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| 1 | +/** |
| 2 | + * Copyright (c) 2024-2025 Qualcomm Innovation Center, Inc. All rights reserved. |
| 3 | + * |
| 4 | + * This program is free software; you can redistribute it and/or modify |
| 5 | + * it under the terms of the GNU General Public License version 2 and |
| 6 | + * only version 2 as published by the Free Software Foundation. |
| 7 | + * |
| 8 | + * This program is distributed in the hope that it will be useful, |
| 9 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | + * GNU General Public License for more details. |
| 12 | + * |
| 13 | + * SPDX-License-Identifier: GPL-2.0-only |
| 14 | + */ |
| 15 | + |
| 16 | +#include "wdt.h" |
| 17 | + |
| 18 | +#pragma GCC diagnostic push |
| 19 | +#pragma GCC diagnostic ignored "-Wpointer-arith" |
| 20 | + |
| 21 | +#ifndef BUILD_TARGET_TOGETHER |
| 22 | +DEFINE_PLUGIN_COMMAND(Watchdog) |
| 23 | +#endif |
| 24 | + |
| 25 | +void Watchdog::cmd_main(void) { |
| 26 | + int c; |
| 27 | + std::string cppString; |
| 28 | + if (argcnt < 2) cmd_usage(pc->curcmd, SYNOPSIS); |
| 29 | + while ((c = getopt(argcnt, args, "a")) != EOF) { |
| 30 | + switch(c) { |
| 31 | + case 'a': |
| 32 | + print_watchdog_info(); |
| 33 | + break; |
| 34 | + default: |
| 35 | + argerrs++; |
| 36 | + break; |
| 37 | + } |
| 38 | + } |
| 39 | + if (argerrs) |
| 40 | + cmd_usage(pc->curcmd, SYNOPSIS); |
| 41 | +} |
| 42 | + |
| 43 | +Watchdog::Watchdog(){ |
| 44 | + field_init(msm_watchdog_data,base); |
| 45 | + field_init(msm_watchdog_data,pet_time); |
| 46 | + field_init(msm_watchdog_data,bark_time); |
| 47 | + field_init(msm_watchdog_data,bark_irq); |
| 48 | + field_init(msm_watchdog_data,do_ipi_ping); |
| 49 | + field_init(msm_watchdog_data,in_panic); |
| 50 | + field_init(msm_watchdog_data,wakeup_irq_enable); |
| 51 | + field_init(msm_watchdog_data,irq_ppi); |
| 52 | + field_init(msm_watchdog_data,last_pet); |
| 53 | + field_init(msm_watchdog_data,alive_mask); |
| 54 | + field_init(msm_watchdog_data,wdog_cpu_dd); |
| 55 | + field_init(msm_watchdog_data,enabled); |
| 56 | + field_init(msm_watchdog_data,user_pet_enabled); |
| 57 | + field_init(msm_watchdog_data,watchdog_task); |
| 58 | + field_init(msm_watchdog_data,pet_timer); |
| 59 | + field_init(msm_watchdog_data,timer_expired); |
| 60 | + field_init(msm_watchdog_data,user_pet_complete); |
| 61 | + field_init(msm_watchdog_data,timer_fired); |
| 62 | + field_init(msm_watchdog_data,thread_start); |
| 63 | + field_init(msm_watchdog_data,ping_start); |
| 64 | + field_init(msm_watchdog_data,ping_end); |
| 65 | + field_init(msm_watchdog_data,cpu_idle_pc_state); |
| 66 | + field_init(msm_watchdog_data,freeze_in_progress); |
| 67 | + field_init(msm_watchdog_data,irq_counts); |
| 68 | + field_init(msm_watchdog_data,ipi_counts); |
| 69 | + field_init(msm_watchdog_data,irq_counts_running); |
| 70 | + field_init(msm_watchdog_data,user_pet_timer); |
| 71 | + field_init(msm_watchdog_data,watchdog_task); |
| 72 | + field_init(timer_list,expires); |
