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kernel add
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/*
* linux/arch/sh/boards/se/7780/irq.c
*
* Copyright (C) 2006,2007 Nobuhiro Iwamatsu
*
* Hitachi UL SolutionEngine 7780 Support.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <mach-se/mach/se7780.h>
#define INTC_BASE 0xffd00000
#define INTC_ICR1 (INTC_BASE+0x1c)
/*
* Initialize IRQ setting
*/
void __init init_se7780_IRQ(void)
{
/* enable all interrupt at FPGA */
__raw_writew(0, FPGA_INTMSK1);
/* mask SM501 interrupt */
__raw_writew((__raw_readw(FPGA_INTMSK1) | 0x0002), FPGA_INTMSK1);
/* enable all interrupt at FPGA */
__raw_writew(0, FPGA_INTMSK2);
/* set FPGA INTSEL register */
/* FPGA + 0x06 */
__raw_writew( ((IRQPIN_SM501 << IRQPOS_SM501) |
(IRQPIN_SMC91CX << IRQPOS_SMC91CX)), FPGA_INTSEL1);
/* FPGA + 0x08 */
__raw_writew(((IRQPIN_EXTINT4 << IRQPOS_EXTINT4) |
(IRQPIN_EXTINT3 << IRQPOS_EXTINT3) |
(IRQPIN_EXTINT2 << IRQPOS_EXTINT2) |
(IRQPIN_EXTINT1 << IRQPOS_EXTINT1)), FPGA_INTSEL2);
/* FPGA + 0x0A */
__raw_writew((IRQPIN_PCCPW << IRQPOS_PCCPW), FPGA_INTSEL3);
plat_irq_setup_pins(IRQ_MODE_IRQ); /* install handlers for IRQ0-7 */
/* ICR1: detect low level(for 2ndcut) */
__raw_writel(0xAAAA0000, INTC_ICR1);
/*
* FPGA PCISEL register initialize
*
* CPU || SLOT1 | SLOT2 | S-ATA | USB
* -------------------------------------
* INTA || INTA | INTD | -- | INTB
* -------------------------------------
* INTB || INTB | INTA | -- | INTC
* -------------------------------------
* INTC || INTC | INTB | INTA | --
* -------------------------------------
* INTD || INTD | INTC | -- | INTA
* -------------------------------------
*/
__raw_writew(0x0013, FPGA_PCI_INTSEL1);
__raw_writew(0xE402, FPGA_PCI_INTSEL2);
}
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