| Message ID | 1682586037-25973-9-git-send-email-quic_taozha@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add support to configure TPDM DSB subunit | expand |
On 27/04/2023 10:00, Tao Zhang wrote: > Add nodes to configure trigger pattern and trigger pattern mask. > Each DSB subunit TPDM has maximum of n(n<7) XPR registers to > configure trigger pattern match output. Eight 32 bit registers > providing DSB interface trigger output pattern match comparison. > And each DSB subunit TPDM has maximum of m(m<7) XPMR registers to > configure trigger pattern mask match output. Eight 32 bit > registers providing DSB interface trigger output pattern match > mask. > > Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> > --- > .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 30 ++++++++ > drivers/hwtracing/coresight/coresight-tpdm.c | 85 ++++++++++++++++++++++ > drivers/hwtracing/coresight/coresight-tpdm.h | 8 ++ > 3 files changed, 123 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > index a57f000..c04c735 100644 > --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm > @@ -92,3 +92,33 @@ Description: > <integer1> : Start EDCMR register number > <integer2> : End EDCMR register number > <integer3> : The value need to be written > + > +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_val > +Date: March 2023 > +KernelVersion 6.3 > +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> > +Description: > + (Write) Set the trigger pattern value of DSB tpdm. > + Read the trigger pattern value of DSB tpdm. > + > + Expected format is the following: > + <integer1> <integer2> > + > + Where: > + <integer1> : Index number of XPR register, the range is 0 to 7 > + <integer2> : The value need to be written I assume the values written to the registers are not special and doesn't have meaning and thus need not be documented ? > + > +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_mask > +Date: March 2023 > +KernelVersion 6.3 Same as the previous one, 6.5 please > +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> > +Description: > + (Write) Set the trigger pattern mask of DSB tpdm. > + Read the trigger pattern mask of DSB tpdm. > + > + Expected format is the following: > + <integer1> <integer2> > + > + Where: > + <integer1> : Index number of XPMR register, the range is 0 to 7 > + <integer2> : The value need to be written > diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c > index a40e458..9387bdf 100644 > --- a/drivers/hwtracing/coresight/coresight-tpdm.c > +++ b/drivers/hwtracing/coresight/coresight-tpdm.c > @@ -89,6 +89,13 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) > writel_relaxed(drvdata->dsb->edge_ctrl_mask[i], > drvdata->base + TPDM_DSB_EDCMR(i)); > > + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { Same as the previous, can we safely assume that write to these registers won't trigger an Error if not impelemented ? > + writel_relaxed(drvdata->dsb->trig_patt_val[i], > + drvdata->base + TPDM_DSB_XPR(i)); > + writel_relaxed(drvdata->dsb->trig_patt_mask[i], > + drvdata->base + TPDM_DSB_XPMR(i)); > + } > + > val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); > /* Set trigger timestamp */ > if (drvdata->dsb->trig_ts) > @@ -444,6 +451,82 @@ static ssize_t dsb_edge_ctrl_mask_store(struct device *dev, > } > static DEVICE_ATTR_RW(dsb_edge_ctrl_mask); > > +static ssize_t dsb_trig_patt_val_show(struct device *dev, > + struct device_attribute *attr, > + char *buf) > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + ssize_t size = 0; > + int i = 0; > + > + spin_lock(&drvdata->spinlock); > + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { > + size += sysfs_emit_at(buf, size, > + "Index: 0x%x Value: 0x%x\n", i, > + drvdata->dsb->trig_patt_val[i]); Please detect the return of 0 and break. Same below. > + } > + spin_unlock(&drvdata->spinlock); > + return size; > +} > + > +static ssize_t dsb_trig_patt_val_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 