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 */ 48static 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 */ 55int sh64_tlb_init(void); 56unsigned long long sh64_next_free_dtlb_entry(void); 57unsigned long long sh64_get_wired_dtlb_entry(void); 58int sh64_put_wired_dtlb_entry(unsigned long long entry); 59void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, 60 unsigned long asid, unsigned long paddr); 61void 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