--- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -621,6 +621,26 @@ struct ath11k_board_data { /* IPQ8074 HW channel counters frequency value in hertz */ #define IPQ8074_CC_FREQ_HERTZ 320000 +struct ath11k_bp_stats { + /* Head Pointer reported by the last HTT Backpressure event for the ring*/ + u16 hp; + /* Tail Pointer reported by the last HTT Backpressure event for the ring*/ + u16 tp; + /* Number of Backpressure events received for the ring*/ + u32 count; + /* Last recorded event timestamp */ + unsigned long jiffies; +}; + +struct ath11k_dp_ring_bp_stats { + struct ath11k_bp_stats umac_ring_bp_stats[HTT_SW_UMAC_RING_IDX_MAX]; + struct ath11k_bp_stats lmac_ring_bp_stats[HTT_SW_LMAC_RING_IDX_MAX][MAX_RADIOS]; +}; + +struct ath11k_soc_dp_ring_stats { + struct ath11k_dp_ring_bp_stats bp_stats; +}; + struct ath11k_soc_dp_rx_stats { u32 err_ring_pkts; u32 invalid_rbm; @@ -693,6 +713,7 @@ struct ath11k_base { #ifdef CPTCFG_ATH11K_DEBUGFS struct dentry *debugfs_soc; struct dentry *debugfs_ath11k; + struct ath11k_soc_dp_ring_stats ring_stats; #endif struct ath11k_soc_dp_rx_stats soc_stats; --- a/drivers/net/wireless/ath/ath11k/debug.c +++ b/drivers/net/wireless/ath/ath11k/debug.c @@ -13,6 +13,45 @@ #include "peer.h" #include "pktlog.h" +#ifdef CPTCFG_ATH11K_DEBUGFS +static const char *htt_bp_umac_ring[HTT_SW_UMAC_RING_IDX_MAX] = { + "REO2SW1_RING", + "REO2SW2_RING", + "REO2SW3_RING", + "REO2SW4_RING", + "WBM2REO_LINK_RING", + "REO2TCL_RING", + "REO2FW_RING", + "RELEASE_RING", + "PPE_RELEASE_RING", + "TCL2TQM_RING", + "TQM_RELEASE_RING", + "REO_RELEASE_RING", + "WBM2SW0_RELEASE_RING", + "WBM2SW1_RELEASE_RING", + "WBM2SW2_RELEASE_RING", + "WBM2SW3_RELEASE_RING", + "REO_CMD_RING", + "REO_STATUS_RING", +}; + +static const char *htt_bp_lmac_ring[HTT_SW_LMAC_RING_IDX_MAX] = { + "FW2RXDMA_BUF_RING", + "FW2RXDMA_STATUS_RING", + "FW2RXDMA_LINK_RING", + "SW2RXDMA_BUF_RING", + "WBM2RXDMA_LINK_RING", + "RXDMA2FW_RING", + "RXDMA2SW_RING", + "RXDMA2RELEASE_RING", + "RXDMA2REO_RING", + "MONITOR_STATUS_RING", + "MONITOR_BUF_RING", + "MONITOR_DESC_RING", + "MONITOR_DEST_RING", +}; +#endif + void ath11k_info(struct ath11k_base *ab, const char *fmt, ...) { struct va_format vaf = { @@ -795,6 +834,85 @@ static ssize_t ath11k_debug_dump_soc_rx_ return retval; } +static int ath11k_fill_bp_stats(struct ath11k_base *ab, + struct ath11k_bp_stats *bp_stats, + char *buf, int len, int size) +{ + lockdep_assert_held(&ab->base_lock); + + len += scnprintf(buf + len, size - len, "count: %u\n", + bp_stats->count); + len += scnprintf(buf + len, size - len, "hp: %u\n", + bp_stats->hp); + len += scnprintf(buf + len, size - len, "tp: %u\n", + bp_stats->tp); + len += scnprintf(buf + len, size - len, "seen