1 | /* |
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2 | * soclib_pic.c - soclib PIC driver implementation. |
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3 | * |
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4 | * Author Alain Greiner (2016,2017) |
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5 | * |
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6 | * Copyright (c) UPMC Sorbonne Universites |
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7 | * |
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8 | * This file is part of ALMOS-MKH. |
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9 | * |
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10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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11 | * under the terms of the GNU General Public License as published by |
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12 | * the Free Software Foundation; version 2.0 of the License. |
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13 | * |
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14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | * General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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22 | */ |
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23 | |
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24 | #include <hal_types.h> |
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25 | #include <chdev.h> |
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26 | #include <soclib_pic.h> |
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27 | #include <errno.h> |
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28 | #include <string.h> |
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29 | #include <vfs.h> |
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30 | #include <rpc.h> |
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31 | #include <cluster.h> |
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32 | #include <printk.h> |
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33 | #include <core.h> |
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34 | #include <thread.h> |
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35 | |
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36 | ////////////////////////////////////////////////////////////////////////////////////// |
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37 | // Extern variables |
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38 | ////////////////////////////////////////////////////////////////////////////////////// |
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39 | |
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40 | extern chdev_directory_t chdev_dir; // defined in chdev.h / allocated in kerneL-init.c |
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41 | |
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42 | extern iopic_input_t iopic_input; // defined in dev_pic.h / allocated in kernel_init.c |
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43 | extern lapic_input_t lapic_input; // defined in dev_pic.h / allocated in kernel_init.c |
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44 | |
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45 | ////////////////////////////////////////////////////////////////////////////////////// |
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46 | // SOCLIB PIC private functions |
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47 | ////////////////////////////////////////////////////////////////////////////////////// |
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48 | |
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49 | /////////////////////////////// |
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50 | uint32_t soclib_pic_wti_alloc() |
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51 | { |
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52 | uint32_t index; |
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53 | |
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54 | // get pointer on cluster extension for SOCLIB PIC (XCU descriptor) |
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55 | soclib_pic_cluster_t * ext_ptr = LOCAL_CLUSTER->pic_extend; |
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56 | |
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57 | assert( (ext_ptr->first_free_wti < ext_ptr->wti_nr) , __FUNCTION__ , |
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58 | "no free WTI found : too much external IRQs\n"); |
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59 | |
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60 | // update WTI allocator |
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61 | index = ext_ptr->first_free_wti; |
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62 | ext_ptr->first_free_wti++; |
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63 | |
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64 | return index; |
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65 | |
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66 | } // end soclib_pic_wti_alloc() |
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67 | |
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68 | /////////////////////////////////////// |
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69 | inline uint32_t * soclib_pic_xcu_base() |
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70 | { |
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71 | return ((soclib_pic_cluster_t *)(LOCAL_CLUSTER->pic_extend))->xcu_base; |
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72 | } |
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73 | |
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74 | ///////////////////////////////////////////////////////// |
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75 | inline uint32_t * soclib_pic_remote_xcu_base( cxy_t cxy ) |
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76 | { |
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77 | soclib_pic_cluster_t * extend; |
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78 | |
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79 | // get extended pointer on PIC extension in remote cluster |
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80 | extend = hal_remote_lpt( XPTR( cxy , &cluster_manager.pic_extend ) ); |
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81 | |
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82 | return (uint32_t *)hal_remote_lpt( XPTR( cxy , &extend->xcu_base ) ); |
