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Diffstat (limited to 'include/asm-ppc/page.h')
| -rw-r--r-- | include/asm-ppc/page.h | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/include/asm-ppc/page.h b/include/asm-ppc/page.h deleted file mode 100644 index fc44f7ca62d..00000000000 --- a/include/asm-ppc/page.h +++ /dev/null @@ -1,173 +0,0 @@ -#ifndef _PPC_PAGE_H -#define _PPC_PAGE_H - -/* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT 12 -#define PAGE_SIZE (1UL << PAGE_SHIFT) - -/* - * Subtle: this is an int (not an unsigned long) and so it - * gets extended to 64 bits the way want (i.e. with 1s). -- paulus - */ -#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1)) - -#ifdef __KERNEL__ -#include <linux/config.h> - -/* This must match what is in arch/ppc/Makefile */ -#define PAGE_OFFSET CONFIG_KERNEL_START -#define KERNELBASE PAGE_OFFSET - -#ifndef __ASSEMBLY__ - -/* - * The basic type of a PTE - 64 bits for those CPUs with > 32 bit - * physical addressing. For now this just the IBM PPC440. - */ -#ifdef CONFIG_PTE_64BIT -typedef unsigned long long pte_basic_t; -#define PTE_SHIFT (PAGE_SHIFT - 3) /* 512 ptes per page */ -#define PTE_FMT "%16Lx" -#else -typedef unsigned long pte_basic_t; -#define PTE_SHIFT (PAGE_SHIFT - 2) /* 1024 ptes per page */ -#define PTE_FMT "%.8lx" -#endif - -/* align addr on a size boundary - adjust address up/down if needed */ -#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1))) -#define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1))) - -/* align addr on a size boundary - adjust address up if needed */ -#define _ALIGN(addr,size) _ALIGN_UP(addr,size) - -/* to align the pointer to the (next) page boundary */ -#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) - - -#undef STRICT_MM_TYPECHECKS - -#ifdef STRICT_MM_TYPECHECKS -/* - * These are used to make use of C type-checking.. - */ -typedef struct { pte_basic_t pte; } pte_t; -typedef struct { unsigned long pmd; } pmd_t; -typedef struct { unsigned long pgd; } pgd_t; -typedef struct { unsigned long pgprot; } pgprot_t; - -#define pte_val(x) ((x).pte) -#define pmd_val(x) ((x).pmd) -#define pgd_val(x) ((x).pgd) -#define pgprot_val(x) ((x).pgprot) - -#define __pte(x) ((pte_t) { (x) } ) -#define __pmd(x) ((pmd_t) { (x) } ) -#define __pgd(x) ((pgd_t) { (x) } ) -#define __pgprot(x) ((pgprot_t) { (x) } ) - -#else -/* - * .. while these make it easier on the compiler - */ -typedef pte_basic_t pte_t; -typedef unsigned long pmd_t; -typedef unsigned long pgd_t; -typedef unsigned long pgprot_t; - -#define pte_val(x) (x) -#define pmd_val(x) (x) -#define pgd_val(x) (x) -#define pgprot_val(x) (x) - -#define __pte(x) (x) -#define __pmd(x) (x) -#define __pgd(x) (x) -#define __pgprot(x) (x) - -#endif - -struct page; -extern void clear_pages(void *page, int order); -static inline void clear_page(void *page) { clear_pages(page, 0); } -extern void copy_page(void *to, void *from); -extern void clear_user_page(void *page, unsigned long vaddr, struct page *pg); -extern void copy_user_page(void *to, void *from, unsigned long vaddr, - struct page *pg); - -#ifndef CONFIG_APUS -#define PPC_MEMSTART 0 -#define PPC_PGSTART 0 -#define PPC_MEMOFFSET PAGE_OFFSET -#else -extern unsigned long ppc_memstart; -extern unsigned long ppc_pgstart; -extern unsigned long ppc_memoffset; -#define PPC_MEMSTART ppc_memstart -#define PPC_PGSTART ppc_pgstart -#define PPC_MEMOFFSET ppc_memoffset -#endif - -#if defined(CONFIG_APUS) && !defined(MODULE) -/* map phys->virtual and virtual->phys for RAM pages */ -static inline unsigned long ___pa(unsigned long v) -{ - unsigned long p; - asm volatile ("1: addis %0, %1, %2;" - ".section \".vtop_fixup\",\"aw\";" - ".align 1;" - ".long 1b;" - ".previous;" - : "=r" (p) - : "b" (v), "K" (((-PAGE_OFFSET) >> 16) & 0xffff)); - - return p; -} -static inline void* ___va(unsigned long p) -{ - unsigned long v; - asm volatile ("1: addis %0, %1, %2;" - ".section \".ptov_fixup\",\"aw\";" - ".align 1;" - ".long 1b;" - ".previous;" - : "=r" (v) - : "b" (p), "K" (((PAGE_OFFSET) >> 16) & 0xffff)); - - return (void*) v; -} -#else -#define ___pa(vaddr) ((vaddr)-PPC_MEMOFFSET) -#define ___va(paddr) ((paddr)+PPC_MEMOFFSET) -#endif - -extern int page_is_ram(unsigned long pfn); - -#define __pa(x) ___pa((unsigned long)(x)) -#define __va(x) ((void *)(___va((unsigned long)(x)))) - -#define pfn_to_page(pfn) (mem_map + ((pfn) - PPC_PGSTART)) -#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + PPC_PGSTART) -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) - -#define pfn_valid(pfn) (((pfn) - PPC_PGSTART) < max_mapnr) -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) - -/* Pure 2^n version of get_order */ -extern __inline__ int get_order(unsigned long size) -{ - int lz; - - size = (size-1) >> PAGE_SHIFT; - asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size)); - return 32 - lz; -} - -#endif /* __ASSEMBLY__ */ - -#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - -#endif /* __KERNEL__ */ -#endif /* _PPC_PAGE_H */ |