1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * linux/arch/arm/mm/tlbv4wbi.S
4 *
5 * Copyright (C) 1997-2002 Russell King
6 *
7 * ARM architecture version 4 and version 5 T
8 * These assume a split I/D TLBs, with a writ
9 *
10 * Processors: ARM920 ARM922 ARM925 ARM926 XS
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 /*
21 * v4wb_flush_user_tlb_range(start, end,
22 *
23 * Invalidate a range of TLB entries in t
24 *
25 * - start - range start address
26 * - end - range end address
27 * - mm - mm_struct describing address
28 */
29 .align 5
30 SYM_TYPED_FUNC_START(v4wbi_flush_user_tlb_rang
31 vma_vm_mm ip, r2
32 act_mm r3
33 eors r3, ip, r3
34 retne lr
35 mov r3, #0
36 mcr p15, 0, r3, c7, c10, 4
37 vma_vm_flags r2, r2
38 bic r0, r0, #0x0ff
39 bic r0, r0, #0xf00
40 1: tst r2, #VM_EXEC
41 mcrne p15, 0, r0, c8, c5, 1
42 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(v4wbi_flush_user_tlb_range)
48
49 SYM_TYPED_FUNC_START(v4wbi_flush_kern_tlb_rang
50 mov r3, #0
51 mcr p15, 0, r3, c7, c10, 4
52 bic r0, r0, #0x0ff
53 bic r0, r0, #0xf00
54 1: mcr p15, 0, r0, c8, c5, 1
55 mcr p15, 0, r0, c8, c6, 1
56 add r0, r0, #PAGE_SZ
57 cmp r0, r1
58 blo 1b
59 ret lr
60 SYM_FUNC_END(v4wbi_flush_kern_tlb_range)
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