1 /* 2 * linux/arch/alpha/kernel/machvec_impl.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 <asm/pgalloc.h> 10 11 /* Whee. These systems don't have an HAE: 12 IRONGATE, MARVEL, POLARIS, TSUNAMI, TITAN, WILDFIRE 13 Fix things up for the GENERIC kernel by defining the HAE address 14 to be that of the cache. Now we can read and write it as we like. ;-) */ 15 #define IRONGATE_HAE_ADDRESS (&alpha_mv.hae_cache) 16 #define MARVEL_HAE_ADDRESS (&alpha_mv.hae_cache) 17 #define POLARIS_HAE_ADDRESS (&alpha_mv.hae_cache) 18 #define TSUNAMI_HAE_ADDRESS (&alpha_mv.hae_cache) 19 #define TITAN_HAE_ADDRESS (&alpha_mv.hae_cache) 20 #define WILDFIRE_HAE_ADDRESS (&alpha_mv.hae_cache) 21 22 #ifdef CIA_ONE_HAE_WINDOW 23 #define CIA_HAE_ADDRESS (&alpha_mv.hae_cache) 24 #endif 25 #ifdef MCPCIA_ONE_HAE_WINDOW 26 #define MCPCIA_HAE_ADDRESS (&alpha_mv.hae_cache) 27 #endif 28 #ifdef T2_ONE_HAE_WINDOW 29 #define T2_HAE_ADDRESS (&alpha_mv.hae_cache) 30 #endif 31 32 /* Only a few systems don't define IACK_SC, handling all interrupts through 33 the SRM console. But splitting out that one case from IO() below 34 seems like such a pain. Define this to get things to compile. */ 35 #define JENSEN_IACK_SC 1 36 #define T2_IACK_SC 1 37 #define WILDFIRE_IACK_SC 1 /* FIXME */ 38 39 /* 40 * Some helpful macros for filling in the blanks. 41 */ 42 43 #define CAT1(x,y) x##y 44 #define CAT(x,y) CAT1(x,y) 45 46 #define DO_DEFAULT_RTC .rtc_port = 0x70 47 48 #define DO_EV4_MMU \ 49 .max_asn = EV4_MAX_ASN, \ 50 .mv_switch_mm = ev4_switch_mm, \ 51 .mv_activate_mm = ev4_activate_mm, \ 52 .mv_flush_tlb_current = ev4_flush_tlb_current, \ 53 .mv_flush_tlb_current_page = ev4_flush_tlb_current_page 54 55 #define DO_EV5_MMU \ 56 .max_asn = EV5_MAX_ASN, \ 57 .mv_switch_mm = ev5_switch_mm, \ 58 .mv_activate_mm = ev5_activate_mm, \ 59 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 60 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 61 62 #define DO_EV6_MMU \ 63 .max_asn = EV6_MAX_ASN, \ 64 .mv_switch_mm = ev5_switch_mm, \ 65 .mv_activate_mm = ev5_activate_mm, \ 66 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 67 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 68 69 #define DO_EV7_MMU \ 70 .max_asn = EV6_MAX_ASN, \ 71 .mv_switch_mm = ev5_switch_mm, \ 72 .mv_activate_mm = ev5_activate_mm, \ 73 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 74 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 75 76 #define IO_LITE(UP,low) \ 77 .hae_register = (unsigned long *) CAT(UP,_HAE_ADDRESS), \ 78 .iack_sc = CAT(UP,_IACK_SC), \ 79 .mv_ioread8 = CAT(low,_ioread8), \ 80 .mv_ioread16 = CAT(low,_ioread16), \ 81 .mv_ioread32 = CAT(low,_ioread32), \ 82 .mv_iowrite8 = CAT(low,_iowrite8), \ 83 .mv_iowrite16 = CAT(low,_iowrite16), \ 84 .mv_iowrite32 = CAT(low,_iowrite32), \ 85 .mv_readb = CAT(low,_readb), \ 86 .mv_readw = CAT(low,_readw), \ 87 .mv_readl = CAT(low,_readl), \ 88 .mv_readq = CAT(low,_readq), \ 89 .mv_writeb = CAT(low,_writeb), \ 90 .mv_writew = CAT(low,_writew), \ 91 .mv_writel = CAT(low,_writel), \ 92 .mv_writeq = CAT(low,_writeq), \ 93 .mv_ioportmap = CAT(low,_ioportmap), \ 94 .mv_ioremap = CAT(low,_ioremap), \ 95 .mv_iounmap = CAT(low,_iounmap), \ 96 .mv_is_ioaddr = CAT(low,_is_ioaddr), \ 97 .mv_is_mmio = CAT(low,_is_mmio) \ 98 99 #define IO(UP,low) \ 100 IO_LITE(UP,low), \ 101 .pci_ops = &CAT(low,_pci_ops), \ 102 .mv_pci_tbi = CAT(low,_pci_tbi) 103 104 #define DO_APECS_IO IO(APECS,apecs) 105 #define DO_CIA_IO IO(CIA,cia) 106 #define DO_IRONGATE_IO IO(IRONGATE,irongate) 107 #define DO_LCA_IO IO(LCA,lca) 108 #define DO_MARVEL_IO IO(MARVEL,marvel) 109 #define DO_MCPCIA_IO IO(MCPCIA,mcpcia) 110 #define DO_POLARIS_IO IO(POLARIS,polaris) 111 #define DO_T2_IO IO(T2,t2) 112 #define DO_TSUNAMI_IO IO(TSUNAMI,tsunami) 113 #define DO_TITAN_IO IO(TITAN,titan) 114 #define DO_WILDFIRE_IO IO(WILDFIRE,wildfire) 115 116 #define DO_PYXIS_IO IO_LITE(CIA,cia_bwx), \ 117 .pci_ops = &cia_pci_ops, \ 118 .mv_pci_tbi = cia_pci_tbi 119 120 /* 121 * In a GENERIC kernel, we have lots of these vectors floating about, 122 * all but one of which we want to go away. In a non-GENERIC kernel, 123 * we want only one, ever. 124 * 125 * Accomplish this in the GENERIC kernel by putting all of the vectors 126 * in the .init.data section where they'll go away. We'll copy the 127 * one we want to the real alpha_mv vector in setup_arch. 128 * 129 * Accomplish this in a non-GENERIC kernel by ifdef'ing out all but 130 * one of the vectors, which will not reside in .init.data. We then 131 * alias this one vector to alpha_mv, so no copy is needed. 132 * 133 * Upshot: set __initdata to nothing for non-GENERIC kernels. 134 */ 135 136 #ifdef CONFIG_ALPHA_GENERIC 137 #define __initmv __initdata 138 #define ALIAS_MV(x) 139 #else 140 #define __initmv __refdata 141 142 /* GCC actually has a syntax for defining aliases, but is under some 143 delusion that you shouldn't be able to declare it extern somewhere 144 else beforehand. Fine. We'll do it ourselves. */ 145 #if 0 146 #define ALIAS_MV(system) \ 147 struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv"))); \ 148 EXPORT_SYMBOL(alpha_mv); 149 #else 150 #define ALIAS_MV(system) \ 151 asm(".global alpha_mv\nalpha_mv = " #system "_mv"); \ 152 EXPORT_SYMBOL(alpha_mv); 153 #endif 154 #endif /* GENERIC */ 155