/* $Id: pgtable.h,v 1.86 1999/12/16 14:41:19 anton Exp $ */
#ifndef _SPARC_PGTABLE_H
#define _SPARC_PGTABLE_H
/* asm-sparc/pgtable.h: Defines and functions used to work
* with Sparc page tables.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/mm.h>
#include <linux/config.h>
#include <linux/spinlock.h>
#include <asm/asi.h>
#ifdef CONFIG_SUN4
#include <asm/pgtsun4.h>
#else
#include <asm/pgtsun4c.h>
#endif
#include <asm/pgtsrmmu.h>
#include <asm/vac-ops.h>
#include <asm/oplib.h>
#include <asm/sbus.h>
#include <asm/btfixup.h>
extern void load_mmu(void);
extern int io_remap_page_range(unsigned long from, unsigned long to,
unsigned long size, pgprot_t prot, int space);
BTFIXUPDEF_CALL(void, quick_kernel_fault, unsigned long)
#define quick_kernel_fault(addr) BTFIXUP_CALL(quick_kernel_fault)(addr)
/* Routines for data transfer buffers. */
BTFIXUPDEF_CALL(char *, mmu_lockarea, char *, unsigned long)
BTFIXUPDEF_CALL(void, mmu_unlockarea, char *, unsigned long)
#define mmu_lockarea(vaddr,len) BTFIXUP_CALL(mmu_lockarea)(vaddr,len)
#define mmu_unlockarea(vaddr,len) BTFIXUP_CALL(mmu_unlockarea)(vaddr,len)
/* These are implementations for sbus_map_sg/sbus_unmap_sg... collapse later */
BTFIXUPDEF_CALL(__u32, mmu_get_scsi_one, char *, unsigned long, struct sbus_bus *sbus)
BTFIXUPDEF_CALL(void, mmu_get_scsi_sgl, struct scatterlist *, int, struct sbus_bus *sbus)
BTFIXUPDEF_CALL(void, mmu_release_scsi_one, __u32, unsigned long, struct sbus_bus *sbus)
BTFIXUPDEF_CALL(void, mmu_release_scsi_sgl, struct scatterlist *, int, struct sbus_bus *sbus)
#define mmu_get_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_get_scsi_one)(vaddr,len,sbus)
#define mmu_get_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_get_scsi_sgl)(sg,sz,sbus)
#define mmu_release_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_release_scsi_one)(vaddr,len,sbus)
#define mmu_release_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_release_scsi_sgl)(sg,sz,sbus)
/* mmu_map/unmap is provided by iommu/iounit; mmu_flush/inval probably belongs to CPU... */
BTFIXUPDEF_CALL(void, mmu_map_dma_area, unsigned long va, __u32 addr, int len)
BTFIXUPDEF_CALL(void, mmu_unmap_dma_area, unsigned long addr, int len)
BTFIXUPDEF_CALL(void, mmu_inval_dma_area, unsigned long addr, int len)
BTFIXUPDEF_CALL(void, mmu_flush_dma_area, unsigned long addr, int len)
#define mmu_map_dma_area(va, ba,len) BTFIXUP_CALL(mmu_map_dma_area)(va,ba,len)
#define mmu_unmap_dma_area(ba,len) BTFIXUP_CALL(mmu_unmap_dma_area)(ba,len)
#define mmu_inval_dma_area(va,len) BTFIXUP_CALL(mmu_unmap_dma_area)(va,len)
#define mmu_flush_dma_area(va,len) BTFIXUP_CALL(mmu_unmap_dma_area)(va,len)
BTFIXUPDEF_SIMM13(pmd_shift)
BTFIXUPDEF_SETHI(pmd_size)
