1 | ///////////////////////////////////////////////////////////////////////////// |
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2 | // File : stdio.h |
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3 | // Date : 01/04/2010 |
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4 | // Author : alain greiner & Joel Porquet |
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5 | // Copyright (c) UPMC-LIP6 |
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6 | ///////////////////////////////////////////////////////////////////////////// |
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7 | // The stdio.c and stdio.h files are part of the GIET_VM nano-kernel. |
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8 | // This library contains all user-level functions that contain a system call |
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9 | // to access protected or shared ressources. |
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10 | ///////////////////////////////////////////////////////////////////////////// |
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11 | |
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12 | #ifndef _STDIO_H |
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13 | #define _STDIO_H |
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14 | |
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15 | #include "giet_fat32/fat32_shared.h" |
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16 | |
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17 | // These define must be synchronised with |
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18 | // the _syscall_vector defined in file sys_handler.c |
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19 | |
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20 | #define SYSCALL_PROC_XYP 0x00 |
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21 | #define SYSCALL_PROC_TIME 0x01 |
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22 | #define SYSCALL_TTY_WRITE 0x02 |
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23 | #define SYSCALL_TTY_READ 0x03 |
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24 | #define SYSCALL_TTY_ALLOC 0x04 |
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25 | #define SYSCALL_TTY_GET_LOCK 0x05 |
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26 | #define SYSCALL_TTY_RELEASE_LOCK 0x06 |
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27 | #define SYSCALL_HEAP_INFO 0x07 |
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28 | #define SYSCALL_LOCAL_TASK_ID 0x08 |
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29 | #define SYSCALL_GLOBAL_TASK_ID 0x09 |
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30 | #define SYSCALL_FBF_CMA_ALLOC 0x0A |
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31 | #define SYSCALL_FBF_CMA_INIT_BUF 0x0B |
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32 | #define SYSCALL_FBF_CMA_START 0x0C |
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33 | #define SYSCALL_FBF_CMA_DISPLAY 0x0D |
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34 | #define SYSCALL_FBF_CMA_STOP 0x0E |
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35 | #define SYSCALL_EXIT 0x0F |
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36 | |
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37 | #define SYSCALL_PROCS_NUMBER 0x10 |
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38 | #define SYSCALL_FBF_SYNC_WRITE 0x11 |
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39 | #define SYSCALL_FBF_SYNC_READ 0x12 |
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40 | #define SYSCALL_THREAD_ID 0x13 |
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41 | #define SYSCALL_TIM_ALLOC 0x14 |
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42 | #define SYSCALL_TIM_START 0x15 |
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43 | #define SYSCALL_TIM_STOP 0x16 |
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44 | #define SYSCALL_KILL_APP 0x17 |
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45 | #define SYSCALL_EXEC_APP 0x18 |
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46 | #define SYSCALL_CTX_SWITCH 0x19 |
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47 | #define SYSCALL_VOBJ_GET_VBASE 0x1A |
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48 | #define SYSCALL_VOBJ_GET_LENGTH 0x1B |
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49 | #define SYSCALL_GET_XY 0x1C |
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50 | // 0x1D |
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51 | // 0x1E |
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52 | // 0x1F |
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53 | |
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54 | #define SYSCALL_FAT_OPEN 0x20 |
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55 | #define SYSCALL_FAT_READ 0x21 |
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56 | #define SYSCALL_FAT_WRITE 0x22 |
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57 | #define SYSCALL_FAT_LSEEK 0x23 |
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58 | #define SYSCALL_FAT_FINFO 0x24 |
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59 | #define SYSCALL_FAT_CLOSE 0x25 |
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60 | #define SYSCALL_FAT_REMOVE 0x26 |
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61 | #define SYSCALL_FAT_RENAME 0x27 |
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62 | #define SYSCALL_FAT_MKDIR 0x28 |
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63 | #define SYSCALL_FAT_OPENDIR 0x29 |
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64 | #define SYSCALL_FAT_CLOSEDIR 0x2A |
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65 | #define SYSCALL_FAT_READDIR 0x2B |
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66 | // 0x2C |
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67 | // 0x2D |
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68 | // 0x2E |
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69 | // 0x2F |
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70 | |
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71 | #define SYSCALL_NIC_ALLOC 0x30 |
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72 | #define SYSCALL_NIC_START 0x31 |
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73 | #define SYSCALL_NIC_MOVE 0x32 |
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74 | #define SYSCALL_NIC_STOP 0x33 |
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75 | #define SYSCALL_NIC_STATS 0x34 |
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76 | #define SYSCALL_NIC_CLEAR 0x35 |
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77 | // 0x36 |
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78 | // 0x37 |
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79 | // 0x38 |
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80 | // 0x39 |
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81 | // 0x3A |
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82 | #define SYSCALL_COPROC_COMPLETED 0x3B |
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83 | #define SYSCALL_COPROC_ALLOC 0x3C |
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84 | #define SYSCALL_COPROC_CHANNEL_INIT 0x3D |
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85 | #define SYSCALL_COPROC_RUN 0x3E |
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86 | #define SYSCALL_COPROC_RELEASE 0x3F |
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87 | |
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88 | //////////////////////////////////////////////////////////////////////////// |
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89 | // NULL pointer definition |
