| Message ID | 1442551519-24878-1-git-send-email-souvik.k.chakravarty@intel.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
On Fri, Sep 18, 2015 at 10:15:19AM +0530, Souvik Kumar Chakravarty wrote: > This implements debugfs interfaces for reading the telemetry > samples from SSRAM and configuring firmware trace verbosity. > Interface created under /sys/kernel/debug/telemetry > soc_states: SoC Device and Low Power States > pss_info: Info from the Primary SubSystem > ioss_info: Info from IO SubSusytem > pss_trace_verbosity: Read/Modify PSS F/W trace verbosity > ioss_trace_verbosity: Read/Modify IOSS F/W trace verbosity. > > Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> > --- > drivers/platform/x86/intel_telemetry_debugfs.c | 1080 ++++++++++++++++++++++++ > 1 file changed, 1080 insertions(+) > create mode 100644 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 0000000..d69e659 > --- /dev/null > +++ b/drivers/platform/x86/intel_telemetry_debugfs.c > @@ -0,0 +1,1080 @@ > +/* > + * Intel SOC Telemetry debugfs Driver: Currently supports APL > + * Copyright (c) 2015, Intel Corporation. > + * > + * This program is free software; you can redistribute it and/or modify it > + * under the terms and conditions of the GNU General Public License, > + * version 2, as published by the Free Software Foundation. > + * > + * This program is distributed in the hope 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. > + * > + * 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 <linux/module.h> > +#include <linux/init.h> > +#include <linux/device.h> > +#include <linux/debugfs.h> > +#include <linux/seq_file.h> > +#include <linux/io.h> > +#include <linux/uaccess.h> > +#include <linux/pci.h> > +#include <linux/suspend.h> > + > +#include <asm/cpu_device_id.h> > +#include <asm/intel_pmc_ipc.h> > +#include <asm/intel_punit_ipc.h> > +#include <asm/intel_telemetry.h> > + > +#define DRIVER_NAME "telemetry_soc_debugfs" ^ no tab here > +#define DRIVER_VERSION "1.0.0" > + > +#define TELEM_INFO_SRAMEVTS_MASK 0xFF00 > +#define TELEM_INFO_SRAMEVTS_SHIFT 0x8 > +#define TELEM_SSRAM_READ_TIMEOUT 10 > + > +#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_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_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 > + Would it make sense to group all the APL defines under a heading: /* Apollo Lake SoC Support */ or similar? I presume the PSS and IOSS are not APL specific? > +#define TELEM_MASK_BIT 1 > +#define TELEM_MASK_BYTE 0xFF > +#define BYTES_PER_LONG 8 > +#define TELEM_APL_MASK_PCS_STATE 0xF > + > +#define TELEM_EVT_LEN(x) (sizeof(x)/sizeof((x)[0])) > + > +#define TELEM_DEBUGFS_CPU(model, data) \ > + { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&data} > + > +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 suspend_shlw_ctr; > + u32 suspend_deep_ctr; > + u32 suspend_shlw_swake_ctr; > + u32 suspend_deep_swake_ctr; > + u64 suspend_shlw_res; > + u64 suspend_deep_res; > + u64 suspend_shlw_swake_res; > + u64 suspend_deep_swake_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}, Please be consistent with tab and space usage above. > +}; > + > +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}, > +}; > + Please be consistent with tab and space usage above. > + > +struct telemetry_debugfs_conf { > + struct dentry *telemetry_dbg_dir; > + > + /* Bitmap 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_ltr_info *pss_ltr_data; > + struct telem_pss_wakeup_info *pss_wakeup; > + struct telem_ioss_d0ix_stateinfo *ioss_d0ix_data; > + struct telem_ioss_pg_info *ioss_pg_data; > + u8 pss_idle_evts; > + u8 pcs_idle_blkd_evts; > + u8 pcs_s0ix_blkd_evts; > + u8 pss_ltr_evts; > + u8 pss_wakeup_evts; > + u8 ioss_d0ix_evts; > + u8 ioss_pg_evts; > + > + /* IDs */ > + u16 pstates_id; > + u16 pss_idle_id; > + u16 pcs_idle_blkd_id; > + u16 pcs_s0ix_blkd_id; > + u16 pss_wakeup_id; > + u16 pss_ltr_blocking_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 ioss_d0ix_id; > + u16 ioss_d3_id; > + u16 ioss_pg_id; > + > + struct telemetry_susp_stats suspend_stats; > +}; > + > +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 = TELEM_EVT_LEN(telem_apl_pss_idle_data), > + .pcs_idle_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_idle_blkd_data), > + .pcs_s0ix_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_s0ix_blkd_data), > + .pss_ltr_evts = TELEM_EVT_LEN(telem_apl_pss_ltr_data), > + .pss_wakeup_evts = TELEM_EVT_LEN(telem_apl_pss_wakeup), > + .ioss_d0ix_evts = TELEM_EVT_LEN(telem_apl_ioss_d0ix_data), > + .ioss_pg_evts = TELEM_EVT_LEN(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[] = { > + TELEM_DEBUGFS_CPU(0x5c, 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]; > + int index, idx, ret, err = 0; > + u32 pss_idle[TELEM_PSS_IDLE_EVTS], > + 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]; > + u64 pstates = 0; > + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + > + 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); > + > + if (evtlog[index].telem_evtid == debugfs_conf->pss_idle_id) { > + for (idx = 0; idx < debugfs_conf->pss_idle_evts - 1; > + idx++) { See previous comments on indentation > + pss_idle[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->pss_idle_data[idx].bit_pos) & > + TELEM_MASK_BIT; Here too. > + } > + > + pss_idle[idx] = (evtlog[index].telem_evtlog >> > + debugfs_conf->pss_idle_data[idx].bit_pos) & > + TELEM_APL_MASK_PCS_STATE; And here > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->pcs_idle_blkd_id) { > + for (idx = 0; idx < debugfs_conf->pcs_idle_blkd_evts; > + idx++) { > + pcs_idle_blkd[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->pcs_idle_blkd_data[idx].bit_pos) & > + TELEM_MASK_BYTE; > + } And here - please check this file for indentation throughout. > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->pcs_s0ix_blkd_id) { > + for (idx = 0; idx < debugfs_conf->pcs_s0ix_blkd_evts; > + idx++) { > + pcs_s0ix_blkd[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->pcs_s0ix_blkd_data[idx].bit_pos) & > + TELEM_MASK_BYTE; > + } > + continue; > + } > + > + > + if (evtlog[index].telem_evtid == debugfs_conf->pss_wakeup_id) { > + for (idx = 0; idx < debugfs_conf->pss_wakeup_evts; > + idx++) { > + pss_s0ix_wakeup[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->pss_wakeup[idx].bit_pos) & > + TELEM_MASK_BYTE; > + } > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->pss_ltr_blocking_id) { > + for (idx = 0; idx < debugfs_conf->pss_ltr_evts; > + idx++) { > + pss_ltr_blkd[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->pss_ltr_data[idx].bit_pos) & > + TELEM_MASK_BYTE; > + } > + continue; > + } > + > + > + 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; > +} > + > +static int telem_pss_state_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, telem_pss_states_show, inode->i_private); > +} > + > +static const struct file_operations telem_pss_ops = { > + .open = telem_pss_state_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > +}; > + > + > +static int telem_ioss_states_show(struct seq_file *s, void *unused) > +{ > + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + int index; > + int ret, err; > + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + > + 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; > +} > + > +static int telem_ioss_state_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, telem_ioss_states_show, inode->i_private); > +} > + > +static const struct file_operations telem_ioss_ops = { > + .open = telem_ioss_state_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > +}; > + > +static int telem_soc_states_show(struct seq_file *s, void *unused) > +{ > + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + struct pci_dev *dev = NULL; > + u16 pmcsr; > + int index, idx, ret; > + 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]; > + u32 d3_state; > + 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; > + > + ret = telemetry_read_eventlog(TELEM_IOSS, evtlog, > + TELEM_MAX_OS_ALLOCATED_EVENTS); > + if (ret < 0) > + return ret; > + > + for (index = 0; index < ret; index++) { This flow is... odd, but I suppose the contiue; elements add some degree of legibility over if/else and an optimization may be lost from a switch statement since the comparing value is dynamic.... so.... OK. > + if (evtlog[index].telem_evtid == debugfs_conf->ioss_d3_id) { > + for (idx = 0; idx < debugfs_conf->ioss_d0ix_evts; > + idx++) { > + d3_sts[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->ioss_d0ix_data[idx].bit_pos) & > + TELEM_MASK_BIT; > + } > + continue; > + } > + > + if (evtlog[index].telem_evtid == debugfs_conf->ioss_pg_id) { > + for (idx = 0; idx < debugfs_conf->ioss_pg_evts; idx++) { > + pg_sts[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->ioss_pg_data[idx].bit_pos) & > + TELEM_MASK_BIT; > + } > + continue; > + } > + > + if (evtlog[index].telem_evtid == debugfs_conf->ioss_d0ix_id) { > + for (idx = 0; idx < debugfs_conf->ioss_d0ix_evts; > + idx++) { > + d0ix_sts[idx] = > + (evtlog[index].telem_evtlog >> > + debugfs_conf->ioss_d0ix_data[idx].bit_pos) & > + TELEM_MASK_BIT; > + } > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_total_occ_id) { > + s0ix_total_ctr = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_occ_id) { > + s0ix_shlw_ctr = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_occ_id) { > + s0ix_deep_ctr = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_total_res_id) { > + s0ix_total_res = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_res_id) { > + s0ix_shlw_res = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_res_id) { > + s0ix_deep_res = evtlog[index].telem_evtlog; > + continue; > + } > + > + } > + > + 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 - debugfs_conf->suspend_stats.suspend_shlw_ctr - > + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr, > + (u64)((s0ix_shlw_res - > + debugfs_conf->suspend_stats.suspend_shlw_res - > + debugfs_conf->suspend_stats.suspend_shlw_swake_res)*10/192)); > + > + seq_printf(s, "S0IX Deep\t\t\t %10u\t %10llu\n", > + s0ix_deep_ctr - debugfs_conf->suspend_stats.suspend_deep_ctr - > + debugfs_conf->suspend_stats.suspend_deep_swake_ctr, > + (u64)((s0ix_deep_res - > + debugfs_conf->suspend_stats.suspend_deep_res - > + debugfs_conf->suspend_stats.suspend_deep_swake_res)*10/192)); > + > + seq_printf(s, "Suspend(With S0ixShallow)\t %10u\t %10llu\n", > + debugfs_conf->suspend_stats.suspend_shlw_ctr, > + (u64)((debugfs_conf->suspend_stats.suspend_shlw_res*10)/192)); > + > + seq_printf(s, "Suspend(With S0ixDeep)\t\t %10u\t %10llu\n", > + debugfs_conf->suspend_stats.suspend_deep_ctr, > + (u64)((debugfs_conf->suspend_stats.suspend_deep_res*10)/192)); > + > + seq_printf(s, "Suspend(With Shallow-Wakes)\t %10u\t %10llu\n", > + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr + > + debugfs_conf->suspend_stats.suspend_deep_swake_ctr, > + (u64)((debugfs_conf->suspend_stats.suspend_shlw_swake_res + > + debugfs_conf->suspend_stats.suspend_deep_swake_res)*10/192)); > + > + seq_printf(s, "S0IX+Suspend Total\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 < debugfs_conf->ioss_d0ix_evts; index++) { > + seq_printf(s, "%-10s\t %u\t %u\n", > + debugfs_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 < debugfs_conf->ioss_pg_evts; index++) { > + seq_printf(s, "%-10s\t %u\n", > + debugfs_conf->ioss_pg_data[index].name, pg_sts[index]); > + } > + > + evtlog->telem_evtid = debugfs_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 < debugfs_conf->pss_idle_evts - 1; idx++) { > + pss_idle[idx] = (evtlog->telem_evtlog >> > + debugfs_conf->pss_idle_data[idx].bit_pos) & > + TELEM_MASK_BIT; > + } > + > + pss_idle[idx] = (evtlog->telem_evtlog >> > + debugfs_conf->pss_idle_data[idx].bit_pos) & > + TELEM_APL_MASK_PCS_STATE; > + > + for (index = 0; index < debugfs_conf->pss_idle_evts; index++) { > + seq_printf(s, "%-30s %u\n", > + debugfs_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; > +} > + > +static int telem_soc_state_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, telem_soc_states_show, inode->i_private); > +} > + > +static const struct file_operations telem_socstate_ops = { > + .open = telem_soc_state_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > +}; > + > +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; > + > + if (kstrtou32_from_user(userbuf, count, 0, &verbosity)) > + return -EFAULT; > + > + err = telemetry_set_trace_verbosity(TELEM_PSS, verbosity); > + if (err) { > + pr_err("Changing PSS Trace Verbosity Failed. Error %d\n", err); > + count = 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; > + > + if (kstrtou32_from_user(userbuf, count, 0, &verbosity)) > + return -EFAULT; > + > + err = telemetry_set_trace_verbosity(TELEM_IOSS, verbosity); > + if (err) { > + pr_err("Changing IOSS Trace Verbosity Failed. Error %d\n", err); > + count = 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, > +}; > + > +#ifdef CONFIG_PM_SLEEP > +static int pm_suspend_prep_cb(void) > +{ > + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + 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++) { > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_occ_id) { > + suspend_shlw_ctr_temp = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_occ_id) { > + suspend_deep_ctr_temp = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_res_id) { > + suspend_shlw_res_temp = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_res_id) { > + suspend_deep_res_temp = evtlog[index].telem_evtlog; > + continue; > + } > + } > + > + suspend_prep_ok = 1; > +out: > + return NOTIFY_OK; > +} > + > +static int pm_suspend_exit_cb(void) > +{ > + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; > + int ret, index; > + static u32 suspend_shlw_ctr_exit, suspend_deep_ctr_exit; > + static u64 suspend_shlw_res_exit, suspend_deep_res_exit; > + > + 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++) { > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_occ_id) { > + suspend_shlw_ctr_exit = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_occ_id) { > + suspend_deep_ctr_exit = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_shlw_res_id) { > + suspend_shlw_res_exit = evtlog[index].telem_evtlog; > + continue; > + } > + > + if (evtlog[index].telem_evtid == > + debugfs_conf->s0ix_deep_res_id) { > + suspend_deep_res_exit = evtlog[index].telem_evtlog; > + continue; > + } > + } > + > + 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; > + } > + > + 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 == 1) { > + debugfs_conf->suspend_stats.suspend_shlw_ctr += > + suspend_shlw_ctr_exit; > + debugfs_conf->suspend_stats.suspend_shlw_res += > + suspend_shlw_res_exit; > + } > + /* Shallow Wakes Case */ > + else if (suspend_shlw_ctr_exit > 1) { > + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr += > + suspend_shlw_ctr_exit; > + debugfs_conf->suspend_stats.suspend_shlw_swake_res += > + suspend_shlw_res_exit; > + } > + > + if (suspend_deep_ctr_exit == 1) { > + debugfs_conf->suspend_stats.suspend_deep_ctr += > + suspend_deep_ctr_exit; > + debugfs_conf->suspend_stats.suspend_deep_res += > + suspend_deep_res_exit; > + } > + > + /* Shallow Wakes Case */ > + else if (suspend_deep_ctr_exit > 1) { > + debugfs_conf->suspend_stats.suspend_deep_swake_ctr += > + suspend_deep_ctr_exit; > + debugfs_conf->suspend_stats.suspend_deep_swake_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, > +}; > +#endif /* CONFIG_PM_SLEEP */ > + > +static int __init telemetry_debugfs_init(void) > +{ > + int err = -ENOMEM; > + const struct x86_cpu_id *id; > + struct dentry *f; > + > + /* 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; > + > + err = telemetry_pltconfig_valid(); > + if (err < 0) > + return -ENODEV; > + > + err = telemetry_debugfs_check_evts(); > + if (err < 0) > + return -EINVAL; > + > + > +#ifdef CONFIG_PM_SLEEP > + register_pm_notifier(&pm_notifier); > +#endif /* CONFIG_PM_SLEEP */ > + > + debugfs_conf->telemetry_dbg_dir = > + debugfs_create_dir("telemetry", NULL); > + if (!(debugfs_conf->telemetry_dbg_dir)) > + return -ENOMEM; > + > + f = debugfs_create_file("pss_info", S_IFREG | S_IRUGO, > + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_pss_ops); > + if (!f) { > + pr_err("pss_sample_info debugfs register failed\n"); > + goto out; > + } > + > + f = debugfs_create_file("ioss_info", S_IFREG | S_IRUGO, > + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_ioss_ops); > + if (!f) { > + pr_err("ioss_sample_info debugfs register failed\n"); > + goto out; > + } > + > + f = debugfs_create_file("soc_states", S_IFREG | S_IRUGO, > + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_socstate_ops); > + if (!f) { > + pr_err("ioss_sample_info debugfs register failed\n"); > + goto out; > + } > + > + f = debugfs_create_file("pss_trace_verbosity", S_IFREG | S_IRUGO, > + (debugfs_conf->telemetry_dbg_dir), NULL, > + &telem_pss_trc_verb_ops); > + if (!f) { > + pr_err("pss_trace_verbosity debugfs register failed\n"); > + goto out; > + } > + > + f = debugfs_create_file("ioss_trace_verbosity", S_IFREG | S_IRUGO, > + (debugfs_conf->telemetry_dbg_dir), NULL, > + &telem_ioss_trc_verb_ops); > + if (!f) { > + pr_err("ioss_trace_verbosity debugfs register failed\n"); > + goto out; > + } > + > + return 0; > + > +out: > + debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir); > + debugfs_conf->telemetry_dbg_dir = NULL; > + > + return err; > +} > + > +static void __exit telemetry_debugfs_exit(void) > +{ > + debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir); > + debugfs_conf->telemetry_dbg_dir = NULL; > +} > + > +late_initcall(telemetry_debugfs_init); > +module_exit(telemetry_debugfs_exit); > + > +MODULE_AUTHOR("Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>"); > +MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface"); > +MODULE_VERSION(DRIVER_VERSION); > +MODULE_LICENSE("GPL v2"); Just GPL > -- > 1.7.9.5 > >
diff --git a/drivers/platform/x86/intel_telemetry_debugfs.c b/drivers/platform/x86/intel_telemetry_debugfs.c new file mode 100644 index 0000000..d69e659 --- /dev/null +++ b/drivers/platform/x86/intel_telemetry_debugfs.c @@ -0,0 +1,1080 @@ +/* + * Intel SOC Telemetry debugfs Driver: Currently supports APL + * Copyright (c) 2015, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * 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 <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/io.h> +#include <linux/uaccess.h> +#include <linux/pci.h> +#include <linux/suspend.h> + +#include <asm/cpu_device_id.h> +#include <asm/intel_pmc_ipc.h> +#include <asm/intel_punit_ipc.h> +#include <asm/intel_telemetry.h> + +#define DRIVER_NAME "telemetry_soc_debugfs" +#define DRIVER_VERSION "1.0.0" + +#define TELEM_INFO_SRAMEVTS_MASK 0xFF00 +#define TELEM_INFO_SRAMEVTS_SHIFT 0x8 +#define TELEM_SSRAM_READ_TIMEOUT 10 + +#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_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_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_MASK_BIT 1 +#define TELEM_MASK_BYTE 0xFF +#define BYTES_PER_LONG 8 +#define TELEM_APL_MASK_PCS_STATE 0xF + +#define TELEM_EVT_LEN(x) (sizeof(x)/sizeof((x)[0])) + +#define TELEM_DEBUGFS_CPU(model, data) \ + { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&data} + +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 suspend_shlw_ctr; + u32 suspend_deep_ctr; + u32 suspend_shlw_swake_ctr; + u32 suspend_deep_swake_ctr; + u64 suspend_shlw_res; + u64 suspend_deep_res; + u64 suspend_shlw_swake_res; + u64 suspend_deep_swake_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 dentry *telemetry_dbg_dir; + + /* Bitmap 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_ltr_info *pss_ltr_data; + struct telem_pss_wakeup_info *pss_wakeup; + struct telem_ioss_d0ix_stateinfo *ioss_d0ix_data; + struct telem_ioss_pg_info *ioss_pg_data; + u8 pss_idle_evts; + u8 pcs_idle_blkd_evts; + u8 pcs_s0ix_blkd_evts; + u8 pss_ltr_evts; + u8 pss_wakeup_evts; + u8 ioss_d0ix_evts; + u8 ioss_pg_evts; + + /* IDs */ + u16 pstates_id; + u16 pss_idle_id; + u16 pcs_idle_blkd_id; + u16 pcs_s0ix_blkd_id; + u16 pss_wakeup_id; + u16 pss_ltr_blocking_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 ioss_d0ix_id; + u16 ioss_d3_id; + u16 ioss_pg_id; + + struct telemetry_susp_stats suspend_stats; +}; + +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 = TELEM_EVT_LEN(telem_apl_pss_idle_data), + .pcs_idle_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_idle_blkd_data), + .pcs_s0ix_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_s0ix_blkd_data), + .pss_ltr_evts = TELEM_EVT_LEN(telem_apl_pss_ltr_data), + .pss_wakeup_evts = TELEM_EVT_LEN(telem_apl_pss_wakeup), + .ioss_d0ix_evts = TELEM_EVT_LEN(telem_apl_ioss_d0ix_data), + .ioss_pg_evts = TELEM_EVT_LEN(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[] = { + TELEM_DEBUGFS_CPU(0x5c, 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]; + int index, idx, ret, err = 0; + u32 pss_idle[TELEM_PSS_IDLE_EVTS], + 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]; + u64 pstates = 0; + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; + + 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); + + if (evtlog[index].telem_evtid == debugfs_conf->pss_idle_id) { + for (idx = 0; idx < debugfs_conf->pss_idle_evts - 1; + idx++) { + pss_idle[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->pss_idle_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + + pss_idle[idx] = (evtlog[index].telem_evtlog >> + debugfs_conf->pss_idle_data[idx].bit_pos) & + TELEM_APL_MASK_PCS_STATE; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->pcs_idle_blkd_id) { + for (idx = 0; idx < debugfs_conf->pcs_idle_blkd_evts; + idx++) { + pcs_idle_blkd[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->pcs_idle_blkd_data[idx].bit_pos) & + TELEM_MASK_BYTE; + } + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->pcs_s0ix_blkd_id) { + for (idx = 0; idx < debugfs_conf->pcs_s0ix_blkd_evts; + idx++) { + pcs_s0ix_blkd[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->pcs_s0ix_blkd_data[idx].bit_pos) & + TELEM_MASK_BYTE; + } + continue; + } + + + if (evtlog[index].telem_evtid == debugfs_conf->pss_wakeup_id) { + for (idx = 0; idx < debugfs_conf->pss_wakeup_evts; + idx++) { + pss_s0ix_wakeup[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->pss_wakeup[idx].bit_pos) & + TELEM_MASK_BYTE; + } + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->pss_ltr_blocking_id) { + for (idx = 0; idx < debugfs_conf->pss_ltr_evts; + idx++) { + pss_ltr_blkd[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->pss_ltr_data[idx].bit_pos) & + TELEM_MASK_BYTE; + } + continue; + } + + + 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; +} + +static int telem_pss_state_open(struct inode *inode, struct file *file) +{ + return single_open(file, telem_pss_states_show, inode->i_private); +} + +static const struct file_operations telem_pss_ops = { + .open = telem_pss_state_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + + +static int telem_ioss_states_show(struct seq_file *s, void *unused) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + int index; + int ret, err; + const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS]; + + 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; +} + +static int telem_ioss_state_open(struct inode *inode, struct file *file) +{ + return single_open(file, telem_ioss_states_show, inode->i_private); +} + +static const struct file_operations telem_ioss_ops = { + .open = telem_ioss_state_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int telem_soc_states_show(struct seq_file *s, void *unused) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + struct pci_dev *dev = NULL; + u16 pmcsr; + int index, idx, ret; + 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]; + u32 d3_state; + 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; + + ret = telemetry_read_eventlog(TELEM_IOSS, evtlog, + TELEM_MAX_OS_ALLOCATED_EVENTS); + if (ret < 0) + return ret; + + for (index = 0; index < ret; index++) { + if (evtlog[index].telem_evtid == debugfs_conf->ioss_d3_id) { + for (idx = 0; idx < debugfs_conf->ioss_d0ix_evts; + idx++) { + d3_sts[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->ioss_d0ix_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + continue; + } + + if (evtlog[index].telem_evtid == debugfs_conf->ioss_pg_id) { + for (idx = 0; idx < debugfs_conf->ioss_pg_evts; idx++) { + pg_sts[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->ioss_pg_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + continue; + } + + if (evtlog[index].telem_evtid == debugfs_conf->ioss_d0ix_id) { + for (idx = 0; idx < debugfs_conf->ioss_d0ix_evts; + idx++) { + d0ix_sts[idx] = + (evtlog[index].telem_evtlog >> + debugfs_conf->ioss_d0ix_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_total_occ_id) { + s0ix_total_ctr = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_occ_id) { + s0ix_shlw_ctr = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_occ_id) { + s0ix_deep_ctr = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_total_res_id) { + s0ix_total_res = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_res_id) { + s0ix_shlw_res = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_res_id) { + s0ix_deep_res = evtlog[index].telem_evtlog; + continue; + } + + } + + 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 - debugfs_conf->suspend_stats.suspend_shlw_ctr - + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr, + (u64)((s0ix_shlw_res - + debugfs_conf->suspend_stats.suspend_shlw_res - + debugfs_conf->suspend_stats.suspend_shlw_swake_res)*10/192)); + + seq_printf(s, "S0IX Deep\t\t\t %10u\t %10llu\n", + s0ix_deep_ctr - debugfs_conf->suspend_stats.suspend_deep_ctr - + debugfs_conf->suspend_stats.suspend_deep_swake_ctr, + (u64)((s0ix_deep_res - + debugfs_conf->suspend_stats.suspend_deep_res - + debugfs_conf->suspend_stats.suspend_deep_swake_res)*10/192)); + + seq_printf(s, "Suspend(With S0ixShallow)\t %10u\t %10llu\n", + debugfs_conf->suspend_stats.suspend_shlw_ctr, + (u64)((debugfs_conf->suspend_stats.suspend_shlw_res*10)/192)); + + seq_printf(s, "Suspend(With S0ixDeep)\t\t %10u\t %10llu\n", + debugfs_conf->suspend_stats.suspend_deep_ctr, + (u64)((debugfs_conf->suspend_stats.suspend_deep_res*10)/192)); + + seq_printf(s, "Suspend(With Shallow-Wakes)\t %10u\t %10llu\n", + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr + + debugfs_conf->suspend_stats.suspend_deep_swake_ctr, + (u64)((debugfs_conf->suspend_stats.suspend_shlw_swake_res + + debugfs_conf->suspend_stats.suspend_deep_swake_res)*10/192)); + + seq_printf(s, "S0IX+Suspend Total\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 < debugfs_conf->ioss_d0ix_evts; index++) { + seq_printf(s, "%-10s\t %u\t %u\n", + debugfs_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 < debugfs_conf->ioss_pg_evts; index++) { + seq_printf(s, "%-10s\t %u\n", + debugfs_conf->ioss_pg_data[index].name, pg_sts[index]); + } + + evtlog->telem_evtid = debugfs_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 < debugfs_conf->pss_idle_evts - 1; idx++) { + pss_idle[idx] = (evtlog->telem_evtlog >> + debugfs_conf->pss_idle_data[idx].bit_pos) & + TELEM_MASK_BIT; + } + + pss_idle[idx] = (evtlog->telem_evtlog >> + debugfs_conf->pss_idle_data[idx].bit_pos) & + TELEM_APL_MASK_PCS_STATE; + + for (index = 0; index < debugfs_conf->pss_idle_evts; index++) { + seq_printf(s, "%-30s %u\n", + debugfs_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; +} + +static int telem_soc_state_open(struct inode *inode, struct file *file) +{ + return single_open(file, telem_soc_states_show, inode->i_private); +} + +static const struct file_operations telem_socstate_ops = { + .open = telem_soc_state_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +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; + + if (kstrtou32_from_user(userbuf, count, 0, &verbosity)) + return -EFAULT; + + err = telemetry_set_trace_verbosity(TELEM_PSS, verbosity); + if (err) { + pr_err("Changing PSS Trace Verbosity Failed. Error %d\n", err); + count = 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; + + if (kstrtou32_from_user(userbuf, count, 0, &verbosity)) + return -EFAULT; + + err = telemetry_set_trace_verbosity(TELEM_IOSS, verbosity); + if (err) { + pr_err("Changing IOSS Trace Verbosity Failed. Error %d\n", err); + count = 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, +}; + +#ifdef CONFIG_PM_SLEEP +static int pm_suspend_prep_cb(void) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + 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++) { + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_occ_id) { + suspend_shlw_ctr_temp = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_occ_id) { + suspend_deep_ctr_temp = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_res_id) { + suspend_shlw_res_temp = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_res_id) { + suspend_deep_res_temp = evtlog[index].telem_evtlog; + continue; + } + } + + suspend_prep_ok = 1; +out: + return NOTIFY_OK; +} + +static int pm_suspend_exit_cb(void) +{ + struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS]; + int ret, index; + static u32 suspend_shlw_ctr_exit, suspend_deep_ctr_exit; + static u64 suspend_shlw_res_exit, suspend_deep_res_exit; + + 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++) { + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_occ_id) { + suspend_shlw_ctr_exit = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_occ_id) { + suspend_deep_ctr_exit = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_shlw_res_id) { + suspend_shlw_res_exit = evtlog[index].telem_evtlog; + continue; + } + + if (evtlog[index].telem_evtid == + debugfs_conf->s0ix_deep_res_id) { + suspend_deep_res_exit = evtlog[index].telem_evtlog; + continue; + } + } + + 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; + } + + 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 == 1) { + debugfs_conf->suspend_stats.suspend_shlw_ctr += + suspend_shlw_ctr_exit; + debugfs_conf->suspend_stats.suspend_shlw_res += + suspend_shlw_res_exit; + } + /* Shallow Wakes Case */ + else if (suspend_shlw_ctr_exit > 1) { + debugfs_conf->suspend_stats.suspend_shlw_swake_ctr += + suspend_shlw_ctr_exit; + debugfs_conf->suspend_stats.suspend_shlw_swake_res += + suspend_shlw_res_exit; + } + + if (suspend_deep_ctr_exit == 1) { + debugfs_conf->suspend_stats.suspend_deep_ctr += + suspend_deep_ctr_exit; + debugfs_conf->suspend_stats.suspend_deep_res += + suspend_deep_res_exit; + } + + /* Shallow Wakes Case */ + else if (suspend_deep_ctr_exit > 1) { + debugfs_conf->suspend_stats.suspend_deep_swake_ctr += + suspend_deep_ctr_exit; + debugfs_conf->suspend_stats.suspend_deep_swake_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, +}; +#endif /* CONFIG_PM_SLEEP */ + +static int __init telemetry_debugfs_init(void) +{ + int err = -ENOMEM; + const struct x86_cpu_id *id; + struct dentry *f; + + /* 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; + + err = telemetry_pltconfig_valid(); + if (err < 0) + return -ENODEV; + + err = telemetry_debugfs_check_evts(); + if (err < 0) + return -EINVAL; + + +#ifdef CONFIG_PM_SLEEP + register_pm_notifier(&pm_notifier); +#endif /* CONFIG_PM_SLEEP */ + + debugfs_conf->telemetry_dbg_dir = + debugfs_create_dir("telemetry", NULL); + if (!(debugfs_conf->telemetry_dbg_dir)) + return -ENOMEM; + + f = debugfs_create_file("pss_info", S_IFREG | S_IRUGO, + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_pss_ops); + if (!f) { + pr_err("pss_sample_info debugfs register failed\n"); + goto out; + } + + f = debugfs_create_file("ioss_info", S_IFREG | S_IRUGO, + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_ioss_ops); + if (!f) { + pr_err("ioss_sample_info debugfs register failed\n"); + goto out; + } + + f = debugfs_create_file("soc_states", S_IFREG | S_IRUGO, + (debugfs_conf->telemetry_dbg_dir), NULL, &telem_socstate_ops); + if (!f) { + pr_err("ioss_sample_info debugfs register failed\n"); + goto out; + } + + f = debugfs_create_file("pss_trace_verbosity", S_IFREG | S_IRUGO, + (debugfs_conf->telemetry_dbg_dir), NULL, + &telem_pss_trc_verb_ops); + if (!f) { + pr_err("pss_trace_verbosity debugfs register failed\n"); + goto out; + } + + f = debugfs_create_file("ioss_trace_verbosity", S_IFREG | S_IRUGO, + (debugfs_conf->telemetry_dbg_dir), NULL, + &telem_ioss_trc_verb_ops); + if (!f) { + pr_err("ioss_trace_verbosity debugfs register failed\n"); + goto out; + } + + return 0; + +out: + debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir); + debugfs_conf->telemetry_dbg_dir = NULL; + + return err; +} + +static void __exit telemetry_debugfs_exit(void) +{ + debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir); + debugfs_conf->telemetry_dbg_dir = NULL; +} + +late_initcall(telemetry_debugfs_init); +module_exit(telemetry_debugfs_exit); + +MODULE_AUTHOR("Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>"); +MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface"); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL v2");
This implements debugfs interfaces for reading the telemetry samples from SSRAM and configuring firmware trace verbosity. Interface created under /sys/kernel/debug/telemetry soc_states: SoC Device and Low Power States pss_info: Info from the Primary SubSystem ioss_info: Info from IO SubSusytem pss_trace_verbosity: Read/Modify PSS F/W trace verbosity ioss_trace_verbosity: Read/Modify IOSS F/W trace verbosity. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> --- drivers/platform/x86/intel_telemetry_debugfs.c | 1080 ++++++++++++++++++++++++ 1 file changed, 1080 insertions(+) create mode 100644 drivers/platform/x86/intel_telemetry_debugfs.c