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2 * linux/arch/alpha/kernel/machvec_impl.h
4 * Copyright (C) 1997, 1998 Richard Henderson
6 * This file has goodies to help simplify instantiation of machine vectors.
9 #include <asm/pgalloc.h>
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)
22 #ifdef CIA_ONE_HAE_WINDOW
23 #define CIA_HAE_ADDRESS (&alpha_mv.hae_cache)
25 #ifdef MCPCIA_ONE_HAE_WINDOW
26 #define MCPCIA_HAE_ADDRESS (&alpha_mv.hae_cache)
28 #ifdef T2_ONE_HAE_WINDOW
29 #define T2_HAE_ADDRESS (&alpha_mv.hae_cache)
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
37 #define WILDFIRE_IACK_SC 1 /* FIXME */
40 * Some helpful macros for filling in the blanks.
43 #define CAT1(x,y) x##y
44 #define CAT(x,y) CAT1(x,y)
46 #define DO_DEFAULT_RTC .rtc_port = 0x70
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
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
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
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
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) \
101 .pci_ops = &CAT(low,_pci_ops), \
102 .mv_pci_tbi = CAT(low,_pci_tbi)
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)
116 #define DO_PYXIS_IO IO_LITE(CIA,cia_bwx), \
117 .pci_ops = &cia_pci_ops, \
118 .mv_pci_tbi = cia_pci_tbi
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.
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.
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.
133 * Upshot: set __initdata to nothing for non-GENERIC kernels.
136 #ifdef CONFIG_ALPHA_GENERIC
137 #define __initmv __initdata
140 #define __initmv __refdata
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. */
146 #define ALIAS_MV(system) \
147 struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv"))); \
148 EXPORT_SYMBOL(alpha_mv);
150 #define ALIAS_MV(system) \
151 asm(".global alpha_mv\nalpha_mv = " #system "_mv"); \
152 EXPORT_SYMBOL(alpha_mv);