1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2005-2017 Andes Technology Corporation
4 #include <linux/spinlock_types.h>
6 #include <linux/sched.h>
8 #include <nds32_intrinsic.h>
10 unsigned int cpu_last_cid = { TLB_MISC_mskCID + (2 << TLB_MISC_offCID) };
12 DEFINE_SPINLOCK(cid_lock);
14 void local_flush_tlb_range(struct vm_area_struct *vma,
15 unsigned long start, unsigned long end)
17 unsigned long flags, ocid, ncid;
19 if ((end - start) > 0x400000) {
20 __nds32__tlbop_flua();
25 spin_lock_irqsave(&cid_lock, flags);
26 ocid = __nds32__mfsr(NDS32_SR_TLB_MISC);
27 ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id;
28 __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC);
30 __nds32__tlbop_inv(start);
34 __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC);
35 spin_unlock_irqrestore(&cid_lock, flags);
38 void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
40 unsigned long flags, ocid, ncid;
42 spin_lock_irqsave(&cid_lock, flags);
43 ocid = __nds32__mfsr(NDS32_SR_TLB_MISC);
44 ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id;
45 __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC);
46 __nds32__tlbop_inv(addr);
48 __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC);
49 spin_unlock_irqrestore(&cid_lock, flags);