From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/platform/x86/intel/telemetry/debugfs.c | 961 +++++++++++++++++++++++++ 1 file changed, 961 insertions(+) create mode 100644 drivers/platform/x86/intel/telemetry/debugfs.c (limited to 'drivers/platform/x86/intel/telemetry/debugfs.c') diff --git a/drivers/platform/x86/intel/telemetry/debugfs.c b/drivers/platform/x86/intel/telemetry/debugfs.c new file mode 100644 index 000000000..1d4d0fbfd --- /dev/null +++ b/drivers/platform/x86/intel/telemetry/debugfs.c @@ -0,0 +1,961 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Intel SOC Telemetry debugfs Driver: Currently supports APL + * Copyright (c) 2015, Intel Corporation. + * All Rights Reserved. + * + * This file provides the debugfs interfaces for telemetry. + * /sys/kernel/debug/telemetry/pss_info: Shows Primary Control Sub-Sys Counters + * /sys/kernel/debug/telemetry/ioss_info: Shows IO Sub-System Counters + * /sys/kernel/debug/telemetry/soc_states: Shows SoC State + * /sys/kernel/debug/telemetry/pss_trace_verbosity: Read and Change Tracing + * Verbosity via firmware + * /sys/kernel/debug/telemetry/ioss_race_verbosity: Write and Change Tracing + * Verbosity via firmware + */ +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define DRIVER_NAME "telemetry_soc_debugfs" +#define DRIVER_VERSION "1.0.0" + +/* ApolloLake SoC Event-IDs */ +#define TELEM_APL_PSS_PSTATES_ID 0x2802 +#define TELEM_APL_PSS_IDLE_ID 0x2806 +#define TELEM_APL_PCS_IDLE_BLOCKED_ID 0x2C00 +#define TELEM_APL_PCS_S0IX_BLOCKED_ID 0x2C01 +#define TELEM_APL_PSS_WAKEUP_ID 0x2C02 +#define TELEM_APL_PSS_LTR_BLOCKING_ID 0x2C03 + +#define TELEM_APL_S0IX_TOTAL_OCC_ID 0x4000 +#define TELEM_APL_S0IX_SHLW_OCC_ID 0x4001 +#define TELEM_APL_S0IX_DEEP_OCC_ID 0x4002 +#define TELEM_APL_S0IX_TOTAL_RES_ID 0x4800 +#define TELEM_APL_S0IX_SHLW_RES_ID 0x4801 +#define TELEM_APL_S0IX_DEEP_RES_ID 0x4802 +#define TELEM_APL_D0IX_ID 0x581A +#define TELEM_APL_D3_ID 0x5819 +#define TELEM_APL_PG_ID 0x5818 + +#define TELEM_INFO_SRAMEVTS_MASK 0xFF00 +#define TELEM_INFO_SRAMEVTS_SHIFT 0x8 +#define TELEM_SSRAM_READ_TIMEOUT 10 + +#define TELEM_MASK_BIT 1 +#define TELEM_MASK_BYTE 0xFF +#define BYTES_PER_LONG 8 +#define TELEM_APL_MASK_PCS_STATE 0xF + +/* Max events in bitmap to check for */ +#define TELEM_PSS_IDLE_EVTS 25 +#define TELEM_PSS_IDLE_BLOCKED_EVTS 20 +#define TELEM_PSS_S0IX_BLOCKED_EVTS 20 +#define TELEM_PSS_S0IX_WAKEUP_EVTS 20 +#define TELEM_PSS_LTR_BLOCKING_EVTS 20 +#define TELEM_IOSS_DX_D0IX_EVTS 25 +#define TELEM_IOSS_PG_EVTS 30 + +#define TELEM_CHECK_AND_PARSE_EVTS(EVTID, EVTNUM, BUF, EVTLOG, EVTDAT, MASK) { \ + if (evtlog[index].telem_evtid == (EVTID)) { \ + for (idx = 0; idx < (EVTNUM); idx++) \ + (BUF)[idx] = ((EVTLOG) >> (EVTDAT)[idx].bit_pos) & \ + (MASK); \ + continue; \ + } \ +} + +#define TELEM_CHECK_AND_PARSE_CTRS(EVTID, CTR) { \ + if (evtlog[index].telem_evtid == (EVTID)) { \ + (CTR) = evtlog[index].telem_evtlog; \ + continue; \ + } \ +} + +static u8 suspend_prep_ok; +static u32 suspend_shlw_ctr_temp, suspend_deep_ctr_temp; +static u64 suspend_shlw_res_temp, suspend_deep_res_temp; + +struct telemetry_susp_stats { + u32 shlw_ctr; + u32 deep_ctr; + u64 shlw_res; + u64 deep_res; +}; + +/* Bitmap definitions for default counters in APL */ +struct telem_pss_idle_stateinfo { + const char *name; + u32 bit_pos; +}; + +static struct telem_pss_idle_stateinfo telem_apl_pss_idle_data[] = { + {"IA_CORE0_C1E", 