From patchwork Wed Sep 14 17:01:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 605817 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1C6AC6FA82 for ; Wed, 14 Sep 2022 17:02:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229813AbiINRCZ (ORCPT ); Wed, 14 Sep 2022 13:02:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229599AbiINRCY (ORCPT ); Wed, 14 Sep 2022 13:02:24 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0C994BA76; Wed, 14 Sep 2022 10:02:22 -0700 (PDT) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EBSxbS016145; Wed, 14 Sep 2022 17:02:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=O4otGyblllpBPDvOc1ezv7Wz3HXWEbPrUNO9I+gsuss=; b=MijUifpyBMT/+G6hpkfGvEKtOmU0c6ecpExI84cHlYbJ85I07XmpflFVkiKr63IYM9Ty GEAU4S4mNzKOjlPOj7giR9jC66Oo8e8k9+P1K7fxcldEGtAPZeKPua94Uw0o14YZ7FBn KzqVFxDLNuWi+kVKsJO6QU08HwMgQ9K+RYFu6ofka+5MZa2F0dwUngWT/zhj+9jBnSOm KszaSIKmKQiLTlHi8HzHvZKKXkNX68Yws9BOL/f4UdfY+usxG2JKRBeScZGnPU3OZCCG AICnI2WNbngM+l6Gf3c7swNAytsZrLrBxfZj8kIeZI+wmx25qEY4Z85QryL0Pv7X/yco hw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jkd9hs8s2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:12 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2Cv5003124 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:12 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:08 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 1/7] dt-bindings: Added the yaml bindings for DCC Date: Wed, 14 Sep 2022 22:31:11 +0530 Message-ID: <41b94746e1560d63f16fb5dc965042ec496aeaf1.1663173478.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: kPugcyjVki3PjlYo8mJ1G74RS_YQPTeq X-Proofpoint-GUID: kPugcyjVki3PjlYo8mJ1G74RS_YQPTeq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Documentation for Data Capture and Compare(DCC) device tree bindings in yaml format. Reviewed-by: Rob Herring Signed-off-by: Souradeep Chowdhury --- .../devicetree/bindings/arm/msm/qcom,dcc.yaml | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml b/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml new file mode 100644 index 0000000..b7a6619 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/msm/qcom,dcc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Data Capture and Compare + +maintainers: + - Souradeep Chowdhury + +description: | + DCC (Data Capture and Compare) is a DMA engine which is used to save + configuration data or system memory contents during catastrophic failure + or SW trigger. DCC is used to capture and store data for debugging purpose +properties: + compatible: + items: + - enum: + - qcom,sm8150-dcc + - qcom,sc7280-dcc + - qcom,sc7180-dcc + - qcom,sdm845-dcc + - const: qcom,dcc + + reg: + items: + - description: DCC base register region + - description: DCC RAM base register region + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + dma@10a2000{ + compatible = "qcom,sm8150-dcc","qcom,dcc"; + reg = <0x010a2000 0x1000>, + <0x010ad000 0x2000>; + }; From patchwork Wed Sep 14 17:01:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 605815 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B7ADECAAD3 for ; Wed, 14 Sep 2022 17:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230026AbiINRCn (ORCPT ); Wed, 14 Sep 2022 13:02:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230008AbiINRCd (ORCPT ); Wed, 14 Sep 2022 13:02:33 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BF355C9EC; Wed, 14 Sep 2022 10:02:30 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EDGXnR018479; Wed, 14 Sep 2022 17:02:17 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=lLLVqPRzVrrfBf8rDDSu9+TXUfAFnCFsTcORhxJYhps=; b=TXH4PrnUN//ovVQGrk46HACpiq/d/oJLKQk5etngjWYrdlgWEicNugpaHNIG+95D8E7b s6BE1IfuoWRGPjuOX4V6NtWIMO8fpknBPckimPbeH8Jd+4Vv/T86k69i7OZoUeGnAbnY Qaz0fTSWBTHQ0vm8a+4CxVD5a7ZmAnrbnnFyunPc+yVpYZfLuLbgfYUNNtmer+0Q5O4A HTEc7Uh8JlS3qlFGgz/8AyhmxZccIs2gombtwlJkvy0agE0IcFJFl09niuOE5LtD5YTA vSvnA6YLzG/UR20hgM71MdP0SWomhluLPxrbsX6uMlMlraaVa4bUhYtYrUkyxkG5JEJm QQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjxyubf90-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:17 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2GVj000689 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:16 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:12 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 2/7] soc: qcom: dcc:Add driver support for Data Capture and Compare unit(DCC) Date: Wed, 14 Sep 2022 22:31:12 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 6MDQHaixytyczxZ7Ov9D255TBs7jOmjC X-Proofpoint-ORIG-GUID: 6MDQHaixytyczxZ7Ov9D255TBs7jOmjC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 bulkscore=0 clxscore=1015 adultscore=0 mlxscore=0 suspectscore=0 malwarescore=0 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The DCC is a DMA Engine designed to capture and store data during system crash or software triggers. The DCC operates based on user inputs via the debugfs interface. The user gives addresses as inputs and these addresses are stored in the dcc sram. In case of a system crash or a manual software trigger by the user through the debugfs interface, the dcc captures and stores the values at these addresses. This patch contains the driver which has all the methods pertaining to the debugfs interface, auxiliary functions to support all the four fundamental operations of dcc namely read, write, read/modify/write and loop. The probe method here instantiates all the resources necessary for dcc to operate mainly the dedicated dcc sram where it stores the values. The DCC driver can be used for debugging purposes without going for a reboot since it can perform software triggers as well based on user inputs. Also added the documentation for debugfs entries and explained the functionalities of each debugfs file that has been created for dcc. The following is the justification of using debugfs interface over the other alternatives like sysfs/ioctls i) As can be seen from the debugfs attribute descriptions, some of the debugfs attribute files here contains multiple arguments which needs to be accepted from the user. This goes against the design style of sysfs. ii) The user input patterns have been made simple and convenient in this case with the use of debugfs interface as user doesn't need to shuffle between different files to execute one instruction as was the case on using other alternatives. Signed-off-by: Souradeep Chowdhury --- Documentation/ABI/testing/debugfs-driver-dcc | 98 ++ drivers/soc/qcom/Kconfig | 8 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/dcc.c | 1355 ++++++++++++++++++++++++++ 4 files changed, 1462 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-driver-dcc create mode 100644 drivers/soc/qcom/dcc.c -- 2.7.4 diff --git a/Documentation/ABI/testing/debugfs-driver-dcc b/Documentation/ABI/testing/debugfs-driver-dcc new file mode 100644 index 0000000..0e8384c --- /dev/null +++ b/Documentation/ABI/testing/debugfs-driver-dcc @@ -0,0 +1,98 @@ +What: /sys/kernel/debug/dcc/.../ready +Date: September 2022 +Contact: Souradeep Chowdhury +Description: + This file is used to check the status of the dcc + hardware if it's ready to take the inputs. A 'Y' + here indicates dcc is in a ready condition. + Example: + cat /sys/kernel/debug/dcc/.../ready + +What: /sys/kernel/debug/dcc/.../trigger +Date: September 2022 +Contact: Souradeep Chowdhury +Description: + This is the debugfs interface for manual software + triggers. The user can simply enter a 1 against + the debugfs file and enable a manual trigger. + Example: + echo 1 > /sys/kernel/debug/dcc/.../trigger + +What: /sys/kernel/debug/dcc/.../config_reset +Date: September 2022 +Contact: Souradeep Chowdhury +Description: + This file is used to reset the configuration of + a dcc driver to the default configuration. This + means that all the previous addresses stored in + the driver gets removed and user needs to enter + the address values from the start. + Example: + echo 1 > /sys/kernel/debug/dcc/../config_reset + +What: /sys/kernel/debug/dcc/.../[list-number]/config +Date: September 2022 +Contact: Souradeep Chowdhury +Description: + This stores the addresses of the registers which + should be read in case of a hardware crash or + manual software triggers. The addresses entered here + are considered under all the 4 types of dcc + instructions Read type, Write type, Read Modify Write + type and Loop type. The lists need to be configured + sequentially and not in a overlapping manner. As an + example user can jump to list x only after list y is + configured and enabled. The format for entering all + types of instructions are explained in examples as + follows. + Example: + i)Read Type Instruction + echo R <1> <2> <3> >/sys/kernel/debug/dcc/../[list-number]/config + 1->Address to be considered for reading the value. + 2->The word count of the addresses, read n words + starting from address <1>. Each word is of 32 bits. + If not entered 1 is considered. + 3->Can be 'apb' or 'ahb' which indicates if it is apb or ahb + bus respectively. If not entered ahb is considered. + ii)Write Type Instruction + echo W <1> <2> <3> > /sys/kernel/debug/dcc/../[list-number]/config + 1->Address to be considered for writing the value. + 2->The value that needs to be written at the location. + 3->Can be a "apb" or "ahb" which indicates if it is apb or ahb + bus respectively. + iii)Read Modify Write type instruction + echo RW <1> <2> <3> > /sys/kernel/debug/dcc/../[list-number]/config + 1->The address which needs to be considered for read then write. + 2->The value that needs to be written on the address. + 3->The mask of the value to be written. + iv)Loop Type Instruction + echo L <1> <2> <3> > /sys/kernel/debug/dcc/../[list-number]/config + 1->The loop count, the number of times the value of the addresses will be + captured. + 2->The address count, total number of addresses to be entered in this + instruction. + 3->The series of addresses to be entered separated by a space like + ... and so on. + +What: /sys/kernel/debug/dcc/.../[list-number]/enable +Date: September 2022 +Contact: Souradeep Chowdhury +Description: + This debugfs interface is used for enabling the + the dcc hardware. Enable file is kept under the + directory list number for which the user wants + to enable it. For example if the user wants to + enable list 1, then he should go for + echo 1 > /sys/kernel/debug/dcc/.../1/enable. + On enabling the dcc, all the addresses entered + by the user for the corresponding list is written + into dcc sram which is read by the dcc hardware + on manual or crash induced triggers. Lists should + be enabled sequentially.For example after configuring + addresses for list 1 and enabling it, a user can + proceed to enable list 2 or vice versa. + Example: + echo 0 > /sys/kernel/debug/dcc/.../[list-number]/enable + (disable dcc for the corresponding list number) + echo 1 > /sys/kernel/debug/dcc/.../[list-number]/enable + (enable dcc for the corresponding list number) diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index 79b568f..5101912 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -69,6 +69,14 @@ config QCOM_LLCC SDM845. This provides interfaces to clients that use the LLCC. Say yes here to enable LLCC slice driver. +config QCOM_DCC + tristate "Qualcomm Technologies, Inc. Data Capture and Compare(DCC) engine driver" + depends on ARCH_QCOM || COMPILE_TEST + help + This option enables driver for Data Capture and Compare engine. DCC + driver provides interface to configure DCC block and read back + captured data from DCC's internal SRAM. + config QCOM_KRYO_L2_ACCESSORS bool depends on ARCH_QCOM && ARM64 || COMPILE_TEST diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index ad675a6..0aaf82b 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_QCOM_AOSS_QMP) += qcom_aoss.o obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o obj-$(CONFIG_QCOM_CPR) += cpr.o +obj-$(CONFIG_QCOM_DCC) += dcc.o obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o obj-$(CONFIG_QCOM_OCMEM) += ocmem.o diff --git a/drivers/soc/qcom/dcc.c b/drivers/soc/qcom/dcc.c new file mode 100644 index 0000000..915826f --- /dev/null +++ b/drivers/soc/qcom/dcc.c @@ -0,0 +1,1355 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copneight (c) 2015-2021, The Linex Fnendation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define STATUS_READY_TIMEOUT 5000 /*microseconds*/ + +#define DCC_SRAM_NODE "dcc_sram" + +/* DCC registers */ +#define DCC_HW_INFO 0x04 +#define DCC_LL_NUM_INFO 0x10 +#define DCC_STATUS(vers) ((vers) == 1 ? 0x0c : 0x1c) +#define DCC_LL_OFFSET(vers) \ + ((vers) == 1 ? 0x1c : ((vers) == 2 ? 0x2c : 0x34)) +#define DCC_LL_LOCK 0x00 +#define DCC_LL_CFG 0x04 +#define DCC_LL_BASE 0x08 +#define DCC_FD_BASE 0x0c +#define DCC_LL_TIMEOUT 0x10 +#define DCC_LL_INT_ENABLE 0x18 +#define DCC_LL_INT_STATUS 0x1c +#define DCC_LL_SW_TRIGGER 0x2c +#define DCC_LL_BUS_ACCESS_STATUS 0x30 + +#define DCC_MAP_LEVEL1 0x18 +#define DCC_MAP_LEVEL2 0x34 +#define DCC_MAP_LEVEL3 0x4C + +#define DCC_MAP_OFFSET1 0x10 +#define DCC_MAP_OFFSET2 0x18 +#define DCC_MAP_OFFSET3 0x1C +#define DCC_MAP_OFFSET4 0x8 + +/*Default value used if a bit 6 in the HW_INFO register is set.*/ +#define DCC_FIX_LOOP_OFFSET 16 + +/*Mask to find version info from HW_Info register*/ +#define DCC_VER_INFO_MASK BIT(9) + +#define DCC_READ 0 +#define DCC_WRITE 1 +#define DCC_LOOP 2 +#define DCC_READ_WRITE 3 + +#define MAX_DCC_OFFSET GENMASK(9, 2) +#define MAX_DCC_LEN GENMASK(6, 0) +#define MAX_LOOP_CNT GENMASK(7, 0) +#define MAX_LOOP_ADDR 10 + +#define DCC_ADDR_DESCRIPTOR 0x00 +#define DCC_ADDR_LIMIT 27 +#define DCC_ADDR_OFF_RANGE 8 +#define DCC_ADDR_RANGE_MASK GENMASK(31, 4) +#define DCC_LOOP_DESCRIPTOR BIT(30) +#define DCC_RD_MOD_WR_DESCRIPTOR BIT(31) +#define DCC_LINK_DESCRIPTOR GENMASK(31, 30) +#define DCC_STATUS_MASK GENMASK(1, 0) +#define DCC_LOCK_MASK BIT(0) +#define DCC_LOOP_OFFSET_MASK BIT(6) +#define DCC_TRIGGER_MASK BIT(9) + +#define DCC_READ_IND 0x00 +#define DCC_WRITE_IND (BIT(28)) + +#define DCC_AHB_IND 0x00 +#define DCC_APB_IND BIT(29) + +#define DCC_MAX_LINK_LIST 8 +#define DCC_INVALID_LINK_LIST GENMASK(7, 0) + +#define DCC_VER_MASK1 GENMASK(6, 0) +#define DCC_VER_MASK2 GENMASK(5, 0) + +#define DCC_RD_MOD_WR_ADDR 0xC105E + +/*DCC debugfs directory*/ +static struct dentry *dcc_dbg; + +enum dcc_descriptor_type { + DCC_READ_TYPE, + DCC_LOOP_TYPE, + DCC_READ_WRITE_TYPE, + DCC_WRITE_TYPE +}; + +struct dcc_config_entry { + u32 