xref: /src/sys/arch/sparc64/include/ctlreg.h

/*	$NetBSD: ctlreg.h,v 1.32 2004/03/22 12:24:37 nakayama Exp $ */

/*
 * Copyright (c) 1996-2002 Eduardo Horvath
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR  ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR  BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

/*
 * Sun 4u control registers. (includes address space definitions
 * and some registers in control space).
 */

/*
 * The Alternate address spaces.
 *
 * 0x00-0x7f are privileged
 * 0x80-0xff can be used by users
 */

#define	ASI_LITTLE	0x08		/* This bit should make an ASI little endian */

#define	ASI_NUCLEUS			0x04	/* [4u] kernel address space */
#define	ASI_NUCLEUS_LITTLE		0x0c	/* [4u] kernel address space, little endian */

#define	ASI_AS_IF_USER_PRIMARY		0x10	/* [4u] primary user address space */
#define	ASI_AS_IF_USER_SECONDARY	0x11	/* [4u] secondary user address space */

#define	ASI_PHYS_CACHED			0x14	/* [4u] MMU bypass to main memory */
#define	ASI_PHYS_NON_CACHED		0x15	/* [4u] MMU bypass to I/O location */

#define	ASI_AS_IF_USER_PRIMARY_LITTLE	0x18	/* [4u] primary user address space, little endian  */
#define	ASI_AS_IF_USER_SECONDARY_LITTIE	0x19	/* [4u] secondary user address space, little endian  */

#define	ASI_PHYS_CACHED_LITTLE		0x1c	/* [4u] MMU bypass to main memory, little endian */
#define	ASI_PHYS_NON_CACHED_LITTLE	0x1d	/* [4u] MMU bypass to I/O location, little endian */

#define	ASI_NUCLEUS_QUAD_LDD		0x24	/* [4u] use w/LDDA to load 128-bit item */
#define	ASI_NUCLEUS_QUAD_LDD_LITTLE	0x2c	/* [4u] use w/LDDA to load 128-bit item, little endian */

#define	ASI_FLUSH_D_PAGE_PRIMARY	0x38	/* [4u] flush D-cache page using primary context */
#define	ASI_FLUSH_D_PAGE_SECONDARY	0x39	/* [4u] flush D-cache page using secondary context */
#define	ASI_FLUSH_D_CTX_PRIMARY		0x3a	/* [4u] flush D-cache context using primary context */
#define	ASI_FLUSH_D_CTX_SECONDARY	0x3b	/* [4u] flush D-cache context using secondary context */

#define	ASI_LSU_CONTROL_REGISTER	0x45	/* [4u] load/store unit control register */

#define	ASI_DCACHE_DATA			0x46	/* [4u] diagnostic access to D-cache data RAM */
#define	ASI_DCACHE_TAG			0x47	/* [4u] diagnostic access to D-cache tag RAM */

#define	ASI_INTR_DISPATCH_STATUS	0x48	/* [4u] interrupt dispatch status register */
#define	ASI_INTR_RECEIVE		0x49	/* [4u] interrupt receive status register */
#define	ASI_MID_REG			0x4a	/* [4u] hardware config and MID */
#define	ASI_ERROR_EN_REG		0x4b	/* [4u] asynchronous error enables */
#define	ASI_AFSR			0x4c	/* [4u] asynchronous fault status register */
#define	ASI_AFAR			0x4d	/* [4u] asynchronous fault address register */

#define	ASI_ICACHE_DATA			0x66	/* [4u] diagnostic access to D-cache data RAM */
#define	ASI_ICACHE_TAG			0x67	/* [4u] diagnostic access to D-cache tag RAM */
#define	ASI_FLUSH_I_PAGE_PRIMARY	0x68	/* [4u] flush D-cache page using primary context */
#define	ASI_FLUSH_I_PAGE_SECONDARY	0x69	/* [4u] flush D-cache page using secondary context */
#define	ASI_FLUSH_I_CTX_PRIMARY		0x6a	/* [4u] flush D-cache context using primary context */
#define	ASI_FLUSH_I_CTX_SECONDARY	0x6b	/* [4u] flush D-cache context using secondary context */

#define	ASI_BLOCK_AS_IF_USER_PRIMARY	0x70	/* [4u] primary user address space, block loads/stores */
#define	ASI_BLOCK_AS_IF_USER_SECONDARY	0x71	/* [4u] secondary user address space, block loads/stores */

#define	ASI_ECACHE_DIAG			0x76	/* [4u] diag access to E-cache tag and data */
#define	ASI_DATAPATH_ERR_REG_WRITE	0x77	/* [4u] ASI is reused */

#define	ASI_BLOCK_AS_IF_USER_PRIMARY_LITTLE	0x78	/* [4u] primary user address space, block loads/stores */
#define	ASI_BLOCK_AS_IF_USER_SECONDARY_LITTLE	0x79	/* [4u] secondary user address space, block loads/stores */

#define	ASI_INTERRUPT_RECEIVE_DATA	0x7f	/* [4u] interrupt receive data registers {0,1,2} */
#define	ASI_DATAPATH_ERR_REG_READ	0x7f	/* [4u] read access to datapath error registers (ASI reused) */

#define	ASI_PRIMARY			0x80	/* [4u] primary address space */
#define	ASI_SECONDARY			0x81	/* [4u] secondary address space */
#define	ASI_PRIMARY_NOFAULT		0x82	/* [4u] primary address space, no fault */
#define	ASI_SECONDARY_NOFAULT		0x83	/* [4u] secondary address space, no fault */

#define	ASI_PRIMARY_LITTLE		0x88	/* [4u] primary address space, little endian */
#define	ASI_SECONDARY_LITTLE		0x89	/* [4u] secondary address space, little endian */
#define	ASI_PRIMARY_NOFAULT_LITTLE	0x8a	/* [4u] primary address space, no fault, little endian */
#define	ASI_SECONDARY_NOFAULT_LITTLE	0x8b	/* [4u] secondary address space, no fault, little endian */