0}, + {"IA_CORE1_C1E", 1}, + {"IA_CORE2_C1E", 2}, + {"IA_CORE3_C1E", 3}, + {"IA_CORE0_C6", 16}, + {"IA_CORE1_C6", 17}, + {"IA_CORE2_C6", 18}, + {"IA_CORE3_C6", 19}, + {"IA_MODULE0_C7", 32}, + {"IA_MODULE1_C7", 33}, + {"GT_RC6", 40}, + {"IUNIT_PROCESSING_IDLE", 41}, + {"FAR_MEM_IDLE", 43}, + {"DISPLAY_IDLE", 44}, + {"IUNIT_INPUT_SYSTEM_IDLE", 45}, + {"PCS_STATUS", 60}, +}; + +struct telem_pcs_blkd_info { + const char *name; + u32 bit_pos; +}; + +static struct telem_pcs_blkd_info telem_apl_pcs_idle_blkd_data[] = { + {"COMPUTE", 0}, + {"MISC", 8}, + {"MODULE_ACTIONS_PENDING", 16}, + {"LTR", 24}, + {"DISPLAY_WAKE", 32}, + {"ISP_WAKE", 40}, + {"PSF0_ACTIVE", 48}, +}; + +static struct telem_pcs_blkd_info telem_apl_pcs_s0ix_blkd_data[] = { + {"LTR", 0}, + {"IRTL", 8}, + {"WAKE_DEADLINE_PENDING", 16}, + {"DISPLAY", 24}, + {"ISP", 32}, + {"CORE", 40}, + {"PMC", 48}, + {"MISC", 56}, +}; + +struct telem_pss_ltr_info { + const char *name; + u32 bit_pos; +}; + +static struct telem_pss_ltr_info telem_apl_pss_ltr_data[] = { + {"CORE_ACTIVE", 0}, + {"MEM_UP", 8}, + {"DFX", 16}, + {"DFX_FORCE_LTR", 24}, + {"DISPLAY", 32}, + {"ISP", 40}, + {"SOUTH", 48}, +}; + +struct telem_pss_wakeup_info { + const char *name; + u32 bit_pos; +}; + +static struct telem_pss_wakeup_info telem_apl_pss_wakeup[] = { + {"IP_IDLE", 0}, + {"DISPLAY_WAKE", 8}, + {"VOLTAGE_REG_INT", 16}, + {"DROWSY_TIMER (HOTPLUG)", 24}, + {"CORE_WAKE", 32}, + {"MISC_S0IX", 40}, + {"MISC_ABORT", 56}, +}; + +struct telem_ioss_d0ix_stateinfo { + const char *name; + u32 bit_pos; +}; + +static struct telem_ioss_d0ix_stateinfo telem_apl_ioss_d0ix_data[] = { + {"CSE", 0}, + {"SCC2", 1}, + {"GMM", 2}, + {"XDCI", 3}, + {"XHCI", 4}, + {"ISH", 5}, + {"AVS", 6}, + {"PCIE0P1", 7}, + {"PECI0P0", 8}, + {"LPSS", 9}, + {"SCC", 10}, + {"PWM", 11}, + {"PCIE1_P3", 12}, + {"PCIE1_P2", 13}, + {"PCIE1_P1", 14}, + {"PCIE1_P0", 15}, + {"CNV", 16}, + {"SATA", 17}, + {"PRTC", 18}, +}; + +struct telem_ioss_pg_info { + const char *name; + u32 bit_pos; +}; + +static struct telem_ioss_pg_info telem_apl_ioss_pg_data[] = { + {"LPSS", 0}, + {"SCC", 1}, + {"P2SB", 2}, + {"SCC2", 3}, + {"GMM", 4}, + {"PCIE0", 5}, + {"XDCI", 6}, + {"xHCI", 7}, + {"CSE", 8}, + {"SPI", 9}, + {"AVSPGD4", 10}, + {"AVSPGD3", 11}, + {"AVSPGD2", 12}, + {"AVSPGD1", 13}, + {"ISH", 14}, + {"EXI", 15}, + {"NPKVRC", 16}, + {"NPKVNN", 17}, + {"CUNIT", 18}, + {"FUSE_CTRL", 19}, + {"PCIE1", 20}, + {"CNV", 21}, + {"LPC", 22}, + {"SATA", 23}, + {"SMB", 24}, + {"PRTC", 25}, +}; + +struct telemetry_debugfs_conf { + struct telemetry_susp_stats suspend_stats; + struct dentry *telemetry_dbg_dir; + + /* Bitmap Data */ + struct telem_ioss_d0ix_stateinfo *ioss_d0ix_data; + struct telem_pss_idle_stateinfo *pss_idle_data; + struct telem_pcs_blkd_info *pcs_idle_blkd_data; + struct telem_pcs_blkd_info *pcs_s0ix_blkd_data; + struct telem_pss_wakeup_info *pss_wakeup; + struct telem_pss_ltr_info *pss_ltr_data; + struct telem_ioss_pg_info *ioss_pg_data; + u8 pcs_idle_blkd_evts; + u8 pcs_s0ix_blkd_evts; + u8 pss_wakeup_evts; + u8 pss_idle_evts; + u8 pss_ltr_evts; + u8 ioss_d0ix_evts; + u8 ioss_pg_evts; + + /* IDs */ + u16 pss_ltr_blocking_id; + u16 pcs_idle_blkd_id; + u16 pcs_s0ix_blkd_id; + u16 s0ix_total_occ_id; + u16 s0ix_shlw_occ_id; + u16 s0ix_deep_occ_id; + u16 s0ix_total_res_id; + u16 s0ix_shlw_res_id; + u16 s0ix_deep_res_id; + u16 pss_wakeup_id; + u16 ioss_d0ix_id; + u16 pstates_id; + u16 