base; + u32 offset; + u32 len; + u32 loop_cnt; + u32 write_val; + u32 mask; + bool apb_bus; + enum dcc_descriptor_type desc_type; + struct list_head list; +}; + +/** + * struct dcc_drvdata - configuration information related to a dcc device + * @base: Base Address of the dcc device + * @dev: The device attached to the driver data + * @mutex: Lock to protect access and manipulation of dcc_drvdata + * @ram_base: Base address for the SRAM dedicated for the dcc device + * @ram_offset: Offset to the SRAM dedicated for dcc device + * @mem_map_ver: Memory map version of DCC hardware + * @ram_cfg: Used for address limit calculation for dcc + * @ram_start: Starting address of DCC SRAM + * @sram_dev: Micellaneous device equivalent of dcc SRAM + * @cfg_head: Points to the head of the linked list of addresses + * @dbg_dir: The dcc debugfs directory under which all the debugfs files are placed + * @nr_link_list: Total number of linkedlists supported by the DCC configuration + * @loopoff: Loop offset bits range for the addresses + * @enable: This contains an array of linkedlist enable flags + */ +struct dcc_drvdata { + void __iomem *base; + struct device *dev; + struct mutex mutex; + void __iomem *ram_base; + size_t ram_size; + size_t ram_offset; + int mem_map_ver; + phys_addr_t ram_cfg; + phys_addr_t ram_start; + struct miscdevice sram_dev; + struct list_head *cfg_head; + struct dentry *dbg_dir; + size_t nr_link_list; + u8 loopoff; + bool *enable; +}; + +struct dcc_cfg_attr { + u32 addr; + u32 prev_addr; + u32 prev_off; + u32 link; + u32 sram_offset; +}; + +struct dcc_cfg_loop_attr { + u32 loop; + u32 loop_cnt; + u32 loop_len; + u32 loop_off; + bool loop_start; +}; + +static size_t dcc_offset_conv(struct dcc_drvdata *drvdata, size_t off) +{ + /* If the memory map version is 1, adjust the offset based on + * the dcc version mask. If the memory map version is 2 + * adjust the offset if the dcc version mask is greater than + * map level 2.For other conditions, just return the offset. + */ + if (drvdata->mem_map_ver == 1) { + if (FIELD_GET(DCC_VER_MASK1, off) >= DCC_MAP_LEVEL3) + return off - DCC_MAP_OFFSET3; + if (FIELD_GET(DCC_VER_MASK1, off) >= DCC_MAP_LEVEL2) + return off - DCC_MAP_OFFSET2; + else if (FIELD_GET(DCC_VER_MASK1, off) >= DCC_MAP_LEVEL1) + return off - DCC_MAP_OFFSET1; + } else if (drvdata->mem_map_ver == 2) { + if (FIELD_GET(DCC_VER_MASK1, off) >= DCC_MAP_LEVEL2) + return off - DCC_MAP_OFFSET4; + } + + return off; +} + +static inline u32 dcc_readl(struct dcc_drvdata *drvdata, u32 off) +{ + return readl(drvdata->base + dcc_offset_conv(drvdata, off)); +} + +static inline void dcc_ll_writel(struct dcc_drvdata *drvdata, + u32 ll, u32 val, u32 off) +{ + u32 offset = DCC_LL_OFFSET(drvdata->mem_map_ver) + off; + + writel((val), drvdata->base + ll * 0x80 + offset); +} + +static inline u32 dcc_ll_readl(struct dcc_drvdata *drvdata, u32 ll, u32 off) +{ + u32 offset = DCC_LL_OFFSET(drvdata->mem_map_ver) + off; + + return readl(drvdata->base + ll * 0x80 + offset); +} + +static void dcc_sram_write_auto(struct dcc_drvdata *drvdata, + u32 val, u32 *off) +{ + writel(val, drvdata->ram_base + *off); + + *off += 4; +} + +static int dcc_read_and_clear(struct dcc_drvdata *drvdata) +{ + int i; + u32 bus_status; + u32 ll_cfg; + u32 tmp_ll_cfg; + + for (i = 0; i < drvdata->nr_link_list; i++) { + if (!drvdata->enable[i]) + continue; + + bus_status = dcc_ll_readl(drvdata, i, DCC_LL_BUS_ACCESS_STATUS); + if (!bus_status) + continue; + + dev_err(drvdata->dev, + "Read access error for list %d err: 0x%x.\n", i, bus_status); + ll_cfg = dcc_ll_readl(drvdata, i, DCC_LL_CFG); + tmp_ll_cfg = ll_cfg & ~DCC_TRIGGER_MASK; + dcc_ll_writel(drvdata, tmp_ll_cfg, i, DCC_LL_CFG); + dcc_ll_writel(drvdata, DCC_STATUS_MASK, i, + DCC_LL_BUS_ACCESS_STATUS); + dcc_ll_writel(drvdata, ll_cfg, i, DCC_LL_CFG); + return -ENODATA; + } + + return 0; +} + +static int dcc_sw_trigger(struct dcc_drvdata *drvdata) +{ + void __iomem *addr; + int ret; + int i; + u32 ll_cfg; + u32 tmp_ll_cfg; + u32 val; + + mutex_lock(&drvdata->mutex); + + for (i = 0; i < drvdata->nr_link_list; i++) { + if (!drvdata->enable[i]) + continue; + ll_cfg = dcc_ll_readl(drvdata, i, DCC_LL_CFG); + tmp_ll_cfg = ll_cfg & ~DCC_TRIGGER_MASK; + dcc_ll_writel(drvdata, tmp_ll_cfg, i, DCC_LL_CFG); + dcc_ll_writel(drvdata, 1, i, DCC_LL_SW_TRIGGER); + dcc_ll_writel(drvdata, ll_cfg, i, DCC_LL_CFG); + } + + addr = drvdata->base + DCC_STATUS(drvdata->mem_map_ver); + if (readl_poll_timeout(addr, val, (FIELD_GET(DCC_STATUS_MASK, val) == 0), + 1, STATUS_READY_TIMEOUT)) { + dev_err(drvdata->dev, + "DCC is busy after receiving sw tigger.\n"); + ret = -EBUSY; + goto out_unlock; + } + + ret = dcc_read_and_clear(drvdata); + +out_unlock: + mutex_unlock(&drvdata->mutex); + return ret; +} + +static void _dcc_ll_cfg_reset_link(struct dcc_cfg_attr *cfg) +{ + cfg->addr = 0x00; + cfg->link = 0; + cfg->prev_off = 0; + cfg->prev_addr = cfg->addr; +} + +static void _dcc_emit_read_write(struct dcc_drvdata *drvdata, + struct dcc_config_entry *entry, + struct dcc_cfg_attr *cfg) +{ + if (cfg->link) { + /* + * write new offset = 1 to continue + * processing the list + */ + + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + + /* Reset link and prev_off */ + _dcc_ll_cfg_reset_link(cfg); + } + + cfg->addr = DCC_RD_MOD_WR_DESCRIPTOR; + dcc_sram_write_auto(drvdata, cfg->addr, &cfg->sram_offset); + + dcc_sram_write_auto(drvdata, entry->mask, &cfg->sram_offset); + + dcc_sram_write_auto(drvdata, entry->write_val, &cfg->sram_offset); + + cfg->addr = 0; +} + +static void _dcc_emit_loop(struct dcc_drvdata *drvdata, struct dcc_config_entry *entry, + struct dcc_cfg_attr *cfg, + struct dcc_cfg_loop_attr *cfg_loop, + u32 *total_len) +{ + /* Check if we need to write link of prev entry */ + if (cfg->link) + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + + if (cfg_loop->loop_start) { + cfg_loop->loop = (cfg->sram_offset - cfg_loop->loop_off) / 4; + cfg_loop->loop |= (cfg_loop->loop_cnt << drvdata->loopoff) & + GENMASK(DCC_ADDR_LIMIT, drvdata->loopoff); + cfg_loop->loop |= DCC_LOOP_DESCRIPTOR; + *total_len += (*total_len - cfg_loop->loop_len) * cfg_loop->loop_cnt; + + dcc_sram_write_auto(drvdata, cfg_loop->loop, &cfg->sram_offset); + + cfg_loop->loop_start = false; + cfg_loop->loop_len = 0; + cfg_loop->loop_off = 0; + } else { + cfg_loop->loop_start = true; + cfg_loop->loop_cnt = entry->loop_cnt - 1; + cfg_loop->loop_len = *total_len; + cfg_loop->loop_off = cfg->sram_offset; + } + + /* Reset link and prev_off */ + _dcc_ll_cfg_reset_link(cfg); +} + +static void _dcc_emit_write(struct dcc_drvdata *drvdata, + struct dcc_config_entry *entry, + struct dcc_cfg_attr *cfg, + u32 *total_len) +{ + u32 off; + + if (cfg->link) { + /* + * write new offset = 1 to continue + * processing the list + */ + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + + /* Reset link and prev_off */ + cfg->addr = 0x00; + cfg->prev_off = 0; + cfg->prev_addr = cfg->addr; + } + + off = entry->offset/4; + /* write new offset-length pair to correct position */ + cfg->link |= ((off & GENMASK(7, 0)) | BIT(15) | ((entry->len << 8) & GENMASK(14, 8))); + cfg->link |= DCC_LINK_DESCRIPTOR; + + /* Address type */ + cfg->addr = (entry->base >> 