#define	ASI_PST8_PRIMARY		0xc0	/* [VIS] Eight 8-bit partial store, primary */
#define	ASI_PST8_SECONDARY		0xc1	/* [VIS] Eight 8-bit partial store, secondary */
#define	ASI_PST16_PRIMARY		0xc2	/* [VIS] Four 16-bit partial store, primary */
#define	ASI_PST16_SECONDARY		0xc3	/* [VIS] Fout 16-bit partial store, secondary */
#define	ASI_PST32_PRIMARY		0xc4	/* [VIS] Two 32-bit partial store, primary */
#define	ASI_PST32_SECONDARY		0xc5	/* [VIS] Two 32-bit partial store, secondary */

#define	ASI_PST8_PRIMARY_LITTLE		0xc8	/* [VIS] Eight 8-bit partial store, primary, little endian */
#define	ASI_PST8_SECONDARY_LITTLE	0xc9	/* [VIS] Eight 8-bit partial store, secondary, little endian */
#define	ASI_PST16_PRIMARY_LITTLE	0xca	/* [VIS] Four 16-bit partial store, primary, little endian */
#define	ASI_PST16_SECONDARY_LITTLE	0xcb	/* [VIS] Fout 16-bit partial store, secondary, little endian */
#define	ASI_PST32_PRIMARY_LITTLE	0xcc	/* [VIS] Two 32-bit partial store, primary, little endian */
#define	ASI_PST32_SECONDARY_LITTLE	0xcd	/* [VIS] Two 32-bit partial store, secondary, little endian */

#define	ASI_FL8_PRIMARY			0xd0	/* [VIS] One 8-bit load/store floating, primary */
#define	ASI_FL8_SECONDARY		0xd1	/* [VIS] One 8-bit load/store floating, secondary */
#define	ASI_FL16_PRIMARY		0xd2	/* [VIS] One 16-bit load/store floating, primary */
#define	ASI_FL16_SECONDARY		0xd3	/* [VIS] One 16-bit load/store floating, secondary */

#define	ASI_FL8_PRIMARY_LITTLE		0xd8	/* [VIS] One 8-bit load/store floating, primary, little endian */
#define	ASI_FL8_SECONDARY_LITTLE	0xd9	/* [VIS] One 8-bit load/store floating, secondary, little endian */
#define	ASI_FL16_PRIMARY_LITTLE		0xda	/* [VIS] One 16-bit load/store floating, primary, little endian */
#define	ASI_FL16_SECONDARY_LITTLE	0xdb	/* [VIS] One 16-bit load/store floating, secondary, little endian */

#define	ASI_BLOCK_COMMIT_PRIMARY	0xe0	/* [4u] block store with commit, primary */
#define	ASI_BLOCK_COMMIT_SECONDARY	0xe1	/* [4u] block store with commit, secondary */
#define	ASI_BLOCK_PRIMARY		0xf0	/* [4u] block load/store, primary */
#define	ASI_BLOCK_SECONDARY		0xf1	/* [4u] block load/store, secondary */
#define	ASI_BLOCK_PRIMARY_LITTLE	0xf8	/* [4u] block load/store, primary, little endian */
#define	ASI_BLOCK_SECONDARY_LITTLE	0xf9	/* [4u] block load/store, secondary, little endian */


/*
 * These are the shorter names used by Solaris
 */

#define	ASI_N		ASI_NUCLEUS
#define	ASI_NL		ASI_NUCLEUS_LITTLE
#define	ASI_AIUP	ASI_AS_IF_USER_PRIMARY
#define	ASI_AIUS	ASI_AS_IF_USER_SECONDARY
#define	ASI_AIUPL	ASI_AS_IF_USER_PRIMARY_LITTLE
#define	ASI_AIUSL	ASI_AS_IF_USER_SECONDARY_LITTLE
#define	ASI_P		ASI_PRIMARY
#define	ASI_S		ASI_SECONDARY
#define	ASI_PNF		ASI_PRIMARY_NOFAULT
#define	ASI_SNF		ASI_SECONDARY_NOFAULT
#define	ASI_PL		ASI_PRIMARY_LITTLE
#define	ASI_SL		ASI_SECONDARY_LITTLE
#define	ASI_PNFL	ASI_PRIMARY_NOFAULT_LITTLE
#define	ASI_SNFL	ASI_SECONDARY_NOFAULT_LITTLE
#define	ASI_FL8_P	ASI_FL8_PRIMARY
#define	ASI_FL8_S	ASI_FL8_SECONDARY
#define	ASI_FL16_P	ASI_FL16_PRIMARY
#define	ASI_FL16_S	ASI_FL16_SECONDARY
#define	ASI_FL8_PL	ASI_FL8_PRIMARY_LITTLE
#define	ASI_FL8_SL	ASI_FL8_SECONDARY_LITTLE
#define	ASI_FL16_PL	ASI_FL16_PRIMARY_LITTLE
#define	ASI_FL16_SL	ASI_FL16_SECONDARY_LITTLE
#define	ASI_BLK_AIUP	ASI_BLOCK_AS_IF_USER_PRIMARY
#define	ASI_BLK_AIUPL	ASI_BLOCK_AS_IF_USER_PRIMARY_LITTLE
#define	ASI_BLK_AIUS	ASI_BLOCK_AS_IF_USER_SECONDARY
#define	ASI_BLK_AIUSL	ASI_BLOCK_AS_IF_USER_SECONDARY_LITTLE
#define	ASI_BLK_COMMIT_P		ASI_BLOCK_COMMIT_PRIMARY
#define	ASI_BLK_COMMIT_PRIMARY		ASI_BLOCK_COMMIT_PRIMARY
#define	ASI_BLK_COMMIT_S		ASI_BLOCK_COMMIT_SECONDARY
#define	ASI_BLK_COMMIT_SECONDARY	ASI_BLOCK_COMMIT_SECONDARY
#define	ASI_BLK_P			ASI_BLOCK_PRIMARY
#define	ASI_BLK_PL			ASI_BLOCK_PRIMARY_LITTLE
#define	ASI_BLK_S			ASI_BLOCK_SECONDARY
#define	ASI_BLK_SL			ASI_BLOCK_SECONDARY_LITTLE