pss_idle_id; + u16 ioss_d3_id; + u16 ioss_pg_id; +}; + +static struct telemetry_debugfs_conf *debugfs_conf; + +static struct telemetry_debugfs_conf telem_apl_debugfs_conf = { + .pss_idle_data = telem_apl_pss_idle_data, + .pcs_idle_blkd_data = telem_apl_pcs_idle_blkd_data, + .pcs_s0ix_blkd_data = telem_apl_pcs_s0ix_blkd_data, + .pss_ltr_data = telem_apl_pss_ltr_data, + .pss_wakeup = telem_apl_pss_wakeup, + .ioss_d0ix_data = telem_apl_ioss_d0ix_data, + .ioss_pg_data = telem_apl_ioss_pg_data, + + .pss_idle_evts = ARRAY_SIZE(telem_apl_pss_idle_data), + .pcs_idle_blkd_evts = ARRAY_SIZE(telem_apl_pcs_idle_blkd_data), + .pcs_s0ix_blkd_evts = ARRAY_SIZE(telem_apl_pcs_s0ix_blkd_data), + .pss_ltr_evts = ARRAY_SIZE(telem_apl_pss_ltr_data), + .pss_wakeup_evts = ARRAY_SIZE(telem_apl_pss_wakeup), + .ioss_d0ix_evts = ARRAY_SIZE(telem_apl_ioss_d0ix_data), + .ioss_pg_evts = ARRAY_SIZE(telem_apl_ioss_pg_data), + + .pstates_id = TELEM_APL_PSS_PSTATES_ID, + .pss_idle_id = TELEM_APL_PSS_IDLE_ID, + .pcs_idle_blkd_id = TELEM_APL_PCS_IDLE_BLOCKED_ID, + .pcs_s0ix_blkd_id = TELEM_APL_PCS_S0IX_BLOCKED_ID, + .pss_wakeup_id = TELEM_APL_PSS_WAKEUP_ID, + .pss_ltr_blocking_id = TELEM_APL_PSS_LTR_BLOCKING_ID, + .s0ix_total_occ_id = TELEM_APL_S0IX_TOTAL_OCC_ID, + .s0ix_shlw_occ_id = TELEM_APL_S0IX_SHLW_OCC_ID, + .s0ix_deep_occ_id = TELEM_APL_S0IX_DEEP_OCC_ID, + .s0ix_total_res_id = TELEM_APL_S0IX_TOTAL_RES_ID, + .s0ix_shlw_res_id = TELEM_APL_S0IX_SHLW_RES_ID, + .s0ix_deep_res_id = TELEM_APL_S0IX_DEEP_RES_ID, + .ioss_d0ix_id = TELEM_APL_D0IX_ID, + .ioss_d3_id = TELEM_APL_D3_ID, + .ioss_pg_id = TELEM_APL_PG_ID, +}; + +static const struct x86_cpu_id telemetry_debugfs_cpu_ids[] = { + X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT, &telem_apl_debugfs_conf), + X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT_PLUS, &telem_apl_debugfs_conf), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, telemetry_debugfs_cpu_ids); + +static int telemetry_debugfs_check_evts(void) +{ + if ((debugfs_conf->pss_idle_evts > TELEM_PSS_IDLE_EVTS) || + (debugfs_conf->pcs_idle_blkd_evts > TELEM_PSS_IDLE_BLOCKED_EVTS) || + (debugfs_conf->pcs_s0ix_blkd_evts > TELEM_PSS_S0IX_BLOCKED_EVTS) || + (debugfs_conf->pss_ltr_evts > TELEM_PSS_LTR_BLOCKING_EVTS) || + (debugfs_conf->pss_wakeup_evts > TELEM_PSS_S0IX_WAKEUP_EVTS) || + (debugfs_conf->ioss_d0ix_evts > TELEM_IOSS_DX_D0IX_EVTS) || + (debugfs_conf->ioss_pg_evts > TELEM_IOSS_PG_EVTS)) + return -EINVAL; + + return 0; +} + +static int telem_pss_states_show(struct seq_file *s, void *unused) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + struct telemetry_debugfs_conf *conf = debugfs_conf; + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; + u32 pcs_idle_blkd[TELEM_PSS_IDLE_BLOCKED_EVTS], + pcs_s0ix_blkd[TELEM_PSS_S0IX_BLOCKED_EVTS], + pss_s0ix_wakeup[TELEM_PSS_S0IX_WAKEUP_EVTS], + pss_ltr_blkd[TELEM_PSS_LTR_BLOCKING_EVTS], + pss_idle[TELEM_PSS_IDLE_EVTS]; + int index, idx, ret, err = 0; + u64 pstates = 0; + + ret = telemetry_read_eventlog(TELEM_PSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) + return ret; + + err = telemetry_get_evtname(TELEM_PSS, name, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (err < 0) + return err; + + seq_puts(s, "\n----------------------------------------------------\n"); + seq_puts(s, "\tPSS TELEM EVENTLOG (Residency = field/19.2 us\n"); + seq_puts(s, "----------------------------------------------------\n"); + for (index = 0; index < ret; index++) { + seq_printf(s, "%-32s %llu\n", + name[index], evtlog[index].telem_evtlog); + + /* Fetch PSS IDLE State */ + if (evtlog[index].telem_evtid == conf->pss_idle_id) { + pss_idle[conf->pss_idle_evts - 1] = + (evtlog[index].telem_evtlog >> + conf->pss_idle_data[conf->pss_idle_evts - 1].bit_pos) & + TELEM_APL_MASK_PCS_STATE; + } + + TELEM_CHECK_AND_PARSE_EVTS(conf->pss_idle_id, + conf->pss_idle_evts - 1, + pss_idle, evtlog[index].telem_evtlog, + conf->pss_idle_data, TELEM_MASK_BIT); + + TELEM_CHECK_AND_PARSE_EVTS(conf->pcs_idle_blkd_id, + conf->pcs_idle_blkd_evts, + pcs_idle_blkd, + evtlog[index].telem_evtlog, + conf->pcs_idle_blkd_data, + TELEM_MASK_BYTE); + + TELEM_CHECK_AND_PARSE_EVTS(conf->pcs_s0ix_blkd_id, + conf->pcs_s0ix_blkd_evts, + pcs_s0ix_blkd, + evtlog[index].telem_evtlog, + conf->pcs_s0ix_blkd_data, + TELEM_MASK_BYTE); + + TELEM_CHECK_AND_PARSE_EVTS(conf->pss_wakeup_id, + conf->pss_wakeup_evts, + pss_s0ix_wakeup, + evtlog[index].telem_evtlog, + conf->pss_wakeup, TELEM_MASK_BYTE); + + TELEM_CHECK_AND_PARSE_EVTS(conf->pss_ltr_blocking_id, + conf->pss_ltr_evts, pss_ltr_blkd, + evtlog[index].telem_evtlog, + conf->pss_ltr_data, TELEM_MASK_BYTE); + + if (evtlog[index].telem_evtid == debugfs_conf->pstates_id) + pstates = evtlog[index].telem_evtlog; + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "PStates\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Domain\t\t\t\tFreq(Mhz)\n"); + seq_printf(s, " IA\t\t\t\t %llu\n GT\t\t\t\t %llu\n", + (pstates & TELEM_MASK_BYTE)*100, + ((pstates >> 8) & TELEM_MASK_BYTE)*50/3); + + seq_printf(s, " IUNIT\t\t\t\t %llu\n SA\t\t\t\t %llu\n", + ((pstates >> 16) & TELEM_MASK_BYTE)*25, + ((pstates >> 24) & TELEM_MASK_BYTE)*50/3); + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "PSS IDLE Status\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Device\t\t\t\t\tIDLE\n"); + for (index = 0; index < debugfs_conf->pss_idle_evts; index++) { + seq_printf(s, "%-32s\t%u\n", + debugfs_conf->pss_idle_data[index].name, + pss_idle[index]); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "PSS Idle blkd Status (~1ms saturating bucket)\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Blocker\t\t\t\t\tCount\n"); + for (index = 0; index < debugfs_conf->pcs_idle_blkd_evts; index++) { + seq_printf(s, "%-32s\t%u\n", + debugfs_conf->pcs_idle_blkd_data[index].name, + pcs_idle_blkd[index]); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "PSS S0ix blkd Status (~1ms saturating bucket)\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Blocker\t\t\t\t\tCount\n"); + for (index = 0; index < debugfs_conf->pcs_s0ix_blkd_evts; index++) { + seq_printf(s, "%-32s\t%u\n", + debugfs_conf->pcs_s0ix_blkd_data[index].name, + pcs_s0ix_blkd[index]); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "LTR Blocking Status (~1ms saturating bucket)\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Blocker\t\t\t\t\tCount\n"); + for (index = 0; index < debugfs_conf->pss_ltr_evts; index++) { + seq_printf(s, "%-32s\t%u\n", + debugfs_conf->pss_ltr_data[index].name, + pss_s0ix_wakeup[index]); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "Wakes Status (~1ms saturating bucket)\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Wakes\t\t\t\t\tCount\n"); + for (index = 0; index < debugfs_conf->pss_wakeup_evts; index++) { + seq_printf(s, "%-32s\t%u\n", + debugfs_conf->pss_wakeup[index].name, + pss_ltr_blkd[index]); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(telem_pss_states); + +static