| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tai Nguyen | 6175 | 57.92% | 2 | 22.22% |
| Hoan Tran | 4479 | 42.01% | 5 | 55.56% |
| Peter Zijlstra | 4 | 0.04% | 1 | 11.11% |
| Stephen Boyd | 3 | 0.03% | 1 | 11.11% |
| Total | 10661 | 9 |
/* * APM X-Gene SoC PMU (Performance Monitor Unit) * * Copyright (c) 2016, Applied Micro Circuits Corporation * Author: Hoan Tran <hotran@apm.com> * Tai Nguyen <ttnguyen@apm.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/cpuhotplug.h> #include <linux/cpumask.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/of_fdt.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/perf_event.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> #define CSW_CSWCR 0x0000 #define CSW_CSWCR_DUALMCB_MASK BIT(0) #define CSW_CSWCR_MCB0_ROUTING(x) (((x) & 0x0C) >> 2) #define CSW_CSWCR_MCB1_ROUTING(x) (((x) & 0x30) >> 4) #define MCBADDRMR 0x0000 #define MCBADDRMR_DUALMCU_MODE_MASK BIT(2) #define PCPPMU_INTSTATUS_REG 0x000 #define PCPPMU_INTMASK_REG 0x004 #define PCPPMU_INTMASK 0x0000000F #define PCPPMU_INTENMASK 0xFFFFFFFF #define PCPPMU_INTCLRMASK 0xFFFFFFF0 #define PCPPMU_INT_MCU BIT(0) #define PCPPMU_INT_MCB BIT(1) #define PCPPMU_INT_L3C BIT(2) #define PCPPMU_INT_IOB BIT(3) #define PCPPMU_V3_INTMASK 0x00FF33FF #define PCPPMU_V3_INTENMASK 0xFFFFFFFF #define PCPPMU_V3_INTCLRMASK 0xFF00CC00 #define PCPPMU_V3_INT_MCU 0x000000FF #define PCPPMU_V3_INT_MCB 0x00000300 #define PCPPMU_V3_INT_L3C 0x00FF0000 #define PCPPMU_V3_INT_IOB 0x00003000 #define PMU_MAX_COUNTERS 4 #define PMU_CNT_MAX_PERIOD 0xFFFFFFFFULL #define PMU_V3_CNT_MAX_PERIOD 0xFFFFFFFFFFFFFFFFULL #define PMU_OVERFLOW_MASK 0xF #define PMU_PMCR_E BIT(0) #define PMU_PMCR_P BIT(1) #define PMU_PMEVCNTR0 0x000 #define PMU_PMEVCNTR1 0x004 #define PMU_PMEVCNTR2 0x008 #define PMU_PMEVCNTR3 0x00C #define PMU_PMEVTYPER0 0x400 #define PMU_PMEVTYPER1 0x404 #define PMU_PMEVTYPER2 0x408 #define PMU_PMEVTYPER3 0x40C #define PMU_PMAMR0 0xA00 #define PMU_PMAMR1 0xA04 #define PMU_PMCNTENSET 0xC00 #define PMU_PMCNTENCLR 0xC20 #define PMU_PMINTENSET 0xC40 #define PMU_PMINTENCLR 0xC60 #define PMU_PMOVSR 0xC80 #define PMU_PMCR 0xE04 /* PMU registers for V3 */ #define PMU_PMOVSCLR 0xC80 #define PMU_PMOVSSET 0xCC0 #define to_pmu_dev(p) container_of(p, struct xgene_pmu_dev, pmu) #define GET_CNTR(ev) (ev->hw.idx) #define GET_EVENTID(ev) (ev->hw.config & 0xFFULL) #define GET_AGENTID(ev) (ev->hw.config_base & 0xFFFFFFFFUL) #define GET_AGENT1ID(ev) ((ev->hw.config_base >> 32) & 0xFFFFFFFFUL) struct hw_pmu_info { u32 type; u32 enable_mask; void __iomem *csr; }; struct xgene_pmu_dev { struct hw_pmu_info *inf; struct xgene_pmu *parent; struct pmu pmu; u8 max_counters; DECLARE_BITMAP(cntr_assign_mask, PMU_MAX_COUNTERS); u64 max_period; const struct attribute_group **attr_groups; struct perf_event *pmu_counter_event[PMU_MAX_COUNTERS]; }; struct xgene_pmu_ops { void (*mask_int)(struct xgene_pmu *pmu); void (*unmask_int)(struct xgene_pmu *pmu); u64 (*read_counter)(struct xgene_pmu_dev *pmu, int idx); void (*write_counter)(struct xgene_pmu_dev *pmu, int idx, u64 val); void (*write_evttype)(struct xgene_pmu_dev *pmu_dev, int idx, u32 val); void (*write_agentmsk)(struct xgene_pmu_dev *pmu_dev, u32 val); void (*write_agent1msk)(struct xgene_pmu_dev *pmu_dev, u32 val); void (*enable_counter)(struct xgene_pmu_dev *pmu_dev, int idx); void (*disable_counter)(struct xgene_pmu_dev *pmu_dev, int idx); void (*enable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx); void (*disable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx); void (*reset_counters)(struct xgene_pmu_dev *pmu_dev); void (*start_counters)(struct xgene_pmu_dev *pmu_dev); void (*stop_counters)(struct xgene_pmu_dev *pmu_dev); }; struct xgene_pmu { struct device *dev; struct hlist_node node; int version; void __iomem *pcppmu_csr; u32 mcb_active_mask; u32 mc_active_mask; u32 l3c_active_mask; cpumask_t cpu; int irq; raw_spinlock_t lock; const struct xgene_pmu_ops *ops; struct list_head l3cpmus; struct list_head iobpmus; struct list_head mcbpmus; struct list_head mcpmus; }; struct xgene_pmu_dev_ctx { char *name; struct list_head next; struct xgene_pmu_dev *pmu_dev; struct hw_pmu_info inf; }; struct xgene_pmu_data { int id; u32 data; }; enum xgene_pmu_version { PCP_PMU_V1 = 1, PCP_PMU_V2, PCP_PMU_V3, }; enum xgene_pmu_dev_type { PMU_TYPE_L3C = 0, PMU_TYPE_IOB, PMU_TYPE_IOB_SLOW, PMU_TYPE_MCB, PMU_TYPE_MC, }; /* * sysfs format attributes */ static ssize_t xgene_pmu_format_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dev_ext_attribute *eattr; eattr = container_of(attr, struct dev_ext_attribute, attr); return sprintf(buf, "%s\n", (char *) eattr->var); } #define XGENE_PMU_FORMAT_ATTR(_name, _config) \ (&((struct dev_ext_attribute[]) { \ { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_format_show, NULL), \ .var = (void *) _config, } \ })[0].attr.attr) static struct attribute *l3c_pmu_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-7"), XGENE_PMU_FORMAT_ATTR(l3c_agentid, "config1:0-9"), NULL, }; static struct attribute *iob_pmu_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-7"), XGENE_PMU_FORMAT_ATTR(iob_agentid, "config1:0-63"), NULL, }; static struct attribute *mcb_pmu_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-5"), XGENE_PMU_FORMAT_ATTR(mcb_agentid, "config1:0-9"), NULL, }; static struct attribute *mc_pmu_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-28"), NULL, }; static const struct attribute_group l3c_pmu_format_attr_group = { .name = "format", .attrs = l3c_pmu_format_attrs, }; static const struct attribute_group iob_pmu_format_attr_group = { .name = "format", .attrs = iob_pmu_format_attrs, }; static const struct attribute_group mcb_pmu_format_attr_group = { .name = "format", .attrs = mcb_pmu_format_attrs, }; static const struct attribute_group mc_pmu_format_attr_group = { .name = "format", .attrs = mc_pmu_format_attrs, }; static struct attribute *l3c_pmu_v3_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-39"), NULL, }; static struct attribute *iob_pmu_v3_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-47"), NULL, }; static struct attribute *iob_slow_pmu_v3_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(iob_slow_eventid, "config:0-16"), NULL, }; static struct attribute *mcb_pmu_v3_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-35"), NULL, }; static struct attribute *mc_pmu_v3_format_attrs[] = { XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-44"), NULL, }; static const struct attribute_group l3c_pmu_v3_format_attr_group = { .name = "format", .attrs = l3c_pmu_v3_format_attrs, }; static const struct attribute_group iob_pmu_v3_format_attr_group = { .name = "format", .attrs = iob_pmu_v3_format_attrs, }; static const struct attribute_group iob_slow_pmu_v3_format_attr_group = { .name = "format", .attrs = iob_slow_pmu_v3_format_attrs, }; static