BTFIXUPDEF_SETHI(pmd_mask)
extern unsigned int pmd_align(unsigned int addr) __attribute__((const));
extern __inline__ unsigned int pmd_align(unsigned int addr)
{
return ((addr + ~BTFIXUP_SETHI(pmd_mask)) & BTFIXUP_SETHI(pmd_mask));
}
BTFIXUPDEF_SIMM13(pgdir_shift)
BTFIXUPDEF_SETHI(pgdir_size)
BTFIXUPDEF_SETHI(pgdir_mask)
extern unsigned int pgdir_align(unsigned int addr) __attribute__((const));
extern __inline__ unsigned int pgdir_align(unsigned int addr)
{
return ((addr + ~BTFIXUP_SETHI(pgdir_mask)) & BTFIXUP_SETHI(pgdir_mask));
}
BTFIXUPDEF_SIMM13(ptrs_per_pte)
BTFIXUPDEF_SIMM13(ptrs_per_pmd)
BTFIXUPDEF_SIMM13(ptrs_per_pgd)
BTFIXUPDEF_SIMM13(user_ptrs_per_pgd)
#define VMALLOC_VMADDR(x) ((unsigned long)(x))
/* This is the same accross all platforms */
#define VMALLOC_START (0xfe300000)
#define VMALLOC_END ~0x0UL
#define pte_ERROR(e) __builtin_trap()
#define pmd_ERROR(e) __builtin_trap()
#define pgd_ERROR(e) __builtin_trap()
BTFIXUPDEF_INT(page_none)
BTFIXUPDEF_INT(page_shared)
BTFIXUPDEF_INT(page_copy)
BTFIXUPDEF_INT(page_readonly)
BTFIXUPDEF_INT(page_kernel)
#define PMD_SHIFT BTFIXUP_SIMM13(pmd_shift)
#define PMD_SIZE BTFIXUP_SETHI(pmd_size)
#define PMD_MASK BTFIXUP_SETHI(pmd_mask)
#define PMD_ALIGN(addr) pmd_align(addr)
#define PGDIR_SHIFT BTFIXUP_SIMM13(pgdir_shift)
#define PGDIR_SIZE BTFIXUP_SETHI(pgdir_size)
#define PGDIR_MASK BTFIXUP_SETHI(pgdir_mask)
#define PGDIR_ALIGN pgdir_align(addr)
#define PTRS_PER_PTE BTFIXUP_SIMM13(ptrs_per_pte)
#define PTRS_PER_PMD BTFIXUP_SIMM13(ptrs_per_pmd)
#define PTRS_PER_PGD BTFIXUP_SIMM13(ptrs_per_pgd)
#define USER_PTRS_PER_PGD BTFIXUP_SIMM13(user_ptrs_per_pgd)
#define PAGE_NONE __pgprot(BTFIXUP_INT(page_none))
#define PAGE_SHARED __pgprot(BTFIXUP_INT(page_shared))
#define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy))
#define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly))
#define PAGE_KERNEL __pgprot(BTFIXUP_INT(page_kernel))
BTFIXUPDEF_CALL(void, set_pgdir, unsigned long, pgd_t)
#define set_pgdir(address,entry) BTFIXUP_CALL(set_pgdir)(address,entry)
/* Top-level page directory */
extern pgd_t swapper_pg_dir[1024];
/* Page table for 0-4MB for everybody, on the Sparc this
* holds the same as on the i386.
*/
extern pte_t pg0[1024];
extern pte_t pg1[1024];
extern pte_t pg2[1024];
extern pte_t pg3[1024];
extern unsigned long ptr_in_current_pgd;
/* the no. of pointers that fit on a page: this will go away */
#define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*))
/* Here is a trick, since mmap.c need the initializer elements for
* protection_map[] to be constant at compile time, I set the following
* to all zeros. I set it to the real values after I link in the
* appropriate MMU page table routines at boot time.
