1/*
2 *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
3 *
4 *  Modifications for ppc64:
5 *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
6 *
7 *  This program is free software; you can redistribute it and/or
8 *  modify it under the terms of the GNU General Public License
9 *  as published by the Free Software Foundation; either version
10 *  2 of the License, or (at your option) any later version.
11 */
12#ifndef __ASM_POWERPC_FIRMWARE_H
13#define __ASM_POWERPC_FIRMWARE_H
14
15#ifdef __KERNEL__
16
17#include <asm/asm-compat.h>
18
19/* firmware feature bitmask values */
20#define FIRMWARE_MAX_FEATURES 63
21
22#define FW_FEATURE_PFT		ASM_CONST(0x0000000000000001)
23#define FW_FEATURE_TCE		ASM_CONST(0x0000000000000002)
24#define FW_FEATURE_SPRG0	ASM_CONST(0x0000000000000004)
25#define FW_FEATURE_DABR		ASM_CONST(0x0000000000000008)
26#define FW_FEATURE_COPY		ASM_CONST(0x0000000000000010)
27#define FW_FEATURE_ASR		ASM_CONST(0x0000000000000020)
28#define FW_FEATURE_DEBUG	ASM_CONST(0x0000000000000040)
29#define FW_FEATURE_TERM		ASM_CONST(0x0000000000000080)
30#define FW_FEATURE_PERF		ASM_CONST(0x0000000000000100)
31#define FW_FEATURE_DUMP		ASM_CONST(0x0000000000000200)
32#define FW_FEATURE_INTERRUPT	ASM_CONST(0x0000000000000400)
33#define FW_FEATURE_MIGRATE	ASM_CONST(0x0000000000000800)
34#define FW_FEATURE_PERFMON	ASM_CONST(0x0000000000001000)
35#define FW_FEATURE_CRQ		ASM_CONST(0x0000000000002000)
36#define FW_FEATURE_VIO		ASM_CONST(0x0000000000004000)
37#define FW_FEATURE_RDMA		ASM_CONST(0x0000000000008000)
38#define FW_FEATURE_LLAN		ASM_CONST(0x0000000000010000)
39#define FW_FEATURE_BULK		ASM_CONST(0x0000000000020000)
40#define FW_FEATURE_XDABR	ASM_CONST(0x0000000000040000)
41#define FW_FEATURE_MULTITCE	ASM_CONST(0x0000000000080000)
42#define FW_FEATURE_SPLPAR	ASM_CONST(0x0000000000100000)
43#define FW_FEATURE_ISERIES	ASM_CONST(0x0000000000200000)
44#define FW_FEATURE_LPAR		ASM_CONST(0x0000000000400000)
45#define FW_FEATURE_PS3_LV1	ASM_CONST(0x0000000000800000)
46#define FW_FEATURE_BEAT		ASM_CONST(0x0000000001000000)
47#define FW_FEATURE_BULK_REMOVE	ASM_CONST(0x0000000002000000)
48
49#ifndef __ASSEMBLY__
50
51enum {
52#ifdef CONFIG_PPC64
53	FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
54		FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
55		FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
56		FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
57		FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
58		FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
59		FW_FEATURE_BULK | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
60		FW_FEATURE_SPLPAR | FW_FEATURE_LPAR,
61	FW_FEATURE_PSERIES_ALWAYS = 0,
62	FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
63	FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
64	FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
65	FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
66	FW_FEATURE_CELLEB_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_BEAT,
67	FW_FEATURE_CELLEB_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_BEAT,
68	FW_FEATURE_NATIVE_POSSIBLE = 0,
69	FW_FEATURE_NATIVE_ALWAYS = 0,
70	FW_FEATURE_POSSIBLE =
71#ifdef CONFIG_PPC_PSERIES
72		FW_FEATURE_PSERIES_POSSIBLE |
73#endif
74#ifdef CONFIG_PPC_ISERIES
75		FW_FEATURE_ISERIES_POSSIBLE |
76#endif
77#ifdef CONFIG_PPC_PS3
78		FW_FEATURE_PS3_POSSIBLE |
79#endif
80#ifdef CONFIG_PPC_CELLEB
81		FW_FEATURE_CELLEB_POSSIBLE |
82#endif
83#ifdef CONFIG_PPC_NATIVE
84		FW_FEATURE_NATIVE_ALWAYS |
85#endif
86		0,
87	FW_FEATURE_ALWAYS =
88#ifdef CONFIG_PPC_PSERIES
89		FW_FEATURE_PSERIES_ALWAYS &
90#endif
91#ifdef CONFIG_PPC_ISERIES
92		FW_FEATURE_ISERIES_ALWAYS &
93#endif
94#ifdef CONFIG_PPC_PS3
95		FW_FEATURE_PS3_ALWAYS &
96#endif
97#ifdef CONFIG_PPC_CELLEB
98		FW_FEATURE_CELLEB_ALWAYS &
99#endif
100#ifdef CONFIG_PPC_NATIVE
101		FW_FEATURE_NATIVE_ALWAYS &
102#endif
103		FW_FEATURE_POSSIBLE,
104
105#else /* CONFIG_PPC64 */
106	FW_FEATURE_POSSIBLE = 0,
107	FW_FEATURE_ALWAYS = 0,
108#endif
109};
110
111/* This is used to identify firmware features which are available
112 * to the kernel.
113 */
114extern unsigned long	powerpc_firmware_features;
115
116#define firmware_has_feature(feature)					\
117	((FW_FEATURE_ALWAYS & (feature)) ||				\
118		(FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))
119
120extern void system_reset_fwnmi(void);
121extern void machine_check_fwnmi(void);
122
123/* This is true if we are using the firmware NMI handler (typically LPAR) */
124extern int fwnmi_active;
125
126extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
127
128#else /* __ASSEMBLY__ */
129
130#define BEGIN_FW_FTR_SECTION_NESTED(label)	label:
131#define BEGIN_FW_FTR_SECTION			BEGIN_FW_FTR_SECTION_NESTED(97)
132#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
133	MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
134#define END_FW_FTR_SECTION(msk, val)		\
135	END_FW_FTR_SECTION_NESTED(msk, val, 97)
136
137#define END_FW_FTR_SECTION_IFSET(msk)	END_FW_FTR_SECTION((msk), (msk))
138#define END_FW_FTR_SECTION_IFCLR(msk)	END_FW_FTR_SECTION((msk), 0)
139
140#endif /* __ASSEMBLY__ */
141#endif /* __KERNEL__ */
142#endif /* __ASM_POWERPC_FIRMWARE_H */
143