From: Dinesh Karthikeyan <quic_dinek@xxxxxxxxxxx>
Add dump_htt_stats file operation to dump the stats value requested
for the requested stats_type.
Stats sent from firmware will be cumulative. Hence add debugfs to reset
the requested stats type.
Example with one ath12k device:
ath12k
`-- pci-0000:06:00.0
|-- mac0
`-- htt_stats
|-- htt_stats_type
|-- htt_stats_reset
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Dinesh Karthikeyan <quic_dinek@xxxxxxxxxxx>
Co-developed-by: Ramya Gnanasekar <quic_rgnanase@xxxxxxxxxxx>
Signed-off-by: Ramya Gnanasekar <quic_rgnanase@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath12k/core.h | 2 +
.../wireless/ath/ath12k/debugfs_htt_stats.c | 202 ++++++++++++++++++
.../wireless/ath/ath12k/debugfs_htt_stats.h | 30 +++
3 files changed, 234 insertions(+)
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 3919bc828620..77c0842e5ab0 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -477,6 +477,8 @@ struct ath12k_fw_stats {
struct ath12k_dbg_htt_stats {
enum ath12k_dbg_htt_ext_stats_type type;
u32 cfg_param[4];
+ u8 reset;
+ struct debug_htt_stats_req *stats_req;
/* protects shared stats req buffer */
spinlock_t lock;
};
diff --git a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
index 4a58362bdaea..2c64f3b4c239 100644
--- a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
+++ b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
@@ -8,6 +8,7 @@
#include "core.h"
#include "debug.h"
#include "debugfs_htt_stats.h"
+#include "dp_tx.h"
static ssize_t ath12k_read_htt_stats_type(struct file *file,
char __user *user_buf,
@@ -66,9 +67,210 @@ static const struct file_operations fops_htt_stats_type = {
.llseek = default_llseek,
};
+static int ath12k_debugfs_htt_stats_req(struct ath12k *ar)
+{
+ struct debug_htt_stats_req *stats_req = ar->debug.htt_stats.stats_req;
+ enum ath12k_dbg_htt_ext_stats_type type = stats_req->type;
+ u64 cookie;
+ int ret, pdev_id = ar->pdev->pdev_id;
+ struct htt_ext_stats_cfg_params cfg_params = { 0 };
+
+ init_completion(&stats_req->htt_stats_rcvd);
+
+ stats_req->done = false;
+ stats_req->pdev_id = pdev_id;
+
+ cookie = u64_encode_bits(ATH12K_HTT_STATS_MAGIC_VALUE,
+ ATH12K_HTT_STATS_COOKIE_MSB);
+ cookie |= u64_encode_bits(pdev_id, ATH12K_HTT_STATS_COOKIE_LSB);
+
+ if (stats_req->override_cfg_param) {
+ cfg_params.cfg0 = stats_req->cfg_param[0];
+ cfg_params.cfg1 = stats_req->cfg_param[1];
+ cfg_params.cfg2 = stats_req->cfg_param[2];
+ cfg_params.cfg3 = stats_req->cfg_param[3];
+ }
+
+ ret = ath12k_dp_tx_htt_h2t_ext_stats_req(ar, type, &cfg_params, cookie);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to send htt stats request: %d\n", ret);
+ return ret;
+ }
+ if (!wait_for_completion_timeout(&stats_req->htt_stats_rcvd, 3 * HZ)) {
+ spin_lock_bh(&ar->debug.htt_stats.lock);
+ if (!stats_req->done) {
+ stats_req->done = true;
+ spin_unlock_bh(&ar->debug.htt_stats.lock);