/* Alternative spellings */
#define ASI_PRIMARY_NO_FAULT		ASI_PRIMARY_NOFAULT
#define ASI_PRIMARY_NO_FAULT_LITTLE	ASI_PRIMARY_NOFAULT_LITTLE
#define ASI_SECONDARY_NO_FAULT		ASI_SECONDARY_NOFAULT
#define ASI_SECONDARY_NO_FAULT_LITTLE	ASI_SECONDARY_NOFAULT_LITTLE

#define	PHYS_ASI(x)	(((x) | 0x09) == 0x1d)
#define	LITTLE_ASI(x)	((x) & ASI_LITTLE)

/*
 * The following are 4u control registers
 */


/* Get the CPU's UPAID */
#define	UPA_CR_MID(x)	(((x)>>17)&0x1f)
#define	CPU_UPAID	UPA_CR_MID(ldxa(0, ASI_MID_REG))

/*
 * [4u] MMU and Cache Control Register (MCCR)
 * use ASI = 0x45
 */
#define	ASI_MCCR	ASI_LSU_CONTROL_REGISTER
#define	MCCR		0x00

/* MCCR Bits and their meanings */
#define	MCCR_DMMU_EN	0x08
#define	MCCR_IMMU_EN	0x04
#define	MCCR_DCACHE_EN	0x02
#define	MCCR_ICACHE_EN	0x01


/*
 * MMU control registers
 */

/* Choose an MMU */
#define	ASI_DMMU		0x58
#define	ASI_IMMU		0x50

/* Other assorted MMU ASIs */
#define	ASI_IMMU_8KPTR		0x51
#define	ASI_IMMU_64KPTR		0x52
#define	ASI_IMMU_DATA_IN	0x54
#define	ASI_IMMU_TLB_DATA	0x55
#define	ASI_IMMU_TLB_TAG	0x56
#define	ASI_DMMU_8KPTR		0x59
#define	ASI_DMMU_64KPTR		0x5a
#define	ASI_DMMU_DATA_IN	0x5c
#define	ASI_DMMU_TLB_DATA	0x5d
#define	ASI_DMMU_TLB_TAG	0x5e

/*
 * The following are the control registers
 * They work on both MMUs unless noted.
 *
 * Register contents are defined later on individual registers.
 */
#define	TSB_TAG_TARGET		0x0
#define	TLB_DATA_IN		0x0
#define	CTX_PRIMARY		0x08	/* primary context -- DMMU only */
#define	CTX_SECONDARY		0x10	/* secondary context -- DMMU only */
#define	SFSR			0x18
#define	SFAR			0x20	/* fault address -- DMMU only */
#define	TSB			0x28
#define	TLB_TAG_ACCESS		0x30
#define	VIRTUAL_WATCHPOINT	0x38
#define	PHYSICAL_WATCHPOINT	0x40

/* Tag Target bits */
#define	TAG_TARGET_VA_MASK	0x03ffffffffffffffffLL
#define	TAG_TARGET_VA(x)	(((x)<<22)&TAG_TARGET_VA_MASK)
#define	TAG_TARGET_CONTEXT(x)	((x)>>48)
#define	TAG_TARGET(c,v)		((((uint64_t)c)<<48)|(((uint64_t)v)&TAG_TARGET_VA_MASK))

/* SFSR bits for both D_SFSR and I_SFSR */
#define	SFSR_ASI(x)		((x)>>16)
#define	SFSR_FT_VA_OOR_2	0x02000 /* IMMU: jumpl or return to unsupportd VA */
#define	SFSR_FT_VA_OOR_1	0x01000 /* fault at unsupported VA */
#define	SFSR_FT_NFO		0x00800	/* DMMU: Access to page marked NFO */
#define	SFSR_ILL_ASI		0x00400	/* DMMU: Illegal (unsupported) ASI */
#define	SFSR_FT_IO_ATOMIC	0x00200	/* DMMU: Atomic access to noncacheable page */
#define	SFSR_FT_ILL_NF		0x00100	/* DMMU: NF load or flush to page marked E (has side effects) */
#define	SFSR_FT_PRIV		0x00080	/* Privilege violation */
#define	SFSR_FT_E		0x00040	/* DMUU: value of E bit associated address */
#define	SFSR_CTXT(x)		(((x)>>4)&0x3)
#define	SFSR_CTXT_IS_PRIM(x)	(SFSR_CTXT(x)==0x00)
#define	SFSR_CTXT_IS_SECOND(x)	(SFSR_CTXT(x)==0x01)
#define	SFSR_CTXT_IS_NUCLEUS(x)	(SFSR_CTXT(x)==0x02)
#define	SFSR_PRIV		0x00008	/* value of PSTATE.PRIV for faulting access */
#define	SFSR_W			0x00004 /* DMMU: attempted write */
#define	SFSR_OW			0x00002 /* Overwrite; prev vault was still valid */
#define	SFSR_FV			0x00001	/* Fault is valid */
#define	SFSR_FT	(SFSR_FT_VA_OOR_2|SFSR_FT_VA_OOR_1|SFSR_FT_NFO|SFSR_ILL_ASI|SFSR_FT_IO_ATOMIC|SFSR_FT_ILL_NF|SFSR_FT_PRIV)

#if 0
/* Old bits */
#define	SFSR_BITS "\40\16VAT\15VAD\14NFO\13ASI\12A\11NF\10PRIV\7E\6NUCLEUS\5SECONDCTX\4PRIV\3W\2OW\1FV"
#else
/* New bits */
#define	SFSR_BITS "\177\20" \
	"f\20\30ASI\0" "b\16VAT\0" "b\15VAD\0" "b\14NFO\0" "b\13ASI\0" "b\12A\0" "b\11NF\0" "b\10PRIV\0" \
	 "b\7E\0" "b\6NUCLEUS\0" "b\5SECONDCTX\0" "b\4PRIV\0" "b\3W\0" "b\2OW\0" "b\1FV\0"
#endif

