1 /* 2 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /** 18 * DOC: Implements general SM debug framework 19 */ 20 #include <wlan_sm_engine.h> 21 #include <wlan_sm_engine_dbg.h> 22 23 void wlan_sm_save_history(struct wlan_sm *sm, 24 enum wlan_sm_trace_type trace_type, 25 uint8_t initial_state, uint8_t final_state, 26 uint16_t event_type) 27 { 28 struct wlan_sm_history *p_sm_history = &sm->history; 29 struct wlan_sm_history_info *p_memento; 30 31 /* 32 * History saved in circular buffer. 33 * Save a pointer to next write location and increment pointer. 34 */ 35 qdf_spin_lock_bh(&p_sm_history->sm_history_lock); 36 p_memento = &p_sm_history->data[p_sm_history->index]; 37 p_sm_history->index++; 38 39 if (p_sm_history->index >= WLAN_SM_ENGINE_HISTORY_SIZE) 40 p_sm_history->index = 0; 41 42 qdf_spin_unlock_bh(&p_sm_history->sm_history_lock); 43 44 qdf_mem_zero(p_memento, sizeof(*p_memento)); 45 p_memento->trace_type = trace_type; 46 p_memento->initial_state = initial_state; 47 p_memento->final_state = final_state; 48 p_memento->event_type = event_type; 49 } 50 51 void wlan_sm_history_init(struct wlan_sm *sm) 52 { 53 qdf_spinlock_create(&sm->history.sm_history_lock); 54 } 55 56 void wlan_sm_history_delete(struct wlan_sm *sm) 57 { 58 qdf_spinlock_destroy(&sm->history.sm_history_lock); 59 } 60 61 static void wlan_sm_print_history_entry(struct wlan_sm *sm, 62 struct wlan_sm_history_info *ent, 63 uint16_t i) 64 { 65 const char *event_name = NULL; 66 67 if (sm->event_names) { 68 if (ent->event_type < sm->num_event_names) 69 event_name = sm->event_names[ent->event_type]; 70 71 sm_engine_nofl_info(" (%d) trace_type: %d, event:%s[%d]", i, 72 ent->trace_type, 73 event_name ? event_name : "UNKNOWN_EVENT", 74 ent->event_type); 75 } else { 76 sm_engine_nofl_info(" (%d) trace_type: %d, event: %d", i, 77 ent->trace_type, ent->event_type); 78 } 79 80 sm_engine_nofl_info(" (%d) initial state :%s[%d], final state: %s[%d]", 81 i, sm->state_info[ent->initial_state].name, 82 ent->initial_state, 83 sm->state_info[ent->final_state].name, 84 ent->final_state); 85 } 86 87 void wlan_sm_print_history(struct wlan_sm *sm) 88 { 89 struct wlan_sm_history *p_sm_history = &sm->history; 90 uint16_t i; 91 92 /* 93 * History saved in circular buffer. 94 * Save a pointer to next write location and increment pointer. 95 */ 96 qdf_spin_lock_bh(&p_sm_history->sm_history_lock); 97 sm_engine_nofl_info("%s: SM History index is %d", 98 sm->name, p_sm_history->index); 99 for (i = 0; i < WLAN_SM_ENGINE_HISTORY_SIZE; i++) 100 wlan_sm_print_history_entry(sm, &p_sm_history->data[i], i); 101 102 qdf_spin_unlock_bh(&p_sm_history->sm_history_lock); 103 } 104