1 | /////////////////////////////////////////////////////////////////////////////////// |
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2 | // File : sys_handler.c |
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3 | // Date : 01/04/2012 |
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4 | // Author : alain greiner and joel porquet |
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5 | // Copyright (c) UPMC-LIP6 |
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6 | /////////////////////////////////////////////////////////////////////////////////// |
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7 | |
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8 | #include <sys_handler.h> |
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9 | #include <tty_driver.h> |
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10 | #include <tim_driver.h> |
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11 | #include <ioc_driver.h> |
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12 | #include <nic_driver.h> |
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13 | #include <mmc_driver.h> |
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14 | #include <cma_driver.h> |
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15 | #include <ctx_handler.h> |
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16 | #include <fat32.h> |
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17 | #include <utils.h> |
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18 | #include <kernel_malloc.h> |
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19 | #include <tty0.h> |
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20 | #include <vmem.h> |
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21 | #include <hard_config.h> |
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22 | #include <giet_config.h> |
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23 | #include <mapping_info.h> |
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24 | |
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25 | #if !defined(SEG_BOOT_MAPPING_BASE) |
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26 | # error: You must define SEG_BOOT_MAPPING_BASE in the hard_config.h file |
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27 | #endif |
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28 | |
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29 | #if !defined(NB_TTY_CHANNELS) |
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30 | # error: You must define NB_TTY_CHANNELS in the hard_config.h file |
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31 | #endif |
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32 | |
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33 | #if (NB_TTY_CHANNELS < 1) |
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34 | # error: NB_TTY_CHANNELS cannot be smaller than 1! |
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35 | #endif |
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36 | |
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37 | #if !defined(NB_TIM_CHANNELS) |
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38 | # error: You must define NB_TIM_CHANNELS in the hard_config.h file |
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39 | #endif |
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40 | |
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41 | #if !defined(NB_NIC_CHANNELS) |
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42 | # error: You must define NB_NIC_CHANNELS in the hard_config.h file |
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43 | #endif |
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44 | |
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45 | #if !defined(NB_CMA_CHANNELS) |
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46 | # error: You must define NB_CMA_CHANNELS in the hard_config.h file |
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47 | #endif |
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48 | |
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49 | #if !defined(GIET_NO_HARD_CC) |
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50 | # error: You must define GIET_NO_HARD_CC in the giet_config.h file |
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51 | #endif |
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52 | |
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53 | #if !defined ( GIET_NIC_MAC4 ) |
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54 | # error: You must define GIET_NIC_MAC4 in the giet_config.h file |
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55 | #endif |
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56 | |
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57 | #if !defined ( GIET_NIC_MAC2 ) |
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58 | # error: You must define GIET_NIC_MAC2 in the giet_config.h file |
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59 | #endif |
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60 | |
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61 | |
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62 | //////////////////////////////////////////////////////////////////////////// |
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63 | // Channel allocators for peripherals |
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64 | // (TTY[0] is reserved for kernel) |
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65 | //////////////////////////////////////////////////////////////////////////// |
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66 | |
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67 | __attribute__((section(".kdata"))) |
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68 | unsigned int _tty_channel_allocator = 1; |
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69 | |
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70 | __attribute__((section(".kdata"))) |
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71 | unsigned int _tim_channel_allocator = 0; |
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72 | |
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73 | __attribute__((section(".kdata"))) |
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74 | unsigned int _cma_channel_allocator = 0; |
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75 | |
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76 | __attribute__((section(".kdata"))) |
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77 | unsigned int _nic_rx_channel_allocator = 0; |
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78 | |
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79 | __attribute__((section(".kdata"))) |
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80 | unsigned int _nic_tx_channel_allocator = 0; |
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81 | |
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82 | //////////////////////////////////////////////////////////////////////////// |
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83 | // These global variables is defined in tty0.c and tty_driver.c files. |
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84 | //////////////////////////////////////////////////////////////////////////// |
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85 | |
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86 | extern sqt_lock_t _tty0_sqt_lock; |
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87 | |
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88 | extern unsigned int _tty_rx_full[NB_TTY_CHANNELS]; |
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89 | |
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90 | extern unsigned int _tty_rx_buf[NB_TTY_CHANNELS]; |
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91 | |
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92 | //////////////////////////////////////////////////////////////////////////// |
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93 | // NIC_RX and NIC_TX chbuf arrays |
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94 | //////////////////////////////////////////////////////////////////////////// |
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95 | |
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96 | __attribute__((section(".kdata"))) |
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97 | nic_chbuf_t _nic_rx_chbuf[NB_NIC_CHANNELS] __attribute__((aligned(64))); |
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98 | |
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99 | __attribute__((section(".kdata"))) |
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100 | nic_chbuf_t _nic_tx_chbuf[NB_NIC_CHANNELS] __attribute__((aligned(64))); |
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101 | |
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102 | //////////////////////////////////////////////////////////////////////////// |
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103 | // FBF related chbuf descriptors array, indexed by the CMA channel index. |
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104 | // Physical addresses of these chbuf descriptors required for L2 cache sync. |
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105 | //////////////////////////////////////////////////////////////////////////// |
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106 | |
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107 | __attribute__((section(".kdata"))) |
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108 | fbf_chbuf_t _fbf_chbuf[NB_CMA_CHANNELS] __attribute__((aligned(64))); |
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109 | |
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110 | __attribute__((section(".kdata"))) |
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111 | unsigned long long _fbf_chbuf_paddr[NB_CMA_CHANNELS]; |
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112 | |
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113 | //////////////////////////////////////////////////////////////////////////// |
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114 | // Initialize the syscall vector with syscall handlers |
