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authorTao Zhang <quic_taozha@quicinc.com>2023-09-28 14:29:44 +0800
committerSuzuki K Poulose <suzuki.poulose@arm.com>2023-11-16 11:35:34 +0000
commit4c983382a29eaddd8746af23702f657258bb91cc (patch)
tree7fe6c3736f0874f1239cdbc13e118a984dbbda90 /drivers/hwtracing
parenta8138a9445e6d159138b7e574dc5ee7cbcc2f06a (diff)
downloadlinux-4c983382a29eaddd8746af23702f657258bb91cc.tar.gz
coresight-tpdm: Add nodes for timestamp request
Add nodes to configure the timestamp request based on input pattern match. 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 <quic_taozha@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/1695882586-10306-12-git-send-email-quic_taozha@quicinc.com
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/coresight-tpdm.c155
-rw-r--r--drivers/hwtracing/coresight/coresight-tpdm.h24
2 files changed, 172 insertions, 7 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
index e04c41f832656..693b90c82f3a0 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.c
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -51,6 +51,16 @@ static ssize_t tpdm_simple_dataset_show(struct device *dev,
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->trig_patt_mask[tpdm_attr->idx]);
+ case DSB_PATT:
+ if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
+ return -EINVAL;
+ return sysfs_emit(buf, "0x%x\n",
+ drvdata->dsb->patt_val[tpdm_attr->idx]);
+ case DSB_PATT_MASK:
+ if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
+ return -EINVAL;
+ return sysfs_emit(buf, "0x%x\n",
+ drvdata->dsb->patt_mask[tpdm_attr->idx]);
}
return -EINVAL;
}
@@ -85,6 +95,18 @@ static ssize_t tpdm_simple_dataset_store(struct device *dev,
else
ret = -EINVAL;
break;
+ case DSB_PATT:
+ if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
+ drvdata->dsb->patt_val[tpdm_attr->idx] = val;
+ else
+ ret = -EINVAL;
+ break;
+ case DSB_PATT_MASK:
+ if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
+ drvdata->dsb->patt_mask[tpdm_attr->idx] = val;
+ else
+ ret = -EINVAL;
+ break;
default:
ret = -EINVAL;
}
@@ -141,6 +163,36 @@ static void set_dsb_mode(struct tpdm_drvdata *drvdata, u32 *val)
*val &= ~TPDM_DSB_CR_MODE;
}
+static void set_dsb_tier(struct tpdm_drvdata *drvdata)
+{
+ u32 val;
+
+ val = readl_relaxed(drvdata->base + TPDM_DSB_TIER);
+
+ /* Clear all relevant fields */
+ val &= ~(TPDM_DSB_TIER_PATT_TSENAB | TPDM_DSB_TIER_PATT_TYPE |
+ TPDM_DSB_TIER_XTRIG_TSENAB);
+
+ /* 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;
+
+ writel_relaxed(val, drvdata->base + TPDM_DSB_TIER);
+}
+
static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata)
{
u32 val, i;
@@ -152,18 +204,17 @@ 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->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],
drvdata->base + TPDM_DSB_XPMR(i));
}
- 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;
- writel_relaxed(val, drvdata->base + TPDM_DSB_TIER);
+
+ set_dsb_tier(drvdata);
val = readl_relaxed(drvdata->base + TPDM_DSB_CR);
/* Set the mode of DSB dataset */
@@ -483,6 +534,67 @@ static ssize_t ctrl_mask_store(struct device *dev,
}
static DEVICE_ATTR_WO(ctrl_mask);
+static ssize_t enable_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 enable_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(enable_ts);
+
+static ssize_t set_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 set_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(set_type);
+
static ssize_t dsb_trig_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -605,6 +717,28 @@ static struct attribute *tpdm_dsb_trig_patt_attrs[] = {
NULL,
};
+static struct attribute *tpdm_dsb_patt_attrs[] = {
+ DSB_PATT_ATTR(0),
+ DSB_PATT_ATTR(1),
+ DSB_PATT_ATTR(2),
+ DSB_PATT_ATTR(3),
+ DSB_PATT_ATTR(4),
+ DSB_PATT_ATTR(5),
+ DSB_PATT_ATTR(6),
+ DSB_PATT_ATTR(7),
+ DSB_PATT_MASK_ATTR(0),
+ DSB_PATT_MASK_ATTR(1),
+ DSB_PATT_MASK_ATTR(2),
+ DSB_PATT_MASK_ATTR(3),
+ DSB_PATT_MASK_ATTR(4),
+ DSB_PATT_MASK_ATTR(5),
+ DSB_PATT_MASK_ATTR(6),
+ DSB_PATT_MASK_ATTR(7),
+ &dev_attr_enable_ts.attr,
+ &dev_attr_set_type.attr,
+ NULL,
+};
+
static struct attribute *tpdm_dsb_attrs[] = {
&dev_attr_dsb_mode.attr,
&dev_attr_dsb_trig_ts.attr,
@@ -629,11 +763,18 @@ static struct attribute_group tpdm_dsb_trig_patt_grp = {
.name = "dsb_trig_patt",
};
+static struct attribute_group tpdm_dsb_patt_grp = {
+ .attrs = tpdm_dsb_patt_attrs,
+ .is_visible = tpdm_dsb_is_visible,
+ .name = "dsb_patt",
+};
+
static const struct attribute_group *tpdm_attr_grps[] = {
&tpdm_attr_grp,
&tpdm_dsb_attr_grp,
&tpdm_dsb_edge_grp,
&tpdm_dsb_trig_patt_grp,
+ &tpdm_dsb_patt_grp,
NULL,
};
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h
index 2cf7bdbdbb15b..891979db111ac 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))
@@ -28,8 +30,12 @@
/* Data bits for DSB test mode */
#define TPDM_DSB_CR_TEST_MODE GENMASK(10, 9)
+/* 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 */
/* DSB mode bits mask */
@@ -120,14 +126,26 @@
tpdm_simple_dataset_rw(xpmr##nr, \
DSB_TRIG_PATT_MASK, nr)
+#define DSB_PATT_ATTR(nr) \
+ tpdm_simple_dataset_rw(tpr##nr, \
+ DSB_PATT, nr)
+
+#define DSB_PATT_MASK_ATTR(nr) \
+ tpdm_simple_dataset_rw(tpmr##nr, \
+ DSB_PATT_MASK, nr)
+
/**
* struct dsb_dataset - specifics associated to dsb dataset
* @mode: DSB programming mode
* @edge_ctrl_idx Index number of the edge control
* @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.
*/
@@ -136,8 +154,12 @@ struct dsb_dataset {
u32 edge_ctrl_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;
};
@@ -169,6 +191,8 @@ enum dataset_mem {
DSB_EDGE_CTRL_MASK,
DSB_TRIG_PATT,
DSB_TRIG_PATT_MASK,
+ DSB_PATT,
+ DSB_PATT_MASK,
};
/**