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/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef _ASM_ARC_MMU_H
#define _ASM_ARC_MMU_H

#ifndef __ASSEMBLY__
#include <linux/threads.h>	/* NR_CPUS */
#endif

#if defined(CONFIG_ARC_MMU_V1)
#define CONFIG_ARC_MMU_VER 1
#elif defined(CONFIG_ARC_MMU_V2)
#define CONFIG_ARC_MMU_VER 2
#elif defined(CONFIG_ARC_MMU_V3)
#define CONFIG_ARC_MMU_VER 3
#elif defined(CONFIG_ARC_MMU_V4)
#define CONFIG_ARC_MMU_VER 4
#endif

/* MMU Management regs */
#define ARC_REG_MMU_BCR		0x06f
#if (CONFIG_ARC_MMU_VER < 4)
#define ARC_REG_TLBPD0		0x405
#define ARC_REG_TLBPD1		0x406
#define ARC_REG_TLBPD1HI	0	/* Dummy: allows code sharing with ARC700 */
#define ARC_REG_TLBINDEX	0x407
#define ARC_REG_TLBCOMMAND	0x408
#define ARC_REG_PID		0x409
#define ARC_REG_SCRATCH_DATA0	0x418
#else
#define ARC_REG_TLBPD0		0x460
#define ARC_REG_TLBPD1		0x461
#define ARC_REG_TLBPD1HI	0x463
#define ARC_REG_TLBINDEX	0x464
#define ARC_REG_TLBCOMMAND	0x465
#define ARC_REG_PID		0x468
#define ARC_REG_SCRATCH_DATA0	0x46c
#endif

/* Bits in MMU PID register */
#define __TLB_ENABLE		(1 << 31)
#define __PROG_ENABLE		(1 << 30)
#define MMU_ENABLE		(__TLB_ENABLE | __PROG_ENABLE)

/* Error code if probe fails */
#define TLB_LKUP_ERR		0x80000000

#if (CONFIG_ARC_MMU_VER < 4)
#define TLB_DUP_ERR	(TLB_LKUP_ERR | 0x00000001)
#else
#define TLB_DUP_ERR	(TLB_LKUP_ERR | 0x40000000)
#endif

/* TLB Commands */
#define TLBWrite    0x1
#define TLBRead     0x2
#define TLBGetIndex 0x3
#define TLBProbe    0x4

#if (CONFIG_ARC_MMU_VER >= 2)
#define TLBWriteNI  0x5		/* write JTLB without inv uTLBs */
#define TLBIVUTLB   0x6		/* explicitly inv uTLBs */
#endif

#if (CONFIG_ARC_MMU_VER >= 4)
#define TLBInsertEntry	0x7
#define TLBDeleteEntry	0x8
#endif

#ifndef __ASSEMBLY__

typedef struct {
	unsigned long asid[NR_CPUS];	/* 8 bit MMU PID + Generation cycle */
} mm_context_t;

#ifdef CONFIG_ARC_DBG_TLB_PARANOIA
void tlb_paranoid_check(unsigned int mm_asid, unsigned long address);
#else
#define tlb_paranoid_check(a, b)
#endif

void arc_mmu_init(void);
extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len);
void read_decode_mmu_bcr(void);

static inline int is_pae40_enabled(void)
{
	return IS_ENABLED(CONFIG_ARC_HAS_PAE40);
}

extern int pae40_exist_but_not_enab(void);

#endif	/* !__ASSEMBLY__ */

#endif

Filemanager

Name Type Size Permission Actions
Kbuild File 681 B 0644
arcregs.h File 8.59 KB 0644
asm-offsets.h File 311 B 0644
atomic.h File 15.14 KB 0644
barrier.h File 1.75 KB 0644
bitops.h File 9.81 KB 0644
bug.h File 938 B 0644
cache.h File 3.77 KB 0644
cacheflush.h File 3.88 KB 0644
checksum.h File 2.45 KB 0644
cmpxchg.h File 5.4 KB 0644
current.h File 695 B 0644
delay.h File 1.99 KB 0644
disasm.h File 3.87 KB 0644
dma-mapping.h File 734 B 0644
dma.h File 459 B 0644
dwarf.h File 892 B 0644
elf.h File 2.15 KB 0644
entry-arcv2.h File 4.85 KB 0644
entry-compact.h File 9.29 KB 0644
entry.h File 6.73 KB 0644
exec.h File 410 B 0644
fb.h File 411 B 0644
futex.h File 3.67 KB 0644
highmem.h File 1.46 KB 0644
hugepage.h File 2.41 KB 0644
io.h File 6.42 KB 0644
irq.h File 825 B 0644
irqflags-arcv2.h File 3.45 KB 0644
irqflags-compact.h File 4.25 KB 0644
irqflags.h File 509 B 0644
kdebug.h File 400 B 0644
kgdb.h File 1.35 KB 0644
kmap_types.h File 489 B 0644
kprobes.h File 1.37 KB 0644
linkage.h File 1.42 KB 0644
mach_desc.h File 2.06 KB 0644
mmu.h File 2.44 KB 0644
mmu_context.h File 5.67 KB 0644
mmzone.h File 989 B 0644
module.h File 661 B 0644
page.h File 2.99 KB 0644
pci.h File 705 B 0644
perf_event.h File 6.86 KB 0644
pgalloc.h File 3.79 KB 0644
pgtable.h File 14.2 KB 0644
processor.h File 4.69 KB 0644
ptrace.h File 3.87 KB 0644
sections.h File 407 B 0644
segment.h File 612 B 0644
serial.h File 644 B 0644
setup.h File 1.18 KB 0644
shmparam.h File 442 B 0644
smp.h File 4.25 KB 0644
spinlock.h File 8.79 KB 0644
spinlock_types.h File 1.03 KB 0644
stacktrace.h File 1.29 KB 0644
string.h File 1.15 KB 0644
switch_to.h File 1.17 KB 0644
syscall.h File 1.57 KB 0644
syscalls.h File 653 B 0644
thread_info.h File 3.39 KB 0644
timex.h File 508 B 0644
tlb-mmu1.h File 3.48 KB 0644
tlb.h File 1.23 KB 0644
tlbflush.h File 1.76 KB 0644
uaccess.h File 18.45 KB 0644
unaligned.h File 771 B 0644
unwind.h File 3.51 KB 0644