index, val; > + > + if (sscanf(buf, "%lx %lx", &index, &val) != 2) > + return -EINVAL; > + if (index >= TPDM_DSB_MAX_PATT) > + return -EPERM; > + > + spin_lock(&drvdata->spinlock); > + drvdata->dsb->trig_patt_val[index] = val; > + spin_unlock(&drvdata->spinlock); > + return size; > +} > +static DEVICE_ATTR_RW(dsb_trig_patt_val); > + > +static ssize_t dsb_trig_patt_mask_show(struct device *dev, > + struct device_attribute *attr, > + char *buf) > +{ > + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > + ssize_t size = 0; > + int i = 0; > + > + spin_lock(&drvdata->spinlock); > + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { > + size += sysfs_emit_at(buf, size, > + "Index: 0x%x Value: 0x%x\n", i, > + drvdata->dsb->trig_patt_mask[i]); > + } > + spin_unlock(&drvdata->spinlock); > + return size; Suzuki
On 6/1/2023 9:28 PM, Suzuki K Poulose wrote: > On 27/04/2023 10:00, Tao Zhang wrote: >> Add nodes to configure trigger pattern and trigger pattern mask. >> Each DSB subunit TPDM has maximum of n(n<7) XPR registers to >> configure trigger pattern match output. Eight 32 bit registers >> providing DSB interface trigger output pattern match comparison. >> And each DSB subunit TPDM has maximum of m(m<7) XPMR registers to >> configure trigger pattern mask match output. Eight 32 bit >> registers providing DSB interface trigger output pattern match >> mask. >> >> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> >> --- >> .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 30 ++++++++ >> drivers/hwtracing/coresight/coresight-tpdm.c | 85 >> ++++++++++++++++++++++ >> drivers/hwtracing/coresight/coresight-tpdm.h | 8 ++ >> 3 files changed, 123 insertions(+) >> >> diff --git >> a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> index a57f000..c04c735 100644 >> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm >> @@ -92,3 +92,33 @@ Description: >> <integer1> : Start EDCMR register number >> <integer2> : End EDCMR register number >> <integer3> : The value need to be written >> + >> +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_val >> +Date: March 2023 >> +KernelVersion 6.3 >> +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang >> (QUIC) <quic_taozha@quicinc.com> >> +Description: >> + (Write) Set the trigger pattern value of DSB tpdm. >> + Read the trigger pattern value of DSB tpdm. >> + >> + Expected format is the following: >> + <integer1> <integer2> >> + >> + Where: >> + <integer1> : Index number of XPR register, the range is 0 to 7 >> + <integer2> : The value need to be written > > I assume the values written to the registers are not special and doesn't > have meaning and thus need not be documented ? Sure, I will update this in the next patch series. > >> + >> +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_mask >> +Date: March 2023 >> +KernelVersion 6.3 > > Same as the previous one, 6.5 please Sure, I will update this in the next patch series. > >> +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang >> (QUIC) <quic_taozha@quicinc.com> >> +Description: >> + (Write) Set the trigger pattern mask of DSB tpdm. >> + Read the trigger pattern mask of DSB tpdm. >> + >> + Expected format is the following: >> + <integer1> <integer2> >> + >> + Where: >> + <integer1> : Index number of XPMR register, the range is 0 >> to 7 >> + <integer2> : The value need to be written >> diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c >> b/drivers/hwtracing/coresight/coresight-tpdm.c >> index a40e458..9387bdf 100644 >> --- a/drivers/hwtracing/coresight/coresight-tpdm.c >> +++ b/drivers/hwtracing/coresight/coresight-tpdm.c >> @@ -89,6 +89,13 @@ static void tpdm_enable_dsb(struct tpdm_drvdata >> *drvdata) >> writel_relaxed(drvdata->dsb->edge_ctrl_mask[i], >> drvdata->base + TPDM_DSB_EDCMR(i)); >> + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { > > Same as the previous, can we safely assume that write to these > registers won't