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83 | |
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84 | } |
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85 | |
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86 | /////////////////////////////////////////// |
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87 | void soclib_pic_xcu_status( lid_t lid, |
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88 | uint32_t * hwi_status, |
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89 | uint32_t * wti_status, |
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90 | uint32_t * pti_status ) |
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91 | { |
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92 | // get local XCU segment base |
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93 | uint32_t * base = soclib_pic_xcu_base(); |
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94 | |
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95 | // read PRIO register |
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96 | uint32_t prio = base[(XCU_PRIO << 5) | lid]; |
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97 | |
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98 | *wti_status = (prio & 0x4) ? (((prio >> 24) & 0x1F) + 1) : 0; |
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99 | *hwi_status = (prio & 0x2) ? (((prio >> 16) & 0x1F) + 1) : 0; |
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100 | *pti_status = (prio & 0x1) ? (((prio >> 8) & 0x1F) + 1) : 0; |
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101 | |
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102 | } |
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103 | |
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104 | //////////////////////////////////////////////////// |
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105 | inline uint32_t soclib_pic_xcu_ack( uint32_t * reg ) |
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106 | { |
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107 | return *reg; |
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108 | } |
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109 | |
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110 | ///////////////////////////// |
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111 | void soclib_pic_irq_handler() |
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112 | { |
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113 | uint32_t hwi_status; // HWI index + 1 / no pending HWI if 0 |
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114 | uint32_t wti_status; // WTI index + 1 / no pending WTI if 0 |
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115 | uint32_t pti_status; // PTI index + 1 / no pending PTI if 0 |
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116 | chdev_t * src_chdev; // pointer on source chdev descriptor |
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117 | uint32_t index; // WTI / HWI / PTI index |
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118 | uint32_t ack; // XCU acknowledge requires a read... |
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119 | |
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120 | core_t * core = CURRENT_THREAD->core; |
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121 | |
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122 | // get XCU status |
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123 | soclib_pic_xcu_status( core->lid, |
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124 | &hwi_status, |
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125 | &wti_status, |
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126 | &pti_status ); |
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127 | |
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128 | irq_dmsg("\n[INFO] %s : enter for core[%x,%d] / WTI = %x / HWI = %x / WTI = %x\n", |
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129 | __FUNCTION__ , local_cxy , core->lid , wti_status , hwi_status , pti_status ); |
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130 | |
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131 | // analyse status and handle up to 3 pending IRQ (one WTI, one HWI, one PTI) |
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132 | |
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133 | if( wti_status ) // pending WTI |
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134 | { |
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135 | index = wti_status - 1; |
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136 | |
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137 | if( index < LOCAL_CLUSTER->cores_nr ) // it is an IPI |
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138 | { |
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139 | assert( (index == core->lid) , __FUNCTION__ , "illegal IPI index" ); |
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140 | |
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141 | // acknowledge WTI |
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142 | uint32_t * base = soclib_pic_xcu_base(); |
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143 | ack = base[(XCU_WTI_REG << 5) | core->lid]; |
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144 | |
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145 | // check RPC FIFO, and activate or create a RPC thread |
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146 | // it there is a pending RPC request |
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147 | rpc_check(); |
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148 | } |
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149 | else // it is an external device |
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150 | { |
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151 | // get pointer on source chdev |
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152 | src_chdev = ((soclib_pic_core_t *)core->pic_extend)->wti_vector[index]; |
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153 | |
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154 | if( src_chdev == NULL ) // strange, but not fatal |
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155 | { |
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156 | printk("\n[WARNING] in %s : no handler for WTI %d on core %d in cluster %x\n", |
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157 | __FUNCTION__ , index , core->lid , local_cxy ); |
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158 | |
