From: Tao Zhang <quic_taozha@quicinc.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Konrad Dybcio <konradybcio@gmail.com>,
Mike Leach <mike.leach@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Jinlong Mao <quic_jinlmao@quicinc.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<coresight@lists.linaro.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
Tingwei Zhang <quic_tingweiz@quicinc.com>,
Yuanfang Zhang <quic_yuanfang@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Hao Zhang <quic_hazha@quicinc.com>,
<linux-arm-msm@vger.kernel.org>, <andersson@kernel.org>
Subject: Re: [PATCH v4 03/11] coresight-tpdm: Initialize DSB subunit configuration
Date: Fri, 26 May 2023 11:46:20 +0800 [thread overview]
Message-ID: <1e75872c-f80f-0d29-3be0-25dc19452cc5@quicinc.com> (raw)
In-Reply-To: <320ee3b4-63ed-ec50-03c6-906803e34571@arm.com>
On 5/25/2023 5:09 PM, Suzuki K Poulose wrote:
> On 25/05/2023 09:12, Tao Zhang wrote:
>>
>> On 5/23/2023 9:42 PM, Suzuki K Poulose wrote:
>>> On 27/04/2023 10:00, Tao Zhang wrote:
>>>> DSB is used for monitoring “events”. Events are something that
>>>> occurs at some point in time. It could be a state decode, the
>>>> act of writing/reading a particular address, a FIFO being empty,
>>>> etc. This decoding of the event desired is done outside TPDM.
>>>> DSB subunit need to be configured in enablement and disablement.
>>>> A struct that specifics associated to dsb dataset is needed. It
>>>> saves the configuration and parameters of the dsb datasets. This
>>>> change is to add this struct and initialize the configuration of
>>>> DSB subunit.
>>>>
>>>> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
>
> ...
>
>>>> + * dataset types. It covers Basic Counts(BC), Tenure Counts(TC),
>>>> + * Continuous Multi-Bit(CMB), Multi-lane CMB(MCMB) and Discrete
>>>> Single
>>>> + * Bit(DSB). This function will initialize the configuration
>>>> according
>>>> + * to the dataset type supported by the TPDM.
>>>> + */
>>>> static void __tpdm_enable(struct tpdm_drvdata *drvdata)
>>>> {
>>>> CS_UNLOCK(drvdata->base);
>>>> @@ -110,15 +144,24 @@ static const struct coresight_ops tpdm_cs_ops
>>>> = {
>>>> .source_ops = &tpdm_source_ops,
>>>> };
>>>> -static void tpdm_init_default_data(struct tpdm_drvdata *drvdata)
>>>> +static int tpdm_datasets_setup(struct tpdm_drvdata *drvdata)
>>>> {
>>>> u32 pidr;
>>>> - CS_UNLOCK(drvdata->base);
>>>> /* Get the datasets present on the TPDM. */
>>>> pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0);
>>>> drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0);
>>>> - CS_LOCK(drvdata->base);
>>>
>>> Why are we removing the CS_{UN,}LOCK here ?
>>
>> CS_UNLOCK is used before writing data to Coresight registers. Here
>> this function
>>
>> doesn't need to write data to any registers, so I remove the
>> CS_{UN,}LOCK here.
>
> Please make this a separate patch to avoid confusing and keep it at the
> beginning of the series.
Sure, I will update this in the next patch series.
>
> Suzuki
>
> _______________________________________________
> CoreSight mailing list -- coresight@lists.linaro.org
> To unsubscribe send an email to coresight-leave@lists.linaro.org
next prev parent reply other threads:[~2023-05-26 3:46 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-27 9:00 [PATCH v4 00/11] Add support to configure TPDM DSB subunit Tao Zhang
2023-04-27 9:00 ` [PATCH v4 01/11] dt-bindings: arm: Add support for DSB element size Tao Zhang
2023-04-27 12:59 ` Rob Herring
2023-04-27 9:00 ` [PATCH v4 02/11] coresight-tpda: Add DSB dataset support Tao Zhang
2023-05-23 10:07 ` Suzuki K Poulose
2023-05-23 14:48 ` Suzuki K Poulose
2023-05-25 7:20 ` Tao Zhang
2023-05-25 7:16 ` Tao Zhang
2023-05-25 9:08 ` Suzuki K Poulose
2023-05-26 3:22 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 03/11] coresight-tpdm: Initialize DSB subunit configuration Tao Zhang
2023-05-23 13:42 ` Suzuki K Poulose
2023-05-25 8:12 ` Tao Zhang
2023-05-25 9:09 ` Suzuki K Poulose
2023-05-26 3:46 ` Tao Zhang [this message]
2023-04-27 9:00 ` [PATCH v4 04/11] coresight-tpdm: Add reset node to TPDM node Tao Zhang
2023-05-23 14:53 ` Suzuki K Poulose
2023-05-25 8:36 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 05/11] coresight-tpdm: Add nodes to set trigger timestamp and type Tao Zhang
2023-06-01 9:05 ` Suzuki K Poulose
2023-06-02 2:29 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 06/11] coresight-tpdm: Add node to set dsb programming mode Tao Zhang
2023-06-01 9:23 ` Suzuki K Poulose
2023-06-02 2:58 ` Tao Zhang
2023-06-02 8:25 ` Suzuki K Poulose
2023-06-02 8:31 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 07/11] coresight-tpdm: Add nodes for dsb edge control Tao Zhang
2023-06-01 12:14 ` Suzuki K Poulose
2023-06-02 8:21 ` Tao Zhang
2023-06-02 8:45 ` Suzuki K Poulose
2023-06-02 9:00 ` Suzuki K Poulose
2023-06-05 9:12 ` Tao Zhang
2023-06-02 14:38 ` Tao Zhang
2023-06-02 16:05 ` Suzuki K Poulose
2023-04-27 9:00 ` [PATCH v4 08/11] coresight-tpdm: Add nodes to configure pattern match output Tao Zhang
2023-06-01 13:28 ` Suzuki K Poulose
2023-06-02 8:29 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 09/11] coresight-tpdm: Add nodes for timestamp request Tao Zhang
2023-06-05 10:19 ` Suzuki K Poulose
2023-06-06 10:55 ` Tao Zhang
2023-04-27 9:00 ` [PATCH v4 10/11] dt-bindings: arm: Add support for DSB MSR register Tao Zhang
2023-04-27 9:00 ` [PATCH v4 11/11] coresight-tpdm: Add nodes for dsb msr support Tao Zhang
2023-06-05 10:24 ` Suzuki K Poulose
2023-06-06 12:45 ` Tao Zhang
2023-04-27 16:53 ` [PATCH v4 00/11] Add support to configure TPDM DSB subunit Suzuki K Poulose
[not found] ` <725b6ccd-ff70-a3d2-fe44-797c0509e643@quicinc.com>
2023-06-01 8:17 ` Tao Zhang
2023-06-01 8:36 ` Suzuki K Poulose
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