| 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_TASKS_STATUS 0x05 |
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| 26 | // 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 | extern void giet_tasks_status(); |
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| 171 | |
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| 172 | ////////////////////////////////////////////////////////////////////////// |
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| 173 | // Application related system calls |
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| 174 | ////////////////////////////////////////////////////////////////////////// |
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| 175 | |
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| 176 | extern int giet_kill_application( char* name ); |
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| 177 | |
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| 178 | extern int giet_exec_application( char* name ); |
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| 179 | |
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| 180 | ////////////////////////////////////////////////////////////////////////// |
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| 181 | // Coprocessors related system calls |
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| 182 | ////////////////////////////////////////////////////////////////////////// |
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| 183 | |
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| 184 | // this structure is used by the giet_coproc_channel_init() |
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| 185 | // system call to specify the communication channel parameters. |
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| 186 | typedef struct giet_coproc_channel |
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| 187 | { |
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| 188 | unsigned int channel_mode; // MWMR / DMA_IRQ / DMA_NO_IRQ |
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| 189 | unsigned int buffer_size; // memory buffer size |
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| 190 | unsigned int buffer_vaddr; // memory buffer virtual address |
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| 191 | unsigned int mwmr_vaddr; // MWMR descriptor virtual address |
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| 192 | unsigned int lock_vaddr; // lock for MWMR virtual address |
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| 193 | } giet_coproc_channel_t; |
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| 194 | |
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| 195 | extern void giet_coproc_alloc( unsigned int coproc_type, |
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| 196 | unsigned int* coproc_info ); |
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| 197 | |
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| 198 | extern void giet_coproc_release( unsigned int coproc_reg_index ); |
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| 199 | |
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| 200 | extern void giet_coproc_channel_init( unsigned int channel, |
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| 201 | giet_coproc_channel_t* desc ); |
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| 202 | |
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| 203 | extern void giet_coproc_run( unsigned int coproc_reg_index ); |
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| 204 | |
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| 205 | extern void giet_coproc_completed(); |
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| 206 | |
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| 207 | ////////////////////////////////////////////////////////////////////////// |
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| 208 | // TTY device related system calls |
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| 209 | ////////////////////////////////////////////////////////////////////////// |
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| 210 | |
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| 211 | extern void giet_tty_alloc( unsigned int shared ); |
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| 212 | |
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| 213 | extern void giet_tty_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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