/* ASFR bits */
#define	ASFR_ME			0x100000000LL
#define	ASFR_PRIV		0x080000000LL
#define	ASFR_ISAP		0x040000000LL
#define	ASFR_ETP		0x020000000LL
#define	ASFR_IVUE		0x010000000LL
#define	ASFR_TO			0x008000000LL
#define	ASFR_BERR		0x004000000LL
#define	ASFR_LDP		0x002000000LL
#define	ASFR_CP			0x001000000LL
#define	ASFR_WP			0x000800000LL
#define	ASFR_EDP		0x000400000LL
#define	ASFR_UE			0x000200000LL
#define	ASFR_CE			0x000100000LL
#define	ASFR_ETS		0x0000f0000LL
#define	ASFT_P_SYND		0x00000ffffLL

#define	AFSR_BITS "\177\20" \
        "b\40ME\0"      "b\37PRIV\0"    "b\36ISAP\0"    "b\35ETP\0" \
        "b\34IVUE\0"    "b\33TO\0"      "b\32BERR\0"    "b\31LDP\0" \
        "b\30CP\0"      "b\27WP\0"      "b\26EDP\0"     "b\25UE\0" \
        "b\24CE\0"      "f\20\4ETS\0"   "f\0\20P_SYND\0"

/*
 * Here's the spitfire TSB control register bits.
 *
 * Each TSB entry is 16-bytes wide.  The TSB must be size aligned
 */
#define	TSB_SIZE_512		0x0	/* 8kB, etc. */
#define	TSB_SIZE_1K		0x01
#define	TSB_SIZE_2K		0x02
#define	TSB_SIZE_4K		0x03
#define	TSB_SIZE_8K		0x04
#define	TSB_SIZE_16K		0x05
#define	TSB_SIZE_32K		0x06
#define	TSB_SIZE_64K		0x07
#define	TSB_SPLIT		0x1000
#define	TSB_BASE		0xffffffffffffe000

/*  TLB Tag Access bits */
#define	TLB_TAG_ACCESS_VA	0xffffffffffffe000
#define	TLB_TAG_ACCESS_CTX	0x0000000000001fff

/*
 * TLB demap registers.  TTEs are defined in v9pte.h
 *
 * Use the address space to select between IMMU and DMMU.
 * The address of the register selects which context register
 * to read the ASI from.
 *
 * The data stored in the register is interpreted as the VA to
 * use.  The DEMAP_CTX_<> registers ignore the address and demap the
 * entire ASI.
 *
 */
#define	ASI_IMMU_DEMAP			0x57	/* [4u] IMMU TLB demap */
#define	ASI_DMMU_DEMAP			0x5f	/* [4u] IMMU TLB demap */

#define	DEMAP_PAGE_NUCLEUS		((0x02)<<4)	/* Demap page from kernel AS */
#define	DEMAP_PAGE_PRIMARY		((0x00)<<4)	/* Demap a page from primary CTXT */
#define	DEMAP_PAGE_SECONDARY		((0x01)<<4)	/* Demap page from secondary CTXT (DMMU only) */
#define	DEMAP_CTX_NUCLEUS		((0x06)<<4)	/* Demap all of kernel CTXT */
#define	DEMAP_CTX_PRIMARY		((0x04)<<4)	/* Demap all of primary CTXT */
#define	DEMAP_CTX_SECONDARY		((0x05)<<4)	/* Demap all of secondary CTXT */

/*
 * Interrupt registers.  This really gets hairy.
 */

/* IRSR -- Interrupt Receive Status Ragister */
#define	ASI_IRSR	0x49
#define	IRSR		0x00
#define	IRSR_BUSY	0x020
#define	IRSR_MID(x)	(x&0x1f)

/* IRDR -- Interrupt Receive Data Registers */
#define	ASI_IRDR	0x7f
#define	IRDR_0H		0x40
#define	IRDR_0L		0x48	/* unimplemented */
#define	IRDR_1H		0x50
#define	IRDR_1L		0x58	/* unimplemented */
#define	IRDR_2H		0x60
#define	IRDR_2L		0x68	/* unimplemented */
#define	IRDR_3H		0x70	/* unimplemented */
#define	IRDR_3L		0x78	/* unimplemented */

/* SOFTINT ASRs */
#define	SET_SOFTINT	%asr20	/* Sets these bits */
#define	CLEAR_SOFTINT	%asr21	/* Clears these bits */
#define	SOFTINT		%asr22	/* Reads the register */
#define	TICK_CMPR	%asr23

#define	TICK_INT	0x01	/* level-14 clock tick */
#define	SOFTINT1	(0x1<<1)
#define	SOFTINT2	(0x1<<2)
#define	SOFTINT3	(0x1<<3)
#define	SOFTINT4	(0x1<<4)
#define	SOFTINT5	(0x1<<5)
#define	SOFTINT6	(0x1<<6)
#define	SOFTINT7	(0x1<<7)
#define	SOFTINT8	(0x1<<8)
#define	SOFTINT9	(0x1<<9)
#define	SOFTINT10	(0x1<<10)
#define	SOFTINT11	(0x1<<11)
#define	SOFTINT12	(0x1<<12)
#define	SOFTINT13	(0x1<<13)
#define	SOFTINT14	(0x1<<14)
#define	SOFTINT15	(0x1<<15)

/* Interrupt Dispatch -- usually reserved for cross-calls */
#define	ASR_IDSR	0x48 /* Interrupt dispatch status reg */
#define	IDSR		0x00
#define	IDSR_NACK	0x02
#define	IDSR_BUSY	0x01

#define	ASI_INTERRUPT_DISPATCH		0x77	/* [4u] spitfire interrupt dispatch regs */

/* Interrupt delivery initiation */
#define	IDCR(x)		((((uint64_t)(x)) << 14) | 0x70)

