1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/arch/alpha/kernel/machvec_impl.h 4 * 5 * Copyright (C) 1997, 1998 Richard Henderson 6 * 7 * This file has goodies to help simplify instantiation of machine vectors. 8 */ 9 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 #ifdef T2_ONE_HAE_WINDOW 30 #define T2_HAE_ADDRESS (&alpha_mv.hae_cache) 31 #endif 32 33 /* Only a few systems don't define IACK_SC, handling all interrupts through 34 the SRM console. But splitting out that one case from IO() below 35 seems like such a pain. Define this to get things to compile. */ 36 #define JENSEN_IACK_SC 1 37 #define T2_IACK_SC 1 38 #define WILDFIRE_IACK_SC 1 /* FIXME */ 39 40 /* 41 * Some helpful macros for filling in the blanks. 42 */ 43 44 #define CAT1(x,y) x##y 45 #define CAT(x,y) CAT1(x,y) 46 47 #define DO_DEFAULT_RTC .rtc_port = 0x70 48 49 #define DO_EV4_MMU \ 50 .max_asn = EV4_MAX_ASN, \ 51 .mv_switch_mm = ev4_switch_mm, \ 52 .mv_activate_mm = ev4_activate_mm, \ 53 .mv_flush_tlb_current = ev4_flush_tlb_current, \ 54 .mv_flush_tlb_current_page = ev4_flush_tlb_current_page 55 56 #define DO_EV5_MMU \ 57 .max_asn = EV5_MAX_ASN, \ 58 .mv_switch_mm = ev5_switch_mm, \ 59 .mv_activate_mm = ev5_activate_mm, \ 60 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 61 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 62 63 #define DO_EV6_MMU \ 64 .max_asn = EV6_MAX_ASN, \ 65 .mv_switch_mm = ev5_switch_mm, \ 66 .mv_activate_mm = ev5_activate_mm, \ 67 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 68 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 69 70 #define DO_EV7_MMU \ 71 .max_asn = EV6_MAX_ASN, \ 72 .mv_switch_mm = ev5_switch_mm, \ 73 .mv_activate_mm = ev5_activate_mm, \ 74 .mv_flush_tlb_current = ev5_flush_tlb_current, \ 75 .mv_flush_tlb_current_page = ev5_flush_tlb_current_page 76 77 #define IO_LITE(UP,low) \ 78 .hae_register = (unsigned long *) CAT(UP,_HAE_ADDRESS), \ 79 .iack_sc = CAT(UP,_IACK_SC), \ 80 .mv_ioread8 = CAT(low,_ioread8), \ 81 .mv_ioread16 = CAT(low,_ioread16), \ 82 .mv_ioread32 = CAT(low,_ioread32), \ 83 .mv_iowrite8 = CAT(low,_iowrite8), \ 84 .mv_iowrite16 = CAT(low,_iowrite16), \ 85 .mv_iowrite32 = CAT(low,_iowrite32), \ 86 .mv_readb = CAT(low,_readb), \ 87 .mv_readw = CAT(low,_readw), \ 88 .mv_readl = CAT(low,_readl), \ 89 .mv_readq = CAT(low,_readq), \ 90 .mv_writeb = CAT(low,_writeb), \ 91 .mv_writew = CAT(low,_writew), \ 92 .mv_writel = CAT(low,_writel), \ 93 .mv_writeq = CAT(low,_writeq), \ 94 .mv_ioportmap = CAT(low,_ioportmap), \ 95 .mv_ioremap = CAT(low,_ioremap), \ 96 .mv_iounmap = CAT(low,_iounmap), \ 97 .mv_is_ioaddr = CAT(low,_is_ioaddr), \ 98 .mv_is_mmio = CAT(low,_is_mmio) \ 99 100 #define IO(UP,low) \ 101 IO_LITE(UP,low), \ 102 .pci_ops = &CAT(low,_pci_ops), \ 103 .mv_pci_tbi = CAT(low,_pci_tbi) 104 105 #define DO_APECS_IO IO(APECS,apecs) 106 #define DO_CIA_IO IO(CIA,cia) 107 #define DO_IRONGATE_IO IO(IRONGATE,irongate) 108 #define DO_LCA_IO IO(LCA,lca) 109 #define DO_MARVEL_IO IO(MARVEL,marvel) 110 #define DO_MCPCIA_IO IO(MCPCIA,mcpcia) 111 #define DO_POLARIS_IO IO(POLARIS,polaris) 112 #define DO_T2_IO IO(T2,t2) 113 #define DO_TSUNAMI_IO IO(TSUNAMI,tsunami) 114 #define DO_TITAN_IO IO(TITAN,titan) 115 #define DO_WILDFIRE_IO IO(WILDFIRE,wildfire) 116 117 #define DO_PYXIS_IO IO_LITE(CIA,cia_bwx), \ 118 .pci_ops = &cia_pci_ops, \ 119 .mv_pci_tbi = cia_pci_tbi 120 121 /* 122 * In a GENERIC kernel, we have lots of these vectors floating about, 123 * all but one of which we want to go away. In a non-GENERIC kernel, 124 * we want only one, ever. 125 * 126 * Accomplish this in the GENERIC kernel by putting all of the vectors 127 * in the .init.data section where they'll go away. We'll copy the 128 * one we want to the real alpha_mv vector in setup_arch. 129 * 130 * Accomplish this in a non-GENERIC kernel by ifdef'ing out all but 131 * one of the vectors, which will not reside in .init.data. We then 132 * alias this one vector to alpha_mv, so no copy is needed. 133 * 134 * Upshot: set __initdata to nothing for non-GENERIC kernels. 135 */ 136 137 #ifdef CONFIG_ALPHA_GENERIC 138 #define __initmv __initdata 139 #define ALIAS_MV(x) 140 #else 141 #define __initmv __refdata 142 143 /* GCC actually has a syntax for defining aliases, but is under some 144 delusion that you shouldn't be able to declare it extern somewhere 145 else beforehand. Fine. We'll do it ourselves. */ 146 #if 0 147 #define ALIAS_MV(system) \ 148 struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv"))); \ 149 EXPORT_SYMBOL(alpha_mv); 150 #else 151 #define ALIAS_MV(system) \ 152 asm(".global alpha_mv\nalpha_mv = " #system "_mv"); \ 153 EXPORT_SYMBOL(alpha_mv); 154 #endif 155 #endif /* GENERIC */ 156