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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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ed434c6e08
Add address tag related macro and function to test MTE_FAR feature. Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20250618084513.1761345-8-yeoreum.yun@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2020 ARM Limited */
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/*
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* Below definitions may be found in kernel headers, However, they are
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* redefined here to decouple the MTE selftests compilations from them.
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*/
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#ifndef SEGV_MTEAERR
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#define SEGV_MTEAERR 8
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#endif
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#ifndef SEGV_MTESERR
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#define SEGV_MTESERR 9
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#endif
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#ifndef PROT_MTE
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#define PROT_MTE 0x20
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#endif
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#ifndef HWCAP2_MTE
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#define HWCAP2_MTE (1 << 18)
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#endif
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#ifndef PR_MTE_TCF_SHIFT
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#define PR_MTE_TCF_SHIFT 1
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#endif
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#ifndef PR_MTE_TCF_NONE
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#define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
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#endif
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#ifndef PR_MTE_TCF_SYNC
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#define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
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#endif
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#ifndef PR_MTE_TCF_ASYNC
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#define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
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#endif
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#ifndef PR_MTE_TAG_SHIFT
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#define PR_MTE_TAG_SHIFT 3
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#endif
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/* MTE Hardware feature definitions below. */
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#define MT_TAG_SHIFT 56
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#define MT_TAG_MASK 0xFUL
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#define MT_FREE_TAG 0x0UL
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#define MT_GRANULE_SIZE 16
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#define MT_TAG_COUNT 16
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#define MT_INCLUDE_TAG_MASK 0xFFFF
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#define MT_EXCLUDE_TAG_MASK 0x0
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#define MT_ATAG_SHIFT 60
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#define MT_ATAG_MASK 0xFUL
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#define MT_ALIGN_GRANULE (MT_GRANULE_SIZE - 1)
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#define MT_CLEAR_TAG(x) ((x) & ~(MT_TAG_MASK << MT_TAG_SHIFT))
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#define MT_SET_TAG(x, y) ((x) | (y << MT_TAG_SHIFT))
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#define MT_FETCH_TAG(x) ((x >> MT_TAG_SHIFT) & (MT_TAG_MASK))
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#define MT_ALIGN_UP(x) ((x + MT_ALIGN_GRANULE) & ~(MT_ALIGN_GRANULE))
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#define MT_CLEAR_ATAG(x) ((x) & ~(MT_TAG_MASK << MT_ATAG_SHIFT))
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#define MT_SET_ATAG(x, y) ((x) | (((y) & MT_ATAG_MASK) << MT_ATAG_SHIFT))
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#define MT_FETCH_ATAG(x) ((x >> MT_ATAG_SHIFT) & (MT_ATAG_MASK))
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#define MT_CLEAR_TAGS(x) (MT_CLEAR_ATAG(MT_CLEAR_TAG(x)))
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#define MT_PSTATE_TCO_SHIFT 25
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#define MT_PSTATE_TCO_MASK ~(0x1 << MT_PSTATE_TCO_SHIFT)
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#define MT_PSTATE_TCO_EN 1
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#define MT_PSTATE_TCO_DIS 0
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#define MT_EXCLUDE_TAG(x) (1 << (x))
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#define MT_INCLUDE_VALID_TAG(x) (MT_INCLUDE_TAG_MASK ^ MT_EXCLUDE_TAG(x))
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#define MT_INCLUDE_VALID_TAGS(x) (MT_INCLUDE_TAG_MASK ^ (x))
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#define MTE_ALLOW_NON_ZERO_TAG MT_INCLUDE_VALID_TAG(0)
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