| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Guangbin Huang | 7262 | 100.00% | 1 | 100.00% |
| Total | 7262 | 1 |
// SPDX-License-Identifier: GPL-2.0-only /* * This driver adds support for HNS3 PMU iEP device. Related perf events are * bandwidth, latency, packet rate, interrupt rate etc. * * Copyright (C) 2022 HiSilicon Limited */ #include <linux/bitfield.h> #include <linux/bitmap.h> #include <linux/bug.h> #include <linux/cpuhotplug.h> #include <linux/cpumask.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/io-64-nonatomic-hi-lo.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/pci-epf.h> #include <linux/perf_event.h> #include <linux/smp.h> /* registers offset address */ #define HNS3_PMU_REG_GLOBAL_CTRL 0x0000 #define HNS3_PMU_REG_CLOCK_FREQ 0x0020 #define HNS3_PMU_REG_BDF 0x0fe0 #define HNS3_PMU_REG_VERSION 0x0fe4 #define HNS3_PMU_REG_DEVICE_ID 0x0fe8 #define HNS3_PMU_REG_EVENT_OFFSET 0x1000 #define HNS3_PMU_REG_EVENT_SIZE 0x1000 #define HNS3_PMU_REG_EVENT_CTRL_LOW 0x00 #define HNS3_PMU_REG_EVENT_CTRL_HIGH 0x04 #define HNS3_PMU_REG_EVENT_INTR_STATUS 0x08 #define HNS3_PMU_REG_EVENT_INTR_MASK 0x0c #define HNS3_PMU_REG_EVENT_COUNTER 0x10 #define HNS3_PMU_REG_EVENT_EXT_COUNTER 0x18 #define HNS3_PMU_REG_EVENT_QID_CTRL 0x28 #define HNS3_PMU_REG_EVENT_QID_PARA 0x2c #define HNS3_PMU_FILTER_SUPPORT_GLOBAL BIT(0) #define HNS3_PMU_FILTER_SUPPORT_PORT BIT(1) #define HNS3_PMU_FILTER_SUPPORT_PORT_TC BIT(2) #define HNS3_PMU_FILTER_SUPPORT_FUNC BIT(3) #define HNS3_PMU_FILTER_SUPPORT_FUNC_QUEUE BIT(4) #define HNS3_PMU_FILTER_SUPPORT_FUNC_INTR BIT(5) #define HNS3_PMU_FILTER_ALL_TC 0xf #define HNS3_PMU_FILTER_ALL_QUEUE 0xffff #define HNS3_PMU_CTRL_SUBEVENT_S 4 #define HNS3_PMU_CTRL_FILTER_MODE_S 24 #define HNS3_PMU_GLOBAL_START BIT(0) #define HNS3_PMU_EVENT_STATUS_RESET BIT(11) #define HNS3_PMU_EVENT_EN BIT(12) #define HNS3_PMU_EVENT_OVERFLOW_RESTART BIT(15) #define HNS3_PMU_QID_PARA_FUNC_S 0 #define HNS3_PMU_QID_PARA_QUEUE_S 16 #define HNS3_PMU_QID_CTRL_REQ_ENABLE BIT(0) #define HNS3_PMU_QID_CTRL_DONE BIT(1) #define HNS3_PMU_QID_CTRL_MISS BIT(2) #define HNS3_PMU_INTR_MASK_OVERFLOW BIT(1) #define HNS3_PMU_MAX_HW_EVENTS 8 /* * Each hardware event contains two registers (counter and ext_counter) for * bandwidth, packet rate, latency and interrupt rate. These two registers will * be triggered to run at the same when a hardware event is enabled. The meaning * of counter and ext_counter of different event type are different, their * meaning show as follow: * * +----------------+------------------+---------------+ * | event type | counter | ext_counter | * +----------------+------------------+---------------+ * | bandwidth | byte number | cycle number | * +----------------+------------------+---------------+ * | packet rate | packet number | cycle number | * +----------------+------------------+---------------+ * | latency | cycle number | packet number | * +----------------+------------------+---------------+ * | interrupt rate | interrupt number | cycle number | * +----------------+------------------+---------------+ * * The cycle number indicates increment of counter of hardware timer, the * frequency of hardware timer can be read from hw_clk_freq file. * * Performance of each hardware event is calculated by: counter / ext_counter. * * Since processing of data is preferred to be done in userspace, we expose * ext_counter as a separate event for userspace and use bit 16 to indicate it. * For example, event 0x00001 and 0x10001 are actually one event for hardware * because bit 0-15 are same. If the bit 16 of one event is 0 means to read * counter register, otherwise means to read ext_counter register. */ /* bandwidth events */ #define HNS3_PMU_EVT_BW_SSU_EGU_BYTE_NUM 0x00001 #define HNS3_PMU_EVT_BW_SSU_EGU_TIME 0x10001 #define HNS3_PMU_EVT_BW_SSU_RPU_BYTE_NUM 0x00002 #define HNS3_PMU_EVT_BW_SSU_RPU_TIME 0x10002 #define HNS3_PMU_EVT_BW_SSU_ROCE_BYTE_NUM 0x00003 #define HNS3_PMU_EVT_BW_SSU_ROCE_TIME 0x10003 #define HNS3_PMU_EVT_BW_ROCE_SSU_BYTE_NUM 0x00004 #define HNS3_PMU_EVT_BW_ROCE_SSU_TIME 0x10004 #define HNS3_PMU_EVT_BW_TPU_SSU_BYTE_NUM 0x00005 #define HNS3_PMU_EVT_BW_TPU_SSU_TIME 0x10005 #define HNS3_PMU_EVT_BW_RPU_RCBRX_BYTE_NUM 0x00006 #define HNS3_PMU_EVT_BW_RPU_RCBRX_TIME 0x10006 #define HNS3_PMU_EVT_BW_RCBTX_TXSCH_BYTE_NUM 0x00008 #define HNS3_PMU_EVT_BW_RCBTX_TXSCH_TIME 0x10008 #define HNS3_PMU_EVT_BW_WR_FBD_BYTE_NUM 0x00009 #define HNS3_PMU_EVT_BW_WR_FBD_TIME 0x10009 #define HNS3_PMU_EVT_BW_WR_EBD_BYTE_NUM 0x0000a #define HNS3_PMU_EVT_BW_WR_EBD_TIME 0x1000a #define HNS3_PMU_EVT_BW_RD_FBD_BYTE_NUM 0x0000b #define HNS3_PMU_EVT_BW_RD_FBD_TIME 0x1000b #define HNS3_PMU_EVT_BW_RD_EBD_BYTE_NUM 0x0000c #define HNS3_PMU_EVT_BW_RD_EBD_TIME 0x1000c #define HNS3_PMU_EVT_BW_RD_PAY_M0_BYTE_NUM 0x0000d #define HNS3_PMU_EVT_BW_RD_PAY_M0_TIME 0x1000d #define HNS3_PMU_EVT_BW_RD_PAY_M1_BYTE_NUM 0x0000e #define HNS3_PMU_EVT_BW_RD_PAY_M1_TIME 0x1000e #define HNS3_PMU_EVT_BW_WR_PAY_M0_BYTE_NUM 0x0000f #define HNS3_PMU_EVT_BW_WR_PAY_M0_TIME 0x1000f #define HNS3_PMU_EVT_BW_WR_PAY_M1_BYTE_NUM 0x00010 #define HNS3_PMU_EVT_BW_WR_PAY_M1_TIME 0x10010 /* packet rate events */ #define HNS3_PMU_EVT_PPS_IGU_SSU_PACKET_NUM 0x00100 #define HNS3_PMU_EVT_PPS_IGU_SSU_TIME 0x10100 #define HNS3_PMU_EVT_PPS_SSU_EGU_PACKET_NUM 0x00101 #define HNS3_PMU_EVT_PPS_SSU_EGU_TIME 0x10101 #define HNS3_PMU_EVT_PPS_SSU_RPU_PACKET_NUM 0x00102 #define HNS3_PMU_EVT_PPS_SSU_RPU_TIME 0x10102 #define HNS3_PMU_EVT_PPS_SSU_ROCE_PACKET_NUM 0x00103 #define HNS3_PMU_EVT_PPS_SSU_ROCE_TIME 0x10103 #define HNS3_PMU_EVT_PPS_ROCE_SSU_PACKET_NUM 0x00104 #define HNS3_PMU_EVT_PPS_ROCE_SSU_TIME 0x10104 #define HNS3_PMU_EVT_PPS_TPU_SSU_PACKET_NUM 0x00105 #define HNS3_PMU_EVT_PPS_TPU_SSU_TIME 0x10105 #define HNS3_PMU_EVT_PPS_RPU_RCBRX_PACKET_NUM 0x00106 #define HNS3_PMU_EVT_PPS_RPU_RCBRX_TIME 0x10106 #define HNS3_PMU_EVT_PPS_RCBTX_TPU_PACKET_NUM 0x00107 #define HNS3_PMU_EVT_PPS_RCBTX_TPU_TIME 0x10107 #define HNS3_PMU_EVT_PPS_RCBTX_TXSCH_PACKET_NUM 0x00108 #define HNS3_PMU_EVT_PPS_RCBTX_TXSCH_TIME 0x10108 #define HNS3_PMU_EVT_PPS_WR_FBD_PACKET_NUM 0x00109 #define HNS3_PMU_EVT_PPS_WR_FBD_TIME 0x10109 #define HNS3_PMU_EVT_PPS_WR_EBD_PACKET_NUM 0x0010a #define HNS3_PMU_EVT_PPS_WR_EBD_TIME 0x1010a #define HNS3_PMU_EVT_PPS_RD_FBD_PACKET_NUM 0x0010b #define HNS3_PMU_EVT_PPS_RD_FBD_TIME 0x1010b #define HNS3_PMU_EVT_PPS_RD_EBD_PACKET_NUM 0x0010c #define HNS3_PMU_EVT_PPS_RD_EBD_TIME 0x1010c #define HNS3_PMU_EVT_PPS_RD_PAY_M0_PACKET_NUM 0x0010d #define HNS3_PMU_EVT_PPS_RD_PAY_M0_TIME 0x1010d #define HNS3_PMU_EVT_PPS_RD_PAY_M1_PACKET_NUM 0x0010e #define HNS3_PMU_EVT_PPS_RD_PAY_M1_TIME 0x1010e #define HNS3_PMU_EVT_PPS_WR_PAY_M0_PACKET_NUM 0x0010f #define HNS3_PMU_EVT_PPS_WR_PAY_M0_TIME 0x1010f #define HNS3_PMU_EVT_PPS_WR_PAY_M1_PACKET_NUM 0x00110 #define HNS3_PMU_EVT_PPS_WR_PAY_M1_TIME 0x10110 #define HNS3_PMU_EVT_PPS_NICROH_TX_PRE_PACKET_NUM 0x00111 #define HNS3_PMU_EVT_PPS_NICROH_TX_PRE_TIME 0x10111 #define HNS3_PMU_EVT_PPS_NICROH_RX_PRE_PACKET_NUM 0x00112 #define HNS3_PMU_EVT_PPS_NICROH_RX_PRE_TIME 0x10112 /* latency events */ #define HNS3_PMU_EVT_DLY_TX_PUSH_TIME 0x00202 #define HNS3_PMU_EVT_DLY_TX_PUSH_PACKET_NUM 0x10202 #define HNS3_PMU_EVT_DLY_TX_TIME 0x00204 #define HNS3_PMU_EVT_DLY_TX_PACKET_NUM 0x10204 #define HNS3_PMU_EVT_DLY_SSU_TX_NIC_TIME 0x00206 #define HNS3_PMU_EVT_DLY_SSU_TX_NIC_PACKET_NUM 0x10206 #define HNS3_PMU_EVT_DLY_SSU_TX_ROCE_TIME 0x00207 #define HNS3_PMU_EVT_DLY_SSU_TX_ROCE_PACKET_NUM 0x10207 #define HNS3_PMU_EVT_DLY_SSU_RX_NIC_TIME 0x00208 #define HNS3_PMU_EVT_DLY_SSU_RX_NIC_PACKET_NUM 0x10208 #define HNS3_PMU_EVT_DLY_SSU_RX_ROCE_TIME 0x00209 #define HNS3_PMU_EVT_DLY_SSU_RX_ROCE_PACKET_NUM 0x10209 #define HNS3_PMU_EVT_DLY_RPU_TIME 0x0020e #define HNS3_PMU_EVT_DLY_RPU_PACKET_NUM 0x1020e #define HNS3_PMU_EVT_DLY_TPU_TIME 0x0020f #define HNS3_PMU_EVT_DLY_TPU_PACKET_NUM 0x1020f #define HNS3_PMU_EVT_DLY_RPE_TIME 0x00210 #define HNS3_PMU_EVT_DLY_RPE_PACKET_NUM 0x10210 #define HNS3_PMU_EVT_DLY_TPE_TIME 0x00211 #define HNS3_PMU_EVT_DLY_TPE_PACKET_NUM 0x10211 #define HNS3_PMU_EVT_DLY_TPE_PUSH_TIME 0x00212 #define HNS3_PMU_EVT_DLY_TPE_PUSH_PACKET_NUM 0x10212 #define HNS3_PMU_EVT_DLY_WR_FBD_TIME 0x00213 #define HNS3_PMU_EVT_DLY_WR_FBD_PACKET_NUM 0x10213 #define HNS3_PMU_EVT_DLY_WR_EBD_TIME 0x00214 #define HNS3_PMU_EVT_DLY_WR_EBD_PACKET_NUM 0x10214 #define HNS3_PMU_EVT_DLY_RD_FBD_TIME 0x00215 #define HNS3_PMU_EVT_DLY_RD_FBD_PACKET_NUM 0x10215 #define HNS3_PMU_EVT_DLY_RD_EBD_TIME 0x00216 #define HNS3_PMU_EVT_DLY_RD_EBD_PACKET_NUM 0x10216 #define HNS3_PMU_EVT_DLY_RD_PAY_M0_TIME 0x00217 #define HNS3_PMU_EVT_DLY_RD_PAY_M0_PACKET_NUM 0x10217 #define HNS3_PMU_EVT_DLY_RD_PAY_M1_TIME 0x00218 #define HNS3_PMU_EVT_DLY_RD_PAY_M1_PACKET_NUM 0x10218 #define HNS3_PMU_EVT_DLY_WR_PAY_M0_TIME 0x00219 #define HNS3_PMU_EVT_DLY_WR_PAY_M0_PACKET_NUM 0x10219 #define HNS3_PMU_EVT_DLY_WR_PAY_M1_TIME 0x0021a #define HNS3_PMU_EVT_DLY_WR_PAY_M1_PACKET_NUM 0x1021a #define HNS3_PMU_EVT_DLY_MSIX_WRITE_TIME 0x0021c #define HNS3_PMU_EVT_DLY_MSIX_WRITE_PACKET_NUM 0x1021c /* interrupt rate events */ #define HNS3_PMU_EVT_PPS_MSIX_NIC_INTR_NUM 0x00300 #define HNS3_PMU_EVT_PPS_MSIX_NIC_TIME 0x10300 /* filter mode supported by each bandwidth event */ #define HNS3_PMU_FILTER_BW_SSU_EGU 0x07 #define HNS3_PMU_FILTER_BW_SSU_RPU 0x1f #define HNS3_PMU_FILTER_BW_SSU_ROCE 0x0f #define HNS3_PMU_FILTER_BW_ROCE_SSU 0x0f #define HNS3_PMU_FILTER_BW_TPU_SSU 0x1f #define HNS3_PMU_FILTER_BW_RPU_RCBRX 0x11 #define HNS3_PMU_FILTER_BW_RCBTX_TXSCH 0x11 #define HNS3_PMU_FILTER_BW_WR_FBD 0x1b #define HNS3_PMU_FILTER_BW_WR_EBD 0x11 #define HNS3_PMU_FILTER_BW_RD_FBD 0x01 #define HNS3_PMU_FILTER_BW_RD_EBD 0x1b #define HNS3_PMU_FILTER_BW_RD_PAY_M0 0x01 #define HNS3_PMU_FILTER_BW_RD_PAY_M1 0x01 #define HNS3_PMU_FILTER_BW_WR_PAY_M0 0x01 #define HNS3_PMU_FILTER_BW_WR_PAY_M1 0x01 /* filter mode supported by each packet rate event */ #define HNS3_PMU_FILTER_PPS_IGU_SSU 0x07 #define HNS3_PMU_FILTER_PPS_SSU_EGU 0x07 #define HNS3_PMU_FILTER_PPS_SSU_RPU 0x1f #define HNS3_PMU_FILTER_PPS_SSU_ROCE 0x0f #define HNS3_PMU_FILTER_PPS_ROCE_SSU 0x0f #define HNS3_PMU_FILTER_PPS_TPU_SSU 0x1f #define HNS3_PMU_FILTER_PPS_RPU_RCBRX 0x11 #define HNS3_PMU_FILTER_PPS_RCBTX_TPU 0x1f #define HNS3_PMU_FILTER_PPS_RCBTX_TXSCH 0x11 #define HNS3_PMU_FILTER_PPS_WR_FBD 0x1b #define HNS3_PMU_FILTER_PPS_WR_EBD 0x11 #define HNS3_PMU_FILTER_PPS_RD_FBD 0x01 #define HNS3_PMU_FILTER_PPS_RD_EBD 0x1b #define HNS3_PMU_FILTER_PPS_RD_PAY_M0 0x01 #define HNS3_PMU_FILTER_PPS_RD_PAY_M1 0x01 #define HNS3_PMU_FILTER_PPS_WR_PAY_M0 0x01 #define HNS3_PMU_FILTER_PPS_WR_PAY_M1 0x01 #define HNS3_PMU_FILTER_PPS_NICROH_TX_PRE 0x01 #define HNS3_PMU_FILTER_PPS_NICROH_RX_PRE 0x01 /* filter mode supported by each latency event */ #define HNS3_PMU_FILTER_DLY_TX_PUSH 0x01 #define HNS3_PMU_FILTER_DLY_TX 0x01 #define HNS3_PMU_FILTER_DLY_SSU_TX_NIC 0x07 #define HNS3_PMU_FILTER_DLY_SSU_TX_ROCE 0x07 #define HNS3_PMU_FILTER_DLY_SSU_RX_NIC 0x07 #define HNS3_PMU_FILTER_DLY_SSU_RX_ROCE 0x07 #define HNS3_PMU_FILTER_DLY_RPU 0x11 #define HNS3_PMU_FILTER_DLY_TPU 0x1f #define HNS3_PMU_FILTER_DLY_RPE 0x01 #define HNS3_PMU_FILTER_DLY_TPE 0x0b #define HNS3_PMU_FILTER_DLY_TPE_PUSH 0x1b #define HNS3_PMU_FILTER_DLY_WR_FBD 0x1b #define HNS3_PMU_FILTER_DLY_WR_EBD 0x11 #define HNS3_PMU_FILTER_DLY_RD_FBD 0x01 #define HNS3_PMU_FILTER_DLY_RD_EBD 0x1b #define HNS3_PMU_FILTER_DLY_RD_PAY_M0 0x01 #define HNS3_PMU_FILTER_DLY_RD_PAY_M1 0x01 #define HNS3_PMU_FILTER_DLY_WR_PAY_M0 0x01 #define HNS3_PMU_FILTER_DLY_WR_PAY_M1 0x01 #define HNS3_PMU_FILTER_DLY_MSIX_WRITE 0x01 /* filter mode supported by each interrupt rate event */ #define HNS3_PMU_FILTER_INTR_MSIX_NIC 0x01 enum hns3_pmu_hw_filter_mode { HNS3_PMU_HW_FILTER_GLOBAL, HNS3_PMU_HW_FILTER_PORT, HNS3_PMU_HW_FILTER_PORT_TC, HNS3_PMU_HW_FILTER_FUNC, HNS3_PMU_HW_FILTER_FUNC_QUEUE, HNS3_PMU_HW_FILTER_FUNC_INTR, }; struct hns3_pmu_event_attr { u32 event; u16 filter_support; }; struct hns3_pmu { struct perf_event *hw_events[HNS3_PMU_MAX_HW_EVENTS]; struct hlist_node node; struct pci_dev *pdev; struct pmu pmu; void __iomem *base; int irq; int on_cpu; u32 identifier; u32 hw_clk_freq; /* hardware clock frequency of PMU */ /* maximum and minimum bdf allowed by PMU */ u16 bdf_min; u16 bdf_max; }; #define to_hns3_pmu(p) (container_of((p), struct hns3_pmu, pmu)) #define GET_PCI_DEVFN(bdf) ((bdf) & 0xff) #define FILTER_CONDITION_PORT(port) ((1 << (port)) & 