#define	IDDR_0H		0x40	/* Store data to send in these regs */
#define	IDDR_0L		0x48	/* unimplemented */
#define	IDDR_1H		0x50
#define	IDDR_1L		0x58	/* unimplemented */
#define	IDDR_2H		0x60
#define	IDDR_2L		0x68	/* unimplemented */
#define	IDDR_3H		0x70	/* unimplemented */
#define	IDDR_3L		0x78	/* unimplemented */

/*
 * Error registers
 */

/* Since we won't try to fix async errs, we don't care about the bits in the regs */
#define	ASI_AFAR	0x4d	/* Asynchronous fault address register */
#define	AFAR		0x00
#define	ASI_AFSR	0x4c	/* Asynchronous fault status register */
#define	AFSR		0x00

#define	ASI_P_EER	0x4b	/* Error enable register */
#define	P_EER		0x00
#define	P_EER_ISAPEN	0x04	/* Enable fatal on ISAP */
#define	P_EER_NCEEN	0x02	/* Enable trap on uncorrectable errs */
#define	P_EER_CEEN	0x01	/* Enable trap on correctable errs */

#define	ASI_DATAPATH_READ	0x7f /* Read the regs */
#define	ASI_DATAPATH_WRITE	0x77 /* Write to the regs */
#define	P_DPER_0	0x00	/* Datapath err reg 0 */
#define	P_DPER_1	0x18	/* Datapath err reg 1 */
#define	P_DCR_0		0x20	/* Datapath control reg 0 */
#define	P_DCR_1		0x38	/* Datapath control reg 0 */


/* From sparc64/asm.h which I think I'll deprecate since it makes bus.h a pain. */

#ifndef _LOCORE
/*
 * GCC __asm constructs for doing assembly stuff.
 */

/*
 * ``Routines'' to load and store from/to alternate address space.
 * The location can be a variable, the asi value (address space indicator)
 * must be a constant.
 *
 * N.B.: You can put as many special functions here as you like, since
 * they cost no kernel space or time if they are not used.
 *
 * These were static inline functions, but gcc screws up the constraints
 * on the address space identifiers (the "n"umeric value part) because
 * it inlines too late, so we have to use the funny valued-macro syntax.
 */

/*
 * Apparently the definition of bypass ASIs is that they all use the
 * D$ so we need to flush the D$ to make sure we don't get data pollution.
 */

static __inline__ u_char lduba __P((paddr_t loc, int asi));
static __inline__ u_short lduha __P((paddr_t loc, int asi));
static __inline__ u_int lda __P((paddr_t loc, int asi));
static __inline__ int ldswa __P((paddr_t loc, int asi));
static __inline__ u_int64_t ldxa __P((paddr_t loc, int asi));
static __inline__ u_int64_t ldda __P((paddr_t loc, int asi));

static __inline__ void stba __P((paddr_t loc, int asi, u_char value));
static __inline__ void stha __P((paddr_t loc, int asi, u_short value));
static __inline__ void sta __P((paddr_t loc, int asi, u_int value));
static __inline__ void stxa __P((paddr_t loc, int asi, u_int64_t value));
static __inline__ void stda __P((paddr_t loc, int asi, u_int64_t value));

#if 0
static __inline__ unsigned int casa __P((paddr_t loc, int asi,
	unsigned int value, unsigned int oldvalue));
static __inline__ u_int64_t casxa __P((paddr_t loc, int asi,
	u_int64_t value, u_int64_t oldvalue));
#endif

#ifdef __arch64__
static __inline__ u_char
lduba(paddr_t loc, int asi)
{
	register unsigned int _lduba_v;

	__asm __volatile("wr %2,%%g0,%%asi; "
		" lduba [%1]%%asi,%0; wr %%g0, 0x82, %%asi" :
		"=r" (_lduba_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lduba_v);
}
#else
static __inline__ u_char
lduba(paddr_t loc, int asi)
{
	register unsigned int _lduba_v, _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi;  sllx %3,32,%0; "
" rdpr %%pstate,%1; or %0,%2,%0; wrpr %1,8,%%pstate; "
" membar #Sync; lduba [%0]%%asi,%0; wrpr %1,0,%%pstate; "
" membar #Sync; wr %%g0, 0x82, %%asi" :
				 "=&r" (_lduba_v),  "=&r" (_pstate) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %3,%%g0,%%asi; sllx %2,32,%0; "
" or %0,%1,%0; lduba [%0]%%asi,%0; wr %%g0, 0x82, %%asi" : "=&r" (_lduba_v) :
				 "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi));
	}
	return (_lduba_v);
}
#endif

#ifdef __arch64__
/* load half-word from alternate address space */
static __inline__ u_short
lduha(paddr_t loc, int asi)
{
	register unsigned int _lduha_v;

	__asm __volatile("wr %2,%%g0,%%asi; lduha [%1]%%asi,%0; "
		" wr %%g0, 0x82, %%asi" :
		"=r" (_lduha_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lduha_v);
}
#else
/* load half-word from alternate address space */
static __inline__ u_short
lduha(paddr_t loc, int asi) {
	register unsigned int _lduha_v, _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);

	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" rdpr %%pstate,%1; wrpr %1,8,%%pstate; "
" or %0,%2,%0; membar #Sync; lduha [%0]%%asi,%0; wrpr %1,0,%%pstate; "
" membar #Sync; wr %%g0, 0x82, %%asi" :
				 "=&r" (_lduha_v), "=&r" (_pstate) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %3,%%g0,%%asi; sllx %2,32,%0; "
" or %0,%1,%0; lduha [%0]%%asi,%0; wr %%g0, 0x82, %%asi" : "=&r" (_lduha_v) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi), "r" (asi));
	}
	return (_lduha_v);
}
#endif


#ifdef __arch64__
/* load unsigned int from alternate address space */
static __inline__ u_int
lda(paddr_t loc, int asi)
{
	register unsigned int _lda_v;

