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724142f8c4
This patch adds support for performance reporting private feature for FPGA Management Engine (FME). Now it supports several different performance counters, including 'basic', 'cache', 'fabric', 'vtd' and 'vtd_sip'. It allows user to use standard linux tools to access these performance counters. e.g. List all events by "perf list" perf list | grep fme dfl_fme0/cache_read_hit/ [Kernel PMU event] dfl_fme0/cache_read_miss/ [Kernel PMU event] ... dfl_fme0/fab_mmio_read/ [Kernel PMU event] dfl_fme0/fab_mmio_write/ [Kernel PMU event] ... dfl_fme0/fab_port_mmio_read,portid=?/ [Kernel PMU event] dfl_fme0/fab_port_mmio_write,portid=?/ [Kernel PMU event] ... dfl_fme0/vtd_port_devtlb_1g_fill,portid=?/ [Kernel PMU event] dfl_fme0/vtd_port_devtlb_2m_fill,portid=?/ [Kernel PMU event] ... dfl_fme0/vtd_sip_iotlb_1g_hit/ [Kernel PMU event] dfl_fme0/vtd_sip_iotlb_1g_miss/ [Kernel PMU event] ... dfl_fme0/clock [Kernel PMU event] ... e.g. check increased counter value after run one application using "perf stat" command. perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_mmio_write/ ./test Performance counter stats for './test': 1 dfl_fme0/fab_mmio_read/ 2 dfl_fme0/fab_mmio_write/ 1.009496520 seconds time elapsed Please note that fabric counters support both fab_* and fab_port_*, but actually they are sharing one set of performance counters in hardware. If user wants to monitor overall data events on fab_* then fab_port_* can't be supported at the same time, see example below: perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_port_mmio_write,portid=0/ Performance counter stats for 'system wide': 0 dfl_fme0/fab_mmio_read/ <not supported> dfl_fme0/fab_port_mmio_write,portid=0/ 2.141064085 seconds time elapsed Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Link: https://lore.kernel.org/r/1587949583-12058-3-git-send-email-hao.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1021 lines
30 KiB
C
1021 lines
30 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Driver for FPGA Management Engine (FME) Global Performance Reporting
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*
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* Copyright 2019 Intel Corporation, Inc.
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*
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* Authors:
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* Kang Luwei <luwei.kang@intel.com>
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* Xiao Guangrong <guangrong.xiao@linux.intel.com>
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* Wu Hao <hao.wu@intel.com>
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* Xu Yilun <yilun.xu@intel.com>
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* Joseph Grecco <joe.grecco@intel.com>
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* Enno Luebbers <enno.luebbers@intel.com>
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* Tim Whisonant <tim.whisonant@intel.com>
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* Ananda Ravuri <ananda.ravuri@intel.com>
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* Mitchel, Henry <henry.mitchel@intel.com>
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*/
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#include <linux/perf_event.h>
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#include "dfl.h"
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#include "dfl-fme.h"
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/*
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* Performance Counter Registers for Cache.
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*
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* Cache Events are listed below as CACHE_EVNT_*.
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*/
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#define CACHE_CTRL 0x8
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#define CACHE_RESET_CNTR BIT_ULL(0)
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#define CACHE_FREEZE_CNTR BIT_ULL(8)
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#define CACHE_CTRL_EVNT GENMASK_ULL(19, 16)
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#define CACHE_EVNT_RD_HIT 0x0
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#define CACHE_EVNT_WR_HIT 0x1
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#define CACHE_EVNT_RD_MISS 0x2
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#define CACHE_EVNT_WR_MISS 0x3
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#define CACHE_EVNT_RSVD 0x4
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#define CACHE_EVNT_HOLD_REQ 0x5
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#define CACHE_EVNT_DATA_WR_PORT_CONTEN 0x6
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#define CACHE_EVNT_TAG_WR_PORT_CONTEN 0x7
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#define CACHE_EVNT_TX_REQ_STALL 0x8
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#define CACHE_EVNT_RX_REQ_STALL 0x9
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#define CACHE_EVNT_EVICTIONS 0xa
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#define CACHE_EVNT_MAX CACHE_EVNT_EVICTIONS
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#define CACHE_CHANNEL_SEL BIT_ULL(20)
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#define CACHE_CHANNEL_RD 0
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#define CACHE_CHANNEL_WR 1
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#define CACHE_CNTR0 0x10
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#define CACHE_CNTR1 0x18
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#define CACHE_CNTR_EVNT_CNTR GENMASK_ULL(47, 0)
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#define CACHE_CNTR_EVNT GENMASK_ULL(63, 60)
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/*
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* Performance Counter Registers for Fabric.
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*
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* Fabric Events are listed below as FAB_EVNT_*
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*/
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#define FAB_CTRL 0x20
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#define FAB_RESET_CNTR BIT_ULL(0)
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#define FAB_FREEZE_CNTR BIT_ULL(8)
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#define FAB_CTRL_EVNT GENMASK_ULL(19, 16)
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#define FAB_EVNT_PCIE0_RD 0x0
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#define FAB_EVNT_PCIE0_WR 0x1
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#define FAB_EVNT_PCIE1_RD 0x2
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#define FAB_EVNT_PCIE1_WR 0x3
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#define FAB_EVNT_UPI_RD 0x4
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#define FAB_EVNT_UPI_WR 0x5
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#define FAB_EVNT_MMIO_RD 0x6
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#define FAB_EVNT_MMIO_WR 0x7
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#define FAB_EVNT_MAX FAB_EVNT_MMIO_WR
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#define FAB_PORT_ID GENMASK_ULL(21, 20)
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#define FAB_PORT_FILTER BIT_ULL(23)
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#define FAB_PORT_FILTER_DISABLE 0
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#define FAB_PORT_FILTER_ENABLE 1
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#define FAB_CNTR 0x28
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#define FAB_CNTR_EVNT_CNTR GENMASK_ULL(59, 0)
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#define FAB_CNTR_EVNT GENMASK_ULL(63, 60)
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/*
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* Performance Counter Registers for Clock.
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*
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* Clock Counter can't be reset or frozen by SW.