0xff) #define FILTER_CONDITION_PORT_TC(port, tc) (((port) << 3) | ((tc) & 0x07)) #define FILTER_CONDITION_FUNC_INTR(func, intr) (((intr) << 8) | (func)) #define HNS3_PMU_FILTER_ATTR(_name, _config, _start, _end) \ static inline u64 hns3_pmu_get_##_name(struct perf_event *event) \ { \ return FIELD_GET(GENMASK_ULL(_end, _start), \ event->attr._config); \ } HNS3_PMU_FILTER_ATTR(subevent, config, 0, 7); HNS3_PMU_FILTER_ATTR(event_type, config, 8, 15); HNS3_PMU_FILTER_ATTR(ext_counter_used, config, 16, 16); HNS3_PMU_FILTER_ATTR(port, config1, 0, 3); HNS3_PMU_FILTER_ATTR(tc, config1, 4, 7); HNS3_PMU_FILTER_ATTR(bdf, config1, 8, 23); HNS3_PMU_FILTER_ATTR(queue, config1, 24, 39); HNS3_PMU_FILTER_ATTR(intr, config1, 40, 51); HNS3_PMU_FILTER_ATTR(global, config1, 52, 52); #define HNS3_BW_EVT_BYTE_NUM(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_BW_##_name##_BYTE_NUM, \ HNS3_PMU_FILTER_BW_##_name}) #define HNS3_BW_EVT_TIME(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_BW_##_name##_TIME, \ HNS3_PMU_FILTER_BW_##_name}) #define HNS3_PPS_EVT_PACKET_NUM(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_PPS_##_name##_PACKET_NUM, \ HNS3_PMU_FILTER_PPS_##_name}) #define HNS3_PPS_EVT_TIME(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_PPS_##_name##_TIME, \ HNS3_PMU_FILTER_PPS_##_name}) #define HNS3_DLY_EVT_TIME(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_DLY_##_name##_TIME, \ HNS3_PMU_FILTER_DLY_##_name}) #define HNS3_DLY_EVT_PACKET_NUM(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_DLY_##_name##_PACKET_NUM, \ HNS3_PMU_FILTER_DLY_##_name}) #define HNS3_INTR_EVT_INTR_NUM(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_PPS_##_name##_INTR_NUM, \ HNS3_PMU_FILTER_INTR_##_name}) #define HNS3_INTR_EVT_TIME(_name) (&(struct hns3_pmu_event_attr) {\ HNS3_PMU_EVT_PPS_##_name##_TIME, \ HNS3_PMU_FILTER_INTR_##_name}) static ssize_t hns3_pmu_format_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dev_ext_attribute *eattr; eattr = container_of(attr, struct dev_ext_attribute, attr); return sysfs_emit(buf, "%s\n", (char *)eattr->var); } static ssize_t hns3_pmu_event_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu_event_attr *event; struct dev_ext_attribute *eattr; eattr = container_of(attr, struct dev_ext_attribute, attr); event = eattr->var; return sysfs_emit(buf, "config=0x%x\n", event->event); } static ssize_t hns3_pmu_filter_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu_event_attr *event; struct dev_ext_attribute *eattr; int len; eattr = container_of(attr, struct dev_ext_attribute, attr); event = eattr->var; len = sysfs_emit_at(buf, 0, "filter mode supported: "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_GLOBAL) len += sysfs_emit_at(buf, len, "global "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_PORT) len += sysfs_emit_at(buf, len, "port "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_PORT_TC) len += sysfs_emit_at(buf, len, "port-tc "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC) len += sysfs_emit_at(buf, len, "func "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC_QUEUE) len += sysfs_emit_at(buf, len, "func-queue "); if (event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC_INTR) len += sysfs_emit_at(buf, len, "func-intr "); len += sysfs_emit_at(buf, len, "\n"); return len; } #define HNS3_PMU_ATTR(_name, _func, _config) \ (&((struct dev_ext_attribute[]) { \ { __ATTR(_name, 0444, _func, NULL), (void *)_config } \ })[0].attr.attr) #define HNS3_PMU_FORMAT_ATTR(_name, _format) \ HNS3_PMU_ATTR(_name, hns3_pmu_format_show, (void *)_format) #define HNS3_PMU_EVENT_ATTR(_name, _event) \ HNS3_PMU_ATTR(_name, hns3_pmu_event_show, (void *)_event) #define HNS3_PMU_FLT_MODE_ATTR(_name, _event) \ HNS3_PMU_ATTR(_name, hns3_pmu_filter_mode_show, (void *)_event) #define HNS3_PMU_BW_EVT_PAIR(_name, _macro) \ HNS3_PMU_EVENT_ATTR(_name##_byte_num, HNS3_BW_EVT_BYTE_NUM(_macro)), \ HNS3_PMU_EVENT_ATTR(_name##_time, HNS3_BW_EVT_TIME(_macro)) #define HNS3_PMU_PPS_EVT_PAIR(_name, _macro) \ HNS3_PMU_EVENT_ATTR(_name##_packet_num, HNS3_PPS_EVT_PACKET_NUM(_macro)), \ HNS3_PMU_EVENT_ATTR(_name##_time, HNS3_PPS_EVT_TIME(_macro)) #define HNS3_PMU_DLY_EVT_PAIR(_name, _macro) \ HNS3_PMU_EVENT_ATTR(_name##_time, HNS3_DLY_EVT_TIME(_macro)), \ HNS3_PMU_EVENT_ATTR(_name##_packet_num, HNS3_DLY_EVT_PACKET_NUM(_macro)) #define HNS3_PMU_INTR_EVT_PAIR(_name, _macro) \ HNS3_PMU_EVENT_ATTR(_name##_intr_num, HNS3_INTR_EVT_INTR_NUM(_macro)), \ HNS3_PMU_EVENT_ATTR(_name##_time, HNS3_INTR_EVT_TIME(_macro)) #define HNS3_PMU_BW_FLT_MODE_PAIR(_name, _macro) \ HNS3_PMU_FLT_MODE_ATTR(_name##_byte_num, HNS3_BW_EVT_BYTE_NUM(_macro)), \ HNS3_PMU_FLT_MODE_ATTR(_name##_time, HNS3_BW_EVT_TIME(_macro)) #define HNS3_PMU_PPS_FLT_MODE_PAIR(_name, _macro) \ HNS3_PMU_FLT_MODE_ATTR(_name##_packet_num, HNS3_PPS_EVT_PACKET_NUM(_macro)), \ HNS3_PMU_FLT_MODE_ATTR(_name##_time, HNS3_PPS_EVT_TIME(_macro)) #define HNS3_PMU_DLY_FLT_MODE_PAIR(_name, _macro) \ HNS3_PMU_FLT_MODE_ATTR(_name##_time, HNS3_DLY_EVT_TIME(_macro)), \ HNS3_PMU_FLT_MODE_ATTR(_name##_packet_num, HNS3_DLY_EVT_PACKET_NUM(_macro)) #define HNS3_PMU_INTR_FLT_MODE_PAIR(_name, _macro) \ HNS3_PMU_FLT_MODE_ATTR(_name##_intr_num, HNS3_INTR_EVT_INTR_NUM(_macro)), \ HNS3_PMU_FLT_MODE_ATTR(_name##_time, HNS3_INTR_EVT_TIME(_macro)) static u8 hns3_pmu_hw_filter_modes[] = { HNS3_PMU_HW_FILTER_GLOBAL, HNS3_PMU_HW_FILTER_PORT, HNS3_PMU_HW_FILTER_PORT_TC, HNS3_PMU_HW_FILTER_FUNC, HNS3_PMU_HW_FILTER_FUNC_QUEUE, HNS3_PMU_HW_FILTER_FUNC_INTR, }; #define HNS3_PMU_SET_HW_FILTER(_hwc, _mode) \ ((_hwc)->addr_filters = (void *)&hns3_pmu_hw_filter_modes[(_mode)]) static ssize_t identifier_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(dev_get_drvdata(dev)); return sysfs_emit(buf, "0x%x\n", hns3_pmu->identifier); } static DEVICE_ATTR_RO(identifier); static ssize_t cpumask_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(dev_get_drvdata(dev)); return sysfs_emit(buf, "%d\n", hns3_pmu->on_cpu); } static DEVICE_ATTR_RO(cpumask); static ssize_t bdf_min_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(dev_get_drvdata(dev)); u16 bdf = hns3_pmu->bdf_min; return sysfs_emit(buf, "%02x:%02x.