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115 | // Note: This array must be synchronised with the define in file stdio.h |
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116 | //////////////////////////////////////////////////////////////////////////// |
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117 | |
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118 | __attribute__((section(".kdata"))) |
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119 | const void * _syscall_vector[64] = |
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120 | { |
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121 | &_sys_proc_xyp, /* 0x00 */ |
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122 | &_get_proctime, /* 0x01 */ |
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123 | &_sys_tty_write, /* 0x02 */ |
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124 | &_sys_tty_read, /* 0x03 */ |
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125 | &_sys_tty_alloc, /* 0x04 */ |
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126 | &_sys_tty_get_lock, /* 0x05 */ |
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127 | &_sys_tty_release_lock, /* 0x06 */ |
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128 | &_sys_heap_info, /* 0x07 */ |
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129 | &_sys_local_task_id, /* 0x08 */ |
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130 | &_sys_global_task_id, /* 0x09 */ |
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131 | &_sys_fbf_cma_alloc, /* 0x0A */ |
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132 | &_sys_fbf_cma_start, /* 0x0B */ |
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133 | &_sys_fbf_cma_display, /* 0x0C */ |
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134 | &_sys_fbf_cma_stop, /* 0x0D */ |
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135 | &_sys_task_exit, /* 0x0E */ |
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136 | &_sys_procs_number, /* 0x0F */ |
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137 | |
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138 | &_sys_fbf_sync_write, /* 0x10 */ |
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139 | &_sys_fbf_sync_read, /* 0x11 */ |
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140 | &_sys_thread_id, /* 0x12 */ |
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141 | &_sys_ukn, /* 0x13 */ |
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142 | &_sys_tim_alloc, /* 0x14 */ |
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143 | &_sys_tim_start, /* 0x15 */ |
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144 | &_sys_tim_stop, /* 0x16 */ |
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145 | &_sys_ukn, /* 0x17 */ |
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146 | &_sys_ukn, /* 0x18 */ |
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147 | &_context_switch, /* 0x19 */ |
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148 | &_sys_vobj_get_vbase, /* 0x1A */ |
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149 | &_sys_vobj_get_length, /* 0x1B */ |
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150 | &_sys_xy_from_ptr, /* 0x1C */ |
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151 | &_sys_ukn, /* 0x1D */ |
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152 | &_sys_ukn, /* 0x1E */ |
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153 | &_sys_ukn, /* 0x1F */ |
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154 | |
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155 | &_fat_user_open, /* 0x20 */ |
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156 | &_fat_user_read, /* 0x21 */ |
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157 | &_fat_user_write, /* 0x22 */ |
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158 | &_fat_user_lseek, /* 0x23 */ |
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159 | &_fat_fstat, /* 0x24 */ |
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160 | &_fat_close, /* 0x25 */ |
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161 | &_sys_ukn, /* 0x26 */ |
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162 | &_sys_ukn, /* 0x27 */ |
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163 | &_sys_ukn, /* 0x28 */ |
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164 | &_sys_ukn, /* 0x29 */ |
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165 | &_sys_ukn, /* 0x2A */ |
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166 | &_sys_ukn, /* 0x2B */ |
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167 | &_sys_ukn, /* 0x2C */ |
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168 | &_sys_ukn, /* 0x2D */ |
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169 | &_sys_ukn, /* 0x2E */ |
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170 | &_sys_ukn, /* 0x2F */ |
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171 | |
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172 | &_sys_nic_alloc, /* 0x30 */ |
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173 | &_sys_nic_start, /* 0x31 */ |
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174 | &_sys_nic_move, /* 0x32 */ |
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175 | &_sys_nic_stop, /* 0x33 */ |
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176 | &_sys_nic_stats, /* 0x34 */ |
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177 | &_sys_nic_clear, /* 0x35 */ |
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178 | &_sys_ukn, /* 0x36 */ |
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179 | &_sys_ukn, /* 0x37 */ |
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180 | &_sys_ukn, /* 0x38 */ |
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181 | &_sys_ukn, /* 0x39 */ |
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182 | &_sys_ukn, /* 0x3A */ |
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183 | &_sys_ukn, /* 0x3B */ |
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184 | &_sys_ukn, /* 0x3C */ |
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185 | &_sys_ukn, /* 0x3D */ |
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186 | &_sys_ukn, /* 0x3E */ |
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187 | &_sys_ukn, /* 0x3F */ |
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188 | }; |
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189 | |
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190 | |
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191 | ////////////////////////////////////////////////////////////////////////////// |
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192 | // TTY related syscall handlers |
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193 | ////////////////////////////////////////////////////////////////////////////// |
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194 | |
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195 | //////////////////// |
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196 | int _sys_tty_alloc() |
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197 | { |
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198 | // get a new TTY terminal index |
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199 | unsigned int channel = _atomic_increment( &_tty_channel_allocator, 1 ); |
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200 | |
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201 | if ( channel >= NB_TTY_CHANNELS ) |
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202 | { |
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203 | _printf("\n[GIET_ERROR] in _sys_tty_alloc() : not enough TTY channels\n"); |
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204 | return -1; |
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205 | } |
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206 | else |
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207 | { |
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208 | _set_context_slot( CTX_TTY_ID, channel ); |
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209 | return 0; |
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210 | } |
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211 | } |
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212 | |
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213 | ///////////////////////////////////////////////// |
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214 | int _sys_tty_write( const char* buffer, |
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215 | unsigned int length, // number of characters |
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216 | unsigned int channel) // channel index |
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217 | { |
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218 | unsigned int nwritten; |
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219 | |
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220 | // compute and check tty channel |
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221 | if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID); |
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222 | if( channel >= NB_TTY_CHANNELS ) return -1; |
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223 | |
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224 | // write string to TTY channel |
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225 | for (nwritten = 0; nwritten < length; nwritten++) |
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226 | { |
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227 | // check tty's status |
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228 | if ( _tty_get_register( channel, TTY_STATUS ) & 0x2 ) break; |
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229 | |
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230 | // write one byte |
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231 | if (buffer[nwritten] == '\n') |
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232 | { |
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233 | _tty_set_register( channel, TTY_WRITE, (unsigned int)'\r' ); |
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234 | } |
