mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 00:42:16 +00:00
8c65b4a604
Fix more include file problems that surfaced since I submitted the previous fix-missing-includes.patch. This should now allow not to include sched.h from module.h, which is done by a followup patch. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
307 lines
11 KiB
C
307 lines
11 KiB
C
#ifndef __ASM_SH_PGTABLE_H
|
|
#define __ASM_SH_PGTABLE_H
|
|
|
|
#include <asm-generic/4level-fixup.h>
|
|
|
|
/*
|
|
* Copyright (C) 1999 Niibe Yutaka
|
|
* Copyright (C) 2002, 2003, 2004 Paul Mundt
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/pgtable-2level.h>
|
|
|
|
/*
|
|
* This file contains the functions and defines necessary to modify and use
|
|
* the SuperH page table tree.
|
|
*/
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/processor.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/fixmap.h>
|
|
#include <linux/threads.h>
|
|
|
|
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
|
|
extern void paging_init(void);
|
|
|
|
/*
|
|
* Basically we have the same two-level (which is the logical three level
|
|
* Linux page table layout folded) page tables as the i386.
|
|
*/
|
|
|
|
/*
|
|
* ZERO_PAGE is a global shared page that is always zero: used
|
|
* for zero-mapped memory areas etc..
|
|
*/
|
|
extern unsigned long empty_zero_page[1024];
|
|
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#define PMD_SIZE (1UL << PMD_SHIFT)
|
|
#define PMD_MASK (~(PMD_SIZE-1))
|
|
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
|
|
#define PGDIR_MASK (~(PGDIR_SIZE-1))
|
|
|
|
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
|
|
#define FIRST_USER_ADDRESS 0
|
|
|
|
#define PTE_PHYS_MASK 0x1ffff000
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* First 1MB map is used by fixed purpose.
|
|
* Currently only 4-enty (16kB) is used (see arch/sh/mm/cache.c)
|
|
*/
|
|
#define VMALLOC_START (P3SEG+0x00100000)
|
|
#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
|
|
|
|
#define _PAGE_WT 0x001 /* WT-bit on SH-4, 0 on SH-3 */
|
|
#define _PAGE_HW_SHARED 0x002 /* SH-bit : page is shared among processes */
|
|
#define _PAGE_DIRTY 0x004 /* D-bit : page changed */
|
|
#define _PAGE_CACHABLE 0x008 /* C-bit : cachable */
|
|
#define _PAGE_SZ0 0x010 /* SZ0-bit : Size of page */
|
|
#define _PAGE_RW 0x020 /* PR0-bit : write access allowed */
|
|
#define _PAGE_USER 0x040 /* PR1-bit : user space access allowed */
|
|
#define _PAGE_SZ1 0x080 /* SZ1-bit : Size of page (on SH-4) */
|
|
#define _PAGE_PRESENT 0x100 /* V-bit : page is valid */
|
|
#define _PAGE_PROTNONE 0x200 /* software: if not present */
|
|
#define _PAGE_ACCESSED 0x400 /* software: page referenced */
|
|
#define _PAGE_U0_SHARED 0x800 /* software: page is shared in user space */
|
|
|
|
#define _PAGE_FILE _PAGE_WT /* software: pagecache or swap? */
|
|
|
|
/* software: moves to PTEA.TC (Timing Control) */
|
|
#define _PAGE_PCC_AREA5 0x00000000 /* use BSC registers for area5 */
|
|
#define _PAGE_PCC_AREA6 0x80000000 /* use BSC registers for area6 */
|
|
|
|
/* software: moves to PTEA.SA[2:0] (Space Attributes) */
|
|
#define _PAGE_PCC_IODYN 0x00000001 /* IO space, dynamically sized bus */
|
|
#define _PAGE_PCC_IO8 0x20000000 /* IO space, 8 bit bus */
|
|
#define _PAGE_PCC_IO16 0x20000001 /* IO space, 16 bit bus */
|
|
#define _PAGE_PCC_COM8 0x40000000 /* Common Memory space, 8 bit bus */
|
|
#define _PAGE_PCC_COM16 0x40000001 /* Common Memory space, 16 bit bus */
|
|
#define _PAGE_PCC_ATR8 0x60000000 /* Attribute Memory space, 8 bit bus */
|
|
#define _PAGE_PCC_ATR16 0x60000001 /* Attribute Memory space, 6 bit bus */
|
|
|
|
|
|
/* Mask which drop software flags
|
|
* We also drop WT bit since it is used for _PAGE_FILE
|
|
* bit in this implementation.
