hubio.h

linux-2.4.29操作系统的源码

/* PIO Read address Table Entries */
#define IIO_IPCA	0x400300	/* PRB Counter adjust */
#define IIO_NUM_PRTES	8		/* Total number of PRB table entries */
#define IIO_PRTE_0	0x400308	/* PIO Read address table entry 0 */
#define IIO_PRTE(_x)	(IIO_PRTE_0 + (8 * (_x)))
#define	IIO_WIDPRTE(x)	IIO_PRTE(((x) - 8)) /* widget ID to its PRTE num */
#define IIO_IPDR	0x400388	/* PIO table entry deallocation */
#define IIO_ICDR	0x400390	/* CRB Entry Deallocation */
#define IIO_IFDR	0x400398	/* IOQ FIFO Depth */
#define IIO_IIAP	0x4003a0	/* IIQ Arbitration Parameters */
#define IIO_IMMR	IIO_IIAP
#define IIO_ICMR	0x4003a8	/* CRB Managment Register */
#define IIO_ICCR	0x4003b0	/* CRB Control Register */
#define IIO_ICTO	0x4003b8	/* CRB Time Out Register */
#define IIO_ICTP	0x4003c0	/* CRB Time Out Prescalar */


/*
 * ICMR register fields
 */
#define IIO_ICMR_PC_VLD_SHFT	36
#define IIO_ICMR_PC_VLD_MASK	(0x7fffUL << IIO_ICMR_PC_VLD_SHFT)

#define IIO_ICMR_CRB_VLD_SHFT	20
#define IIO_ICMR_CRB_VLD_MASK	(0x7fffUL << IIO_ICMR_CRB_VLD_SHFT)

#define IIO_ICMR_FC_CNT_SHFT	16
#define IIO_ICMR_FC_CNT_MASK	(0xf << IIO_ICMR_FC_CNT_SHFT)

#define IIO_ICMR_C_CNT_SHFT	4
#define IIO_ICMR_C_CNT_MASK	(0xf << IIO_ICMR_C_CNT_SHFT)

#define IIO_ICMR_P_CNT_SHFT	0
#define IIO_ICMR_P_CNT_MASK	(0xf << IIO_ICMR_P_CNT_SHFT)

#define IIO_ICMR_PRECISE	(1UL << 52)
#define IIO_ICMR_CLR_RPPD	(1UL << 13)
#define IIO_ICMR_CLR_RQPD	(1UL << 12)

/*
 * IIO PIO Deallocation register field masks : (IIO_IPDR)
 */
#define	IIO_IPDR_PND	(1 << 4)

/*
 * IIO CRB deallocation register field masks: (IIO_ICDR)
 */
#define	IIO_ICDR_PND	(1 << 4)

/*
 * IIO CRB control register Fields: IIO_ICCR
 */
#define	IIO_ICCR_PENDING	(0x10000)
#define	IIO_ICCR_CMD_MASK	(0xFF)
#define	IIO_ICCR_CMD_SHFT	(7)
#define	IIO_ICCR_CMD_NOP	(0x0)	/* No Op */
#define	IIO_ICCR_CMD_WAKE	(0x100) /* Reactivate CRB entry and process */
#define	IIO_ICCR_CMD_TIMEOUT	(0x200)	/* Make CRB timeout & mark invalid */
#define	IIO_ICCR_CMD_EJECT	(0x400)	/* Contents of entry written to memory
					 * via a WB
					 */
#define	IIO_ICCR_CMD_FLUSH	(0x800)

/*
 * CRB manipulation macros
 *	The CRB macros are slightly complicated, since there are up to
 * 	four registers associated with each CRB entry.
 */
#define IIO_NUM_CRBS		15	/* Number of CRBs */
#define IIO_NUM_NORMAL_CRBS     12	/* Number of regular CRB entries */
#define IIO_NUM_PC_CRBS 	4	/* Number of partial cache CRBs */
#define IIO_ICRB_OFFSET		8
#define IIO_ICRB_0		0x400400
/* XXX - This is now tuneable:
	#define IIO_FIRST_PC_ENTRY 12
 */

#define IIO_ICRB_A(_x)	(IIO_ICRB_0 + (4 * IIO_ICRB_OFFSET * (_x)))
#define IIO_ICRB_B(_x)  (IIO_ICRB_A(_x) + 1*IIO_ICRB_OFFSET)
#define IIO_ICRB_C(_x)	(IIO_ICRB_A(_x) + 2*IIO_ICRB_OFFSET)
#define IIO_ICRB_D(_x)  (IIO_ICRB_A(_x) + 3*IIO_ICRB_OFFSET)