*/
#define __P000 __pgprot(0)
#define __P001 __pgprot(0)
#define __P010 __pgprot(0)
#define __P011 __pgprot(0)
#define __P100 __pgprot(0)
#define __P101 __pgprot(0)
#define __P110 __pgprot(0)
#define __P111 __pgprot(0)
#define __S000 __pgprot(0)
#define __S001 __pgprot(0)
#define __S010 __pgprot(0)
#define __S011 __pgprot(0)
#define __S100 __pgprot(0)
#define __S101 __pgprot(0)
#define __S110 __pgprot(0)
#define __S111 __pgprot(0)
extern int num_contexts;
/* First physical page can be anywhere, the following is needed so that
* va-->pa and vice versa conversions work properly without performance
* hit for all __pa()/__va() operations.
*/
extern unsigned long phys_base;
/*
* BAD_PAGETABLE is used when we need a bogus page-table, while
* BAD_PAGE is used for a bogus page.
*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
*/
extern pte_t * __bad_pagetable(void);
extern pte_t __bad_page(void);
extern unsigned long empty_zero_page;
#define BAD_PAGETABLE __bad_pagetable()
#define BAD_PAGE __bad_page()
#define ZERO_PAGE(vaddr) (mem_map + (((unsigned long)&empty_zero_page - PAGE_OFFSET + phys_base) >> PAGE_SHIFT))
/* 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))
#define SIZEOF_PTR_LOG2 2
BTFIXUPDEF_CALL_CONST(unsigned long, pte_pagenr, pte_t)
BTFIXUPDEF_CALL_CONST(unsigned long, pmd_page, pmd_t)
BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page, pgd_t)
#define pte_pagenr(pte) BTFIXUP_CALL(pte_pagenr)(pte)
#define pmd_page(pmd) BTFIXUP_CALL(pmd_page)(pmd)
#define pgd_page(pgd) BTFIXUP_CALL(pgd_page)(pgd)
BTFIXUPDEF_SETHI(none_mask)
BTFIXUPDEF_CALL_CONST(int, pte_present, pte_t)
BTFIXUPDEF_CALL(void, pte_clear, pte_t *)
extern __inline__ int pte_none(pte_t pte)
{
return !(pte_val(pte) & ~BTFIXUP_SETHI(none_mask));
}
#define pte_present(pte) BTFIXUP_CALL(pte_present)(pte)
#define pte_clear(pte) BTFIXUP_CALL(pte_clear)(pte)
BTFIXUPDEF_CALL_CONST(int, pmd_bad, pmd_t)
BTFIXUPDEF_CALL_CONST(int, pmd_present, pmd_t)
BTFIXUPDEF_CALL(void, pmd_clear, pmd_t *)
extern __inline__ int pmd_none(pmd_t pmd)
{
return !(pmd_val(pmd) & ~BTFIXUP_SETHI(none_mask));
}
#define pmd_bad(pmd) BTFIXUP_CALL(pmd_bad)(pmd)
#define pmd_present(pmd) BTFIXUP_CALL(pmd_present)(pmd)
#define pmd_clear(pmd) BTFIXUP_CALL(pmd_clear)(pmd)
BTFIXUPDEF_CALL_CONST(int, pgd_none, pgd_t)
BTFIXUPDEF_CALL_CONST(int, pgd_bad, pgd_t)
BTFIXUPDEF_CALL_CONST(int, pgd_present, pgd_t)
BTFIXUPDEF_CALL(void, pgd_clear, pgd_t *)
#define pgd_none(pgd) BTFIXUP_CALL(pgd_none)(pgd)
#define pgd_bad(pgd) BTFIXUP_CALL(pgd_bad)(pgd)
#define pgd_present(pgd) BTFIXUP_CALL(pgd_present)(pgd)
#define pgd_clear(pgd) BTFIXUP_CALL(pgd_clear)(pgd)
/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
BTFIXUPDEF_HALF(pte_writei)
BTFIXUPDEF_HALF(pte_dirtyi)
BTFIXUPDEF_HALF(pte_youngi)
extern int pte_write(pte_t pte) __attribute__((const));
extern __inline__ int pte_write(pte_t pte)
{
return pte_val(pte) & BTFIXUP_HALF(pte_writei);
}
extern int pte_dirty(pte_t pte) __attribute__((const));
extern __inline__ int pte_dirty(pte_t pte)
{
return pte_val(pte) & BTFIXUP_HALF(pte_dirtyi);
}
extern int pte_young(pte_t pte) __attribute__((const));