|
|
*/
|
|
#define _PAGE_CLEAR_FLAGS (_PAGE_WT | _PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_U0_SHARED)
|
|
|
|
#if defined(CONFIG_CPU_SH3)
|
|
/*
|
|
* MMU on SH-3 has bug on SH-bit: We can't use it if MMUCR.IX=1.
|
|
* Work around: Just drop SH-bit.
|
|
*/
|
|
#define _PAGE_FLAGS_HARDWARE_MASK (0x1fffffff & ~(_PAGE_CLEAR_FLAGS | _PAGE_HW_SHARED))
|
|
#else
|
|
#define _PAGE_FLAGS_HARDWARE_MASK (0x1fffffff & ~(_PAGE_CLEAR_FLAGS))
|
|
#endif
|
|
|
|
/* Hardware flags: SZ0=1 (4k-byte) */
|
|
#define _PAGE_FLAGS_HARD _PAGE_SZ0
|
|
|
|
#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
|
|
#define _PAGE_SZHUGE (_PAGE_SZ1)
|
|
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
|
|
#define _PAGE_SZHUGE (_PAGE_SZ0 | _PAGE_SZ1)
|
|
#endif
|
|
|
|
#define _PAGE_SHARED _PAGE_U0_SHARED
|
|
|
|
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
|
|
#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
|
|
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | _PAGE_DIRTY | _PAGE_SHARED)
|
|
|
|
#ifdef CONFIG_MMU
|
|
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE |_PAGE_ACCESSED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_CACHABLE |_PAGE_ACCESSED | _PAGE_SHARED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_CACHABLE | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_KERNEL_NOCACHE \
|
|
__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
|
|
#define PAGE_KERNEL_PCC(slot, type) \
|
|
__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_FLAGS_HARD | (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | (type))
|
|
#else /* no mmu */
|
|
#define PAGE_NONE __pgprot(0)
|
|
#define PAGE_SHARED __pgprot(0)
|
|
#define PAGE_COPY __pgprot(0)
|
|
#define PAGE_READONLY __pgprot(0)
|
|
#define PAGE_KERNEL __pgprot(0)
|
|
#define PAGE_KERNEL_NOCACHE __pgprot(0)
|
|
#define PAGE_KERNEL_RO __pgprot(0)
|
|
#define PAGE_KERNEL_PCC __pgprot(0)
|
|
#endif
|
|
|
|
/*
|
|
* As i386 and MIPS, SuperH can't do page protection for execute, and
|
|
* considers that the same as a read. Also, write permissions imply
|
|
* read permissions. This is the closest we can get..
|
|
*/
|
|
|
|
#define __P000 PAGE_NONE
|
|
#define __P001 PAGE_READONLY
|
|
#define __P010 PAGE_COPY
|
|
#define __P011 PAGE_COPY
|
|
#define __P100 PAGE_READONLY
|
|
#define __P101 PAGE_READONLY
|
|
#define __P110 PAGE_COPY
|
|
#define __P111 PAGE_COPY
|
|
|
|
#define __S000 PAGE_NONE
|
|
#define __S001 PAGE_READONLY
|
|
#define __S010 PAGE_SHARED
|
|
#define __S011 PAGE_SHARED
|
|
#define __S100 PAGE_READONLY
|
|
#define __S101 PAGE_READONLY
|
|
#define __S110 PAGE_SHARED
|
|
#define __S111 PAGE_SHARED
|
|
|
|
#define pte_none(x) (!pte_val(x))
|
|
#define pte_present(x) (pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE))
|
|
#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
|
|
|
|
#define pmd_none(x) (!pmd_val(x))
|
|
#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
|
|
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
|
|
#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
|
|
|
|
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
|
|
#define pte_page(x) phys_to_page(pte_val(x)&PTE_PHYS_MASK)
|
|
|
|
/*
|
|
* The following only work if pte_present() is true.
|
|
* Undefined behaviour if not..
