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path: root/include/asm-mips/sn/sn0/hubpi.h
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/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Derived from IRIX <sys/SN/SN0/hubpi.h>, revision 1.28.
 *
 * Copyright (C) 1992 - 1997, 1999 Silicon Graphics, Inc.
 * Copyright (C) 1999 by Ralf Baechle
 */
#ifndef	_ASM_SN_SN0_HUBPI_H
#define	_ASM_SN_SN0_HUBPI_H

#include <linux/types.h>

/*
 * Hub I/O interface registers
 *
 * All registers in this file are subject to change until Hub chip tapeout.
 * All register "addresses" are actually offsets.  Use the LOCAL_HUB
 * or REMOTE_HUB macros to synthesize an actual address
 */

#define PI_BASE			0x000000

/* General protection and control registers */

#define PI_CPU_PROTECT		0x000000 /* CPU Protection 		    */
#define PI_PROT_OVERRD		0x000008 /* Clear CPU Protection bit 	    */
#define	PI_IO_PROTECT		0x000010 /* Interrupt Pending Protection    */
#define PI_REGION_PRESENT	0x000018 /* Indicates whether region exists */
#define PI_CPU_NUM		0x000020 /* CPU Number ID 		    */
#define PI_CALIAS_SIZE		0x000028 /* Cached Alias Size 		    */
#define PI_MAX_CRB_TIMEOUT	0x000030 /* Maximum Timeout for CRB 	    */
#define PI_CRB_SFACTOR		0x000038 /* Scale factor for CRB timeout    */

/* CALIAS values */
#define PI_CALIAS_SIZE_0	0
#define PI_CALIAS_SIZE_4K	1
#define PI_CALIAS_SIZE_8K	2
#define PI_CALIAS_SIZE_16K	3
#define PI_CALIAS_SIZE_32K	4
#define PI_CALIAS_SIZE_64K	5
#define PI_CALIAS_SIZE_128K	6
#define PI_CALIAS_SIZE_256K	7
#define PI_CALIAS_SIZE_512K	8
#define PI_CALIAS_SIZE_1M	9
#define PI_CALIAS_SIZE_2M	10
#define PI_CALIAS_SIZE_4M	11
#define PI_CALIAS_SIZE_8M	12
#define PI_CALIAS_SIZE_16M	13
#define PI_CALIAS_SIZE_32M	14
#define PI_CALIAS_SIZE_64M	15

/* Processor control and status checking */

#define PI_CPU_PRESENT_A	0x000040 /* CPU Present A 		    */
#define PI_CPU_PRESENT_B	0x000048 /* CPU Present B 		    */
#define PI_CPU_ENABLE_A		0x000050 /* CPU Enable A 		    */
#define PI_CPU_ENABLE_B		0x000058 /* CPU Enable B 		    */
#define PI_REPLY_LEVEL		0x000060 /* Reply Level		 	    */
#define PI_HARDRESET_BIT	0x020068 /* Bit cleared by s/w on SR	    */
#define PI_NMI_A		0x000070 /* NMI to CPU A 		    */
#define PI_NMI_B		0x000078 /* NMI to CPU B 		    */
#define PI_NMI_OFFSET		(PI_NMI_B - PI_NMI_A)
#define PI_SOFTRESET		0x000080 /* Softreset (to both CPUs) 	    */

/* Regular Interrupt register checking.  */

#define PI_INT_PEND_MOD		0x000090 /* Write to set pending ints	    */
#define PI_INT_PEND0		0x000098 /* Read to get pending ints 	    */
#define PI_INT_PEND1		0x0000a0 /* Read to get pending ints 	    */
#define PI_INT_MASK0_A		0x0000a8 /* Interrupt Mask 0 for CPU A 	    */
#define PI_INT_MASK1_A		0x0000b0 /* Interrupt Mask 1 for CPU A 	    */
#define PI_INT_MASK0_B		0x0000b8 /* Interrupt Mask 0 for CPU B 	    */
#define PI_INT_MASK1_B		0x0000c0 /* Interrupt Mask 1 for CPU B 	    */

