/* $Id: page.h,v 1.1.1.1 2004-04-15 02:40:32 phoenix Exp $
|
/* $Id: page.h,v 1.1.1.1 2004-04-15 02:40:32 phoenix Exp $
|
* page.h: Various defines and such for MMU operations on the Sparc for
|
* page.h: Various defines and such for MMU operations on the Sparc for
|
* the Linux kernel.
|
* the Linux kernel.
|
*
|
*
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
*/
|
*/
|
|
|
#ifndef _SPARC_PAGE_H
|
#ifndef _SPARC_PAGE_H
|
#define _SPARC_PAGE_H
|
#define _SPARC_PAGE_H
|
|
|
#include <linux/config.h>
|
#include <linux/config.h>
|
#ifdef CONFIG_SUN4
|
#ifdef CONFIG_SUN4
|
#define PAGE_SHIFT 13
|
#define PAGE_SHIFT 13
|
#else
|
#else
|
#define PAGE_SHIFT 12
|
#define PAGE_SHIFT 12
|
#endif
|
#endif
|
#ifndef __ASSEMBLY__
|
#ifndef __ASSEMBLY__
|
/* I have my suspicions... -DaveM */
|
/* I have my suspicions... -DaveM */
|
#define PAGE_SIZE (1UL << PAGE_SHIFT)
|
#define PAGE_SIZE (1UL << PAGE_SHIFT)
|
#else
|
#else
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
#endif
|
#endif
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
|
#ifdef __KERNEL__
|
#ifdef __KERNEL__
|
|
|
#include <asm/head.h> /* for KERNBASE */
|
#include <asm/head.h> /* for KERNBASE */
|
#include <asm/btfixup.h>
|
#include <asm/btfixup.h>
|
|
|
/* This is always 2048*sizeof(long), doesn't change with PAGE_SIZE */
|
/* This is always 2048*sizeof(long), doesn't change with PAGE_SIZE */
|
#define TASK_UNION_SIZE 8192
|
#define TASK_UNION_SIZE 8192
|
|
|
#ifndef __ASSEMBLY__
|
#ifndef __ASSEMBLY__
|
|
|
/*
|
/*
|
* XXX I am hitting compiler bugs with __builtin_trap. This has
|
* XXX I am hitting compiler bugs with __builtin_trap. This has
|
* hit me before and rusty was blaming his netfilter bugs on
|
* hit me before and rusty was blaming his netfilter bugs on
|
* this so lets disable it. - Anton
|
* this so lets disable it. - Anton
|
*/
|
*/
|
#if 0
|
#if 0
|
/* We need the mb()'s so we don't trigger a compiler bug - Anton */
|
/* We need the mb()'s so we don't trigger a compiler bug - Anton */
|
#define BUG() do { \
|
#define BUG() do { \
|
mb(); \
|
mb(); \
|
__builtin_trap(); \
|
__builtin_trap(); \
|
mb(); \
|
mb(); \
|
} while(0)
|
} while(0)
|
#else
|
#else
|
#define BUG() do { \
|
#define BUG() do { \
|
printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); *(int *)0=0; \
|
printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); *(int *)0=0; \
|
} while (0)
|
} while (0)
|
#endif
|
#endif
|
|
|
#define PAGE_BUG(page) BUG()
|
#define PAGE_BUG(page) BUG()
|
|
|
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
|
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
|
#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
|
#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
|
#define clear_user_page(page, vaddr) clear_page(page)
|
#define clear_user_page(page, vaddr) clear_page(page)
|
#define copy_user_page(to, from, vaddr) copy_page(to, from)
|
#define copy_user_page(to, from, vaddr) copy_page(to, from)
|
|
|
/* The following structure is used to hold the physical
|
/* The following structure is used to hold the physical
|
* memory configuration of the machine. This is filled in
|
* memory configuration of the machine. This is filled in
|
* probe_memory() and is later used by mem_init() to set up
|
* probe_memory() and is later used by mem_init() to set up
|
* mem_map[]. We statically allocate SPARC_PHYS_BANKS of
|
* mem_map[]. We statically allocate SPARC_PHYS_BANKS of
|
* these structs, this is arbitrary. The entry after the
|
* these structs, this is arbitrary. The entry after the
|
* last valid one has num_bytes==0.
