| 1 | /////////////////////////////////////////////////////////////////////////// |
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| 2 | // File : utils.c |
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| 3 | // Date : 18/10/2013 |
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| 4 | // Author : alain greiner |
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| 5 | // Copyright (c) UPMC-LIP6 |
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| 6 | /////////////////////////////////////////////////////////////////////////// |
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| 7 | // The utils.c and utils.h files are part of the GIET-VM nano-kernel. |
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| 8 | /////////////////////////////////////////////////////////////////////////// |
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| 9 | |
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| 10 | #include <utils.h> |
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| 11 | #include <tty0.h> |
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| 12 | #include <giet_config.h> |
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| 13 | #include <hard_config.h> |
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| 14 | #include <mapping_info.h> |
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| 15 | #include <tty_driver.h> |
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| 16 | #include <ctx_handler.h> |
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| 17 | |
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| 18 | // This variable is allocated in the boot.c file or in kernel_init.c file |
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| 19 | extern static_scheduler_t* _schedulers[X_SIZE][Y_SIZE][NB_PROCS_MAX]; |
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| 20 | |
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| 21 | /////////////////////////////////////////////////////////////////////////// |
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| 22 | // CP0 registers access functions |
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| 23 | /////////////////////////////////////////////////////////////////////////// |
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| 24 | |
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| 25 | ///////////////////////// |
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| 26 | unsigned int _get_sched() |
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| 27 | { |
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| 28 | unsigned int ret; |
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| 29 | asm volatile( "mfc0 %0, $4,2 \n" |
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| 30 | : "=r"(ret) ); |
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| 31 | return ret; |
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| 32 | } |
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| 33 | /////////////////////// |
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| 34 | unsigned int _get_epc() |
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| 35 | { |
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| 36 | unsigned int ret; |
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| 37 | asm volatile( "mfc0 %0, $14 \n" |
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| 38 | : "=r"(ret) ); |
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| 39 | return ret; |
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| 40 | } |
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| 41 | //////////////////////// |
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| 42 | unsigned int _get_bvar() |
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| 43 | { |
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| 44 | unsigned int ret; |
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| 45 | asm volatile( "mfc0 %0, $8 \n" |
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| 46 | : "=r"(ret)); |
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| 47 | return ret; |
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| 48 | } |
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| 49 | ////////////////////// |
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| 50 | unsigned int _get_cr() |
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| 51 | { |
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| 52 | unsigned int ret; |
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| 53 | asm volatile( "mfc0 %0, $13 \n" |
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| 54 | : "=r"(ret)); |
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| 55 | return ret; |
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| 56 | } |
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| 57 | ////////////////////// |
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| 58 | unsigned int _get_sr() |
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| 59 | { |
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| 60 | unsigned int ret; |
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| 61 | asm volatile( "mfc0 %0, $12 \n" |
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| 62 | : "=r"(ret)); |
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| 63 | return ret; |
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| 64 | } |
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| 65 | ////////////////////////// |
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| 66 | unsigned int _get_procid() |
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| 67 | { |
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| 68 | unsigned int ret; |
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| 69 | asm volatile ( "mfc0 %0, $15, 1 \n" |
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| 70 | :"=r" (ret) ); |
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| 71 | return (ret & 0xFFF); |
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| 72 | } |
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| 73 | //////////////////////////// |
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| 74 | unsigned int _get_proctime() |
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| 75 | { |
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| 76 | unsigned int ret; |
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| 77 | asm volatile ( "mfc0 %0, $9 \n" |
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| 78 | :"=r" (ret) ); |