/* XXX - IBUE register coming for Hub 2 */

/*
 *
 * CRB Register description.
 *
 * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
 * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
 * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
 * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
 * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
 *
 * Many of the fields in CRB are status bits used by hardware
 * for implementation of the protocol. It's very dangerous to
 * mess around with the CRB registers.
 *
 * It's OK to read the CRB registers and try to make sense out of the
 * fields in CRB.
 *
 * Updating CRB requires all activities in Hub IIO to be quiesced.
 * otherwise, a write to CRB could corrupt other CRB entries.
 * CRBs are here only as a back door peek to hub IIO's status.
 * Quiescing implies  no dmas no PIOs
 * either directly from the cpu or from sn0net.
 * this is not something that can be done easily. So, AVOID updating
 * CRBs.
 */

/*
 * Fields in CRB Register A
 */
#ifndef __ASSEMBLY__
typedef union icrba_u {
	u64	reg_value;
	struct {
		u64 	resvd: 	6,
			stall_bte0: 1,	/* Stall BTE 0 */
			stall_bte1: 1,	/* Stall BTE 1 */
			error:	1,	/* CRB has an error	*/
			ecode:	3,	/* Error Code 		*/
			lnetuce: 1,	/* SN0net Uncorrectable error */
			mark:	1,	/* CRB Has been marked 	*/
			xerr:	1,	/* Error bit set in xtalk header */
			sidn:	4,	/* SIDN field from xtalk	*/
			tnum: 	5,	/* TNUM field in xtalk		*/
			addr:	38,	/* Address of request	*/
			valid:	1,	/* Valid status		*/
			iow:	1;	/* IO Write operation	*/
	} icrba_fields_s;
} icrba_t;

/* This is an alternate typedef for the HUB1 CRB A in order to allow
   runtime selection of the format based on the REV_ID field of the
   NI_STATUS_REV_ID register. */
typedef union h1_icrba_u {
	u64	reg_value;

	struct {
		u64 	resvd: 	6,
			unused:	1,	/* Unused but RW!!	*/
			error:	1,	/* CRB has an error	*/
			ecode:	4,	/* Error Code 		*/
			lnetuce: 1,	/* SN0net Uncorrectable error */
			mark:	1,	/* CRB Has been marked 	*/
			xerr:	1,	/* Error bit set in xtalk header */
			sidn:	4,	/* SIDN field from xtalk	*/
			tnum: 	5,	/* TNUM field in xtalk		*/
			addr:	38,	/* Address of request	*/
			valid:	1,	/* Valid status		*/
			iow:	1;	/* IO Write operation	*/
	} h1_icrba_fields_s;
} h1_icrba_t;

/* XXX - Is this still right?  Check the spec. */
#define ICRBN_A_CERR_SHFT	54
#define ICRBN_A_ERR_MASK	0x3ff

/*
 * Easy access macros.
 */
#define	a_error		icrba_fields_s.error
#define	a_ecode		icrba_fields_s.ecode
#define	a_lnetuce	icrba_fields_s.lnetuce
#define	a_mark		icrba_fields_s.mark
#define	a_xerr		icrba_fields_s.xerr
#define	a_sidn		icrba_fields_s.sidn
#define	a_tnum		icrba_fields_s.tnum
#define	a_addr		icrba_fields_s.addr
#define	a_valid		icrba_fields_s.valid
#define	a_iow		icrba_fields_s.iow

#endif /* !__ASSEMBLY__ */

#define	IIO_ICRB_ADDR_SHFT	2	/* Shift to get proper address */

/*
 * values for "ecode" field
 */
#define	IIO_ICRB_ECODE_DERR	0	/* Directory error due to IIO access */
#define	IIO_ICRB_ECODE_PERR	1	/* Poison error on IO access */
#define	IIO_ICRB_ECODE_WERR	2	/* Write error by IIO access
					 * e.g. WINV to a Read only line.
					 */
#define	IIO_ICRB_ECODE_AERR	3	/* Access error caused by IIO access */
#define	IIO_ICRB_ECODE_PWERR	4	/* Error on partial write	*/
#define	IIO_ICRB_ECODE_PRERR	5	/* Error on partial read	*/
#define	IIO_ICRB_ECODE_TOUT	6	/* CRB timeout before deallocating */
#define	IIO_ICRB_ECODE_XTERR	7	/* Incoming xtalk pkt had error bit */



/*
 * Fields in CRB Register B
 */
#ifndef __ASSEMBLY__
typedef union icrbb_u {
	u64	reg_value;
	struct {
	    u64	rsvd1:	5,
		btenum:	1,	/* BTE to which entry belongs to */
		cohtrans: 1,	/* Coherent transaction	*/
		xtsize:	2,	/* Xtalk operation size
				 * 0: Double Word
				 * 1: 32 Bytes.
				 * 2: 128 Bytes,
				 * 3: Reserved.
				 */
		srcnode: 9,	/* Source Node ID		*/
		srcinit: 2,	/* Source Initiator:
				 * See below for field values.
				 */
		useold:	1,	/* Use OLD command for processing */
		imsgtype: 2,	/* Incoming message type
				 * see below for field values
				 */
		imsg: 	8,	/* Incoming message 	*/
		initator: 3,	/* Initiator of original request
				 * See below for field values.
				 */
		reqtype: 5,	/* Identifies type of request
				 * See below for field values.
				 */
		rsvd2:	7,
		ackcnt:	11,	/* Invalidate ack count	*/
		resp:	1,	/* data response  given to processor */
		ack: 	1,	/* indicates data ack received 	*/
		hold:	1,	/* entry is gathering inval acks */
		wb_pend:1,	/* waiting for writeback to complete */
		intvn: 	1,	/* Intervention */
		stall_ib: 1,	/* Stall Ibuf (from crosstalk) */
		stall_intr: 1;	/* Stall internal interrupts */
	} icrbb_field_s;
} icrbb_t;

