* [PATCH v5 1/3] drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver
2023-06-15 12:59 [PATCH v5 0/3] Add support for HiSilicon SoC uncore PMU Junhao He
@ 2023-06-15 12:59 ` Junhao He
2023-06-16 10:43 ` Mark Rutland
2023-06-15 12:59 ` [PATCH v5 2/3] drivers/perf: hisi: Add support for HiSilicon UC " Junhao He
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Junhao He @ 2023-06-15 12:59 UTC (permalink / raw)
To: will, jonathan.cameron, linux-kernel, mark.rutland
Cc: linux-arm-kernel, linux-doc, linuxarm, yangyicong, shenyang39,
prime.zeng, hejunhao3
Compared to the original PA device, H60PA offers higher bandwidth.
The H60PA is a new device and we use HID to differentiate them.
The events supported by PAv3 and PAv2 are different. The PAv3 PMU
removed some events which are supported by PAv2 PMU. The older PA
PMU driver will probe v3 as v2. Therefore PA events displayed by
"perf list" cannot work properly. We add the HISI0275 HID for PAv3
PMU to distinguish different.
For each H60PA PMU, except for the overflow interrupt register, other
functions of the H60PA PMU are the same as the original PA PMU module.
It has 8-programable counters and each counter is free-running.
Interrupt is supported to handle counter (64-bits) overflow.
Signed-off-by: Junhao He <hejunhao3@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
---
drivers/perf/hisilicon/hisi_uncore_pa_pmu.c | 127 +++++++++++++++++---
drivers/perf/hisilicon/hisi_uncore_pmu.h | 8 ++
2 files changed, 120 insertions(+), 15 deletions(-)
diff --git a/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c
index 71b6687d6696..d941e746b424 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c
@@ -22,9 +22,15 @@
#define PA_TT_CTRL 0x1c08
#define PA_TGTID_CTRL 0x1c14
#define PA_SRCID_CTRL 0x1c18
+
+/* H32 PA interrupt registers */
#define PA_INT_MASK 0x1c70
#define PA_INT_STATUS 0x1c78
#define PA_INT_CLEAR 0x1c7c
+
+#define H60PA_INT_STATUS 0x1c70
+#define H60PA_INT_MASK 0x1c74
+
#define PA_EVENT_TYPE0 0x1c80
#define PA_PMU_VERSION 0x1cf0
#define PA_EVENT_CNT0_L 0x1d00
@@ -46,6 +52,12 @@ HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_cmd, config1, 32, 22);
HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_msk, config1, 43, 33);
HISI_PMU_EVENT_ATTR_EXTRACTOR(tracetag_en, config1, 44, 44);
+struct hisi_pa_pmu_int_regs {
+ u32 mask_offset;
+ u32 clear_offset;
+ u32 status_offset;
+};
+
static void hisi_pa_pmu_enable_tracetag(struct perf_event *event)
{
struct hisi_pmu *pa_pmu = to_hisi_pmu(event->pmu);
@@ -219,40 +231,40 @@ static void hisi_pa_pmu_disable_counter(struct hisi_pmu *pa_pmu,
static void hisi_pa_pmu_enable_counter_int(struct hisi_pmu *pa_pmu,
struct hw_perf_event *hwc)
{
+ struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->private;
u32 val;
/* Write 0 to enable interrupt */
- val = readl(pa_pmu->base + PA_INT_MASK);
+ val = readl(pa_pmu->base + regs->mask_offset);
val &= ~(1 << hwc->idx);
- writel(val, pa_pmu->base + PA_INT_MASK);
+ writel(val, pa_pmu->base + regs->mask_offset);
}
static void hisi_pa_pmu_disable_counter_int(struct hisi_pmu *pa_pmu,
struct hw_perf_event *hwc)
{
+ struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->private;
u32 val;
/* Write 1 to mask interrupt */
- val = readl(pa_pmu->base + PA_INT_MASK);
+ val = readl(pa_pmu->base + regs->mask_offset);
val |= 1 << hwc->idx;
- writel(val, pa_pmu->base + PA_INT_MASK);
+ writel(val, pa_pmu->base + regs->mask_offset);
}
static u32 hisi_pa_pmu_get_int_status(struct hisi_pmu *pa_pmu)
{
- return readl(pa_pmu->base + PA_INT_STATUS);
+ struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->private;
+
