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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3d74bbbsm18164435ad.94.2025.12.19.02.04.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Dec 2025 02:05:00 -0800 (PST) From: Jie Gan Date: Fri, 19 Dec 2025 18:04:20 +0800 Subject: [PATCH v5 2/3] coresight: tpda: add logic to configure TPDA_SYNCR register Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251219-add_sysfs_nodes_to_configure_tpda-v5-2-ca93ddfe9d30@oss.qualcomm.com> References: <20251219-add_sysfs_nodes_to_configure_tpda-v5-0-ca93ddfe9d30@oss.qualcomm.com> In-Reply-To: <20251219-add_sysfs_nodes_to_configure_tpda-v5-0-ca93ddfe9d30@oss.qualcomm.com> To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Tingwei Zhang Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jie Gan , Tao Zhang X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1766138690; l=2243; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=tAQqLfVJjIgiBKBUDDikpS2noZr3Yoee6JpEOmQis8M=; b=TtCZVkK1yJHGZweOIKUHHueHMgsJN2lVMqhkPDZJcElX7ciJpi1wTnpG7eOVL3Dbo086L8Ov1 MNEq009IHhiBKaNbk4nlyQ3WaQfKvrLI3dG0wnRIUYDiL3GapHMcYK4 X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Authority-Analysis: v=2.4 cv=AcG83nXG c=1 sm=1 tr=0 ts=6945234e cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=KKAkSRfTAAAA:8 a=6Dbyrv6SX_ztr3m6kfUA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjE5MDA4MiBTYWx0ZWRfXx/bsb7A8B3YI iW2flTBlctQlc6mOdvVvSroABPCjr/xrtJ7owVNQ9JuR3tRpqu082PbX/s8q2tYmrmsilnGWFsv PndpknLRLMReYZpcLYLY15+BatjadSGCBCIQSIcqE7vJme0t0/Q3CbP5Xk6LtwkC/6ZeSYInws4 Autf7FMIDAsLBUIUfA2bNE+mqAc4JAlOj3yxBB6Hny57acseWt+4R2tJeQtQ7Ns7YiKM0ndqfGr 4rJHTiJgWTi/ElHoohDfQTGVjVM0PqPX9F03FxE7pYFvh40yZihSJBoDIMVfcuz2SAuTjoXohLf Iq4lcAxF4fCt3CQMk+h9i++bkNNvjdYdAd0jj1rBGj0qOnYdCKVQkpgWVXB/eXAAaaB4KHe0Mmz Wl8r/1ca2BrTquBE8KOF/th1RgMTsPeiDdrMVap4s5TD1TpYp0cUDDFUgJmnW2s0ADO97Rl71/B LHbCQIfOEpd0Gvbxg+Q== X-Proofpoint-GUID: HxRt8ulAdOcUKT5oQ-tcVe0ahmarEjFJ X-Proofpoint-ORIG-GUID: HxRt8ulAdOcUKT5oQ-tcVe0ahmarEjFJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-19_03,2025-12-17_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 adultscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512190082 From: Tao Zhang The TPDA_SYNC counter tracks the number of bytes transferred from the aggregator. When this count reaches the value programmed in the TPDA_SYNCR register, an ASYNC request is triggered, allowing userspace tools to accurately parse each valid packet. Signed-off-by: Tao Zhang Reviewed-by: James Clark Co-developed-by: Jie Gan Signed-off-by: Jie Gan --- drivers/hwtracing/coresight/coresight-tpda.c | 7 +++++++ drivers/hwtracing/coresight/coresight-tpda.h | 5 +++++ 2 files changed, 12 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtraci= ng/coresight/coresight-tpda.c index d25a8bcfb3d4..d378ff8ad77d 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -163,6 +163,13 @@ static void tpda_enable_pre_port(struct tpda_drvdata *= drvdata) */ if (drvdata->trig_flag_ts) writel_relaxed(0x0, drvdata->base + TPDA_FPID_CR); + + val =3D readl_relaxed(drvdata->base + TPDA_SYNCR); + /* Reset the mode ctrl */ + val &=3D ~TPDA_SYNCR_MODE_CTRL; + /* Program the counter value for TPDA_SYNCR */ + val |=3D TPDA_SYNCR_COUNTER_MASK; + writel_relaxed(val, drvdata->base + TPDA_SYNCR); } =20 static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtraci= ng/coresight/coresight-tpda.h index 8a075cfbc3cc..97e2729c15c9 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.h +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -9,6 +9,7 @@ #define TPDA_CR (0x000) #define TPDA_Pn_CR(n) (0x004 + (n * 4)) #define TPDA_FPID_CR (0x084) +#define TPDA_SYNCR (0x08C) =20 /* Cross trigger Global (all ports) flush request bit */ #define TPDA_CR_FLREQ BIT(0) @@ -38,6 +39,10 @@ #define TPDA_Pn_CR_CMBSIZE GENMASK(7, 6) /* Aggregator port DSB data set element size bit */ #define TPDA_Pn_CR_DSBSIZE BIT(8) +/* TPDA_SYNCR mode control bit */ +#define TPDA_SYNCR_MODE_CTRL BIT(12) +/* TPDA_SYNCR counter mask */ +#define TPDA_SYNCR_COUNTER_MASK GENMASK(11, 0) =20 #define TPDA_MAX_INPORTS 32 =20 --=20 2.34.1