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   1 /******************************************************************************
   2 *
   3 * Copyright (C) 2004 - 2014 Xilinx, Inc.  All rights reserved.
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining a copy
   6 * of this software and associated documentation files (the "Software"), to deal
   7 * in the Software without restriction, including without limitation the rights
   8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 * copies of the Software, and to permit persons to whom the Software is
  10 * furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice shall be included in
  13 * all copies or substantial portions of the Software.
  14 *
  15 * Use of the Software is limited solely to applications:
  16 * (a) running on a Xilinx device, or
  17 * (b) that interact with a Xilinx device through a bus or interconnect.
  18 *
  19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22 * XILINX  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  24 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25 * SOFTWARE.
  26 *
  27 * Except as contained in this notice, the name of the Xilinx shall not be used
  28 * in advertising or otherwise to promote the sale, use or other dealings in
  29 * this Software without prior written authorization from Xilinx.
  30 *
  31 ******************************************************************************/
  32 /*****************************************************************************/
  33 /**
  34 *
  35 * @file xemaclite_selftest.c
  36 *
  37 * Function(s) in this file are the required functions for the EMAC Lite
  38 * driver sefftest for the hardware.
  39 * See xemaclite.h for a detailed description of the driver.
  40 *
  41 * <pre>
  42 * MODIFICATION HISTORY:
  43 *
  44 * Ver   Who  Date     Changes
  45 * ----- ---- -------- --------------------------------------------------------
  46 * 1.01a ecm  01/31/04 First release
  47 * 1.11a mta  03/21/07 Updated to new coding style
  48 * 3.00a ktn  10/22/09 Updated driver to use the HAL Processor APIs/macros.
  49 * </pre>
  50 ******************************************************************************/
  51
  52 /***************************** Include Files *********************************/
  53
  54 #include "xil_io.h"
  55 #include "xemaclite.h"
  56 #include "xemaclite_i.h"
  57
  58 /************************** Constant Definitions *****************************/
  59
  60 /**************************** Type Definitions *******************************/
  61
  62 /***************** Macros (Inline Functions) Definitions *********************/
  63
  64 /************************** Function Prototypes ******************************/
  65
  66 /************************** Variable Definitions *****************************/
  67
  68 /*****************************************************************************/
  69 /**
  70 *
  71 * Performs a SelfTest on the EmacLite device as follows:
  72 *   - Writes to the mandatory TX buffer and reads back to verify.
  73 *   - If configured, writes to the secondary TX buffer and reads back to verify.
  74 *   - Writes to the mandatory RX buffer and reads back to verify.
  75 *   - If configured, writes to the secondary RX buffer and reads back to verify.
  76 *
  77 *
  78 * @param        InstancePtr is a pointer to the XEmacLite instance .
  79 *
  80 * @return
  81 *               - XST_SUCCESS if the device Passed the Self Test.
  82 *               - XST_FAILURE if any of the data read backs fail.
  83 *
  84 * @note         None.
  85 *
  86 ******************************************************************************/
  87 int XEmacLite_SelfTest(XEmacLite * InstancePtr)
  88 {
  89         u32 BaseAddress;
  90         u8 Index;
  91         u8 TestString[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
  92         u8 ReturnString[4] = { 0x0, 0x0, 0x0, 0x0 };
  93
  94         /*
  95          * Verify that each of the inputs are valid.
  96          */
  97         Xil_AssertNonvoid(InstancePtr != NULL);
  98
  99         /*
 100          * Determine the TX buffer address
 101          */
 102         BaseAddress = InstancePtr->EmacLiteConfig.BaseAddress +
 103                         XEL_TXBUFF_OFFSET;
 104
 105         /*
 106          * Write the TestString to the TX buffer in EMAC Lite then
 107          * back from the EMAC Lite and verify
 108          */
 109         XEmacLite_AlignedWrite(TestString, (u32 *) BaseAddress,
 110                                sizeof(TestString));
 111         XEmacLite_AlignedRead((u32 *) BaseAddress, ReturnString,
 112                               sizeof(ReturnString));
 113
 114         for (Index = 0; Index < 4; Index++) {
 115
 116                 if (ReturnString[Index] != TestString[Index]) {
 117                         return XST_FAILURE;
 118                 }
 119
 120                 /*
 121                  * Zero the return string for the next test
 122                  */
 123                 ReturnString[Index] = 0;
 124         }
 125
 126         /*
 127          * If the second buffer is configured, test it also
 128          */
 129         if (InstancePtr->EmacLiteConfig.TxPingPong != 0) {
 130                 BaseAddress += XEL_BUFFER_OFFSET;
 131                 /*
 132                  * Write the TestString to the optional TX buffer in EMAC Lite
 133                  * then back from the EMAC Lite and verify
 134                  */
 135                 XEmacLite_AlignedWrite(TestString, (u32 *) BaseAddress,
 136                                        sizeof(TestString));
 137                 XEmacLite_AlignedRead((u32 *) BaseAddress, ReturnString,
 138                                       sizeof(ReturnString));
 139
 140                 for (Index = 0; Index < 4; Index++) {
 141
 142                         if (ReturnString[Index] != TestString[Index]) {
 143                                 return XST_FAILURE;
 144                         }
 145
 146                         /*
 147                          * Zero the return string for the next test
 148                          */
 149                         ReturnString[Index] = 0;
 150                 }
 151         }
 152
 153         /*
 154          * Determine the RX buffer address
 155          */
 156         BaseAddress = InstancePtr->EmacLiteConfig.BaseAddress +
 157                                 XEL_RXBUFF_OFFSET;
 158
 159         /*
 160          * Write the TestString to the RX buffer in EMAC Lite then
 161          * back from the EMAC Lite and verify
 162          */
 163         XEmacLite_AlignedWrite(TestString, (u32 *) (BaseAddress),
 164                                sizeof(TestString));
 165         XEmacLite_AlignedRead((u32 *) (BaseAddress), ReturnString,
 166                               sizeof(ReturnString));
 167
 168         for (Index = 0; Index < 4; Index++) {
 169
 170                 if (ReturnString[Index] != TestString[Index]) {
 171                         return XST_FAILURE;
 172                 }
 173
 174                 /*
 175                  * Zero the return string for the next test
 176                  */
 177                 ReturnString[Index] = 0;
 178         }
 179
 180         /*
 181          * If the second buffer is configured, test it also
 182          */
 183         if (InstancePtr->EmacLiteConfig.RxPingPong != 0) {
 184                 BaseAddress += XEL_BUFFER_OFFSET;
 185                 /*
 186                  * Write the TestString to the optional RX buffer in EMAC Lite
 187                  * then back from the EMAC Lite and verify
 188                  */
 189                 XEmacLite_AlignedWrite(TestString, (u32 *) BaseAddress,
 190                                        sizeof(TestString));
 191                 XEmacLite_AlignedRead((u32 *) BaseAddress, ReturnString,
 192                                       sizeof(ReturnString));
 193
 194                 for (Index = 0; Index < 4; Index++) {
 195
 196                         if (ReturnString[Index] != TestString[Index]) {
 197                                 return XST_FAILURE;
 198                         }
 199
 200                         /*
 201                          * Zero the return string for the next test
 202                          */
 203                         ReturnString[Index] = 0;
 204                 }
 205         }
 206
 207         return XST_SUCCESS;
 208 }