drivers/usb/host/ohci-s3c24xx.h - github/trini/u-boot - Gitiles

 /*
  * URB OHCI HCD (Host Controller Driver) for USB.
  *
  * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
  * (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
  *
  * usb-ohci.h
  */


 static int cc_to_error[16] = {

 /* mapping of the OHCI CC status to error codes */
 	/* No  Error  */ 0,
 	/* CRC Error  */ USB_ST_CRC_ERR,
 	/* Bit Stuff  */ USB_ST_BIT_ERR,
 	/* Data Togg  */ USB_ST_CRC_ERR,
 	/* Stall      */ USB_ST_STALLED,
 	/* DevNotResp */ -1,
 	/* PIDCheck   */ USB_ST_BIT_ERR,
 	/* UnExpPID   */ USB_ST_BIT_ERR,
 	/* DataOver   */ USB_ST_BUF_ERR,
 	/* DataUnder  */ USB_ST_BUF_ERR,
 	/* reservd    */ -1,
 	/* reservd    */ -1,
 	/* BufferOver */ USB_ST_BUF_ERR,
 	/* BuffUnder  */ USB_ST_BUF_ERR,
 	/* Not Access */ -1,
 	/* Not Access */ -1
 };

 /* ED States */
 #define ED_NEW		0x00
 #define ED_UNLINK	0x01
 #define ED_OPER		0x02
 #define ED_DEL		0x04
 #define ED_URB_DEL	0x08

 /* usb_ohci_ed */
 struct ed {
 	__u32 hwINFO;
 	__u32 hwTailP;
 	__u32 hwHeadP;
 	__u32 hwNextED;

 	struct ed *ed_prev;
 	__u8 int_period;
 	__u8 int_branch;
 	__u8 int_load;
 	__u8 int_interval;
 	__u8 state;
 	__u8 type;
 	__u16 last_iso;
 	struct ed *ed_rm_list;

 	struct usb_device *usb_dev;
 	__u32 unused[3];
 } __attribute__ ((aligned(16)));

 /* TD info field */
 #define TD_CC			0xf0000000
 #define TD_CC_GET(td_p)		(((td_p) >> 28) & 0x0f)
 #define TD_CC_SET(td_p, cc) \
 	{(td_p) = ((td_p) & 0x0fffffff) | (((cc) & 0x0f) << 28)}
 #define TD_EC			0x0C000000
 #define TD_T			0x03000000
 #define TD_T_DATA0		0x02000000
 #define TD_T_DATA1		0x03000000
 #define TD_T_TOGGLE		0x00000000
 #define TD_R			0x00040000
 #define TD_DI			0x00E00000
 #define TD_DI_SET(X)		(((X) & 0x07)<< 21)
 #define TD_DP			0x00180000
 #define TD_DP_SETUP		0x00000000
 #define TD_DP_IN		0x00100000
 #define TD_DP_OUT		0x00080000

 #define TD_ISO			0x00010000
 #define TD_DEL			0x00020000

 /* CC Codes */
 #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		0x0F


 #define MAXPSW 1

 struct td {
 	__u32 hwINFO;
 	__u32 hwCBP;		/* Current Buffer Pointer */
 	__u32 hwNextTD;		/* Next TD Pointer */
 	__u32 hwBE;		/* Memory Buffer End Pointer */

 	__u8 unused;
 	__u8 index;
 	struct ed *ed;
 	struct td *next_dl_td;
 	struct usb_device *usb_dev;
 	int transfer_len;
 	__u32 data;

 	__u32 unused2[2];
 } __attribute__ ((aligned(32)));

 #define OHCI_ED_SKIP	(1 << 14)

 /*
  * The HCCA (Host Controller Communications Area) is a 256 byte
  * structure defined in the OHCI spec. that the host controller is
  * told the base address of.  It must be 256-byte aligned.
  */

 #define NUM_INTS 32		/* part of the OHCI standard */
 struct ohci_hcca {
 	__u32 int_table[NUM_INTS];	/* Interrupt ED table */
 	__u16 frame_no;		/* current frame number */
 	__u16 pad1;		/* set to 0 on each frame_no change */
 	__u32 done_head;	/* info returned for an interrupt */
 	u8 reserved_for_hc[116];
 } __attribute__ ((aligned(256)));

