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-rw-r--r--drivers/perf/Kconfig7
-rw-r--r--drivers/perf/Makefile1
-rw-r--r--drivers/perf/apple_m1_cpu_pmu.c6
-rw-r--r--drivers/perf/arm_cspmu/arm_cspmu.c4
-rw-r--r--drivers/perf/arm_dsu_pmu.c6
-rw-r--r--drivers/perf/arm_pmu.c12
-rw-r--r--drivers/perf/arm_pmuv3.c236
-rw-r--r--drivers/perf/arm_spe_pmu.c22
-rw-r--r--drivers/perf/dwc_pcie_pmu.c792
-rw-r--r--drivers/perf/fsl_imx8_ddr_perf.c45
-rw-r--r--drivers/perf/fsl_imx9_ddr_perf.c6
-rw-r--r--drivers/perf/hisilicon/hisi_uncore_uc_pmu.c42
-rw-r--r--drivers/perf/riscv_pmu.c4
13 files changed, 1061 insertions, 122 deletions
diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig
index 273d67ecf6..ec6e0d9194 100644
--- a/drivers/perf/Kconfig
+++ b/drivers/perf/Kconfig
@@ -217,6 +217,13 @@ config MARVELL_CN10K_DDR_PMU
Enable perf support for Marvell DDR Performance monitoring
event on CN10K platform.
+config DWC_PCIE_PMU
+ tristate "Synopsys DesignWare PCIe PMU"
+ depends on PCI
+ help
+ Enable perf support for Synopsys DesignWare PCIe PMU Performance
+ monitoring event on platform including the Alibaba Yitian 710.
+
source "drivers/perf/arm_cspmu/Kconfig"
source "drivers/perf/amlogic/Kconfig"
diff --git a/drivers/perf/Makefile b/drivers/perf/Makefile
index 16b3ec4db9..a06338e340 100644
--- a/drivers/perf/Makefile
+++ b/drivers/perf/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_MARVELL_CN10K_TAD_PMU) += marvell_cn10k_tad_pmu.o
obj-$(CONFIG_MARVELL_CN10K_DDR_PMU) += marvell_cn10k_ddr_pmu.o
obj-$(CONFIG_APPLE_M1_CPU_PMU) += apple_m1_cpu_pmu.o
obj-$(CONFIG_ALIBABA_UNCORE_DRW_PMU) += alibaba_uncore_drw_pmu.o
+obj-$(CONFIG_DWC_PCIE_PMU) += dwc_pcie_pmu.o
obj-$(CONFIG_ARM_CORESIGHT_PMU_ARCH_SYSTEM_PMU) += arm_cspmu/
obj-$(CONFIG_MESON_DDR_PMU) += amlogic/
obj-$(CONFIG_CXL_PMU) += cxl_pmu.o
diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index cd2de44b61..f322e5ca11 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -524,8 +524,10 @@ static int m1_pmu_set_event_filter(struct hw_perf_event *event,
{
unsigned long config_base = 0;
- if (!attr->exclude_guest)
- return -EINVAL;
+ if (!attr->exclude_guest) {
+ pr_debug("ARM performance counters do not support mode exclusion\n");
+ return -EOPNOTSUPP;
+ }
if (!attr->exclude_kernel)
config_base |= M1_PMU_CFG_COUNT_KERNEL;
if (!attr->exclude_user)
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index 2cc35dded0..50b89b989c 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -1108,7 +1108,6 @@ static int arm_cspmu_request_irq(struct arm_cspmu *cspmu)
static inline int arm_cspmu_find_cpu_container(int cpu, u32 container_uid)
{
- u64 acpi_uid;
struct device *cpu_dev;
struct acpi_device *acpi_dev;
@@ -1118,8 +1117,7 @@ static inline int arm_cspmu_find_cpu_container(int cpu, u32 container_uid)
acpi_dev = ACPI_COMPANION(cpu_dev);
while (acpi_dev) {
- if (acpi_dev_hid_uid_match(acpi_dev, ACPI_PROCESSOR_CONTAINER_HID, NULL) &&
- !acpi_dev_uid_to_integer(acpi_dev, &acpi_uid) && acpi_uid == container_uid)
+ if (acpi_dev_hid_uid_match(acpi_dev, ACPI_PROCESSOR_CONTAINER_HID, container_uid))
return 0;
acpi_dev = acpi_dev_parent(acpi_dev);
diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index 8223c49bd0..7ec4498e31 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -371,7 +371,7 @@ static inline u32 dsu_pmu_get_reset_overflow(void)
return __dsu_pmu_get_reset_overflow();
}
-/**
+/*
* dsu_pmu_set_event_period: Set the period for the counter.
*
* All DSU PMU event counters, except the cycle counter are 32bit
@@ -602,7 +602,7 @@ static struct dsu_pmu *dsu_pmu_alloc(struct platform_device *pdev)
return dsu_pmu;
}
-/**
+/*
* dsu_pmu_dt_get_cpus: Get the list of CPUs in the cluster
* from device tree.
*/
@@ -632,7 +632,7 @@ static int dsu_pmu_dt_get_cpus(struct device *dev, cpumask_t *mask)
return 0;
}
-/**
+/*
* dsu_pmu_acpi_get_cpus: Get the list of CPUs in the cluster
* from ACPI.
*/
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index d712a19e47..8458fe2ceb 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -445,7 +445,7 @@ __hw_perf_event_init(struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
- int mapping;
+ int mapping, ret;
hwc->flags = 0;
mapping = armpmu->map_event(event);
@@ -470,11 +470,10 @@ __hw_perf_event_init(struct perf_event *event)
/*
* Check whether we need to exclude the counter from certain modes.
*/
- if (armpmu->set_event_filter &&
- armpmu->set_event_filter(hwc, &event->attr)) {
- pr_debug("ARM performance counters do not support "
- "mode exclusion\n");
- return -EOPNOTSUPP;
+ if (armpmu->set_event_filter) {
+ ret = armpmu->set_event_filter(hwc, &event->attr);
+ if (ret)
+ return ret;
}
/*
@@ -893,7 +892,6 @@ struct arm_pmu *armpmu_alloc(void)
struct pmu_hw_events *events;
events = per_cpu_ptr(pmu->hw_events, cpu);
- raw_spin_lock_init(&events->pmu_lock);
events->percpu_pmu = pmu;
}
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index 0e80fdc9f9..23fa6c5da8 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -15,6 +15,7 @@
#include <clocksource/arm_arch_timer.h>
#include <linux/acpi.h>
+#include <linux/bitfield.h>
#include <linux/clocksource.h>
#include <linux/of.h>
#include <linux/perf/arm_pmu.h>
@@ -298,26 +299,66 @@ static const struct attribute_group armv8_pmuv3_events_attr_group = {
.is_visible = armv8pmu_event_attr_is_visible,
};
-PMU_FORMAT_ATTR(event, "config:0-15");
-PMU_FORMAT_ATTR(long, "config1:0");
-PMU_FORMAT_ATTR(rdpmc, "config1:1");
+/* User ABI */
+#define ATTR_CFG_FLD_event_CFG config
+#define ATTR_CFG_FLD_event_LO 0
+#define ATTR_CFG_FLD_event_HI 15
+#define ATTR_CFG_FLD_long_CFG config1
+#define ATTR_CFG_FLD_long_LO 0
+#define ATTR_CFG_FLD_long_HI 0
+#define ATTR_CFG_FLD_rdpmc_CFG config1
+#define ATTR_CFG_FLD_rdpmc_LO 1
+#define ATTR_CFG_FLD_rdpmc_HI 1
+#define ATTR_CFG_FLD_threshold_count_CFG config1 /* PMEVTYPER.TC[0] */
+#define ATTR_CFG_FLD_threshold_count_LO 2
+#define ATTR_CFG_FLD_threshold_count_HI 2
+#define ATTR_CFG_FLD_threshold_compare_CFG config1 /* PMEVTYPER.TC[2:1] */
+#define ATTR_CFG_FLD_threshold_compare_LO 3
+#define ATTR_CFG_FLD_threshold_compare_HI 4
+#define ATTR_CFG_FLD_threshold_CFG config1 /* PMEVTYPER.TH */
+#define ATTR_CFG_FLD_threshold_LO 5
+#define ATTR_CFG_FLD_threshold_HI 16
+
+GEN_PMU_FORMAT_ATTR(event);
+GEN_PMU_FORMAT_ATTR(long);
+GEN_PMU_FORMAT_ATTR(rdpmc);
+GEN_PMU_FORMAT_ATTR(threshold_count);
+GEN_PMU_FORMAT_ATTR(threshold_compare);
+GEN_PMU_FORMAT_ATTR(threshold);
static int sysctl_perf_user_access __read_mostly;
-static inline bool armv8pmu_event_is_64bit(struct perf_event *event)
+static bool armv8pmu_event_is_64bit(struct perf_event *event)
{
- return event->attr.config1 & 0x1;
+ return ATTR_CFG_GET_FLD(&event->attr, long);
}
-static inline bool armv8pmu_event_want_user_access(struct perf_event *event)
+static bool armv8pmu_event_want_user_access(struct perf_event *event)
{
- return event->attr.config1 & 0x2;
+ return ATTR_CFG_GET_FLD(&event->attr, rdpmc);
+}
+
+static u8 armv8pmu_event_threshold_control(struct perf_event_attr *attr)
+{
+ u8 th_compare = ATTR_CFG_GET_FLD(attr, threshold_compare);
+ u8 th_count = ATTR_CFG_GET_FLD(attr, threshold_count);
+
+ /*
+ * The count bit is always the bottom bit of the full control field, and
+ * the comparison is the upper two bits, but it's not explicitly
+ * labelled in the Arm ARM. For the Perf interface we split it into two
+ * fields, so reconstruct it here.
