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 */ 69