int telem_ioss_states_show(struct seq_file *s, void *unused) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; + int index, ret, err; + + ret = telemetry_read_eventlog(TELEM_IOSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) + return ret; + + err = telemetry_get_evtname(TELEM_IOSS, name, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (err < 0) + return err; + + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "\tI0SS TELEMETRY EVENTLOG\n"); + seq_puts(s, "--------------------------------------\n"); + for (index = 0; index < ret; index++) { + seq_printf(s, "%-32s 0x%llx\n", + name[index], evtlog[index].telem_evtlog); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(telem_ioss_states); + +static int telem_soc_states_show(struct seq_file *s, void *unused) +{ + u32 d3_sts[TELEM_IOSS_DX_D0IX_EVTS], d0ix_sts[TELEM_IOSS_DX_D0IX_EVTS]; + u32 pg_sts[TELEM_IOSS_PG_EVTS], pss_idle[TELEM_PSS_IDLE_EVTS]; + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + u32 s0ix_total_ctr = 0, s0ix_shlw_ctr = 0, s0ix_deep_ctr = 0; + u64 s0ix_total_res = 0, s0ix_shlw_res = 0, s0ix_deep_res = 0; + struct telemetry_debugfs_conf *conf = debugfs_conf; + struct pci_dev *dev = NULL; + int index, idx, ret; + u32 d3_state; + u16 pmcsr; + + ret = telemetry_read_eventlog(TELEM_IOSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) + return ret; + + for (index = 0; index < ret; index++) { + TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_d3_id, + conf->ioss_d0ix_evts, + d3_sts, evtlog[index].telem_evtlog, + conf->ioss_d0ix_data, + TELEM_MASK_BIT); + + TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_pg_id, conf->ioss_pg_evts, + pg_sts, evtlog[index].telem_evtlog, + conf->ioss_pg_data, TELEM_MASK_BIT); + + TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_d0ix_id, + conf->ioss_d0ix_evts, + d0ix_sts, evtlog[index].telem_evtlog, + conf->ioss_d0ix_data, + TELEM_MASK_BIT); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_total_occ_id, + s0ix_total_ctr); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id, + s0ix_shlw_ctr); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id, + s0ix_deep_ctr); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_total_res_id, + s0ix_total_res); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id, + s0ix_shlw_res); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id, + s0ix_deep_res); + } + + seq_puts(s, "\n---------------------------------------------------\n"); + seq_puts(s, "S0IX Type\t\t\t Occurrence\t\t Residency(us)\n"); + seq_puts(s, "---------------------------------------------------\n"); + + seq_printf(s, "S0IX Shallow\t\t\t %10u\t %10llu\n", + s0ix_shlw_ctr - + conf->suspend_stats.shlw_ctr, + (u64)((s0ix_shlw_res - + conf->suspend_stats.shlw_res)*10/192)); + + seq_printf(s, "S0IX Deep\t\t\t %10u\t %10llu\n", + s0ix_deep_ctr - + conf->suspend_stats.deep_ctr, + (u64)((s0ix_deep_res - + conf->suspend_stats.deep_res)*10/192)); + + seq_printf(s, "Suspend(With S0ixShallow)\t %10u\t %10llu\n", + conf->suspend_stats.shlw_ctr, + (u64)(conf->suspend_stats.shlw_res*10)/192); + + seq_printf(s, "Suspend(With S0ixDeep)\t\t %10u\t %10llu\n", + conf->suspend_stats.deep_ctr, + (u64)(conf->suspend_stats.deep_res*10)/192); + + seq_printf(s, "TOTAL S0IX\t\t\t %10u\t %10llu\n", s0ix_total_ctr, + (u64)(s0ix_total_res*10/192)); + seq_puts(s, "\n-------------------------------------------------\n"); + seq_puts(s, "\t\tDEVICE STATES\n"); + seq_puts(s, "-------------------------------------------------\n"); + + for_each_pci_dev(dev) { + pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); + d3_state = ((pmcsr & PCI_PM_CTRL_STATE_MASK) == + (__force int)PCI_D3hot) ? 