extern __inline__ int pte_young(pte_t pte)
{
return pte_val(pte) & BTFIXUP_HALF(pte_youngi);
}
BTFIXUPDEF_HALF(pte_wrprotecti)
BTFIXUPDEF_HALF(pte_mkcleani)
BTFIXUPDEF_HALF(pte_mkoldi)
extern pte_t pte_wrprotect(pte_t pte) __attribute__((const));
extern __inline__ pte_t pte_wrprotect(pte_t pte)
{
return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_wrprotecti));
}
extern pte_t pte_mkclean(pte_t pte) __attribute__((const));
extern __inline__ pte_t pte_mkclean(pte_t pte)
{
return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkcleani));
}
extern pte_t pte_mkold(pte_t pte) __attribute__((const));
extern __inline__ pte_t pte_mkold(pte_t pte)
{
return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkoldi));
}
BTFIXUPDEF_CALL_CONST(pte_t, pte_mkwrite, pte_t)
BTFIXUPDEF_CALL_CONST(pte_t, pte_mkdirty, pte_t)
BTFIXUPDEF_CALL_CONST(pte_t, pte_mkyoung, pte_t)
#define pte_mkwrite(pte) BTFIXUP_CALL(pte_mkwrite)(pte)
#define pte_mkdirty(pte) BTFIXUP_CALL(pte_mkdirty)(pte)
#define pte_mkyoung(pte) BTFIXUP_CALL(pte_mkyoung)(pte)
#define page_pte_prot(page, prot) mk_pte(page, prot)
#define page_pte(page) page_pte_prot(page, __pgprot(0))
/* Permanent address of a page. */
#define page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
#define pte_page(x) (mem_map+pte_pagenr(x))
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
*/
BTFIXUPDEF_CALL_CONST(pte_t, mk_pte, struct page *, pgprot_t)
BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_phys, unsigned long, pgprot_t)
BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_io, unsigned long, pgprot_t, int)
#define mk_pte(page,pgprot) BTFIXUP_CALL(mk_pte)(page,pgprot)
#define mk_pte_phys(page,pgprot) BTFIXUP_CALL(mk_pte_phys)(page,pgprot)
#define mk_pte_io(page,pgprot,space) BTFIXUP_CALL(mk_pte_io)(page,pgprot,space)
BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *)
#define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp)
BTFIXUPDEF_INT(pte_modify_mask)
extern pte_t pte_modify(pte_t pte, pgprot_t newprot) __attribute__((const));
extern __inline__ pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
return __pte((pte_val(pte) & BTFIXUP_INT(pte_modify_mask)) |
pgprot_val(newprot));
}
BTFIXUPDEF_CALL(pgd_t *, pgd_offset, struct mm_struct *, unsigned long)
BTFIXUPDEF_CALL(pmd_t *, pmd_offset, pgd_t *, unsigned long)
BTFIXUPDEF_CALL(pte_t *, pte_offset, pmd_t *, unsigned long)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* to find an entry in a page-table-directory */
#define pgd_offset(mm,addr) BTFIXUP_CALL(pgd_offset)(mm,addr)
/* Find an entry in the second-level page table.. */
#define pmd_offset(dir,addr) BTFIXUP_CALL(pmd_offset)(dir,addr)
/* Find an entry in the third-level page table.. */
#define pte_offset(dir,addr) BTFIXUP_CALL(pte_offset)(dir,addr)
extern struct pgtable_cache_struct {
unsigned long *pgd_cache;
unsigned long *pte_cache;
unsigned long pgtable_cache_sz;
unsigned long pgd_cache_sz;
spinlock_t pgd_spinlock;
spinlock_t pte_spinlock;
} pgt_quicklists;
#define pgd_quicklist (pgt_quicklists.pgd_cache)
#define pmd_quicklist ((unsigned long *)0)
