arch/alpha/kernel/machvec_impl.h

   1 /*
   2  *      linux/arch/alpha/kernel/machvec.h
   3  *
   4  *      Copyright (C) 1997, 1998  Richard Henderson
   5  *
   6  * This file has goodies to help simplify instantiation of machine vectors.
   7  */
   8
   9 #include <linux/config.h>
  10 #include <asm/pgalloc.h>
  11
  12 /* Whee.  These systems don't have an HAE:
  13        IRONGATE, MARVEL, POLARIS, TSUNAMI, TITAN, WILDFIRE
  14    Fix things up for the GENERIC kernel by defining the HAE address
  15    to be that of the cache. Now we can read and write it as we like.  ;-)  */
  16 #define IRONGATE_HAE_ADDRESS    (&alpha_mv.hae_cache)
  17 #define MARVEL_HAE_ADDRESS      (&alpha_mv.hae_cache)
  18 #define POLARIS_HAE_ADDRESS     (&alpha_mv.hae_cache)
  19 #define TSUNAMI_HAE_ADDRESS     (&alpha_mv.hae_cache)
  20 #define TITAN_HAE_ADDRESS       (&alpha_mv.hae_cache)
  21 #define WILDFIRE_HAE_ADDRESS    (&alpha_mv.hae_cache)
  22
  23 #ifdef CIA_ONE_HAE_WINDOW
  24 #define CIA_HAE_ADDRESS         (&alpha_mv.hae_cache)
  25 #endif
  26 #ifdef MCPCIA_ONE_HAE_WINDOW
  27 #define MCPCIA_HAE_ADDRESS      (&alpha_mv.hae_cache)
  28 #endif
  29
  30 /* Only a few systems don't define IACK_SC, handling all interrupts through
  31    the SRM console.  But splitting out that one case from IO() below
  32    seems like such a pain.  Define this to get things to compile.  */
  33 #define JENSEN_IACK_SC          1
  34 #define T2_IACK_SC              1
  35 #define WILDFIRE_IACK_SC        1 /* FIXME */
  36
  37 /*
  38  * Some helpful macros for filling in the blanks.
  39  */
  40
  41 #define CAT1(x,y)  x##y
  42 #define CAT(x,y)   CAT1(x,y)
  43
  44 #define DO_DEFAULT_RTC rtc_port: 0x70
  45
  46 #define DO_EV4_MMU                                                      \
  47         .max_asn =                      EV4_MAX_ASN,                    \
  48         .mv_switch_mm =                 ev4_switch_mm,                  \
  49         .mv_activate_mm =               ev4_activate_mm,                \
  50         .mv_flush_tlb_current =         ev4_flush_tlb_current,          \
  51         .mv_flush_tlb_current_page =    ev4_flush_tlb_current_page
  52
  53 #define DO_EV5_MMU                                                      \
  54         .max_asn =                      EV5_MAX_ASN,                    \
  55         .mv_switch_mm =                 ev5_switch_mm,                  \
  56         .mv_activate_mm =               ev5_activate_mm,                \
  57         .mv_flush_tlb_current =         ev5_flush_tlb_current,          \
  58         .mv_flush_tlb_current_page =    ev5_flush_tlb_current_page
  59
  60 #define DO_EV6_MMU                                                      \
  61         .max_asn =                      EV6_MAX_ASN,                    \
  62         .mv_switch_mm =                 ev5_switch_mm,                  \
  63         .mv_activate_mm =               ev5_activate_mm,                \
  64         .mv_flush_tlb_current =         ev5_flush_tlb_current,          \
  65         .mv_flush_tlb_current_page =    ev5_flush_tlb_current_page
  66
  67 #define DO_EV7_MMU                                                      \
  68         .max_asn =                      EV6_MAX_ASN,                    \
  69         .mv_switch_mm =                 ev5_switch_mm,                  \
  70         .mv_activate_mm =               ev5_activate_mm,                \
  71         .mv_flush_tlb_current =         ev5_flush_tlb_current,          \
  72         .mv_flush_tlb_current_page =    ev5_flush_tlb_current_page
  73
  74 #define IO_LITE(UP,low)                                                 \
  75         .hae_register =         (unsigned long *) CAT(UP,_HAE_ADDRESS), \
  76         .iack_sc =              CAT(UP,_IACK_SC),                       \
