1 files changed, 287 insertions, 25 deletions

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
index 219c10eb752c..ce41482431f9 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
@@ -217,6 +217,7 @@ static ssize_t reset_store(struct device *dev,
 
 	/* No start-stop filtering for ViewInst */
 	config->vissctlr = 0x0;
+	config->vipcssctlr = 0x0;
 
 	/* Disable seq events */
 	for (i = 0; i < drvdata->nrseqstate-1; i++)
@@ -238,6 +239,7 @@ static ssize_t reset_store(struct device *dev,
 	for (i = 0; i < drvdata->nr_resource; i++)
 		config->res_ctrl[i] = 0x0;
 
+	config->ss_idx = 0x0;
 	for (i = 0; i < drvdata->nr_ss_cmp; i++) {
 		config->ss_ctrl[i] = 0x0;
 		config->ss_pe_cmp[i] = 0x0;
@@ -296,8 +298,6 @@ static ssize_t mode_store(struct device *dev,
 
 	spin_lock(&drvdata->spinlock);
 	config->mode = val & ETMv4_MODE_ALL;
-	etm4_set_mode_exclude(drvdata,
-			      config->mode & ETM_MODE_EXCLUDE ? true : false);
 
 	if (drvdata->instrp0 == true) {
 		/* start by clearing instruction P0 field */
@@ -652,10 +652,13 @@ static ssize_t cyc_threshold_store(struct device *dev,
 
 	if (kstrtoul(buf, 16, &val))
 		return -EINVAL;
+
+	/* mask off max threshold before checking min value */
+	val &= ETM_CYC_THRESHOLD_MASK;
 	if (val < drvdata->ccitmin)
 		return -EINVAL;
 
-	config->ccctlr = val & ETM_CYC_THRESHOLD_MASK;
+	config->ccctlr = val;
 	return size;
 }
 static DEVICE_ATTR_RW(cyc_threshold);
@@ -686,14 +689,16 @@ static ssize_t bb_ctrl_store(struct device *dev,
 		return -EINVAL;
 	if (!drvdata->nr_addr_cmp)
 		return -EINVAL;
+
 	/*
-	 * Bit[7:0] selects which address range comparator is used for
-	 * branch broadcast control.
+	 * Bit[8] controls include(1) / exclude(0), bits[0-7] select
+	 * individual range comparators. If include then at least 1
+	 * range must be selected.
 	 */
-	if (BMVAL(val, 0, 7) > drvdata->nr_addr_cmp)
+	if ((val & BIT(8)) && (BMVAL(val, 0, 7) == 0))
 		return -EINVAL;
 
-	config->bb_ctrl = val;
+	config->bb_ctrl = val & GENMASK(8, 0);
 	return size;
 }
 static DEVICE_ATTR_RW(bb_ctrl);
@@ -738,7 +743,7 @@ static ssize_t s_exlevel_vinst_show(struct device *dev,
 	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
 	struct etmv4_config *config = &drvdata->config;
 
-	val = BMVAL(config->vinst_ctrl, 16, 19);
+	val = (config->vinst_ctrl & ETM_EXLEVEL_S_VICTLR_MASK) >> 16;
 	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
 }
 
@@ -754,8 +759,8 @@ static ssize_t s_exlevel_vinst_store(struct device *dev,
 		return -EINVAL;
 
 	spin_lock(&drvdata->spinlock);
-	/* clear all EXLEVEL_S bits (bit[18] is never implemented) */
-	config->vinst_ctrl &= ~(BIT(16) | BIT(17) | BIT(19));
+	/* clear all EXLEVEL_S bits  */
+	config->vinst_ctrl &= ~(ETM_EXLEVEL_S_VICTLR_MASK);
 	/* enable instruction tracing for corresponding exception level */
 	val &= drvdata->s_ex_level;
 	config->vinst_ctrl |= (val << 16);
@@ -773,7 +778,7 @@ static ssize_t ns_exlevel_vinst_show(struct device *dev,
 	struct etmv4_config *config = &drvdata->config;
 
 	/* EXLEVEL_NS, bits[23:20] */
-	val = BMVAL(config->vinst_ctrl, 20, 23);
+	val = (config->vinst_ctrl & ETM_EXLEVEL_NS_VICTLR_MASK) >> 20;
 	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
 }
 
