| /* |
| * Copyright (c) 2018,2020 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 "htc_debug.h" |
| #include "htc_internal.h" |
| #include "htc_credit_history.h" |
| #include <qdf_lock.h> |
| #include <qdf_hang_event_notifier.h> |
| #include <qdf_notifier.h> |
| |
| struct HTC_CREDIT_HISTORY { |
| enum htc_credit_exchange_type type; |
| uint64_t time; |
| uint32_t tx_credit; |
| uint32_t htc_tx_queue_depth; |
| }; |
| |
| struct htc_hang_data_fixed_param { |
| uint16_t tlv_header; |
| struct HTC_CREDIT_HISTORY credit_hist; |
| } qdf_packed; |
| |
| static qdf_spinlock_t g_htc_credit_lock; |
| static uint32_t g_htc_credit_history_idx; |
| static uint32_t g_htc_credit_history_length; |
| static |
| struct HTC_CREDIT_HISTORY htc_credit_history_buffer[HTC_CREDIT_HISTORY_MAX]; |
| |
| |
| #ifdef QCA_WIFI_NAPIER_EMULATION |
| #define HTC_EMULATION_DELAY_IN_MS 20 |
| /** |
| * htc_add_delay(): Adds a delay in before proceeding, only for emulation |
| * |
| * Return: None |
| */ |
| static inline void htc_add_emulation_delay(void) |
| { |
| qdf_mdelay(HTC_EMULATION_DELAY_IN_MS); |
| } |
| #else |
| static inline void htc_add_emulation_delay(void) |
| { |
| } |
| #endif |
| |
| void htc_credit_history_init(void) |
| { |
| qdf_spinlock_create(&g_htc_credit_lock); |
| g_htc_credit_history_idx = 0; |
| g_htc_credit_history_length = 0; |
| } |
| |
| /** |
| * htc_credit_record() - records tx que state & credit transactions |
| * @type: type of echange can be HTC_REQUEST_CREDIT |
| * or HTC_PROCESS_CREDIT_REPORT |
| * @tx_credits: current number of tx_credits |
| * @htc_tx_queue_depth: current hct tx queue depth |
| * |
| * This function records the credits and pending commands whenever a command is |
| * sent or credits are returned. Call this after the credits have been updated |
| * according to the transaction. Call this before dequeing commands. |
| * |
| * Consider making this function accept an HTC_ENDPOINT and find the current |
| * credits and queue depth itself. |
| * |
| */ |
| void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit, |
| uint32_t htc_tx_queue_depth) |
| { |
| qdf_spin_lock_bh(&g_htc_credit_lock); |
| if (g_htc_credit_history_idx >= HTC_CREDIT_HISTORY_MAX) |
| g_htc_credit_history_idx = 0; |
| |
| htc_credit_history_buffer[g_htc_credit_history_idx].type = type; |
| htc_credit_history_buffer[g_htc_credit_history_idx].time = |
| qdf_get_log_timestamp(); |
| htc_credit_history_buffer[g_htc_credit_history_idx].tx_credit = |
| tx_credit; |
| htc_credit_history_buffer[g_htc_credit_history_idx].htc_tx_queue_depth = |
| htc_tx_queue_depth; |
| |
| g_htc_credit_history_idx++; |
| g_htc_credit_history_length++; |
| htc_add_emulation_delay(); |
| qdf_spin_unlock_bh(&g_htc_credit_lock); |
| } |
| |
| void htc_print_credit_history(HTC_HANDLE htc, uint32_t count, |
| qdf_abstract_print *print, void *print_priv) |
| { |
| uint32_t idx; |
| |
| print(print_priv, "HTC Credit History (count %u)", count); |
| qdf_spin_lock_bh(&g_htc_credit_lock); |
| |
| if (count > HTC_CREDIT_HISTORY_MAX) |
| count = HTC_CREDIT_HISTORY_MAX; |
| if (count > g_htc_credit_history_length) |
| count = g_htc_credit_history_length; |
| |
| /* subtract count from index, and wrap if necessary */ |
| idx = HTC_CREDIT_HISTORY_MAX + g_htc_credit_history_idx - count; |
| idx %= HTC_CREDIT_HISTORY_MAX; |
| |
| print(print_priv, |
| "Time (seconds) Type Credits Queue Depth"); |
| while (count) { |
| struct HTC_CREDIT_HISTORY *hist = |
| &htc_credit_history_buffer[idx]; |
| uint64_t secs, usecs; |
| |
| qdf_log_timestamp_to_secs(hist->time, &secs, &usecs); |
| print(print_priv, "% 8lld.%06lld %-25s %-7.d %d", |
| secs, |
| usecs, |
| htc_credit_exchange_type_str(hist->type), |
| hist->tx_credit, |
| hist->htc_tx_queue_depth); |
| |
| --count; |
| ++idx; |
| if (idx >= HTC_CREDIT_HISTORY_MAX) |
| idx = 0; |
| } |
| |
| qdf_spin_unlock_bh(&g_htc_credit_lock); |
| } |
| |
| #ifdef WLAN_HANG_EVENT |
| void htc_log_hang_credit_history(struct notifier_block *block, void *data) |
| { |
| qdf_notif_block *notif_block = qdf_container_of(block, qdf_notif_block, |
| notif_block); |
| struct qdf_notifer_data *htc_hang_data = data; |
| uint32_t count = 1, idx, total_len; |
| HTC_HANDLE htc; |
| struct htc_hang_data_fixed_param *cmd; |
| uint8_t *htc_buf_ptr; |
| |
| htc = notif_block->priv_data; |
| |
| if (!htc) |
| return; |
| |
| if (!htc_hang_data) |
| return; |
| |
| total_len = sizeof(struct htc_hang_data_fixed_param); |
| qdf_spin_lock_bh(&g_htc_credit_lock); |
| |
| if (count > HTC_CREDIT_HISTORY_MAX) |
| count = HTC_CREDIT_HISTORY_MAX; |
| if (count > g_htc_credit_history_length) |
| count = g_htc_credit_history_length; |
| |
| idx = HTC_CREDIT_HISTORY_MAX + g_htc_credit_history_idx - count; |
| idx %= HTC_CREDIT_HISTORY_MAX; |
| |
| qdf_spin_unlock_bh(&g_htc_credit_lock); |
| |
| while (count) { |
| struct HTC_CREDIT_HISTORY *hist = |
| &htc_credit_history_buffer[idx]; |
| htc_buf_ptr = htc_hang_data->hang_data + htc_hang_data->offset; |
| cmd = (struct htc_hang_data_fixed_param *)htc_buf_ptr; |
| |
| if (htc_hang_data->offset + total_len > QDF_WLAN_HANG_FW_OFFSET) |
| return; |
| |
| QDF_HANG_EVT_SET_HDR(&cmd->tlv_header, |
| HANG_EVT_TAG_HTC_CREDIT_HIST, |
| QDF_HANG_GET_STRUCT_TLVLEN(struct htc_hang_data_fixed_param)); |
| qdf_mem_copy(&cmd->credit_hist, hist, sizeof(*hist)); |
| --count; |
| ++idx; |
| if (idx >= HTC_CREDIT_HISTORY_MAX) |
| idx = 0; |
| htc_hang_data->offset += total_len; |
| } |
| } |
| #endif |