+ */
+ return (th_compare << 1) | th_count;
}
static struct attribute *armv8_pmuv3_format_attrs[] = {
&format_attr_event.attr,
&format_attr_long.attr,
&format_attr_rdpmc.attr,
+ &format_attr_threshold.attr,
+ &format_attr_threshold_compare.attr,
+ &format_attr_threshold_count.attr,
NULL,
};
@@ -331,7 +372,7 @@ static ssize_t slots_show(struct device *dev, struct device_attribute *attr,
{
struct pmu *pmu = dev_get_drvdata(dev);
struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
- u32 slots = cpu_pmu->reg_pmmir & ARMV8_PMU_SLOTS_MASK;
+ u32 slots = FIELD_GET(ARMV8_PMU_SLOTS, cpu_pmu->reg_pmmir);
return sysfs_emit(page, "0x%08x\n", slots);
}
@@ -343,8 +384,7 @@ static ssize_t bus_slots_show(struct device *dev, struct device_attribute *attr,
{
struct pmu *pmu = dev_get_drvdata(dev);
struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
- u32 bus_slots = (cpu_pmu->reg_pmmir >> ARMV8_PMU_BUS_SLOTS_SHIFT)
- & ARMV8_PMU_BUS_SLOTS_MASK;
+ u32 bus_slots = FIELD_GET(ARMV8_PMU_BUS_SLOTS, cpu_pmu->reg_pmmir);
return sysfs_emit(page, "0x%08x\n", bus_slots);
}
@@ -356,8 +396,7 @@ static ssize_t bus_width_show(struct device *dev, struct device_attribute *attr,
{
struct pmu *pmu = dev_get_drvdata(dev);
struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
- u32 bus_width = (cpu_pmu->reg_pmmir >> ARMV8_PMU_BUS_WIDTH_SHIFT)
- & ARMV8_PMU_BUS_WIDTH_MASK;
+ u32 bus_width = FIELD_GET(ARMV8_PMU_BUS_WIDTH, cpu_pmu->reg_pmmir);
u32 val = 0;
/* Encoded as Log2(number of bytes), plus one */
@@ -369,10 +408,38 @@ static ssize_t bus_width_show(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR_RO(bus_width);
+static u32 threshold_max(struct arm_pmu *cpu_pmu)
+{
+ /*
+ * PMMIR.THWIDTH is readable and non-zero on aarch32, but it would be
+ * impossible to write the threshold in the upper 32 bits of PMEVTYPER.
+ */
+ if (IS_ENABLED(CONFIG_ARM))
+ return 0;
+
+ /*
+ * The largest value that can be written to PMEVTYPER<n>_EL0.TH is
+ * (2 ^ PMMIR.THWIDTH) - 1.
+ */
+ return (1 << FIELD_GET(ARMV8_PMU_THWIDTH, cpu_pmu->reg_pmmir)) - 1;
+}
+
+static ssize_t threshold_max_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct pmu *pmu = dev_get_drvdata(dev);
+ struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
+
+ return sysfs_emit(page, "0x%08x\n", threshold_max(cpu_pmu));
+}
+
+static DEVICE_ATTR_RO(threshold_max);
+
static struct attribute *armv8_pmuv3_caps_attrs[] = {
&dev_attr_slots.attr,
&dev_attr_bus_slots.attr,
&dev_attr_bus_width.attr,
+ &dev_attr_threshold_max.attr,
NULL,
};
@@ -401,7 +468,7 @@ static bool armv8pmu_has_long_event(struct arm_pmu *cpu_pmu)
return (IS_ENABLED(CONFIG_ARM64) && is_pmuv3p5(cpu_pmu->pmuver));
}
-static inline bool armv8pmu_event_has_user_read(struct perf_event *event)
+static bool armv8pmu_event_has_user_read(struct perf_event *event)
{
return event->hw.flags & PERF_EVENT_FLAG_USER_READ_CNT;
}
@@ -411,7 +478,7 @@ static inline bool armv8pmu_event_has_user_read(struct perf_event *event)
* except when we have allocated the 64bit cycle counter (for CPU
* cycles event) or when user space counter access is enabled.
*/
-static inline bool armv8pmu_event_is_chained(struct perf_event *event)
+static bool armv8pmu_event_is_chained(struct perf_event *event)
{
int idx = event->hw.idx;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
@@ -432,36 +499,36 @@ static inline bool armv8pmu_event_is_chained(struct perf_event *event)
#define ARMV8_IDX_TO_COUNTER(x) \
(((x) - ARMV8_IDX_COUNTER0) & ARMV8_PMU_COUNTER_MASK)
-static inline u64 armv8pmu_pmcr_read(void)
+static u64 armv8pmu_pmcr_read(void)
{
return read_pmcr();
}
-static inline void armv8pmu_pmcr_write(u64 val)
+static void armv8pmu_pmcr_write(u64 val)
{
val &= ARMV8_PMU_PMCR_MASK;
isb();
write_pmcr(val);
}
-static inline int armv8pmu_has_overflowed(u32 pmovsr)
+static int armv8pmu_has_overflowed(u32 pmovsr)
{
return pmovsr & ARMV8_PMU_OVERFLOWED_MASK;
}
-static inline int armv8pmu_counter_has_overflowed(u32 pmnc, int idx)
+static int armv8pmu_counter_has_overflowed(u32 pmnc, int idx)
{
return pmnc & BIT(ARMV8_IDX_TO_COUNTER(idx));
}
-static inline u64 armv8pmu_read_evcntr(int idx)
+static u64 armv8pmu_read_evcntr(int idx)
{
u32 counter = ARMV8_IDX_TO_COUNTER(idx);
return read_pmevcntrn(counter);
}
-static inline u64 armv8pmu_read_hw_counter(struct perf_event *event)
+static u64 armv8pmu_read_hw_counter(struct perf_event *event)
{
int idx = event->hw.idx;
u64 val = armv8pmu_read_evcntr(idx);
@@ -523,14 +590,14 @@ static u64 armv8pmu_read_counter(struct perf_event *event)
return armv8pmu_unbias_long_counter(event, value);
}
-static inline void armv8pmu_write_evcntr(int idx, u64 value)
+static void armv8pmu_write_evcntr(int idx, u64 value)
{
u32 counter = ARMV8_IDX_TO_COUNTER(idx);
write_pmevcntrn(counter, value);
}
-static inline void armv8pmu_write_hw_counter(struct perf_event *event,
+static void armv8pmu_write_hw_counter(struct perf_event *event,
u64 value)
{
int idx = event->hw.idx;
@@ -556,15 +623,22 @@ static void armv8pmu_write_counter(struct perf_event *event, u64 value)
armv8pmu_write_hw_counter(event, value);
}
-static inline void armv8pmu_write_evtype(int idx, u32 val)
+static void armv8pmu_write_evtype(int idx, unsigned long val)
{
u32 counter = ARMV8_IDX_TO_COUNTER(idx);
+ unsigned long mask = ARMV8_PMU_EVTYPE_EVENT |
+ ARMV8_PMU_INCLUDE_EL2 |
+ ARMV8_PMU_EXCLUDE_EL0 |
+ ARMV8_PMU_EXCLUDE_EL1;
+
+ if (IS_ENABLED(CONFIG_ARM64))
+ mask |= ARMV8_PMU_EVTYPE_TC | ARMV8_PMU_EVTYPE_TH;
- val &= ARMV8_PMU_EVTYPE_MASK;
+ val &= mask;
write_pmevtypern(counter, val);
}
-static inline void armv8pmu_write_event_type(struct perf_event *event)
+static void armv8pmu_write_event_type(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
@@ -598,7 +672,7 @@ static u32 armv8pmu_event_cnten_mask(struct perf_event *event)
return mask;
}
-static inline void armv8pmu_enable_counter(u32 mask)
+static void armv8pmu_enable_counter(u32 mask)
{
/*
* Make sure event configuration register writes are visible before we
@@ -608,7 +682,7 @@ static inline void armv8pmu_enable_counter(u32 mask)
write_pmcntenset(mask);
}
-static inline void armv8pmu_enable_event_counter(struct perf_event *event)
+static void armv8pmu_enable_event_counter(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
u32 mask = armv8pmu_event_cnten_mask(event);
@@ -620,7 +694,7 @@ static inline void armv8pmu_enable_event_counter(struct perf_event *event)
armv8pmu_enable_counter(mask);
}
-static inline void armv8pmu_disable_counter(u32 mask)
+static void armv8pmu_disable_counter(u32 mask)
{
write_pmcntenclr(mask);
/*
@@ -630,7 +704,7 @@ static inline void armv8pmu_disable_counter(u32 mask)
isb();
}
-static inline void armv8pmu_disable_event_counter(struct perf_event *event)
+static void armv8pmu_disable_event_counter(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
u32 mask = armv8pmu_event_cnten_mask(event);
@@ -642,18 +716,18 @@ static inline void armv8pmu_disable_event_counter(struct perf_event *event)
armv8pmu_disable_counter(mask);
}
-static inline void armv8pmu_enable_intens(u32 mask)
+static void armv8pmu_enable_intens(u32 mask)
{
write_pmintenset(mask);