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*/
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#define CLK_CNTR 0x30
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#define BASIC_EVNT_CLK 0x0
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#define BASIC_EVNT_MAX BASIC_EVNT_CLK
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/*
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* Performance Counter Registers for IOMMU / VT-D.
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*
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* VT-D Events are listed below as VTD_EVNT_* and VTD_SIP_EVNT_*
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*/
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#define VTD_CTRL 0x38
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#define VTD_RESET_CNTR BIT_ULL(0)
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#define VTD_FREEZE_CNTR BIT_ULL(8)
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#define VTD_CTRL_EVNT GENMASK_ULL(19, 16)
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#define VTD_EVNT_AFU_MEM_RD_TRANS 0x0
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#define VTD_EVNT_AFU_MEM_WR_TRANS 0x1
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#define VTD_EVNT_AFU_DEVTLB_RD_HIT 0x2
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#define VTD_EVNT_AFU_DEVTLB_WR_HIT 0x3
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#define VTD_EVNT_DEVTLB_4K_FILL 0x4
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#define VTD_EVNT_DEVTLB_2M_FILL 0x5
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#define VTD_EVNT_DEVTLB_1G_FILL 0x6
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#define VTD_EVNT_MAX VTD_EVNT_DEVTLB_1G_FILL
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#define VTD_CNTR 0x40
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#define VTD_CNTR_EVNT_CNTR GENMASK_ULL(47, 0)
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#define VTD_CNTR_EVNT GENMASK_ULL(63, 60)
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#define VTD_SIP_CTRL 0x48
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#define VTD_SIP_RESET_CNTR BIT_ULL(0)
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#define VTD_SIP_FREEZE_CNTR BIT_ULL(8)
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#define VTD_SIP_CTRL_EVNT GENMASK_ULL(19, 16)
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#define VTD_SIP_EVNT_IOTLB_4K_HIT 0x0
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#define VTD_SIP_EVNT_IOTLB_2M_HIT 0x1
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#define VTD_SIP_EVNT_IOTLB_1G_HIT 0x2
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#define VTD_SIP_EVNT_SLPWC_L3_HIT 0x3
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#define VTD_SIP_EVNT_SLPWC_L4_HIT 0x4
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#define VTD_SIP_EVNT_RCC_HIT 0x5
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#define VTD_SIP_EVNT_IOTLB_4K_MISS 0x6
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#define VTD_SIP_EVNT_IOTLB_2M_MISS 0x7
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#define VTD_SIP_EVNT_IOTLB_1G_MISS 0x8
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#define VTD_SIP_EVNT_SLPWC_L3_MISS 0x9
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#define VTD_SIP_EVNT_SLPWC_L4_MISS 0xa
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#define VTD_SIP_EVNT_RCC_MISS 0xb
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#define VTD_SIP_EVNT_MAX VTD_SIP_EVNT_SLPWC_L4_MISS
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#define VTD_SIP_CNTR 0X50
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#define VTD_SIP_CNTR_EVNT_CNTR GENMASK_ULL(47, 0)
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#define VTD_SIP_CNTR_EVNT GENMASK_ULL(63, 60)
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#define PERF_TIMEOUT 30
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#define PERF_MAX_PORT_NUM 1U
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/**
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* struct fme_perf_priv - priv data structure for fme perf driver
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*
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* @dev: parent device.
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* @ioaddr: mapped base address of mmio region.
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* @pmu: pmu data structure for fme perf counters.
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* @id: id of this fme performance report private feature.
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* @fab_users: current user number on fabric counters.
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* @fab_port_id: used to indicate current working mode of fabric counters.
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* @fab_lock: lock to protect fabric counters working mode.
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* @cpu: active CPU to which the PMU is bound for accesses.
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* @cpuhp_node: node for CPU hotplug notifier link.
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* @cpuhp_state: state for CPU hotplug notification;
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*/
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struct fme_perf_priv {
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struct device *dev;
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void __iomem *ioaddr;
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struct pmu pmu;
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u64 id;
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u32 fab_users;
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u32 fab_port_id;
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spinlock_t fab_lock;
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unsigned int cpu;
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struct hlist_node node;
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enum cpuhp_state cpuhp_state;
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};
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/**
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* struct fme_perf_event_ops - callbacks for fme perf events
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*
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* @event_init: callback invoked during event init.
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* @event_destroy: callback invoked during event destroy.
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* @read_counter: callback to read hardware counters.
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*/
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struct fme_perf_event_ops {
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int (*event_init)(struct fme_perf_priv *priv, u32 event, u32 portid);
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void (*event_destroy)(struct fme_perf_priv *priv, u32 event,
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u32 portid);
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u64 (*read_counter)(struct fme_perf_priv *priv, u32 event, u32 portid);
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};
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#define to_fme_perf_priv(_pmu) container_of(_pmu, struct fme_perf_priv, pmu)
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static ssize_t cpumask_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct pmu *pmu = dev_get_drvdata(dev);
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struct fme_perf_priv *priv;
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priv = to_fme_perf_priv(pmu);
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return cpumap_print_to_pagebuf(true, buf, cpumask_of(priv->cpu));
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}
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static DEVICE_ATTR_RO(cpumask);
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static struct attribute *fme_perf_cpumask_attrs[] = {
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&dev_attr_cpumask.attr,
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NULL,
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};
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static struct attribute_group fme_perf_cpumask_group = {
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.attrs = fme_perf_cpumask_attrs,
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};
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#define FME_EVENT_MASK GENMASK_ULL(11, 0)
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#define FME_EVENT_SHIFT 0
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#define FME_EVTYPE_MASK GENMASK_ULL(15, 12)
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#define FME_EVTYPE_SHIFT 12
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#define FME_EVTYPE_BASIC 0
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#define FME_EVTYPE_CACHE 1
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#define FME_EVTYPE_FABRIC 2
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#define FME_EVTYPE_VTD 3
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#define FME_EVTYPE_VTD_SIP 4
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#define FME_EVTYPE_MAX FME_EVTYPE_VTD_SIP
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#define FME_PORTID_MASK GENMASK_ULL(23, 16)
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#define FME_PORTID_SHIFT 16
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#define FME_PORTID_ROOT (0xffU)
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#define get_event(_config) FIELD_GET(FME_EVENT_MASK, _config)
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#define get_evtype(_config) FIELD_GET(FME_EVTYPE_MASK, _config)
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#define get_portid(_config) FIELD_GET(FME_PORTID_MASK, _config)
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PMU_FORMAT_ATTR(event, "config:0-11");
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PMU_FORMAT_ATTR(evtype, "config:12-15");
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PMU_FORMAT_ATTR(portid, "config:16-23");
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static struct attribute *fme_perf_format_attrs[] = {
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&format_attr_event.attr,
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&format_attr_evtype.attr,
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&format_attr_portid.attr,
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NULL,
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};
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static struct attribute_group fme_perf_format_group = {
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.name = "format",
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.attrs = fme_perf_format_attrs,
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};
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/*
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* There are no default events, but we need to create
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* "events" group (with empty attrs) before updating
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* it with detected events (using pmu->attr_update).
