+
static irqreturn_t hisi_ptt_irq(int irq, void *context)
{
struct hisi_ptt *hisi_ptt = context;
@@ -169,7 +233,7 @@ static irqreturn_t hisi_ptt_irq(int irq, void *context)
if (!(status & HISI_PTT_TRACE_INT_STAT_MASK))
return IRQ_NONE;
- return IRQ_HANDLED;
+ return IRQ_WAKE_THREAD;
}
static void hisi_ptt_irq_free_vectors(void *pdev)
@@ -192,8 +256,10 @@ static int hisi_ptt_register_irq(struct hisi_ptt *hisi_ptt)
if (ret < 0)
return ret;
- ret = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, HISI_PTT_TRACE_DMA_IRQ),
- hisi_ptt_irq, 0, DRV_NAME, hisi_ptt);
+ ret = devm_request_threaded_irq(&pdev->dev,
why add code in patch 2/8 and then immediately change 3/8?
+ pci_irq_vector(pdev,
HISI_PTT_TRACE_DMA_IRQ),
+ hisi_ptt_irq, hisi_ptt_isr, 0,
+ DRV_NAME, hisi_ptt);
if (ret) {
pci_err(pdev, "failed to request irq %d, ret = %d.\n",
pci_irq_vector(pdev, HISI_PTT_TRACE_DMA_IRQ), ret);
@@ -270,6 +336,429 @@ static void hisi_ptt_init_ctrls(struct hisi_ptt *hisi_ptt)
hisi_ptt->trace_ctrl.default_cpu =
cpumask_first(cpumask_of_node(dev_to_node(&pdev->dev)));
}
+#define HISI_PTT_PMU_FILTER_IS_PORT BIT(19)
+#define HISI_PTT_PMU_FILTER_VAL_MASK GENMASK(15, 0)
+#define HISI_PTT_PMU_DIRECTION_MASK GENMASK(23, 20)
+#define HISI_PTT_PMU_TYPE_MASK GENMASK(31, 24)
+#define HISI_PTT_PMU_FORMAT_MASK GENMASK(35, 32)
+
+static ssize_t available_root_port_filters_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hisi_ptt *hisi_ptt = to_hisi_ptt(dev_get_drvdata(dev));
+ struct hisi_ptt_filter_desc *filter;
+ int pos = 0;
+
+ if (list_empty(&hisi_ptt->port_filters))
+ return sysfs_emit(buf, "\n");
+
+ mutex_lock(&hisi_ptt->mutex);
+ list_for_each_entry(filter, &hisi_ptt->port_filters, list)
+ pos += sysfs_emit_at(buf, pos, "%s 0x%05lx\n",
+ pci_name(filter->pdev),
+ hisi_ptt_get_filter_val(filter->pdev) |
+ HISI_PTT_PMU_FILTER_IS_PORT);
+
+ mutex_unlock(&hisi_ptt->mutex);
+ return pos;
+}
+static DEVICE_ATTR_ADMIN_RO(available_root_port_filters);
+
+static ssize_t available_requester_filters_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hisi_ptt *hisi_ptt = to_hisi_ptt(dev_get_drvdata(dev));
+ struct hisi_ptt_filter_desc *filter;
+ int pos = 0;
+
+ if (list_empty(&hisi_ptt->port_filters))
is this supposed to be req_filters? And is it safe to access without
locking?
+ return sysfs_emit(buf, "\n");
+
+ mutex_lock(&hisi_ptt->mutex);
+ list_for_each_entry(filter, &hisi_ptt->req_filters, list)
+ pos += sysfs_emit_at(buf, pos, "%s 0x%05x\n",
+ pci_name(filter->pdev),
+ hisi_ptt_get_filter_val(filter->pdev));
+
+ mutex_unlock(&hisi_ptt->mutex);
+ return pos;
+}
+static DEVICE_ATTR_ADMIN_RO(available_requester_filters);
+
+PMU_FORMAT_ATTR(filter, "config:0-19");
+PMU_FORMAT_ATTR(direction, "config:20-23");
+PMU_FORMAT_ATTR(type, "config:24-31");
+PMU_FORMAT_ATTR(format, "config:32-35");
+
+static struct attribute *hisi_ptt_pmu_format_attrs[] = {
+ &format_attr_filter.attr,
+ &format_attr_direction.attr,
+ &format_attr_type.attr,
+ &format_attr_format.attr,
+ NULL
+};
+
+static struct attribute_group hisi_ptt_pmu_format_group = {
+ .name = "format",
+ .attrs = hisi_ptt_pmu_format_attrs,
+};
+
+static struct attribute *hisi_ptt_pmu_filter_attrs[] = {
+ &dev_attr_available_root_port_filters.attr,
+ &dev_attr_available_requester_filters.attr,
+ NULL
+};
+
+static struct attribute_group hisi_ptt_pmu_filter_group = {
+ .attrs = hisi_ptt_pmu_filter_attrs,
+};
+
+static const struct attribute_group *hisi_ptt_pmu_groups[] = {
+ &hisi_ptt_pmu_format_group,
+ &hisi_ptt_pmu_filter_group,
+ NULL
+};
+
+/*
+ * The supported value of the direction parameter. See hisi_ptt.rst
+ * documentation for more details.
+ */
+static u32 hisi_ptt_trace_available_direction[] = {
+ 0,
+ 1,
+ 2,
+ 3,
this seems a very odd array.
And I assume it is const as it is modified - can this be non-global and
tied to the device context?
+};
+
+/* Different types can be set simultaneously */
+static u32 hisi_ptt_trace_available_type[] = {
+ 1, /* posted_request */
+ 2, /* non-posted_request */
+ 4, /* completion */
+};
+
+static u32 hisi_ptt_trace_availble_format[] = {
+ 0, /* 4DW */
+ 1, /* 8DW */
+};
+
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