}
-static inline void armv8pmu_enable_event_irq(struct perf_event *event)
+static void armv8pmu_enable_event_irq(struct perf_event *event)
{
u32 counter = ARMV8_IDX_TO_COUNTER(event->hw.idx);
armv8pmu_enable_intens(BIT(counter));
}
-static inline void armv8pmu_disable_intens(u32 mask)
+static void armv8pmu_disable_intens(u32 mask)
{
write_pmintenclr(mask);
isb();
@@ -662,13 +736,13 @@ static inline void armv8pmu_disable_intens(u32 mask)
isb();
}
-static inline void armv8pmu_disable_event_irq(struct perf_event *event)
+static void armv8pmu_disable_event_irq(struct perf_event *event)
{
u32 counter = ARMV8_IDX_TO_COUNTER(event->hw.idx);
armv8pmu_disable_intens(BIT(counter));
}
-static inline u32 armv8pmu_getreset_flags(void)
+static u32 armv8pmu_getreset_flags(void)
{
u32 value;
@@ -676,7 +750,7 @@ static inline u32 armv8pmu_getreset_flags(void)
value = read_pmovsclr();
/* Write to clear flags */
- value &= ARMV8_PMU_OVSR_MASK;
+ value &= ARMV8_PMU_OVERFLOWED_MASK;
write_pmovsclr(value);
return value;
@@ -918,9 +992,15 @@ static int armv8pmu_set_event_filter(struct hw_perf_event *event,
struct perf_event_attr *attr)
{
unsigned long config_base = 0;
-
- if (attr->exclude_idle)
- return -EPERM;
+ struct perf_event *perf_event = container_of(attr, struct perf_event,
+ attr);
+ struct arm_pmu *cpu_pmu = to_arm_pmu(perf_event->pmu);
+ u32 th;
+
+ if (attr->exclude_idle) {
+ pr_debug("ARM performance counters do not support mode exclusion\n");
+ return -EOPNOTSUPP;
+ }
/*
* If we're running in hyp mode, then we *are* the hypervisor.
@@ -950,6 +1030,22 @@ static int armv8pmu_set_event_filter(struct hw_perf_event *event,
config_base |= ARMV8_PMU_EXCLUDE_EL0;
/*
+ * If FEAT_PMUv3_TH isn't implemented, then THWIDTH (threshold_max) will
+ * be 0 and will also trigger this check, preventing it from being used.
+ */
+ th = ATTR_CFG_GET_FLD(attr, threshold);
+ if (th > threshold_max(cpu_pmu)) {
+ pr_debug("PMU event threshold exceeds max value\n");
+ return -EINVAL;
+ }
+
+ if (IS_ENABLED(CONFIG_ARM64) && th) {
+ config_base |= FIELD_PREP(ARMV8_PMU_EVTYPE_TH, th);
+ config_base |= FIELD_PREP(ARMV8_PMU_EVTYPE_TC,
+ armv8pmu_event_threshold_control(attr));
+ }
+
+ /*
* Install the filter into config_base as this is used to
* construct the event type.
*/
@@ -1111,8 +1207,7 @@ static void __armv8pmu_probe_pmu(void *info)
probe->present = true;
/* Read the nb of CNTx counters supported from PMNC */
- cpu_pmu->num_events = (armv8pmu_pmcr_read() >> ARMV8_PMU_PMCR_N_SHIFT)
- & ARMV8_PMU_PMCR_N_MASK;
+ cpu_pmu->num_events = FIELD_GET(ARMV8_PMU_PMCR_N, armv8pmu_pmcr_read());
/* Add the CPU cycles counter */
cpu_pmu->num_events += 1;
@@ -1225,6 +1320,12 @@ static int name##_pmu_init(struct arm_pmu *cpu_pmu) \
return armv8_pmu_init(cpu_pmu, #name, armv8_pmuv3_map_event); \
}
+#define PMUV3_INIT_MAP_EVENT(name, map_event) \
+static int name##_pmu_init(struct arm_pmu *cpu_pmu) \
+{ \
+ return armv8_pmu_init(cpu_pmu, #name, map_event); \
+}
+
PMUV3_INIT_SIMPLE(armv8_pmuv3)
PMUV3_INIT_SIMPLE(armv8_cortex_a34)
@@ -1251,51 +1352,24 @@ PMUV3_INIT_SIMPLE(armv8_neoverse_v1)
PMUV3_INIT_SIMPLE(armv8_nvidia_carmel)
PMUV3_INIT_SIMPLE(armv8_nvidia_denver)
-static int armv8_a35_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cortex_a35", armv8_a53_map_event);
-}
-
-static int armv8_a53_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cortex_a53", armv8_a53_map_event);
-}
-
-static int armv8_a57_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cortex_a57", armv8_a57_map_event);
-}
-
-static int armv8_a72_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cortex_a72", armv8_a57_map_event);
-}
-
-static int armv8_a73_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cortex_a73", armv8_a73_map_event);
-}
-
-static int armv8_thunder_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_cavium_thunder", armv8_thunder_map_event);
-}
-
-static int armv8_vulcan_pmu_init(struct arm_pmu *cpu_pmu)
-{
- return armv8_pmu_init(cpu_pmu, "armv8_brcm_vulcan", armv8_vulcan_map_event);
-}
+PMUV3_INIT_MAP_EVENT(armv8_cortex_a35, armv8_a53_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_cortex_a53, armv8_a53_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_cortex_a57, armv8_a57_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_cortex_a72, armv8_a57_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_cortex_a73, armv8_a73_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_cavium_thunder, armv8_thunder_map_event)
+PMUV3_INIT_MAP_EVENT(armv8_brcm_vulcan, armv8_vulcan_map_event)
static const struct of_device_id armv8_pmu_of_device_ids[] = {
{.compatible = "arm,armv8-pmuv3", .data = armv8_pmuv3_pmu_init},
{.compatible = "arm,cortex-a34-pmu", .data = armv8_cortex_a34_pmu_init},
- {.compatible = "arm,cortex-a35-pmu", .data = armv8_a35_pmu_init},
- {.compatible = "arm,cortex-a53-pmu", .data = armv8_a53_pmu_init},
+ {.compatible = "arm,cortex-a35-pmu", .data = armv8_cortex_a35_pmu_init},
+ {.compatible = "arm,cortex-a53-pmu", .data = armv8_cortex_a53_pmu_init},
{.compatible = "arm,cortex-a55-pmu", .data = armv8_cortex_a55_pmu_init},
- {.compatible = "arm,cortex-a57-pmu", .data = armv8_a57_pmu_init},
+ {.compatible = "arm,cortex-a57-pmu", .data = armv8_cortex_a57_pmu_init},
{.compatible = "arm,cortex-a65-pmu", .data = armv8_cortex_a65_pmu_init},
- {.compatible = "arm,cortex-a72-pmu", .data = armv8_a72_pmu_init},
- {.compatible = "arm,cortex-a73-pmu", .data = armv8_a73_pmu_init},
+ {.compatible = "arm,cortex-a72-pmu", .data = armv8_cortex_a72_pmu_init},
+ {.compatible = "arm,cortex-a73-pmu", .data = armv8_cortex_a73_pmu_init},
{.compatible = "arm,cortex-a75-pmu", .data = armv8_cortex_a75_pmu_init},
{.compatible = "arm,cortex-a76-pmu", .data = armv8_cortex_a76_pmu_init},
{.compatible = "arm,cortex-a77-pmu", .data = armv8_cortex_a77_pmu_init},
@@ -1313,8 +1387,8 @@ static const struct of_device_id armv8_pmu_of_device_ids[] = {
{.compatible = "arm,neoverse-n1-pmu", .data = armv8_neoverse_n1_pmu_init},
{.compatible = "arm,neoverse-n2-pmu", .data = armv9_neoverse_n2_pmu_init},
{.compatible = "arm,neoverse-v1-pmu", .data = armv8_neoverse_v1_pmu_init},
- {.compatible = "cavium,thunder-pmu", .data = armv8_thunder_pmu_init},
- {.compatible = "brcm,vulcan-pmu", .data = armv8_vulcan_pmu_init},
+ {.compatible = "cavium,thunder-pmu", .data = armv8_cavium_thunder_pmu_init},
+ {.compatible = "brcm,vulcan-pmu", .data = armv8_brcm_vulcan_pmu_init},
{.compatible = "nvidia,carmel-pmu", .data = armv8_nvidia_carmel_pmu_init},
{.compatible = "nvidia,denver-pmu", .data = armv8_nvidia_denver_pmu_init},
{},
diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
index d2b0cbf0e0..b622d75d8c 100644
--- a/drivers/perf/arm_spe_pmu.c
+++ b/drivers/perf/arm_spe_pmu.c
@@ -206,28 +206,6 @@ static const struct attribute_group arm_spe_pmu_cap_group = {
#define ATTR_CFG_FLD_inv_event_filter_LO 0
#define ATTR_CFG_FLD_inv_event_filter_HI 63
-/* Why does everything I do descend into this? */
-#define __GEN_PMU_FORMAT_ATTR(cfg, lo, hi) \
- (lo) == (hi) ? #cfg ":" #lo "\n" : #cfg ":" #lo "-" #hi
-
-#define _GEN_PMU_FORMAT_ATTR(cfg, lo, hi) \
