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Commit e7427b39 authored by Hareesh Gundu's avatar Hareesh Gundu
Browse files

msm: kgsl: Dump always on counter on hfi timeout 



Dump always on counter value before and after hfi
wait response to correlate with GMU logs.

Change-Id: If0408818d611b63c9ebfeada53c07d3c0635a4e4
Signed-off-by: default avatarHareesh Gundu <hareeshg@codeaurora.org>
parent f8b00cea

drivers/gpu/msm/kgsl_hfi.c

+7 −6
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/delay.h>
@@ -268,9 +268,9 @@ static int poll_adreno_gmu_reg(struct adreno_device *adreno_dev, 
	struct kgsl_device *device = KGSL_DEVICE(adreno_dev);

	struct gmu_device *gmu = KGSL_GMU_DEVICE(device);

	unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);

	u64 ao_pre_poll, ao_post_poll;

	u64 ts1, ts2;



	ao_pre_poll = gmu_core_dev_read_ao_counter(device);

	ts1 = gmu_core_dev_read_ao_counter(device);



	while (time_is_after_jiffies(timeout)) {

		adreno_read_gmureg(adreno_dev, offset_name, &val);
@@ -279,15 +279,16 @@ static int poll_adreno_gmu_reg(struct adreno_device *adreno_dev, 
		usleep_range(10, 100);

	}



	ao_post_poll = gmu_core_dev_read_ao_counter(device);

	ts2 = gmu_core_dev_read_ao_counter(device);



	/* Check one last time */

	adreno_read_gmureg(adreno_dev, offset_name, &val);

	if ((val & mask) == expected_val)

		return 0;



	dev_err(&gmu->pdev->dev, "kgsl hfi poll timeout: always on: %lld ms\n",

		div_u64((ao_post_poll - ao_pre_poll) * 52, USEC_PER_SEC));

	dev_err(&gmu->pdev->dev,

			"Timed out waiting for HFI response. Wait start=%llx end=%llx\n",

			ts1, ts2);



	return -ETIMEDOUT;

}