| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-sh64/tlb.h |
| 3 | * |
| 4 | * Copyright (C) 2003 Paul Mundt |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file "COPYING" in the main directory of this archive |
| 8 | * for more details. |
| 9 | * |
| 10 | */ |
| 11 | #ifndef __ASM_SH64_TLB_H |
| 12 | #define __ASM_SH64_TLB_H |
| 13 | |
| 14 | /* |
| 15 | * Note! These are mostly unused, we just need the xTLB_LAST_VAR_UNRESTRICTED |
| 16 | * for head.S! Once this limitation is gone, we can clean the rest of this up. |
| 17 | */ |
| 18 | |
| 19 | /* ITLB defines */ |
| 20 | #define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */ |
| 21 | #define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */ |
| 22 | |
| 23 | /* DTLB defines */ |
| 24 | #define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */ |
| 25 | #define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */ |
| 26 | |
| 27 | #ifndef __ASSEMBLY__ |
| 28 | |
| 29 | /** |
| 30 | * for_each_dtlb_entry |
| 31 | * |
| 32 | * @tlb: TLB entry |
| 33 | * |
| 34 | * Iterate over free (non-wired) DTLB entries |
| 35 | */ |
| 36 | #define for_each_dtlb_entry(tlb) \ |
| 37 | for (tlb = cpu_data->dtlb.first; \ |
| 38 | tlb <= cpu_data->dtlb.last; \ |
| 39 | tlb += cpu_data->dtlb.step) |
| 40 | |
| 41 | /** |
| 42 | * for_each_itlb_entry |
| 43 | * |
| 44 | * @tlb: TLB entry |
| 45 | * |
| 46 | * Iterate over free (non-wired) ITLB entries |
| 47 | */ |
| 48 | #define for_each_itlb_entry(tlb) \ |
| 49 | for (tlb = cpu_data->itlb.first; \ |
| 50 | tlb <= cpu_data->itlb.last; \ |
| 51 | tlb += cpu_data->itlb.step) |
| 52 | |
| 53 | /** |
| 54 | * __flush_tlb_slot |
| 55 | * |
| 56 | * @slot: Address of TLB slot. |
| 57 | * |
| 58 | * Flushes TLB slot @slot. |
| 59 | */ |
| 60 | static inline void __flush_tlb_slot(unsigned long long slot) |
| 61 | { |
| 62 | __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot)); |
| 63 | } |
| 64 | |
| 65 | /* arch/sh64/mm/tlb.c */ |
| 66 | extern int sh64_tlb_init(void); |
| 67 | extern unsigned long long sh64_next_free_dtlb_entry(void); |
| 68 | extern unsigned long long sh64_get_wired_dtlb_entry(void); |
| 69 | extern int sh64_put_wired_dtlb_entry(unsigned long long entry); |
| 70 | |
| 71 | extern void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, unsigned long asid, unsigned long paddr); |
| 72 | extern void sh64_teardown_tlb_slot(unsigned long long config_addr); |
| 73 | |
| 74 | #define tlb_start_vma(tlb, vma) \ |
| 75 | flush_cache_range(vma, vma->vm_start, vma->vm_end) |
| 76 | |
| 77 | #define tlb_end_vma(tlb, vma) \ |
| 78 | flush_tlb_range(vma, vma->vm_start, vma->vm_end) |
| 79 | |
| 80 | #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) |
| 81 | |
| 82 | /* |
| 83 | * Flush whole TLBs for MM |
| 84 | */ |
| 85 | #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) |
| 86 | |
| 87 | #include <asm-generic/tlb.h> |
| 88 | |
| 89 | #endif /* __ASSEMBLY__ */ |
| 90 | |
| 91 | #endif /* __ASM_SH64_TLB_H */ |
| 92 | |