.. | .. |
---|
| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
---|
1 | 2 | /* |
---|
2 | 3 | * Copyright (C) 2012 ARM Ltd. |
---|
3 | | - * |
---|
4 | | - * This program is free software; you can redistribute it and/or modify |
---|
5 | | - * it under the terms of the GNU General Public License version 2 as |
---|
6 | | - * published by the Free Software Foundation. |
---|
7 | | - * |
---|
8 | | - * This program is distributed in the hope that it will be useful, |
---|
9 | | - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
10 | | - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
11 | | - * GNU General Public License for more details. |
---|
12 | | - * |
---|
13 | | - * You should have received a copy of the GNU General Public License |
---|
14 | | - * along with this program. If not, see <http://www.gnu.org/licenses/>. |
---|
15 | 4 | */ |
---|
16 | 5 | #ifndef __ASM_CACHE_H |
---|
17 | 6 | #define __ASM_CACHE_H |
---|
18 | 7 | |
---|
19 | 8 | #include <asm/cputype.h> |
---|
| 9 | +#include <asm/mte-def.h> |
---|
20 | 10 | |
---|
21 | 11 | #define CTR_L1IP_SHIFT 14 |
---|
22 | 12 | #define CTR_L1IP_MASK 3 |
---|
.. | .. |
---|
35 | 25 | #define CTR_L1IP(ctr) (((ctr) >> CTR_L1IP_SHIFT) & CTR_L1IP_MASK) |
---|
36 | 26 | |
---|
37 | 27 | #define ICACHE_POLICY_VPIPT 0 |
---|
| 28 | +#define ICACHE_POLICY_RESERVED 1 |
---|
38 | 29 | #define ICACHE_POLICY_VIPT 2 |
---|
39 | 30 | #define ICACHE_POLICY_PIPT 3 |
---|
40 | 31 | |
---|
41 | 32 | #define L1_CACHE_SHIFT (6) |
---|
42 | 33 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) |
---|
| 34 | + |
---|
| 35 | + |
---|
| 36 | +#define CLIDR_LOUU_SHIFT 27 |
---|
| 37 | +#define CLIDR_LOC_SHIFT 24 |
---|
| 38 | +#define CLIDR_LOUIS_SHIFT 21 |
---|
| 39 | + |
---|
| 40 | +#define CLIDR_LOUU(clidr) (((clidr) >> CLIDR_LOUU_SHIFT) & 0x7) |
---|
| 41 | +#define CLIDR_LOC(clidr) (((clidr) >> CLIDR_LOC_SHIFT) & 0x7) |
---|
| 42 | +#define CLIDR_LOUIS(clidr) (((clidr) >> CLIDR_LOUIS_SHIFT) & 0x7) |
---|
43 | 43 | |
---|
44 | 44 | /* |
---|
45 | 45 | * Memory returned by kmalloc() may be used for DMA, so we must make |
---|
.. | .. |
---|
50 | 50 | */ |
---|
51 | 51 | #define ARCH_DMA_MINALIGN (128) |
---|
52 | 52 | |
---|
53 | | -#ifdef CONFIG_KASAN_SW_TAGS |
---|
54 | | -#define ARCH_SLAB_MINALIGN (1ULL << KASAN_SHADOW_SCALE_SHIFT) |
---|
55 | | -#endif |
---|
56 | | - |
---|
57 | 53 | #ifndef __ASSEMBLY__ |
---|
58 | 54 | |
---|
59 | 55 | #include <linux/bitops.h> |
---|
| 56 | +#include <linux/kasan-enabled.h> |
---|
| 57 | + |
---|
| 58 | +#ifdef CONFIG_KASAN_SW_TAGS |
---|
| 59 | +#define ARCH_SLAB_MINALIGN (1ULL << KASAN_SHADOW_SCALE_SHIFT) |
---|
| 60 | +#elif defined(CONFIG_KASAN_HW_TAGS) |
---|
| 61 | +static inline unsigned int arch_slab_minalign(void) |
---|
