| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: ecc.h,v 1.3 1996/04/25 06:12:57 davem Exp $ |
| 2 | * ecc.h: Definitions and defines for the external cache/memory |
| 3 | * controller on the sun4m. |
| 4 | * |
| 5 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| 6 | */ |
| 7 | |
| 8 | #ifndef _SPARC_ECC_H |
| 9 | #define _SPARC_ECC_H |
| 10 | |
| 11 | /* These registers are accessed through the SRMMU passthrough ASI 0x20 */ |
| 12 | #define ECC_ENABLE 0x00000000 /* ECC enable register */ |
| 13 | #define ECC_FSTATUS 0x00000008 /* ECC fault status register */ |
| 14 | #define ECC_FADDR 0x00000010 /* ECC fault address register */ |
| 15 | #define ECC_DIGNOSTIC 0x00000018 /* ECC diagnostics register */ |
| 16 | #define ECC_MBAENAB 0x00000020 /* MBus arbiter enable register */ |
| 17 | #define ECC_DMESG 0x00001000 /* Diagnostic message passing area */ |
| 18 | |
| 19 | /* ECC MBus Arbiter Enable register: |
| 20 | * |
| 21 | * ---------------------------------------- |
| 22 | * | |SBUS|MOD3|MOD2|MOD1|RSV| |
| 23 | * ---------------------------------------- |
| 24 | * 31 5 4 3 2 1 0 |
| 25 | * |
| 26 | * SBUS: Enable MBus Arbiter on the SBus 0=off 1=on |
| 27 | * MOD3: Enable MBus Arbiter on MBus module 3 0=off 1=on |
| 28 | * MOD2: Enable MBus Arbiter on MBus module 2 0=off 1=on |
| 29 | * MOD1: Enable MBus Arbiter on MBus module 1 0=off 1=on |
| 30 | */ |
| 31 | |
| 32 | #define ECC_MBAE_SBUS 0x00000010 |
| 33 | #define ECC_MBAE_MOD3 0x00000008 |
| 34 | #define ECC_MBAE_MOD2 0x00000004 |
| 35 | #define ECC_MBAE_MOD1 0x00000002 |
| 36 | |
| 37 | /* ECC Fault Control Register layout: |
| 38 | * |
| 39 | * ----------------------------- |
| 40 | * | RESV | ECHECK | EINT | |
| 41 | * ----------------------------- |
| 42 | * 31 2 1 0 |
| 43 | * |
| 44 | * ECHECK: Enable ECC checking. 0=off 1=on |
| 45 | * EINT: Enable Interrupts for correctable errors. 0=off 1=on |
| 46 | */ |
| 47 | #define ECC_FCR_CHECK 0x00000002 |
| 48 | #define ECC_FCR_INTENAB 0x00000001 |
| 49 | |
| 50 | /* ECC Fault Address Register Zero layout: |
| 51 | * |
| 52 | * ----------------------------------------------------- |
| 53 | * | MID | S | RSV | VA | BM |AT| C| SZ |TYP| PADDR | |
| 54 | * ----------------------------------------------------- |
| 55 | * 31-28 27 26-22 21-14 13 12 11 10-8 7-4 3-0 |
| 56 | * |
| 57 | * MID: ModuleID of the faulting processor. ie. who did it? |
| 58 | * S: Supervisor/Privileged access? 0=no 1=yes |
| 59 | * VA: Bits 19-12 of the virtual faulting address, these are the |
| 60 | * superset bits in the virtual cache and can be used for |
| 61 | * a flush operation if necessary. |
| 62 | * BM: Boot mode? 0=no 1=yes This is just like the SRMMU boot |
| 63 | * mode bit. |
| 64 | * AT: Did this fault happen during an atomic instruction? 0=no |
| 65 | * 1=yes. This means either an 'ldstub' or 'swap' instruction |
| 66 | * was in progress (but not finished) when this fault happened. |
| 67 | * This indicated whether the bus was locked when the fault |
| 68 | * occurred. |
| 69 | * C: Did the pte for this access indicate that it was cacheable? |
| 70 | * 0=no 1=yes |
| 71 | * SZ: The size of the transaction. |
| 72 | * TYP: The transaction type. |
| 73 | * PADDR: Bits 35-32 of the physical address for the fault. |
| 74 | */ |
| 75 | #define ECC_FADDR0_MIDMASK 0xf0000000 |
| 76 | #define ECC_FADDR0_S 0x08000000 |
| 77 | #define ECC_FADDR0_VADDR 0x003fc000 |
| 78 | #define ECC_FADDR0_BMODE 0x00002000 |
| 79 | #define ECC_FADDR0_ATOMIC 0x00001000 |
| 80 | #define ECC_FADDR0_CACHE 0x00000800 |
| 81 | #define ECC_FADDR0_SIZE 0x00000700 |
| 82 | #define ECC_FADDR0_TYPE 0x000000f0 |
| 83 | #define ECC_FADDR0_PADDR 0x0000000f |
| 84 | |
| 85 | /* ECC Fault Address Register One layout: |
| 86 | * |
| 87 | * ------------------------------------- |
| 88 | * | Physical Address 31-0 | |
| 89 | * ------------------------------------- |
| 90 | * 31 0 |
| 91 | * |
| 92 | * You get the upper 4 bits of the physical address from the |
| 93 | * PADDR field in ECC Fault Address Zero register. |
| 94 | */ |
| 95 | |
| 96 | /* ECC Fault Status Register layout: |
| 97 | * |
| 98 | * ---------------------------------------------- |
| 99 | * | RESV|C2E|MULT|SYNDROME|DWORD|UNC|TIMEO|BS|C| |
| 100 | * ---------------------------------------------- |
| 101 | * 31-18 17 16 15-8 7-4 3 2 1 0 |
| 102 | * |
| 103 | * C2E: A C2 graphics error occurred. 0=no 1=yes (SS10 only) |
| 104 | * MULT: Multiple errors occurred ;-O 0=no 1=prom_panic(yes) |
| 105 | * SYNDROME: Controller is mentally unstable. |
| 106 | * DWORD: |
| 107 | * UNC: Uncorrectable error. 0=no 1=yes |
| 108 | * TIMEO: Timeout occurred. 0=no 1=yes |
| 109 | * BS: C2 graphics bad slot access. 0=no 1=yes (SS10 only) |
| 110 | * C: Correctable error? 0=no 1=yes |
| 111 | */ |
| 112 | |
| 113 | #define ECC_FSR_C2ERR 0x00020000 |
| 114 | #define ECC_FSR_MULT 0x00010000 |
| 115 | #define ECC_FSR_SYND 0x0000ff00 |
| 116 | #define ECC_FSR_DWORD 0x000000f0 |
| 117 | #define ECC_FSR_UNC 0x00000008 |
| 118 | #define ECC_FSR_TIMEO 0x00000004 |
| 119 | #define ECC_FSR_BADSLOT 0x00000002 |
| 120 | #define ECC_FSR_C 0x00000001 |
| 121 | |
| 122 | #endif /* !(_SPARC_ECC_H) */ |