Exemplos de write_c0_entrylo em C++ (Cpp)

Exemplo n.º 1

Arquivo: tlb-r8k.c Projeto: 3sOx/asuswrt-merlin

void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
	unsigned long end)
{
	struct mm_struct *mm = vma->vm_mm;
	int cpu = smp_processor_id();
	unsigned long flags;
	int oldpid, newpid, size;

	if (!cpu_context(cpu, mm))
		return;

	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
	size = (size + 1) >> 1;

	local_irq_save(flags);

	if (size > TFP_TLB_SIZE / 2) {
		drop_mmu_context(mm, cpu);
		goto out_restore;
	}

	oldpid = read_c0_entryhi();
	newpid = cpu_asid(cpu, mm);

	write_c0_entrylo(0);

	start &= PAGE_MASK;
	end += (PAGE_SIZE - 1);
	end &= PAGE_MASK;
	while (start < end) {
		signed long idx;

		write_c0_vaddr(start);
		write_c0_entryhi(start);
		start += PAGE_SIZE;
		tlb_probe();
		idx = read_c0_tlbset();
		if (idx < 0)
			continue;

		write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
		tlb_write();
	}
	write_c0_entryhi(oldpid);

out_restore:
	local_irq_restore(flags);
}

Exemplo n.º 2

Arquivo: tlb-r8k.c Projeto: 12019/hg556a_source

void local_flush_tlb_all(void)
{
	unsigned long flags;
	unsigned long old_ctx;
	int entry;

	local_irq_save(flags);
	/* Save old context and create impossible VPN2 value */
	old_ctx = read_c0_entryhi();
	write_c0_entrylo(0);

	for (entry = 0; entry < TFP_TLB_SIZE; entry++) {
		write_c0_tlbset(entry >> TFP_TLB_SET_SHIFT);
		write_c0_vaddr(entry << PAGE_SHIFT);
		write_c0_entryhi(CKSEG0 + (entry << (PAGE_SHIFT + 1)));
		mtc0_tlbw_hazard();
		tlb_write();
	}
	tlbw_use_hazard();
	write_c0_entryhi(old_ctx);
	local_irq_restore(flags);
}

Exemplo n.º 3

Arquivo: tlb-r8k.c Projeto: 12019/hg556a_source

/* Usable for KV1 addresses only! */
void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
	unsigned long flags;
	int size;

	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
	size = (size + 1) >> 1;

	if (size > TFP_TLB_SIZE / 2) {
		local_flush_tlb_all();
		return;
	}

	local_irq_save(flags);

	write_c0_entrylo(0);

	start &= PAGE_MASK;
	end += (PAGE_SIZE - 1);
	end &= PAGE_MASK;
	while (start < end) {
		signed long idx;

		write_c0_vaddr(start);
		write_c0_entryhi(start);
		start += PAGE_SIZE;
		tlb_probe();
		idx = read_c0_tlbset();
		if (idx < 0)
			continue;

		write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
		tlb_write();
	}

	local_irq_restore(flags);
}