332 lines
9.5 KiB
C
332 lines
9.5 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xzdma_simple_example.c
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*
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* This file contains the example using XZDma driver to do simple data transfer
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* in Normal mode on ZDMA device for 1MB data transfer.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ------ -------- ------------------------------------------------------
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* 1.0 vns 2/27/15 First release
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* </pre>
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "xzdma.h"
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#include "xparameters.h"
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#include "xscugic.h"
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#include "xil_cache.h"
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/************************** Function Prototypes ******************************/
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int XZDma_SimpleExample(u16 DeviceId);
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static int SetupInterruptSystem(XScuGic *IntcInstancePtr,
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XZDma *InstancePtr, u16 IntrId);
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static void DoneHandler(void *CallBackRef);
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/************************** Constant Definitions ******************************/
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/*
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* The following constants map to the XPAR parameters created in the
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* xparameters.h file. They are defined here such that a user can easily
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* change all the needed parameters in one place.
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*/
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#define ZDMA_DEVICE_ID XPAR_XZDMA_0_DEVICE_ID /* ZDMA device Id */
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#define ZDMA_INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
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/**< SCUGIC Device ID */
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#define ZDMA_INTR_DEVICE_ID XPAR_XADMAPS_0_INTR /**< ZDMA Interrupt Id */
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#define SIZE 1000000 /**< Size of the data to be transferred */
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#define TESTVALUE 0x1230 /**< For writing into source buffer */
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/**************************** Type Definitions *******************************/
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/************************** Variable Definitions *****************************/
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XZDma ZDma; /**<Instance of the ZDMA Device */
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XScuGic Intc; /**< XIntc Instance */
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u32 *DstBuf = (u32 *)0x3C000000; /**< Pointer to destination buffer */
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u32 *SrcBuf = (u32 *)0x00200000; /**< Pointer to source buffer */
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u8 Done = 0; /**< Done flag */
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/*****************************************************************************/
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/**
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*
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* Main function to call the example.
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*
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* @return
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* - XST_SUCCESS if successful.
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* - XST_FAILURE if failed.
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*
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* @note None.
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*
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******************************************************************************/
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int main(void)
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{
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int Status;
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/* Run the simple example */
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Status = XZDma_SimpleExample((u16)ZDMA_DEVICE_ID);
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if (Status != XST_SUCCESS) {
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xil_printf("ZDMA Simple Example Failed\r\n");
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return XST_FAILURE;
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}
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xil_printf("Successfully ran ZDMA Simple Example\r\n");
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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*
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* This function does a test of the data transfer in simple mode of normal mode
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* on the ZDMA driver.
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*
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* @param DeviceId is the XPAR_<ZDMA Instance>_DEVICE_ID value from
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* xparameters.h.
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*
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* @return
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* - XST_SUCCESS if successful.
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* - XST_FAILURE if failed.
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*
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* @note None.
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*
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******************************************************************************/
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int XZDma_SimpleExample(u16 DeviceId)
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{
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int Status;
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XZDma_Config *Config;
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XZDma_DataConfig Configure; /**< Configuration values */
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XZDma_Transfer Data;
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u32 Index;
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u32 Value;
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/*
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* Initialize the ZDMA driver so that it's ready to use.
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* Look up the configuration in the config table,
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* then initialize it.
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*/
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Config = XZDma_LookupConfig(DeviceId);
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if (NULL == Config) {
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return XST_FAILURE;
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}
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Status = XZDma_CfgInitialize(&ZDma, Config, Config->BaseAddress);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/*
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* Performs the self-test to check hardware build.
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*/
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Status = XZDma_SelfTest(&ZDma);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/* Filling the buffer for data transfer */
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Value = TESTVALUE;
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for (Index = 0; Index < SIZE/4; Index++) {
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*(SrcBuf +Index) = Value++;
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}
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/*
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* Invalidating destination address and flushing
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* source address in cache
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*/
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Xil_DCacheFlushRange((INTPTR)SrcBuf, SIZE);
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Xil_DCacheInvalidateRange((INTPTR)DstBuf, SIZE);
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/* ZDMA has set in simple transfer of Normal mode */
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Status = XZDma_SetMode(&ZDma, FALSE, XZDMA_NORMAL_MODE);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/* Interrupt call back has been set */
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XZDma_SetCallBack(&ZDma, XZDMA_HANDLER_DONE,
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(void *)DoneHandler, &ZDma);
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/*
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* Connect to the interrupt controller.