- __GEN_PMU_FORMAT_ATTR(cfg, lo, hi)
-
-#define GEN_PMU_FORMAT_ATTR(name) \
- PMU_FORMAT_ATTR(name, \
- _GEN_PMU_FORMAT_ATTR(ATTR_CFG_FLD_##name##_CFG, \
- ATTR_CFG_FLD_##name##_LO, \
- ATTR_CFG_FLD_##name##_HI))
-
-#define _ATTR_CFG_GET_FLD(attr, cfg, lo, hi) \
- ((((attr)->cfg) >> lo) & GENMASK(hi - lo, 0))
-
-#define ATTR_CFG_GET_FLD(attr, name) \
- _ATTR_CFG_GET_FLD(attr, \
- ATTR_CFG_FLD_##name##_CFG, \
- ATTR_CFG_FLD_##name##_LO, \
- ATTR_CFG_FLD_##name##_HI)
-
GEN_PMU_FORMAT_ATTR(ts_enable);
GEN_PMU_FORMAT_ATTR(pa_enable);
GEN_PMU_FORMAT_ATTR(pct_enable);
diff --git a/drivers/perf/dwc_pcie_pmu.c b/drivers/perf/dwc_pcie_pmu.c
new file mode 100644
index 0000000000..957058ad00
--- /dev/null
+++ b/drivers/perf/dwc_pcie_pmu.c
@@ -0,0 +1,792 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Synopsys DesignWare PCIe PMU driver
+ *
+ * Copyright (C) 2021-2023 Alibaba Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/cpuhotplug.h>
+#include <linux/cpumask.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/perf_event.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/smp.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+
+#define DWC_PCIE_VSEC_RAS_DES_ID 0x02
+#define DWC_PCIE_EVENT_CNT_CTL 0x8
+
+/*
+ * Event Counter Data Select includes two parts:
+ * - 27-24: Group number(4-bit: 0..0x7)
+ * - 23-16: Event number(8-bit: 0..0x13) within the Group
+ *
+ * Put them together as in TRM.
+ */
+#define DWC_PCIE_CNT_EVENT_SEL GENMASK(27, 16)
+#define DWC_PCIE_CNT_LANE_SEL GENMASK(11, 8)
+#define DWC_PCIE_CNT_STATUS BIT(7)
+#define DWC_PCIE_CNT_ENABLE GENMASK(4, 2)
+#define DWC_PCIE_PER_EVENT_OFF 0x1
+#define DWC_PCIE_PER_EVENT_ON 0x3
+#define DWC_PCIE_EVENT_CLEAR GENMASK(1, 0)
+#define DWC_PCIE_EVENT_PER_CLEAR 0x1
+
+#define DWC_PCIE_EVENT_CNT_DATA 0xC
+
+#define DWC_PCIE_TIME_BASED_ANAL_CTL 0x10
+#define DWC_PCIE_TIME_BASED_REPORT_SEL GENMASK(31, 24)
+#define DWC_PCIE_TIME_BASED_DURATION_SEL GENMASK(15, 8)
+#define DWC_PCIE_DURATION_MANUAL_CTL 0x0
+#define DWC_PCIE_DURATION_1MS 0x1
+#define DWC_PCIE_DURATION_10MS 0x2
+#define DWC_PCIE_DURATION_100MS 0x3
+#define DWC_PCIE_DURATION_1S 0x4
+#define DWC_PCIE_DURATION_2S 0x5
+#define DWC_PCIE_DURATION_4S 0x6
+#define DWC_PCIE_DURATION_4US 0xFF
+#define DWC_PCIE_TIME_BASED_TIMER_START BIT(0)
+#define DWC_PCIE_TIME_BASED_CNT_ENABLE 0x1
+
+#define DWC_PCIE_TIME_BASED_ANAL_DATA_REG_LOW 0x14
+#define DWC_PCIE_TIME_BASED_ANAL_DATA_REG_HIGH 0x18
+
+/* Event attributes */
+#define DWC_PCIE_CONFIG_EVENTID GENMASK(15, 0)
+#define DWC_PCIE_CONFIG_TYPE GENMASK(19, 16)
+#define DWC_PCIE_CONFIG_LANE GENMASK(27, 20)
+
+#define DWC_PCIE_EVENT_ID(event) FIELD_GET(DWC_PCIE_CONFIG_EVENTID, (event)->attr.config)
+#define DWC_PCIE_EVENT_TYPE(event) FIELD_GET(DWC_PCIE_CONFIG_TYPE, (event)->attr.config)
+#define DWC_PCIE_EVENT_LANE(event) FIELD_GET(DWC_PCIE_CONFIG_LANE, (event)->attr.config)
+
+enum dwc_pcie_event_type {
+ DWC_PCIE_TIME_BASE_EVENT,
+ DWC_PCIE_LANE_EVENT,
+ DWC_PCIE_EVENT_TYPE_MAX,
+};
+
+#define DWC_PCIE_LANE_EVENT_MAX_PERIOD GENMASK_ULL(31, 0)
+#define DWC_PCIE_MAX_PERIOD GENMASK_ULL(63, 0)
+
+struct dwc_pcie_pmu {
+ struct pmu pmu;
+ struct pci_dev *pdev; /* Root Port device */
+ u16 ras_des_offset;
+ u32 nr_lanes;
+
+ struct list_head pmu_node;
+ struct hlist_node cpuhp_node;
+ struct perf_event *event[DWC_PCIE_EVENT_TYPE_MAX];
+ int on_cpu;
+};
+
+#define to_dwc_pcie_pmu(p) (container_of(p, struct dwc_pcie_pmu, pmu))
+
+static int dwc_pcie_pmu_hp_state;
+static struct list_head dwc_pcie_dev_info_head =
+ LIST_HEAD_INIT(dwc_pcie_dev_info_head);
+static bool notify;
+
+struct dwc_pcie_dev_info {
+ struct platform_device *plat_dev;
+ struct pci_dev *pdev;
+ struct list_head dev_node;
+};
+
+struct dwc_pcie_vendor_id {
+ int vendor_id;
+};
+
+static const struct dwc_pcie_vendor_id dwc_pcie_vendor_ids[] = {
+ {.vendor_id = PCI_VENDOR_ID_ALIBABA },
+ {} /* terminator */
+};
+
+static ssize_t cpumask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(dev_get_drvdata(dev));
+
+ return cpumap_print_to_pagebuf(true, buf, cpumask_of(pcie_pmu->on_cpu));
+}
+static DEVICE_ATTR_RO(cpumask);
+
+static struct attribute *dwc_pcie_pmu_cpumask_attrs[] = {
+ &dev_attr_cpumask.attr,
+ NULL
+};
+
+static struct attribute_group dwc_pcie_cpumask_attr_group = {
+ .attrs = dwc_pcie_pmu_cpumask_attrs,
+};
+
+struct dwc_pcie_format_attr {
+ struct device_attribute attr;
+ u64 field;
+ int config;
+};
+
+PMU_FORMAT_ATTR(eventid, "config:0-15");
+PMU_FORMAT_ATTR(type, "config:16-19");
+PMU_FORMAT_ATTR(lane, "config:20-27");
+
+static struct attribute *dwc_pcie_format_attrs[] = {
+ &format_attr_type.attr,
+ &format_attr_eventid.attr,
+ &format_attr_lane.attr,
+ NULL,
+};
+
+static struct attribute_group dwc_pcie_format_attrs_group = {
+ .name = "format",
+ .attrs = dwc_pcie_format_attrs,
+};
+
+struct dwc_pcie_event_attr {
+ struct device_attribute attr;
+ enum dwc_pcie_event_type type;
+ u16 eventid;
+ u8 lane;
+};
+
+static ssize_t dwc_pcie_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct dwc_pcie_event_attr *eattr;
+
+ eattr = container_of(attr, typeof(*eattr), attr);
+
+ if (eattr->type == DWC_PCIE_LANE_EVENT)
+ return sysfs_emit(buf, "eventid=0x%x,type=0x%x,lane=?\n",
+ eattr->eventid, eattr->type);
+ else if (eattr->type == DWC_PCIE_TIME_BASE_EVENT)
+ return sysfs_emit(buf, "eventid=0x%x,type=0x%x\n",
+ eattr->eventid, eattr->type);
+
+ return 0;
+}
+
+#define DWC_PCIE_EVENT_ATTR(_name, _type, _eventid, _lane) \
+ (&((struct dwc_pcie_event_attr[]) {{ \
+ .attr = __ATTR(_name, 0444, dwc_pcie_event_show, NULL), \
+ .type = _type, \
+ .eventid = _eventid, \
+ .lane = _lane, \
+ }})[0].attr.attr)
+
+#define DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(_name, _eventid) \
+ DWC_PCIE_EVENT_ATTR(_name, DWC_PCIE_TIME_BASE_EVENT, _eventid, 0)
+#define DWC_PCIE_PMU_LANE_EVENT_ATTR(_name, _eventid) \
+ DWC_PCIE_EVENT_ATTR(_name, DWC_PCIE_LANE_EVENT, _eventid, 0)
+
+static struct attribute *dwc_pcie_pmu_time_event_attrs[] = {
+ /* Group #0 */
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(one_cycle, 0x00),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(TX_L0S, 0x01),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(RX_L0S, 0x02),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(L0, 0x03),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(L1, 0x04),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(L1_1, 0x05),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(L1_2, 0x06),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(CFG_RCVRY, 0x07),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(TX_RX_L0S, 0x08),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(L1_AUX, 0x09),
+
+ /* Group #1 */
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(Tx_PCIe_TLP_Data_Payload, 0x20),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(Rx_PCIe_TLP_Data_Payload, 0x21),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(Tx_CCIX_TLP_Data_Payload, 0x22),
+ DWC_PCIE_PMU_TIME_BASE_EVENT_ATTR(Rx_CCIX_TLP_Data_Payload, 0x23),
+
+ /*
+ * Leave it to the user to specify the lane ID to avoid generating
+ * a list of hundreds of events.
