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58d0ba57 CM |
1 | /* |
2 | * Based on arch/arm/mm/tlb.S | |
3 | * | |
4 | * Copyright (C) 1997-2002 Russell King | |
5 | * Copyright (C) 2012 ARM Ltd. | |
6 | * Written by Catalin Marinas <catalin.marinas@arm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | #include <linux/linkage.h> | |
21 | #include <asm/assembler.h> | |
22 | #include <asm/asm-offsets.h> | |
23 | #include <asm/page.h> | |
24 | #include <asm/tlbflush.h> | |
25 | #include "proc-macros.S" | |
26 | ||
27 | /* | |
28 | * __cpu_flush_user_tlb_range(start, end, vma) | |
29 | * | |
30 | * Invalidate a range of TLB entries in the specified address space. | |
31 | * | |
32 | * - start - start address (may not be aligned) | |
33 | * - end - end address (exclusive, may not be aligned) | |
34 | * - vma - vma_struct describing address range | |
35 | */ | |
36 | ENTRY(__cpu_flush_user_tlb_range) | |
37 | vma_vm_mm x3, x2 // get vma->vm_mm | |
38 | mmid x3, x3 // get vm_mm->context.id | |
39 | dsb sy | |
40 | lsr x0, x0, #12 // align address | |
41 | lsr x1, x1, #12 | |
42 | bfi x0, x3, #48, #16 // start VA and ASID | |
43 | bfi x1, x3, #48, #16 // end VA and ASID | |
44 | 1: tlbi vae1is, x0 // TLB invalidate by address and ASID | |
45 | add x0, x0, #1 | |
46 | cmp x0, x1 | |
47 | b.lo 1b | |
48 | dsb sy | |
49 | ret | |
50 | ENDPROC(__cpu_flush_user_tlb_range) | |
51 | ||
52 | /* | |
53 | * __cpu_flush_kern_tlb_range(start,end) | |
54 | * | |
55 | * Invalidate a range of kernel TLB entries. | |
56 | * | |
57 | * - start - start address (may not be aligned) | |
58 | * - end - end address (exclusive, may not be aligned) | |
59 | */ | |
60 | ENTRY(__cpu_flush_kern_tlb_range) | |
61 | dsb sy | |
62 | lsr x0, x0, #12 // align address | |
63 | lsr x1, x1, #12 | |
64 | 1: tlbi vaae1is, x0 // TLB invalidate by address | |
65 | add x0, x0, #1 | |
66 | cmp x0, x1 | |
67 | b.lo 1b | |
68 | dsb sy | |
69 | isb | |
70 | ret | |
71 | ENDPROC(__cpu_flush_kern_tlb_range) |