arch/csky/abiv2/inc/abi/ckmmu.h

Source file repositories/reference/linux-study-clean/arch/csky/abiv2/inc/abi/ckmmu.h

File Facts

System
Linux kernel
Corpus path
arch/csky/abiv2/inc/abi/ckmmu.h
Extension
.h
Size
2157 bytes
Lines
140
Domain
Architecture Layer
Bucket
arch/csky
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_CSKY_CKMMUV2_H
#define __ASM_CSKY_CKMMUV2_H

#include <abi/reg_ops.h>
#include <asm/barrier.h>

static inline int read_mmu_index(void)
{
	return mfcr("cr<0, 15>");
}

static inline void write_mmu_index(int value)
{
	mtcr("cr<0, 15>", value);
}

static inline int read_mmu_entrylo0(void)
{
	return mfcr("cr<2, 15>");
}

static inline int read_mmu_entrylo1(void)
{
	return mfcr("cr<3, 15>");
}

static inline void write_mmu_pagemask(int value)
{
	mtcr("cr<6, 15>", value);
}

static inline int read_mmu_entryhi(void)
{
	return mfcr("cr<4, 15>");
}

static inline void write_mmu_entryhi(int value)
{
	mtcr("cr<4, 15>", value);
}

static inline unsigned long read_mmu_msa0(void)
{
	return mfcr("cr<30, 15>");
}

static inline void write_mmu_msa0(unsigned long value)
{
	mtcr("cr<30, 15>", value);
}

static inline unsigned long read_mmu_msa1(void)
{
	return mfcr("cr<31, 15>");
}

static inline void write_mmu_msa1(unsigned long value)
{
	mtcr("cr<31, 15>", value);
}

/*
 * TLB operations.
 */
static inline void tlb_probe(void)
{
	mtcr("cr<8, 15>", 0x80000000);
}

static inline void tlb_read(void)
{
	mtcr("cr<8, 15>", 0x40000000);
}

static inline void tlb_invalid_all(void)
{
#ifdef CONFIG_CPU_HAS_TLBI
	sync_is();
	asm volatile(
		"tlbi.alls	\n"
		"sync.i		\n"
		:
		:
		: "memory");
#else
	mtcr("cr<8, 15>", 0x04000000);
#endif
}

static inline void local_tlb_invalid_all(void)

Annotation

Implementation Notes