1 | /* |
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2 | * soclib_nic.c - VCI_MASTER_NIC (Network Interface Controler) driver implementation. |
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3 | * |
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4 | * Author Alain Greiner (2016,2017,2018,2019,2020) |
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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_kernel_types.h> |
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25 | #include <hal_remote.h> |
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26 | #include <hal_special.h> |
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27 | #include <chdev.h> |
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28 | #include <dev_nic.h> |
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29 | #include <kmem.h> |
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30 | #include <printk.h> |
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31 | #include <memcpy.h> |
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32 | #include <thread.h> |
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33 | #include <soclib_nic.h> |
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34 | |
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35 | |
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36 | //////////////////////////////////////////////////////////////////////////////////////// |
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37 | // Extern global variables |
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38 | //////////////////////////////////////////////////////////////////////////////////////// |
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39 | |
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40 | extern chdev_directory_t chdev_dir; // allocated in kernel_init.c |
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41 | |
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42 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX |
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43 | |
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44 | //////////////////////////////////////////////////////////////////////////////////////// |
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45 | // static function used for SOCLIB_NIC driver debug |
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46 | //////////////////////////////////////////////////////////////////////////////////////// |
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47 | static void soclib_nic_chbuf_display( nic_chbuf_t * chbuf, |
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48 | char * name ) |
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49 | { |
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50 | uint32_t i; |
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51 | |
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52 | // software L2/L3 cache coherence for chbuf WID & RID read |
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53 | if( chdev_dir.iob ) dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); |
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54 | |
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55 | // get pointers on TXT0 chdev |
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56 | xptr_t txt0_xp = chdev_dir.txt_tx[0]; |
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57 | cxy_t txt0_cxy = GET_CXY( txt0_xp ); |
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58 | chdev_t * txt0_ptr = GET_PTR( txt0_xp ); |
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59 | |
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60 | // get extended pointer on remote TXT0 chdev lock |
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61 | xptr_t lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock ); |
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62 | |
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63 | // get TXT0 lock |
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64 | remote_busylock_acquire( lock_xp ); |
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65 | |
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66 | nolock_printk("\n***** chbuf %s : cxy %x / ptr %x / wid %d / rid %d *****\n", |
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67 | name, local_cxy , chbuf, chbuf->wid, chbuf->rid ); |
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68 | |
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69 | for( i = 0 ; i < CONFIG_SOCK_QUEUES_DEPTH ; i++ ) |
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70 | { |
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71 | uint32_t * container = chbuf->cont_ptr[i]; |
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72 | |
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73 | // software L2/L3 cache coherence for container STS & PLEN read |
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74 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container + 510 ), 8 ); |
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75 | |
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76 | if( container[511] ) |
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77 | { |
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78 | nolock_printk(" - %d : FULL / cont_ptr %x / plen %d\n", |
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79 | i, chbuf->cont_ptr[i], container[510] ); |
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80 | } |
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81 | else |
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82 | { |
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83 | nolock_printk(" - %d : EMPTY / cont_ptr %x\n", |
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84 | i, chbuf->cont_ptr[i] ); |
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85 | } |
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86 | } |
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87 | |
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88 | // release TXT0 lock |
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89 | remote_busylock_release( lock_xp ); |
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90 | |
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91 | } // end soclib_nic_chbuf_display() |
