8  * Copyright (C) 2001 - 2013 Tensilica Inc.
23 #include <asm/vectors.h>
27 #include <asm-generic/mm_hooks.h>
28 #include <asm-generic/percpu.h>
35 #define cpu_asid_cache(cpu) per_cpu(asid_cache, cpu)  argument
39  * any user or kernel context.  We use the reserved values in the
44  * 2 reserved
45  * 3 reserved
51 #define ASID_MASK	((1 << XCHAL_MMU_ASID_BITS) - 1)
70 static inline void get_new_mmu_context(struct mm_struct *mm, unsigned int cpu)  in get_new_mmu_context()  argument
72 	unsigned long asid = cpu_asid_cache(cpu);  in get_new_mmu_context()
81 	cpu_asid_cache(cpu) = asid;  in get_new_mmu_context()
82 	mm->context.asid[cpu] = asid;  in get_new_mmu_context()
83 	mm->context.cpu = cpu;  in get_new_mmu_context()
86 static inline void get_mmu_context(struct mm_struct *mm, unsigned int cpu)  in get_mmu_context()  argument
93 		unsigned long asid = mm->context.asid[cpu];  in get_mmu_context()
96 				((asid ^ cpu_asid_cache(cpu)) & ~ASID_MASK))  in get_mmu_context()
97 			get_new_mmu_context(mm, cpu);  in get_mmu_context()
101 static inline void activate_context(struct mm_struct *mm, unsigned int cpu)  in activate_context()  argument
103 	get_mmu_context(mm, cpu);  in activate_context()
104 	set_rasid_register(ASID_INSERT(mm->context.asid[cpu]));  in activate_context()
110  * instance.  Valid cpu values are 0..(NR_CPUS-1), so initializing
111  * to -1 says the process has never run on any core.
118 	int cpu;  in init_new_context()  local
119 	for_each_possible_cpu(cpu) {  in init_new_context()
120 		mm->context.asid[cpu] = NO_CONTEXT;  in init_new_context()
122 	mm->context.cpu = -1;  in init_new_context()
129 	unsigned int cpu = smp_processor_id();  in switch_mm()  local
130 	int migrated = next->context.cpu != cpu;  in switch_mm()
134 		next->context.cpu = cpu;  in switch_mm()
137 		activate_context(next, cpu);  in switch_mm()
151 #include <asm-generic/mmu_context.h>