mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 14:16:41 +07:00
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
|
/*
|
||
|
|
* Based on arch/arm/kernel/irq.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 1992 Linus Torvalds
|
||
|
|
* Modifications for ARM processor Copyright (C) 1995-2000 Russell King.
|
||
|
|
* Support for Dynamic Tick Timer Copyright (C) 2004-2005 Nokia Corporation.
|
||
|
|
* Dynamic Tick Timer written by Tony Lindgren <tony@atomide.com> and
|
||
|
|
* Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>.
|
||
|
|
* Copyright (C) 2012 ARM Ltd.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel_stat.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/seq_file.h>
|
||
|
|
#include <linux/ratelimit.h>
|
||
|
|
|
||
|
|
unsigned long irq_err_count;
|
||
|
|
|
||
|
|
int arch_show_interrupts(struct seq_file *p, int prec)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_SMP
|
||
|
|
show_ipi_list(p, prec);
|
||
|
|
#endif
|
||
|
|
seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_count);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* handle_IRQ handles all hardware IRQ's. Decoded IRQs should
|
||
|
|
* not come via this function. Instead, they should provide their
|
||
|
|
* own 'handler'. Used by platform code implementing C-based 1st
|
||
|
|
* level decoding.
|
||
|
|
*/
|
||
|
|
void handle_IRQ(unsigned int irq, struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
struct pt_regs *old_regs = set_irq_regs(regs);
|
||
|
|
|
||
|
|
irq_enter();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Some hardware gives randomly wrong interrupts. Rather
|
||
|
|
* than crashing, do something sensible.
|
||
|
|
*/
|
||
|
|
if (unlikely(irq >= nr_irqs)) {
|
||
|
|
pr_warn_ratelimited("Bad IRQ%u\n", irq);
|
||
|
|
ack_bad_irq(irq);
|
||
|
|
} else {
|
||
|
|
generic_handle_irq(irq);
|
||
|
|
}
|
||
|
|
|
||
|
|
irq_exit();
|
||
|
|
set_irq_regs(old_regs);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Interrupt controllers supported by the kernel.
|
||
|
|
*/
|
||
|
|
static const struct of_device_id intctrl_of_match[] __initconst = {
|
||
|
|
/* IRQ controllers { .compatible, .data } info to go here */
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
void __init init_IRQ(void)
|
||
|
|
{
|
||
|
|
of_irq_init(intctrl_of_match);
|
||
|
|
|
||
|
|
if (!handle_arch_irq)
|
||
|
|
panic("No interrupt controller found.");
|
||
|
|
}
|