1 | /* |
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2 | * COPYRIGHT (c) 2012-2015 |
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3 | * Cobham Gaisler |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.org/license/LICENSE. |
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8 | * |
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9 | */ |
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10 | |
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11 | #include <bsp.h> |
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12 | #include <bsp/irq-generic.h> |
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13 | |
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14 | static inline int bsp_irq_cpu(int irq) |
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15 | { |
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16 | #if defined(RTEMS_SMP) |
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17 | Processor_mask affinity; |
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18 | |
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19 | (void) bsp_interrupt_get_affinity((rtems_vector_number) irq, &affinity); |
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20 | return (int) _Processor_mask_Find_last_set(&affinity); |
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21 | #elif defined(LEON3) |
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22 | return _LEON3_Get_current_processor(); |
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23 | #else |
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24 | return 0; |
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25 | #endif |
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26 | } |
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27 | |
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28 | #if !defined(LEON3) |
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29 | bool bsp_interrupt_is_valid_vector(rtems_vector_number vector) |
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30 | { |
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31 | if (vector == 0) { |
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32 | return false; |
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33 | } |
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34 | |
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35 | return vector <= BSP_INTERRUPT_VECTOR_MAX_STD; |
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36 | } |
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37 | |
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38 | void bsp_interrupt_facility_initialize(void) |
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39 | { |
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40 | /* Nothing to do */ |
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41 | } |
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42 | |
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43 | static bool is_maskable(rtems_vector_number vector) |
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44 | { |
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45 | return vector != 15; |
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46 | } |
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47 | |
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48 | rtems_status_code bsp_interrupt_get_attributes( |
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49 | rtems_vector_number vector, |
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50 | rtems_interrupt_attributes *attributes |
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51 | ) |
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52 | { |
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53 | attributes->is_maskable = is_maskable(vector); |
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54 | attributes->can_enable = true; |
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55 | attributes->maybe_enable = true; |
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56 | attributes->can_disable = is_maskable(vector); |
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57 | attributes->maybe_disable = is_maskable(vector); |
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58 | attributes->can_raise = true; |
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59 | attributes->can_raise_on = true; |
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60 | attributes->can_clear = true; |
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61 | attributes->cleared_by_acknowledge = true; |
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62 | attributes->can_set_affinity = true; |
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63 | return RTEMS_SUCCESSFUL; |
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64 | } |
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65 | |
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66 | rtems_status_code bsp_interrupt_is_pending( |
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67 | rtems_vector_number vector, |
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68 | bool *pending |
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69 | ) |
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70 | { |
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71 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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72 | bsp_interrupt_assert(pending != NULL); |
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73 | *pending = BSP_Is_interrupt_pending(vector) || |
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74 | BSP_Is_interrupt_forced(vector); |
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75 | return RTEMS_SUCCESSFUL; |
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76 | } |
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77 | |
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78 | rtems_status_code bsp_interrupt_raise(rtems_vector_number vector) |
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79 | { |
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80 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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81 | BSP_Force_interrupt(vector); |
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82 | return RTEMS_SUCCESSFUL; |
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83 | } |
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84 | |
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85 | #if defined(RTEMS_SMP) |
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86 | rtems_status_code bsp_interrupt_raise_on( |
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87 | rtems_vector_number vector, |
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88 | uint32_t cpu_index |
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89 | ) |
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90 | { |
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91 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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92 | BSP_Force_interrupt(vector); |
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93 | return RTEMS_SUCCESSFUL; |
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94 | } |
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95 | #endif |
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96 | |
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97 | rtems_status_code bsp_interrupt_clear(rtems_vector_number vector) |
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98 | { |
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99 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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100 | BSP_Clear_forced_interrupt(vector); |
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101 | BSP_Clear_interrupt(vector); |
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102 | return RTEMS_SUCCESSFUL; |
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103 | } |
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104 | |
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105 | rtems_status_code bsp_interrupt_vector_is_enabled( |
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106 | rtems_vector_number vector, |
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107 | bool *enabled |
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108 | ) |
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109 | { |
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110 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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111 | bsp_interrupt_assert(enabled != NULL); |
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112 | *enabled = !BSP_Cpu_Is_interrupt_masked(vector, bsp_irq_cpu(vector)); |
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113 | return RTEMS_SUCCESSFUL; |
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114 | } |
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115 | |
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116 | rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector) |
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117 | { |
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118 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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119 | BSP_Cpu_Unmask_interrupt(vector, 0); |
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120 | return RTEMS_SUCCESSFUL; |
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121 | } |
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122 | |
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123 | rtems_status_code bsp_interrupt_vector_disable(rtems_vector_number vector) |
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124 | { |
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125 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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126 | |
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127 | if (!is_maskable(vector)) { |
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128 | return RTEMS_UNSATISFIED; |
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129 | } |
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130 | |
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131 | BSP_Cpu_Mask_interrupt(vector, 0); |
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132 | return RTEMS_SUCCESSFUL; |
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133 | } |
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134 | #endif |
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135 | |
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136 | void BSP_shared_interrupt_mask(int irq) |
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137 | { |
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138 | BSP_Cpu_Mask_interrupt(irq, bsp_irq_cpu(irq)); |
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139 | } |
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140 | |
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141 | void BSP_shared_interrupt_unmask(int irq) |
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142 | { |
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143 | BSP_Cpu_Unmask_interrupt(irq, bsp_irq_cpu(irq)); |
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144 | } |
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145 | |
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146 | void BSP_shared_interrupt_clear(int irq) |
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147 | { |
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148 | /* We don't have to interrupt lock here, because the register is only |
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149 | * written and self clearing |
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150 | */ |
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151 | BSP_Clear_interrupt(irq); |
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152 | } |
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