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1da177e4 | 1 | /* |
959f7d58 | 2 | * include/asm-sh/tlb_64.h |
1da177e4 LT |
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. | |
1da177e4 | 9 | */ |
959f7d58 PM |
10 | #ifndef __ASM_SH_TLB_64_H |
11 | #define __ASM_SH_TLB_64_H | |
1da177e4 LT |
12 | |
13 | /* ITLB defines */ | |
14 | #define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */ | |
15 | #define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */ | |
16 | ||
17 | /* DTLB defines */ | |
18 | #define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */ | |
19 | #define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */ | |
20 | ||
21 | #ifndef __ASSEMBLY__ | |
22 | ||
23 | /** | |
24 | * for_each_dtlb_entry | |
25 | * | |
26 | * @tlb: TLB entry | |
27 | * | |
28 | * Iterate over free (non-wired) DTLB entries | |
29 | */ | |
30 | #define for_each_dtlb_entry(tlb) \ | |
31 | for (tlb = cpu_data->dtlb.first; \ | |
32 | tlb <= cpu_data->dtlb.last; \ | |
33 | tlb += cpu_data->dtlb.step) | |
34 | ||
35 | /** | |
36 | * for_each_itlb_entry | |
37 | * | |
38 | * @tlb: TLB entry | |
39 | * | |
40 | * Iterate over free (non-wired) ITLB entries | |
41 | */ | |
42 | #define for_each_itlb_entry(tlb) \ | |
43 | for (tlb = cpu_data->itlb.first; \ | |
44 | tlb <= cpu_data->itlb.last; \ | |
45 | tlb += cpu_data->itlb.step) | |
46 | ||
47 | /** | |
48 | * __flush_tlb_slot | |
49 | * | |
50 | * @slot: Address of TLB slot. | |
51 | * | |
52 | * Flushes TLB slot @slot. | |
53 | */ | |
54 | static inline void __flush_tlb_slot(unsigned long long slot) | |
55 | { | |
56 | __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot)); | |
57 | } | |
58 | ||
ccd80587 | 59 | #ifdef CONFIG_MMU |
1da177e4 | 60 | /* arch/sh64/mm/tlb.c */ |
959f7d58 PM |
61 | int sh64_tlb_init(void); |
62 | unsigned long long sh64_next_free_dtlb_entry(void); | |
63 | unsigned long long sh64_get_wired_dtlb_entry(void); | |
64 | int sh64_put_wired_dtlb_entry(unsigned long long entry); | |
65 | void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, | |
66 | unsigned long asid, unsigned long paddr); | |
67 | void sh64_teardown_tlb_slot(unsigned long long config_addr); | |
ccd80587 PM |
68 | #else |
69 | #define sh64_tlb_init() do { } while (0) | |
70 | #define sh64_next_free_dtlb_entry() (0) | |
71 | #define sh64_get_wired_dtlb_entry() (0) | |
72 | #define sh64_put_wired_dtlb_entry(entry) do { } while (0) | |
73 | #define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0) | |
74 | #define sh64_teardown_tlb_slot(addr) do { } while (0) | |
75 | #endif /* CONFIG_MMU */ | |
1da177e4 | 76 | #endif /* __ASSEMBLY__ */ |
959f7d58 | 77 | #endif /* __ASM_SH_TLB_64_H */ |