X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=cpu%2Farm%2Fdrv%2Fsysirq_at91.c;h=410e53f0b12f98ee8ae481cdf419e2e58e6f3bb5;hb=HEAD;hp=d943e89f09d44a724bea68fc8f3fd31d416bb0c7;hpb=09598a3a18d9a290d68a5bd9e39352b9f3aeab39;p=bertos.git

diff --git a/cpu/arm/drv/sysirq_at91.c b/cpu/arm/drv/sysirq_at91.c
deleted file mode 100644
index d943e89f..00000000
--- a/cpu/arm/drv/sysirq_at91.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/**
- * \file
- * <!--
- * This file is part of BeRTOS.
- *
- * Bertos is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction.  Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License.  This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- *
- * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
- *
- * -->
- *
- * \version $Id$
- *
- * \author Francesco Sacchi <batt@develer.com>
- *
- * \brief System IRQ handler for Atmel AT91 ARM7 processors.
- *
- * In Atmel AT91 ARM7TDMI processors, there are various
- * peripheral interrupt sources.
- * In general, every source has its own interrupt vector, so it
- * is possible to assign a specific handler for each interrupt
- * independently.
- * However, there are a few sources called "system sources" that
- * share a common IRQ line and vector, called "system IRQ".
- * So a unique system IRQ dispatcher is implemented here.
- * This module also contains an interface to manage every source
- * independently. It is possible to assign to every system IRQ
- * a specific IRQ handler.
- *
- * \see sysirq_setHandler
- * \see sysirq_setEnable
- */
-
-#include "sysirq_at91.h"
-#include <io/at91sam7s.h>
-#include <cpu/cpu.h>
-#include <cfg/module.h>
-#include <cfg/macros.h>
-
-/**
- * Enable/disable the Periodic Interrupt Timer
- * interrupt.
- */
-INLINE void pit_setEnable(bool enable)
-{
-	if (enable)
-		PIT_MR |= BV(PITIEN);
-	else
-		PIT_MR &= ~BV(PITIEN);
-}
-
-/**
- * Table containing all system irqs.
- */
-static SysIrq sysirq_tab[] =
-{
-	/* PIT, Periodic Interval Timer (System timer)*/
-	{
-		.enabled = false,
-		.setEnable = pit_setEnable,
-		.handler = NULL,
-	},
-	/* TODO: add other system sources here */
-};
-
-STATIC_ASSERT(countof(sysirq_tab) == SYSIRQ_CNT);
-
-/*!
- * \brief Interrupt entry.
- */
-#define IRQ_ENTRY() \
-    asm volatile("sub   lr, lr,#4"          "\n\t"  /* Adjust LR */ \
-                 "stmfd sp!,{r0-r12,lr}"    "\n\t"  /* Save registers on IRQ stack. */ \
-                 "mrs   r1, spsr"           "\n\t"  /* Save SPSR */ \
-                 "stmfd sp!,{r1}"           "\n\t")     /* */
-
-/*!
- * \brief Interrupt exit.
- */
-#define IRQ_EXIT() \
-    asm volatile("ldmfd sp!, {r1}"          "\n\t"  /* Restore SPSR */ \
-                 "msr   spsr_c, r1"         "\n\t"  /* */ \
-                 "ldr   r0, =0xFFFFF000"    "\n\t"  /* End of interrupt. */ \
-                 "str   r0, [r0, #0x130]"   "\n\t"  /* */ \
-                 "ldmfd sp!, {r0-r12, pc}^" "\n\t")     /* Restore registers and return. */
-
-
-/**
- * System IRQ dispatcher.
- * This is the entry point for all system IRQs in AT91.
- * This function checks for interrupt enable state of
- * various sources (system timer, etc..) and calls
- * the corresponding handler.
- */
-static void sysirq_dispatcher(void) __attribute__ ((naked));
-static void sysirq_dispatcher(void)
-{
-	IRQ_ENTRY();
-	for (unsigned i = 0; i < countof(sysirq_tab); i++)
-	{
-		if (sysirq_tab[i].enabled
-		 && sysirq_tab[i].handler)
-			sysirq_tab[i].handler();
-	}
-
-	IRQ_EXIT();
-}
-
-#define SYSIRQ_PRIORITY 0 ///< default priority for system irqs.
-
-
-MOD_DEFINE(sysirq);
-
-/**
- * Init system IRQ handling.
- * \note all system interrupts are disabled.
- */
-void sysirq_init(void)
-{
-	cpuflags_t flags;
-	IRQ_SAVE_DISABLE(flags);
-
-	/* Disable all system interrupts */
-	for (unsigned i = 0; i < countof(sysirq_tab); i++)
-		sysirq_tab[i].setEnable(false);
-
-	/* Set the vector. */
-	AIC_SVR(SYSC_ID) = sysirq_dispatcher;
-	/* Initialize to edge triggered with defined priority. */
-	AIC_SMR(SYSC_ID) = AIC_SRCTYPE_INT_EDGE_TRIGGERED | SYSIRQ_PRIORITY;
-	/* Clear pending interrupt */
-	AIC_ICCR = BV(SYSC_ID);
-	/* Enable the system IRQ */
-	AIC_IECR = BV(SYSC_ID);
-
-	IRQ_RESTORE(flags);
-	MOD_INIT(sysirq);
-}
-
-
-/**
- * Helper function used to set handler for system IRQ \a irq.
- */
-void sysirq_setHandler(sysirq_t irq, sysirq_handler_t handler)
-{
-	ASSERT(irq >= 0);
-	ASSERT(irq < SYSIRQ_CNT);
-	sysirq_tab[irq].handler = handler;
-}
-
-/**
- * Helper function used to enable/disable system IRQ \a irq.
- */
-void sysirq_setEnable(sysirq_t irq, bool enable)
-{
-	ASSERT(irq >= 0);
-	ASSERT(irq < SYSIRQ_CNT);
-
-	sysirq_tab[irq].setEnable(enable);
-	sysirq_tab[irq].enabled = enable;
-}
-
-/**
- * Helper function used to get system IRQ \a irq state.
- */
-bool sysirq_enabled(sysirq_t irq)
-{
-	ASSERT(irq >= 0);
-	ASSERT(irq < SYSIRQ_CNT);
-
-	return sysirq_tab[irq].enabled;
-}