File: /usr/src/linux/arch/alpha/kernel/machvec_impl.h
1 /*
2 * linux/arch/alpha/kernel/machvec.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 <linux/config.h>
10 #include <asm/pgalloc.h>
11
12 /* Whee. IRONGATE, POLARIS, TSUNAMI, TITAN, and WILDFIRE don't have an HAE.
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 POLARIS_HAE_ADDRESS (&alpha_mv.hae_cache)
17 #define TSUNAMI_HAE_ADDRESS (&alpha_mv.hae_cache)
18 #define TITAN_HAE_ADDRESS (&alpha_mv.hae_cache)
19 #define WILDFIRE_HAE_ADDRESS (&alpha_mv.hae_cache)
20
21 #if CIA_ONE_HAE_WINDOW
22 #define CIA_HAE_ADDRESS (&alpha_mv.hae_cache)
23 #endif
24 #if MCPCIA_ONE_HAE_WINDOW
25 #define MCPCIA_HAE_ADDRESS (&alpha_mv.hae_cache)
26 #endif
27
28 /* Only a few systems don't define IACK_SC, handling all interrupts through
29 the SRM console. But splitting out that one case from IO() below
30 seems like such a pain. Define this to get things to compile. */
31 #define JENSEN_IACK_SC 1
32 #define T2_IACK_SC 1
33 #define WILDFIRE_IACK_SC 1 /* FIXME */
34
35
36 /*
37 * Some helpful macros for filling in the blanks.
38 */
39
40 #define CAT1(x,y) x##y
41 #define CAT(x,y) CAT1(x,y)
42
43 #define DO_DEFAULT_RTC rtc_port: 0x70
44
45 #define DO_EV4_MMU \
46 max_asn: EV4_MAX_ASN, \
47 mv_switch_mm: ev4_switch_mm, \
48 mv_activate_mm: ev4_activate_mm, \
49 mv_flush_tlb_current: ev4_flush_tlb_current, \
50 mv_flush_tlb_current_page: ev4_flush_tlb_current_page
51
52 #define DO_EV5_MMU \
53 max_asn: EV5_MAX_ASN, \
54 mv_switch_mm: ev5_switch_mm, \
55 mv_activate_mm: ev5_activate_mm, \
56 mv_flush_tlb_current: ev5_flush_tlb_current, \
57 mv_flush_tlb_current_page: ev5_flush_tlb_current_page
58
59 #define DO_EV6_MMU \
60 max_asn: EV6_MAX_ASN, \
61 mv_switch_mm: ev5_switch_mm, \
62 mv_activate_mm: ev5_activate_mm, \
63 mv_flush_tlb_current: ev5_flush_tlb_current, \
64 mv_flush_tlb_current_page: ev5_flush_tlb_current_page
65
66 #define IO_LITE(UP,low) \
67 hae_register: (unsigned long *) CAT(UP,_HAE_ADDRESS), \
68 iack_sc: CAT(UP,_IACK_SC), \
69 mv_inb: CAT(low,_inb), \
70 mv_inw: CAT(low,_inw), \
71 mv_inl: CAT(low,_inl), \
72 mv_outb: CAT(low,_outb), \
73 mv_outw: CAT(low,_outw), \
74 mv_outl: CAT(low,_outl), \
75 mv_readb: CAT(low,_readb), \
76 mv_readw: CAT(low,_readw), \
77 mv_readl: CAT(low,_readl), \
78 mv_readq: CAT(low,_readq), \
79 mv_writeb: CAT(low,_writeb), \
80 mv_writew: CAT(low,_writew), \
81 mv_writel: CAT(low,_writel), \
82 mv_writeq: CAT(low,_writeq), \
83 mv_ioremap: CAT(low,_ioremap), \
84 mv_iounmap: CAT(low,_iounmap) \
85
86 #define IO(UP,low) \
87 IO_LITE(UP,low), \
88 pci_ops: &CAT(low,_pci_ops)
89
90 #define DO_APECS_IO IO(APECS,apecs)
91 #define DO_CIA_IO IO(CIA,cia)
92 #define DO_IRONGATE_IO IO(IRONGATE,irongate)
93 #define DO_LCA_IO IO(LCA,lca)
94 #define DO_MCPCIA_IO IO(MCPCIA,mcpcia)
95 #define DO_POLARIS_IO IO(POLARIS,polaris)
96 #define DO_T2_IO IO(T2,t2)
97 #define DO_TSUNAMI_IO IO(TSUNAMI,tsunami)
98 #define DO_TITAN_IO IO(TITAN,titan)
99 #define DO_WILDFIRE_IO IO(WILDFIRE,wildfire)
100
101 #define DO_PYXIS_IO IO_LITE(CIA,cia_bwx), \
102 pci_ops: &CAT(cia,_pci_ops)
103
104 #define BUS(which) \
105 mv_is_ioaddr: CAT(which,_is_ioaddr), \
106 mv_pci_tbi: CAT(which,_pci_tbi)
107
108 #define DO_APECS_BUS BUS(apecs)
109 #define DO_CIA_BUS BUS(cia)
110 #define DO_IRONGATE_BUS BUS(irongate)
111 #define DO_LCA_BUS BUS(lca)
112 #define DO_MCPCIA_BUS BUS(mcpcia)
113 #define DO_POLARIS_BUS BUS(polaris)
114 #define DO_T2_BUS BUS(t2)
115 #define DO_TSUNAMI_BUS BUS(tsunami)
116 #define DO_TITAN_BUS BUS(titan)
117 #define DO_WILDFIRE_BUS BUS(wildfire)
118
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
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 #else
149 #define ALIAS_MV(system) \
150 asm(".global alpha_mv\nalpha_mv = " #system "_mv");
151 #endif
152 #endif /* GENERIC */
153