7cd9b317b6
Drop multiple definitions of ioremap_bot and make one common to all subarches. Only CONFIG_PPC_BOOK3E_64 had a global static init value for ioremap_bot. Now ioremap_bot is set in early_init_mmu_global(). Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/920eebfd9f36f14c79d1755847f5bf7c83703bdd.1566309262.git.christophe.leroy@c-s.fr
173 lines
4.8 KiB
C
173 lines
4.8 KiB
C
/* 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
|
|
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)
|
|
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) || 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 */
|
|
|
|
extern void _tlbie(unsigned long address);
|
|
extern void _tlbia(void);
|
|
|
|
void print_system_hash_info(void);
|
|
|
|
#endif /* CONFIG_PPC_MMU_NOHASH */
|
|
|
|
#ifdef CONFIG_PPC32
|
|
|
|
void hash_preload(struct mm_struct *mm, unsigned long ea);
|
|
|
|
extern void mapin_ram(void);
|
|
extern void setbat(int index, unsigned long virt, phys_addr_t phys,
|
|
unsigned int size, pgprot_t prot);
|
|
|
|
extern int __map_without_bats;
|
|
extern unsigned int rtas_data, rtas_size;
|
|
|
|
struct hash_pte;
|
|
extern struct hash_pte *Hash;
|
|
extern u8 early_hash[];
|
|
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
extern unsigned long __max_low_memory;
|
|
extern phys_addr_t __initial_memory_limit_addr;
|
|
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;
|
|
|
|
#ifdef CONFIG_WII
|
|
extern unsigned long wii_hole_start;
|
|
extern unsigned long wii_hole_size;
|
|
|
|
extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
|
|
extern void wii_memory_fixups(void);
|
|
#endif
|
|
|
|
/* ...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
|
|
|
|
#ifdef CONFIG_PPC_FSL_BOOK3E
|
|
extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
|
|
bool dryrun);
|
|
extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
|
|
phys_addr_t phys);
|
|
#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);
|
|
#endif
|
|
extern void loadcam_entry(unsigned int index);
|
|
extern void loadcam_multi(int first_idx, int num, int tmp_idx);
|
|
|
|
struct tlbcam {
|
|
u32 MAS0;
|
|
u32 MAS1;
|
|
unsigned long MAS2;
|
|
u32 MAS3;
|
|
u32 MAS7;
|
|
};
|
|
#endif
|
|
|
|
#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx)
|
|
/* 6xx have BATS */
|
|
/* FSL_BOOKE 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)
|
|
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
|