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235 | _tty_set_register( channel, TTY_WRITE, (unsigned int)buffer[nwritten] ); |
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236 | } |
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237 | |
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238 | return nwritten; |
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239 | } |
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240 | |
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241 | //////////////////////////////////////////////// |
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242 | int _sys_tty_read( char* buffer, |
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243 | unsigned int length, // unused |
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244 | unsigned int channel) // channel index |
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245 | { |
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246 | // compute and check tty channel |
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247 | if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID); |
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248 | if( channel >= NB_TTY_CHANNELS ) return -1; |
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249 | |
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250 | // read one character from TTY channel |
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251 | if (_tty_rx_full[channel] == 0) |
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252 | { |
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253 | return 0; |
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254 | } |
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255 | else |
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256 | { |
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257 | *buffer = _tty_rx_buf[channel]; |
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258 | _tty_rx_full[channel] = 0; |
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259 | return 1; |
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260 | } |
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261 | } |
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262 | |
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263 | /////////////////////////////////////////// |
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264 | int _sys_tty_get_lock( unsigned int channel, // unused |
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265 | unsigned int * save_sr_ptr ) |
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266 | { |
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267 | // check tty channel |
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268 | if( channel != 0 ) return 1; |
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269 | |
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270 | _it_disable( save_sr_ptr ); |
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271 | _sqt_lock_acquire( &_tty0_sqt_lock ); |
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272 | return 0; |
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273 | } |
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274 | |
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275 | /////////////////////////////////////////////// |
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276 | int _sys_tty_release_lock( unsigned int channel, |
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277 | unsigned int * save_sr_ptr ) |
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278 | { |
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279 | // check tty channel |
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280 | if( channel != 0 ) return 1; |
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281 | |
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282 | _sqt_lock_release( &_tty0_sqt_lock ); |
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283 | _it_restore( save_sr_ptr ); |
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284 | return 0; |
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285 | } |
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286 | |
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287 | ////////////////////////////////////////////////////////////////////////////// |
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288 | // TIM related syscall handlers |
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289 | ////////////////////////////////////////////////////////////////////////////// |
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290 | |
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291 | //////////////////// |
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292 | int _sys_tim_alloc() |
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293 | { |
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294 | // get a new timer index |
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295 | unsigned int channel = _atomic_increment( &_tim_channel_allocator, 1 ); |
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296 | |
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297 | if ( channel >= NB_TIM_CHANNELS ) |
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298 | { |
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299 | _printf("\n[GIET_ERROR] in _sys_tim_alloc() : not enough TIM channels\n"); |
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300 | return -1; |
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301 | } |
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302 | else |
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303 | { |
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304 | _set_context_slot( CTX_TIM_ID, channel ); |
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305 | return 0; |
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306 | } |
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307 | } |
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308 | |
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309 | ///////////////////////////////////////// |
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310 | int _sys_tim_start( unsigned int period ) |
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311 | { |
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312 | // get timer index |
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313 | unsigned int channel = _get_context_slot( CTX_TIM_ID ); |
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314 | if ( channel >= NB_TIM_CHANNELS ) |
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315 | { |
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316 | _printf("\n[GIET_ERROR] in _sys_tim_start() : not enough TIM channels\n"); |
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317 | return -1; |
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318 | } |
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319 | |
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320 | // start timer |
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321 | _timer_start( channel, period ); |
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322 | |
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323 | return 0; |
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324 | } |
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325 | |
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326 | /////////////////// |
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327 | int _sys_tim_stop() |
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328 | { |
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329 | // get timer index |
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330 | unsigned int channel = _get_context_slot( CTX_TIM_ID ); |
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331 | if ( channel >= NB_TIM_CHANNELS ) |
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332 | { |
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333 | _printf("\n[GIET_ERROR] in _sys_tim_stop() : illegal timer index\n"); |
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334 | return -1; |
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335 | } |
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336 | |
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337 | // stop timer |
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338 | _timer_stop( channel ); |
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339 | |
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340 | return 0; |
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341 | } |
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342 | |
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343 | ////////////////////////////////////////////////////////////////////////////// |
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344 | // NIC related syscall handlers |
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345 | ////////////////////////////////////////////////////////////////////////////// |
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346 | |
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347 | #define NIC_CONTAINER_SIZE 4096 |
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348 | |
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349 | //////////////////////////////////////// |
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350 | int _sys_nic_alloc( unsigned int is_rx, |
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351 | unsigned int xmax, |
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352 | unsigned int ymax ) |
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353 | { |
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354 | // check xmax / ymax parameters |
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355 | if ( xmax > X_SIZE ) |
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356 | { |
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357 | _printf("\n[GIET_ERROR] in _sys_nic_alloc() xmax argument too large\n"); |
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358 | return -1; |
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359 | } |
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360 | if ( ymax > Y_SIZE ) |
