1 | #include "stdio.h" |
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2 | #include "mapping_info.h" // for coprocessors types an modes |
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3 | |
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4 | #define VECTOR_SIZE 32 |
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5 | |
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6 | #define VERBOSE 1 |
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7 | |
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8 | // Memory buffers for coprocessor |
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9 | unsigned int opa[VECTOR_SIZE] __attribute__((aligned(64))); |
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10 | unsigned int opb[VECTOR_SIZE] __attribute__((aligned(64))); |
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11 | unsigned int res[VECTOR_SIZE] __attribute__((aligned(64))); |
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12 | |
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13 | ///////////////////////////////////////// |
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14 | __attribute__ ((constructor)) void main() |
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15 | { |
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16 | // get processor identifiers |
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17 | unsigned int x; |
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18 | unsigned int y; |
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19 | unsigned int lpid; |
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20 | giet_proc_xyp( &x, &y, &lpid ); |
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21 | |
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22 | giet_shr_printf("\n*** Starting coproc application on processor" |
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23 | "[%d,%d,%d] at cycle %d\n", |
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24 | x, y, lpid, giet_proctime() ); |
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25 | |
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26 | // initializes opa & opb buffers |
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27 | unsigned int word; |
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28 | for ( word = 0 ; word < VECTOR_SIZE ; word++ ) |
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29 | { |
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30 | opa[word] = giet_rand() + 1; |
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31 | opb[word] = giet_rand() + 1; |
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32 | } |
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33 | |
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34 | // request a GCD coprocessor |
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35 | unsigned int coproc_info; |
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36 | unsigned int cluster_xy; |
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37 | |
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38 | giet_coproc_alloc( MWR_SUBTYPE_GCD, |
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39 | &coproc_info, |
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40 | &cluster_xy ); |
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41 | |
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42 | // check coprocessor ports |
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43 | unsigned int nb_to_coproc = (coproc_info ) & 0xFF; |
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44 | unsigned int nb_from_coproc = (coproc_info>> 8) & 0xFF; |
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45 | unsigned int nb_config = (coproc_info>>16) & 0xFF; |
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46 | unsigned int nb_status = (coproc_info>>24) & 0xFF; |
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47 | |
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48 | giet_assert( ((nb_to_coproc == 2) && |
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49 | (nb_from_coproc == 1) && |
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50 | (nb_config == 1) && |
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51 | (nb_status == 0) ) , |
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52 | "wrong GCD coprocessor interface" ); |
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53 | |
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54 | if ( VERBOSE ) |
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55 | giet_shr_printf("\n*** get GCD coprocessor at cycle %d\n", |
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56 | giet_proctime() ); |
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57 | |
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58 | // initializes communication channels |
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59 | giet_coproc_channel_t desc; |
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60 | |
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61 | desc.channel_mode = MODE_DMA_NO_IRQ; |
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62 | desc.buffer_size = VECTOR_SIZE<<2; |
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63 | desc.buffer_vaddr = (unsigned int)opa; |
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64 | |
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65 | giet_coproc_channel_init( cluster_xy , 0 , &desc ); |
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66 | |
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67 | desc.channel_mode = MODE_DMA_NO_IRQ; |
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68 | desc.buffer_size = VECTOR_SIZE<<2; |
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69 | desc.buffer_vaddr = (unsigned int)opb; |
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70 | |
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71 | giet_coproc_channel_init( cluster_xy , 1 , &desc ); |
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72 | |
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73 | desc.channel_mode = MODE_DMA_IRQ; |
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74 | desc.buffer_size = VECTOR_SIZE<<2; |
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75 | desc.buffer_vaddr = (unsigned int)res; |
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76 | |
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77 | giet_coproc_channel_init( cluster_xy , 2 , &desc ); |
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78 | |
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79 | if ( VERBOSE ) |
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80 | giet_shr_printf("\n*** initialise coomunication channels at cycle %d\n", |
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81 | giet_proctime() ); |
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82 | |
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83 | // starts communication channels |
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84 | giet_coproc_channel_start( cluster_xy , 0 ); |
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85 | giet_coproc_channel_start( cluster_xy , 1 ); |
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86 | giet_coproc_channel_start( cluster_xy , 2 ); |
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87 | |
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88 | if ( VERBOSE ) |
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89 | giet_shr_printf("\n*** start communication channels at cycle %d\n", |
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90 | giet_proctime() ); |
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91 | |
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92 | // starts GCD coprocessor |
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93 | giet_coproc_register_set( cluster_xy , 0 , 1 ); |
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94 | |
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95 | if ( VERBOSE ) |
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96 | giet_shr_printf("\n*** start GCD coprocessor at cycle %d\n", |
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97 | giet_proctime() ); |
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98 | |
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99 | // wait coprocessor completion |
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100 | giet_coproc_completed( cluster_xy ); |
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101 | |
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102 | if ( VERBOSE ) |
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103 | giet_shr_printf("\n*** GCD computation completed at cycle %d\n", |
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104 | giet_proctime() ); |
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105 | |
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106 | // display result |
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107 | for ( word = 0 ; word < VECTOR_SIZE ; word++ ) |
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108 | { |
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109 | giet_shr_printf("pgcd( %d , %d ) = %d\n", |
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110 | opa[word] , opb[word] , res[word] ); |
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111 | } |
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112 | |
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113 | giet_exit("completed"); |
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114 | |
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115 | } // end main |
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116 | |
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