+ */
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_ack_dllp, 0x600),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_update_fc_dllp, 0x601),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_ack_dllp, 0x602),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_update_fc_dllp, 0x603),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_nulified_tlp, 0x604),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_nulified_tlp, 0x605),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_duplicate_tl, 0x606),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_memory_write, 0x700),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_memory_read, 0x701),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_configuration_write, 0x702),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_configuration_read, 0x703),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_io_write, 0x704),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_io_read, 0x705),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_completion_without_data, 0x706),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_completion_with_data, 0x707),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_message_tlp, 0x708),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_atomic, 0x709),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_tlp_with_prefix, 0x70A),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_memory_write, 0x70B),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_memory_read, 0x70C),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_io_write, 0x70F),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_io_read, 0x710),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_completion_without_data, 0x711),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_completion_with_data, 0x712),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_message_tlp, 0x713),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_atomic, 0x714),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_tlp_with_prefix, 0x715),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(tx_ccix_tlp, 0x716),
+ DWC_PCIE_PMU_LANE_EVENT_ATTR(rx_ccix_tlp, 0x717),
+ NULL
+};
+
+static const struct attribute_group dwc_pcie_event_attrs_group = {
+ .name = "events",
+ .attrs = dwc_pcie_pmu_time_event_attrs,
+};
+
+static const struct attribute_group *dwc_pcie_attr_groups[] = {
+ &dwc_pcie_event_attrs_group,
+ &dwc_pcie_format_attrs_group,
+ &dwc_pcie_cpumask_attr_group,
+ NULL
+};
+
+static void dwc_pcie_pmu_lane_event_enable(struct dwc_pcie_pmu *pcie_pmu,
+ bool enable)
+{
+ struct pci_dev *pdev = pcie_pmu->pdev;
+ u16 ras_des_offset = pcie_pmu->ras_des_offset;
+
+ if (enable)
+ pci_clear_and_set_config_dword(pdev,
+ ras_des_offset + DWC_PCIE_EVENT_CNT_CTL,
+ DWC_PCIE_CNT_ENABLE, DWC_PCIE_PER_EVENT_ON);
+ else
+ pci_clear_and_set_config_dword(pdev,
+ ras_des_offset + DWC_PCIE_EVENT_CNT_CTL,
+ DWC_PCIE_CNT_ENABLE, DWC_PCIE_PER_EVENT_OFF);
+}
+
+static void dwc_pcie_pmu_time_based_event_enable(struct dwc_pcie_pmu *pcie_pmu,
+ bool enable)
+{
+ struct pci_dev *pdev = pcie_pmu->pdev;
+ u16 ras_des_offset = pcie_pmu->ras_des_offset;
+
+ pci_clear_and_set_config_dword(pdev,
+ ras_des_offset + DWC_PCIE_TIME_BASED_ANAL_CTL,
+ DWC_PCIE_TIME_BASED_TIMER_START, enable);
+}
+
+static u64 dwc_pcie_pmu_read_lane_event_counter(struct perf_event *event)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ struct pci_dev *pdev = pcie_pmu->pdev;
+ u16 ras_des_offset = pcie_pmu->ras_des_offset;
+ u32 val;
+
+ pci_read_config_dword(pdev, ras_des_offset + DWC_PCIE_EVENT_CNT_DATA, &val);
+
+ return val;
+}
+
+static u64 dwc_pcie_pmu_read_time_based_counter(struct perf_event *event)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ struct pci_dev *pdev = pcie_pmu->pdev;
+ int event_id = DWC_PCIE_EVENT_ID(event);
+ u16 ras_des_offset = pcie_pmu->ras_des_offset;
+ u32 lo, hi, ss;
+ u64 val;
+
+ /*
+ * The 64-bit value of the data counter is spread across two
+ * registers that are not synchronized. In order to read them
+ * atomically, ensure that the high 32 bits match before and after
+ * reading the low 32 bits.
+ */
+ pci_read_config_dword(pdev,
+ ras_des_offset + DWC_PCIE_TIME_BASED_ANAL_DATA_REG_HIGH, &hi);
+ do {
+ /* snapshot the high 32 bits */
+ ss = hi;
+
+ pci_read_config_dword(
+ pdev, ras_des_offset + DWC_PCIE_TIME_BASED_ANAL_DATA_REG_LOW,
+ &lo);
+ pci_read_config_dword(
+ pdev, ras_des_offset + DWC_PCIE_TIME_BASED_ANAL_DATA_REG_HIGH,
+ &hi);
+ } while (hi != ss);
+
+ val = ((u64)hi << 32) | lo;
+ /*
+ * The Group#1 event measures the amount of data processed in 16-byte
+ * units. Simplify the end-user interface by multiplying the counter
+ * at the point of read.
