/* * 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); }