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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $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 */