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![Robin Murphy](/assets/img/avatar_default.png)
In general, detailed performance analysis will require knoweldge of the the SoC beyond the CMN itself - e.g. which actual CPUs/peripherals/etc. are connected to each node. However for certain development and bringup tasks it can be useful to have a quick overview of the CMN internal topology to hand too. Add a debugfs file to map this out. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/159fd4d7e19fb3c8801a8cb64ee73ec50f55903c.1638530442.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022 lines
57 KiB
C
2022 lines
57 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2016-2020 Arm Limited
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// CMN-600 Coherent Mesh Network PMU driver
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#include <linux/acpi.h>
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#include <linux/bitfield.h>
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#include <linux/bitops.h>
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#include <linux/debugfs.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/io-64-nonatomic-lo-hi.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/perf_event.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/sort.h>
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/* Common register stuff */
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#define CMN_NODE_INFO 0x0000
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#define CMN_NI_NODE_TYPE GENMASK_ULL(15, 0)
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#define CMN_NI_NODE_ID GENMASK_ULL(31, 16)
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#define CMN_NI_LOGICAL_ID GENMASK_ULL(47, 32)
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#define CMN_NODEID_DEVID(reg) ((reg) & 3)
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#define CMN_NODEID_EXT_DEVID(reg) ((reg) & 1)
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#define CMN_NODEID_PID(reg) (((reg) >> 2) & 1)
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#define CMN_NODEID_EXT_PID(reg) (((reg) >> 1) & 3)
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#define CMN_NODEID_1x1_PID(reg) (((reg) >> 2) & 7)
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#define CMN_NODEID_X(reg, bits) ((reg) >> (3 + (bits)))
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#define CMN_NODEID_Y(reg, bits) (((reg) >> 3) & ((1U << (bits)) - 1))
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#define CMN_CHILD_INFO 0x0080
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#define CMN_CI_CHILD_COUNT GENMASK_ULL(15, 0)
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#define CMN_CI_CHILD_PTR_OFFSET GENMASK_ULL(31, 16)
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#define CMN_CHILD_NODE_ADDR GENMASK(27, 0)
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#define CMN_CHILD_NODE_EXTERNAL BIT(31)
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#define CMN_MAX_DIMENSION 8
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#define CMN_MAX_XPS (CMN_MAX_DIMENSION * CMN_MAX_DIMENSION)
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#define CMN_MAX_DTMS (CMN_MAX_XPS + (CMN_MAX_DIMENSION - 1) * 4)
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/* The CFG node has various info besides the discovery tree */
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#define CMN_CFGM_PERIPH_ID_2 0x0010
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#define CMN_CFGM_PID2_REVISION GENMASK(7, 4)
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#define CMN_CFGM_INFO_GLOBAL 0x900
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#define CMN_INFO_MULTIPLE_DTM_EN BIT_ULL(63)
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#define CMN_INFO_RSP_VC_NUM GENMASK_ULL(53, 52)
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#define CMN_INFO_DAT_VC_NUM GENMASK_ULL(51, 50)
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/* XPs also have some local topology info which has uses too */
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#define CMN_MXP__CONNECT_INFO_P0 0x0008
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#define CMN_MXP__CONNECT_INFO_P1 0x0010
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#define CMN_MXP__CONNECT_INFO_P2 0x0028
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#define CMN_MXP__CONNECT_INFO_P3 0x0030
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#define CMN_MXP__CONNECT_INFO_P4 0x0038
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#define CMN_MXP__CONNECT_INFO_P5 0x0040
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/* PMU registers occupy the 3rd 4KB page of each node's region */
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#define CMN_PMU_OFFSET 0x2000
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/* For most nodes, this is all there is */
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#define CMN_PMU_EVENT_SEL 0x000
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#define CMN_PMU_EVENTn_ID_SHIFT(n) ((n) * 8)
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/* DTMs live in the PMU space of XP registers */
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#define CMN_DTM_WPn(n) (0x1A0 + (n) * 0x18)
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#define CMN_DTM_WPn_CONFIG(n) (CMN_DTM_WPn(n) + 0x00)
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#define CMN_DTM_WPn_CONFIG_WP_DEV_SEL2 GENMASK_ULL(18,17)
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#define CMN_DTM_WPn_CONFIG_WP_COMBINE BIT(6)
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#define CMN_DTM_WPn_CONFIG_WP_EXCLUSIVE BIT(5)
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#define CMN_DTM_WPn_CONFIG_WP_GRP BIT(4)
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#define CMN_DTM_WPn_CONFIG_WP_CHN_SEL GENMASK_ULL(3, 1)
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#define CMN_DTM_WPn_CONFIG_WP_DEV_SEL BIT(0)
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#define CMN_DTM_WPn_VAL(n) (CMN_DTM_WPn(n) + 0x08)
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#define CMN_DTM_WPn_MASK(n) (CMN_DTM_WPn(n) + 0x10)
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#define CMN_DTM_PMU_CONFIG 0x210
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#define CMN__PMEVCNT0_INPUT_SEL GENMASK_ULL(37, 32)
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#define CMN__PMEVCNT0_INPUT_SEL_WP 0x00
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#define CMN__PMEVCNT0_INPUT_SEL_XP 0x04
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#define CMN__PMEVCNT0_INPUT_SEL_DEV 0x10
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#define CMN__PMEVCNT0_GLOBAL_NUM GENMASK_ULL(18, 16)
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#define CMN__PMEVCNTn_GLOBAL_NUM_SHIFT(n) ((n) * 4)
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#define CMN__PMEVCNT_PAIRED(n) BIT(4 + (n))
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#define CMN__PMEVCNT23_COMBINED BIT(2)
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#define CMN__PMEVCNT01_COMBINED BIT(1)
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#define CMN_DTM_PMU_CONFIG_PMU_EN BIT(0)
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#define CMN_DTM_PMEVCNT 0x220
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#define CMN_DTM_PMEVCNTSR 0x240
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#define CMN_DTM_UNIT_INFO 0x0910
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#define CMN_DTM_NUM_COUNTERS 4
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/* Want more local counters? Why not replicate the whole DTM! Ugh... */
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#define CMN_DTM_OFFSET(n) ((n) * 0x200)
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/* The DTC node is where the magic happens */
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#define CMN_DT_DTC_CTL 0x0a00
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#define CMN_DT_DTC_CTL_DT_EN BIT(0)
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/* DTC counters are paired in 64-bit registers on a 16-byte stride. Yuck */
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#define _CMN_DT_CNT_REG(n) ((((n) / 2) * 4 + (n) % 2) * 4)
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#define CMN_DT_PMEVCNT(n) (CMN_PMU_OFFSET + _CMN_DT_CNT_REG(n))
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#define CMN_DT_PMCCNTR (CMN_PMU_OFFSET + 0x40)
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#define CMN_DT_PMEVCNTSR(n) (CMN_PMU_OFFSET + 0x50 + _CMN_DT_CNT_REG(n))
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#define CMN_DT_PMCCNTRSR (CMN_PMU_OFFSET + 0x90)
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#define CMN_DT_PMCR (CMN_PMU_OFFSET + 0x100)
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#define CMN_DT_PMCR_PMU_EN BIT(0)
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#define CMN_DT_PMCR_CNTR_RST BIT(5)
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#define CMN_DT_PMCR_OVFL_INTR_EN BIT(6)
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#define CMN_DT_PMOVSR (CMN_PMU_OFFSET + 0x118)
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#define CMN_DT_PMOVSR_CLR (CMN_PMU_OFFSET + 0x120)
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#define CMN_DT_PMSSR (CMN_PMU_OFFSET + 0x128)
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#define CMN_DT_PMSSR_SS_STATUS(n) BIT(n)
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#define CMN_DT_PMSRR (CMN_PMU_OFFSET + 0x130)
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#define CMN_DT_PMSRR_SS_REQ BIT(0)
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#define CMN_DT_NUM_COUNTERS 8
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#define CMN_MAX_DTCS 4
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/*
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* Even in the worst case a DTC counter can't wrap in fewer than 2^42 cycles,
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* so throwing away one bit to make overflow handling easy is no big deal.
