1 | /* |
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2 | * dev_iob.c - IOB (bridge to external I/O) generic device API implementation. |
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3 | * |
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4 | * Authors Alain Greiner (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 PARTIOBLAR 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 <kernel_config.h> |
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25 | #include <hal_types.h> |
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26 | #include <hal_special.h> |
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27 | #include <remote_spinlock.h> |
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28 | #include <chdev.h> |
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29 | #include <printk.h> |
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30 | #include <soclib_iob.h> |
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31 | #include <dev_iob.h> |
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32 | |
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33 | //////////////////////////////////// |
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34 | void dev_iob_init( chdev_t * chdev ) |
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35 | { |
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36 | // get implementation |
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37 | uint32_t impl = chdev->impl; |
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38 | |
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39 | // call driver init function |
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40 | if( impl == IMPL_IOB_TSR ) |
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41 | { |
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42 | soclib_iob_init( chdev ); |
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43 | } |
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44 | else |
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45 | { |
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46 | assert( false , __FUNCTION__ , "undefined IOB device implementation\n" ); |
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47 | } |
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48 | } |
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49 | |
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50 | ////////////////////////////////////////// |
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51 | void dev_iob_iommu_enable( xptr_t dev_xp ) |
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52 | { |
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53 | // get IOB chdev descriptor cluster and local pointer |
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54 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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55 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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56 | |
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57 | // get implementation from chdev descriptor |
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58 | uint32_t impl = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->impl ) ); |
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59 | |
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60 | // call driver function |
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61 | if( impl == IMPL_IOB_TSR ) |
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62 | { |
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63 | remote_spinlock_lock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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64 | soclib_iob_set_active( dev_xp , 1 ); |
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65 | remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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66 | } |
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67 | else |
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68 | { |
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69 | printk("\n[PANIC] in %s: undefined IOB device implementation\n", __FUNCTION__ ); |
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70 | hal_core_sleep(); |
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71 | } |
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72 | } |
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73 | |
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74 | /////////////////////////////////////////// |
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75 | void dev_iob_iommu_disable( xptr_t dev_xp ) |
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76 | { |
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77 | // get IOB chdev descriptor cluster and local pointer |
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78 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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79 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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80 | |
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81 | // get implementation from chdev descriptor |
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82 | uint32_t impl = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->impl ) ); |
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83 | |
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84 | // call driver function |
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85 | if( impl == IMPL_IOB_TSR ) |
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86 | { |
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87 | remote_spinlock_lock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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88 | soclib_iob_set_active( dev_xp , 0 ); |
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89 | remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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90 | } |
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91 | else |
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92 | { |
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93 | printk("\n[PANIC] in %s: undefined IOB device implementation\n", __FUNCTION__ ); |
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94 | hal_core_sleep(); |
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95 | } |
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96 | } |
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97 | |
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98 | //////////////////////////////////////// |
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99 | void dev_iob_set_ptpr( xptr_t dev_xp, |
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100 | uint32_t wdata ) |
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101 | { |
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102 | // get IOB chdev descriptor cluster and local pointer |
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103 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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104 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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105 | |
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106 | // get implementation from chdev descriptor |
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107 | uint32_t impl = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->impl ) ); |
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108 | |
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109 | // call driver function |
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110 | if( impl == IMPL_IOB_TSR ) |
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111 | { |
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112 | remote_spinlock_lock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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113 | soclib_iob_set_ptpr( dev_xp , wdata ); |
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114 | remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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115 | } |
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116 | else |
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117 | { |
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118 | printk("\n[PANIC] in %s: undefined IOB device implementation\n", __FUNCTION__ ); |
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119 | hal_core_sleep(); |
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120 | } |
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121 | } |
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122 | |
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123 | //////////////////////////////////////// |
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124 | void dev_iob_inval_page( xptr_t dev_xp, |
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125 | vpn_t vpn ) |
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126 | { |
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127 | // get IOB chdev descriptor cluster and local pointer |
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128 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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129 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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130 | |
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131 | // get implementation from chdev descriptor |
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132 | uint32_t impl = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->impl ) ); |
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133 | |
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134 | // call driver function |
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135 | if( impl == IMPL_IOB_TSR ) |
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136 | { |
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137 | remote_spinlock_lock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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138 | soclib_iob_inval_page( dev_xp , vpn ); |
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139 | remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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140 | } |
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141 | else |
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142 | { |
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143 | printk("\n[PANIC] in %s: undefined IOB device implementation\n", __FUNCTION__ ); |
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144 | hal_core_sleep(); |
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145 | } |
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146 | } |
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147 | |
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148 | /////////////////////////////////////////// |
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149 | void dev_iob_get_status( xptr_t dev_xp, |
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150 | uint32_t * error, |
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151 | uint32_t * bvar, |
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152 | uint32_t * srcid ) |
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153 | { |
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154 | // get IOB chdev descriptor cluster and local pointer |
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155 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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156 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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157 | |
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158 | // get implementation from chdev descriptor |
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159 | uint32_t impl = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->impl ) ); |
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160 | |
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161 | // call driver function |
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162 | if( impl == IMPL_IOB_TSR ) |
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163 | { |
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164 | remote_spinlock_lock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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165 | *error = soclib_iob_get_error( dev_xp ); |
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166 | *srcid = soclib_iob_get_srcid( dev_xp ); |
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167 | *bvar = soclib_iob_get_bvar( dev_xp ); |
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168 | remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); |
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169 | } |
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170 | else |
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171 | { |
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172 | printk("\n[PANIC] in %s: undefined IOB device implementation\n", __FUNCTION__ ); |
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173 | hal_core_sleep(); |
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174 | } |
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175 | } |
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176 | |
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