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Fri, 19 Jan 2024 03:24:02 GMT Received: from taozha-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 18 Jan 2024 19:23:57 -0800 From: Tao Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio , Mike Leach , Rob Herring , Krzysztof Kozlowski CC: Tao Zhang , Jinlong Mao , Leo Yan , Greg Kroah-Hartman , , , , , Tingwei Zhang , Yuanfang Zhang , Trilok Soni , Song Chai , , Subject: [PATCH v4 07/10] coresight-tpdm: Add pattern registers support for CMB Date: Fri, 19 Jan 2024 11:23:00 +0800 Message-ID: <1705634583-17631-8-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705634583-17631-1-git-send-email-quic_taozha@quicinc.com> References: <1705634583-17631-1-git-send-email-quic_taozha@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: pdva50fm3M3qvqnzH9_mbg8CzFchirIg X-Proofpoint-ORIG-GUID: pdva50fm3M3qvqnzH9_mbg8CzFchirIg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-18_12,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 mlxlogscore=999 phishscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 spamscore=0 malwarescore=0 suspectscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190012 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1788487698975832965 X-GMAIL-MSGID: 1788487698975832965 Timestamps are requested if the monitor’s CMB data set unit input data matches the value in the Monitor CMB timestamp pattern and mask registers (M_CMB_TPR and M_CMB_TPMR) when CMB timestamp enabled via the timestamp insertion enable register bit(CMB_TIER.PATT_TSENAB). The pattern match trigger output is achieved via setting values into the CMB trigger pattern and mask registers (CMB_XPR and CMB_XPMR). After configuring a pattern through these registers, the TPDM subunit will assert an output trigger every time it receives new input data that matches the configured pattern value. Values in a given bit number of the mask register correspond to the same bit number in the corresponding pattern register. Signed-off-by: Tao Zhang --- .../testing/sysfs-bus-coresight-devices-tpdm | 30 ++++++ drivers/hwtracing/coresight/coresight-tpdm.c | 98 ++++++++++++++++++- drivers/hwtracing/coresight/coresight-tpdm.h | 39 ++++++++ 3 files changed, 166 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm index 3ae21ccf3f29..898aee81e20d 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm @@ -184,3 +184,33 @@ Description: (Write) Set the data collection mode of CMB tpdm. Continuous Accepts only one of the 2 values - 0 or 1. 0 : Continuous CMB collection mode. 1 : Trace-on-change CMB collection mode. + +What: /sys/bus/coresight/devices//cmb_trig_patt/xpr[0:1] +Date: March 2023 +KernelVersion 6.7 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (RW) Set/Get the value of the trigger pattern for the CMB + subunit TPDM. + +What: /sys/bus/coresight/devices//cmb_trig_patt/xpmr[0:1] +Date: March 2023 +KernelVersion 6.7 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (RW) Set/Get the mask of the trigger pattern for the CMB + subunit TPDM. + +What: /sys/bus/coresight/devices//dsb_patt/tpr[0:1] +Date: March 2023 +KernelVersion 