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Linux kernel mirror (for testing)
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linux
1/*
2 * include/asm-ppc64/cputable.h
3 *
4 * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
5 *
6 * Modifications for ppc64:
7 * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15#ifndef __ASM_PPC_CPUTABLE_H
16#define __ASM_PPC_CPUTABLE_H
17
18#include <linux/config.h>
19#include <asm/page.h> /* for ASM_CONST */
20
21/* Exposed to userland CPU features - Must match ppc32 definitions */
22#define PPC_FEATURE_32 0x80000000
23#define PPC_FEATURE_64 0x40000000
24#define PPC_FEATURE_601_INSTR 0x20000000
25#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
26#define PPC_FEATURE_HAS_FPU 0x08000000
27#define PPC_FEATURE_HAS_MMU 0x04000000
28#define PPC_FEATURE_HAS_4xxMAC 0x02000000
29#define PPC_FEATURE_UNIFIED_CACHE 0x01000000
30
31#ifdef __KERNEL__
32
33#ifndef __ASSEMBLY__
34
35/* This structure can grow, it's real size is used by head.S code
36 * via the mkdefs mechanism.
37 */
38struct cpu_spec;
39
40typedef void (*cpu_setup_t)(unsigned long offset, struct cpu_spec* spec);
41
42struct cpu_spec {
43 /* CPU is matched via (PVR & pvr_mask) == pvr_value */
44 unsigned int pvr_mask;
45 unsigned int pvr_value;
46
47 char *cpu_name;
48 unsigned long cpu_features; /* Kernel features */
49 unsigned int cpu_user_features; /* Userland features */
50
51 /* cache line sizes */
52 unsigned int icache_bsize;
53 unsigned int dcache_bsize;
54
55 /* this is called to initialize various CPU bits like L1 cache,
56 * BHT, SPD, etc... from head.S before branching to identify_machine
57 */
58 cpu_setup_t cpu_setup;
59
60 /* This is used to identify firmware features which are available
61 * to the kernel.
62 */
63 unsigned long firmware_features;
64};
65
66extern struct cpu_spec cpu_specs[];
67extern struct cpu_spec *cur_cpu_spec;
68
69static inline unsigned long cpu_has_feature(unsigned long feature)
70{
71 return cur_cpu_spec->cpu_features & feature;
72}
73
74
75/* firmware feature bitmask values */
76#define FIRMWARE_MAX_FEATURES 63
77
78#define FW_FEATURE_PFT (1UL<<0)
79#define FW_FEATURE_TCE (1UL<<1)
80#define FW_FEATURE_SPRG0 (1UL<<2)
81#define FW_FEATURE_DABR (1UL<<3)
82#define FW_FEATURE_COPY (1UL<<4)
83#define FW_FEATURE_ASR (1UL<<5)
84#define FW_FEATURE_DEBUG (1UL<<6)
85#define FW_FEATURE_TERM (1UL<<7)
86#define FW_FEATURE_PERF (1UL<<8)
87#define FW_FEATURE_DUMP (1UL<<9)
88#define FW_FEATURE_INTERRUPT (1UL<<10)
89#define FW_FEATURE_MIGRATE (1UL<<11)
90#define FW_FEATURE_PERFMON (1UL<<12)
91#define FW_FEATURE_CRQ (1UL<<13)
92#define FW_FEATURE_VIO (1UL<<14)
93#define FW_FEATURE_RDMA (1UL<<15)
94#define FW_FEATURE_LLAN (1UL<<16)
95#define FW_FEATURE_BULK (1UL<<17)
96#define FW_FEATURE_XDABR (1UL<<18)
97#define FW_FEATURE_MULTITCE (1UL<<19)
98#define FW_FEATURE_SPLPAR (1UL<<20)
99
100typedef struct {
101 unsigned long val;
102 char * name;
103} firmware_feature_t;
104
105extern firmware_feature_t firmware_features_table[];
106
107#endif /* __ASSEMBLY__ */
108
109/* CPU kernel features */
110