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| 79 | return ret; |
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| 80 | } |
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| 81 | |
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| 82 | ///////////////////////////////////////////// |
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| 83 | void _it_disable( unsigned int * save_sr_ptr) |
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| 84 | { |
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| 85 | unsigned int sr = 0; |
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| 86 | asm volatile( "li $3, 0xFFFFFFFE \n" |
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| 87 | "mfc0 %0, $12 \n" |
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| 88 | "and $3, $3, %0 \n" |
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| 89 | "mtc0 $3, $12 \n" |
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| 90 | : "+r"(sr) |
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| 91 | : |
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| 92 | : "$3" ); |
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| 93 | *save_sr_ptr = sr; |
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| 94 | } |
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| 95 | ////////////////////////////////////////////// |
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| 96 | void _it_restore( unsigned int * save_sr_ptr ) |
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| 97 | { |
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| 98 | unsigned int sr = *save_sr_ptr; |
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| 99 | asm volatile( "mtc0 %0, $12 \n" |
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| 100 | : |
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| 101 | : "r"(sr) |
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| 102 | : "memory" ); |
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| 103 | } |
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| 104 | |
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| 105 | ///////////////////////////////// |
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| 106 | void _set_sched(unsigned int val) |
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| 107 | { |
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| 108 | asm volatile ( "mtc0 %0, $4, 2 \n" |
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| 109 | : |
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| 110 | :"r" (val) ); |
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| 111 | } |
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| 112 | ////////////////////////////// |
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| 113 | void _set_sr(unsigned int val) |
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| 114 | { |
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| 115 | asm volatile ( "mtc0 %0, $12 \n" |
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| 116 | : |
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| 117 | :"r" (val) ); |
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| 118 | } |
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| 119 | |
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| 120 | |
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| 121 | /////////////////////////////////////////////////////////////////////////// |
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| 122 | // CP2 registers access functions |
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| 123 | /////////////////////////////////////////////////////////////////////////// |
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| 124 | |
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| 125 | //////////////////////////// |
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| 126 | unsigned int _get_mmu_ptpr() |
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| 127 | { |
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| 128 | unsigned int ret; |
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| 129 | asm volatile( "mfc2 %0, $0 \n" |
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| 130 | : "=r"(ret) ); |
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| 131 | return ret; |
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| 132 | } |
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| 133 | //////////////////////////// |
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| 134 | unsigned int _get_mmu_mode() |
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| 135 | { |
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| 136 | unsigned int ret; |
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| 137 | asm volatile( "mfc2 %0, $1 \n" |
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| 138 | : "=r"(ret) ); |
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| 139 | return ret; |
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| 140 | } |
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| 141 | //////////////////////////////////// |
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| 142 | void _set_mmu_ptpr(unsigned int val) |
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| 143 | { |
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| 144 | asm volatile ( "mtc2 %0, $0 \n" |
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| 145 | : |
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| 146 | :"r" (val) |
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| 147 | :"memory" ); |
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| 148 | } |
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| 149 | //////////////////////////////////// |
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| 150 | void _set_mmu_mode(unsigned int val) |
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| 151 | { |
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| 152 | asm volatile ( "mtc2 %0, $1 \n" |
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| 153 | : |
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| 154 | :"r" (val) |
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| 155 | :"memory" ); |
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| 156 | } |
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| 157 | //////////////////////////////////////////// |
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| 158 | void _set_mmu_dcache_inval(unsigned int val) |