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*/
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static struct attribute *fme_perf_events_attrs_empty[] = {
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NULL,
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};
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static struct attribute_group fme_perf_events_group = {
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.name = "events",
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.attrs = fme_perf_events_attrs_empty,
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};
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static const struct attribute_group *fme_perf_groups[] = {
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&fme_perf_format_group,
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&fme_perf_cpumask_group,
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&fme_perf_events_group,
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NULL,
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};
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static bool is_portid_root(u32 portid)
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{
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return portid == FME_PORTID_ROOT;
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}
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static bool is_portid_port(u32 portid)
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{
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return portid < PERF_MAX_PORT_NUM;
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}
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static bool is_portid_root_or_port(u32 portid)
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{
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return is_portid_root(portid) || is_portid_port(portid);
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}
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static u64 fme_read_perf_cntr_reg(void __iomem *addr)
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{
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u32 low;
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u64 v;
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/*
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* For 64bit counter registers, the counter may increases and carries
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* out of bit [31] between 2 32bit reads. So add extra reads to help
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* to prevent this issue. This only happens in platforms which don't
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* support 64bit read - readq is split into 2 readl.
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*/
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do {
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v = readq(addr);
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low = readl(addr);
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} while (((u32)v) > low);
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return v;
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}
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static int basic_event_init(struct fme_perf_priv *priv, u32 event, u32 portid)
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{
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if (event <= BASIC_EVNT_MAX && is_portid_root(portid))
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return 0;
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return -EINVAL;
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}
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static u64 basic_read_event_counter(struct fme_perf_priv *priv,
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u32 event, u32 portid)
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{
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void __iomem *base = priv->ioaddr;
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return fme_read_perf_cntr_reg(base + CLK_CNTR);
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}
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static int cache_event_init(struct fme_perf_priv *priv, u32 event, u32 portid)
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{
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if (priv->id == FME_FEATURE_ID_GLOBAL_IPERF &&
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event <= CACHE_EVNT_MAX && is_portid_root(portid))
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return 0;
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return -EINVAL;
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}
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static u64 cache_read_event_counter(struct fme_perf_priv *priv,
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u32 event, u32 portid)
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{
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void __iomem *base = priv->ioaddr;
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u64 v, count;
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u8 channel;
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if (event == CACHE_EVNT_WR_HIT || event == CACHE_EVNT_WR_MISS ||
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event == CACHE_EVNT_DATA_WR_PORT_CONTEN ||
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event == CACHE_EVNT_TAG_WR_PORT_CONTEN)
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channel = CACHE_CHANNEL_WR;
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else
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channel = CACHE_CHANNEL_RD;
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/* set channel access type and cache event code. */
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v = readq(base + CACHE_CTRL);
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v &= ~(CACHE_CHANNEL_SEL | CACHE_CTRL_EVNT);
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v |= FIELD_PREP(CACHE_CHANNEL_SEL, channel);
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v |= FIELD_PREP(CACHE_CTRL_EVNT, event);
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writeq(v, base + CACHE_CTRL);
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if (readq_poll_timeout_atomic(base + CACHE_CNTR0, v,
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FIELD_GET(CACHE_CNTR_EVNT, v) == event,
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1, PERF_TIMEOUT)) {
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dev_err(priv->dev, "timeout, unmatched cache event code in counter register.\n");
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return 0;
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}
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v = fme_read_perf_cntr_reg(base + CACHE_CNTR0);
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count = FIELD_GET(CACHE_CNTR_EVNT_CNTR, v);
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v = fme_read_perf_cntr_reg(base + CACHE_CNTR1);
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count += FIELD_GET(CACHE_CNTR_EVNT_CNTR, v);
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return count;
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}
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static bool is_fabric_event_supported(struct fme_perf_priv *priv, u32 event,
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u32 portid)
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{
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if (event > FAB_EVNT_MAX || !is_portid_root_or_port(portid))
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return false;
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if (priv->id == FME_FEATURE_ID_GLOBAL_DPERF &&
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(event == FAB_EVNT_PCIE1_RD || event == FAB_EVNT_UPI_RD ||
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event == FAB_EVNT_PCIE1_WR || event == FAB_EVNT_UPI_WR))
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return false;
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return true;
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}
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static int fabric_event_init(struct fme_perf_priv *priv, u32 event, u32 portid)
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{
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void __iomem *base = priv->ioaddr;
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int ret = 0;
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u64 v;
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if (!is_fabric_event_supported(priv, event, portid))
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return -EINVAL;
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/*
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* as fabric counter set only can be in either overall or port mode.
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* In overall mode, it counts overall data for FPGA, and in port mode,
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* it is configured to monitor on one individual port.
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*
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* so every time, a new event is initialized, driver checks
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* current working mode and if someone is using this counter set.
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*/
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spin_lock(&priv->fab_lock);
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if (priv->fab_users && priv->fab_port_id != portid) {
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dev_dbg(priv->dev, "conflict fabric event monitoring mode.\n");
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ret = -EOPNOTSUPP;
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goto exit;
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}
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priv->fab_users++;
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/*
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* skip if current working mode matches, otherwise change the working
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* mode per input port_id, to monitor overall data or another port.