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92 | |
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93 | #endif |
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94 | |
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95 | /////////////////////////////////////// |
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96 | void soclib_nic_init( chdev_t * chdev ) |
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97 | { |
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98 | uint32_t * container; // local pointer on one container |
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99 | uint32_t cont_per_page; // number of containers per page |
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100 | uint32_t cont_gid; // container global index (in chbuf) |
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101 | bool_t cont_error; // not enough memory for chbuf containers |
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102 | |
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103 | ppn_t ppn; // used for both the chbuf descriptor and the containers |
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104 | uint64_t padr; // used for both the chbuf descriptor and the containers |
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105 | |
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106 | assert( __FUNCTION__ , (chdev->func == DEV_FUNC_NIC), |
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107 | "bad func argument" ); |
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108 | |
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109 | assert( __FUNCTION__ , (sizeof(nic_cont_t) == 2048), |
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110 | "container size must be 2048 bytes" ); |
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111 | |
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112 | assert( __FUNCTION__ , (CONFIG_PPM_PAGE_ORDER >= 11 ), |
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113 | "page size cannot be smaller than container size" ); |
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114 | |
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115 | // set driver specific fields in chdev descriptor |
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116 | chdev->cmd = &soclib_nic_cmd; |
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117 | chdev->isr = &soclib_nic_isr; |
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118 | |
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119 | // get chdev channel & direction |
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120 | bool_t is_rx = chdev->is_rx; |
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121 | uint32_t channel = chdev->channel; |
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122 | |
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123 | // get NIC device cluster and local pointer |
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124 | cxy_t nic_cxy = GET_CXY( chdev->base ); |
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125 | uint32_t * nic_ptr = GET_PTR( chdev->base ); |
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126 | |
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127 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX |
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128 | thread_t * this = CURRENT_THREAD; |
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129 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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130 | if( (is_rx == false) && DEBUG_HAL_NIC_RX < cycle ) |
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131 | printk("\n[%s] thread[%x,%x] enter : NIC_TX channel %d / chdev %x / cycle %d\n", |
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132 | __FUNCTION__, this->process->pid, this->trdid, channel, chdev, cycle ); |
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133 | if( is_rx && DEBUG_HAL_NIC_RX < cycle ) |
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134 | printk("\n[%s] thread[%x,%x] enter : NIC_RX channel %d / chdev %x / cycle %d\n", |
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135 | __FUNCTION__, this->process->pid, this->trdid, channel, chdev, cycle ); |
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136 | #endif |
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137 | |
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138 | // get number of channels from NIC hardware register |
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139 | uint32_t channels = hal_remote_l32( XPTR( nic_cxy, |
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140 | nic_ptr + NIC_GLOBAL_OFFSET + NIC_G_CHANNELS )); |
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141 | |
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142 | // check value registered in cluster descriptor |
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143 | if( LOCAL_CLUSTER->nb_nic_channels != channels ) |
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144 | { |
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145 | printk("\n[PANIC] in %s : channels[soft] (%d) != channels[hard] (%d)\n", |
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146 | __FUNCTION__, LOCAL_CLUSTER->nb_nic_channels, channels ); |
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147 | return; |
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148 | } |
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149 | |
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150 | // check channel index |
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151 | if( channel >= channels ) |
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152 | { |
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153 | printk("\n[ERROR] in %s illegal channel index\n", __FUNCTION__ ); |
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154 | return; |
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155 | } |
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156 | |
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157 | // allocate memory for chbuf descriptor |
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158 | nic_chbuf_t * chbuf = kmem_alloc( bits_log2( sizeof(nic_chbuf_t) ) , AF_KERNEL ); |
