Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 04c1a043 authored by Channagoud Kadabi's avatar Channagoud Kadabi Committed by Runmin Wang
Browse files

drivers: edac: Enable llcc ecc interrupt handling 



LLCC errors reported as interrupt to gic for single and double errors.
Add support to handle the interrupt and dump the syndrome registers.

Change-Id: Ida9202a3e586e54ad932cf2792fa0ae5963e0a07
Signed-off-by: default avatarChannagoud Kadabi <ckadabi@codeaurora.org>
parent cbdf44e1

drivers/edac/qcom_llcc_edac.c

+38 −2
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/spinlock.h>

#include <linux/mfd/syscon.h>

#include <linux/regmap.h>

#include <linux/interrupt.h>

#include "edac_core.h"



#ifdef CONFIG_EDAC_QCOM_LLCC_PANIC_ON_CE
@@ -76,6 +77,11 @@ 
static int poll_msec = 5000;

module_param(poll_msec, int, 0444);



static int interrupt_mode;

module_param(interrupt_mode, int, 0444);

MODULE_PARM_DESC(interrupt_mode,

		 "Controls whether to use interrupt or poll mode");



enum {

	LLCC_DRAM_CE = 0,

	LLCC_DRAM_UE,
@@ -91,6 +97,7 @@ struct errors_edac { 


struct erp_drvdata {

	struct regmap *llcc_map;

	u32 ecc_irq;

};



static const struct errors_edac errors[] = {
@@ -262,7 +269,7 @@ static void dump_syn_reg(struct edac_device_ctl_info *edev_ctl, 
	errors[err_type].func(edev_ctl, 0, 0, errors[err_type].msg);

}



static void qcom_llcc_poll_cache_errors

static void qcom_llcc_check_cache_errors

		(struct edac_device_ctl_info *edev_ctl)

{

	u32 drp_error;
@@ -295,6 +302,18 @@ static void qcom_llcc_poll_cache_errors 
	}

}



static void qcom_llcc_poll_cache_errors(struct edac_device_ctl_info *edev_ctl)

{

	qcom_llcc_check_cache_errors(edev_ctl);

}



static irqreturn_t llcc_ecc_irq_handler

			(int irq, void *edev_ctl)

{

	qcom_llcc_check_cache_errors(edev_ctl);

	return IRQ_HANDLED;

}



static int qcom_llcc_erp_probe(struct platform_device *pdev)

{

	int rc = 0;
@@ -321,12 +340,29 @@ static int qcom_llcc_erp_probe(struct platform_device *pdev) 
	drv->llcc_map = syscon_node_to_regmap(dev->parent->of_node);

	if (IS_ERR(drv->llcc_map)) {

		dev_err(dev, "no regmap for syscon llcc parent\n");

		return -ENOMEM;

		rc = -ENOMEM;

		goto out;

	}



	if (interrupt_mode) {

		drv->ecc_irq = platform_get_irq_byname(pdev, "ecc_irq");

		if (!drv->ecc_irq) {

			rc = -ENODEV;

			goto out;

		}



		rc = devm_request_irq(dev, drv->ecc_irq, llcc_ecc_irq_handler,

				IRQF_TRIGGER_RISING, "llcc_ecc", edev_ctl);

		if (rc) {

			dev_err(dev, "failed to request ecc irq\n");

			goto out;

		}

	}



	platform_set_drvdata(pdev, edev_ctl);



	rc = edac_device_add_device(edev_ctl);

out:

	if (rc)

		edac_device_free_ctl_info(edev_ctl);