@@ -18,7 +18,7 @@
#include "hisi_uncore_pmu.h"
-/* DDRC register definition */
+/* DDRC register definition in v1 */
#define DDRC_PERF_CTRL 0x010
#define DDRC_FLUX_WR 0x380
#define DDRC_FLUX_RD 0x384
@@ -34,12 +34,24 @@
#define DDRC_INT_CLEAR 0x6d0
#define DDRC_VERSION 0x710
+/* DDRC register definition in v2 */
+#define DDRC_V2_INT_MASK 0x528
+#define DDRC_V2_INT_STATUS 0x52c
+#define DDRC_V2_INT_CLEAR 0x530
+#define DDRC_V2_EVENT_CNT 0xE00
+#define DDRC_V2_EVENT_CTRL 0xE70
+#define DDRC_V2_EVENT_TYPE 0xE74
+#define DDRC_V2_PERF_CTRL 0xEA0
+
/* DDRC has 8-counters */
#define DDRC_NR_COUNTERS 0x8
#define DDRC_V1_PERF_CTRL_EN 0x2
+#define DDRC_V2_PERF_CTRL_EN 0x1
#define DDRC_V1_NR_EVENTS 0x07
+#define DDRC_V2_NR_EVENTS 0x90
+
/*
- * For DDRC PMU, there are eight-events and every event has been mapped
+ * For PMU v1, there are eight-events and every event has been mapped
* to fixed-purpose counters which register offset is not consistent.
* Therefore there is no write event type and we assume that event
* code (0 to 7) is equal to counter index in PMU driver.
@@ -61,6 +73,11 @@ static u32 hisi_ddrc_pmu_v1_get_counter_offset(int cntr_idx)
return ddrc_reg_off[cntr_idx];
}
+static u32 hisi_ddrc_pmu_v2_get_counter_offset(int cntr_idx)
+{
+ return DDRC_V2_EVENT_CNT + cntr_idx * 8;
+}
+
static u64 hisi_ddrc_pmu_v1_read_counter(struct hisi_pmu *ddrc_pmu,
struct hw_perf_event *hwc)
{
@@ -75,13 +92,34 @@ static void hisi_ddrc_pmu_v1_write_counter(struct hisi_pmu *ddrc_pmu,
ddrc_pmu->base + hisi_ddrc_pmu_v1_get_counter_offset(hwc->idx));
}
+static u64 hisi_ddrc_pmu_v2_read_counter(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc)
+{
+ return readq(ddrc_pmu->base +
+ hisi_ddrc_pmu_v2_get_counter_offset(hwc->idx));
+}
+
+static void hisi_ddrc_pmu_v2_write_counter(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc, u64 val)
+{
+ writeq(val,
+ ddrc_pmu->base + hisi_ddrc_pmu_v2_get_counter_offset(hwc->idx));
+}
+
/*
- * For DDRC PMU, event has been mapped to fixed-purpose counter by hardware,
- * so there is no need to write event type.
+ * For DDRC PMU v1, event has been mapped to fixed-purpose counter by hardware,
+ * so there is no need to write event type, while it is programmable counter in
+ * PMU v2.
*/
static void hisi_ddrc_pmu_write_evtype(struct hisi_pmu *hha_pmu, int idx,
u32 type)
{
+ u32 offset;
+
+ if (hha_pmu->identifier >= HISI_PMU_V2) {
+ offset = DDRC_V2_EVENT_TYPE + 4 * idx;
+ writel(type, hha_pmu->base + offset);
+ }
}
static void hisi_ddrc_pmu_v1_start_counters(struct hisi_pmu *ddrc_pmu)
@@ -142,6 +180,49 @@ static int hisi_ddrc_pmu_v1_get_event_idx(struct perf_event *event)
return idx;
}
+static int hisi_ddrc_pmu_v2_get_event_idx(struct perf_event *event)
+{
+ return hisi_uncore_pmu_get_event_idx(event);
+}
+
+static void hisi_ddrc_pmu_v2_start_counters(struct hisi_pmu *ddrc_pmu)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_PERF_CTRL);
+ val |= DDRC_V2_PERF_CTRL_EN;
+ writel(val, ddrc_pmu->base + DDRC_V2_PERF_CTRL);
+}
+
+static void hisi_ddrc_pmu_v2_stop_counters(struct hisi_pmu *ddrc_pmu)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_PERF_CTRL);
+ val &= ~DDRC_V2_PERF_CTRL_EN;
+ writel(val, ddrc_pmu->base + DDRC_V2_PERF_CTRL);
+}
+
+static void hisi_ddrc_pmu_v2_enable_counter(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_EVENT_CTRL);
+ val |= 1 << hwc->idx;
+ writel(val, ddrc_pmu->base + DDRC_V2_EVENT_CTRL);
+}
+