+ return readl(pa_pmu->base + regs->status_offset);
}
static void hisi_pa_pmu_clear_int_status(struct hisi_pmu *pa_pmu, int idx)
{
- writel(1 << idx, pa_pmu->base + PA_INT_CLEAR);
-}
+ struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->private;
-static const struct acpi_device_id hisi_pa_pmu_acpi_match[] = {
- { "HISI0273", },
- {}
-};
-MODULE_DEVICE_TABLE(acpi, hisi_pa_pmu_acpi_match);
+ writel(1 << idx, pa_pmu->base + regs->clear_offset);
+}
static int hisi_pa_pmu_init_data(struct platform_device *pdev,
struct hisi_pmu *pa_pmu)
@@ -276,6 +288,10 @@ static int hisi_pa_pmu_init_data(struct platform_device *pdev,
pa_pmu->ccl_id = -1;
pa_pmu->sccl_id = -1;
+ pa_pmu->dev_info = device_get_match_data(&pdev->dev);
+ if (!pa_pmu->dev_info)
+ return -ENODEV;
+
pa_pmu->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pa_pmu->base)) {
dev_err(&pdev->dev, "ioremap failed for pa_pmu resource.\n");
@@ -314,6 +330,32 @@ static const struct attribute_group hisi_pa_pmu_v2_events_group = {
.attrs = hisi_pa_pmu_v2_events_attr,
};
+static struct attribute *hisi_pa_pmu_v3_events_attr[] = {
+ HISI_PMU_EVENT_ATTR(tx_req, 0x0),
+ HISI_PMU_EVENT_ATTR(tx_dat, 0x1),
+ HISI_PMU_EVENT_ATTR(tx_snp, 0x2),
+ HISI_PMU_EVENT_ATTR(rx_req, 0x7),
+ HISI_PMU_EVENT_ATTR(rx_dat, 0x8),
+ HISI_PMU_EVENT_ATTR(rx_snp, 0x9),
+ NULL
+};
+
+static const struct attribute_group hisi_pa_pmu_v3_events_group = {
+ .name = "events",
+ .attrs = hisi_pa_pmu_v3_events_attr,
+};
+
+static struct attribute *hisi_h60pa_pmu_events_attr[] = {
+ HISI_PMU_EVENT_ATTR(rx_flit, 0x50),
+ HISI_PMU_EVENT_ATTR(tx_flit, 0x65),
+ NULL
+};
+
+static const struct attribute_group hisi_h60pa_pmu_events_group = {
+ .name = "events",
+ .attrs = hisi_h60pa_pmu_events_attr,
+};
+
static DEVICE_ATTR(cpumask, 0444, hisi_cpumask_sysfs_show, NULL);
static struct attribute *hisi_pa_pmu_cpumask_attrs[] = {
@@ -337,6 +379,12 @@ static const struct attribute_group hisi_pa_pmu_identifier_group = {
.attrs = hisi_pa_pmu_identifier_attrs,
};
+static struct hisi_pa_pmu_int_regs hisi_pa_pmu_regs = {
+ .mask_offset = PA_INT_MASK,
+ .clear_offset = PA_INT_CLEAR,
+ .status_offset = PA_INT_STATUS,
+};
+
static const struct attribute_group *hisi_pa_pmu_v2_attr_groups[] = {
&hisi_pa_pmu_v2_format_group,
&hisi_pa_pmu_v2_events_group,
@@ -345,6 +393,46 @@ static const struct attribute_group *hisi_pa_pmu_v2_attr_groups[] = {
NULL
};
+static const struct hisi_pmu_dev_info hisi_h32pa_v2 = {
+ .name = "pa",
+ .attr_groups = hisi_pa_pmu_v2_attr_groups,
+ .private = &hisi_pa_pmu_regs,
+};
+
+static const struct attribute_group *hisi_pa_pmu_v3_attr_groups[] = {
+ &hisi_pa_pmu_v2_format_group,
+ &hisi_pa_pmu_v3_events_group,
+ &hisi_pa_pmu_cpumask_attr_group,
+ &hisi_pa_pmu_identifier_group,
+ NULL
+};
+
+static const struct hisi_pmu_dev_info hisi_h32pa_v3 = {
+ .name = "pa",
+ .attr_groups = hisi_pa_pmu_v3_attr_groups,
+ .private = &hisi_pa_pmu_regs,
+};
+
+static struct hisi_pa_pmu_int_regs hisi_h60pa_pmu_regs = {
+ .mask_offset = H60PA_INT_MASK,
+ .clear_offset = H60PA_INT_STATUS, /* Clear on write */
+ .status_offset = H60PA_INT_STATUS,
+};
+
+static const struct attribute_group *hisi_h60pa_pmu_attr_groups[] = {
+ &hisi_pa_pmu_v2_format_group,
+ &hisi_h60pa_pmu_events_group,
+ &hisi_pa_pmu_cpumask_attr_group,
+ &hisi_pa_pmu_identifier_group,
+ NULL
+};
+
+static const struct hisi_pmu_dev_info hisi_h60pa = {
+ .name = "h60pa",
+ .attr_groups = hisi_h60pa_pmu_attr_groups,
+ .private = &hisi_h60pa_pmu_regs,
+};
+
static const struct hisi_uncore_ops hisi_uncore_pa_ops = {
.write_evtype = hisi_pa_pmu_write_evtype,
.get_event_idx = hisi_uncore_pmu_get_event_idx,