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*/
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#define CMN_COUNTER_INIT 0x80000000
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/* Similarly for the 40-bit cycle counter */
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#define CMN_CC_INIT 0x8000000000ULL
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/* Event attributes */
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#define CMN_CONFIG_TYPE GENMASK_ULL(15, 0)
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#define CMN_CONFIG_EVENTID GENMASK_ULL(23, 16)
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#define CMN_CONFIG_OCCUPID GENMASK_ULL(27, 24)
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#define CMN_CONFIG_BYNODEID BIT_ULL(31)
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#define CMN_CONFIG_NODEID GENMASK_ULL(47, 32)
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#define CMN_EVENT_TYPE(event) FIELD_GET(CMN_CONFIG_TYPE, (event)->attr.config)
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#define CMN_EVENT_EVENTID(event) FIELD_GET(CMN_CONFIG_EVENTID, (event)->attr.config)
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#define CMN_EVENT_OCCUPID(event) FIELD_GET(CMN_CONFIG_OCCUPID, (event)->attr.config)
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#define CMN_EVENT_BYNODEID(event) FIELD_GET(CMN_CONFIG_BYNODEID, (event)->attr.config)
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#define CMN_EVENT_NODEID(event) FIELD_GET(CMN_CONFIG_NODEID, (event)->attr.config)
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#define CMN_CONFIG_WP_COMBINE GENMASK_ULL(27, 24)
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#define CMN_CONFIG_WP_DEV_SEL GENMASK_ULL(50, 48)
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#define CMN_CONFIG_WP_CHN_SEL GENMASK_ULL(55, 51)
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#define CMN_CONFIG_WP_GRP BIT_ULL(56)
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#define CMN_CONFIG_WP_EXCLUSIVE BIT_ULL(57)
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#define CMN_CONFIG1_WP_VAL GENMASK_ULL(63, 0)
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#define CMN_CONFIG2_WP_MASK GENMASK_ULL(63, 0)
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#define CMN_EVENT_WP_COMBINE(event) FIELD_GET(CMN_CONFIG_WP_COMBINE, (event)->attr.config)
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#define CMN_EVENT_WP_DEV_SEL(event) FIELD_GET(CMN_CONFIG_WP_DEV_SEL, (event)->attr.config)
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#define CMN_EVENT_WP_CHN_SEL(event) FIELD_GET(CMN_CONFIG_WP_CHN_SEL, (event)->attr.config)
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#define CMN_EVENT_WP_GRP(event) FIELD_GET(CMN_CONFIG_WP_GRP, (event)->attr.config)
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#define CMN_EVENT_WP_EXCLUSIVE(event) FIELD_GET(CMN_CONFIG_WP_EXCLUSIVE, (event)->attr.config)
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#define CMN_EVENT_WP_VAL(event) FIELD_GET(CMN_CONFIG1_WP_VAL, (event)->attr.config1)
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#define CMN_EVENT_WP_MASK(event) FIELD_GET(CMN_CONFIG2_WP_MASK, (event)->attr.config2)
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/* Made-up event IDs for watchpoint direction */
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#define CMN_WP_UP 0
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#define CMN_WP_DOWN 2
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enum cmn_model {
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CMN_ANY = -1,
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CMN600 = 1,
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CI700 = 2,
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};
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/* CMN-600 r0px shouldn't exist in silicon, thankfully */
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enum cmn_revision {
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CMN600_R1P0,
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CMN600_R1P1,
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CMN600_R1P2,
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CMN600_R1P3,
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CMN600_R2P0,
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CMN600_R3P0,
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CMN600_R3P1,
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CI700_R0P0 = 0,
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CI700_R1P0,
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CI700_R2P0,
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};
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enum cmn_node_type {
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CMN_TYPE_INVALID,
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CMN_TYPE_DVM,
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CMN_TYPE_CFG,
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CMN_TYPE_DTC,
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CMN_TYPE_HNI,
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CMN_TYPE_HNF,
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CMN_TYPE_XP,
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CMN_TYPE_SBSX,
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CMN_TYPE_MPAM_S,
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CMN_TYPE_MPAM_NS,
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CMN_TYPE_RNI,
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CMN_TYPE_RND = 0xd,
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CMN_TYPE_RNSAM = 0xf,
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CMN_TYPE_MTSX,
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CMN_TYPE_CXRA = 0x100,
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CMN_TYPE_CXHA = 0x101,
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CMN_TYPE_CXLA = 0x102,
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/* Not a real node type */
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CMN_TYPE_WP = 0x7770
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};
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struct arm_cmn_node {
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void __iomem *pmu_base;
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u16 id, logid;
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enum cmn_node_type type;
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int dtm;
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union {
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/* DN/HN-F/CXHA */
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struct {
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u8 occupid_val;
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u8 occupid_count;
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};
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/* XP */
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u8 dtc;
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};
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union {
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u8 event[4];
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__le32 event_sel;
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};
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};
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struct arm_cmn_dtm {
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void __iomem *base;
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u32 pmu_config_low;
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union {
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u8 input_sel[4];
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__le32 pmu_config_high;
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};
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s8 wp_event[4];
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};
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struct arm_cmn_dtc {
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void __iomem *base;
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int irq;
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int irq_friend;
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bool cc_active;
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struct perf_event *counters[CMN_DT_NUM_COUNTERS];
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struct perf_event *cycles;
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};
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#define CMN_STATE_DISABLED BIT(0)
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#define CMN_STATE_TXN BIT(1)
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struct arm_cmn {
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struct device *dev;
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void __iomem *base;
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unsigned int state;
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enum cmn_revision rev;
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enum cmn_model model;
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u8 mesh_x;
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u8 mesh_y;
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u16 num_xps;
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u16 num_dns;
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bool multi_dtm;
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u8 ports_used;
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struct {
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unsigned int rsp_vc_num : 2;
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unsigned int dat_vc_num : 2;
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};
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struct arm_cmn_node *xps;
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struct arm_cmn_node *dns;
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struct arm_cmn_dtm *dtms;
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struct arm_cmn_dtc *dtc;
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unsigned int num_dtcs;