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159 | |
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160 | if( chbuf == NULL ) |
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161 | { |
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162 | printk("\n[ERROR] in %s : cannot allocate chbuf descriptor\n", __FUNCTION__ ); |
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163 | return; |
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164 | } |
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165 | |
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166 | // initialise chbuf indexes |
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167 | chbuf->wid = 0; |
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168 | chbuf->rid = 0; |
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169 | |
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170 | // software L2/L3 cache coherence for chbuf WID & RID |
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171 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ) , 8 ); |
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172 | |
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173 | cont_error = false; |
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174 | cont_gid = 0; |
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175 | cont_per_page = 1 << (CONFIG_PPM_PAGE_ORDER - 11); |
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176 | |
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177 | // allocate containers & complete chbuf initialisation |
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178 | // depending on the PPM page size, we pack several |
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179 | // 248 bytes containers in one single page. |
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180 | |
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181 | // lopp on containers |
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182 | while( cont_gid < CONFIG_SOCK_QUEUES_DEPTH ) |
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183 | { |
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184 | if( (cont_gid & (cont_per_page - 1)) == 0 ) // allocate one PPM page |
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185 | { |
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186 | container = kmem_alloc( CONFIG_PPM_PAGE_ORDER , AF_KERNEL ); |
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187 | |
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188 | if( container == NULL ) |
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189 | { |
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190 | cont_error = true; |
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191 | break; |
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192 | } |
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193 | } |
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194 | else // increment container base address |
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195 | { |
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196 | container = container + 512; |
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197 | } |
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198 | |
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199 | // initialize container as empty |
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200 | container[511] = 0; |
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201 | |
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202 | // software L2/L3 cache coherence for container STS |
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203 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[511] ) , 4 ); |
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204 | |
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205 | // compute container physical address |
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206 | ppn = ppm_base2ppn( XPTR( local_cxy , container ) ); |
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207 | padr = ((uint64_t)ppn << CONFIG_PPM_PAGE_ORDER) | |
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208 | ((intptr_t)container & CONFIG_PPM_PAGE_MASK); |
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209 | |
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210 | // complete chbuf initialisation |
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211 | chbuf->cont_ptr[cont_gid] = container; |
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212 | chbuf->cont_pad[cont_gid] = padr; |
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213 | |
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214 | // increment container index |
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215 | cont_gid++; |
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216 | } |
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217 | |
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218 | // release allocated containers and chbuf if not enough memory |
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219 | if( cont_error ) |
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220 | { |
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221 | // loop on allocated containers |
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222 | while( cont_gid ) |
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223 | { |
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224 | // release container when required |
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225 | if( (cont_gid & (cont_per_page - 1)) == 0 ) |
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226 | kmem_free( chbuf->cont_ptr[cont_gid] , CONFIG_PPM_PAGE_ORDER ); |
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227 | |
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228 | // decrement container index |
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229 | cont_gid--; |
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230 | } |
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231 | |
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232 | // release chbuf descriptor |
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233 | kmem_free( chbuf , bits_log2(sizeof(nic_chbuf_t)) ); |
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234 | |