+static void hisi_ddrc_pmu_v2_disable_counter(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_EVENT_CTRL);
+ val &= ~(1 << hwc->idx);
+ writel(val, ddrc_pmu->base + DDRC_V2_EVENT_CTRL);
+}
+
static void hisi_ddrc_pmu_v1_enable_counter_int(struct hisi_pmu *ddrc_pmu,
struct hw_perf_event *hwc)
{
@@ -149,7 +230,7 @@ static void hisi_ddrc_pmu_v1_enable_counter_int(struct hisi_pmu *ddrc_pmu,
/* Write 0 to enable interrupt */
val = readl(ddrc_pmu->base + DDRC_INT_MASK);
- val &= ~(1 << GET_DDRC_EVENTID(hwc));
+ val &= ~(1 << hwc->idx);
writel(val, ddrc_pmu->base + DDRC_INT_MASK);
}
@@ -160,10 +241,30 @@ static void hisi_ddrc_pmu_v1_disable_counter_int(struct hisi_pmu *ddrc_pmu,
/* Write 1 to mask interrupt */
val = readl(ddrc_pmu->base + DDRC_INT_MASK);
- val |= (1 << GET_DDRC_EVENTID(hwc));
+ val |= 1 << hwc->idx;
writel(val, ddrc_pmu->base + DDRC_INT_MASK);
}
+static void hisi_ddrc_pmu_v2_enable_counter_int(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_INT_MASK);
+ val &= ~(1 << hwc->idx);
+ writel(val, ddrc_pmu->base + DDRC_V2_INT_MASK);
+}
+
+static void hisi_ddrc_pmu_v2_disable_counter_int(struct hisi_pmu *ddrc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(ddrc_pmu->base + DDRC_V2_INT_MASK);
+ val |= 1 << hwc->idx;
+ writel(val, ddrc_pmu->base + DDRC_V2_INT_MASK);
+}
+
static u32 hisi_ddrc_pmu_v1_get_int_status(struct hisi_pmu *ddrc_pmu)
{
return readl(ddrc_pmu->base + DDRC_INT_STATUS);
@@ -175,9 +276,21 @@ static void hisi_ddrc_pmu_v1_clear_int_status(struct hisi_pmu *ddrc_pmu,
writel(1 << idx, ddrc_pmu->base + DDRC_INT_CLEAR);
}
+static u32 hisi_ddrc_pmu_v2_get_int_status(struct hisi_pmu *ddrc_pmu)
+{
+ return readl(ddrc_pmu->base + DDRC_V2_INT_STATUS);
+}
+
+static void hisi_ddrc_pmu_v2_clear_int_status(struct hisi_pmu *ddrc_pmu,
+ int idx)
+{
+ writel(1 << idx, ddrc_pmu->base + DDRC_V2_INT_CLEAR);
+}
+
static const struct acpi_device_id hisi_ddrc_pmu_acpi_match[] = {
{ "HISI0233", },
- {},
+ { "HISI0234", },
+ {}
};
MODULE_DEVICE_TABLE(acpi, hisi_ddrc_pmu_acpi_match);
@@ -209,6 +322,13 @@ static int hisi_ddrc_pmu_init_data(struct platform_device *pdev,
}
ddrc_pmu->identifier = readl(ddrc_pmu->base + DDRC_VERSION);
+ if (ddrc_pmu->identifier >= HISI_PMU_V2) {
+ if (device_property_read_u32(&pdev->dev, "hisilicon,sub-id",
+ &ddrc_pmu->sub_id)) {
+ dev_err(&pdev->dev, "Can not read sub-id!\n");
+ return -EINVAL;
+ }
+ }
return 0;
}
@@ -223,6 +343,16 @@ static const struct attribute_group hisi_ddrc_pmu_v1_format_group = {
.attrs = hisi_ddrc_pmu_v1_format_attr,
};
+static struct attribute *hisi_ddrc_pmu_v2_format_attr[] = {
+ HISI_PMU_FORMAT_ATTR(event, "config:0-7"),
+ NULL
+};
+
+static const struct attribute_group hisi_ddrc_pmu_v2_format_group = {
+ .name = "format",
+ .attrs = hisi_ddrc_pmu_v2_format_attr,
+};
+
static struct attribute *hisi_ddrc_pmu_v1_events_attr[] = {
HISI_PMU_EVENT_ATTR(flux_wr, 0x00),
HISI_PMU_EVENT_ATTR(flux_rd, 0x01),
@@ -240,6 +370,18 @@ static const struct attribute_group hisi_ddrc_pmu_v1_events_group = {
.attrs = hisi_ddrc_pmu_v1_events_attr,
};
+static struct attribute *hisi_ddrc_pmu_v2_events_attr[] = {
+ HISI_PMU_EVENT_ATTR(clocks, 0x00),
+ HISI_PMU_EVENT_ATTR(flux_wr, 0x83),
+ HISI_PMU_EVENT_ATTR(flux_rd, 0x84),
+ NULL
+};
+
+static const struct attribute_group hisi_ddrc_pmu_v2_events_group = {
+ .name = "events",
+ .attrs = hisi_ddrc_pmu_v2_events_attr,
+};
+
static DEVICE_ATTR(cpumask, 0444, hisi_cpumask_sysfs_show, NULL);