 /*
  * Maximum number of root hub ports.
  */
 #define MAX_ROOT_PORTS	15	/* maximum OHCI root hub ports */

 /*
  * This is the structure of the OHCI controller's memory mapped I/O
  * region.  This is Memory Mapped I/O.	You must use the readl() and
  * writel() macros defined in asm/io.h to access these!!
  */
 struct ohci_regs {
 	/* control and status registers */
 	__u32 revision;
 	__u32 control;
 	__u32 cmdstatus;
 	__u32 intrstatus;
 	__u32 intrenable;
 	__u32 intrdisable;
 	/* memory pointers */
 	__u32 hcca;
 	__u32 ed_periodcurrent;
 	__u32 ed_controlhead;
 	__u32 ed_controlcurrent;
 	__u32 ed_bulkhead;
 	__u32 ed_bulkcurrent;
 	__u32 donehead;
 	/* frame counters */
 	__u32 fminterval;
 	__u32 fmremaining;
 	__u32 fmnumber;
 	__u32 periodicstart;
 	__u32 lsthresh;
 	/* Root hub ports */
 	struct ohci_roothub_regs {
 		__u32 a;
 		__u32 b;
 		__u32 status;
 		__u32 portstatus[MAX_ROOT_PORTS];
 	} roothub;
 } __attribute__ ((aligned(32)));

 /* OHCI CONTROL AND STATUS REGISTER MASKS */

 /*
  * HcControl (control) register masks
  */
 #define OHCI_CTRL_CBSR	(3 << 0)	/* control/bulk service ratio */
 #define OHCI_CTRL_PLE	(1 << 2)	/* periodic list enable */
 #define OHCI_CTRL_IE	(1 << 3)	/* isochronous enable */
 #define OHCI_CTRL_CLE	(1 << 4)	/* control list enable */
 #define OHCI_CTRL_BLE	(1 << 5)	/* bulk list enable */
 #define OHCI_CTRL_HCFS	(3 << 6)	/* host controller functional state */
 #define OHCI_CTRL_IR	(1 << 8)	/* interrupt routing */
 #define OHCI_CTRL_RWC	(1 << 9)	/* remote wakeup connected */
 #define OHCI_CTRL_RWE	(1 << 10)	/* remote wakeup enable */

 /* pre-shifted values for HCFS */
 #	define OHCI_USB_RESET	(0 << 6)
 #	define OHCI_USB_RESUME	(1 << 6)
 #	define OHCI_USB_OPER	(2 << 6)
 #	define OHCI_USB_SUSPEND	(3 << 6)

 /*
  * HcCommandStatus (cmdstatus) register masks
  */
 #define OHCI_HCR	(1 << 0)	/* host controller reset */
 #define OHCI_CLF	(1 << 1)	/* control list filled */
 #define OHCI_BLF	(1 << 2)	/* bulk list filled */
 #define OHCI_OCR	(1 << 3)	/* ownership change request */
 #define OHCI_SOC	(3 << 16)	/* scheduling overrun count */

 /*
  * masks used with interrupt registers:
  * HcInterruptStatus (intrstatus)
  * HcInterruptEnable (intrenable)
  * HcInterruptDisable (intrdisable)
  */
 #define OHCI_INTR_SO	(1 << 0)	/* scheduling overrun */
 #define OHCI_INTR_WDH	(1 << 1)	/* writeback of done_head */
 #define OHCI_INTR_SF	(1 << 2)	/* start frame */
 #define OHCI_INTR_RD	(1 << 3)	/* resume detect */
 #define OHCI_INTR_UE	(1 << 4)	/* unrecoverable error */
 #define OHCI_INTR_FNO	(1 << 5)	/* frame number overflow */
 #define OHCI_INTR_RHSC	(1 << 6)	/* root hub status change */
 #define OHCI_INTR_OC	(1 << 30)	/* ownership change */
 #define OHCI_INTR_MIE	(1 << 31)	/* master interrupt enable */

