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msm: rdbg: remote debugger support on CDSP

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The Remote Debugger driver allows a debugger running
on a host PC to communicate with a remotestub running
on peripheral subsystems.

Change-Id: I3bb02bd784b6b378d707ff8a6422ae9fa912d28d
Acked-by: Chenna Kesava Raju <chennak@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>
This commit is contained in:
tharun kumar 2017-07-08 16:04:49 +05:30 • committed by Gerrit - the friendly Code Review server
parent 9fa4a186c0
commit da37ca0b1f
2 changed files with 17 additions and 6 deletions
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5
Documentation/devicetree/bindings/arm/msm/rdbg-smp2p.txt
View file

@ -2,12 +2,15 @@ Qualcomm Technologies, Inc. Remote Debugger (RDBG) driver
Required properties:
-compatible : Should be one of
To communicate with modem
To communicate with adsp
qcom,smp2pgpio_client_rdbg_2_in (inbound)
qcom,smp2pgpio_client_rdbg_2_out (outbound)
To communicate with modem
qcom,smp2pgpio_client_rdbg_1_in (inbound)
qcom,smp2pgpio_client_rdbg_1_out (outbound)
To communicate with cdsp
qcom,smp2pgpio_client_rdbg_5_in (inbound)
qcom,smp2pgpio_client_rdbg_5_out (outbound)
-gpios : the relevant gpio pins of the entry.
Example:

18
drivers/char/rdbg.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
* Copyright (c) 2013-2017, 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
@ -22,7 +22,7 @@
#include <linux/uaccess.h>
#include <linux/interrupt.h>
#define SMP2P_NUM_PROCS 8
#define SMP2P_NUM_PROCS 16
#define MAX_RETRIES 20
#define SM_VERSION 1
@ -146,9 +146,17 @@ static struct processor_specific_info proc_info[SMP2P_NUM_PROCS] = {
{"rdbg_adsp", SMEM_LC_DEBUGGER, 16*1024}, /*ADSP*/
{0}, /*SMP2P_RESERVED_PROC_1*/
{"rdbg_wcnss", 0, 0}, /*WCNSS*/
{0}, /*SMP2P_RESERVED_PROC_2*/
{0}, /*SMP2P_POWER_PROC*/
{0} /*SMP2P_REMOTE_MOCK_PROC*/
{"rdbg_cdsp", SMEM_LC_DEBUGGER, 16*1024}, /*CDSP*/
{NULL}, /*SMP2P_POWER_PROC*/
{NULL}, /*SMP2P_TZ_PROC*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL}, /*EMPTY*/
{NULL} /*SMP2P_REMOTE_MOCK_PROC*/
};
static int smq_blockmap_get(struct smq_block_map *block_map,