mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 23:07:54 +07:00
2874c5fd28
Based on 1 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 as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Maxtor Shared Storage II Board Setup
|
|
*
|
|
* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/irq.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/pci.h>
|
|
#include "orion5x.h"
|
|
#include "bridge-regs.h"
|
|
#include "common.h"
|
|
|
|
/*****************************************************************************
|
|
* Maxtor Shared Storage II Info
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* PCI setup
|
|
****************************************************************************/
|
|
static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int irq;
|
|
|
|
/*
|
|
* Check for devices with hard-wired IRQs.
|
|
*/
|
|
irq = orion5x_pci_map_irq(dev, slot, pin);
|
|
if (irq != -1)
|
|
return irq;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static struct hw_pci mss2_pci __initdata = {
|
|
.nr_controllers = 2,
|
|
.setup = orion5x_pci_sys_setup,
|
|
.scan = orion5x_pci_sys_scan_bus,
|
|
.map_irq = mss2_pci_map_irq,
|
|
};
|
|
|
|
static int __init mss2_pci_init(void)
|
|
{
|
|
if (machine_is_mss2())
|
|
pci_common_init(&mss2_pci);
|
|
|
|
return 0;
|
|
}
|
|
subsys_initcall(mss2_pci_init);
|
|
|
|
/*****************************************************************************
|
|
* MSS2 power off method
|
|
****************************************************************************/
|
|
/*
|
|
* On the Maxtor Shared Storage II, the shutdown process is the following :
|
|
* - Userland modifies U-boot env to tell U-boot to go idle at next boot
|
|
* - The board reboots
|
|
* - U-boot starts and go into an idle mode until the user press "power"
|
|
*/
|
|
static void mss2_power_off(void)
|
|
{
|
|
u32 reg;
|
|
|
|
/*
|
|
* Enable and issue soft reset
|
|
*/
|
|
reg = readl(RSTOUTn_MASK);
|
|
reg |= 1 << 2;
|
|
writel(reg, RSTOUTn_MASK);
|
|
|
|
reg = readl(CPU_SOFT_RESET);
|
|
reg |= 1;
|
|
writel(reg, CPU_SOFT_RESET);
|
|
}
|
|
|
|
void __init mss2_init(void)
|
|
{
|
|
/* register mss2 specific power-off method */
|
|
pm_power_off = mss2_power_off;
|
|
}
|