| /* |
| * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* Suppress -Waddress-of-packed-member for new toolchain update. |
| * Bug: http://b/33566695 |
| */ |
| #if __clang_major__ >= 4 |
| #pragma clang diagnostic ignored "-Waddress-of-packed-member" |
| #endif |
| |
| #include <qdf_hang_event_notifier.h> |
| #include <qdf_notifier.h> |
| #include <wmi_hang_event.h> |
| #include <wmi_unified_priv.h> |
| #include <qdf_trace.h> |
| |
| struct wmi_hang_data_fixed_param { |
| uint16_t tlv_header; /* tlv tag and length */ |
| uint32_t event; |
| uint32_t data; |
| uint64_t time; |
| } qdf_packed; |
| |
| #define WMI_EVT_HIST 0 |
| #define WMI_CMD_HIST 1 |
| |
| static void wmi_log_history(struct notifier_block *block, void *data, |
| uint8_t wmi_history) |
| { |
| qdf_notif_block *notif_block = qdf_container_of(block, qdf_notif_block, |
| notif_block); |
| struct qdf_notifer_data *wmi_hang_data = data; |
| int nread, pos, total_len; |
| unsigned int wmi_ring_size = 1; |
| uint64_t secs, usecs; |
| struct wmi_event_debug *wmi_evt; |
| struct wmi_unified *wmi_handle; |
| struct wmi_log_buf_t *wmi_log; |
| struct wmi_hang_data_fixed_param *cmd; |
| struct wmi_command_debug *wmi_cmd; |
| uint8_t *wmi_buf_ptr; |
| |
| if (!wmi_hang_data) |
| return; |
| |
| wmi_handle = notif_block->priv_data; |
| if (!wmi_handle) |
| return; |
| |
| if (wmi_history) |
| wmi_log = &wmi_handle->log_info.wmi_event_log_buf_info; |
| else |
| wmi_log = &wmi_handle->log_info.wmi_command_log_buf_info; |
| |
| total_len = sizeof(struct wmi_hang_data_fixed_param); |
| |
| if (wmi_log->length <= wmi_ring_size) |
| nread = wmi_log->length; |
| else |
| nread = wmi_ring_size; |
| |
| if (*wmi_log->p_buf_tail_idx == 0) |
| /* tail can be 0 after wrap-around */ |
| pos = wmi_ring_size - 1; |
| else |
| pos = *wmi_log->p_buf_tail_idx - 1; |
| |
| while (nread--) { |
| if (wmi_hang_data->offset + total_len > QDF_WLAN_HANG_FW_OFFSET) |
| return; |
| |
| switch (wmi_history) { |
| case WMI_EVT_HIST: |
| wmi_buf_ptr = (wmi_hang_data->hang_data + |
| wmi_hang_data->offset); |
| cmd = ((struct wmi_hang_data_fixed_param *)wmi_buf_ptr); |
| QDF_HANG_EVT_SET_HDR(&cmd->tlv_header, |
| HANG_EVT_TAG_WMI_EVT_HIST, |
| QDF_HANG_GET_STRUCT_TLVLEN(struct wmi_hang_data_fixed_param)); |
| wmi_evt = &(((struct wmi_event_debug *)wmi_log->buf)[pos]); |
| cmd->event = wmi_evt->event; |
| qdf_log_timestamp_to_secs(wmi_evt->time, &secs, &usecs); |
| cmd->time = secs; |
| cmd->data = wmi_evt->data[0]; |
| break; |
| case WMI_CMD_HIST: |
| wmi_buf_ptr = (wmi_hang_data->hang_data + |
| wmi_hang_data->offset); |
| cmd = ((struct wmi_hang_data_fixed_param *)wmi_buf_ptr); |
| QDF_HANG_EVT_SET_HDR(&cmd->tlv_header, |
| HANG_EVT_TAG_WMI_CMD_HIST, |
| QDF_HANG_GET_STRUCT_TLVLEN(struct wmi_hang_data_fixed_param)); |
| wmi_cmd = &(((struct wmi_command_debug *)wmi_log->buf)[pos]); |
| cmd->event = wmi_cmd->command; |
| qdf_log_timestamp_to_secs(wmi_cmd->time, &secs, &usecs); |
| cmd->time = secs; |
| cmd->data = wmi_cmd->data[0]; |
| break; |
| } |
| if (pos == 0) |
| pos = wmi_ring_size - 1; |
| else |
| pos--; |
| wmi_hang_data->offset += total_len; |
| } |
| } |
| |
| static int wmi_recovery_notifier_call(struct notifier_block *block, |
| unsigned long state, |
| void *data) |
| { |
| wmi_log_history(block, data, WMI_EVT_HIST); |
| wmi_log_history(block, data, WMI_CMD_HIST); |
| |
| return NOTIFY_OK; |
| } |
| |
| static qdf_notif_block wmi_recovery_notifier = { |
| .notif_block.notifier_call = wmi_recovery_notifier_call, |
| }; |
| |
| QDF_STATUS wmi_hang_event_notifier_register(struct wmi_unified *wmi_hdl) |
| { |
| wmi_recovery_notifier.priv_data = wmi_hdl; |
| return qdf_hang_event_register_notifier(&wmi_recovery_notifier); |
| } |
| |
| QDF_STATUS wmi_hang_event_notifier_unregister(void) |
| { |
| return qdf_hang_event_unregister_notifier(&wmi_recovery_notifier); |
| } |