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/
usr/
src/
linux-headers-3.0.0-14/
arch/
sparc/
include/
asm/
- drwxr-xr-x
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Viewing file: page_32.h (4.24 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* * page.h: Various defines and such for MMU operations on the Sparc for * the Linux kernel. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */
#ifndef _SPARC_PAGE_H #define _SPARC_PAGE_H
#define PAGE_SHIFT 12
#ifndef __ASSEMBLY__ /* I have my suspicions... -DaveM */ #define PAGE_SIZE (1UL << PAGE_SHIFT) #else #define PAGE_SIZE (1 << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1))
#include <asm/btfixup.h>
#ifndef __ASSEMBLY__
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) #define clear_user_page(addr, vaddr, page) \ do { clear_page(addr); \ sparc_flush_page_to_ram(page); \ } while (0) #define copy_user_page(to, from, vaddr, page) \ do { copy_page(to, from); \ sparc_flush_page_to_ram(page); \ } while (0)
/* The following structure is used to hold the physical * memory configuration of the machine. This is filled in * prom_meminit() and is later used by mem_init() to set up * mem_map[]. We statically allocate SPARC_PHYS_BANKS+1 of * these structs, this is arbitrary. The entry after the * last valid one has num_bytes==0. */ struct sparc_phys_banks { unsigned long base_addr; unsigned long num_bytes; };
#define SPARC_PHYS_BANKS 32
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
/* Cache alias structure. Entry is valid if context != -1. */ struct cache_palias { unsigned long vaddr; int context; };
/* passing structs on the Sparc slow us down tremendously... */
/* #define STRICT_MM_TYPECHECKS */
#ifdef STRICT_MM_TYPECHECKS /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long iopte; } iopte_t; typedef struct { unsigned long pmdv[16]; } pmd_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long ctxd; } ctxd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct { unsigned long iopgprot; } iopgprot_t;
#define pte_val(x) ((x).pte) #define iopte_val(x) ((x).iopte) #define pmd_val(x) ((x).pmdv[0]) #define pgd_val(x) ((x).pgd) #define ctxd_val(x) ((x).ctxd) #define pgprot_val(x) ((x).pgprot) #define iopgprot_val(x) ((x).iopgprot)
#define __pte(x) ((pte_t) { (x) } ) #define __iopte(x) ((iopte_t) { (x) } ) /* #define __pmd(x) ((pmd_t) { (x) } ) */ /* XXX procedure with loop */ #define __pgd(x) ((pgd_t) { (x) } ) #define __ctxd(x) ((ctxd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) #define __iopgprot(x) ((iopgprot_t) { (x) } )
#else /* * .. while these make it easier on the compiler */ typedef unsigned long pte_t; typedef unsigned long iopte_t; typedef struct { unsigned long pmdv[16]; } pmd_t; typedef unsigned long pgd_t; typedef unsigned long ctxd_t; typedef unsigned long pgprot_t; typedef unsigned long iopgprot_t;
#define pte_val(x) (x) #define iopte_val(x) (x) #define pmd_val(x) ((x).pmdv[0]) #define pgd_val(x) (x) #define ctxd_val(x) (x) #define pgprot_val(x) (x) #define iopgprot_val(x) (x)
#define __pte(x) (x) #define __iopte(x) (x) /* #define __pmd(x) (x) */ /* XXX later */ #define __pgd(x) (x) #define __ctxd(x) (x) #define __pgprot(x) (x) #define __iopgprot(x) (x)
#endif
typedef struct page *pgtable_t;
extern unsigned long sparc_unmapped_base;
BTFIXUPDEF_SETHI(sparc_unmapped_base)
#define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base)
#else /* !(__ASSEMBLY__) */
#define __pgprot(x) (x)
#endif /* !(__ASSEMBLY__) */
#define PAGE_OFFSET 0xf0000000 #ifndef __ASSEMBLY__ extern unsigned long phys_base; extern unsigned long pfn_base; #endif #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + phys_base) #define __va(x) ((void *)((unsigned long) (x) - phys_base + PAGE_OFFSET))
#define virt_to_phys __pa #define phys_to_virt __va
#define ARCH_PFN_OFFSET (pfn_base) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr)) #define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/getorder.h>
#endif /* _SPARC_PAGE_H */
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