| 73 | + struct_init(msm_watchdog_data); |
| 74 | + cmd_name = "wdt"; |
| 75 | + help_str_list={ |
| 76 | + "wdt", /* command name */ |
| 77 | + "dump watchdog information", /* short description */ |
| 78 | + "-a \n" |
| 79 | + " This command dumps the watchdog info.", |
| 80 | + "\n", |
| 81 | + "EXAMPLES", |
| 82 | + " Display watchdog info:", |
| 83 | + " %s> wdt -a", |
| 84 | + " enabled : True", |
| 85 | + " base : c5a66000", |
| 86 | + " user_pet_enabled : False", |
| 87 | + " pet_time : 9.36s", |
| 88 | + " bark_time : 15s", |
| 89 | + " bite_time : 18s", |
| 90 | + " bark_irq : 25", |
| 91 | + " user_pet_complete : True", |
| 92 | + " wakeup_irq_enable : True", |
| 93 | + " in_panic : True", |
| 94 | + " irq_ppi : False", |
| 95 | + " freeze_in_progress : False", |
| 96 | + "", |
| 97 | + " pet_timer:", |
| 98 | + " jiffies : 4299314482", |
| 99 | + " expires : 4348153", |
| 100 | + " timer_expired : False", |
| 101 | + " timer_fired : 14784480161054", |
| 102 | + " last_jiffies_update : 14790618520938", |
| 103 | + " tick_next_period : 14790621854271", |
| 104 | + " tick_do_timer_cpu : 3", |
| 105 | + "", |
| 106 | + " watchdog_thread:", |
| 107 | + " watchdog_task : eb1d5c80", |
| 108 | + " pid : 40", |
| 109 | + " cpu : 0", |
| 110 | + " task_state : IN", |
| 111 | + " last_run : 14784480389231", |
| 112 | + " thread_start : 14784480630012", |
| 113 | + " last_pet : 14784480640950", |
| 114 | + " do_ipi_ping : True", |
| 115 | + " ping cpu[0] : 1203198795~1203203274(4479ns)", |
| 116 | + " ping cpu[1] : 0~0(0ns)", |
| 117 | + " ping cpu[2] : 0~0(0ns)", |
| 118 | + " ping cpu[3] : 0~0(0ns)", |
| 119 | + "\n", |
| 120 | + }; |
| 121 | + initialize(); |
| 122 | +} |
| 123 | + |
| 124 | +void Watchdog::print_watchdog_info(){ |
| 125 | + if (!csymbol_exists("wdog_data")){ |
| 126 | + fprintf(fp, "wdog_data doesn't exist in this kernel!\n"); |
| 127 | + return; |
| 128 | + } |
| 129 | + ulong wdt_addr = read_pointer(csymbol_value("wdog_data"),"wdog_data"); |
| 130 | + if (!is_kvaddr(wdt_addr)) { |
| 131 | + fprintf(fp, "wdog_data address is invalid!\n"); |
| 132 | + return; |
| 133 | + } |
| 134 | + void *wdt_buf = read_struct(wdt_addr,"msm_watchdog_data"); |
| 135 | + if (!wdt_buf) { |
| 136 | + return; |
| 137 | + } |
| 138 | + ulong base = UINT(wdt_buf + field_offset(msm_watchdog_data,base)); |
| 139 | + uint pet_time = UINT(wdt_buf + field_offset(msm_watchdog_data,pet_time)); |
| 140 | + uint bark_time = UINT(wdt_buf + field_offset(msm_watchdog_data,bark_time)); |
| 141 | + uint bark_irq = UINT(wdt_buf + field_offset(msm_watchdog_data,bark_irq)); |
| 142 | + bool enabled = BOOL(wdt_buf + field_offset(msm_watchdog_data,enabled)); |
| 143 | + bool user_pet_enabled = BOOL(wdt_buf + field_offset(msm_watchdog_data,user_pet_enabled)); |
| 144 | + bool do_ipi_ping = BOOL(wdt_buf + field_offset(msm_watchdog_data,do_ipi_ping)); |
| 145 | + bool in_panic = BOOL(wdt_buf + field_offset(msm_watchdog_data,in_panic)); |