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159 | core->spurious_irqs ++; |
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160 | |
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161 | // disable WTI in local XCU controller |
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162 | uint32_t * base = soclib_pic_xcu_base(); |
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163 | base[(XCU_MSK_WTI_DISABLE << 5) | core->lid] = 1 << core->lid; |
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164 | } |
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165 | else // call relevant ISR |
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166 | { |
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167 | irq_dmsg("\n[INFO] %s received WTI : index = %d for core %d in cluster %d\n", |
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168 | __FUNCTION__ , index , core->lid , local_cxy ); |
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169 | |
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170 | // call ISR |
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171 | src_chdev->isr( src_chdev ); |
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172 | } |
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173 | } |
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174 | } |
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175 | |
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176 | if( hwi_status ) // pending HWI |
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177 | { |
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178 | index = hwi_status - 1; |
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179 | |
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180 | // get pointer on source chdev |
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181 | src_chdev = ((soclib_pic_core_t *)core->pic_extend)->hwi_vector[index]; |
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182 | |
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183 | if( src_chdev == NULL ) // strange, but not fatal |
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184 | { |
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185 | printk("\n[WARNING] in %s : no handler for HWI %d on core %d in cluster %x\n", |
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186 | __FUNCTION__ , index , core->lid , local_cxy ); |
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187 | |
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188 | core->spurious_irqs ++; |
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189 | |
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190 | // disable HWI in local XCU controller |
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191 | uint32_t * base = soclib_pic_xcu_base(); |
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192 | base[(XCU_MSK_HWI_DISABLE << 5) | core->lid] = 1 << core->lid; |
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193 | } |
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194 | else // call relevant ISR |
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195 | { |
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196 | irq_dmsg("\n[INFO] %s received HWI : index = %d for core %d in cluster %d\n", |
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197 | __FUNCTION__ , index , core->lid , local_cxy ); |
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198 | |
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199 | // call ISR |
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200 | src_chdev->isr( src_chdev ); |
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201 | } |
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202 | } |
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203 | |
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204 | if( pti_status ) // pending PTI |
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205 | { |
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206 | index = pti_status - 1; |
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207 | |
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208 | irq_dmsg("\n[INFO] %s received PTI : index = %d for cpu %d in cluster %d\n", |
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209 | __FUNCTION__ , index , core->lid , local_cxy ); |
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210 | |
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211 | assert( (index == core->lid) , __FUNCTION__ , "unconsistent PTI index\n"); |
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212 | |
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213 | // acknowledge PTI |
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214 | uint32_t * base = soclib_pic_xcu_base(); |
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215 | ack = base[(XCU_PTI_ACK << 5) | core->lid]; |
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216 | |
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217 | // execute all actions related to TICK event |
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218 | core_clock( core ); |
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219 | } |
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220 | } // end soclib_pic_irq_handler() |
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221 | |
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222 | |
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223 | |
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224 | |
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225 | ////////////////////////////////////////////////////////////////////////////////////// |
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226 | // SOCLIC PIC device generic API |
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227 | ////////////////////////////////////////////////////////////////////////////////////// |
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228 | |
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229 | ///////////////////////////////////// |
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230 | void soclib_pic_init( chdev_t * pic ) |
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231 | { |
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232 | uint32_t i; // for loop on IOPIC inputs |
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233 | uint32_t x; // for loop on clusters in a row |
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234 | uint32_t y; // for loop on clusters in a column inputs |
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235 | uint32_t lid; // for loop on cores in a cluster |
