mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
b7462d654f
init irq and handler add irq controller register file and header files Signed-off-by: Leo Chen <leochen@broadcom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/*
|
|
*
|
|
* Copyright (C) 1999 ARM Limited
|
|
*
|
|
* 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/list.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/version.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/mach/irq.h>
|
|
#include <mach/csp/intcHw_reg.h>
|
|
#include <mach/csp/mm_io.h>
|
|
|
|
static void bcmring_mask_irq0(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_INTC0_START),
|
|
MM_IO_BASE_INTC0 + INTCHW_INTENCLEAR);
|
|
}
|
|
|
|
static void bcmring_unmask_irq0(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_INTC0_START),
|
|
MM_IO_BASE_INTC0 + INTCHW_INTENABLE);
|
|
}
|
|
|
|
static void bcmring_mask_irq1(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_INTC1_START),
|
|
MM_IO_BASE_INTC1 + INTCHW_INTENCLEAR);
|
|
}
|
|
|
|
static void bcmring_unmask_irq1(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_INTC1_START),
|
|
MM_IO_BASE_INTC1 + INTCHW_INTENABLE);
|
|
}
|
|
|
|
static void bcmring_mask_irq2(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_SINTC_START),
|
|
MM_IO_BASE_SINTC + INTCHW_INTENCLEAR);
|
|
}
|
|
|
|
static void bcmring_unmask_irq2(unsigned int irq)
|
|
{
|
|
writel(1 << (irq - IRQ_SINTC_START),
|
|
MM_IO_BASE_SINTC + INTCHW_INTENABLE);
|
|
}
|
|
|
|
static struct irq_chip bcmring_irq0_chip = {
|
|
.typename = "ARM-INTC0",
|
|
.ack = bcmring_mask_irq0,
|
|
.mask = bcmring_mask_irq0, /* mask a specific interrupt, blocking its delivery. */
|
|
.unmask = bcmring_unmask_irq0, /* unmaks an interrupt */
|
|
};
|
|
|
|
static struct irq_chip bcmring_irq1_chip = {
|
|
.typename = "ARM-INTC1",
|
|
.ack = bcmring_mask_irq1,
|
|
.mask = bcmring_mask_irq1,
|
|
.unmask = bcmring_unmask_irq1,
|
|
};
|
|
|
|
static struct irq_chip bcmring_irq2_chip = {
|
|
.typename = "ARM-SINTC",
|
|
.ack = bcmring_mask_irq2,
|
|
.mask = bcmring_mask_irq2,
|
|
.unmask = bcmring_unmask_irq2,
|
|
};
|
|
|
|
static void vic_init(void __iomem *base, struct irq_chip *chip,
|
|
unsigned int irq_start, unsigned int vic_sources)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < 32; i++) {
|
|
unsigned int irq = irq_start + i;
|
|
set_irq_chip(irq, chip);
|
|
set_irq_chip_data(irq, base);
|
|
|
|
if (vic_sources & (1 << i)) {
|
|
set_irq_handler(irq, handle_level_irq);
|
|
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
|
|
}
|
|
}
|
|
writel(0, base + INTCHW_INTSELECT);
|
|
writel(0, base + INTCHW_INTENABLE);
|
|
writel(~0, base + INTCHW_INTENCLEAR);
|
|
writel(0, base + INTCHW_IRQSTATUS);
|
|
writel(~0, base + INTCHW_SOFTINTCLEAR);
|
|
}
|
|
|
|
void __init bcmring_init_irq(void)
|
|
{
|
|
vic_init((void __iomem *)MM_IO_BASE_INTC0, &bcmring_irq0_chip,
|
|
IRQ_INTC0_START, IRQ_INTC0_VALID_MASK);
|
|
vic_init((void __iomem *)MM_IO_BASE_INTC1, &bcmring_irq1_chip,
|
|
IRQ_INTC1_START, IRQ_INTC1_VALID_MASK);
|
|
vic_init((void __iomem *)MM_IO_BASE_SINTC, &bcmring_irq2_chip,
|
|
IRQ_SINTC_START, IRQ_SINTC_VALID_MASK);
|
|
|
|
/* special cases */
|
|
if (INTCHW_INTC1_GPIO0 & IRQ_INTC1_VALID_MASK) {
|
|
set_irq_handler(IRQ_GPIO0, handle_simple_irq);
|
|
}
|
|
if (INTCHW_INTC1_GPIO1 & IRQ_INTC1_VALID_MASK) {
|
|
set_irq_handler(IRQ_GPIO1, handle_simple_irq);
|
|
}
|
|
}
|