mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 22:07:45 +07:00
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2002 ARM Ltd.
|
|
* All Rights Reserved
|
|
* Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/clk/tegra.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/smp.h>
|
|
|
|
#include <soc/tegra/common.h>
|
|
#include <soc/tegra/fuse.h>
|
|
|
|
#include <asm/smp_plat.h>
|
|
|
|
#include "common.h"
|
|
#include "sleep.h"
|
|
|
|
static void (*tegra_hotplug_shutdown)(void);
|
|
|
|
int tegra_cpu_kill(unsigned cpu)
|
|
{
|
|
cpu = cpu_logical_map(cpu);
|
|
|
|
/* Clock gate the CPU */
|
|
tegra_wait_cpu_in_reset(cpu);
|
|
tegra_disable_cpu_clock(cpu);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* platform-specific code to shutdown a CPU
|
|
*
|
|
* Called with IRQs disabled
|
|
*/
|
|
void tegra_cpu_die(unsigned int cpu)
|
|
{
|
|
if (!tegra_hotplug_shutdown) {
|
|
WARN(1, "hotplug is not yet initialized\n");
|
|
return;
|
|
}
|
|
|
|
/* Clean L1 data cache */
|
|
tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS);
|
|
|
|
/* Shut down the current CPU. */
|
|
tegra_hotplug_shutdown();
|
|
|
|
/* Should never return here. */
|
|
BUG();
|
|
}
|
|
|
|
static int __init tegra_hotplug_init(void)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU))
|
|
return 0;
|
|
|
|
if (!soc_is_tegra())
|
|
return 0;
|
|
|
|
if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_get_chip_id() == TEGRA20)
|
|
tegra_hotplug_shutdown = tegra20_hotplug_shutdown;
|
|
if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_get_chip_id() == TEGRA30)
|
|
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
|
|
if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_get_chip_id() == TEGRA114)
|
|
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
|
|
if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_get_chip_id() == TEGRA124)
|
|
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
|
|
|
|
return 0;
|
|
}
|
|
pure_initcall(tegra_hotplug_init);
|