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int cpu;
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struct hlist_node cpuhp_node;
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struct pmu pmu;
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struct dentry *debug;
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};
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#define to_cmn(p) container_of(p, struct arm_cmn, pmu)
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static int arm_cmn_hp_state;
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struct arm_cmn_nodeid {
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u8 x;
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u8 y;
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u8 port;
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u8 dev;
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};
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static int arm_cmn_xyidbits(const struct arm_cmn *cmn)
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{
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int dim = max(cmn->mesh_x, cmn->mesh_y);
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return dim > 4 ? 3 : 2;
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}
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static struct arm_cmn_nodeid arm_cmn_nid(const struct arm_cmn *cmn, u16 id)
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{
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struct arm_cmn_nodeid nid;
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if (cmn->num_xps == 1) {
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nid.x = 0;
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nid.y = 0;
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nid.port = CMN_NODEID_1x1_PID(id);
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nid.dev = CMN_NODEID_DEVID(id);
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} else {
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int bits = arm_cmn_xyidbits(cmn);
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nid.x = CMN_NODEID_X(id, bits);
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nid.y = CMN_NODEID_Y(id, bits);
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if (cmn->ports_used & 0xc) {
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nid.port = CMN_NODEID_EXT_PID(id);
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nid.dev = CMN_NODEID_EXT_DEVID(id);
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} else {
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nid.port = CMN_NODEID_PID(id);
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nid.dev = CMN_NODEID_DEVID(id);
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}
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}
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return nid;
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}
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static struct arm_cmn_node *arm_cmn_node_to_xp(const struct arm_cmn *cmn,
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const struct arm_cmn_node *dn)
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{
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struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
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int xp_idx = cmn->mesh_x * nid.y + nid.x;
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return cmn->xps + xp_idx;
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}
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static struct arm_cmn_node *arm_cmn_node(const struct arm_cmn *cmn,
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enum cmn_node_type type)
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{
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struct arm_cmn_node *dn;
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for (dn = cmn->dns; dn->type; dn++)
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if (dn->type == type)
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return dn;
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return NULL;
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}
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struct dentry *arm_cmn_debugfs;
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#ifdef CONFIG_DEBUG_FS
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static const char *arm_cmn_device_type(u8 type)
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{
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switch(type) {
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case 0x01: return " RN-I |";
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case 0x02: return " RN-D |";
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case 0x04: return " RN-F_B |";
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case 0x05: return "RN-F_B_E|";
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case 0x06: return " RN-F_A |";
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case 0x07: return "RN-F_A_E|";
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case 0x08: return " HN-T |";
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case 0x09: return " HN-I |";
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case 0x0a: return " HN-D |";
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case 0x0c: return " SN-F |";
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case 0x0d: return " SBSX |";
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case 0x0e: return " HN-F |";
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case 0x0f: return " SN-F_E |";
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case 0x10: return " SN-F_D |";
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case 0x11: return " CXHA |";
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case 0x12: return " CXRA |";
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case 0x13: return " CXRH |";
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case 0x14: return " RN-F_D |";
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case 0x15: return "RN-F_D_E|";
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case 0x16: return " RN-F_C |";
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case 0x17: return "RN-F_C_E|";
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case 0x1c: return " MTSX |";
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default: return " |";
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}
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}
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static void arm_cmn_show_logid(struct seq_file *s, int x, int y, int p, int d)
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{
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struct arm_cmn *cmn = s->private;
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struct arm_cmn_node *dn;
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for (dn = cmn->dns; dn->type; dn++) {
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struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
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if (dn->type == CMN_TYPE_XP)
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continue;
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/* Ignore the extra components that will overlap on some ports */
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if (dn->type < CMN_TYPE_HNI)
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continue;
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if (nid.x != x || nid.y != y || nid.port != p || nid.dev != d)
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continue;
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seq_printf(s, " #%-2d |", dn->logid);
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return;
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}
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seq_puts(s, " |");
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}
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static int arm_cmn_map_show(struct seq_file *s, void *data)
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{
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struct arm_cmn *cmn = s->private;
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int x, y, p, pmax = fls(cmn->ports_used);
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seq_puts(s, " X");
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for (x = 0; x < cmn->mesh_x; x++)
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seq_printf(s, " %d ", x);
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seq_puts(s, "\nY P D+");
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y = cmn->mesh_y;
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while (y--) {
|
|
int xp_base = cmn->mesh_x * y;
|
|
u8 port[6][CMN_MAX_DIMENSION];
|
|
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
seq_puts(s, "--------+");
|
|
|
|
seq_printf(s, "\n%d |", y);
|
|
for (x = 0; x < cmn->mesh_x; x++) {
|
|
struct arm_cmn_node *xp = cmn->xps + xp_base + x;
|
|
void __iomem *base = xp->pmu_base - CMN_PMU_OFFSET;
|
|
|
|
port[0][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P0);
|
|
port[1][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P1);
|
|
port[2][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P2);
|
|
port[3][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P3);
|
|
port[4][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P4);
|
|
port[5][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P5);
|
|
seq_printf(s, " XP #%-2d |", xp_base + x);
|
|
}
|
|
|
|
seq_puts(s, "\n |");
|
|
for (x = 0; x < cmn->mesh_x; x++) {
|
|
u8 dtc = cmn->xps[xp_base + x].dtc;
|
|
|
|
if (dtc & (dtc - 1))
|
|
seq_puts(s, " DTC ?? |");
|
|
else
|
|
seq_printf(s, " DTC %ld |", __ffs(dtc));
|
|
}
|
|
seq_puts(s, "\n |");
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
seq_puts(s, "........|");
|
|
|
|
for (p = 0; p < pmax; p++) {
|
|
seq_printf(s, "\n %d |", p);
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
seq_puts(s, arm_cmn_device_type(port[p][x]));