%x\n", PCI_BUS_NUM(bdf), PCI_SLOT(bdf), PCI_FUNC(bdf)); } static DEVICE_ATTR_RO(bdf_min); static ssize_t bdf_max_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(dev_get_drvdata(dev)); u16 bdf = hns3_pmu->bdf_max; return sysfs_emit(buf, "%02x:%02x.%x\n", PCI_BUS_NUM(bdf), PCI_SLOT(bdf), PCI_FUNC(bdf)); } static DEVICE_ATTR_RO(bdf_max); static ssize_t hw_clk_freq_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(dev_get_drvdata(dev)); return sysfs_emit(buf, "%u\n", hns3_pmu->hw_clk_freq); } static DEVICE_ATTR_RO(hw_clk_freq); static struct attribute *hns3_pmu_events_attr[] = { /* bandwidth events */ HNS3_PMU_BW_EVT_PAIR(bw_ssu_egu, SSU_EGU), HNS3_PMU_BW_EVT_PAIR(bw_ssu_rpu, SSU_RPU), HNS3_PMU_BW_EVT_PAIR(bw_ssu_roce, SSU_ROCE), HNS3_PMU_BW_EVT_PAIR(bw_roce_ssu, ROCE_SSU), HNS3_PMU_BW_EVT_PAIR(bw_tpu_ssu, TPU_SSU), HNS3_PMU_BW_EVT_PAIR(bw_rpu_rcbrx, RPU_RCBRX), HNS3_PMU_BW_EVT_PAIR(bw_rcbtx_txsch, RCBTX_TXSCH), HNS3_PMU_BW_EVT_PAIR(bw_wr_fbd, WR_FBD), HNS3_PMU_BW_EVT_PAIR(bw_wr_ebd, WR_EBD), HNS3_PMU_BW_EVT_PAIR(bw_rd_fbd, RD_FBD), HNS3_PMU_BW_EVT_PAIR(bw_rd_ebd, RD_EBD), HNS3_PMU_BW_EVT_PAIR(bw_rd_pay_m0, RD_PAY_M0), HNS3_PMU_BW_EVT_PAIR(bw_rd_pay_m1, RD_PAY_M1), HNS3_PMU_BW_EVT_PAIR(bw_wr_pay_m0, WR_PAY_M0), HNS3_PMU_BW_EVT_PAIR(bw_wr_pay_m1, WR_PAY_M1), /* packet rate events */ HNS3_PMU_PPS_EVT_PAIR(pps_igu_ssu, IGU_SSU), HNS3_PMU_PPS_EVT_PAIR(pps_ssu_egu, SSU_EGU), HNS3_PMU_PPS_EVT_PAIR(pps_ssu_rpu, SSU_RPU), HNS3_PMU_PPS_EVT_PAIR(pps_ssu_roce, SSU_ROCE), HNS3_PMU_PPS_EVT_PAIR(pps_roce_ssu, ROCE_SSU), HNS3_PMU_PPS_EVT_PAIR(pps_tpu_ssu, TPU_SSU), HNS3_PMU_PPS_EVT_PAIR(pps_rpu_rcbrx, RPU_RCBRX), HNS3_PMU_PPS_EVT_PAIR(pps_rcbtx_tpu, RCBTX_TPU), HNS3_PMU_PPS_EVT_PAIR(pps_rcbtx_txsch, RCBTX_TXSCH), HNS3_PMU_PPS_EVT_PAIR(pps_wr_fbd, WR_FBD), HNS3_PMU_PPS_EVT_PAIR(pps_wr_ebd, WR_EBD), HNS3_PMU_PPS_EVT_PAIR(pps_rd_fbd, RD_FBD), HNS3_PMU_PPS_EVT_PAIR(pps_rd_ebd, RD_EBD), HNS3_PMU_PPS_EVT_PAIR(pps_rd_pay_m0, RD_PAY_M0), HNS3_PMU_PPS_EVT_PAIR(pps_rd_pay_m1, RD_PAY_M1), HNS3_PMU_PPS_EVT_PAIR(pps_wr_pay_m0, WR_PAY_M0), HNS3_PMU_PPS_EVT_PAIR(pps_wr_pay_m1, WR_PAY_M1), HNS3_PMU_PPS_EVT_PAIR(pps_intr_nicroh_tx_pre, NICROH_TX_PRE), HNS3_PMU_PPS_EVT_PAIR(pps_intr_nicroh_rx_pre, NICROH_RX_PRE), /* latency events */ HNS3_PMU_DLY_EVT_PAIR(dly_tx_push_to_mac, TX_PUSH), HNS3_PMU_DLY_EVT_PAIR(dly_tx_normal_to_mac, TX), HNS3_PMU_DLY_EVT_PAIR(dly_ssu_tx_th_nic, SSU_TX_NIC), HNS3_PMU_DLY_EVT_PAIR(dly_ssu_tx_th_roce, SSU_TX_ROCE), HNS3_PMU_DLY_EVT_PAIR(dly_ssu_rx_th_nic, SSU_RX_NIC), HNS3_PMU_DLY_EVT_PAIR(dly_ssu_rx_th_roce, SSU_RX_ROCE), HNS3_PMU_DLY_EVT_PAIR(dly_rpu, RPU), HNS3_PMU_DLY_EVT_PAIR(dly_tpu, TPU), HNS3_PMU_DLY_EVT_PAIR(dly_rpe, RPE), HNS3_PMU_DLY_EVT_PAIR(dly_tpe_normal, TPE), HNS3_PMU_DLY_EVT_PAIR(dly_tpe_push, TPE_PUSH), HNS3_PMU_DLY_EVT_PAIR(dly_wr_fbd, WR_FBD), HNS3_PMU_DLY_EVT_PAIR(dly_wr_ebd, WR_EBD), HNS3_PMU_DLY_EVT_PAIR(dly_rd_fbd, RD_FBD), HNS3_PMU_DLY_EVT_PAIR(dly_rd_ebd, RD_EBD), HNS3_PMU_DLY_EVT_PAIR(dly_rd_pay_m0, RD_PAY_M0), HNS3_PMU_DLY_EVT_PAIR(dly_rd_pay_m1, RD_PAY_M1), HNS3_PMU_DLY_EVT_PAIR(dly_wr_pay_m0, WR_PAY_M0), HNS3_PMU_DLY_EVT_PAIR(dly_wr_pay_m1, WR_PAY_M1), HNS3_PMU_DLY_EVT_PAIR(dly_msix_write, MSIX_WRITE), /* interrupt rate events */ HNS3_PMU_INTR_EVT_PAIR(pps_intr_msix_nic, MSIX_NIC), NULL }; static struct attribute *hns3_pmu_filter_mode_attr[] = { /* bandwidth events */ HNS3_PMU_BW_FLT_MODE_PAIR(bw_ssu_egu, SSU_EGU), HNS3_PMU_BW_FLT_MODE_PAIR(bw_ssu_rpu, SSU_RPU), HNS3_PMU_BW_FLT_MODE_PAIR(bw_ssu_roce, SSU_ROCE), HNS3_PMU_BW_FLT_MODE_PAIR(bw_roce_ssu, ROCE_SSU), HNS3_PMU_BW_FLT_MODE_PAIR(bw_tpu_ssu, TPU_SSU), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rpu_rcbrx, RPU_RCBRX), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rcbtx_txsch, RCBTX_TXSCH), HNS3_PMU_BW_FLT_MODE_PAIR(bw_wr_fbd, WR_FBD), HNS3_PMU_BW_FLT_MODE_PAIR(bw_wr_ebd, WR_EBD), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rd_fbd, RD_FBD), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rd_ebd, RD_EBD), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rd_pay_m0, RD_PAY_M0), HNS3_PMU_BW_FLT_MODE_PAIR(bw_rd_pay_m1, RD_PAY_M1), HNS3_PMU_BW_FLT_MODE_PAIR(bw_wr_pay_m0, WR_PAY_M0), HNS3_PMU_BW_FLT_MODE_PAIR(bw_wr_pay_m1, WR_PAY_M1), /* packet rate events */ HNS3_PMU_PPS_FLT_MODE_PAIR(pps_igu_ssu, IGU_SSU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_ssu_egu, SSU_EGU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_ssu_rpu, SSU_RPU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_ssu_roce, SSU_ROCE), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_roce_ssu, ROCE_SSU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_tpu_ssu, TPU_SSU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rpu_rcbrx, RPU_RCBRX), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rcbtx_tpu, RCBTX_TPU), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rcbtx_txsch, RCBTX_TXSCH), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_wr_fbd, WR_FBD), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_wr_ebd, WR_EBD), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rd_fbd, RD_FBD), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rd_ebd, RD_EBD), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rd_pay_m0, RD_PAY_M0), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_rd_pay_m1, RD_PAY_M1), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_wr_pay_m0, WR_PAY_M0), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_wr_pay_m1, WR_PAY_M1), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_intr_nicroh_tx_pre, NICROH_TX_PRE), HNS3_PMU_PPS_FLT_MODE_PAIR(pps_intr_nicroh_rx_pre, NICROH_RX_PRE), /* latency events */ HNS3_PMU_DLY_FLT_MODE_PAIR(dly_tx_push_to_mac, TX_PUSH), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_tx_normal_to_mac, TX), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_ssu_tx_th_nic, SSU_TX_NIC), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_ssu_tx_th_roce, SSU_TX_ROCE), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_ssu_rx_th_nic, SSU_RX_NIC), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_ssu_rx_th_roce, SSU_RX_ROCE), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rpu, RPU), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_tpu, TPU), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rpe, RPE), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_tpe_normal, TPE), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_tpe_push, TPE_PUSH), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_wr_fbd, WR_FBD), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_wr_ebd, WR_EBD), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rd_fbd, RD_FBD), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rd_ebd, RD_EBD), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rd_pay_m0, RD_PAY_M0), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_rd_pay_m1, RD_PAY_M1), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_wr_pay_m0, WR_PAY_M0), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_wr_pay_m1, WR_PAY_M1), HNS3_PMU_DLY_FLT_MODE_PAIR(dly_msix_write, MSIX_WRITE), /* interrupt rate events */ HNS3_PMU_INTR_FLT_MODE_PAIR(pps_intr_msix_nic, MSIX_NIC), NULL }; static struct attribute_group hns3_pmu_events_group = { .name = "events", .attrs = hns3_pmu_events_attr, }; static struct attribute_group hns3_pmu_filter_mode_group = { .name = "filtermode", .attrs = hns3_pmu_filter_mode_attr, }; static struct attribute *hns3_pmu_format_attr[] = { HNS3_PMU_FORMAT_ATTR(subevent, "config:0-7"), HNS3_PMU_FORMAT_ATTR(event_type, "config:8-15"), HNS3_PMU_FORMAT_ATTR(ext_counter_used, "config:16"), HNS3_PMU_FORMAT_ATTR(port, "config1:0-3"), HNS3_PMU_FORMAT_ATTR(tc, "config1:4-7"), HNS3_PMU_FORMAT_ATTR(bdf, "config1:8-23"), HNS3_PMU_FORMAT_ATTR(queue, "config1:24-39"), HNS3_PMU_FORMAT_ATTR(intr, "config1:40-51"), HNS3_PMU_FORMAT_ATTR(global, "config1:52"), NULL }; static struct attribute_group hns3_pmu_format_group = { .name = "format", .attrs = hns3_pmu_format_attr, }; static struct attribute *hns3_pmu_cpumask_attrs[] = { &dev_attr_cpumask.attr, NULL }; static struct attribute_group hns3_pmu_cpumask_attr_group = { .attrs = hns3_pmu_cpumask_attrs, }; static struct attribute *hns3_pmu_identifier_attrs[] = { &dev_attr_identifier.attr, NULL }; static struct attribute_group hns3_pmu_identifier_attr_group = { .attrs = hns3_pmu_identifier_attrs, }; static struct attribute *hns3_pmu_bdf_range_attrs[] = { &dev_attr_bdf_min.attr, &dev_attr_bdf_max.attr, NULL }; static struct attribute_group hns3_pmu_bdf_range_attr_group = { .attrs = hns3_pmu_bdf_range_attrs, }; static struct attribute *hns3_pmu_hw_clk_freq_attrs[] = { &dev_attr_hw_clk_freq.attr, NULL }; static struct attribute_group hns3_pmu_hw_clk_freq_attr_group = { .attrs = hns3_pmu_hw_clk_freq_attrs, }; static const struct attribute_group *hns3_pmu_attr_groups[] = { &hns3_pmu_events_group, &hns3_pmu_filter_mode_group, &hns3_pmu_format_group, &hns3_pmu_cpumask_attr_group, &hns3_pmu_identifier_attr_group, &hns3_pmu_bdf_range_attr_group, &hns3_pmu_hw_clk_freq_attr_group, NULL }; static u32 hns3_pmu_get_event(struct perf_event *event) { return hns3_pmu_get_ext_counter_used(event) << 16 | hns3_pmu_get_event_type(event) << 8 | hns3_pmu_get_subevent(event); } static u32 hns3_pmu_get_real_event(struct perf_event *event) { return hns3_pmu_get_event_type(event) << 8 | hns3_pmu_get_subevent(event); } static u32 hns3_pmu_get_offset(u32 offset, u32 idx) { return offset + HNS3_PMU_REG_EVENT_OFFSET + HNS3_PMU_REG_EVENT_SIZE * idx; } static u32 hns3_pmu_readl(struct hns3_pmu *hns3_pmu, u32 reg_offset, u32 idx) { u32 offset = hns3_pmu_get_offset(reg_offset, idx); return readl(hns3_pmu->base + offset); } static void hns3_pmu_writel(struct hns3_pmu *hns3_pmu, u32 reg_offset, u32 idx, u32 val) { u32 offset = hns3_pmu_get_offset(reg_offset, idx); writel(val, hns3_pmu->base + offset); } static u64 hns3_pmu_readq(struct hns3_pmu *hns3_pmu, u32 reg_offset, u32 idx) { u32 offset = hns3_pmu_get_offset(reg_offset, idx); return readq(hns3_pmu->base + offset); } static void hns3_pmu_writeq(struct hns3_pmu *hns3_pmu, u32 reg_offset, u32 idx, u64 val) { u32 offset = hns3_pmu_get_offset(reg_offset, idx); writeq(val, hns3_pmu->base + offset); } static bool hns3_pmu_cmp_event(struct perf_event *target, struct perf_event *event) { return hns3_pmu_get_real_event(target) == hns3_pmu_get_real_event(event); } static int hns3_pmu_find_related_event_idx(struct hns3_pmu *hns3_pmu, struct perf_event *event) { struct perf_event *sibling; int hw_event_used = 0; int idx; for (idx = 0; idx < HNS3_PMU_MAX_HW_EVENTS; idx++) { sibling = hns3_pmu->hw_events[idx]; if (!sibling) continue; hw_event_used++; if (!hns3_pmu_cmp_event(sibling, event)) continue; /* Related events is used in group */ if (sibling->group_leader == event->group_leader) return idx; } /* No related event and all hardware events are used up */ if (hw_event_used >= HNS3_PMU_MAX_HW_EVENTS) return -EBUSY; /* No related event and there is extra hardware events can be use */ return -ENOENT; } static int hns3_pmu_get_event_idx(struct hns3_pmu *hns3_pmu) { int idx; for (idx = 0; idx < HNS3_PMU_MAX_HW_EVENTS; idx++) { if (!hns3_pmu->hw_events[idx]) return idx; } return -EBUSY; } static bool hns3_pmu_valid_bdf(struct hns3_pmu *hns3_pmu, u16 bdf) { struct pci_dev *pdev; if (bdf < hns3_pmu->bdf_min || bdf > hns3_pmu->bdf_max) { pci_err(hns3_pmu->pdev, "Invalid EP device: %#x!\n", bdf); return false; } pdev = pci_get_domain_bus_and_slot(pci_domain_nr(hns3_pmu->pdev->bus), PCI_BUS_NUM(bdf), GET_PCI_DEVFN(bdf)); if (!pdev) { pci_err(hns3_pmu->pdev, "Nonexistent EP device: %#x!\n", bdf); return false; } pci_dev_put(pdev); return true; } static void hns3_pmu_set_qid_para(struct hns3_pmu *hns3_pmu, u32 idx, u16 bdf, u16 queue) { u32 val; val = GET_PCI_DEVFN(bdf); val |= (u32)queue << HNS3_PMU_QID_PARA_QUEUE_S; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_QID_PARA, idx, val); } static bool hns3_pmu_qid_req_start(struct hns3_pmu *hns3_pmu, u32 idx) { bool queue_id_valid = false; u32 reg_qid_ctrl, val; int err; /* enable queue id request */ hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_QID_CTRL, idx, HNS3_PMU_QID_CTRL_REQ_ENABLE); reg_qid_ctrl = hns3_pmu_get_offset(HNS3_PMU_REG_EVENT_QID_CTRL, idx); err = readl_poll_timeout(hns3_pmu->base + reg_qid_ctrl, val, val & HNS3_PMU_QID_CTRL_DONE, 1, 1000); if (err == -ETIMEDOUT) { pci_err(hns3_pmu->pdev, "QID request timeout!\n"); goto out; } queue_id_valid = !