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| 159 | { |
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| 160 | asm volatile ( "mtc2 %0, $7 \n" |
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| 161 | : |
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| 162 | :"r" (val) |
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| 163 | :"memory" ); |
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| 164 | } |
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| 165 | |
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| 166 | |
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| 167 | /////////////////////////////////////////////////////////////////////////// |
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| 168 | // Physical addressing related functions |
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| 169 | /////////////////////////////////////////////////////////////////////////// |
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| 170 | |
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| 171 | /////////////////////////////////////////////////////// |
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| 172 | unsigned int _physical_read( unsigned long long paddr ) |
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| 173 | { |
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| 174 | unsigned int value; |
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| 175 | unsigned int lsb = (unsigned int) paddr; |
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| 176 | unsigned int msb = (unsigned int) (paddr >> 32); |
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| 177 | unsigned int sr; |
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| 178 | |
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| 179 | _it_disable(&sr); |
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| 180 | |
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| 181 | asm volatile( "mfc2 $2, $1 \n" /* $2 <= MMU_MODE */ |
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| 182 | "andi $3, $2, 0xb \n" |
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| 183 | "mtc2 $3, $1 \n" /* DTLB off */ |
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| 184 | |
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| 185 | "mtc2 %2, $24 \n" /* PADDR_EXT <= msb */ |
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| 186 | "lw %0, 0(%1) \n" /* value <= *paddr */ |
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| 187 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 188 | |
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| 189 | "mtc2 $2, $1 \n" /* restore MMU_MODE */ |
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| 190 | : "=r" (value) |
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| 191 | : "r" (lsb), "r" (msb) |
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| 192 | : "$2", "$3" ); |
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| 193 | |
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| 194 | _it_restore(&sr); |
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| 195 | return value; |
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| 196 | } |
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| 197 | //////////////////////////////////////////////// |
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| 198 | void _physical_write( unsigned long long paddr, |
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| 199 | unsigned int value ) |
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| 200 | { |
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| 201 | unsigned int lsb = (unsigned int)paddr; |
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| 202 | unsigned int msb = (unsigned int)(paddr >> 32); |
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| 203 | unsigned int sr; |
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| 204 | |
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| 205 | _it_disable(&sr); |
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| 206 | |
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| 207 | asm volatile( "mfc2 $2, $1 \n" /* $2 <= MMU_MODE */ |
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| 208 | "andi $3, $2, 0xb \n" |
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| 209 | "mtc2 $3, $1 \n" /* DTLB off */ |
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| 210 | |
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| 211 | "mtc2 %2, $24 \n" /* PADDR_EXT <= msb */ |
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| 212 | "sw %0, 0(%1) \n" /* *paddr <= value */ |
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| 213 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 214 | |
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| 215 | "mtc2 $2, $1 \n" /* restore MMU_MODE */ |
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| 216 | "sync \n" |
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| 217 | : |
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| 218 | : "r" (value), "r" (lsb), "r" (msb) |
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| 219 | : "$2", "$3" ); |
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| 220 | |
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| 221 | _it_restore(&sr); |
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| 222 | } |
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| 223 | |
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| 224 | ///////////////////////////////////////////////////////////////// |
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| 225 | unsigned long long _physical_read_ull( unsigned long long paddr ) |
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| 226 | { |
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| 227 | unsigned int data_lsb; |
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| 228 | unsigned int data_msb; |
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| 229 | unsigned int addr_lsb = (unsigned int) paddr; |
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| 230 | unsigned int addr_msb = (unsigned int) (paddr >> 32); |
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| 231 | unsigned int sr; |
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| 232 | |
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| 233 | _it_disable(&sr); |
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| 234 | |
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| 235 | asm volatile( "mfc2 $2, $1 \n" /* $2 <= MMU_MODE */ |
