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Thu, 29 May 2025 08:20:22 GMT Received: from ap-cloud-sh02-lnx.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 29 May 2025 01:20:18 -0700 From: Songwei Chai To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , CC: , , , , Subject: [PATCH v5 5/7] coresight-tgu: add support to configure next action Date: Thu, 29 May 2025 16:19:46 +0800 Message-ID: <20250529081949.26493-6-quic_songchai@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250529081949.26493-1-quic_songchai@quicinc.com> References: <20250529081949.26493-1-quic_songchai@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: RRQTHvBqb3zEn-anr6V9YNLMyTBTA5f9 X-Proofpoint-ORIG-GUID: RRQTHvBqb3zEn-anr6V9YNLMyTBTA5f9 X-Authority-Analysis: v=2.4 cv=X8FSKHTe c=1 sm=1 tr=0 ts=683818c7 cx=c_pps a=JYp8KDb2vCoCEuGobkYCKw==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=GEpy-HfZoHoA:10 a=dt9VzEwgFbYA:10 a=COk6AnOGAAAA:8 a=p2n3lCMJEvriUG1kbLsA:9 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTI5MDA4MCBTYWx0ZWRfX5R10MEkJf4CA 2CT5jkq2KhKWE10ozTO3f7IYsIsYnuNiJkydSzE1THhguj6uxCs1OD4aiycPWmRv4GIDOBWJoMv HQeRJh6lNeKDE7C02K4/YKGGyehtszD5Sbx325v5QYb61sLbSguuJ6+lehy/gR1NlU4Y69GVd5y TAs/a3ih6YgVuRhoAWy0kN9y8YxJ3+C1oaubY+fanMOMtwqXUEffZZOdI17sGcLxsnzB2jyGYPP 81bJk3lAX5xIAr0/En9mCCGXEiAUbgycBFtpTMoSGlFY04nP99MpRxONd+naOR4EWOrWQiT4aeN q5WLQPDqK61duX3UrF489iKrNY1bdWyzR2LHKIcqTOqwH+oHBDNbPrCZ2eUCU0DeJLe0MJWjTk6 OM4xDxUXhH1RwacNJ6pkArNdD51qObrYhrgnPOorym8XVqUznyxUCjPeOUqJjUGJgC4mmXo3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-29_04,2025-05-29_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 bulkscore=0 mlxlogscore=999 mlxscore=0 clxscore=1015 priorityscore=1501 spamscore=0 adultscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505290080 Add "select" node for each step to determine if another step is taken, trigger(s) are generated, counters/timers incremented/decremented, etc. Signed-off-by: Songwei Chai --- .../testing/sysfs-bus-coresight-devices-tgu | 7 +++ drivers/hwtracing/coresight/coresight-tgu.c | 59 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tgu.h | 30 +++++++++- 3 files changed, 94 insertions(+), 2 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu index a98ceb5bfdd1..374982f0e76a 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu @@ -21,3 +21,10 @@ KernelVersion 6.16 Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) Description: (RW) Set/Get the decode mode with specific step for TGU. + +What: /sys/bus/coresight/devices//step[0:7]_condition_select/reg[0:3] +Date: May 2025 +KernelVersion 6.16 +Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) +Description: + (RW) Set/Get the next action with specific step for TGU. diff --git a/drivers/hwtracing/coresight/coresight-tgu.c b/drivers/hwtracing/coresight/coresight-tgu.c index 8dbe8ab30174..41f648b9e0ee 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.c +++ b/drivers/hwtracing/coresight/coresight-tgu.c @@ -36,6 +36,9 @@ static int calculate_array_location(struct tgu_drvdata *drvdata, ret = step_index * (drvdata->max_condition_decode) + reg_index; break; + case TGU_CONDITION_SELECT: + ret = step_index * (drvdata->max_condition_select) + reg_index; + break; default: break; } @@ -81,6 +84,12 @@ static ssize_t tgu_dataset_show(struct device *dev, drvdata, tgu_attr->step_index, tgu_attr->operation_index, tgu_attr->reg_num)]); + case TGU_CONDITION_SELECT: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->condition_select[calculate_array_location( + drvdata, tgu_attr->step_index, + tgu_attr->operation_index, + tgu_attr->reg_num)]); default: break; } @@ -127,6 +136,13 @@ static ssize_t tgu_dataset_store(struct device *dev, tgu_attr->reg_num)] = val; ret = size; break; + case TGU_CONDITION_SELECT: + tgu_drvdata->value_table->condition_select[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, + tgu_attr->operation_index, + tgu_attr->reg_num)] = val; + ret = size; + break; default: break; } @@ -162,6 +178,16 @@ static umode_t tgu_node_visible(struct kobject *kobject, attr->mode : 0; break; + case TGU_CONDITION_SELECT: + /* 'default' register is at the end of 'select' region */ + if (tgu_attr->reg_num == + drvdata->max_condition_select - 1) + attr->name = "default"; + ret = (tgu_attr->reg_num < + drvdata->max_condition_select) ? + attr->mode : + 0; + break; default: break; } @@ -206,6 +232,20 @@ static ssize_t tgu_write_all_hw_regs(struct tgu_drvdata *drvdata) CONDITION_DECODE_STEP(i, j)); } } + + for (i = 0; i < drvdata->max_step; i++) { + for (j = 0; j < drvdata->max_condition_select; j++) { + ret = check_array_location(drvdata, i, TGU_CONDITION_SELECT, j); + if (ret == -EINVAL) + goto exit; + + tgu_writel(drvdata, + drvdata->value_table->condition_select + [calculate_array_location(drvdata, i, + TGU_CONDITION_SELECT, j)], + CONDITION_SELECT_STEP(i, j)); + } + } /* Enable TGU to program the triggers */ tgu_writel(drvdata, 1, TGU_CONTROL); exit: @@ -250,6 +290,8 @@ static void tgu_set_conditions(struct tgu_drvdata *drvdata) num_conditions = TGU_DEVID_CONDITIONS(devid); drvdata->max_condition_decode = num_conditions; + /* select region has an additional 'default' register */ + drvdata->max_condition_select = num_conditions + 1; } static int tgu_enable(struct coresight_device *csdev, enum cs_mode mode, @@ -397,6 +439,14 @@ static const struct attribute_group *tgu_attr_groups[] = { CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(5), CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(6), CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(7), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(0), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(1), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(2), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(3), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(4), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(5), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(6), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(7), NULL, }; @@ -458,6 +508,15 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) if (!drvdata->value_table->condition_decode) return -ENOMEM; + drvdata->value_table->condition_select = devm_kzalloc( + dev, + drvdata->max_condition_select * drvdata->max_step * + sizeof(*(drvdata->value_table->condition_select)), + GFP_KERNEL); + + if (!drvdata->value_table->condition_select) + return -ENOMEM; + drvdata->enable = false; desc.type = CORESIGHT_DEV_TYPE_HELPER; desc.pdata = adev->dev.platform_data; diff --git a/drivers/hwtracing/coresight/coresight-tgu.h b/drivers/hwtracing/coresight/coresight-tgu.h index 691da393ffa3..214ee67d1947 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.h +++ b/drivers/hwtracing/coresight/coresight-tgu.h @@ -50,6 +50,7 @@ #define STEP_OFFSET 0x1D8 #define PRIORITY_START_OFFSET 0x0074 #define CONDITION_DECODE_OFFSET 0x0050 +#define CONDITION_SELECT_OFFSET 0x0060 #define PRIORITY_OFFSET 0x60 #define REG_OFFSET 0x4 @@ -61,6 +62,9 @@ #define CONDITION_DECODE_STEP(step, decode) \ (CONDITION_DECODE_OFFSET + REG_OFFSET * decode + STEP_OFFSET * step) +#define CONDITION_SELECT_STEP(step, select) \ + (CONDITION_SELECT_OFFSET + REG_OFFSET * select + STEP_OFFSET * step) + #define tgu_dataset_rw(name, step_index, type, reg_num) \ (&((struct tgu_attribute[]){ { \ __ATTR(name, 0644, tgu_dataset_show, tgu_dataset_store), \ @@ -76,6 +80,9 @@ #define STEP_DECODE(step_index, reg_num) \ tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_DECODE, reg_num) +#define STEP_SELECT(step_index, reg_num) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_SELECT, reg_num) + #define STEP_PRIORITY_LIST(step_index, priority) \ {STEP_PRIORITY(step_index, 0, priority), \ STEP_PRIORITY(step_index, 1, priority), \ @@ -106,6 +113,15 @@ NULL \ } +#define STEP_SELECT_LIST(n) \ + {STEP_SELECT(n, 0), \ + STEP_SELECT(n, 1), \ + STEP_SELECT(n, 2), \ + STEP_SELECT(n, 3), \ + STEP_SELECT(n, 4), \ + NULL \ + } + #define PRIORITY_ATTRIBUTE_GROUP_INIT(step, priority)\ (&(const struct attribute_group){\ .attrs = (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ @@ -120,13 +136,20 @@ .name = "step" #step "_condition_decode" \ }) +#define CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(step)\ + (&(const struct attribute_group){\ + .attrs = (struct attribute*[])STEP_SELECT_LIST(step),\ + .is_visible = tgu_node_visible,\ + .name = "step" #step "_condition_select" \ + }) + enum operation_index { TGU_PRIORITY0, TGU_PRIORITY1, TGU_PRIORITY2, TGU_PRIORITY3, - TGU_CONDITION_DECODE - + TGU_CONDITION_DECODE, + TGU_CONDITION_SELECT }; /* Maximum priority that TGU supports */ @@ -142,6 +165,7 @@ struct tgu_attribute { struct value_table { unsigned int *priority; unsigned int *condition_decode; + unsigned int *condition_select; }; /** @@ -155,6 +179,7 @@ struct value_table { * @max_reg: Maximum number of registers * @max_step: Maximum step size * @max_condition_decode: Maximum number of condition_decode + * @max_condition_select: Maximum number of condition_select * * This structure defines the data associated with a TGU device, * including its base address, device pointers, clock, spinlock for @@ -171,6 +196,7 @@ struct tgu_drvdata { int max_reg; int max_step; int max_condition_decode; + int max_condition_select; }; #endif