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90 | //////////////////////////////////////////////////////////////////////////// |
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91 | |
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92 | #define NULL (void *)0 |
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93 | |
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94 | //////////////////////////////////////////////////////////////////////////// |
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95 | // This generic C function is used to implement all system calls. |
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96 | // It writes the system call arguments in the proper registers, |
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97 | // and tells GCC what has been modified by system call execution. |
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98 | // Returns -1 to signal an error. |
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99 | //////////////////////////////////////////////////////////////////////////// |
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100 | static inline int sys_call( int call_no, |
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101 | int arg_0, |
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102 | int arg_1, |
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103 | int arg_2, |
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104 | int arg_3 ) |
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105 | { |
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106 | register int reg_no_and_output asm("v0") = call_no; |
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107 | register int reg_a0 asm("a0") = arg_0; |
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108 | register int reg_a1 asm("a1") = arg_1; |
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109 | register int reg_a2 asm("a2") = arg_2; |
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110 | register int reg_a3 asm("a3") = arg_3; |
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111 | |
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112 | asm volatile( |
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113 | "syscall" |
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114 | : "+r" (reg_no_and_output), /* input/output argument */ |
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115 | "+r" (reg_a0), |
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116 | "+r" (reg_a1), |
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117 | "+r" (reg_a2), |
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118 | "+r" (reg_a3), |
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119 | "+r" (reg_no_and_output) |
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120 | : /* input arguments */ |
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121 | : "memory", |
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122 | /* These persistant registers will be saved on the stack by the |
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123 | * compiler only if they contain relevant data. */ |
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124 | "at", |
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125 | "v1", |
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126 | "ra", |
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127 | "t0", |
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128 | "t1", |
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129 | "t2", |
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130 | "t3", |
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131 | "t4", |
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132 | "t5", |
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133 | "t6", |
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134 | "t7", |
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135 | "t8", |
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136 | "t9" |
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137 | ); |
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138 | return (volatile int)reg_no_and_output; |
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139 | } |
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140 | |
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141 | ////////////////////////////////////////////////////////////////////////// |
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142 | // MIPS32 related system calls |
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143 | ////////////////////////////////////////////////////////////////////////// |
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144 | |
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145 | extern void giet_proc_xyp( unsigned int* cluster_x, |
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146 | unsigned int* cluster_y, |
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147 | unsigned int* lpid ); |
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148 | |
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149 | extern unsigned int giet_proctime(); |
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150 | |
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151 | extern unsigned int giet_rand(); |
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152 | |
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153 | ////////////////////////////////////////////////////////////////////////// |
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154 | // Task related system calls |
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155 | ////////////////////////////////////////////////////////////////////////// |
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156 | |
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157 | extern unsigned int giet_proc_task_id(); |
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158 | |
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159 | extern unsigned int giet_global_task_id(); |
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160 | |
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161 | extern unsigned int giet_thread_id(); |
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162 | |
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163 | extern void giet_exit( char* string ); |
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164 | |
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165 | extern void giet_assert( unsigned int condition, |
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166 | char* string ); |
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167 | |
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168 | extern void giet_context_switch(); |
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169 | |
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170 | ////////////////////////////////////////////////////////////////////////// |
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171 | // Application related system calls |
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172 | ////////////////////////////////////////////////////////////////////////// |
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173 | |
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174 | extern int giet_kill_application( char* name ); |
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175 | |
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176 | extern int giet_exec_application( char* name ); |
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177 | |
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178 | ////////////////////////////////////////////////////////////////////////// |
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179 | // Coprocessors related system calls |
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180 | ////////////////////////////////////////////////////////////////////////// |
