--- /dev/null
+/******************************************************************************
+*
+* Copyright (C) 2014 Xilinx, Inc. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* Use of the Software is limited solely to applications:
+* (a) running on a Xilinx device, or
+* (b) that interact with a Xilinx device through a bus or interconnect.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+* Except as contained in this notice, the name of the Xilinx shall not be used
+* in advertising or otherwise to promote the sale, use or other dealings in
+* this Software without prior written authorization from Xilinx.
+*
+******************************************************************************/
+/*****************************************************************************/
+/**
+*
+* @file xzdma_intr.c
+* @addtogroup zdma_v1_0
+* @{
+*
+* This file contains interrupt related functions of Xilinx ZDMA core.
+* Please see xzdma.h for more details of the driver.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver Who Date Changes
+* ----- ------ -------- ------------------------------------------------------
+* 1.0 vns 2/27/15 First release
+* </pre>
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+
+#include "xzdma.h"
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+
+/**************************** Type Definitions *******************************/
+
+
+/************************** Function Prototypes ******************************/
+
+
+/************************** Variable Definitions *****************************/
+
+
+/************************** Function Definitions *****************************/
+
+
+/*****************************************************************************/
+/**
+*
+* This function is the interrupt handler for the ZDMA core.
+*
+* This handler reads the pending interrupt from Status register, determines the
+* source of the interrupts and calls the respective callbacks for the
+* interrupts that are enabled in IRQ_ENABLE register, and finally clears the
+* interrupts.
+*
+* The application is responsible for connecting this function to the interrupt
+* system. Application beyond this driver is also responsible for providing
+* callbacks to handle interrupts and installing the callbacks using
+* XZDma_SetCallBack() during initialization phase. .
+*
+* @param Instance is a pointer to the XZDma instance to be worked on.
+*
+* @return None.
+*
+* @note To generate interrupt required interrupts should be enabled.
+*
+******************************************************************************/
+void XZDma_IntrHandler(void *Instance)
+{
+ u32 PendingIntr;
+ u32 ErrorStatus;
+ XZDma *InstancePtr = NULL;
+ InstancePtr = (XZDma *)((void *)Instance);
+
+ /* Verify arguments. */
+ Xil_AssertVoid(InstancePtr != NULL);
+
+ /* Get pending interrupts */
+ PendingIntr = (u32)(XZDma_IntrGetStatus(InstancePtr));
+ PendingIntr &= (~XZDma_GetIntrMask(InstancePtr));
+
+ /* ZDMA transfer has completed */
+ ErrorStatus = (PendingIntr) & (XZDMA_IXR_DMA_DONE_MASK);
+ if ((ErrorStatus) != 0U) {
+ XZDma_DisableIntr(InstancePtr, XZDMA_IXR_ALL_INTR_MASK);
+ InstancePtr->ChannelState = XZDMA_IDLE;
+ InstancePtr->DoneHandler(InstancePtr->DoneRef);
+ }
+
+ /* An error has been occurred */
+ ErrorStatus = PendingIntr & (XZDMA_IXR_ERR_MASK);
+ if ((ErrorStatus) != 0U) {
+ if ((ErrorStatus & XZDMA_IXR_DMA_PAUSE_MASK) ==
+ XZDMA_IXR_DMA_PAUSE_MASK) {
+ InstancePtr->ChannelState = XZDMA_PAUSE;
+ }
+ else {
+ if ((ErrorStatus & (XZDMA_IXR_AXI_WR_DATA_MASK |
+ XZDMA_IXR_AXI_RD_DATA_MASK |
+ XZDMA_IXR_AXI_RD_DST_DSCR_MASK |
+ XZDMA_IXR_AXI_RD_SRC_DSCR_MASK)) != 0x00U) {
+ InstancePtr->ChannelState = XZDMA_IDLE;
+ }
+ }
+ InstancePtr->ErrorHandler(InstancePtr->ErrorRef, ErrorStatus);
+ }
+
+ /* Clear pending interrupt(s) */
+ XZDma_IntrClear(InstancePtr, PendingIntr);
+}
+
+/*****************************************************************************/
+/**
+*
+* This routine installs an asynchronous callback function for the given
+* HandlerType.
+*
+* <pre>
+* HandlerType Callback Function Type
+* ----------------------- --------------------------------------------------
+* XZDMA_HANDLER_DONE Done handler
+* XZDMA_HANDLER_ERROR Error handler
+*
+* </pre>
+*
+* @param InstancePtr is a pointer to the XZDma instance to be worked on.
+* @param HandlerType specifies which callback is to be attached.
+* @param CallBackFunc is the address of the callback function.
+* @param CallBackRef is a user data item that will be passed to the
+* callback function when it is invoked.
+*
+* @return
+* - XST_SUCCESS when handler is installed.
+* - XST_INVALID_PARAM when HandlerType is invalid.
+*
+* @note Invoking this function for a handler that already has been
+* installed replaces it with the new handler.
+*
+******************************************************************************/
+s32 XZDma_SetCallBack(XZDma *InstancePtr, XZDma_Handler HandlerType,
+ void *CallBackFunc, void *CallBackRef)
+{
+ s32 Status;
+
+ /* Verify arguments. */
+ Xil_AssertNonvoid(InstancePtr != NULL);
+ Xil_AssertNonvoid(CallBackFunc != NULL);
+ Xil_AssertNonvoid(CallBackRef != NULL);
+ Xil_AssertNonvoid((HandlerType == XZDMA_HANDLER_DONE) ||
+ (HandlerType == XZDMA_HANDLER_ERROR));
+ Xil_AssertNonvoid(InstancePtr->IsReady ==
+ (u32)(XIL_COMPONENT_IS_READY));
+
+ /*
+ * Calls the respective callback function corresponding to
+ * the handler type
+ */
+ switch (HandlerType) {
+ case XZDMA_HANDLER_DONE:
+ InstancePtr->DoneHandler =
+ (XZDma_DoneHandler)((void *)CallBackFunc);
+ InstancePtr->DoneRef = CallBackRef;
+ Status = (XST_SUCCESS);
+ break;
+
+ case XZDMA_HANDLER_ERROR:
+ InstancePtr->ErrorHandler =
+ (XZDma_ErrorHandler)((void *)CallBackFunc);
+ InstancePtr->ErrorRef = CallBackRef;
+ Status = (XST_SUCCESS);
+ break;
+
+ default:
+ Status = (XST_INVALID_PARAM);
+ break;
+ }
+
+ return Status;
+}
+/** @} */
projects / freertos / blobdiff