+ */
+ if (event_id >= 0x20 && event_id <= 0x23)
+ val *= 16;
+
+ return val;
+}
+
+static void dwc_pcie_pmu_event_update(struct perf_event *event)
+{
+ struct hw_perf_event *hwc = &event->hw;
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+ u64 delta, prev, now = 0;
+
+ do {
+ prev = local64_read(&hwc->prev_count);
+
+ if (type == DWC_PCIE_LANE_EVENT)
+ now = dwc_pcie_pmu_read_lane_event_counter(event);
+ else if (type == DWC_PCIE_TIME_BASE_EVENT)
+ now = dwc_pcie_pmu_read_time_based_counter(event);
+
+ } while (local64_cmpxchg(&hwc->prev_count, prev, now) != prev);
+
+ delta = (now - prev) & DWC_PCIE_MAX_PERIOD;
+ /* 32-bit counter for Lane Event Counting */
+ if (type == DWC_PCIE_LANE_EVENT)
+ delta &= DWC_PCIE_LANE_EVENT_MAX_PERIOD;
+
+ local64_add(delta, &event->count);
+}
+
+static int dwc_pcie_pmu_event_init(struct perf_event *event)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+ struct perf_event *sibling;
+ u32 lane;
+
+ if (event->attr.type != event->pmu->type)
+ return -ENOENT;
+
+ /* We don't support sampling */
+ if (is_sampling_event(event))
+ return -EINVAL;
+
+ /* We cannot support task bound events */
+ if (event->cpu < 0 || event->attach_state & PERF_ATTACH_TASK)
+ return -EINVAL;
+
+ if (event->group_leader != event &&
+ !is_software_event(event->group_leader))
+ return -EINVAL;
+
+ for_each_sibling_event(sibling, event->group_leader) {
+ if (sibling->pmu != event->pmu && !is_software_event(sibling))
+ return -EINVAL;
+ }
+
+ if (type < 0 || type >= DWC_PCIE_EVENT_TYPE_MAX)
+ return -EINVAL;
+
+ if (type == DWC_PCIE_LANE_EVENT) {
+ lane = DWC_PCIE_EVENT_LANE(event);
+ if (lane < 0 || lane >= pcie_pmu->nr_lanes)
+ return -EINVAL;
+ }
+
+ event->cpu = pcie_pmu->on_cpu;
+
+ return 0;
+}
+
+static void dwc_pcie_pmu_event_start(struct perf_event *event, int flags)
+{
+ struct hw_perf_event *hwc = &event->hw;
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+
+ hwc->state = 0;
+ local64_set(&hwc->prev_count, 0);
+
+ if (type == DWC_PCIE_LANE_EVENT)
+ dwc_pcie_pmu_lane_event_enable(pcie_pmu, true);
+ else if (type == DWC_PCIE_TIME_BASE_EVENT)
+ dwc_pcie_pmu_time_based_event_enable(pcie_pmu, true);
+}
+
+static void dwc_pcie_pmu_event_stop(struct perf_event *event, int flags)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+ struct hw_perf_event *hwc = &event->hw;
+
+ if (event->hw.state & PERF_HES_STOPPED)
+ return;
+
+ if (type == DWC_PCIE_LANE_EVENT)
+ dwc_pcie_pmu_lane_event_enable(pcie_pmu, false);
+ else if (type == DWC_PCIE_TIME_BASE_EVENT)
+ dwc_pcie_pmu_time_based_event_enable(pcie_pmu, false);
+
+ dwc_pcie_pmu_event_update(event);
+ hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;
+}
+
+static int dwc_pcie_pmu_event_add(struct perf_event *event, int flags)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ struct pci_dev *pdev = pcie_pmu->pdev;
+ struct hw_perf_event *hwc = &event->hw;
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+ int event_id = DWC_PCIE_EVENT_ID(event);
+ int lane = DWC_PCIE_EVENT_LANE(event);
+ u16 ras_des_offset = pcie_pmu->ras_des_offset;
+ u32 ctrl;
+
+ /* one counter for each type and it is in use */
+ if (pcie_pmu->event[type])
+ return -ENOSPC;
+
+ pcie_pmu->event[type] = event;
+ hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE;
+
+ if (type == DWC_PCIE_LANE_EVENT) {
+ /* EVENT_COUNTER_DATA_REG needs clear manually */
+ ctrl = FIELD_PREP(DWC_PCIE_CNT_EVENT_SEL, event_id) |
+ FIELD_PREP(DWC_PCIE_CNT_LANE_SEL, lane) |
+ FIELD_PREP(DWC_PCIE_CNT_ENABLE, DWC_PCIE_PER_EVENT_OFF) |
+ FIELD_PREP(DWC_PCIE_EVENT_CLEAR, DWC_PCIE_EVENT_PER_CLEAR);
+ pci_write_config_dword(pdev, ras_des_offset + DWC_PCIE_EVENT_CNT_CTL,
+ ctrl);
+ } else if (type == DWC_PCIE_TIME_BASE_EVENT) {
+ /*
+ * TIME_BASED_ANAL_DATA_REG is a 64 bit register, we can safely
+ * use it with any manually controlled duration. And it is
+ * cleared when next measurement starts.
+ */
+ ctrl = FIELD_PREP(DWC_PCIE_TIME_BASED_REPORT_SEL, event_id) |
+ FIELD_PREP(DWC_PCIE_TIME_BASED_DURATION_SEL,
+ DWC_PCIE_DURATION_MANUAL_CTL) |
+ DWC_PCIE_TIME_BASED_CNT_ENABLE;
+ pci_write_config_dword(
+ pdev, ras_des_offset + DWC_PCIE_TIME_BASED_ANAL_CTL, ctrl);
+ }
+
+ if (flags & PERF_EF_START)
+ dwc_pcie_pmu_event_start(event, PERF_EF_RELOAD);
+
+ perf_event_update_userpage(event);
+
+ return 0;
+}
+
+static void dwc_pcie_pmu_event_del(struct perf_event *event, int flags)
+{
+ struct dwc_pcie_pmu *pcie_pmu = to_dwc_pcie_pmu(event->pmu);
+ enum dwc_pcie_event_type type = DWC_PCIE_EVENT_TYPE(event);
+
+ dwc_pcie_pmu_event_stop(event, flags | PERF_EF_UPDATE);
+ perf_event_update_userpage(event);
+ pcie_pmu->event[type] = NULL;
+}
+
+static void dwc_pcie_pmu_remove_cpuhp_instance(void *hotplug_node)
+{
+ cpuhp_state_remove_instance_nocalls(dwc_pcie_pmu_hp_state, hotplug_node);
+}
+
+/*
+ * Find the binded DES capability device info of a PCI device.
+ * @pdev: The PCI device.
+ */
+static struct dwc_pcie_dev_info *dwc_pcie_find_dev_info(struct pci_dev *pdev)
+{
+ struct dwc_pcie_dev_info *dev_info;
+
+ list_for_each_entry(dev_info, &dwc_pcie_dev_info_head, dev_node)
+ if (dev_info->pdev == pdev)
+ return dev_info;
+
+ return NULL;
+}
+
+static void dwc_pcie_unregister_pmu(void *data)
+{
+ struct dwc_pcie_pmu *pcie_pmu = data;
+
+ perf_pmu_unregister(&pcie_pmu->pmu);
+}
+
+static bool dwc_pcie_match_des_cap(struct pci_dev *pdev)
+{
+ const struct dwc_pcie_vendor_id *vid;
+ u16 vsec = 0;
+ u32 val;
+
+ if (!pci_is_pcie(pdev) || !(pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT))
+ return false;
+
+ for (vid = dwc_pcie_vendor_ids; vid->vendor_id; vid++) {
+ vsec = pci_find_vsec_capability(pdev, vid->vendor_id,
+ DWC_PCIE_VSEC_RAS_DES_ID);
+ if (vsec)
+ break;
+ }
+ if (!vsec)
+ return false;
+
+ pci_read_config_dword(pdev, vsec + PCI_VNDR_HEADER, &val);
+ if (PCI_VNDR_HEADER_REV(val) != 0x04)
+ return false;
+
+ pci_dbg(pdev,
+ "Detected PCIe Vendor-Specific Extended Capability RAS DES\n");
+ return true;
+}
+
+static void dwc_pcie_unregister_dev(struct dwc_pcie_dev_info *dev_info)
+{
+ platform_device_unregister(dev_info->plat_dev);
+ list_del(&dev_info->dev_node);
+ kfree(dev_info);
+}
+
+static int dwc_pcie_register_dev(struct pci_dev *pdev)
+{
+ struct platform_device *plat_dev;
+ struct dwc_pcie_dev_info *dev_info;
+ u32 bdf;
+
+ bdf = PCI_DEVID(pdev->bus->number, pdev->devfn);
+ plat_dev = platform_device_register_data(NULL, "dwc_pcie_pmu", bdf,
+ pdev, sizeof(*pdev));
+
+ if (IS_ERR(plat_dev))
+ return PTR_ERR(plat_dev);
+
+ dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
+ if (!dev_info)
+ return -ENOMEM;
+
+ /* Cache platform device to handle pci device hotplug */
+ dev_info->plat_dev = plat_dev;
+ dev_info->pdev = pdev;
+ list_add(&dev_info->dev_node, &dwc_pcie_dev_info_head);
+
+ return 0;
+}
+
+static int dwc_pcie_pmu_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct device *dev = data;