 /* Virtual Root HUB */
 struct virt_root_hub {
 	int devnum;		/* Address of Root Hub endpoint */
 	void *dev;		/* was urb */
 	void *int_addr;
 	int send;
 	int interval;
 };

 /* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */

 /* 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

 #define RH_ACK			0x01
 #define RH_REQ_ERR		-1
 #define RH_NACK			0x00


 /* OHCI ROOT HUB REGISTER MASKS */

 /* roothub.portstatus [i] bits */
 #define RH_PS_CCS		0x00000001 /* current connect status */
 #define RH_PS_PES		0x00000002 /* port enable status */
 #define RH_PS_PSS		0x00000004 /* port suspend status */
 #define RH_PS_POCI		0x00000008 /* port over current indicator */
 #define RH_PS_PRS		0x00000010 /* port reset status */
 #define RH_PS_PPS		0x00000100 /* port power status */
 #define RH_PS_LSDA		0x00000200 /* low speed device attached */
 #define RH_PS_CSC		0x00010000 /* connect status change */
 #define RH_PS_PESC		0x00020000 /* port enable status change */
 #define RH_PS_PSSC		0x00040000 /* port suspend status change */
 #define RH_PS_OCIC		0x00080000 /* over current indicator change */
 #define RH_PS_PRSC		0x00100000 /* port reset status change */

 /* roothub.status bits */
 #define RH_HS_LPS		0x00000001 /* local power status */
 #define RH_HS_OCI		0x00000002 /* over current indicator */
 #define RH_HS_DRWE		0x00008000 /* device remote wakeup enable */
 #define RH_HS_LPSC		0x00010000 /* local power status change */
 #define RH_HS_OCIC		0x00020000 /* over current indicator change */
 #define RH_HS_CRWE		0x80000000 /* clear remote wakeup enable */

 /* roothub.b masks */
 #define RH_B_DR			0x0000ffff /* device removable flags */
 #define RH_B_PPCM		0xffff0000 /* port power control mask */

 /* roothub.a masks */
 #define	RH_A_NDP		(0xff << 0)  /* number of downstream ports */
 #define	RH_A_PSM		(1 << 8)     /* power switching mode */
 #define	RH_A_NPS		(1 << 9)     /* no power switching */
 #define	RH_A_DT			(1 << 10)    /* device type (mbz) */
 #define	RH_A_OCPM		(1 << 11)    /* over current protection mode */
 #define	RH_A_NOCP		(1 << 12)    /* no over current protection */
 #define	RH_A_POTPGT		(0xff << 24) /* power on to power good time */

 /* urb */
 #define N_URB_TD 48
 struct urb_priv {
 	struct ed *ed;
 	__u16 length;		/* number of tds associated with this request */
 	__u16 td_cnt;		/* number of tds already serviced */
 	int state;
 	unsigned long pipe;
 	int actual_length;
 	struct td *td[N_URB_TD];	/* list pointer to all corresponding TDs
 					   associated with this request */
 };
 #define URB_DEL 1

 /*
  * This is the full ohci controller description
  *
  * Note how the "proper" USB information is just
  * a subset of what the full implementation needs. (Linus)
  */


 struct ohci {
 	struct ohci_hcca *hcca;	/* hcca */
 	/*dma_addr_t hcca_dma; */

 	int irq;
 	int disabled;		/* e.g. got a UE, we're hung */
 	int sleeping;
 	unsigned long flags;	/* for HC bugs */

 	struct ohci_regs *regs;	/* OHCI controller's memory */

 	struct ed *ed_rm_list[2];  /* lists of all endpoints to be removed */
 	struct ed *ed_bulktail;    /* last endpoint of bulk list */
 	struct ed *ed_controltail; /* last endpoint of control list */
 	int intrstatus;
 	__u32 hc_control;	/* copy of the hc control reg */
 	struct usb_device *dev[32];
 	struct virt_root_hub rh;

 	const char *slot_name;
 };

 #define NUM_EDS 8		/* num of preallocated endpoint descriptors */

 struct ohci_device {
 	struct ed ed[NUM_EDS];
 	int ed_cnt;
 };

 /* hcd */
 /* endpoint */
 static int ep_link(struct ohci *ohci, struct ed *ed);
 static int ep_unlink(struct ohci *ohci, struct ed *ed);
 static struct ed *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe);