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*/
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if (priv->fab_port_id == portid)
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goto exit;
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priv->fab_port_id = portid;
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v = readq(base + FAB_CTRL);
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v &= ~(FAB_PORT_FILTER | FAB_PORT_ID);
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if (is_portid_root(portid)) {
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v |= FIELD_PREP(FAB_PORT_FILTER, FAB_PORT_FILTER_DISABLE);
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} else {
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v |= FIELD_PREP(FAB_PORT_FILTER, FAB_PORT_FILTER_ENABLE);
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v |= FIELD_PREP(FAB_PORT_ID, portid);
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}
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writeq(v, base + FAB_CTRL);
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exit:
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spin_unlock(&priv->fab_lock);
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return ret;
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}
|
|
|
|
static void fabric_event_destroy(struct fme_perf_priv *priv, u32 event,
|
|
u32 portid)
|
|
{
|
|
spin_lock(&priv->fab_lock);
|
|
priv->fab_users--;
|
|
spin_unlock(&priv->fab_lock);
|
|
}
|
|
|
|
static u64 fabric_read_event_counter(struct fme_perf_priv *priv, u32 event,
|
|
u32 portid)
|
|
{
|
|
void __iomem *base = priv->ioaddr;
|
|
u64 v;
|
|
|
|
v = readq(base + FAB_CTRL);
|
|
v &= ~FAB_CTRL_EVNT;
|
|
v |= FIELD_PREP(FAB_CTRL_EVNT, event);
|
|
writeq(v, base + FAB_CTRL);
|
|
|
|
if (readq_poll_timeout_atomic(base + FAB_CNTR, v,
|
|
FIELD_GET(FAB_CNTR_EVNT, v) == event,
|
|
1, PERF_TIMEOUT)) {
|
|
dev_err(priv->dev, "timeout, unmatched fab event code in counter register.\n");
|
|
return 0;
|
|
}
|
|
|
|
v = fme_read_perf_cntr_reg(base + FAB_CNTR);
|
|
return FIELD_GET(FAB_CNTR_EVNT_CNTR, v);
|
|
}
|
|
|
|
static int vtd_event_init(struct fme_perf_priv *priv, u32 event, u32 portid)
|
|
{
|
|
if (priv->id == FME_FEATURE_ID_GLOBAL_IPERF &&
|
|
event <= VTD_EVNT_MAX && is_portid_port(portid))
|
|
return 0;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static u64 vtd_read_event_counter(struct fme_perf_priv *priv, u32 event,
|
|
u32 portid)
|
|
{
|
|
void __iomem *base = priv->ioaddr;
|
|
u64 v;
|
|
|
|
event += (portid * (VTD_EVNT_MAX + 1));
|
|
|
|
v = readq(base + VTD_CTRL);
|
|
v &= ~VTD_CTRL_EVNT;
|
|
v |= FIELD_PREP(VTD_CTRL_EVNT, event);
|
|
writeq(v, base + VTD_CTRL);
|
|
|
|
if (readq_poll_timeout_atomic(base + VTD_CNTR, v,
|
|
FIELD_GET(VTD_CNTR_EVNT, v) == event,
|
|
1, PERF_TIMEOUT)) {
|
|
dev_err(priv->dev, "timeout, unmatched vtd event code in counter register.\n");
|
|
return 0;
|
|
}
|
|
|
|
v = fme_read_perf_cntr_reg(base + VTD_CNTR);
|
|
return FIELD_GET(VTD_CNTR_EVNT_CNTR, v);
|
|
}
|
|
|
|
static int vtd_sip_event_init(struct fme_perf_priv *priv, u32 event, u32 portid)
|
|
{
|
|
if (priv->id == FME_FEATURE_ID_GLOBAL_IPERF &&
|
|
event <= VTD_SIP_EVNT_MAX && is_portid_root(portid))
|
|
return 0;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static u64 vtd_sip_read_event_counter(struct fme_perf_priv *priv, u32 event,
|
|
u32 portid)
|
|
{
|
|
void __iomem *base = priv->ioaddr;
|
|
u64 v;
|
|
|
|
v = readq(base + VTD_SIP_CTRL);
|
|
v &= ~VTD_SIP_CTRL_EVNT;
|
|
v |= FIELD_PREP(VTD_SIP_CTRL_EVNT, event);
|
|
writeq(v, base + VTD_SIP_CTRL);
|
|
|
|
if (readq_poll_timeout_atomic(base + VTD_SIP_CNTR, v,
|
|
FIELD_GET(VTD_SIP_CNTR_EVNT, v) == event,
|
|
1, PERF_TIMEOUT)) {
|
|
dev_err(priv->dev, "timeout, unmatched vtd sip event code in counter register\n");
|
|
return 0;
|
|
}
|
|
|
|
v = fme_read_perf_cntr_reg(base + VTD_SIP_CNTR);
|
|
return FIELD_GET(VTD_SIP_CNTR_EVNT_CNTR, v);
