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firmware.h

/*
 *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
 *
 *  Modifications for ppc64:
 *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version
 *  2 of the License, or (at your option) any later version.
 */
#ifndef __ASM_POWERPC_FIRMWARE_H
#define __ASM_POWERPC_FIRMWARE_H

#ifdef __KERNEL__

#include <asm/asm-compat.h>
#include <asm/feature-fixups.h>

/* firmware feature bitmask values */
#define FIRMWARE_MAX_FEATURES 63

#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       ASM_CONST(0x0000000000020000)
#define FW_FEATURE_XDABR      ASM_CONST(0x0000000000040000)
#define FW_FEATURE_MULTITCE   ASM_CONST(0x0000000000080000)
#define FW_FEATURE_SPLPAR     ASM_CONST(0x0000000000100000)
#define FW_FEATURE_ISERIES    ASM_CONST(0x0000000000200000)
#define FW_FEATURE_LPAR       ASM_CONST(0x0000000000400000)
#define FW_FEATURE_PS3_LV1    ASM_CONST(0x0000000000800000)
#define FW_FEATURE_BEAT       ASM_CONST(0x0000000001000000)
#define FW_FEATURE_BULK_REMOVE      ASM_CONST(0x0000000002000000)
#define FW_FEATURE_CMO        ASM_CONST(0x0000000004000000)

#ifndef __ASSEMBLY__

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 | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
            FW_FEATURE_SPLPAR | FW_FEATURE_LPAR | FW_FEATURE_CMO,
      FW_FEATURE_PSERIES_ALWAYS = 0,
      FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
      FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
      FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
      FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
      FW_FEATURE_CELLEB_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_BEAT,
      FW_FEATURE_CELLEB_ALWAYS = 0,
      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_ISERIES
            FW_FEATURE_ISERIES_POSSIBLE |
#endif
#ifdef CONFIG_PPC_PS3
            FW_FEATURE_PS3_POSSIBLE |
#endif
#ifdef CONFIG_PPC_CELLEB
            FW_FEATURE_CELLEB_POSSIBLE |
#endif
#ifdef CONFIG_PPC_NATIVE
            FW_FEATURE_NATIVE_ALWAYS |
#endif
            0,
      FW_FEATURE_ALWAYS =
#ifdef CONFIG_PPC_PSERIES
            FW_FEATURE_PSERIES_ALWAYS &
#endif
#ifdef CONFIG_PPC_ISERIES
            FW_FEATURE_ISERIES_ALWAYS &
#endif
#ifdef CONFIG_PPC_PS3
            FW_FEATURE_PS3_ALWAYS &
#endif
#ifdef CONFIG_PPC_CELLEB
            FW_FEATURE_CELLEB_ALWAYS &
#endif
#ifdef CONFIG_PPC_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 unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;

#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_FIRMWARE_H */

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