2 FreeRTOS.org V5.1.0 - Copyright (C) 2003-2008 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 ***************************************************************************
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29 * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
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30 * and even write all or part of your application on your behalf. *
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31 * See http://www.OpenRTOS.com for details of the services we provide to *
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32 * expedite your project. *
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34 ***************************************************************************
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35 ***************************************************************************
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37 Please ensure to read the configuration and relevant port sections of the
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38 online documentation.
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40 http://www.FreeRTOS.org - Documentation, latest information, license and
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43 http://www.SafeRTOS.com - A version that is certified for use in safety
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46 http://www.OpenRTOS.com - Commercial support, development, porting,
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47 licensing and training services.
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49 /* Standard includes. */
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52 /* Library includes. */
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53 #include "91x_lib.h"
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54 #include "91x_enet.h"
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56 /* Scheduler includes. */
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57 #include "FreeRTOS.h"
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63 #include "uip_arp.h"
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66 #include "clock-arch.h"
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68 /*-----------------------------------------------------------*/
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70 /* MAC address configuration. */
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71 #define uipMAC_ADDR0 0x00
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72 #define uipMAC_ADDR1 0x12
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73 #define uipMAC_ADDR2 0x13
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74 #define uipMAC_ADDR3 0x14
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75 #define uipMAC_ADDR4 0x15
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76 #define uipMAC_ADDR5 0x20
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78 /* IP address configuration. */
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79 #define uipIP_ADDR0 172
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80 #define uipIP_ADDR1 25
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81 #define uipIP_ADDR2 218
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82 #define uipIP_ADDR3 11
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84 /* Netmask configuration. */
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85 #define uipNET_MASK0 255
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86 #define uipNET_MASK1 255
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87 #define uipNET_MASK2 255
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88 #define uipNET_MASK3 0
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90 /* Gateway address configuration. */
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91 #define uipGATEWAY_ADDR0 172
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92 #define uipGATEWAY_ADDR1 25
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93 #define uipGATEWAY_ADDR2 218
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94 #define uipGATEWAY_ADDR3 1
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96 /* Shortcut to the header within the Rx buffer. */
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97 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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99 /* uIP update frequencies. */
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100 #define uipMAX_BLOCK_TIME (configTICK_RATE_HZ / 4)
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102 /* Interrupt status bit definition. */
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103 #define uipDMI_RX_CURRENT_DONE 0x8000
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105 /* If no buffers are available, then wait this long before looking again. */
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106 #define uipBUFFER_WAIT_DELAY ( 10 / portTICK_RATE_MS )
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107 #define uipBUFFER_WAIT_ATTEMPTS ( 10 )
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109 /* Standard constant. */
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110 #define uipTOTAL_FRAME_HEADER_SIZE 54
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112 /*-----------------------------------------------------------*/
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115 * Send the uIP buffer to the MAC.
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117 static void prvENET_Send(void);
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120 * Setup the MAC address in the MAC itself, and in the uIP stack.
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122 static void prvSetMACAddress( void );
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125 * Used to return a pointer to the next buffer to be used.
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127 extern unsigned portCHAR *pcGetNextBuffer( void );
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130 * Port functions required by the uIP stack.
