include/asm/firmware.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
0004  *
0005  *  Modifications for ppc64:
0006  *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
0007  */
0008 #ifndef __ASM_POWERPC_FIRMWARE_H
0009 #define __ASM_POWERPC_FIRMWARE_H
0010
0011 #ifdef __KERNEL__
0012
0013 #include <asm/asm-const.h>
0014
0015 /* firmware feature bitmask values */
0016
0017 #define FW_FEATURE_PFT      ASM_CONST(0x0000000000000001)
0018 #define FW_FEATURE_TCE      ASM_CONST(0x0000000000000002)
0019 #define FW_FEATURE_SPRG0    ASM_CONST(0x0000000000000004)
0020 #define FW_FEATURE_DABR     ASM_CONST(0x0000000000000008)
0021 #define FW_FEATURE_COPY     ASM_CONST(0x0000000000000010)
0022 #define FW_FEATURE_ASR      ASM_CONST(0x0000000000000020)
0023 #define FW_FEATURE_DEBUG    ASM_CONST(0x0000000000000040)
0024 #define FW_FEATURE_TERM     ASM_CONST(0x0000000000000080)
0025 #define FW_FEATURE_PERF     ASM_CONST(0x0000000000000100)
0026 #define FW_FEATURE_DUMP     ASM_CONST(0x0000000000000200)
0027 #define FW_FEATURE_INTERRUPT    ASM_CONST(0x0000000000000400)
0028 #define FW_FEATURE_MIGRATE  ASM_CONST(0x0000000000000800)
0029 #define FW_FEATURE_PERFMON  ASM_CONST(0x0000000000001000)
0030 #define FW_FEATURE_CRQ      ASM_CONST(0x0000000000002000)
0031 #define FW_FEATURE_VIO      ASM_CONST(0x0000000000004000)
0032 #define FW_FEATURE_RDMA     ASM_CONST(0x0000000000008000)
0033 #define FW_FEATURE_LLAN     ASM_CONST(0x0000000000010000)
0034 #define FW_FEATURE_BULK_REMOVE  ASM_CONST(0x0000000000020000)
0035 #define FW_FEATURE_XDABR    ASM_CONST(0x0000000000040000)
0036 #define FW_FEATURE_PUT_TCE_IND  ASM_CONST(0x0000000000080000)
0037 #define FW_FEATURE_SPLPAR   ASM_CONST(0x0000000000100000)
0038 #define FW_FEATURE_LPAR     ASM_CONST(0x0000000000400000)
0039 #define FW_FEATURE_PS3_LV1  ASM_CONST(0x0000000000800000)
0040 #define FW_FEATURE_HPT_RESIZE   ASM_CONST(0x0000000001000000)
0041 #define FW_FEATURE_CMO      ASM_CONST(0x0000000002000000)
0042 #define FW_FEATURE_VPHN     ASM_CONST(0x0000000004000000)
0043 #define FW_FEATURE_XCMO     ASM_CONST(0x0000000008000000)
0044 #define FW_FEATURE_OPAL     ASM_CONST(0x0000000010000000)
0045 #define FW_FEATURE_SET_MODE ASM_CONST(0x0000000040000000)
0046 #define FW_FEATURE_BEST_ENERGY  ASM_CONST(0x0000000080000000)
0047 #define FW_FEATURE_FORM1_AFFINITY ASM_CONST(0x0000000100000000)
0048 #define FW_FEATURE_PRRN     ASM_CONST(0x0000000200000000)
0049 #define FW_FEATURE_DRMEM_V2 ASM_CONST(0x0000000400000000)
0050 #define FW_FEATURE_DRC_INFO ASM_CONST(0x0000000800000000)
0051 #define FW_FEATURE_BLOCK_REMOVE ASM_CONST(0x0000001000000000)
0052 #define FW_FEATURE_PAPR_SCM     ASM_CONST(0x0000002000000000)
0053 #define FW_FEATURE_ULTRAVISOR   ASM_CONST(0x0000004000000000)
0054 #define FW_FEATURE_STUFF_TCE    ASM_CONST(0x0000008000000000)
0055 #define FW_FEATURE_RPT_INVALIDATE ASM_CONST(0x0000010000000000)
0056 #define FW_FEATURE_FORM2_AFFINITY ASM_CONST(0x0000020000000000)
0057 #define FW_FEATURE_ENERGY_SCALE_INFO ASM_CONST(0x0000040000000000)
0058 #define FW_FEATURE_WATCHDOG ASM_CONST(0x0000080000000000)
0059
0060 #ifndef __ASSEMBLY__
0061
0062 enum {
0063 #ifdef CONFIG_PPC64
0064     FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
