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