 /*-------------------------------------------------------------------------*/

 /* we need more TDs than EDs */
 #define NUM_TD 64

 /* +1 so we can align the storage */
 struct td gtd[NUM_TD + 1];

 /* pointers to aligned storage */
 struct td *ptd;

 /* TDs ... */
 static inline struct td *td_alloc(struct usb_device *usb_dev)
 {
 	int i;
 	struct td *td;

 	td = NULL;
 	for (i = 0; i < NUM_TD; i++) {
 		if (ptd[i].usb_dev == NULL) {
 			td = &ptd[i];
 			td->usb_dev = usb_dev;
 			break;
 		}
 	}

 	return td;
 }

 static inline void ed_free(struct ed *ed)
 {
 	ed->usb_dev = NULL;
 }
	/*
	* URB OHCI HCD (Host Controller Driver) for USB.
	*
	* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
	* (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
	*
	* usb-ohci.h
	*/


	static int cc_to_error[16] = {

	/* mapping of the OHCI CC status to error codes */
	/* No Error */ 0,
	/* CRC Error */ USB_ST_CRC_ERR,
	/* Bit Stuff */ USB_ST_BIT_ERR,
	/* Data Togg */ USB_ST_CRC_ERR,
	/* Stall */ USB_ST_STALLED,
	/* DevNotResp */ -1,
	/* PIDCheck */ USB_ST_BIT_ERR,
	/* UnExpPID */ USB_ST_BIT_ERR,
	/* DataOver */ USB_ST_BUF_ERR,
	/* DataUnder */ USB_ST_BUF_ERR,
	/* reservd */ -1,
	/* reservd */ -1,
	/* BufferOver */ USB_ST_BUF_ERR,
	/* BuffUnder */ USB_ST_BUF_ERR,
	/* Not Access */ -1,
	/* Not Access */ -1
	};

	/* ED States */
	#define ED_NEW 0x00
	#define ED_UNLINK 0x01
	#define ED_OPER 0x02
	#define ED_DEL 0x04
	#define ED_URB_DEL 0x08

	/* usb_ohci_ed */
	struct ed {
	__u32 hwINFO;
	__u32 hwTailP;
	__u32 hwHeadP;
	__u32 hwNextED;

	struct ed *ed_prev;
	__u8 int_period;
	__u8 int_branch;
	__u8 int_load;
	__u8 int_interval;
	__u8 state;
	__u8 type;
	__u16 last_iso;
	struct ed *ed_rm_list;

	struct usb_device *usb_dev;
	__u32 unused[3];
	} __attribute__ ((aligned(16)));

	/* TD info field */
	#define TD_CC 0xf0000000
	#define TD_CC_GET(td_p) (((td_p) >> 28) & 0x0f)
	#define TD_CC_SET(td_p, cc) \
	{(td_p) = ((td_p) & 0x0fffffff) \| (((cc) & 0x0f) << 28)}
	#define TD_EC 0x0C000000
	#define TD_T 0x03000000
	#define TD_T_DATA0 0x02000000
	#define TD_T_DATA1 0x03000000
	#define TD_T_TOGGLE 0x00000000
	#define TD_R 0x00040000
	#define TD_DI 0x00E00000
	#define TD_DI_SET(X) (((X) & 0x07)<< 21)
	#define TD_DP 0x00180000
	#define TD_DP_SETUP 0x00000000
	#define TD_DP_IN 0x00100000
	#define TD_DP_OUT 0x00080000

	#define TD_ISO 0x00010000
	#define TD_DEL 0x00020000

	/* CC Codes */
	#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 0x0F


	#define MAXPSW 1

	struct td {
	__u32 hwINFO;
	__u32 hwCBP; /* Current Buffer Pointer */
	__u32 hwNextTD; /* Next TD Pointer */
	__u32 hwBE; /* Memory Buffer End Pointer */

	__u8 unused;
	__u8 index;
	struct ed *ed;
	struct td *next_dl_td;
	struct usb_device *usb_dev;
	int transfer_len;
	__u32 data;