@@ -375,7 +463,7 @@ static int hisi_pa_pmu_dev_probe(struct platform_device *pdev,
if (ret)
return ret;
- pa_pmu->pmu_events.attr_groups = hisi_pa_pmu_v2_attr_groups;
+ pa_pmu->pmu_events.attr_groups = pa_pmu->dev_info->attr_groups;
pa_pmu->num_counters = PA_NR_COUNTERS;
pa_pmu->ops = &hisi_uncore_pa_ops;
pa_pmu->check_event = 0xB0;
@@ -400,8 +488,9 @@ static int hisi_pa_pmu_probe(struct platform_device *pdev)
if (ret)
return ret;
- name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sicl%u_pa%u",
- pa_pmu->sicl_id, pa_pmu->index_id);
+ name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sicl%d_%s%u",
+ pa_pmu->sicl_id, pa_pmu->dev_info->name,
+ pa_pmu->index_id);
if (!name)
return -ENOMEM;
@@ -435,6 +524,14 @@ static int hisi_pa_pmu_remove(struct platform_device *pdev)
return 0;
}
+static const struct acpi_device_id hisi_pa_pmu_acpi_match[] = {
+ { "HISI0273", (kernel_ulong_t)&hisi_h32pa_v2 },
+ { "HISI0275", (kernel_ulong_t)&hisi_h32pa_v3 },
+ { "HISI0274", (kernel_ulong_t)&hisi_h60pa },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, hisi_pa_pmu_acpi_match);
+
static struct platform_driver hisi_pa_pmu_driver = {
.driver = {
.name = "hisi_pa_pmu",
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h
index 07890a8e96ca..772857b99dc5 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.h
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h
@@ -62,6 +62,13 @@ struct hisi_uncore_ops {
void (*disable_filter)(struct perf_event *event);
};
+/* Describes the HISI PMU chip features information */
+struct hisi_pmu_dev_info {
+ const char *name;
+ const struct attribute_group **attr_groups;
+ void *private;
+};
+
struct hisi_pmu_hwevents {
struct perf_event *hw_events[HISI_MAX_COUNTERS];
DECLARE_BITMAP(used_mask, HISI_MAX_COUNTERS);
@@ -72,6 +79,7 @@ struct hisi_pmu_hwevents {
struct hisi_pmu {
struct pmu pmu;
const struct hisi_uncore_ops *ops;
+ const struct hisi_pmu_dev_info *dev_info;
struct hisi_pmu_hwevents pmu_events;
/* associated_cpus: All CPUs associated with the PMU */
cpumask_t associated_cpus;
--
2.33.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v5 2/3] drivers/perf: hisi: Add support for HiSilicon UC PMU driver
2023-06-15 12:59 [PATCH v5 0/3] Add support for HiSilicon SoC uncore PMU Junhao He
2023-06-15 12:59 ` [PATCH v5 1/3] drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver Junhao He
@ 2023-06-15 12:59 ` Junhao He
2023-06-15 12:59 ` [PATCH v5 3/3] docs: perf: Add new description for HiSilicon UC PMU Junhao He
2023-06-16 11:59 ` [PATCH v5 0/3] Add support for HiSilicon SoC uncore PMU Will Deacon
3 siblings, 0 replies; 6+ messages in thread
From: Junhao He @ 2023-06-15 12:59 UTC (permalink / raw)
To: will, jonathan.cameron, linux-kernel, mark.rutland
Cc: linux-arm-kernel, linux-doc, linuxarm, yangyicong, shenyang39,
prime.zeng, hejunhao3
On HiSilicon Hip09 platform, there are 4 UC (unified cache) modules
on each chip CCL (CPU Cluster). UC is a cache that provides
coherence between NUMA and UMA domains. It is located between L2
and Memory System. Many PMU events are supported. Let's support
the UC PMU driver using the HiSilicon uncore PMU framework.
* rd_req_en : rd_req_en is the abbreviation of read request tracetag
enable and allows user to count only read operations. Details are listed
in the hisi-pmu document at Documentation/admin-guide/perf/hisi-pmu.rst
* srcid_en & srcid: Allows users to filter statistical information based
on specific CPU/ICL by srcid.
srcid_en depends on rd_req_en being enabled.
* uring_channel: Allows users to filter statistical information based on
the specified tx request uring channel.
uring_channel only supported events: [0x47 ~ 0x59].