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| 236 | "andi $3, $2, 0xb \n" |
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| 237 | "mtc2 $3, $1 \n" /* DTLB off */ |
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| 238 | |
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| 239 | "mtc2 %3, $24 \n" /* PADDR_EXT <= msb */ |
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| 240 | "lw %0, 0(%2) \n" /* data_lsb <= *paddr */ |
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| 241 | "lw %1, 4(%2) \n" /* data_msb <= *paddr+4 */ |
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| 242 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 243 | |
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| 244 | "mtc2 $2, $1 \n" /* restore MMU_MODE */ |
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| 245 | : "=r" (data_lsb), "=r"(data_msb) |
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| 246 | : "r" (addr_lsb), "r" (addr_msb) |
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| 247 | : "$2", "$3" ); |
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| 248 | |
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| 249 | _it_restore(&sr); |
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| 250 | |
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| 251 | return ( (((unsigned long long)data_msb)<<32) + |
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| 252 | (((unsigned long long)data_lsb)) ); |
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| 253 | } |
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| 254 | |
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| 255 | /////////////////////////////////////////////////// |
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| 256 | void _physical_write_ull( unsigned long long paddr, |
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| 257 | unsigned long long value ) |
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| 258 | { |
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| 259 | unsigned int addr_lsb = (unsigned int)paddr; |
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| 260 | unsigned int addr_msb = (unsigned int)(paddr >> 32); |
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| 261 | unsigned int data_lsb = (unsigned int)value; |
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| 262 | unsigned int data_msb = (unsigned int)(value >> 32); |
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| 263 | unsigned int sr; |
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| 264 | |
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| 265 | _it_disable(&sr); |
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| 266 | |
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| 267 | asm volatile( "mfc2 $2, $1 \n" /* $2 <= MMU_MODE */ |
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| 268 | "andi $3, $2, 0xb \n" |
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| 269 | "mtc2 $3, $1 \n" /* DTLB off */ |
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| 270 | |
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| 271 | "mtc2 %3, $24 \n" /* PADDR_EXT <= msb */ |
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| 272 | "sw %0, 0(%2) \n" /* *paddr <= value */ |
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| 273 | "sw %1, 4(%2) \n" /* *paddr+4 <= value */ |
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| 274 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 275 | |
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| 276 | "mtc2 $2, $1 \n" /* restore MMU_MODE */ |
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| 277 | "sync \n" |
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| 278 | : |
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| 279 | : "r"(data_lsb),"r"(data_msb),"r"(addr_lsb),"r"(addr_msb) |
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| 280 | : "$2", "$3" ); |
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| 281 | |
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| 282 | _it_restore(&sr); |
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| 283 | } |
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| 284 | |
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| 285 | //////////////////////////////////////////////////// |
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| 286 | void _physical_memcpy( unsigned long long dst_paddr, // dest buffer paddr |
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| 287 | unsigned long long src_paddr, // source buffer paddr |
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| 288 | unsigned int size ) // bytes |
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| 289 | { |
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| 290 | // check alignment constraints |
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| 291 | if ( (dst_paddr & 3) || (src_paddr & 3) || (size & 3) ) |
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| 292 | { |
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| 293 | _puts("\n[GIET ERROR] in _physical_memcpy() : buffer unaligned\n"); |
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| 294 | _exit(); |
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| 295 | } |
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| 296 | |
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| 297 | unsigned int src_lsb = (unsigned int)src_paddr; |
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| 298 | unsigned int src_msb = (unsigned int)(src_paddr >> 32); |
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| 299 | unsigned int dst_lsb = (unsigned int)dst_paddr; |
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| 300 | unsigned int dst_msb = (unsigned int)(dst_paddr >> 32); |
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| 301 | unsigned int iter = size>>2; |
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| 302 | unsigned int data; |
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| 303 | unsigned int sr; |
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| 304 | |
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| 305 | _it_disable(&sr); |
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| 306 | |
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| 307 | asm volatile( "mfc2 $2, $1 \n" /* $2 <= current MMU_MODE */ |
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| 308 | "andi $3, $2, 0xb \n" /* $3 <= new MMU_MODE */ |
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| 309 | "mtc2 $3, $1 \n" /* DTLB off */ |
