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 */
45static 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 */
52int sh64_tlb_init(void);
53unsigned long long sh64_next_free_dtlb_entry(void);
54unsigned long long sh64_get_wired_dtlb_entry(void);
55int sh64_put_wired_dtlb_entry(unsigned long long entry);
56void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
57			 unsigned long asid, unsigned long paddr);
58void 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 */