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/* $Id: asi.h,v 1.16 1996/04/25 06:12:43 davem Exp $ */
#ifndef _SPARC_ASI_H
#define _SPARC_ASI_H
/* asi.h: Address Space Identifier values for the sparc.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*
* Pioneer work for sun4m: Paul Hatchman (paul@sfe.com.au)
* Joint edition for sun4c+sun4m: Pete A. Zaitcev <zaitcev@ipmce.su>
*/
/* The first batch are for the sun4c. */
#define ASI_NULL1 0x00
#define ASI_NULL2 0x01
/* sun4c and sun4 control registers and mmu/vac ops */
#define ASI_CONTROL 0x02
#define ASI_SEGMAP 0x03
#define ASI_PTE 0x04
#define ASI_HWFLUSHSEG 0x05
#define ASI_HWFLUSHPAGE 0x06
#define ASI_REGMAP 0x06
#define ASI_HWFLUSHCONTEXT 0x07
#define ASI_USERTXT 0x08
#define ASI_KERNELTXT 0x09
#define ASI_USERDATA 0x0a
#define ASI_KERNELDATA 0x0b
/* VAC Cache flushing on sun4c and sun4 */
#define ASI_FLUSHSEG 0x0c
#define ASI_FLUSHPG 0x0d
#define ASI_FLUSHCTX 0x0e
/* SPARCstation-5: only 6 bits are decoded. */
/* wo = Write Only, rw = Read Write; */
/* ss = Single Size, as = All Sizes; */
#define ASI_M_RES00 0x00 /* Don't touch... */
#define ASI_M_UNA01 0x01 /* Same here... */
#define ASI_M_MXCC 0x02 /* Access to TI VIKING MXCC registers */
#define ASI_M_FLUSH_PROBE 0x03 /* Reference MMU Flush/Probe; rw, ss */
#define ASI_M_MMUREGS 0x04 /* MMU Registers; rw, ss */
#define ASI_M_TLBDIAG 0x05 /* MMU TLB only Diagnostics */
#define ASI_M_DIAGS 0x06 /* Reference MMU Diagnostics */
#define ASI_M_IODIAG 0x07 /* MMU I/O TLB only Diagnostics */
#define ASI_M_USERTXT 0x08 /* Same as ASI_USERTXT; rw, as */
#define ASI_M_KERNELTXT 0x09 /* Same as ASI_KERNELTXT; rw, as */
#define ASI_M_USERDATA 0x0A /* Same as ASI_USERDATA; rw, as */
#define ASI_M_KERNELDATA 0x0B /* Same as ASI_KERNELDATA; rw, as */
#define ASI_M_TXTC_TAG 0x0C /* Instruction Cache Tag; rw, ss */
#define ASI_M_TXTC_DATA 0x0D /* Instruction Cache Data; rw, ss */
#define ASI_M_DATAC_TAG 0x0E /* Data Cache Tag; rw, ss */
#define ASI_M_DATAC_DATA 0x0F /* Data Cache Data; rw, ss */
/* The following cache flushing ASIs work only with the 'sta'
* instruction. Results are unpredictable for 'swap' and 'ldstuba',
* so don't do it.
*/
/* These ASI flushes affect external caches too. */
#define ASI_M_FLUSH_PAGE 0x10 /* Flush I&D Cache Line (page); wo, ss */
#define ASI_M_FLUSH_SEG 0x11 /* Flush I&D Cache Line (seg); wo, ss */
#define ASI_M_FLUSH_REGION 0x12 /* Flush I&D Cache Line (region); wo, ss */
#define ASI_M_FLUSH_CTX 0x13 /* Flush I&D Cache Line (context); wo, ss */
#define ASI_M_FLUSH_USER 0x14 /* Flush I&D Cache Line (user); wo, ss */
/* Block-copy operations are available only on certain V8 cpus. */
#define ASI_M_BCOPY 0x17 /* Block copy */
/* These affect only the ICACHE and are Ross HyperSparc specific. */
#define ASI_M_IFLUSH_PAGE 0x18 /* Flush I Cache Line (page); wo, ss */
#define ASI_M_IFLUSH_SEG 0x19 /* Flush I Cache Line (seg); wo, ss */
#define ASI_M_IFLUSH_REGION 0x1A /* Flush I Cache Line (region); wo, ss */
#define ASI_M_IFLUSH_CTX 0x1B /* Flush I Cache Line (context); wo, ss */
#define ASI_M_IFLUSH_USER 0x1C /* Flush I Cache Line (user); wo, ss */
/* Block-fill operations are available on certain V8 cpus */
#define ASI_M_BFILL 0x1F
/* This allows direct access to main memory, actually 0x20 to 0x2f are
* the available ASI's for physical ram pass-through, but I don't have
* any idea what the other ones do....
*/
#define ASI_M_BYPASS 0x20 /* Reference MMU bypass; rw, as */
#define ASI_M_FBMEM 0x29 /* Graphics card frame buffer access */
#define ASI_M_VMEUS 0x2A /* VME user 16-bit access */
#define ASI_M_VMEPS 0x2B /* VME priv 16-bit access */
#define ASI_M_VMEUT 0x2C /* VME user 32-bit access */
#define ASI_M_VMEPT 0x2D /* VME priv 32-bit access */
#define ASI_M_SBUS 0x2E /* Direct SBus access */
#define ASI_M_CTL 0x2F /* Control Space (ECC and MXCC are here) */
/* This is ROSS HyperSparc only. */
#define ASI_M_FLUSH_IWHOLE 0x31 /* Flush entire ICACHE; wo, ss */
/* Tsunami/Viking i/d cache flash clear. */
#define ASI_M_IC_FLCLEAR 0x36
#define ASI_M_DC_FLCLEAR 0x37
#define ASI_M_DCDR 0x39 /* Data Cache Diagnostics Register rw, ss */
#define ASI_M_ACTION 0x4c /* Breakpoint Action Register (GNU/Viking) */
#endif /* _SPARC_ASI_H */
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