diff options
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/mmu_context.h | 10 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 27 |
2 files changed, 37 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index 2e373da5f8e9..2f82568a3ee4 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -20,10 +20,20 @@ #include <asm/tlbflush.h> #include <asm-generic/mm_hooks.h> +#define htw_set_pwbase(pgd) \ +do { \ + if (cpu_has_htw) { \ + write_c0_pwbase(pgd); \ + back_to_back_c0_hazard(); \ + htw_reset(); \ + } \ +} while (0) + #define TLBMISS_HANDLER_SETUP_PGD(pgd) \ do { \ extern void tlbmiss_handler_setup_pgd(unsigned long); \ tlbmiss_handler_setup_pgd((unsigned long)(pgd)); \ + htw_set_pwbase((unsigned long)pgd); \ } while (0) #ifdef CONFIG_MIPS_PGD_C0_CONTEXT diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 539ddd148bbb..027c74db13f9 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -97,6 +97,31 @@ 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) + #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) #define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL)) @@ -131,6 +156,7 @@ 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 @@ -168,6 +194,7 @@ 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 |