forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.8 KiB
65 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* linux/arch/sh/boards/se/7780/irq.c |
|
* |
|
* Copyright (C) 2006,2007 Nobuhiro Iwamatsu |
|
* |
|
* Hitachi UL SolutionEngine 7780 Support. |
|
*/ |
|
#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); |
|
}
|
|
|