From ea08eeccae9297f7aabd2ef7f0c2517ac4549acc Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:18:26 +0000
Subject: [PATCH] write in 30M
---
kernel/drivers/platform/x86/intel_telemetry_debugfs.c | 161 +++++++++++++----------------------------------------
1 files changed, 39 insertions(+), 122 deletions(-)
diff --git a/kernel/drivers/platform/x86/intel_telemetry_debugfs.c b/kernel/drivers/platform/x86/intel_telemetry_debugfs.c
index b998d7d..1d4d0fb 100644
--- a/kernel/drivers/platform/x86/intel_telemetry_debugfs.c
+++ b/kernel/drivers/platform/x86/intel_telemetry_debugfs.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel SOC Telemetry debugfs Driver: Currently supports APL
* Copyright (c) 2015, Intel Corporation.
* All Rights Reserved.
- *
- * 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
@@ -23,6 +15,7 @@
*/
#include <linux/debugfs.h>
#include <linux/device.h>
+#include <linux/mfd/intel_pmc_bxt.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/seq_file.h>
@@ -30,7 +23,6 @@
#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
-#include <asm/intel_pmc_ipc.h>
#include <asm/intel_telemetry.h>
#define DRIVER_NAME "telemetry_soc_debugfs"
@@ -71,9 +63,6 @@
#define TELEM_PSS_LTR_BLOCKING_EVTS 20
#define TELEM_IOSS_DX_D0IX_EVTS 25
#define TELEM_IOSS_PG_EVTS 30
-
-#define TELEM_DEBUGFS_CPU(model, data) \
- { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&data}
#define TELEM_CHECK_AND_PARSE_EVTS(EVTID, EVTNUM, BUF, EVTLOG, EVTDAT, MASK) { \
if (evtlog[index].telem_evtid == (EVTID)) { \
@@ -319,11 +308,10 @@
};
static const struct x86_cpu_id telemetry_debugfs_cpu_ids[] = {
- TELEM_DEBUGFS_CPU(INTEL_FAM6_ATOM_GOLDMONT, telem_apl_debugfs_conf),
- TELEM_DEBUGFS_CPU(INTEL_FAM6_ATOM_GOLDMONT_PLUS, telem_apl_debugfs_conf),
+ 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)
@@ -477,17 +465,7 @@
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,
-};
+DEFINE_SHOW_ATTRIBUTE(telem_pss_states);
static int telem_ioss_states_show(struct seq_file *s, void *unused)
{
@@ -516,17 +494,7 @@
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,
-};
+DEFINE_SHOW_ATTRIBUTE(telem_ioss_states);
static int telem_soc_states_show(struct seq_file *s, void *unused)
{
@@ -675,24 +643,15 @@
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,
-};
+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(&s0ix_total_res);
+ ret = intel_pmc_s0ix_counter_read(plt_config->pmc, &s0ix_total_res);
if (ret) {
pr_err("Failed to read S0ix residency");
return ret;
@@ -727,13 +686,14 @@
u32 verbosity;
int err;
- if (kstrtou32_from_user(userbuf, count, 0, &verbosity))
- return -EFAULT;
+ 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);
- count = err;
+ return err;
}
return count;
@@ -774,13 +734,14 @@
u32 verbosity;
int err;
- if (kstrtou32_from_user(userbuf, count, 0, &verbosity))
- return -EFAULT;
+ 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);
- count = err;
+ return err;
}
return count;
@@ -877,12 +838,15 @@
*/
if (suspend_shlw_ctr_exit == suspend_shlw_ctr_temp &&
suspend_deep_ctr_exit == suspend_deep_ctr_temp) {
- ret = intel_pmc_gcr_read64(PMC_GCR_TELEM_SHLW_S0IX_REG,
+ 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_GCR_TELEM_DEEP_S0IX_REG,
+ ret = intel_pmc_gcr_read64(pmc, PMC_GCR_TELEM_DEEP_S0IX_REG,
&suspend_deep_res_exit);
if (ret < 0)
goto out;
@@ -941,7 +905,7 @@
{
const struct x86_cpu_id *id;
int err;
- struct dentry *f;
+ struct dentry *dir;
/* Only APL supported for now */
id = x86_match_cpu(telemetry_debugfs_cpu_ids);
@@ -950,8 +914,7 @@
debugfs_conf = (struct telemetry_debugfs_conf *)id->driver_data;
- err = telemetry_pltconfig_valid();
- if (err < 0) {
+ if (!telemetry_get_pltdata()) {
pr_info("Invalid pltconfig, ensure IPC1 device is enabled in BIOS\n");
return -ENODEV;
}
@@ -964,68 +927,22 @@
register_pm_notifier(&pm_notifier);
- err = -ENOMEM;
- debugfs_conf->telemetry_dbg_dir = debugfs_create_dir("telemetry", NULL);
- if (!debugfs_conf->telemetry_dbg_dir)
- goto out_pm;
+ dir = debugfs_create_dir("telemetry", NULL);
+ debugfs_conf->telemetry_dbg_dir = dir;
- 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("s0ix_residency_usec", S_IFREG | S_IRUGO,
- debugfs_conf->telemetry_dbg_dir,
- NULL, &telem_s0ix_fops);
- if (!f) {
- pr_err("s0ix_residency_usec 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;
- }
-
+ 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;
-
-out:
- debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir);
- debugfs_conf->telemetry_dbg_dir = NULL;
-out_pm:
- unregister_pm_notifier(&pm_notifier);
-
- return err;
}
static void __exit telemetry_debugfs_exit(void)
@@ -1041,4 +958,4 @@
MODULE_AUTHOR("Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>");
MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface");
MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
--
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