(val & HNS3_PMU_QID_CTRL_MISS); out: /* disable qid request and clear status */ hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_QID_CTRL, idx, 0); return queue_id_valid; } static bool hns3_pmu_valid_queue(struct hns3_pmu *hns3_pmu, u32 idx, u16 bdf, u16 queue) { hns3_pmu_set_qid_para(hns3_pmu, idx, bdf, queue); return hns3_pmu_qid_req_start(hns3_pmu, idx); } static struct hns3_pmu_event_attr *hns3_pmu_get_pmu_event(u32 event) { struct hns3_pmu_event_attr *pmu_event; struct dev_ext_attribute *eattr; struct device_attribute *dattr; struct attribute *attr; u32 i; for (i = 0; i < ARRAY_SIZE(hns3_pmu_events_attr) - 1; i++) { attr = hns3_pmu_events_attr[i]; dattr = container_of(attr, struct device_attribute, attr); eattr = container_of(dattr, struct dev_ext_attribute, attr); pmu_event = eattr->var; if (event == pmu_event->event) return pmu_event; } return NULL; } static int hns3_pmu_set_func_mode(struct perf_event *event, struct hns3_pmu *hns3_pmu) { struct hw_perf_event *hwc = &event->hw; u16 bdf = hns3_pmu_get_bdf(event); if (!hns3_pmu_valid_bdf(hns3_pmu, bdf)) return -ENOENT; HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_FUNC); return 0; } static int hns3_pmu_set_func_queue_mode(struct perf_event *event, struct hns3_pmu *hns3_pmu) { u16 queue_id = hns3_pmu_get_queue(event); struct hw_perf_event *hwc = &event->hw; u16 bdf = hns3_pmu_get_bdf(event); if (!hns3_pmu_valid_bdf(hns3_pmu, bdf)) return -ENOENT; if (!hns3_pmu_valid_queue(hns3_pmu, hwc->idx, bdf, queue_id)) { pci_err(hns3_pmu->pdev, "Invalid queue: %u\n", queue_id); return -ENOENT; } HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_FUNC_QUEUE); return 0; } static bool hns3_pmu_is_enabled_global_mode(struct perf_event *event, struct hns3_pmu_event_attr *pmu_event) { u8 global = hns3_pmu_get_global(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_GLOBAL)) return false; return global; } static bool hns3_pmu_is_enabled_func_mode(struct perf_event *event, struct hns3_pmu_event_attr *pmu_event) { u16 queue_id = hns3_pmu_get_queue(event); u16 bdf = hns3_pmu_get_bdf(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC)) return false; else if (queue_id != HNS3_PMU_FILTER_ALL_QUEUE) return false; return bdf; } static bool hns3_pmu_is_enabled_func_queue_mode(struct perf_event *event, struct hns3_pmu_event_attr *pmu_event) { u16 queue_id = hns3_pmu_get_queue(event); u16 bdf = hns3_pmu_get_bdf(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC_QUEUE)) return false; else if (queue_id == HNS3_PMU_FILTER_ALL_QUEUE) return false; return bdf; } static bool hns3_pmu_is_enabled_port_mode(struct perf_event *event, struct hns3_pmu_event_attr *pmu_event) { u8 tc_id = hns3_pmu_get_tc(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_PORT)) return false; return tc_id == HNS3_PMU_FILTER_ALL_TC; } static bool hns3_pmu_is_enabled_port_tc_mode(struct perf_event *event, struct hns3_pmu_event_attr *pmu_event) { u8 tc_id = hns3_pmu_get_tc(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_PORT_TC)) return false; return tc_id != HNS3_PMU_FILTER_ALL_TC; } static bool hns3_pmu_is_enabled_func_intr_mode(struct perf_event *event, struct hns3_pmu *hns3_pmu, struct hns3_pmu_event_attr *pmu_event) { u16 bdf = hns3_pmu_get_bdf(event); if (!(pmu_event->filter_support & HNS3_PMU_FILTER_SUPPORT_FUNC_INTR)) return false; return hns3_pmu_valid_bdf(hns3_pmu, bdf); } static int hns3_pmu_select_filter_mode(struct perf_event *event, struct hns3_pmu *hns3_pmu) { u32 event_id = hns3_pmu_get_event(event); struct hw_perf_event *hwc = &event->hw; struct hns3_pmu_event_attr *pmu_event; pmu_event = hns3_pmu_get_pmu_event(event_id); if (!pmu_event) { pci_err(hns3_pmu->pdev, "Invalid pmu event\n"); return -ENOENT; } if (hns3_pmu_is_enabled_global_mode(event, pmu_event)) { HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_GLOBAL); return 0; } if (hns3_pmu_is_enabled_func_mode(event, pmu_event)) return hns3_pmu_set_func_mode(event, hns3_pmu); if (hns3_pmu_is_enabled_func_queue_mode(event, pmu_event)) return hns3_pmu_set_func_queue_mode(event, hns3_pmu); if (hns3_pmu_is_enabled_port_mode(event, pmu_event)) { HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_PORT); return 0; } if (hns3_pmu_is_enabled_port_tc_mode(event, pmu_event)) { HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_PORT_TC); return 0; } if (hns3_pmu_is_enabled_func_intr_mode(event, hns3_pmu, pmu_event)) { HNS3_PMU_SET_HW_FILTER(hwc, HNS3_PMU_HW_FILTER_FUNC_INTR); return 0; } return -ENOENT; } static bool hns3_pmu_validate_event_group(struct perf_event *event) { struct perf_event *sibling, *leader = event->group_leader; struct perf_event *event_group[HNS3_PMU_MAX_HW_EVENTS]; int counters = 1; int num; event_group[0] = leader; if (!is_software_event(leader)) { if (leader->pmu != event->pmu) return false; if (leader != event && !hns3_pmu_cmp_event(leader, event)) event_group[counters++] = event; } for_each_sibling_event(sibling, event->group_leader) { if (is_software_event(sibling)) continue; if (sibling->pmu != event->pmu) return false; for (num = 0; num < counters; num++) { if (hns3_pmu_cmp_event(event_group[num], sibling)) break; } if (num == counters) event_group[counters++] = sibling; } return counters <= HNS3_PMU_MAX_HW_EVENTS; } static u32 hns3_pmu_get_filter_condition(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; u16 intr_id = hns3_pmu_get_intr(event); u8 port_id = hns3_pmu_get_port(event); u16 bdf = hns3_pmu_get_bdf(event); u8 tc_id = hns3_pmu_get_tc(event); u8 filter_mode; filter_mode = *(u8 *)hwc->addr_filters; switch (filter_mode) { case HNS3_PMU_HW_FILTER_PORT: return FILTER_CONDITION_PORT(port_id); case HNS3_PMU_HW_FILTER_PORT_TC: return FILTER_CONDITION_PORT_TC(port_id, tc_id); case HNS3_PMU_HW_FILTER_FUNC: case HNS3_PMU_HW_FILTER_FUNC_QUEUE: return GET_PCI_DEVFN(bdf); case HNS3_PMU_HW_FILTER_FUNC_INTR: return FILTER_CONDITION_FUNC_INTR(GET_PCI_DEVFN(bdf), intr_id); default: break; } return 0; } static void hns3_pmu_config_filter(struct perf_event *event) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); u8 event_type = hns3_pmu_get_event_type(event); u8 subevent_id = hns3_pmu_get_subevent(event); u16 queue_id = hns3_pmu_get_queue(event); struct