diff options
Diffstat (limited to 'arch/m68k/include/asm/pgtable_mm.h')
| -rw-r--r-- | arch/m68k/include/asm/pgtable_mm.h | 73 |
1 files changed, 34 insertions, 39 deletions
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h index 35ed4a9981ae..bba64a9c49ac 100644 --- a/arch/m68k/include/asm/pgtable_mm.h +++ b/arch/m68k/include/asm/pgtable_mm.h @@ -1,11 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _M68K_PGTABLE_H #define _M68K_PGTABLE_H -#include <asm-generic/4level-fixup.h> + +#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) +#include <asm-generic/pgtable-nopmd.h> +#else +#include <asm-generic/pgtable-nopud.h> +#endif #include <asm/setup.h> -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <asm/processor.h> #include <linux/sched.h> #include <linux/threads.h> @@ -25,14 +31,10 @@ do{ \ *(pteptr) = (pteval); \ } while(0) -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) - /* PMD_SHIFT determines the size of the area a second-level page table can map */ -#ifdef CONFIG_SUN3 -#define PMD_SHIFT 17 -#else -#define PMD_SHIFT 22 +#if CONFIG_PGTABLE_LEVELS == 3 +#define PMD_SHIFT 18 #endif #define PMD_SIZE (1UL << PMD_SHIFT) #define PMD_MASK (~(PMD_SIZE-1)) @@ -54,29 +56,31 @@ */ #ifdef CONFIG_SUN3 #define PTRS_PER_PTE 16 -#define __PAGETABLE_PMD_FOLDED +#define __PAGETABLE_PMD_FOLDED 1 #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 2048 #elif defined(CONFIG_COLDFIRE) #define PTRS_PER_PTE 512 -#define __PAGETABLE_PMD_FOLDED +#define __PAGETABLE_PMD_FOLDED 1 #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 1024 #else -#define PTRS_PER_PTE 1024 -#define PTRS_PER_PMD 8 +#define PTRS_PER_PTE 64 +#define PTRS_PER_PMD 128 #define PTRS_PER_PGD 128 #endif #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) -#define FIRST_USER_ADDRESS 0UL /* Virtual address region for use by kernel_map() */ #ifdef CONFIG_SUN3 -#define KMAP_START 0x0DC00000 -#define KMAP_END 0x0E000000 +#define KMAP_START 0x0dc00000 +#define KMAP_END 0x0e000000 #elif defined(CONFIG_COLDFIRE) #define KMAP_START 0xe0000000 #define KMAP_END 0xf0000000 +#elif defined(CONFIG_VIRT) +#define KMAP_START 0xdf000000 +#define KMAP_END 0xff000000 #else #define KMAP_START 0xd0000000 #define KMAP_END 0xf0000000 @@ -89,6 +93,10 @@ extern unsigned long m68k_vmalloc_end; #elif defined(CONFIG_COLDFIRE) #define VMALLOC_START 0xd0000000 #define VMALLOC_END 0xe0000000 +#elif defined(CONFIG_VIRT) +#define VMALLOC_OFFSET PAGE_SIZE +#define VMALLOC_START (((unsigned long) high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1)) +#define VMALLOC_END KMAP_START #else /* Just any arbitrary offset to the start of the vmalloc VM area: the * current 8MB value just means that there will be a 8MB "hole" after the @@ -111,16 +119,6 @@ extern void *empty_zero_page; */ #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) -/* number of bits that fit into a memory pointer */ -#define BITS_PER_PTR (8*sizeof(unsigned long)) - -/* to align the pointer to a pointer address */ -#define PTR_MASK (~(sizeof(void*)-1)) - -/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */ -/* 64-bit machines, beware! SRB. */ -#define SIZEOF_PTR_LOG2 2 - extern void kernel_set_cachemode(void *addr, unsigned long size, int cmode); /* @@ -128,14 +126,16 @@ extern void kernel_set_cachemode(void *addr, unsigned long size, int cmode); * tables contain all the necessary information. The Sun3 does, but * they are updated on demand. */ -static inline void update_mmu_cache(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +static inline void update_mmu_cache_range(struct vm_fault *vmf, + struct vm_area_struct *vma, unsigned long address, + pte_t *ptep, unsigned int nr) { } -#endif /* !__ASSEMBLY__ */ +#define update_mmu_cache(vma, addr, ptep) \ + update_mmu_cache_range(NULL, vma, addr, ptep, 1) -#define kern_addr_valid(addr) (1) +#endif /* !__ASSEMBLER__ */ /* MMU-specific headers */ @@ -147,7 +147,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, #include <asm/motorola_pgtable.h> #endif -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ /* * Macro to mark a page protection value as "uncacheable". */ @@ -168,15 +168,10 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, ? (__pgprot((pgprot_val(prot) & _CACHEMASK040) | _PAGE_NOCACHE_S)) \ : (prot))) -#endif /* CONFIG_COLDFIRE */ -#include <asm-generic/pgtable.h> -#endif /* !__ASSEMBLY__ */ +pgprot_t pgprot_dmacoherent(pgprot_t prot); +#define pgprot_dmacoherent(prot) pgprot_dmacoherent(prot) -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) - -#define check_pgt_cache() do { } while (0) +#endif /* CONFIG_COLDFIRE */ +#endif /* !__ASSEMBLER__ */ #endif /* _M68K_PGTABLE_H */ |