diff options
Diffstat (limited to 'arch/arm/mm/tlb-v3.S')
| -rw-r--r-- | arch/arm/mm/tlb-v3.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S new file mode 100644 index 000000000000..44b0daeaff9b --- /dev/null +++ b/arch/arm/mm/tlb-v3.S @@ -0,0 +1,52 @@ +/* + * linux/arch/arm/mm/tlbv3.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 3 TLB handling functions. + * + * Processors: ARM610, ARM710. + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/constants.h> +#include <asm/tlbflush.h> +#include "proc-macros.S" + + .align 5 +/* + * v3_flush_user_tlb_range(start, end, mm) + * + * Invalidate a range of TLB entries in the specified address space. + * + * - start - range start address + * - end - range end address + * - mm - mm_struct describing address space + */ + .align 5 +ENTRY(v3_flush_user_tlb_range) + vma_vm_mm r2, r2 + act_mm r3 @ get current->active_mm + teq r2, r3 @ == mm ? + movne pc, lr @ no, we dont do anything +ENTRY(v3_flush_kern_tlb_range) + bic r0, r0, #0x0ff + bic r0, r0, #0xf00 +1: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry + add r0, r0, #PAGE_SZ + cmp r0, r1 + blo 1b + mov pc, lr + + __INITDATA + + .type v3_tlb_fns, #object +ENTRY(v3_tlb_fns) + .long v3_flush_user_tlb_range + .long v3_flush_kern_tlb_range + .long v3_tlb_flags + .size v3_tlb_fns, . - v3_tlb_fns |