18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* Copyright (C) 2020 ARM Limited */ 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci/* 58c2ecf20Sopenharmony_ci * Below definitions may be found in kernel headers, However, they are 68c2ecf20Sopenharmony_ci * redefined here to decouple the MTE selftests compilations from them. 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci#ifndef SEGV_MTEAERR 98c2ecf20Sopenharmony_ci#define SEGV_MTEAERR 8 108c2ecf20Sopenharmony_ci#endif 118c2ecf20Sopenharmony_ci#ifndef SEGV_MTESERR 128c2ecf20Sopenharmony_ci#define SEGV_MTESERR 9 138c2ecf20Sopenharmony_ci#endif 148c2ecf20Sopenharmony_ci#ifndef PROT_MTE 158c2ecf20Sopenharmony_ci#define PROT_MTE 0x20 168c2ecf20Sopenharmony_ci#endif 178c2ecf20Sopenharmony_ci#ifndef HWCAP2_MTE 188c2ecf20Sopenharmony_ci#define HWCAP2_MTE (1 << 18) 198c2ecf20Sopenharmony_ci#endif 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#ifndef PR_MTE_TCF_SHIFT 228c2ecf20Sopenharmony_ci#define PR_MTE_TCF_SHIFT 1 238c2ecf20Sopenharmony_ci#endif 248c2ecf20Sopenharmony_ci#ifndef PR_MTE_TCF_NONE 258c2ecf20Sopenharmony_ci#define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 268c2ecf20Sopenharmony_ci#endif 278c2ecf20Sopenharmony_ci#ifndef PR_MTE_TCF_SYNC 288c2ecf20Sopenharmony_ci#define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 298c2ecf20Sopenharmony_ci#endif 308c2ecf20Sopenharmony_ci#ifndef PR_MTE_TCF_ASYNC 318c2ecf20Sopenharmony_ci#define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 328c2ecf20Sopenharmony_ci#endif 338c2ecf20Sopenharmony_ci#ifndef PR_MTE_TAG_SHIFT 348c2ecf20Sopenharmony_ci#define PR_MTE_TAG_SHIFT 3 358c2ecf20Sopenharmony_ci#endif 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci/* MTE Hardware feature definitions below. */ 388c2ecf20Sopenharmony_ci#define MT_TAG_SHIFT 56 398c2ecf20Sopenharmony_ci#define MT_TAG_MASK 0xFUL 408c2ecf20Sopenharmony_ci#define MT_FREE_TAG 0x0UL 418c2ecf20Sopenharmony_ci#define MT_GRANULE_SIZE 16 428c2ecf20Sopenharmony_ci#define MT_TAG_COUNT 16 438c2ecf20Sopenharmony_ci#define MT_INCLUDE_TAG_MASK 0xFFFF 448c2ecf20Sopenharmony_ci#define MT_EXCLUDE_TAG_MASK 0x0 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_ci#define MT_ALIGN_GRANULE (MT_GRANULE_SIZE - 1) 478c2ecf20Sopenharmony_ci#define MT_CLEAR_TAG(x) ((x) & ~(MT_TAG_MASK << MT_TAG_SHIFT)) 488c2ecf20Sopenharmony_ci#define MT_SET_TAG(x, y) ((x) | (y << MT_TAG_SHIFT)) 498c2ecf20Sopenharmony_ci#define MT_FETCH_TAG(x) ((x >> MT_TAG_SHIFT) & (MT_TAG_MASK)) 508c2ecf20Sopenharmony_ci#define MT_ALIGN_UP(x) ((x + MT_ALIGN_GRANULE) & ~(MT_ALIGN_GRANULE)) 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_ci#define MT_PSTATE_TCO_SHIFT 25 538c2ecf20Sopenharmony_ci#define MT_PSTATE_TCO_MASK ~(0x1 << MT_PSTATE_TCO_SHIFT) 548c2ecf20Sopenharmony_ci#define MT_PSTATE_TCO_EN 1 558c2ecf20Sopenharmony_ci#define MT_PSTATE_TCO_DIS 0 568c2ecf20Sopenharmony_ci 578c2ecf20Sopenharmony_ci#define MT_EXCLUDE_TAG(x) (1 << (x)) 588c2ecf20Sopenharmony_ci#define MT_INCLUDE_VALID_TAG(x) (MT_INCLUDE_TAG_MASK ^ MT_EXCLUDE_TAG(x)) 598c2ecf20Sopenharmony_ci#define MT_INCLUDE_VALID_TAGS(x) (MT_INCLUDE_TAG_MASK ^ (x)) 608c2ecf20Sopenharmony_ci#define MTE_ALLOW_NON_ZERO_TAG MT_INCLUDE_VALID_TAG(0) 61