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yaml
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r: 27056
b: refs/heads/master
c: 6e95389
h: refs/heads/master
v: v3
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Sergei Shtylyov authored and Ralf Baechle committed May 31, 2006
1 parent b66b89c commit 8ccfecf
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2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 343fdc39713d9c2fe836523e8f2dfc6a3ac39122
refs/heads/master: 6e9538917c5f62c1a1598da9b898702800801b98
88 changes: 49 additions & 39 deletions trunk/include/asm-mips/pgtable.h
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Expand Up @@ -82,38 +82,47 @@ extern void paging_init(void);
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#define pmd_page_kernel(pmd) pmd_val(pmd)

#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)

#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)

#define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL))
#define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT)

static inline void set_pte(pte_t *ptep, pte_t pte)
{
ptep->pte_high = pte.pte_high;
smp_wmb();
ptep->pte_low = pte.pte_low;
//printk("pte_high %x pte_low %x\n", ptep->pte_high, ptep->pte_low);

if (pte_val(pte) & _PAGE_GLOBAL) {
if (pte.pte_low & _PAGE_GLOBAL) {
pte_t *buddy = ptep_buddy(ptep);
/*
* Make sure the buddy is global too (if it's !none,
* it better already be global)
*/
if (pte_none(*buddy))
buddy->pte_low |= _PAGE_GLOBAL;
if (pte_none(*buddy)) {
buddy->pte_low |= _PAGE_GLOBAL;
buddy->pte_high |= _PAGE_GLOBAL;
}
}
}
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)

static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
pte_t null = __pte(0);

/* Preserve global status for the pair */
if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL)
set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL));
else
set_pte_at(mm, addr, ptep, __pte(0));
if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL)
null.pte_low = null.pte_high = _PAGE_GLOBAL;

set_pte_at(mm, addr, ptep, null);
}
#else

#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)

/*
* Certain architectures need to do special things when pte's
* within a page table are directly modified. Thus, the following
Expand Down Expand Up @@ -174,75 +183,76 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
*/
static inline int pte_user(pte_t pte) { BUG(); return 0; }
#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
static inline int pte_read(pte_t pte) { return (pte).pte_low & _PAGE_READ; }
static inline int pte_write(pte_t pte) { return (pte).pte_low & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return (pte).pte_low & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return (pte).pte_low & _PAGE_ACCESSED; }
static inline int pte_file(pte_t pte) { return (pte).pte_low & _PAGE_FILE; }
static inline int pte_read(pte_t pte) { return pte.pte_low & _PAGE_READ; }
static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; }
static inline int pte_file(pte_t pte) { return pte.pte_low & _PAGE_FILE; }

static inline pte_t pte_wrprotect(pte_t pte)
{
(pte).pte_low &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
(pte).pte_high &= ~_PAGE_SILENT_WRITE;
pte.pte_low &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
pte.pte_high &= ~_PAGE_SILENT_WRITE;
return pte;
}

static inline pte_t pte_rdprotect(pte_t pte)
{
(pte).pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ);
(pte).pte_high &= ~_PAGE_SILENT_READ;
pte.pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ);
pte.pte_high &= ~_PAGE_SILENT_READ;
return pte;
}

static inline pte_t pte_mkclean(pte_t pte)
{
(pte).pte_low &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
(pte).pte_high &= ~_PAGE_SILENT_WRITE;
pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE);
pte.pte_high &= ~_PAGE_SILENT_WRITE;
return pte;
}

static inline pte_t pte_mkold(pte_t pte)
{
(pte).pte_low &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
(pte).pte_high &= ~_PAGE_SILENT_READ;
pte.pte_low &= ~(_PAGE_ACCESSED | _PAGE_SILENT_READ);
pte.pte_high &= ~_PAGE_SILENT_READ;
return pte;
}

static inline pte_t pte_mkwrite(pte_t pte)
{
(pte).pte_low |= _PAGE_WRITE;
if ((pte).pte_low & _PAGE_MODIFIED) {
(pte).pte_low |= _PAGE_SILENT_WRITE;
(pte).pte_high |= _PAGE_SILENT_WRITE;
pte.pte_low |= _PAGE_WRITE;
if (pte.pte_low & _PAGE_MODIFIED) {
pte.pte_low |= _PAGE_SILENT_WRITE;
pte.pte_high |= _PAGE_SILENT_WRITE;
}
return pte;
}

static inline pte_t pte_mkread(pte_t pte)
{
(pte).pte_low |= _PAGE_READ;
if ((pte).pte_low & _PAGE_ACCESSED) {
(pte).pte_low |= _PAGE_SILENT_READ;
(pte).pte_high |= _PAGE_SILENT_READ;
pte.pte_low |= _PAGE_READ;
if (pte.pte_low & _PAGE_ACCESSED) {
pte.pte_low |= _PAGE_SILENT_READ;
pte.pte_high |= _PAGE_SILENT_READ;
}
return pte;
}

static inline pte_t pte_mkdirty(pte_t pte)
{
(pte).pte_low |= _PAGE_MODIFIED;
if ((pte).pte_low & _PAGE_WRITE) {
(pte).pte_low |= _PAGE_SILENT_WRITE;
(pte).pte_high |= _PAGE_SILENT_WRITE;
pte.pte_low |= _PAGE_MODIFIED;
if (pte.pte_low & _PAGE_WRITE) {
pte.pte_low |= _PAGE_SILENT_WRITE;
pte.pte_high |= _PAGE_SILENT_WRITE;
}
return pte;
}

static inline pte_t pte_mkyoung(pte_t pte)
{
(pte).pte_low |= _PAGE_ACCESSED;
if ((pte).pte_low & _PAGE_READ)
(pte).pte_low |= _PAGE_SILENT_READ;
(pte).pte_high |= _PAGE_SILENT_READ;
pte.pte_low |= _PAGE_ACCESSED;
if (pte.pte_low & _PAGE_READ)
pte.pte_low |= _PAGE_SILENT_READ;
pte.pte_high |= _PAGE_SILENT_READ;
return pte;
}
#else
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