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Diffstat (limited to 'FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/BSP/microblaze_0/libsrc/tmrctr_v3_0/src/xtmrctr_intr.c')
| -rw-r--r-- | FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/BSP/microblaze_0/libsrc/tmrctr_v3_0/src/xtmrctr_intr.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/BSP/microblaze_0/libsrc/tmrctr_v3_0/src/xtmrctr_intr.c b/FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/BSP/microblaze_0/libsrc/tmrctr_v3_0/src/xtmrctr_intr.c new file mode 100644 index 000000000..f36fb0bd3 --- /dev/null +++ b/FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/BSP/microblaze_0/libsrc/tmrctr_v3_0/src/xtmrctr_intr.c @@ -0,0 +1,230 @@ +/****************************************************************************** +* +* Copyright (C) 2002 - 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 xtmrctr_intr.c +* +* Contains interrupt-related functions for the XTmrCtr component. +* +* <pre> +* MODIFICATION HISTORY: +* +* Ver Who Date Changes +* ----- ---- -------- ----------------------------------------------- +* 1.00b jhl 02/06/02 First release +* 1.10b mta 03/21/07 Updated to new coding style +* 2.00a ktn 10/30/09 Updated to use HAL API's. _m is removed from all the macro +* definitions. +* 2.03a rvo 11/30/10 Added check to see if interrupt is enabled before further +* processing for CR 584557. +* </pre> +* +******************************************************************************/ + +/***************************** Include Files *********************************/ + +#include "xtmrctr.h" + + +/************************** Constant Definitions *****************************/ + + +/**************************** Type Definitions *******************************/ + + +/***************** Macros (Inline Functions) Definitions *********************/ + + +/************************** Function Prototypes ******************************/ + + +/************************** Variable Definitions *****************************/ + + +/*****************************************************************************/ +/** +* +* Sets the timer callback function, which the driver calls when the specified +* timer times out. +* +* @param InstancePtr is a pointer to the XTmrCtr instance . +* @param CallBackRef is the upper layer callback reference passed back +* when the callback function is invoked. +* @param FuncPtr is the pointer to the callback function. +* +* @return None. +* +* @note +* +* The handler is called within interrupt context so the function that is +* called should either be short or pass the more extensive processing off +* to another task to allow the interrupt to return and normal processing +* to continue. +* +******************************************************************************/ +void XTmrCtr_SetHandler(XTmrCtr * InstancePtr, XTmrCtr_Handler FuncPtr, + void *CallBackRef) +{ + Xil_AssertVoid(InstancePtr != NULL); + Xil_AssertVoid(FuncPtr != NULL); + Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); + + InstancePtr->Handler = FuncPtr; + InstancePtr->CallBackRef = CallBackRef; +} + +/*****************************************************************************/ +/** +* +* Interrupt Service Routine (ISR) for the driver. This function only performs +* processing for the device and does not save and restore the interrupt context. +* +* @param InstancePtr contains a pointer to the timer/counter instance for +* the interrupt. +* +* @return None. +* +* @note None. +* +******************************************************************************/ +void XTmrCtr_InterruptHandler(void *InstancePtr) +{ + XTmrCtr *TmrCtrPtr = NULL; + u8 TmrCtrNumber; + u32 ControlStatusReg; + + /* + * Verify that each of the inputs are valid. + */ + Xil_AssertVoid(InstancePtr != NULL); + + /* + * Convert the non-typed pointer to an timer/counter instance pointer + * such that there is access to the timer/counter + */ + TmrCtrPtr = (XTmrCtr *) InstancePtr; + + /* + * Loop thru each timer counter in the device and call the callback + * function for each timer which has caused an interrupt + */ + for (TmrCtrNumber = 0; + TmrCtrNumber < XTC_DEVICE_TIMER_COUNT; TmrCtrNumber++) { + + ControlStatusReg = XTmrCtr_ReadReg(TmrCtrPtr->BaseAddress, + TmrCtrNumber, + XTC_TCSR_OFFSET); + /* + * Check if interrupt is enabled + */ + if (ControlStatusReg & XTC_CSR_ENABLE_INT_MASK) { + + /* + * Check if timer expired and interrupt occured + */ + if (ControlStatusReg & XTC_CSR_INT_OCCURED_MASK) { + /* + * Increment statistics for the number of + * interrupts and call the callback to handle + * any application specific processing + */ + TmrCtrPtr->Stats.Interrupts++; + TmrCtrPtr->Handler(TmrCtrPtr->CallBackRef, + TmrCtrNumber); + /* + * Read the new Control/Status Register content. + */ + ControlStatusReg = + XTmrCtr_ReadReg(TmrCtrPtr->BaseAddress, + TmrCtrNumber, + XTC_TCSR_OFFSET); + /* + * If in compare mode and a single shot rather + * than auto reload mode then disable the timer + * and reset it such so that the interrupt can + * be acknowledged, this should be only temporary + * till the hardware is fixed + */ + if (((ControlStatusReg & + XTC_CSR_AUTO_RELOAD_MASK) == 0) && + ((ControlStatusReg & + XTC_CSR_CAPTURE_MODE_MASK)== 0)) { + /* + * Disable the timer counter and + * reset it such that the timer + * counter is loaded with the + * reset value allowing the + * interrupt to be acknowledged + */ + ControlStatusReg &= + ~XTC_CSR_ENABLE_TMR_MASK; + + XTmrCtr_WriteReg( + TmrCtrPtr->BaseAddress, + TmrCtrNumber, + XTC_TCSR_OFFSET, + ControlStatusReg | + XTC_CSR_LOAD_MASK); + + /* + * Clear the reset condition, + * the reset bit must be + * manually cleared by a 2nd write + * to the register + */ + XTmrCtr_WriteReg( + TmrCtrPtr->BaseAddress, + TmrCtrNumber, + XTC_TCSR_OFFSET, + ControlStatusReg); + } + + /* + * Acknowledge the interrupt by clearing the + * interrupt bit in the timer control status + * register, this is done after calling the + * handler so the application could call + * IsExpired, the interrupt is cleared by + * writing a 1 to the interrupt bit of the + * register without changing any of the other + * bits + */ + XTmrCtr_WriteReg(TmrCtrPtr->BaseAddress, + TmrCtrNumber, + XTC_TCSR_OFFSET, + ControlStatusReg | + XTC_CSR_INT_OCCURED_MASK); + } + } + } +} |