	__u32 unused2[2];
	} __attribute__ ((aligned(32)));

	#define OHCI_ED_SKIP (1 << 14)

	/*
	* The HCCA (Host Controller Communications Area) is a 256 byte
	* structure defined in the OHCI spec. that the host controller is
	* told the base address of. It must be 256-byte aligned.
	*/

	#define NUM_INTS 32 /* part of the OHCI standard */
	struct ohci_hcca {
	__u32 int_table[NUM_INTS]; /* Interrupt ED table */
	__u16 frame_no; /* current frame number */
	__u16 pad1; /* set to 0 on each frame_no change */
	__u32 done_head; /* info returned for an interrupt */
	u8 reserved_for_hc[116];
	} __attribute__ ((aligned(256)));

	/*
	* Maximum number of root hub ports.
	*/
	#define MAX_ROOT_PORTS 15 /* maximum OHCI root hub ports */

	/*
	* This is the structure of the OHCI controller's memory mapped I/O
	* region. This is Memory Mapped I/O. You must use the readl() and
	* writel() macros defined in asm/io.h to access these!!
	*/
	struct ohci_regs {
	/* control and status registers */
	__u32 revision;
	__u32 control;
	__u32 cmdstatus;
	__u32 intrstatus;
	__u32 intrenable;
	__u32 intrdisable;
	/* memory pointers */
	__u32 hcca;
	__u32 ed_periodcurrent;
	__u32 ed_controlhead;
	__u32 ed_controlcurrent;
	__u32 ed_bulkhead;
	__u32 ed_bulkcurrent;
	__u32 donehead;
	/* frame counters */
	__u32 fminterval;
	__u32 fmremaining;
	__u32 fmnumber;
	__u32 periodicstart;
	__u32 lsthresh;
	/* Root hub ports */
	struct ohci_roothub_regs {
	__u32 a;
	__u32 b;
	__u32 status;
	__u32 portstatus[MAX_ROOT_PORTS];
	} roothub;
	} __attribute__ ((aligned(32)));

	/* OHCI CONTROL AND STATUS REGISTER MASKS */

	/*
	* HcControl (control) register masks
	*/
	#define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */
	#define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */
	#define OHCI_CTRL_IE (1 << 3) /* isochronous enable */
	#define OHCI_CTRL_CLE (1 << 4) /* control list enable */
	#define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */
	#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
	#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
	#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
	#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */

	/* pre-shifted values for HCFS */
	# define OHCI_USB_RESET (0 << 6)
	# define OHCI_USB_RESUME (1 << 6)
	# define OHCI_USB_OPER (2 << 6)
	# define OHCI_USB_SUSPEND (3 << 6)

	/*
	* HcCommandStatus (cmdstatus) register masks
	*/
	#define OHCI_HCR (1 << 0) /* host controller reset */
	#define OHCI_CLF (1 << 1) /* control list filled */
	#define OHCI_BLF (1 << 2) /* bulk list filled */
	#define OHCI_OCR (1 << 3) /* ownership change request */
	#define OHCI_SOC (3 << 16) /* scheduling overrun count */

	/*
	* masks used with interrupt registers:
	* HcInterruptStatus (intrstatus)
	* HcInterruptEnable (intrenable)
	* HcInterruptDisable (intrdisable)
	*/
	#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
	#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
	#define OHCI_INTR_SF (1 << 2) /* start frame */
	#define OHCI_INTR_RD (1 << 3) /* resume detect */
	#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
	#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
	#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
	#define OHCI_INTR_OC (1 << 30) /* ownership change */
	#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */

	/* Virtual Root HUB */
	struct virt_root_hub {
	int devnum; /* Address of Root Hub endpoint */
	void dev; / was urb */
	void *int_addr;
	int send;
	int interval;
	};