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361 | { |
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362 | _printf("\n[GIET_ERROR] in _sys_nic_alloc() ymax argument too large\n"); |
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363 | return -1; |
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364 | } |
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365 | |
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366 | // get a NIC_RX or NIC_TX channel index |
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367 | unsigned int nic_channel; |
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368 | unsigned int cma_channel; |
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369 | |
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370 | if ( is_rx ) nic_channel = _atomic_increment( &_nic_rx_channel_allocator, 1 ); |
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371 | else nic_channel = _atomic_increment( &_nic_tx_channel_allocator, 1 ); |
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372 | |
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373 | if ( (nic_channel >= NB_NIC_CHANNELS) ) |
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374 | { |
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375 | _printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough NIC channels\n"); |
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376 | return -1; |
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377 | } |
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378 | |
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379 | // get a CMA channel index |
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380 | cma_channel = _atomic_increment( &_cma_channel_allocator, 1 ); |
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381 | |
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382 | if ( cma_channel >= NB_CMA_CHANNELS ) |
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383 | { |
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384 | _printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough CMA channels\n"); |
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385 | return -1; |
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386 | } |
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387 | |
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388 | #if GIET_DEBUG_NIC |
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389 | unsigned int thread = _get_context_slot( CTX_TRDID_ID ); |
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390 | _printf("\n[GIET DEBUG NIC] Task %d enters sys_nic_alloc() at cycle %d\n" |
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391 | " nic_channel = %d / cma_channel = %d\n" |
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392 | thread , _get_proctime() , nic_channel , cma_channel ); |
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393 | #endif |
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394 | |
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395 | // register nic_index and cma_index in task context |
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396 | if ( is_rx ) |
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397 | { |
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398 | _set_context_slot( CTX_NIC_RX_ID, nic_channel ); |
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399 | _set_context_slot( CTX_CMA_RX_ID, cma_channel ); |
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400 | } |
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401 | else |
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402 | { |
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403 | _set_context_slot( CTX_NIC_TX_ID, nic_channel ); |
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404 | _set_context_slot( CTX_CMA_TX_ID, cma_channel ); |
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405 | } |
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406 | |
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407 | // physical addresses to be registered in the CMA registers |
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408 | unsigned long long nic_chbuf_pbase; // NIC chbuf physical address |
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409 | unsigned long long ker_chbuf_pbase; // kernel chbuf physical address |
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410 | |
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411 | // These variables are used for the various V2P translation |
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412 | unsigned int ptab = _get_context_slot(CTX_PTAB_ID); |
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413 | unsigned int ppn; |
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414 | unsigned int flags; |
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415 | unsigned int vaddr; |
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416 | |
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417 | // allocate one kernel container per cluster in the (xmax / ymax) mesh |
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418 | unsigned int cx; // cluster X coordinate |
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419 | unsigned int cy; // cluster Y coordinate |
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420 | unsigned int index; // container index in chbuf |
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421 | unsigned long long cont_paddr; // container physical address |
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422 | |
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423 | for ( cx = 0 ; cx < xmax ; cx++ ) |
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424 | { |
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425 | for ( cy = 0 ; cy < ymax ; cy++ ) |
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426 | { |
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427 | // compute index in chbuf |
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428 | index = (cx * ymax) + cy; |
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429 | |
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430 | // allocate the kernel container |
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431 | vaddr = (unsigned int)_remote_malloc( NIC_CONTAINER_SIZE, cx, cy ); |
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432 | |
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433 | if ( vaddr == 0 ) // not enough kernel heap memory in cluster[cx,cy] |
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434 | { |
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435 | _printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough kenel heap" |
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436 | " in cluster[%d,%d]\n", cx, cy ); |
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437 | return -1; |
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438 | } |
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439 | |
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440 | // compute container physical address |
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441 | _v2p_translate( (page_table_t*)ptab, |
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442 | vaddr>>12, |
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443 | &ppn, |
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444 | &flags ); |
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445 | cont_paddr = (((unsigned long long)ppn) << 12) | (vaddr & 0x00000FFF); |
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446 | |
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447 | // initialize chbuf entry |
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448 | if ( is_rx ) _nic_rx_chbuf[nic_channel].buffer[index].desc = cont_paddr; |
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449 | else _nic_tx_chbuf[nic_channel].buffer[index].desc = cont_paddr; |
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450 | |
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451 | #if GIET_DEBUG_NIC |
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452 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start()" |
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453 | " allocates container in cluster[%d,%d] : vaddr = %x / paddr = %l\n", |
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454 | thread , cx , cy , vaddr , cont_paddr ); |
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455 | #endif |
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456 | } |
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457 | } |
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458 | |
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459 | // complete kernel chbuf initialisation |
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460 | if ( is_rx ) |
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461 | { |
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462 | _nic_rx_chbuf[nic_channel].xmax = xmax; |
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463 | _nic_rx_chbuf[nic_channel].ymax = ymax; |
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464 | } |
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465 | else |
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466 | { |
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467 | _nic_tx_chbuf[nic_channel].xmax = xmax; |
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468 | _nic_tx_chbuf[nic_channel].ymax = ymax; |
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469 | } |
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470 | |
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471 | // compute the NIC chbuf descriptor physical address |
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472 | unsigned int offset; |
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473 | if ( is_rx ) offset = 0x4000; |
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474 | else offset = 0x4080; |
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475 | nic_chbuf_pbase = (((unsigned long long)((X_IO << Y_WIDTH) + Y_IO))<<32) | |
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476 | (SEG_NIC_BASE + (nic_channel<<15) + offset); |
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477 | |