111/* Retain the 32b definitions for the time being - use bottom half of word */
112#define CPU_FTR_SPLIT_ID_CACHE ASM_CONST(0x0000000000000001)
113#define CPU_FTR_L2CR ASM_CONST(0x0000000000000002)
114#define CPU_FTR_SPEC7450 ASM_CONST(0x0000000000000004)
115#define CPU_FTR_ALTIVEC ASM_CONST(0x0000000000000008)
116#define CPU_FTR_TAU ASM_CONST(0x0000000000000010)
117#define CPU_FTR_CAN_DOZE ASM_CONST(0x0000000000000020)
118#define CPU_FTR_USE_TB ASM_CONST(0x0000000000000040)
119#define CPU_FTR_604_PERF_MON ASM_CONST(0x0000000000000080)
120#define CPU_FTR_601 ASM_CONST(0x0000000000000100)
121#define CPU_FTR_HPTE_TABLE ASM_CONST(0x0000000000000200)
122#define CPU_FTR_CAN_NAP ASM_CONST(0x0000000000000400)
123#define CPU_FTR_L3CR ASM_CONST(0x0000000000000800)
124#define CPU_FTR_L3_DISABLE_NAP ASM_CONST(0x0000000000001000)
125#define CPU_FTR_NAP_DISABLE_L2_PR ASM_CONST(0x0000000000002000)
126#define CPU_FTR_DUAL_PLL_750FX ASM_CONST(0x0000000000004000)
127
128/* Add the 64b processor unique features in the top half of the word */
129#define CPU_FTR_SLB ASM_CONST(0x0000000100000000)
130#define CPU_FTR_16M_PAGE ASM_CONST(0x0000000200000000)
131#define CPU_FTR_TLBIEL ASM_CONST(0x0000000400000000)
132#define CPU_FTR_NOEXECUTE ASM_CONST(0x0000000800000000)
133#define CPU_FTR_NODSISRALIGN ASM_CONST(0x0000001000000000)
134#define CPU_FTR_IABR ASM_CONST(0x0000002000000000)
135#define CPU_FTR_MMCRA ASM_CONST(0x0000004000000000)
136#define CPU_FTR_PMC8 ASM_CONST(0x0000008000000000)
137#define CPU_FTR_SMT ASM_CONST(0x0000010000000000)
138#define CPU_FTR_COHERENT_ICACHE ASM_CONST(0x0000020000000000)
139#define CPU_FTR_LOCKLESS_TLBIE ASM_CONST(0x0000040000000000)
140#define CPU_FTR_MMCRA_SIHV ASM_CONST(0x0000080000000000)
141
142/* Platform firmware features */
143#define FW_FTR_ ASM_CONST(0x0000000000000001)
144
145#ifndef __ASSEMBLY__
146#define COMMON_USER_PPC64 (PPC_FEATURE_32 | PPC_FEATURE_64 | \
147 PPC_FEATURE_HAS_FPU | PPC_FEATURE_HAS_MMU)
148
149#define CPU_FTR_PPCAS_ARCH_V2_BASE (CPU_FTR_SLB | \
150 CPU_FTR_TLBIEL | CPU_FTR_NOEXECUTE | \
151 CPU_FTR_NODSISRALIGN)
152
153/* iSeries doesn't support large pages */
154#ifdef CONFIG_PPC_ISERIES
155#define CPU_FTR_PPCAS_ARCH_V2 (CPU_FTR_PPCAS_ARCH_V2_BASE)
156#else
157#define CPU_FTR_PPCAS_ARCH_V2 (CPU_FTR_PPCAS_ARCH_V2_BASE | CPU_FTR_16M_PAGE)
158#endif
159
160#define COMMON_PPC64_FW (0)
161#endif
162
163#ifdef __ASSEMBLY__
164
165#define BEGIN_FTR_SECTION 98:
166
167#define END_FTR_SECTION(msk, val) \
16899: \
169 .section __ftr_fixup,"a"; \
170 .align 3; \
171 .llong msk; \
172 .llong val; \
173 .llong 98b; \
174 .llong 99b; \
175 .previous
176
177#else
178
179#define BEGIN_FTR_SECTION "98:\n"
180#define END_FTR_SECTION(msk, val) \
181"99:\n" \
182" .section __ftr_fixup,\"a\";\n" \
183" .align 3;\n" \
184" .llong "#msk";\n" \
185" .llong "#val";\n" \
186" .llong 98b;\n" \
187" .llong 99b;\n" \
188" .previous\n"
189
190#endif /* __ASSEMBLY__ */
191
192#define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk))
193#define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0)
194
195#endif /* __ASM_PPC_CPUTABLE_H */
196#endif /* __KERNEL__ */
197