/* This is an alternate typedef for the HUB1 CRB B in order to allow
   runtime selection of the format based on the REV_ID field of the
   NI_STATUS_REV_ID register. */
typedef union h1_icrbb_u {
	u64	reg_value;
	struct {
		u64	rsvd1:	5,
			btenum:	1,	/* BTE to which entry belongs to */
			cohtrans: 1,	/* Coherent transaction	*/
			xtsize:	2,	/* Xtalk operation size
					 * 0: Double Word
					 * 1: 32 Bytes.
					 * 2: 128 Bytes,
					 * 3: Reserved.
					 */
			srcnode: 9,	/* Source Node ID		*/
			srcinit: 2,	/* Source Initiator:
					 * See below for field values.
					 */
			useold:	1,	/* Use OLD command for processing */
			imsgtype: 2,	/* Incoming message type
					 * see below for field values
					 */
			imsg: 	8,	/* Incoming message 	*/
			initator: 3,	/* Initiator of original request
					 * See below for field values.
					 */
			rsvd2: 	1,
			pcache: 1,	/* entry belongs to partial cache */
			reqtype: 5,	/* Identifies type of request
					 * See below for field values.
					 */
			stl_ib:	1,	/* stall Ibus coming from xtalk	*/
			stl_intr: 1,	/* Stall internal interrupts */
			stl_bte0: 1,	/* Stall BTE 0 	*/
			stl_bte1: 1,	/* Stall BTE 1	*/
			intrvn:	1,	/* Req was target of intervention */
			ackcnt:	11,	/* Invalidate ack count	*/
			resp:	1,	/* data response  given to processor */
			ack: 	1,	/* indicates data ack received 	*/
			hold:	1,	/* entry is gathering inval acks */
			wb_pend:1,	/* waiting for writeback to complete */
			sleep: 	1,	/* xtalk req sleeping till IO-sync */
			pnd_reply: 1,	/* replies not issed due to IOQ full */
			pnd_req: 1;	/* reqs not issued due to IOQ full */
	} h1_icrbb_field_s;
} h1_icrbb_t;


#define	b_imsgtype	icrbb_field_s.imsgtype
#define	b_btenum	icrbb_field_s.btenum
#define	b_cohtrans	icrbb_field_s.cohtrans
#define	b_xtsize	icrbb_field_s.xtsize
#define	b_srcnode	icrbb_field_s.srcnode
#define	b_srcinit	icrbb_field_s.srcinit
#define	b_imsgtype	icrbb_field_s.imsgtype
#define	b_imsg		icrbb_field_s.imsg
#define	b_initiator	icrbb_field_s.initiator

#endif /* !__ASSEMBLY__ */

/*
 * values for field xtsize
 */
#define	IIO_ICRB_XTSIZE_DW	0	/* Xtalk operation size is 8 bytes  */
#define	IIO_ICRB_XTSIZE_32	1	/* Xtalk operation size is 32 bytes */
#define	IIO_ICRB_XTSIZE_128	2	/* Xtalk operation size is 128 bytes */

/*
 * values for field srcinit
 */
#define	IIO_ICRB_PROC0		0	/* Source of request is Proc 0 */
#define	IIO_ICRB_PROC1		1	/* Source of request is Proc 1 */
#define	IIO_ICRB_GB_REQ		2	/* Source is Guranteed BW request */
#define	IIO_ICRB_IO_REQ		3	/* Source is Normal IO request	*/

/*
 * Values for field imsgtype
 */
#define	IIO_ICRB_IMSGT_XTALK	0	/* Incoming Meessage from Xtalk	*/
#define	IIO_ICRB_IMSGT_BTE	1	/* Incoming message from BTE 	*/
#define	IIO_ICRB_IMSGT_SN0NET	2	/* Incoming message from SN0 net */
#define	IIO_ICRB_IMSGT_CRB	3	/* Incoming message from CRB ???  */

/*
 * values for field initiator.
 */
#define	IIO_ICRB_INIT_XTALK	0	/* Message originated in xtalk	*/
#define	IIO_ICRB_INIT_BTE0	0x1	/* Message originated in BTE 0	*/
#define	IIO_ICRB_INIT_SN0NET	0x2	/* Message originated in SN0net */
#define	IIO_ICRB_INIT_CRB	0x3	/* Message originated in CRB ? 	*/
#define	IIO_ICRB_INIT_BTE1	0x5	/* MEssage originated in BTE 1	*/