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iommu/io-pgtable-arm: Move some definitions to a header 

Extract some of the most generic TCR defines, so they can be reused by
the page table sharing code.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20200918101852.582559-6-jean-philippe@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jean-Philippe Brucker 2020-09-18 12:18:45 +02:00 committed by Will Deacon
parent 8122dec0ea
commit 7cef39ddba
3 changed files with 33 additions and 27 deletions
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3
MAINTAINERS
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@ -1506,8 +1506,7 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/iommu/arm,smmu*
F: drivers/iommu/arm/
F: drivers/iommu/io-pgtable-arm-v7s.c
F: drivers/iommu/io-pgtable-arm.c
F: drivers/iommu/io-pgtable-arm*
ARM SUB-ARCHITECTURES
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

27
drivers/iommu/io-pgtable-arm.c
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@ -20,6 +20,8 @@
#include <asm/barrier.h>
#include "io-pgtable-arm.h"
#define ARM_LPAE_MAX_ADDR_BITS 52
#define ARM_LPAE_S2_MAX_CONCAT_PAGES 16
#define ARM_LPAE_MAX_LEVELS 4
@ -100,23 +102,6 @@
#define ARM_LPAE_PTE_MEMATTR_DEV (((arm_lpae_iopte)0x1) << 2)
/* Register bits */
#define ARM_LPAE_TCR_TG0_4K 0
#define ARM_LPAE_TCR_TG0_64K 1
#define ARM_LPAE_TCR_TG0_16K 2
#define ARM_LPAE_TCR_TG1_16K 1
#define ARM_LPAE_TCR_TG1_4K 2
#define ARM_LPAE_TCR_TG1_64K 3
#define ARM_LPAE_TCR_SH_NS 0
#define ARM_LPAE_TCR_SH_OS 2
#define ARM_LPAE_TCR_SH_IS 3
#define ARM_LPAE_TCR_RGN_NC 0
#define ARM_LPAE_TCR_RGN_WBWA 1
#define ARM_LPAE_TCR_RGN_WT 2
#define ARM_LPAE_TCR_RGN_WB 3
#define ARM_LPAE_VTCR_SL0_MASK 0x3
#define ARM_LPAE_TCR_T0SZ_SHIFT 0
@ -124,14 +109,6 @@
#define ARM_LPAE_VTCR_PS_SHIFT 16
#define ARM_LPAE_VTCR_PS_MASK 0x7
#define ARM_LPAE_TCR_PS_32_BIT 0x0ULL
#define ARM_LPAE_TCR_PS_36_BIT 0x1ULL
#define ARM_LPAE_TCR_PS_40_BIT 0x2ULL
#define ARM_LPAE_TCR_PS_42_BIT 0x3ULL
#define ARM_LPAE_TCR_PS_44_BIT 0x4ULL
#define ARM_LPAE_TCR_PS_48_BIT 0x5ULL
#define ARM_LPAE_TCR_PS_52_BIT 0x6ULL
#define ARM_LPAE_MAIR_ATTR_SHIFT(n) ((n) << 3)
#define ARM_LPAE_MAIR_ATTR_MASK 0xff
#define ARM_LPAE_MAIR_ATTR_DEVICE 0x04

30
drivers/iommu/io-pgtable-arm.h Normal file
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@ -0,0 +1,30 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef IO_PGTABLE_ARM_H_
#define IO_PGTABLE_ARM_H_
#define ARM_LPAE_TCR_TG0_4K 0
#define ARM_LPAE_TCR_TG0_64K 1
#define ARM_LPAE_TCR_TG0_16K 2
#define ARM_LPAE_TCR_TG1_16K 1
#define ARM_LPAE_TCR_TG1_4K 2
#define ARM_LPAE_TCR_TG1_64K 3
#define ARM_LPAE_TCR_SH_NS 0
#define ARM_LPAE_TCR_SH_OS 2
#define ARM_LPAE_TCR_SH_IS 3
#define ARM_LPAE_TCR_RGN_NC 0
#define ARM_LPAE_TCR_RGN_WBWA 1
#define ARM_LPAE_TCR_RGN_WT 2
#define ARM_LPAE_TCR_RGN_WB 3
#define ARM_LPAE_TCR_PS_32_BIT 0x0ULL
#define ARM_LPAE_TCR_PS_36_BIT 0x1ULL
#define ARM_LPAE_TCR_PS_40_BIT 0x2ULL
#define ARM_LPAE_TCR_PS_42_BIT 0x3ULL
#define ARM_LPAE_TCR_PS_44_BIT 0x4ULL
#define ARM_LPAE_TCR_PS_48_BIT 0x5ULL
#define ARM_LPAE_TCR_PS_52_BIT 0x6ULL
#endif /* IO_PGTABLE_ARM_H_ */