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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
#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
#endif
/* MMU Management regs */
#define ARC_REG_MMU_BCR 0x06f
#define ARC_REG_TLBPD0 0x405
#define ARC_REG_TLBPD1 0x406
#define ARC_REG_TLBINDEX 0x407
#define ARC_REG_TLBCOMMAND 0x408
#define ARC_REG_PID 0x409
#define ARC_REG_SCRATCH_DATA0 0x418
/* Bits in MMU PID register */
#define MMU_ENABLE (1 << 31) /* Enable MMU for process */
/* Error code if probe fails */
#define TLB_LKUP_ERR 0x80000000
#define TLB_DUP_ERR (TLB_LKUP_ERR | 0x00000001)
/* 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
#ifndef __ASSEMBLY__
typedef struct {
unsigned long asid; /* 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 __init read_decode_mmu_bcr(void);
#endif /* !__ASSEMBLY__ */
#endif
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