|
|
seq_puts(s, "\n 0|");
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
arm_cmn_show_logid(s, x, y, p, 0);
|
|
seq_puts(s, "\n 1|");
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
arm_cmn_show_logid(s, x, y, p, 1);
|
|
}
|
|
seq_puts(s, "\n-----+");
|
|
}
|
|
for (x = 0; x < cmn->mesh_x; x++)
|
|
seq_puts(s, "--------+");
|
|
seq_puts(s, "\n");
|
|
return 0;
|
|
}
|
|
DEFINE_SHOW_ATTRIBUTE(arm_cmn_map);
|
|
|
|
static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id)
|
|
{
|
|
const char *name = "map";
|
|
|
|
if (id > 0)
|
|
name = devm_kasprintf(cmn->dev, GFP_KERNEL, "map_%d", id);
|
|
if (!name)
|
|
return;
|
|
|
|
cmn->debug = debugfs_create_file(name, 0444, arm_cmn_debugfs, cmn, &arm_cmn_map_fops);
|
|
}
|
|
#else
|
|
static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id) {}
|
|
#endif
|
|
|
|
struct arm_cmn_hw_event {
|
|
struct arm_cmn_node *dn;
|
|
u64 dtm_idx[2];
|
|
unsigned int dtc_idx;
|
|
u8 dtcs_used;
|
|
u8 num_dns;
|
|
u8 dtm_offset;
|
|
};
|
|
|
|
#define for_each_hw_dn(hw, dn, i) \
|
|
for (i = 0, dn = hw->dn; i < hw->num_dns; i++, dn++)
|
|
|
|
static struct arm_cmn_hw_event *to_cmn_hw(struct perf_event *event)
|
|
{
|
|
BUILD_BUG_ON(sizeof(struct arm_cmn_hw_event) > offsetof(struct hw_perf_event, target));
|
|
return (struct arm_cmn_hw_event *)&event->hw;
|
|
}
|
|
|
|
static void arm_cmn_set_index(u64 x[], unsigned int pos, unsigned int val)
|
|
{
|
|
x[pos / 32] |= (u64)val << ((pos % 32) * 2);
|
|
}
|
|
|
|
static unsigned int arm_cmn_get_index(u64 x[], unsigned int pos)
|
|
{
|
|
return (x[pos / 32] >> ((pos % 32) * 2)) & 3;
|
|
}
|
|
|
|
struct arm_cmn_event_attr {
|
|
struct device_attribute attr;
|
|
enum cmn_model model;
|
|
enum cmn_node_type type;
|
|
u8 eventid;
|
|
u8 occupid;
|
|
};
|
|
|
|
struct arm_cmn_format_attr {
|
|
struct device_attribute attr;
|
|
u64 field;
|
|
int config;
|
|
};
|
|
|
|
#define CMN_EVENT_ATTR(_model, _name, _type, _eventid, _occupid) \
|
|
(&((struct arm_cmn_event_attr[]) {{ \
|
|
.attr = __ATTR(_name, 0444, arm_cmn_event_show, NULL), \
|
|
.model = _model, \
|
|
.type = _type, \
|
|
.eventid = _eventid, \
|
|
.occupid = _occupid, \
|
|
}})[0].attr.attr)
|
|
|
|
static bool arm_cmn_is_occup_event(enum cmn_model model,
|
|
enum cmn_node_type type, unsigned int id)
|
|
{
|
|
if (type == CMN_TYPE_DVM)
|
|
return (model == CMN600 && id == 0x05) ||
|
|
(model == CI700 && id == 0x0c);
|
|
return type == CMN_TYPE_HNF && id == 0x0f;
|
|
}
|
|
|
|
static ssize_t arm_cmn_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct arm_cmn_event_attr *eattr;
|
|
|
|
eattr = container_of(attr, typeof(*eattr), attr);
|
|
|
|
if (eattr->type == CMN_TYPE_DTC)
|
|
return sysfs_emit(buf, "type=0x%x\n", eattr->type);
|
|
|
|
if (eattr->type == CMN_TYPE_WP)
|
|
return sysfs_emit(buf,
|
|
"type=0x%x,eventid=0x%x,wp_dev_sel=?,wp_chn_sel=?,wp_grp=?,wp_val=?,wp_mask=?\n",
|
|
eattr->type, eattr->eventid);
|
|
|
|
if (arm_cmn_is_occup_event(eattr->model, eattr->type, eattr->eventid))
|
|
return sysfs_emit(buf, "type=0x%x,eventid=0x%x,occupid=0x%x\n",
|
|
eattr->type, eattr->eventid, eattr->occupid);
|
|
|
|
return sysfs_emit(buf, "type=0x%x,eventid=0x%x\n", eattr->type,
|
|
eattr->eventid);
|
|
}
|
|
|
|
static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
int unused)
|
|
{
|
|
struct device *dev = kobj_to_dev(kobj);
|
|
struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
|
|
struct arm_cmn_event_attr *eattr;
|
|
|
|
eattr = container_of(attr, typeof(*eattr), attr.attr);
|
|
|
|
if (!(eattr->model & cmn->model))
|
|
return 0;
|
|
|
|
/* Watchpoints aren't nodes, so avoid confusion */
|
|
if (eattr->type == CMN_TYPE_WP)
|
|
return attr->mode;
|
|
|
|
/* Hide XP events for unused interfaces/channels */
|
|
if (eattr->type == CMN_TYPE_XP) {
|
|
unsigned int intf = (eattr->eventid >> 2) & 7;
|
|
unsigned int chan = eattr->eventid >> 5;
|
|
|
|
if ((intf & 4) && !(cmn->ports_used & BIT(intf & 3)))
|
|
return 0;
|
|
|
|
if ((chan == 5 && cmn->rsp_vc_num < 2) ||
|
|
(chan == 6 && cmn->dat_vc_num < 2))
|
|
return 0;
|
|
}
|
|
|
|
/* Revision-specific differences */
|
|
if (cmn->model == CMN600 && cmn->rev < CMN600_R1P2) {
|
|
if (eattr->type == CMN_TYPE_HNF && eattr->eventid == 0x1b)
|
|
return 0;
|
|
}
|
|
|
|
if (!arm_cmn_node(cmn, eattr->type))
|
|
return 0;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
#define _CMN_EVENT_DVM(_model, _name, _event, _occup) \
|
|
CMN_EVENT_ATTR(_model, dn_##_name, CMN_TYPE_DVM, _event, _occup)
|
|
#define CMN_EVENT_DTC(_name) \
|
|
CMN_EVENT_ATTR(CMN_ANY, dtc_##_name, CMN_TYPE_DTC, 0, 0)
|
|
#define _CMN_EVENT_HNF(_model, _name, _event, _occup) \
|
|
CMN_EVENT_ATTR(_model, hnf_##_name, CMN_TYPE_HNF, _event, _occup)
|
|
#define CMN_EVENT_HNI(_name, _event) \
|
|
CMN_EVENT_ATTR(CMN_ANY, hni_##_name, CMN_TYPE_HNI, _event, 0)
|
|
#define __CMN_EVENT_XP(_name, _event) \
|
|
CMN_EVENT_ATTR(CMN_ANY, mxp_##_name, CMN_TYPE_XP, _event, 0)
|
|
#define CMN_EVENT_SBSX(_model, _name, _event) \
|
|
CMN_EVENT_ATTR(_model, sbsx_##_name, CMN_TYPE_SBSX, _event, 0)
|
|
#define CMN_EVENT_RNID(_model, _name, _event) \
|
|
CMN_EVENT_ATTR(_model, rnid_##_name, CMN_TYPE_RNI, _event, 0)
|
|
#define CMN_EVENT_MTSX(_name, _event) \
|
|
CMN_EVENT_ATTR(CMN_ANY, mtsx_##_name, CMN_TYPE_MTSX, _event, 0)
|
|
|
|
#define CMN_EVENT_DVM(_model, _name, _event) \
|
|
_CMN_EVENT_DVM(_model, _name, _event, 0)
|
|
#define CMN_EVENT_HNF(_model, _name, _event) \
|
|
_CMN_EVENT_HNF(_model, _name, _event, 0)
|
|
#define _CMN_EVENT_XP(_name, _event) \
|
|
__CMN_EVENT_XP(e_##_name, (_event) | (0 << 2)), \
|
|
__CMN_EVENT_XP(w_##_name, (_event) | (1 << 2)), \
|
|
__CMN_EVENT_XP(n_##_name, (_event) | (2 << 2)), \
|
|
__CMN_EVENT_XP(s_##_name, (_event) | (3 << 2)), \
|
|
__CMN_EVENT_XP(p0_##_name, (_event) | (4 << 2)), \
|
|
__CMN_EVENT_XP(p1_##_name, (_event) | (5 << 2)), \
|
|
__CMN_EVENT_XP(p2_##_name, (_event) | (6 << 2)), \
|
|
__CMN_EVENT_XP(p3_##_name, (_event) | (7 << 2))
|
|
|
|
/* Good thing there are only 3 fundamental XP events... */
|
|
#define CMN_EVENT_XP(_name, _event) \
|
|
_CMN_EVENT_XP(req_##_name, (_event) | (0 << 5)), \
|
|
_CMN_EVENT_XP(rsp_##_name, (_event) | (1 << 5)), \
|
|
_CMN_EVENT_XP(snp_##_name, (_event) | (2 << 5)), \
|
|
_CMN_EVENT_XP(dat_##_name, (_event) | (3 << 5)), \
|
|
_CMN_EVENT_XP(pub_##_name, (_event) | (4 << 5)), \
|
|
_CMN_EVENT_XP(rsp2_##_name, (_event) | (5 << 5)), \
|
|
_CMN_EVENT_XP(dat2_##_name, (_event) | (6 << 5))
|
|
|
|
|
|
static struct attribute *arm_cmn_event_attrs[] = {
|
|
CMN_EVENT_DTC(cycles),
|
|
|
|
/*
|
|
* DVM node events conflict with HN-I events in the equivalent PMU
|
|
* slot, but our lazy short-cut of using the DTM counter index for
|
|
* the PMU index as well happens to avoid that by construction.
|
|
*/
|
|
CMN_EVENT_DVM(CMN600, rxreq_dvmop, 0x01),
|
|
CMN_EVENT_DVM(CMN600, rxreq_dvmsync, 0x02),
|
|
CMN_EVENT_DVM(CMN600, rxreq_dvmop_vmid_filtered, 0x03),
|
|
CMN_EVENT_DVM(CMN600, rxreq_retried, 0x04),
|
|
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_all, 0x05, 0),
|
|
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmop, 0x05, 1),
|
|
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmsync, 0x05, 2),
|
|
CMN_EVENT_DVM(CI700, dvmop_tlbi, 0x01),
|
|
CMN_EVENT_DVM(CI700, dvmop_bpi, 0x02),
|
|
CMN_EVENT_DVM(CI700, dvmop_pici, 0x03),
|
|
CMN_EVENT_DVM(CI700, dvmop_vici, 0x04),
|
|
CMN_EVENT_DVM(CI700, dvmsync, 0x05),
|
|
CMN_EVENT_DVM(CI700, vmid_filtered, 0x06),
|
|
CMN_EVENT_DVM(CI700, rndop_filtered, 0x07),
|
|
CMN_EVENT_DVM(CI700, retry, 0x08),
|
|
CMN_EVENT_DVM(CI700, txsnp_flitv, 0x09),
|
|
CMN_EVENT_DVM(CI700, txsnp_stall, 0x0a),
|
|
CMN_EVENT_DVM(CI700, trkfull, 0x0b),
|
|
_CMN_EVENT_DVM(CI700, trk_occupancy_all, 0x0c, 0),
|
|
_CMN_EVENT_DVM(CI700, trk_occupancy_dvmop, 0x0c, 1),
|
|
_CMN_EVENT_DVM(CI700, trk_occupancy_dvmsync, 0x0c, 2),
|
|
|
|
CMN_EVENT_HNF(CMN_ANY, cache_miss, 0x01),
|
|
CMN_EVENT_HNF(CMN_ANY, slc_sf_cache_access, 0x02),
|
|
CMN_EVENT_HNF(CMN_ANY, cache_fill, 0x03),
|
|
CMN_EVENT_HNF(CMN_ANY, pocq_retry, 0x04),
|
|
CMN_EVENT_HNF(CMN_ANY, pocq_reqs_recvd, 0x05),
|
|
CMN_EVENT_HNF(CMN_ANY, sf_hit, 0x06),
|
|
CMN_EVENT_HNF(CMN_ANY, sf_evictions, 0x07),
|
|
CMN_EVENT_HNF(CMN_ANY, dir_snoops_sent, 0x08),
|
|
CMN_EVENT_HNF(CMN_ANY, brd_snoops_sent, 0x09),
|
|
CMN_EVENT_HNF(CMN_ANY, slc_eviction, 0x0a),
|
|
CMN_EVENT_HNF(CMN_ANY, slc_fill_invalid_way, 0x0b),
|
|
CMN_EVENT_HNF(CMN_ANY, mc_retries, 0x0c),
|
|
CMN_EVENT_HNF(CMN_ANY, mc_reqs, 0x0d),
|
|
CMN_EVENT_HNF(CMN_ANY, qos_hh_retry, 0x0e),
|
|
_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_all, 0x0f, 0),
|
|
_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_read, 0x0f, 1),
|
|
_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_write, 0x0f, 2),
|
|
_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_atomic, 0x0f, 3),
|
|
_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_stash, 0x0f, 4),
|
|
CMN_EVENT_HNF(CMN_ANY, pocq_addrhaz, 0x10),
|
|
CMN_EVENT_HNF(CMN_ANY, pocq_atomic_addrhaz, 0x11),
|
|
CMN_EVENT_HNF(CMN_ANY, ld_st_swp_adq_full, 0x12),
|
|
CMN_EVENT_HNF(CMN_ANY, cmp_adq_full, 0x13),
|
|
CMN_EVENT_HNF(CMN_ANY, txdat_stall, 0x14),
|
|
CMN_EVENT_HNF(CMN_ANY, txrsp_stall, 0x15),
|
|
CMN_EVENT_HNF(CMN_ANY, seq_full, 0x16),
|
|
CMN_EVENT_HNF(CMN_ANY, seq_hit, 0x17),
|
|
CMN_EVENT_HNF(CMN_ANY, snp_sent, 0x18),
|
|
CMN_EVENT_HNF(CMN_ANY, sfbi_dir_snp_sent, 0x19),
|
|
CMN_EVENT_HNF(CMN_ANY, sfbi_brd_snp_sent, 0x1a),
|
|
CMN_EVENT_HNF(CMN_ANY, snp_sent_untrk, 0x1b),
|
|
CMN_EVENT_HNF(CMN_ANY, intv_dirty, 0x1c),
|
|
CMN_EVENT_HNF(CMN_ANY, stash_snp_sent, 0x1d),
|
|
CMN_EVENT_HNF(CMN_ANY, stash_data_pull, 0x1e),
|
|
CMN_EVENT_HNF(CMN_ANY, snp_fwded, 0x1f),
|
|
CMN_EVENT_HNF(CI700, atomic_fwd, 0x20),
|
|
CMN_EVENT_HNF(CI700, mpam_hardlim, 0x21),
|
|
CMN_EVENT_HNF(CI700, mpam_softlim, 0x22),
|
|
|
|
CMN_EVENT_HNI(rrt_rd_occ_cnt_ovfl, 0x20),
|
|
CMN_EVENT_HNI(rrt_wr_occ_cnt_ovfl, 0x21),
|
|
CMN_EVENT_HNI(rdt_rd_occ_cnt_ovfl, 0x22),
|
|
CMN_EVENT_HNI(rdt_wr_occ_cnt_ovfl, 0x23),
|
|
CMN_EVENT_HNI(wdb_occ_cnt_ovfl, 0x24),
|
|
CMN_EVENT_HNI(rrt_rd_alloc, 0x25),
|
|
CMN_EVENT_HNI(rrt_wr_alloc, 0x26),
|
|
CMN_EVENT_HNI(rdt_rd_alloc, 0x27),
|
|
CMN_EVENT_HNI(rdt_wr_alloc, 0x28),
|
|
CMN_EVENT_HNI(wdb_alloc, 0x29),
|
|
CMN_EVENT_HNI(txrsp_retryack, 0x2a),
|
|