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132 void clock_init( void );
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133 clock_time_t clock_time( void );
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135 /*-----------------------------------------------------------*/
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137 /* The semaphore used by the ISR to wake the uIP task. */
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138 xSemaphoreHandle xSemaphore = NULL;
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140 /*-----------------------------------------------------------*/
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142 void clock_init(void)
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144 /* This is done when the scheduler starts. */
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146 /*-----------------------------------------------------------*/
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148 clock_time_t clock_time( void )
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150 return xTaskGetTickCount();
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152 /*-----------------------------------------------------------*/
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154 void vuIP_Task( void *pvParameters )
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157 uip_ipaddr_t xIPAddr;
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158 struct timer periodic_timer, arp_timer;
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160 /* Create the semaphore used by the ISR to wake this task. */
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161 vSemaphoreCreateBinary( xSemaphore );
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163 /* Initialise the uIP stack. */
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164 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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165 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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167 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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168 uip_sethostaddr( xIPAddr );
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169 uip_ipaddr( xIPAddr, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
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170 uip_setnetmask( xIPAddr );
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171 uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
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172 uip_setdraddr( xIPAddr );
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175 /* Initialise the MAC. */
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176 ENET_InitClocksGPIO();
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178 portENTER_CRITICAL();
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181 prvSetMACAddress();
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182 VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
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183 VIC_ITCmd( ENET_ITLine, ENABLE );
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184 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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185 ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
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187 portEXIT_CRITICAL();
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192 /* Is there received data ready to be processed? */
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193 uip_len = ENET_HandleRxPkt( uip_buf );
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197 /* Standard uIP loop taken from the uIP manual. */
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198 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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203 /* If the above function invocation resulted in data that
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204 should be sent out on the network, the global variable
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205 uip_len is set to a value > 0. */
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212 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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216 /* If the above function invocation resulted in data that
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217 should be sent out on the network, the global variable
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218 uip_len is set to a value > 0. */
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227 if( timer_expired( &periodic_timer ) )
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229 timer_reset( &periodic_timer );
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230 for( i = 0; i < UIP_CONNS; i++ )
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234 /* If the above function invocation resulted in data that
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235 should be sent out on the network, the global variable
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236 uip_len is set to a value > 0. */
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244 /* Call the ARP timer function every 10 seconds. */
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245 if( timer_expired( &arp_timer ) )
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247 timer_reset( &arp_timer );
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253 /* We did not receive a packet, and there was no periodic
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254 processing to perform. Block for a fixed period. If a packet
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255 is received during this period we will be woken by the ISR
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256 giving us the Semaphore. */
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257 xSemaphoreTake( xSemaphore, configTICK_RATE_HZ / 2 );
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262 /*-----------------------------------------------------------*/
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264 static void prvENET_Send(void)
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267 static unsigned portCHAR *pcTxData;
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269 /* Get a DMA buffer into which we can write the data to send. */
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270 for( i = 0; i < uipBUFFER_WAIT_ATTEMPTS; i++ )
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272 pcTxData = pcGetNextBuffer();
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280 vTaskDelay( uipBUFFER_WAIT_DELAY );
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286 /* Copy the header into the Tx buffer. */
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287 memcpy( ( void * ) pcTxData, ( void * ) uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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288 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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290 memcpy( ( void * ) &( pcTxData[ uipTOTAL_FRAME_HEADER_SIZE ] ), ( void * ) uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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293 ENET_TxPkt( &pcTxData, uip_len );
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296 /*-----------------------------------------------------------*/
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298 void ENET_IRQHandler(void)
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300 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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302 /* Give the semaphore in case the uIP task needs waking. */
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303 xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
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305 /* Clear the interrupt. */
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306 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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308 /* Switch tasks if necessary. */
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309 portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
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311 /*-----------------------------------------------------------*/
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313 static void prvSetMACAddress( void )
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315 struct uip_eth_addr xAddr;
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317 /* Configure the MAC address in the uIP stack. */
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318 xAddr.addr[ 0 ] = uipMAC_ADDR0;
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319 xAddr.addr[ 1 ] = uipMAC_ADDR1;
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320 xAddr.addr[ 2 ] = uipMAC_ADDR2;
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321 xAddr.addr[ 3 ] = uipMAC_ADDR3;
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322 xAddr.addr[ 4 ] = uipMAC_ADDR4;
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323 xAddr.addr[ 5 ] = uipMAC_ADDR5;
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324 uip_setethaddr( xAddr );
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326 /* Write the MAC address to the MAC. */
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327 ENET_MAC->MAL = ( uipMAC_ADDR3 << 24 ) | ( uipMAC_ADDR2 << 16 ) | ( uipMAC_ADDR1 << 8 ) | ( uipMAC_ADDR0 );
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328 ENET_MAC->MAH = ( uipMAC_ADDR5 << 8 ) | ( uipMAC_ADDR4 );
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