#define PI_INT_MASK_OFFSET	0x10	 /* Offset from A to B 		    */

/* Crosscall interrupts */

#define PI_CC_PEND_SET_A	0x0000c8 /* CC Interrupt Pending Set, CPU A */
#define PI_CC_PEND_SET_B	0x0000d0 /* CC Interrupt Pending Set, CPU B */
#define PI_CC_PEND_CLR_A	0x0000d8 /* CC Interrupt Pending Clr, CPU A */
#define PI_CC_PEND_CLR_B	0x0000e0 /* CC Interrupt Pending Clr, CPU B */
#define PI_CC_MASK		0x0000e8 /* CC Interrupt mask 		    */

#define PI_INT_SET_OFFSET	0x08	 /* Offset from A to B 		    */

/* Realtime Counter and Profiler control registers */

#define PI_RT_COUNT		0x030100 /* Real Time Counter 		    */
#define PI_RT_COMPARE_A		0x000108 /* Real Time Compare A 	    */
#define PI_RT_COMPARE_B		0x000110 /* Real Time Compare B 	    */
#define PI_PROFILE_COMPARE	0x000118 /* L5 int to both cpus when == RTC */
#define PI_RT_PEND_A		0x000120 /* Set if RT int for A pending     */
#define PI_RT_PEND_B		0x000128 /* Set if RT int for B pending     */
#define PI_PROF_PEND_A		0x000130 /* Set if Prof int for A pending   */
#define PI_PROF_PEND_B		0x000138 /* Set if Prof int for B pending   */
#define PI_RT_EN_A		0x000140 /* RT int for CPU A enable 	    */
#define PI_RT_EN_B		0x000148 /* RT int for CPU B enable 	    */
#define PI_PROF_EN_A		0x000150 /* PROF int for CPU A enable 	    */
#define PI_PROF_EN_B		0x000158 /* PROF int for CPU B enable 	    */
#define PI_RT_LOCAL_CTRL	0x000160 /* RT control register 	    */
#define PI_RT_FILTER_CTRL	0x000168 /* GCLK Filter control register    */

#define PI_COUNT_OFFSET		0x08	 /* A to B offset for all counts    */

/* Built-In Self Test support */

#define PI_BIST_WRITE_DATA	0x000200 /* BIST write data 		    */
#define PI_BIST_READ_DATA	0x000208 /* BIST read data 		    */
#define PI_BIST_COUNT_TARG	0x000210 /* BIST Count and Target 	    */
#define PI_BIST_READY		0x000218 /* BIST Ready indicator 	    */
#define PI_BIST_SHIFT_LOAD	0x000220 /* BIST control 		    */
#define PI_BIST_SHIFT_UNLOAD	0x000228 /* BIST control 		    */
#define PI_BIST_ENTER_RUN	0x000230 /* BIST control 		    */

/* Graphics control registers */

#define PI_GFX_PAGE_A		0x000300 /* Graphics page A 		    */
#define PI_GFX_CREDIT_CNTR_A	0x000308 /* Graphics credit counter A 	    */
#define PI_GFX_BIAS_A		0x000310 /* Graphics bias A 		    */
#define PI_GFX_INT_CNTR_A	0x000318 /* Graphics interrupt counter A    */
#define PI_GFX_INT_CMP_A	0x000320 /* Graphics interrupt comparator A */
#define PI_GFX_PAGE_B		0x000328 /* Graphics page B 		    */
#define PI_GFX_CREDIT_CNTR_B	0x000330 /* Graphics credit counter B 	    */
#define PI_GFX_BIAS_B		0x000338 /* Graphics bias B 		    */
#define PI_GFX_INT_CNTR_B	0x000340 /* Graphics interrupt counter B    */
#define PI_GFX_INT_CMP_B	0x000348 /* Graphics interrupt comparator B */

#define PI_GFX_OFFSET		(PI_GFX_PAGE_B - PI_GFX_PAGE_A)
#define PI_GFX_PAGE_ENABLE	0x0000010000000000LL