CMN_EVENT_HNI(arvalid_no_arready, 0x2b),
|
|
CMN_EVENT_HNI(arready_no_arvalid, 0x2c),
|
|
CMN_EVENT_HNI(awvalid_no_awready, 0x2d),
|
|
CMN_EVENT_HNI(awready_no_awvalid, 0x2e),
|
|
CMN_EVENT_HNI(wvalid_no_wready, 0x2f),
|
|
CMN_EVENT_HNI(txdat_stall, 0x30),
|
|
CMN_EVENT_HNI(nonpcie_serialization, 0x31),
|
|
CMN_EVENT_HNI(pcie_serialization, 0x32),
|
|
|
|
CMN_EVENT_XP(txflit_valid, 0x01),
|
|
CMN_EVENT_XP(txflit_stall, 0x02),
|
|
CMN_EVENT_XP(partial_dat_flit, 0x03),
|
|
/* We treat watchpoints as a special made-up class of XP events */
|
|
CMN_EVENT_ATTR(CMN_ANY, watchpoint_up, CMN_TYPE_WP, CMN_WP_UP, 0),
|
|
CMN_EVENT_ATTR(CMN_ANY, watchpoint_down, CMN_TYPE_WP, CMN_WP_DOWN, 0),
|
|
|
|
CMN_EVENT_SBSX(CMN_ANY, rd_req, 0x01),
|
|
CMN_EVENT_SBSX(CMN_ANY, wr_req, 0x02),
|
|
CMN_EVENT_SBSX(CMN_ANY, cmo_req, 0x03),
|
|
CMN_EVENT_SBSX(CMN_ANY, txrsp_retryack, 0x04),
|
|
CMN_EVENT_SBSX(CMN_ANY, txdat_flitv, 0x05),
|
|
CMN_EVENT_SBSX(CMN_ANY, txrsp_flitv, 0x06),
|
|
CMN_EVENT_SBSX(CMN_ANY, rd_req_trkr_occ_cnt_ovfl, 0x11),
|
|
CMN_EVENT_SBSX(CMN_ANY, wr_req_trkr_occ_cnt_ovfl, 0x12),
|
|
CMN_EVENT_SBSX(CMN_ANY, cmo_req_trkr_occ_cnt_ovfl, 0x13),
|
|
CMN_EVENT_SBSX(CMN_ANY, wdb_occ_cnt_ovfl, 0x14),
|
|
CMN_EVENT_SBSX(CMN_ANY, rd_axi_trkr_occ_cnt_ovfl, 0x15),
|
|
CMN_EVENT_SBSX(CMN_ANY, cmo_axi_trkr_occ_cnt_ovfl, 0x16),
|
|
CMN_EVENT_SBSX(CI700, rdb_occ_cnt_ovfl, 0x17),
|
|
CMN_EVENT_SBSX(CMN_ANY, arvalid_no_arready, 0x21),
|
|
CMN_EVENT_SBSX(CMN_ANY, awvalid_no_awready, 0x22),
|
|
CMN_EVENT_SBSX(CMN_ANY, wvalid_no_wready, 0x23),
|
|
CMN_EVENT_SBSX(CMN_ANY, txdat_stall, 0x24),
|
|
CMN_EVENT_SBSX(CMN_ANY, txrsp_stall, 0x25),
|
|
|
|
CMN_EVENT_RNID(CMN_ANY, s0_rdata_beats, 0x01),
|
|
CMN_EVENT_RNID(CMN_ANY, s1_rdata_beats, 0x02),
|
|
CMN_EVENT_RNID(CMN_ANY, s2_rdata_beats, 0x03),
|
|
CMN_EVENT_RNID(CMN_ANY, rxdat_flits, 0x04),
|
|
CMN_EVENT_RNID(CMN_ANY, txdat_flits, 0x05),
|
|
CMN_EVENT_RNID(CMN_ANY, txreq_flits_total, 0x06),
|
|
CMN_EVENT_RNID(CMN_ANY, txreq_flits_retried, 0x07),
|
|
CMN_EVENT_RNID(CMN_ANY, rrt_occ_ovfl, 0x08),
|
|
CMN_EVENT_RNID(CMN_ANY, wrt_occ_ovfl, 0x09),
|
|
CMN_EVENT_RNID(CMN_ANY, txreq_flits_replayed, 0x0a),
|
|
CMN_EVENT_RNID(CMN_ANY, wrcancel_sent, 0x0b),
|
|
CMN_EVENT_RNID(CMN_ANY, s0_wdata_beats, 0x0c),
|
|
CMN_EVENT_RNID(CMN_ANY, s1_wdata_beats, 0x0d),
|
|
CMN_EVENT_RNID(CMN_ANY, s2_wdata_beats, 0x0e),
|
|
CMN_EVENT_RNID(CMN_ANY, rrt_alloc, 0x0f),
|
|
CMN_EVENT_RNID(CMN_ANY, wrt_alloc, 0x10),
|
|
CMN_EVENT_RNID(CMN600, rdb_unord, 0x11),
|
|
CMN_EVENT_RNID(CMN600, rdb_replay, 0x12),
|
|
CMN_EVENT_RNID(CMN600, rdb_hybrid, 0x13),
|
|
CMN_EVENT_RNID(CMN600, rdb_ord, 0x14),
|
|
CMN_EVENT_RNID(CI700, padb_occ_ovfl, 0x11),
|
|
CMN_EVENT_RNID(CI700, rpdb_occ_ovfl, 0x12),
|
|
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice1, 0x13),
|
|
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice2, 0x14),
|
|
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice3, 0x15),
|
|
CMN_EVENT_RNID(CI700, wrt_throttled, 0x16),
|
|
|
|
CMN_EVENT_MTSX(tc_lookup, 0x01),
|
|
CMN_EVENT_MTSX(tc_fill, 0x02),
|
|
CMN_EVENT_MTSX(tc_miss, 0x03),
|
|
CMN_EVENT_MTSX(tdb_forward, 0x04),
|
|
CMN_EVENT_MTSX(tcq_hazard, 0x05),
|
|
CMN_EVENT_MTSX(tcq_rd_alloc, 0x06),
|
|
CMN_EVENT_MTSX(tcq_wr_alloc, 0x07),
|
|
CMN_EVENT_MTSX(tcq_cmo_alloc, 0x08),
|
|
CMN_EVENT_MTSX(axi_rd_req, 0x09),
|
|
CMN_EVENT_MTSX(axi_wr_req, 0x0a),
|
|
CMN_EVENT_MTSX(tcq_occ_cnt_ovfl, 0x0b),
|
|
CMN_EVENT_MTSX(tdb_occ_cnt_ovfl, 0x0c),
|
|
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group arm_cmn_event_attrs_group = {
|
|
.name = "events",
|
|
.attrs = arm_cmn_event_attrs,
|
|
.is_visible = arm_cmn_event_attr_is_visible,
|
|
};
|
|
|
|
static ssize_t arm_cmn_format_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct arm_cmn_format_attr *fmt = container_of(attr, typeof(*fmt), attr);
|
|
int lo = __ffs(fmt->field), hi = __fls(fmt->field);
|
|
|
|
if (lo == hi)
|
|
return sysfs_emit(buf, "config:%d\n", lo);
|
|
|
|
if (!fmt->config)
|
|
return sysfs_emit(buf, "config:%d-%d\n", lo, hi);
|
|
|
|
return sysfs_emit(buf, "config%d:%d-%d\n", fmt->config, lo, hi);
|
|
}
|
|
|
|
#define _CMN_FORMAT_ATTR(_name, _cfg, _fld) \
|
|
(&((struct arm_cmn_format_attr[]) {{ \
|
|
.attr = __ATTR(_name, 0444, arm_cmn_format_show, NULL), \
|
|
.config = _cfg, \
|
|
.field = _fld, \
|
|
}})[0].attr.attr)
|
|
#define CMN_FORMAT_ATTR(_name, _fld) _CMN_FORMAT_ATTR(_name, 0, _fld)
|
|
|
|
static struct attribute *arm_cmn_format_attrs[] = {
|
|
CMN_FORMAT_ATTR(type, CMN_CONFIG_TYPE),
|
|
CMN_FORMAT_ATTR(eventid, CMN_CONFIG_EVENTID),
|
|
CMN_FORMAT_ATTR(occupid, CMN_CONFIG_OCCUPID),
|
|
CMN_FORMAT_ATTR(bynodeid, CMN_CONFIG_BYNODEID),
|
|
CMN_FORMAT_ATTR(nodeid, CMN_CONFIG_NODEID),
|
|
|
|
CMN_FORMAT_ATTR(wp_dev_sel, CMN_CONFIG_WP_DEV_SEL),
|
|
CMN_FORMAT_ATTR(wp_chn_sel, CMN_CONFIG_WP_CHN_SEL),
|
|
CMN_FORMAT_ATTR(wp_grp, CMN_CONFIG_WP_GRP),
|
|
CMN_FORMAT_ATTR(wp_exclusive, CMN_CONFIG_WP_EXCLUSIVE),
|
|
CMN_FORMAT_ATTR(wp_combine, CMN_CONFIG_WP_COMBINE),
|
|
|
|
_CMN_FORMAT_ATTR(wp_val, 1, CMN_CONFIG1_WP_VAL),
|
|
_CMN_FORMAT_ATTR(wp_mask, 2, CMN_CONFIG2_WP_MASK),
|
|
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group arm_cmn_format_attrs_group = {
|
|
.name = "format",
|
|
.attrs = arm_cmn_format_attrs,
|
|
};
|
|
|
|
static ssize_t arm_cmn_cpumask_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
|
|
|
|
return cpumap_print_to_pagebuf(true, buf, cpumask_of(cmn->cpu));
|
|
}
|
|
|
|
static struct device_attribute arm_cmn_cpumask_attr =
|
|
__ATTR(cpumask, 0444, arm_cmn_cpumask_show, NULL);
|
|
|
|
static struct attribute *arm_cmn_cpumask_attrs[] = {
|
|
&arm_cmn_cpumask_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group arm_cmn_cpumask_attr_group = {
|
|
.attrs = arm_cmn_cpumask_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *arm_cmn_attr_groups[] = {
|
|
&arm_cmn_event_attrs_group,
|
|
&arm_cmn_format_attrs_group,
|
|
&arm_cmn_cpumask_attr_group,
|
|
NULL
|
|
};
|
|
|
|
static int arm_cmn_wp_idx(struct perf_event *event)
|
|
{
|
|
return CMN_EVENT_EVENTID(event) + CMN_EVENT_WP_GRP(event);
|
|
}
|
|
|
|
static u32 arm_cmn_wp_config(struct perf_event *event)
|
|
{
|
|
u32 config;
|
|
u32 dev = CMN_EVENT_WP_DEV_SEL(event);
|
|
u32 chn = CMN_EVENT_WP_CHN_SEL(event);
|
|
u32 grp = CMN_EVENT_WP_GRP(event);
|
|
u32 exc = CMN_EVENT_WP_EXCLUSIVE(event);
|
|
u32 combine = CMN_EVENT_WP_COMBINE(event);
|
|
|
|
config = FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_DEV_SEL, dev) |
|
|
FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_CHN_SEL, chn) |
|
|
FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_GRP, grp) |
|
|
FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_EXCLUSIVE, exc) |
|
|
FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_DEV_SEL2, dev >> 1);
|
|
if (combine && !grp)
|
|
config |= CMN_DTM_WPn_CONFIG_WP_COMBINE;
|
|
|
|
return config;
|
|
}
|
|
|
|
static void arm_cmn_set_state(struct arm_cmn *cmn, u32 state)
|
|
{
|
|
if (!cmn->state)
|
|
writel_relaxed(0, cmn->dtc[0].base + CMN_DT_PMCR);
|
|
cmn->state |= state;
|
|
}
|
|
|
|
static void arm_cmn_clear_state(struct arm_cmn *cmn, u32 state)
|
|
{
|
|
cmn->state &= ~state;
|
|
if (!cmn->state)
|
|
writel_relaxed(CMN_DT_PMCR_PMU_EN | CMN_DT_PMCR_OVFL_INTR_EN,
|
|
cmn->dtc[0].base + CMN_DT_PMCR);
|
|
}
|
|
|
|
static void arm_cmn_pmu_enable(struct pmu *pmu)
|
|
{
|
|
arm_cmn_clear_state(to_cmn(pmu), CMN_STATE_DISABLED);
|
|
}
|
|
|
|
static void arm_cmn_pmu_disable(struct pmu *pmu)
|
|
{
|
|
arm_cmn_set_state(to_cmn(pmu), CMN_STATE_DISABLED);
|
|
}
|
|
|
|
static u64 arm_cmn_read_dtm(struct arm_cmn *cmn, struct arm_cmn_hw_event *hw,
|
|
bool snapshot)
|
|
{
|
|
struct arm_cmn_dtm *dtm = NULL;
|
|
struct arm_cmn_node *dn;
|
|
unsigned int i, offset, dtm_idx;
|
|
u64 reg, count = 0;
|
|
|
|
offset = snapshot ? CMN_DTM_PMEVCNTSR : CMN_DTM_PMEVCNT;
|
|
for_each_hw_dn(hw, dn, i) {
|
|
if (dtm != &cmn->dtms[dn->dtm]) {
|
|
dtm = &cmn->dtms[dn->dtm] + hw->dtm_offset;
|
|
reg = readq_relaxed(dtm->base + offset);
|
|
}
|
|
dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
|
|
count += (u16)(reg >> (dtm_idx * 16));
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static u64 arm_cmn_read_cc(struct arm_cmn_dtc *dtc)
|
|
{
|
|
u64 val = readq_relaxed(dtc->base + CMN_DT_PMCCNTR);
|
|
|
|
writeq_relaxed(CMN_CC_INIT, dtc->base + CMN_DT_PMCCNTR);
|
|
return (val - CMN_CC_INIT) & ((CMN_CC_INIT << 1) - 1);
|
|
}
|
|
|
|
static u32 arm_cmn_read_counter(struct arm_cmn_dtc *dtc, int idx)
|
|
{
|
|
u32 val, pmevcnt = CMN_DT_PMEVCNT(idx);
|
|
|
|
val = readl_relaxed(dtc->base + pmevcnt);
|
|
writel_relaxed(CMN_COUNTER_INIT, dtc->base + pmevcnt);
|
|
return val - CMN_COUNTER_INIT;
|
|
}
|
|
|
|
static void arm_cmn_init_counter(struct perf_event *event)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
unsigned int i, pmevcnt = CMN_DT_PMEVCNT(hw->dtc_idx);
|
|
u64 count;
|
|
|
|
for (i = 0; hw->dtcs_used & (1U << i); i++) {
|
|
writel_relaxed(CMN_COUNTER_INIT, cmn->dtc[i].base + pmevcnt);
|
|
cmn->dtc[i].counters[hw->dtc_idx] = event;
|
|
}
|
|
|
|
count = arm_cmn_read_dtm(cmn, hw, false);
|
|
local64_set(&event->hw.prev_count, count);
|
|
}
|
|
|
|
static void arm_cmn_event_read(struct perf_event *event)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
u64 delta, new, prev;
|
|
unsigned long flags;
|
|
unsigned int i;
|
|
|
|
if (hw->dtc_idx == CMN_DT_NUM_COUNTERS) {
|
|
i = __ffs(hw->dtcs_used);
|
|
delta = arm_cmn_read_cc(cmn->dtc + i);
|
|
local64_add(delta, &event->count);
|
|
return;
|
|
}
|
|
new = arm_cmn_read_dtm(cmn, hw, false);
|
|
prev = local64_xchg(&event->hw.prev_count, new);
|
|
|
|
delta = new - prev;
|
|
|
|
local_irq_save(flags);
|
|
for (i = 0; hw->dtcs_used & (1U << i); i++) {
|
|
new = arm_cmn_read_counter(cmn->dtc + i, hw->dtc_idx);
|
|
delta += new << 16;
|
|
}
|
|
local_irq_restore(flags);
|
|
local64_add(delta, &event->count);
|
|
}
|
|
|
|
static void arm_cmn_event_start(struct perf_event *event, int flags)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_node *dn;
|
|
enum cmn_node_type type = CMN_EVENT_TYPE(event);
|
|
int i;
|
|
|
|
if (type == CMN_TYPE_DTC) {
|
|
i = __ffs(hw->dtcs_used);
|
|
writeq_relaxed(CMN_CC_INIT, cmn->dtc[i].base + CMN_DT_PMCCNTR);
|
|
cmn->dtc[i].cc_active = true;
|
|
} else if (type == CMN_TYPE_WP) {
|
