| | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| | 2 | // Copyright 2024 Google LLC |
| | 3 | // Author: Ard Biesheuvel <ardb@google.com> |
| | 4 | |
| | 5 | #include <linux/types.h> |
| | 6 | #include <asm/tlbflush.h> |
| | 7 | |
| | 8 | #ifdef CONFIG_CPU_TLB_V4WT |
| | 9 | void v4_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 10 | void v4_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 11 | |
| | 12 | struct cpu_tlb_fns v4_tlb_fns __initconst = { |
| | 13 | .flush_user_range = v4_flush_user_tlb_range, |
| | 14 | .flush_kern_range = v4_flush_kern_tlb_range, |
| | 15 | .tlb_flags = v4_tlb_flags, |
| | 16 | }; |
| | 17 | #endif |
| | 18 | |
| | 19 | #ifdef CONFIG_CPU_TLB_V4WB |
| | 20 | void v4wb_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 21 | void v4wb_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 22 | |
| | 23 | struct cpu_tlb_fns v4wb_tlb_fns __initconst = { |
| | 24 | .flush_user_range = v4wb_flush_user_tlb_range, |
| | 25 | .flush_kern_range = v4wb_flush_kern_tlb_range, |
| | 26 | .tlb_flags = v4wb_tlb_flags, |
| | 27 | }; |
| | 28 | #endif |
| | 29 | |
| | 30 | #if defined(CONFIG_CPU_TLB_V4WBI) || defined(CONFIG_CPU_TLB_FEROCEON) |
| | 31 | void v4wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 32 | void v4wbi_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 33 | |
| | 34 | struct cpu_tlb_fns v4wbi_tlb_fns __initconst = { |
| | 35 | .flush_user_range = v4wbi_flush_user_tlb_range, |
| | 36 | .flush_kern_range = v4wbi_flush_kern_tlb_range, |
| | 37 | .tlb_flags = v4wbi_tlb_flags, |
| | 38 | }; |
| | 39 | #endif |
| | 40 | |
| | 41 | #ifdef CONFIG_CPU_TLB_V6 |
| | 42 | void v6wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 43 | void v6wbi_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 44 | |
| | 45 | struct cpu_tlb_fns v6wbi_tlb_fns __initconst = { |
| | 46 | .flush_user_range = v6wbi_flush_user_tlb_range, |
| | 47 | .flush_kern_range = v6wbi_flush_kern_tlb_range, |
| | 48 | .tlb_flags = v6wbi_tlb_flags, |
| | 49 | }; |
| | 50 | #endif |
| | 51 | |
| | 52 | #ifdef CONFIG_CPU_TLB_V7 |
| | 53 | void v7wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 54 | void v7wbi_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 55 | |
| | 56 | struct cpu_tlb_fns v7wbi_tlb_fns __initconst = { |
| | 57 | .flush_user_range = v7wbi_flush_user_tlb_range, |
| | 58 | .flush_kern_range = v7wbi_flush_kern_tlb_range, |
| | 59 | .tlb_flags = IS_ENABLED(CONFIG_SMP) ? v7wbi_tlb_flags_smp |
| | 60 | : v7wbi_tlb_flags_up, |
| | 61 | }; |
| | 62 | |
| | 63 | #ifdef CONFIG_SMP_ON_UP |
| | 64 | /* This will be run-time patched so the offset better be right */ |
| | 65 | static_assert(offsetof(struct cpu_tlb_fns, tlb_flags) == 8); |
| | 66 | |
| | 67 | asm(" .pushsection \".alt.smp.init\", \"a\" \n" \ |
| | 68 | " .align 2 \n" \ |
| | 69 | " .long v7wbi_tlb_fns + 8 - . \n" \ |
| | 70 | " .long " __stringify(v7wbi_tlb_flags_up) " \n" \ |
| | 71 | " .popsection \n"); |
| | 72 | #endif |
| | 73 | #endif |
| | 74 | |
| | 75 | #ifdef CONFIG_CPU_TLB_FA |
| | 76 | void fa_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); |
| | 77 | void fa_flush_kern_tlb_range(unsigned long, unsigned long); |
| | 78 | |
| | 79 | struct cpu_tlb_fns fa_tlb_fns __initconst = { |
| | 80 | .flush_user_range = fa_flush_user_tlb_range, |
| | 81 | .flush_kern_range = fa_flush_kern_tlb_range, |
| | 82 | .tlb_flags = fa_tlb_flags, |
| | 83 | }; |
| | 84 | #endif |
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