1 : 0; + + seq_printf(s, "pci %04x %04X %s %20.20s: ", + dev->vendor, dev->device, dev_name(&dev->dev), + dev_driver_string(&dev->dev)); + seq_printf(s, " d3:%x\n", d3_state); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "D3/D0i3 Status\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Block\t\t D3\t D0i3\n"); + for (index = 0; index < conf->ioss_d0ix_evts; index++) { + seq_printf(s, "%-10s\t %u\t %u\n", + conf->ioss_d0ix_data[index].name, + d3_sts[index], d0ix_sts[index]); + } + + seq_puts(s, "\n--------------------------------------\n"); + seq_puts(s, "South Complex PowerGate Status\n"); + seq_puts(s, "--------------------------------------\n"); + seq_puts(s, "Device\t\t PG\n"); + for (index = 0; index < conf->ioss_pg_evts; index++) { + seq_printf(s, "%-10s\t %u\n", + conf->ioss_pg_data[index].name, + pg_sts[index]); + } + + evtlog->telem_evtid = conf->pss_idle_id; + ret = telemetry_read_events(TELEM_PSS, evtlog, 1); + if (ret < 0) + return ret; + + seq_puts(s, "\n-----------------------------------------\n"); + seq_puts(s, "North Idle Status\n"); + seq_puts(s, "-----------------------------------------\n"); + for (idx = 0; idx < conf->pss_idle_evts - 1; idx++) { + pss_idle[idx] = (evtlog->telem_evtlog >> + conf->pss_idle_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + + pss_idle[idx] = (evtlog->telem_evtlog >> + conf->pss_idle_data[idx].bit_pos) & + TELEM_APL_MASK_PCS_STATE; + + for (index = 0; index < conf->pss_idle_evts; index++) { + seq_printf(s, "%-30s %u\n", + conf->pss_idle_data[index].name, + pss_idle[index]); + } + + seq_puts(s, "\nPCS_STATUS Code\n"); + seq_puts(s, "0:C0 1:C1 2:C1_DN_WT_DEV 3:C2 4:C2_WT_DE_MEM_UP\n"); + seq_puts(s, "5:C2_WT_DE_MEM_DOWN 6:C2_UP_WT_DEV 7:C2_DN 8:C2_VOA\n"); + seq_puts(s, "9:C2_VOA_UP 10:S0IX_PRE 11:S0IX\n"); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(telem_soc_states); + +static int telem_s0ix_res_get(void *data, u64 *val) +{ + struct telemetry_plt_config *plt_config = telemetry_get_pltdata(); + u64 s0ix_total_res; + int ret; + + ret = intel_pmc_s0ix_counter_read(plt_config->pmc, &s0ix_total_res); + if (ret) { + pr_err("Failed to read S0ix residency"); + return ret; + } + + *val = s0ix_total_res; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(telem_s0ix_fops, telem_s0ix_res_get, NULL, "%llu\n"); + +static int telem_pss_trc_verb_show(struct seq_file *s, void *unused) +{ + u32 verbosity; + int err; + + err = telemetry_get_trace_verbosity(TELEM_PSS, &verbosity); + if (err) { + pr_err("Get PSS Trace Verbosity Failed with Error %d\n", err); + return -EFAULT; + } + + seq_printf(s, "PSS Trace Verbosity %u\n", verbosity); + return 0; +} + +static ssize_t telem_pss_trc_verb_write(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + u32 verbosity; + int err; + + err = kstrtou32_from_user(userbuf, count, 0, &verbosity); + if (err) + return err; + + err = telemetry_set_trace_verbosity(TELEM_PSS, verbosity); + if (err) { + pr_err("Changing PSS Trace Verbosity Failed. Error %d\n", err); + return err; + } + + return count; +} + +static int