sn/sn0/hubio.h

8  * Copyright (C) 1992 - 1997, 1999 Silicon Graphics, Inc.
15  * Hub I/O interface registers
17  * All registers in this file are subject to change until Hub chip tapeout.
57 #define IIO_BTE_OFF_1	IIO_IBLS_1 - IIO_IBLS_0 /* Offset from base to BTE 1 */
61 #define BTEOFF_SRC		(IIO_BTE_SRC_0 - IIO_BTE_STAT_0)
62 #define BTEOFF_DEST		(IIO_BTE_DEST_0 - IIO_BTE_STAT_0)
63 #define BTEOFF_CTRL		(IIO_BTE_CTRL_0 - IIO_BTE_STAT_0)
64 #define BTEOFF_NOTIFY		(IIO_BTE_NOTIFY_0 - IIO_BTE_STAT_0)
65 #define BTEOFF_INT		(IIO_BTE_INT_0 - IIO_BTE_STAT_0)
86 #define IIO_WSTAT_ECRAZY	(1ULL << 32)	/* Hub gone crazy */
87 #define IIO_WSTAT_TXRETRY	(1ULL << 9)	/* Hub Tx Retry timeout */
119 #define IIO_IGFX_W_NUM_MASK	((1<<IIO_IGFX_W_NUM_BITS)-1)
122 #define IIO_IGFX_N_NUM_MASK	((1<<IIO_IGFX_N_NUM_BITS)-1)
125 #define IIO_IGFX_P_NUM_MASK	((1<<IIO_IGFX_P_NUM_BITS)-1)
128 #define IIO_IGFX_VLD_MASK	((1<<IIO_IGFX_VLD_BITS)-1)
158  * As a permanent workaround for a bug in the PI side of the hub, we've
161 #define HUB_NUM_BIG_WINDOW	IIO_NUM_ITTES - 1
179 			wid_part_num:	16,	/* the widget type: hub=c101 */
253 			iiwa_wxiac:	 8,	/* hub wid access bits */
255 			iiwa_w0iac:	 1;	/* hub wid0 access */
283 /* io_perf_cnt is to extract the count from the hub registers. Due to
335 #define IIO_WIDPRTE(x)	IIO_PRTE(((x) - 8)) /* widget ID to its PRTE num */
403 /* XXX - This is now tuneable:
412 /* XXX - IBUE register coming for Hub 2 */
431  * Updating CRB requires all activities in Hub IIO to be quiesced.
433  * CRBs are here only as a back door peek to hub IIO's status.
485 /* XXX - Is this still right?  Check the spec. */
594 			sleep:	1,	/* xtalk req sleeping till IO-sync */
648 /* XXX - Need to fix this for Hub 2 */
661 #define IIO_ICRB_REQ_PTPWR	15	/* Request is Peer to peer	*/
814  * Hub IIO PRB Register format.
878 		rsvd1: 12,  /* 53-42: reserved			*/
880 		sidn:	4,  /* 40-37: SIDN field of xtalk rqst	*/
881 		tnum:	5,  /* 36-32: TNUM of xtalk request	*/
885 		size:	2,  /* 28-27: size of xtalk request	*/
886 		excl:	4,  /* 26-23: exclusive bit(s)		*/
887 		stall:	3,  /* 22-20: stall (xtalk, bte 0/1)	*/
893 		ack_cnt:11, /* 14-04: counter of invalidate acks*/
894 		tscaler:4;  /* 03-00: Timeout prescaler		*/
946  * Miscellaneous hub constants
949 /* Number of widgets supported by hub */
958  * Get a hub's widget id from widget control register
964  * Number of credits Hub widget has while sending req/response to