mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
6efb6b77ff
Currently, when assign_irq_vector is called and the irq connected in the simulator, the irq is not ready. request_irq will return ENOSYS immediately. It is because the irq chip is unset. Hence set the chip properly to irq_type_hp_sim. And make sure this is done from both users of simulated interrupts. Also we have to set handler here, otherwise we end up in handle_bad_int resulting in spam in logs and no irqs handled. We use handle_simple_irq as these are SW interrupts that need no ACK or anything. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
76 lines
1.3 KiB
C
76 lines
1.3 KiB
C
/*
|
|
* Platform dependent support for HP simulator.
|
|
*
|
|
* Copyright (C) 1998-2001 Hewlett-Packard Co
|
|
* Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/irq.h>
|
|
|
|
#include "hpsim_ssc.h"
|
|
|
|
static unsigned int
|
|
hpsim_irq_startup(struct irq_data *data)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
hpsim_irq_noop(struct irq_data *data)
|
|
{
|
|
}
|
|
|
|
static int
|
|
hpsim_set_affinity_noop(struct irq_data *d, const struct cpumask *b, bool f)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct irq_chip irq_type_hp_sim = {
|
|
.name = "hpsim",
|
|
.irq_startup = hpsim_irq_startup,
|
|
.irq_shutdown = hpsim_irq_noop,
|
|
.irq_enable = hpsim_irq_noop,
|
|
.irq_disable = hpsim_irq_noop,
|
|
.irq_ack = hpsim_irq_noop,
|
|
.irq_set_affinity = hpsim_set_affinity_noop,
|
|
};
|
|
|
|
static void hpsim_irq_set_chip(int irq)
|
|
{
|
|
struct irq_chip *chip = irq_get_chip(irq);
|
|
|
|
if (chip == &no_irq_chip)
|
|
irq_set_chip(irq, &irq_type_hp_sim);
|
|
}
|
|
|
|
static void hpsim_connect_irq(int intr, int irq)
|
|
{
|
|
ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
|
|
}
|
|
|
|
int hpsim_get_irq(int intr)
|
|
{
|
|
int irq = assign_irq_vector(AUTO_ASSIGN);
|
|
|
|
if (irq >= 0) {
|
|
hpsim_irq_set_chip(irq);
|
|
irq_set_handler(irq, handle_simple_irq);
|
|
hpsim_connect_irq(intr, irq);
|
|
}
|
|
|
|
return irq;
|
|
}
|
|
|
|
void __init
|
|
hpsim_irq_init (void)
|
|
{
|
|
int i;
|
|
|
|
for_each_active_irq(i)
|
|
hpsim_irq_set_chip(i);
|
|
}
|