTEDPID   0x07#define TD_DATAOVERRUN     0x08#define TD_DATAUNDERRUN    0x09#define TD_BUFFEROVERRUN   0x0C#define TD_BUFFERUNDERRUN  0x0D#define TD_NOTACCESSED     0x0Fstatic int cc_to_error[16] = { /* mapping of the OHCI CC status to error codes */ 	/* No  Error  */               USB_ST_NOERROR,	/* CRC Error  */               USB_ST_CRC,	/* Bit Stuff  */               USB_ST_BITSTUFF,	/* Data Togg  */               USB_ST_CRC,	/* Stall      */               USB_ST_STALL,	/* DevNotResp */               USB_ST_NORESPONSE,	/* PIDCheck   */               USB_ST_BITSTUFF,	/* UnExpPID   */               USB_ST_BITSTUFF,	/* DataOver   */               USB_ST_DATAOVERRUN,	/* DataUnder  */               USB_ST_DATAUNDERRUN,	/* reservd    */               USB_ST_NORESPONSE,	/* reservd    */               USB_ST_NORESPONSE,	/* BufferOver */               USB_ST_BUFFEROVERRUN,	/* BuffUnder  */               USB_ST_BUFFERUNDERRUN,	/* Not Access */               USB_ST_NORESPONSE,	/* Not Access */               USB_ST_NORESPONSE };/*-------------------------------------------------------------------------*//* PID - packet ID  * */ #define PID_SETUP	0#define PID_OUT		1#define PID_IN		2/*-------------------------------------------------------------------------*//* misc  * */// #define GET_FRAME_NUMBER(hci) (hci)->frame_number/*-------------------------------------------------------------------------*//* functions * */ /* urb interface functions */static int hci_get_current_frame_number (struct usb_device *usb_dev);static int hci_unlink_urb (struct urb * urb);static int qu_queue_urb (hci_t * hci, struct urb * urb);/* root hub */static int rh_init_int_timer (struct urb * urb);static int rh_submit_urb (struct urb *urb);static int rh_unlink_urb (struct urb *urb);/* schedule functions */static int sh_add_packet (hci_t * hci, struct urb * urb);/* hc specific functions */static inline void hc_flush_data_cache (hci_t * hci, void * data, int len);static inline int hc_parse_trans (hci_t * hci, int * actbytes, void * data, 			int * cc, int * toggle, int length);// static inline void start_trans (hci_t * hci);static inline int hc_add_trans (hci_t * hci, int len, void * data,		int toggle, int maxps, int slow, int endpoint, int address, 		int pid, int format, int type);static void hc_start_int (hci_t * hci);static void hc_stop_int (hci_t * hci);static void hc_start_sof_int (hci_t * hci);