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235 | return; |
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236 | } |
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237 | |
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238 | // software L2/L3 cache coherence for chbuf descriptor |
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239 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ), |
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240 | sizeof(nic_chbuf_t) ); |
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241 | |
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242 | // get NIC channel segment base and chbuf depth |
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243 | uint32_t * channel_base = nic_ptr + NIC_CHANNEL_SPAN * channel; |
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244 | uint32_t nbufs = CONFIG_SOCK_QUEUES_DEPTH; |
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245 | |
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246 | // compute chbuf physical address |
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247 | ppn = ppm_base2ppn( XPTR( local_cxy , chbuf ) ); |
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248 | padr = ((uint64_t)ppn << CONFIG_PPM_PAGE_ORDER) | |
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249 | ((intptr_t)chbuf & CONFIG_PPM_PAGE_MASK); |
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250 | |
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251 | uint32_t low = (uint32_t)(padr); |
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252 | uint32_t high = (uint32_t)(padr >> 32); |
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253 | |
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254 | // initialize the NIC channel registers |
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255 | if( is_rx ) |
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256 | { |
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257 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_DESC_LO ) , low ); |
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258 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_DESC_HI ) , high ); |
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259 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_NBUFS ) , nbufs ); |
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260 | |
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261 | hal_fence(); |
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262 | |
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263 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHANNEL_RUN ) , 1 ); |
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264 | } |
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265 | else |
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266 | { |
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267 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_DESC_LO ) , low ); |
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268 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_DESC_HI ) , high ); |
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269 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_NBUFS ) , nbufs ); |
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270 | |
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271 | hal_fence(); |
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272 | |
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273 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHANNEL_RUN ) , 1 ); |
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274 | } |
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275 | |
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276 | // register chbuf pointer in chdev descriptor extension |
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277 | chdev->ext.nic.queue = chbuf; |
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278 | |
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279 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX |
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280 | cycle = (uint32_t)hal_get_cycles(); |
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281 | if( (is_rx == false) && DEBUG_HAL_NIC_RX < cycle ) |
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282 | printk("\n[%s] thread[%x,%x] exit / NIC_TX channel %d / chbuf %x / cycle %d\n", |
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283 | __FUNCTION__, this->process->pid, this->trdid, channel, chbuf, cycle ); |
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284 | if( is_rx && DEBUG_HAL_NIC_RX < cycle ) |
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285 | printk("\n[%s] thread[%x,%x] exit / NIC_RX channel %d / chbuf %x / cycle %d\n", |
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286 | __FUNCTION__, this->process->pid, this->trdid, channel, chbuf, cycle ); |
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287 | soclib_nic_chbuf_display( chbuf , chdev->name ); |
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288 | #endif |
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289 | |
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290 | } // end soclib_nic_init() |
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291 | |
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292 | ////////////////////////////////////////////////////////////////// |
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293 | void __attribute__ ((noinline)) soclib_nic_cmd( xptr_t thread_xp ) |
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294 | { |
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295 | uint32_t type; // command type |
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296 | uint8_t * buffer; // pointer on command buffer |
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297 | uint32_t length; // Ethernet packet length |
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298 | xptr_t dev_xp; // extended pointer on NIC chdev |
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299 | chdev_t * dev_ptr; // local pointer on NIC chdev |
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300 | cxy_t dev_cxy; // NIC chdev cluster identifier |