|
|
}
|
|
|
|
static struct fme_perf_event_ops fme_perf_event_ops[] = {
|
|
[FME_EVTYPE_BASIC] = {.event_init = basic_event_init,
|
|
.read_counter = basic_read_event_counter,},
|
|
[FME_EVTYPE_CACHE] = {.event_init = cache_event_init,
|
|
.read_counter = cache_read_event_counter,},
|
|
[FME_EVTYPE_FABRIC] = {.event_init = fabric_event_init,
|
|
.event_destroy = fabric_event_destroy,
|
|
.read_counter = fabric_read_event_counter,},
|
|
[FME_EVTYPE_VTD] = {.event_init = vtd_event_init,
|
|
.read_counter = vtd_read_event_counter,},
|
|
[FME_EVTYPE_VTD_SIP] = {.event_init = vtd_sip_event_init,
|
|
.read_counter = vtd_sip_read_event_counter,},
|
|
};
|
|
|
|
static ssize_t fme_perf_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dev_ext_attribute *eattr;
|
|
unsigned long config;
|
|
char *ptr = buf;
|
|
|
|
eattr = container_of(attr, struct dev_ext_attribute, attr);
|
|
config = (unsigned long)eattr->var;
|
|
|
|
ptr += sprintf(ptr, "event=0x%02x", (unsigned int)get_event(config));
|
|
ptr += sprintf(ptr, ",evtype=0x%02x", (unsigned int)get_evtype(config));
|
|
|
|
if (is_portid_root(get_portid(config)))
|
|
ptr += sprintf(ptr, ",portid=0x%02x\n", FME_PORTID_ROOT);
|
|
else
|
|
ptr += sprintf(ptr, ",portid=?\n");
|
|
|
|
return (ssize_t)(ptr - buf);
|
|
}
|
|
|
|
#define FME_EVENT_ATTR(_name) \
|
|
__ATTR(_name, 0444, fme_perf_event_show, NULL)
|
|
|
|
#define FME_PORT_EVENT_CONFIG(_event, _type) \
|
|
(void *)((((_event) << FME_EVENT_SHIFT) & FME_EVENT_MASK) | \
|
|
(((_type) << FME_EVTYPE_SHIFT) & FME_EVTYPE_MASK))
|
|
|
|
#define FME_EVENT_CONFIG(_event, _type) \
|
|
(void *)((((_event) << FME_EVENT_SHIFT) & FME_EVENT_MASK) | \
|
|
(((_type) << FME_EVTYPE_SHIFT) & FME_EVTYPE_MASK) | \
|
|
(FME_PORTID_ROOT << FME_PORTID_SHIFT))
|
|
|
|
/* FME Perf Basic Events */
|
|
#define FME_EVENT_BASIC(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_##_name = { \
|
|
.attr = FME_EVENT_ATTR(_name), \
|
|
.var = FME_EVENT_CONFIG(_event, FME_EVTYPE_BASIC), \
|
|
}
|
|
|
|
FME_EVENT_BASIC(clock, BASIC_EVNT_CLK);
|
|
|
|
static struct attribute *fme_perf_basic_events_attrs[] = {
|
|
&fme_perf_event_clock.attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group fme_perf_basic_events_group = {
|
|
.name = "events",
|
|
.attrs = fme_perf_basic_events_attrs,
|
|
};
|
|
|
|
/* FME Perf Cache Events */
|
|
#define FME_EVENT_CACHE(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_cache_##_name = { \
|
|
.attr = FME_EVENT_ATTR(cache_##_name), \
|
|
.var = FME_EVENT_CONFIG(_event, FME_EVTYPE_CACHE), \
|
|
}
|
|
|
|
FME_EVENT_CACHE(read_hit, CACHE_EVNT_RD_HIT);
|
|
FME_EVENT_CACHE(read_miss, CACHE_EVNT_RD_MISS);
|
|
FME_EVENT_CACHE(write_hit, CACHE_EVNT_WR_HIT);
|
|
FME_EVENT_CACHE(write_miss, CACHE_EVNT_WR_MISS);
|
|
FME_EVENT_CACHE(hold_request, CACHE_EVNT_HOLD_REQ);
|
|
FME_EVENT_CACHE(tx_req_stall, CACHE_EVNT_TX_REQ_STALL);
|
|
FME_EVENT_CACHE(rx_req_stall, CACHE_EVNT_RX_REQ_STALL);
|
|
FME_EVENT_CACHE(eviction, CACHE_EVNT_EVICTIONS);
|
|
FME_EVENT_CACHE(data_write_port_contention, CACHE_EVNT_DATA_WR_PORT_CONTEN);
|
|
FME_EVENT_CACHE(tag_write_port_contention, CACHE_EVNT_TAG_WR_PORT_CONTEN);
|
|
|
|
static struct attribute *fme_perf_cache_events_attrs[] = {
|
|
&fme_perf_event_cache_read_hit.attr.attr,
|
|
&fme_perf_event_cache_read_miss.attr.attr,
|
|
&fme_perf_event_cache_write_hit.attr.attr,
|
|
&fme_perf_event_cache_write_miss.attr.attr,
|
|
&fme_perf_event_cache_hold_request.attr.attr,
|
|
&fme_perf_event_cache_tx_req_stall.attr.attr,
|
|
&fme_perf_event_cache_rx_req_stall.attr.attr,
|
|
&fme_perf_event_cache_eviction.attr.attr,
|
|
&fme_perf_event_cache_data_write_port_contention.attr.attr,
|
|
&fme_perf_event_cache_tag_write_port_contention.attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static umode_t fme_perf_events_visible(struct kobject *kobj,
|
|
struct attribute *attr, int n)
|
|
{
|
|
struct pmu *pmu = dev_get_drvdata(kobj_to_dev(kobj));