/* Error and timeout registers */
#define PI_ERR_INT_PEND		0x000400 /* Error Interrupt Pending	    */
#define PI_ERR_INT_MASK_A	0x000408 /* Error Interrupt mask for CPU A  */
#define PI_ERR_INT_MASK_B	0x000410 /* Error Interrupt mask for CPU B  */
#define PI_ERR_STACK_ADDR_A	0x000418 /* Error stack address for CPU A   */
#define PI_ERR_STACK_ADDR_B	0x000420 /* Error stack address for CPU B   */
#define PI_ERR_STACK_SIZE	0x000428 /* Error Stack Size 		    */
#define PI_ERR_STATUS0_A	0x000430 /* Error Status 0A 		    */
#define PI_ERR_STATUS0_A_RCLR	0x000438 /* Error Status 0A clear on read   */
#define PI_ERR_STATUS1_A	0x000440 /* Error Status 1A 		    */
#define PI_ERR_STATUS1_A_RCLR	0x000448 /* Error Status 1A clear on read   */
#define PI_ERR_STATUS0_B	0x000450 /* Error Status 0B 		    */
#define PI_ERR_STATUS0_B_RCLR	0x000458 /* Error Status 0B clear on read   */
#define PI_ERR_STATUS1_B	0x000460 /* Error Status 1B 		    */
#define PI_ERR_STATUS1_B_RCLR	0x000468 /* Error Status 1B clear on read   */
#define PI_SPOOL_CMP_A		0x000470 /* Spool compare for CPU A 	    */
#define PI_SPOOL_CMP_B		0x000478 /* Spool compare for CPU B 	    */
#define PI_CRB_TIMEOUT_A	0x000480 /* Timed out CRB entries for A     */
#define PI_CRB_TIMEOUT_B	0x000488 /* Timed out CRB entries for B     */
#define PI_SYSAD_ERRCHK_EN	0x000490 /* Enables SYSAD error checking    */
#define PI_BAD_CHECK_BIT_A	0x000498 /* Force SYSAD check bit error     */
#define PI_BAD_CHECK_BIT_B	0x0004a0 /* Force SYSAD check bit error     */
#define PI_NACK_CNT_A		0x0004a8 /* Consecutive NACK counter 	    */
#define PI_NACK_CNT_B		0x0004b0 /* 	"	" for CPU B 	    */
#define PI_NACK_CMP		0x0004b8 /* NACK count compare		    */
#define PI_STACKADDR_OFFSET	(PI_ERR_STACK_ADDR_B - PI_ERR_STACK_ADDR_A)
#define PI_ERRSTAT_OFFSET	(PI_ERR_STATUS0_B - PI_ERR_STATUS0_A)
#define PI_RDCLR_OFFSET		(PI_ERR_STATUS0_A_RCLR - PI_ERR_STATUS0_A)

/* Bits in PI_ERR_INT_PEND */
#define PI_ERR_SPOOL_CMP_B	0x00000001	/* Spool end hit high water */
#define PI_ERR_SPOOL_CMP_A	0x00000002
#define PI_ERR_SPUR_MSG_B	0x00000004	/* Spurious message intr.   */
#define PI_ERR_SPUR_MSG_A	0x00000008
#define PI_ERR_WRB_TERR_B	0x00000010	/* WRB TERR		    */
#define PI_ERR_WRB_TERR_A	0x00000020
#define PI_ERR_WRB_WERR_B	0x00000040	/* WRB WERR 		    */
#define PI_ERR_WRB_WERR_A	0x00000080
#define PI_ERR_SYSSTATE_B	0x00000100	/* SysState parity error    */
#define PI_ERR_SYSSTATE_A	0x00000200
#define PI_ERR_SYSAD_DATA_B	0x00000400	/* SysAD data parity error  */
#define PI_ERR_SYSAD_DATA_A	0x00000800
#define PI_ERR_SYSAD_ADDR_B	0x00001000	/* SysAD addr parity error  */
#define PI_ERR_SYSAD_ADDR_A	0x00002000
#define PI_ERR_SYSCMD_DATA_B	0x00004000	/* SysCmd data parity error */
#define PI_ERR_SYSCMD_DATA_A	0x00008000
#define PI_ERR_SYSCMD_ADDR_B	0x00010000	/* SysCmd addr parity error */
#define PI_ERR_SYSCMD_ADDR_A	0x00020000
#define PI_ERR_BAD_SPOOL_B	0x00040000	/* Error spooling to memory */
#define PI_ERR_BAD_SPOOL_A	0x00080000
#define PI_ERR_UNCAC_UNCORR_B	0x00100000	/* Uncached uncorrectable   */
#define PI_ERR_UNCAC_UNCORR_A	0x00200000
#define PI_ERR_SYSSTATE_TAG_B	0x00400000	/* SysState tag parity error */
#define PI_ERR_SYSSTATE_TAG_A	0x00800000
#define PI_ERR_MD_UNCORR	0x01000000	/* Must be cleared in MD    */