const struct attribute_group mcb_pmu_v3_format_attr_group = { .name = "format", .attrs = mcb_pmu_v3_format_attrs, }; static const struct attribute_group mc_pmu_v3_format_attr_group = { .name = "format", .attrs = mc_pmu_v3_format_attrs, }; /* * sysfs event attributes */ static ssize_t xgene_pmu_event_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dev_ext_attribute *eattr; eattr = container_of(attr, struct dev_ext_attribute, attr); return sprintf(buf, "config=0x%lx\n", (unsigned long) eattr->var); } #define XGENE_PMU_EVENT_ATTR(_name, _config) \ (&((struct dev_ext_attribute[]) { \ { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_event_show, NULL), \ .var = (void *) _config, } \ })[0].attr.attr) static struct attribute *l3c_pmu_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), XGENE_PMU_EVENT_ATTR(read-hit, 0x02), XGENE_PMU_EVENT_ATTR(read-miss, 0x03), XGENE_PMU_EVENT_ATTR(write-need-replacement, 0x06), XGENE_PMU_EVENT_ATTR(write-not-need-replacement, 0x07), XGENE_PMU_EVENT_ATTR(tq-full, 0x08), XGENE_PMU_EVENT_ATTR(ackq-full, 0x09), XGENE_PMU_EVENT_ATTR(wdb-full, 0x0a), XGENE_PMU_EVENT_ATTR(bank-fifo-full, 0x0b), XGENE_PMU_EVENT_ATTR(odb-full, 0x0c), XGENE_PMU_EVENT_ATTR(wbq-full, 0x0d), XGENE_PMU_EVENT_ATTR(bank-conflict-fifo-issue, 0x0e), XGENE_PMU_EVENT_ATTR(bank-fifo-issue, 0x0f), NULL, }; static struct attribute *iob_pmu_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), XGENE_PMU_EVENT_ATTR(axi0-read, 0x02), XGENE_PMU_EVENT_ATTR(axi0-read-partial, 0x03), XGENE_PMU_EVENT_ATTR(axi1-read, 0x04), XGENE_PMU_EVENT_ATTR(axi1-read-partial, 0x05), XGENE_PMU_EVENT_ATTR(csw-read-block, 0x06), XGENE_PMU_EVENT_ATTR(csw-read-partial, 0x07), XGENE_PMU_EVENT_ATTR(axi0-write, 0x10), XGENE_PMU_EVENT_ATTR(axi0-write-partial, 0x11), XGENE_PMU_EVENT_ATTR(axi1-write, 0x13), XGENE_PMU_EVENT_ATTR(axi1-write-partial, 0x14), XGENE_PMU_EVENT_ATTR(csw-inbound-dirty, 0x16), NULL, }; static struct attribute *mcb_pmu_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), XGENE_PMU_EVENT_ATTR(csw-read, 0x02), XGENE_PMU_EVENT_ATTR(csw-write-request, 0x03), XGENE_PMU_EVENT_ATTR(mcb-csw-stall, 0x04), XGENE_PMU_EVENT_ATTR(cancel-read-gack, 0x05), NULL, }; static struct attribute *mc_pmu_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), XGENE_PMU_EVENT_ATTR(act-cmd-sent, 0x02), XGENE_PMU_EVENT_ATTR(pre-cmd-sent, 0x03), XGENE_PMU_EVENT_ATTR(rd-cmd-sent, 0x04), XGENE_PMU_EVENT_ATTR(rda-cmd-sent, 0x05), XGENE_PMU_EVENT_ATTR(wr-cmd-sent, 0x06), XGENE_PMU_EVENT_ATTR(wra-cmd-sent, 0x07), XGENE_PMU_EVENT_ATTR(pde-cmd-sent, 0x08), XGENE_PMU_EVENT_ATTR(sre-cmd-sent, 0x09), XGENE_PMU_EVENT_ATTR(prea-cmd-sent, 0x0a), XGENE_PMU_EVENT_ATTR(ref-cmd-sent, 0x0b), XGENE_PMU_EVENT_ATTR(rd-rda-cmd-sent, 0x0c), XGENE_PMU_EVENT_ATTR(wr-wra-cmd-sent, 0x0d), XGENE_PMU_EVENT_ATTR(in-rd-collision, 0x0e), XGENE_PMU_EVENT_ATTR(in-wr-collision, 0x0f), XGENE_PMU_EVENT_ATTR(collision-queue-not-empty, 0x10), XGENE_PMU_EVENT_ATTR(collision-queue-full, 0x11), XGENE_PMU_EVENT_ATTR(mcu-request, 0x12), XGENE_PMU_EVENT_ATTR(mcu-rd-request, 0x13), XGENE_PMU_EVENT_ATTR(mcu-hp-rd-request, 0x14), XGENE_PMU_EVENT_ATTR(mcu-wr-request, 0x15), XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-all, 0x16), XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-cancel, 0x17), XGENE_PMU_EVENT_ATTR(mcu-rd-response, 0x18), XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-all, 0x19), XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-cancel, 0x1a), XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-all, 0x1b), XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-cancel, 0x1c), NULL, }; static const struct attribute_group l3c_pmu_events_attr_group = { .name = "events", .attrs = l3c_pmu_events_attrs, }; static const struct attribute_group iob_pmu_events_attr_group = { .name = "events", .attrs = iob_pmu_events_attrs, }; static const struct attribute_group mcb_pmu_events_attr_group = { .name = "events", .attrs = mcb_pmu_events_attrs, }; static const struct attribute_group mc_pmu_events_attr_group = { .name = "events", .attrs = mc_pmu_events_attrs, }; static struct attribute *l3c_pmu_v3_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(read-hit, 0x01), XGENE_PMU_EVENT_ATTR(read-miss, 0x02), XGENE_PMU_EVENT_ATTR(index-flush-eviction, 0x03), XGENE_PMU_EVENT_ATTR(write-caused-replacement, 0x04), XGENE_PMU_EVENT_ATTR(write-not-caused-replacement, 0x05), XGENE_PMU_EVENT_ATTR(clean-eviction, 0x06), XGENE_PMU_EVENT_ATTR(dirty-eviction, 0x07), XGENE_PMU_EVENT_ATTR(read, 0x08), XGENE_PMU_EVENT_ATTR(write, 0x09), XGENE_PMU_EVENT_ATTR(request, 0x0a), XGENE_PMU_EVENT_ATTR(tq-bank-conflict-issue-stall, 0x0b), XGENE_PMU_EVENT_ATTR(tq-full, 0x0c), XGENE_PMU_EVENT_ATTR(ackq-full, 0x0d), XGENE_PMU_EVENT_ATTR(wdb-full, 0x0e), XGENE_PMU_EVENT_ATTR(odb-full, 0x10), XGENE_PMU_EVENT_ATTR(wbq-full, 0x11), XGENE_PMU_EVENT_ATTR(input-req-async-fifo-stall, 0x12), XGENE_PMU_EVENT_ATTR(output-req-async-fifo-stall, 0x13), XGENE_PMU_EVENT_ATTR(output-data-async-fifo-stall, 0x14), XGENE_PMU_EVENT_ATTR(total-insertion, 0x15), XGENE_PMU_EVENT_ATTR(sip-insertions-r-set, 0x16), XGENE_PMU_EVENT_ATTR(sip-insertions-r-clear, 0x17), XGENE_PMU_EVENT_ATTR(dip-insertions-r-set, 0x18), XGENE_PMU_EVENT_ATTR(dip-insertions-r-clear, 0x19), XGENE_PMU_EVENT_ATTR(dip-insertions-force-r-set, 0x1a), XGENE_PMU_EVENT_ATTR(egression, 0x1b), XGENE_PMU_EVENT_ATTR(replacement, 0x1c), XGENE_PMU_EVENT_ATTR(old-replacement, 0x1d), XGENE_PMU_EVENT_ATTR(young-replacement, 0x1e), XGENE_PMU_EVENT_ATTR(r-set-replacement, 0x1f), XGENE_PMU_EVENT_ATTR(r-clear-replacement, 0x20), XGENE_PMU_EVENT_ATTR(old-r-replacement, 0x21), XGENE_PMU_EVENT_ATTR(old-nr-replacement, 0x22), XGENE_PMU_EVENT_ATTR(young-r-replacement, 0x23), XGENE_PMU_EVENT_ATTR(young-nr-replacement, 0x24), XGENE_PMU_EVENT_ATTR(bloomfilter-clearing, 0x25), XGENE_PMU_EVENT_ATTR(generation-flip, 0x26), XGENE_PMU_EVENT_ATTR(vcc-droop-detected, 0x27), NULL, }; static struct attribute *iob_fast_pmu_v3_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-all, 0x01), XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-rd, 0x02), XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-wr, 0x03), XGENE_PMU_EVENT_ATTR(pa-all-cp-req, 0x04), XGENE_PMU_EVENT_ATTR(pa-cp-blk-req, 0x05), XGENE_PMU_EVENT_ATTR(pa-cp-ptl-req, 0x06), XGENE_PMU_EVENT_ATTR(pa-cp-rd-req, 0x07), XGENE_PMU_EVENT_ATTR(pa-cp-wr-req, 0x08), XGENE_PMU_EVENT_ATTR(ba-all-req, 0x09), XGENE_PMU_EVENT_ATTR(ba-rd-req, 0x0a), XGENE_PMU_EVENT_ATTR(ba-wr-req, 0x0b), XGENE_PMU_EVENT_ATTR(pa-rd-shared-req-issued, 0x10), XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-req-issued, 0x11), XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-stashable, 0x12), XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-nonstashable, 0x13), XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-stashable, 