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct dwc_pcie_dev_info *dev_info;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ if (!dwc_pcie_match_des_cap(pdev))
+ return NOTIFY_DONE;
+ if (dwc_pcie_register_dev(pdev))
+ return NOTIFY_BAD;
+ break;
+ case BUS_NOTIFY_DEL_DEVICE:
+ dev_info = dwc_pcie_find_dev_info(pdev);
+ if (!dev_info)
+ return NOTIFY_DONE;
+ dwc_pcie_unregister_dev(dev_info);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block dwc_pcie_pmu_nb = {
+ .notifier_call = dwc_pcie_pmu_notifier,
+};
+
+static int dwc_pcie_pmu_probe(struct platform_device *plat_dev)
+{
+ struct pci_dev *pdev = plat_dev->dev.platform_data;
+ struct dwc_pcie_pmu *pcie_pmu;
+ char *name;
+ u32 bdf, val;
+ u16 vsec;
+ int ret;
+
+ vsec = pci_find_vsec_capability(pdev, pdev->vendor,
+ DWC_PCIE_VSEC_RAS_DES_ID);
+ pci_read_config_dword(pdev, vsec + PCI_VNDR_HEADER, &val);
+ bdf = PCI_DEVID(pdev->bus->number, pdev->devfn);
+ name = devm_kasprintf(&plat_dev->dev, GFP_KERNEL, "dwc_rootport_%x", bdf);
+ if (!name)
+ return -ENOMEM;
+
+ pcie_pmu = devm_kzalloc(&plat_dev->dev, sizeof(*pcie_pmu), GFP_KERNEL);
+ if (!pcie_pmu)
+ return -ENOMEM;
+
+ pcie_pmu->pdev = pdev;
+ pcie_pmu->ras_des_offset = vsec;
+ pcie_pmu->nr_lanes = pcie_get_width_cap(pdev);
+ pcie_pmu->on_cpu = -1;
+ pcie_pmu->pmu = (struct pmu){
+ .name = name,
+ .parent = &pdev->dev,
+ .module = THIS_MODULE,
+ .attr_groups = dwc_pcie_attr_groups,
+ .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
+ .task_ctx_nr = perf_invalid_context,
+ .event_init = dwc_pcie_pmu_event_init,
+ .add = dwc_pcie_pmu_event_add,
+ .del = dwc_pcie_pmu_event_del,
+ .start = dwc_pcie_pmu_event_start,
+ .stop = dwc_pcie_pmu_event_stop,
+ .read = dwc_pcie_pmu_event_update,
+ };
+
+ /* Add this instance to the list used by the offline callback */
+ ret = cpuhp_state_add_instance(dwc_pcie_pmu_hp_state,
+ &pcie_pmu->cpuhp_node);
+ if (ret) {
+ pci_err(pdev, "Error %d registering hotplug @%x\n", ret, bdf);
+ return ret;
+ }
+
+ /* Unwind when platform driver removes */
+ ret = devm_add_action_or_reset(&plat_dev->dev,
+ dwc_pcie_pmu_remove_cpuhp_instance,
+ &pcie_pmu->cpuhp_node);
+ if (ret)
+ return ret;
+
+ ret = perf_pmu_register(&pcie_pmu->pmu, name, -1);
+ if (ret) {
+ pci_err(pdev, "Error %d registering PMU @%x\n", ret, bdf);
+ return ret;
+ }
+ ret = devm_add_action_or_reset(&plat_dev->dev, dwc_pcie_unregister_pmu,
+ pcie_pmu);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int dwc_pcie_pmu_online_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
+{
+ struct dwc_pcie_pmu *pcie_pmu;
+
+ pcie_pmu = hlist_entry_safe(cpuhp_node, struct dwc_pcie_pmu, cpuhp_node);
+ if (pcie_pmu->on_cpu == -1)
+ pcie_pmu->on_cpu = cpumask_local_spread(
+ 0, dev_to_node(&pcie_pmu->pdev->dev));
+
+ return 0;
+}
+
+static int dwc_pcie_pmu_offline_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
+{
+ struct dwc_pcie_pmu *pcie_pmu;
+ struct pci_dev *pdev;
+ int node;
+ cpumask_t mask;
+ unsigned int target;
+
+ pcie_pmu = hlist_entry_safe(cpuhp_node, struct dwc_pcie_pmu, cpuhp_node);
+ /* Nothing to do if this CPU doesn't own the PMU */
+ if (cpu != pcie_pmu->on_cpu)
+ return 0;
+
+ pcie_pmu->on_cpu = -1;
+ pdev = pcie_pmu->pdev;
+ node = dev_to_node(&pdev->dev);
+ if (cpumask_and(&mask, cpumask_of_node(node), cpu_online_mask) &&
+ cpumask_andnot(&mask, &mask, cpumask_of(cpu)))
+ target = cpumask_any(&mask);
+ else
+ target = cpumask_any_but(cpu_online_mask, cpu);
+
+ if (target >= nr_cpu_ids) {
+ pci_err(pdev, "There is no CPU to set\n");
+ return 0;
+ }
+
+ /* This PMU does NOT support interrupt, just migrate context. */
+ perf_pmu_migrate_context(&pcie_pmu->pmu, cpu, target);
+ pcie_pmu->on_cpu = target;
+
+ return 0;
+}
+
+static struct platform_driver dwc_pcie_pmu_driver = {
+ .probe = dwc_pcie_pmu_probe,
+ .driver = {.name = "dwc_pcie_pmu",},
+};
+
+static int __init dwc_pcie_pmu_init(void)
+{
+ struct pci_dev *pdev = NULL;
+ bool found = false;
+ int ret;
+
+ for_each_pci_dev(pdev) {
+ if (!dwc_pcie_match_des_cap(pdev))
+ continue;
+
+ ret = dwc_pcie_register_dev(pdev);
+ if (ret) {
+ pci_dev_put(pdev);
+ return ret;
+ }
+
+ found = true;
+ }
+ if (!found)
+ return -ENODEV;
+
+ ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
+ "perf/dwc_pcie_pmu:online",
+ dwc_pcie_pmu_online_cpu,
+ dwc_pcie_pmu_offline_cpu);
+ if (ret < 0)
+ return ret;
+
+ dwc_pcie_pmu_hp_state = ret;
+
+ ret = platform_driver_register(&dwc_pcie_pmu_driver);
+ if (ret)
+ goto platform_driver_register_err;
+
+ ret = bus_register_notifier(&pci_bus_type, &dwc_pcie_pmu_nb);
+ if (ret)
+ goto platform_driver_register_err;
+ notify = true;
+
+ return 0;
+
+platform_driver_register_err:
+ cpuhp_remove_multi_state(dwc_pcie_pmu_hp_state);
+
+ return ret;
+}
+
+static void __exit dwc_pcie_pmu_exit(void)
+{
+ struct dwc_pcie_dev_info *dev_info, *tmp;
+
+ if (notify)
+ bus_unregister_notifier(&pci_bus_type, &dwc_pcie_pmu_nb);
+ list_for_each_entry_safe(dev_info, tmp, &dwc_pcie_dev_info_head, dev_node)
+ dwc_pcie_unregister_dev(dev_info);
+ platform_driver_unregister(&dwc_pcie_pmu_driver);
+ cpuhp_remove_multi_state(dwc_pcie_pmu_hp_state);
+}
+
+module_init(dwc_pcie_pmu_init);
+module_exit(dwc_pcie_pmu_exit);
+
+MODULE_DESCRIPTION("PMU driver for DesignWare Cores PCI Express Controller");
+MODULE_AUTHOR("Shuai Xue <xueshuai@linux.alibaba.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/perf/fsl_imx8_ddr_perf.c b/drivers/perf/fsl_imx8_ddr_perf.c
index 92611c9812..7dbfaee372 100644
--- a/drivers/perf/fsl_imx8_ddr_perf.c
+++ b/drivers/perf/fsl_imx8_ddr_perf.c
@@ -19,6 +19,8 @@
#define COUNTER_READ 0x20
#define COUNTER_DPCR1 0x30
+#define COUNTER_MUX_CNTL 0x50
+#define COUNTER_MASK_COMP 0x54
#define CNTL_OVER 0x1
#define CNTL_CLEAR 0x2
@@ -32,6 +34,13 @@
#define CNTL_CSV_SHIFT 24
#define CNTL_CSV_MASK (0xFFU << CNTL_CSV_SHIFT)
+#define READ_PORT_SHIFT 0
+#define READ_PORT_MASK (0x7 << READ_PORT_SHIFT)
+#define READ_CHANNEL_REVERT 0x00000008 /* bit 3 for read channel select */
+#define WRITE_PORT_SHIFT 8
+#define WRITE_PORT_MASK (0x7 << WRITE_PORT_SHIFT)
+#define WRITE_CHANNEL_REVERT 0x00000800 /* bit 11 for write channel select */
+
#define EVENT_CYCLES_ID 0
#define EVENT_CYCLES_COUNTER 0
#define NUM_COUNTERS 4
@@ -50,6 +59,7 @@ static DEFINE_IDA(ddr_ida);
/* DDR Perf hardware feature */
#define DDR_CAP_AXI_ID_FILTER 0x1 /* support AXI ID filter */
#define DDR_CAP_AXI_ID_FILTER_ENHANCED 0x3 /* support enhanced AXI ID filter */
+#define DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER 0x4 /* support AXI ID PORT CHANNEL filter */
struct fsl_ddr_devtype_data {
unsigned int quirks; /* quirks needed for different DDR Perf core */
@@ -82,6 +92,11 @@ static const struct fsl_ddr_devtype_data imx8mp_devtype_data = {
.identifier = "i.MX8MP",
};
