storaged: read emmc health data from sysfs
Sysfs data is straightforward so we don't need parsing anymore.
Also removed periodical check since data is set only once during
driver initialization. Checking at every device boot or storaged
restart should be sufficient to monitor long term status change.
Test: adb logcat -d -b events | grep storaged_emmc_info
Bug: 36228467
Change-Id: I2a181f52c9f19de1e679a3a905aaebafe4d08227
diff --git a/storaged/storaged_info.cpp b/storaged/storaged_info.cpp
index 73d611c..1a5da41 100644
--- a/storaged/storaged_info.cpp
+++ b/storaged/storaged_info.cpp
@@ -16,83 +16,118 @@
#define LOG_TAG "storaged"
+#include <stdio.h>
#include <string.h>
#include <android-base/file.h>
-#include <android-base/logging.h>
#include <android-base/parseint.h>
+#include <android-base/logging.h>
#include <log/log_event_list.h>
#include "storaged.h"
using namespace std;
-using namespace android;
using namespace android::base;
+void report_storage_health()
+{
+ emmc_info_t mmc;
+ mmc.report();
+}
+
void storage_info_t::publish()
{
- if (eol == 0 && lifetime_a == 0 && lifetime_b == 0) {
- return;
- }
-
android_log_event_list(EVENTLOGTAG_EMMCINFO)
<< version << eol << lifetime_a << lifetime_b
<< LOG_ID_EVENTS;
}
-bool emmc_info_t::init()
+bool emmc_info_t::report()
+{
+ if (!report_sysfs() && !report_debugfs())
+ return false;
+
+ publish();
+ return true;
+}
+
+bool emmc_info_t::report_sysfs()
{
string buffer;
- if (!ReadFileToString(ext_csd_file, &buffer) ||
- buffer.length() < (size_t)EXT_CSD_FILE_MIN_SIZE) {
+ uint16_t rev = 0;
+
+ if (!ReadFileToString(emmc_sysfs + "rev", &buffer)) {
return false;
}
- string ver_str = buffer.substr(EXT_CSD_REV_IDX, sizeof(str_hex));
- uint8_t ext_csd_rev;
- if (!ParseUint(ver_str, &ext_csd_rev)) {
- LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_CSD_REV.";
+ if (sscanf(buffer.c_str(), "0x%hx", &rev) < 1 ||
+ rev < 7 || rev > ARRAY_SIZE(emmc_ver_str)) {
return false;
}
version = "emmc ";
- version += (ext_csd_rev < ARRAY_SIZE(emmc_ver_str)) ?
- emmc_ver_str[ext_csd_rev] : "Unknown";
+ version += emmc_ver_str[rev];
- if (ext_csd_rev < 7) {
+ if (!ReadFileToString(emmc_sysfs + "pre_eol_info", &buffer)) {
return false;
}
- return update();
-}
-
-bool emmc_info_t::update()
-{
- string buffer;
- if (!ReadFileToString(ext_csd_file, &buffer) ||
- buffer.length() < (size_t)EXT_CSD_FILE_MIN_SIZE) {
+ if (sscanf(buffer.c_str(), "%hx", &eol) < 1 || eol == 0) {
return false;
}
- string str = buffer.substr(EXT_PRE_EOL_INFO_IDX, sizeof(str_hex));
- if (!ParseUint(str, &eol)) {
- LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_PRE_EOL_INFO.";
+ if (!ReadFileToString(emmc_sysfs + "life_time", &buffer)) {
return false;
}
- str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_A_IDX, sizeof(str_hex));
- if (!ParseUint(str, &lifetime_a)) {
- LOG_TO(SYSTEM, ERROR)
- << "Failure on parsing EXT_DEVICE_LIFE_TIME_EST_TYP_A.";
- return false;
- }
-
- str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_B_IDX, sizeof(str_hex));
- if (!ParseUint(str, &lifetime_b)) {
- LOG_TO(SYSTEM, ERROR)
- << "Failure on parsing EXT_DEVICE_LIFE_TIME_EST_TYP_B.";
+ if (sscanf(buffer.c_str(), "0x%hx 0x%hx", &lifetime_a, &lifetime_b) < 2 ||
+ (lifetime_a == 0 && lifetime_b == 0)) {
return false;
}
return true;
}
+
+const size_t EXT_CSD_FILE_MIN_SIZE = 1024;
+/* 2 characters in string for each byte */
+const size_t EXT_CSD_REV_IDX = 192 * 2;
+const size_t EXT_PRE_EOL_INFO_IDX = 267 * 2;
+const size_t EXT_DEVICE_LIFE_TIME_EST_A_IDX = 268 * 2;
+const size_t EXT_DEVICE_LIFE_TIME_EST_B_IDX = 269 * 2;
+
+bool emmc_info_t::report_debugfs()
+{
+ string buffer;
+ uint16_t rev = 0;
+
+ if (!ReadFileToString(emmc_debugfs, &buffer) ||
+ buffer.length() < (size_t)EXT_CSD_FILE_MIN_SIZE) {
+ return false;
+ }
+
+ string str = buffer.substr(EXT_CSD_REV_IDX, 2);
+ if (!ParseUint(str, &rev) ||
+ rev < 7 || rev > ARRAY_SIZE(emmc_ver_str)) {
+ return false;
+ }
+
+ version = "emmc ";
+ version += emmc_ver_str[rev];
+
+ str = buffer.substr(EXT_PRE_EOL_INFO_IDX, 2);
+ if (!ParseUint(str, &eol)) {
+ return false;
+ }
+
+ str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_A_IDX, 2);
+ if (!ParseUint(str, &lifetime_a)) {
+ return false;
+ }
+
+ str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_B_IDX, 2);
+ if (!ParseUint(str, &lifetime_b)) {
+ return false;
+ }
+
+ return true;
+}
\ No newline at end of file