diff options
Diffstat (limited to 'arch/nds32/mm/tlb.c')
-rw-r--r-- | arch/nds32/mm/tlb.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/arch/nds32/mm/tlb.c b/arch/nds32/mm/tlb.c deleted file mode 100644 index dd41f5e0712f..000000000000 --- a/arch/nds32/mm/tlb.c +++ /dev/null @@ -1,50 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (C) 2005-2017 Andes Technology Corporation - -#include <linux/spinlock_types.h> -#include <linux/mm.h> -#include <linux/sched.h> -#include <asm/nds32.h> -#include <nds32_intrinsic.h> - -unsigned int cpu_last_cid = { TLB_MISC_mskCID + (2 << TLB_MISC_offCID) }; - -DEFINE_SPINLOCK(cid_lock); - -void local_flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - unsigned long flags, ocid, ncid; - - if ((end - start) > 0x400000) { - __nds32__tlbop_flua(); - __nds32__isb(); - return; - } - - spin_lock_irqsave(&cid_lock, flags); - ocid = __nds32__mfsr(NDS32_SR_TLB_MISC); - ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id; - __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC); - while (start < end) { - __nds32__tlbop_inv(start); - __nds32__isb(); - start += PAGE_SIZE; - } - __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC); - spin_unlock_irqrestore(&cid_lock, flags); -} - -void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) -{ - unsigned long flags, ocid, ncid; - - spin_lock_irqsave(&cid_lock, flags); - ocid = __nds32__mfsr(NDS32_SR_TLB_MISC); - ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id; - __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC); - __nds32__tlbop_inv(addr); - __nds32__isb(); - __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC); - spin_unlock_irqrestore(&cid_lock, flags); -} |