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301 | nic_chbuf_t * chbuf; // pointer on chbuf descriptor |
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302 | uint32_t index; // index of current container in chbuf |
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303 | uint32_t * container; // pointer on container (array of uint32_t) |
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304 | |
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305 | thread_t * this = CURRENT_THREAD; |
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306 | |
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307 | assert( __FUNCTION__, (thread_xp == XPTR( local_cxy , this )), |
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308 | "calling thread must be the client thread"); |
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309 | |
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310 | // get command type |
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311 | type = this->nic_cmd.type; |
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312 | |
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313 | // get chdev pointers for device |
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314 | dev_xp = this->nic_cmd.dev_xp; |
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315 | dev_ptr = GET_PTR( dev_xp ); |
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316 | dev_cxy = GET_CXY( dev_xp ); |
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317 | |
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318 | // analyse command type |
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319 | switch( type ) |
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320 | { |
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321 | ////////////////////////////////////////////////////////////////////////// |
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322 | case NIC_CMD_WRITE: // move one packet from command buffer to TX queue |
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323 | { |
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324 | |
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325 | // check chdev is local |
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326 | assert( __FUNCTION__, (dev_cxy == local_cxy), |
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327 | "illegal cluster for a WRITE command"); |
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328 | |
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329 | // get command arguments |
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330 | buffer = this->nic_cmd.buffer; |
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331 | length = this->nic_cmd.length; |
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332 | |
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333 | // check packet length |
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334 | assert( __FUNCTION__, (length <= 2040), |
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335 | "packet length too large"); |
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336 | |
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337 | // get chbuf descriptor pointer |
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338 | chbuf = (nic_chbuf_t *)dev_ptr->ext.nic.queue; |
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339 | |
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340 | // software L2/L3 cache coherence for chbuf WID read |
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341 | if( chdev_dir.iob ) dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); |
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342 | |
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343 | // get container write index |
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344 | index = chbuf->wid; |
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345 | |
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346 | // get pointer on container (no L2/L3 cache coherence required) |
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347 | container = chbuf->cont_ptr[index]; |
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348 | |
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349 | // software L2/L3 cache coherence for container STS read |
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350 | if( chdev_dir.iob ) dev_mmc_inval( XPTR ( local_cxy , &container[511]) , 4 ); |
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351 | |
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352 | #if DEBUG_HAL_NIC_TX |
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353 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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354 | if( DEBUG_HAL_NIC_TX < cycle ) |
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355 | printk("\n[%s] thread[%x,%x] enter / WRITE / %s / chbuf (%x,%x) / len %d / cycle %d\n", |
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356 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->name, local_cxy, chbuf, length, cycle ); |
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357 | #endif |
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358 | // check container STS |
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359 | if( container[511] != 0 ) // container full |
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360 | { |
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361 | // return failure |
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362 | this->nic_cmd.status = 0; |
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363 | this->nic_cmd.error = 0; |
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364 | |
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365 | #if DEBUG_HAL_NIC_TX |
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366 | cycle = (uint32_t)hal_get_cycles(); |
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367 | if( DEBUG_HAL_NIC_TX < cycle ) |
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368 | printk("\n[%s] thread[%x,%x] exit / WRITE failure : NIC_TX[%d] queue full / cycle %d\n", |
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369 | __FUNCTION__, this->process->pid , this->trdid , dev_ptr->channel , cycle ); |
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370 | #endif |