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(pmu);
|
|
|
|
return (priv->id == FME_FEATURE_ID_GLOBAL_IPERF) ? attr->mode : 0;
|
|
}
|
|
|
|
static const struct attribute_group fme_perf_cache_events_group = {
|
|
.name = "events",
|
|
.attrs = fme_perf_cache_events_attrs,
|
|
.is_visible = fme_perf_events_visible,
|
|
};
|
|
|
|
/* FME Perf Fabric Events */
|
|
#define FME_EVENT_FABRIC(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_fab_##_name = { \
|
|
.attr = FME_EVENT_ATTR(fab_##_name), \
|
|
.var = FME_EVENT_CONFIG(_event, FME_EVTYPE_FABRIC), \
|
|
}
|
|
|
|
#define FME_EVENT_FABRIC_PORT(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_fab_port_##_name = { \
|
|
.attr = FME_EVENT_ATTR(fab_port_##_name), \
|
|
.var = FME_PORT_EVENT_CONFIG(_event, FME_EVTYPE_FABRIC), \
|
|
}
|
|
|
|
FME_EVENT_FABRIC(pcie0_read, FAB_EVNT_PCIE0_RD);
|
|
FME_EVENT_FABRIC(pcie0_write, FAB_EVNT_PCIE0_WR);
|
|
FME_EVENT_FABRIC(pcie1_read, FAB_EVNT_PCIE1_RD);
|
|
FME_EVENT_FABRIC(pcie1_write, FAB_EVNT_PCIE1_WR);
|
|
FME_EVENT_FABRIC(upi_read, FAB_EVNT_UPI_RD);
|
|
FME_EVENT_FABRIC(upi_write, FAB_EVNT_UPI_WR);
|
|
FME_EVENT_FABRIC(mmio_read, FAB_EVNT_MMIO_RD);
|
|
FME_EVENT_FABRIC(mmio_write, FAB_EVNT_MMIO_WR);
|
|
|
|
FME_EVENT_FABRIC_PORT(pcie0_read, FAB_EVNT_PCIE0_RD);
|
|
FME_EVENT_FABRIC_PORT(pcie0_write, FAB_EVNT_PCIE0_WR);
|
|
FME_EVENT_FABRIC_PORT(pcie1_read, FAB_EVNT_PCIE1_RD);
|
|
FME_EVENT_FABRIC_PORT(pcie1_write, FAB_EVNT_PCIE1_WR);
|
|
FME_EVENT_FABRIC_PORT(upi_read, FAB_EVNT_UPI_RD);
|
|
FME_EVENT_FABRIC_PORT(upi_write, FAB_EVNT_UPI_WR);
|
|
FME_EVENT_FABRIC_PORT(mmio_read, FAB_EVNT_MMIO_RD);
|
|
FME_EVENT_FABRIC_PORT(mmio_write, FAB_EVNT_MMIO_WR);
|
|
|
|
static struct attribute *fme_perf_fabric_events_attrs[] = {
|
|
&fme_perf_event_fab_pcie0_read.attr.attr,
|
|
&fme_perf_event_fab_pcie0_write.attr.attr,
|
|
&fme_perf_event_fab_pcie1_read.attr.attr,
|
|
&fme_perf_event_fab_pcie1_write.attr.attr,
|
|
&fme_perf_event_fab_upi_read.attr.attr,
|
|
&fme_perf_event_fab_upi_write.attr.attr,
|
|
&fme_perf_event_fab_mmio_read.attr.attr,
|
|
&fme_perf_event_fab_mmio_write.attr.attr,
|
|
&fme_perf_event_fab_port_pcie0_read.attr.attr,
|
|
&fme_perf_event_fab_port_pcie0_write.attr.attr,
|
|
&fme_perf_event_fab_port_pcie1_read.attr.attr,
|
|
&fme_perf_event_fab_port_pcie1_write.attr.attr,
|
|
&fme_perf_event_fab_port_upi_read.attr.attr,
|
|
&fme_perf_event_fab_port_upi_write.attr.attr,
|
|
&fme_perf_event_fab_port_mmio_read.attr.attr,
|
|
&fme_perf_event_fab_port_mmio_write.attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static umode_t fme_perf_fabric_events_visible(struct kobject *kobj,
|
|
struct attribute *attr, int n)
|
|
{
|
|
struct pmu *pmu = dev_get_drvdata(kobj_to_dev(kobj));
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(pmu);
|
|
struct dev_ext_attribute *eattr;
|
|
unsigned long var;
|
|
|
|
eattr = container_of(attr, struct dev_ext_attribute, attr.attr);
|
|
var = (unsigned long)eattr->var;
|
|
|
|
if (is_fabric_event_supported(priv, get_event(var), get_portid(var)))
|
|
return attr->mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct attribute_group fme_perf_fabric_events_group = {
|
|
.name = "events",
|
|
.attrs = fme_perf_fabric_events_attrs,
|
|
.is_visible = fme_perf_fabric_events_visible,
|
|
};
|
|
|
|
/* FME Perf VTD Events */
|
|
#define FME_EVENT_VTD_PORT(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_vtd_port_##_name = { \
|
|
.attr = FME_EVENT_ATTR(vtd_port_##_name), \
|
|
.var = FME_PORT_EVENT_CONFIG(_event, FME_EVTYPE_VTD), \
|
|
}
|
|
|
|
FME_EVENT_VTD_PORT(read_transaction, VTD_EVNT_AFU_MEM_RD_TRANS);
|
|
FME_EVENT_VTD_PORT(write_transaction, VTD_EVNT_AFU_MEM_WR_TRANS);
|
|
FME_EVENT_VTD_PORT(devtlb_read_hit, VTD_EVNT_AFU_DEVTLB_RD_HIT);
|
|
FME_EVENT_VTD_PORT(devtlb_write_hit, VTD_EVNT_AFU_DEVTLB_WR_HIT);
|
|
FME_EVENT_VTD_PORT(devtlb_4k_fill, VTD_EVNT_DEVTLB_4K_FILL);
|
|
FME_EVENT_VTD_PORT(devtlb_2m_fill, VTD_EVNT_DEVTLB_2M_FILL);
|
|
FME_EVENT_VTD_PORT(devtlb_1g_fill, VTD_EVNT_DEVTLB_1G_FILL);
