2 FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License (version 2) as published by the
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8 Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS without being obliged to provide the
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11 source code for proprietary components outside of the FreeRTOS kernel.
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12 Alternative commercial license and support terms are also available upon
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13 request. See the licensing section of http://www.FreeRTOS.org for full
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16 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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21 You should have received a copy of the GNU General Public License along
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22 with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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23 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 ***************************************************************************
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28 * The FreeRTOS eBook and reference manual are available to purchase for a *
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29 * small fee. Help yourself get started quickly while also helping the *
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30 * FreeRTOS project! See http://www.FreeRTOS.org/Documentation for details *
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32 ***************************************************************************
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36 Please ensure to read the configuration and relevant port sections of the
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37 online documentation.
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39 http://www.FreeRTOS.org - Documentation, latest information, license and
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42 http://www.SafeRTOS.com - A version that is certified for use in safety
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45 http://www.OpenRTOS.com - Commercial support, development, porting,
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46 licensing and training services.
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48 /* Standard includes. */
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51 /* Library includes. */
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52 #include "91x_lib.h"
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53 #include "91x_enet.h"
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55 /* Scheduler includes. */
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56 #include "FreeRTOS.h"
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62 #include "uip_arp.h"
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65 #include "clock-arch.h"
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67 /*-----------------------------------------------------------*/
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69 /* MAC address configuration. */
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70 #define uipMAC_ADDR0 0x00
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71 #define uipMAC_ADDR1 0x12
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72 #define uipMAC_ADDR2 0x13
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73 #define uipMAC_ADDR3 0x14
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74 #define uipMAC_ADDR4 0x15
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75 #define uipMAC_ADDR5 0x20
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77 /* IP address configuration. */
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78 #define uipIP_ADDR0 172
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79 #define uipIP_ADDR1 25
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80 #define uipIP_ADDR2 218
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81 #define uipIP_ADDR3 11
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83 /* Netmask configuration. */
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84 #define uipNET_MASK0 255
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85 #define uipNET_MASK1 255
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86 #define uipNET_MASK2 255
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87 #define uipNET_MASK3 0
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89 /* Gateway address configuration. */
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90 #define uipGATEWAY_ADDR0 172
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91 #define uipGATEWAY_ADDR1 25
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92 #define uipGATEWAY_ADDR2 218
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93 #define uipGATEWAY_ADDR3 1
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95 /* Shortcut to the header within the Rx buffer. */
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96 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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98 /* uIP update frequencies. */
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99 #define uipMAX_BLOCK_TIME (configTICK_RATE_HZ / 4)
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101 /* Interrupt status bit definition. */
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102 #define uipDMI_RX_CURRENT_DONE 0x8000
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104 /* If no buffers are available, then wait this long before looking again. */
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105 #define uipBUFFER_WAIT_DELAY ( 10 / portTICK_RATE_MS )
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106 #define uipBUFFER_WAIT_ATTEMPTS ( 10 )
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108 /* Standard constant. */
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109 #define uipTOTAL_FRAME_HEADER_SIZE 54
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111 /*-----------------------------------------------------------*/
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114 * Send the uIP buffer to the MAC.
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116 static void prvENET_Send(void);
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119 * Setup the MAC address in the MAC itself, and in the uIP stack.
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121 static void prvSetMACAddress( void );
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124 * Used to return a pointer to the next buffer to be used.
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126 extern unsigned char *pcGetNextBuffer( void );
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129 * Port functions required by the uIP stack.