#define pte_quicklist (pgt_quicklists.pte_cache)
#define pgd_spinlock (pgt_quicklists.pgd_spinlock)
#define pte_spinlock (pgt_quicklists.pte_spinlock)
#define pgtable_cache_size (pgt_quicklists.pgtable_cache_sz)
#define pgd_cache_size (pgt_quicklists.pgd_cache_sz)
BTFIXUPDEF_CALL(pte_t *, get_pte_fast, void)
BTFIXUPDEF_CALL(pgd_t *, get_pgd_fast, void)
BTFIXUPDEF_CALL(void, free_pte_slow, pte_t *)
BTFIXUPDEF_CALL(void, free_pgd_slow, pgd_t *)
BTFIXUPDEF_CALL(int, do_check_pgt_cache, int, int)
#define get_pte_fast() BTFIXUP_CALL(get_pte_fast)()
extern __inline__ pmd_t *get_pmd_fast(void)
{
return (pmd_t *)0;
}
#define get_pgd_fast() BTFIXUP_CALL(get_pgd_fast)()
#define free_pte_slow(pte) BTFIXUP_CALL(free_pte_slow)(pte)
extern __inline__ void free_pmd_slow(pmd_t *pmd)
{
}
#define free_pgd_slow(pgd) BTFIXUP_CALL(free_pgd_slow)(pgd)
#define do_check_pgt_cache(low,high) BTFIXUP_CALL(do_check_pgt_cache)(low,high)
/*
* Allocate and free page tables. The xxx_kernel() versions are
* used to allocate a kernel page table - this turns on ASN bits
* if any, and marks the page tables reserved.
*/
BTFIXUPDEF_CALL(void, pte_free_kernel, pte_t *)
BTFIXUPDEF_CALL(pte_t *, pte_alloc_kernel, pmd_t *, unsigned long)
#define pte_free_kernel(pte) BTFIXUP_CALL(pte_free_kernel)(pte)
#define pte_alloc_kernel(pmd,addr) BTFIXUP_CALL(pte_alloc_kernel)(pmd,addr)
BTFIXUPDEF_CALL(void, pmd_free_kernel, pmd_t *)
BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_kernel, pgd_t *, unsigned long)
#define pmd_free_kernel(pmd) BTFIXUP_CALL(pmd_free_kernel)(pmd)
#define pmd_alloc_kernel(pgd,addr) BTFIXUP_CALL(pmd_alloc_kernel)(pgd,addr)
BTFIXUPDEF_CALL(void, pte_free, pte_t *)
BTFIXUPDEF_CALL(pte_t *, pte_alloc, pmd_t *, unsigned long)
#define pte_free(pte) BTFIXUP_CALL(pte_free)(pte)
#define pte_alloc(pmd,addr) BTFIXUP_CALL(pte_alloc)(pmd,addr)
BTFIXUPDEF_CALL(void, pmd_free, pmd_t *)
BTFIXUPDEF_CALL(pmd_t *, pmd_alloc, pgd_t *, unsigned long)
#define pmd_free(pmd) BTFIXUP_CALL(pmd_free)(pmd)
#define pmd_alloc(pgd,addr) BTFIXUP_CALL(pmd_alloc)(pgd,addr)
BTFIXUPDEF_CALL(void, pgd_free, pgd_t *)
BTFIXUPDEF_CALL(pgd_t *, pgd_alloc, void)
#define pgd_free(pgd) BTFIXUP_CALL(pgd_free)(pgd)
#define pgd_alloc() BTFIXUP_CALL(pgd_alloc)()
/* Fine grained cache/tlb flushing. */
#ifdef __SMP__
BTFIXUPDEF_CALL(void, local_flush_cache_all, void)
BTFIXUPDEF_CALL(void, local_flush_cache_mm, struct mm_struct *)
BTFIXUPDEF_CALL(void, local_flush_cache_range, struct mm_struct *, unsigned long, unsigned long)
BTFIXUPDEF_CALL(void, local_flush_cache_page, struct vm_area_struct *, unsigned long)
#define local_flush_cache_all() BTFIXUP_CALL(local_flush_cache_all)()
#define local_flush_cache_mm(mm) BTFIXUP_CALL(local_flush_cache_mm)(mm)
#define local_flush_cache_range(mm,start,end) BTFIXUP_CALL(local_flush_cache_range)(mm,start,end)
#define local_flush_cache_page(vma,addr) BTFIXUP_CALL(local_flush_cache_page)(vma,addr)
BTFIXUPDEF_CALL(void, local_flush_tlb_all, void)
BTFIXUPDEF_CALL(void, local_flush_tlb_mm, struct mm_struct *)
BTFIXUPDEF_CALL(void, local_flush_tlb_range, struct mm_struct *, unsigned long, unsigned long)