+ ath12k_warn(ar->ab, "stats request timed out\n");
+ return -ETIMEDOUT;
+ }
+ spin_unlock_bh(&ar->debug.htt_stats.lock);
+ }
+
+ return 0;
+}
+
+static int ath12k_open_htt_stats(struct inode *inode,
+ struct file *file)
+{
+ struct ath12k *ar = inode->i_private;
+ struct debug_htt_stats_req *stats_req;
+ enum ath12k_dbg_htt_ext_stats_type type = ar->debug.htt_stats.type;
+ struct ath12k_hw *ah = ath12k_ar_to_ah(ar);
+ int ret;
+
+ if (type == ATH12K_DBG_HTT_EXT_STATS_RESET)
+ return -EPERM;
+
+ mutex_lock(&ar->conf_mutex);
+
+ if (ah->state != ATH12K_HW_STATE_ON) {
+ ret = -ENETDOWN;
+ goto err_unlock;
+ }
+
+ if (ar->debug.htt_stats.stats_req) {
+ ret = -EAGAIN;
+ goto err_unlock;
+ }
+
+ stats_req = kzalloc(sizeof(*stats_req) + ATH12K_HTT_STATS_BUF_SIZE, GFP_KERNEL);
+ if (!stats_req) {
+ ret = -ENOMEM;
+ goto err_unlock;
+ }
+
+ ar->debug.htt_stats.stats_req = stats_req;
+ stats_req->type = type;
+ stats_req->cfg_param[0] = ar->debug.htt_stats.cfg_param[0];
+ stats_req->cfg_param[1] = ar->debug.htt_stats.cfg_param[1];
+ stats_req->cfg_param[2] = ar->debug.htt_stats.cfg_param[2];
+ stats_req->cfg_param[3] = ar->debug.htt_stats.cfg_param[3];
+ stats_req->override_cfg_param = !!stats_req->cfg_param[0] ||
+ !!stats_req->cfg_param[1] ||
+ !!stats_req->cfg_param[2] ||
+ !!stats_req->cfg_param[3];
+
+ ret = ath12k_debugfs_htt_stats_req(ar);
+ if (ret < 0)
+ goto out;
+
+ file->private_data = stats_req;
+
+ mutex_unlock(&ar->conf_mutex);
+
+ return 0;
+out:
+ kfree(stats_req);
+ ar->debug.htt_stats.stats_req = NULL;
+err_unlock:
+ mutex_unlock(&ar->conf_mutex);
+
+ return ret;
+}
+
+static int ath12k_release_htt_stats(struct inode *inode,
+ struct file *file)
+{
+ struct ath12k *ar = inode->i_private;
+
+ mutex_lock(&ar->conf_mutex);
+ kfree(file->private_data);
+ ar->debug.htt_stats.stats_req = NULL;
+ mutex_unlock(&ar->conf_mutex);
+
+ return 0;
+}
+
+static ssize_t ath12k_read_htt_stats(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct debug_htt_stats_req *stats_req = file->private_data;
+ char *buf;
+ u32 length;
+
+ buf = stats_req->buf;
+ length = min_t(u32, stats_req->buf_len, ATH12K_HTT_STATS_BUF_SIZE);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, length);
+}
+
+static const struct file_operations fops_dump_htt_stats = {
+ .open = ath12k_open_htt_stats,
+ .release = ath12k_release_htt_stats,
+ .read = ath12k_read_htt_stats,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+static ssize_t ath12k_write_htt_stats_reset(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath12k *ar = file->private_data;
+ enum ath12k_dbg_htt_ext_stats_type type;
+ struct htt_ext_stats_cfg_params cfg_params = { 0 };
+ u8 param_pos;
+ int ret;
+
+ ret = kstrtou32_from_user(user_buf, count, 0, &type);
+ if (ret)
+ return ret;
+
+ if (type >= ATH12K_DBG_HTT_NUM_EXT_STATS ||
+ type == ATH12K_DBG_HTT_EXT_STATS_RESET)
+ return -E2BIG;
+
+ mutex_lock(&ar->conf_mutex);
