include/asm-powerpc/firmware.h

   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
  46 #ifndef __ASSEMBLY__
  47
  48 enum {
  49 #ifdef CONFIG_PPC64
  50         FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
  51                 FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
  52                 FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
  53                 FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
  54                 FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
  55                 FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
  56                 FW_FEATURE_BULK | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
  57                 FW_FEATURE_SPLPAR | FW_FEATURE_LPAR,
  58         FW_FEATURE_PSERIES_ALWAYS = 0,
  59         FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
  60         FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
  61         FW_FEATURE_POSSIBLE =
  62 #ifdef CONFIG_PPC_PSERIES
  63                 FW_FEATURE_PSERIES_POSSIBLE |
  64 #endif
  65 #ifdef CONFIG_PPC_ISERIES
  66                 FW_FEATURE_ISERIES_POSSIBLE |
  67 #endif
  68                 0,
  69         FW_FEATURE_ALWAYS =
  70 #ifdef CONFIG_PPC_PSERIES
  71                 FW_FEATURE_PSERIES_ALWAYS &
  72 #endif
  73 #ifdef CONFIG_PPC_ISERIES
  74                 FW_FEATURE_ISERIES_ALWAYS &
  75 #endif
  76                 FW_FEATURE_POSSIBLE,
  77
  78 #else /* CONFIG_PPC64 */
  79         FW_FEATURE_POSSIBLE = 0,
  80         FW_FEATURE_ALWAYS = 0,
  81 #endif
  82 };
  83
  84 /* This is used to identify firmware features which are available
  85  * to the kernel.
  86  */
  87 extern unsigned long    powerpc_firmware_features;
  88
  89 #define firmware_has_feature(feature)                                   \
  90         ((FW_FEATURE_ALWAYS & (feature)) ||                             \
  91                 (FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))
  92
  93 extern void system_reset_fwnmi(void);
  94 extern void machine_check_fwnmi(void);
  95
  96 /* This is true if we are using the firmware NMI handler (typically LPAR) */
  97 extern int fwnmi_active;
  98
  99 #else /* __ASSEMBLY__ */
 100
 101 #define BEGIN_FW_FTR_SECTION            96:
 102
 103 #define END_FW_FTR_SECTION(msk, val)            \
 104 97:                                             \
 105         .section __fw_ftr_fixup,"a";            \
 106         .align 3;                               \
 107         .llong msk;                             \
 108         .llong val;                             \
 109         .llong 96b;                             \
 110         .llong 97b;                             \
 111         .previous
 112
 113 #define END_FW_FTR_SECTION_IFSET(msk)   END_FW_FTR_SECTION((msk), (msk))
 114 #define END_FW_FTR_SECTION_IFCLR(msk)   END_FW_FTR_SECTION((msk), 0)
 115
 116 #endif /* __ASSEMBLY__ */
 117 #endif /* __KERNEL__ */
 118 #endif /* __ASM_POWERPC_FIRMWARE_H */