4) & GENMASK(DCC_ADDR_LIMIT, 0); + if (entry->apb_bus) + cfg->addr |= DCC_ADDR_DESCRIPTOR | DCC_WRITE_IND | DCC_APB_IND; + else + cfg->addr |= DCC_ADDR_DESCRIPTOR | DCC_WRITE_IND | DCC_AHB_IND; + dcc_sram_write_auto(drvdata, cfg->addr, &cfg->sram_offset); + + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + + dcc_sram_write_auto(drvdata, entry->write_val, &cfg->sram_offset); + + cfg->addr = 0x00; + cfg->link = 0; +} + +static int _dcc_emit_read(struct dcc_drvdata *drvdata, + struct dcc_config_entry *entry, + struct dcc_cfg_attr *cfg, + u32 *pos, u32 *total_len) +{ + int ret = 0; + u32 off; + u32 temp_off; + + cfg->addr = (entry->base >> 4) & GENMASK(27, 0); + + if (entry->apb_bus) + cfg->addr |= DCC_ADDR_DESCRIPTOR | DCC_READ_IND | DCC_APB_IND; + else + cfg->addr |= DCC_ADDR_DESCRIPTOR | DCC_READ_IND | DCC_AHB_IND; + + off = entry->offset/4; + + *total_len += entry->len * 4; + + if (!cfg->prev_addr || cfg->prev_addr != cfg->addr || cfg->prev_off > off) { + /* Check if we need to write prev link entry */ + if (cfg->link) + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + dev_dbg(drvdata->dev, "DCC: sram address 0x%x\n", cfg->sram_offset); + + /* Write address */ + dcc_sram_write_auto(drvdata, cfg->addr, &cfg->sram_offset); + + /* Reset link and prev_off */ + cfg->link = 0; + cfg->prev_off = 0; + } + + if ((off - cfg->prev_off) > 0xFF || entry->len > MAX_DCC_LEN) { + dev_err(drvdata->dev, "DCC: Programming error Base: 0x%x, offset 0x%x\n", + entry->base, entry->offset); + ret = -EINVAL; + return ret; + } + + if (cfg->link) { + /* + * link already has one offset-length so new + * offset-length needs to be placed at + * bits [29:15] + */ + *pos = 15; + + /* Clear bits [31:16] */ + cfg->link &= GENMASK(14, 0); + } else { + /* + * link is empty, so new offset-length needs + * to be placed at bits [15:0] + */ + *pos = 0; + cfg->link = 1 << 15; + } + + /* write new offset-length pair to correct position */ + temp_off = (off-cfg->prev_off) & GENMASK(7, 0); + cfg->link |= temp_off |((entry->len << 8) & GENMASK(14, 8)) << *pos; + + cfg->link |= DCC_LINK_DESCRIPTOR; + + if (*pos) { + dcc_sram_write_auto(drvdata, cfg->link, &cfg->sram_offset); + cfg->link = 0; + } + + cfg->prev_off = off + entry->len - 1; + cfg->prev_addr = cfg->addr; + return ret; +} + +static int __dcc_emit_config(struct dcc_drvdata *drvdata, int curr_list) +{ + int ret; + u32 total_len, pos; + struct dcc_config_entry *entry; + struct dcc_cfg_attr cfg; + struct dcc_cfg_loop_attr cfg_loop; + + memset(&cfg, 0, sizeof(cfg)); + memset(&cfg_loop, 0, sizeof(cfg_loop)); + cfg.sram_offset = drvdata->ram_cfg * 4; + total_len = 0; + + list_for_each_entry(entry, &drvdata->cfg_head[curr_list], list) { + switch (entry->desc_type) { + case DCC_READ_WRITE_TYPE: + _dcc_emit_read_write(drvdata, entry, &cfg); + break; + + case DCC_LOOP_TYPE: + _dcc_emit_loop(drvdata, entry, &cfg, &cfg_loop, &total_len); + break; + + case DCC_WRITE_TYPE: + _dcc_emit_write(drvdata, entry, &cfg, &total_len); + break; + + case DCC_READ_TYPE: + ret = _dcc_emit_read(drvdata, entry, &cfg, &pos, &total_len); + if (ret) + goto overstep; + break; + } + } + + if (cfg.link) + dcc_sram_write_auto(drvdata, cfg.link, &cfg.sram_offset); + + if (cfg_loop.loop_start) { + dev_err(drvdata->dev, "DCC: Programming error: Loop unterminated\n"); + ret = -EINVAL; + goto err; + } + + /* Handling special case of list ending with a rd_mod_wr */ + if (cfg.addr == DCC_RD_MOD_WR_DESCRIPTOR) { + cfg.addr = (DCC_RD_MOD_WR_ADDR) & GENMASK(27, 0); + cfg.addr |= DCC_ADDR_DESCRIPTOR; + dcc_sram_write_auto(drvdata, cfg.addr, &cfg.sram_offset); + } + + /* Setting zero to indicate end of the list */ + cfg.link = DCC_LINK_DESCRIPTOR; + dcc_sram_write_auto(drvdata, cfg.link, &cfg.sram_offset); + + /*Check if sram offset exceeds the ram size*/ + if (cfg.sram_offset > drvdata->ram_size) + goto overstep; + + /* Update ram_cfg and check if the data will overstep */ + drvdata->ram_cfg = (cfg.sram_offset + total_len) / 4; + + if (cfg.sram_offset + total_len > drvdata->ram_size) { + cfg.sram_offset += total_len; + goto overstep; + } + + drvdata->ram_start = cfg.sram_offset/4; + return 0; +overstep: + ret = -EINVAL; + memset_io(drvdata->ram_base, 0, drvdata->ram_size); + +err: + return ret; +} + +static int dcc_valid_list(struct dcc_drvdata *drvdata, int curr_list) +{ + u32 lock_reg; + + if (list_empty(&drvdata->cfg_head[curr_list])) + return -EINVAL; + + if (drvdata->enable[curr_list]) { + dev_err(drvdata->dev, "List %d is already enabled\n", + curr_list); + return -EINVAL; + } + + lock_reg = dcc_ll_readl(drvdata, curr_list, DCC_LL_LOCK); + if (lock_reg & DCC_LOCK_MASK) { + dev_err(drvdata->dev, "List %d is already locked\n", + curr_list); + return -EINVAL; + } + + return 0; +} + +static bool is_dcc_enabled(struct dcc_drvdata *drvdata) +{ + bool dcc_enable = false; + int list; + + for (list = 0; list < DCC_MAX_LINK_LIST; list++) { + if (drvdata->enable[list]) { + dcc_enable = true; + break; + } + } + + return dcc_enable; +} + +static int dcc_enable(struct dcc_drvdata *drvdata, int curr_list) +{ + int ret; + u32 ram_cfg_base; + + mutex_lock(&drvdata->mutex); + + ret = dcc_valid_list(drvdata, curr_list); + if (ret) + goto out_unlock; + + /* Fill dcc sram with the poison value. + * This helps in understanding bus + * hang from registers returning a zero + */ + if (!is_dcc_enabled(drvdata)) { + memset_io(drvdata->ram_base, + 0xde, drvdata->ram_size); + } + + /* 1. Take ownership of the list */ + dcc_ll_writel(drvdata, DCC_LOCK_MASK, curr_list, DCC_LL_LOCK); + + /* 2. Program linked-list in the SRAM */ + ram_cfg_base = drvdata->ram_cfg; + ret = __dcc_emit_config(drvdata, curr_list); + if (ret) { + dcc_ll_writel(drvdata, 0, curr_list, DCC_LL_LOCK); + goto out_unlock; + } + + /* 3. Program DCC_RAM_CFG reg */ + dcc_ll_writel(drvdata, ram_cfg_base + + drvdata->ram_offset/4, curr_list, DCC_LL_BASE); + dcc_ll_writel(drvdata, drvdata->ram_start + + drvdata->ram_offset/4, curr_list, DCC_FD_BASE); + dcc_ll_writel(drvdata, 0xFFF, curr_list, DCC_LL_TIMEOUT); + + /* 4. Clears interrupt status register */ + dcc_ll_writel(drvdata, 0, curr_list, DCC_LL_INT_ENABLE); + dcc_ll_writel(drvdata, (BIT(0) | BIT(1) | BIT(2)), + curr_list, DCC_LL_INT_STATUS); + + drvdata->enable[curr_list] = true; + + /* 5. Configure trigger */ + dcc_ll_writel(drvdata, DCC_TRIGGER_MASK, + curr_list, DCC_LL_CFG); + +out_unlock: + mutex_unlock(&drvdata->mutex); + return ret; +} + +static void dcc_disable(struct dcc_drvdata *drvdata, int curr_list) +{ + mutex_lock(&drvdata->mutex); + + if (!drvdata->enable[curr_list]) + goto out_unlock; + dcc_ll_writel(drvdata, 0, curr_list, DCC_LL_CFG); + dcc_ll_writel(drvdata, 0, curr_list, DCC_LL_BASE); + dcc_ll_writel(drvdata, 0, curr_list, DCC_FD_BASE); + dcc_ll_writel(drvdata, 0, curr_list, DCC_LL_LOCK); + drvdata->enable[curr_list] = false; +out_unlock: + mutex_unlock(&drvdata->mutex); +} + +static u32 dcc_filp_curr_list(struct file *filp) +{ + struct dentry *dentry = file_dentry(filp); + int curr_list, ret; + + ret = kstrtoint(dentry->d_parent->d_name.name, 0, &curr_list); + return curr_list; +} + +static ssize_t enable_read(struct file *filp, char __user *userbuf, + size_t count, loff_t *ppos) +{ + int