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478 | #if GIET_DEBUG_NIC |
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479 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start()" |
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480 | " get NIC chbuf : paddr = %l\n", |
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481 | thread , nic_chbuf_pbase ); |
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482 | #endif |
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483 | |
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484 | // compute the kernel chbuf descriptor physical address |
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485 | if ( is_rx ) vaddr = (unsigned int)( &_nic_rx_chbuf[nic_channel] ); |
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486 | else vaddr = (unsigned int)( &_nic_tx_chbuf[nic_channel] ); |
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487 | _v2p_translate( (page_table_t*)ptab, |
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488 | vaddr>>12, |
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489 | &ppn, |
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490 | &flags ); |
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491 | ker_chbuf_pbase = (((unsigned long long)ppn) << 12) | (vaddr & 0x00000FFF); |
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492 | |
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493 | #if GIET_DEBUG_NIC |
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494 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start()" |
---|
495 | " get kernel chbuf : vaddr = %x / paddr = %l\n", |
---|
496 | thread , vaddr , ker_chbuf_pbase ); |
---|
497 | #endif |
---|
498 | |
---|
499 | // sync the kernel chbuf in L2 after write in L2 |
---|
500 | _mmc_sync( ker_chbuf_pbase, sizeof( nic_chbuf_t ) ); |
---|
501 | |
---|
502 | // initializes CMA registers defining the source & destination chbufs |
---|
503 | if ( is_rx ) // NIC to kernel |
---|
504 | { |
---|
505 | _cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(nic_chbuf_pbase) ); |
---|
506 | _cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(nic_chbuf_pbase>>32) ); |
---|
507 | _cma_set_register( cma_channel, CHBUF_SRC_NBUFS, 2 ); |
---|
508 | _cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(ker_chbuf_pbase) ); |
---|
509 | _cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(ker_chbuf_pbase>>32) ); |
---|
510 | _cma_set_register( cma_channel, CHBUF_DST_NBUFS, xmax * ymax ); |
---|
511 | } |
---|
512 | else // kernel to NIC |
---|
513 | { |
---|
514 | _cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(ker_chbuf_pbase) ); |
---|
515 | _cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(ker_chbuf_pbase>>32) ); |
---|
516 | _cma_set_register( cma_channel, CHBUF_SRC_NBUFS, xmax * ymax ); |
---|
517 | _cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(nic_chbuf_pbase) ); |
---|
518 | _cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(nic_chbuf_pbase>>32) ); |
---|
519 | _cma_set_register( cma_channel, CHBUF_DST_NBUFS, 2 ); |
---|
520 | } |
---|
521 | |
---|
522 | #if GIET_DEBUG_NIC |
---|
523 | _printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_alloc() at cycle %d\n", |
---|
524 | thread, _get_proctime() ); |
---|
525 | #endif |
---|
526 | |
---|
527 | return nic_channel; |
---|
528 | } // end _sys_nic_alloc() |
---|
529 | |
---|
530 | |
---|
531 | //////////////////////////////////////// |
---|
532 | int _sys_nic_start( unsigned int is_rx, |
---|
533 | unsigned int channel ) |
---|
534 | { |
---|
535 | unsigned int nic_channel; |
---|
536 | unsigned int cma_channel; |
---|
537 | |
---|
538 | // get NIC channel index and CMA channel index from task context |
---|
539 | if ( is_rx ) |
---|
540 | { |
---|
541 | nic_channel = _get_context_slot( CTX_NIC_RX_ID ); |
---|
542 | cma_channel = _get_context_slot( CTX_CMA_RX_ID ); |
---|
543 | } |
---|
544 | else |
---|
545 | { |
---|
546 | nic_channel = _get_context_slot( CTX_NIC_TX_ID ); |
---|
547 | cma_channel = _get_context_slot( CTX_CMA_TX_ID ); |
---|
548 | } |
---|
549 | |
---|
550 | #if GIET_DEBUG_NIC |
---|
551 | unsigned int thread = _get_context_slot( CTX_TRDID_ID ); |
---|
552 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start() at cycle %d" |
---|
553 | " get NIC channel = %d / CMA channel = %d\n", |
---|
554 | thread, _get_proctime(), nic_channel, cma_channel ); |
---|
555 | #endif |
---|
556 | |
---|
557 | // check NIC and CMA channels index |
---|
558 | if ( nic_channel != channel ) |
---|
559 | { |
---|
560 | _printf("\n[GIET_ERROR] in _sys_nic_start(): illegal NIC channel\n"); |
---|
561 | return -1; |
---|
562 | } |
---|
563 | if ( cma_channel >= NB_CMA_CHANNELS ) |
---|
564 | { |
---|
565 | _printf("\n[GIET_ERROR] in _sys_nic_start(): illegal CMA channel\n"); |
---|
566 | return -1; |
---|
567 | } |
---|
568 | |
---|
569 | // start CMA transfer |
---|
570 | _cma_set_register( cma_channel, CHBUF_BUF_SIZE , NIC_CONTAINER_SIZE ); |
---|
571 | _cma_set_register( cma_channel, CHBUF_PERIOD , 0 ); // OUT_OF_ORDER |
---|
572 | _cma_set_register( cma_channel, CHBUF_RUN , 1 ); |
---|
573 | |
---|
574 | // activates NIC channel |
---|
575 | _nic_channel_start( nic_channel, is_rx, GIET_NIC_MAC4, GIET_NIC_MAC2 ); |
---|
576 | |
---|
577 | #if GIET_DEBUG_NIC |
---|
578 | _printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_start() at cycle %d\n", |
---|
579 | thread , _get_proctime() ); |
---|
580 | #endif |
---|
581 | |
---|
582 | return 0; |
---|
583 | } // end _sys_nic_start() |
---|
584 | |
---|
585 | |
---|
586 | ////////////////////////////////////// |
---|
587 | int _sys_nic_move( unsigned int is_rx, |
---|
588 | unsigned int channel, |
---|
589 | void* buffer ) |
---|
590 | { |
---|
591 | |
---|
592 | #if GIET_DEBUG_NIC |
---|
593 | unsigned int thread = _get_context_slot( CTX_TRDID_ID ); |
---|
594 | _printf("\n[GIET DEBUG NIC] Task %d enters _sys_nic_move() at cycle %d\n", |
---|
595 | thread , _get_proctime() ); |
---|
596 | #endif |
---|
597 | |
---|
598 | // check NIC channel index |
---|
599 | if ( channel >= NB_NIC_CHANNELS ) |
---|
600 | { |
---|
601 | _printf("\n[GIET_ERROR] in _sys_nic_move() : illegal NIC channel index\n"); |
---|
602 | return -1; |
---|
603 | } |
---|
604 | |
---|
605 | // get kernel chbuf virtual address |
---|
606 | nic_chbuf_t* chbuf; |
---|
607 | if ( is_rx ) chbuf = &_nic_rx_chbuf[channel]; |
---|
608 | else chbuf = &_nic_tx_chbuf[channel]; |
---|
609 | |
---|
610 | // get xmax / ymax parameters |
---|
611 | unsigned int xmax = chbuf->xmax; |
---|
612 | unsigned int ymax = chbuf->ymax; |
---|
613 | |
---|
614 | // get cluster coordinates for the processor running the calling task |
---|
615 | unsigned int procid = _get_procid(); |
---|
616 | unsigned int cx = procid >> (Y_WIDTH + P_WIDTH); |
---|
617 | unsigned int cy = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1); |
---|
618 | |
---|
619 | // check processor coordinates / (xmax,ymax) |
---|
620 | if ( cx >= xmax ) |
---|
621 | { |
---|
622 | _printf("\n[GIET_ERROR] in _sys_nic_move() : processor X coordinate = %d" |
---|
623 | " / xmax = %d\n", cx , xmax ); |
---|
624 | return -1; |
---|
625 | } |
---|
626 | if ( cy >= ymax ) |
---|
627 | { |
---|
628 | _printf("\n[GIET_ERROR] in _sys_nic_move() : processor Y coordinate = %d" |
---|
629 | " / ymax = %d\n", cy , ymax ); |
---|
630 | return -1; |
---|
631 | } |
---|
632 | |
---|
633 | unsigned long long user_buffer_paddr; // user buffer physical address |
---|
634 | unsigned long long kernel_buffer_paddr; // kernel buffer physical address |
---|
635 | unsigned long long kernel_chbuf_paddr; // kernel chbuf physical address |
---|
636 | unsigned long long buffer_desc; // kernel buffer descriptor |
---|
637 | unsigned long long buffer_desc_paddr; // kernel buffer descriptor physical address |
---|
638 | unsigned int index; // kernel buffer index in chbuf |
---|
639 | |
---|
640 | // The following variables are used for V2P translation |
---|
641 | unsigned int ptab = _get_context_slot( CTX_PTAB_ID ); |
---|
642 | unsigned int ppn; |
---|
643 | unsigned int flags; |
---|
644 | unsigned int vaddr; |
---|
645 | |
---|
646 | // Compute user buffer physical address and check access rights |
---|
647 | vaddr = (unsigned int)buffer; |
---|
648 | _v2p_translate( (page_table_t*)ptab, |
---|
649 | vaddr>>12, |
---|
650 | &ppn, |
---|
651 | &flags ); |
---|
652 | |
---|
653 | if ( (flags & PTE_U) == 0 ) |
---|
654 | { |
---|
655 | _printf("\n[GIET ERROR] in _sys_nic_tx_move() : illegal buffer address\n"); |
---|
656 | return -1; |
---|
657 | } |
---|
658 | user_buffer_paddr = ((unsigned long long)ppn << 12) | (vaddr & 0x00000FFF); |
---|
659 | |
---|
660 | #if GIET_DEBUG_NIC |
---|
661 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() get user buffer : paddr = %l\n", |
---|
662 | thread, user_buffer_paddr ); |
---|
663 | #endif |
---|
664 | |
---|
665 | // compute kernel chbuf physical address (required for sync) |
---|
666 | vaddr = (unsigned int)chbuf; |
---|
667 | _v2p_translate( (page_table_t*)ptab, |
---|
668 | vaddr>>12, |
---|
669 | &ppn, |
---|
670 | &flags ); |
---|
671 | kernel_chbuf_paddr = ((unsigned long long)ppn << 12) | (vaddr & 0x00000FFF); |
---|
672 | |
---|
673 | // poll local kernel container status until success |
---|
674 | while ( 1 ) |
---|
675 | { |
---|
676 | // compute buffer index and buffer descriptor paddr |
---|
677 | index = (ymax * cx) + cy; |
---|
678 | buffer_desc_paddr = kernel_chbuf_paddr + (index<<6); |
---|
679 | |
---|
680 | // inval buffer descriptor in L2 before read in L2 |
---|
681 | _mmc_inval( buffer_desc_paddr , 8 ); |
---|
682 | buffer_desc = chbuf->buffer[index].desc; |
---|
683 | |
---|
684 | #if GIET_DEBUG_NIC |
---|
685 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() read buffer descriptor %d\n" |
---|
686 | " at cycle = %d / paddr = %l / buffer descriptor = %l\n", |
---|
687 | thread, index, _get_proctime(), buffer_desc_paddr, buffer_desc ); |
---|
688 | #endif |
---|
689 | |
---|
690 | // test buffer status and break if found |
---|
691 | if ( ( is_rx != 0 ) && (buffer_desc >> 63) == 1 ) break; |
---|
692 | if ( ( is_rx == 0 ) && (buffer_desc >> 63) == 0 ) break; |
---|
693 | } |
---|
694 | |
---|
695 | // compute kernel buffer physical address |
---|
696 | kernel_buffer_paddr = buffer_desc & 0x0000FFFFFFFFFFFFULL; |