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181 | |
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182 | // this structure is used by the giet_coproc_channel_init() |
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183 | // system call to specify the communication channel parameters. |
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184 | typedef struct giet_coproc_channel |
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185 | { |
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186 | unsigned int channel_mode; // MWMR / DMA_IRQ / DMA_NO_IRQ |
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187 | unsigned int buffer_size; // memory buffer size |
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188 | unsigned int buffer_vaddr; // memory buffer virtual address |
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189 | unsigned int mwmr_vaddr; // MWMR descriptor virtual address |
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190 | unsigned int lock_vaddr; // lock for MWMR virtual address |
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191 | } giet_coproc_channel_t; |
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192 | |
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193 | extern void giet_coproc_alloc( unsigned int coproc_type, |
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194 | unsigned int* coproc_info ); |
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195 | |
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196 | extern void giet_coproc_release( unsigned int coproc_reg_index ); |
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197 | |
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198 | extern void giet_coproc_channel_init( unsigned int channel, |
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199 | giet_coproc_channel_t* desc ); |
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200 | |
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201 | extern void giet_coproc_run( unsigned int coproc_reg_index ); |
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202 | |
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203 | extern void giet_coproc_completed(); |
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204 | |
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205 | ////////////////////////////////////////////////////////////////////////// |
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206 | // TTY device related system calls |
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207 | ////////////////////////////////////////////////////////////////////////// |
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208 | |
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209 | extern void giet_tty_alloc(); |
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210 | |
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211 | extern void giet_tty_printf( char* format, ... ); |
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212 | |
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213 | extern void giet_shr_printf( char* format, ... ); |
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214 | |
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215 | extern void giet_tty_getc( char* byte ); |
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216 | |
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217 | extern void giet_tty_gets( char* buf, unsigned int bufsize ); |
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218 | |
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219 | extern void giet_tty_getw( unsigned int* val ); |
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220 | |
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221 | ////////////////////////////////////////////////////////////////////////// |
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222 | // TIMER device related system calls |
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223 | ////////////////////////////////////////////////////////////////////////// |
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224 | |
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225 | extern void giet_timer_alloc(); |
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226 | |
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227 | extern void giet_timer_start( unsigned int period ); |
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228 | |
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229 | extern void giet_timer_stop(); |
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230 | |
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231 | ////////////////////////////////////////////////////////////////////////// |
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232 | // Frame buffer device related system calls |
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233 | ////////////////////////////////////////////////////////////////////////// |
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234 | |
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235 | extern void giet_fbf_cma_alloc(); |
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236 | |
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237 | extern void giet_fbf_cma_init_buf( void* buf0_vbase, |
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238 | void* buf1_vbase, |
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239 | void* sts0_vaddr, |
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240 | void* sts1_vaddr ); |
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241 | |
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242 | extern void giet_fbf_cma_start( unsigned int length ); |
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243 | |
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244 | extern void giet_fbf_cma_display( unsigned int buffer ); |
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245 | |
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246 | extern void giet_fbf_cma_stop(); |
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247 | |
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248 | extern void giet_fbf_sync_read( unsigned int offset, |
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249 | void* buffer, |
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250 | unsigned int length ); |
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251 | |
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252 | extern void giet_fbf_sync_write( unsigned int offset, |
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253 | void* buffer, |
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254 | unsigned int length ); |
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255 | |
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256 | ////////////////////////////////////////////////////////////////////////// |
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257 | // NIC related system calls |
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258 | ////////////////////////////////////////////////////////////////////////// |
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259 | |
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260 | extern unsigned int giet_nic_rx_alloc( unsigned int xmax, unsigned int ymax ); |
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261 | |
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262 | extern unsigned int giet_nic_tx_alloc( unsigned int xmax, unsigned int ymax ); |
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263 | |
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264 | extern void giet_nic_rx_start( unsigned int channel ); |
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265 | |
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266 | extern void giet_nic_tx_start( unsigned int channel ); |
