Add irq initialization
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1696 42af7a65-404d-4744-a932-0658087f49c3
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@ -46,8 +46,8 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
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up_undefinedinsn.c up_usestack.c
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CHIP_ASRCS = #imx_lowputc.S imx_restart.S
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CHIP_CSRCS = imx_boot.c imx_gpio.c imx_allocateheap.c # imx_decodeirq.c \
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#imx_irq.c imx_serial.c imx_timerisr.c imx_framebuffer.c
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CHIP_CSRCS = imx_boot.c imx_gpio.c imx_allocateheap.c imx_irq.c \
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# imx_decodeirq.c imx_serial.c imx_timerisr.c imx_framebuffer.c
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ifeq ($(CONFIG_USBDEV),y)
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CHIP_CSRCS += imx_usbdev.c
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@ -62,6 +62,7 @@
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#define AITC_NIPRIORITY2_OFFSET 0x0034
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#define AITC_NIPRIORITY1_OFFSET 0x0038
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#define AITC_NIPRIORITY0_OFFSET 0x003c
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#define AITC_NIPRIORITY_OFFSET(n) (AITC_NIPRIORITY7_OFFSET + 4*(7-(n)))
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#define AITC_NIVECSR_OFFSET 0x0040
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#define AITC_FIVECSR_OFFSET 0x0044
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#define AITC_INTSRCH_OFFSET 0x0048
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@ -91,6 +92,7 @@
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#define IMX_AITC_NIPRIORITY2 (IMX_AITC_VBASE + AITC_NIPRIORITY2_OFFSET)
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#define IMX_AITC_NIPRIORITY1 (IMX_AITC_VBASE + AITC_NIPRIORITY1_OFFSET)
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#define IMX_AITC_NIPRIORITY0 (IMX_AITC_VBASE + AITC_NIPRIORITY0_OFFSET)
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#define IMX_AITC_NIPRIORITY(n) (IMX_AITC_VBASE + AITC_NIPRIORITY_OFFSET(n)))
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#define IMX_AITC_NIVECSR (IMX_AITC_VBASE + AITC_NIVECSR_OFFSET)
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#define IMX_AITC_FIVECSR (IMX_AITC_VBASE + AITC_FIVECSR_OFFSET)
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#define IMX_AITC_INTSRCH (IMX_AITC_VBASE + AITC_INTSRCH_OFFSET)
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143
arch/arm/src/imx/imx_irq.c
Normal file
143
arch/arm/src/imx/imx_irq.c
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@ -0,0 +1,143 @@
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/****************************************************************************
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* arch/arm/src/imc/imx_irq.c
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* arch/arm/src/chip/imx_irq.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <nuttx/irq.h>
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#include "up_arch.h"
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#include "os_internal.h"
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#include "up_internal.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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uint32 *current_regs;
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Funtions
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****************************************************************************/
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/****************************************************************************
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* Name: up_irqinitialize
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****************************************************************************/
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void up_irqinitialize(void)
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{
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/* Clear, disable and configure all interrupts. */
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putreg32(0, IMX_AITC_INTENABLEH);
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putreg32(0, IMX_AITC_INTENABLEL);
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/* currents_regs is non-NULL only while processing an interrupt */
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current_regs = NULL;
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/* Set masking of normal interrupts by priority. Writing all ones
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* (or -1) to the NIMASK register sets the normal interrupt mask to
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* -1 and does not disable any normal interrupt priority levels.
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*/
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#ifndef CONFIG_SUPPRESS_INTERRUPTS
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putreg32(-1, IMX_AITC_NIMASK); /* -1: No priority levels masked */
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/* Initialize FIQs */
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#ifdef CONFIG_ARCH_FIQ
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up_fiqinitialize();
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#endif
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/* And finally, enable interrupts */
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irqrestore(SVC_MODE | PSR_F_BIT);
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#endif
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}
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/****************************************************************************
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* Name: up_disable_irq
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*
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* Description:
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* Disable the IRQ specified by 'irq'
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*
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****************************************************************************/
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void up_disable_irq(int irq)
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{
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putreg32(irq, IMX_AITC_INTDISNUM);
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}
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/****************************************************************************
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* Name: up_enable_irq
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*
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* Description:
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* Enable the IRQ specified by 'irq'
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*
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****************************************************************************/
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void up_enable_irq(int irq)
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{
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putreg32(irq, IMX_AITC_INTENNUM);
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}
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/****************************************************************************
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* Name: up_maskack_irq
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*
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* Description:
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* Mask the IRQ and acknowledge it
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*
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****************************************************************************/
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void up_maskack_irq(int irq)
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{
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up_disable_irq(irq);
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}
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