static struct attribute *hisi_ddrc_pmu_cpumask_attrs[] = {
@@ -271,6 +413,14 @@ static const struct attribute_group *hisi_ddrc_pmu_v1_attr_groups[] = {
NULL,
};
+static const struct attribute_group *hisi_ddrc_pmu_v2_attr_groups[] = {
+ &hisi_ddrc_pmu_v2_format_group,
+ &hisi_ddrc_pmu_v2_events_group,
+ &hisi_ddrc_pmu_cpumask_attr_group,
+ &hisi_ddrc_pmu_identifier_group,
+ NULL
+};
+
static const struct hisi_uncore_ops hisi_uncore_ddrc_v1_ops = {
.write_evtype = hisi_ddrc_pmu_write_evtype,
.get_event_idx = hisi_ddrc_pmu_v1_get_event_idx,
@@ -286,6 +436,21 @@ static const struct hisi_uncore_ops hisi_uncore_ddrc_v1_ops = {
.clear_int_status = hisi_ddrc_pmu_v1_clear_int_status,
};
+static const struct hisi_uncore_ops hisi_uncore_ddrc_v2_ops = {
+ .write_evtype = hisi_ddrc_pmu_write_evtype,
+ .get_event_idx = hisi_ddrc_pmu_v2_get_event_idx,
+ .start_counters = hisi_ddrc_pmu_v2_start_counters,
+ .stop_counters = hisi_ddrc_pmu_v2_stop_counters,
+ .enable_counter = hisi_ddrc_pmu_v2_enable_counter,
+ .disable_counter = hisi_ddrc_pmu_v2_disable_counter,
+ .enable_counter_int = hisi_ddrc_pmu_v2_enable_counter_int,
+ .disable_counter_int = hisi_ddrc_pmu_v2_disable_counter_int,
+ .write_counter = hisi_ddrc_pmu_v2_write_counter,
+ .read_counter = hisi_ddrc_pmu_v2_read_counter,
+ .get_int_status = hisi_ddrc_pmu_v2_get_int_status,
+ .clear_int_status = hisi_ddrc_pmu_v2_clear_int_status,
+};
+
static int hisi_ddrc_pmu_dev_probe(struct platform_device *pdev,
struct hisi_pmu *ddrc_pmu)
{
@@ -299,12 +464,21 @@ static int hisi_ddrc_pmu_dev_probe(struct platform_device *pdev,
if (ret)
return ret;
+ if (ddrc_pmu->identifier >= HISI_PMU_V2) {
+ ddrc_pmu->counter_bits = 48;
+ ddrc_pmu->check_event = DDRC_V2_NR_EVENTS;
+ ddrc_pmu->pmu_events.attr_groups = hisi_ddrc_pmu_v2_attr_groups;
+ ddrc_pmu->ops = &hisi_uncore_ddrc_v2_ops;
+ } else {
+ ddrc_pmu->counter_bits = 32;
+ ddrc_pmu->check_event = DDRC_V1_NR_EVENTS;
+ ddrc_pmu->pmu_events.attr_groups = hisi_ddrc_pmu_v1_attr_groups;
+ ddrc_pmu->ops = &hisi_uncore_ddrc_v1_ops;
+ }
+
ddrc_pmu->num_counters = DDRC_NR_COUNTERS;
- ddrc_pmu->counter_bits = 32;
- ddrc_pmu->ops = &hisi_uncore_ddrc_v1_ops;
ddrc_pmu->dev = &pdev->dev;
ddrc_pmu->on_cpu = -1;
- ddrc_pmu->check_event = DDRC_V1_NR_EVENTS;
return 0;
}
@@ -332,8 +506,16 @@ static int hisi_ddrc_pmu_probe(struct platform_device *pdev)
return ret;
}
- name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%u_ddrc%u",
- ddrc_pmu->sccl_id, ddrc_pmu->index_id);
+ if (ddrc_pmu->identifier >= HISI_PMU_V2)
+ name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "hisi_sccl%u_ddrc%u_%u",
+ ddrc_pmu->sccl_id, ddrc_pmu->index_id,
+ ddrc_pmu->sub_id);
+ else
+ name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "hisi_sccl%u_ddrc%u", ddrc_pmu->sccl_id,
+ ddrc_pmu->index_id);
+
ddrc_pmu->pmu = (struct pmu) {
.name = name,
.module = THIS_MODULE,
@@ -346,7 +528,7 @@ static int hisi_ddrc_pmu_probe(struct platform_device *pdev)
.start = hisi_uncore_pmu_start,
.stop = hisi_uncore_pmu_stop,
.read = hisi_uncore_pmu_read,
- .attr_groups = hisi_ddrc_pmu_v1_attr_groups,
+ .attr_groups = ddrc_pmu->pmu_events.attr_groups,
.capabilities = PERF_PMU_CAP_NO_EXCLUDE,
};
@@ -85,6 +85,8 @@ struct hisi_pmu {
void __iomem *base;
/* the ID of the PMU modules */
u32 index_id;
+ /* For DDRC PMU v2: each DDRC has more than one DMC */
+ u32 sub_id;
int num_counters;
int counter_bits;
/* check event code range */