Signed-off-by: Junhao He <hejunhao3@huawei.com>
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
---
drivers/perf/hisilicon/Makefile | 2 +-
drivers/perf/hisilicon/hisi_uncore_pmu.c | 4 +-
drivers/perf/hisilicon/hisi_uncore_pmu.h | 6 +
drivers/perf/hisilicon/hisi_uncore_uc_pmu.c | 578 ++++++++++++++++++++
4 files changed, 588 insertions(+), 2 deletions(-)
create mode 100644 drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
diff --git a/drivers/perf/hisilicon/Makefile b/drivers/perf/hisilicon/Makefile
index 4d2c9abe3372..48dcc8381ea7 100644
--- a/drivers/perf/hisilicon/Makefile
+++ b/drivers/perf/hisilicon/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_HISI_PMU) += hisi_uncore_pmu.o hisi_uncore_l3c_pmu.o \
hisi_uncore_hha_pmu.o hisi_uncore_ddrc_pmu.o hisi_uncore_sllc_pmu.o \
- hisi_uncore_pa_pmu.o hisi_uncore_cpa_pmu.o
+ hisi_uncore_pa_pmu.o hisi_uncore_cpa_pmu.o hisi_uncore_uc_pmu.o
obj-$(CONFIG_HISI_PCIE_PMU) += hisi_pcie_pmu.o
obj-$(CONFIG_HNS3_PMU) += hns3_pmu.o
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index 2823f381930d..04031450d5fe 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -20,7 +20,6 @@
#include "hisi_uncore_pmu.h"
-#define HISI_GET_EVENTID(ev) (ev->hw.config_base & 0xff)
#define HISI_MAX_PERIOD(nr) (GENMASK_ULL((nr) - 1, 0))
/*
@@ -226,6 +225,9 @@ int hisi_uncore_pmu_event_init(struct perf_event *event)
hwc->idx = -1;
hwc->config_base = event->attr.config;
+ if (hisi_pmu->ops->check_filter && hisi_pmu->ops->check_filter(event))
+ return -EINVAL;
+
/* Enforce to use the same CPU for all events in this PMU */
event->cpu = hisi_pmu->on_cpu;
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h
index 772857b99dc5..92402aa69d70 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.h
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h
@@ -43,9 +43,15 @@
return FIELD_GET(GENMASK_ULL(hi, lo), event->attr.config); \
}
+#define HISI_GET_EVENTID(ev) (ev->hw.config_base & 0xff)
+
+#define HISI_PMU_EVTYPE_BITS 8
+#define HISI_PMU_EVTYPE_SHIFT(idx) ((idx) % 4 * HISI_PMU_EVTYPE_BITS)
+
struct hisi_pmu;
struct hisi_uncore_ops {
+ int (*check_filter)(struct perf_event *event);
void (*write_evtype)(struct hisi_pmu *, int, u32);
int (*get_event_idx)(struct perf_event *);
u64 (*read_counter)(struct hisi_pmu *, struct hw_perf_event *);
diff --git a/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
new file mode 100644
index 000000000000..63da05e5831c
--- /dev/null
+++ b/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
@@ -0,0 +1,578 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HiSilicon SoC UC (unified cache) uncore Hardware event counters support
+ *
+ * Copyright (C) 2023 HiSilicon Limited
+ *
+ * This code is based on the uncore PMUs like hisi_uncore_l3c_pmu.
+ */
+#include <linux/cpuhotplug.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/list.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+
+#include "hisi_uncore_pmu.h"
+
+/* Dynamic CPU hotplug state used by UC PMU */
+static enum cpuhp_state hisi_uc_pmu_online;
+
+/* UC register definition */
+#define HISI_UC_INT_MASK_REG 0x0800
+#define HISI_UC_INT_STS_REG 0x0808
+#define HISI_UC_INT_CLEAR_REG 0x080c
+#define HISI_UC_TRACETAG_CTRL_REG 0x1b2c
+#define HISI_UC_TRACETAG_REQ_MSK GENMASK(9, 7)
+#define HISI_UC_TRACETAG_MARK_EN BIT(0)
+#define HISI_UC_TRACETAG_REQ_EN (HISI_UC_TRACETAG_MARK_EN | BIT(2))
+#define HISI_UC_TRACETAG_SRCID_EN BIT(3)
+#define HISI_UC_SRCID_CTRL_REG 0x1b40
+#define HISI_UC_SRCID_MSK GENMASK(14, 1)
+#define HISI_UC_EVENT_CTRL_REG 0x1c00
+#define HISI_UC_EVENT_TRACETAG_EN BIT(29)
+#define HISI_UC_EVENT_URING_MSK GENMASK(28, 27)
+#define HISI_UC_EVENT_GLB_EN BIT(26)
+#define HISI_UC_VERSION_REG 0x1cf0
+#define HISI_UC_EVTYPE_REGn(n) (0x1d00 + (n) * 4)
+#define HISI_UC_EVTYPE_MASK GENMASK(7, 0)
+#define HISI_UC_CNTR_REGn(n) (0x1e00 + (n) * 8)
+
+#define HISI_UC_NR_COUNTERS 0x8
+#define HISI_UC_V2_NR_EVENTS 0xFF
+#define HISI_UC_CNTR_REG_BITS 64
+
+#define HISI_UC_RD_REQ_TRACETAG 0x4
+#define HISI_UC_URING_EVENT_MIN 0x47
+#define HISI_UC_URING_EVENT_MAX 0x59
+
+HISI_PMU_EVENT_ATTR_EXTRACTOR(rd_req_en, config1, 0, 0);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(uring_channel, config1, 5, 4);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid, config1, 19, 6);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_en, config1, 20, 20);
+
+static int hisi_uc_pmu_check_filter(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+
+ if (hisi_get_srcid_en(event) && !hisi_get_rd_req_en(event)) {
+ dev_err(uc_pmu->dev,
+ "rcid_en depends on rd_req_en being enabled!\n");
