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 */