curr_list; + char *buf; + struct dcc_drvdata *drvdata = filp->private_data; + + curr_list = dcc_filp_curr_list(filp); + + mutex_lock(&drvdata->mutex); + + if (is_dcc_enabled(drvdata)) + buf = "Y\n"; + else + buf = "N\n"; + + mutex_unlock(&drvdata->mutex); + + return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf) + 1); +} + +static ssize_t enable_write(struct file *filp, const char __user *userbuf, + size_t count, loff_t *ppos) +{ + int ret = 0, curr_list; + bool val; + struct dcc_drvdata *drvdata = filp->private_data; + + curr_list = dcc_filp_curr_list(filp); + + ret = kstrtobool_from_user(userbuf, count, &val); + if (ret < 0) + return ret; + + if (val) + ret = dcc_enable(drvdata, curr_list); + else + dcc_disable(drvdata, curr_list); + + if (!ret) + ret = count; + + return ret; +} + +static const struct file_operations enable_fops = { + .read = enable_read, + .write = enable_write, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static ssize_t trigger_write(struct file *filp, + const char __user *user_buf, size_t count, + loff_t *ppos) +{ + int ret = 0; + unsigned int val; + struct dcc_drvdata *drvdata = filp->private_data; + + ret = kstrtouint_from_user(user_buf, count, 0, &val); + if (ret < 0) + return ret; + + if (val != 1) + return -EINVAL; + + ret = dcc_sw_trigger(drvdata); + if (!ret) + ret = count; + + return ret; +} + +static const struct file_operations trigger_fops = { + .write = trigger_write, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static int dcc_config_add(struct dcc_drvdata *drvdata, unsigned int addr, + unsigned int len, int apb_bus, int curr_list) +{ + int ret = 0; + struct dcc_config_entry *entry, *pentry; + unsigned int base, offset; + + mutex_lock(&drvdata->mutex); + + if (!len || len > drvdata->ram_size / DCC_ADDR_OFF_RANGE) { + dev_err(drvdata->dev, "DCC: Invalid length\n"); + ret = -EINVAL; + goto err; + } + + base = addr & DCC_ADDR_RANGE_MASK; + + if (!list_empty(&drvdata->cfg_head[curr_list])) { + pentry = list_last_entry(&drvdata->cfg_head[curr_list], + struct dcc_config_entry, list); + + if (pentry->desc_type == DCC_READ_TYPE && + addr >= (pentry->base + pentry->offset) && + addr <= (pentry->base + + pentry->offset + MAX_DCC_OFFSET)) { + + /* Re-use base address from last entry */ + base = pentry->base; + + if ((pentry->len * 4 + pentry->base + pentry->offset) + == addr) { + len += pentry->len; + + if (len > MAX_DCC_LEN) + pentry->len = MAX_DCC_LEN; + else + pentry->len = len; + + addr = pentry->base + pentry->offset + + pentry->len * 4; + len -= pentry->len; + } + } + } + + offset = addr - base; + + while (len) { + entry = devm_kzalloc(drvdata->dev, sizeof(*entry), GFP_KERNEL); + if (!entry) { + ret = -ENOMEM; + goto err; + } + + entry->base = base; + entry->offset = offset; + entry->len = min_t(u32, len, MAX_DCC_LEN); + entry->desc_type = DCC_READ_TYPE; + entry->apb_bus = apb_bus; + INIT_LIST_HEAD(&entry->list); + list_add_tail(&entry->list, + &drvdata->cfg_head[curr_list]); + + len -= entry->len; + offset += MAX_DCC_LEN * 4; + } + +err: + mutex_unlock(&drvdata->mutex); + return ret; +} + +static ssize_t dcc_config_add_read(struct dcc_drvdata *drvdata, char *buf, int curr_list) +{ + int ret, len, nval, bus; + unsigned int base; + char apb_bus[4]; + + nval = sscanf(buf, "%x %i %s", &base, &len, apb_bus); + if (nval <= 0 || nval > 3) + return -EINVAL; + + if (nval == 1) { + len = 1; + bus = 0; + } else if (nval == 2) { + bus = 0; + } else if (!strcmp("apb", apb_bus)) { + bus = 1; + } else if (!strcmp("ahb", apb_bus)) { + bus = 0; + } else { + return -EINVAL; + } + + ret = dcc_config_add(drvdata, base, len, bus, curr_list); + return ret; + +} + +static void dcc_config_reset(struct dcc_drvdata *drvdata) +{ + struct dcc_config_entry *entry, *temp; + int curr_list; + + mutex_lock(&drvdata->mutex); + + for (curr_list = 0; curr_list < drvdata->nr_link_list; curr_list++) { + list_for_each_entry_safe(entry, temp, + &drvdata->cfg_head[curr_list], list) { + list_del(&entry->list); + devm_kfree(drvdata->dev, entry); + } + } + drvdata->ram_start = 0; + drvdata->ram_cfg = 0; + mutex_unlock(&drvdata->mutex); +} + +static ssize_t config_reset_write(struct file *filp, + const char __user *user_buf, size_t count, + loff_t *ppos) +{ + unsigned int val, ret; + struct dcc_drvdata *drvdata = filp->private_data; + + ret = kstrtouint_from_user(user_buf, count, 0, &val); + if (ret < 0) + return ret; + + if (val) + dcc_config_reset(drvdata); + + return count; +} + +static const struct file_operations config_reset_fops = { + .write = config_reset_write, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static ssize_t ready_read(struct file *filp, char __user *userbuf, + size_t count, loff_t *ppos) +{ + int ret = 0; + char *buf; + struct dcc_drvdata *drvdata = filp->private_data; + + mutex_lock(&drvdata->mutex); + + if (!is_dcc_enabled(drvdata)) { + ret = -EINVAL; + goto err; + } + + if (!FIELD_GET(BIT(1), readl(drvdata->base + DCC_STATUS(drvdata->mem_map_ver)))) + buf = "Y\n"; + else + buf = "N\n"; +err: + mutex_unlock(&drvdata->mutex); + + if (ret >= 0) + return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf) + 1); + else + return ret; +} + +static const struct file_operations ready_fops = { + .read = ready_read, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static int dcc_add_loop(struct dcc_drvdata *drvdata, unsigned long loop_cnt, int curr_list) +{ + struct dcc_config_entry *entry; + + entry = devm_kzalloc(drvdata->dev, sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + + entry->loop_cnt = min_t(u32, loop_cnt, MAX_LOOP_CNT); + entry->desc_type = DCC_LOOP_TYPE; + INIT_LIST_HEAD(&entry->list); + list_add_tail(&entry->list, &drvdata->cfg_head[curr_list]); + + return 0; +} + +static ssize_t dcc_config_add_loop(struct dcc_drvdata *drvdata, char *buf, int curr_list) +{ + int ret, cnt = 2, i = 0; + char *token, *input; + char delim[2] = " "; + unsigned int val[MAX_LOOP_ADDR]; + + input = buf; + + token = strsep(&input, delim); + while (token != NULL) { + ret = kstrtoint(token, 0, &val[i++]); + if (ret) + return ret; + + token = strsep(&input, delim); + } + + ret = dcc_add_loop(drvdata, val[0], curr_list); + if (ret) + return ret; + + for (i = 0; i < val[1]; i++) + dcc_config_add(drvdata, val[cnt++], 1, 0, curr_list); + + ret = dcc_add_loop(drvdata, 1, curr_list); + + return ret; +} + +static int dcc_rd_mod_wr_add(struct dcc_drvdata *drvdata, unsigned int mask, + unsigned int val, int curr_list) +{ + int ret = 0; + struct dcc_config_entry *entry; + + mutex_lock(&drvdata->mutex); + + if (list_empty(&drvdata->cfg_head[curr_list])) { + dev_err(drvdata->dev, "DCC: No read address programmed\n"); + ret = -EPERM; + goto err; + } + + entry = devm_kzalloc(drvdata->dev, sizeof(*entry), GFP_KERNEL); + if (!entry) { + ret = -ENOMEM; + goto err; + } + + entry->desc_type = DCC_READ_WRITE_TYPE; + entry->mask = mask; + entry->write_val = val; + INIT_LIST_HEAD(&entry->list); + list_add_tail(&entry->list, &drvdata->cfg_head[curr_list]); +err: + mutex_unlock(&drvdata->mutex); + return ret; +} + +static ssize_t dcc_config_add_read_write(struct dcc_drvdata *drvdata, char *buf, int curr_list) +{ + int ret; + int nval; + unsigned int addr, mask, val; + + nval = sscanf(buf, "%x %x %x", &addr, &mask, &val); + + if (nval <= 1 || nval > 3) + return -EINVAL; + + ret = dcc_config_add(drvdata, addr, 1, 0, curr_list); + if (ret) + return ret; + + ret = dcc_rd_mod_wr_add(drvdata, mask, val, curr_list); + return ret; + +} + +static int dcc_add_write(struct dcc_drvdata *drvdata, unsigned int addr, + unsigned int write_val, int apb_bus, int curr_list) +{ + struct dcc_config_entry *entry; + + entry = devm_kzalloc(drvdata->dev, sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + + entry->desc_type = DCC_WRITE_TYPE; + entry->base = addr & GENMASK(31, 4); + entry->offset = addr - entry->base; + entry->write_val = write_val; + entry->len = 1; + entry->apb_bus = apb_bus; + INIT_LIST_HEAD(&entry->list); + list_add_tail(&entry->list, &drvdata->cfg_head[curr_list]); + + return 0; +} + +static ssize_t dcc_config_add_write(struct dcc_drvdata *drvdata, char *buf, int curr_list) +{ + int ret, bus; + int nval; + unsigned int addr, write_val; + char apb_bus[4]; + + nval = sscanf(buf, "%x %x %s", &addr, &write_val, apb_bus); + + if (nval <= 1 || nval > 3) + return -EINVAL; + + if (nval == 3) { + if (!strcmp("apb", apb_bus)) + bus = 1; + else if (!strcmp("apb", apb_bus)) + bus = 0; + else + return -EINVAL; + } + + ret = dcc_add_write(drvdata, addr, write_val, bus, curr_list); + + return ret; +} + +static ssize_t config_read(struct file *filp, char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct dcc_drvdata *drvdata = filp->private_data; + struct dcc_config_entry *entry; + char local_buf[64], buf[100] = "\0"; + int len = 0, tot_len = 0, index = 0, curr_list; + + mutex_lock(&drvdata->mutex); + curr_list = dcc_filp_curr_list(filp); + + list_for_each_entry(entry, + &drvdata->cfg_head[curr_list], list) { + index++; + switch (entry->desc_type) { + case DCC_READ_WRITE_TYPE: + len = snprintf(local_buf, 64, + "Index: 0x%x, mask: 0x%x, val: 0x%x\n", + index, entry->mask, entry->write_val); + break; + case DCC_LOOP_TYPE: + len = snprintf(local_buf, 64, "Index: 0x%x, Loop: %d\n", + index, entry->loop_cnt); + break; + case DCC_WRITE_TYPE: + len = snprintf(local_buf, 64, + "Write Index: 0x%x, Base: 0x%x, Offset: 0x%x, len: 0x%x APB: %d\n", + index, entry->base, entry->offset, entry->len, + entry->apb_bus); + break; + case DCC_READ_TYPE: + len = snprintf(local_buf, 64, + "Read Index: 0x%x, Base: 0x%x, Offset: 0x%x, len: 0x%x APB: %d\n", + index, entry->base, entry->offset, + entry->len, entry->apb_bus); + } + tot_len += len; + strlcat(buf, local_buf, sizeof(local_buf)); + } + mutex_unlock(&drvdata->mutex); + return simple_read_from_buffer(userbuf, count, ppos, buf, tot_len); +} + +static ssize_t config_write(struct file *filp, + const char __user *user_buf, size_t count, + loff_t *ppos) +{ + int ret, curr_list; + char *token, buf[50]; + char *delim = " "; + struct dcc_drvdata *drvdata = filp->private_data; + + ret = copy_from_user(buf, user_buf, count); + if (ret) + return -EFAULT; + + curr_list = dcc_filp_curr_list(filp); + + if (buf[count - 1] == '\n') + buf[count - 1] = '\0'; + + token = strsep((char **)&buf, delim); + + if (!strcmp("R", token)) + ret = dcc_config_add_read(drvdata, buf, curr_list); + else if (!strcmp("W", token)) + ret = dcc_config_add_write(drvdata, buf, curr_list); + else if (!strcmp("RW", token)) + ret = dcc_config_add_read_write(drvdata, buf, curr_list); + else if (!strcmp("L", token)) + ret = dcc_config_add_loop(drvdata, buf, curr_list); + else { + dev_err(drvdata->dev, "%s is not a correct input\n", token); + return -EINVAL; + } + + if (ret) + return ret; + + return count; +} + +static const struct file_operations config_fops = { + .read = config_read, + .write = config_write, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +void dcc_delete_debug_dir(struct dcc_drvdata *dcc) +{ + debugfs_remove_recursive(dcc->dbg_dir); +}; + +int dcc_create_debug_dir(struct dcc_drvdata *dcc) +{ + int i; + char list_num[10]; + struct dentry *list; + struct device *dev = dcc->dev; + + if (debugfs_initialized()) { + dcc_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (!dcc_dbg) { + pr_err("can't create debugfs dir\n"); + return -1; + } + } + + dcc->dbg_dir = debugfs_create_dir(dev_name(dev), dcc_dbg); + if (!dcc->dbg_dir) + return -1; + for (i = 0; i <= dcc->nr_link_list; i++) { + sprintf(list_num, "%d", i); + list = debugfs_create_dir(list_num, dcc->dbg_dir); + debugfs_create_file("enable", 0600, list, dcc, &enable_fops); + debugfs_create_file("config", 0600, list, dcc, &config_fops); + } + + debugfs_create_file("trigger", 0200, dcc->dbg_dir, dcc, &trigger_fops); + debugfs_create_file("ready", 0400, dcc->dbg_dir, dcc, &ready_fops); + debugfs_create_file("config_reset", 0200, dcc->dbg_dir, + dcc, &config_reset_fops); + return 0; + +} + +static ssize_t dcc_sram_read(struct file *file, char __user *data, + size_t len, loff_t *ppos) +{ + unsigned char *buf; + struct dcc_drvdata *drvdata = container_of(file->private_data, + struct dcc_drvdata, + sram_dev); + + /* EOF check */ + if (drvdata->ram_size <= *ppos) + return 0; + + if ((*ppos + len) > drvdata->ram_size) + len = (drvdata->ram_size - *ppos); + + buf = kzalloc(len, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + memcpy_fromio(buf, drvdata->ram_base + *ppos, len); + + if (copy_to_user(data, buf, len)) { + kfree(buf); + return -EFAULT; + } + + *ppos += len; + + kfree(buf); + + return len; +} + +static const struct file_operations dcc_sram_fops = { + .owner = THIS_MODULE, + .read = dcc_sram_read, + .llseek = no_llseek, +}; + +static int dcc_sram_dev_init(struct dcc_drvdata *drvdata) +{ + int ret; + + drvdata->sram_dev.minor = MISC_DYNAMIC_MINOR; + drvdata->sram_dev.name = DCC_SRAM_NODE; + drvdata->sram_dev.fops = &dcc_sram_fops; + + ret = misc_register(&drvdata->sram_dev); + return ret; +} + +static void dcc_sram_dev_exit(struct dcc_drvdata *drvdata) +{ + misc_deregister(&drvdata->sram_dev); +} + +static int dcc_probe(struct platform_device *pdev) +{ + u32 val; + int ret = 0, i, size; + struct device *dev = &pdev->dev; + struct dcc_drvdata *dcc; + struct resource *res; + + dcc = devm_kzalloc(dev, sizeof(*dcc), GFP_KERNEL); + if (!dcc) + return -ENOMEM; + + dcc->dev = &pdev->dev; + platform_set_drvdata(pdev, dcc); + + dcc->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(dcc->base)) + return PTR_ERR(dcc->base); + + dcc->ram_base = devm_platform_get_and_ioremap_resource(pdev, 1, &res); + if (IS_ERR(dcc->ram_base)) + return PTR_ERR(dcc->ram_base); + + dcc->ram_size = resource_size(res); + + dcc->ram_offset = (size_t) of_device_get_match_data(&pdev->dev); + + val = dcc_readl(dcc, DCC_HW_INFO); + + if (FIELD_GET(DCC_VER_INFO_MASK, val)) { + dcc->mem_map_ver = 3; + dcc->nr_link_list = dcc_readl(dcc, DCC_LL_NUM_INFO); + if (dcc->nr_link_list == 0) + return -EINVAL; + } else if ((val & DCC_VER_MASK2) == DCC_VER_MASK2) { + dcc->mem_map_ver = 2; + dcc->nr_link_list = dcc_readl(dcc, DCC_LL_NUM_INFO); + if (dcc->nr_link_list == 0) + return -EINVAL; + } else { + dcc->mem_map_ver = 1; + dcc->nr_link_list = DCC_MAX_LINK_LIST; + } + + /* Either set the fixed loop offset or calculate it + * from ram_size.Max consecutive addresses the + * dcc can loop is equivalent to the ram size + */ + if (val & DCC_LOOP_OFFSET_MASK) + dcc->loopoff = DCC_FIX_LOOP_OFFSET; + else + dcc->loopoff = get_bitmask_order((dcc->ram_size + + dcc->ram_offset) / 4 - 1); + + mutex_init(&dcc->mutex); + /* Allocate space for all entries at once */ + size = sizeof(*dcc->enable) + sizeof(*dcc->cfg_head); + + dcc->enable = devm_kzalloc(dev, dcc->nr_link_list * size, GFP_KERNEL); + if (!dcc->enable) + return -ENOMEM; + + dcc->cfg_head = (struct list_head *)(dcc->enable + dcc->nr_link_list); + + for (i = 0; i < dcc->nr_link_list; i++) + INIT_LIST_HEAD(&dcc->cfg_head[i]); + + ret = dcc_sram_dev_init(dcc); + if (ret) { + dev_err(dcc->dev, "DCC: sram node not registered.