before: %ums\n\n", + jiffies_to_msecs(jiffies - bp_stats->jiffies)); + return len; +} + +static ssize_t ath11k_debug_dump_soc_ring_stats(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath11k_base *ab = file->private_data; + struct ath11k_bp_stats *bp_stats; + int len = 0, retval; + u8 i, pdev_idx; + const int size = 4096; + bool stats_rxd = false; + char *buf; + + buf = kzalloc(size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += scnprintf(buf + len, size - len, "\nRing Stats\n==========\n"); + len += scnprintf(buf + len, size - len, "Backpressure Stats\n"); + len += scnprintf(buf + len, size - len, "==================\n"); + + spin_lock_bh(&ab->base_lock); + for (i = 0; i < HTT_SW_UMAC_RING_IDX_MAX; i++) { + bp_stats = &ab->ring_stats.bp_stats.umac_ring_bp_stats[i]; + + if (!bp_stats->count) + continue; + + len += scnprintf(buf + len, size - len, "Ring: %s\n", + htt_bp_umac_ring[i]); + len = ath11k_fill_bp_stats(ab, bp_stats, buf, len, size); + stats_rxd = true; + } + + for (i = 0; i < HTT_SW_LMAC_RING_IDX_MAX; i++) { + for(pdev_idx = 0; pdev_idx < MAX_RADIOS; pdev_idx++) { + bp_stats = &ab->ring_stats.bp_stats.lmac_ring_bp_stats[i][pdev_idx]; + + if (!bp_stats->count) + continue; + + len += scnprintf(buf + len, size - len, "Ring: %s\n", + htt_bp_lmac_ring[i]); + len += scnprintf(buf + len, size - len, "pdev: %d\n", + pdev_idx); + len = ath11k_fill_bp_stats(ab, bp_stats, buf, len, size); + stats_rxd = true; + } + } + spin_unlock_bh(&ab->base_lock); + + if (!stats_rxd) + len += scnprintf(buf + len, size - len, "No Ring Backpressure stats received\n\n"); + + if (len > size) + len = size; + + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return retval; +} + static const struct file_operations fops_soc_rx_stats = { .read = ath11k_debug_dump_soc_rx_stats, .open = simple_open, @@ -827,6 +945,13 @@ void ath11k_debug_pdev_destroy(struct at ab->debugfs_ath11k = NULL; } +static const struct file_operations fops_soc_ring_stats = { + .read = ath11k_debug_dump_soc_ring_stats, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + int ath11k_debug_soc_create(struct ath11k_base *ab) { ab->debugfs_ath11k = debugfs_create_dir("ath11k", NULL); @@ -837,6 +962,8 @@ int ath11k_debug_soc_create(struct ath11 return -ENOMEM; } + debugfs_create_file("soc_ring_stats", 0600, ab->debugfs_soc, ab, + &fops_soc_ring_stats); return 0; } --- a/drivers/net/wireless/ath/ath11k/dp.h +++ b/drivers/net/wireless/ath/ath11k/dp.h @@ -992,6 +992,48 @@ struct htt_resp_msg { #define HTT_BACKPRESSURE_EVENT_HP_M GENMASK(15, 0) #define HTT_BACKPRESSURE_EVENT_TP_M GENMASK(31, 16) +#define HTT_BACKPRESSURE_UMAC_RING_TYPE 0 +#define HTT_BACKPRESSURE_LMAC_RING_TYPE 1 + +enum htt_backpressure_umac_ringid { + HTT_SW_RING_IDX_REO_REO2SW1_RING, + HTT_SW_RING_IDX_REO_REO2SW2_RING, + HTT_SW_RING_IDX_REO_REO2SW3_RING, + HTT_SW_RING_IDX_REO_REO2SW4_RING, + HTT_SW_RING_IDX_REO_WBM2REO_LINK_RING, + HTT_SW_RING_IDX_REO_REO2TCL_RING, + HTT_SW_RING_IDX_REO_REO2FW_RING, + HTT_SW_RING_IDX_REO_REO_RELEASE_RING, + HTT_SW_RING_IDX_WBM_PPE_RELEASE_RING, + HTT_SW_RING_IDX_TCL_TCL2TQM_RING, + HTT_SW_RING_IDX_WBM_TQM_RELEASE_RING, + HTT_SW_RING_IDX_WBM_REO_RELEASE_RING, + HTT_SW_RING_IDX_WBM_WBM2SW0_RELEASE_RING, + HTT_SW_RING_IDX_WBM_WBM2SW1_RELEASE_RING, + HTT_SW_RING_IDX_WBM_WBM2SW2_RELEASE_RING, + HTT_SW_RING_IDX_WBM_WBM2SW3_RELEASE_RING, + HTT_SW_RING_IDX_REO_REO_CMD_RING, + HTT_SW_RING_IDX_REO_REO_STATUS_RING, + HTT_SW_UMAC_RING_IDX_MAX, +}; + +enum htt_backpressure_lmac_ringid { + HTT_SW_RING_IDX_FW2RXDMA_BUF_RING, + HTT_SW_RING_IDX_FW2RXDMA_STATUS_RING, + HTT_SW_RING_IDX_FW2RXDMA_LINK_RING, + HTT_SW_RING_IDX_SW2RXDMA_BUF_RING, + HTT_SW_RING_IDX_WBM2RXDMA_LINK_RING, + HTT_SW_RING_IDX_RXDMA2FW_RING, + HTT_SW_RING_IDX_RXDMA2SW_RING, + HTT_SW_RING_IDX_RXDMA2RELEASE_RING, + HTT_SW_RING_IDX_RXDMA2REO_RING, + HTT_SW_RING_IDX_MONITOR_STATUS_RING, + HTT_SW_RING_IDX_MONITOR_BUF_RING, + HTT_SW_RING_IDX_MONITOR_DESC_RING, + HTT_SW_RING_IDX_MONITOR_DEST_RING, + HTT_SW_LMAC_RING_IDX_MAX, +}; + /* ppdu stats * * @details --- a/drivers/net/wireless/ath/ath11k/dp_rx.c +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c @@ -1504,6 +1504,10 @@ static void ath11k_htt_backpressure_even u8 pdev_id, ring_type, ring_id; u16 hp, tp; u32 backpressure_time; +#ifdef CPTCFG_ATH11K_DEBUGFS + u8 pdev_idx; + struct ath11k_bp_stats *bp_stats; +#endif pdev_id = FIELD_GET(HTT_BACKPRESSURE_EVENT_PDEV_ID_M, *data); ring_type = FIELD_GET(HTT_BACKPRESSURE_EVENT_RING_TYPE_M, *data); @@ -1518,6 +1522,25 @@ static void ath11k_htt_backpressure_even ath11k_dbg(ab, ATH11K_DBG_DP_HTT, "htt backpressure event, pdev %d, ring type %d,ring id %d, hp %d tp %d, backpressure time %d\n", pdev_id, ring_type, ring_id, hp, tp, backpressure_time); +#ifdef CPTCFG_ATH11K_DEBUGFS + if (ring_type == HTT_BACKPRESSURE_UMAC_RING_TYPE) { + if (ring_id >= HTT_SW_UMAC_RING_IDX_MAX) + return; + bp_stats = &ab->ring_stats.bp_stats.umac_ring_bp_stats[ring_id]; + } else if (ring_type == HTT_BACKPRESSURE_LMAC_RING_TYPE) { + pdev_idx = DP_HW2SW_MACID(pdev_id); + + if (ring_id >= HTT_SW_LMAC_RING_IDX_MAX || pdev_idx >= MAX_RADIOS) + return; + bp_stats = &ab->ring_stats.bp_stats.lmac_ring_bp_stats[ring_id][pdev_idx]; + } + spin_lock_bh(&ab->base_lock); + bp_stats->hp = hp; + bp_stats->tp = tp; + bp_stats->count++; + bp_stats->jiffies = jiffies; + spin_unlock_bh(&ab->base_lock); +#endif } void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,