2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1994 Waldorf GMBH
7 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle
8 * Copyright (C) 1996 Paul M. Antoine
9 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
10 * Copyright (C) 2004 Maciej W. Rozycki
12 #ifndef __ASM_CPU_INFO_H
13 #define __ASM_CPU_INFO_H
15 #include <asm/cache.h>
18 * Descriptor for a cache
21 unsigned int waysize; /* Bytes per way */
22 unsigned short sets; /* Number of lines per set */
23 unsigned char ways; /* Number of ways */
24 unsigned char linesz; /* Size of line in bytes */
25 unsigned char waybit; /* Bits to select in a cache set */
26 unsigned char flags; /* Flags describing cache properties */
32 #define MIPS_CACHE_NOT_PRESENT 0x00000001
33 #define MIPS_CACHE_VTAG 0x00000002 /* Virtually tagged cache */
34 #define MIPS_CACHE_ALIASES 0x00000004 /* Cache could have aliases */
35 #define MIPS_CACHE_IC_F_DC 0x00000008 /* Ic can refill from D-cache */
36 #define MIPS_IC_SNOOPS_REMOTE 0x00000010 /* Ic snoops remote stores */
37 #define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */
40 unsigned long udelay_val;
41 unsigned long asid_cache;
44 * Capability and feature descriptor structure for MIPS CPU
46 unsigned long options;
48 unsigned int processor_id;
53 struct cache_desc icache; /* Primary I-cache */
54 struct cache_desc dcache; /* Primary D or combined I/D cache */
55 struct cache_desc scache; /* Secondary cache */
56 struct cache_desc tcache; /* Tertiary/split secondary cache */
57 #if defined(CONFIG_MIPS_MT_SMTC)
59 * In the MIPS MT "SMTC" model, each TC is considered
60 * to be a "CPU" for the purposes of scheduling, but
61 * exception resources, ASID spaces, etc, are common
62 * to all TCs within the same VPE.
64 int vpe_id; /* Virtual Processor number */
65 int tc_id; /* Thread Context number */
66 #endif /* CONFIG_MIPS_MT */
67 void *data; /* Additional data */
68 } __attribute__((aligned(SMP_CACHE_BYTES)));
70 extern struct cpuinfo_mips cpu_data[];
71 #define current_cpu_data cpu_data[smp_processor_id()]
72 #define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
74 extern void cpu_probe(void);
75 extern void cpu_report(void);
77 extern const char *__cpu_name[];
78 #define cpu_name_string() __cpu_name[smp_processor_id()]
80 #endif /* __ASM_CPU_INFO_H */