ARM: l2c: trial at enabling some Cortex-A9 optimisations
[sfrench/cifs-2.6.git] / arch / arm / include / asm / mach / arch.h
1 /*
2  *  arch/arm/include/asm/mach/arch.h
3  *
4  *  Copyright (C) 2000 Russell King
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10
11 #include <linux/types.h>
12
13 #ifndef __ASSEMBLY__
14 #include <linux/reboot.h>
15
16 struct tag;
17 struct meminfo;
18 struct pt_regs;
19 struct smp_operations;
20 #ifdef CONFIG_SMP
21 #define smp_ops(ops) (&(ops))
22 #define smp_init_ops(ops) (&(ops))
23 #else
24 #define smp_ops(ops) (struct smp_operations *)NULL
25 #define smp_init_ops(ops) (bool (*)(void))NULL
26 #endif
27
28 struct machine_desc {
29         unsigned int            nr;             /* architecture number  */
30         const char              *name;          /* architecture name    */
31         unsigned long           atag_offset;    /* tagged list (relative) */
32         const char *const       *dt_compat;     /* array of device tree
33                                                  * 'compatible' strings */
34
35         unsigned int            nr_irqs;        /* number of IRQs */
36
37 #ifdef CONFIG_ZONE_DMA
38         phys_addr_t             dma_zone_size;  /* size of DMA-able area */
39 #endif
40
41         unsigned int            video_start;    /* start of video RAM   */
42         unsigned int            video_end;      /* end of video RAM     */
43
44         unsigned char           reserve_lp0 :1; /* never has lp0        */
45         unsigned char           reserve_lp1 :1; /* never has lp1        */
46         unsigned char           reserve_lp2 :1; /* never has lp2        */
47         enum reboot_mode        reboot_mode;    /* default restart mode */
48         unsigned                l2c_aux_val;    /* L2 cache aux value   */
49         unsigned                l2c_aux_mask;   /* L2 cache aux mask    */
50         void                    (*l2c_write_sec)(unsigned long, unsigned);
51         struct smp_operations   *smp;           /* SMP operations       */
52         bool                    (*smp_init)(void);
53         void                    (*fixup)(struct tag *, char **,
54                                          struct meminfo *);
55         void                    (*init_meminfo)(void);
56         void                    (*reserve)(void);/* reserve mem blocks  */
57         void                    (*map_io)(void);/* IO mapping function  */
58         void                    (*init_early)(void);
59         void                    (*init_irq)(void);
60         void                    (*init_time)(void);
61         void                    (*init_machine)(void);
62         void                    (*init_late)(void);
63 #ifdef CONFIG_MULTI_IRQ_HANDLER
64         void                    (*handle_irq)(struct pt_regs *);
65 #endif
66         void                    (*restart)(enum reboot_mode, const char *);
67 };
68
69 /*
70  * Current machine - only accessible during boot.
71  */
72 extern const struct machine_desc *machine_desc;
73
74 /*
75  * Machine type table - also only accessible during boot
76  */
77 extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
78 #define for_each_machine_desc(p)                        \
79         for (p = __arch_info_begin; p < __arch_info_end; p++)
80
81 /*
82  * Set of macros to define architecture features.  This is built into
83  * a table by the linker.
84  */
85 #define MACHINE_START(_type,_name)                      \
86 static const struct machine_desc __mach_desc_##_type    \
87  __used                                                 \
88  __attribute__((__section__(".arch.info.init"))) = {    \
89         .nr             = MACH_TYPE_##_type,            \
90         .name           = _name,
91
92 #define MACHINE_END                             \
93 };
94
95 #define DT_MACHINE_START(_name, _namestr)               \
96 static const struct machine_desc __mach_desc_##_name    \
97  __used                                                 \
98  __attribute__((__section__(".arch.info.init"))) = {    \
99         .nr             = ~0,                           \
100         .name           = _namestr,
101
102 #endif