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Commit d84815d9 authored by Harshdeep Dhatt's avatar Harshdeep Dhatt
Browse files

msm: kgsl: Check snapshot status after snapshot 



A660 gpu has a new register to track whether any interface
signals changed during snapshot capture.

Change-Id: I24ecc9e98c9c2a745518e95419d5b4cf13fe634c
Signed-off-by: default avatarHarshdeep Dhatt <hdhatt@codeaurora.org>
parent e688535a

drivers/gpu/msm/a6xx_reg.h

+2 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.

 */



#ifndef _A6XX_REG_H
@@ -394,6 +394,7 @@ 


#define A6XX_RBBM_ISDB_CNT                       0x533

#define A6XX_RBBM_NC_MODE_CNTL                   0X534

#define A6XX_RBBM_SNAPSHOT_STATUS                0x535



#define A6XX_RBBM_SECVID_TRUST_CNTL              0xF400

#define A6XX_RBBM_SECVID_TSB_TRUSTED_BASE_LO     0xF800

drivers/gpu/msm/adreno_a6xx_snapshot.c

+16 −0
Original line number Diff line number Diff line
@@ -1830,6 +1830,10 @@ void a6xx_snapshot(struct adreno_device *adreno_dev, 
	if (!gmu_core_dev_gx_is_on(device))

		return;



	/* Assert the isStatic bit before triggering snapshot */

	if (adreno_is_a660(adreno_dev))

		kgsl_regwrite(device, A6XX_RBBM_SNAPSHOT_STATUS, 0x1);



	/* Dump the registers which get affected by crash dumper trigger */

	kgsl_snapshot_add_section(device, KGSL_SNAPSHOT_SECTION_REGS,

		snapshot, a6xx_snapshot_pre_crashdump_regs, NULL);
@@ -1898,6 +1902,18 @@ void a6xx_snapshot(struct adreno_device *adreno_dev, 
		a6xx_snapshot_dbgahb_regs(device, snapshot);

	}



	if (adreno_is_a660(adreno_dev)) {

		u32 val;



		kgsl_regread(device, A6XX_RBBM_SNAPSHOT_STATUS, &val);



		if (!val)

			dev_err(device->dev,

				"Interface signals may have changed during snapshot\n");



		kgsl_regwrite(device, A6XX_RBBM_SNAPSHOT_STATUS, 0x0);

	}



	/* Preemption record */

	if (adreno_is_preemption_enabled(adreno_dev)) {

		FOR_EACH_RINGBUFFER(adreno_dev, rb, i) {