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371 | } |
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372 | else // container empty |
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373 | { |
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374 | // move the packet from buffer to container |
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375 | memcpy( container , buffer , length ); |
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376 | |
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377 | // update packet length in container header |
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378 | container[510] = length; |
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379 | |
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380 | hal_fence(); |
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381 | |
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382 | // update container STS |
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383 | container[511] = 1; |
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384 | |
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385 | // update current container WID |
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386 | chbuf->wid = (index + 1) % CONFIG_SOCK_QUEUES_DEPTH; |
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387 | |
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388 | // software L2/L3 cache coherence for container DATA write |
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389 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , container ), length ); |
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390 | |
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391 | // software L2/L3 cache coherence for container LENGTH and STS write |
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392 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[510] ) , 8 ); |
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393 | |
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394 | // software L2/L3 cache coherence for chbuf WID write |
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395 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ) , 8 ); |
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396 | |
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397 | // return success |
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398 | this->nic_cmd.status = length; |
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399 | this->nic_cmd.error = 0; |
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400 | |
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401 | #if DEBUG_HAL_NIC_TX |
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402 | cycle = (uint32_t)hal_get_cycles(); |
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403 | if( DEBUG_HAL_NIC_TX < cycle ) |
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404 | printk("\n[%s] thread[%x,%x] exit / WRITE success on NIC_TX[%d] / len %d / cycle %d\n", |
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405 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->channel , length, cycle ); |
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406 | if((DEBUG_HAL_NIC_TX < cycle) && (DEBUG_HAL_NIC_TX & 1)) |
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407 | putb( "64 first bytes moved to TX queue by NIC driver" , buffer , 64 ); |
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408 | #endif |
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409 | } |
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410 | } |
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411 | break; // end WRITE |
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412 | |
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413 | ///////////////////////////////////////////////////////////////////////// |
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414 | case NIC_CMD_READ: // move one packet from RX queue to kernel buffer |
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415 | { |
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416 | |
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417 | // check chdev is local |
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418 | assert( __FUNCTION__, (dev_cxy == local_cxy), |
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419 | "illegal cluster for a READ command"); |
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420 | |
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421 | // get target buffer |
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422 | buffer = this->nic_cmd.buffer; |
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423 | |
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424 | // get chbuf descriptor pointer |
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425 | chbuf = (nic_chbuf_t *)dev_ptr->ext.nic.queue; |
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426 | |
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427 | // software L2/L3 cache coherence for chbuf WID & RID read |
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428 | if( chdev_dir.iob ) dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); |
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429 | |
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430 | // get container read index |
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431 | index = chbuf->rid; |
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432 | |
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433 | // get pointer on container (no L2/L3 cache coherence required) |
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434 | container = chbuf->cont_ptr[index]; |
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435 | |
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436 | // software L2/L3 cache coherence for container STS & PLEN read |
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437 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container + 510 ), 8 ); |
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438 | |
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439 | #if DEBUG_HAL_NIC_RX |
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440 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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441 | if( DEBUG_HAL_NIC_RX < cycle ) |