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| 310 | |
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| 311 | "move $4, %5 \n" /* $4 < iter */ |
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| 312 | "move $5, %1 \n" /* $5 < src_lsb */ |
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| 313 | "move $6, %3 \n" /* $6 < src_lsb */ |
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| 314 | |
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| 315 | "ph_memcpy_loop: \n" |
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| 316 | "mtc2 %2, $24 \n" /* PADDR_EXT <= src_msb */ |
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| 317 | "lw %0, 0($5) \n" /* data <= *src_paddr */ |
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| 318 | "mtc2 %4, $24 \n" /* PADDR_EXT <= dst_msb */ |
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| 319 | "sw %0, 0($6) \n" /* *dst_paddr <= data */ |
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| 320 | |
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| 321 | "addi $4, $4, -1 \n" /* iter = iter - 1 */ |
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| 322 | "addi $5, $5, 4 \n" /* src_lsb += 4 */ |
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| 323 | "addi $6, $6, 4 \n" /* dst_lsb += 4 */ |
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| 324 | "bne $4, $0, ph_memcpy_loop \n" |
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| 325 | "nop \n" |
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| 326 | |
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| 327 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 328 | "mtc2 $2, $1 \n" /* restore MMU_MODE */ |
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| 329 | : "=r" (data) |
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| 330 | : "r"(src_lsb),"r"(src_msb),"r"(dst_lsb), |
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| 331 | "r"(dst_msb), "r"(iter) |
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| 332 | : "$2", "$3", "$4", "$5", "$6" ); |
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| 333 | |
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| 334 | _it_restore(&sr); |
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| 335 | } // end _physical_memcpy() |
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| 336 | |
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| 337 | //////////////////////////////////////////////// |
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| 338 | void _physical_memset( unsigned long long paddr, // dest buffer paddr |
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| 339 | unsigned int size, // bytes |
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| 340 | unsigned int data ) // written value |
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| 341 | { |
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| 342 | // check alignment constraints |
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| 343 | if ( (paddr & 3) || (size & 7) ) |
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| 344 | { |
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| 345 | _puts("\n[GIET ERROR] in _physical_memset() : buffer unaligned\n"); |
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| 346 | _exit(); |
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| 347 | } |
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| 348 | |
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| 349 | unsigned int lsb = (unsigned int)paddr; |
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| 350 | unsigned int msb = (unsigned int)(paddr >> 32); |
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| 351 | unsigned int sr; |
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| 352 | |
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| 353 | _it_disable(&sr); |
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| 354 | |
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| 355 | asm volatile( "mfc2 $8, $1 \n" /* $8 <= current MMU_MODE */ |
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| 356 | "andi $9, $8, 0xb \n" /* $9 <= new MMU_MODE */ |
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| 357 | "mtc2 $9, $1 \n" /* DTLB off */ |
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| 358 | "mtc2 %3, $24 \n" /* PADDR_EXT <= msb */ |
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| 359 | |
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| 360 | "1: \n" /* set 8 bytes per iter */ |
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| 361 | "sw %2, 0(%0) \n" /* *src_paddr = data */ |
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| 362 | "sw %2, 4(%0) \n" /* *(src_paddr+4) = data */ |
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| 363 | "addi %1, %1, -8 \n" /* size -= 8 */ |
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| 364 | "addi %0, %0, 8 \n" /* src_paddr += 8 */ |
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| 365 | "bnez %1, 1b \n" /* loop while size != 0 */ |
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| 366 | |
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| 367 | "mtc2 $0, $24 \n" /* PADDR_EXT <= 0 */ |
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| 368 | "mtc2 $8, $1 \n" /* restore MMU_MODE */ |
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| 369 | : "+r"(lsb), "+r"(size) |
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| 370 | : "r"(data), "r" (msb) |
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| 371 | : "$8", "$9", "memory" ); |
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| 372 | |
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| 373 | _it_restore(&sr); |
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| 374 | } // _physical_memset() |
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| 375 | |
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| 376 | /////////////////////////////////////////////// |
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| 377 | void _io_extended_write( unsigned int* vaddr, |
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| 378 | unsigned int value ) |
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| 379 | { |
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| 380 | unsigned long long paddr; |
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| 381 | |
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| 382 | if ( _get_mmu_mode() & 0x4 ) // MMU activated : use virtual address |