@@ -789,8 +794,8 @@ static ssize_t ns_exlevel_vinst_store(struct device *dev,
 		return -EINVAL;
 
 	spin_lock(&drvdata->spinlock);
-	/* clear EXLEVEL_NS bits (bit[23] is never implemented */
-	config->vinst_ctrl &= ~(BIT(20) | BIT(21) | BIT(22));
+	/* clear EXLEVEL_NS bits  */
+	config->vinst_ctrl &= ~(ETM_EXLEVEL_NS_VICTLR_MASK);
 	/* enable instruction tracing for corresponding exception level */
 	val &= drvdata->ns_ex_level;
 	config->vinst_ctrl |= (val << 20);
@@ -966,8 +971,12 @@ static ssize_t addr_range_store(struct device *dev,
 	unsigned long val1, val2;
 	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
 	struct etmv4_config *config = &drvdata->config;
+	int elements, exclude;
+
+	elements = sscanf(buf, "%lx %lx %x", &val1, &val2, &exclude);
 
-	if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
+	/*  exclude is optional, but need at least two parameter */
+	if (elements < 2)
 		return -EINVAL;
 	/* lower address comparator cannot have a higher address value */
 	if (val1 > val2)
@@ -995,9 +1004,11 @@ static ssize_t addr_range_store(struct device *dev,
 	/*
 	 * Program include or exclude control bits for vinst or vdata
 	 * whenever we change addr comparators to ETM_ADDR_TYPE_RANGE
+	 * use supplied value, or default to bit set in 'mode'
 	 */
-	etm4_set_mode_exclude(drvdata,
-			      config->mode & ETM_MODE_EXCLUDE ? true : false);
+	if (elements != 3)
+		exclude = config->mode & ETM_MODE_EXCLUDE;
+	etm4_set_mode_exclude(drvdata, exclude ? true : false);
 
 	spin_unlock(&drvdata->spinlock);
 	return size;
@@ -1054,8 +1065,6 @@ static ssize_t addr_start_store(struct device *dev,
 	config->addr_val[idx] = (u64)val;
 	config->addr_type[idx] = ETM_ADDR_TYPE_START;
 	config->vissctlr |= BIT(idx);
-	/* SSSTATUS, bit[9] - turn on start/stop logic */
-	config->vinst_ctrl |= BIT(9);
 	spin_unlock(&drvdata->spinlock);
 	return size;
 }
@@ -1111,8 +1120,6 @@ static ssize_t addr_stop_store(struct device *dev,
 	config->addr_val[idx] = (u64)val;
 	config->addr_type[idx] = ETM_ADDR_TYPE_STOP;
 	config->vissctlr |= BIT(idx + 16);
-	/* SSSTATUS, bit[9] - turn on start/stop logic */
-	config->vinst_ctrl |= BIT(9);
 	spin_unlock(&drvdata->spinlock);
 	return size;
 }
@@ -1228,6 +1235,131 @@ static ssize_t addr_context_store(struct device *dev,
 }
 static DEVICE_ATTR_RW(addr_context);
 