telem_pss_trc_verb_open(struct inode *inode, struct file *file) +{ + return single_open(file, telem_pss_trc_verb_show, inode->i_private); +} + +static const struct file_operations telem_pss_trc_verb_ops = { + .open = telem_pss_trc_verb_open, + .read = seq_read, + .write = telem_pss_trc_verb_write, + .llseek = seq_lseek, + .release = single_release, +}; + +static int telem_ioss_trc_verb_show(struct seq_file *s, void *unused) +{ + u32 verbosity; + int err; + + err = telemetry_get_trace_verbosity(TELEM_IOSS, &verbosity); + if (err) { + pr_err("Get IOSS Trace Verbosity Failed with Error %d\n", err); + return -EFAULT; + } + + seq_printf(s, "IOSS Trace Verbosity %u\n", verbosity); + return 0; +} + +static ssize_t telem_ioss_trc_verb_write(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + u32 verbosity; + int err; + + err = kstrtou32_from_user(userbuf, count, 0, &verbosity); + if (err) + return err; + + err = telemetry_set_trace_verbosity(TELEM_IOSS, verbosity); + if (err) { + pr_err("Changing IOSS Trace Verbosity Failed. Error %d\n", err); + return err; + } + + return count; +} + +static int telem_ioss_trc_verb_open(struct inode *inode, struct file *file) +{ + return single_open(file, telem_ioss_trc_verb_show, inode->i_private); +} + +static const struct file_operations telem_ioss_trc_verb_ops = { + .open = telem_ioss_trc_verb_open, + .read = seq_read, + .write = telem_ioss_trc_verb_write, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pm_suspend_prep_cb(void) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + struct telemetry_debugfs_conf *conf = debugfs_conf; + int ret, index; + + ret = telemetry_raw_read_eventlog(TELEM_IOSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) { + suspend_prep_ok = 0; + goto out; + } + + for (index = 0; index < ret; index++) { + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id, + suspend_shlw_ctr_temp); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id, + suspend_deep_ctr_temp); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id, + suspend_shlw_res_temp); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id, + suspend_deep_res_temp); + } + suspend_prep_ok = 1; +out: + return NOTIFY_OK; +} + +static int pm_suspend_exit_cb(void) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + static u32 suspend_shlw_ctr_exit, suspend_deep_ctr_exit; + static u64 suspend_shlw_res_exit, suspend_deep_res_exit; + struct telemetry_debugfs_conf *conf = debugfs_conf; + int ret, index; + + if (!suspend_prep_ok) + goto out; + + ret = telemetry_raw_read_eventlog(TELEM_IOSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) + goto out; + + for (index = 0; index < ret; index++) { + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id, + suspend_shlw_ctr_exit); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id, + suspend_deep_ctr_exit); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id, + suspend_shlw_res_exit); + + TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id, + suspend_deep_res_exit); + } + + if ((suspend_shlw_ctr_exit < suspend_shlw_ctr_temp) || + (suspend_deep_ctr_exit < suspend_deep_ctr_temp) || + (suspend_shlw_res_exit < suspend_shlw_res_temp) || + (suspend_deep_res_exit < suspend_deep_res_temp)) { + pr_err("Wrong s0ix counters detected\n"); + goto out; + } + + /* + * Due to some design limitations in the firmware, sometimes the + * counters do not get updated by the time we reach here. As a + * workaround, we