+ return -EINVAL;
+ }
+
+ if (!hisi_get_uring_channel(event))
+ return 0;
+
+ if ((HISI_GET_EVENTID(event) < HISI_UC_URING_EVENT_MIN) ||
+ (HISI_GET_EVENTID(event) > HISI_UC_URING_EVENT_MAX))
+ dev_warn(uc_pmu->dev,
+ "Only events: [%#x ~ %#x] support channel filtering!",
+ HISI_UC_URING_EVENT_MIN, HISI_UC_URING_EVENT_MAX);
+
+ return 0;
+}
+
+static void hisi_uc_pmu_config_req_tracetag(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 val;
+
+ if (!hisi_get_rd_req_en(event))
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ /* The request-type has been configured */
+ if (FIELD_GET(HISI_UC_TRACETAG_REQ_MSK, val) == HISI_UC_RD_REQ_TRACETAG)
+ return;
+
+ /* Set request-type for tracetag, only read request is supported! */
+ val &= ~HISI_UC_TRACETAG_REQ_MSK;
+ val |= FIELD_PREP(HISI_UC_TRACETAG_REQ_MSK, HISI_UC_RD_REQ_TRACETAG);
+ val |= HISI_UC_TRACETAG_REQ_EN;
+ writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+}
+
+static void hisi_uc_pmu_clear_req_tracetag(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 val;
+
+ if (!hisi_get_rd_req_en(event))
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ /* Do nothing, the request-type tracetag has been cleaned up */
+ if (FIELD_GET(HISI_UC_TRACETAG_REQ_MSK, val) == 0)
+ return;
+
+ /* Clear request-type */
+ val &= ~HISI_UC_TRACETAG_REQ_MSK;
+ val &= ~HISI_UC_TRACETAG_REQ_EN;
+ writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+}
+
+static void hisi_uc_pmu_config_srcid_tracetag(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 val;
+
+ if (!hisi_get_srcid_en(event))
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ /* Do nothing, the source id has been configured */
+ if (FIELD_GET(HISI_UC_TRACETAG_SRCID_EN, val))
+ return;
+
+ /* Enable source id tracetag */
+ val |= HISI_UC_TRACETAG_SRCID_EN;
+ writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ val = readl(uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+ val &= ~HISI_UC_SRCID_MSK;
+ val |= FIELD_PREP(HISI_UC_SRCID_MSK, hisi_get_srcid(event));
+ writel(val, uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+
+ /* Depend on request-type tracetag enabled */
+ hisi_uc_pmu_config_req_tracetag(event);
+}
+
+static void hisi_uc_pmu_clear_srcid_tracetag(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 val;
+
+ if (!hisi_get_srcid_en(event))
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ /* Do nothing, the source id has been cleaned up */
+ if (FIELD_GET(HISI_UC_TRACETAG_SRCID_EN, val) == 0)
+ return;
+
+ hisi_uc_pmu_clear_req_tracetag(event);
+
+ /* Disable source id tracetag */
+ val &= ~HISI_UC_TRACETAG_SRCID_EN;
+ writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+ val = readl(uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+ val &= ~HISI_UC_SRCID_MSK;
+ writel(val, uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+}
+
+static void hisi_uc_pmu_config_uring_channel(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 uring_channel = hisi_get_uring_channel(event);
+ u32 val;
+
+ /* Do nothing if not being set or is set explicitly to zero (default) */
+ if (uring_channel == 0)
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+
+ /* Do nothing, the uring_channel has been configured */
+ if (uring_channel == FIELD_GET(HISI_UC_EVENT_URING_MSK, val))
+ return;
+
+ val &= ~HISI_UC_EVENT_URING_MSK;
+ val |= FIELD_PREP(HISI_UC_EVENT_URING_MSK, uring_channel);
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_clear_uring_channel(struct perf_event *event)
+{
+ struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+ u32 val;
+
+ /* Do nothing if not being set or is set explicitly to zero (default) */
+ if (hisi_get_uring_channel(event) == 0)
+ return;
+
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+
+ /* Do nothing, the uring_channel has been cleaned up */
+ if (FIELD_GET(HISI_UC_EVENT_URING_MSK, val) == 0)
+ return;
+
+ val &= ~HISI_UC_EVENT_URING_MSK;
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_enable_filter(struct perf_event *event)
+{
+ if (event->attr.config1 == 0)
+ return;
+
+ hisi_uc_pmu_config_uring_channel(event);
+ hisi_uc_pmu_config_req_tracetag(event);
+ hisi_uc_pmu_config_srcid_tracetag(event);
+}
+
+static void hisi_uc_pmu_disable_filter(struct perf_event *event)
+{
+ if (event->attr.config1 == 0)
+ return;
+
+ hisi_uc_pmu_clear_srcid_tracetag(event);
+ hisi_uc_pmu_clear_req_tracetag(event);
+ hisi_uc_pmu_clear_uring_channel(event);
+}
+
+static void hisi_uc_pmu_write_evtype(struct hisi_pmu *uc_pmu, int idx, u32 type)
+{
+ u32 val;
+
+ /*
+ * Select the appropriate event select register.
