[people/ms/u-boot.git] / drivers / usb_ohci.h

/*
 * 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
 */

/* functions for doing board specific setup/cleanup */
#ifdef CFG_USB_BOARD_INIT
extern int usb_board_init(void);
extern int usb_board_stop(void);
extern int usb_cpu_init_fail(void);
#endif

#ifdef CFG_USB_CPU_INIT
extern int usb_cpu_init(void);
extern int usb_cpu_stop(void);
extern int usb_cpu_init_fail(void);
#endif


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)));
typedef struct ed ed_t;


/* 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 */

	__u16 hwPSW[MAXPSW];
	__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)));
typedef struct td td_t;

#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	3	/* 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
typedef struct
{
	ed_t *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;
	td_t *td[N_URB_TD];	/* list pointer to all corresponding TDs associated with this request */
} urb_priv_t;
#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)
 */


typedef 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 */

	ed_t *ed_rm_list[2];	 /* lists of all endpoints to be removed */
	ed_t *ed_bulktail;	 /* last endpoint of bulk list */
	ed_t *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;
} ohci_t;

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

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

/* hcd */
/* endpoint */
static int ep_link(ohci_t * ohci, ed_t * ed);
static int ep_unlink(ohci_t * ohci, ed_t * ed);
static ed_t * 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 */
td_t gtd[NUM_TD+1];
/* pointers to aligned storage */
td_t *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;
}
Commit	Line	Data
3e326ece MK	1	/*
	2	* URB OHCI HCD (Host Controller Driver) for USB.
	3	*
	4	* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
	5	* (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
	6	*
	7	* usb-ohci.h
	8	*/
	9
	10	/* functions for doing board specific setup/cleanup */
24e37645	11	#ifdef CFG_USB_BOARD_INIT
3e326ece MK	12	extern int usb_board_init(void);
3e326ece MK	13	extern int usb_board_stop(void);
ddf83a2f	14	extern int usb_cpu_init_fail(void);
24e37645 MK	15	#endif
	16
	17	#ifdef CFG_USB_CPU_INIT
	18	extern int usb_cpu_init(void);
	19	extern int usb_cpu_stop(void);
ddf83a2f	20	extern int usb_cpu_init_fail(void);
24e37645 MK	21	#endif
24e37645 MK	22
3e326ece MK	23
	24	static int cc_to_error[16] = {
	25
	26	/* mapping of the OHCI CC status to error codes */
	27	/* No Error */ 0,
	28	/* CRC Error */ USB_ST_CRC_ERR,
	29	/* Bit Stuff */ USB_ST_BIT_ERR,
	30	/* Data Togg */ USB_ST_CRC_ERR,
	31	/* Stall */ USB_ST_STALLED,
	32	/* DevNotResp */ -1,
	33	/* PIDCheck */ USB_ST_BIT_ERR,
	34	/* UnExpPID */ USB_ST_BIT_ERR,
	35	/* DataOver */ USB_ST_BUF_ERR,
	36	/* DataUnder */ USB_ST_BUF_ERR,
	37	/* reservd */ -1,
	38	/* reservd */ -1,
	39	/* BufferOver */ USB_ST_BUF_ERR,
	40	/* BuffUnder */ USB_ST_BUF_ERR,
	41	/* Not Access */ -1,
	42	/* Not Access */ -1
	43	};
	44
	45	/* ED States */
	46
	47	#define ED_NEW 0x00
	48	#define ED_UNLINK 0x01
	49	#define ED_OPER 0x02
	50	#define ED_DEL 0x04
	51	#define ED_URB_DEL 0x08
	52
	53	/* usb_ohci_ed */
	54	struct ed {
	55	__u32 hwINFO;
	56	__u32 hwTailP;
	57	__u32 hwHeadP;
	58	__u32 hwNextED;
	59
	60	struct ed *ed_prev;
	61	__u8 int_period;
	62	__u8 int_branch;
	63	__u8 int_load;
	64	__u8 int_interval;
	65	__u8 state;
	66	__u8 type;
	67	__u16 last_iso;
	68	struct ed *ed_rm_list;
	69
	70	struct usb_device *usb_dev;
	71	__u32 unused[3];
	72	} __attribute((aligned(16)));
	73	typedef struct ed ed_t;
	74
	75
	76	/* TD info field */