try to see if this was a genuine case of sleep + * failure or not by cross-checking from PMC GCR registers directly. + */ + if (suspend_shlw_ctr_exit == suspend_shlw_ctr_temp && + suspend_deep_ctr_exit == suspend_deep_ctr_temp) { + struct telemetry_plt_config *plt_config = telemetry_get_pltdata(); + struct intel_pmc_dev *pmc = plt_config->pmc; + + ret = intel_pmc_gcr_read64(pmc, PMC_GCR_TELEM_SHLW_S0IX_REG, + &suspend_shlw_res_exit); + if (ret < 0) + goto out; + + ret = intel_pmc_gcr_read64(pmc, PMC_GCR_TELEM_DEEP_S0IX_REG, + &suspend_deep_res_exit); + if (ret < 0) + goto out; + + if (suspend_shlw_res_exit > suspend_shlw_res_temp) + suspend_shlw_ctr_exit++; + + if (suspend_deep_res_exit > suspend_deep_res_temp) + suspend_deep_ctr_exit++; + } + + suspend_shlw_ctr_exit -= suspend_shlw_ctr_temp; + suspend_deep_ctr_exit -= suspend_deep_ctr_temp; + suspend_shlw_res_exit -= suspend_shlw_res_temp; + suspend_deep_res_exit -= suspend_deep_res_temp; + + if (suspend_shlw_ctr_exit != 0) { + conf->suspend_stats.shlw_ctr += + suspend_shlw_ctr_exit; + + conf->suspend_stats.shlw_res += + suspend_shlw_res_exit; + } + + if (suspend_deep_ctr_exit != 0) { + conf->suspend_stats.deep_ctr += + suspend_deep_ctr_exit; + + conf->suspend_stats.deep_res += + suspend_deep_res_exit; + } + +out: + suspend_prep_ok = 0; + return NOTIFY_OK; +} + +static int pm_notification(struct notifier_block *this, + unsigned long event, void *ptr) +{ + switch (event) { + case PM_SUSPEND_PREPARE: + return pm_suspend_prep_cb(); + case PM_POST_SUSPEND: + return pm_suspend_exit_cb(); + } + + return NOTIFY_DONE; +} + +static struct notifier_block pm_notifier = { + .notifier_call = pm_notification, +}; + +static int __init telemetry_debugfs_init(void) +{ + const struct x86_cpu_id *id; + int err; + struct dentry *dir; + + /* Only APL supported for now */ + id = x86_match_cpu(telemetry_debugfs_cpu_ids); + if (!id) + return -ENODEV; + + debugfs_conf = (struct telemetry_debugfs_conf *)id->driver_data; + + if (!telemetry_get_pltdata()) { + pr_info("Invalid pltconfig, ensure IPC1 device is enabled in BIOS\n"); + return -ENODEV; + } + + err = telemetry_debugfs_check_evts(); + if (err < 0) { + pr_info("telemetry_debugfs_check_evts failed\n"); + return -EINVAL; + } + + register_pm_notifier(&pm_notifier); + + dir = debugfs_create_dir("telemetry", NULL); + debugfs_conf->telemetry_dbg_dir = dir; + + debugfs_create_file("pss_info", S_IFREG | S_IRUGO, dir, NULL, + &telem_pss_states_fops); + debugfs_create_file("ioss_info", S_IFREG | S_IRUGO, dir, NULL, + &telem_ioss_states_fops); + debugfs_create_file("soc_states", S_IFREG | S_IRUGO, dir, NULL, + &telem_soc_states_fops); + debugfs_create_file("s0ix_residency_usec", S_IFREG | S_IRUGO, dir, NULL, + &telem_s0ix_fops); + debugfs_create_file("pss_trace_verbosity", S_IFREG | S_IRUGO, dir, NULL, + &telem_pss_trc_verb_ops); + debugfs_create_file("ioss_trace_verbosity", S_IFREG | S_IRUGO, dir, + NULL, &telem_ioss_trc_verb_ops); + return 0; +} + +static void __exit telemetry_debugfs_exit(void) +{ + debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir); + debugfs_conf->telemetry_dbg_dir = NULL; + unregister_pm_notifier(&pm_notifier); +} + +late_initcall(telemetry_debugfs_init); +module_exit(telemetry_debugfs_exit); + +MODULE_AUTHOR("Souvik Kumar Chakravarty "); +MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface"); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3