|
|
*/
|
|
static inline int pte_read(pte_t pte) { return pte_val(pte) & _PAGE_USER; }
|
|
static inline int pte_exec(pte_t pte) { return pte_val(pte) & _PAGE_USER; }
|
|
static inline int pte_dirty(pte_t pte){ return pte_val(pte) & _PAGE_DIRTY; }
|
|
static inline int pte_young(pte_t pte){ return pte_val(pte) & _PAGE_ACCESSED; }
|
|
static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
|
|
static inline int pte_write(pte_t pte){ return pte_val(pte) & _PAGE_RW; }
|
|
static inline int pte_not_present(pte_t pte){ return !(pte_val(pte) & _PAGE_PRESENT); }
|
|
|
|
static inline pte_t pte_rdprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; }
|
|
static inline pte_t pte_exprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; }
|
|
static inline pte_t pte_mkclean(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
|
|
static inline pte_t pte_mkold(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
|
|
static inline pte_t pte_wrprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_RW)); return pte; }
|
|
static inline pte_t pte_mkread(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_USER)); return pte; }
|
|
static inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_USER)); return pte; }
|
|
static inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
|
|
static inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
|
|
static inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; }
|
|
#ifdef CONFIG_HUGETLB_PAGE
|
|
static inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; }
|
|
#endif
|
|
|
|
/*
|
|
* Macro and implementation to make a page protection as uncachable.
|
|
*/
|
|
#define pgprot_noncached pgprot_noncached
|
|
|
|
static inline pgprot_t pgprot_noncached(pgprot_t _prot)
|
|
{
|
|
unsigned long prot = pgprot_val(_prot);
|
|
|
|
prot &= ~_PAGE_CACHABLE;
|
|
return __pgprot(prot);
|
|
}
|
|
|
|
#define pgprot_writecombine(prot) __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
|
|
|
|
/*
|
|
* Conversion functions: convert a page and protection to a page entry,
|
|
* and a page entry and page directory to the page they refer to.
|
|
*
|
|
* extern pte_t mk_pte(struct page *page, pgprot_t pgprot)
|
|
*/
|
|
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
|
|
|
|
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
|
|
{ set_pte(&pte, __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot))); return pte; }
|
|
|
|
#define pmd_page_kernel(pmd) \
|
|
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
|
|
|
|
#define pmd_page(pmd) \
|
|
(phys_to_page(pmd_val(pmd)))
|
|
|
|
/* to find an entry in a page-table-directory. */
|
|
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
|
|
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
|
|
|
|
/* to find an entry in a kernel page-table-directory */
|
|
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
|
|
|
|
/* Find an entry in the third-level page table.. */
|
|
#define pte_index(address) \
|
|
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
|
|
#define pte_offset_kernel(dir, address) \
|
|
((pte_t *) pmd_page_kernel(*(dir)) + pte_index(address))
|
|
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
|
|
#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
|
|
#define pte_unmap(pte) do { } while (0)
|
|
#define pte_unmap_nested(pte) do { } while (0)
|
|
|
|
struct vm_area_struct;
|
|
extern void update_mmu_cache(struct vm_area_struct * vma,
|
|
unsigned long address, pte_t pte);
|
|
|
|
/* Encode and de-code a swap entry */
|
|
/*
|
|
* NOTE: We should set ZEROs at the position of _PAGE_PRESENT
|
|
* and _PAGE_PROTNONE bits
|
|
*/
|
|
#define __swp_type(x) ((x).val & 0xff)
|
|
#define __swp_offset(x) ((x).val >> 10)
|
|
#define __swp_entry(type, offset) ((swp_entry_t) { (type) | ((offset) << 10) })
|
|
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
|
|
#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
|
|
|
|
/*
|
|
* Encode and decode a nonlinear file mapping entry
|
|
*/
|
|
#define PTE_FILE_MAX_BITS 29
|
|
#define pte_to_pgoff(pte) (pte_val(pte) >> 1)
|
|
#define pgoff_to_pte(off) ((pte_t) { ((off) << 1) | _PAGE_FILE })
|
|
|
|
typedef pte_t *pte_addr_t;
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#define kern_addr_valid(addr) (1)
|
|
|
|
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
|
|
remap_pfn_range(vma, vaddr, pfn, size, prot)
|
|
|
|
#define MK_IOSPACE_PFN(space, pfn) (pfn)
|
|
#define GET_IOSPACE(pfn) 0
|
|
#define GET_PFN(pfn) (pfn)
|
|
|
|
struct mm_struct;
|
|
|
|
/*
|
|
* No page table caches to initialise
|
|
*/
|
|
#define pgtable_cache_init() do { } while (0)
|
|
|
|
#ifndef CONFIG_MMU
|
|
extern unsigned int kobjsize(const void *objp);
|
|
#endif /* !CONFIG_MMU */
|
|
|
|
#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
|
|
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
|
|
extern pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
|
|
#endif
|
|
|
|
#include <asm-generic/pgtable.h>
|
|
|
|
#endif /* __ASM_SH_PAGE_H */
|
|
|