| Message ID | 1690269353-10829-8-git-send-email-quic_taozha@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add support to configure TPDM DSB subunit | expand |
On 25/07/2023 08:15, Tao Zhang wrote: > The nodes are needed to set or show the trigger timestamp and > trigger type. This change is to add these nodes to achieve these > function. > > Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> > --- > .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 24 ++++++ > drivers/hwtracing/coresight/coresight-tpdm.c | 94 ++++++++++++++++++++++ > 2 files changed, 118 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > index dbc2fbd0..0b7b4ad 100644 > --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > @@ -21,3 +21,27 @@ Description: > > Accepts only one value - 1. > 1 : Reset the dataset of the tpdm > + > +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_type > +Date: March 2023 > +KernelVersion 6.5 > +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> > +Description: > + (Write) Set the trigger type of DSB tpdm. Read the trigger > + type of DSB tpdm. Please use: (RW) instead of (Write). (RW) Set/Get the trigger type of the DSB for TPDM. Similarly for the items below. > + > + Accepts only one of the 2 values - 0 or 1. > + 0 : Set the DSB trigger type to false > + 1 : Set the DSB trigger type to true > + > +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_ts > +Date: March 2023 > +KernelVersion 6.5 > +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> > +Description: > + (Write) Set the trigger timestamp of DSB tpdm. Read the > + trigger timestamp of DSB tpdm. > + > + Accepts only one of the 2 values - 0 or 1. > + 0 : Set the DSB trigger type to false > + 1 : Set the DSB trigger type to true > diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c > index acc3eea..62efc18 100644 > --- a/drivers/hwtracing/coresight/coresight-tpdm.c > +++ b/drivers/hwtracing/coresight/coresight-tpdm.c > @@ -20,6 +20,18 @@ > > DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm"); > > +static umode_t tpdm_dsb_is_visible(struct kobject *kobj, > + struct attribute *attr, int n) Please keep the alignment. > +{ > + struct device *dev = kobj_to_dev(kobj); > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + > + if (drvdata && (drvdata->datasets & TPDM_PIDR0_DS_DSB)) As suggested earlier, add a wrapper for the above check. > + return attr->mode; > + > + return 0; > +} > + > static void tpdm_reset_datasets(struct tpdm_drvdata *drvdata) > { > if (drvdata->datasets & TPDM_PIDR0_DS_DSB) { > @@ -229,8 +241,90 @@ static struct attribute_group tpdm_attr_grp = { > .attrs = tpdm_attrs, > }; > > +static ssize_t dsb_trig_type_show(struct device *dev, > + struct device_attribute *attr, char *buf) Please follow the above alignment for all functions throughout the series. There are unaligned parameter lists scattered around the series. > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + > + return sysfs_emit(buf, "%u\n", > + (unsigned int)drvdata->dsb->trig_type); > +} > + > +/* > + * Trigger type (boolean): > + * false - Disable trigger type. > + * true - Enable trigger type. > + */ > +static ssize_t dsb_trig_type_store(struct device *dev, > + struct device_attribute *attr, > + const char *buf, > + size_t size) > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + unsigned long val; > + > + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) > + return -EINVAL; > + > + spin_lock(&drvdata->spinlock); > + if (val) > + drvdata->dsb->trig_type = true; > + else > + drvdata->dsb->trig_type = false; > + spin_unlock(&drvdata->spinlock); > + return size; > +} > +static DEVICE_ATTR_RW(dsb_trig_type); > + > +static ssize_t dsb_trig_ts_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + > + return sysfs_emit(buf, "%u\n", > + (unsigned int)drvdata->dsb->trig_ts); > +} > + > +/* > + * Trigger timestamp (boolean): > + * false - Disable trigger timestamp. > + * true - Enable trigger timestamp. > + */ > +static ssize_t dsb_trig_ts_store(struct device *dev, > + struct device_attribute *attr, > + const char *buf, > + size_t size) > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + unsigned long val; > + > + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) > + return -EINVAL; > + > + spin_lock(&drvdata->spinlock); > + if (val) > + drvdata->dsb->trig_ts = true; > + else > + drvdata->dsb->trig_ts = false; > + spin_unlock(&drvdata->spinlock); > + return size; > +} > +static DEVICE_ATTR_RW(dsb_trig_ts); > + > +static struct attribute *tpdm_dsb_attrs[] = { > + &dev_attr_dsb_trig_ts.attr, > + &dev_attr_dsb_trig_type.attr, > + NULL, > +}; > + > +static struct attribute_group tpdm_dsb_attr_grp = { > + .attrs = tpdm_dsb_attrs, > + .is_visible = tpdm_dsb_is_visible, > +}; > + > static const struct attribute_group *tpdm_attr_grps[] = { > &tpdm_attr_grp, > + &tpdm_dsb_attr_grp, > NULL, > }; > Rest looks fine. Suzuk