	__asm __volatile("wr %2,%%g0,%%asi; lda [%1]%%asi,%0" :
		"=r" (_lda_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lda_v);
}

/* load signed int from alternate address space */
static __inline__ int
ldswa(paddr_t loc, int asi)
{
	register int _lda_v;

	__asm __volatile("wr %2,%%g0,%%asi; "
		" ldswa [%1]%%asi,%0; wr %%g0, 0x82, %%asi" :
		"=r" (_lda_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lda_v);
}
#else	/* __arch64__ */
/* load unsigned int from alternate address space */
static __inline__ u_int
lda(paddr_t loc, int asi)
{
	register unsigned int _lda_v, _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi; rdpr %%pstate,%1;"
" sllx %3,32,%0;  wrpr %1,8,%%pstate;  or %0,%2,%0; membar #Sync; "
" lda [%0]%%asi,%0; wrpr %1,0,%%pstate; membar #Sync; "
" wr %%g0, 0x82, %%asi" : "=&r" (_lda_v), "=&r" (_pstate) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %3,%%g0,%%asi; sllx %2,32,%0; "
" or %0,%1,%0; lda [%0]%%asi,%0; wr %%g0, 0x82, %%asi" : "=&r" (_lda_v) :
				 "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi));
	}
	return (_lda_v);
}

/* load signed int from alternate address space */
static __inline__ int
ldswa(paddr_t loc, int asi)
{
	register int _lda_v, _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi; rdpr %%pstate,%1;"
" wrpr %1,8,%%pstate; sllx %3,32,%0;"
" or %0,%2,%0; membar #Sync; ldswa [%0]%%asi,%0; wrpr %1,0,%%pstate; "
" membar #Sync; wr %%g0, 0x82, %%asi" :
				 "=&r" (_lda_v), "=&r" (_pstate) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %3,%%g0,%%asi; sllx %2,32,%0; "
" or %0,%1,%0; ldswa [%0]%%asi,%0; wr %%g0, 0x82, %%asi" : "=&r" (_lda_v) :
				 "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi));
	}
	return (_lda_v);
}
#endif /* __arch64__ */

#ifdef	__arch64__
/* load 64-bit int from alternate address space -- these should never be used */
static __inline__ u_int64_t
ldda(paddr_t loc, int asi)
{
	register long long _lda_v;

	__asm __volatile("wr %2,%%g0,%%asi; "
		" ldda [%1]%%asi,%0; wr %%g0, 0x82, %%asi" :
		"=r" (_lda_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lda_v);
}
#else
/* load 64-bit int from alternate address space */
static __inline__ u_int64_t
ldda(paddr_t loc, int asi)
{
	register long long _lda_v, _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi; rdpr %%pstate,%1;"
" wrpr %1,8,%%pstate; sllx %3,32,%0; or %0,%2,%0; membar #Sync;"
" ldda [%0]%%asi,%0; wrpr %1,0,%%pstate; membar #Sync;  wr %%g0, 0x82, %%asi" :
				 "=&r" (_lda_v), "=&r" (_pstate) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %3,%%g0,%%asi; sllx %2,32,%0; "
" or %0,%1,%0; ldda [%0]%%asi,%0; wr %%g0, 0x82, %%asi" : "=&r" (_lda_v) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi), "r" (asi));
	}
	return (_lda_v);
}
#endif


#ifdef __arch64__
/* native load 64-bit int from alternate address space w/64-bit compiler*/
static __inline__ u_int64_t
ldxa(paddr_t loc, int asi)
{
	register unsigned long _lda_v;

	__asm __volatile("wr %2,%%g0,%%asi; "
		" ldxa [%1]%%asi,%0; wr %%g0, 0x82, %%asi" :
		"=r" (_lda_v) :
		"r" ((unsigned long)(loc)), "r" (asi));
	return (_lda_v);
}
#else
/* native load 64-bit int from alternate address space w/32-bit compiler*/
static __inline__ u_int64_t
ldxa(paddr_t loc, int asi)
{
	register unsigned long _ldxa_lo, _ldxa_hi, _loc_hi;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %4,%%g0,%%asi;  rdpr %%pstate,%1; "
" sllx %3,32,%0; wrpr %1,8,%%pstate; or %0,%2,%0; membar #Sync; "
" ldxa [%0]%%asi,%0; wrpr %1,0,%%pstate; membar #Sync; "
" srlx %0,32,%1; srl %0,0,%0; wr %%g0, 0x82, %%asi" :
				 "=&r" (_ldxa_lo), "=&r" (_ldxa_hi) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	} else {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" or %0,%2,%0; ldxa [%0]%%asi,%0; srlx %0,32,%1; "
" srl %0,0,%0;; wr %%g0, 0x82, %%asi" :
				 "=&r" (_ldxa_lo), "=&r" (_ldxa_hi) :
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi));
	}
	return ((((int64_t)_ldxa_hi)<<32)|_ldxa_lo);
}
#endif

/* store byte to alternate address space */
#ifdef __arch64__
static __inline__ void
stba(paddr_t loc, int asi, u_char value)
{
	__asm __volatile("wr %2,%%g0,%%asi; stba %0,[%1]%%asi; "
		" wr %%g0, 0x82, %%asi" : :
		"r" ((int)(value)), "r" ((unsigned long)(loc)),
		"r" (asi));
}
#else
static __inline__ void
stba(paddr_t loc, int asi, u_char value)
{
	register int _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %5,%%g0,%%asi; sllx %4,32,%0; "
" rdpr %%pstate,%1; or %3,%0,%0; wrpr %1,8,%%pstate; stba %2,[%0]%%asi; "
" wrpr %1,0,%%pstate; membar #Sync; wr %%g0, 0x82, %%asi" :
				 "=&r" (_loc_hi), "=&r" (_pstate) :
				 "r" ((int)(value)), "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi));
	} else {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" or %2,%0,%0; stba %1,[%0]%%asi; wr %%g0, 0x82, %%asi" : "=&r" (_loc_hi) :
				 "r" ((int)(value)), "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi));
	}
}
#endif