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| 383 | { |
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| 384 | *vaddr = value; |
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| 385 | } |
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| 386 | else // use paddr extension for IO |
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| 387 | { |
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| 388 | paddr = (unsigned long long)(unsigned int)vaddr + |
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| 389 | (((unsigned long long)((X_IO<<Y_WIDTH) + Y_IO))<<32); |
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| 390 | _physical_write( paddr, value ); |
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| 391 | } |
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| 392 | asm volatile("sync" ::: "memory"); |
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| 393 | } |
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| 394 | |
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| 395 | ////////////////////////////////////////////////////// |
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| 396 | unsigned int _io_extended_read( unsigned int* vaddr ) |
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| 397 | { |
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| 398 | unsigned long long paddr; |
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| 399 | |
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| 400 | if ( _get_mmu_mode() & 0x4 ) // MMU activated : use virtual address |
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| 401 | { |
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| 402 | return *(volatile unsigned int*)vaddr; |
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| 403 | } |
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| 404 | else // use paddr extension for IO |
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| 405 | { |
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| 406 | paddr = (unsigned long long)(unsigned int)vaddr + |
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| 407 | (((unsigned long long)((X_IO<<Y_WIDTH) + Y_IO))<<32); |
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| 408 | return _physical_read( paddr ); |
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| 409 | } |
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| 410 | } |
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| 411 | |
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| 412 | //////////////////////////////////////////////////////////////////////////// |
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| 413 | // Scheduler and tasks context access functions |
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| 414 | //////////////////////////////////////////////////////////////////////////// |
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| 415 | |
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| 416 | |
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| 417 | /////////////////////////////////// |
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| 418 | unsigned int _get_current_task_id() |
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| 419 | { |
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| 420 | static_scheduler_t * psched = (static_scheduler_t *) _get_sched(); |
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| 421 | return (unsigned int) (psched->current); |
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| 422 | } |
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| 423 | |
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| 424 | //////////////////////////////////////////// |
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| 425 | unsigned int _get_task_slot( unsigned int x, |
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| 426 | unsigned int y, |
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| 427 | unsigned int p, |
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| 428 | unsigned int ltid, |
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| 429 | unsigned int slot ) |
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| 430 | { |
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| 431 | static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p]; |
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| 432 | return psched->context[ltid][slot]; |
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| 433 | } |
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| 434 | |
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| 435 | //////////////////////////////////// |
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| 436 | void _set_task_slot( unsigned int x, |
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| 437 | unsigned int y, |
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| 438 | unsigned int p, |
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| 439 | unsigned int ltid, |
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| 440 | unsigned int slot, |
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| 441 | unsigned int value ) |
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| 442 | { |
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| 443 | static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p]; |
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| 444 | psched->context[ltid][slot] = value; |
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| 445 | } |
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| 446 | |
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| 447 | /////////////////////////////////////////////////// |
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| 448 | unsigned int _get_context_slot( unsigned int slot ) |
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| 449 | { |
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| 450 | static_scheduler_t* psched = (static_scheduler_t*)_get_sched(); |
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| 451 | unsigned int task_id = psched->current; |
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| 452 | return psched->context[task_id][slot]; |
|---|
| 453 | } |
|---|
| 454 | |
|---|
| 455 | /////////////////////////////////////////// |
|---|
| 456 | void _set_context_slot( unsigned int slot, |
|---|
| 457 | unsigned int value ) |
|---|
| 458 | { |
|---|
| 459 | static_scheduler_t* psched = (static_scheduler_t*)_get_sched(); |
