1 /*
2 * include/asm-sh/tlb_64.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 #ifndef __ASM_SH_TLB_64_H
11 #define __ASM_SH_TLB_64_H
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 - Iterate over free (non-wired) DTLB entries
25 *
26 * @tlb: TLB entry
27 */
28 #define for_each_dtlb_entry(tlb) \
29 for (tlb = cpu_data->dtlb.first; \
30 tlb <= cpu_data->dtlb.last; \
31 tlb += cpu_data->dtlb.step)
32
33 /**
34 * for_each_itlb_entry - Iterate over free (non-wired) ITLB entries
35 *
36 * @tlb: TLB entry
37 */
38 #define for_each_itlb_entry(tlb) \
39 for (tlb = cpu_data->itlb.first; \
40 tlb <= cpu_data->itlb.last; \
41 tlb += cpu_data->itlb.step)
42
43 /**
44 * __flush_tlb_slot - Flushes TLB slot @slot.
45 *
46 * @slot: Address of TLB slot.
47 */
__flush_tlb_slot(unsigned long long slot)48 static inline void __flush_tlb_slot(unsigned long long slot)
49 {
50 __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
51 }
52
53 #ifdef CONFIG_MMU
54 /* arch/sh64/mm/tlb.c */
55 int sh64_tlb_init(void);
56 unsigned long long sh64_next_free_dtlb_entry(void);
57 unsigned long long sh64_get_wired_dtlb_entry(void);
58 int sh64_put_wired_dtlb_entry(unsigned long long entry);
59 void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
60 unsigned long asid, unsigned long paddr);
61 void sh64_teardown_tlb_slot(unsigned long long config_addr);
62 #else
63 #define sh64_tlb_init() do { } while (0)
64 #define sh64_next_free_dtlb_entry() (0)
65 #define sh64_get_wired_dtlb_entry() (0)
66 #define sh64_put_wired_dtlb_entry(entry) do { } while (0)
67 #define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0)
68 #define sh64_teardown_tlb_slot(addr) do { } while (0)
69 #endif /* CONFIG_MMU */
70 #endif /* __ASSEMBLY__ */
71 #endif /* __ASM_SH_TLB_64_H */
72