+static ssize_t addr_exlevel_s_ns_show(struct device *dev,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	u8 idx;
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	spin_lock(&drvdata->spinlock);
+	idx = config->addr_idx;
+	val = BMVAL(config->addr_acc[idx], 8, 14);
+	spin_unlock(&drvdata->spinlock);
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+
+static ssize_t addr_exlevel_s_ns_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t size)
+{
+	u8 idx;
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (kstrtoul(buf, 0, &val))
+		return -EINVAL;
+
+	if (val & ~((GENMASK(14, 8) >> 8)))
+		return -EINVAL;
+
+	spin_lock(&drvdata->spinlock);
+	idx = config->addr_idx;
+	/* clear Exlevel_ns & Exlevel_s bits[14:12, 11:8], bit[15] is res0 */
+	config->addr_acc[idx] &= ~(GENMASK(14, 8));
+	config->addr_acc[idx] |= (val << 8);
+	spin_unlock(&drvdata->spinlock);
+	return size;
+}
+static DEVICE_ATTR_RW(addr_exlevel_s_ns);
+
+static const char * const addr_type_names[] = {
+	"unused",
+	"single",
+	"range",
+	"start",
+	"stop"
+};
+
+static ssize_t addr_cmp_view_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	u8 idx, addr_type;
+	unsigned long addr_v, addr_v2, addr_ctrl;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+	int size = 0;
+	bool exclude = false;
+
+	spin_lock(&drvdata->spinlock);
+	idx = config->addr_idx;
+	addr_v = config->addr_val[idx];
+	addr_ctrl = config->addr_acc[idx];
+	addr_type = config->addr_type[idx];
+	if (addr_type == ETM_ADDR_TYPE_RANGE) {
+		if (idx & 0x1) {
+			idx -= 1;
+			addr_v2 = addr_v;
+			addr_v = config->addr_val[idx];
+		} else {
+			addr_v2 = config->addr_val[idx + 1];
+		}
+		exclude = config->viiectlr & BIT(idx / 2 + 16);
+	}
+	spin_unlock(&drvdata->spinlock);
+	if (addr_type) {
+		size = scnprintf(buf, PAGE_SIZE, "addr_cmp[%i] %s %#lx", idx,
+				 addr_type_names[addr_type], addr_v);
+		if (addr_type == ETM_ADDR_TYPE_RANGE) {
+			size += scnprintf(buf + size, PAGE_SIZE - size,
+					  " %#lx %s", addr_v2,
+					  exclude ? "exclude" : "include");
+		}
+		size += scnprintf(buf + size, PAGE_SIZE - size,
+				  " ctrl(%#lx)\n", addr_ctrl);
+	} else {
+		size = scnprintf(buf, PAGE_SIZE, "addr_cmp[%i] unused\n", idx);
+	}
+	return size;
+}
+static DEVICE_ATTR_RO(addr_cmp_view);
+
+static ssize_t vinst_pe_cmp_start_stop_show(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (!drvdata->nr_pe_cmp)
+		return -EINVAL;
+	val = config->vipcssctlr;
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+static ssize_t vinst_pe_cmp_start_stop_store(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t size)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (kstrtoul(buf, 16, &val))
+		return -EINVAL;
+	if (!drvdata->nr_pe_cmp)
+		return -EINVAL;
+
+	spin_lock(&drvdata->spinlock);
+	config->vipcssctlr = val;
+	spin_unlock(&drvdata->spinlock);
+	return size;
+}
+static DEVICE_ATTR_RW(vinst_pe_cmp_start_stop);
+
 static ssize_t seq_idx_show(struct device *dev,
 			    struct device_attribute *attr,
 			    char *buf)
@@ -1324,8 +1456,8 @@ static ssize_t seq_event_store(struct device *dev,
 
 	spin_lock(&drvdata->spinlock);
 	idx = config->seq_idx;
-	/* RST, bits[7:0] */
-	config->seq_ctrl[idx] = val & 0xFF;
+	/* Seq control has two masks B[15:8] F[7:0] */
+	config->seq_ctrl[idx] = val & 0xFFFF;
 	spin_unlock(&drvdata->spinlock);
 	return size;
 }
@@ -1580,12 +1712,129 @@ static ssize_t res_ctrl_store(struct device *dev,
 	if (idx % 2 != 0)
 		/* PAIRINV, bit[21] */
 		val &= ~BIT(21);
-	config->res_ctrl[idx] = val;
+	config->res_ctrl[idx] = val & GENMASK(21, 0);
 	spin_unlock(&drvdata->spinlock);
 	return size;
 }
 static DEVICE_ATTR_RW(res_ctrl);
 
