b3222bbc8a
Provide a user defined callback context for irq's, such that when registering a callback users can provide a pointer that will get passed back when the isr is called.
162 lines
5.0 KiB
C
162 lines
5.0 KiB
C
/****************************************************************************
|
|
* arch/arm/src/tms570/tms570_esm.c
|
|
*
|
|
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Derives from the TI "Project0" sample code which has a compatible 3-
|
|
* clause BSD license:
|
|
*
|
|
* Copyright (c) 2012, Texas Instruments Incorporated
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX, Texas Instruments Incorporated, nor the
|
|
* names of its contributors may be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdint.h>
|
|
#include <debug.h>
|
|
|
|
#include <arch/irq.h>
|
|
|
|
#include "up_internal.h"
|
|
#include "up_arch.h"
|
|
|
|
#include "chip/tms570_esm.h"
|
|
#include "tms570_esm.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: tms570_esm_initialize
|
|
*
|
|
* Description:
|
|
* Initialize the ESM.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int tms570_esm_initialize(void)
|
|
{
|
|
uint32_t regval;
|
|
|
|
/* Disable error pin channels */
|
|
|
|
putreg32(0xffffffff, TMS570_ESM_DEPAPR1);
|
|
putreg32(0xffffffff, TMS570_ESM_IEPCR4);
|
|
|
|
/* Disable interrupts */
|
|
|
|
putreg32(0xffffffff, TMS570_ESM_IECR1);
|
|
putreg32(0xffffffff, TMS570_ESM_IECR4);
|
|
|
|
/* Clear error status flags */
|
|
|
|
putreg32(0xffffffff, TMS570_ESM_SR1);
|
|
putreg32(0xffffffff, TMS570_ESM_SR2);
|
|
putreg32(0xffffffff, TMS570_ESM_SSR2);
|
|
putreg32(0xffffffff, TMS570_ESM_SR3);
|
|
putreg32(0xffffffff, TMS570_ESM_SR4);
|
|
putreg32(0xffffffff, TMS570_ESM_SR5);
|
|
putreg32(0xffffffff, TMS570_ESM_SSR5);
|
|
putreg32(0xffffffff, TMS570_ESM_SR6);
|
|
|
|
/* Setup LPC preload */
|
|
|
|
putreg32(16384 - 1, TMS570_ESM_LTCPR);
|
|
|
|
/* Reset error pin */
|
|
|
|
regval = getreg32(TMS570_ESM_EPSR);
|
|
if (regval == 0)
|
|
{
|
|
putreg32(5, TMS570_ESM_EKR);
|
|
}
|
|
else
|
|
{
|
|
putreg32(0, TMS570_ESM_EKR);
|
|
}
|
|
|
|
/* Clear interrupt level. All channels set to low level interrupt. */
|
|
|
|
putreg32(0xffffffff, TMS570_ESM_ILCR1);
|
|
putreg32(0xffffffff, TMS570_ESM_ILCR4);
|
|
|
|
/* Set interrupt level (Writing zero does nothing) */
|
|
|
|
putreg32(0, TMS570_ESM_ILSR1);
|
|
putreg32(0, TMS570_ESM_ILSR4);
|
|
|
|
/* Enable error pin channels */
|
|
|
|
putreg32(0, TMS570_ESM_EEPAPR1);
|
|
putreg32(0, TMS570_ESM_IEPSR4);
|
|
|
|
/* Enable interrupts */
|
|
|
|
putreg32(0, TMS570_ESM_IESR1);
|
|
putreg32(0, TMS570_ESM_IESR4);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: tms570_esm_interrupt
|
|
*
|
|
* Description:
|
|
* ESM interrupt handler
|
|
*
|
|
****************************************************************************/
|
|
|
|
int tms570_esm_interrupt(int irq, void *context, FAR void *arg)
|
|
{
|
|
/* Save the saved processor context in CURRENT_REGS where it can be accessed
|
|
* for register dumps and possibly context switching.
|
|
*/
|
|
|
|
CURRENT_REGS = (uint32_t *)context;
|
|
|
|
/* Crash -- possibly showing diagnostic debug information. */
|
|
|
|
_err("ERROR: ESM Interrupt. PC: %08x\n", CURRENT_REGS[REG_PC]);
|
|
PANIC();
|
|
return OK; /* To keep the compiler happy */
|
|
}
|