|
* last valid one has num_bytes==0.
|
*/
|
*/
|
|
|
struct sparc_phys_banks {
|
struct sparc_phys_banks {
|
unsigned long base_addr;
|
unsigned long base_addr;
|
unsigned long num_bytes;
|
unsigned long num_bytes;
|
};
|
};
|
|
|
#define SPARC_PHYS_BANKS 32
|
#define SPARC_PHYS_BANKS 32
|
|
|
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
|
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
|
|
|
/* Cache alias structure. Entry is valid if context != -1. */
|
/* Cache alias structure. Entry is valid if context != -1. */
|
struct cache_palias {
|
struct cache_palias {
|
unsigned long vaddr;
|
unsigned long vaddr;
|
int context;
|
int context;
|
};
|
};
|
|
|
extern struct cache_palias *sparc_aliases;
|
extern struct cache_palias *sparc_aliases;
|
|
|
/* passing structs on the Sparc slow us down tremendously... */
|
/* passing structs on the Sparc slow us down tremendously... */
|
|
|
/* #define STRICT_MM_TYPECHECKS */
|
/* #define STRICT_MM_TYPECHECKS */
|
|
|
#ifdef STRICT_MM_TYPECHECKS
|
#ifdef STRICT_MM_TYPECHECKS
|
/*
|
/*
|
* These are used to make use of C type-checking..
|
* These are used to make use of C type-checking..
|
*/
|
*/
|
typedef struct { unsigned long pte; } pte_t;
|
typedef struct { unsigned long pte; } pte_t;
|
typedef struct { unsigned long iopte; } iopte_t;
|
typedef struct { unsigned long iopte; } iopte_t;
|
typedef struct { unsigned long pmd; } pmd_t;
|
typedef struct { unsigned long pmd; } pmd_t;
|
typedef struct { unsigned long pgd; } pgd_t;
|
typedef struct { unsigned long pgd; } pgd_t;
|
typedef struct { unsigned long ctxd; } ctxd_t;
|
typedef struct { unsigned long ctxd; } ctxd_t;
|
typedef struct { unsigned long pgprot; } pgprot_t;
|
typedef struct { unsigned long pgprot; } pgprot_t;
|
typedef struct { unsigned long iopgprot; } iopgprot_t;
|
typedef struct { unsigned long iopgprot; } iopgprot_t;
|
|
|
#define pte_val(x) ((x).pte)
|
#define pte_val(x) ((x).pte)
|
#define iopte_val(x) ((x).iopte)
|
#define iopte_val(x) ((x).iopte)
|
#define pmd_val(x) ((x).pmd)
|
#define pmd_val(x) ((x).pmd)
|
#define pgd_val(x) ((x).pgd)
|
#define pgd_val(x) ((x).pgd)
|
#define ctxd_val(x) ((x).ctxd)
|
#define ctxd_val(x) ((x).ctxd)
|
#define pgprot_val(x) ((x).pgprot)
|
#define pgprot_val(x) ((x).pgprot)
|
#define iopgprot_val(x) ((x).iopgprot)
|
#define iopgprot_val(x) ((x).iopgprot)
|
|
|
#define __pte(x) ((pte_t) { (x) } )
|
#define __pte(x) ((pte_t) { (x) } )
|
#define __iopte(x) ((iopte_t) { (x) } )
|
#define __iopte(x) ((iopte_t) { (x) } )
|
#define __pmd(x) ((pmd_t) { (x) } )
|
#define __pmd(x) ((pmd_t) { (x) } )
|
#define __pgd(x) ((pgd_t) { (x) } )
|
#define __pgd(x) ((pgd_t) { (x) } )
|
#define __ctxd(x) ((ctxd_t) { (x) } )
|
#define __ctxd(x) ((ctxd_t) { (x) } )
|
#define __pgprot(x) ((pgprot_t) { (x) } )
|
#define __pgprot(x) ((pgprot_t) { (x) } )
|
#define __iopgprot(x) ((iopgprot_t) { (x) } )
|
#define __iopgprot(x) ((iopgprot_t) { (x) } )
|
|
|
#else
|
#else
|
/*
|
/*
|
* .. while these make it easier on the compiler
|
* .. while these make it easier on the compiler