+ cfg_params.cfg0 = HTT_STAT_DEFAULT_RESET_START_OFFSET;
+ param_pos = (type >> 5) + 1;
+
+ switch (param_pos) {
+ case ATH12K_HTT_STATS_RESET_PARAM_CFG_32_BYTES:
+ cfg_params.cfg1 = 1 << (cfg_params.cfg0 + type);
+ break;
+ case ATH12K_HTT_STATS_RESET_PARAM_CFG_64_BYTES:
+ cfg_params.cfg2 = ATH12K_HTT_STATS_RESET_BITMAP32_BIT(cfg_params.cfg0 +
+ type);
+ break;
+ case ATH12K_HTT_STATS_RESET_PARAM_CFG_128_BYTES:
+ cfg_params.cfg3 = ATH12K_HTT_STATS_RESET_BITMAP64_BIT(cfg_params.cfg0 +
+ type);
+ break;
+ default:
+ break;
+ }
+
+ ret = ath12k_dp_tx_htt_h2t_ext_stats_req(ar,
+ ATH12K_DBG_HTT_EXT_STATS_RESET,
+ &cfg_params,
+ 0ULL);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to send htt stats request: %d\n", ret);
+ mutex_unlock(&ar->conf_mutex);
+ return ret;
+ }
+
+ ar->debug.htt_stats.reset = type;
+ mutex_unlock(&ar->conf_mutex);
+
+ return count;
+}
+
+static const struct file_operations fops_htt_stats_reset = {
+ .write = ath12k_write_htt_stats_reset,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
void ath12k_debugfs_htt_stats_init(struct ath12k *ar)
{
spin_lock_init(&ar->debug.htt_stats.lock);
debugfs_create_file("htt_stats_type", 0600, ar->debug.debugfs_pdev,
ar, &fops_htt_stats_type);
+ debugfs_create_file("htt_stats", 0400, ar->debug.debugfs_pdev,
+ ar, &fops_dump_htt_stats);
+ debugfs_create_file("htt_stats_reset", 0200, ar->debug.debugfs_pdev,
+ ar, &fops_htt_stats_reset);
}
diff --git a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h
index 6bd34d72b407..eade49d91720 100644
--- a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h
+++ b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h
@@ -7,6 +7,18 @@
#ifndef DEBUG_HTT_STATS_H
#define DEBUG_HTT_STATS_H
+#define ATH12K_HTT_STATS_BUF_SIZE (1024 * 512)
+#define ATH12K_HTT_STATS_COOKIE_LSB GENMASK_ULL(31, 0)
+#define ATH12K_HTT_STATS_COOKIE_MSB GENMASK_ULL(63, 32)
+#define ATH12K_HTT_STATS_MAGIC_VALUE 0xF0F0F0F0
+
+#define ATH12K_HTT_STATS_RESET_BITMAP32_OFFSET(_idx) ((_idx) & 0x1f)
+#define ATH12K_HTT_STATS_RESET_BITMAP64_OFFSET(_idx) ((_idx) & 0x3f)
+#define ATH12K_HTT_STATS_RESET_BITMAP32_BIT(_idx) (1 << \
+ ATH12K_HTT_STATS_RESET_BITMAP32_OFFSET(_idx))
+#define ATH12K_HTT_STATS_RESET_BITMAP64_BIT(_idx) (1 << \
+ ATH12K_HTT_STATS_RESET_BITMAP64_OFFSET(_idx))
+
void ath12k_debugfs_htt_stats_init(struct ath12k *ar);
/* htt_dbg_ext_stats_type */
@@ -17,4 +29,22 @@ enum ath12k_dbg_htt_ext_stats_type {
ATH12K_DBG_HTT_NUM_EXT_STATS,
};
+enum ath12k_htt_stats_reset_cfg_param_alloc_pos {
+ ATH12K_HTT_STATS_RESET_PARAM_CFG_32_BYTES = 1,
+ ATH12K_HTT_STATS_RESET_PARAM_CFG_64_BYTES,
+ ATH12K_HTT_STATS_RESET_PARAM_CFG_128_BYTES,
+};
+
+struct debug_htt_stats_req {
+ bool done;
+ bool override_cfg_param;
+ u8 pdev_id;
+ enum ath12k_dbg_htt_ext_stats_type type;
+ u32 cfg_param[4];
+ u8 peer_addr[ETH_ALEN];
+ struct completion htt_stats_rcvd;
+ u32 buf_len;
+ u8 buf[];
+};
+
#endif
--
2.34.1