+ * There are 2 32-bit event select registers for the
+ * 8 hardware counters, each event code is 8-bit wide.
+ */
+ val = readl(uc_pmu->base + HISI_UC_EVTYPE_REGn(idx / 4));
+ val &= ~(HISI_UC_EVTYPE_MASK << HISI_PMU_EVTYPE_SHIFT(idx));
+ val |= (type << HISI_PMU_EVTYPE_SHIFT(idx));
+ writel(val, uc_pmu->base + HISI_UC_EVTYPE_REGn(idx / 4));
+}
+
+static void hisi_uc_pmu_start_counters(struct hisi_pmu *uc_pmu)
+{
+ u32 val;
+
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+ val |= HISI_UC_EVENT_GLB_EN;
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_stop_counters(struct hisi_pmu *uc_pmu)
+{
+ u32 val;
+
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+ val &= ~HISI_UC_EVENT_GLB_EN;
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_enable_counter(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ /* Enable counter index */
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+ val |= (1 << hwc->idx);
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_disable_counter(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ /* Clear counter index */
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+ val &= ~(1 << hwc->idx);
+ writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static u64 hisi_uc_pmu_read_counter(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc)
+{
+ return readq(uc_pmu->base + HISI_UC_CNTR_REGn(hwc->idx));
+}
+
+static void hisi_uc_pmu_write_counter(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc, u64 val)
+{
+ writeq(val, uc_pmu->base + HISI_UC_CNTR_REGn(hwc->idx));
+}
+
+static void hisi_uc_pmu_enable_counter_int(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(uc_pmu->base + HISI_UC_INT_MASK_REG);
+ val &= ~(1 << hwc->idx);
+ writel(val, uc_pmu->base + HISI_UC_INT_MASK_REG);
+}
+
+static void hisi_uc_pmu_disable_counter_int(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc)
+{
+ u32 val;
+
+ val = readl(uc_pmu->base + HISI_UC_INT_MASK_REG);
+ val |= (1 << hwc->idx);
+ writel(val, uc_pmu->base + HISI_UC_INT_MASK_REG);
+}
+
+static u32 hisi_uc_pmu_get_int_status(struct hisi_pmu *uc_pmu)
+{
+ return readl(uc_pmu->base + HISI_UC_INT_STS_REG);
+}
+
+static void hisi_uc_pmu_clear_int_status(struct hisi_pmu *uc_pmu, int idx)
+{
+ writel(1 << idx, uc_pmu->base + HISI_UC_INT_CLEAR_REG);
+}
+
+static int hisi_uc_pmu_init_data(struct platform_device *pdev,
+ struct hisi_pmu *uc_pmu)
+{
+ /*
+ * Use SCCL (Super CPU Cluster) ID and CCL (CPU Cluster) ID to
+ * identify the topology information of UC PMU devices in the chip.
+ * They have some CCLs per SCCL and then 4 UC PMU per CCL.