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442 | printk("\n[%s] thread[%x,%x] enter / READ / %s / chbuf (%x,%x) / cycle %d\n", |
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443 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->name, local_cxy, chbuf, cycle ); |
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444 | #endif |
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445 | // check container state |
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446 | if( container[511] == 0 ) // container empty |
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447 | { |
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448 | // return failure |
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449 | this->nic_cmd.status = 0; |
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450 | this->nic_cmd.error = 0; |
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451 | |
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452 | #if DEBUG_HAL_NIC_RX |
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453 | cycle = (uint32_t)hal_get_cycles(); |
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454 | if( DEBUG_HAL_NIC_RX < cycle ) |
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455 | printk("\n[%s] thread[%x,%x] exit / READ failure : NIC_RX[%d] queue empty / cycle %d\n", |
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456 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->channel , cycle ); |
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457 | #endif |
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458 | } |
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459 | else // container full |
---|
460 | { |
---|
461 | // get packet length from container |
---|
462 | length = container[510]; |
---|
463 | |
---|
464 | // software L2/L3 cache coherence for container DATA |
---|
465 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container) , length ); |
---|
466 | |
---|
467 | // move the packet from container to buffer |
---|
468 | memcpy( buffer , container , length ); |
---|
469 | |
---|
470 | hal_fence(); |
---|
471 | |
---|
472 | // update container STS |
---|
473 | container[511] = 0; |
---|
474 | |
---|
475 | // update current container WID |
---|
476 | chbuf->rid = (index + 1) % CONFIG_SOCK_QUEUES_DEPTH; |
---|
477 | |
---|
478 | // software L2/L3 cache coherence for container STS write |
---|
479 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[511] ), 4 ); |
---|
480 | |
---|
481 | // software L2/L3 cache coherence for chbuf RID write |
---|
482 | if( chdev_dir.iob ) dev_mmc_sync( XPTR ( local_cxy , chbuf ) , 8 ); |
---|
483 | |
---|
484 | // return success |
---|
485 | this->nic_cmd.status = length; |
---|
486 | this->nic_cmd.error = 0; |
---|
487 | |
---|
488 | #if DEBUG_HAL_NIC_RX |
---|
489 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
490 | if( DEBUG_HAL_NIC_RX < cycle ) |
---|
491 | printk("\n[%s] thread[%x,%x] exit / READ success on NIC_RX[%d] queue / len %d / cycle %d\n", |
---|
492 | __FUNCTION__, this->process->pid, this->trdid , dev_ptr->channel , length , cycle ); |
---|
493 | if((DEBUG_HAL_NIC_RX < cycle) && (DEBUG_HAL_NIC_RX & 1)) |
---|
494 | putb("64 first bytes moved from RX queue by NIC driver" , buffer , 64 ); |
---|
495 | #endif |
---|
496 | } |
---|
497 | } |
---|
498 | break; // end READ |
---|
499 | |
---|
500 | ///////////////////////////////////////////////////////////////////// |
---|
501 | case NIC_CMD_GET_KEY: // return channel from IP addr & port |
---|
502 | { |
---|
503 | // get number of NIC channels |
---|
504 | uint32_t channels = LOCAL_CLUSTER->nb_nic_channels; |
---|
505 | |
---|
506 | // get IP address and port from command in thread descriptor |
---|
507 | uint32_t addr = (intptr_t)this->nic_cmd.buffer; |
---|
508 | uint16_t port = (uint16_t)this->nic_cmd.length; |
---|
509 | |
---|
510 | // compute NIC channel index |
---|
511 | uint32_t key = ( ((addr ) & 0xFF) + |
---|
512 | ((addr > 8 ) & 0xFF) + |
---|
513 | ((addr > 16) & 0xFF) + |
---|
514 | ((addr > 24) & 0xFF) + |
---|
515 | ((port ) & 0xFF) + |
---|
516 | ((port > 8 ) & 0xFF) ) % channels; |
---|
517 | |
---|
518 | // return key in "status" and return "error" |
---|
519 | this->nic_cmd.status = key; |
---|
520 | this->nic_cmd.error = 0; |
---|
521 | } |
---|
522 | break; // end GET_KEY |
---|
523 | |
---|
524 | ///////////////////////////////////////////////////////////////////// |
---|
525 | case NIC_CMD_SET_RUN: // activate/desactivate one NIC channel |
---|
526 | { |
---|
527 | // get pointers on NIC peripheral |
---|
528 | xptr_t base_xp = dev_ptr->base; |
---|
529 | uint32_t * base_ptr = GET_PTR( base_xp ); |
---|
530 | cxy_t base_cxy = GET_CXY( base_xp ); |
---|
531 | |
---|
532 | // get "channel" and "run" arguments from the "length" and "status" arguments |
---|
533 | uint32_t channel = this->nic_cmd.length; |
---|
534 | uint32_t run = this->nic_cmd.status; |
---|
535 | |
---|
536 | // build pointers on channel base |
---|
537 | uint32_t * channel_ptr = base_ptr + NIC_CHANNEL_SPAN * channel; |
---|
538 | |
---|
539 | // set new value in NIC_RX_CHANNEL_RUN & NIC_TX_CHANNEL_RUN registers |
---|
540 | hal_remote_s32( XPTR( base_cxy , channel_ptr + NIC_RX_CHANNEL_RUN ) , run ); |
---|
541 | hal_remote_s32( XPTR( base_cxy , channel_ptr + NIC_TX_CHANNEL_RUN ) , run ); |
---|
542 | |
---|
543 | // return "error" |
---|
544 | this->nic_cmd.error = 0; |
---|
545 | } |
---|
546 | break; // end SET_RUN |
---|
547 | |
---|
548 | ///////////////////////////////////////////////////////////////////// |
---|
549 | case NIC_CMD_GET_INSTRU: // diplay packets counters on TXT0 |
---|
550 | { |
---|
551 | // get pointers on NIC peripheral |
---|
552 | xptr_t base_xp = dev_ptr->base; |
---|
553 | uint32_t * base_ptr = GET_PTR( base_xp ); |
---|
554 | cxy_t base_cxy = GET_CXY( base_xp ); |
---|
555 | |
---|
556 | // build pointer on global register base |
---|
557 | uint32_t * global_ptr = base_ptr + NIC_GLOBAL_OFFSET; |
---|
558 | |
---|
559 | uint32_t rx_g2s_received = hal_remote_l32( XPTR( base_cxy , |
---|
560 | global_ptr + NIC_G_NPKT_RX_G2S_RECEIVED )); |
---|
561 | uint32_t rx_g2s_discarded = hal_remote_l32( XPTR( base_cxy , |
---|
562 | global_ptr + NIC_G_NPKT_RX_G2S_DISCARDED )); |
---|