0x14), XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-nonstashable, 0x15), XGENE_PMU_EVENT_ATTR(pa-ptl-wr-req, 0x16), XGENE_PMU_EVENT_ATTR(pa-ptl-rd-req, 0x17), XGENE_PMU_EVENT_ATTR(pa-wr-back-clean-data, 0x18), XGENE_PMU_EVENT_ATTR(pa-wr-back-cancelled-on-SS, 0x1b), XGENE_PMU_EVENT_ATTR(pa-barrier-occurrence, 0x1c), XGENE_PMU_EVENT_ATTR(pa-barrier-cycles, 0x1d), XGENE_PMU_EVENT_ATTR(pa-total-cp-snoops, 0x20), XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop, 0x21), XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop-hit, 0x22), XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop, 0x23), XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop-hit, 0x24), XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop, 0x25), XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop-hit, 0x26), XGENE_PMU_EVENT_ATTR(pa-req-buffer-full, 0x28), XGENE_PMU_EVENT_ATTR(cswlf-outbound-req-fifo-full, 0x29), XGENE_PMU_EVENT_ATTR(cswlf-inbound-snoop-fifo-backpressure, 0x2a), XGENE_PMU_EVENT_ATTR(cswlf-outbound-lack-fifo-full, 0x2b), XGENE_PMU_EVENT_ATTR(cswlf-inbound-gack-fifo-backpressure, 0x2c), XGENE_PMU_EVENT_ATTR(cswlf-outbound-data-fifo-full, 0x2d), XGENE_PMU_EVENT_ATTR(cswlf-inbound-data-fifo-backpressure, 0x2e), XGENE_PMU_EVENT_ATTR(cswlf-inbound-req-backpressure, 0x2f), NULL, }; static struct attribute *iob_slow_pmu_v3_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(pa-axi0-rd-req, 0x01), XGENE_PMU_EVENT_ATTR(pa-axi0-wr-req, 0x02), XGENE_PMU_EVENT_ATTR(pa-axi1-rd-req, 0x03), XGENE_PMU_EVENT_ATTR(pa-axi1-wr-req, 0x04), XGENE_PMU_EVENT_ATTR(ba-all-axi-req, 0x07), XGENE_PMU_EVENT_ATTR(ba-axi-rd-req, 0x08), XGENE_PMU_EVENT_ATTR(ba-axi-wr-req, 0x09), XGENE_PMU_EVENT_ATTR(ba-free-list-empty, 0x10), NULL, }; static struct attribute *mcb_pmu_v3_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(req-receive, 0x01), XGENE_PMU_EVENT_ATTR(rd-req-recv, 0x02), XGENE_PMU_EVENT_ATTR(rd-req-recv-2, 0x03), XGENE_PMU_EVENT_ATTR(wr-req-recv, 0x04), XGENE_PMU_EVENT_ATTR(wr-req-recv-2, 0x05), XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu, 0x06), XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu-2, 0x07), XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu, 0x08), XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu-2, 0x09), XGENE_PMU_EVENT_ATTR(glbl-ack-recv-for-rd-sent-to-spec-mcu, 0x0a), XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-for-rd-sent-to-spec-mcu, 0x0b), XGENE_PMU_EVENT_ATTR(glbl-ack-nogo-recv-for-rd-sent-to-spec-mcu, 0x0c), XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req, 0x0d), XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req-2, 0x0e), XGENE_PMU_EVENT_ATTR(wr-req-sent-to-mcu, 0x0f), XGENE_PMU_EVENT_ATTR(gack-recv, 0x10), XGENE_PMU_EVENT_ATTR(rd-gack-recv, 0x11), XGENE_PMU_EVENT_ATTR(wr-gack-recv, 0x12), XGENE_PMU_EVENT_ATTR(cancel-rd-gack, 0x13), XGENE_PMU_EVENT_ATTR(cancel-wr-gack, 0x14), XGENE_PMU_EVENT_ATTR(mcb-csw-req-stall, 0x15), XGENE_PMU_EVENT_ATTR(mcu-req-intf-blocked, 0x16), XGENE_PMU_EVENT_ATTR(mcb-mcu-rd-intf-stall, 0x17), XGENE_PMU_EVENT_ATTR(csw-rd-intf-blocked, 0x18), XGENE_PMU_EVENT_ATTR(csw-local-ack-intf-blocked, 0x19), XGENE_PMU_EVENT_ATTR(mcu-req-table-full, 0x1a), XGENE_PMU_EVENT_ATTR(mcu-stat-table-full, 0x1b), XGENE_PMU_EVENT_ATTR(mcu-wr-table-full, 0x1c), XGENE_PMU_EVENT_ATTR(mcu-rdreceipt-resp, 0x1d), XGENE_PMU_EVENT_ATTR(mcu-wrcomplete-resp, 0x1e), XGENE_PMU_EVENT_ATTR(mcu-retryack-resp, 0x1f), XGENE_PMU_EVENT_ATTR(mcu-pcrdgrant-resp, 0x20), XGENE_PMU_EVENT_ATTR(mcu-req-from-lastload, 0x21), XGENE_PMU_EVENT_ATTR(mcu-req-from-bypass, 0x22), XGENE_PMU_EVENT_ATTR(volt-droop-detect, 0x23), NULL, }; static struct attribute *mc_pmu_v3_events_attrs[] = { XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), XGENE_PMU_EVENT_ATTR(act-sent, 0x01), XGENE_PMU_EVENT_ATTR(pre-sent, 0x02), XGENE_PMU_EVENT_ATTR(rd-sent, 0x03), XGENE_PMU_EVENT_ATTR(rda-sent, 0x04), XGENE_PMU_EVENT_ATTR(wr-sent, 0x05), XGENE_PMU_EVENT_ATTR(wra-sent, 0x06), XGENE_PMU_EVENT_ATTR(pd-entry-vld, 0x07), XGENE_PMU_EVENT_ATTR(sref-entry-vld, 0x08), XGENE_PMU_EVENT_ATTR(prea-sent, 0x09), XGENE_PMU_EVENT_ATTR(ref-sent, 0x0a), XGENE_PMU_EVENT_ATTR(rd-rda-sent, 0x0b), XGENE_PMU_EVENT_ATTR(wr-wra-sent, 0x0c), XGENE_PMU_EVENT_ATTR(raw-hazard, 0x0d), XGENE_PMU_EVENT_ATTR(war-hazard, 0x0e), XGENE_PMU_EVENT_ATTR(waw-hazard, 0x0f), XGENE_PMU_EVENT_ATTR(rar-hazard, 0x10), XGENE_PMU_EVENT_ATTR(raw-war-waw-hazard, 0x11), XGENE_PMU_EVENT_ATTR(hprd-lprd-wr-req-vld, 0x12), XGENE_PMU_EVENT_ATTR(lprd-req-vld, 0x13), XGENE_PMU_EVENT_ATTR(hprd-req-vld, 0x14), XGENE_PMU_EVENT_ATTR(hprd-lprd-req-vld, 0x15), XGENE_PMU_EVENT_ATTR(wr-req-vld, 0x16), XGENE_PMU_EVENT_ATTR(partial-wr-req-vld, 0x17), XGENE_PMU_EVENT_ATTR(rd-retry, 0x18), XGENE_PMU_EVENT_ATTR(wr-retry, 0x19), XGENE_PMU_EVENT_ATTR(retry-gnt, 0x1a), XGENE_PMU_EVENT_ATTR(rank-change, 0x1b), XGENE_PMU_EVENT_ATTR(dir-change, 0x1c), XGENE_PMU_EVENT_ATTR(rank-dir-change, 0x1d), XGENE_PMU_EVENT_ATTR(rank-active, 0x1e), XGENE_PMU_EVENT_ATTR(rank-idle, 0x1f), XGENE_PMU_EVENT_ATTR(rank-pd, 0x20), XGENE_PMU_EVENT_ATTR(rank-sref, 0x21), XGENE_PMU_EVENT_ATTR(queue-fill-gt-thresh, 0x22), XGENE_PMU_EVENT_ATTR(queue-rds-gt-thresh, 0x23), XGENE_PMU_EVENT_ATTR(queue-wrs-gt-thresh, 0x24), XGENE_PMU_EVENT_ATTR(phy-updt-complt, 0x25), XGENE_PMU_EVENT_ATTR(tz-fail, 0x26), XGENE_PMU_EVENT_ATTR(dram-errc, 0x27), XGENE_PMU_EVENT_ATTR(dram-errd, 0x28), XGENE_PMU_EVENT_ATTR(rd-enq, 0x29), XGENE_PMU_EVENT_ATTR(wr-enq, 0x2a), XGENE_PMU_EVENT_ATTR(tmac-limit-reached, 0x2b), XGENE_PMU_EVENT_ATTR(tmaw-tracker-full, 0x2c), NULL, }; static const struct attribute_group l3c_pmu_v3_events_attr_group = { .name = "events", .attrs = l3c_pmu_v3_events_attrs, }; static const struct attribute_group iob_fast_pmu_v3_events_attr_group = { .name = "events", .attrs = iob_fast_pmu_v3_events_attrs, }; static const struct attribute_group iob_slow_pmu_v3_events_attr_group = { .name = "events", .attrs = iob_slow_pmu_v3_events_attrs, }; static const struct attribute_group mcb_pmu_v3_events_attr_group = { .name = "events", .attrs = mcb_pmu_v3_events_attrs, }; static const struct attribute_group mc_pmu_v3_events_attr_group = { .name = "events", .attrs = mc_pmu_v3_events_attrs, }; /* * sysfs cpumask attributes */ static ssize_t xgene_pmu_cpumask_show(struct device *dev, struct device_attribute *attr, char *buf) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(dev_get_drvdata(dev)); return cpumap_print_to_pagebuf(true, buf, &pmu_dev->parent->cpu); } static DEVICE_ATTR(cpumask, S_IRUGO, xgene_pmu_cpumask_show, NULL); static struct attribute *xgene_pmu_cpumask_attrs[] = { &dev_attr_cpumask.attr, NULL, }; static const struct attribute_group pmu_cpumask_attr_group = { .attrs = xgene_pmu_cpumask_attrs, }; /* * Per PMU device attribute groups of PMU v1 and v2 */ static const struct attribute_group *l3c_pmu_attr_groups[] = { &l3c_pmu_format_attr_group, &pmu_cpumask_attr_group, &l3c_pmu_events_attr_group, NULL }; static const struct attribute_group *iob_pmu_attr_groups[] = { &iob_pmu_format_attr_group, &pmu_cpumask_attr_group, &iob_pmu_events_attr_group, NULL }; static const struct attribute_group *mcb_pmu_attr_groups[] = { &mcb_pmu_format_attr_group, &pmu_cpumask_attr_group, &mcb_pmu_events_attr_group, NULL }; static const struct attribute_group *mc_pmu_attr_groups[] = { &mc_pmu_format_attr_group, &pmu_cpumask_attr_group, &mc_pmu_events_attr_group, NULL }; /* * Per PMU device attribute groups of PMU v3 */ static const struct attribute_group *l3c_pmu_v3_attr_groups[] = { &l3c_pmu_v3_format_attr_group, &pmu_cpumask_attr_group, &l3c_pmu_v3_events_attr_group, NULL }; static const struct attribute_group *iob_fast_pmu_v3_attr_groups[] = { &iob_pmu_v3_format_attr_group, &pmu_cpumask_attr_group, &iob_fast_pmu_v3_events_attr_group, NULL }; static const struct attribute_group *iob_slow_pmu_v3_attr_groups[] = { &iob_slow_pmu_v3_format_attr_group, &pmu_cpumask_attr_group, &iob_slow_pmu_v3_events_attr_group, NULL }; static const struct attribute_group *mcb_pmu_v3_attr_groups[] = { &mcb_pmu_v3_format_attr_group, &pmu_cpumask_attr_group, &mcb_pmu_v3_events_attr_group, NULL }; static const struct attribute_group *mc_pmu_v3_attr_groups[] = { &mc_pmu_v3_format_attr_group, &pmu_cpumask_attr_group, &mc_pmu_v3_events_attr_group, NULL }; static int get_next_avail_cntr(struct xgene_pmu_dev *pmu_dev) { int cntr; cntr = find_first_zero_bit(pmu_dev->cntr_assign_mask, pmu_dev->max_counters); if (cntr == pmu_dev->max_counters) return -ENOSPC; set_bit(cntr, pmu_dev->cntr_assign_mask); return cntr; } static void clear_avail_cntr(struct xgene_pmu_dev *pmu_dev, int cntr) { clear_bit(cntr, pmu_dev->cntr_assign_mask); } static inline void xgene_pmu_mask_int(struct xgene_pmu *xgene_pmu) { writel(PCPPMU_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); } static inline void xgene_pmu_v3_mask_int(struct xgene_pmu *xgene_pmu) { writel(PCPPMU_V3_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); } static inline void xgene_pmu_unmask_int(struct xgene_pmu *xgene_pmu) { writel(PCPPMU_INTCLRMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); } static inline void xgene_pmu_v3_unmask_int(struct xgene_pmu *xgene_pmu) { writel(PCPPMU_V3_INTCLRMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); } static inline u64 xgene_pmu_read_counter32(struct xgene_pmu_dev *pmu_dev, int idx) { return readl(pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx)); } static inline u64 xgene_pmu_read_counter64(struct xgene_pmu_dev *pmu_dev, int idx) { u32 lo, hi; /* * v3 has 64-bit counter registers composed by 2 32-bit registers * This can be a problem if the counter increases and carries * out of bit [31] between 2 reads. The extra reads would help * to prevent this issue. */ do { hi = xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1); lo = xgene_pmu_read_counter32(pmu_dev, 2 * idx); } while (hi != xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1)); return (((u64)hi << 32) | lo); } static inline void xgene_pmu_write_counter32(struct xgene_pmu_dev *pmu_dev, int idx, u64 val) { writel(val, pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx)); } static inline void xgene_pmu_write_counter64(struct xgene_pmu_dev *pmu_dev, int idx, u64 val) { u32 cnt_lo, cnt_hi; cnt_hi = upper_32_bits(val); cnt_lo = lower_32_bits(val); /* v3 has 64-bit counter registers composed by 2 32-bit registers */ xgene_pmu_write_counter32(pmu_dev, 2 * idx, cnt_lo); xgene_pmu_write_counter32(pmu_dev, 2 * idx + 1, cnt_hi); } static inline void xgene_pmu_write_evttype(struct xgene_pmu_dev *pmu_dev, int idx, u32 val) { writel(val, pmu_dev->inf->csr + PMU_PMEVTYPER0 + (4 * idx)); } static inline void xgene_pmu_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val) { writel(val, pmu_dev->inf->csr + PMU_PMAMR0); } static inline void xgene_pmu_v3_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val) { } static inline void xgene_pmu_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val) { writel(val, pmu_dev->inf->csr + PMU_PMAMR1); } static inline void xgene_pmu_v3_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val) { } static inline void xgene_pmu_enable_counter(struct xgene_pmu_dev *pmu_dev, int idx) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMCNTENSET); val |= 1 << idx; writel(val, pmu_dev->inf->csr + PMU_PMCNTENSET); } static inline void xgene_pmu_disable_counter(struct xgene_pmu_dev *pmu_dev, int idx) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMCNTENCLR); val |= 1 << idx; writel(val, pmu_dev->inf->csr + PMU_PMCNTENCLR); } static inline void xgene_pmu_enable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMINTENSET); val |= 1 << idx; writel(val, pmu_dev->inf->csr + PMU_PMINTENSET); } static inline void xgene_pmu_disable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMINTENCLR); val |= 1 << idx; writel(val, pmu_dev->inf->csr + PMU_PMINTENCLR); } static inline void xgene_pmu_reset_counters(struct xgene_pmu_dev *pmu_dev) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMCR); val |= PMU_PMCR_P; writel(val, pmu_dev->inf->csr + PMU_PMCR); } static inline void xgene_pmu_start_counters(struct xgene_pmu_dev *pmu_dev) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMCR); val |= PMU_PMCR_E; writel(val, pmu_dev->inf->csr + PMU_PMCR); } static inline void xgene_pmu_stop_counters(struct xgene_pmu_dev *pmu_dev) { u32 val; val = readl(pmu_dev->inf->csr + PMU_PMCR); val &= ~PMU_PMCR_E; writel(val, pmu_dev->inf->csr + PMU_PMCR); } static void xgene_perf_pmu_enable(struct pmu *pmu) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; int enabled = bitmap_weight(pmu_dev->cntr_assign_mask, pmu_dev->max_counters); if (!enabled) return; xgene_pmu->ops->start_counters(pmu_dev); } static void xgene_perf_pmu_disable(struct pmu *pmu) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; xgene_pmu->ops->stop_counters(pmu_dev); } static int xgene_perf_event_init(struct perf_event *event) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct hw_perf_event *hw = &event->hw; struct perf_event *sibling; /* Test the event attr type check for PMU enumeration */ if (event->attr.type != event->pmu->type) return -ENOENT; /* * SOC PMU 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; /* SOC counters do not have usr/os/guest/host bits */ if (event->attr.exclude_user || event->attr.exclude_kernel || event->attr.exclude_host || event->attr.exclude_guest) return -EINVAL; if (event->cpu < 0) return -EINVAL; /* * Many perf core operations (eg. events rotation) operate on a * single CPU context. This is obvious for CPU PMUs, where one * expects the same sets of events being observed on all CPUs, * but can lead to issues for off-core PMUs, where each * event could be theoretically