+ */
+ if (device_property_read_u32(&pdev->dev, "hisilicon,scl-id",
+ &uc_pmu->sccl_id)) {
+ dev_err(&pdev->dev, "Can not read uc sccl-id!\n");
+ return -EINVAL;
+ }
+
+ if (device_property_read_u32(&pdev->dev, "hisilicon,ccl-id",
+ &uc_pmu->ccl_id)) {
+ dev_err(&pdev->dev, "Can not read uc ccl-id!\n");
+ return -EINVAL;
+ }
+
+ if (device_property_read_u32(&pdev->dev, "hisilicon,sub-id",
+ &uc_pmu->sub_id)) {
+ dev_err(&pdev->dev, "Can not read sub-id!\n");
+ return -EINVAL;
+ }
+
+ uc_pmu->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(uc_pmu->base)) {
+ dev_err(&pdev->dev, "ioremap failed for uc_pmu resource\n");
+ return PTR_ERR(uc_pmu->base);
+ }
+
+ uc_pmu->identifier = readl(uc_pmu->base + HISI_UC_VERSION_REG);
+
+ return 0;
+}
+
+static struct attribute *hisi_uc_pmu_format_attr[] = {
+ HISI_PMU_FORMAT_ATTR(event, "config:0-7"),
+ HISI_PMU_FORMAT_ATTR(rd_req_en, "config1:0-0"),
+ HISI_PMU_FORMAT_ATTR(uring_channel, "config1:4-5"),
+ HISI_PMU_FORMAT_ATTR(srcid, "config1:6-19"),
+ HISI_PMU_FORMAT_ATTR(srcid_en, "config1:20-20"),
+ NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_format_group = {
+ .name = "format",
+ .attrs = hisi_uc_pmu_format_attr,
+};
+
+static struct attribute *hisi_uc_pmu_events_attr[] = {
+ HISI_PMU_EVENT_ATTR(sq_time, 0x00),
+ HISI_PMU_EVENT_ATTR(pq_time, 0x01),
+ HISI_PMU_EVENT_ATTR(hbm_time, 0x02),
+ HISI_PMU_EVENT_ATTR(iq_comp_time_cring, 0x03),
+ HISI_PMU_EVENT_ATTR(iq_comp_time_uring, 0x05),
+ HISI_PMU_EVENT_ATTR(cpu_rd, 0x10),
+ HISI_PMU_EVENT_ATTR(cpu_rd64, 0x17),
+ HISI_PMU_EVENT_ATTR(cpu_rs64, 0x19),
+ HISI_PMU_EVENT_ATTR(cpu_mru, 0x1a),
+ HISI_PMU_EVENT_ATTR(cycles, 0x9c),
+ HISI_PMU_EVENT_ATTR(spipe_hit, 0xb3),
+ HISI_PMU_EVENT_ATTR(hpipe_hit, 0xdb),
+ HISI_PMU_EVENT_ATTR(cring_rxdat_cnt, 0xfa),
+ HISI_PMU_EVENT_ATTR(cring_txdat_cnt, 0xfb),
+ HISI_PMU_EVENT_ATTR(uring_rxdat_cnt, 0xfc),
+ HISI_PMU_EVENT_ATTR(uring_txdat_cnt, 0xfd),
+ NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_events_group = {
+ .name = "events",
+ .attrs = hisi_uc_pmu_events_attr,
+};
+
+static DEVICE_ATTR(cpumask, 0444, hisi_cpumask_sysfs_show, NULL);
+
+static struct attribute *hisi_uc_pmu_cpumask_attrs[] = {
+ &dev_attr_cpumask.attr,
+ NULL,
+};
+
+static const struct attribute_group hisi_uc_pmu_cpumask_attr_group = {
+ .attrs = hisi_uc_pmu_cpumask_attrs,
+};
+
+static struct device_attribute hisi_uc_pmu_identifier_attr =
+ __ATTR(identifier, 0444, hisi_uncore_pmu_identifier_attr_show, NULL);
+
+static struct attribute *hisi_uc_pmu_identifier_attrs[] = {
+ &hisi_uc_pmu_identifier_attr.attr,
+ NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_identifier_group = {
+ .attrs = hisi_uc_pmu_identifier_attrs,
+};
+
+static const struct attribute_group *hisi_uc_pmu_attr_groups[] = {
+ &hisi_uc_pmu_format_group,
+ &hisi_uc_pmu_events_group,
+ &hisi_uc_pmu_cpumask_attr_group,
+ &hisi_uc_pmu_identifier_group,
+ NULL
+};
+
+static const struct hisi_uncore_ops hisi_uncore_uc_pmu_ops = {
+ .check_filter = hisi_uc_pmu_check_filter,
+ .write_evtype = hisi_uc_pmu_write_evtype,
+ .get_event_idx = hisi_uncore_pmu_get_event_idx,
+ .start_counters = hisi_uc_pmu_start_counters,
+ .stop_counters = hisi_uc_pmu_stop_counters,
+ .enable_counter = hisi_uc_pmu_enable_counter,
+ .disable_counter = hisi_uc_pmu_disable_counter,
+ .enable_counter_int = hisi_uc_pmu_enable_counter_int,
+ .disable_counter_int = hisi_uc_pmu_disable_counter_int,
+ .write_counter = hisi_uc_pmu_write_counter,
