diff options
Diffstat (limited to 'arch/mips/include/asm/pgtable.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 45 |
1 files changed, 40 insertions, 5 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 539ddd148bb..d6d1928539b 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -97,6 +97,34 @@ extern void paging_init(void); #define pmd_page_vaddr(pmd) pmd_val(pmd) +#define htw_stop() \ +do { \ + if (cpu_has_htw) \ + write_c0_pwctl(read_c0_pwctl() & \ + ~(1 << MIPS_PWCTL_PWEN_SHIFT)); \ +} while(0) + +#define htw_start() \ +do { \ + if (cpu_has_htw) \ + write_c0_pwctl(read_c0_pwctl() | \ + (1 << MIPS_PWCTL_PWEN_SHIFT)); \ +} while(0) + + +#define htw_reset() \ +do { \ + if (cpu_has_htw) { \ + htw_stop(); \ + back_to_back_c0_hazard(); \ + htw_start(); \ + back_to_back_c0_hazard(); \ + } \ +} while(0) + +extern void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, + pte_t pteval); + #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) #define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL)) @@ -120,7 +148,6 @@ static inline void set_pte(pte_t *ptep, pte_t pte) } } } -#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) { @@ -131,6 +158,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt null.pte_low = null.pte_high = _PAGE_GLOBAL; set_pte_at(mm, addr, ptep, null); + htw_reset(); } #else @@ -157,7 +185,6 @@ static inline void set_pte(pte_t *ptep, pte_t pteval) } #endif } -#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) { @@ -168,6 +195,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt else #endif set_pte_at(mm, addr, ptep, __pte(0)); + htw_reset(); } #endif @@ -338,6 +366,16 @@ static inline pgprot_t pgprot_noncached(pgprot_t _prot) return __pgprot(prot); } +static inline pgprot_t pgprot_writecombine(pgprot_t _prot) +{ + unsigned long prot = pgprot_val(_prot); + + /* cpu_data[0].writecombine is already shifted by _CACHE_SHIFT */ + prot = (prot & ~_CACHE_MASK) | cpu_data[0].writecombine; + + return __pgprot(prot); +} + /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. @@ -363,15 +401,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) extern void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte); -extern void __update_cache(struct vm_area_struct *vma, unsigned long address, - pte_t pte); static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) { pte_t pte = *ptep; __update_tlb(vma, address, pte); - __update_cache(vma, address, pte); } static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, |