0065         FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
0066         FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
0067         FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
0068         FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
0069         FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
0070         FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |
0071         FW_FEATURE_PUT_TCE_IND | FW_FEATURE_STUFF_TCE |
0072         FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
0073         FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
0074         FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
0075         FW_FEATURE_FORM1_AFFINITY | FW_FEATURE_PRRN |
0076         FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
0077         FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE |
0078         FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR |
0079         FW_FEATURE_RPT_INVALIDATE | FW_FEATURE_FORM2_AFFINITY |
0080         FW_FEATURE_ENERGY_SCALE_INFO | FW_FEATURE_WATCHDOG,
0081     FW_FEATURE_PSERIES_ALWAYS = 0,
0082     FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR,
0083     FW_FEATURE_POWERNV_ALWAYS = 0,
0084     FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
0085     FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
0086     FW_FEATURE_NATIVE_POSSIBLE = 0,
0087     FW_FEATURE_NATIVE_ALWAYS = 0,
0088     FW_FEATURE_POSSIBLE =
0089 #ifdef CONFIG_PPC_PSERIES
0090         FW_FEATURE_PSERIES_POSSIBLE |
0091 #endif
0092 #ifdef CONFIG_PPC_POWERNV
0093         FW_FEATURE_POWERNV_POSSIBLE |
0094 #endif
0095 #ifdef CONFIG_PPC_PS3
0096         FW_FEATURE_PS3_POSSIBLE |
0097 #endif
0098 #ifdef CONFIG_PPC_HASH_MMU_NATIVE
0099         FW_FEATURE_NATIVE_ALWAYS |
0100 #endif
0101         0,
0102     FW_FEATURE_ALWAYS =
0103 #ifdef CONFIG_PPC_PSERIES
0104         FW_FEATURE_PSERIES_ALWAYS &
0105 #endif
0106 #ifdef CONFIG_PPC_POWERNV
0107         FW_FEATURE_POWERNV_ALWAYS &
0108 #endif
0109 #ifdef CONFIG_PPC_PS3
0110         FW_FEATURE_PS3_ALWAYS &
0111 #endif
0112 #ifdef CONFIG_PPC_HASH_MMU_NATIVE
0113         FW_FEATURE_NATIVE_ALWAYS &
0114 #endif
0115         FW_FEATURE_POSSIBLE,
0116
0117 #else /* CONFIG_PPC64 */
0118     FW_FEATURE_POSSIBLE = 0,
0119     FW_FEATURE_ALWAYS = 0,
0120 #endif
0121 };
0122
0123 /* This is used to identify firmware features which are available
0124  * to the kernel.
0125  */
0126 extern unsigned long    powerpc_firmware_features;
0127
0128 #define firmware_has_feature(feature)                   \
0129     ((FW_FEATURE_ALWAYS & (feature)) ||             \
0130         (FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))
0131
0132 extern void system_reset_fwnmi(void);
0133 extern void machine_check_fwnmi(void);
0134
0135 /* This is true if we are using the firmware NMI handler (typically LPAR) */
0136 extern int fwnmi_active;
0137 extern int ibm_nmi_interlock_token;
0138
0139 extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
0140
0141 #ifdef CONFIG_PPC_PSERIES
0142 void pseries_probe_fw_features(void);
0143 #else
0144 static inline void pseries_probe_fw_features(void) { }
0145 #endif
0146
0147 #endif /* __ASSEMBLY__ */
0148 #endif /* __KERNEL__ */
0149 #endif /* __ASM_POWERPC_FIRMWARE_H */