	77	#define TD_CC 0xf0000000
	78	#define TD_CC_GET(td_p) ((td_p >>28) & 0x0f)
	79	#define TD_CC_SET(td_p, cc) (td_p) = ((td_p) & 0x0fffffff) \| (((cc) & 0x0f) << 28)
	80	#define TD_EC 0x0C000000
	81	#define TD_T 0x03000000
	82	#define TD_T_DATA0 0x02000000
	83	#define TD_T_DATA1 0x03000000
	84	#define TD_T_TOGGLE 0x00000000
	85	#define TD_R 0x00040000
	86	#define TD_DI 0x00E00000
87	#define TD_DI_SET(X) (((X) & 0x07)<< 21)
88	#define TD_DP 0x00180000
89	#define TD_DP_SETUP 0x00000000
90	#define TD_DP_IN 0x00100000
91	#define TD_DP_OUT 0x00080000
92
93	#define TD_ISO 0x00010000
94	#define TD_DEL 0x00020000
95
96	/* CC Codes */
97	#define TD_CC_NOERROR 0x00
98	#define TD_CC_CRC 0x01
99	#define TD_CC_BITSTUFFING 0x02
100	#define TD_CC_DATATOGGLEM 0x03
101	#define TD_CC_STALL 0x04
102	#define TD_DEVNOTRESP 0x05
103	#define TD_PIDCHECKFAIL 0x06
104	#define TD_UNEXPECTEDPID 0x07
105	#define TD_DATAOVERRUN 0x08
106	#define TD_DATAUNDERRUN 0x09
107	#define TD_BUFFEROVERRUN 0x0C
108	#define TD_BUFFERUNDERRUN 0x0D
109	#define TD_NOTACCESSED 0x0F
110
111
112	#define MAXPSW 1
113
114	struct td {
115	__u32 hwINFO;
116	__u32 hwCBP; /* Current Buffer Pointer */
117	__u32 hwNextTD; /* Next TD Pointer */
118	__u32 hwBE; /* Memory Buffer End Pointer */
119
120	__u16 hwPSW[MAXPSW];
121	__u8 unused;
122	__u8 index;
123	struct ed *ed;
124	struct td *next_dl_td;
125	struct usb_device *usb_dev;
126	int transfer_len;
127	__u32 data;
128
129	__u32 unused2[2];
130	} __attribute((aligned(32)));
131	typedef struct td td_t;
132
133	#define OHCI_ED_SKIP (1 << 14)
134
135	/*
136	* The HCCA (Host Controller Communications Area) is a 256 byte
137	* structure defined in the OHCI spec. that the host controller is
138	* told the base address of. It must be 256-byte aligned.
139	*/
140
141	#define NUM_INTS 32 /* part of the OHCI standard */
142	struct ohci_hcca {
143	__u32 int_table[NUM_INTS]; /* Interrupt ED table */
144	__u16 frame_no; /* current frame number */
145	__u16 pad1; /* set to 0 on each frame_no change */
146	__u32 done_head; /* info returned for an interrupt */
147	u8 reserved_for_hc[116];
148	} __attribute((aligned(256)));
149
150
151	/*
152	* Maximum number of root hub ports.
153	*/
154	#define MAX_ROOT_PORTS 3 /* maximum OHCI root hub ports */
155
156	/*
157	* This is the structure of the OHCI controller's memory mapped I/O
158	* region. This is Memory Mapped I/O. You must use the readl() and
159	* writel() macros defined in asm/io.h to access these!!
160	*/
161	struct ohci_regs {
162	/* control and status registers */
163	__u32 revision;
164	__u32 control;
165	__u32 cmdstatus;
166	__u32 intrstatus;
167	__u32 intrenable;
168	__u32 intrdisable;
169	/* memory pointers */
170	__u32 hcca;
171	__u32 ed_periodcurrent;
172	__u32 ed_controlhead;
173	__u32 ed_controlcurrent;
174	__u32 ed_bulkhead;
175	__u32 ed_bulkcurrent;
176	__u32 donehead;
177	/* frame counters */
178	__u32 fminterval;
179	__u32 fmremaining;
180	__u32 fmnumber;
181	__u32 periodicstart;
182	__u32 lsthresh;
183	/* Root hub ports */
184	struct ohci_roothub_regs {
185	__u32 a;
186	__u32 b;
187	__u32 status;
188	__u32 portstatus[MAX_ROOT_PORTS];
189	} roothub;
190	} __attribute((aligned(32)));
191
192
193	/* OHCI CONTROL AND STATUS REGISTER MASKS */
194
195	/*
196	* HcControl (control) register masks
197	*/
198	#define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */
199	#define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */
200	#define OHCI_CTRL_IE (1 << 3) /* isochronous enable */
201	#define OHCI_CTRL_CLE (1 << 4) /* control list enable */
202	#define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */
203	#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