assigned to a different CPU. To * mitigate this, we enforce CPU assignment to one, selected * processor (the one described in the "cpumask" attribute). */ event->cpu = cpumask_first(&pmu_dev->parent->cpu); hw->config = event->attr.config; /* * Each bit of the config1 field represents an agent from which the * request of the event come. The event is counted only if it's caused * by a request of an agent has the bit cleared. * By default, the event is counted for all agents. */ hw->config_base = event->attr.config1; /* * We must NOT create groups containing mixed PMUs, although software * events are acceptable */ if (event->group_leader->pmu != event->pmu && !is_software_event(event->group_leader)) return -EINVAL; for_each_sibling_event(sibling, event->group_leader) { if (sibling->pmu != event->pmu && !is_software_event(sibling)) return -EINVAL; } return 0; } static void xgene_perf_enable_event(struct perf_event *event) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; xgene_pmu->ops->write_evttype(pmu_dev, GET_CNTR(event), GET_EVENTID(event)); xgene_pmu->ops->write_agentmsk(pmu_dev, ~((u32)GET_AGENTID(event))); if (pmu_dev->inf->type == PMU_TYPE_IOB) xgene_pmu->ops->write_agent1msk(pmu_dev, ~((u32)GET_AGENT1ID(event))); xgene_pmu->ops->enable_counter(pmu_dev, GET_CNTR(event)); xgene_pmu->ops->enable_counter_int(pmu_dev, GET_CNTR(event)); } static void xgene_perf_disable_event(struct perf_event *event) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; xgene_pmu->ops->disable_counter(pmu_dev, GET_CNTR(event)); xgene_pmu->ops->disable_counter_int(pmu_dev, GET_CNTR(event)); } static void xgene_perf_event_set_period(struct perf_event *event) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; struct hw_perf_event *hw = &event->hw; /* * For 32 bit counter, it has a period of 2^32. To account for the * possibility of extreme interrupt latency we program for a period of * half that. Hopefully, we can handle the interrupt before another 2^31 * events occur and the counter overtakes its previous value. * For 64 bit counter, we don't expect it overflow. */ u64 val = 1ULL << 31; local64_set(&hw->prev_count, val); xgene_pmu->ops->write_counter(pmu_dev, hw->idx, val); } static void xgene_perf_event_update(struct perf_event *event) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; struct hw_perf_event *hw = &event->hw; u64 delta, prev_raw_count, new_raw_count; again: prev_raw_count = local64_read(&hw->prev_count); new_raw_count = xgene_pmu->ops->read_counter(pmu_dev, GET_CNTR(event)); if (local64_cmpxchg(&hw->prev_count, prev_raw_count, new_raw_count) != prev_raw_count) goto again; delta = (new_raw_count - prev_raw_count) & pmu_dev->max_period; local64_add(delta, &event->count); } static void xgene_perf_read(struct perf_event *event) { xgene_perf_event_update(event); } static void xgene_perf_start(struct perf_event *event, int flags) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct xgene_pmu *xgene_pmu = pmu_dev->parent; struct hw_perf_event *hw = &event->hw; if (WARN_ON_ONCE(!(hw->state & PERF_HES_STOPPED))) return; WARN_ON_ONCE(!(hw->state & PERF_HES_UPTODATE)); hw->state = 0; xgene_perf_event_set_period(event); if (flags & PERF_EF_RELOAD) { u64 prev_raw_count = local64_read(&hw->prev_count); xgene_pmu->ops->write_counter(pmu_dev, GET_CNTR(event), prev_raw_count); } xgene_perf_enable_event(event); perf_event_update_userpage(event); } static void xgene_perf_stop(struct perf_event *event, int flags) { struct hw_perf_event *hw = &event->hw; u64 config; if (hw->state & PERF_HES_UPTODATE) return; xgene_perf_disable_event(event); WARN_ON_ONCE(hw->state & PERF_HES_STOPPED); hw->state |= PERF_HES_STOPPED; if (hw->state & PERF_HES_UPTODATE) return; config = hw->config; xgene_perf_read(event); hw->state |= PERF_HES_UPTODATE; } static int xgene_perf_add(struct perf_event *event, int flags) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct hw_perf_event *hw = &event->hw; hw->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; /* Allocate an event counter */ hw->idx = get_next_avail_cntr(pmu_dev); if (hw->idx < 0) return -EAGAIN; /* Update counter event pointer for Interrupt handler */ pmu_dev->pmu_counter_event[hw->idx] = event; if (flags & PERF_EF_START) xgene_perf_start(event, PERF_EF_RELOAD); return 0; } static void xgene_perf_del(struct perf_event *event, int flags) { struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); struct hw_perf_event *hw = &event->hw; xgene_perf_stop(event, PERF_EF_UPDATE); /* clear the assigned counter */ clear_avail_cntr(pmu_dev, GET_CNTR(event)); perf_event_update_userpage(event); pmu_dev->pmu_counter_event[hw->idx] = NULL; } static int xgene_init_perf(struct xgene_pmu_dev *pmu_dev, char *name) { struct xgene_pmu *xgene_pmu; if (pmu_dev->parent->version == PCP_PMU_V3) pmu_dev->max_period = PMU_V3_CNT_MAX_PERIOD; else pmu_dev->max_period = PMU_CNT_MAX_PERIOD; /* First version PMU supports only single event counter */ xgene_pmu = pmu_dev->parent; if (xgene_pmu->version == PCP_PMU_V1) pmu_dev->max_counters = 1; else pmu_dev->max_counters = PMU_MAX_COUNTERS; /* Perf driver registration */ pmu_dev->pmu = (struct pmu) { .attr_groups = pmu_dev->attr_groups, .task_ctx_nr = perf_invalid_context, .pmu_enable = xgene_perf_pmu_enable, .pmu_disable = xgene_perf_pmu_disable, .event_init = xgene_perf_event_init, .add = xgene_perf_add, .del = xgene_perf_del, .start = xgene_perf_start, .stop = xgene_perf_stop, .read = xgene_perf_read, }; /* Hardware counter init */ xgene_pmu->ops->stop_counters(pmu_dev); xgene_pmu->ops->reset_counters(pmu_dev); return perf_pmu_register(&pmu_dev->pmu, name, -1); } static int xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx) { struct device *dev = xgene_pmu->dev; struct xgene_pmu_dev *pmu; pmu = devm_kzalloc(dev, sizeof(*pmu), GFP_KERNEL); if (!pmu) return -ENOMEM; pmu->parent = xgene_pmu; pmu->inf = &ctx->inf; ctx->pmu_dev = pmu; switch (pmu->inf->type) { case PMU_TYPE_L3C: if (!(xgene_pmu->l3c_active_mask & pmu->inf->enable_mask)) return -ENODEV; if (xgene_pmu->version == PCP_PMU_V3) pmu->attr_groups = l3c_pmu_v3_attr_groups; else pmu->attr_groups = l3c_pmu_attr_groups; break; case PMU_TYPE_IOB: if (xgene_pmu->version == PCP_PMU_V3) pmu->attr_groups = iob_fast_pmu_v3_attr_groups; else pmu->attr_groups = iob_pmu_attr_groups; break; case PMU_TYPE_IOB_SLOW: if (xgene_pmu->version == PCP_PMU_V3) pmu->attr_groups = iob_slow_pmu_v3_attr_groups; break; case PMU_TYPE_MCB: if (!(xgene_pmu->mcb_active_mask & pmu->inf->enable_mask)) return -ENODEV; if (xgene_pmu->version == PCP_PMU_V3) pmu->attr_groups = mcb_pmu_v3_attr_groups; else pmu->attr_groups = mcb_pmu_attr_groups; break; case PMU_TYPE_MC: if (!