563 | uint32_t rx_des_success = hal_remote_l32( XPTR( base_cxy , |
---|
564 | global_ptr + NIC_G_NPKT_RX_DES_SUCCESS )); |
---|
565 | uint32_t rx_des_too_small = hal_remote_l32( XPTR( base_cxy , |
---|
566 | global_ptr + NIC_G_NPKT_RX_DES_TOO_SMALL )); |
---|
567 | uint32_t rx_des_too_big = hal_remote_l32( XPTR( base_cxy , |
---|
568 | global_ptr + NIC_G_NPKT_RX_DES_TOO_BIG )); |
---|
569 | uint32_t rx_des_mfifo_full = hal_remote_l32( XPTR( base_cxy , |
---|
570 | global_ptr + NIC_G_NPKT_RX_DES_MFIFO_FULL )); |
---|
571 | uint32_t rx_des_crc_fail = hal_remote_l32( XPTR( base_cxy , |
---|
572 | global_ptr + NIC_G_NPKT_RX_DES_CRC_FAIL )); |
---|
573 | uint32_t rx_disp_received = hal_remote_l32( XPTR( base_cxy , |
---|
574 | global_ptr + NIC_G_NPKT_RX_DISP_RECEIVED )); |
---|
575 | uint32_t rx_disp_dst_fail = hal_remote_l32( XPTR( base_cxy , |
---|
576 | global_ptr + NIC_G_NPKT_RX_DISP_DST_FAIL )); |
---|
577 | uint32_t rx_disp_ch_full = hal_remote_l32( XPTR( base_cxy , |
---|
578 | global_ptr + NIC_G_NPKT_RX_DISP_CH_FULL )); |
---|
579 | |
---|
580 | uint32_t tx_disp_received = hal_remote_l32( XPTR( base_cxy , |
---|
581 | global_ptr + NIC_G_NPKT_TX_DISP_RECEIVED )); |
---|
582 | uint32_t tx_disp_too_small = hal_remote_l32( XPTR( base_cxy , |
---|
583 | global_ptr + NIC_G_NPKT_TX_DISP_TOO_SMALL )); |
---|
584 | uint32_t tx_disp_too_big = hal_remote_l32( XPTR( base_cxy , |
---|
585 | global_ptr + NIC_G_NPKT_TX_DISP_TOO_BIG )); |
---|
586 | uint32_t tx_disp_transmit = hal_remote_l32( XPTR( base_cxy , |
---|
587 | global_ptr + NIC_G_NPKT_TX_DISP_TRANSMIT )); |
---|
588 | |
---|
589 | printk("\n*** NIC device Instrumentation ***\n\n" |
---|
590 | " - rx_g2s_received = %d\n" |
---|
591 | " - rx_g2s_discarded = %d\n" |
---|
592 | " - rx_des_success = %d\n" |
---|
593 | " - rx_des_too_small = %d\n" |
---|
594 | " - rx_des_too_big = %d\n" |
---|
595 | " - rx_des_mfifo_full = %d\n" |
---|
596 | " - rx_des_crc_fail = %d\n" |
---|
597 | " - rx_disp_received = %d\n" |
---|
598 | " - rx_disp_dsp_fail = %d\n" |
---|
599 | " - rx_disp_ch_full = %d\n\n" |
---|
600 | " - tx_disp_received = %d\n" |
---|
601 | " - tx_disp_too_small = %d\n" |
---|
602 | " - tx_disp_too_big = %d\n" |
---|
603 | " - tx_disp_transmit = %d\n", |
---|
604 | rx_g2s_received, |
---|
605 | rx_g2s_discarded, |
---|
606 | rx_des_success, |
---|
607 | rx_des_too_small, |
---|
608 | rx_des_too_big, |
---|
609 | rx_des_mfifo_full, |
---|
610 | rx_des_crc_fail, |
---|
611 | rx_disp_received, |
---|
612 | rx_disp_dst_fail, |
---|
613 | rx_disp_ch_full, |
---|
614 | tx_disp_received, |
---|
615 | tx_disp_too_small, |
---|
616 | tx_disp_too_big, |
---|
617 | tx_disp_transmit ); |
---|
618 | |
---|
619 | // return "error" |
---|
620 | this->nic_cmd.error = 0; |
---|
621 | } |
---|
622 | break; // end CLEAR_INSTRU |
---|
623 | |
---|
624 | ///////////////////////////////////////////////////////////////////// |
---|
625 | case NIC_CMD_CLEAR_INSTRU: // reset instrumentation registers |
---|
626 | { |
---|
627 | // get pointers on NIC peripheral |
---|
628 | xptr_t base_xp = dev_ptr->base; |
---|
629 | uint32_t * base_ptr = GET_PTR( base_xp ); |
---|
630 | cxy_t base_cxy = GET_CXY( base_xp ); |
---|
631 | |
---|
632 | // build pointer on relevant NIC register |
---|
633 | uint32_t * reset_ptr = base_ptr + NIC_GLOBAL_OFFSET + NIC_G_NPKT_RESET; |
---|
634 | |
---|
635 | // reset all NIC instrumentation registers |
---|
636 | hal_remote_s32( XPTR( base_cxy , reset_ptr ) , 0 ); |
---|
637 | |
---|
638 | // return "error" |
---|
639 | this->nic_cmd.error = 0; |
---|
640 | } |
---|
641 | break; // end GET_INSTRU |
---|
642 | |
---|
643 | default: |
---|
644 | { |
---|
645 | assert( __FUNCTION__, false, "Unknown command <%x>\n", type ); |
---|
646 | } |
---|
647 | } |
---|
648 | } // end soclib_nic_cmd() |
---|
649 | |
---|
650 | |
---|
651 | ///////////////////////////////////////////////////////////////// |
---|
652 | void __attribute__ ((noinline)) soclib_nic_isr( chdev_t * chdev ) |
---|
653 | { |
---|
654 | // get base, size, channel, is_rx, name, and server from NIC chdev |
---|
655 | xptr_t base_xp = chdev->base; |
---|
656 | uint32_t channel = chdev->channel; |
---|
657 | bool_t is_rx = chdev->is_rx; |
---|
658 | thread_t * server = chdev->server; |
---|
659 | |
---|
660 | // get NIC peripheral cluster and local pointer |
---|
661 | cxy_t nic_cxy = GET_CXY( base_xp ); |
---|
662 | uint32_t * nic_ptr = GET_PTR( base_xp ); |
---|
663 | |
---|
664 | // compute local pointer on state register |
---|
665 | uint32_t * ptr; |
---|
666 | if( is_rx ) ptr = nic_ptr + (NIC_CHANNEL_SPAN * channel) + NIC_RX_CHANNEL_STATE; |
---|
667 | else ptr = nic_ptr + (NIC_CHANNEL_SPAN * channel) + NIC_TX_CHANNEL_STATE; |
---|
668 | |
---|
669 | // read NIC channel status and acknowledge IRQ |
---|
670 | uint32_t status = hal_remote_l32( XPTR( nic_cxy , ptr ) ); |
---|
671 | |
---|
672 | // check status value |
---|
673 | if( status == NIC_CHANNEL_STATUS_ERROR ) // error reported |
---|
674 | { |
---|
675 | |
---|
676 | #if (DEBUG_HAL_NIC_RX || DEBUG_HAL_NIC_TX) |
---|
677 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
678 | printk("\n[%s] error reported for %s / status %d / cycle %d\n", |
---|
679 | __FUNCTION__ , chdev->name , status , cycle ); |
---|
680 | #endif |
---|
681 | server->nic_cmd.error = 1; |
---|
682 | } |
---|
683 | else if( status != NIC_CHANNEL_STATUS_IDLE) // no error but DMA BUSY |
---|
684 | { |
---|
685 | |
---|
686 | #if (DEBUG_HAL_NIC_RX || DEBUG_HAL_NIC_TX) |
---|
687 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
688 | printk("\n[%s] warning reported for %s / status %d / cycle %d\n", |
---|
689 | __FUNCTION__ , chdev->name , status , cycle ); |
---|
690 | #endif |
---|
691 | server->nic_cmd.error = 0; |
---|
692 | } |
---|
693 | else |
---|
694 | { |
---|
695 | |
---|
696 | #if (DEBUG_HAL_NIC_RX || DEBUG_HAL_NIC_TX) |
---|
697 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
698 | printk("\n[%s] irq reported for %s / status %d / cycle %d\n", |
---|
699 | __FUNCTION__ , chdev->name , status , cycle ); |
---|
700 | #endif |
---|
701 | server->nic_cmd.error = 0; |
---|
702 | } |
---|
703 | |
---|
704 | // unblock server thread |
---|
705 | server->nic_cmd.status = status; |
---|
706 | thread_unblock( XPTR( local_cxy , server ) , THREAD_BLOCKED_ISR ); |
---|
707 | |
---|
708 | } // end soclib_nic_isr() |
---|
709 | |
---|