|
*/
|
*/
|
typedef unsigned long pte_t;
|
typedef unsigned long pte_t;
|
typedef unsigned long iopte_t;
|
typedef unsigned long iopte_t;
|
typedef unsigned long pmd_t;
|
typedef unsigned long pmd_t;
|
typedef unsigned long pgd_t;
|
typedef unsigned long pgd_t;
|
typedef unsigned long ctxd_t;
|
typedef unsigned long ctxd_t;
|
typedef unsigned long pgprot_t;
|
typedef unsigned long pgprot_t;
|
typedef unsigned long iopgprot_t;
|
typedef unsigned long iopgprot_t;
|
|
|
#define pte_val(x) (x)
|
#define pte_val(x) (x)
|
#define iopte_val(x) (x)
|
#define iopte_val(x) (x)
|
#define pmd_val(x) (x)
|
#define pmd_val(x) (x)
|
#define pgd_val(x) (x)
|
#define pgd_val(x) (x)
|
#define ctxd_val(x) (x)
|
#define ctxd_val(x) (x)
|
#define pgprot_val(x) (x)
|
#define pgprot_val(x) (x)
|
#define iopgprot_val(x) (x)
|
#define iopgprot_val(x) (x)
|
|
|
#define __pte(x) (x)
|
#define __pte(x) (x)
|
#define __iopte(x) (x)
|
#define __iopte(x) (x)
|
#define __pmd(x) (x)
|
#define __pmd(x) (x)
|
#define __pgd(x) (x)
|
#define __pgd(x) (x)
|
#define __ctxd(x) (x)
|
#define __ctxd(x) (x)
|
#define __pgprot(x) (x)
|
#define __pgprot(x) (x)
|
#define __iopgprot(x) (x)
|
#define __iopgprot(x) (x)
|
|
|
#endif
|
#endif
|
|
|
extern unsigned long sparc_unmapped_base;
|
extern unsigned long sparc_unmapped_base;
|
|
|
BTFIXUPDEF_SETHI(sparc_unmapped_base)
|
BTFIXUPDEF_SETHI(sparc_unmapped_base)
|
|
|
#define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base)
|
#define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base)
|
|
|
/* Pure 2^n version of get_order */
|
/* Pure 2^n version of get_order */
|
extern __inline__ int get_order(unsigned long size)
|
extern __inline__ int get_order(unsigned long size)
|
{
|
{
|
int order;
|
int order;
|
|
|
size = (size-1) >> (PAGE_SHIFT-1);
|
size = (size-1) >> (PAGE_SHIFT-1);
|
order = -1;
|
order = -1;
|
do {
|
do {
|
size >>= 1;
|
size >>= 1;
|
order++;
|
order++;
|
} while (size);
|
} while (size);
|
return order;
|
return order;
|
}
|
}
|
|
|
#else /* !(__ASSEMBLY__) */
|
#else /* !(__ASSEMBLY__) */
|
|
|
#define __pgprot(x) (x)
|
#define __pgprot(x) (x)
|
|
|
#endif /* !(__ASSEMBLY__) */
|
#endif /* !(__ASSEMBLY__) */
|
|
|
/* to align the pointer to the (next) page boundary */
|
/* to align the pointer to the (next) page boundary */
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
#define PAGE_OFFSET 0xf0000000
|
#define PAGE_OFFSET 0xf0000000
|
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
|
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
|
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
|
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
|
#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT))
|
#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT))
|
#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
|
#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
|
|
|
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
|
|
#endif /* __KERNEL__ */
|
#endif /* __KERNEL__ */
|
|
|
#endif /* _SPARC_PAGE_H */
|
#endif /* _SPARC_PAGE_H */
|
|
|
