diff options
Diffstat (limited to 'arch/powerpc/mm/mmu_decl.h')
| -rw-r--r-- | arch/powerpc/mm/mmu_decl.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h new file mode 100644 index 0000000000..7f9ff06401 --- /dev/null +++ b/arch/powerpc/mm/mmu_decl.h @@ -0,0 +1,183 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Declarations of procedures and variables shared between files + * in arch/ppc/mm/. + * + * Derived from arch/ppc/mm/init.c: + * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) + * + * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) + * and Cort Dougan (PReP) (cort@cs.nmt.edu) + * Copyright (C) 1996 Paul Mackerras + * + * Derived from "arch/i386/mm/init.c" + * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds + */ +#include <linux/mm.h> +#include <asm/mmu.h> + +#ifdef CONFIG_PPC_MMU_NOHASH +#include <asm/trace.h> + +/* + * On 40x and 8xx, we directly inline tlbia and tlbivax + */ +#if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx) +static inline void _tlbil_all(void) +{ + asm volatile ("sync; tlbia; isync" : : : "memory"); + trace_tlbia(MMU_NO_CONTEXT); +} +static inline void _tlbil_pid(unsigned int pid) +{ + asm volatile ("sync; tlbia; isync" : : : "memory"); + trace_tlbia(pid); +} +#define _tlbil_pid_noind(pid) _tlbil_pid(pid) + +#else /* CONFIG_40x || CONFIG_PPC_8xx */ +extern void _tlbil_all(void); +extern void _tlbil_pid(unsigned int pid); +#ifdef CONFIG_PPC_BOOK3E_64 +extern void _tlbil_pid_noind(unsigned int pid); +#else +#define _tlbil_pid_noind(pid) _tlbil_pid(pid) +#endif +#endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */ + +/* + * On 8xx, we directly inline tlbie, on others, it's extern + */ +#ifdef CONFIG_PPC_8xx +static inline void _tlbil_va(unsigned long address, unsigned int pid, + unsigned int tsize, unsigned int ind) +{ + asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); + trace_tlbie(0, 0, address, pid, 0, 0, 0); +} +#elif defined(CONFIG_PPC_BOOK3E_64) +extern void _tlbil_va(unsigned long address, unsigned int pid, + unsigned int tsize, unsigned int ind); +#else +extern void __tlbil_va(unsigned long address, unsigned int pid); +static inline void _tlbil_va(unsigned long address, unsigned int pid, + unsigned int tsize, unsigned int ind) +{ + __tlbil_va(address, pid); +} +#endif /* CONFIG_PPC_8xx */ + +#if defined(CONFIG_PPC_BOOK3E_64) || defined(CONFIG_PPC_47x) +extern void _tlbivax_bcast(unsigned long address, unsigned int pid, + unsigned int tsize, unsigned int ind); +#else +static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, + unsigned int tsize, unsigned int ind) +{ + BUG(); +} +#endif + +static inline void print_system_hash_info(void) {} + +#else /* CONFIG_PPC_MMU_NOHASH */ + +void print_system_hash_info(void); + +#endif /* CONFIG_PPC_MMU_NOHASH */ + +#ifdef CONFIG_PPC32 + +extern void mapin_ram(void); +extern void setbat(int index, unsigned long virt, phys_addr_t phys, + unsigned int size, pgprot_t prot); + +extern u8 early_hash[]; + +#endif /* CONFIG_PPC32 */ + +extern unsigned long __max_low_memory; +extern phys_addr_t total_memory; +extern phys_addr_t total_lowmem; +extern phys_addr_t memstart_addr; +extern phys_addr_t lowmem_end_addr; + +/* ...and now those things that may be slightly different between processor + * architectures. -- Dan + */ +#ifdef CONFIG_PPC32 +extern void MMU_init_hw(void); +void MMU_init_hw_patch(void); +unsigned long mmu_mapin_ram(unsigned long base, unsigned long top); +#endif +void mmu_init_secondary(int cpu); + +#ifdef CONFIG_PPC_E500 +extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, + bool dryrun, bool init); +#ifdef CONFIG_PPC32 +extern void adjust_total_lowmem(void); +extern int switch_to_as1(void); +extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); +void create_kaslr_tlb_entry(int entry, unsigned long virt, phys_addr_t phys); +void reloc_kernel_entry(void *fdt, int addr); +void relocate_init(u64 dt_ptr, phys_addr_t start); +extern int is_second_reloc; +#endif +extern void loadcam_entry(unsigned int index); +extern void loadcam_multi(int first_idx, int num, int tmp_idx); + +#ifdef CONFIG_RANDOMIZE_BASE +void kaslr_early_init(void *dt_ptr, phys_addr_t size); +void kaslr_late_init(void); +#else +static inline void kaslr_early_init(void *dt_ptr, phys_addr_t size) {} +static inline void kaslr_late_init(void) {} +#endif + +struct tlbcam { + u32 MAS0; + u32 MAS1; + unsigned long MAS2; + u32 MAS3; + u32 MAS7; +}; + +#define NUM_TLBCAMS 64 + +extern struct tlbcam TLBCAM[NUM_TLBCAMS]; +#endif + +#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_8xx) +/* 6xx have BATS */ +/* PPC_85xx have TLBCAM */ +/* 8xx have LTLB */ +phys_addr_t v_block_mapped(unsigned long va); +unsigned long p_block_mapped(phys_addr_t pa); +#else +static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; } +static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; } +#endif + +#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx) || defined(CONFIG_PPC_E500) +void mmu_mark_initmem_nx(void); +void mmu_mark_rodata_ro(void); +#else +static inline void mmu_mark_initmem_nx(void) { } +static inline void mmu_mark_rodata_ro(void) { } +#endif + +#ifdef CONFIG_PPC_8xx +void __init mmu_mapin_immr(void); +#endif + +#ifdef CONFIG_DEBUG_WX +void ptdump_check_wx(void); +#else +static inline void ptdump_check_wx(void) { } +#endif + +static inline bool debug_pagealloc_enabled_or_kfence(void) +{ + return IS_ENABLED(CONFIG_KFENCE) || debug_pagealloc_enabled(); +} |