/*
* Copyright ( C ) 2004 Florian Schirmer < jolt @ tuxbox . org >
*
* This program 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 SOFTWARE IS PROVIDED ` ` 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 AUTHOR 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 .
*
* 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 . ,
* 675 Mass Ave , Cambridge , MA 02139 , USA .
*/
#include "bcm47xx_private.h"
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm /setup.h>
#include <asm /irq_cpu.h>
#include <bcm47xx.h>
asmlinkage void plat_irq_dispatch(void )
{
u32 cause;
cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
clear_c0_status(cause);
if (cause & CAUSEF_IP7)
do_IRQ(7 );
if (cause & CAUSEF_IP2)
do_IRQ(2 );
if (cause & CAUSEF_IP3)
do_IRQ(3 );
if (cause & CAUSEF_IP4)
do_IRQ(4 );
if (cause & CAUSEF_IP5)
do_IRQ(5 );
if (cause & CAUSEF_IP6)
do_IRQ(6 );
}
#define DEFINE_HWx_IRQDISPATCH(x) \
static void bcm47xx_hw ## x ## _irqdispatch(void ) \
{ \
do_IRQ(x); \
}
DEFINE_HWx_IRQDISPATCH(2 )
DEFINE_HWx_IRQDISPATCH(3 )
DEFINE_HWx_IRQDISPATCH(4 )
DEFINE_HWx_IRQDISPATCH(5 )
DEFINE_HWx_IRQDISPATCH(6 )
DEFINE_HWx_IRQDISPATCH(7 )
void __init arch_init_irq(void )
{
/*
* This is the first arch callback after mm_init ( we can use kmalloc ) ,
* so let ' s finish bus initialization now .
*/
bcm47xx_bus_setup();
#ifdef CONFIG_BCM47XX_BCMA
if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
BCMA_MIPS_MIPS74K_INTMASK(5 ), 1 << 31 );
/*
* the kernel reads the timer irq from some register and thinks
* it ' s # 5 , but we offset it by 2 and route to # 7
*/
cp0_compare_irq = 7 ;
}
#endif
mips_cpu_irq_init();
if (cpu_has_vint) {
pr_info("Setting up vectored interrupts\n" );
set_vi_handler(2 , bcm47xx_hw2_irqdispatch);
set_vi_handler(3 , bcm47xx_hw3_irqdispatch);
set_vi_handler(4 , bcm47xx_hw4_irqdispatch);
set_vi_handler(5 , bcm47xx_hw5_irqdispatch);
set_vi_handler(6 , bcm47xx_hw6_irqdispatch);
set_vi_handler(7 , bcm47xx_hw7_irqdispatch);
}
}
Messung V0.5 in Prozent C=98 H=77 G=88
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-01)
¤
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