/* * linux/arch/arm/mm/tlbv4.S * * Copyright (C) 1997-2002 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * ARM architecture version 4 TLB handling functions. * These assume a split I/D TLBs, and no write buffer. * * Processors: ARM720T */ #include <linux/linkage.h> #include <linux/init.h> #include <asm/asm-offsets.h> #include <asm/tlbflush.h> #include "proc-macros.S" .align 5 /* * v4_flush_user_tlb_range(start, end, mm) * * Invalidate a range of TLB entries in the specified user address space. * * - start - range start address * - end - range end address * - mm - mm_struct describing address space */ .align 5 ENTRY(v4_flush_user_tlb_range) vma_vm_mm ip, r2 act_mm r3 @ get current->active_mm eors r3, ip, r3 @ == mm ? movne pc, lr @ no, we dont do anything .v4_flush_kern_tlb_range: bic r0, r0, #0x0ff bic r0, r0, #0xf00 1: mcr p15, 0, r0, c8, c7, 1 @ invalidate TLB entry add r0, r0, #PAGE_SZ cmp r0, r1 blo 1b mov pc, lr /* * v4_flush_kern_tlb_range(start, end) * * Invalidate a range of TLB entries in the specified kernel * address range. * * - start - virtual address (may not be aligned) * - end - virtual address (may not be aligned) */ .globl v4_flush_kern_tlb_range .equ v4_flush_kern_tlb_range, .v4_flush_kern_tlb_range __INITDATA /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ define_tlb_functions v4, v4_tlb_flags