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Commit d3d3ff1c authored by Shashank Mittal's avatar Shashank Mittal Committed by Matt Wagantall
Browse files

qcom: common_log: add support to dump VSENSE registers 



Allocate memory to dump VSENSE registers at the time of crash.

Change-Id: Ibd896873bc40b723071c66ca7cf1a4bc9b38ad5e
Signed-off-by: default avatarShashank Mittal <mittals@codeaurora.org>
parent 95f00d25

drivers/soc/qcom/common_log.c

+39 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -20,6 +20,7 @@ 


#define MISC_DUMP_DATA_LEN		4096

#define PMIC_DUMP_DATA_LEN		4096

#define VSENSE_DUMP_DATA_LEN		4096



void register_misc_dump(void)

{
@@ -92,6 +93,42 @@ err0: 
	}

}



static void register_vsense_dump(void)

{

	static void *dump_addr;

	int ret;

	struct msm_dump_entry dump_entry;

	struct msm_dump_data *dump_data;



	if (MSM_DUMP_MAJOR(msm_dump_table_version()) > 1) {

		dump_data = kzalloc(sizeof(struct msm_dump_data), GFP_KERNEL);

		if (!dump_data) {

			pr_err("dump data structure allocation failed for vsense data\n");

			return;

		}

		dump_addr = kzalloc(VSENSE_DUMP_DATA_LEN, GFP_KERNEL);

		if (!dump_addr) {

			pr_err("buffer space allocation failed for vsense data\n");

			goto err0;

		}



		dump_data->addr = virt_to_phys(dump_addr);

		dump_data->len = VSENSE_DUMP_DATA_LEN;

		dump_entry.id = MSM_DUMP_DATA_VSENSE;

		dump_entry.addr = virt_to_phys(dump_data);

		ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);

		if (ret) {

			pr_err("Registering vsense dump region failed\n");

			goto err1;

		}

		return;

err1:

		kfree(dump_addr);

err0:

		kfree(dump_data);

	}

}



static void __init common_log_register_log_buf(void)

{

	char **log_bufp;
@@ -160,6 +197,7 @@ static int __init msm_common_log_init(void) 
	common_log_register_log_buf();

	register_misc_dump();

	register_pmic_dump();

	register_vsense_dump();

	return 0;

}

late_initcall(msm_common_log_init);

include/soc/qcom/memory_dump.h

+1 −0
Original line number Diff line number Diff line
@@ -80,6 +80,7 @@ enum msm_dump_data_ids { 
	MSM_DUMP_DATA_DCC_REG = 0xE6,

	MSM_DUMP_DATA_DCC_SRAM = 0xE7,

	MSM_DUMP_DATA_MISC = 0xE8,

	MSM_DUMP_DATA_VSENSE = 0xE9,

	MSM_DUMP_DATA_TMC_ETF = 0xF0,

	MSM_DUMP_DATA_TMC_REG = 0x100,

	MSM_DUMP_DATA_LOG_BUF = 0x110,