#define PI_ERR_CLEAR_ALL_A	0x00aaaaaa
#define PI_ERR_CLEAR_ALL_B	0x00555555


/*
 * The following three macros define all possible error int pends.
 */

#define PI_FATAL_ERR_CPU_A	(PI_ERR_SYSSTATE_TAG_A 	| \
				 PI_ERR_BAD_SPOOL_A 	| \
				 PI_ERR_SYSCMD_ADDR_A 	| \
				 PI_ERR_SYSCMD_DATA_A 	| \
				 PI_ERR_SYSAD_ADDR_A 	| \
				 PI_ERR_SYSAD_DATA_A	| \
				 PI_ERR_SYSSTATE_A)

#define PI_MISC_ERR_CPU_A	(PI_ERR_UNCAC_UNCORR_A 	| \
				 PI_ERR_WRB_WERR_A 	| \
				 PI_ERR_WRB_TERR_A 	| \
				 PI_ERR_SPUR_MSG_A 	| \
				 PI_ERR_SPOOL_CMP_A)

#define PI_FATAL_ERR_CPU_B	(PI_ERR_SYSSTATE_TAG_B 	| \
				 PI_ERR_BAD_SPOOL_B 	| \
				 PI_ERR_SYSCMD_ADDR_B 	| \
				 PI_ERR_SYSCMD_DATA_B 	| \
				 PI_ERR_SYSAD_ADDR_B 	| \
				 PI_ERR_SYSAD_DATA_B	| \
				 PI_ERR_SYSSTATE_B)

#define PI_MISC_ERR_CPU_B 	(PI_ERR_UNCAC_UNCORR_B  | \
				 PI_ERR_WRB_WERR_B 	| \
				 PI_ERR_WRB_TERR_B 	| \
				 PI_ERR_SPUR_MSG_B 	| \
				 PI_ERR_SPOOL_CMP_B)

#define PI_ERR_GENERIC	(PI_ERR_MD_UNCORR)

/*
 * Error types for PI_ERR_STATUS0_[AB] and error stack:
 * Use the write types if WRBRRB is 1 else use the read types
 */

/* Fields in PI_ERR_STATUS0_[AB] */
#define PI_ERR_ST0_TYPE_MASK	0x0000000000000007
#define PI_ERR_ST0_TYPE_SHFT	0
#define PI_ERR_ST0_REQNUM_MASK	0x0000000000000038
#define PI_ERR_ST0_REQNUM_SHFT	3
#define PI_ERR_ST0_SUPPL_MASK	0x000000000001ffc0
#define PI_ERR_ST0_SUPPL_SHFT	6
#define PI_ERR_ST0_CMD_MASK	0x0000000001fe0000
#define PI_ERR_ST0_CMD_SHFT	17
#define PI_ERR_ST0_ADDR_MASK	0x3ffffffffe000000
#define PI_ERR_ST0_ADDR_SHFT	25
#define PI_ERR_ST0_OVERRUN_MASK	0x4000000000000000
#define PI_ERR_ST0_OVERRUN_SHFT	62
#define PI_ERR_ST0_VALID_MASK	0x8000000000000000
#define PI_ERR_ST0_VALID_SHFT	63

