/arch/powerpc/include/asm/firmware.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
  4 *
  5 *  Modifications for ppc64:
  6 *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
  7 */
  8#ifndef __ASM_POWERPC_FIRMWARE_H
  9#define __ASM_POWERPC_FIRMWARE_H
 10
 11#ifdef __KERNEL__
 12
 13#include <asm/asm-const.h>
 14
 15/* firmware feature bitmask values */
 16
 17#define FW_FEATURE_PFT		ASM_CONST(0x0000000000000001)
 18#define FW_FEATURE_TCE		ASM_CONST(0x0000000000000002)
 19#define FW_FEATURE_SPRG0	ASM_CONST(0x0000000000000004)
 20#define FW_FEATURE_DABR		ASM_CONST(0x0000000000000008)
 21#define FW_FEATURE_COPY		ASM_CONST(0x0000000000000010)
 22#define FW_FEATURE_ASR		ASM_CONST(0x0000000000000020)
 23#define FW_FEATURE_DEBUG	ASM_CONST(0x0000000000000040)
 24#define FW_FEATURE_TERM		ASM_CONST(0x0000000000000080)
 25#define FW_FEATURE_PERF		ASM_CONST(0x0000000000000100)
 26#define FW_FEATURE_DUMP		ASM_CONST(0x0000000000000200)
 27#define FW_FEATURE_INTERRUPT	ASM_CONST(0x0000000000000400)
 28#define FW_FEATURE_MIGRATE	ASM_CONST(0x0000000000000800)
 29#define FW_FEATURE_PERFMON	ASM_CONST(0x0000000000001000)
 30#define FW_FEATURE_CRQ		ASM_CONST(0x0000000000002000)
 31#define FW_FEATURE_VIO		ASM_CONST(0x0000000000004000)
 32#define FW_FEATURE_RDMA		ASM_CONST(0x0000000000008000)
 33#define FW_FEATURE_LLAN		ASM_CONST(0x0000000000010000)
 34#define FW_FEATURE_BULK_REMOVE	ASM_CONST(0x0000000000020000)
 35#define FW_FEATURE_XDABR	ASM_CONST(0x0000000000040000)
 36#define FW_FEATURE_PUT_TCE_IND	ASM_CONST(0x0000000000080000)
 37#define FW_FEATURE_SPLPAR	ASM_CONST(0x0000000000100000)
 38#define FW_FEATURE_LPAR		ASM_CONST(0x0000000000400000)
 39#define FW_FEATURE_PS3_LV1	ASM_CONST(0x0000000000800000)
 40#define FW_FEATURE_HPT_RESIZE	ASM_CONST(0x0000000001000000)
 41#define FW_FEATURE_CMO		ASM_CONST(0x0000000002000000)
 42#define FW_FEATURE_VPHN		ASM_CONST(0x0000000004000000)
 43#define FW_FEATURE_XCMO		ASM_CONST(0x0000000008000000)
 44#define FW_FEATURE_OPAL		ASM_CONST(0x0000000010000000)
 45#define FW_FEATURE_SET_MODE	ASM_CONST(0x0000000040000000)
 46#define FW_FEATURE_BEST_ENERGY	ASM_CONST(0x0000000080000000)
 47#define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
 48#define FW_FEATURE_PRRN		ASM_CONST(0x0000000200000000)
 49#define FW_FEATURE_DRMEM_V2	ASM_CONST(0x0000000400000000)
 50#define FW_FEATURE_DRC_INFO	ASM_CONST(0x0000000800000000)
 51#define FW_FEATURE_BLOCK_REMOVE ASM_CONST(0x0000001000000000)
 52#define FW_FEATURE_PAPR_SCM 	ASM_CONST(0x0000002000000000)
 53#define FW_FEATURE_ULTRAVISOR	ASM_CONST(0x0000004000000000)
 54#define FW_FEATURE_STUFF_TCE	ASM_CONST(0x0000008000000000)
 55
 56#ifndef __ASSEMBLY__
 57
 58enum {
 59#ifdef CONFIG_PPC64
 60	FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
 61		FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
 62		FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
 63		FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
 64		FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
 65		FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
 66		FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |
 67		FW_FEATURE_PUT_TCE_IND | FW_FEATURE_STUFF_TCE |
 68		FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
 69		FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
 70		FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
 71		FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
 72		FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
 73		FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE |
 74		FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR,
 75	FW_FEATURE_PSERIES_ALWAYS = 0,
 76	FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR,
 77	FW_FEATURE_POWERNV_ALWAYS = 0,
 78	FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
 79	FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
 80	FW_FEATURE_NATIVE_POSSIBLE = 0,
 81	FW_FEATURE_NATIVE_ALWAYS = 0,
 82	FW_FEATURE_POSSIBLE =
 83#ifdef CONFIG_PPC_PSERIES
 84		FW_FEATURE_PSERIES_POSSIBLE |
 85#endif
 86#ifdef CONFIG_PPC_POWERNV
 87		FW_FEATURE_POWERNV_POSSIBLE |
 88#endif
 89#ifdef CONFIG_PPC_PS3
 90		FW_FEATURE_PS3_POSSIBLE |
 91#endif
 92#ifdef CONFIG_PPC_NATIVE
 93		FW_FEATURE_NATIVE_ALWAYS |
 94#endif
 95		0,
 96	FW_FEATURE_ALWAYS =
 97#ifdef CONFIG_PPC_PSERIES
 98		FW_FEATURE_PSERIES_ALWAYS &
 99#endif
100#ifdef CONFIG_PPC_POWERNV
101		FW_FEATURE_POWERNV_ALWAYS &
102#endif
103#ifdef CONFIG_PPC_PS3
104		FW_FEATURE_PS3_ALWAYS &
105#endif
106#ifdef CONFIG_PPC_NATIVE
107		FW_FEATURE_NATIVE_ALWAYS &
108#endif
109		FW_FEATURE_POSSIBLE,
110
111#else /* CONFIG_PPC64 */
112	FW_FEATURE_POSSIBLE = 0,
113	FW_FEATURE_ALWAYS = 0,
114#endif
115};
116
117/* This is used to identify firmware features which are available
118 * to the kernel.
119 */
120extern unsigned long	powerpc_firmware_features;
121
122#define firmware_has_feature(feature)					\
123	((FW_FEATURE_ALWAYS & (feature)) ||				\
124		(FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))
125
126extern void system_reset_fwnmi(void);
127extern void machine_check_fwnmi(void);
128
129/* This is true if we are using the firmware NMI handler (typically LPAR) */
130extern int fwnmi_active;
131
132extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
133
134#ifdef CONFIG_PPC_PSERIES
135void pseries_probe_fw_features(void);
136#else
137static inline void pseries_probe_fw_features(void) { };
138#endif
139
140#endif /* __ASSEMBLY__ */
141#endif /* __KERNEL__ */
142#endif /* __ASM_POWERPC_FIRMWARE_H */