\n"); + return ret; + } + + ret = dcc_create_debug_dir(dcc); + if (ret) { + dev_err(dcc->dev, "DCC: debugfs files not created.\n"); + return ret; + } + + return 0; +} + +static int dcc_remove(struct platform_device *pdev) +{ + struct dcc_drvdata *drvdata = platform_get_drvdata(pdev); + + dcc_delete_debug_dir(drvdata); + + dcc_sram_dev_exit(drvdata); + + dcc_config_reset(drvdata); + + return 0; +} + +static const struct of_device_id dcc_match_table[] = { + { .compatible = "qcom,sm8150-dcc", .data = (void *)0x5000 }, + { .compatible = "qcom,sc7280-dcc", .data = (void *)0x12000 }, + { .compatible = "qcom,sc7180-dcc", .data = (void *)0x6000 }, + { .compatible = "qcom,sdm845-dcc", .data = (void *)0x6000 }, + { } +}; +MODULE_DEVICE_TABLE(of, dcc_match_table); + +static struct platform_driver dcc_driver = { + .probe = dcc_probe, + .remove = dcc_remove, + .driver = { + .name = "qcom-dcc", + .of_match_table = dcc_match_table, + }, +}; + +module_platform_driver(dcc_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Qualcomm Technologies Inc. DCC driver"); + From patchwork Wed Sep 14 17:01:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 605816 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1297C6FA82 for ; Wed, 14 Sep 2022 17:02:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230085AbiINRCj (ORCPT ); Wed, 14 Sep 2022 13:02:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229948AbiINRCc (ORCPT ); Wed, 14 Sep 2022 13:02:32 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1367C5721D; Wed, 14 Sep 2022 10:02:30 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EGV9N5020437; Wed, 14 Sep 2022 17:02:21 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=ZbBNrxcBQwnBhSza745vP1mA930IbKsC4iuARxGi58o=; b=P4t+Ez/z9kgTtvAQP1+kK4p9mFlDzmntHxF8TyApu9lz2VYBiFCglu3GukXQ738uealZ V/6mx+gQzuYrqHSIhJbQLnBuEOwfiP7YjAcivfZ+R5RvIkLPhjnrCT3Xf1R7X4uaRY4y 9xkjczIUa1Cbo7c2/2Y65JSMWTkyp+/HqoTL7ibDeJQ7Q2OIOuTGoTJK+mxYWTEQZSzP eYWo5oHIkd3As/UkwSo8mqGIY6Dpyxq1S7yS5tBT8/DioLb58oMSYukLXY6YfF2EHw3h tK/UrpIdB7DF+UZrHRWZ0k/OWBgeTW2uqlAgJA0VUwEb55j7Tw4FuYBrNvYnc+xRIZgv CQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjy06jq0j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:21 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2Km0003236 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:20 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:16 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 3/7] MAINTAINERS: Add the entry for DCC(Data Capture and Compare) driver support Date: Wed, 14 Sep 2022 22:31:13 +0530 Message-ID: <35f0b2be3fd9744a4a978814118ae01427d05ca5.1663173478.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: njNBagAeeMDyw5lCBCMKmidUsvkNUK-s X-Proofpoint-ORIG-GUID: njNBagAeeMDyw5lCBCMKmidUsvkNUK-s X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 adultscore=0 spamscore=0 mlxlogscore=660 clxscore=1015 suspectscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Added the entries for all the files added as a part of driver support for DCC(Data Capture and Compare). Signed-off-by: Souradeep Chowdhury --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index a61f4f3..e57d927 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5146,6 +5146,14 @@ F: include/linux/tfrc.h F: include/uapi/linux/dccp.h F: net/dccp/ +DCC QTI DRIVER +M: Souradeep Chowdhury +L: linux-arm-msm@vger.kernel.org +S: Maintained +F: Documentation/ABI/testing/debugfs-driver-dcc +F: Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml +F: drivers/soc/qcom/dcc.c + DECnet NETWORK LAYER L: linux-decnet-user@lists.sourceforge.net S: Orphan From patchwork Wed Sep 14 17:01:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 606278 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CD1AECAAD3 for ; Wed, 14 Sep 2022 17:02:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230142AbiINRCm (ORCPT ); Wed, 14 Sep 2022 13:02:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230003AbiINRCd (ORCPT ); Wed, 14 Sep 2022 13:02:33 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C81058DE4; Wed, 14 Sep 2022 10:02:32 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EGUwGi003815; Wed, 14 Sep 2022 17:02:25 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=PHw4Cp4v6vdGRb45xOMKdB4yRLnTQi+nswvzXGS9g5w=; b=KsSSdBKSVC+yUNrOd+p4A8aTdUdUUFwc7UIumROUnsglTwGeco3D4bO0rRXiSmyP8zFo PtuOczGHtxjKqj6QZUkfXkYu70kqyoBLYkRVreFAxsEkHcqd2L/us37gfkF9O08KxwFO eae0gRV/4ekXZ+Gl5AGJ2qb0NVucvALF7ujJb90Se7peuZyxKg2L4kQuWz5VMWzA8dJw yNHn61k8lOUFJgKxtnwMcpBxe/k6eEWCPTobNBYz5Nz5VEHEkXZZjLFxjNnws8hP+MyM q40cTTOFmHmS4uICEB/+6hZCkoieHkiuNRzyA/3vH5bekhteFrhnHcG4UKIYsJgwXGqr YA== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjy0e33wj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:25 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2OTa000792 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:24 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:20 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 4/7] arm64: dts: qcom: sm8150: Add Data Capture and Compare(DCC) support node Date: Wed, 14 Sep 2022 22:31:14 +0530 Message-ID: <68bfce88fa5b4ec18a49a47695a90decf0b8763f.1663173478.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: bjWNygQU_viN7MyTUdzK0_1b-vnSTDTb X-Proofpoint-GUID: bjWNygQU_viN7MyTUdzK0_1b-vnSTDTb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=861 suspectscore=0 malwarescore=0 phishscore=0 clxscore=1015 priorityscore=1501 mlxscore=0 lowpriorityscore=0 impostorscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the DCC(Data Capture and Compare) device tree node entry along with the addresses for register regions. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sm8150.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi index d6d50b4..e0e1d3d 100644 --- a/arch/arm64/boot/dts/qcom/sm8150.