---|
697 | |
---|
698 | // move one container |
---|
699 | if ( is_rx ) // RX transfer |
---|
700 | { |
---|
701 | // inval kernel buffer in L2 before read in L2 |
---|
702 | _mmc_inval( kernel_buffer_paddr, NIC_CONTAINER_SIZE ); |
---|
703 | |
---|
704 | // transfer data from kernel buffer to user buffer |
---|
705 | _physical_memcpy( user_buffer_paddr, |
---|
706 | kernel_buffer_paddr, |
---|
707 | NIC_CONTAINER_SIZE ); |
---|
708 | #if GIET_DEBUG_NIC |
---|
709 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer " |
---|
710 | "kernel buffer %l to user buffer %l at cycle %d\n", |
---|
711 | thread , kernel_buffer_paddr , user_buffer_paddr , _get_proctime() ); |
---|
712 | #endif |
---|
713 | |
---|
714 | } |
---|
715 | else // TX transfer |
---|
716 | { |
---|
717 | // transfer data from user buffer to kernel buffer |
---|
718 | _physical_memcpy( kernel_buffer_paddr, |
---|
719 | user_buffer_paddr, |
---|
720 | NIC_CONTAINER_SIZE ); |
---|
721 | |
---|
722 | // sync kernel buffer in L2 after write in L2 |
---|
723 | _mmc_sync( kernel_buffer_paddr, NIC_CONTAINER_SIZE ); |
---|
724 | |
---|
725 | #if GIET_DEBUG_NIC |
---|
726 | _printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer " |
---|
727 | "user buffer %l to kernel buffer %l at cycle %d\n", |
---|
728 | thread , user_buffer_paddr , kernel_buffer_paddr , _get_proctime() ); |
---|
729 | #endif |
---|
730 | |
---|
731 | } |
---|
732 | |
---|
733 | // update kernel chbuf status |
---|
734 | if ( is_rx ) chbuf->buffer[index].desc = kernel_buffer_paddr & 0x0000FFFFFFFFFFFFULL; |
---|
735 | else chbuf->buffer[index].desc = kernel_buffer_paddr | 0x8000000000000000ULL; |
---|
736 | |
---|
737 | // sync kernel chbuf in L2 after write in L2 |
---|
738 | _mmc_sync( kernel_chbuf_paddr + (index<<6) , 8 ); |
---|
739 | |
---|
740 | #if GIET_DEBUG_NIC |
---|
741 | _printf("\n[GIET DEBUG NIC] Task %d get buffer %d and exit _sys_nic_move() at cycle %d\n", |
---|
742 | thread , index , _get_proctime() ); |
---|
743 | #endif |
---|
744 | |
---|
745 | return 0; |
---|
746 | } // end _sys_nic_move() |
---|
747 | |
---|
748 | |
---|
749 | //////////////////////////////////////// |
---|
750 | int _sys_nic_stop( unsigned int is_rx, |
---|
751 | unsigned int channel ) |
---|
752 | { |
---|
753 | unsigned int nic_channel; |
---|
754 | unsigned int cma_channel; |
---|
755 | |
---|
756 | // get NIC channel index and CMA channel index |
---|
757 | if ( is_rx ) |
---|
758 | { |
---|
759 | nic_channel = _get_context_slot( CTX_NIC_RX_ID ); |
---|
760 | cma_channel = _get_context_slot( CTX_CMA_RX_ID ); |
---|
761 | } |
---|
762 | else |
---|
763 | { |
---|
764 | nic_channel = _get_context_slot( CTX_NIC_TX_ID ); |
---|
765 | cma_channel = _get_context_slot( CTX_CMA_TX_ID ); |
---|
766 | } |
---|
767 | |
---|
768 | // check NIC and CMA channels index |
---|
769 | if ( nic_channel != channel ) |
---|
770 | { |
---|
771 | _printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal NIC channel\n"); |
---|
772 | return -1; |
---|
773 | } |
---|
774 | if ( cma_channel >= NB_CMA_CHANNELS ) |
---|
775 | { |
---|
776 | _printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal CMA channel\n"); |
---|
777 | return -1; |
---|
778 | } |
---|
779 | |
---|
780 | // desactivates the NIC channel |
---|
781 | _nic_channel_stop( nic_channel, is_rx ); |
---|
782 | |
---|
783 | // desactivates the CMA channel |
---|
784 | _cma_set_register( cma_channel, CHBUF_RUN , 0 ); |
---|
785 | |
---|
786 | return 0; |
---|
787 | } // end _sys_nic_stop() |
---|
788 | |
---|
789 | //////////////////////////////////////// |
---|
790 | int _sys_nic_clear( unsigned int is_rx, |
---|
791 | unsigned int channel ) |
---|
792 | { |
---|
793 | unsigned int nic_channel; |
---|
794 | |
---|
795 | // get NIC channel |
---|
796 | if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID ); |
---|
797 | else nic_channel = _get_context_slot( CTX_NIC_TX_ID ); |
---|
798 | |
---|
799 | if ( nic_channel != channel ) |
---|
800 | { |
---|
801 | _printf("\n[GIET_ERROR] in _sys_nic_clear(): illegal NIC channel\n"); |
---|
802 | return -1; |
---|
803 | } |
---|
804 | |
---|
805 | if ( is_rx ) |
---|
806 | { |
---|
807 | _nic_set_global_register( NIC_G_NPKT_RX_G2S_RECEIVED , 0 ); |
---|
808 | _nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL , 0 ); |
---|
809 | _nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_BIG , 0 ); |
---|
810 | _nic_set_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL , 0 ); |
---|
811 | _nic_set_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL , 0 ); |
---|
812 | _nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_RECEIVED , 0 ); |
---|
813 | _nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST , 0 ); |
---|
814 | _nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL , 0 ); |
---|
815 | _nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL , 0 ); |
---|
816 | } |
---|
817 | else |
---|
818 | { |
---|
819 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED , 0 ); |
---|
820 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TRANSMIT , 0 ); |
---|
821 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG , 0 ); |
---|
822 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL , 0 ); |
---|
823 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL , 0 ); |
---|
824 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS , 0 ); |
---|
825 | _nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST , 0 ); |
---|
826 | } |
---|
827 | return 0; |
---|
828 | } // en _sys_nic_clear() |
---|
829 | |
---|
830 | //////////////////////////////////////// |
---|
831 | int _sys_nic_stats( unsigned int is_rx, |
---|
832 | unsigned int channel ) |
---|
833 | { |
---|
834 | unsigned int nic_channel; |
---|
835 | |
---|
836 | // get NIC channel |
---|
837 | if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID ); |
---|
838 | else nic_channel = _get_context_slot( CTX_NIC_TX_ID ); |
---|
839 | |
---|
840 | if ( nic_channel != channel ) |
---|
841 | { |
---|
842 | _printf("\n[GIET_ERROR] in _sys_nic_stats(): illegal NIC channel\n"); |
---|
843 | return -1; |
---|
844 | } |
---|
845 | |
---|
846 | if ( is_rx ) |
---|
847 | { |
---|
848 | unsigned int received = _nic_get_global_register( NIC_G_NPKT_RX_G2S_RECEIVED ); |
---|
849 | unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL ); |
---|
850 | unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_BIG ); |
---|
851 | unsigned int fifo_full = _nic_get_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL ); |
---|
852 | unsigned int crc_fail = _nic_get_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL ); |
---|
853 | unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST ); |
---|
854 | unsigned int dst_fail = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL ); |
---|
855 | unsigned int ch_full = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL ); |
---|
856 | |
---|
857 | _printf("\n### Network Controller RX Statistics ###\n" |
---|
858 | "- packets received : %d\n" |
---|
859 | "- too small : %d\n" |
---|
860 | "- too big : %d\n" |
---|
861 | "- fifo full : %d\n" |
---|
862 | "- crc fail : %d\n" |
---|
863 | "- dst mac fail : %d\n" |
---|
864 | "- channel full : %d\n" |
---|
865 | "- broadcast : %d\n", |
---|
866 | received, |
---|
867 | too_small, |
---|
868 | too_big, |
---|
869 | fifo_full, |
---|
870 | crc_fail, |
---|
871 | dst_fail, |
---|
872 | ch_full, |
---|
873 | broadcast ); |
---|
874 | } |
---|
875 | else |
---|
876 | { |
---|
877 | unsigned int received = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED ); |
---|
878 | unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG ); |
---|
879 | unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL ); |
---|
880 | unsigned int src_fail = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL ); |
---|
881 | unsigned int bypass = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS ); |
---|
882 | unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST ); |
---|
883 | |
---|
884 | _printf("\n### Network Controller TX Statistics ###\n" |
---|
885 | "- packets received : %d\n" |
---|
886 | "- too small : %d\n" |
---|
887 | "- too big : %d\n" |
---|
888 | "- src mac fail : %d\n" |
---|
889 | "- bypass : %d\n" |
---|
890 | "- broadcast : %d\n", |
---|
891 | received, |
---|
892 | too_big, |
---|
893 | too_small, |
---|
894 | src_fail, |
---|
895 | bypass, |
---|
896 | broadcast ); |
---|
897 | } |
---|
898 | return 0; |
---|
899 | } // end _sys_nic_stats() |
---|
900 | |
---|
901 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
902 | // FBF related syscall handlers |
---|
903 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
904 | |
---|
905 | ///////////////////////////////////////////// |
---|
906 | int _sys_fbf_sync_write( unsigned int offset, |
---|
907 | void* buffer, |
---|
908 | unsigned int length ) |
---|
909 | { |
---|
910 | char* fbf_address = (char *)SEG_FBF_BASE + offset; |
---|
911 | memcpy( fbf_address, buffer, length); |
---|
912 | |
---|
913 | return 0; |
---|
914 | } |
---|
915 | |
---|
916 | ///////////////////////////////////////////// |
---|
917 | int _sys_fbf_sync_read( unsigned int offset, |
---|
918 | void* buffer, |
---|
919 | unsigned int length ) |
---|
920 | { |
---|
921 | char* fbf_address = (char *)SEG_FBF_BASE + offset; |
---|
922 | memcpy( buffer, fbf_address, length); |
---|
923 | |
---|
924 | return 0; |
---|
925 | } |
---|
926 | |
---|
927 | //////////////////////// |
---|
928 | int _sys_fbf_cma_alloc() |
---|
929 | { |
---|
930 | // get a new CMA channel index |
---|
931 | unsigned int channel = _atomic_increment( &_cma_channel_allocator, 1 ); |
---|
932 | |
---|
933 | if ( channel >= NB_CMA_CHANNELS ) |
---|
934 | { |
---|
935 | _printf("\n[GIET ERROR] in _sys_fbf_cma_alloc() : not enough CMA channels\n"); |
---|
936 | return -1; |
---|
937 | } |
---|
938 | else |
---|
939 | { |
---|
940 | _set_context_slot( CTX_CMA_FB_ID, channel ); |
---|
941 | return 0; |
---|
942 | } |
---|
943 | } // end sys_fbf_cma_alloc() |
---|
944 | |
---|
945 | //////////////////////////////////////////// |
---|
946 | int _sys_fbf_cma_start( void* vbase0, |
---|
947 | void* vbase1, |
---|
948 | unsigned int length ) |
---|
949 | { |
---|
950 | #if NB_CMA_CHANNELS > 0 |
---|
951 | |
---|
952 | unsigned int ptab; // page table virtual address |
---|
