| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* $Id: asi.h,v 1.18 1998/03/09 14:04:46 jj Exp $ */ |
| 2 | #ifndef _SPARC_ASI_H |
| 3 | #define _SPARC_ASI_H |
| 4 | |
| 5 | /* asi.h: Address Space Identifier values for the sparc. |
| 6 | * |
| 7 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| 8 | * |
| 9 | * Pioneer work for sun4m: Paul Hatchman (paul@sfe.com.au) |
| 10 | * Joint edition for sun4c+sun4m: Pete A. Zaitcev <zaitcev@ipmce.su> |
| 11 | */ |
| 12 | |
| 13 | /* The first batch are for the sun4c. */ |
| 14 | |
| 15 | #define ASI_NULL1 0x00 |
| 16 | #define ASI_NULL2 0x01 |
| 17 | |
| 18 | /* sun4c and sun4 control registers and mmu/vac ops */ |
| 19 | #define ASI_CONTROL 0x02 |
| 20 | #define ASI_SEGMAP 0x03 |
| 21 | #define ASI_PTE 0x04 |
| 22 | #define ASI_HWFLUSHSEG 0x05 |
| 23 | #define ASI_HWFLUSHPAGE 0x06 |
| 24 | #define ASI_REGMAP 0x06 |
| 25 | #define ASI_HWFLUSHCONTEXT 0x07 |
| 26 | |
| 27 | #define ASI_USERTXT 0x08 |
| 28 | #define ASI_KERNELTXT 0x09 |
| 29 | #define ASI_USERDATA 0x0a |
| 30 | #define ASI_KERNELDATA 0x0b |
| 31 | |
| 32 | /* VAC Cache flushing on sun4c and sun4 */ |
| 33 | #define ASI_FLUSHSEG 0x0c |
| 34 | #define ASI_FLUSHPG 0x0d |
| 35 | #define ASI_FLUSHCTX 0x0e |
| 36 | |
| 37 | /* SPARCstation-5: only 6 bits are decoded. */ |
| 38 | /* wo = Write Only, rw = Read Write; */ |
| 39 | /* ss = Single Size, as = All Sizes; */ |
| 40 | #define ASI_M_RES00 0x00 /* Don't touch... */ |
| 41 | #define ASI_M_UNA01 0x01 /* Same here... */ |
| 42 | #define ASI_M_MXCC 0x02 /* Access to TI VIKING MXCC registers */ |
| 43 | #define ASI_M_FLUSH_PROBE 0x03 /* Reference MMU Flush/Probe; rw, ss */ |
| 44 | #define ASI_M_MMUREGS 0x04 /* MMU Registers; rw, ss */ |
| 45 | #define ASI_M_TLBDIAG 0x05 /* MMU TLB only Diagnostics */ |
| 46 | #define ASI_M_DIAGS 0x06 /* Reference MMU Diagnostics */ |
| 47 | #define ASI_M_IODIAG 0x07 /* MMU I/O TLB only Diagnostics */ |
| 48 | #define ASI_M_USERTXT 0x08 /* Same as ASI_USERTXT; rw, as */ |
| 49 | #define ASI_M_KERNELTXT 0x09 /* Same as ASI_KERNELTXT; rw, as */ |
| 50 | #define ASI_M_USERDATA 0x0A /* Same as ASI_USERDATA; rw, as */ |
| 51 | #define ASI_M_KERNELDATA 0x0B /* Same as ASI_KERNELDATA; rw, as */ |
| 52 | #define ASI_M_TXTC_TAG 0x0C /* Instruction Cache Tag; rw, ss */ |
| 53 | #define ASI_M_TXTC_DATA 0x0D /* Instruction Cache Data; rw, ss */ |
| 54 | #define ASI_M_DATAC_TAG 0x0E /* Data Cache Tag; rw, ss */ |
| 55 | #define ASI_M_DATAC_DATA 0x0F /* Data Cache Data; rw, ss */ |
| 56 | |
| 57 | /* The following cache flushing ASIs work only with the 'sta' |
| 58 | * instruction. Results are unpredictable for 'swap' and 'ldstuba', |
| 59 | * so don't do it. |
| 60 | */ |
| 61 | |