+static ssize_t sshot_idx_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	val = config->ss_idx;
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+
+static ssize_t sshot_idx_store(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t size)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (kstrtoul(buf, 16, &val))
+		return -EINVAL;
+	if (val >= drvdata->nr_ss_cmp)
+		return -EINVAL;
+
+	spin_lock(&drvdata->spinlock);
+	config->ss_idx = val;
+	spin_unlock(&drvdata->spinlock);
+	return size;
+}
+static DEVICE_ATTR_RW(sshot_idx);
+
+static ssize_t sshot_ctrl_show(struct device *dev,
+			       struct device_attribute *attr,
+			       char *buf)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	spin_lock(&drvdata->spinlock);
+	val = config->ss_ctrl[config->ss_idx];
+	spin_unlock(&drvdata->spinlock);
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+
+static ssize_t sshot_ctrl_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t size)
+{
+	u8 idx;
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (kstrtoul(buf, 16, &val))
+		return -EINVAL;
+
+	spin_lock(&drvdata->spinlock);
+	idx = config->ss_idx;
+	config->ss_ctrl[idx] = val & GENMASK(24, 0);
+	/* must clear bit 31 in related status register on programming */
+	config->ss_status[idx] &= ~BIT(31);
+	spin_unlock(&drvdata->spinlock);
+	return size;
+}
+static DEVICE_ATTR_RW(sshot_ctrl);
+
+static ssize_t sshot_status_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	spin_lock(&drvdata->spinlock);
+	val = config->ss_status[config->ss_idx];
+	spin_unlock(&drvdata->spinlock);
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+static DEVICE_ATTR_RO(sshot_status);
+
+static ssize_t sshot_pe_ctrl_show(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	spin_lock(&drvdata->spinlock);
+	val = config->ss_pe_cmp[config->ss_idx];
+	spin_unlock(&drvdata->spinlock);
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
+}
+
+static ssize_t sshot_pe_ctrl_store(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t size)
+{
+	u8 idx;
+	unsigned long val;
+	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	struct etmv4_config *config = &drvdata->config;
+
+	if (kstrtoul(buf, 16, &val))
+		return -EINVAL;
+
+	spin_lock(&drvdata->spinlock);
+	idx = config->ss_idx;
+	config->ss_pe_cmp[idx] = val & GENMASK(7, 0);
+	/* must clear bit 31 in related status register on programming */
+	config->ss_status[idx] &= ~BIT(31);
+	spin_unlock(&drvdata->spinlock);
+	return size;
+}
+static DEVICE_ATTR_RW(sshot_pe_ctrl);
+
 static ssize_t ctxid_idx_show(struct device *dev,
 			      struct device_attribute *attr,
 			      char *buf)
@@ -1714,6 +1963,7 @@ static ssize_t ctxid_masks_store(struct device *dev,
 	unsigned long val1, val2, mask;
 	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
 	struct etmv4_config *config = &drvdata->config;
+	int nr_inputs;
 
 	/*
 	 * Don't use contextID tracing if coming from a PID namespace.  See
@@ -1729,7 +1979,9 @@ static ssize_t ctxid_masks_store(struct device *dev,
 	 */
 	if (!drvdata->ctxid_size || !drvdata->numcidc)
 		return -EINVAL;
-	if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
+	/* one mask if <= 4 comparators, two for up to 8 */
+	nr_inputs = sscanf(buf, "%lx %lx", &val1, &val2);
+	if ((drvdata->numcidc > 4) && (nr_inputs != 2))
 		return -EINVAL;
 
 	spin_lock(&drvdata->spinlock);
@@ -1903,6 +2155,7 @@ static ssize_t vmid_masks_store(struct device *dev,
 	unsigned long val1, val2, mask;
 	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
 	struct etmv4_config *config = &drvdata->config;
+	int nr_inputs;
 
 	/*
 	 * only implemented when vmid tracing is enabled, i.e. at least one
@@ -1910,7 +2163,9 @@ static ssize_t vmid_masks_store(struct device *dev,
 	 */
 	if (!drvdata->vmid_size || !drvdata->numvmidc)
 		return -EINVAL;
-	if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
+	/* one mask if <= 4 comparators, two for up to 8 */
+	nr_inputs = sscanf(buf, "%lx %lx", &val1, &val2);
+	if ((drvdata->numvmidc > 4) && (nr_inputs != 2))
 		return -EINVAL;
 
 	spin_lock(&drvdata->spinlock);
@@ -2033,6 +2288,13 @@ static struct attribute *coresight_etmv4_attrs[] = {
 	&dev_attr_addr_stop.attr,
 	&dev_attr_addr_ctxtype.attr,
 	&dev_attr_addr_context.attr,
+	&dev_attr_addr_exlevel_s_ns.attr,
+	&dev_attr_addr_cmp_view.attr,
+	&dev_attr_vinst_pe_cmp_start_stop.attr,
+	&dev_attr_sshot_idx.attr,
+	&dev_attr_sshot_ctrl.attr,
+	&dev_attr_sshot_pe_ctrl.attr,
+	&dev_attr_sshot_status.attr,
 	&dev_attr_seq_idx.attr,
 	&dev_attr_seq_state.attr,
 	&dev_attr_seq_event.attr,