1 /*
2 * SPDX-FileCopyrightText: 2016-2023 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include "esp_attr.h"
8 #include "esp_private/pm_trace.h"
9 #include "driver/gpio.h"
10 #include "soc/soc.h"
11 #include "soc/gpio_reg.h"
12
13 /* GPIOs to use for tracing of esp_pm events.
14 * Two entries in the array for each type, one for each CPU.
15 * Feel free to change when debugging.
16 */
17 static const int DRAM_ATTR s_trace_io[] = {
18 #if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2
19 BIT(4), BIT(5), // ESP_PM_TRACE_IDLE
20 BIT(16), BIT(17), // ESP_PM_TRACE_TICK
21 BIT(18), BIT(18), // ESP_PM_TRACE_FREQ_SWITCH
22 BIT(19), BIT(19), // ESP_PM_TRACE_CCOMPARE_UPDATE
23 BIT(25), BIT(26), // ESP_PM_TRACE_ISR_HOOK
24 BIT(27), BIT(27), // ESP_PM_TRACE_SLEEP
25 #elif CONFIG_IDF_TARGET_ESP32S3
26 BIT(4), BIT(5), // ESP_PM_TRACE_IDLE
27 BIT(6), BIT(7), // ESP_PM_TRACE_TICK
28 BIT(14), BIT(14), // ESP_PM_TRACE_FREQ_SWITCH
29 BIT(15), BIT(15), // ESP_PM_TRACE_CCOMPARE_UPDATE
30 BIT(16), BIT(17), // ESP_PM_TRACE_ISR_HOOK
31 BIT(18), BIT(18), // ESP_PM_TRACE_SLEEP
32 #elif CONFIG_IDF_TARGET_ESP32H2
33 BIT(2), BIT(3), // ESP_PM_TRACE_IDLE
34 BIT(4), BIT(5), // ESP_PM_TRACE_TICK
35 BIT(6), BIT(6), // ESP_PM_TRACE_FREQ_SWITCH
36 BIT(7), BIT(7), // ESP_PM_TRACE_CCOMPARE_UPDATE
37 BIT(8), BIT(9), // ESP_PM_TRACE_ISR_HOOK
38 BIT(10), BIT(10), // ESP_PM_TRACE_SLEEP
39 #else
40 BIT(2), BIT(3), // ESP_PM_TRACE_IDLE
41 BIT(4), BIT(5), // ESP_PM_TRACE_TICK
42 BIT(6), BIT(6), // ESP_PM_TRACE_FREQ_SWITCH
43 BIT(7), BIT(7), // ESP_PM_TRACE_CCOMPARE_UPDATE
44 BIT(8), BIT(9), // ESP_PM_TRACE_ISR_HOOK
45 BIT(18), BIT(18), // ESP_PM_TRACE_SLEEP
46 #endif
47 };
48
esp_pm_trace_init(void)49 void esp_pm_trace_init(void)
50 {
51 for (size_t i = 0; i < sizeof(s_trace_io) / sizeof(s_trace_io[0]); ++i) {
52 int io = __builtin_ffs(s_trace_io[i]);
53 if (io == 0) {
54 continue;
55 }
56 gpio_set_direction(io - 1, GPIO_MODE_OUTPUT);
57 }
58 }
59
esp_pm_trace_enter(esp_pm_trace_event_t event,int core_id)60 void IRAM_ATTR esp_pm_trace_enter(esp_pm_trace_event_t event, int core_id)
61 {
62 REG_WRITE(GPIO_OUT_W1TS_REG, s_trace_io[2 * event + core_id]);
63 }
64
esp_pm_trace_exit(esp_pm_trace_event_t event,int core_id)65 void IRAM_ATTR esp_pm_trace_exit(esp_pm_trace_event_t event, int core_id)
66 {
67 REG_WRITE(GPIO_OUT_W1TC_REG, s_trace_io[2 * event + core_id]);
68 }
69