trigger an Error if not impelemented ? Yes, it won't trigger an error since these inexistent register's addresses are not occupied and safe for being accessed. > >> + writel_relaxed(drvdata->dsb->trig_patt_val[i], >> + drvdata->base + TPDM_DSB_XPR(i)); >> + writel_relaxed(drvdata->dsb->trig_patt_mask[i], >> + drvdata->base + TPDM_DSB_XPMR(i)); >> + } >> + >> val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); >> /* Set trigger timestamp */ >> if (drvdata->dsb->trig_ts) >> @@ -444,6 +451,82 @@ static ssize_t dsb_edge_ctrl_mask_store(struct >> device *dev, >> } >> static DEVICE_ATTR_RW(dsb_edge_ctrl_mask); >> +static ssize_t dsb_trig_patt_val_show(struct device *dev, >> + struct device_attribute *attr, >> + char *buf) >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + ssize_t size = 0; >> + int i = 0; >> + >> + spin_lock(&drvdata->spinlock); >> + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { >> + size += sysfs_emit_at(buf, size, >> + "Index: 0x%x Value: 0x%x\n", i, >> + drvdata->dsb->trig_patt_val[i]); > > Please detect the return of 0 and break. Same below. See my comments in patch #7 mail. Best, Tao > > >> + } >> + spin_unlock(&drvdata->spinlock); >> + return size; >> +} >> + >> +static ssize_t dsb_trig_patt_val_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 index, val; >> + >> + if (sscanf(buf, "%lx %lx", &index, &val) != 2) >> + return -EINVAL; >> + if (index >= TPDM_DSB_MAX_PATT) >> + return -EPERM; >> + >> + spin_lock(&drvdata->spinlock); >> + drvdata->dsb->trig_patt_val[index] = val; >> + spin_unlock(&drvdata->spinlock); >> + return size; >> +} >> +static DEVICE_ATTR_RW(dsb_trig_patt_val); >> + >> +static ssize_t dsb_trig_patt_mask_show(struct device *dev, >> + struct device_attribute *attr, >> + char *buf) >> +{ >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + ssize_t size = 0; >> + int i = 0; >> + >> + spin_lock(&drvdata->spinlock); >> + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { >> + size += sysfs_emit_at(buf, size, >> + "Index: 0x%x Value: 0x%x\n", i, >> + drvdata->dsb->trig_patt_mask[i]); >> + } >> + spin_unlock(&drvdata->spinlock); >> + return size; > > Suzuki >
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm index a57f000..c04c735 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm @@ -92,3 +92,33 @@ Description: <integer1> : Start EDCMR register number <integer2> : End EDCMR register number <integer3> : The value need to be written + +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_val +Date: March 2023 +KernelVersion 6.3 +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> +Description: + (Write) Set the trigger pattern value of DSB tpdm. + Read the trigger pattern value of DSB tpdm. + + Expected format is the following: + <integer1> <integer2> + + Where: + <integer1> : Index number of XPR register, the range is 0 to 7 + <integer2> : The value need to be written + +What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt_mask +Date: March 2023 +KernelVersion 6.3 +Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com> +Description: + (Write) Set the trigger pattern mask of DSB tpdm. + Read the trigger pattern mask of DSB tpdm. + + Expected format is the following: + <integer1> <integer2> + + Where: + <integer1> : Index number of XPMR register, the range is 0 to 7 + <integer2> : The value need to be written diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index a40e458..9387bdf 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -89,6 +89,13 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) writel_relaxed(drvdata->dsb->edge_ctrl_mask[i], drvdata->base + TPDM_DSB_EDCMR(i)); + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + writel_relaxed(drvdata->dsb->trig_patt_val[i], + drvdata->base + TPDM_DSB_XPR(i)); + writel_relaxed(drvdata->dsb->trig_patt_mask[i], + drvdata->base + TPDM_DSB_XPMR(i)); + } + val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); /* Set trigger timestamp */ if (drvdata->dsb->trig_ts) @@ -444,6 +451,82 @@ static ssize_t dsb_edge_ctrl_mask_store(struct device *dev, } static DEVICE_ATTR_RW(dsb_edge_ctrl_mask); +static ssize_t dsb_trig_patt_val_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + ssize_t size = 0; + int i = 0; + + spin_lock(&drvdata->spinlock); + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + size += sysfs_emit_at(buf, size, + "Index: 0x%x Value: 0x%x\n", i, + drvdata->dsb->trig_patt_val[i]); + } + spin_unlock(&drvdata->spinlock); + return size; +} + +static ssize_t dsb_trig_patt_val_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 index, val; + + if (sscanf(buf, "%lx %lx", &index, &val) != 2) + return -EINVAL; + if (index >= TPDM_DSB_MAX_PATT) + return -EPERM; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->trig_patt_val[index] = val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_trig_patt_val); + +static ssize_t dsb_trig_patt_mask_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + ssize_t size = 0; + int i = 0; + + spin_lock(&drvdata->spinlock); + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + size += sysfs_emit_at(buf, size, + "Index: 0x%x Value: 0x%x\n", i, + drvdata->dsb->trig_patt_mask[i]); + } + spin_unlock(&drvdata->spinlock); + return size; +} + +static ssize_t dsb_trig_patt_mask_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 index, val; + + if (sscanf(buf, "%lx %lx", &index, &val) != 2) + return -EINVAL; + if (index >= TPDM_DSB_MAX_PATT) + return -EPERM; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->trig_patt_mask[index] = val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_trig_patt_mask); + static ssize_t dsb_trig_type_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -518,6 +601,8 @@ static struct attribute *tpdm_dsb_attrs[] = { &dev_attr_dsb_mode.attr, &dev_attr_dsb_edge_ctrl.attr, &dev_attr_dsb_edge_ctrl_mask.attr, + &dev_attr_dsb_trig_patt_val.attr, + &dev_attr_dsb_trig_patt_mask.attr, &dev_attr_dsb_trig_ts.attr, &dev_attr_dsb_trig_type.attr, NULL, diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index f25dcdec..55c620f 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -12,6 +12,8 @@ /* DSB Subunit Registers */ #define TPDM_DSB_CR (0x780) #define TPDM_DSB_TIER (0x784) +#define TPDM_DSB_XPR(n) (0x7C8 + (n * 4)) +#define TPDM_DSB_XPMR(n) (0x7E8 + (n * 4)) #define TPDM_DSB_EDCR(n) (0x808 + (n * 4)) #define TPDM_DSB_EDCMR(n) (0x848 + (n * 4)) @@ -76,12 +78,16 @@ #define TPDM_DSB_MAX_EDCR 16 /* MAX number of EDCMR registers */ #define TPDM_DSB_MAX_EDCMR 8 +/* MAX number of DSB pattern */ +#define TPDM_DSB_MAX_PATT 8 /** * struct dsb_dataset - specifics associated to dsb dataset * @mode: DSB programming mode * @edge_ctrl: Save value for edge control * @edge_ctrl_mask: Save value for edge control mask + * @trig_patt_val: Save value for trigger pattern + * @trig_patt_mask: Save value for trigger pattern mask * @trig_ts: Enable/Disable trigger timestamp. * @trig_type: Enable/Disable trigger type. */ @@ -89,6 +95,8 @@ struct dsb_dataset { u32 mode; u32 edge_ctrl[TPDM_DSB_MAX_EDCR]; u32 edge_ctrl_mask[TPDM_DSB_MAX_EDCMR]; + u32 trig_patt_val[TPDM_DSB_MAX_PATT]; + u32 trig_patt_mask[TPDM_DSB_MAX_PATT]; bool trig_ts; bool trig_type; };
Add nodes to configure trigger pattern and trigger pattern mask. Each DSB subunit TPDM has maximum of n(n<7) XPR registers to configure trigger pattern match output. Eight 32 bit registers providing DSB interface trigger output pattern match comparison. And each DSB subunit TPDM has maximum of m(m<7) XPMR registers to configure trigger pattern mask match output. Eight 32 bit registers providing DSB interface trigger output pattern match mask. Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> --- .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 30 ++++++++ drivers/hwtracing/coresight/coresight-tpdm.c | 85 ++++++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpdm.h | 8 ++ 3 files changed, 123 insertions(+)