| 62 | /* These ASI flushes affect external caches too. */ |
| 63 | #define ASI_M_FLUSH_PAGE 0x10 /* Flush I&D Cache Line (page); wo, ss */ |
| 64 | #define ASI_M_FLUSH_SEG 0x11 /* Flush I&D Cache Line (seg); wo, ss */ |
| 65 | #define ASI_M_FLUSH_REGION 0x12 /* Flush I&D Cache Line (region); wo, ss */ |
| 66 | #define ASI_M_FLUSH_CTX 0x13 /* Flush I&D Cache Line (context); wo, ss */ |
| 67 | #define ASI_M_FLUSH_USER 0x14 /* Flush I&D Cache Line (user); wo, ss */ |
| 68 | |
| 69 | /* Block-copy operations are available only on certain V8 cpus. */ |
| 70 | #define ASI_M_BCOPY 0x17 /* Block copy */ |
| 71 | |
| 72 | /* These affect only the ICACHE and are Ross HyperSparc and TurboSparc specific. */ |
| 73 | #define ASI_M_IFLUSH_PAGE 0x18 /* Flush I Cache Line (page); wo, ss */ |
| 74 | #define ASI_M_IFLUSH_SEG 0x19 /* Flush I Cache Line (seg); wo, ss */ |
| 75 | #define ASI_M_IFLUSH_REGION 0x1A /* Flush I Cache Line (region); wo, ss */ |
| 76 | #define ASI_M_IFLUSH_CTX 0x1B /* Flush I Cache Line (context); wo, ss */ |
| 77 | #define ASI_M_IFLUSH_USER 0x1C /* Flush I Cache Line (user); wo, ss */ |
| 78 | |
| 79 | /* Block-fill operations are available on certain V8 cpus */ |
| 80 | #define ASI_M_BFILL 0x1F |
| 81 | |
| 82 | /* This allows direct access to main memory, actually 0x20 to 0x2f are |
| 83 | * the available ASI's for physical ram pass-through, but I don't have |
| 84 | * any idea what the other ones do.... |
| 85 | */ |
| 86 | |
| 87 | #define ASI_M_BYPASS 0x20 /* Reference MMU bypass; rw, as */ |
| 88 | #define ASI_M_FBMEM 0x29 /* Graphics card frame buffer access */ |
| 89 | #define ASI_M_VMEUS 0x2A /* VME user 16-bit access */ |
| 90 | #define ASI_M_VMEPS 0x2B /* VME priv 16-bit access */ |
| 91 | #define ASI_M_VMEUT 0x2C /* VME user 32-bit access */ |
| 92 | #define ASI_M_VMEPT 0x2D /* VME priv 32-bit access */ |
| 93 | #define ASI_M_SBUS 0x2E /* Direct SBus access */ |
| 94 | #define ASI_M_CTL 0x2F /* Control Space (ECC and MXCC are here) */ |
| 95 | |
| 96 | |
| 97 | /* This is ROSS HyperSparc only. */ |
| 98 | #define ASI_M_FLUSH_IWHOLE 0x31 /* Flush entire ICACHE; wo, ss */ |
| 99 | |
| 100 | /* Tsunami/Viking/TurboSparc i/d cache flash clear. */ |
| 101 | #define ASI_M_IC_FLCLEAR 0x36 |
| 102 | #define ASI_M_DC_FLCLEAR 0x37 |
| 103 | |
| 104 | #define ASI_M_DCDR 0x39 /* Data Cache Diagnostics Register rw, ss */ |
| 105 | |
| 106 | #define ASI_M_VIKING_TMP1 0x40 /* Emulation temporary 1 on Viking */ |
| 107 | /* only available on SuperSparc I */ |
| 108 | /* #define ASI_M_VIKING_TMP2 0x41 */ /* Emulation temporary 2 on Viking */ |
| 109 | |
| 110 | #define ASI_M_ACTION 0x4c /* Breakpoint Action Register (GNU/Viking) */ |
| 111 | |
| 112 | #endif /* _SPARC_ASI_H */ |