mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 03:36:39 +07:00
7b6aa335ca
Impact: cleanup Remove genapic.h and remove all references to it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* SGI UV IRQ functions
|
|
*
|
|
* Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/irq.h>
|
|
|
|
#include <asm/apic.h>
|
|
#include <asm/uv/uv_irq.h>
|
|
|
|
static void uv_noop(unsigned int irq)
|
|
{
|
|
}
|
|
|
|
static unsigned int uv_noop_ret(unsigned int irq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void uv_ack_apic(unsigned int irq)
|
|
{
|
|
ack_APIC_irq();
|
|
}
|
|
|
|
struct irq_chip uv_irq_chip = {
|
|
.name = "UV-CORE",
|
|
.startup = uv_noop_ret,
|
|
.shutdown = uv_noop,
|
|
.enable = uv_noop,
|
|
.disable = uv_noop,
|
|
.ack = uv_noop,
|
|
.mask = uv_noop,
|
|
.unmask = uv_noop,
|
|
.eoi = uv_ack_apic,
|
|
.end = uv_noop,
|
|
};
|
|
|
|
/*
|
|
* Set up a mapping of an available irq and vector, and enable the specified
|
|
* MMR that defines the MSI that is to be sent to the specified CPU when an
|
|
* interrupt is raised.
|
|
*/
|
|
int uv_setup_irq(char *irq_name, int cpu, int mmr_blade,
|
|
unsigned long mmr_offset)
|
|
{
|
|
int irq;
|
|
int ret;
|
|
|
|
irq = create_irq();
|
|
if (irq <= 0)
|
|
return -EBUSY;
|
|
|
|
ret = arch_enable_uv_irq(irq_name, irq, cpu, mmr_blade, mmr_offset);
|
|
if (ret != irq)
|
|
destroy_irq(irq);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(uv_setup_irq);
|
|
|
|
/*
|
|
* Tear down a mapping of an irq and vector, and disable the specified MMR that
|
|
* defined the MSI that was to be sent to the specified CPU when an interrupt
|
|
* was raised.
|
|
*
|
|
* Set mmr_blade and mmr_offset to what was passed in on uv_setup_irq().
|
|
*/
|
|
void uv_teardown_irq(unsigned int irq, int mmr_blade, unsigned long mmr_offset)
|
|
{
|
|
arch_disable_uv_irq(mmr_blade, mmr_offset);
|
|
destroy_irq(irq);
|
|
}
|
|
EXPORT_SYMBOL_GPL(uv_teardown_irq);
|