2  * This file is subject to the terms and conditions of the GNU General Public
20 #include <asm/cpu-type.h>
30  * LOONGSON-2 has a 4 entry itlb which is a subset of jtlb, LOONGSON-3 has
50 	if (vma->vm_flags & VM_EXEC)  in flush_micro_tlb_vm()
71 	 * If there are any wired entries, fall back to iterating  in local_flush_tlb_all()
109 	struct mm_struct *mm = vma->vm_mm;  in local_flush_tlb_range()
118 		size = (end - start) >> (PAGE_SHIFT + 1);  in local_flush_tlb_range()
171 	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;  in local_flush_tlb_kernel_range()
179 		end += ((PAGE_SIZE << 1) - 1);  in local_flush_tlb_kernel_range()
215 	if (cpu_context(cpu, vma->vm_mm) != 0) {  in local_flush_tlb_page()
227 			write_c0_memorymapid(cpu_asid(cpu, vma->vm_mm));  in local_flush_tlb_page()
229 			write_c0_entryhi(page | cpu_asid(cpu, vma->vm_mm));  in local_flush_tlb_page()
256  * This one is only used for pages with the global bit set so we don't care
306 	if (current->active_mm != vma->vm_mm)  in __update_tlb()
319 	pgdp = pgd_offset(vma->vm_mm, address);  in __update_tlb()
349 		 * update_mmu_cache() is called between pte_offset_map_lock()  in __update_tlb()
350 		 * and pte_unmap_unlock(), so we can assume that ptep is not  in __update_tlb()
356 		write_c0_entrylo0(pte_to_entrylo(ptep->pte_high));  in __update_tlb()
358 			writex_c0_entrylo0(ptep->pte_low & _PFNX_MASK);  in __update_tlb()
360 		write_c0_entrylo1(pte_to_entrylo(ptep->pte_high));  in __update_tlb()
362 			writex_c0_entrylo1(ptep->pte_low & _PFNX_MASK);  in __update_tlb()
364 		write_c0_entrylo0(ptep->pte_high);  in __update_tlb()
366 		write_c0_entrylo1(ptep->pte_high);  in __update_tlb()
395 	unsigned long wired;  in add_wired_entry()
408 	wired = num_wired_entries();  in add_wired_entry()
409 	write_c0_wired(wired + 1);  in add_wired_entry()
410 	write_c0_index(wired);  in add_wired_entry()
411 	tlbw_use_hazard();	/* What is the hazard here? */  in add_wired_entry()
423 	tlbw_use_hazard();	/* What is the hazard here? */  in add_wired_entry()
435 	static unsigned int mask = -1;  in has_transparent_hugepage()
437 	if (mask == -1) {	/* first call comes during __init */  in has_transparent_hugepage()
455  * don't actually want to add a wired entry which remains throughout the
467 	unsigned long wired;  in add_temporary_entry()  local
476 	wired = num_wired_entries();  in add_temporary_entry()
477 	if (--temp_tlb_entry < wired) {  in add_temporary_entry()
480 		ret = -ENOSPC;  in add_temporary_entry()
518 	 *   - On R4600 1.7 the tlbp never hits for pages smaller than  in r4k_tlb_configure()
520 	 *   - The entire mm handling assumes the c0_pagemask register to  in r4k_tlb_configure()
521 	 *     be set to fixed-size pages.  in r4k_tlb_configure()
547 	temp_tlb_entry = current_cpu_data.tlbsize - 1;  in r4k_tlb_configure()
549 	/* From this point on the ARC firmware is dead.	 */  in r4k_tlb_configure()
561 			int wired = current_cpu_data.tlbsize - ntlb;  in tlb_init()  local
562 			write_c0_wired(wired);  in tlb_init()
563 			write_c0_index(wired-1);  in tlb_init()