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi @@ -1627,6 +1627,12 @@ interrupts = ; }; + dma@10a2000 { + compatible = "qcom,sm8150-dcc", "qcom,dcc"; + reg = <0x0 0x010a2000 0x0 0x1000>, + <0x0 0x010ad000 0x0 0x3000>; + }; + ufs_mem_hc: ufshc@1d84000 { compatible = "qcom,sm8150-ufshc", "qcom,ufshc", "jedec,ufs-2.0"; From patchwork Wed Sep 14 17:01:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 605814 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1BBFFC6FA8D for ; Wed, 14 Sep 2022 17:02:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230133AbiINRCu (ORCPT ); Wed, 14 Sep 2022 13:02:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42632 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230079AbiINRCj (ORCPT ); Wed, 14 Sep 2022 13:02:39 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88F3682742; Wed, 14 Sep 2022 10:02:35 -0700 (PDT) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EESrpZ029857; Wed, 14 Sep 2022 17:02:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=c3ANqKgNRqh+v7KfiBpG3Aa7EDx2TG6fg+l2RcsFBps=; b=SRQNcIybBr7nuV/y2UEIrSsaulmKwmLl6+Xw1JbUe2/mLKwcyUF3VXMQGMW1onHzJTDx BLBdvmi7egV3YDyy/nWqxSiQCM+CCbIJoJQsKp/sJFR5Z5jqFHANyDpSMU44JGsYn2lG WCB5A6fmCcZ+pn+qkE9NvNsa+e7+iUKz+w0nplUlO+juL71BTZ8/HlSTpSfnPWvxpbUI 5LP7acgmwH2jEj+HLjw6ZYjIpDMirScYN98kRS7PaT84s6Y3nyEVWJ4tIuQLJpimQXxx KDRuH9JH+7uVryYIsarF92P8KkfRBAD72nr9fC5/hrQzGWDvhxBX9eeG7qdgDtvEWcqt cw== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjy00bf40-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:29 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2SW2000854 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:28 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:24 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 5/7] arm64: dts: qcom: sc7280: Add Data Capture and Compare(DCC) support node Date: Wed, 14 Sep 2022 22:31:15 +0530 Message-ID: <6a760e9f35234e94ff86a999a93e8ca0b9fce0ac.1663173478.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: mbZd9CRVUUM6GnHZ5FyFTXWSuUgRaxia X-Proofpoint-ORIG-GUID: mbZd9CRVUUM6GnHZ5FyFTXWSuUgRaxia X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 spamscore=0 clxscore=1015 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=829 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the DCC(Data Capture and Compare) device tree node entry along with the address of the register region. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 53a21d0..54f1ec9 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -661,6 +661,12 @@ #power-domain-cells = <1>; }; + dma@117f000 { + compatible = "qcom,sc7280-dcc", "qcom,dcc"; + reg = <0x0 0x0117f000 0x0 0x1000>, + <0x0 0x01112000 0x0 0x6000>; + }; + stm@6002000 { compatible = "arm,coresight-stm", "arm,primecell"; reg = <0 0x06002000 0 0x1000>, From patchwork Wed Sep 14 17:01:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 606277 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F63EC6FA89 for ; Wed, 14 Sep 2022 17:02:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230127AbiINRCs (ORCPT ); Wed, 14 Sep 2022 13:02:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230132AbiINRCl (ORCPT ); Wed, 14 Sep 2022 13:02:41 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 982DD58B4E; Wed, 14 Sep 2022 10:02:39 -0700 (PDT) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EBTlAW026893; Wed, 14 Sep 2022 17:02:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=gUkffy8YdmHv4JqQTQk1nv6bVvOjhDHBLpFC5cP2Zhc=; b=Lxzb8kQ6PYL7EikO0b0nw1gopKQnjBi/VlPZ6v/ZISolLJ9EkH7hklVAsO3EbRQzjXmO WUdFAkynl8NqWrThrBNzLRZO1SASX+crNbbPymwtmN9jKJRC35gNfjO3XyNjODUisKSp Oq8yQzI1n+HR6DyCZjrHLyZEBfR6Mo+ND9UXdBgYNCEg64+tCdBIUaf964rUDlEIpTA0 v7emXdefCchvIOhCYKHvL0dVnbY8oVBa0E6UilMR+kp22tP4pC8Q+Zchk+I/w4mdQJhB UyCC0jLVybMUpP0O2ENJskj2RWIvnu3qCF26w/Sry1lwNp473A3xC4S9ISSovK1VbGSw TQ== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjxys3gcm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:33 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2WOA032065 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:32 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:28 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 6/7] arm64: dts: qcom: sc7180: Add Data Capture and Compare(DCC) support node Date: Wed, 14 Sep 2022 22:31:16 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 0tw0H0Ey29-hAmnR8jyjKh7rF69Iw2HW X-Proofpoint-GUID: 0tw0H0Ey29-hAmnR8jyjKh7rF69Iw2HW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 impostorscore=0 adultscore=0 mlxlogscore=829 spamscore=0 clxscore=1015 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the DCC(Data Capture and Compare) device tree node entry along with the address of the register region. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sc7180.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi index 47b20ba..6e7221d 100644 --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi @@ -2071,6 +2071,12 @@ #power-domain-cells = <1>; }; + dma@10a2000 { + compatible = "qcom,sc7180-dcc", "qcom,dcc"; + reg = <0x0 0x010a2000 0x0 0x1000>, + <0x0 0x010ae000 0x0 0x2000>; + }; + stm@6002000 { compatible = "arm,coresight-stm", "arm,primecell"; reg = <0 0x06002000 0 0x1000>, From patchwork Wed Sep 14 17:01:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 606276 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16277C6FA89 for ; Wed, 14 Sep 2022 17:03:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230204AbiINRDU (ORCPT ); Wed, 14 Sep 2022 13:03:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230104AbiINRCp (ORCPT ); Wed, 14 Sep 2022 13:02:45 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F0CD82751; Wed, 14 Sep 2022 10:02:44 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28EGV0gm005108; Wed, 14 Sep 2022 17:02:38 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=jgWfAwXuuu0RIdbapJx7yHndhKxVFwzMF8fPwOYRIh4=; b=jj9eq0TOV95lxsbBpmchO7xo4z9CGzzjl0A5lUbz5dTHSx/9Wk8E1VYsBEXt+MdjMNAH myV90CsKbx5dae0SPewyrSvwjxtS60aYhFRqH2Ydjf4bI0BdQAANK7+Jx2w1hcxA2DDN zZfc073dOI3dCv0oD338Wjb5/ji2cotOkIkzIPF+kEmUNHNcNdp9gSnptdMLPOatCQO7 YvLSWmAYrZJYKG205uPEzppGNHCoG+69PEfeesQaZzxUD4VtZx93+ibhGeTZ/6igbZKm g6kZdih9kNWeEdP4FMAn8ilc/3JY1R+oImFDvblJErUJgzxviRoOoPuGHcxymCeqx0Rq bA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjy0capce-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:37 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28EH2ae0008987 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Sep 2022 17:02:36 GMT Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 14 Sep 2022 10:02:32 -0700 From: Souradeep Chowdhury To: Andy Gross , Bjorn Andersson , Rob Herring , Alex Elder CC: , , , , "Sai Prakash Ranjan" , Sibi Sankar , Rajendra Nayak , , "Souradeep Chowdhury" Subject: [PATCH V9 7/7] arm64: dts: qcom: sdm845: Add Data Capture and Compare(DCC) support node Date: Wed, 14 Sep 2022 22:31:17 +0530 Message-ID: <1792d487657672fd183cceba575809cb5b3478e7.1663173478.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: EF4b2zq2q1968945kbGSpPqDOI3tOBLx X-Proofpoint-GUID: EF4b2zq2q1968945kbGSpPqDOI3tOBLx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-14_08,2022-09-14_04,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 mlxlogscore=833 priorityscore=1501 phishscore=0 mlxscore=0 bulkscore=0 adultscore=0 impostorscore=0 spamscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2208220000 definitions=main-2209140083 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the DCC(Data Capture and Compare) device tree node entry along with the address of the register region. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index ff6bda1..ee13b5f 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -1968,6 +1968,12 @@ interrupts = ; }; + dma@10a2000 { + compatible = "qcom,sdm845-dcc", "qcom,dcc"; + reg = <0x0 0x010a2000 0x0 0x1000>, + <0x0 0x010ae000 0x0 0x2000>; + }; + pcie0: pci@1c00000 { compatible = "qcom,pcie-sdm845", "snps,dw-pcie"; reg = <0 0x01c00000 0 0x2000>,