|
int wp_idx = arm_cmn_wp_idx(event);
|
|
u64 val = CMN_EVENT_WP_VAL(event);
|
|
u64 mask = CMN_EVENT_WP_MASK(event);
|
|
|
|
for_each_hw_dn(hw, dn, i) {
|
|
void __iomem *base = dn->pmu_base + CMN_DTM_OFFSET(hw->dtm_offset);
|
|
|
|
writeq_relaxed(val, base + CMN_DTM_WPn_VAL(wp_idx));
|
|
writeq_relaxed(mask, base + CMN_DTM_WPn_MASK(wp_idx));
|
|
}
|
|
} else for_each_hw_dn(hw, dn, i) {
|
|
int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
|
|
|
|
dn->event[dtm_idx] = CMN_EVENT_EVENTID(event);
|
|
writel_relaxed(le32_to_cpu(dn->event_sel), dn->pmu_base + CMN_PMU_EVENT_SEL);
|
|
}
|
|
}
|
|
|
|
static void arm_cmn_event_stop(struct perf_event *event, int flags)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_node *dn;
|
|
enum cmn_node_type type = CMN_EVENT_TYPE(event);
|
|
int i;
|
|
|
|
if (type == CMN_TYPE_DTC) {
|
|
i = __ffs(hw->dtcs_used);
|
|
cmn->dtc[i].cc_active = false;
|
|
} else if (type == CMN_TYPE_WP) {
|
|
int wp_idx = arm_cmn_wp_idx(event);
|
|
|
|
for_each_hw_dn(hw, dn, i) {
|
|
void __iomem *base = dn->pmu_base + CMN_DTM_OFFSET(hw->dtm_offset);
|
|
|
|
writeq_relaxed(0, base + CMN_DTM_WPn_MASK(wp_idx));
|
|
writeq_relaxed(~0ULL, base + CMN_DTM_WPn_VAL(wp_idx));
|
|
}
|
|
} else for_each_hw_dn(hw, dn, i) {
|
|
int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
|
|
|
|
dn->event[dtm_idx] = 0;
|
|
writel_relaxed(le32_to_cpu(dn->event_sel), dn->pmu_base + CMN_PMU_EVENT_SEL);
|
|
}
|
|
|
|
arm_cmn_event_read(event);
|
|
}
|
|
|
|
struct arm_cmn_val {
|
|
u8 dtm_count[CMN_MAX_DTMS];
|
|
u8 occupid[CMN_MAX_DTMS];
|
|
u8 wp[CMN_MAX_DTMS][4];
|
|
int dtc_count;
|
|
bool cycles;
|
|
};
|
|
|
|
static void arm_cmn_val_add_event(struct arm_cmn *cmn, struct arm_cmn_val *val,
|
|
struct perf_event *event)
|
|
{
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_node *dn;
|
|
enum cmn_node_type type;
|
|
int i;
|
|
u8 occupid;
|
|
|
|
if (is_software_event(event))
|
|
return;
|
|
|
|
type = CMN_EVENT_TYPE(event);
|
|
if (type == CMN_TYPE_DTC) {
|
|
val->cycles = true;
|
|
return;
|
|
}
|
|
|
|
val->dtc_count++;
|
|
if (arm_cmn_is_occup_event(cmn->model, type, CMN_EVENT_EVENTID(event)))
|
|
occupid = CMN_EVENT_OCCUPID(event) + 1;
|
|
else
|
|
occupid = 0;
|
|
|
|
for_each_hw_dn(hw, dn, i) {
|
|
int wp_idx, dtm = dn->dtm;
|
|
|
|
val->dtm_count[dtm]++;
|
|
val->occupid[dtm] = occupid;
|
|
|
|
if (type != CMN_TYPE_WP)
|
|
continue;
|
|
|
|
wp_idx = arm_cmn_wp_idx(event);
|
|
val->wp[dtm][wp_idx] = CMN_EVENT_WP_COMBINE(event) + 1;
|
|
}
|
|
}
|
|
|
|
static int arm_cmn_validate_group(struct arm_cmn *cmn, struct perf_event *event)
|
|
{
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_node *dn;
|
|
struct perf_event *sibling, *leader = event->group_leader;
|
|
enum cmn_node_type type;
|
|
struct arm_cmn_val *val;
|
|
int i, ret = -EINVAL;
|
|
u8 occupid;
|
|
|
|
if (leader == event)
|
|
return 0;
|
|
|
|
if (event->pmu != leader->pmu && !is_software_event(leader))
|
|
return -EINVAL;
|
|
|
|
val = kzalloc(sizeof(*val), GFP_KERNEL);
|
|
if (!val)
|
|
return -ENOMEM;
|
|
|
|
arm_cmn_val_add_event(cmn, val, leader);
|
|
for_each_sibling_event(sibling, leader)
|
|
arm_cmn_val_add_event(cmn, val, sibling);
|
|
|
|
type = CMN_EVENT_TYPE(event);
|
|
if (type == CMN_TYPE_DTC) {
|
|
ret = val->cycles ? -EINVAL : 0;
|
|
goto done;
|
|
}
|
|
|
|
if (val->dtc_count == CMN_DT_NUM_COUNTERS)
|
|
goto done;
|
|
|
|
if (arm_cmn_is_occup_event(cmn->model, type, CMN_EVENT_EVENTID(event)))
|
|
occupid = CMN_EVENT_OCCUPID(event) + 1;
|
|
else
|
|
occupid = 0;
|
|
|
|
for_each_hw_dn(hw, dn, i) {
|
|
int wp_idx, wp_cmb, dtm = dn->dtm;
|
|
|
|
if (val->dtm_count[dtm] == CMN_DTM_NUM_COUNTERS)
|
|
goto done;
|
|
|
|
if (occupid && val->occupid[dtm] && occupid != val->occupid[dtm])
|
|
goto done;
|
|
|
|
if (type != CMN_TYPE_WP)
|
|
continue;
|
|
|
|
wp_idx = arm_cmn_wp_idx(event);
|
|
if (val->wp[dtm][wp_idx])
|
|
goto done;
|
|
|
|
wp_cmb = val->wp[dtm][wp_idx ^ 1];
|
|
if (wp_cmb && wp_cmb != CMN_EVENT_WP_COMBINE(event) + 1)
|
|
goto done;
|
|
}
|
|
|
|
ret = 0;
|
|
done:
|
|
kfree(val);
|
|
return ret;
|
|
}
|
|
|
|
static int arm_cmn_event_init(struct perf_event *event)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_node *dn;
|
|
enum cmn_node_type type;
|
|
bool bynodeid;
|
|
u16 nodeid, eventid;
|
|
|
|
if (event->attr.type != event->pmu->type)
|
|
return -ENOENT;
|
|
|
|
if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
|
|
return -EINVAL;
|
|
|
|
event->cpu = cmn->cpu;
|
|
if (event->cpu < 0)
|
|
return -EINVAL;
|
|
|
|
type = CMN_EVENT_TYPE(event);
|
|
/* DTC events (i.e. cycles) already have everything they need */
|
|
if (type == CMN_TYPE_DTC)
|
|
return 0;
|
|
|
|
/* For watchpoints we need the actual XP node here */
|
|
if (type == CMN_TYPE_WP) {
|
|
type = CMN_TYPE_XP;
|
|
/* ...and we need a "real" direction */
|
|
eventid = CMN_EVENT_EVENTID(event);
|
|
if (eventid != CMN_WP_UP && eventid != CMN_WP_DOWN)
|
|
return -EINVAL;
|
|
/* ...but the DTM may depend on which port we're watching */
|
|
if (cmn->multi_dtm)
|
|
hw->dtm_offset = CMN_EVENT_WP_DEV_SEL(event) / 2;
|
|
}
|
|
|
|
bynodeid = CMN_EVENT_BYNODEID(event);
|
|
nodeid = CMN_EVENT_NODEID(event);
|
|
|
|
hw->dn = arm_cmn_node(cmn, type);
|
|
if (!hw->dn)
|
|
return -EINVAL;
|
|
for (dn = hw->dn; dn->type == type; dn++) {
|
|
if (bynodeid && dn->id != nodeid) {
|
|
hw->dn++;
|
|
continue;
|
|
}
|
|
hw->dtcs_used |= arm_cmn_node_to_xp(cmn, dn)->dtc;
|
|
hw->num_dns++;
|
|
if (bynodeid)
|
|
break;
|
|
}
|
|
|
|
if (!hw->num_dns) {
|
|
struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, nodeid);
|
|
|
|
dev_dbg(cmn->dev, "invalid node 0x%x (%d,%d,%d,%d) type 0x%x\n",
|
|
nodeid, nid.x, nid.y, nid.port, nid.dev, type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return arm_cmn_validate_group(cmn, event);
|
|
}
|
|
|
|
static void arm_cmn_event_clear(struct arm_cmn *cmn, struct perf_event *event,
|
|
int i)
|
|
{
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
enum cmn_node_type type = CMN_EVENT_TYPE(event);
|
|
|
|
while (i--) {
|
|
struct arm_cmn_dtm *dtm = &cmn->dtms[hw->dn[i].dtm] + hw->dtm_offset;
|
|
unsigned int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
|
|
|
|
if (type == CMN_TYPE_WP)
|
|
dtm->wp_event[arm_cmn_wp_idx(event)] = -1;
|
|
|
|
if (arm_cmn_is_occup_event(cmn->model, type, CMN_EVENT_EVENTID(event)))
|
|
hw->dn[i].occupid_count--;
|
|
|
|
dtm->pmu_config_low &= ~CMN__PMEVCNT_PAIRED(dtm_idx);
|
|
writel_relaxed(dtm->pmu_config_low, dtm->base + CMN_DTM_PMU_CONFIG);
|
|
}
|
|
memset(hw->dtm_idx, 0, sizeof(hw->dtm_idx));
|
|
|
|
for (i = 0; hw->dtcs_used & (1U << i); i++)
|
|
cmn->dtc[i].counters[hw->dtc_idx] = NULL;
|
|
}
|
|
|
|
static int arm_cmn_event_add(struct perf_event *event, int flags)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
struct arm_cmn_dtc *dtc = &cmn->dtc[0];
|
|
struct arm_cmn_node *dn;
|
|
enum cmn_node_type type = CMN_EVENT_TYPE(event);
|
|
unsigned int i, dtc_idx, input_sel;
|
|
|
|
if (type == CMN_TYPE_DTC) {
|
|
i = 0;
|
|
while (cmn->dtc[i].cycles)
|
|
if (++i == cmn->num_dtcs)
|
|
return -ENOSPC;
|
|
|
|
cmn->dtc[i].cycles = event;
|
|
hw->dtc_idx = CMN_DT_NUM_COUNTERS;
|
|
hw->dtcs_used = 1U << i;
|
|
|
|
if (flags & PERF_EF_START)
|
|
arm_cmn_event_start(event, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Grab a free global counter first... */
|
|
dtc_idx = 0;
|
|
while (dtc->counters[dtc_idx])
|
|
if (++dtc_idx == CMN_DT_NUM_COUNTERS)
|
|
return -ENOSPC;
|
|
|
|
hw->dtc_idx = dtc_idx;
|
|
|
|
/* ...then the local counters to feed it. */
|
|
for_each_hw_dn(hw, dn, i) {
|
|
struct arm_cmn_dtm *dtm = &cmn->dtms[dn->dtm] + hw->dtm_offset;
|
|
unsigned int dtm_idx, shift;
|
|
u64 reg;
|
|
|
|
dtm_idx = 0;
|
|
while (dtm->pmu_config_low & CMN__PMEVCNT_PAIRED(dtm_idx))
|
|
if (++dtm_idx == CMN_DTM_NUM_COUNTERS)
|
|
goto free_dtms;
|
|
|
|
if (type == CMN_TYPE_XP) {
|
|
input_sel = CMN__PMEVCNT0_INPUT_SEL_XP + dtm_idx;
|
|
} else if (type == CMN_TYPE_WP) {
|
|
int tmp, wp_idx = arm_cmn_wp_idx(event);
|
|
u32 cfg = arm_cmn_wp_config(event);
|
|
|
|
if (dtm->wp_event[wp_idx] >= 0)
|
|
goto free_dtms;
|
|
|
|
tmp = dtm->wp_event[wp_idx ^ 1];
|
|
if (tmp >= 0 && CMN_EVENT_WP_COMBINE(event) !=
|
|
CMN_EVENT_WP_COMBINE(dtc->counters[tmp]))
|
|
goto free_dtms;
|
|
|
|
input_sel = CMN__PMEVCNT0_INPUT_SEL_WP + wp_idx;
|
|
dtm->wp_event[wp_idx] = dtc_idx;
|
|
writel_relaxed(cfg, dtm->base + CMN_DTM_WPn_CONFIG(wp_idx));
|
|
} else {
|
|
struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
|
|
|
|
if (cmn->multi_dtm)
|
|
nid.port %= 2;
|
|
|
|
input_sel = CMN__PMEVCNT0_INPUT_SEL_DEV + dtm_idx +
|
|
(nid.port << 4) + (nid.dev << 2);
|
|
|
|
if (arm_cmn_is_occup_event(cmn->model, type, CMN_EVENT_EVENTID(event))) {
|
|
u8 occupid = CMN_EVENT_OCCUPID(event);
|
|
|
|
if (dn->occupid_count == 0) {
|
|
dn->occupid_val = occupid;
|
|
writel_relaxed(occupid,
|
|
dn->pmu_base + CMN_PMU_EVENT_SEL + 4);
|
|
} else if (dn->occupid_val != occupid) {
|
|
goto free_dtms;
|
|
}
|
|
dn->occupid_count++;
|
|
}
|
|
}
|
|
|
|
arm_cmn_set_index(hw->dtm_idx, i, dtm_idx);
|
|
|
|
dtm->input_sel[dtm_idx] = input_sel;
|
|
shift = CMN__PMEVCNTn_GLOBAL_NUM_SHIFT(dtm_idx);
|
|
dtm->pmu_config_low &= ~(CMN__PMEVCNT0_GLOBAL_NUM << shift);
|
|
dtm->pmu_config_low |= FIELD_PREP(CMN__PMEVCNT0_GLOBAL_NUM, dtc_idx) << shift;
|
|
dtm->pmu_config_low |= CMN__PMEVCNT_PAIRED(dtm_idx);
|
|
reg = (u64)le32_to_cpu(dtm->pmu_config_high) << 32 | dtm->pmu_config_low;
|
|
writeq_relaxed(reg, dtm->base + CMN_DTM_PMU_CONFIG);
|
|
}
|
|
|
|
/* Go go go! */
|
|
arm_cmn_init_counter(event);
|
|
|
|
if (flags & PERF_EF_START)
|
|
arm_cmn_event_start(event, 0);
|
|
|
|
return 0;
|
|
|
|
free_dtms:
|
|
arm_cmn_event_clear(cmn, event, i);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
static void arm_cmn_event_del(struct perf_event *event, int flags)
|
|
{
|
|
struct arm_cmn *cmn = to_cmn(event->pmu);
|
|
struct arm_cmn_hw_event *hw = to_cmn_hw(event);
|
|
enum cmn_node_type type = CMN_EVENT_TYPE(event);
|
|
|
|
arm_cmn_event_stop(event, PERF_EF_UPDATE);
|
|
|
|
if (type == CMN_TYPE_DTC)
|
|
cmn->dtc[__ffs(hw->dtcs_used)].cycles = NULL;
|
|
else
|
|
arm_cmn_event_clear(cmn, event, hw->num_dns);
|
|
}
|
|
|
|
/*
|
|
* We stop the PMU for both add and read, to avoid skew across DTM counters.