| 146 | + bool wakeup_irq_enable = BOOL(wdt_buf + field_offset(msm_watchdog_data,wakeup_irq_enable)); |
| 147 | + bool irq_ppi = BOOL(wdt_buf + field_offset(msm_watchdog_data,irq_ppi)); |
| 148 | + bool timer_expired = BOOL(wdt_buf + field_offset(msm_watchdog_data,timer_expired)); |
| 149 | + bool user_pet_complete = BOOL(wdt_buf + field_offset(msm_watchdog_data,user_pet_complete)); |
| 150 | + bool freeze_in_progress = BOOL(wdt_buf + field_offset(msm_watchdog_data,freeze_in_progress)); |
| 151 | + uint64_t last_pet = ULONGLONG(wdt_buf + field_offset(msm_watchdog_data,last_pet)); |
| 152 | + uint64_t timer_fired = ULONGLONG(wdt_buf + field_offset(msm_watchdog_data,timer_fired)); |
| 153 | + uint64_t thread_start = ULONGLONG(wdt_buf + field_offset(msm_watchdog_data,thread_start)); |
| 154 | + ulong watchdog_task = ULONG(wdt_buf + field_offset(msm_watchdog_data,watchdog_task)); |
| 155 | + FREEBUF(wdt_buf); |
| 156 | + long state = task_state(watchdog_task); |
| 157 | + struct task_context* tc = task_to_context(watchdog_task); |
| 158 | + uint64_t jiffies = 0; |
| 159 | + if (csymbol_exists("jiffies")){ |
| 160 | + jiffies = read_ulonglong(csymbol_value("jiffies"),"jiffies"); |
| 161 | + }else if (csymbol_exists("jiffies_64")){ |
| 162 | + jiffies = read_ulonglong(csymbol_value("jiffies_64"),"jiffies"); |
| 163 | + } |
| 164 | + uint64_t last_jiffies_update = read_ulonglong(csymbol_value("last_jiffies_update"),"last_jiffies_update"); |
| 165 | + uint64_t tick_next_period = read_ulonglong(csymbol_value("tick_next_period"),"tick_next_period"); |
| 166 | + int tick_do_timer_cpu = read_int(csymbol_value("tick_do_timer_cpu"),"tick_do_timer_cpu"); |
| 167 | + ulong expires = read_ulong(wdt_addr + field_offset(msm_watchdog_data,pet_timer) + field_offset(timer_list,expires),"expires"); |
| 168 | + char buf[BUFSIZE]; |
| 169 | + std::ostringstream oss; |
| 170 | + oss << std::left << std::setw(20) << "enabled : " << (enabled ? "True":"False") << "\n" |
| 171 | + << std::left << std::setw(20) << "wdt_base : " << std::hex << base << "\n" |
| 172 | + << std::left << std::setw(20) << "user_pet_enabled : " << (user_pet_enabled ? "True":"False") << "\n" |
| 173 | + << std::left << std::setw(20) << "pet_time : " << std::dec << ((double)pet_time / 1000) << "s\n" |
| 174 | + << std::left << std::setw(20) << "bark_time : " << std::dec << ((double)bark_time / 1000) << "s\n" |
| 175 | + << std::left << std::setw(20) << "bite_time : " << std::dec << ((double)bark_time + 3 * 1000)/1000 << "s\n" |
| 176 | + << std::left << std::setw(20) << "bark_irq : " << std::dec << bark_irq << "\n" |
| 177 | + << std::left << std::setw(20) << "user_pet_complete : " << (user_pet_complete ? "True":"False") << "\n" |
| 178 | + << std::left << std::setw(20) << "wakeup_irq_enable : " << (wakeup_irq_enable ? "True":"False") << "\n" |
| 179 | + << std::left << std::setw(20) << "in_panic : " << (in_panic ? "True":"False") << "\n" |
| 180 | + << std::left << std::setw(20) << "irq_ppi : " << (irq_ppi ? "True":"False") << "\n" |
