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1da177e4 LT |
1 | /* |
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 | |
4 | * for more details. | |
5 | * | |
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. | |
4194318c | 10 | * Copyright (C) 2004 Maciej W. Rozycki |
1da177e4 LT |
11 | */ |
12 | #ifndef __ASM_CPU_INFO_H | |
13 | #define __ASM_CPU_INFO_H | |
14 | ||
6aa3524c DD |
15 | #include <linux/types.h> |
16 | ||
1da177e4 LT |
17 | #include <asm/cache.h> |
18 | ||
1da177e4 LT |
19 | /* |
20 | * Descriptor for a cache | |
21 | */ | |
22 | struct cache_desc { | |
1da177e4 | 23 | unsigned int waysize; /* Bytes per way */ |
6f2c3fa0 RB |
24 | unsigned short sets; /* Number of lines per set */ |
25 | unsigned char ways; /* Number of ways */ | |
26 | unsigned char linesz; /* Size of line in bytes */ | |
27 | unsigned char waybit; /* Bits to select in a cache set */ | |
28 | unsigned char flags; /* Flags describing cache properties */ | |
1da177e4 LT |
29 | }; |
30 | ||
31 | /* | |
32 | * Flag definitions | |
33 | */ | |
34 | #define MIPS_CACHE_NOT_PRESENT 0x00000001 | |
35 | #define MIPS_CACHE_VTAG 0x00000002 /* Virtually tagged cache */ | |
36 | #define MIPS_CACHE_ALIASES 0x00000004 /* Cache could have aliases */ | |
37 | #define MIPS_CACHE_IC_F_DC 0x00000008 /* Ic can refill from D-cache */ | |
38 | #define MIPS_IC_SNOOPS_REMOTE 0x00000010 /* Ic snoops remote stores */ | |
de62893b | 39 | #define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */ |
1da177e4 LT |
40 | |
41 | struct cpuinfo_mips { | |
e5eb925a | 42 | unsigned long asid_cache; |
1da177e4 LT |
43 | |
44 | /* | |
45 | * Capability and feature descriptor structure for MIPS CPU | |
46 | */ | |
4194318c | 47 | unsigned long ases; |
03a58777 | 48 | unsigned long long options; |
e5eb925a | 49 | unsigned int udelay_val; |
1da177e4 LT |
50 | unsigned int processor_id; |
51 | unsigned int fpu_id; | |
9b26616c MR |
52 | unsigned int fpu_csr31; |
53 | unsigned int fpu_msk31; | |
a5e9a69e | 54 | unsigned int msa_id; |
1da177e4 LT |
55 | unsigned int cputype; |
56 | int isa_level; | |
57 | int tlbsize; | |
75b5b5e0 LY |
58 | int tlbsizevtlb; |
59 | int tlbsizeftlbsets; | |
60 | int tlbsizeftlbways; | |
70342287 RB |
61 | struct cache_desc icache; /* Primary I-cache */ |
62 | struct cache_desc dcache; /* Primary D or combined I/D cache */ | |
63 | struct cache_desc scache; /* Secondary cache */ | |
64 | struct cache_desc tcache; /* Tertiary/split secondary cache */ | |
65 | int srsets; /* Shadow register sets */ | |
bda4584c | 66 | int package;/* physical package number */ |
0ab7aefc | 67 | int core; /* physical core number */ |
91dfc423 | 68 | #ifdef CONFIG_64BIT |
70342287 | 69 | int vmbits; /* Virtual memory size in bits */ |
91dfc423 | 70 | #endif |
b633648c | 71 | #ifdef CONFIG_MIPS_MT_SMP |
41c594ab | 72 | /* |
b633648c RB |
73 | * There is not necessarily a 1:1 mapping of VPE num to CPU number |
74 | * in particular on multi-core systems. | |
41c594ab | 75 | */ |
70342287 | 76 | int vpe_id; /* Virtual Processor number */ |
0ab7aefc | 77 | #endif |
70342287 | 78 | void *data; /* Additional data */ |
6aa3524c DD |
79 | unsigned int watch_reg_count; /* Number that exist */ |
80 | unsigned int watch_reg_use_cnt; /* Usable by ptrace */ | |
81 | #define NUM_WATCH_REGS 4 | |
82 | u16 watch_reg_masks[NUM_WATCH_REGS]; | |
e77c32fe | 83 | unsigned int kscratch_mask; /* Usable KScratch mask. */ |
4f12b91d MC |
84 | /* |
85 | * Cache Coherency attribute for write-combine memory writes. | |
86 | * (shifted by _CACHE_SHIFT) | |
87 | */ | |
88 | unsigned int writecombine; | |
ed4cbc81 MC |
89 | /* |
90 | * Simple counter to prevent enabling HTW in nested | |
91 | * htw_start/htw_stop calls | |
92 | */ | |
93 | unsigned int htw_seq; | |
1da177e4 LT |
94 | } __attribute__((aligned(SMP_CACHE_BYTES))); |
95 | ||
96 | extern struct cpuinfo_mips cpu_data[]; | |
97 | #define current_cpu_data cpu_data[smp_processor_id()] | |
53dc8028 | 98 | #define raw_current_cpu_data cpu_data[raw_smp_processor_id()] |
c5f66596 | 99 | #define boot_cpu_data cpu_data[0] |
1da177e4 LT |
100 | |
101 | extern void cpu_probe(void); | |
102 | extern void cpu_report(void); | |
103 | ||
9966db25 RB |
104 | extern const char *__cpu_name[]; |
105 | #define cpu_name_string() __cpu_name[smp_processor_id()] | |
106 | ||
d6d3c9af RB |
107 | struct seq_file; |
108 | struct notifier_block; | |
109 | ||
110 | extern int register_proc_cpuinfo_notifier(struct notifier_block *nb); | |
111 | extern int proc_cpuinfo_notifier_call_chain(unsigned long val, void *v); | |
112 | ||
113 | #define proc_cpuinfo_notifier(fn, pri) \ | |
114 | ({ \ | |
115 | static struct notifier_block fn##_nb = { \ | |
116 | .notifier_call = fn, \ | |
117 | .priority = pri \ | |
118 | }; \ | |
119 | \ | |
120 | register_proc_cpuinfo_notifier(&fn##_nb); \ | |
121 | }) | |
122 | ||
123 | struct proc_cpuinfo_notifier_args { | |
124 | struct seq_file *m; | |
125 | unsigned long n; | |
126 | }; | |
127 | ||
b633648c | 128 | #ifdef CONFIG_MIPS_MT_SMP |
b86c2247 PB |
129 | # define cpu_vpe_id(cpuinfo) ((cpuinfo)->vpe_id) |
130 | #else | |
34bd3e6b | 131 | # define cpu_vpe_id(cpuinfo) ({ (void)cpuinfo; 0; }) |
b86c2247 PB |
132 | #endif |
133 | ||
1da177e4 | 134 | #endif /* __ASM_CPU_INFO_H */ |