/* Fields in PI_ERR_STATUS1_[AB] */
#define PI_ERR_ST1_SPOOL_MASK	0x00000000001fffff
#define PI_ERR_ST1_SPOOL_SHFT	0
#define PI_ERR_ST1_TOUTCNT_MASK	0x000000001fe00000
#define PI_ERR_ST1_TOUTCNT_SHFT	21
#define PI_ERR_ST1_INVCNT_MASK	0x0000007fe0000000
#define PI_ERR_ST1_INVCNT_SHFT	29
#define PI_ERR_ST1_CRBNUM_MASK	0x0000038000000000
#define PI_ERR_ST1_CRBNUM_SHFT	39
#define PI_ERR_ST1_WRBRRB_MASK	0x0000040000000000
#define PI_ERR_ST1_WRBRRB_SHFT	42
#define PI_ERR_ST1_CRBSTAT_MASK	0x001ff80000000000
#define PI_ERR_ST1_CRBSTAT_SHFT	43
#define PI_ERR_ST1_MSGSRC_MASK	0xffe0000000000000
#define PI_ERR_ST1_MSGSRC_SHFT	53

/* Fields in the error stack */
#define PI_ERR_STK_TYPE_MASK	0x0000000000000003
#define PI_ERR_STK_TYPE_SHFT	0
#define PI_ERR_STK_SUPPL_MASK	0x0000000000000038
#define PI_ERR_STK_SUPPL_SHFT	3
#define PI_ERR_STK_REQNUM_MASK	0x00000000000001c0
#define PI_ERR_STK_REQNUM_SHFT	6
#define PI_ERR_STK_CRBNUM_MASK	0x0000000000000e00
#define PI_ERR_STK_CRBNUM_SHFT	9
#define PI_ERR_STK_WRBRRB_MASK	0x0000000000001000
#define PI_ERR_STK_WRBRRB_SHFT	12
#define PI_ERR_STK_CRBSTAT_MASK	0x00000000007fe000
#define PI_ERR_STK_CRBSTAT_SHFT	13
#define PI_ERR_STK_CMD_MASK	0x000000007f800000
#define PI_ERR_STK_CMD_SHFT	23
#define PI_ERR_STK_ADDR_MASK	0xffffffff80000000
#define PI_ERR_STK_ADDR_SHFT	31

/* Error type in the error status or stack on Read CRBs */
#define PI_ERR_RD_PRERR		1
#define PI_ERR_RD_DERR		2
#define PI_ERR_RD_TERR		3

/* Error type in the error status or stack on Write CRBs */
#define PI_ERR_WR_WERR		0
#define PI_ERR_WR_PWERR		1
#define PI_ERR_WR_TERR		3

/* Read or Write CRB in error status or stack */
#define PI_ERR_RRB	0
#define PI_ERR_WRB	1
#define PI_ERR_ANY_CRB	2

/* Address masks in the error status and error stack are not the same */
#define ERR_STK_ADDR_SHFT	7
#define ERR_STAT0_ADDR_SHFT	3

#define PI_MIN_STACK_SIZE 4096	/* For figuring out the size to set */
#define PI_STACK_SIZE_SHFT	12	/* 4k */

#define ERR_STACK_SIZE_BYTES(_sz) \
       ((_sz) ? (PI_MIN_STACK_SIZE << ((_sz) - 1)) : 0)

#ifndef __ASSEMBLY__
/*
 * format of error stack and error status registers.
 */

struct err_stack_format {
	u64	sk_addr	   : 33,   /* address */
		sk_cmd	   :  8,   /* message command */
		sk_crb_sts : 10,   /* status from RRB or WRB */
		sk_rw_rb   :  1,   /* RRB == 0, WRB == 1 */
		sk_crb_num :  3,   /* WRB (0 to 7) or RRB (0 to 4) */
		sk_t5_req  :  3,   /* RRB T5 request number */
		sk_suppl   :  3,   /* lowest 3 bit of supplemental */
		sk_err_type:  3;   /* error type	*/
};

