arch/powerpc/include/asm/firmware.h

root/arch/powerpc/include/asm/firmware.h
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
 *
 *  Modifications for ppc64:
 *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
 */
#ifndef __ASM_POWERPC_FIRMWARE_H
#define __ASM_POWERPC_FIRMWARE_H

#ifdef __KERNEL__

#include <asm/asm-const.h>

/* firmware feature bitmask values */

#define FW_FEATURE_PFT          ASM_CONST(0x0000000000000001)
#define FW_FEATURE_TCE          ASM_CONST(0x0000000000000002)
#define FW_FEATURE_SPRG0        ASM_CONST(0x0000000000000004)
#define FW_FEATURE_DABR         ASM_CONST(0x0000000000000008)
#define FW_FEATURE_COPY         ASM_CONST(0x0000000000000010)
#define FW_FEATURE_ASR          ASM_CONST(0x0000000000000020)
#define FW_FEATURE_DEBUG        ASM_CONST(0x0000000000000040)
#define FW_FEATURE_TERM         ASM_CONST(0x0000000000000080)
#define FW_FEATURE_PERF         ASM_CONST(0x0000000000000100)
#define FW_FEATURE_DUMP         ASM_CONST(0x0000000000000200)
#define FW_FEATURE_INTERRUPT    ASM_CONST(0x0000000000000400)
#define FW_FEATURE_MIGRATE      ASM_CONST(0x0000000000000800)
#define FW_FEATURE_PERFMON      ASM_CONST(0x0000000000001000)
#define FW_FEATURE_CRQ          ASM_CONST(0x0000000000002000)
#define FW_FEATURE_VIO          ASM_CONST(0x0000000000004000)
#define FW_FEATURE_RDMA         ASM_CONST(0x0000000000008000)
#define FW_FEATURE_LLAN         ASM_CONST(0x0000000000010000)
#define FW_FEATURE_BULK_REMOVE  ASM_CONST(0x0000000000020000)
#define FW_FEATURE_XDABR        ASM_CONST(0x0000000000040000)
#define FW_FEATURE_PUT_TCE_IND  ASM_CONST(0x0000000000080000)
#define FW_FEATURE_SPLPAR       ASM_CONST(0x0000000000100000)
#define FW_FEATURE_LPAR         ASM_CONST(0x0000000000400000)
#define FW_FEATURE_PS3_LV1      ASM_CONST(0x0000000000800000)
#define FW_FEATURE_HPT_RESIZE   ASM_CONST(0x0000000001000000)
#define FW_FEATURE_CMO          ASM_CONST(0x0000000002000000)
#define FW_FEATURE_VPHN         ASM_CONST(0x0000000004000000)
#define FW_FEATURE_XCMO         ASM_CONST(0x0000000008000000)
#define FW_FEATURE_OPAL         ASM_CONST(0x0000000010000000)
#define FW_FEATURE_SET_MODE     ASM_CONST(0x0000000040000000)
#define FW_FEATURE_BEST_ENERGY  ASM_CONST(0x0000000080000000)
#define FW_FEATURE_FORM1_AFFINITY ASM_CONST(0x0000000100000000)
#define FW_FEATURE_PRRN         ASM_CONST(0x0000000200000000)
#define FW_FEATURE_DRMEM_V2     ASM_CONST(0x0000000400000000)
#define FW_FEATURE_DRC_INFO     ASM_CONST(0x0000000800000000)
#define FW_FEATURE_BLOCK_REMOVE ASM_CONST(0x0000001000000000)
#define FW_FEATURE_PAPR_SCM     ASM_CONST(0x0000002000000000)
#define FW_FEATURE_ULTRAVISOR   ASM_CONST(0x0000004000000000)
#define FW_FEATURE_STUFF_TCE    ASM_CONST(0x0000008000000000)
#define FW_FEATURE_RPT_INVALIDATE ASM_CONST(0x0000010000000000)
#define FW_FEATURE_FORM2_AFFINITY ASM_CONST(0x0000020000000000)
#define FW_FEATURE_ENERGY_SCALE_INFO ASM_CONST(0x0000040000000000)
#define FW_FEATURE_WATCHDOG     ASM_CONST(0x0000080000000000)
#define FW_FEATURE_PLPKS        ASM_CONST(0x0000100000000000)

#ifndef __ASSEMBLER__

enum {
#ifdef CONFIG_PPC64
        FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
                FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
                FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
                FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
                FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
                FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
                FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |
                FW_FEATURE_PUT_TCE_IND | FW_FEATURE_STUFF_TCE |
                FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
                FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
                FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
                FW_FEATURE_FORM1_AFFINITY | FW_FEATURE_PRRN |
                FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
                FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE |
                FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR |
                FW_FEATURE_RPT_INVALIDATE | FW_FEATURE_FORM2_AFFINITY |
                FW_FEATURE_ENERGY_SCALE_INFO | FW_FEATURE_WATCHDOG |
                FW_FEATURE_PLPKS,
        FW_FEATURE_PSERIES_ALWAYS = 0,
        FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR,
        FW_FEATURE_POWERNV_ALWAYS = 0,
        FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
        FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
        FW_FEATURE_NATIVE_POSSIBLE = 0,
        FW_FEATURE_NATIVE_ALWAYS = 0,
        FW_FEATURE_POSSIBLE =
#ifdef CONFIG_PPC_PSERIES
                FW_FEATURE_PSERIES_POSSIBLE |
#endif
#ifdef CONFIG_PPC_POWERNV
                FW_FEATURE_POWERNV_POSSIBLE |
#endif
#ifdef CONFIG_PPC_PS3
                FW_FEATURE_PS3_POSSIBLE |
#endif
#ifdef CONFIG_PPC_HASH_MMU_NATIVE
                FW_FEATURE_NATIVE_ALWAYS |
#endif
                0,
        FW_FEATURE_ALWAYS =
#ifdef CONFIG_PPC_PSERIES
                FW_FEATURE_PSERIES_ALWAYS &
#endif
#ifdef CONFIG_PPC_POWERNV
                FW_FEATURE_POWERNV_ALWAYS &
#endif
#ifdef CONFIG_PPC_PS3
                FW_FEATURE_PS3_ALWAYS &
#endif
#ifdef CONFIG_PPC_HASH_MMU_NATIVE
                FW_FEATURE_NATIVE_ALWAYS &
#endif
                FW_FEATURE_POSSIBLE,

#else /* CONFIG_PPC64 */
        FW_FEATURE_POSSIBLE = 0,
        FW_FEATURE_ALWAYS = 0,
#endif
};

/* This is used to identify firmware features which are available
 * to the kernel.
 */
extern unsigned long    powerpc_firmware_features;

#define firmware_has_feature(feature)                                   \
        ((FW_FEATURE_ALWAYS & (feature)) ||                             \
                (FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))

extern void system_reset_fwnmi(void);
extern void machine_check_fwnmi(void);

/* This is true if we are using the firmware NMI handler (typically LPAR) */
extern int fwnmi_active;
extern int ibm_nmi_interlock_token;

extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;

#ifdef CONFIG_PPC_PSERIES
void pseries_probe_fw_features(void);
#else
static inline void pseries_probe_fw_features(void) { }
#endif

#endif /* __ASSEMBLER__ */
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_FIRMWARE_H */
Linux