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| 460 | unsigned int task_id = psched->current; |
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| 461 | psched->context[task_id][slot] = value; |
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| 462 | } |
|---|
| 463 | |
|---|
| 464 | ///////////////////////////////////////////////////////////////////////////// |
|---|
| 465 | // Access functions to mapping_info data structure |
|---|
| 466 | ///////////////////////////////////////////////////////////////////////////// |
|---|
| 467 | |
|---|
| 468 | //////////////////////////////////////////////////////////////// |
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| 469 | mapping_cluster_t * _get_cluster_base(mapping_header_t * header) |
|---|
| 470 | { |
|---|
| 471 | return (mapping_cluster_t *) ((char *) header + |
|---|
| 472 | MAPPING_HEADER_SIZE); |
|---|
| 473 | } |
|---|
| 474 | ////////////////////////////////////////////////////////// |
|---|
| 475 | mapping_pseg_t * _get_pseg_base(mapping_header_t * header) |
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| 476 | { |
|---|
| 477 | return (mapping_pseg_t *) ((char *) header + |
|---|
| 478 | MAPPING_HEADER_SIZE + |
|---|
| 479 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE); |
|---|
| 480 | } |
|---|
| 481 | ////////////////////////////////////////////////////////////// |
|---|
| 482 | mapping_vspace_t * _get_vspace_base(mapping_header_t * header) |
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| 483 | { |
|---|
| 484 | return (mapping_vspace_t *) ((char *) header + |
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| 485 | MAPPING_HEADER_SIZE + |
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| 486 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
|---|
| 487 | MAPPING_PSEG_SIZE * header->psegs); |
|---|
| 488 | } |
|---|
| 489 | ////////////////////////////////////////////////////////// |
|---|
| 490 | mapping_vseg_t * _get_vseg_base(mapping_header_t * header) |
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| 491 | { |
|---|
| 492 | return (mapping_vseg_t *) ((char *) header + |
|---|
| 493 | MAPPING_HEADER_SIZE + |
|---|
| 494 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
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| 495 | MAPPING_PSEG_SIZE * header->psegs + |
|---|
| 496 | MAPPING_VSPACE_SIZE * header->vspaces); |
|---|
| 497 | } |
|---|
| 498 | ////////////////////////////////////////////////////////// |
|---|
| 499 | mapping_task_t * _get_task_base(mapping_header_t * header) |
|---|
| 500 | { |
|---|
| 501 | return (mapping_task_t *) ((char *) header + |
|---|
| 502 | MAPPING_HEADER_SIZE + |
|---|
| 503 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
|---|
| 504 | MAPPING_PSEG_SIZE * header->psegs + |
|---|
| 505 | MAPPING_VSPACE_SIZE * header->vspaces + |
|---|
| 506 | MAPPING_VSEG_SIZE * header->vsegs); |
|---|
| 507 | } |
|---|
| 508 | ///////////////////////////////////////////////////////// |
|---|
| 509 | mapping_proc_t *_get_proc_base(mapping_header_t * header) |
|---|
| 510 | { |
|---|
| 511 | return (mapping_proc_t *) ((char *) header + |
|---|
| 512 | MAPPING_HEADER_SIZE + |
|---|
| 513 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
|---|
| 514 | MAPPING_PSEG_SIZE * header->psegs + |
|---|
| 515 | MAPPING_VSPACE_SIZE * header->vspaces + |
|---|
| 516 | MAPPING_VSEG_SIZE * header->vsegs + |
|---|
| 517 | MAPPING_TASK_SIZE * header->tasks); |
|---|
| 518 | } |
|---|
| 519 | /////////////////////////////////////////////////////// |
|---|
| 520 | mapping_irq_t *_get_irq_base(mapping_header_t * header) |
|---|
| 521 | { |
|---|
| 522 | return (mapping_irq_t *) ((char *) header + |
|---|
| 523 | MAPPING_HEADER_SIZE + |
|---|
| 524 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
|---|
| 525 | MAPPING_PSEG_SIZE * header->psegs + |
|---|
| 526 | MAPPING_VSPACE_SIZE * header->vspaces + |
|---|
| 527 | MAPPING_VSEG_SIZE * header->vsegs + |
|---|
| 528 | MAPPING_TASK_SIZE * header->tasks + |
|---|
| 529 | MAPPING_PROC_SIZE * header->procs); |
|---|
| 530 | } |
|---|
| 531 | /////////////////////////////////////////////////////////////// |
|---|
| 532 | mapping_periph_t *_get_periph_base(mapping_header_t * header) |
|---|
| 533 | { |
|---|
| 534 | return (mapping_periph_t *) ((char *) header + |
|---|
| 535 | MAPPING_HEADER_SIZE + |
|---|
| 536 | MAPPING_CLUSTER_SIZE * X_SIZE * Y_SIZE + |
|---|
| 537 | MAPPING_PSEG_SIZE * header->psegs + |
|---|
| 538 | MAPPING_VSPACE_SIZE * header->vspaces + |
|---|
| 539 | MAPPING_VSEG_SIZE * header->vsegs + |
|---|
| 540 | MAPPING_TASK_SIZE * header->tasks + |
|---|
| 541 | MAPPING_PROC_SIZE * header->procs + |
|---|
| 542 | MAPPING_IRQ_SIZE * header->irqs); |
|---|
| 543 | } |
|---|
| 544 | |
|---|
| 545 | /////////////////////////////////////////////////////////////////////////// |
|---|
| 546 | // Miscelaneous functions |
|---|
| 547 | /////////////////////////////////////////////////////////////////////////// |
|---|
| 548 | |
|---|
| 549 | ////////////////////////////////////// |
|---|
| 550 | __attribute__((noreturn)) void _exit() |
|---|
| 551 | { |
|---|
| 552 | unsigned int procid = _get_procid(); |
|---|
| 553 | unsigned int x = (procid >> (Y_WIDTH + P_WIDTH)) & ((1<<X_WIDTH)-1); |
|---|
| 554 | unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1); |
|---|
| 555 | unsigned int lpid = procid & ((1<<P_WIDTH)-1); |
|---|
| 556 | |
|---|
| 557 | |
|---|
| 558 | _puts("\n[GIET PANIC] processor["); |
|---|
| 559 | _putd( x ); |
|---|
| 560 | _puts(","); |
|---|
| 561 | _putd( y ); |
|---|
| 562 | _puts(","); |
|---|
| 563 | _putd( lpid ); |
|---|
| 564 | _puts("] exit at cycle "); |
|---|
| 565 | _putd( _get_proctime() ); |
|---|
| 566 | _puts(" ...\n"); |
|---|
| 567 | |
|---|
| 568 | while (1) { asm volatile ("nop"); } |
|---|
| 569 | } |
|---|
| 570 | |
|---|
| 571 | ///////////////////////////////////// |
|---|
| 572 | void _random_wait( unsigned int val ) |
|---|
| 573 | { |
|---|
| 574 | unsigned int mask = (1<<(val&0x1F))-1; |
|---|
| 575 | unsigned int delay = (_get_proctime() ^ (_get_procid()<<4)) & mask; |
|---|
| 576 | asm volatile( "move $3, %0 \n" |
|---|
| 577 | "loop_nic_completed: \n" |
|---|
| 578 | "nop \n" |
|---|
| 579 | "addi $3, $3, -1 \n" |
|---|
| 580 | "bnez $3, loop_nic_completed \n" |
|---|
| 581 | "nop \n" |
|---|
| 582 | : |
|---|
| 583 | : "r" (delay) |
|---|
| 584 | : "$3" ); |
|---|
| 585 | } |
|---|
| 586 | |
|---|
| 587 | /////////////////////////// |
|---|
| 588 | void _break( char* string ) |
|---|
| 589 | { |
|---|
| 590 | char byte; |
|---|
| 591 | |
