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 #ifndef __ASSEMBLY__
  18
  19 /* firmware feature bitmask values */
  20 #define FIRMWARE_MAX_FEATURES 63
  21
  22 #define FW_FEATURE_PFT          (1UL<<0)
  23 #define FW_FEATURE_TCE          (1UL<<1)
  24 #define FW_FEATURE_SPRG0        (1UL<<2)
  25 #define FW_FEATURE_DABR         (1UL<<3)
  26 #define FW_FEATURE_COPY         (1UL<<4)
  27 #define FW_FEATURE_ASR          (1UL<<5)
  28 #define FW_FEATURE_DEBUG        (1UL<<6)
  29 #define FW_FEATURE_TERM         (1UL<<7)
  30 #define FW_FEATURE_PERF         (1UL<<8)
  31 #define FW_FEATURE_DUMP         (1UL<<9)
  32 #define FW_FEATURE_INTERRUPT    (1UL<<10)
  33 #define FW_FEATURE_MIGRATE      (1UL<<11)
  34 #define FW_FEATURE_PERFMON      (1UL<<12)
  35 #define FW_FEATURE_CRQ          (1UL<<13)
  36 #define FW_FEATURE_VIO          (1UL<<14)
  37 #define FW_FEATURE_RDMA         (1UL<<15)
  38 #define FW_FEATURE_LLAN         (1UL<<16)
  39 #define FW_FEATURE_BULK         (1UL<<17)
  40 #define FW_FEATURE_XDABR        (1UL<<18)
  41 #define FW_FEATURE_MULTITCE     (1UL<<19)
  42 #define FW_FEATURE_SPLPAR       (1UL<<20)
  43 #define FW_FEATURE_ISERIES      (1UL<<21)
  44
  45 enum {
  46 #ifdef CONFIG_PPC64
  47         FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
  48                 FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
  49                 FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
  50                 FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
  51                 FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
  52                 FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
  53                 FW_FEATURE_BULK | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
  54                 FW_FEATURE_SPLPAR,
  55         FW_FEATURE_PSERIES_ALWAYS = 0,
  56         FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES,
  57         FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES,
  58         FW_FEATURE_POSSIBLE =
  59 #ifdef CONFIG_PPC_PSERIES
  60                 FW_FEATURE_PSERIES_POSSIBLE |
  61 #endif
  62 #ifdef CONFIG_PPC_ISERIES
  63                 FW_FEATURE_ISERIES_POSSIBLE |
  64 #endif
  65                 0,
  66         FW_FEATURE_ALWAYS =
  67 #ifdef CONFIG_PPC_PSERIES
  68                 FW_FEATURE_PSERIES_ALWAYS &
  69 #endif
  70 #ifdef CONFIG_PPC_ISERIES
  71                 FW_FEATURE_ISERIES_ALWAYS &
  72 #endif
  73                 FW_FEATURE_POSSIBLE,
  74
  75 #else /* CONFIG_PPC64 */
  76         FW_FEATURE_POSSIBLE = 0,
  77         FW_FEATURE_ALWAYS = 0,
  78 #endif
  79 };
  80
  81 /* This is used to identify firmware features which are available
  82  * to the kernel.
  83  */
  84 extern unsigned long    ppc64_firmware_features;
  85
  86 static inline unsigned long firmware_has_feature(unsigned long feature)
  87 {
  88         return (FW_FEATURE_ALWAYS & feature) ||
  89                 (FW_FEATURE_POSSIBLE & ppc64_firmware_features & feature);
  90 }
  91
  92 #ifdef CONFIG_PPC_PSERIES
  93 typedef struct {
  94     unsigned long val;
  95     char * name;
  96 } firmware_feature_t;
  97
  98 extern firmware_feature_t firmware_features_table[];
  99 #endif
 100
 101 extern void system_reset_fwnmi(void);
 102 extern void machine_check_fwnmi(void);
 103
 104 /* This is true if we are using the firmware NMI handler (typically LPAR) */
 105 extern int fwnmi_active;
 106
 107 #endif /* __ASSEMBLY__ */
 108 #endif /* __KERNEL__ */
 109 #endif /* __ASM_POWERPC_FIRMWARE_H */