2 * linux/arch/arm/kernel/smp_tlb.c
4 * Copyright (C) 2002 ARM Limited, All Rights Reserved.
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.
10 #include <linux/preempt.h>
11 #include <linux/smp.h>
13 #include <asm/smp_plat.h>
14 #include <asm/tlbflush.h>
15 #include <asm/mmu_context.h>
17 /**********************************************************************/
23 struct vm_area_struct *ta_vma;
24 unsigned long ta_start;
28 static inline void ipi_flush_tlb_all(void *ignored)
30 local_flush_tlb_all();
33 static inline void ipi_flush_tlb_mm(void *arg)
35 struct mm_struct *mm = (struct mm_struct *)arg;
37 local_flush_tlb_mm(mm);
40 static inline void ipi_flush_tlb_page(void *arg)
42 struct tlb_args *ta = (struct tlb_args *)arg;
44 local_flush_tlb_page(ta->ta_vma, ta->ta_start);
47 static inline void ipi_flush_tlb_kernel_page(void *arg)
49 struct tlb_args *ta = (struct tlb_args *)arg;
51 local_flush_tlb_kernel_page(ta->ta_start);
54 static inline void ipi_flush_tlb_range(void *arg)
56 struct tlb_args *ta = (struct tlb_args *)arg;
58 local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
61 static inline void ipi_flush_tlb_kernel_range(void *arg)
63 struct tlb_args *ta = (struct tlb_args *)arg;
65 local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end);
68 static inline void ipi_flush_bp_all(void *ignored)
73 static void ipi_flush_tlb_a15_erratum(void *arg)
78 static void broadcast_tlb_a15_erratum(void)
80 if (!erratum_a15_798181())
83 dummy_flush_tlb_a15_erratum();
84 smp_call_function(ipi_flush_tlb_a15_erratum, NULL, 1);
87 static void broadcast_tlb_mm_a15_erratum(struct mm_struct *mm)
90 cpumask_t mask = { CPU_BITS_NONE };
92 if (!erratum_a15_798181())
95 dummy_flush_tlb_a15_erratum();
97 a15_erratum_get_cpumask(this_cpu, mm, &mask);
98 smp_call_function_many(&mask, ipi_flush_tlb_a15_erratum, NULL, 1);
102 void flush_tlb_all(void)
104 if (tlb_ops_need_broadcast())
105 on_each_cpu(ipi_flush_tlb_all, NULL, 1);
108 broadcast_tlb_a15_erratum();
111 void flush_tlb_mm(struct mm_struct *mm)
113 if (tlb_ops_need_broadcast())
114 on_each_cpu_mask(mm_cpumask(mm), ipi_flush_tlb_mm, mm, 1);
117 broadcast_tlb_mm_a15_erratum(mm);
120 void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
122 if (tlb_ops_need_broadcast()) {
126 on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_page,
129 __flush_tlb_page(vma, uaddr);
130 broadcast_tlb_mm_a15_erratum(vma->vm_mm);
133 void flush_tlb_kernel_page(unsigned long kaddr)
135 if (tlb_ops_need_broadcast()) {
138 on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
140 __flush_tlb_kernel_page(kaddr);
141 broadcast_tlb_a15_erratum();
144 void flush_tlb_range(struct vm_area_struct *vma,
145 unsigned long start, unsigned long end)
147 if (tlb_ops_need_broadcast()) {
152 on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range,
155 local_flush_tlb_range(vma, start, end);
156 broadcast_tlb_mm_a15_erratum(vma->vm_mm);
159 void flush_tlb_kernel_range(unsigned long start, unsigned long end)
161 if (tlb_ops_need_broadcast()) {
165 on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
167 local_flush_tlb_kernel_range(start, end);
168 broadcast_tlb_a15_erratum();
171 void flush_bp_all(void)
173 if (tlb_ops_need_broadcast())
174 on_each_cpu(ipi_flush_bp_all, NULL, 1);