|---|
| 592 | _puts("\n[GIET DEBUG] break from "); |
|---|
| 593 | _puts( string ); |
|---|
| 594 | _puts(" / stoke any key to continue\n"); |
|---|
| 595 | _getc( &byte ); |
|---|
| 596 | } |
|---|
| 597 | |
|---|
| 598 | //////////////////////////////////// |
|---|
| 599 | unsigned int _strlen( char* string ) |
|---|
| 600 | { |
|---|
| 601 | unsigned int i = 0; |
|---|
| 602 | while ( string[i] != 0 ) i++; |
|---|
| 603 | return i; |
|---|
| 604 | } |
|---|
| 605 | |
|---|
| 606 | /////////////////////////////////////// |
|---|
| 607 | unsigned int _strcmp( const char * s1, |
|---|
| 608 | const char * s2 ) |
|---|
| 609 | { |
|---|
| 610 | while (1) |
|---|
| 611 | { |
|---|
| 612 | if (*s1 != *s2) return 1; |
|---|
| 613 | if (*s1 == 0) break; |
|---|
| 614 | s1++, s2++; |
|---|
| 615 | } |
|---|
| 616 | return 0; |
|---|
| 617 | } |
|---|
| 618 | |
|---|
| 619 | /////////////////////////////////////// |
|---|
| 620 | unsigned int _strncmp( const char * s1, |
|---|
| 621 | const char * s2, |
|---|
| 622 | unsigned int n ) |
|---|
| 623 | { |
|---|
| 624 | unsigned int i; |
|---|
| 625 | for (i = 0; i < n; i++) |
|---|
| 626 | { |
|---|
| 627 | if (s1[i] != s2[i]) return 1; |
|---|
| 628 | if (s1[i] == 0) break; |
|---|
| 629 | } |
|---|
| 630 | return 0; |
|---|
| 631 | } |
|---|
| 632 | |
|---|
| 633 | ///////////////////////////////////////// |
|---|
| 634 | char* _strcpy( char* dest, char* source ) |
|---|
| 635 | { |
|---|
| 636 | if (!dest || !source) return dest; |
|---|
| 637 | |
|---|
| 638 | while (*source) |
|---|
| 639 | { |
|---|
| 640 | *(dest) = *(source); |
|---|
| 641 | dest++; |
|---|
| 642 | source++; |
|---|
| 643 | } |
|---|
| 644 | *dest = 0; |
|---|
| 645 | return dest; |
|---|
| 646 | } |
|---|
| 647 | |
|---|
| 648 | ///////////////////////////////////////////////////// |
|---|
| 649 | void _dcache_buf_invalidate( unsigned int buf_vbase, |
|---|
| 650 | unsigned int buf_size ) |
|---|
| 651 | { |
|---|
| 652 | unsigned int offset; |
|---|
| 653 | unsigned int tmp; |
|---|
| 654 | unsigned int line_size; // bytes |
|---|
| 655 | |
|---|
| 656 | // compute data cache line size based on config register (bits 12:10) |
|---|
| 657 | asm volatile( |
|---|
| 658 | "mfc0 %0, $16, 1" |
|---|
| 659 | : "=r" (tmp) ); |
|---|
| 660 | |
|---|
| 661 | tmp = ((tmp >> 10) & 0x7); |
|---|
| 662 | line_size = 2 << tmp; |
|---|
| 663 | |
|---|
| 664 | // iterate on cache lines |
|---|
| 665 | for ( offset = 0; offset < buf_size; offset += line_size) |
|---|
| 666 | { |
|---|
| 667 | _set_mmu_dcache_inval( buf_vbase + offset ); |
|---|
| 668 | } |
|---|
| 669 | } |
|---|
| 670 | |
|---|
| 671 | |
|---|
| 672 | |
|---|
| 673 | ///////////////////////////////////////////// |
|---|
| 674 | void _get_sqt_footprint( unsigned int* width, |
|---|
| 675 | unsigned int* heigth, |
|---|
| 676 | unsigned int* levels ) |
|---|
| 677 | { |
|---|
| 678 | mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE; |
|---|
| 679 | mapping_cluster_t* cluster = _get_cluster_base(header); |
|---|
| 680 | |
|---|
| 681 | unsigned int x; |
|---|
| 682 | unsigned int y; |
|---|
| 683 | unsigned int cid; |
|---|
| 684 | unsigned int w = 0; |
|---|
| 685 | unsigned int h = 0; |
|---|
| 686 | |
|---|
| 687 | // scan all clusters to compute SQT footprint (w,h) |
|---|
| 688 | for ( x = 0 ; x < X_SIZE ; x++ ) |
|---|
| 689 | { |
|---|
| 690 | for ( y = 0 ; y < Y_SIZE ; y++ ) |
|---|
| 691 | { |
|---|
| 692 | cid = x * Y_SIZE + y; |
|---|
| 693 | if ( cluster[cid].procs ) // cluster contains processors |
|---|
| 694 | { |
|---|
| 695 | if ( x > w ) w = x; |
|---|
| 696 | if ( y > h ) h = y; |
|---|
| 697 | } |
|---|
| 698 | } |
|---|
| 699 | } |
|---|
| 700 | *width = w + 1; |
|---|
| 701 | *heigth = h + 1; |
|---|
| 702 | |
|---|
| 703 | // compute SQT levels |
|---|
| 704 | unsigned int z = (h > w) ? h : w; |
|---|
| 705 | *levels = (z < 1) ? 1 : (z < 2) ? 2 : (z < 4) ? 3 : (z < 8) ? 4 : 5; |
|---|
| 706 | } |
|---|
| 707 | |
|---|
| 708 | |
|---|
| 709 | |
|---|
| 710 | /////////////////////////////////////////////////////////////////////////// |
|---|
| 711 | // Required by GCC |
|---|
| 712 | /////////////////////////////////////////////////////////////////////////// |
|---|
| 713 | |
|---|
| 714 | //////////////////////////////// |
|---|
| 715 | void* memcpy( void* dest, // dest buffer vbase |
|---|
| 716 | const void* source, // source buffer vbase |
|---|
| 717 | unsigned int size ) // bytes |
|---|
| 718 | { |
|---|
| 719 | unsigned int* idst = (unsigned int*)dest; |
|---|
| 720 | unsigned int* isrc = (unsigned int*)source; |
|---|
| 721 | |
|---|
| 722 | // word-by-word copy |
|---|
| 723 | if (!((unsigned int) idst & 3) && !((unsigned int) isrc & 3)) |
|---|
| 724 | { |
|---|
| 725 | while (size > 3) |
|---|
| 726 | { |
|---|
| 727 | *idst++ = *isrc++; |
|---|
| 728 | size -= 4; |
|---|
| 729 | } |
|---|
| 730 | } |
|---|
| 731 | |
|---|
| 732 | unsigned char* cdst = (unsigned char*)dest; |
|---|
| 733 | unsigned char* csrc = (unsigned char*)source; |
|---|
| 734 | |
|---|
| 735 | /* byte-by-byte copy */ |
|---|
| 736 | while (size--) |
|---|
| 737 | { |
|---|
| 738 | *cdst++ = *csrc++; |
|---|
| 739 | } |
|---|
| 740 | return dest; |
|---|
| 741 | } |
|---|
| 742 | |
|---|
| 743 | ///////////////////////////////// |
|---|
| 744 | void* memset( void* dst, |
|---|
| 745 | int value, |
|---|
| 746 | unsigned int count ) |
|---|
| 747 | { |
|---|
| 748 | // word-by-word copy |
|---|
| 749 | unsigned int* idst = dst; |
|---|
| 750 | unsigned int data = (((unsigned char)value) ) | |
|---|
| 751 | (((unsigned char)value) << 8) | |
|---|
| 752 | (((unsigned char)value) << 16) | |
|---|
| 753 | (((unsigned char)value) << 24) ; |
|---|
| 754 | |
|---|
| 755 | if ( ! ((unsigned int)idst & 3) ) |
|---|
| 756 | { |
|---|
| 757 | while ( count > 3 ) |
|---|
| 758 | { |
|---|
| 759 | *idst++ = data; |
|---|
| 760 | count -= 4; |
|---|
| 761 | } |
|---|
| 762 | } |
|---|
| 763 | |
|---|
| 764 | // byte-by-byte copy |
|---|
| 765 | unsigned char* cdst = dst; |
|---|
| 766 | while (count--) |
|---|
| 767 | { |
|---|
| 768 | *cdst++ = (unsigned char)value; |
|---|
| 769 | } |
|---|
| 770 | return dst; |
|---|
| 771 | } |
|---|
| 772 | |
|---|
| 773 | |
|---|
| 774 | // Local Variables: |
|---|
| 775 | // tab-width: 4 |
|---|
| 776 | // c-basic-offset: 4 |
|---|
| 777 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
|---|
| 778 | // indent-tabs-mode: nil |
|---|
| 779 | // End: |
|---|
| 780 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
|---|
| 781 | |
|---|