On 8/7/2023 5:42 PM, Suzuki K Poulose wrote: > On 25/07/2023 08:15, Tao Zhang wrote: >> The nodes are needed to set or show the trigger timestamp and >> trigger type. This change is to add these nodes to achieve these >> function. >> >> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> >> --- >> .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 24 ++++++ >> drivers/hwtracing/coresight/coresight-tpdm.c | 94 >> ++++++++++++++++++++++ >> 2 files changed, 118 insertions(+) >> >> diff --git >> a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> index dbc2fbd0..0b7b4ad 100644 >> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> @@ -21,3 +21,27 @@ Description: >> Accepts only one value - 1. >> 1 : Reset the dataset of the tpdm >> + >> +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_type >> +Date: March 2023 >> +KernelVersion 6.5 >> +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang >> (QUIC) <quic_taozha@quicinc.com> >> +Description: >> + (Write) Set the trigger type of DSB tpdm. Read the trigger >> + type of DSB tpdm. > > Please use: (RW) instead of (Write). > > (RW) Set/Get the trigger type of the DSB for TPDM. > Similarly for the items below. I will update this in the next patch series. > >> + >> + Accepts only one of the 2 values - 0 or 1. >> + 0 : Set the DSB trigger type to false >> + 1 : Set the DSB trigger type to true >> + >> +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_ts >> +Date: March 2023 >> +KernelVersion 6.5 >> +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang >> (QUIC) <quic_taozha@quicinc.com> >> +Description: >> + (Write) Set the trigger timestamp of DSB tpdm. Read the >> + trigger timestamp of DSB tpdm. >> + >> + Accepts only one of the 2 values - 0 or 1. >> + 0 : Set the DSB trigger type to false >> + 1 : Set the DSB trigger type to true >> diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c >> b/drivers/hwtracing/coresight/coresight-tpdm.c >> index acc3eea..62efc18 100644 >> --- a/drivers/hwtracing/coresight/coresight-tpdm.c >> +++ b/drivers/hwtracing/coresight/coresight-tpdm.c >> @@ -20,6 +20,18 @@ >> DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm"); >> +static umode_t tpdm_dsb_is_visible(struct kobject *kobj, >> + struct attribute *attr, int n) > > Please keep the alignment. I will update this in the next patch series. > >> +{ >> + struct device *dev = kobj_to_dev(kobj); >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + >> + if (drvdata && (drvdata->datasets & TPDM_PIDR0_DS_DSB)) > > As suggested earlier, add a wrapper for the above check. I will update this in the next patch series. > >> + return attr->mode; >> + >> + return 0; >> +} >> + >> static void tpdm_reset_datasets(struct tpdm_drvdata *drvdata) >> { >> if (drvdata->datasets & TPDM_PIDR0_DS_DSB) { >> @@ -229,8 +241,90 @@ static struct attribute_group tpdm_attr_grp = { >> .attrs = tpdm_attrs, >> }; >> +static ssize_t dsb_trig_type_show(struct device *dev, >> + struct device_attribute *attr, char *buf) > > Please follow the above alignment for all functions throughout the > series. There are unaligned parameter lists scattered around the series. I will update this in the next patch series. Best, Tao > >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + >> + return sysfs_emit(buf, "%u\n", >> + (unsigned int)drvdata->dsb->trig_type); >> +} >> + >> +/* >> + * Trigger type (boolean): >> + * false - Disable trigger type. >> + * true - Enable trigger type. >> + */ >> +static ssize_t dsb_trig_type_store(struct device *dev, >> + struct device_attribute *attr, >> + const char *buf, >> + size_t size) >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + unsigned long val; >> + >> + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) >> + return -EINVAL; >> + >> + spin_lock(&drvdata->spinlock); >> + if (val) >> + drvdata->dsb->trig_type = true; >> + else >> + drvdata->dsb->trig_type = false; >> + spin_unlock(&drvdata->spinlock); >> + return size; >> +} >> +static DEVICE_ATTR_RW(dsb_trig_type); >> + >> +static ssize_t dsb_trig_ts_show(struct device *dev, >> + struct device_attribute *attr, char *buf) >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + >> + return sysfs_emit(buf, "%u\n", >> + (unsigned