typedef union pi_err_stack {
	u64	pi_stk_word;
	struct	err_stack_format pi_stk_fmt;
} pi_err_stack_t;

struct err_status0_format {
	u64	s0_valid   :  1,   /* Valid */
		s0_ovr_run :  1,   /* Overrun, spooled to memory */
		s0_addr	   : 37,   /* address */
		s0_cmd	   :  8,   /* message command */
		s0_supl	   : 11,   /* message supplemental field */
		s0_t5_req  :  3,   /* RRB T5 request number */
		s0_err_type:  3;   /* error type */
};

typedef union pi_err_stat0 {
	u64	pi_stat0_word;
	struct err_status0_format pi_stat0_fmt;
} pi_err_stat0_t;

struct err_status1_format {
	u64	s1_src	   : 11,   /* message source */
		s1_crb_sts : 10,   /* status from RRB or WRB */
		s1_rw_rb   :  1,   /* RRB == 0, WRB == 1 */
		s1_crb_num :  3,   /* WRB (0 to 7) or RRB (0 to 4) */
		s1_inval_cnt:10,   /* signed invalidate counter RRB */
		s1_to_cnt  :  8,   /* crb timeout counter */
		s1_spl_cnt : 21;   /* number spooled to memory */
};

typedef union pi_err_stat1 {
	u64	pi_stat1_word;
	struct err_status1_format pi_stat1_fmt;
} pi_err_stat1_t;

typedef u64	rtc_time_t;

#endif /* !__ASSEMBLY__ */


/* Bits in PI_SYSAD_ERRCHK_EN */
#define PI_SYSAD_ERRCHK_ECCGEN	0x01	/* Enable ECC generation	    */
#define PI_SYSAD_ERRCHK_QUALGEN	0x02	/* Enable data quality signal gen.  */
#define PI_SYSAD_ERRCHK_SADP	0x04	/* Enable SysAD parity checking     */
#define PI_SYSAD_ERRCHK_CMDP	0x08	/* Enable SysCmd parity checking    */
#define PI_SYSAD_ERRCHK_STATE	0x10	/* Enable SysState parity checking  */
#define PI_SYSAD_ERRCHK_QUAL	0x20	/* Enable data quality checking     */
#define PI_SYSAD_CHECK_ALL	0x3f	/* Generate and check all signals.  */

/* Interrupt pending bits on R10000 */

#define HUB_IP_PEND0		0x0400
#define HUB_IP_PEND1_CC		0x0800
#define HUB_IP_RT		0x1000
#define HUB_IP_PROF		0x2000
#define HUB_IP_ERROR		0x4000
#define HUB_IP_MASK		0x7c00

/* PI_RT_LOCAL_CTRL mask and shift definitions */

#define PRLC_USE_INT_SHFT	16
#define PRLC_USE_INT_MASK	(UINT64_CAST 1 << 16)
#define PRLC_USE_INT		(UINT64_CAST 1 << 16)
#define PRLC_GCLK_SHFT		15
#define PRLC_GCLK_MASK		(UINT64_CAST 1 << 15)
#define PRLC_GCLK		(UINT64_CAST 1 << 15)
#define PRLC_GCLK_COUNT_SHFT	8
#define PRLC_GCLK_COUNT_MASK	(UINT64_CAST 0x7f << 8)
#define PRLC_MAX_COUNT_SHFT	1
#define PRLC_MAX_COUNT_MASK	(UINT64_CAST 0x7f << 1)
#define PRLC_GCLK_EN_SHFT	0
#define PRLC_GCLK_EN_MASK	(UINT64_CAST 1)
#define PRLC_GCLK_EN		(UINT64_CAST 1)

/* PI_RT_FILTER_CTRL mask and shift definitions */

/*
 * Bits for NACK_CNT_A/B and NACK_CMP
 */
#define PI_NACK_CNT_EN_SHFT	20
#define PI_NACK_CNT_EN_MASK	0x100000
#define PI_NACK_CNT_MASK	0x0fffff
#define PI_NACK_CNT_MAX		0x0fffff

#endif /* _ASM_SN_SN0_HUBPI_H */