| 62 | +{ |
---|
| 63 | + return kasan_hw_tags_enabled() ? MTE_GRANULE_SIZE : |
---|
| 64 | + __alignof__(unsigned long long); |
---|
| 65 | +} |
---|
| 66 | +#define arch_slab_minalign() arch_slab_minalign() |
---|
| 67 | +#endif |
---|
60 | 68 | |
---|
61 | 69 | #define ICACHEF_ALIASING 0 |
---|
62 | 70 | #define ICACHEF_VPIPT 1 |
---|
.. | .. |
---|
71 | 79 | return test_bit(ICACHEF_ALIASING, &__icache_flags); |
---|
72 | 80 | } |
---|
73 | 81 | |
---|
74 | | -static inline int icache_is_vpipt(void) |
---|
| 82 | +static __always_inline int icache_is_vpipt(void) |
---|
75 | 83 | { |
---|
76 | 84 | return test_bit(ICACHEF_VPIPT, &__icache_flags); |
---|
77 | 85 | } |
---|
.. | .. |
---|
81 | 89 | return (read_cpuid_cachetype() >> CTR_CWG_SHIFT) & CTR_CWG_MASK; |
---|
82 | 90 | } |
---|
83 | 91 | |
---|
84 | | -#define __read_mostly __attribute__((__section__(".data..read_mostly"))) |
---|
| 92 | +#define __read_mostly __section(".data..read_mostly") |
---|
85 | 93 | |
---|
86 | | -static inline int cache_line_size(void) |
---|
| 94 | +static inline int cache_line_size_of_cpu(void) |
---|
87 | 95 | { |
---|
88 | 96 | u32 cwg = cache_type_cwg(); |
---|
| 97 | + |
---|
89 | 98 | return cwg ? 4 << cwg : ARCH_DMA_MINALIGN; |
---|
90 | 99 | } |
---|
91 | 100 | |
---|
| 101 | +int cache_line_size(void); |
---|
| 102 | + |
---|
| 103 | +/* |
---|
| 104 | + * Read the effective value of CTR_EL0. |
---|
| 105 | + * |
---|
| 106 | + * According to ARM ARM for ARMv8-A (ARM DDI 0487C.a), |
---|
| 107 | + * section D10.2.33 "CTR_EL0, Cache Type Register" : |
---|
| 108 | + * |
---|
| 109 | + * CTR_EL0.IDC reports the data cache clean requirements for |
---|
| 110 | + * instruction to data coherence. |
---|
| 111 | + * |
---|
| 112 | + * 0 - dcache clean to PoU is required unless : |
---|
| 113 | + * (CLIDR_EL1.LoC == 0) || (CLIDR_EL1.LoUIS == 0 && CLIDR_EL1.LoUU == 0) |
---|
| 114 | + * 1 - dcache clean to PoU is not required for i-to-d coherence. |
---|
| 115 | + * |
---|
| 116 | + * This routine provides the CTR_EL0 with the IDC field updated to the |
---|
| 117 | + * effective state. |
---|
| 118 | + */ |
---|
| 119 | +static inline u32 __attribute_const__ read_cpuid_effective_cachetype(void) |
---|
| 120 | +{ |
---|
| 121 | + u32 ctr = read_cpuid_cachetype(); |
---|
| 122 | + |
---|
| 123 | + if (!(ctr & BIT(CTR_IDC_SHIFT))) { |
---|
| 124 | + u64 clidr = read_sysreg(clidr_el1); |
---|
| 125 | + |
---|
| 126 | + if (CLIDR_LOC(clidr) == 0 || |
---|
| 127 | + (CLIDR_LOUIS(clidr) == 0 && CLIDR_LOUU(clidr) == 0)) |
---|
| 128 | + ctr |= BIT(CTR_IDC_SHIFT); |
---|
| 129 | + } |
---|
| 130 | + |
---|
| 131 | + return ctr; |
---|
| 132 | +} |
---|
| 133 | + |
---|
92 | 134 | #endif /* __ASSEMBLY__ */ |
---|
93 | 135 | |
---|
94 | 136 | #endif |
---|