953 | unsigned int vaddr; // virtual address |
---|
954 | unsigned int flags; // protection flags |
---|
955 | unsigned int ppn; // physical page number |
---|
956 | |
---|
957 | // get channel index |
---|
958 | unsigned int channel = _get_context_slot( CTX_CMA_FB_ID ); |
---|
959 | |
---|
960 | if ( channel >= NB_CMA_CHANNELS ) |
---|
961 | { |
---|
962 | _printf("\n[GIET ERROR] in _fbf_cma_start() : CMA channel index too large\n"); |
---|
963 | return -1; |
---|
964 | } |
---|
965 | |
---|
966 | #if GIET_DEBUG_FBF_CMA |
---|
967 | _printf("\n[FBF_CMA DEBUG] enters _sys_fbf_cma_start()\n" |
---|
968 | " - channel = %d\n" |
---|
969 | " - buf0 vbase = %x\n" |
---|
970 | " - buf1 vbase = %x\n" |
---|
971 | " - buffer size = %x\n", |
---|
972 | channel, |
---|
973 | (unsigned int)vbase0, |
---|
974 | (unsigned int)vbase1, |
---|
975 | length ); |
---|
976 | #endif |
---|
977 | |
---|
978 | // checking user buffers virtual addresses and length alignment |
---|
979 | if ( ((unsigned int)vbase0 & 0x3) || ((unsigned int)vbase1 & 0x3) || (length & 0x3) ) |
---|
980 | { |
---|
981 | _printf("\n[GIET ERROR] in _fbf_cma_start() : user buffer not word aligned\n"); |
---|
982 | return -1; |
---|
983 | } |
---|
984 | |
---|
985 | // get page table virtual address |
---|
986 | ptab = _get_context_slot(CTX_PTAB_ID); |
---|
987 | |
---|
988 | // compute frame buffer physical address and initialize _fbf_chbuf[channel] |
---|
989 | vaddr = ((unsigned int)SEG_FBF_BASE); |
---|
990 | _v2p_translate( (page_table_t*) ptab, |
---|
991 | (vaddr >> 12), |
---|
992 | &ppn, |
---|
993 | &flags ); |
---|
994 | |
---|
995 | _fbf_chbuf[channel].fbf.desc = ((paddr_t)ppn << 12) | (vaddr & 0x00000FFF); |
---|
996 | |
---|
997 | // Compute user buffer 0 physical addresses and intialize _fbf_chbuf[channel] |
---|
998 | vaddr = (unsigned int)vbase0; |
---|
999 | _v2p_translate( (page_table_t*) ptab, |
---|
1000 | (vaddr >> 12), |
---|
1001 | &ppn, |
---|
1002 | &flags ); |
---|
1003 | if ((flags & PTE_U) == 0) |
---|
1004 | { |
---|
1005 | _printf("\n[GIET ERROR] in _fbf_cma_start() : user buffer 0 not in user space\n"); |
---|
1006 | return -1; |
---|
1007 | } |
---|
1008 | |
---|
1009 | _fbf_chbuf[channel].buf0.desc = ((paddr_t)ppn << 12) | (vaddr & 0x00000FFF); |
---|
1010 | |
---|
1011 | // Compute user buffer 1 physical addresses and intialize _fbf_chbuf[channel] |
---|
1012 | vaddr = (unsigned int)vbase1; |
---|
1013 | _v2p_translate( (page_table_t*) ptab, |
---|
1014 | (vaddr >> 12), |
---|
1015 | &ppn, |
---|
1016 | &flags ); |
---|
1017 | if ((flags & PTE_U) == 0) |
---|
1018 | { |
---|
1019 | _printf("\n[GIET ERROR] in _fbf_cma_start() : user buffer 1 not in user space\n"); |
---|
1020 | return -1; |
---|
1021 | } |
---|
1022 | |
---|
1023 | _fbf_chbuf[channel].buf1.desc = ((paddr_t)ppn << 12) | (vaddr & 0x00000FFF); |
---|
1024 | |
---|
1025 | // initializes buffer length |
---|
1026 | _fbf_chbuf[channel].length = length; |
---|
1027 | |
---|
1028 | // Compute and register physical adress of the fbf_chbuf descriptor |
---|
1029 | vaddr = (unsigned int)(&_fbf_chbuf[channel]); |
---|
1030 | _v2p_translate( (page_table_t*) ptab, |
---|
1031 | (vaddr >> 12), |
---|
1032 | &ppn, |
---|
1033 | &flags ); |
---|
1034 | |
---|
1035 | _fbf_chbuf_paddr[channel] = (((paddr_t)ppn) << 12) | (vaddr & 0x00000FFF); |
---|
1036 | |
---|
1037 | if ( USE_IOB ) |
---|
1038 | { |
---|
1039 | // SYNC request for fbf_chbuf descriptor |
---|
1040 | _mmc_sync( _fbf_chbuf_paddr[channel] , sizeof( fbf_chbuf_t ) ); |
---|
1041 | } |
---|
1042 | |
---|
1043 | #if GIET_DEBUG_FBF_CMA |
---|
1044 | _printf(" - fbf pbase = %l\n" |
---|
1045 | " - buf0 pbase = %l\n" |
---|
1046 | " - buf1 pbase = %l\n" |
---|
1047 | " - chbuf pbase = %l\n", |
---|
1048 | _fbf_chbuf[channel].fbf.desc, |
---|
1049 | _fbf_chbuf[channel].buf0.desc, |
---|
1050 | _fbf_chbuf[channel].buf1.desc, |
---|
1051 | _fbf_chbuf_paddr[channel] ); |
---|
1052 | #endif |
---|
1053 | |
---|
1054 | // start CMA transfer |
---|
1055 | unsigned long long paddr = _fbf_chbuf_paddr[channel]; |
---|
1056 | unsigned int src_chbuf_paddr_lsb = (unsigned int)(paddr & 0xFFFFFFFF); |
---|
1057 | unsigned int src_chbuf_paddr_ext = (unsigned int)(paddr >> 32); |
---|
1058 | unsigned int dst_chbuf_paddr_lsb = src_chbuf_paddr_lsb + 128; |
---|
1059 | unsigned int dst_chbuf_paddr_ext = src_chbuf_paddr_ext; |
---|
1060 | |
---|
1061 | _cma_set_register( channel, CHBUF_SRC_DESC , src_chbuf_paddr_lsb ); |
---|
1062 | _cma_set_register( channel, CHBUF_SRC_EXT , src_chbuf_paddr_ext ); |
---|
1063 | _cma_set_register( channel, CHBUF_SRC_NBUFS, 2 ); |
---|
1064 | _cma_set_register( channel, CHBUF_DST_DESC , dst_chbuf_paddr_lsb ); |
---|
1065 | _cma_set_register( channel, CHBUF_DST_EXT , dst_chbuf_paddr_ext ); |
---|
1066 | _cma_set_register( channel, CHBUF_DST_NBUFS, 1 ); |
---|
1067 | _cma_set_register( channel, CHBUF_BUF_SIZE , length ); |
---|
1068 | _cma_set_register( channel, CHBUF_PERIOD , 300 ); |
---|
1069 | _cma_set_register( channel, CHBUF_RUN , 1 ); |
---|
1070 | |
---|
1071 | return 0; |
---|
1072 | |
---|
1073 | #else |
---|
1074 | |
---|
1075 | _printf("\n[GIET ERROR] in _sys_fbf_cma_start() : NB_CMA_CHANNELS = 0\n"); |
---|
1076 | return -1; |
---|
1077 | |
---|
1078 | #endif |
---|
1079 | } // end _sys_fbf_cma_start() |
---|
1080 | |
---|
1081 | ///////////////////////////////////////////////////// |
---|
1082 | int _sys_fbf_cma_display( unsigned int buffer_index ) |
---|
1083 | { |
---|
1084 | #if NB_CMA_CHANNELS > 0 |
---|
1085 | |
---|
1086 | volatile unsigned int full = 1; |
---|
1087 | |
---|
1088 | // get channel index |
---|
1089 | unsigned int channel = _get_context_slot( CTX_CMA_FB_ID ); |
---|
1090 | |
---|
1091 | if ( channel >= NB_CMA_CHANNELS ) |
---|
1092 | { |
---|
1093 | _printf("\n[GIET ERROR] in _sys_fbf_cma_display() : " |
---|
1094 | "CMA channel index too large\n"); |
---|
1095 | return -1; |
---|
1096 | } |
---|
1097 | |
---|
1098 | // get fbf_chbuf descriptor pointer |
---|
1099 | fbf_chbuf_t* pdesc = &_fbf_chbuf[channel]; |
---|
1100 | |
---|
1101 | #if GIET_DEBUG_FBF_CMA |
---|
1102 | _printf("\n[FBF_CMA DEBUG] enters _sys_fb_cma_display()\n" |
---|
1103 | " - cma channel = %d\n" |
---|
1104 | " - buffer index = %d\n" |
---|
1105 | " - buf0_desc value = %l\n" |
---|
1106 | " - buf1_desc value = %l\n" |
---|
1107 | " - fbf_desc value = %l\n", |
---|
1108 | channel , buffer_index, |
---|
1109 | _fbf_chbuf[channel].buf0.desc, |
---|
1110 | _fbf_chbuf[channel].buf1.desc, |
---|
1111 | _fbf_chbuf[channel].fbf.desc ); |
---|
1112 | #endif |
---|
1113 | |
---|
1114 | if ( buffer_index == 0 ) // user buffer 0 |
---|
1115 | { |
---|
1116 | // INVAL L1 and L2 cache copies of user buffer descriptor, |
---|
1117 | // because it has been modified in RAM by the CMA component |
---|
1118 | _dcache_buf_invalidate( (unsigned int)pdesc , sizeof(buffer_descriptor_t) ); |
---|
1119 | _mmc_inval( _fbf_chbuf_paddr[channel] , sizeof(buffer_descriptor_t) ); |
---|
1120 | |
---|
1121 | // waiting user buffer released by the CMA component) |
---|
1122 | while ( full ) |
---|
1123 | { |
---|
1124 | full = (unsigned int)(pdesc->buf0.desc >> 63); |
---|
1125 | } |
---|
1126 | |
---|
1127 | // SYNC request for the user buffer, because |
---|
1128 | // it will be read from XRAM by the CMA component |
---|
1129 | _mmc_sync( pdesc->buf0.desc , pdesc->length ); |
---|
1130 | |
---|
1131 | // set user buffer status |
---|
1132 | pdesc->buf0.desc = pdesc->buf0.desc | 0x8000000000000000ULL; |
---|
1133 | |
---|
1134 | // reset fbf buffer status |
---|
1135 | pdesc->fbf.desc = pdesc->fbf.desc & 0x7FFFFFFFFFFFFFFFULL; |
---|
1136 | |
---|
1137 | // SYNC request, because these buffer descriptors |
---|
1138 | // will be read from XRAM by the CMA component |
---|
1139 | _mmc_sync( _fbf_chbuf_paddr[channel] , sizeof(fbf_chbuf_t) ); |
---|
1140 | } |
---|
1141 | else // user buffer 1 |
---|
1142 | { |
---|
1143 | // INVAL L1 and L2 cache copies of user buffer descriptor, |
---|
1144 | // because it has been modified in RAM by the CMA component |
---|
1145 | _dcache_buf_invalidate( (unsigned int)pdesc + 64, sizeof(buffer_descriptor_t) ); |
---|
1146 | _mmc_inval( _fbf_chbuf_paddr[channel] + 64, sizeof(buffer_descriptor_t) ); |
---|
1147 | |
---|
1148 | // waiting user buffer released by the CMA component) |
---|
1149 | while ( full ) |
---|
1150 | { |
---|
1151 | full = (unsigned int)(pdesc->buf1.desc >> 63); |
---|
1152 | } |
---|
1153 | |
---|
1154 | // SYNC request for the user buffer, because |
---|
1155 | // it will be read from XRAM by the CMA component |
---|
1156 | _mmc_sync( pdesc->buf1.desc , pdesc->length ); |
---|
1157 | |
---|
1158 | // set user buffer status |
---|
1159 | pdesc->buf1.desc = pdesc->buf1.desc | 0x8000000000000000ULL; |
---|
1160 | |
---|
1161 | // reset fbf buffer status |
---|
1162 | pdesc->fbf.desc = pdesc->fbf.desc & 0x7FFFFFFFFFFFFFFFULL; |
---|
1163 | |
---|
1164 | // SYNC request, because these buffer descriptors |
---|
1165 | // will be read from XRAM by the CMA component |
---|
1166 | _mmc_sync( _fbf_chbuf_paddr[channel] , sizeof(fbf_chbuf_t) ); |
---|
1167 | } |
---|
1168 | |
---|
1169 | #if GIET_DEBUG_FBF_CMA |
---|
1170 | _printf("\n[FBF_CMA DEBUG] exit _sys_fb_cma_display()\n" |
---|
1171 | " - buf0_desc value = %l\n" |
---|
1172 | " - buf1_desc value = %l\n" |
---|
1173 | " - fbf_desc value = %l\n", |
---|
1174 | _fbf_chbuf[channel].buf0.desc, |
---|
1175 | _fbf_chbuf[channel].buf1.desc, |
---|
1176 | _fbf_chbuf[channel].fbf.desc ); |
---|
1177 | #endif |
---|
1178 | |
---|
1179 | return 0; |
---|
1180 | |
---|
1181 | #else |
---|
1182 | |
---|
1183 | _printf("\n[GIET ERROR] in _sys_fbf_cma_display() : no CMA channel allocated\n"); |
---|
1184 | return -1; |
---|
1185 | |
---|
1186 | #endif |
---|
1187 | } // end _sys_fbf_cma_display() |
---|
1188 | |
---|
1189 | |
---|
1190 | /////////////////////// |
---|
1191 | int _sys_fbf_cma_stop() |
---|
1192 | { |
---|
1193 | #if NB_CMA_CHANNELS > 0 |
---|
1194 | |
---|
1195 | // get channel index |
---|
1196 | unsigned int channel = _get_context_slot( CTX_CMA_FB_ID ); |
---|
1197 | |
---|
1198 | if ( channel >= NB_CMA_CHANNELS ) |
---|
1199 | { |
---|
1200 | _printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : CMA channel index too large\n"); |
---|
1201 | return -1; |
---|
1202 | } |
---|
1203 | |
---|
1204 | // Desactivate CMA channel |