/* store half-word to alternate address space */
#ifdef __arch64__
static __inline__ void
stha(paddr_t loc, int asi, u_short value)
{
	__asm __volatile("wr %2,%%g0,%%asi; stha %0,[%1]%%asi; "
		" wr %%g0, 0x82, %%asi" : :
		"r" ((int)(value)), "r" ((unsigned long)(loc)),
		"r" (asi) : "memory");
}
#else
static __inline__ void
stha(paddr_t loc, int asi, u_short value)
{
	register int _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %5,%%g0,%%asi; sllx %4,32,%0; "
" rdpr %%pstate,%1; or %3,%0,%0; wrpr %1,8,%%pstate; stha %2,[%0]%%asi; "
" wrpr %1,0,%%pstate; membar #Sync; wr %%g0, 0x82, %%asi" :
			"=&r" (_loc_hi), "=&r" (_pstate) :
			"r" ((int)(value)), "r" ((unsigned long)(loc)),
			"r" (_loc_hi), "r" (asi) : "memory");
	} else {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" or %2,%0,%0; stha %1,[%0]%%asi; wr %%g0, 0x82, %%asi" : "=&r" (_loc_hi) :
				 "r" ((int)(value)), "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi) : "memory");
	}
}
#endif


/* store int to alternate address space */
#ifdef __arch64__
static __inline__ void
sta(paddr_t loc, int asi, u_int value)
{
	__asm __volatile("wr %2,%%g0,%%asi; sta %0,[%1]%%asi; "
		" wr %%g0, 0x82, %%asi" : :
		"r" ((int)(value)), "r" ((unsigned long)(loc)),
		"r" (asi) : "memory");
}
#else
static __inline__ void
sta(paddr_t loc, int asi, u_int value)
{
	register int _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %5,%%g0,%%asi; sllx %4,32,%0; "
" rdpr %%pstate,%1; or %3,%0,%0; wrpr %1,8,%%pstate; sta %2,[%0]%%asi; "
" wrpr %1,0,%%pstate; membar #Sync; wr %%g0, 0x82, %%asi" :
			"=&r" (_loc_hi), "=&r" (_pstate) :
			"r" ((int)(value)), "r" ((unsigned long)(loc)),
			"r" (_loc_hi), "r" (asi) : "memory");
	} else {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" or %2,%0,%0; sta %1,[%0]%%asi; wr %%g0, 0x82, %%asi" : "=&r" (_loc_hi) :
				 "r" ((int)(value)), "r" ((unsigned long)(loc)),
				 "r" (_loc_hi), "r" (asi) : "memory");
	}
}
#endif

/* store 64-bit int to alternate address space */
#ifdef __arch64__
static __inline__ void
stda(paddr_t loc, int asi, u_int64_t value)
{
	__asm __volatile("wr %2,%%g0,%%asi; stda %0,[%1]%%asi; "
		" wr %%g0, 0x82, %%asi" : :
		"r" ((long long)(value)), "r" ((unsigned long)(loc)),
		"r" (asi) : "memory");
}
#else
static __inline__ void
stda(paddr_t loc, int asi, u_int64_t value)
{
	register int _loc_hi, _pstate;

	_loc_hi = (((u_int64_t)loc)>>32);
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %5,%%g0,%%asi; sllx %4,32,%0; "
" rdpr %%pstate,%1; or %3,%0,%0; wrpr %1,8,%%pstate; stda %2,[%0]%%asi; "
" wrpr %1,0,%%pstate; membar #Sync;  wr %%g0, 0x82, %%asi" :
			"=&r" (_loc_hi), "=&r" (_pstate) :
			"r" ((long long)(value)), "r" ((unsigned long)(loc)),
			"r" (_loc_hi), "r" (asi) : "memory");
	} else {
		__asm __volatile("wr %4,%%g0,%%asi; sllx %3,32,%0; "
" or %2,%0,%0; stda %1,[%0]%%asi; wr %%g0, 0x82, %%asi" :
			"=&r" (_loc_hi) :
			"r" ((long long)(value)), "r" ((unsigned long)(loc)),
			"r" (_loc_hi), "r" (asi) : "memory");
	}
}
#endif

#ifdef __arch64__
/* native store 64-bit int to alternate address space w/64-bit compiler*/
static __inline__ void
stxa(paddr_t loc, int asi, u_int64_t value)
{
	__asm __volatile("wr %2,%%g0,%%asi; stxa %0,[%1]%%asi; "
		" wr %%g0, 0x82, %%asi" : :
		"r" ((unsigned long)(value)),
		"r" ((unsigned long)(loc)), "r" (asi) : "memory");
}
#else
/* native store 64-bit int to alternate address space w/32-bit compiler*/
static __inline__ void
stxa(paddr_t loc, int asi, u_int64_t value)
{
	int _stxa_lo, _stxa_hi, _loc_hi;

	_stxa_lo = value;
	_stxa_hi = ((u_int64_t)value)>>32;
	_loc_hi = (((u_int64_t)loc)>>32);

	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %7,%%g0,%%asi; sllx %4,32,%1; "
" sllx %6,32,%0;  or %1,%3,%1; rdpr %%pstate,%2; or %0,%5,%0; "
" wrpr %2,8,%%pstate; stxa %1,[%0]%%asi; wrpr %2,0,%%pstate; "
" membar #Sync; wr %%g0, 0x82, %%asi" :
				 "=&r" (_loc_hi), "=&r" (_stxa_hi),
				 "=&r" ((int)(_stxa_lo)) :
				 "r" ((int)(_stxa_lo)), "r" ((int)(_stxa_hi)),
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi) : "memory");
	} else {
		__asm __volatile("wr %6,%%g0,%%asi; sllx %3,32,%1; sllx %5,32,%0; "
" or %1,%2,%1; or %0,%4,%0; stxa %1,[%0]%%asi; wr %%g0, 0x82, %%asi" :
				 "=&r" (_loc_hi), "=&r" (_stxa_hi) :
				 "r" ((int)(_stxa_lo)), "r" ((int)(_stxa_hi)),
				 "r" ((unsigned long)(loc)), "r" (_loc_hi),
				 "r" (asi) : "memory");
	}
}
#endif