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131 void clock_init( void );
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132 clock_time_t clock_time( void );
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134 /*-----------------------------------------------------------*/
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136 /* The semaphore used by the ISR to wake the uIP task. */
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137 xSemaphoreHandle xSemaphore = NULL;
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139 /*-----------------------------------------------------------*/
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141 void clock_init(void)
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143 /* This is done when the scheduler starts. */
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145 /*-----------------------------------------------------------*/
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147 clock_time_t clock_time( void )
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149 return xTaskGetTickCount();
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151 /*-----------------------------------------------------------*/
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153 void vuIP_Task( void *pvParameters )
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156 uip_ipaddr_t xIPAddr;
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157 struct timer periodic_timer, arp_timer;
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159 /* Create the semaphore used by the ISR to wake this task. */
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160 vSemaphoreCreateBinary( xSemaphore );
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162 /* Initialise the uIP stack. */
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163 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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164 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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166 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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167 uip_sethostaddr( xIPAddr );
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168 uip_ipaddr( xIPAddr, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
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169 uip_setnetmask( xIPAddr );
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170 uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
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171 uip_setdraddr( xIPAddr );
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174 /* Initialise the MAC. */
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175 ENET_InitClocksGPIO();
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177 portENTER_CRITICAL();
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180 prvSetMACAddress();
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181 VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
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182 VIC_ITCmd( ENET_ITLine, ENABLE );
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183 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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184 ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
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186 portEXIT_CRITICAL();
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191 /* Is there received data ready to be processed? */
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192 uip_len = ENET_HandleRxPkt( uip_buf );
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196 /* Standard uIP loop taken from the uIP manual. */
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197 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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202 /* If the above function invocation resulted in data that
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203 should be sent out on the network, the global variable
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204 uip_len is set to a value > 0. */
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211 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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215 /* If the above function invocation resulted in data that
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216 should be sent out on the network, the global variable
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217 uip_len is set to a value > 0. */
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226 if( timer_expired( &periodic_timer ) )
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228 timer_reset( &periodic_timer );
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229 for( i = 0; i < UIP_CONNS; i++ )
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233 /* If the above function invocation resulted in data that
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234 should be sent out on the network, the global variable
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235 uip_len is set to a value > 0. */
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243 /* Call the ARP timer function every 10 seconds. */
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244 if( timer_expired( &arp_timer ) )
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246 timer_reset( &arp_timer );
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252 /* We did not receive a packet, and there was no periodic
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253 processing to perform. Block for a fixed period. If a packet
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254 is received during this period we will be woken by the ISR
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255 giving us the Semaphore. */
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256 xSemaphoreTake( xSemaphore, configTICK_RATE_HZ / 2 );
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261 /*-----------------------------------------------------------*/
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263 static void prvENET_Send(void)
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266 static unsigned char *pcTxData;
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268 /* Get a DMA buffer into which we can write the data to send. */
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269 for( i = 0; i < uipBUFFER_WAIT_ATTEMPTS; i++ )
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271 pcTxData = pcGetNextBuffer();
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279 vTaskDelay( uipBUFFER_WAIT_DELAY );
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285 /* Copy the header into the Tx buffer. */
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286 memcpy( ( void * ) pcTxData, ( void * ) uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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287 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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289 memcpy( ( void * ) &( pcTxData[ uipTOTAL_FRAME_HEADER_SIZE ] ), ( void * ) uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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292 ENET_TxPkt( &pcTxData, uip_len );
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295 /*-----------------------------------------------------------*/
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297 void ENET_IRQHandler(void)
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299 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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301 /* Give the semaphore in case the uIP task needs waking. */
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302 xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
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304 /* Clear the interrupt. */
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305 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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307 /* Switch tasks if necessary. */
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308 portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
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310 /*-----------------------------------------------------------*/
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312 static void prvSetMACAddress( void )
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314 struct uip_eth_addr xAddr;
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316 /* Configure the MAC address in the uIP stack. */
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317 xAddr.addr[ 0 ] = uipMAC_ADDR0;
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318 xAddr.addr[ 1 ] = uipMAC_ADDR1;
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319 xAddr.addr[ 2 ] = uipMAC_ADDR2;
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320 xAddr.addr[ 3 ] = uipMAC_ADDR3;
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321 xAddr.addr[ 4 ] = uipMAC_ADDR4;
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322 xAddr.addr[ 5 ] = uipMAC_ADDR5;
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323 uip_setethaddr( xAddr );
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325 /* Write the MAC address to the MAC. */
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326 ENET_MAC->MAL = ( uipMAC_ADDR3 << 24 ) | ( uipMAC_ADDR2 << 16 ) | ( uipMAC_ADDR1 << 8 ) | ( uipMAC_ADDR0 );
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327 ENET_MAC->MAH = ( uipMAC_ADDR5 << 8 ) | ( uipMAC_ADDR4 );
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