| 181 | + << std::left << std::setw(20) << "freeze_in_progress : " << (freeze_in_progress ? "True":"False") << "\n\n" |
| 182 | + << std::left << "pet_timer: " << "\n" |
| 183 | + << std::left << std::setw(20) << " jiffies : " << std::dec << jiffies << "\n" |
| 184 | + << std::left << std::setw(20) << " expires : " << std::dec << expires << "\n" |
| 185 | + << std::left << std::setw(20) << " timer_expired : " << (timer_expired ? "True":"False") << "\n" |
| 186 | + << std::left << std::setw(20) << " timer_fired : " << std::dec << timer_fired << "\n" |
| 187 | + << std::left << std::setw(20) << " last_jiffies_update : " << std::dec << last_jiffies_update << "\n" |
| 188 | + << std::left << std::setw(20) << " tick_next_period : " << std::dec << tick_next_period << "\n" |
| 189 | + << std::left << std::setw(20) << " tick_do_timer_cpu : " << std::dec << tick_do_timer_cpu << "\n\n" |
| 190 | + << std::left << "watchdog_thread: " << "\n" |
| 191 | + << std::left << std::setw(20) << " watchdog_task : " << std::hex << watchdog_task << "\n" |
| 192 | + << std::left << std::setw(20) << " pid : " << std::dec << tc->pid << "\n" |
| 193 | + << std::left << std::setw(20) << " cpu : " << std::dec << tc->processor << "\n" |
| 194 | + << std::left << std::setw(20) << " task_state : " << task_state_string(watchdog_task, buf, 0) << "\n" |
| 195 | + << std::left << std::setw(20) << " last_run : " << task_last_run(watchdog_task) << "\n" |
| 196 | + << std::left << std::setw(20) << " thread_start : " << std::dec << thread_start << "\n" |
| 197 | + << std::left << std::setw(20) << " last_pet : " << std::dec << last_pet << "\n" |
| 198 | + << std::left << std::setw(20) << " do_ipi_ping : " << (do_ipi_ping ? "True":"False") << "\n"; |
| 199 | + ulong ping_start_addr = wdt_addr + field_offset(msm_watchdog_data,ping_start); |
| 200 | + ulong ping_end_addr = wdt_addr + field_offset(msm_watchdog_data,ping_end); |
| 201 | + ulong cips_addr = wdt_addr + field_offset(msm_watchdog_data,cpu_idle_pc_state); |
| 202 | + for (size_t i = 0; i < NR_CPUS; i++) { |
| 203 | + if (!kt->__per_cpu_offset[i]) |
| 204 | + continue; |
| 205 | + ulong ping_start = read_ulonglong(ping_start_addr + i * sizeof(unsigned long long),"ping_start"); |
| 206 | + ulong ping_end = read_ulonglong(ping_end_addr + i * sizeof(unsigned long long),"ping_end"); |
| 207 | + ulong cips = read_int(cips_addr + i * sizeof(int),"cpu_idle_pc_state"); |
| 208 | + std::string pcpu = "ping cpu[" + std::to_string(i) + "]"; |
| 209 | + oss << std::left << " " << std::setw(20) << pcpu << ": " << ping_start << "~" << ping_end << "(" << (ping_end - ping_start)<< "ns)" << "\n"; |
| 210 | + } |
| 211 | + oss << std::left << "-----------------------------------------------" << "\n"; |
| 212 | + if (timer_expired == false){ |
| 213 | + oss << std::left << "pet_timer is not trigger !" << "\n"; |
| 214 | + } |
| 215 | + fprintf(fp, "%s \n",oss.str().c_str()); |
| 216 | +} |
| 217 | + |
| 218 | + |
| 219 | +#pragma GCC diagnostic pop |
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