(xgene_pmu->mc_active_mask & pmu->inf->enable_mask)) return -ENODEV; if (xgene_pmu->version == PCP_PMU_V3) pmu->attr_groups = mc_pmu_v3_attr_groups; else pmu->attr_groups = mc_pmu_attr_groups; break; default: return -EINVAL; } if (xgene_init_perf(pmu, ctx->name)) { dev_err(dev, "%s PMU: Failed to init perf driver\n", ctx->name); return -ENODEV; } dev_info(dev, "%s PMU registered\n", ctx->name); return 0; } static void _xgene_pmu_isr(int irq, struct xgene_pmu_dev *pmu_dev) { struct xgene_pmu *xgene_pmu = pmu_dev->parent; void __iomem *csr = pmu_dev->inf->csr; u32 pmovsr; int idx; xgene_pmu->ops->stop_counters(pmu_dev); if (xgene_pmu->version == PCP_PMU_V3) pmovsr = readl(csr + PMU_PMOVSSET) & PMU_OVERFLOW_MASK; else pmovsr = readl(csr + PMU_PMOVSR) & PMU_OVERFLOW_MASK; if (!pmovsr) goto out; /* Clear interrupt flag */ if (xgene_pmu->version == PCP_PMU_V1) writel(0x0, csr + PMU_PMOVSR); else if (xgene_pmu->version == PCP_PMU_V2) writel(pmovsr, csr + PMU_PMOVSR); else writel(pmovsr, csr + PMU_PMOVSCLR); for (idx = 0; idx < PMU_MAX_COUNTERS; idx++) { struct perf_event *event = pmu_dev->pmu_counter_event[idx]; int overflowed = pmovsr & BIT(idx); /* Ignore if we don't have an event. */ if (!event || !overflowed) continue; xgene_perf_event_update(event); xgene_perf_event_set_period(event); } out: xgene_pmu->ops->start_counters(pmu_dev); } static irqreturn_t xgene_pmu_isr(int irq, void *dev_id) { u32 intr_mcu, intr_mcb, intr_l3c, intr_iob; struct xgene_pmu_dev_ctx *ctx; struct xgene_pmu *xgene_pmu = dev_id; unsigned long flags; u32 val; raw_spin_lock_irqsave(&xgene_pmu->lock, flags); /* Get Interrupt PMU source */ val = readl(xgene_pmu->pcppmu_csr + PCPPMU_INTSTATUS_REG); if (xgene_pmu->version == PCP_PMU_V3) { intr_mcu = PCPPMU_V3_INT_MCU; intr_mcb = PCPPMU_V3_INT_MCB; intr_l3c = PCPPMU_V3_INT_L3C; intr_iob = PCPPMU_V3_INT_IOB; } else { intr_mcu = PCPPMU_INT_MCU; intr_mcb = PCPPMU_INT_MCB; intr_l3c = PCPPMU_INT_L3C; intr_iob = PCPPMU_INT_IOB; } if (val & intr_mcu) { list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) { _xgene_pmu_isr(irq, ctx->pmu_dev); } } if (val & intr_mcb) { list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) { _xgene_pmu_isr(irq, ctx->pmu_dev); } } if (val & intr_l3c) { list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) { _xgene_pmu_isr(irq, ctx->pmu_dev); } } if (val & intr_iob) { list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) { _xgene_pmu_isr(irq, ctx->pmu_dev); } } raw_spin_unlock_irqrestore(&xgene_pmu->lock, flags); return IRQ_HANDLED; } static int acpi_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { void __iomem *csw_csr, *mcba_csr, *mcbb_csr; struct resource *res; unsigned int reg; res = platform_get_resource(pdev, IORESOURCE_MEM, 1); csw_csr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(csw_csr)) { dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n"); return PTR_ERR(csw_csr); } res = platform_get_resource(pdev, IORESOURCE_MEM, 2); mcba_csr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(mcba_csr)) { dev_err(&pdev->dev, "ioremap failed for MCBA CSR resource\n"); return PTR_ERR(mcba_csr); } res = platform_get_resource(pdev, IORESOURCE_MEM, 3); mcbb_csr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(mcbb_csr)) { dev_err(&pdev->dev, "ioremap failed for MCBB CSR resource\n"); return PTR_ERR(mcbb_csr); } xgene_pmu->l3c_active_mask = 0x1; reg = readl(csw_csr + CSW_CSWCR); if (reg & CSW_CSWCR_DUALMCB_MASK) { /* Dual MCB active */ xgene_pmu->mcb_active_mask = 0x3; /* Probe all active MC(s) */ reg = readl(mcbb_csr + CSW_CSWCR); xgene_pmu->mc_active_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5; } else { /* Single MCB active */ xgene_pmu->mcb_active_mask = 0x1; /* Probe all active MC(s) */ reg = readl(mcba_csr + CSW_CSWCR); xgene_pmu->mc_active_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1; } return 0; } static int acpi_pmu_v3_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { void __iomem *csw_csr; struct resource *res; unsigned int reg; u32 mcb0routing; u32 mcb1routing; res = platform_get_resource(pdev, IORESOURCE_MEM, 1); csw_csr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(csw_csr)) { dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n"); return PTR_ERR(csw_csr); } reg = readl(csw_csr + CSW_CSWCR); mcb0routing = CSW_CSWCR_MCB0_ROUTING(reg); mcb1routing = CSW_CSWCR_MCB1_ROUTING(reg); if (reg & CSW_CSWCR_DUALMCB_MASK) { /* Dual MCB active */ xgene_pmu->mcb_active_mask = 0x3; /* Probe all active L3C(s), maximum is 8 */ xgene_pmu->l3c_active_mask = 0xFF; /* Probe all active MC(s), maximum is 8 */ if ((mcb0routing == 0x2) && (mcb1routing == 0x2)) xgene_pmu->mc_active_mask = 0xFF; else if ((mcb0routing == 0x1) && (mcb1routing == 0x1)) xgene_pmu->mc_active_mask = 0x33; else xgene_pmu->mc_active_mask = 0x11; } else { /* Single MCB active */ xgene_pmu->mcb_active_mask = 0x1; /* Probe all active L3C(s), maximum is 4 */ xgene_pmu->l3c_active_mask = 0x0F; /* Probe all active MC(s), maximum is 4 */ if (mcb0routing == 0x2) xgene_pmu->mc_active_mask = 0x0F; else if (mcb0routing == 0x1) xgene_pmu->mc_active_mask = 0x03; else xgene_pmu->mc_active_mask = 0x01; } return 0; } static int fdt_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { struct regmap *csw_map, *mcba_map, *mcbb_map; struct device_node *np = pdev->dev.of_node; unsigned int reg; csw_map = syscon_regmap_lookup_by_phandle(np, "regmap-csw"); if (IS_ERR(csw_map)) { dev_err(&pdev->dev, "unable to get syscon regmap csw\n"); return PTR_ERR(csw_map); } mcba_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcba"); if (IS_ERR(mcba_map)) { dev_err(&pdev->dev, "unable to get syscon regmap mcba\n"); return PTR_ERR(mcba_map); } mcbb_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcbb"); if (IS_ERR(mcbb_map)) { dev_err(&pdev->dev, "unable to get syscon regmap mcbb\n"); return PTR_ERR(mcbb_map); } xgene_pmu->l3c_active_mask = 0x1; if (regmap_read(csw_map, CSW_CSWCR, ®)) return -EINVAL; if (reg & CSW_CSWCR_DUALMCB_MASK) { /* Dual MCB active */ xgene_pmu->mcb_active_mask = 0x3; /* Probe all active MC(s) */ if (regmap_read(mcbb_map, MCBADDRMR, ®)) return 0; xgene_pmu->mc_active_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5; } else { /* Single MCB active */ xgene_pmu->mcb_active_mask = 0x1; /* Probe all active MC(s) */ if (regmap_read(mcba_map, MCBADDRMR, ®)) return 0; xgene_pmu->mc_active_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1; } return 0; } static int xgene_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { if (has_acpi_companion(&pdev->dev)) { if (xgene_pmu->version == PCP_PMU_V3) return acpi_pmu_v3_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); else return acpi_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); } return fdt_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); } static char *xgene_pmu_dev_name(struct device *dev, u32 type, int id) { switch (type) { case PMU_TYPE_L3C: return devm_kasprintf(dev, GFP_KERNEL, "l3c%d", id); case PMU_TYPE_IOB: return devm_kasprintf(dev, GFP_KERNEL, "iob%d", id); case