  77         .mv_ioread8 =           CAT(low,_ioread8),                      \
  78         .mv_ioread16 =          CAT(low,_ioread16),                     \
  79         .mv_ioread32 =          CAT(low,_ioread32),                     \
  80         .mv_iowrite8 =          CAT(low,_iowrite8),                     \
  81         .mv_iowrite16 =         CAT(low,_iowrite16),                    \
  82         .mv_iowrite32 =         CAT(low,_iowrite32),                    \
  83         .mv_readb =             CAT(low,_readb),                        \
  84         .mv_readw =             CAT(low,_readw),                        \
  85         .mv_readl =             CAT(low,_readl),                        \
  86         .mv_readq =             CAT(low,_readq),                        \
  87         .mv_writeb =            CAT(low,_writeb),                       \
  88         .mv_writew =            CAT(low,_writew),                       \
  89         .mv_writel =            CAT(low,_writel),                       \
  90         .mv_writeq =            CAT(low,_writeq),                       \
  91         .mv_ioportmap =         CAT(low,_ioportmap),                    \
  92         .mv_ioremap =           CAT(low,_ioremap),                      \
  93         .mv_iounmap =           CAT(low,_iounmap),                      \
  94         .mv_is_ioaddr =         CAT(low,_is_ioaddr),                    \
  95         .mv_is_mmio =           CAT(low,_is_mmio)                       \
  96
  97 #define IO(UP,low)                                                      \
  98         IO_LITE(UP,low),                                                \
  99         .pci_ops =              &CAT(low,_pci_ops),                     \
 100         .mv_pci_tbi =           CAT(low,_pci_tbi)
 101
 102 #define DO_APECS_IO     IO(APECS,apecs)
 103 #define DO_CIA_IO       IO(CIA,cia)
 104 #define DO_IRONGATE_IO  IO(IRONGATE,irongate)
 105 #define DO_LCA_IO       IO(LCA,lca)
 106 #define DO_MARVEL_IO    IO(MARVEL,marvel)
 107 #define DO_MCPCIA_IO    IO(MCPCIA,mcpcia)
 108 #define DO_POLARIS_IO   IO(POLARIS,polaris)
 109 #define DO_T2_IO        IO(T2,t2)
 110 #define DO_TSUNAMI_IO   IO(TSUNAMI,tsunami)
 111 #define DO_TITAN_IO     IO(TITAN,titan)
 112 #define DO_WILDFIRE_IO  IO(WILDFIRE,wildfire)
 113
 114 #define DO_PYXIS_IO     IO_LITE(CIA,cia_bwx), \
 115                         .pci_ops = &cia_pci_ops, \
 116                         .mv_pci_tbi = cia_pci_tbi
 117
 118 /*
 119  * In a GENERIC kernel, we have lots of these vectors floating about,
 120  * all but one of which we want to go away.  In a non-GENERIC kernel,
 121  * we want only one, ever.
 122  *
 123  * Accomplish this in the GENERIC kernel by putting all of the vectors
 124  * in the .init.data section where they'll go away.  We'll copy the
 125  * one we want to the real alpha_mv vector in setup_arch.
 126  *
 127  * Accomplish this in a non-GENERIC kernel by ifdef'ing out all but
 128  * one of the vectors, which will not reside in .init.data.  We then
 129  * alias this one vector to alpha_mv, so no copy is needed.
 130  *
 131  * Upshot: set __initdata to nothing for non-GENERIC kernels.
 132  */
 133
 134 #ifdef CONFIG_ALPHA_GENERIC
 135 #define __initmv __initdata
 136 #define ALIAS_MV(x)
 137 #else
 138 #define __initmv
 139
 140 /* GCC actually has a syntax for defining aliases, but is under some
 141    delusion that you shouldn't be able to declare it extern somewhere
 142    else beforehand.  Fine.  We'll do it ourselves.  */
 143 #if 0
 144 #define ALIAS_MV(system) \
 145   struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv")));
 146 #else
 147 #define ALIAS_MV(system) \
 148   asm(".global alpha_mv\nalpha_mv = " #system "_mv");
 149 #endif
 150 #endif /* GENERIC */