|
|
* In theory we could use snapshots to read without stopping, but then it
|
|
* becomes a lot trickier to deal with overlow and racing against interrupts,
|
|
* plus it seems they don't work properly on some hardware anyway :(
|
|
*/
|
|
static void arm_cmn_start_txn(struct pmu *pmu, unsigned int flags)
|
|
{
|
|
arm_cmn_set_state(to_cmn(pmu), CMN_STATE_TXN);
|
|
}
|
|
|
|
static void arm_cmn_end_txn(struct pmu *pmu)
|
|
{
|
|
arm_cmn_clear_state(to_cmn(pmu), CMN_STATE_TXN);
|
|
}
|
|
|
|
static int arm_cmn_commit_txn(struct pmu *pmu)
|
|
{
|
|
arm_cmn_end_txn(pmu);
|
|
return 0;
|
|
}
|
|
|
|
static void arm_cmn_migrate(struct arm_cmn *cmn, unsigned int cpu)
|
|
{
|
|
unsigned int i;
|
|
|
|
perf_pmu_migrate_context(&cmn->pmu, cmn->cpu, cpu);
|
|
for (i = 0; i < cmn->num_dtcs; i++)
|
|
irq_set_affinity(cmn->dtc[i].irq, cpumask_of(cpu));
|
|
cmn->cpu = cpu;
|
|
}
|
|
|
|
static int arm_cmn_pmu_online_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
|
|
{
|
|
struct arm_cmn *cmn;
|
|
int node;
|
|
|
|
cmn = hlist_entry_safe(cpuhp_node, struct arm_cmn, cpuhp_node);
|
|
node = dev_to_node(cmn->dev);
|
|
if (node != NUMA_NO_NODE && cpu_to_node(cmn->cpu) != node && cpu_to_node(cpu) == node)
|
|
arm_cmn_migrate(cmn, cpu);
|
|
return 0;
|
|
}
|
|
|
|
static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
|
|
{
|
|
struct arm_cmn *cmn;
|
|
unsigned int target;
|
|
int node;
|
|
cpumask_t mask;
|
|
|
|
cmn = hlist_entry_safe(cpuhp_node, struct arm_cmn, cpuhp_node);
|
|
if (cpu != cmn->cpu)
|
|
return 0;
|
|
|
|
node = dev_to_node(cmn->dev);
|
|
if (cpumask_and(&mask, cpumask_of_node(node), cpu_online_mask) &&
|
|
cpumask_andnot(&mask, &mask, cpumask_of(cpu)))
|
|
target = cpumask_any(&mask);
|
|
else
|
|
target = cpumask_any_but(cpu_online_mask, cpu);
|
|
if (target < nr_cpu_ids)
|
|
arm_cmn_migrate(cmn, target);
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t arm_cmn_handle_irq(int irq, void *dev_id)
|
|
{
|
|
struct arm_cmn_dtc *dtc = dev_id;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
for (;;) {
|
|
u32 status = readl_relaxed(dtc->base + CMN_DT_PMOVSR);
|
|
u64 delta;
|
|
int i;
|
|
|
|
for (i = 0; i < CMN_DTM_NUM_COUNTERS; i++) {
|
|
if (status & (1U << i)) {
|
|
ret = IRQ_HANDLED;
|
|
if (WARN_ON(!dtc->counters[i]))
|
|
continue;
|
|
delta = (u64)arm_cmn_read_counter(dtc, i) << 16;
|
|
local64_add(delta, &dtc->counters[i]->count);
|
|
}
|
|
}
|
|
|
|
if (status & (1U << CMN_DT_NUM_COUNTERS)) {
|
|
ret = IRQ_HANDLED;
|
|
if (dtc->cc_active && !WARN_ON(!dtc->cycles)) {
|
|
delta = arm_cmn_read_cc(dtc);
|
|
local64_add(delta, &dtc->cycles->count);
|
|
}
|
|
}
|
|
|
|
writel_relaxed(status, dtc->base + CMN_DT_PMOVSR_CLR);
|
|
|
|
if (!dtc->irq_friend)
|
|
return ret;
|
|
dtc += dtc->irq_friend;
|
|
}
|
|
}
|
|
|
|
/* We can reasonably accommodate DTCs of the same CMN sharing IRQs */
|
|
static int arm_cmn_init_irqs(struct arm_cmn *cmn)
|
|
{
|
|
int i, j, irq, err;
|
|
|
|
for (i = 0; i < cmn->num_dtcs; i++) {
|
|
irq = cmn->dtc[i].irq;
|
|
for (j = i; j--; ) {
|
|
if (cmn->dtc[j].irq == irq) {
|
|
cmn->dtc[j].irq_friend = i - j;
|
|
goto next;
|
|
}
|
|
}
|
|
err = devm_request_irq(cmn->dev, irq, arm_cmn_handle_irq,
|
|
IRQF_NOBALANCING | IRQF_NO_THREAD,
|
|
dev_name(cmn->dev), &cmn->dtc[i]);
|
|
if (err)
|
|
return err;
|
|
|
|
err = irq_set_affinity(irq, cpumask_of(cmn->cpu));
|
|
if (err)
|
|
return err;
|
|
next:
|
|
; /* isn't C great? */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void arm_cmn_init_dtm(struct arm_cmn_dtm *dtm, struct arm_cmn_node *xp, int idx)
|
|
{
|
|
int i;
|
|
|
|
dtm->base = xp->pmu_base + CMN_DTM_OFFSET(idx);
|
|
dtm->pmu_config_low = CMN_DTM_PMU_CONFIG_PMU_EN;
|
|
for (i = 0; i < 4; i++) {
|
|
dtm->wp_event[i] = -1;
|
|
writeq_relaxed(0, dtm->base + CMN_DTM_WPn_MASK(i));
|
|
writeq_relaxed(~0ULL, dtm->base + CMN_DTM_WPn_VAL(i));
|
|
}
|
|
}
|
|
|
|
static int arm_cmn_init_dtc(struct arm_cmn *cmn, struct arm_cmn_node *dn, int idx)
|
|
{
|
|
struct arm_cmn_dtc *dtc = cmn->dtc + idx;
|
|
|
|
dtc->base = dn->pmu_base - CMN_PMU_OFFSET;
|
|
dtc->irq = platform_get_irq(to_platform_device(cmn->dev), idx);
|
|
if (dtc->irq < 0)
|
|
return dtc->irq;
|
|
|
|
writel_relaxed(0, dtc->base + CMN_DT_PMCR);
|
|
writel_relaxed(0x1ff, dtc->base + CMN_DT_PMOVSR_CLR);
|
|
writel_relaxed(CMN_DT_PMCR_OVFL_INTR_EN, dtc->base + CMN_DT_PMCR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int arm_cmn_node_cmp(const void *a, const void *b)
|
|
{
|
|
const struct arm_cmn_node *dna = a, *dnb = b;
|
|
int cmp;
|
|
|
|
cmp = dna->type - dnb->type;
|
|
if (!cmp)
|
|
cmp = dna->logid - dnb->logid;
|
|
return cmp;
|
|
}
|
|
|
|
static int arm_cmn_init_dtcs(struct arm_cmn *cmn)
|
|
{
|
|
struct arm_cmn_node *dn, *xp;
|
|
int dtc_idx = 0;
|
|
u8 dtcs_present = (1 << cmn->num_dtcs) - 1;
|
|
|
|
cmn->dtc = devm_kcalloc(cmn->dev, cmn->num_dtcs, sizeof(cmn->dtc[0]), GFP_KERNEL);
|
|
if (!cmn->dtc)
|
|
return -ENOMEM;
|
|
|
|
sort(cmn->dns, cmn->num_dns, sizeof(cmn->dns[0]), arm_cmn_node_cmp, NULL);
|
|
|
|
cmn->xps = arm_cmn_node(cmn, CMN_TYPE_XP);
|
|
|
|
for (dn = cmn->dns; dn->type; dn++) {
|
|
if (dn->type == CMN_TYPE_XP) {
|
|
dn->dtc &= dtcs_present;
|
|
continue;
|
|
}
|
|
|
|
xp = arm_cmn_node_to_xp(cmn, dn);
|
|
dn->dtm = xp->dtm;
|
|
if (cmn->multi_dtm)
|
|
dn->dtm += arm_cmn_nid(cmn, dn->id).port / 2;
|
|
|
|
if (dn->type == CMN_TYPE_DTC) {
|
|
int err;
|
|
/* We do at least know that a DTC's XP must be in that DTC's domain */
|
|
if (xp->dtc == 0xf)
|
|
xp->dtc = 1 << dtc_idx;
|
|
err = arm_cmn_init_dtc(cmn, dn, dtc_idx++);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/* To the PMU, RN-Ds don't add anything over RN-Is, so smoosh them together */
|
|
if (dn->type == CMN_TYPE_RND)
|
|
dn->type = CMN_TYPE_RNI;
|
|
}
|
|
|
|
writel_relaxed(CMN_DT_DTC_CTL_DT_EN, cmn->dtc[0].base + CMN_DT_DTC_CTL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void arm_cmn_init_node_info(struct arm_cmn *cmn, u32 offset, struct arm_cmn_node *node)
|
|
{
|
|
int level;
|
|
u64 reg = readq_relaxed(cmn->base + offset + CMN_NODE_INFO);
|
|
|
|
node->type = FIELD_GET(CMN_NI_NODE_TYPE, reg);
|
|
node->id = FIELD_GET(CMN_NI_NODE_ID, reg);
|
|
node->logid = FIELD_GET(CMN_NI_LOGICAL_ID, reg);
|
|
|
|
node->pmu_base = cmn->base + offset + CMN_PMU_OFFSET;
|
|
|
|
if (node->type == CMN_TYPE_CFG)
|
|
level = 0;
|
|
else if (node->type == CMN_TYPE_XP)
|
|
level = 1;
|
|
else
|
|
level = 2;
|
|
|
|
dev_dbg(cmn->dev, "node%*c%#06hx%*ctype:%-#6x id:%-4hd off:%#x\n",
|
|
(level * 2) + 1, ' ', node->id, 5 - (level * 2), ' ',
|
|
node->type, node->logid, offset);
|
|
}
|
|
|
|
static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
|
|
{
|
|
void __iomem *cfg_region;
|
|
struct arm_cmn_node cfg, *dn;
|
|
struct arm_cmn_dtm *dtm;
|
|
u16 child_count, child_poff;
|
|
u32 xp_offset[CMN_MAX_XPS];
|
|
u64 reg;
|
|
int i, j;
|
|
size_t sz;
|
|
|
|
arm_cmn_init_node_info(cmn, rgn_offset, &cfg);
|
|
if (cfg.type != CMN_TYPE_CFG)
|
|
return -ENODEV;
|
|
|
|
cfg_region = cmn->base + rgn_offset;
|
|
reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_2);
|
|
cmn->rev = FIELD_GET(CMN_CFGM_PID2_REVISION, reg);
|
|
|
|
reg = readq_relaxed(cfg_region + CMN_CFGM_INFO_GLOBAL);
|
|
cmn->multi_dtm = reg & CMN_INFO_MULTIPLE_DTM_EN;
|
|
cmn->rsp_vc_num = FIELD_GET(CMN_INFO_RSP_VC_NUM, reg);
|
|
cmn->dat_vc_num = FIELD_GET(CMN_INFO_DAT_VC_NUM, reg);
|
|
|
|
reg = readq_relaxed(cfg_region + CMN_CHILD_INFO);
|
|
child_count = FIELD_GET(CMN_CI_CHILD_COUNT, reg);
|
|
child_poff = FIELD_GET(CMN_CI_CHILD_PTR_OFFSET, reg);
|
|
|
|
cmn->num_xps = child_count;
|
|
cmn->num_dns = cmn->num_xps;
|
|
|
|
/* Pass 1: visit the XPs, enumerate their children */
|
|
for (i = 0; i < cmn->num_xps; i++) {
|
|
reg = readq_relaxed(cfg_region + child_poff + i * 8);
|
|
xp_offset[i] = reg & CMN_CHILD_NODE_ADDR;
|
|
|
|
reg = readq_relaxed(cmn->base + xp_offset[i] + CMN_CHILD_INFO);
|
|
cmn->num_dns += FIELD_GET(CMN_CI_CHILD_COUNT, reg);
|
|
}
|
|
|
|
/* Cheeky +1 to help terminate pointer-based iteration later */
|
|
dn = devm_kcalloc(cmn->dev, cmn->num_dns + 1, sizeof(*dn), GFP_KERNEL);
|
|
if (!dn)
|
|
return -ENOMEM;
|
|
|
|
/* Initial safe upper bound on DTMs for any possible mesh layout */
|
|
i = cmn->num_xps;
|
|
if (cmn->multi_dtm)
|
|
i += cmn->num_xps + 1;
|
|
dtm = devm_kcalloc(cmn->dev, i, sizeof(*dtm), GFP_KERNEL);
|
|
if (!dtm)
|
|
return -ENOMEM;
|
|
|
|
/* Pass 2: now we can actually populate the nodes */
|
|
cmn->dns = dn;
|
|
cmn->dtms = dtm;
|
|
for (i = 0; i < cmn->num_xps; i++) {
|
|
void __iomem *xp_region = cmn->base + xp_offset[i];
|
|
struct arm_cmn_node *xp = dn++;
|
|
unsigned int xp_ports = 0;
|
|
|
|
arm_cmn_init_node_info(cmn, xp_offset[i], xp);
|
|
/*
|
|
* Thanks to the order in which XP logical IDs seem to be
|
|
* assigned, we can handily infer the mesh X dimension by
|
|
* looking out for the XP at (0,1) without needing to know
|
|
* the exact node ID format, which we can later derive.
|
|
*/
|
|
if (xp->id == (1 << 3))
|
|
cmn->mesh_x = xp->logid;
|
|
|
|
if (cmn->model == CMN600)
|
|
xp->dtc = 0xf;
|
|
else
|
|
xp->dtc = 1 << readl_relaxed(xp_region + CMN_DTM_UNIT_INFO);
|
|
|
|
xp->dtm = dtm - cmn->dtms;
|
|
arm_cmn_init_dtm(dtm++, xp, 0);
|
|
/*
|
|
* Keeping track of connected ports will let us filter out
|
|
* unnecessary XP events easily. We can also reliably infer the
|
|
* "extra device ports" configuration for the node ID format
|
|
* from this, since in that case we will see at least one XP
|
|
* with port 2 connected, for the HN-D.