+ .read_counter = hisi_uc_pmu_read_counter,
+ .get_int_status = hisi_uc_pmu_get_int_status,
+ .clear_int_status = hisi_uc_pmu_clear_int_status,
+ .enable_filter = hisi_uc_pmu_enable_filter,
+ .disable_filter = hisi_uc_pmu_disable_filter,
+};
+
+static int hisi_uc_pmu_dev_probe(struct platform_device *pdev,
+ struct hisi_pmu *uc_pmu)
+{
+ int ret;
+
+ ret = hisi_uc_pmu_init_data(pdev, uc_pmu);
+ if (ret)
+ return ret;
+
+ ret = hisi_uncore_pmu_init_irq(uc_pmu, pdev);
+ if (ret)
+ return ret;
+
+ uc_pmu->pmu_events.attr_groups = hisi_uc_pmu_attr_groups;
+ uc_pmu->check_event = HISI_UC_EVTYPE_MASK;
+ uc_pmu->ops = &hisi_uncore_uc_pmu_ops;
+ uc_pmu->counter_bits = HISI_UC_CNTR_REG_BITS;
+ uc_pmu->num_counters = HISI_UC_NR_COUNTERS;
+ uc_pmu->dev = &pdev->dev;
+ uc_pmu->on_cpu = -1;
+
+ return 0;
+}
+
+static void hisi_uc_pmu_remove_cpuhp_instance(void *hotplug_node)
+{
+ cpuhp_state_remove_instance_nocalls(hisi_uc_pmu_online, hotplug_node);
+}
+
+static void hisi_uc_pmu_unregister_pmu(void *pmu)
+{
+ perf_pmu_unregister(pmu);
+}
+
+static int hisi_uc_pmu_probe(struct platform_device *pdev)
+{
+ struct hisi_pmu *uc_pmu;
+ char *name;
+ int ret;
+
+ uc_pmu = devm_kzalloc(&pdev->dev, sizeof(*uc_pmu), GFP_KERNEL);
+ if (!uc_pmu)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, uc_pmu);
+
+ ret = hisi_uc_pmu_dev_probe(pdev, uc_pmu);
+ if (ret)
+ return ret;
+
+ name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%d_uc%d_%u",
+ uc_pmu->sccl_id, uc_pmu->ccl_id, uc_pmu->sub_id);
+ if (!name)
+ return -ENOMEM;
+
+ ret = cpuhp_state_add_instance(hisi_uc_pmu_online, &uc_pmu->node);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "Error registering hotplug\n");
+
+ ret = devm_add_action_or_reset(&pdev->dev,
+ hisi_uc_pmu_remove_cpuhp_instance,
+ &uc_pmu->node);
+ if (ret)
+ return ret;
+
+ hisi_pmu_init(uc_pmu, THIS_MODULE);
+
+ ret = perf_pmu_register(&uc_pmu->pmu, name, -1);
+ if (ret)
+ return ret;
+
+ return devm_add_action_or_reset(&pdev->dev,
+ hisi_uc_pmu_unregister_pmu,
+ &uc_pmu->pmu);
+}
+
+static const struct acpi_device_id hisi_uc_pmu_acpi_match[] = {
+ { "HISI0291", },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, hisi_uc_pmu_acpi_match);
+
+static struct platform_driver hisi_uc_pmu_driver = {
+ .driver = {
+ .name = "hisi_uc_pmu",
+ .acpi_match_table = hisi_uc_pmu_acpi_match,
+ /*
+ * We have not worked out a safe bind/unbind process,
+ * Forcefully unbinding during sampling will lead to a
+ * kernel panic, so this is not supported yet.
+ */
+ .suppress_bind_attrs = true,
+ },
+ .probe = hisi_uc_pmu_probe,
+};
+
+static int __init hisi_uc_pmu_module_init(void)
+{
+ int ret;
+
+ ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
+ "perf/hisi/uc:online",
+ hisi_uncore_pmu_online_cpu,
+ hisi_uncore_pmu_offline_cpu);
+ if (ret < 0) {
+ pr_err("UC PMU: Error setup hotplug, ret = %d\n", ret);
+ return ret;
+ }
+ hisi_uc_pmu_online = ret;
+
+ ret = platform_driver_register(&hisi_uc_pmu_driver);
+ if (ret)
+ cpuhp_remove_multi_state(hisi_uc_pmu_online);
+
+ return ret;
+}
+module_init(hisi_uc_pmu_module_init);
+
+static void __exit hisi_uc_pmu_module_exit(void)
+{
+ platform_driver_unregister(&hisi_uc_pmu_driver);
+ cpuhp_remove_multi_state(hisi_uc_pmu_online);
+}
+module_exit(hisi_uc_pmu_module_exit);
+
+MODULE_DESCRIPTION("HiSilicon SoC UC uncore PMU driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Junhao He <hejunhao3@huawei.com>");
--
2.33.0
^ permalink raw reply related [flat|nested] 6+ messages in thread