android/android_kernel_asus_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drivers: edac: Add support to re-enable edac on cpu hotplug

Browse Source 
EDAC ppi interrupts get disabled on cpu hotplug.
Add support to re-enable edac ppi post cpu comes online
during hotplug.

Change-Id: I51455c0134634f03b5e4e83eca915b794dd85067
Signed-off-by: Mayank Grover <groverm@codeaurora.org>
This commit is contained in:
Mayank Grover 2021-01-29 17:43:25 +05:30
parent 73db1046f1
commit 625ba320ce
1 changed files with 31 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/edac/kryo_arm64_edac.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
*/
#include <linux/kernel.h>
@ -58,6 +58,8 @@
#define KRYO_ERRXMISC_LVL_GOLD(a) (a & 0xF)
#define KRYO_ERRXMISC_WAY(a) ((a >> 28) & 0xF)
static enum cpuhp_state edac_online;
static inline void set_errxctlr_el1(void)
{
u64 val = 0x10f;
@ -203,7 +205,6 @@ static int request_erp_irq(struct platform_device *pdev, const char *propname,
}
drv->ppi = r->start;
on_each_cpu(l1_l2_irq_enable, &(r->start), 1);
}
return 0;
@ -491,6 +492,23 @@ static int kryo_pmu_cpu_pm_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static int kryo_cpu_edac_online(unsigned int cpu)
{
write_errselr_el1(0);
initialize_registers(NULL);
l1_l2_irq_enable(&(panic_handler_drvdata->ppi));
return 0;
}
static int kryo_cpu_edac_offline(unsigned int cpu)
{
l1_l2_irq_disable(&(panic_handler_drvdata->ppi));
return 0;
}
static int kryo_cpu_erp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -565,6 +583,16 @@ static int kryo_cpu_erp_probe(struct platform_device *pdev)
goto out_dev;
}
rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
"edac/kryo_cpu_cache_erp:online",
kryo_cpu_edac_online,
kryo_cpu_edac_offline);
if (rc < 0) {
pr_err("KRYO ERP: Could not request cpuhp setup\n");
goto out_dev;
}
edac_online = rc;
cpu_pm_register_notifier(&(drv->nb_pm));
return 0;
@ -588,6 +616,7 @@ static int kryo_cpu_erp_remove(struct platform_device *pdev)
free_percpu(drv->erp_cpu_drvdata);
}
cpuhp_remove_state(edac_online);
cpu_pm_unregister_notifier(&(drv->nb_pm));
edac_device_del_device(edac_ctl->dev);
edac_device_free_ctl_info(edac_ctl);