#if 0
#ifdef __arch64__
/* native store 64-bit int to alternate address space w/64-bit compiler*/
static __inline__ u_int64_t
casxa(paddr_t loc, int asi, u_int64_t value, u_int64_t oldvalue)
{
	__asm __volatile("wr %3,%%g0,%%asi; casxa [%1]%%asi,%2,%0; "
		" wr %%g0, 0x82, %%asi" :
		"+r" (value) :
		"r" ((unsigned long)(loc)), "r" (oldvalue), "r" (asi) :
		"memory");
	return (value);
}
#else
/* native store 64-bit int to alternate address space w/32-bit compiler*/
static __inline__ u_int64_t
casxa(paddr_t loc, int asi, u_int64_t value, u_int64_t oldvalue)
{
	int _casxa_lo, _casxa_hi, _loc_hi, _oval_hi;

	_casxa_lo = value;
	_casxa_hi = ((u_int64_t)value)>>32;
	_oval_hi = ((u_int64_t)oldvalue)>>32;
	_loc_hi = (((u_int64_t)loc)>>32);

#ifdef __notyet
/*
 * gcc cannot handle this since it thinks it has >10 asm operands.
 */
	if (PHYS_ASI(asi)) {
		__asm __volatile("wr %6,%%g0,%%asi; sllx %1,32,%1; rdpr %%pstate,%2; "
" sllx %0,32,%0; or %1,%2,%1; sllx %3,32,%3; or %0,%4,%0; or %3,%5,%3; "
" wrpr %2,8,%%pstate; casxa [%0]%%asi,%3,%1; wrpr %2,0,%%pstate; "
" andn %0,0x1f,%3; membar #Sync; "
" sll %1,0,%2; srax %1,32,%1; wr %%g0, 0x82, %%asi " :
			"+r" (_loc_hi), "+r" (_casxa_hi),
			"+r" (_casxa_lo), "+r" (_oval_hi) :
			"r" ((unsigned long)(loc)),
			"r" ((unsigned int)(oldvalue)),
			"r" (asi));
	} else {
		__asm __volatile("wr %7,%%g0,%%asi; sllx %1,32,%1; sllx %5,32,%0; "
" or %1,%2,%1; sllx %3,32,%2; or %0,%4,%0; or %2,%4,%2; "
" casxa [%0]%%asi,%2,%1; sll %1,0,%2; srax %o1,32,%o1; wr %%g0, 0x82, %%asi " :
			"=&r" (_loc_hi), "+r" (_casxa_hi), "+r" (_casxa_lo) :
			"r" ((int)(_oval_hi)), "r" ((int)(oldvalue)),
			"r" ((unsigned long)(loc)), "r" (_loc_hi),
			"r" (asi) : "memory");
	}
#endif
	return (((u_int64_t)_casxa_hi<<32)|(u_int64_t)_casxa_lo);
}
#endif
#endif /* 0 */



/* flush address from data cache */
#define	flush(loc) ({ \
	__asm __volatile("flush %0" : : \
	     "r" ((unsigned long)(loc))); \
})

/* Flush a D$ line */
#if 0
#define	flushline(loc) ({ \
	stxa(((paddr_t)loc)&(~0x1f), (ASI_DCACHE_TAG), 0); \
        membar_sync(); \
})
#else
#define	flushline(loc)
#endif

/* The following two enable or disable the dcache in the LSU control register */
#define	dcenable() ({ \
	int res; \
	__asm __volatile("ldxa [%%g0] %1,%0; or %0,%2,%0; stxa %0,[%%g0] %1; membar #Sync" \
		: "r" (res) : "n" (ASI_MCCR), "n" (MCCR_DCACHE_EN)); \
})
#define	dcdisable() ({ \
	int res; \
	__asm __volatile("ldxa [%%g0] %1,%0; andn %0,%2,%0; stxa %0,[%%g0] %1; membar #Sync" \
		: "r" (res) : "n" (ASI_MCCR), "n" (MCCR_DCACHE_EN)); \
})

/*
 * SPARC V9 memory barrier instructions.
 */
/* Make all stores complete before next store */
#define	membar_storestore() __asm __volatile("membar #StoreStore" : :)
/* Make all loads complete before next store */
#define	membar_loadstore() __asm __volatile("membar #LoadStore" : :)
/* Make all stores complete before next load */
#define	membar_storeload() __asm __volatile("membar #StoreLoad" : :)
/* Make all loads complete before next load */
#define	membar_loadload() __asm __volatile("membar #LoadLoad" : :)
/* Complete all outstanding memory operations and exceptions */
#define	membar_sync() __asm __volatile("membar #Sync" : :)
/* Complete all outstanding memory operations */
#define	membar_memissue() __asm __volatile("membar #MemIssue" : :)
/* Complete all outstanding stores before any new loads */
#define	membar_lookaside() __asm __volatile("membar #Lookaside" : :)

#ifdef __arch64__
/* read 64-bit %tick register */
#define	tick() ({ \
	register u_long _tick_tmp; \
	__asm __volatile("rdpr %%tick, %0" : "=r" (_tick_tmp) :); \
	_tick_tmp; \
})
#else
/* read 64-bit %tick register on 32-bit system */
#define	tick() ({ \
	register u_int _tick_hi = 0, _tick_lo = 0; \
	__asm __volatile("rdpr %%tick, %0; srl %0,0,%1; srlx %0,32,%0 " \
		: "=r" (_tick_hi), "=r" (_tick_lo) : ); \
	(((u_int64_t)_tick_hi)<<32)|((u_int64_t)_tick_lo); \
})
#endif

extern void next_tick __P((long));
#endif