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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ecc.h: Definitions and defines for the external cache/memory
* controller on the sun4m.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC_ECC_H
#define _SPARC_ECC_H
/* These registers are accessed through the SRMMU passthrough ASI 0x20 */
#define ECC_ENABLE 0x00000000 /* ECC enable register */
#define ECC_FSTATUS 0x00000008 /* ECC fault status register */
#define ECC_FADDR 0x00000010 /* ECC fault address register */
#define ECC_DIGNOSTIC 0x00000018 /* ECC diagnostics register */
#define ECC_MBAENAB 0x00000020 /* MBus arbiter enable register */
#define ECC_DMESG 0x00001000 /* Diagnostic message passing area */
/* ECC MBus Arbiter Enable register:
*
* ----------------------------------------
* | |SBUS|MOD3|MOD2|MOD1|RSV|
* ----------------------------------------
* 31 5 4 3 2 1 0
*
* SBUS: Enable MBus Arbiter on the SBus 0=off 1=on
* MOD3: Enable MBus Arbiter on MBus module 3 0=off 1=on
* MOD2: Enable MBus Arbiter on MBus module 2 0=off 1=on
* MOD1: Enable MBus Arbiter on MBus module 1 0=off 1=on
*/
#define ECC_MBAE_SBUS 0x00000010
#define ECC_MBAE_MOD3 0x00000008
#define ECC_MBAE_MOD2 0x00000004
#define ECC_MBAE_MOD1 0x00000002
/* ECC Fault Control Register layout:
*
* -----------------------------
* | RESV | ECHECK | EINT |
* -----------------------------
* 31 2 1 0
*
* ECHECK: Enable ECC checking. 0=off 1=on
* EINT: Enable Interrupts for correctable errors. 0=off 1=on
*/
#define ECC_FCR_CHECK 0x00000002
#define ECC_FCR_INTENAB 0x00000001
/* ECC Fault Address Register Zero layout:
*
* -----------------------------------------------------
* | MID | S | RSV | VA | BM |AT| C| SZ |TYP| PADDR |
* -----------------------------------------------------
* 31-28 27 26-22 21-14 13 12 11 10-8 7-4 3-0
*
* MID: ModuleID of the faulting processor. ie. who did it?
* S: Supervisor/Privileged access? 0=no 1=yes
* VA: Bits 19-12 of the virtual faulting address, these are the
* superset bits in the virtual cache and can be used for
* a flush operation if necessary.
* BM: Boot mode? 0=no 1=yes This is just like the SRMMU boot
* mode bit.
* AT: Did this fault happen during an atomic instruction? 0=no
* 1=yes. This means either an 'ldstub' or 'swap' instruction
* was in progress (but not finished) when this fault happened.
* This indicated whether the bus was locked when the fault
* occurred.
* C: Did the pte for this access indicate that it was cacheable?
* 0=no 1=yes
* SZ: The size of the transaction.
* TYP: The transaction type.
* PADDR: Bits 35-32 of the physical address for the fault.
*/
#define ECC_FADDR0_MIDMASK 0xf0000000
#define ECC_FADDR0_S 0x08000000
#define ECC_FADDR0_VADDR 0x003fc000
#define ECC_FADDR0_BMODE 0x00002000
#define ECC_FADDR0_ATOMIC 0x00001000
#define ECC_FADDR0_CACHE 0x00000800
#define ECC_FADDR0_SIZE 0x00000700
#define ECC_FADDR0_TYPE 0x000000f0
#define ECC_FADDR0_PADDR 0x0000000f
/* ECC Fault Address Register One layout:
*
* -------------------------------------
* | Physical Address 31-0 |
* -------------------------------------
* 31 0
*
* You get the upper 4 bits of the physical address from the
* PADDR field in ECC Fault Address Zero register.
*/
/* ECC Fault Status Register layout:
*
* ----------------------------------------------
* | RESV|C2E|MULT|SYNDROME|DWORD|UNC|TIMEO|BS|C|
* ----------------------------------------------
* 31-18 17 16 15-8 7-4 3 2 1 0
*
* C2E: A C2 graphics error occurred. 0=no 1=yes (SS10 only)
* MULT: Multiple errors occurred ;-O 0=no 1=prom_panic(yes)
* SYNDROME: Controller is mentally unstable.
* DWORD:
* UNC: Uncorrectable error. 0=no 1=yes
* TIMEO: Timeout occurred. 0=no 1=yes
* BS: C2 graphics bad slot access. 0=no 1=yes (SS10 only)
* C: Correctable error? 0=no 1=yes
*/
#define ECC_FSR_C2ERR 0x00020000
#define ECC_FSR_MULT 0x00010000
#define ECC_FSR_SYND 0x0000ff00
#define ECC_FSR_DWORD 0x000000f0
#define ECC_FSR_UNC 0x00000008
#define ECC_FSR_TIMEO 0x00000004
#define ECC_FSR_BADSLOT 0x00000002
#define ECC_FSR_C 0x00000001
#endif /* !(_SPARC_ECC_H) */
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