204	#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
205	#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
206	#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
207
208	/* pre-shifted values for HCFS */
209	# define OHCI_USB_RESET (0 << 6)
210	# define OHCI_USB_RESUME (1 << 6)
211	# define OHCI_USB_OPER (2 << 6)
212	# define OHCI_USB_SUSPEND (3 << 6)
213
214	/*
215	* HcCommandStatus (cmdstatus) register masks
216	*/
217	#define OHCI_HCR (1 << 0) /* host controller reset */
218	#define OHCI_CLF (1 << 1) /* control list filled */
219	#define OHCI_BLF (1 << 2) /* bulk list filled */
220	#define OHCI_OCR (1 << 3) /* ownership change request */
221	#define OHCI_SOC (3 << 16) /* scheduling overrun count */
222
223	/*
224	* masks used with interrupt registers:
225	* HcInterruptStatus (intrstatus)
226	* HcInterruptEnable (intrenable)
227	* HcInterruptDisable (intrdisable)
228	*/
229	#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
230	#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
231	#define OHCI_INTR_SF (1 << 2) /* start frame */
232	#define OHCI_INTR_RD (1 << 3) /* resume detect */
233	#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
234	#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
235	#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
236	#define OHCI_INTR_OC (1 << 30) /* ownership change */
237	#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
238
239
240	/* Virtual Root HUB */
241	struct virt_root_hub {
242	int devnum; /* Address of Root Hub endpoint */
243	void dev; / was urb */
244	void *int_addr;
245	int send;
246	int interval;
247	};
248
249	/* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */
250
251	/* destination of request */
252	#define RH_INTERFACE 0x01
253	#define RH_ENDPOINT 0x02
254	#define RH_OTHER 0x03
255
256	#define RH_CLASS 0x20
257	#define RH_VENDOR 0x40
258
259	/* Requests: bRequest << 8 \| bmRequestType */
260	#define RH_GET_STATUS 0x0080
261	#define RH_CLEAR_FEATURE 0x0100
262	#define RH_SET_FEATURE 0x0300
263	#define RH_SET_ADDRESS 0x0500
264	#define RH_GET_DESCRIPTOR 0x0680
265	#define RH_SET_DESCRIPTOR 0x0700
266	#define RH_GET_CONFIGURATION 0x0880
267	#define RH_SET_CONFIGURATION 0x0900
268	#define RH_GET_STATE 0x0280
269	#define RH_GET_INTERFACE 0x0A80
270	#define RH_SET_INTERFACE 0x0B00
271	#define RH_SYNC_FRAME 0x0C80
272	/* Our Vendor Specific Request */
273	#define RH_SET_EP 0x2000
274
275
276	/* Hub port features */
277	#define RH_PORT_CONNECTION 0x00
278	#define RH_PORT_ENABLE 0x01
279	#define RH_PORT_SUSPEND 0x02
280	#define RH_PORT_OVER_CURRENT 0x03
281	#define RH_PORT_RESET 0x04
282	#define RH_PORT_POWER 0x08
283	#define RH_PORT_LOW_SPEED 0x09
284
285	#define RH_C_PORT_CONNECTION 0x10
286	#define RH_C_PORT_ENABLE 0x11
287	#define RH_C_PORT_SUSPEND 0x12
288	#define RH_C_PORT_OVER_CURRENT 0x13
289	#define RH_C_PORT_RESET 0x14
290
291	/* Hub features */
292	#define RH_C_HUB_LOCAL_POWER 0x00
293	#define RH_C_HUB_OVER_CURRENT 0x01
294
295	#define RH_DEVICE_REMOTE_WAKEUP 0x00
296	#define RH_ENDPOINT_STALL 0x01
297
298	#define RH_ACK 0x01
299	#define RH_REQ_ERR -1
300	#define RH_NACK 0x00
301
302
303	/* OHCI ROOT HUB REGISTER MASKS */
304
305	/* roothub.portstatus [i] bits */
306	#define RH_PS_CCS 0x00000001 /* current connect status */
307	#define RH_PS_PES 0x00000002 /* port enable status*/
308	#define RH_PS_PSS 0x00000004 /* port suspend status */
309	#define RH_PS_POCI 0x00000008 /* port over current indicator */
310	#define RH_PS_PRS 0x00000010 /* port reset status */
311	#define RH_PS_PPS 0x00000100 /* port power status */
312	#define RH_PS_LSDA 0x00000200 /* low speed device attached */