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236 | |
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237 | // get target architecture parameters |
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238 | cluster_t * cluster = LOCAL_CLUSTER; |
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239 | uint32_t x_size = cluster->x_size; |
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240 | uint32_t y_size = cluster->y_size; |
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241 | uint32_t y_width = cluster->y_width; |
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242 | uint32_t ncores = cluster->cores_nr; |
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243 | |
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244 | // get IOPIC controller cluster and segment base pointer |
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245 | cxy_t iopic_seg_cxy = (cxy_t)GET_CXY( pic->base ); |
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246 | uint32_t * iopic_seg_ptr = (uint32_t *)GET_PTR( pic->base ); |
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247 | |
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248 | // reset the IOPIC component registers : mask all input IRQs |
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249 | for( i = 0 ; i < CONFIG_MAX_EXTERNAL_IRQS ; i++ ) |
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250 | { |
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251 | xptr_t iopic_seg_xp = XPTR( iopic_seg_cxy, |
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252 | iopic_seg_ptr + i*IOPIC_SPAN + IOPIC_MASK ); |
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253 | hal_remote_sw( iopic_seg_xp , 0 ); |
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254 | } |
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255 | |
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256 | // GET XCU controller segment base |
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257 | uint32_t * base = soclib_pic_xcu_base(); |
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258 | |
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259 | // reset the XCU component registers in all clusters: |
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260 | // mask all HWIs, all WTIs, and all PTIs, for all cores |
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261 | for( x = 0 ; x < x_size ; x++ ) |
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262 | { |
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263 | for( y = 0 ; y < y_size ; y++ ) |
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264 | { |
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265 | for( lid = 0 ; lid < ncores ; lid++ ) |
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266 | { |
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267 | cxy_t cxy = (x<<y_width) + y; |
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268 | xptr_t hwi_mask_xp = XPTR( cxy , base + (XCU_MSK_HWI_DISABLE << 5 | lid) ); |
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269 | xptr_t wti_mask_xp = XPTR( cxy , base + (XCU_MSK_WTI_DISABLE << 5 | lid) ); |
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270 | xptr_t pti_mask_xp = XPTR( cxy , base + (XCU_MSK_PTI_DISABLE << 5 | lid) ); |
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271 | hal_remote_sw( hwi_mask_xp , 0xFFFFFFFF ); |
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272 | hal_remote_sw( wti_mask_xp , 0xFFFFFFFF ); |
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273 | hal_remote_sw( pti_mask_xp , 0xFFFFFFFF ); |
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274 | } |
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275 | } |
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276 | } |
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277 | } // end soclib_pic_init() |
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278 | |
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279 | ////////////////////////////////////////////////// |
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280 | void soclib_pic_extend_init( uint32_t * xcu_base ) |
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281 | { |
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282 | soclib_pic_cluster_t * cluster_ext_ptr; |
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283 | soclib_pic_core_t * core_ext_ptr; |
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284 | kmem_req_t req; |
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285 | uint32_t lid; |
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286 | uint32_t idx; |
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287 | |
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288 | cluster_t * cluster = LOCAL_CLUSTER; |
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289 | |
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290 | // create core extension for all cores in cluster |
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291 | for( lid = 0 ; lid < cluster->cores_nr ; lid++ ) |
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292 | { |
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293 | // allocate memory for core extension |
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294 | req.type = KMEM_GENERIC; |
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295 | req.size = sizeof(soclib_pic_core_t); |
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296 | req.flags = AF_KERNEL; |
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297 | core_ext_ptr = kmem_alloc( &req ); |
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298 | |
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299 | assert( (core_ext_ptr != NULL) , __FUNCTION__ , |
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300 | "cannot allocate memory for core extension\n"); |
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301 | |
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302 | // reset the HWI / WTI interrupt vectors |
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303 | for( idx = 0 ; idx < SOCLIB_MAX_HWI ; idx++ ) core_ext_ptr->hwi_vector[idx] = NULL; |
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304 | for( idx = 0 ; idx < SOCLIB_MAX_WTI ; idx++ ) core_ext_ptr->wti_vector[idx] = NULL; |
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305 | |
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306 | // register PIC extension in core descriptor |
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307 | cluster->core_tbl[lid].pic_extend = core_ext_ptr; |
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308 | } |
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309 | |