BTFIXUPDEF_CALL(void, local_flush_tlb_page, struct vm_area_struct *, unsigned long)
#define local_flush_tlb_all() BTFIXUP_CALL(local_flush_tlb_all)()
#define local_flush_tlb_mm(mm) BTFIXUP_CALL(local_flush_tlb_mm)(mm)
#define local_flush_tlb_range(mm,start,end) BTFIXUP_CALL(local_flush_tlb_range)(mm,start,end)
#define local_flush_tlb_page(vma,addr) BTFIXUP_CALL(local_flush_tlb_page)(vma,addr)
BTFIXUPDEF_CALL(void, local_flush_page_to_ram, struct page *)
BTFIXUPDEF_CALL(void, local_flush_sig_insns, struct mm_struct *, unsigned long)
#define local_flush_page_to_ram(page) BTFIXUP_CALL(local_flush_page_to_ram)(page)
#define local_flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(local_flush_sig_insns)(mm,insn_addr)
extern void smp_flush_cache_all(void);
extern void smp_flush_cache_mm(struct mm_struct *mm);
extern void smp_flush_cache_range(struct mm_struct *mm,
unsigned long start,
unsigned long end);
extern void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page);
extern void smp_flush_tlb_all(void);
extern void smp_flush_tlb_mm(struct mm_struct *mm);
extern void smp_flush_tlb_range(struct mm_struct *mm,
unsigned long start,
unsigned long end);
extern void smp_flush_tlb_page(struct vm_area_struct *mm, unsigned long page);
extern void smp_flush_page_to_ram(struct page *page);
extern void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr);
#endif
BTFIXUPDEF_CALL(void, flush_cache_all, void)
BTFIXUPDEF_CALL(void, flush_cache_mm, struct mm_struct *)
BTFIXUPDEF_CALL(void, flush_cache_range, struct mm_struct *, unsigned long, unsigned long)
BTFIXUPDEF_CALL(void, flush_cache_page, struct vm_area_struct *, unsigned long)
#define flush_cache_all() BTFIXUP_CALL(flush_cache_all)()
#define flush_cache_mm(mm) BTFIXUP_CALL(flush_cache_mm)(mm)
#define flush_cache_range(mm,start,end) BTFIXUP_CALL(flush_cache_range)(mm,start,end)
#define flush_cache_page(vma,addr) BTFIXUP_CALL(flush_cache_page)(vma,addr)
#define flush_icache_range(start, end) do { } while (0)
BTFIXUPDEF_CALL(void, flush_tlb_all, void)
BTFIXUPDEF_CALL(void, flush_tlb_mm, struct mm_struct *)
BTFIXUPDEF_CALL(void, flush_tlb_range, struct mm_struct *, unsigned long, unsigned long)
BTFIXUPDEF_CALL(void, flush_tlb_page, struct vm_area_struct *, unsigned long)
#define flush_tlb_all() BTFIXUP_CALL(flush_tlb_all)()
#define flush_tlb_mm(mm) BTFIXUP_CALL(flush_tlb_mm)(mm)
#define flush_tlb_range(mm,start,end) BTFIXUP_CALL(flush_tlb_range)(mm,start,end)
#define flush_tlb_page(vma,addr) BTFIXUP_CALL(flush_tlb_page)(vma,addr)
BTFIXUPDEF_CALL(void, flush_page_to_ram, struct page *)
BTFIXUPDEF_CALL(void, flush_sig_insns, struct mm_struct *, unsigned long)
#define flush_page_to_ram(page) BTFIXUP_CALL(flush_page_to_ram)(page)
#define flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(flush_sig_insns)(mm,insn_addr)
/* The permissions for pgprot_val to make a page mapped on the obio space */
extern unsigned int pg_iobits;
/* Certain architectures need to do special things when pte's
* within a page table are directly modified. Thus, the following
* hook is made available.
