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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1994 Waldorf GMBH
* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle
* Copyright (C) 1996 Paul M. Antoine
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 2004 Maciej W. Rozycki
*/
#ifndef __ASM_CPU_INFO_H
#define __ASM_CPU_INFO_H
#include <linux/types.h>
#include <asm/cache.h>
/*
* Descriptor for a cache
*/
struct cache_desc {
unsigned int waysize; /* Bytes per way */
unsigned short sets; /* Number of lines per set */
unsigned char ways; /* Number of ways */
unsigned char linesz; /* Size of line in bytes */
unsigned char waybit; /* Bits to select in a cache set */
unsigned char flags; /* Flags describing cache properties */
};
/*
* Flag definitions
*/
#define MIPS_CACHE_NOT_PRESENT 0x00000001
#define MIPS_CACHE_VTAG 0x00000002 /* Virtually tagged cache */
#define MIPS_CACHE_ALIASES 0x00000004 /* Cache could have aliases */
#define MIPS_CACHE_IC_F_DC 0x00000008 /* Ic can refill from D-cache */
#define MIPS_IC_SNOOPS_REMOTE 0x00000010 /* Ic snoops remote stores */
#define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */
struct cpuinfo_mips {
unsigned int udelay_val;
unsigned int asid_cache;
/*
* Capability and feature descriptor structure for MIPS CPU
*/
unsigned long options;
unsigned long ases;
unsigned int processor_id;
unsigned int fpu_id;
unsigned int cputype;
int isa_level;
int tlbsize;
struct cache_desc icache; /* Primary I-cache */
struct cache_desc dcache; /* Primary D or combined I/D cache */
struct cache_desc scache; /* Secondary cache */
struct cache_desc tcache; /* Tertiary/split secondary cache */
int srsets; /* Shadow register sets */
int core; /* physical core number */
#ifdef CONFIG_64BIT
int vmbits; /* Virtual memory size in bits */
#endif
#if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_MIPS_MT_SMTC)
/*
* In the MIPS MT "SMTC" model, each TC is considered
* to be a "CPU" for the purposes of scheduling, but
* exception resources, ASID spaces, etc, are common
* to all TCs within the same VPE.
*/
int vpe_id; /* Virtual Processor number */
#endif
#ifdef CONFIG_MIPS_MT_SMTC
int tc_id; /* Thread Context number */
#endif
void *data; /* Additional data */
unsigned int watch_reg_count; /* Number that exist */
unsigned int watch_reg_use_cnt; /* Usable by ptrace */
#define NUM_WATCH_REGS 4
u16 watch_reg_masks[NUM_WATCH_REGS];
unsigned int kscratch_mask; /* Usable KScratch mask. */
} __attribute__((aligned(SMP_CACHE_BYTES)));
extern struct cpuinfo_mips cpu_data[];
#define current_cpu_data cpu_data[smp_processor_id()]
#define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
#define boot_cpu_data cpu_data[0]
extern void cpu_probe(void);
extern void cpu_report(void);
extern const char *__cpu_name[];
#define cpu_name_string() __cpu_name[smp_processor_id()]
#endif /* __ASM_CPU_INFO_H */