projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 99ef7c2a JH |
1 | #ifndef __ASM_METAG_TLBFLUSH_H |
| 2 | #define __ASM_METAG_TLBFLUSH_H | |
| 3 | ||
| 4 | #include <linux/io.h> | |
| 5 | #include <linux/sched.h> | |
| 6 | #include <asm/metag_mem.h> | |
| 7 | #include <asm/pgalloc.h> | |
| 8 | ||
| 9 | /* | |
| 10 | * TLB flushing: | |
| 11 | * | |
| 12 | * - flush_tlb() flushes the current mm struct TLBs | |
| 13 | * - flush_tlb_all() flushes all processes TLBs | |
| 14 | * - flush_tlb_mm(mm) flushes the specified mm context TLB's | |
| 15 | * - flush_tlb_page(vma, vmaddr) flushes one page | |
| 16 | * - flush_tlb_range(mm, start, end) flushes a range of pages | |
| 17 | * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages | |
| 18 | * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables | |
| 19 | * | |
| 20 | * FIXME: Meta 2 can flush single TLB entries. | |
| 21 | * | |
| 22 | */ | |
| 23 | ||
| 24 | #if defined(CONFIG_METAG_META21) && !defined(CONFIG_SMP) | |
| 25 | static inline void __flush_tlb(void) | |
| 26 | { | |
| 27 | /* flush TLB entries for just the current hardware thread */ | |
| 28 | int thread = hard_processor_id(); | |
| 29 | metag_out32(0, (LINSYSCFLUSH_TxMMCU_BASE + | |
| 30 | LINSYSCFLUSH_TxMMCU_STRIDE * thread)); | |
| 31 | } | |
| 32 | #else | |
| 33 | static inline void __flush_tlb(void) | |
| 34 | { | |
| 35 | /* flush TLB entries for all hardware threads */ | |
| 36 | metag_out32(0, LINSYSCFLUSH_MMCU); | |
| 37 | } | |
| 38 | #endif /* defined(CONFIG_METAG_META21) && !defined(CONFIG_SMP) */ | |
| 39 | ||
| 40 | #define flush_tlb() __flush_tlb() | |
| 41 | ||
| 42 | #define flush_tlb_all() __flush_tlb() | |
| 43 | ||
| 44 | #define local_flush_tlb_all() __flush_tlb() | |
| 45 | ||
| 46 | static inline void flush_tlb_mm(struct mm_struct *mm) | |
| 47 | { | |
| 48 | if (mm == current->active_mm) | |
| 49 | __flush_tlb(); | |
| 50 | } | |
| 51 | ||
| 52 | static inline void flush_tlb_page(struct vm_area_struct *vma, | |
| 53 | unsigned long addr) | |
| 54 | { | |
| 55 | flush_tlb_mm(vma->vm_mm); | |
| 56 | } | |
| 57 | ||
| 58 | static inline void flush_tlb_range(struct vm_area_struct *vma, | |
| 59 | unsigned long start, unsigned long end) | |
| 60 | { | |
| 61 | flush_tlb_mm(vma->vm_mm); | |
| 62 | } | |
| 63 | ||
| 64 | static inline void flush_tlb_pgtables(struct mm_struct *mm, | |
| 65 | unsigned long start, unsigned long end) | |
| 66 | { | |
| 67 | flush_tlb_mm(mm); | |
| 68 | } | |
| 69 | ||
| 70 | static inline void flush_tlb_kernel_range(unsigned long start, | |
| 71 | unsigned long end) | |
| 72 | { | |
| 73 | flush_tlb_all(); | |
| 74 | } | |
| 75 | ||
| 76 | #endif /* __ASM_METAG_TLBFLUSH_H */ | |
| 77 |