Merge "msm: kgsl: Dump always on counter on hfi timeout" (8cf7fcda) · Commits · e / devices / android_kernel_xiaomi_nabu

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;
		}