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310 | // allocate memory for cluster extension |
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311 | req.type = KMEM_GENERIC; |
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312 | req.size = sizeof(soclib_pic_cluster_t); |
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313 | req.flags = AF_KERNEL; |
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314 | cluster_ext_ptr = kmem_alloc( &req ); |
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315 | |
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316 | assert( (cluster_ext_ptr != NULL) , __FUNCTION__ , |
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317 | "cannot allocate memory for cluster extension\n"); |
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318 | |
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319 | // get XCU characteristics from the XCU config register |
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320 | uint32_t config = xcu_base[XCU_CONFIG<<5]; |
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321 | uint32_t wti_nr = (config >> 16) & 0xFF; |
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322 | uint32_t hwi_nr = (config >> 8 ) & 0xFF; |
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323 | uint32_t pti_nr = (config ) & 0xFF; |
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324 | |
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325 | // initialize the cluster extension |
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326 | // The first WTI slots are for IPIs (one slot per core) |
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327 | cluster_ext_ptr->xcu_base = xcu_base; |
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328 | cluster_ext_ptr->hwi_nr = hwi_nr; |
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329 | cluster_ext_ptr->wti_nr = wti_nr; |
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330 | cluster_ext_ptr->pti_nr = pti_nr; |
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331 | cluster_ext_ptr->first_free_wti = cluster->cores_nr; |
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332 | |
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333 | // register PIC extension in cluster manager |
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334 | cluster->pic_extend = cluster_ext_ptr; |
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335 | |
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336 | } // end soclib_pic_extend_init() |
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337 | |
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338 | //////////////////////////////////////// |
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339 | void soclib_pic_bind_irq( lid_t lid, |
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340 | chdev_t * src_chdev ) |
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341 | { |
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342 | // get extended & local pointers on PIC chdev descriptor |
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343 | xptr_t pic_xp = chdev_dir.pic; |
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344 | cxy_t pic_cxy = GET_CXY( pic_xp ); |
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345 | chdev_t * pic_ptr = (chdev_t *)GET_PTR( pic_xp ); |
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346 | |
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347 | // get extended and local pointers on IOPIC segment base |
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348 | xptr_t seg_pic_xp = hal_remote_lwd( XPTR( pic_cxy , &pic_ptr->base ) ); |
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349 | cxy_t seg_pic_cxy = GET_CXY( seg_pic_xp ); |
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350 | uint32_t * seg_pic_ptr = (uint32_t *)GET_PTR( seg_pic_xp ); |
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351 | |
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352 | // get local pointer on XCU segment base |
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353 | uint32_t * seg_xcu_ptr = soclib_pic_xcu_base(); |
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354 | |
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355 | // get the source chdev functionnal type, channel, and direction |
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356 | uint32_t func = src_chdev->func; |
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357 | uint32_t channel = src_chdev->channel; |
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358 | bool_t is_rx = src_chdev->is_rx; |
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359 | |
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360 | if( (func == DEV_FUNC_IOC) || (func == DEV_FUNC_NIC) || |
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361 | (func == DEV_FUNC_TXT) || (func == DEV_FUNC_IOB) ) // external IRQ => WTI |
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362 | { |
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363 | // get external IRQ index |
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364 | uint32_t irq_id; |
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365 | if ( func == DEV_FUNC_IOC ) irq_id = iopic_input.ioc[channel]; |
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366 | else if( func == DEV_FUNC_TXT ) irq_id = iopic_input.txt[channel]; |
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367 | else if( (func == DEV_FUNC_NIC) && is_rx ) irq_id = iopic_input.nic_rx[channel]; |
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368 | else if( (func == DEV_FUNC_NIC) && !is_rx ) irq_id = iopic_input.nic_tx[channel]; |
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369 | else if( func == DEV_FUNC_IOB ) irq_id = iopic_input.iob; |
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370 | else assert( false , __FUNCTION__ , "illegal device functionnal type\n"); |
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371 | |
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372 | // get a WTI mailbox from local XCU descriptor |
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373 | uint32_t wti_id = soclib_pic_wti_alloc(); |
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374 | |
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375 | // register IRQ type and index in chdev |
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376 | src_chdev->irq_type = SOCLIB_TYPE_WTI; |
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377 | src_chdev->irq_id = wti_id; |
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378 | |
