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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mm/tlbv3.S | |
3 | * | |
4 | * Copyright (C) 1997-2002 Russell King | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * ARM architecture version 3 TLB handling functions. | |
11 | * | |
12 | * Processors: ARM610, ARM710. | |
13 | */ | |
14 | #include <linux/linkage.h> | |
15 | #include <linux/init.h> | |
e6ae744d | 16 | #include <asm/asm-offsets.h> |
1da177e4 LT |
17 | #include <asm/tlbflush.h> |
18 | #include "proc-macros.S" | |
19 | ||
20 | .align 5 | |
21 | /* | |
22 | * v3_flush_user_tlb_range(start, end, mm) | |
23 | * | |
24 | * Invalidate a range of TLB entries in the specified address space. | |
25 | * | |
26 | * - start - range start address | |
27 | * - end - range end address | |
28 | * - mm - mm_struct describing address space | |
29 | */ | |
30 | .align 5 | |
31 | ENTRY(v3_flush_user_tlb_range) | |
32 | vma_vm_mm r2, r2 | |
33 | act_mm r3 @ get current->active_mm | |
34 | teq r2, r3 @ == mm ? | |
35 | movne pc, lr @ no, we dont do anything | |
36 | ENTRY(v3_flush_kern_tlb_range) | |
37 | bic r0, r0, #0x0ff | |
38 | bic r0, r0, #0xf00 | |
39 | 1: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry | |
40 | add r0, r0, #PAGE_SZ | |
41 | cmp r0, r1 | |
42 | blo 1b | |
43 | mov pc, lr | |
44 | ||
45 | __INITDATA | |
46 | ||
d7b84d24 DM |
47 | /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ |
48 | define_tlb_functions v3, v3_tlb_flags |