|
|
|
|
static struct attribute *fme_perf_vtd_events_attrs[] = {
|
|
&fme_perf_event_vtd_port_read_transaction.attr.attr,
|
|
&fme_perf_event_vtd_port_write_transaction.attr.attr,
|
|
&fme_perf_event_vtd_port_devtlb_read_hit.attr.attr,
|
|
&fme_perf_event_vtd_port_devtlb_write_hit.attr.attr,
|
|
&fme_perf_event_vtd_port_devtlb_4k_fill.attr.attr,
|
|
&fme_perf_event_vtd_port_devtlb_2m_fill.attr.attr,
|
|
&fme_perf_event_vtd_port_devtlb_1g_fill.attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group fme_perf_vtd_events_group = {
|
|
.name = "events",
|
|
.attrs = fme_perf_vtd_events_attrs,
|
|
.is_visible = fme_perf_events_visible,
|
|
};
|
|
|
|
/* FME Perf VTD SIP Events */
|
|
#define FME_EVENT_VTD_SIP(_name, _event) \
|
|
static struct dev_ext_attribute fme_perf_event_vtd_sip_##_name = { \
|
|
.attr = FME_EVENT_ATTR(vtd_sip_##_name), \
|
|
.var = FME_EVENT_CONFIG(_event, FME_EVTYPE_VTD_SIP), \
|
|
}
|
|
|
|
FME_EVENT_VTD_SIP(iotlb_4k_hit, VTD_SIP_EVNT_IOTLB_4K_HIT);
|
|
FME_EVENT_VTD_SIP(iotlb_2m_hit, VTD_SIP_EVNT_IOTLB_2M_HIT);
|
|
FME_EVENT_VTD_SIP(iotlb_1g_hit, VTD_SIP_EVNT_IOTLB_1G_HIT);
|
|
FME_EVENT_VTD_SIP(slpwc_l3_hit, VTD_SIP_EVNT_SLPWC_L3_HIT);
|
|
FME_EVENT_VTD_SIP(slpwc_l4_hit, VTD_SIP_EVNT_SLPWC_L4_HIT);
|
|
FME_EVENT_VTD_SIP(rcc_hit, VTD_SIP_EVNT_RCC_HIT);
|
|
FME_EVENT_VTD_SIP(iotlb_4k_miss, VTD_SIP_EVNT_IOTLB_4K_MISS);
|
|
FME_EVENT_VTD_SIP(iotlb_2m_miss, VTD_SIP_EVNT_IOTLB_2M_MISS);
|
|
FME_EVENT_VTD_SIP(iotlb_1g_miss, VTD_SIP_EVNT_IOTLB_1G_MISS);
|
|
FME_EVENT_VTD_SIP(slpwc_l3_miss, VTD_SIP_EVNT_SLPWC_L3_MISS);
|
|
FME_EVENT_VTD_SIP(slpwc_l4_miss, VTD_SIP_EVNT_SLPWC_L4_MISS);
|
|
FME_EVENT_VTD_SIP(rcc_miss, VTD_SIP_EVNT_RCC_MISS);
|
|
|
|
static struct attribute *fme_perf_vtd_sip_events_attrs[] = {
|
|
&fme_perf_event_vtd_sip_iotlb_4k_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_iotlb_2m_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_iotlb_1g_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_slpwc_l3_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_slpwc_l4_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_rcc_hit.attr.attr,
|
|
&fme_perf_event_vtd_sip_iotlb_4k_miss.attr.attr,
|
|
&fme_perf_event_vtd_sip_iotlb_2m_miss.attr.attr,
|
|
&fme_perf_event_vtd_sip_iotlb_1g_miss.attr.attr,
|
|
&fme_perf_event_vtd_sip_slpwc_l3_miss.attr.attr,
|
|
&fme_perf_event_vtd_sip_slpwc_l4_miss.attr.attr,
|
|
&fme_perf_event_vtd_sip_rcc_miss.attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group fme_perf_vtd_sip_events_group = {
|
|
.name = "events",
|
|
.attrs = fme_perf_vtd_sip_events_attrs,
|
|
.is_visible = fme_perf_events_visible,
|
|
};
|
|
|
|
static const struct attribute_group *fme_perf_events_groups[] = {
|
|
&fme_perf_basic_events_group,
|
|
&fme_perf_cache_events_group,
|
|
&fme_perf_fabric_events_group,
|
|
&fme_perf_vtd_events_group,
|
|
&fme_perf_vtd_sip_events_group,
|
|
NULL,
|
|
};
|
|
|
|
static struct fme_perf_event_ops *get_event_ops(u32 evtype)
|
|
{
|
|
if (evtype > FME_EVTYPE_MAX)
|
|
return NULL;
|
|
|
|
return &fme_perf_event_ops[evtype];
|
|
}
|
|
|
|
static void fme_perf_event_destroy(struct perf_event *event)
|
|
{
|
|
struct fme_perf_event_ops *ops = get_event_ops(event->hw.event_base);
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(event->pmu);
|
|
|
|
if (ops->event_destroy)
|
|
ops->event_destroy(priv, event->hw.idx, event->hw.config_base);
|
|
}
|
|
|
|
static int fme_perf_event_init(struct perf_event *event)
|
|
{
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(event->pmu);
|
|
struct hw_perf_event *hwc = &event->hw;
|
|
struct fme_perf_event_ops *ops;
|
|
u32 eventid, evtype, portid;
|
|
|
|
/* test the event attr type check for PMU enumeration */
|
|
if (event->attr.type != event->pmu->type)
|
|
return -ENOENT;
|
|
|
|
/*
|
|
* fme counters are shared across all cores.
|
|
* Therefore, it does not support per-process mode.
|
|
* Also, it does not support event sampling mode.