int)drvdata->dsb->trig_ts); >> +} >> + >> +/* >> + * Trigger timestamp (boolean): >> + * false - Disable trigger timestamp. >> + * true - Enable trigger timestamp. >> + */ >> +static ssize_t dsb_trig_ts_store(struct device *dev, >> + struct device_attribute *attr, >> + const char *buf, >> + size_t size) >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + unsigned long val; >> + >> + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) >> + return -EINVAL; >> + >> + spin_lock(&drvdata->spinlock); >> + if (val) >> + drvdata->dsb->trig_ts = true; >> + else >> + drvdata->dsb->trig_ts = false; >> + spin_unlock(&drvdata->spinlock); >> + return size; >> +} >> +static DEVICE_ATTR_RW(dsb_trig_ts); >> + >> +static struct attribute *tpdm_dsb_attrs[] = { >> + &dev_attr_dsb_trig_ts.attr, >> + &dev_attr_dsb_trig_type.attr, >> + NULL, >> +}; >> + >> +static struct attribute_group tpdm_dsb_attr_grp = { >> + .attrs = tpdm_dsb_attrs, >> + .is_visible = tpdm_dsb_is_visible, >> +}; >> + >> static const struct attribute_group *tpdm_attr_grps[] = { >> &tpdm_attr_grp, >> + &tpdm_dsb_attr_grp, >> NULL, >> }; > > Rest looks fine. > > Suzuk >
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm index dbc2fbd0..0b7b4ad 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm @@ -21,3 +21,27 @@ Description: Accepts only one value - 1. 1 : Reset the dataset of the tpdm + +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_type +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> +Description: + (Write) Set the trigger type of DSB tpdm. Read the trigger + type of DSB tpdm. + + Accepts only one of the 2 values - 0 or 1. + 0 : Set the DSB trigger type to false + 1 : Set the DSB trigger type to true + +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_ts +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> +Description: + (Write) Set the trigger timestamp of DSB tpdm. Read the + trigger timestamp of DSB tpdm. + + Accepts only one of the 2 values - 0 or 1. + 0 : Set the DSB trigger type to false + 1 : Set the DSB trigger type to true diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index acc3eea..62efc18 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -20,6 +20,18 @@ DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm"); +static umode_t tpdm_dsb_is_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + + if (drvdata && (drvdata->datasets & TPDM_PIDR0_DS_DSB)) + return attr->mode; + + return 0; +} + static void tpdm_reset_datasets(struct tpdm_drvdata *drvdata) { if (drvdata->datasets & TPDM_PIDR0_DS_DSB) { @@ -229,8 +241,90 @@ static struct attribute_group tpdm_attr_grp = { .attrs = tpdm_attrs, }; +static ssize_t dsb_trig_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + + return sysfs_emit(buf, "%u\n", + (unsigned int)drvdata->dsb->trig_type); +} + +/* + * Trigger type (boolean): + * false - Disable trigger type. + * true - Enable trigger type. + */ +static ssize_t dsb_trig_type_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + unsigned long val; + + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + if (val) + drvdata->dsb->trig_type = true; + else + drvdata->dsb->trig_type = false; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_trig_type); + +static ssize_t dsb_trig_ts_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + + return sysfs_emit(buf, "%u\n", + (unsigned int)drvdata->dsb->trig_ts); +} + +/* + * Trigger timestamp (boolean): + * false - Disable trigger timestamp. + * true - Enable trigger timestamp. + */ +static ssize_t dsb_trig_ts_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + unsigned long val; + + if ((kstrtoul(buf, 0, &val)) || (val & ~1UL)) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + if (val) + drvdata->dsb->trig_ts = true; + else + drvdata->dsb->trig_ts = false; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_trig_ts); + +static struct attribute *tpdm_dsb_attrs[] = { + &dev_attr_dsb_trig_ts.attr, + &dev_attr_dsb_trig_type.attr, + NULL, +}; + +static struct attribute_group tpdm_dsb_attr_grp = { + .attrs = tpdm_dsb_attrs, + .is_visible = tpdm_dsb_is_visible, +}; + static const struct attribute_group *tpdm_attr_grps[] = { &tpdm_attr_grp, + &tpdm_dsb_attr_grp, NULL, };
The nodes are needed to set or show the trigger timestamp and trigger type. This change is to add these nodes to achieve these function. Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> --- .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 24 ++++++ drivers/hwtracing/coresight/coresight-tpdm.c | 94 ++++++++++++++++++++++ 2 files changed, 118 insertions(+)