/* * include/asm-sh64/tlb.h * * Copyright (C) 2003 Paul Mundt * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * */ #ifndef __ASM_SH64_TLB_H #define __ASM_SH64_TLB_H /* * Note! These are mostly unused, we just need the xTLB_LAST_VAR_UNRESTRICTED * for head.S! Once this limitation is gone, we can clean the rest of this up. */ /* ITLB defines */ #define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */ #define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */ /* DTLB defines */ #define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */ #define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */ #ifndef __ASSEMBLY__ /** * for_each_dtlb_entry * * @tlb: TLB entry * * Iterate over free (non-wired) DTLB entries */ #define for_each_dtlb_entry(tlb) \ for (tlb = cpu_data->dtlb.first; \ tlb <= cpu_data->dtlb.last; \ tlb += cpu_data->dtlb.step) /** * for_each_itlb_entry * * @tlb: TLB entry * * Iterate over free (non-wired) ITLB entries */ #define for_each_itlb_entry(tlb) \ for (tlb = cpu_data->itlb.first; \ tlb <= cpu_data->itlb.last; \ tlb += cpu_data->itlb.step) /** * __flush_tlb_slot * * @slot: Address of TLB slot. * * Flushes TLB slot @slot. */ static inline void __flush_tlb_slot(unsigned long long slot) { __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot)); } /* arch/sh64/mm/tlb.c */ extern int sh64_tlb_init(void); extern unsigned long long sh64_next_free_dtlb_entry(void); extern unsigned long long sh64_get_wired_dtlb_entry(void); extern int sh64_put_wired_dtlb_entry(unsigned long long entry); extern void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, unsigned long asid, unsigned long paddr); extern void sh64_teardown_tlb_slot(unsigned long long config_addr); #define tlb_start_vma(tlb, vma) \ flush_cache_range(vma, vma->vm_start, vma->vm_end) #define tlb_end_vma(tlb, vma) \ flush_tlb_range(vma, vma->vm_start, vma->vm_end) #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) /* * Flush whole TLBs for MM */ #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) #include <asm-generic/tlb.h> #endif /* __ASSEMBLY__ */ #endif /* __ASM_SH64_TLB_H */