1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright (C) 2020 ARM Limited */ 3 4/* 5 * Below definitions may be found in kernel headers, However, they are 6 * redefined here to decouple the MTE selftests compilations from them. 7 */ 8#ifndef SEGV_MTEAERR 9#define SEGV_MTEAERR 8 10#endif 11#ifndef SEGV_MTESERR 12#define SEGV_MTESERR 9 13#endif 14#ifndef PROT_MTE 15#define PROT_MTE 0x20 16#endif 17#ifndef HWCAP2_MTE 18#define HWCAP2_MTE (1 << 18) 19#endif 20 21#ifndef PR_MTE_TCF_SHIFT 22#define PR_MTE_TCF_SHIFT 1 23#endif 24#ifndef PR_MTE_TCF_NONE 25#define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 26#endif 27#ifndef PR_MTE_TCF_SYNC 28#define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 29#endif 30#ifndef PR_MTE_TCF_ASYNC 31#define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 32#endif 33#ifndef PR_MTE_TAG_SHIFT 34#define PR_MTE_TAG_SHIFT 3 35#endif 36 37/* MTE Hardware feature definitions below. */ 38#define MT_TAG_SHIFT 56 39#define MT_TAG_MASK 0xFUL 40#define MT_FREE_TAG 0x0UL 41#define MT_GRANULE_SIZE 16 42#define MT_TAG_COUNT 16 43#define MT_INCLUDE_TAG_MASK 0xFFFF 44#define MT_EXCLUDE_TAG_MASK 0x0 45 46#define MT_ALIGN_GRANULE (MT_GRANULE_SIZE - 1) 47#define MT_CLEAR_TAG(x) ((x) & ~(MT_TAG_MASK << MT_TAG_SHIFT)) 48#define MT_SET_TAG(x, y) ((x) | (y << MT_TAG_SHIFT)) 49#define MT_FETCH_TAG(x) ((x >> MT_TAG_SHIFT) & (MT_TAG_MASK)) 50#define MT_ALIGN_UP(x) ((x + MT_ALIGN_GRANULE) & ~(MT_ALIGN_GRANULE)) 51 52#define MT_PSTATE_TCO_SHIFT 25 53#define MT_PSTATE_TCO_MASK ~(0x1 << MT_PSTATE_TCO_SHIFT) 54#define MT_PSTATE_TCO_EN 1 55#define MT_PSTATE_TCO_DIS 0 56 57#define MT_EXCLUDE_TAG(x) (1 << (x)) 58#define MT_INCLUDE_VALID_TAG(x) (MT_INCLUDE_TAG_MASK ^ MT_EXCLUDE_TAG(x)) 59#define MT_INCLUDE_VALID_TAGS(x) (MT_INCLUDE_TAG_MASK ^ (x)) 60#define MTE_ALLOW_NON_ZERO_TAG MT_INCLUDE_VALID_TAG(0) 61