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379 | // compute extended pointer on WTI mailbox in local XCU |
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380 | xptr_t wti_xp = XPTR( local_cxy , &seg_xcu_ptr[(XCU_WTI_REG << 5) | wti_id] ); |
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381 | |
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382 | // set the IOPIC_ADDRESS and IOPIC_EXTEND registers in IOPIC |
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383 | uint32_t lsb_wdata = (uint32_t)wti_xp; |
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384 | uint32_t msb_wdata = (uint32_t)(wti_xp >> 32); |
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385 | xptr_t lsb_xp = XPTR( seg_pic_cxy , seg_pic_ptr+irq_id*IOPIC_SPAN+IOPIC_ADDRESS ); |
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386 | xptr_t msb_xp = XPTR( seg_pic_cxy , seg_pic_ptr+irq_id*IOPIC_SPAN+IOPIC_EXTEND ); |
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387 | hal_remote_sw( lsb_xp , lsb_wdata ); |
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388 | hal_remote_sw( msb_xp , msb_wdata ); |
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389 | |
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390 | // unmask IRQ in IOPIC |
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391 | hal_remote_sw( XPTR( seg_pic_cxy , seg_pic_ptr+irq_id*IOPIC_SPAN+IOPIC_MASK ), 1 ); |
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392 | |
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393 | // update the WTI interrupt vector for core[lid] |
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394 | core_t * core = &LOCAL_CLUSTER->core_tbl[lid]; |
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395 | ((soclib_pic_core_t *)core->pic_extend)->wti_vector[wti_id] = src_chdev; |
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396 | } |
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397 | else if( (func == DEV_FUNC_DMA) || (func == DEV_FUNC_MMC) ) // internal IRQ => HWI |
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398 | { |
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399 | // get internal IRQ index |
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400 | uint32_t hwi_id; |
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401 | if( func == DEV_FUNC_DMA ) hwi_id = lapic_input.dma[channel]; |
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402 | else hwi_id = lapic_input.mmc; |
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403 | |
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404 | // register IRQ type and index in chdev |
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405 | src_chdev->irq_type = SOCLIB_TYPE_HWI; |
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406 | src_chdev->irq_id = hwi_id; |
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407 | |
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408 | // update the HWI interrupt vector for core[lid] |
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409 | core_t * core = &LOCAL_CLUSTER->core_tbl[lid]; |
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410 | ((soclib_pic_core_t *)core->pic_extend)->wti_vector[hwi_id] = src_chdev; |
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411 | } |
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412 | else |
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413 | { |
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414 | assert( false , __FUNCTION__ , "illegal device functionnal type\n" ); |
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415 | } |
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416 | } // end soclib_pic_bind_irq(); |
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417 | |
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418 | /////////////////////////////////////// |
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419 | void soclib_pic_enable_irq( lid_t lid, |
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420 | xptr_t src_chdev_xp ) |
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421 | { |
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422 | // get cluster and local pointer on remote src_chdev |
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423 | cxy_t src_chdev_cxy = GET_CXY( src_chdev_xp ); |
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424 | chdev_t * src_chdev_ptr = (chdev_t *)GET_PTR( src_chdev_xp ); |
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425 | |
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426 | // get local pointer on remote XCU segment base |
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427 | uint32_t * seg_xcu_ptr = soclib_pic_remote_xcu_base( src_chdev_cxy ); |
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428 | |
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429 | // get the source chdev IRQ type and index |
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430 | uint32_t irq_type = hal_remote_lw( XPTR( src_chdev_cxy , &src_chdev_ptr->irq_type ) ); |
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431 | uint32_t irq_id = hal_remote_lw( XPTR( src_chdev_cxy , &src_chdev_ptr->irq_id ) ); |
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432 | |
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433 | if( irq_type == SOCLIB_TYPE_HWI ) |
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434 | { |
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435 | // enable this HWI in remote XCU controller |
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436 | hal_remote_sw( XPTR( src_chdev_cxy , |
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437 | &seg_xcu_ptr[(XCU_MSK_HWI_ENABLE << 5) | lid] ) , (1 << irq_id) ); |
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438 | } |
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439 | else if( irq_type == SOCLIB_TYPE_WTI ) |
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440 | { |
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441 | // enable this WTI in remote XCU controller |
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442 | hal_remote_sw( XPTR( src_chdev_cxy , |
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443 | &seg_xcu_ptr[(XCU_MSK_WTI_ENABLE << 5) | lid] ) , (1 << irq_id) ); |
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444 | } |
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445 | else |
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446 | { |
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447 | assert( false , __FUNCTION__ , "illegal IRQ type\n" ); |
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448 | } |
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449 | } // end soclib_pic_enable_irq() |
