| /****************************************************************************** |
| * |
| * 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 |
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| * 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 xcsudma_intr.c |
| * @addtogroup csudma_v1_2 |
| * @{ |
| * |
| * This file contains interrupt related functions of Xilinx CSU_DMA core. |
| * Please see xcsudma.h for more details of the driver. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- ------ -------- --------------------------------------------------- |
| * 1.0 vnsld 22/10/14 First release |
| * </pre> |
| * |
| ******************************************************************************/ |
| |
| /***************************** Include Files *********************************/ |
| |
| #include "xcsudma.h" |
| |
| /************************** Function Prototypes ******************************/ |
| |
| |
| /************************** Function Definitions *****************************/ |
| |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function returns interrupt status read from Interrupt Status Register. |
| * Use the XCSUDMA_IXR_*_MASK constants defined in xcsudma_hw.h to interpret the |
| * returned value. |
| * |
| * @param InstancePtr is a pointer to XCsuDma instance to be worked on. |
| * @param Channel represents the type of channel either it is Source or |
| * Destination. |
| * Source channel - XCSUDMA_SRC_CHANNEL |
| * Destination Channel - XCSUDMA_DST_CHANNEL |
| * |
| * @return The pending interrupts of the CSU_DMA. Use th following masks |
| * to interpret the returned value. |
| * XCSUDMA_IXR_SRC_MASK - For Source channel |
| * XCSUDMA_IXR_DST_MASK - For Destination channel |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| u32 XCsuDma_IntrGetStatus(XCsuDma *InstancePtr, XCsuDma_Channel Channel) |
| { |
| u32 Data; |
| |
| /* Verify arguments */ |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid((Channel == (XCSUDMA_SRC_CHANNEL)) || |
| (Channel == (XCSUDMA_DST_CHANNEL))); |
| |
| Data = XCsuDma_ReadReg(InstancePtr->Config.BaseAddress, |
| (u32)(XCSUDMA_I_STS_OFFSET) + |
| ((u32)Channel * (u32)(XCSUDMA_OFFSET_DIFF))); |
| |
| return Data; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function clears interrupt(s). Every bit set in Interrupt Status |
| * Register indicates that a specific type of interrupt is occurring, and this |
| * function clears one or more interrupts by writing a bit mask to Interrupt |
| * Clear Register. |
| * |
| * @param InstancePtr is a pointer to XCsuDma instance to be worked on. |
| * @param Channel represents the type of channel either it is Source or |
| * Destination. |
| * Source channel - XCSUDMA_SRC_CHANNEL |
| * Destination Channel - XCSUDMA_DST_CHANNEL |
| * @param Mask is the mask to clear. Bit positions of 1 will be cleared. |
| * Bit positions of 0 will not change the previous interrupt |
| * status. This mask is formed by OR'ing XCSUDMA_IXR_* bits |
| * defined in xcsudma_hw.h. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void XCsuDma_IntrClear(XCsuDma *InstancePtr, XCsuDma_Channel Channel, u32 Mask) |
| { |
| |
| |
| /* Verify arguments */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid((Channel == (XCSUDMA_SRC_CHANNEL)) || |
| (Channel == (XCSUDMA_DST_CHANNEL))); |
| if (Channel == (XCSUDMA_SRC_CHANNEL)) { |
| XCsuDma_WriteReg(InstancePtr->Config.BaseAddress, |
| (u32)(XCSUDMA_I_STS_OFFSET), |
| (Mask & (u32)(XCSUDMA_IXR_SRC_MASK))); |
| } |
| else { |
| XCsuDma_WriteReg(InstancePtr->Config.BaseAddress, |
| ((u32)(XCSUDMA_I_STS_OFFSET) + |
| ((u32)Channel * (u32)(XCSUDMA_OFFSET_DIFF))), |
| (Mask & (u32)(XCSUDMA_IXR_DST_MASK))); |
| } |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function enables the interrupt(s). Use the XCSUDMA_IXR_*_MASK constants |
| * defined in xcsudma_hw.h to create the bit-mask to enable interrupts. |
