#ifndef _ASM_M32R_TLBFLUSH_H #define _ASM_M32R_TLBFLUSH_H #include <asm/m32r.h> /* * TLB flushing: * * - flush_tlb() flushes the current mm struct TLBs * - flush_tlb_all() flushes all processes TLBs * - flush_tlb_mm(mm) flushes the specified mm context TLB's * - flush_tlb_page(vma, vmaddr) flushes one page * - flush_tlb_range(vma, start, end) flushes a range of pages * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables */ extern void local_flush_tlb_all(void); extern void local_flush_tlb_mm(struct mm_struct *); extern void local_flush_tlb_page(struct vm_area_struct *, unsigned long); extern void local_flush_tlb_range(struct vm_area_struct *, unsigned long, unsigned long); #ifndef CONFIG_SMP #ifdef CONFIG_MMU #define flush_tlb_all() local_flush_tlb_all() #define flush_tlb_mm(mm) local_flush_tlb_mm(mm) #define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page) #define flush_tlb_range(vma, start, end) \ local_flush_tlb_range(vma, start, end) #define flush_tlb_kernel_range(start, end) local_flush_tlb_all() #else /* CONFIG_MMU */ #define flush_tlb_all() do { } while (0) #define flush_tlb_mm(mm) do { } while (0) #define flush_tlb_page(vma, vmaddr) do { } while (0) #define flush_tlb_range(vma, start, end) do { } while (0) #endif /* CONFIG_MMU */ #else /* CONFIG_SMP */ extern void smp_flush_tlb_all(void); extern void smp_flush_tlb_mm(struct mm_struct *); extern void smp_flush_tlb_page(struct vm_area_struct *, unsigned long); extern void smp_flush_tlb_range(struct vm_area_struct *, unsigned long, unsigned long); #define flush_tlb_all() smp_flush_tlb_all() #define flush_tlb_mm(mm) smp_flush_tlb_mm(mm) #define flush_tlb_page(vma, page) smp_flush_tlb_page(vma, page) #define flush_tlb_range(vma, start, end) \ smp_flush_tlb_range(vma, start, end) #define flush_tlb_kernel_range(start, end) smp_flush_tlb_all() #endif /* CONFIG_SMP */ static __inline__ void __flush_tlb_page(unsigned long page) { unsigned int tmpreg0, tmpreg1, tmpreg2; __asm__ __volatile__ ( "seth %0, #high(%4) \n\t" "st %3, @(%5, %0) \n\t" "ldi %1, #1 \n\t" "st %1, @(%6, %0) \n\t" "add3 %1, %0, %7 \n\t" ".fillinsn \n" "1: \n\t" "ld %2, @(%6, %0) \n\t" "bnez %2, 1b \n\t" "ld %0, @%1+ \n\t" "ld %1, @%1 \n\t" "st %2, @+%0 \n\t" "st %2, @+%1 \n\t" : "=&r" (tmpreg0), "=&r" (tmpreg1), "=&r" (tmpreg2) : "r" (page), "i" (MMU_REG_BASE), "i" (MSVA_offset), "i" (MTOP_offset), "i" (MIDXI_offset) : "memory" ); } static __inline__ void __flush_tlb_all(void) { unsigned int tmpreg0, tmpreg1; __asm__ __volatile__ ( "seth %0, #high(%2) \n\t" "or3 %0, %0, #low(%2) \n\t" "ldi %1, #0xc \n\t" "st %1, @%0 \n\t" ".fillinsn \n" "1: \n\t" "ld %1, @%0 \n\t" "bnez %1, 1b \n\t" : "=&r" (tmpreg0), "=&r" (tmpreg1) : "i" (MTOP) : "memory" ); } #define flush_tlb_pgtables(mm, start, end) do { } while (0) extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t); #endif /* _ASM_M32R_TLBFLUSH_H */