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450 | |
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451 | //////////////////////////////////////// |
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452 | void soclib_pic_disable_irq( lid_t lid, |
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453 | xptr_t src_chdev_xp ) |
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454 | { |
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455 | // get cluster and local pointer on remote src_chdev |
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456 | cxy_t src_chdev_cxy = GET_CXY( src_chdev_xp ); |
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457 | chdev_t * src_chdev_ptr = (chdev_t *)GET_PTR( src_chdev_xp ); |
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458 | |
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459 | // get local pointer on remote XCU segment base |
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460 | uint32_t * seg_xcu_ptr = soclib_pic_remote_xcu_base( src_chdev_cxy ); |
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461 | |
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462 | // get the source chdev IRQ type and index |
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463 | uint32_t irq_type = hal_remote_lw( XPTR( src_chdev_cxy , &src_chdev_ptr->irq_type ) ); |
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464 | uint32_t irq_id = hal_remote_lw( XPTR( src_chdev_cxy , &src_chdev_ptr->irq_id ) ); |
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465 | |
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466 | if( irq_type == SOCLIB_TYPE_HWI ) |
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467 | { |
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468 | // enable this HWI in remote XCU controller |
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469 | hal_remote_sw( XPTR( src_chdev_cxy , |
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470 | &seg_xcu_ptr[(XCU_MSK_HWI_DISABLE << 5) | lid] ) , (1 << irq_id) ); |
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471 | } |
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472 | else if( irq_type == SOCLIB_TYPE_WTI ) |
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473 | { |
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474 | // enable this WTI in remote XCU controller |
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475 | hal_remote_sw( XPTR( src_chdev_cxy , |
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476 | &seg_xcu_ptr[(XCU_MSK_WTI_DISABLE << 5) | lid] ) , (1 << irq_id) ); |
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477 | } |
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478 | else |
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479 | { |
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480 | assert( false , __FUNCTION__ , "illegal IRQ type\n" ); |
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481 | } |
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482 | } // end soclib_pic_enable_irq() |
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483 | |
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484 | /////////////////////////////////////////////// |
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485 | void soclib_pic_enable_timer( uint32_t period ) |
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486 | { |
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487 | // calling core local index |
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488 | lid_t lid = CURRENT_CORE->lid; |
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489 | |
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490 | // get XCU segment base |
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491 | uint32_t * base = soclib_pic_xcu_base(); |
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492 | |
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493 | // set period value in XCU |
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494 | base[(XCU_PTI_PER << 5) | lid] = period; |
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495 | |
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496 | // enable PTI in local XCU controller |
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497 | base[(XCU_MSK_PTI_ENABLE << 5) | lid] = 1 << lid; |
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498 | } |
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499 | |
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500 | //////////////////////////// |
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501 | void soclib_pic_enable_ipi() |
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502 | { |
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503 | // calling core local index |
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504 | lid_t lid = CURRENT_CORE->lid; |
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505 | |
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506 | // get XCU segment base |
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507 | uint32_t * base = soclib_pic_xcu_base(); |
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508 | |
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509 | // enable WTI in local XCU controller |
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510 | base[(XCU_MSK_WTI_ENABLE << 5) | lid] = 1 << lid; |
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511 | } |
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512 | |
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513 | /////////////////////////////////////// |
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514 | void soclib_pic_send_ipi( cxy_t cxy, |
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515 | lid_t lid ) |
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516 | { |
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517 | // get pointer on local XCU segment base |
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518 | uint32_t * base = soclib_pic_xcu_base(); |
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519 | |
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520 | // write to WTI mailbox[cxy][lid] |
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521 | hal_remote_sw( XPTR( cxy , &base[(XCU_WTI_REG << 5) | lid] ) , 0 ); |
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522 | } |
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523 | |
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524 | |
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525 | |
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