1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * linux/arch/arm/mm/tlbv4wb.S
4 *
5 * Copyright (C) 1997-2002 Russell King
6 *
7 * ARM architecture version 4 TLB handling fu
8 * These assume a split I/D TLBs w/o I TLB en
9 *
10 * Processors: SA110 SA1100 SA1110
11 */
12 #include <linux/linkage.h>
13 #include <linux/init.h>
14 #include <linux/cfi_types.h>
15 #include <asm/assembler.h>
16 #include <asm/asm-offsets.h>
17 #include <asm/tlbflush.h>
18 #include "proc-macros.S"
19
20 .align 5
21 /*
22 * v4wb_flush_user_tlb_range(start, end,
23 *
24 * Invalidate a range of TLB entries in t
25 *
26 * - start - range start address
27 * - end - range end address
28 * - mm - mm_struct describing address
29 */
30 .align 5
31 SYM_TYPED_FUNC_START(v4wb_flush_user_tlb_range
32 vma_vm_mm ip, r2
33 act_mm r3
34 eors r3, ip, r3
35 retne lr
36 vma_vm_flags r2, r2
37 mcr p15, 0, r3, c7, c10, 4
38 tst r2, #VM_EXEC
39 mcrne p15, 0, r3, c8, c5, 0
40 bic r0, r0, #0x0ff
41 bic r0, r0, #0xf00
42 1: mcr p15, 0, r0, c8, c6, 1
43 add r0, r0, #PAGE_SZ
44 cmp r0, r1
45 blo 1b
46 ret lr
47 SYM_FUNC_END(v4wb_flush_user_tlb_range)
48
49 /*
50 * v4_flush_kern_tlb_range(start, end)
51 *
52 * Invalidate a range of TLB entries in t
53 * address range.
54 *
55 * - start - virtual address (may not be
56 * - end - virtual address (may not be
57 */
58 SYM_TYPED_FUNC_START(v4wb_flush_kern_tlb_range
59 mov r3, #0
60 mcr p15, 0, r3, c7, c10, 4
61 bic r0, r0, #0x0ff
62 bic r0, r0, #0xf00
63 mcr p15, 0, r3, c8, c5, 0
64 1: mcr p15, 0, r0, c8, c6, 1
65 add r0, r0, #PAGE_SZ
66 cmp r0, r1
67 blo 1b
68 ret lr
69 SYM_FUNC_END(v4wb_flush_kern_tlb_range)
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