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267 | |
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268 | extern void giet_nic_rx_move( unsigned int channel, void* buffer ); |
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269 | |
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270 | extern void giet_nic_tx_move( unsigned int channel, void* buffer ); |
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271 | |
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272 | extern void giet_nic_rx_stop( unsigned int channel ); |
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273 | |
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274 | extern void giet_nic_tx_stop( unsigned int channel ); |
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275 | |
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276 | extern void giet_nic_rx_stats( unsigned int channel ); |
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277 | |
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278 | extern void giet_nic_tx_stats( unsigned int channel ); |
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279 | |
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280 | extern void giet_nic_rx_clear( unsigned int channel ); |
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281 | |
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282 | extern void giet_nic_tx_clear( unsigned int channel ); |
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283 | |
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284 | ////////////////////////////////////////////////////////////////////////// |
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285 | // FAT related system calls |
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286 | ////////////////////////////////////////////////////////////////////////// |
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287 | |
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288 | extern int giet_fat_open( char* pathname, |
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289 | unsigned int flags ); |
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290 | |
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291 | extern int giet_fat_close( unsigned int fd_id ); |
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292 | |
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293 | extern int giet_fat_file_info( unsigned int fd_id, |
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294 | fat_file_info_t* info ); |
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295 | |
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296 | extern int giet_fat_read( unsigned int fd_id, |
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297 | void* buffer, |
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298 | unsigned int count ); |
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299 | |
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300 | extern int giet_fat_write( unsigned int fd, |
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301 | void* buffer, |
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302 | unsigned int count ); |
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303 | |
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304 | extern int giet_fat_lseek( unsigned int fd, |
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305 | unsigned int offset, |
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306 | unsigned int whence ); |
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307 | |
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308 | extern int giet_fat_remove( char* pathname, |
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309 | unsigned int should_be_dir ); |
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310 | |
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311 | extern int giet_fat_rename( char* old_path, |
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312 | char* new_path ); |
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313 | |
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314 | extern int giet_fat_mkdir( char* pathname ); |
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315 | |
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316 | extern int giet_fat_opendir( char* pathname ); |
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317 | |
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318 | extern int giet_fat_closedir( unsigned int fd_id ); |
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319 | |
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320 | extern int giet_fat_readdir( unsigned int fd_id, |
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321 | fat_dirent_t* entry ); |
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322 | |
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323 | ////////////////////////////////////////////////////////////////////////// |
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324 | // Miscelaneous system calls |
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325 | ////////////////////////////////////////////////////////////////////////// |
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326 | |
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327 | extern void giet_procs_number( unsigned int* x_size, |
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328 | unsigned int* y_size, |
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329 | unsigned int* nprocs ); |
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330 | |
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331 | extern void giet_vobj_get_vbase( char* vspace_name, |
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332 | char* vobj_name, |
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333 | unsigned int* vobj_vaddr); |
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334 | |
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335 | extern void giet_vobj_get_length( char* vspace_name, |
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336 | char* vobj_name, |
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337 | unsigned int* vobj_vaddr); |
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338 | |
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339 | extern void giet_heap_info( unsigned int* vaddr, |
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340 | unsigned int* length, |
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341 | unsigned int x, |
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342 | unsigned int y ); |
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343 | |
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344 | extern void giet_get_xy( void* ptr, |
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345 | unsigned int* px, |
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346 | unsigned int* py ); |
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347 | |
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348 | #endif |
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349 | |
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350 | // Local Variables: |
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351 | // tab-width: 4 |
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352 | // c-basic-offset: 4 |
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353 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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354 | // indent-tabs-mode: nil |
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355 | // End: |
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356 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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357 | |
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