*/
BTFIXUPDEF_CALL(void, set_pte, pte_t *, pte_t)
#define set_pte(ptep,pteval) BTFIXUP_CALL(set_pte)(ptep,pteval)
BTFIXUPDEF_CALL(int, mmu_info, char *)
#define mmu_info(p) BTFIXUP_CALL(mmu_info)(p)
/* Fault handler stuff... */
#define FAULT_CODE_PROT 0x1
#define FAULT_CODE_WRITE 0x2
#define FAULT_CODE_USER 0x4
BTFIXUPDEF_CALL(void, update_mmu_cache, struct vm_area_struct *, unsigned long, pte_t)
#define update_mmu_cache(vma,addr,pte) BTFIXUP_CALL(update_mmu_cache)(vma,addr,pte)
extern int invalid_segment;
#define SWP_TYPE(entry) (((entry) >> 2) & 0x7f)
#define SWP_OFFSET(entry) (((entry) >> 9) & 0x3ffff)
#define SWP_ENTRY(type,offset) ((((type) & 0x7f) << 2) | (((offset) & 0x3ffff) << 9))
struct ctx_list {
struct ctx_list *next;
struct ctx_list *prev;
unsigned int ctx_number;
struct mm_struct *ctx_mm;
};
extern struct ctx_list *ctx_list_pool; /* Dynamically allocated */
extern struct ctx_list ctx_free; /* Head of free list */
extern struct ctx_list ctx_used; /* Head of used contexts list */
#define NO_CONTEXT -1
extern __inline__ void remove_from_ctx_list(struct ctx_list *entry)
{
entry->next->prev = entry->prev;
entry->prev->next = entry->next;
}
extern __inline__ void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry)
{
entry->next = head;
(entry->prev = head->prev)->next = entry;
head->prev = entry;
}
#define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
#define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)
extern __inline__ unsigned long
__get_phys (unsigned long addr)
{
switch (sparc_cpu_model){
case sun4:
case sun4c:
return sun4c_get_pte (addr) << PAGE_SHIFT;
case sun4m:
case sun4d:
return ((srmmu_get_pte (addr) & 0xffffff00) << 4);
default:
return 0;
}
}
extern __inline__ int
__get_iospace (unsigned long addr)
{
switch (sparc_cpu_model){
case sun4:
case sun4c:
return -1; /* Don't check iospace on sun4c */
case sun4m:
case sun4d:
return (srmmu_get_pte (addr) >> 28);
default:
return -1;
}
}
#define module_map vmalloc
#define module_unmap vfree
extern unsigned long *sparc_valid_addr_bitmap;
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr) (test_bit(__pa((unsigned long)(addr))>>20, sparc_valid_addr_bitmap))
#endif /* !(_SPARC_PGTABLE_H) */