| * |
| * @param InstancePtr is a pointer to XCsuDma instance to be worked on. |
| * @param Channel represents the type of channel either it is Source or |
| * Destination. |
| * Source channel - XCSUDMA_SRC_CHANNEL |
| * Destination Channel - XCSUDMA_DST_CHANNEL |
| * @param Mask contains interrupts to be enabled. |
| * - Bit positions of 1 will be enabled. |
| * This mask is formed by OR'ing XCSUDMA_IXR_*_MASK bits defined |
| * in xcsudma_hw.h. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void XCsuDma_EnableIntr(XCsuDma *InstancePtr, XCsuDma_Channel Channel, |
| u32 Mask) |
| { |
| u32 Data; |
| |
| /* Verify arguments */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid((Channel == (XCSUDMA_SRC_CHANNEL)) || |
| (Channel == (XCSUDMA_DST_CHANNEL))); |
| |
| if (Channel == (XCSUDMA_SRC_CHANNEL)) { |
| Data = Mask & (u32)(XCSUDMA_IXR_SRC_MASK); |
| } |
| else { |
| Data = Mask & (u32)(XCSUDMA_IXR_DST_MASK); |
| } |
| /* |
| * Write the mask to the IER Register |
| */ |
| XCsuDma_WriteReg(InstancePtr->Config.BaseAddress, |
| ((u32)(XCSUDMA_I_EN_OFFSET) + |
| ((u32)Channel * (u32)(XCSUDMA_OFFSET_DIFF))), Data); |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function disables the interrupt(s). Use the XCSUDMA_IXR_*_MASK constants |
| * defined in xcsudma_hw.h to create the bit-mask to disable interrupts. |
| * |
| * @param InstancePtr is a pointer to XCsuDma instance to be worked on. |
| * @param Channel represents the type of channel either it is Source or |
| * Destination. |
| * Source channel - XCSUDMA_SRC_CHANNEL |
| * Destination Channel - XCSUDMA_DST_CHANNEL |
| * @param Mask contains interrupts to be disabled. |
| * - Bit positions of 1 will be disabled. |
| * This mask is formed by OR'ing XCSUDMA_IXR_*_MASK bits defined |
| * in xcsudma_hw.h. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void XCsuDma_DisableIntr(XCsuDma *InstancePtr, XCsuDma_Channel Channel, |
| u32 Mask) |
| { |
| u32 Data; |
| |
| /* Verify arguments */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid((Channel == (XCSUDMA_SRC_CHANNEL)) || |
| (Channel == (XCSUDMA_DST_CHANNEL))); |
| |
| if (Channel == XCSUDMA_SRC_CHANNEL) { |
| Data = (Mask) & (u32)(XCSUDMA_IXR_SRC_MASK); |
| } |
| else { |
| Data = (Mask) & (u32)(XCSUDMA_IXR_DST_MASK); |
| } |
| |
| /* |
| * Write the mask to the IDR Register |
| */ |
| XCsuDma_WriteReg(InstancePtr->Config.BaseAddress, |
| ((u32)(XCSUDMA_I_DIS_OFFSET) + |
| ((u32)Channel * (u32)(XCSUDMA_OFFSET_DIFF))), Data); |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function returns the interrupt mask to know which interrupts are |
| * enabled and which of them were disaled. |
| * |
| * @param InstancePtr is a pointer to XCsuDma instance to be worked on. |
| * @param Channel represents the type of channel either it is Source or |
| * Destination. |
| * Source channel - XCSUDMA_SRC_CHANNEL |
| * Destination Channel - XCSUDMA_DST_CHANNEL |
| * |
| * @return The current interrupt mask. The mask indicates which interrupts |
| * are enabled/disabled. |
| * 0 bit represents .....corresponding interrupt is enabled. |
| * 1 bit represents .....Corresponding interrupt is disabled. |
| * To interpret returned mask use |
| * XCSUDMA_IXR_SRC_MASK........For source channel |
| * XCSUDMA_IXR_DST_MASK........For destination channel |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| u32 XCsuDma_GetIntrMask(XCsuDma *InstancePtr, XCsuDma_Channel Channel) |
| { |
| |
| /* Verify arguments */ |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid((Channel == (XCSUDMA_SRC_CHANNEL)) || |
| (Channel == (XCSUDMA_DST_CHANNEL))); |
| |
| /* |
| * Read the Interrupt Mask register |
| */ |
| return (XCsuDma_ReadReg(InstancePtr->Config.BaseAddress, |
| ((u32)(XCSUDMA_I_MASK_OFFSET) + |
| ((u32)Channel * (u32)(XCSUDMA_OFFSET_DIFF))))); |
| } |
| /** @} */ |