6.7 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (RW) Set/Get the value of the pattern for the CMB subunit TPDM. + +What: /sys/bus/coresight/devices//dsb_patt/tpmr[0:1] +Date: March 2023 +KernelVersion 6.7 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (RW) Set/Get the mask of the pattern for the CMB subunit TPDM. diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index b55aee65a856..079c875ad667 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -66,6 +66,26 @@ static ssize_t tpdm_simple_dataset_show(struct device *dev, return -EINVAL; return sysfs_emit(buf, "0x%x\n", drvdata->dsb->msr[tpdm_attr->idx]); + case CMB_TRIG_PATT: + if (tpdm_attr->idx >= TPDM_CMB_MAX_PATT) + return -EINVAL; + return sysfs_emit(buf, "0x%x\n", + drvdata->cmb->trig_patt[tpdm_attr->idx]); + case CMB_TRIG_PATT_MASK: + if (tpdm_attr->idx >= TPDM_CMB_MAX_PATT) + return -EINVAL; + return sysfs_emit(buf, "0x%x\n", + drvdata->cmb->trig_patt_mask[tpdm_attr->idx]); + case CMB_PATT: + if (tpdm_attr->idx >= TPDM_CMB_MAX_PATT) + return -EINVAL; + return sysfs_emit(buf, "0x%x\n", + drvdata->cmb->patt_val[tpdm_attr->idx]); + case CMB_PATT_MASK: + if (tpdm_attr->idx >= TPDM_CMB_MAX_PATT) + return -EINVAL; + return sysfs_emit(buf, "0x%x\n", + drvdata->cmb->patt_mask[tpdm_attr->idx]); } return -EINVAL; } @@ -118,6 +138,30 @@ static ssize_t tpdm_simple_dataset_store(struct device *dev, ret = size; } break; + case CMB_TRIG_PATT: + if (tpdm_attr->idx < TPDM_CMB_MAX_PATT) { + drvdata->cmb->trig_patt[tpdm_attr->idx] = val; + ret = size; + } + break; + case CMB_TRIG_PATT_MASK: + if (tpdm_attr->idx < TPDM_CMB_MAX_PATT) { + drvdata->cmb->trig_patt_mask[tpdm_attr->idx] = val; + ret = size; + } + break; + case CMB_PATT: + if (tpdm_attr->idx < TPDM_CMB_MAX_PATT) { + drvdata->cmb->patt_val[tpdm_attr->idx] = val; + ret = size; + } + break; + case CMB_PATT_MASK: + if (tpdm_attr->idx < TPDM_CMB_MAX_PATT) { + drvdata->cmb->patt_mask[tpdm_attr->idx] = val; + ret = size; + } + break; default: break; } @@ -279,10 +323,32 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) static void tpdm_enable_cmb(struct tpdm_drvdata *drvdata) { - u32 val; + u32 val, i; if (tpdm_has_cmb_dataset(drvdata)) { + /* Configure pattern registers */ + for (i = 0; i < TPDM_CMB_MAX_PATT; i++) { + writel_relaxed(drvdata->cmb->patt_val[i], + drvdata->base + TPDM_CMB_TPR(i)); + writel_relaxed(drvdata->cmb->patt_mask[i], + drvdata->base + TPDM_CMB_TPMR(i)); + writel_relaxed(drvdata->cmb->trig_patt[i], + drvdata->base + TPDM_CMB_XPR(i)); + writel_relaxed(drvdata->cmb->trig_patt_mask[i], + drvdata->base + TPDM_CMB_XPMR(i)); + } + val = readl_relaxed(drvdata->base + TPDM_CMB_CR); + /* + * Set to 0 for continuous CMB collection mode, + * 1 for trace-on-change CMB collection mode. + */ + if (drvdata->cmb->trace_mode) + val |= TPDM_CMB_CR_MODE; + else + val &= ~TPDM_CMB_CR_MODE; + + /* Set the enable bit of CMB control register to 1 */ val |= TPDM_CMB_CR_ENA; /* Set the enable bit of CMB control register to 1 */ @@ -886,6 +952,22 @@ static struct attribute *tpdm_dsb_msr_attrs[] = { NULL, }; +static struct attribute *tpdm_cmb_trig_patt_attrs[] = { + CMB_TRIG_PATT_ATTR(0), + CMB_TRIG_PATT_ATTR(1), + CMB_TRIG_PATT_MASK_ATTR(0), + CMB_TRIG_PATT_MASK_ATTR(1), + NULL, +}; + +static struct attribute *tpdm_cmb_patt_attrs[] = { + CMB_PATT_ATTR(0), + CMB_PATT_ATTR(1), + CMB_PATT_MASK_ATTR(0), + CMB_PATT_MASK_ATTR(1), + NULL, +}; + static struct attribute *tpdm_dsb_attrs[] = { &dev_attr_dsb_mode.attr, &dev_attr_dsb_trig_ts.attr, @@ -932,6 +1014,18 @@ static struct attribute_group tpdm_cmb_attr_grp = { .is_visible = tpdm_cmb_is_visible, }; +static struct attribute_group tpdm_cmb_trig_patt_grp = { + .attrs = tpdm_cmb_trig_patt_attrs, + .is_visible = tpdm_cmb_is_visible, + .name = "cmb_trig_patt", +}; + +static struct attribute_group tpdm_cmb_patt_grp = { + .attrs = tpdm_cmb_patt_attrs, + .is_visible = tpdm_cmb_is_visible, + .name = "cmb_patt", +}; + static const struct attribute_group *tpdm_attr_grps[] = { &tpdm_attr_grp, &tpdm_dsb_attr_grp, @@ -940,6 +1034,8 @@ static const struct attribute_group *tpdm_attr_grps[] = { &tpdm_dsb_patt_grp, &tpdm_dsb_msr_grp, &tpdm_cmb_attr_grp, + &tpdm_cmb_trig_patt_grp, + &tpdm_cmb_patt_grp, NULL, }; diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index 2af92c270ed1..8cb8a9b35384 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -11,12 +11,23 @@ /* CMB Subunit Registers */ #define TPDM_CMB_CR (0xA00) +/*CMB subunit timestamp pattern registers*/ +#define TPDM_CMB_TPR(n) (0xA08 + (n * 4)) +/*CMB subunit timestamp pattern mask registers*/ +#define TPDM_CMB_TPMR(n) (0xA10 + (n * 4)) +/*CMB subunit trigger pattern registers*/ +#define TPDM_CMB_XPR(n) (0xA18 + (n * 4)) +/*CMB subunit trigger pattern mask registers*/ +#define TPDM_CMB_XPMR(n) (0xA20 + (n * 4)) /* Enable bit for CMB subunit */ #define TPDM_CMB_CR_ENA BIT(0) /* Trace collection mode for CMB subunit */ #define TPDM_CMB_CR_MODE BIT(1) +/*Patten register number*/ +#define TPDM_CMB_MAX_PATT 2 + /* DSB Subunit Registers */ #define TPDM_DSB_CR (0x780) #define TPDM_DSB_TIER (0x784) @@ -151,6 +162,22 @@ tpdm_simple_dataset_rw(msr##nr, \ DSB_MSR, nr) +#define CMB_TRIG_PATT_ATTR(nr) \ + tpdm_simple_dataset_rw(xpr##nr, \ + CMB_TRIG_PATT, nr) + +#define CMB_TRIG_PATT_MASK_ATTR(nr) \ + tpdm_simple_dataset_rw(xpmr##nr, \ + CMB_TRIG_PATT_MASK, nr) + +#define CMB_PATT_ATTR(nr) \ + tpdm_simple_dataset_rw(tpr##nr, \ + CMB_PATT, nr) + +#define CMB_PATT_MASK_ATTR(nr) \ + tpdm_simple_dataset_rw(tpmr##nr, \ + CMB_PATT_MASK, nr) + /** * struct dsb_dataset - specifics associated to dsb dataset * @mode: DSB programming mode @@ -186,9 +213,17 @@ struct dsb_dataset { /** * struct cmb_dataset * @trace_mode: Dataset collection mode + * @patt_val: Save value for pattern + * @patt_mask: Save value for pattern mask + * @trig_patt: Save value for trigger pattern + * @trig_patt_mask: Save value for trigger pattern mask */ struct cmb_dataset { u32 trace_mode; + u32 patt_val[TPDM_CMB_MAX_PATT]; + u32 patt_mask[TPDM_CMB_MAX_PATT]; + u32 trig_patt[TPDM_CMB_MAX_PATT]; + u32 trig_patt_mask[TPDM_CMB_MAX_PATT]; }; /** @@ -225,6 +260,10 @@ enum dataset_mem { DSB_PATT, DSB_PATT_MASK, DSB_MSR, + CMB_TRIG_PATT, + CMB_TRIG_PATT_MASK, + CMB_PATT, + CMB_PATT_MASK }; /**