---|
1205 | _cma_set_register( channel, CHBUF_RUN, 0 ); |
---|
1206 | |
---|
1207 | return 0; |
---|
1208 | |
---|
1209 | #else |
---|
1210 | |
---|
1211 | _printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : no CMA channel allocated\n"); |
---|
1212 | return -1; |
---|
1213 | |
---|
1214 | #endif |
---|
1215 | } // end _sys_fbf_cma_stop() |
---|
1216 | |
---|
1217 | |
---|
1218 | ////////////////////////////////////////////////////////////////////////////// |
---|
1219 | // Miscelaneous syscall handlers |
---|
1220 | ////////////////////////////////////////////////////////////////////////////// |
---|
1221 | |
---|
1222 | /////////////// |
---|
1223 | int _sys_ukn() |
---|
1224 | { |
---|
1225 | _printf("\n[GIET ERROR] Undefined System Call / EPC = %x\n", _get_epc() ); |
---|
1226 | return -1; |
---|
1227 | } |
---|
1228 | |
---|
1229 | //////////////////////////////////// |
---|
1230 | int _sys_proc_xyp( unsigned int* x, |
---|
1231 | unsigned int* y, |
---|
1232 | unsigned int* p ) |
---|
1233 | { |
---|
1234 | unsigned int gpid = _get_procid(); // global processor index from CPO register |
---|
1235 | |
---|
1236 | *x = (gpid >> (Y_WIDTH + P_WIDTH)) & ((1<<X_WIDTH)-1); |
---|
1237 | *y = (gpid >> P_WIDTH) & ((1<<Y_WIDTH)-1); |
---|
1238 | *p = gpid & ((1<<P_WIDTH)-1); |
---|
1239 | |
---|
1240 | return 0; |
---|
1241 | } |
---|
1242 | |
---|
1243 | ////////////////////////////////// |
---|
1244 | int _sys_task_exit( char* string ) |
---|
1245 | { |
---|
1246 | unsigned int date = _get_proctime(); |
---|
1247 | |
---|
1248 | unsigned int gpid = _get_procid(); |
---|
1249 | unsigned int cluster_xy = gpid >> P_WIDTH; |
---|
1250 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
---|
1251 | unsigned int x = cluster_xy >> Y_WIDTH; |
---|
1252 | unsigned int lpid = gpid & ((1<<P_WIDTH)-1); |
---|
1253 | |
---|
1254 | unsigned int task_id = _get_context_slot(CTX_LTID_ID); |
---|
1255 | |
---|
1256 | // print exit message |
---|
1257 | _printf("\n[GIET] Exit task %d on processor[%d,%d,%d] at cycle %d" |
---|
1258 | "\n Cause : %s\n\n", |
---|
1259 | task_id, x, y, lpid, date, string ); |
---|
1260 | |
---|
1261 | // goes to sleeping state |
---|
1262 | _set_context_slot(CTX_RUN_ID, 0); |
---|
1263 | |
---|
1264 | // deschedule |
---|
1265 | _context_switch(); |
---|
1266 | |
---|
1267 | return 0; |
---|
1268 | } |
---|
1269 | |
---|
1270 | ////////////////////// |
---|
1271 | int _context_switch() |
---|
1272 | { |
---|
1273 | unsigned int save_sr; |
---|
1274 | |
---|
1275 | _it_disable( &save_sr ); |
---|
1276 | _ctx_switch(); |
---|
1277 | _it_restore( &save_sr ); |
---|
1278 | |
---|
1279 | return 0; |
---|
1280 | } |
---|
1281 | |
---|
1282 | //////////////////////// |
---|
1283 | int _sys_local_task_id() |
---|
1284 | { |
---|
1285 | return _get_context_slot(CTX_LTID_ID); |
---|
1286 | } |
---|
1287 | |
---|
1288 | ///////////////////////// |
---|
1289 | int _sys_global_task_id() |
---|
1290 | { |
---|
1291 | return _get_context_slot(CTX_GTID_ID); |
---|
1292 | } |
---|
1293 | |
---|
1294 | //////////////////// |
---|
1295 | int _sys_thread_id() |
---|
1296 | { |
---|
1297 | return _get_context_slot(CTX_TRDID_ID); |
---|
1298 | } |
---|
1299 | |
---|
1300 | //////////////////////////////////////////// |
---|
1301 | int _sys_procs_number( unsigned int* x_size, |
---|
1302 | unsigned int* y_size, |
---|
1303 | unsigned int* nprocs ) |
---|
1304 | { |
---|
1305 | mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE; |
---|
1306 | mapping_cluster_t * cluster = _get_cluster_base(header); |
---|
1307 | |
---|
1308 | unsigned int x; |
---|
1309 | unsigned int y; |
---|
1310 | unsigned int okmin = 1; |
---|
1311 | unsigned int okmax = 1; |
---|
1312 | |
---|
1313 | // compute max values |
---|
1314 | unsigned int xmax = header->x_size; |
---|
1315 | unsigned int ymax = header->y_size; |
---|
1316 | unsigned int procs = cluster[0].procs; |
---|
1317 | |
---|
1318 | // check the (ymax-1) lower rows |
---|
1319 | for ( y = 0 ; y < ymax-1 ; y++ ) |
---|
1320 | { |
---|
1321 | for ( x = 0 ; x < xmax ; x++ ) |
---|
1322 | { |
---|
1323 | if (cluster[x*ymax+y].procs != procs ) okmin = 0; |
---|
1324 | } |
---|
1325 | } |
---|
1326 | |
---|
1327 | // check the upper row |
---|
1328 | for ( x = 0 ; x < xmax ; x++ ) |
---|
1329 | { |
---|
1330 | if (cluster[x*ymax+ymax-1].procs != procs ) okmax = 0; |
---|
1331 | } |
---|
1332 | |
---|
1333 | // return values |
---|
1334 | if ( okmin && okmax ) |
---|
1335 | { |
---|
1336 | *x_size = xmax; |
---|
1337 | *y_size = ymax; |
---|
1338 | *nprocs = procs; |
---|
1339 | } |
---|
1340 | else if ( okmin ) |
---|
1341 | { |
---|
1342 | *x_size = xmax; |
---|
1343 | *y_size = ymax-1; |
---|
1344 | *nprocs = procs; |
---|
1345 | } |
---|
1346 | else |
---|
1347 | { |
---|
1348 | *x_size = 0; |
---|
1349 | *y_size = 0; |
---|
1350 | *nprocs = 0; |
---|
1351 | } |
---|
1352 | return 0; |
---|
1353 | } |
---|
1354 | |
---|
1355 | /////////////////////////////////////////////////////// |
---|
1356 | int _sys_vobj_get_vbase( char* vspace_name, |
---|
1357 | char* vobj_name, |
---|
1358 | unsigned int* vbase ) |
---|
1359 | { |
---|
1360 | mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE; |
---|
1361 | mapping_vspace_t * vspace = _get_vspace_base(header); |
---|
1362 | mapping_vobj_t * vobj = _get_vobj_base(header); |
---|
1363 | |
---|
1364 | unsigned int vspace_id; |
---|
1365 | unsigned int vobj_id; |
---|
1366 | |
---|
1367 | // scan vspaces |
---|
1368 | for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++) |
---|
1369 | { |
---|
1370 | if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0) |
---|
1371 | { |
---|
1372 | // scan vobjs |
---|
1373 | for (vobj_id = vspace[vspace_id].vobj_offset; |
---|
1374 | vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs); |
---|
1375 | vobj_id++) |
---|
1376 | { |
---|
1377 | if (_strncmp(vobj[vobj_id].name, vobj_name, 31) == 0) |
---|
1378 | { |
---|
1379 | *vbase = vobj[vobj_id].vbase; |
---|
1380 | return 0; |
---|
1381 | } |
---|
1382 | } |
---|
1383 | } |
---|
1384 | } |
---|
1385 | return -1; // not found |
---|
1386 | } |
---|
1387 | |
---|
1388 | ///////////////////////////////////////////////////////// |
---|
1389 | int _sys_vobj_get_length( char* vspace_name, |
---|
1390 | char* vobj_name, |
---|
1391 | unsigned int* length ) |
---|
1392 | { |
---|
1393 | mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE; |
---|
1394 | mapping_vspace_t * vspace = _get_vspace_base(header); |
---|
1395 | mapping_vobj_t * vobj = _get_vobj_base(header); |
---|
1396 | |
---|
1397 | unsigned int vspace_id; |
---|
1398 | unsigned int vobj_id; |
---|
1399 | |
---|
1400 | // scan vspaces |
---|
1401 | for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++) |
---|
1402 | { |
---|
1403 | if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0) |
---|
1404 | { |
---|
1405 | // scan vobjs |
---|
1406 | for (vobj_id = vspace[vspace_id].vobj_offset; |
---|
1407 | vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs); |
---|
1408 | vobj_id++) |
---|
1409 | { |
---|
1410 | if (_strncmp(vobj[vobj_id].name, vobj_name, 31) == 0) |
---|
1411 | { |
---|
1412 | *length = vobj[vobj_id].length; |
---|
1413 | return 0; |
---|
1414 | } |
---|
1415 | } |
---|
1416 | } |
---|
1417 | } |
---|
1418 | return -1; // not found |
---|
1419 | } |
---|
1420 | |
---|
1421 | //////////////////////////////////////// |
---|
1422 | int _sys_xy_from_ptr( void* ptr, |
---|
1423 | unsigned int* x, |
---|
1424 | unsigned int* y ) |
---|
1425 | { |
---|
1426 | unsigned int ppn; |
---|
1427 | unsigned int flags; |
---|
1428 | unsigned int vpn = (((unsigned int)ptr)>>12); |
---|
1429 | |
---|
1430 | // get the page table pointer |
---|
1431 | page_table_t* pt = (page_table_t*)_get_context_slot( CTX_PTAB_ID ); |
---|
1432 | |
---|
1433 | // compute the physical address |
---|
1434 | _v2p_translate( pt, vpn, &ppn, &flags ); |
---|
1435 | |
---|
1436 | *x = (ppn>>24) & 0xF; |
---|
1437 | *y = (ppn>>20) & 0xF; |
---|
1438 | return 0; |
---|
1439 | } |
---|
1440 | |
---|
1441 | ///////////////////////////////////////// |
---|
1442 | int _sys_heap_info( unsigned int* vaddr, |
---|
1443 | unsigned int* length, |
---|
1444 | unsigned int x, |
---|
1445 | unsigned int y ) |
---|
1446 | { |
---|
1447 | mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE; |
---|
1448 | mapping_task_t * tasks = _get_task_base(header); |
---|
1449 | mapping_vobj_t * vobjs = _get_vobj_base(header); |
---|
1450 | mapping_vspace_t * vspaces = _get_vspace_base(header); |
---|
1451 | |
---|
1452 | unsigned int task_id; |
---|
1453 | unsigned int vspace_id; |
---|
1454 | unsigned int vobj_id = 0xFFFFFFFF; |
---|
1455 | |
---|
1456 | // searching the heap vobj_id |
---|
1457 | if ( (x < X_SIZE) && (y < Y_SIZE) ) // searching a task in cluster(x,y) |
---|
1458 | { |
---|
1459 | // get vspace global index |
---|
1460 | vspace_id = _get_context_slot(CTX_VSID_ID); |
---|
1461 | |
---|
1462 | // scan all tasks in vspace |
---|
1463 | unsigned int min = vspaces[vspace_id].task_offset ; |
---|
1464 | unsigned int max = min + vspaces[vspace_id].tasks ; |
---|
1465 | for ( task_id = min ; task_id < max ; task_id++ ) |
---|
1466 | { |
---|
1467 | if ( tasks[task_id].clusterid == (x * Y_SIZE + y) ) |
---|
1468 | { |
---|
1469 | vobj_id = tasks[task_id].heap_vobj_id; |
---|
1470 | if ( vobj_id != 0xFFFFFFFF ) break; |
---|
1471 | } |
---|
1472 | } |
---|
1473 | } |
---|
1474 | else // searching in the calling task |
---|
1475 | { |
---|
1476 | task_id = _get_context_slot(CTX_GTID_ID); |
---|
1477 | vobj_id = tasks[task_id].heap_vobj_id; |
---|
1478 | } |
---|
1479 | |
---|
1480 | // analysing the vobj_id |
---|
1481 | if ( vobj_id != 0xFFFFFFFF ) |
---|
1482 | { |
---|
1483 | *vaddr = vobjs[vobj_id].vbase; |
---|
1484 | *length = vobjs[vobj_id].length; |
---|
1485 | return 0; |
---|
1486 | } |
---|
1487 | else |
---|
1488 | { |
---|
1489 | *vaddr = 0; |
---|
1490 | *length = 0; |
---|
1491 | return -1; |
---|
1492 | } |
---|
1493 | } // end _sys_heap_info() |
---|
1494 | |
---|
1495 | |
---|
1496 | // Local Variables: |
---|
1497 | // tab-width: 4 |
---|
1498 | // c-basic-offset: 4 |
---|
1499 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
1500 | // indent-tabs-mode: nil |
---|
1501 | // End: |
---|
1502 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
1503 | |
---|