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| 2 | |
| 3 | * linux/arch/alpha/kernel/machvec_impl.h
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| 4 | *
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| 5 | * Copyright (C) 1997, 1998 Richard Henderson
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| 6 | *
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| 7 | * This file has goodies to help simplify instantiation of machine vectors.
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| 8 |
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| 9 |
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| 10 | |
| 11 | IRONGATE, MARVEL, POLARIS, TSUNAMI, TITAN, WILDFIRE
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| 12 | Fix things up for the GENERIC kernel by defining the HAE address
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| 13 | to be that of the cache. Now we can read and write it as we like. ;-)
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| 14 | #define IRONGATE_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 15 | #define MARVEL_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 16 | #define POLARIS_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 17 | #define TSUNAMI_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 18 | #define TITAN_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 19 | #define WILDFIRE_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 20 |
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| 21 | #ifdef CIA_ONE_HAE_WINDOW
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| 22 | #define CIA_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 23 | #endif
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| 24 | #ifdef MCPCIA_ONE_HAE_WINDOW
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| 25 | #define MCPCIA_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 26 | #endif
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| 27 | #ifdef T2_ONE_HAE_WINDOW
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| 28 | #define T2_HAE_ADDRESS (&alpha_mv.hae_cache)
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| 29 | #endif
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| 30 |
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| 31 | |
| 32 | the SRM console. But splitting out that one case from IO() below
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| 33 | seems like such a pain. Define this to get things to compile.
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| 34 | #define JENSEN_IACK_SC 1
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| 35 | #define T2_IACK_SC 1
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| 36 | #define WILDFIRE_IACK_SC 1
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| 37 |
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| 38 | |
| 39 | * Some helpful macros for filling in the blanks.
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| 40 |
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| 41 |
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| 42 | #define CAT1(x,y) x##y
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| 43 | #define CAT(x,y) CAT1(x,y)
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| 44 |
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| 45 | #define DO_DEFAULT_RTC .rtc_port = 0x70
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| 46 |
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| 47 | #define DO_EV5_MMU \
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| 48 | .max_asn = EV5_MAX_ASN \
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| 49 |
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| 50 | #define DO_EV6_MMU \
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| 51 | .max_asn = EV6_MAX_ASN \
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| 52 |
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| 53 | #define DO_EV7_MMU \
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| 54 | .max_asn = EV6_MAX_ASN \
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| 55 |
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| 56 | #define IO_LITE(UP,low) \
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| 57 | .hae_register = (unsigned long *) CAT(UP,_HAE_ADDRESS), \
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| 58 | .iack_sc = CAT(UP,_IACK_SC), \
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| 59 | .mv_ioread8 = CAT(low,_ioread8), \
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| 60 | .mv_ioread16 = CAT(low,_ioread16), \
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| 61 | .mv_ioread32 = CAT(low,_ioread32), \
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| 62 | .mv_ioread64 = CAT(low,_ioread64), \
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| 63 | .mv_iowrite8 = CAT(low,_iowrite8), \
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| 64 | .mv_iowrite16 = CAT(low,_iowrite16), \
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| 65 | .mv_iowrite32 = CAT(low,_iowrite32), \
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| 66 | .mv_iowrite64 = CAT(low,_iowrite64), \
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| 67 | .mv_readb = CAT(low,_readb), \
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| 68 | .mv_readw = CAT(low,_readw), \
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| 69 | .mv_readl = CAT(low,_readl), \
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| 70 | .mv_readq = CAT(low,_readq), \
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| 71 | .mv_writeb = CAT(low,_writeb), \
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| 72 | .mv_writew = CAT(low,_writew), \
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| 73 | .mv_writel = CAT(low,_writel), \
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| 74 | .mv_writeq = CAT(low,_writeq), \
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| 75 | .mv_ioportmap = CAT(low,_ioportmap), \
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| 76 | .mv_ioremap = CAT(low,_ioremap), \
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| 77 | .mv_iounmap = CAT(low,_iounmap), \
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| 78 | .mv_is_ioaddr = CAT(low,_is_ioaddr), \
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| 79 | .mv_is_mmio = CAT(low,_is_mmio) \
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| 80 |
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| 81 | #define IO(UP,low) \
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| 82 | IO_LITE(UP,low), \
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| 83 | .pci_ops = &CAT(low,_pci_ops), \
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| 84 | .mv_pci_tbi = CAT(low,_pci_tbi)
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| 85 |
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| 86 | #define DO_APECS_IO IO(APECS,apecs)
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| 87 | #define DO_CIA_IO IO(CIA,cia)
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| 88 | #define DO_IRONGATE_IO IO(IRONGATE,irongate)
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| 89 | #define DO_LCA_IO IO(LCA,lca)
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| 90 | #define DO_MARVEL_IO IO(MARVEL,marvel)
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| 91 | #define DO_MCPCIA_IO IO(MCPCIA,mcpcia)
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| 92 | #define DO_POLARIS_IO IO(POLARIS,polaris)
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| 93 | #define DO_T2_IO IO(T2,t2)
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| 94 | #define DO_TSUNAMI_IO IO(TSUNAMI,tsunami)
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| 95 | #define DO_TITAN_IO IO(TITAN,titan)
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| 96 | #define DO_WILDFIRE_IO IO(WILDFIRE,wildfire)
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| 97 |
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| 98 | #define DO_PYXIS_IO IO_LITE(CIA,cia_bwx), \
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| 99 | .pci_ops = &cia_pci_ops, \
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| 100 | .mv_pci_tbi = cia_pci_tbi
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| 101 |
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| 102 | |
| 103 | * In a GENERIC kernel, we have lots of these vectors floating about,
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| 104 | * all but one of which we want to go away. In a non-GENERIC kernel,
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| 105 | * we want only one, ever.
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| 106 | *
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| 107 | * Accomplish this in the GENERIC kernel by putting all of the vectors
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| 108 | * in the .init.data section where they'll go away. We'll copy the
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| 109 | * one we want to the real alpha_mv vector in setup_arch.
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| 110 | *
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| 111 | * Accomplish this in a non-GENERIC kernel by ifdef'ing out all but
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| 112 | * one of the vectors, which will not reside in .init.data. We then
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| 113 | * alias this one vector to alpha_mv, so no copy is needed.
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| 114 | *
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| 115 | * Upshot: set __initdata to nothing for non-GENERIC kernels.
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| 116 |
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| 117 |
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| 118 | #ifdef CONFIG_ALPHA_GENERIC
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| 119 | #define __initmv __initdata
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| 120 | #define ALIAS_MV(x)
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| 121 | #else
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| 122 | #define __initmv __refdata
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| 123 |
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| 124 | |
| 125 | delusion that you shouldn't be able to declare it extern somewhere
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| 126 | else beforehand. Fine. We'll do it ourselves.
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| 127 | #if 0 |
| 128 | #define ALIAS_MV(system) \
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| 129 | struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv"))); \
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| 130 | EXPORT_SYMBOL(alpha_mv);
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| 131 | #else
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| 132 | #define ALIAS_MV(system) \
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| 133 | asm(".global alpha_mv\nalpha_mv = " #system "_mv"); \
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| 134 | EXPORT_SYMBOL(alpha_mv);
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| 135 | #endif
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| 136 | #endif
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