projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 6b0ef279 AB |
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 |