+static const struct fsl_ddr_devtype_data imx8dxl_devtype_data = {
+ .quirks = DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER,
+ .identifier = "i.MX8DXL",
+};
+
static const struct of_device_id imx_ddr_pmu_dt_ids[] = {
{ .compatible = "fsl,imx8-ddr-pmu", .data = &imx8_devtype_data},
{ .compatible = "fsl,imx8m-ddr-pmu", .data = &imx8m_devtype_data},
@@ -89,6 +104,7 @@ static const struct of_device_id imx_ddr_pmu_dt_ids[] = {
{ .compatible = "fsl,imx8mm-ddr-pmu", .data = &imx8mm_devtype_data},
{ .compatible = "fsl,imx8mn-ddr-pmu", .data = &imx8mn_devtype_data},
{ .compatible = "fsl,imx8mp-ddr-pmu", .data = &imx8mp_devtype_data},
+ { .compatible = "fsl,imx8dxl-ddr-pmu", .data = &imx8dxl_devtype_data},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_ddr_pmu_dt_ids);
@@ -144,6 +160,7 @@ static const struct attribute_group ddr_perf_identifier_attr_group = {
enum ddr_perf_filter_capabilities {
PERF_CAP_AXI_ID_FILTER = 0,
PERF_CAP_AXI_ID_FILTER_ENHANCED,
+ PERF_CAP_AXI_ID_PORT_CHANNEL_FILTER,
PERF_CAP_AXI_ID_FEAT_MAX,
};
@@ -157,6 +174,8 @@ static u32 ddr_perf_filter_cap_get(struct ddr_pmu *pmu, int cap)
case PERF_CAP_AXI_ID_FILTER_ENHANCED:
quirks &= DDR_CAP_AXI_ID_FILTER_ENHANCED;
return quirks == DDR_CAP_AXI_ID_FILTER_ENHANCED;
+ case PERF_CAP_AXI_ID_PORT_CHANNEL_FILTER:
+ return !!(quirks & DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER);
default:
WARN(1, "unknown filter cap %d\n", cap);
}
@@ -187,6 +206,7 @@ static ssize_t ddr_perf_filter_cap_show(struct device *dev,
static struct attribute *ddr_perf_filter_cap_attr[] = {
PERF_FILTER_EXT_ATTR_ENTRY(filter, PERF_CAP_AXI_ID_FILTER),
PERF_FILTER_EXT_ATTR_ENTRY(enhanced_filter, PERF_CAP_AXI_ID_FILTER_ENHANCED),
+ PERF_FILTER_EXT_ATTR_ENTRY(super_filter, PERF_CAP_AXI_ID_PORT_CHANNEL_FILTER),
NULL,
};
@@ -272,11 +292,15 @@ static const struct attribute_group ddr_perf_events_attr_group = {
PMU_FORMAT_ATTR(event, "config:0-7");
PMU_FORMAT_ATTR(axi_id, "config1:0-15");
PMU_FORMAT_ATTR(axi_mask, "config1:16-31");
+PMU_FORMAT_ATTR(axi_port, "config2:0-2");
+PMU_FORMAT_ATTR(axi_channel, "config2:3-3");
static struct attribute *ddr_perf_format_attrs[] = {
&format_attr_event.attr,
&format_attr_axi_id.attr,
&format_attr_axi_mask.attr,
+ &format_attr_axi_port.attr,
+ &format_attr_axi_channel.attr,
NULL,
};
@@ -530,6 +554,7 @@ static int ddr_perf_event_add(struct perf_event *event, int flags)
int counter;
int cfg = event->attr.config;
int cfg1 = event->attr.config1;
+ int cfg2 = event->attr.config2;
if (pmu->devtype_data->quirks & DDR_CAP_AXI_ID_FILTER) {
int i;
@@ -553,6 +578,26 @@ static int ddr_perf_event_add(struct perf_event *event, int flags)
return -EOPNOTSUPP;
}
+ if (pmu->devtype_data->quirks & DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER) {
+ if (ddr_perf_is_filtered(event)) {
+ /* revert axi id masking(axi_mask) value */
+ cfg1 ^= AXI_MASKING_REVERT;
+ writel(cfg1, pmu->base + COUNTER_MASK_COMP + ((counter - 1) << 4));
+
+ if (cfg == 0x41) {
+ /* revert axi read channel(axi_channel) value */
+ cfg2 ^= READ_CHANNEL_REVERT;
+ cfg2 |= FIELD_PREP(READ_PORT_MASK, cfg2);
+ } else {
+ /* revert axi write channel(axi_channel) value */
+ cfg2 ^= WRITE_CHANNEL_REVERT;
+ cfg2 |= FIELD_PREP(WRITE_PORT_MASK, cfg2);
+ }
+
+ writel(cfg2, pmu->base + COUNTER_MUX_CNTL + ((counter - 1) << 4));
+ }
+ }
+
pmu->events[counter] = event;
hwc->idx = counter;
diff --git a/drivers/perf/fsl_imx9_ddr_perf.c b/drivers/perf/fsl_imx9_ddr_perf.c
index 5cf770a1bc..9685645bfe 100644
--- a/drivers/perf/fsl_imx9_ddr_perf.c
+++ b/drivers/perf/fsl_imx9_ddr_perf.c
@@ -617,7 +617,7 @@ static int ddr_perf_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pmu);
- pmu->id = ida_simple_get(&ddr_ida, 0, 0, GFP_KERNEL);
+ pmu->id = ida_alloc(&ddr_ida, GFP_KERNEL);
name = devm_kasprintf(&pdev->dev, GFP_KERNEL, DDR_PERF_DEV_NAME "%d", pmu->id);
if (!name) {
ret = -ENOMEM;
@@ -674,7 +674,7 @@ cpuhp_instance_err:
cpuhp_remove_multi_state(pmu->cpuhp_state);
cpuhp_state_err:
format_string_err:
- ida_simple_remove(&ddr_ida, pmu->id);
+ ida_free(&ddr_ida, pmu->id);
dev_warn(&pdev->dev, "i.MX9 DDR Perf PMU failed (%d), disabled\n", ret);
return ret;
}
@@ -688,7 +688,7 @@ static int ddr_perf_remove(struct platform_device *pdev)
perf_pmu_unregister(&pmu->pmu);
- ida_simple_remove(&ddr_ida, pmu->id);
+ ida_free(&ddr_ida, pmu->id);
return 0;
}
diff --git a/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
index 636fb79647..481dcc9e8f 100644
--- a/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_uc_pmu.c
@@ -287,12 +287,52 @@ static u64 hisi_uc_pmu_read_counter(struct hisi_pmu *uc_pmu,
return readq(uc_pmu->base + HISI_UC_CNTR_REGn(hwc->idx));
}
-static void hisi_uc_pmu_write_counter(struct hisi_pmu *uc_pmu,
+static bool hisi_uc_pmu_get_glb_en_state(struct hisi_pmu *uc_pmu)
+{
+ u32 val;
+
+ val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+ return !!FIELD_GET(HISI_UC_EVENT_GLB_EN, val);
+}
+
+static void hisi_uc_pmu_write_counter_normal(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_write_counter_quirk_v2(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc, u64 val)
+{
+ hisi_uc_pmu_start_counters(uc_pmu);
+ hisi_uc_pmu_write_counter_normal(uc_pmu, hwc, val);
+ hisi_uc_pmu_stop_counters(uc_pmu);
+}
+
+static void hisi_uc_pmu_write_counter(struct hisi_pmu *uc_pmu,
+ struct hw_perf_event *hwc, u64 val)
+{
+ bool enable = hisi_uc_pmu_get_glb_en_state(uc_pmu);
+ bool erratum = uc_pmu->identifier == HISI_PMU_V2;
+
+ /*
+ * HiSilicon UC PMU v2 suffers the erratum 162700402 that the
+ * PMU counter cannot be set due to the lack of clock under power
+ * saving mode. This will lead to error or inaccurate counts.
+ * The clock can be enabled by the PMU global enabling control.
+ * The irq handler and pmu_start() will call the function to set
+ * period. If the function under irq context, the PMU has been
+ * enabled therefore we set counter directly. Other situations
+ * the PMU is disabled, we need to enable it to turn on the
+ * counter clock to set period, and then restore PMU enable
+ * status, the counter can hold its value without a clock.
+ */
+ if (enable || !erratum)
+ hisi_uc_pmu_write_counter_normal(uc_pmu, hwc, val);
+ else
+ hisi_uc_pmu_write_counter_quirk_v2(uc_pmu, hwc, val);
+}
+
static void hisi_uc_pmu_enable_counter_int(struct hisi_pmu *uc_pmu,
struct hw_perf_event *hwc)
{
diff --git a/drivers/perf/riscv_pmu.c b/drivers/perf/riscv_pmu.c
index c78a6fd6c5..b4efdddb2a 100644
--- a/drivers/perf/riscv_pmu.c
+++ b/drivers/perf/riscv_pmu.c
@@ -313,6 +313,10 @@ static int riscv_pmu_event_init(struct perf_event *event)
u64 event_config = 0;
uint64_t cmask;
+ /* driver does not support branch stack sampling */
+ if (has_branch_stack(event))
+ return -EOPNOTSUPP;
+
hwc->flags = 0;
mapped_event = rvpmu->event_map(event, &event_config);
if (mapped_event < 0) {