hw_perf_event *hwc = &event->hw; u8 filter_mode = *(u8 *)hwc->addr_filters; u16 bdf = hns3_pmu_get_bdf(event); u32 idx = hwc->idx; u32 val; val = event_type; val |= subevent_id << HNS3_PMU_CTRL_SUBEVENT_S; val |= filter_mode << HNS3_PMU_CTRL_FILTER_MODE_S; val |= HNS3_PMU_EVENT_OVERFLOW_RESTART; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx, val); val = hns3_pmu_get_filter_condition(event); hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_HIGH, idx, val); if (filter_mode == HNS3_PMU_HW_FILTER_FUNC_QUEUE) hns3_pmu_set_qid_para(hns3_pmu, idx, bdf, queue_id); } static void hns3_pmu_enable_counter(struct hns3_pmu *hns3_pmu, struct hw_perf_event *hwc) { u32 idx = hwc->idx; u32 val; val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx); val |= HNS3_PMU_EVENT_EN; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx, val); } static void hns3_pmu_disable_counter(struct hns3_pmu *hns3_pmu, struct hw_perf_event *hwc) { u32 idx = hwc->idx; u32 val; val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx); val &= ~HNS3_PMU_EVENT_EN; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx, val); } static void hns3_pmu_enable_intr(struct hns3_pmu *hns3_pmu, struct hw_perf_event *hwc) { u32 idx = hwc->idx; u32 val; val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_INTR_MASK, idx); val &= ~HNS3_PMU_INTR_MASK_OVERFLOW; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_INTR_MASK, idx, val); } static void hns3_pmu_disable_intr(struct hns3_pmu *hns3_pmu, struct hw_perf_event *hwc) { u32 idx = hwc->idx; u32 val; val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_INTR_MASK, idx); val |= HNS3_PMU_INTR_MASK_OVERFLOW; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_INTR_MASK, idx, val); } static void hns3_pmu_clear_intr_status(struct hns3_pmu *hns3_pmu, u32 idx) { u32 val; val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx); val |= HNS3_PMU_EVENT_STATUS_RESET; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx, val); val = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx); val &= ~HNS3_PMU_EVENT_STATUS_RESET; hns3_pmu_writel(hns3_pmu, HNS3_PMU_REG_EVENT_CTRL_LOW, idx, val); } static u64 hns3_pmu_read_counter(struct perf_event *event) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); return hns3_pmu_readq(hns3_pmu, event->hw.event_base, event->hw.idx); } static void hns3_pmu_write_counter(struct perf_event *event, u64 value) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); u32 idx = event->hw.idx; hns3_pmu_writeq(hns3_pmu, HNS3_PMU_REG_EVENT_COUNTER, idx, value); hns3_pmu_writeq(hns3_pmu, HNS3_PMU_REG_EVENT_EXT_COUNTER, idx, value); } static void hns3_pmu_init_counter(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; local64_set(&hwc->prev_count, 0); hns3_pmu_write_counter(event, 0); } static int hns3_pmu_event_init(struct perf_event *event) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; int idx; int ret; if (event->attr.type != event->pmu->type) return -ENOENT; /* Sampling is not supported */ if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK) return -EOPNOTSUPP; event->cpu = hns3_pmu->on_cpu; idx = hns3_pmu_get_event_idx(hns3_pmu); if (idx < 0) { pci_err(hns3_pmu->pdev, "Up to %u events are supported!\n", HNS3_PMU_MAX_HW_EVENTS); return -EBUSY; } hwc->idx = idx; ret = hns3_pmu_select_filter_mode(event, hns3_pmu); if (ret) { pci_err(hns3_pmu->pdev, "Invalid filter, ret = %d.\n", ret); return ret; } if (!hns3_pmu_validate_event_group(event)) { pci_err(hns3_pmu->pdev, "Invalid event group.\n"); return -EINVAL; } if (hns3_pmu_get_ext_counter_used(event)) hwc->event_base = HNS3_PMU_REG_EVENT_EXT_COUNTER; else hwc->event_base = HNS3_PMU_REG_EVENT_COUNTER; return 0; } static void hns3_pmu_read(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; u64 new_cnt, prev_cnt, delta; do { prev_cnt = local64_read(&hwc->prev_count); new_cnt = hns3_pmu_read_counter(event); } while (local64_cmpxchg(&hwc->prev_count, prev_cnt, new_cnt) != prev_cnt); delta = new_cnt - prev_cnt; local64_add(delta, &event->count); } static void hns3_pmu_start(struct perf_event *event, int flags) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED))) return; WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE)); hwc->state = 0; hns3_pmu_config_filter(event); hns3_pmu_init_counter(event); hns3_pmu_enable_intr(hns3_pmu, hwc); hns3_pmu_enable_counter(hns3_pmu, hwc); perf_event_update_userpage(event); } static void hns3_pmu_stop(struct perf_event *event, int flags) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; hns3_pmu_disable_counter(hns3_pmu, hwc); hns3_pmu_disable_intr(hns3_pmu, hwc); WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED); hwc->state |= PERF_HES_STOPPED; if (hwc->state & PERF_HES_UPTODATE) return; /* Read hardware counter and update the perf counter statistics */ hns3_pmu_read(event); hwc->state |= PERF_HES_UPTODATE; } static int hns3_pmu_add(struct perf_event *event, int flags) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; int idx; hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE; /* Check all working events to find a related event. */ idx = hns3_pmu_find_related_event_idx(hns3_pmu, event); if (idx < 0 && idx != -ENOENT) return idx; /* Current event shares an enabled hardware event with related event */ if (idx >= 0 && idx < HNS3_PMU_MAX_HW_EVENTS) { hwc->idx = idx; goto start_count; } idx = hns3_pmu_get_event_idx(hns3_pmu); if (idx < 0) return idx; hwc->idx = idx; hns3_pmu->hw_events[idx] = event; start_count: if (flags & PERF_EF_START) hns3_pmu_start(event, PERF_EF_RELOAD); return 0; } static void hns3_pmu_del(struct perf_event *event, int flags) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; hns3_pmu_stop(event, PERF_EF_UPDATE); hns3_pmu->hw_events[hwc->idx] = NULL; perf_event_update_userpage(event); } static void hns3_pmu_enable(struct pmu *pmu) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(pmu); u32 val; val = readl(hns3_pmu->base + HNS3_PMU_REG_GLOBAL_CTRL); val |= HNS3_PMU_GLOBAL_START; writel(val, hns3_pmu->base + HNS3_PMU_REG_GLOBAL_CTRL); } static void hns3_pmu_disable(struct pmu *pmu) { struct hns3_pmu *hns3_pmu = to_hns3_pmu(pmu); u32 val; val = readl(hns3_pmu->base + HNS3_PMU_REG_GLOBAL_CTRL); val &= ~HNS3_PMU_GLOBAL_START; writel(val, hns3_pmu->base + HNS3_PMU_REG_GLOBAL_CTRL); } static int hns3_pmu_alloc_pmu(struct pci_dev *pdev, struct hns3_pmu *hns3_pmu) { u16 device_id; char *name; u32 val; hns3_pmu->base = pcim_iomap_table(pdev)[BAR_2]; if (!hns3_pmu->base) { pci_err(pdev, "ioremap failed\n"); return -ENOMEM; } hns3_pmu->hw_clk_freq = readl(hns3_pmu->base + HNS3_PMU_REG_CLOCK_FREQ); val = readl(hns3_pmu->base + HNS3_PMU_REG_BDF); hns3_pmu->bdf_min = val & 0xffff; hns3_pmu->bdf_max = val >> 16; val = readl(hns3_pmu->base + HNS3_PMU_REG_DEVICE_ID); device_id = val & 0xffff; name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hns3_pmu_sicl_%u", device_id); if (!name) return -ENOMEM; hns3_pmu->pdev = pdev; hns3_pmu->on_cpu = -1; hns3_pmu->identifier = readl(hns3_pmu->base + HNS3_PMU_REG_VERSION); hns3_pmu->pmu = (struct pmu) { .name = name, .module = THIS_MODULE, .event_init = hns3_pmu_event_init, .pmu_enable = hns3_pmu_enable, .pmu_disable = hns3_pmu_disable, .add = hns3_pmu_add, .del = hns3_pmu_del, .start = hns3_pmu_start, .stop = hns3_pmu_stop, .read = hns3_pmu_read, .task_ctx_nr = perf_invalid_context, .attr_groups = hns3_pmu_attr_groups, .capabilities = PERF_PMU_CAP_NO_EXCLUDE, }; return 0; } static irqreturn_t hns3_pmu_irq(int irq, void *data) { struct hns3_pmu *hns3_pmu = data; u32 intr_status, idx; for (idx = 0; idx < HNS3_PMU_MAX_HW_EVENTS; idx++) { intr_status = hns3_pmu_readl(hns3_pmu, HNS3_PMU_REG_EVENT_INTR_STATUS, idx); /* * As each counter will restart from 0 when it is overflowed, * extra processing is no need, just clear interrupt status. */ if (intr_status) hns3_pmu_clear_intr_status(hns3_pmu, idx); } return IRQ_HANDLED; } static int hns3_pmu_online_cpu(unsigned int cpu, struct hlist_node *node) { struct hns3_pmu *hns3_pmu; hns3_pmu = hlist_entry_safe(node, struct hns3_pmu, node); if (!hns3_pmu) return -ENODEV; if (hns3_pmu->on_cpu == -1) { hns3_pmu->on_cpu = cpu; irq_set_affinity(hns3_pmu->irq, cpumask_of(cpu)); } return 0; } static int hns3_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) { struct hns3_pmu *hns3_pmu; unsigned int target; hns3_pmu = hlist_entry_safe(node, struct hns3_pmu, node); if (!hns3_pmu) return -ENODEV; /* Nothing to do if this CPU doesn't own the PMU */ if (hns3_pmu->on_cpu != cpu) return 0; /* Choose a new CPU from all online cpus */ target = cpumask_any_but(cpu_online_mask, cpu); if (target >= nr_cpu_ids) return 0; perf_pmu_migrate_context(&hns3_pmu->pmu, cpu, target); hns3_pmu->on_cpu = target; irq_set_affinity(hns3_pmu->irq, cpumask_of(target)); return 0; } static void hns3_pmu_free_irq(void *data) { struct pci_dev *pdev = data; pci_free_irq_vectors(pdev); } static int hns3_pmu_irq_register(struct pci_dev *pdev, struct hns3_pmu *hns3_pmu) { int irq, ret; ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); if (ret < 0) { pci_err(pdev, "failed to enable MSI vectors, ret = %d.\n", ret); return ret; } ret = devm_add_action(&pdev->dev, hns3_pmu_free_irq, pdev); if (ret) { pci_err(pdev, "failed to add free irq action, ret = %d.\n", ret); return ret; } irq = pci_irq_vector(pdev, 0); ret = devm_request_irq(&pdev->dev, irq, hns3_pmu_irq, 0, hns3_pmu->pmu.name, hns3_pmu); if (ret) { pci_err(pdev, "failed to register irq, ret = %d.\n", ret); return ret; } hns3_pmu->irq = irq; return 0; } static int hns3_pmu_init_pmu(struct pci_dev *pdev, struct hns3_pmu *hns3_pmu) { int ret; ret = hns3_pmu_alloc_pmu(pdev, hns3_pmu); if (ret) return ret; ret = hns3_pmu_irq_register(pdev, hns3_pmu); if (ret) return ret; ret = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE, &hns3_pmu->node); if (ret) { pci_err(pdev, "failed to register hotplug, ret = %d.\n", ret); return ret; } ret = perf_pmu_register(&hns3_pmu->pmu, hns3_pmu->pmu.name, -1); if (ret) { pci_err(pdev, "failed to register perf PMU, ret = %d.\n", ret); cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE, &hns3_pmu->node); } return ret; } static void hns3_pmu_uninit_pmu(struct pci_dev *pdev) { struct hns3_pmu *hns3_pmu = pci_get_drvdata(pdev); perf_pmu_unregister(&hns3_pmu->pmu); cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE, &hns3_pmu->node); } static int hns3_pmu_init_dev(struct pci_dev *pdev) { int ret; ret = pcim_enable_device(pdev); if (ret) { pci_err(pdev, "failed to enable pci device, ret = %d.\n", ret); return ret; } ret = pcim_iomap_regions(pdev, BIT(BAR_2), "hns3_pmu"); if (ret < 0) { pci_err(pdev, "failed to request pci region, ret = %d.\n", ret); return ret; } pci_set_master(pdev); return 0; } static int hns3_pmu_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct hns3_pmu *hns3_pmu; int ret; hns3_pmu = devm_kzalloc(&pdev->dev, sizeof(*hns3_pmu), GFP_KERNEL); if (!hns3_pmu) return -ENOMEM; ret = hns3_pmu_init_dev(pdev); if (ret) return ret; ret = hns3_pmu_init_pmu(pdev, hns3_pmu); if (ret) { pci_clear_master(pdev); return ret; } pci_set_drvdata(pdev, hns3_pmu); return ret; } static void hns3_pmu_remove(struct pci_dev *pdev) { hns3_pmu_uninit_pmu(pdev); pci_clear_master(pdev); pci_set_drvdata(pdev, NULL); } static const struct pci_device_id hns3_pmu_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, 0xa22b) }, { 0, } }; MODULE_DEVICE_TABLE(pci, hns3_pmu_ids); static struct pci_driver hns3_pmu_driver = { .name = "hns3_pmu", .id_table = hns3_pmu_ids, .probe = hns3_pmu_probe, .remove = hns3_pmu_remove, }; static int __init hns3_pmu_module_init(void) { int ret; ret = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE, "AP_PERF_ARM_HNS3_PMU_ONLINE", hns3_pmu_online_cpu, hns3_pmu_offline_cpu); if (ret) { pr_err("failed to setup HNS3 PMU hotplug, ret = %d.\n", ret); return ret; } ret = pci_register_driver(&hns3_pmu_driver); if (ret) { pr_err("failed to register pci driver, ret = %d.\n", ret); cpuhp_remove_multi_state(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE); } return ret; } module_init(hns3_pmu_module_init); static void __exit hns3_pmu_module_exit(void) { pci_unregister_driver(&hns3_pmu_driver); cpuhp_remove_multi_state(CPUHP_AP_PERF_ARM_HNS3_PMU_ONLINE); } module_exit(hns3_pmu_module_exit); MODULE_DESCRIPTION("HNS3 PMU driver"); MODULE_LICENSE("GPL v2");
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