313	#define RH_PS_CSC 0x00010000 /* connect status change */
314	#define RH_PS_PESC 0x00020000 /* port enable status change */
315	#define RH_PS_PSSC 0x00040000 /* port suspend status change */
316	#define RH_PS_OCIC 0x00080000 /* over current indicator change */
317	#define RH_PS_PRSC 0x00100000 /* port reset status change */
318
319	/* roothub.status bits */
320	#define RH_HS_LPS 0x00000001 /* local power status */
321	#define RH_HS_OCI 0x00000002 /* over current indicator */
322	#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
323	#define RH_HS_LPSC 0x00010000 /* local power status change */
324	#define RH_HS_OCIC 0x00020000 /* over current indicator change */
325	#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
326
327	/* roothub.b masks */
328	#define RH_B_DR 0x0000ffff /* device removable flags */
329	#define RH_B_PPCM 0xffff0000 /* port power control mask */
330
331	/* roothub.a masks */
332	#define RH_A_NDP (0xff << 0) /* number of downstream ports */
333	#define RH_A_PSM (1 << 8) /* power switching mode */
334	#define RH_A_NPS (1 << 9) /* no power switching */
335	#define RH_A_DT (1 << 10) /* device type (mbz) */
336	#define RH_A_OCPM (1 << 11) /* over current protection mode */
337	#define RH_A_NOCP (1 << 12) /* no over current protection */
338	#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
339
340	/* urb */
341	#define N_URB_TD 48
342	typedef struct
343	{
344	ed_t *ed;
345	__u16 length; /* number of tds associated with this request */
346	__u16 td_cnt; /* number of tds already serviced */
347	int state;
348	unsigned long pipe;
349	int actual_length;
350	td_t td[N_URB_TD]; / list pointer to all corresponding TDs associated with this request */
351	} urb_priv_t;
352	#define URB_DEL 1
353
354	/*
355	* This is the full ohci controller description
356	*
357	* Note how the "proper" USB information is just
358	* a subset of what the full implementation needs. (Linus)
359	*/
360
361
362	typedef struct ohci {
363	struct ohci_hcca hcca; / hcca */
364	/dma_addr_t hcca_dma;/
365
366	int irq;
367	int disabled; /* e.g. got a UE, we're hung */
368	int sleeping;
369	unsigned long flags; /* for HC bugs */
370
371	struct ohci_regs regs; / OHCI controller's memory */
372
373	ed_t ed_rm_list[2]; / lists of all endpoints to be removed */
374	ed_t ed_bulktail; / last endpoint of bulk list */
375	ed_t ed_controltail; / last endpoint of control list */
376	int intrstatus;
377	__u32 hc_control; /* copy of the hc control reg */
378	struct usb_device *dev[32];
379	struct virt_root_hub rh;
380
381	const char *slot_name;
382	} ohci_t;
383
384	#define NUM_EDS 8 /* num of preallocated endpoint descriptors */
385
386	struct ohci_device {
387	ed_t ed[NUM_EDS];
388	int ed_cnt;
389	};
390
391	/* hcd */
392	/* endpoint */
393	static int ep_link(ohci_t * ohci, ed_t * ed);
394	static int ep_unlink(ohci_t * ohci, ed_t * ed);
395	static ed_t * ep_add_ed(struct usb_device * usb_dev, unsigned long pipe);
396
397	/-------------------------------------------------------------------------/
398
399	/* we need more TDs than EDs */
400	#define NUM_TD 64
401
402	/* +1 so we can align the storage */
403	td_t gtd[NUM_TD+1];
404	/* pointers to aligned storage */
405	td_t *ptd;
406
407	/* TDs ... */
408	static inline struct td *
409	td_alloc (struct usb_device *usb_dev)
410	{
411	int i;
412	struct td *td;
413
414	td = NULL;
415	for (i = 0; i < NUM_TD; i++)
416	{
417	if (ptd[i].usb_dev == NULL)
418	{
419	td = &ptd[i];
420	td->usb_dev = usb_dev;
421	break;
422	}
423	}
424
425	return td;
426	}
427
428	static inline void
429	ed_free (struct ed *ed)
430	{
431	ed->usb_dev = NULL;
432	}