1 /* SPDX-License-Identifier: GPL-2.0
2 *
3 * include/asm-sh/tlb_64.h
4 *
5 * Copyright (C) 2003 Paul Mundt
6 */
7 #ifndef __ASM_SH_TLB_64_H
8 #define __ASM_SH_TLB_64_H
9
10 /* ITLB defines */
11 #define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */
12 #define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */
13
14 /* DTLB defines */
15 #define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */
16 #define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */
17
18 #ifndef __ASSEMBLY__
19
20 /**
21 * for_each_dtlb_entry - Iterate over free (non-wired) DTLB entries
22 *
23 * @tlb: TLB entry
24 */
25 #define for_each_dtlb_entry(tlb) \
26 for (tlb = cpu_data->dtlb.first; \
27 tlb <= cpu_data->dtlb.last; \
28 tlb += cpu_data->dtlb.step)
29
30 /**
31 * for_each_itlb_entry - Iterate over free (non-wired) ITLB entries
32 *
33 * @tlb: TLB entry
34 */
35 #define for_each_itlb_entry(tlb) \
36 for (tlb = cpu_data->itlb.first; \
37 tlb <= cpu_data->itlb.last; \
38 tlb += cpu_data->itlb.step)
39
40 /**
41 * __flush_tlb_slot - Flushes TLB slot @slot.
42 *
43 * @slot: Address of TLB slot.
44 */
__flush_tlb_slot(unsigned long long slot)45 static inline void __flush_tlb_slot(unsigned long long slot)
46 {
47 __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
48 }
49
50 #ifdef CONFIG_MMU
51 /* arch/sh64/mm/tlb.c */
52 int sh64_tlb_init(void);
53 unsigned long long sh64_next_free_dtlb_entry(void);
54 unsigned long long sh64_get_wired_dtlb_entry(void);
55 int sh64_put_wired_dtlb_entry(unsigned long long entry);
56 void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
57 unsigned long asid, unsigned long paddr);
58 void sh64_teardown_tlb_slot(unsigned long long config_addr);
59 #else
60 #define sh64_tlb_init() do { } while (0)
61 #define sh64_next_free_dtlb_entry() (0)
62 #define sh64_get_wired_dtlb_entry() (0)
63 #define sh64_put_wired_dtlb_entry(entry) do { } while (0)
64 #define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0)
65 #define sh64_teardown_tlb_slot(addr) do { } while (0)
66 #endif /* CONFIG_MMU */
67 #endif /* __ASSEMBLY__ */
68 #endif /* __ASM_SH_TLB_64_H */
69