	/* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */

	/* 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

	#define RH_ACK 0x01
	#define RH_REQ_ERR -1
	#define RH_NACK 0x00


	/* OHCI ROOT HUB REGISTER MASKS */

	/* roothub.portstatus [i] bits */
	#define RH_PS_CCS 0x00000001 /* current connect status */
	#define RH_PS_PES 0x00000002 /* port enable status */
	#define RH_PS_PSS 0x00000004 /* port suspend status */
	#define RH_PS_POCI 0x00000008 /* port over current indicator */
	#define RH_PS_PRS 0x00000010 /* port reset status */
	#define RH_PS_PPS 0x00000100 /* port power status */
	#define RH_PS_LSDA 0x00000200 /* low speed device attached */
	#define RH_PS_CSC 0x00010000 /* connect status change */
	#define RH_PS_PESC 0x00020000 /* port enable status change */
	#define RH_PS_PSSC 0x00040000 /* port suspend status change */
	#define RH_PS_OCIC 0x00080000 /* over current indicator change */
	#define RH_PS_PRSC 0x00100000 /* port reset status change */

	/* roothub.status bits */
	#define RH_HS_LPS 0x00000001 /* local power status */
	#define RH_HS_OCI 0x00000002 /* over current indicator */
	#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
	#define RH_HS_LPSC 0x00010000 /* local power status change */
	#define RH_HS_OCIC 0x00020000 /* over current indicator change */
	#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */

	/* roothub.b masks */
	#define RH_B_DR 0x0000ffff /* device removable flags */
	#define RH_B_PPCM 0xffff0000 /* port power control mask */

	/* roothub.a masks */
	#define RH_A_NDP (0xff << 0) /* number of downstream ports */
	#define RH_A_PSM (1 << 8) /* power switching mode */
	#define RH_A_NPS (1 << 9) /* no power switching */
	#define RH_A_DT (1 << 10) /* device type (mbz) */
	#define RH_A_OCPM (1 << 11) /* over current protection mode */
	#define RH_A_NOCP (1 << 12) /* no over current protection */
	#define RH_A_POTPGT (0xff << 24) /* power on to power good time */

	/* urb */
	#define N_URB_TD 48
	struct urb_priv {
	struct ed *ed;
	__u16 length; /* number of tds associated with this request */
	__u16 td_cnt; /* number of tds already serviced */
	int state;
	unsigned long pipe;
	int actual_length;
	struct td td[N_URB_TD]; / list pointer to all corresponding TDs
	associated with this request */
	};
	#define URB_DEL 1

	/*
	* This is the full ohci controller description
	*
	* Note how the "proper" USB information is just
	* a subset of what the full implementation needs. (Linus)
	*/


	struct ohci {
	struct ohci_hcca hcca; / hcca */
	/dma_addr_t hcca_dma; /

	int irq;
	int disabled; /* e.g. got a UE, we're hung */
	int sleeping;
	unsigned long flags; /* for HC bugs */

	struct ohci_regs regs; / OHCI controller's memory */

	struct ed ed_rm_list[2]; / lists of all endpoints to be removed */
	struct ed ed_bulktail; / last endpoint of bulk list */
	struct ed ed_controltail; / last endpoint of control list */
	int intrstatus;
	__u32 hc_control; /* copy of the hc control reg */
	struct usb_device *dev[32];
	struct virt_root_hub rh;

	const char *slot_name;
	};

	#define NUM_EDS 8 /* num of preallocated endpoint descriptors */

	struct ohci_device {
	struct ed ed[NUM_EDS];
	int ed_cnt;
	};

	/* hcd */
	/* endpoint */
	static int ep_link(struct ohci ohci, struct ed ed);
	static int ep_unlink(struct ohci ohci, struct ed ed);
	static struct ed ep_add_ed(struct usb_device usb_dev, unsigned long pipe);

	/-------------------------------------------------------------------------/

	/* we need more TDs than EDs */
	#define NUM_TD 64

	/* +1 so we can align the storage */
	struct td gtd[NUM_TD + 1];

	/* pointers to aligned storage */
	struct td *ptd;

	/* TDs ... */
	static inline struct td td_alloc(struct usb_device usb_dev)
	{
	int i;
	struct td *td;

	td = NULL;
	for (i = 0; i < NUM_TD; i++) {
	if (ptd[i].usb_dev == NULL) {
	td = &ptd[i];
	td->usb_dev = usb_dev;
	break;
	}
	}

	return td;
	}

	static inline void ed_free(struct ed *ed)
	{
	ed->usb_dev = NULL;
	}