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*/
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Status = SetupInterruptSystem(&Intc, &(ZDma),
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ZDMA_INTR_DEVICE_ID);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/* Enable required interrupts */
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XZDma_EnableIntr(&ZDma, (XZDMA_IXR_DMA_DONE_MASK));
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/* Configuration settings */
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Configure.OverFetch = 1;
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Configure.SrcIssue = 0x1F;
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Configure.SrcBurstType = XZDMA_INCR_BURST;
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Configure.SrcBurstLen = 0xF;
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Configure.DstBurstType = XZDMA_INCR_BURST;
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Configure.DstBurstLen = 0xF;
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Configure.SrcCache = 0x2;
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Configure.DstCache = 0x2;
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Configure.SrcQos = 0;
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Configure.DstQos = 0;
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XZDma_SetChDataConfig(&ZDma, &Configure);
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/*
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* Transfer elements
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*/
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Data.DstAddr = (UINTPTR)DstBuf;
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Data.DstCoherent = 1;
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Data.Pause = 0;
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Data.SrcAddr = (UINTPTR)SrcBuf;
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Data.SrcCoherent = 1;
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Data.Size = SIZE; /* Size in bytes */
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XZDma_Start(&ZDma, &Data, 1); /* Initiates the data transfer */
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while (Done == 0); /* Wait till DMA done interrupt generated */
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/* Checking the data transferred */
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for (Index = 0; Index < SIZE/4; Index++) {
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if (SrcBuf[Index] != DstBuf[Index]) {
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return XST_FAILURE;
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}
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}
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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* This function sets up the interrupt system so interrupts can occur for the
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* ZDMA. This function is application-specific. The user should modify this
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* function to fit the application.
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*
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* @param IntcInstancePtr is a pointer to the instance of the INTC.
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* @param InstancePtr contains a pointer to the instance of the ZDMA
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* driver which is going to be connected to the interrupt
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* controller.
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* @param IntrId is the interrupt Id and is typically
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* XPAR_<ZDMA_instance>_INTR value from xparameters.h.
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*
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* @return
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* - XST_SUCCESS if successful
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* - XST_FAILURE if failed
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*
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* @note None.
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*
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****************************************************************************/
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int SetupInterruptSystem(XScuGic *IntcInstancePtr,
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XZDma *InstancePtr,
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u16 IntrId)
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{
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int Status;
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#ifndef TESTAPP_GEN
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XScuGic_Config *IntcConfig; /* Config for interrupt controller */
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/*
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* Initialize the interrupt controller driver
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*/
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IntcConfig = XScuGic_LookupConfig(ZDMA_INTC_DEVICE_ID);
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if (NULL == IntcConfig) {
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return XST_FAILURE;
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}
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Status = XScuGic_CfgInitialize(IntcInstancePtr, IntcConfig,
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IntcConfig->CpuBaseAddress);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/*
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* Connect the interrupt controller interrupt handler to the
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* hardware interrupt handling logic in the processor.
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*/
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Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
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(Xil_ExceptionHandler) XScuGic_InterruptHandler,
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IntcInstancePtr);
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#endif
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/*
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* Connect a device driver handler that will be called when an
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* interrupt for the device occurs, the device driver handler
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* performs the specific interrupt processing for the device
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*/
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Status = XScuGic_Connect(IntcInstancePtr, IntrId,
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(Xil_ExceptionHandler) XZDma_IntrHandler,
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(void *) InstancePtr);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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/*
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* Enable the interrupt for the device
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*/
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XScuGic_Enable(IntcInstancePtr, IntrId);
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/*
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* Enable interrupts
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*/
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Xil_ExceptionEnableMask(XIL_EXCEPTION_IRQ);
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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* This static function handles ZDMA Done interrupts.
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*
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* @param CallBackRef is the callback reference passed from the interrupt
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* handler, which in our case is a pointer to the driver instance.
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*
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* @return None.
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*
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* @note None.
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*
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******************************************************************************/
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static void DoneHandler(void *CallBackRef)
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{
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Done = 1;
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}
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