PMU_TYPE_IOB_SLOW: return devm_kasprintf(dev, GFP_KERNEL, "iob_slow%d", id); case PMU_TYPE_MCB: return devm_kasprintf(dev, GFP_KERNEL, "mcb%d", id); case PMU_TYPE_MC: return devm_kasprintf(dev, GFP_KERNEL, "mc%d", id); default: return devm_kasprintf(dev, GFP_KERNEL, "unknown"); } } #if defined(CONFIG_ACPI) static int acpi_pmu_dev_add_resource(struct acpi_resource *ares, void *data) { struct resource *res = data; if (ares->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) acpi_dev_resource_memory(ares, res); /* Always tell the ACPI core to skip this resource */ return 1; } static struct xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu, struct acpi_device *adev, u32 type) { struct device *dev = xgene_pmu->dev; struct list_head resource_list; struct xgene_pmu_dev_ctx *ctx; const union acpi_object *obj; struct hw_pmu_info *inf; void __iomem *dev_csr; struct resource res; int enable_bit; int rc; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return NULL; INIT_LIST_HEAD(&resource_list); rc = acpi_dev_get_resources(adev, &resource_list, acpi_pmu_dev_add_resource, &res); acpi_dev_free_resource_list(&resource_list); if (rc < 0) { dev_err(dev, "PMU type %d: No resource address found\n", type); return NULL; } dev_csr = devm_ioremap_resource(dev, &res); if (IS_ERR(dev_csr)) { dev_err(dev, "PMU type %d: Fail to map resource\n", type); return NULL; } /* A PMU device node without enable-bit-index is always enabled */ rc = acpi_dev_get_property(adev, "enable-bit-index", ACPI_TYPE_INTEGER, &obj); if (rc < 0) enable_bit = 0; else enable_bit = (int) obj->integer.value; ctx->name = xgene_pmu_dev_name(dev, type, enable_bit); if (!ctx->name) { dev_err(dev, "PMU type %d: Fail to get device name\n", type); return NULL; } inf = &ctx->inf; inf->type = type; inf->csr = dev_csr; inf->enable_mask = 1 << enable_bit; return ctx; } static const struct acpi_device_id xgene_pmu_acpi_type_match[] = { {"APMC0D5D", PMU_TYPE_L3C}, {"APMC0D5E", PMU_TYPE_IOB}, {"APMC0D5F", PMU_TYPE_MCB}, {"APMC0D60", PMU_TYPE_MC}, {"APMC0D84", PMU_TYPE_L3C}, {"APMC0D85", PMU_TYPE_IOB}, {"APMC0D86", PMU_TYPE_IOB_SLOW}, {"APMC0D87", PMU_TYPE_MCB}, {"APMC0D88", PMU_TYPE_MC}, {}, }; static const struct acpi_device_id *xgene_pmu_acpi_match_type( const struct acpi_device_id *ids, struct acpi_device *adev) { const struct acpi_device_id *match_id = NULL; const struct acpi_device_id *id; for (id = ids; id->id[0] || id->cls; id++) { if (!acpi_match_device_ids(adev, id)) match_id = id; else if (match_id) break; } return match_id; } static acpi_status acpi_pmu_dev_add(acpi_handle handle, u32 level, void *data, void **return_value) { const struct acpi_device_id *acpi_id; struct xgene_pmu *xgene_pmu = data; struct xgene_pmu_dev_ctx *ctx; struct acpi_device *adev; if (acpi_bus_get_device(handle, &adev)) return AE_OK; if (acpi_bus_get_status(adev) || !adev->status.present) return AE_OK; acpi_id = xgene_pmu_acpi_match_type(xgene_pmu_acpi_type_match, adev); if (!acpi_id) return AE_OK; ctx = acpi_get_pmu_hw_inf(xgene_pmu, adev, (u32)acpi_id->driver_data); if (!ctx) return AE_OK; if (xgene_pmu_dev_add(xgene_pmu, ctx)) { /* Can't add the PMU device, skip it */ devm_kfree(xgene_pmu->dev, ctx); return AE_OK; } switch (ctx->inf.type) { case PMU_TYPE_L3C: list_add(&ctx->next, &xgene_pmu->l3cpmus); break; case PMU_TYPE_IOB: list_add(&ctx->next, &xgene_pmu->iobpmus); break; case PMU_TYPE_IOB_SLOW: list_add(&ctx->next, &xgene_pmu->iobpmus); break; case PMU_TYPE_MCB: list_add(&ctx->next, &xgene_pmu->mcbpmus); break; case PMU_TYPE_MC: list_add(&ctx->next, &xgene_pmu->mcpmus); break; } return AE_OK; } static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { struct device *dev = xgene_pmu->dev; acpi_handle handle; acpi_status status; handle = ACPI_HANDLE(dev); if (!handle) return -EINVAL; status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, acpi_pmu_dev_add, NULL, xgene_pmu, NULL); if (ACPI_FAILURE(status)) { dev_err(dev, "failed to probe PMU devices\n"); return -ENODEV; } return 0; } #else static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { return 0; } #endif static struct xgene_pmu_dev_ctx *fdt_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu, struct device_node *np, u32 type) { struct device *dev = xgene_pmu->dev; struct xgene_pmu_dev_ctx *ctx; struct hw_pmu_info *inf; void __iomem *dev_csr; struct resource res; int enable_bit; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return NULL; if (of_address_to_resource(np, 0, &res) < 0) { dev_err(dev, "PMU type %d: No resource address found\n", type); return NULL; } dev_csr = devm_ioremap_resource(dev, &res); if (IS_ERR(dev_csr)) { dev_err(dev, "PMU type %d: Fail to map resource\n", type); return NULL; } /* A PMU device node without enable-bit-index is always enabled */ if (of_property_read_u32(np, "enable-bit-index", &enable_bit)) enable_bit = 0; ctx->name = xgene_pmu_dev_name(dev, type, enable_bit); if (!ctx->name) { dev_err(dev, "PMU type %d: Fail to get device name\n", type); return NULL; } inf = &ctx->inf; inf->type = type; inf->csr = dev_csr; inf->enable_mask = 1 << enable_bit; return ctx; } static int fdt_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { struct xgene_pmu_dev_ctx *ctx; struct device_node *np; for_each_child_of_node(pdev->dev.of_node, np) { if (!of_device_is_available(np)) continue; if (of_device_is_compatible(np, "apm,xgene-pmu-l3c")) ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_L3C); else if (of_device_is_compatible(np, "apm,xgene-pmu-iob")) ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_IOB); else if (of_device_is_compatible(np, "apm,xgene-pmu-mcb")) ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MCB); else if (of_device_is_compatible(np, "apm,xgene-pmu-mc")) ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MC); else ctx = NULL; if (!ctx) continue; if (xgene_pmu_dev_add(xgene_pmu, ctx)) { /* Can't add the PMU device, skip it */ devm_kfree(xgene_pmu->dev, ctx); continue; } switch (ctx->inf.type) { case PMU_TYPE_L3C: list_add(&ctx->next, &xgene_pmu->l3cpmus); break; case PMU_TYPE_IOB: list_add(&ctx->next, &xgene_pmu->iobpmus); break; case PMU_TYPE_IOB_SLOW: list_add(&ctx->next, &xgene_pmu->iobpmus); break; case PMU_TYPE_MCB: list_add(&ctx->next, &xgene_pmu->mcbpmus); break; case PMU_TYPE_MC: list_add(&ctx->next, &xgene_pmu->mcpmus); break; } } return 0; } static int xgene_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, struct platform_device *pdev) { if (has_acpi_companion(&pdev->dev)) return acpi_pmu_probe_pmu_dev(xgene_pmu, pdev); return fdt_pmu_probe_pmu_dev(xgene_pmu, pdev); } static const struct xgene_pmu_data xgene_pmu_data = { .id = PCP_PMU_V1, }; static const struct xgene_pmu_data xgene_pmu_v2_data = { .id = PCP_PMU_V2, }; static const struct xgene_pmu_ops xgene_pmu_ops = { .mask_int = xgene_pmu_mask_int, .unmask_int = xgene_pmu_unmask_int, .read_counter = xgene_pmu_read_counter32, .write_counter = xgene_pmu_write_counter32, .write_evttype = xgene_pmu_write_evttype, .write_agentmsk = xgene_pmu_write_agentmsk, .write_agent1msk = xgene_pmu_write_agent1msk, .enable_counter = xgene_pmu_enable_counter, .disable_counter = xgene_pmu_disable_counter, .enable_counter_int = xgene_pmu_enable_counter_int, .disable_counter_int = xgene_pmu_disable_counter_int, .reset_counters = xgene_pmu_reset_counters, .start_counters = xgene_pmu_start_counters, .stop_counters = xgene_pmu_stop_counters, }; static const struct xgene_pmu_ops xgene_pmu_v3_ops = { .mask_int = xgene_pmu_v3_mask_int, .unmask_int = xgene_pmu_v3_unmask_int, .read_counter = xgene_pmu_read_counter64, .write_counter = xgene_pmu_write_counter64, .write_evttype = xgene_pmu_write_evttype, .write_agentmsk = xgene_pmu_v3_write_agentmsk, .write_agent1msk = xgene_pmu_v3_write_agent1msk, .enable_counter = xgene_pmu_enable_counter, .disable_counter = xgene_pmu_disable_counter, .enable_counter_int = xgene_pmu_enable_counter_int, .disable_counter_int = xgene_pmu_disable_counter_int, .reset_counters = xgene_pmu_reset_counters, .start_counters = xgene_pmu_start_counters, .stop_counters = xgene_pmu_stop_counters, }; static const struct of_device_id xgene_pmu_of_match[] = { { .compatible = "apm,xgene-pmu", .data = &xgene_pmu_data }, { .compatible = "apm,xgene-pmu-v2", .data = &xgene_pmu_v2_data }, {}, }; MODULE_DEVICE_TABLE(of, xgene_pmu_of_match); #ifdef CONFIG_ACPI static const struct acpi_device_id xgene_pmu_acpi_match[] = { {"APMC0D5B", PCP_PMU_V1}, {"APMC0D5C", PCP_PMU_V2}, {"APMC0D83", PCP_PMU_V3}, {}, }; MODULE_DEVICE_TABLE(acpi, xgene_pmu_acpi_match); #endif static int xgene_pmu_online_cpu(unsigned int cpu, struct hlist_node *node) { struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu, node); if (cpumask_empty(&xgene_pmu->cpu)) cpumask_set_cpu(cpu, &xgene_pmu->cpu); /* Overflow interrupt also should use the same CPU */ WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu)); return 0; } static int xgene_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) { struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu, node); struct xgene_pmu_dev_ctx *ctx; unsigned int target; if (!cpumask_test_and_clear_cpu(cpu, &xgene_pmu->cpu)) return 0; target = cpumask_any_but(cpu_online_mask, cpu); if (target >= nr_cpu_ids) return 0; list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) { perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); } list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) { perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); } list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) { perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); } list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) { perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); } cpumask_set_cpu(target, &xgene_pmu->cpu); /* Overflow interrupt also should use the same CPU */ WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu)); return 0; } static int xgene_pmu_probe(struct platform_device *pdev) { const struct xgene_pmu_data *dev_data; const struct of_device_id *of_id; struct xgene_pmu *xgene_pmu; struct resource *res; int irq, rc; int version; /* Install a hook to update the reader CPU in case it goes offline */ rc = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, "CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE", xgene_pmu_online_cpu, xgene_pmu_offline_cpu); if (rc) return rc; xgene_pmu = devm_kzalloc(&pdev->dev, sizeof(*xgene_pmu), GFP_KERNEL); if (!xgene_pmu) return -ENOMEM; xgene_pmu->dev = &pdev->dev; platform_set_drvdata(pdev, xgene_pmu); version = -EINVAL; of_id = of_match_device(xgene_pmu_of_match, &pdev->dev); if (of_id) { dev_data = (const struct xgene_pmu_data *) of_id->data; version = dev_data->id; } #ifdef CONFIG_ACPI if (ACPI_COMPANION(&pdev->dev)) { const struct acpi_device_id *acpi_id; acpi_id = acpi_match_device(xgene_pmu_acpi_match, &pdev->dev); if (acpi_id) version = (int) acpi_id->driver_data; } #endif if (version < 0) return -ENODEV; if (version == PCP_PMU_V3) xgene_pmu->ops = &xgene_pmu_v3_ops; else xgene_pmu->ops = &xgene_pmu_ops; INIT_LIST_HEAD(&xgene_pmu->l3cpmus); INIT_LIST_HEAD(&xgene_pmu->iobpmus); INIT_LIST_HEAD(&xgene_pmu->mcbpmus); INIT_LIST_HEAD(&xgene_pmu->mcpmus); xgene_pmu->version = version; dev_info(&pdev->dev, "X-Gene PMU version %d\n", xgene_pmu->version); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); xgene_pmu->pcppmu_csr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(xgene_pmu->pcppmu_csr)) { dev_err(&pdev->dev, "ioremap failed for PCP PMU resource\n"); return PTR_ERR(xgene_pmu->pcppmu_csr); } irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "No IRQ resource\n"); return -EINVAL; } rc = devm_request_irq(&pdev->dev, irq, xgene_pmu_isr, IRQF_NOBALANCING | IRQF_NO_THREAD, dev_name(&pdev->dev), xgene_pmu); if (rc) { dev_err(&pdev->dev, "Could not request IRQ %d\n", irq); return rc; } xgene_pmu->irq = irq; raw_spin_lock_init(&xgene_pmu->lock); /* Check for active MCBs and MCUs */ rc = xgene_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); if (rc) { dev_warn(&pdev->dev, "Unknown MCB/MCU active status\n"); xgene_pmu->mcb_active_mask = 0x1; xgene_pmu->mc_active_mask = 0x1; } /* Add this instance to the list used by the hotplug callback */ rc = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, &xgene_pmu->node); if (rc) { dev_err(&pdev->dev, "Error %d registering hotplug", rc); return rc; } /* Walk through the tree for all PMU perf devices */ rc = xgene_pmu_probe_pmu_dev(xgene_pmu, pdev); if (rc) { dev_err(&pdev->dev, "No PMU perf devices found!\n"); goto out_unregister; } /* Enable interrupt */ xgene_pmu->ops->unmask_int(xgene_pmu); return 0; out_unregister: cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, &xgene_pmu->node); return rc; } static void xgene_pmu_dev_cleanup(struct xgene_pmu *xgene_pmu, struct list_head *pmus) { struct xgene_pmu_dev_ctx *ctx; list_for_each_entry(ctx, pmus, next) { perf_pmu_unregister(&ctx->pmu_dev->pmu); } } static int xgene_pmu_remove(struct platform_device *pdev) { struct xgene_pmu *xgene_pmu = dev_get_drvdata(&pdev->dev); xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->l3cpmus); xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->iobpmus); xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcbpmus); xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcpmus); cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, &xgene_pmu->node); return 0; } static struct platform_driver xgene_pmu_driver = { .probe = xgene_pmu_probe, .remove = xgene_pmu_remove, .driver = { .name = "xgene-pmu", .of_match_table = xgene_pmu_of_match, .acpi_match_table = ACPI_PTR(xgene_pmu_acpi_match), }, }; builtin_platform_driver(xgene_pmu_driver);
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