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Each TPDM that support DSB subunit has maximum of n(n<7) TPR registers to configure value for timestamp request based on input pattern match. Eight 32 bit registers providing DSB interface timestamp request pattern match comparison. And each TPDM that support DSB subunit has maximum of m(m<7) TPMR registers to configure pattern mask for timestamp request. Eight 32 bit registers providing DSB interface timestamp request pattern match mask generation. Add nodes to enable/disable pattern timestamp and set pattern timestamp type. Signed-off-by: Tao Zhang --- .../ABI/testing/sysfs-bus-coresight-devices-tpdm | 57 +++++- drivers/hwtracing/coresight/coresight-tpdm.c | 205 ++++++++++++++++++++- drivers/hwtracing/coresight/coresight-tpdm.h | 16 ++ 3 files changed, 272 insertions(+), 6 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm index 66f9582..74a0126 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm @@ -130,4 +130,59 @@ Description: to the index number. Before writing data to this sysfs file, "dsb_trig_patt_idx" should be written first to configure the index number of the trigger pattern mask which needs to be - configured. \ No newline at end of file + configured. + +What: /sys/bus/coresight/devices//dsb_patt_idx +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + Read/Write the index number of the DSB tpdm pattern. Since + there are at most 8 TPR and TPMR registers for the parttern, + this value ranges from 0 to 7. + +What: /sys/bus/coresight/devices//dsb_patt_val +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + Read a set of the pattern values of the DSB TPDM. Write a data + to configure the pattern corresponding to the index number. + Before writing data to this sysfs file, "dsb_patt_idx" should be + written first to configure the index number of the pattern which + needs to be configured. + +What: /sys/bus/coresight/devices//dsb_patt_mask +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + Read a set of the pattern mask values of the DSB TPDM. Write a + data to configure the pattern mask corresponding to the index + number. Before writing data to this sysfs file, "dsb_patt_idx" + should be written first to configure the index number of the + pattern mask which needs to be configured. + +What: /sys/bus/coresight/devices//dsb_patt_ts +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (Write) Set the pattern timestamp of DSB tpdm. Read + the pattern timestamp of DSB tpdm. + + Accepts only one of the 2 values - 0 or 1. + 0 : Disable DSB pattern timestamp. + 1 : Enable DSB pattern timestamp. + +What: /sys/bus/coresight/devices//dsb_patt_type +Date: March 2023 +KernelVersion 6.5 +Contact: Jinlong Mao (QUIC) , Tao Zhang (QUIC) +Description: + (Write) Set the pattern type of DSB tpdm. Read + the pattern type of DSB tpdm. + + Accepts only one of the 2 values - 0 or 1. + 0 : Set the DSB pattern type to value. + 1 : Set the DSB pattern type to toggle. \ No newline at end of file diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index 1c32d27..f9e5a1d 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -69,6 +69,27 @@ static void set_dsb_perf_mode(struct tpdm_drvdata *drvdata, u32 *val) *val &= ~TPDM_DSB_CR_MODE; } +static void set_dsb_tier(struct tpdm_drvdata *drvdata, u32 *val) +{ + /* Set pattern timestamp type and enablement */ + if (drvdata->dsb->patt_ts) { + *val |= TPDM_DSB_TIER_PATT_TSENAB; + if (drvdata->dsb->patt_type) + *val |= TPDM_DSB_TIER_PATT_TYPE; + else + *val &= ~TPDM_DSB_TIER_PATT_TYPE; + } else { + *val &= ~TPDM_DSB_TIER_PATT_TSENAB; + } + + /* Set trigger timestamp */ + if (drvdata->dsb->trig_ts) + *val |= TPDM_DSB_TIER_XTRIG_TSENAB; + else + *val &= ~TPDM_DSB_TIER_XTRIG_TSENAB; + +} + static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) { u32 val, i; @@ -81,6 +102,10 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) drvdata->base + TPDM_DSB_EDCMR(i)); for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + writel_relaxed(drvdata->dsb->patt_val[i], + drvdata->base + TPDM_DSB_TPR(i)); + writel_relaxed(drvdata->dsb->patt_mask[i], + drvdata->base + TPDM_DSB_TPMR(i)); writel_relaxed(drvdata->dsb->trig_patt[i], drvdata->base + TPDM_DSB_XPR(i)); writel_relaxed(drvdata->dsb->trig_patt_mask[i], @@ -88,11 +113,7 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) } val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); - /* Set trigger timestamp */ - if (drvdata->dsb->trig_ts) - val |= TPDM_DSB_TIER_XTRIG_TSENAB; - else - val &= ~TPDM_DSB_TIER_XTRIG_TSENAB; + set_dsb_tier(drvdata, &val); writel_relaxed(val, drvdata->base + TPDM_DSB_TIER); val = readl_relaxed(drvdata->base + TPDM_DSB_CR); @@ -462,6 +483,175 @@ static ssize_t dsb_edge_ctrl_mask_store(struct device *dev, } static DEVICE_ATTR_RW(dsb_edge_ctrl_mask); +static ssize_t dsb_patt_idx_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->patt_idx); + +} + +static ssize_t dsb_patt_idx_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; + + if ((kstrtoul(buf, 0, &index)) || (index >= TPDM_DSB_MAX_PATT)) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->patt_idx = index; + spin_unlock(&drvdata->spinlock); + + return size; + +} +static DEVICE_ATTR_RW(dsb_patt_idx); + +static ssize_t dsb_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; + unsigned long bytes; + int i = 0; + + spin_lock(&drvdata->spinlock); + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + bytes = sysfs_emit_at(buf, size, + "Value: 0x%x\n", drvdata->dsb->patt_val[i]); + if (bytes <= 0) + break; + size += bytes; + } + spin_unlock(&drvdata->spinlock); + return size; +} + +static ssize_t dsb_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 val; + + if (kstrtoul(buf, 0, &val)) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->patt_val[drvdata->dsb->patt_idx] = val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_patt_val); + +static ssize_t dsb_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; + unsigned long bytes; + int i = 0; + + spin_lock(&drvdata->spinlock); + for (i = 0; i < TPDM_DSB_MAX_PATT; i++) { + bytes = sysfs_emit_at(buf, size, + "Value: 0x%x\n", drvdata->dsb->patt_mask[i]); + if (bytes <= 0) + break; + size += bytes; + } + spin_unlock(&drvdata->spinlock); + return size; +} + +static ssize_t dsb_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 val; + + if (kstrtoul(buf, 0, &val)) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->patt_mask[drvdata->dsb->patt_idx] = val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_patt_mask); + +static ssize_t dsb_patt_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->patt_ts); +} + +/* + * value 1: Enable/Disable DSB pattern timestamp + */ +static ssize_t dsb_patt_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); + drvdata->dsb->patt_ts = !!val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_patt_ts); + +static ssize_t dsb_patt_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->patt_type); +} + +/* + * value 1: Set DSB pattern type + */ +static ssize_t dsb_patt_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); + drvdata->dsb->patt_type = val; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_patt_type); + static ssize_t dsb_trig_patt_idx_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -645,6 +835,11 @@ static struct attribute *tpdm_dsb_attrs[] = { &dev_attr_dsb_edge_ctrl_idx.attr, &dev_attr_dsb_edge_ctrl_val.attr, &dev_attr_dsb_edge_ctrl_mask.attr, + &dev_attr_dsb_patt_idx.attr, + &dev_attr_dsb_patt_val.attr, + &dev_attr_dsb_patt_mask.attr, + &dev_attr_dsb_patt_ts.attr, + &dev_attr_dsb_patt_type.attr, &dev_attr_dsb_trig_patt_idx.attr, &dev_attr_dsb_trig_patt_val.attr, &dev_attr_dsb_trig_patt_mask.attr, diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index 7f688b2..7c52cf4 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_TPR(n) (0x788 + (n * 4)) +#define TPDM_DSB_TPMR(n) (0x7A8 + (n * 4)) #define TPDM_DSB_XPR(n) (0x7C8 + (n * 4)) #define TPDM_DSB_XPMR(n) (0x7E8 + (n * 4)) #define TPDM_DSB_EDCR(n) (0x808 + (n * 4)) @@ -24,8 +26,12 @@ /* Enable bit for DSB subunit trigger type */ #define TPDM_DSB_CR_TRIG_TYPE BIT(12) +/* Enable bit for DSB subunit pattern timestamp */ +#define TPDM_DSB_TIER_PATT_TSENAB BIT(0) /* Enable bit for DSB subunit trigger timestamp */ #define TPDM_DSB_TIER_XTRIG_TSENAB BIT(1) +/* Bit for DSB subunit pattern type */ +#define TPDM_DSB_TIER_PATT_TYPE BIT(2) /* DSB programming modes */ /* Test mode control bit*/ @@ -86,22 +92,32 @@ * struct dsb_dataset - specifics associated to dsb dataset * @mode: DSB programming mode * @edge_ctrl_idx Index number of the edge control + * @patt_idx Index number of pattern * @trig_patt_idx Index number of the trigger pattern * @edge_ctrl: Save value for edge control * @edge_ctrl_mask: Save value for edge control mask + * @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 + * @patt_ts: Enable/Disable pattern timestamp + * @patt_type: Set pattern type * @trig_ts: Enable/Disable trigger timestamp. * @trig_type: Enable/Disable trigger type. */ struct dsb_dataset { u32 mode; u32 edge_ctrl_idx; + u32 patt_idx; u32 trig_patt_idx; u32 edge_ctrl[TPDM_DSB_MAX_EDCR]; u32 edge_ctrl_mask[TPDM_DSB_MAX_EDCMR]; + u32 patt_val[TPDM_DSB_MAX_PATT]; + u32 patt_mask[TPDM_DSB_MAX_PATT]; u32 trig_patt[TPDM_DSB_MAX_PATT]; u32 trig_patt_mask[TPDM_DSB_MAX_PATT]; + bool patt_ts; + bool patt_type; bool trig_ts; bool trig_type; };