|
|
*/
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P0))
|
|
xp_ports |= BIT(0);
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P1))
|
|
xp_ports |= BIT(1);
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P2))
|
|
xp_ports |= BIT(2);
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P3))
|
|
xp_ports |= BIT(3);
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P4))
|
|
xp_ports |= BIT(4);
|
|
if (readq_relaxed(xp_region + CMN_MXP__CONNECT_INFO_P5))
|
|
xp_ports |= BIT(5);
|
|
|
|
if (cmn->multi_dtm && (xp_ports & 0xc))
|
|
arm_cmn_init_dtm(dtm++, xp, 1);
|
|
if (cmn->multi_dtm && (xp_ports & 0x30))
|
|
arm_cmn_init_dtm(dtm++, xp, 2);
|
|
|
|
cmn->ports_used |= xp_ports;
|
|
|
|
reg = readq_relaxed(xp_region + CMN_CHILD_INFO);
|
|
child_count = FIELD_GET(CMN_CI_CHILD_COUNT, reg);
|
|
child_poff = FIELD_GET(CMN_CI_CHILD_PTR_OFFSET, reg);
|
|
|
|
for (j = 0; j < child_count; j++) {
|
|
reg = readq_relaxed(xp_region + child_poff + j * 8);
|
|
/*
|
|
* Don't even try to touch anything external, since in general
|
|
* we haven't a clue how to power up arbitrary CHI requesters.
|
|
* As of CMN-600r1 these could only be RN-SAMs or CXLAs,
|
|
* neither of which have any PMU events anyway.
|
|
* (Actually, CXLAs do seem to have grown some events in r1p2,
|
|
* but they don't go to regular XP DTMs, and they depend on
|
|
* secure configuration which we can't easily deal with)
|
|
*/
|
|
if (reg & CMN_CHILD_NODE_EXTERNAL) {
|
|
dev_dbg(cmn->dev, "ignoring external node %llx\n", reg);
|
|
continue;
|
|
}
|
|
|
|
arm_cmn_init_node_info(cmn, reg & CMN_CHILD_NODE_ADDR, dn);
|
|
|
|
switch (dn->type) {
|
|
case CMN_TYPE_DTC:
|
|
cmn->num_dtcs++;
|
|
dn++;
|
|
break;
|
|
/* These guys have PMU events */
|
|
case CMN_TYPE_DVM:
|
|
case CMN_TYPE_HNI:
|
|
case CMN_TYPE_HNF:
|
|
case CMN_TYPE_SBSX:
|
|
case CMN_TYPE_RNI:
|
|
case CMN_TYPE_RND:
|
|
case CMN_TYPE_MTSX:
|
|
case CMN_TYPE_CXRA:
|
|
case CMN_TYPE_CXHA:
|
|
dn++;
|
|
break;
|
|
/* Nothing to see here */
|
|
case CMN_TYPE_MPAM_S:
|
|
case CMN_TYPE_MPAM_NS:
|
|
case CMN_TYPE_RNSAM:
|
|
case CMN_TYPE_CXLA:
|
|
break;
|
|
/* Something has gone horribly wrong */
|
|
default:
|
|
dev_err(cmn->dev, "invalid device node type: 0x%x\n", dn->type);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Correct for any nodes we skipped */
|
|
cmn->num_dns = dn - cmn->dns;
|
|
|
|
sz = (void *)(dn + 1) - (void *)cmn->dns;
|
|
dn = devm_krealloc(cmn->dev, cmn->dns, sz, GFP_KERNEL);
|
|
if (dn)
|
|
cmn->dns = dn;
|
|
|
|
sz = (void *)dtm - (void *)cmn->dtms;
|
|
dtm = devm_krealloc(cmn->dev, cmn->dtms, sz, GFP_KERNEL);
|
|
if (dtm)
|
|
cmn->dtms = dtm;
|
|
|
|
/*
|
|
* If mesh_x wasn't set during discovery then we never saw
|
|
* an XP at (0,1), thus we must have an Nx1 configuration.
|
|
*/
|
|
if (!cmn->mesh_x)
|
|
cmn->mesh_x = cmn->num_xps;
|
|
cmn->mesh_y = cmn->num_xps / cmn->mesh_x;
|
|
|
|
/* 1x1 config plays havoc with XP event encodings */
|
|
if (cmn->num_xps == 1)
|
|
dev_warn(cmn->dev, "1x1 config not fully supported, translate XP events manually\n");
|
|
|
|
dev_dbg(cmn->dev, "model %d, periph_id_2 revision %d\n", cmn->model, cmn->rev);
|
|
reg = cmn->ports_used;
|
|
dev_dbg(cmn->dev, "mesh %dx%d, ID width %d, ports %6pbl%s\n",
|
|
cmn->mesh_x, cmn->mesh_y, arm_cmn_xyidbits(cmn), ®,
|
|
cmn->multi_dtm ? ", multi-DTM" : "");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int arm_cmn600_acpi_probe(struct platform_device *pdev, struct arm_cmn *cmn)
|
|
{
|
|
struct resource *cfg, *root;
|
|
|
|
cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!cfg)
|
|
return -EINVAL;
|
|
|
|
root = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
if (!root)
|
|
return -EINVAL;
|
|
|
|
if (!resource_contains(cfg, root))
|
|
swap(cfg, root);
|
|
/*
|
|
* Note that devm_ioremap_resource() is dumb and won't let the platform
|
|
* device claim cfg when the ACPI companion device has already claimed
|
|
* root within it. But since they *are* already both claimed in the
|
|
* appropriate name, we don't really need to do it again here anyway.
|
|
*/
|
|
cmn->base = devm_ioremap(cmn->dev, cfg->start, resource_size(cfg));
|
|
if (!cmn->base)
|
|
return -ENOMEM;
|
|
|
|
return root->start - cfg->start;
|
|
}
|
|
|
|
static int arm_cmn600_of_probe(struct device_node *np)
|
|
{
|
|
u32 rootnode;
|
|
|
|
return of_property_read_u32(np, "arm,root-node", &rootnode) ?: rootnode;
|
|
}
|
|
|
|
static int arm_cmn_probe(struct platform_device *pdev)
|
|
{
|
|
struct arm_cmn *cmn;
|
|
const char *name;
|
|
static atomic_t id;
|
|
int err, rootnode, this_id;
|
|
|
|
cmn = devm_kzalloc(&pdev->dev, sizeof(*cmn), GFP_KERNEL);
|
|
if (!cmn)
|
|
return -ENOMEM;
|
|
|
|
cmn->dev = &pdev->dev;
|
|
cmn->model = (unsigned long)device_get_match_data(cmn->dev);
|
|
platform_set_drvdata(pdev, cmn);
|
|
|
|
if (cmn->model == CMN600 && has_acpi_companion(cmn->dev)) {
|
|
rootnode = arm_cmn600_acpi_probe(pdev, cmn);
|
|
} else {
|
|
rootnode = 0;
|
|
cmn->base = devm_platform_ioremap_resource(pdev, 0);
|
|
if (IS_ERR(cmn->base))
|
|
return PTR_ERR(cmn->base);
|
|
if (cmn->model == CMN600)
|
|
rootnode = arm_cmn600_of_probe(pdev->dev.of_node);
|
|
}
|
|
if (rootnode < 0)
|
|
return rootnode;
|
|
|
|
err = arm_cmn_discover(cmn, rootnode);
|
|
if (err)
|
|
return err;
|
|
|
|
err = arm_cmn_init_dtcs(cmn);
|
|
if (err)
|
|
return err;
|
|
|
|
err = arm_cmn_init_irqs(cmn);
|
|
if (err)
|
|
return err;
|
|
|
|
cmn->cpu = cpumask_local_spread(0, dev_to_node(cmn->dev));
|
|
cmn->pmu = (struct pmu) {
|
|
.module = THIS_MODULE,
|
|
.attr_groups = arm_cmn_attr_groups,
|
|
.capabilities = PERF_PMU_CAP_NO_EXCLUDE,
|
|
.task_ctx_nr = perf_invalid_context,
|
|
.pmu_enable = arm_cmn_pmu_enable,
|
|
.pmu_disable = arm_cmn_pmu_disable,
|
|
.event_init = arm_cmn_event_init,
|
|
.add = arm_cmn_event_add,
|
|
.del = arm_cmn_event_del,
|
|
.start = arm_cmn_event_start,
|
|
.stop = arm_cmn_event_stop,
|
|
.read = arm_cmn_event_read,
|
|
.start_txn = arm_cmn_start_txn,
|
|
.commit_txn = arm_cmn_commit_txn,
|
|
.cancel_txn = arm_cmn_end_txn,
|
|
};
|
|
|
|
this_id = atomic_fetch_inc(&id);
|
|
name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", this_id);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
err = cpuhp_state_add_instance(arm_cmn_hp_state, &cmn->cpuhp_node);
|
|
if (err)
|
|
return err;
|
|
|
|
err = perf_pmu_register(&cmn->pmu, name, -1);
|
|
if (err)
|
|
cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node);
|
|
else
|
|
arm_cmn_debugfs_init(cmn, this_id);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int arm_cmn_remove(struct platform_device *pdev)
|
|
{
|
|
struct arm_cmn *cmn = platform_get_drvdata(pdev);
|
|
|
|
writel_relaxed(0, cmn->dtc[0].base + CMN_DT_DTC_CTL);
|
|
|
|
perf_pmu_unregister(&cmn->pmu);
|
|
cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node);
|
|
debugfs_remove(cmn->debug);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id arm_cmn_of_match[] = {
|
|
{ .compatible = "arm,cmn-600", .data = (void *)CMN600 },
|
|
{ .compatible = "arm,ci-700", .data = (void *)CI700 },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI
|
|
static const struct acpi_device_id arm_cmn_acpi_match[] = {
|
|
{ "ARMHC600", CMN600 },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);
|
|
#endif
|
|
|
|
static struct platform_driver arm_cmn_driver = {
|
|
.driver = {
|
|
.name = "arm-cmn",
|
|
.of_match_table = of_match_ptr(arm_cmn_of_match),
|
|
.acpi_match_table = ACPI_PTR(arm_cmn_acpi_match),
|
|
},
|
|
.probe = arm_cmn_probe,
|
|
.remove = arm_cmn_remove,
|
|
};
|
|
|
|
static int __init arm_cmn_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
|
|
"perf/arm/cmn:online",
|
|
arm_cmn_pmu_online_cpu,
|
|
arm_cmn_pmu_offline_cpu);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
arm_cmn_hp_state = ret;
|
|
arm_cmn_debugfs = debugfs_create_dir("arm-cmn", NULL);
|
|
|
|
ret = platform_driver_register(&arm_cmn_driver);
|
|
if (ret) {
|
|
cpuhp_remove_multi_state(arm_cmn_hp_state);
|
|
debugfs_remove(arm_cmn_debugfs);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void __exit arm_cmn_exit(void)
|
|
{
|
|
platform_driver_unregister(&arm_cmn_driver);
|
|
cpuhp_remove_multi_state(arm_cmn_hp_state);
|
|
debugfs_remove(arm_cmn_debugfs);
|
|
}
|
|
|
|
module_init(arm_cmn_init);
|
|
module_exit(arm_cmn_exit);
|
|
|
|
MODULE_AUTHOR("Robin Murphy <robin.murphy@arm.com>");
|
|
MODULE_DESCRIPTION("Arm CMN-600 PMU driver");
|
|
MODULE_LICENSE("GPL v2");
|