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Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
-rw-r--r--arch/mips/mm/tlb-r4k.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index c17d7627f872..5a5c7fec645e 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -28,25 +28,28 @@
extern void build_tlb_refill_handler(void);
/*
- * LOONGSON2/3 has a 4 entry itlb which is a subset of dtlb,
- * unfortunately, itlb is not totally transparent to software.
+ * LOONGSON-2 has a 4 entry itlb which is a subset of jtlb, LOONGSON-3 has
+ * a 4 entry itlb and a 4 entry dtlb which are subsets of jtlb. Unfortunately,
+ * itlb/dtlb are not totally transparent to software.
*/
-static inline void flush_itlb(void)
+static inline void flush_micro_tlb(void)
{
switch (current_cpu_type()) {
case CPU_LOONGSON2:
+ write_c0_diag(LOONGSON_DIAG_ITLB);
+ break;
case CPU_LOONGSON3:
- write_c0_diag(4);
+ write_c0_diag(LOONGSON_DIAG_ITLB | LOONGSON_DIAG_DTLB);
break;
default:
break;
}
}
-static inline void flush_itlb_vm(struct vm_area_struct *vma)
+static inline void flush_micro_tlb_vm(struct vm_area_struct *vma)
{
if (vma->vm_flags & VM_EXEC)
- flush_itlb();
+ flush_micro_tlb();
}
void local_flush_tlb_all(void)
@@ -93,7 +96,7 @@ void local_flush_tlb_all(void)
tlbw_use_hazard();
write_c0_entryhi(old_ctx);
htw_start();
- flush_itlb();
+ flush_micro_tlb();
local_irq_restore(flags);
}
EXPORT_SYMBOL(local_flush_tlb_all);
@@ -159,7 +162,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
} else {
drop_mmu_context(mm, cpu);
}
- flush_itlb();
+ flush_micro_tlb();
local_irq_restore(flags);
}
}
@@ -205,7 +208,7 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
} else {
local_flush_tlb_all();
}
- flush_itlb();
+ flush_micro_tlb();
local_irq_restore(flags);
}
@@ -240,7 +243,7 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
finish:
write_c0_entryhi(oldpid);
htw_start();
- flush_itlb_vm(vma);
+ flush_micro_tlb_vm(vma);
local_irq_restore(flags);
}
}
@@ -274,7 +277,7 @@ void local_flush_tlb_one(unsigned long page)
}
write_c0_entryhi(oldpid);
htw_start();
- flush_itlb();
+ flush_micro_tlb();
local_irq_restore(flags);
}
@@ -301,7 +304,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
local_irq_save(flags);
htw_stop();
- pid = read_c0_entryhi() & ASID_MASK;
+ pid = read_c0_entryhi() & cpu_asid_mask(&current_cpu_data);
address &= (PAGE_MASK << 1);
write_c0_entryhi(address | pid);
pgdp = pgd_offset(vma->vm_mm, address);
@@ -336,10 +339,12 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
#if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32)
#ifdef CONFIG_XPA
write_c0_entrylo0(pte_to_entrylo(ptep->pte_high));
- writex_c0_entrylo0(ptep->pte_low & _PFNX_MASK);
+ if (cpu_has_xpa)
+ writex_c0_entrylo0(ptep->pte_low & _PFNX_MASK);
ptep++;
write_c0_entrylo1(pte_to_entrylo(ptep->pte_high));
- writex_c0_entrylo1(ptep->pte_low & _PFNX_MASK);
+ if (cpu_has_xpa)
+ writex_c0_entrylo1(ptep->pte_low & _PFNX_MASK);
#else
write_c0_entrylo0(ptep->pte_high);
ptep++;
@@ -357,7 +362,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
}
tlbw_use_hazard();
htw_start();
- flush_itlb_vm(vma);
+ flush_micro_tlb_vm(vma);
local_irq_restore(flags);
}