|
|
*/
|
|
if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
|
|
return -EINVAL;
|
|
|
|
if (event->cpu < 0)
|
|
return -EINVAL;
|
|
|
|
if (event->cpu != priv->cpu)
|
|
return -EINVAL;
|
|
|
|
eventid = get_event(event->attr.config);
|
|
portid = get_portid(event->attr.config);
|
|
evtype = get_evtype(event->attr.config);
|
|
if (evtype > FME_EVTYPE_MAX)
|
|
return -EINVAL;
|
|
|
|
hwc->event_base = evtype;
|
|
hwc->idx = (int)eventid;
|
|
hwc->config_base = portid;
|
|
|
|
event->destroy = fme_perf_event_destroy;
|
|
|
|
dev_dbg(priv->dev, "%s event=0x%x, evtype=0x%x, portid=0x%x,\n",
|
|
__func__, eventid, evtype, portid);
|
|
|
|
ops = get_event_ops(evtype);
|
|
if (ops->event_init)
|
|
return ops->event_init(priv, eventid, portid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fme_perf_event_update(struct perf_event *event)
|
|
{
|
|
struct fme_perf_event_ops *ops = get_event_ops(event->hw.event_base);
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(event->pmu);
|
|
struct hw_perf_event *hwc = &event->hw;
|
|
u64 now, prev, delta;
|
|
|
|
now = ops->read_counter(priv, (u32)hwc->idx, hwc->config_base);
|
|
prev = local64_read(&hwc->prev_count);
|
|
delta = now - prev;
|
|
|
|
local64_add(delta, &event->count);
|
|
}
|
|
|
|
static void fme_perf_event_start(struct perf_event *event, int flags)
|
|
{
|
|
struct fme_perf_event_ops *ops = get_event_ops(event->hw.event_base);
|
|
struct fme_perf_priv *priv = to_fme_perf_priv(event->pmu);
|
|
struct hw_perf_event *hwc = &event->hw;
|
|
u64 count;
|
|
|
|
count = ops->read_counter(priv, (u32)hwc->idx, hwc->config_base);
|
|
local64_set(&hwc->prev_count, count);
|
|
}
|
|
|
|
static void fme_perf_event_stop(struct perf_event *event, int flags)
|
|
{
|
|
fme_perf_event_update(event);
|
|
}
|
|
|
|
static int fme_perf_event_add(struct perf_event *event, int flags)
|
|
{
|
|
if (flags & PERF_EF_START)
|
|
fme_perf_event_start(event, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fme_perf_event_del(struct perf_event *event, int flags)
|
|
{
|
|
fme_perf_event_stop(event, PERF_EF_UPDATE);
|
|
}
|
|
|
|
static void fme_perf_event_read(struct perf_event *event)
|
|
{
|
|
fme_perf_event_update(event);
|
|
}
|
|
|
|
static void fme_perf_setup_hardware(struct fme_perf_priv *priv)
|
|
{
|
|
void __iomem *base = priv->ioaddr;
|
|
u64 v;
|
|
|
|
/* read and save current working mode for fabric counters */
|
|
v = readq(base + FAB_CTRL);
|
|
|
|
if (FIELD_GET(FAB_PORT_FILTER, v) == FAB_PORT_FILTER_DISABLE)
|
|
priv->fab_port_id = FME_PORTID_ROOT;
|
|
else
|
|
priv->fab_port_id = FIELD_GET(FAB_PORT_ID, v);
|
|
}
|
|
|
|
static int fme_perf_pmu_register(struct platform_device *pdev,
|
|
struct fme_perf_priv *priv)
|
|
{
|
|
struct pmu *pmu = &priv->pmu;
|
|
char *name;
|
|
int ret;
|
|
|
|
spin_lock_init(&priv->fab_lock);
|
|
|
|
fme_perf_setup_hardware(priv);
|
|
|
|
pmu->task_ctx_nr = perf_invalid_context;
|
|
pmu->attr_groups = fme_perf_groups;
|
|
pmu->attr_update = fme_perf_events_groups;
|
|
pmu->event_init = fme_perf_event_init;
|
|
pmu->add = fme_perf_event_add;
|
|
pmu->del = fme_perf_event_del;
|
|
pmu->start = fme_perf_event_start;
|
|
pmu->stop = fme_perf_event_stop;
|
|
pmu->read = fme_perf_event_read;
|
|
pmu->capabilities = PERF_PMU_CAP_NO_INTERRUPT |
|
|
PERF_PMU_CAP_NO_EXCLUDE;
|
|
|
|
name = devm_kasprintf(priv->dev, GFP_KERNEL, "dfl_fme%d", pdev->id);
|
|
|
|
ret = perf_pmu_register(pmu, name, -1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fme_perf_pmu_unregister(struct fme_perf_priv *priv)
|
|
{
|
|
perf_pmu_unregister(&priv->pmu);
|
|
}
|
|
|
|
static int fme_perf_offline_cpu(unsigned int cpu, struct hlist_node *node)
|
|
{
|
|
struct fme_perf_priv *priv;
|
|
int target;
|
|
|
|
priv = hlist_entry_safe(node, struct fme_perf_priv, node);
|
|
|
|
if (cpu != priv->cpu)
|
|
return 0;
|
|
|
|
target = cpumask_any_but(cpu_online_mask, cpu);
|
|
if (target >= nr_cpu_ids)
|
|
return 0;
|
|
|
|
priv->cpu = target;
|
|
return 0;
|
|
}
|
|
|
|
static int fme_perf_init(struct platform_device *pdev,
|
|
struct dfl_feature *feature)
|
|
{
|
|
struct fme_perf_priv *priv;
|
|
int ret;
|
|
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->dev = &pdev->dev;
|
|
priv->ioaddr = feature->ioaddr;
|
|
priv->id = feature->id;
|
|
priv->cpu = raw_smp_processor_id();
|
|
|
|
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
|
|
"perf/fpga/dfl_fme:online",
|
|
NULL, fme_perf_offline_cpu);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
priv->cpuhp_state = ret;
|
|
|
|
/* Register the pmu instance for cpu hotplug */
|
|
ret = cpuhp_state_add_instance_nocalls(priv->cpuhp_state, &priv->node);
|
|
if (ret)
|
|
goto cpuhp_instance_err;
|
|
|
|
ret = fme_perf_pmu_register(pdev, priv);
|
|
if (ret)
|
|
goto pmu_register_err;
|
|
|
|
feature->priv = priv;
|
|
return 0;
|
|
|
|
pmu_register_err:
|
|
cpuhp_state_remove_instance_nocalls(priv->cpuhp_state, &priv->node);
|
|
cpuhp_instance_err:
|
|
cpuhp_remove_multi_state(priv->cpuhp_state);
|
|
return ret;
|
|
}
|
|
|
|
static void fme_perf_uinit(struct platform_device *pdev,
|
|
struct dfl_feature *feature)
|
|
{
|
|
struct fme_perf_priv *priv = feature->priv;
|
|
|
|
fme_perf_pmu_unregister(priv);
|
|
cpuhp_state_remove_instance_nocalls(priv->cpuhp_state, &priv->node);
|
|
cpuhp_remove_multi_state(priv->cpuhp_state);
|
|
}
|
|
|
|
const struct dfl_feature_id fme_perf_id_table[] = {
|
|
{.id = FME_FEATURE_ID_GLOBAL_IPERF,},
|
|
{.id = FME_FEATURE_ID_GLOBAL_DPERF,},
|
|
{0,}
|
|
};
|
|
|
|
const struct dfl_feature_ops fme_perf_ops = {
|
|
.init = fme_perf_init,
|
|
.uinit = fme_perf_uinit,
|
|
};
|