[mirror_ubuntu-kernels.git] / arch / mips / include / asm / tlb.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_TLB_H
#define __ASM_TLB_H

#include <asm/cpu-features.h>
#include <asm/mipsregs.h>

/*
 * MIPS doesn't need any special per-pte or per-vma handling, except
 * we need to flush cache for area to be unmapped.
 */
#define tlb_start_vma(tlb, vma)					\
	do {							\
		if (!tlb->fullmm)				\
			flush_cache_range(vma, vma->vm_start, vma->vm_end); \
	}  while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)

/*
 * .. because we flush the whole mm when it fills up.
 */
#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)

#define _UNIQUE_ENTRYHI(base, idx)					\
		(((base) + ((idx) << (PAGE_SHIFT + 1))) |		\
		 (cpu_has_tlbinv ? MIPS_ENTRYHI_EHINV : 0))
#define UNIQUE_ENTRYHI(idx)		_UNIQUE_ENTRYHI(CKSEG0, idx)
#define UNIQUE_GUEST_ENTRYHI(idx)	_UNIQUE_ENTRYHI(CKSEG1, idx)

static inline unsigned int num_wired_entries(void)
{
	unsigned int wired = read_c0_wired();

	if (cpu_has_mips_r6)
		wired &= MIPSR6_WIRED_WIRED;

	return wired;
}

#include <asm-generic/tlb.h>

#endif /* __ASM_TLB_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __ASM_TLB_H
	3	#define __ASM_TLB_H
	4
10313980 PB	5	#include <asm/cpu-features.h>
	6	#include <asm/mipsregs.h>
	7
1da177e4 LT	8	/*
	9	* MIPS doesn't need any special per-pte or per-vma handling, except
	10	* we need to flush cache for area to be unmapped.
	11	*/
70342287	12	#define tlb_start_vma(tlb, vma) \
1da177e4 LT	13	do { \
	14	if (!tlb->fullmm) \
	15	flush_cache_range(vma, vma->vm_start, vma->vm_end); \
	16	} while (0)
	17	#define tlb_end_vma(tlb, vma) do { } while (0)
	18	#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
	19
	20	/*
	21	* .. because we flush the whole mm when it fills up.
	22	*/
	23	#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
	24
a6c09b9f JH	25	#define _UNIQUE_ENTRYHI(base, idx) \
a6c09b9f JH	26	(((base) + ((idx) << (PAGE_SHIFT + 1))) \| \
6e7f8b8e	27	(cpu_has_tlbinv ? MIPS_ENTRYHI_EHINV : 0))
a6c09b9f JH	28	#define UNIQUE_ENTRYHI(idx) _UNIQUE_ENTRYHI(CKSEG0, idx)
a6c09b9f JH	29	#define UNIQUE_GUEST_ENTRYHI(idx) _UNIQUE_ENTRYHI(CKSEG1, idx)
c01905ee	30
10313980 PB	31	static inline unsigned int num_wired_entries(void)
	32	{
	33	unsigned int wired = read_c0_wired();
	34
	35	if (cpu_has_mips_r6)
	36	wired &= MIPSR6_WIRED_WIRED;
	37
	38	return wired;
	39	}
	40
1da177e4 LT	41	#include <asm-generic/tlb.h>
	42
	43	#endif /* __ASM_TLB_H */