scoutos / prex-0.9.0 / sys / include / hal.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 2005-2009, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | #ifndef _PREX_HAL_H
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31 | #define _PREX_HAL_H
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32 | |||
33 | #include <types.h> |
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34 | #include <sys/bootinfo.h> |
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35 | #include <context.h> |
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36 | #include <mmu.h> |
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37 | |||
38 | #define NO_PGD ((pgd_t)0) /* non-existent pgd */ |
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39 | |||
40 | /*
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41 | * Types for context_set()
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42 | */
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43 | #define CTX_KSTACK 0 /* set kernel mode stack address */ |
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44 | #define CTX_KENTRY 1 /* set kernel mode entry address */ |
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45 | #define CTX_KARG 2 /* set kernel mode argument */ |
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46 | #define CTX_USTACK 3 /* set user mode stack address */ |
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47 | #define CTX_UENTRY 4 /* set user mode entry addres */ |
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48 | #define CTX_UARG 5 /* set user mode argument */ |
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49 | |||
50 | /*
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51 | * page types for mmu_map()
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52 | */
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53 | #define PG_UNMAP 0 /* no page */ |
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54 | #define PG_READ 1 /* user - read only */ |
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55 | #define PG_WRITE 2 /* user - read/write */ |
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56 | #define PG_SYSTEM 3 /* system */ |
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57 | #define PG_IOMEM 4 /* system - no cache */ |
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58 | |||
59 | /*
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60 | * Virtual/physical address mapping
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61 | */
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62 | struct mmumap
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63 | { |
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64 | vaddr_t virt; /* virtual address */
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65 | paddr_t phys; /* physical address */
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66 | psize_t size; /* size */
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67 | int type; /* mapping type */ |
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68 | }; |
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69 | |||
70 | #define AUTOSIZE 0 |
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71 | |||
72 | /*
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73 | * type of virtual memory mappings
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74 | */
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75 | #define VMT_NULL 0 |
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76 | #define VMT_RAM 1 |
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77 | #define VMT_ROM 2 |
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78 | #define VMT_DMA 3 |
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79 | #define VMT_IO 4 |
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80 | |||
81 | |||
82 | /*
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83 | * Return value of ISR
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84 | */
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85 | #define INT_DONE 0 /* done */ |
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86 | #define INT_ERROR 1 /* error */ |
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87 | #define INT_CONTINUE 2 /* continue to IST */ |
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88 | |||
89 | /* No IST for irq_attach() */
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90 | #define IST_NONE ((void (*)(void *)) -1) |
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91 | |||
92 | /*
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93 | * Interrupt mode for interrupt_setup()
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94 | */
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95 | #define IMODE_EDGE 0 /* edge trigger */ |
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96 | #define IMODE_LEVEL 1 /* level trigger */ |
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97 | |||
98 | |||
99 | __BEGIN_DECLS |
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100 | void context_set(context_t, int, register_t); |
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101 | void context_switch(context_t, context_t);
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102 | void context_save(context_t);
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103 | void context_restore(context_t);
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104 | void context_dump(context_t);
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105 | |||
106 | void mmu_init(struct mmumap *); |
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107 | void mmu_premap(paddr_t, vaddr_t);
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108 | pgd_t mmu_newmap(void);
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109 | void mmu_terminate(pgd_t);
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110 | int mmu_map(pgd_t, paddr_t, vaddr_t, size_t, int); |
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111 | void mmu_switch(pgd_t);
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112 | paddr_t mmu_extract(pgd_t, vaddr_t, size_t); |
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113 | |||
114 | int copyin(const void *, void *, size_t); |
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115 | int copyout(const void *, void *, size_t); |
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116 | int copyinstr(const void *, void *, size_t); |
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117 | |||
118 | int splhigh(void); |
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119 | int spl0(void); |
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120 | void splx(int); |
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121 | |||
122 | void syscall_ret(void); |
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123 | |||
124 | void interrupt_mask(int); |
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125 | void interrupt_unmask(int, int); |
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126 | void interrupt_setup(int, int); |
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127 | void interrupt_init(void); |
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128 | |||
129 | void machine_startup(void); |
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130 | void machine_idle(void); |
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131 | void machine_powerdown(int); |
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132 | void machine_abort(void); |
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133 | void machine_bootinfo(struct bootinfo **); |
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134 | |||
135 | void clock_init(void); |
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136 | |||
137 | #ifdef DEBUG
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138 | void diag_init(void); |
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139 | void diag_puts(char *); |
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140 | #else
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141 | #define diag_init() ((void)0) |
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142 | #endif
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143 | __END_DECLS |
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144 | |||
145 | #endif /* !_PREX_HAL_H */ |