[PATCH 3/3] ath10k: add htt_stats_enable debugfs file
Kalle Valo
kvalo at qca.qualcomm.com
Tue Sep 3 04:44:10 EDT 2013
Signed-off-by: Kalle Valo <kvalo at qca.qualcomm.com>
---
drivers/net/wireless/ath/ath10k/core.h | 3 +
drivers/net/wireless/ath/ath10k/debug.c | 111 ++++++++++++++++++++++++++++++
drivers/net/wireless/ath/ath10k/htt.h | 1
drivers/net/wireless/ath/ath10k/htt_tx.c | 42 +++++++++++
4 files changed, 157 insertions(+)
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 174c4b4..22b17d6 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -246,6 +246,9 @@ struct ath10k_debug {
u32 wmi_service_bitmap[WMI_SERVICE_BM_SIZE];
struct completion event_stats_compl;
+
+ unsigned long htt_stats_mask;
+ struct delayed_work htt_stats_dwork;
};
enum ath10k_state {
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 219d469..59615c7 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -21,6 +21,9 @@
#include "core.h"
#include "debug.h"
+/* ms */
+#define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
+
static int ath10k_printk(const char *level, const char *fmt, ...)
{
struct va_format vaf;
@@ -517,13 +520,115 @@ static const struct file_operations fops_chip_id = {
.llseek = default_llseek,
};
+static int ath10k_debug_htt_stats_req(struct ath10k *ar)
+{
+ u64 cookie;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ if (ar->debug.htt_stats_mask == 0)
+ /* htt stats are disabled */
+ return 0;
+
+ if (ar->state != ATH10K_STATE_ON)
+ return 0;
+
+ cookie = get_jiffies_64();
+
+ ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
+ cookie);
+ if (ret) {
+ ath10k_warn("failed to send htt stats request: %d\n", ret);
+ return ret;
+ }
+
+ queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
+ msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
+
+ return 0;
+}
+
+static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
+{
+ struct ath10k *ar = container_of(work, struct ath10k,
+ debug.htt_stats_dwork.work);
+
+ mutex_lock(&ar->conf_mutex);
+
+ ath10k_debug_htt_stats_req(ar);
+
+ mutex_unlock(&ar->conf_mutex);
+}
+
+static ssize_t ath10k_read_htt_stats_mask(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ char buf[32];
+ unsigned int len;
+
+ len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath10k_write_htt_stats_mask(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ unsigned long mask;
+ int ret;
+
+ ret = kstrtoul_from_user(user_buf, count, 0, &mask);
+ if (ret)
+ return ret;
+
+ /* max 8 bit masks (for now) */
+ if (mask > 0xff)
+ return -E2BIG;
+
+ mutex_lock(&ar->conf_mutex);
+
+ ar->debug.htt_stats_mask = mask;
+
+ ret = ath10k_debug_htt_stats_req(ar);
+ if (ret)
+ goto out;
+
+ ret = count;
+
+out:
+ mutex_unlock(&ar->conf_mutex);
+
+ return ret;
+}
+
+static const struct file_operations fops_htt_stats_mask = {
+ .read = ath10k_read_htt_stats_mask,
+ .write = ath10k_write_htt_stats_mask,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
int ath10k_debug_start(struct ath10k *ar)
{
+ int ret;
+
+ ret = ath10k_debug_htt_stats_req(ar);
+ if (ret)
+ /* continue normally anyway, this isn't serious */
+ ath10k_warn("failed to start htt stats workqueue: %d\n", ret);
+
return 0;
}
void ath10k_debug_stop(struct ath10k *ar)
{
+ cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
}
int ath10k_debug_create(struct ath10k *ar)
@@ -534,6 +639,9 @@ int ath10k_debug_create(struct ath10k *ar)
if (!ar->debug.debugfs_phy)
return -ENOMEM;
+ INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
+ ath10k_debug_htt_stats_dwork);
+
init_completion(&ar->debug.event_stats_compl);
debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
@@ -548,6 +656,9 @@ int ath10k_debug_create(struct ath10k *ar)
debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_chip_id);
+ debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
+ ar, &fops_htt_stats_mask);
+
return 0;
}
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index 26c78a9..e090902 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -1327,6 +1327,7 @@ void ath10k_htt_rx_detach(struct ath10k_htt *htt);
void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb);
void ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb);
int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt);
+int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie);
int ath10k_htt_send_rx_ring_cfg_ll(struct ath10k_htt *htt);
void __ath10k_htt_tx_dec_pending(struct ath10k_htt *htt);
diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index d4fb387..b6b1420 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -203,6 +203,48 @@ int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt)
return 0;
}
+int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie)
+{
+ struct htt_stats_req *req;
+ struct sk_buff *skb;
+ struct htt_cmd *cmd;
+ int len = 0, ret;
+
+ len += sizeof(cmd->hdr);
+ len += sizeof(cmd->stats_req);
+
+ skb = ath10k_htc_alloc_skb(len);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_put(skb, len);
+ cmd = (struct htt_cmd *)skb->data;
+ cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_STATS_REQ;
+
+ req = &cmd->stats_req;
+
+ memset(req, 0, sizeof(*req));
+
+ /* currently we support only max 8 bit masks so no need to worry
+ * about endian support */
+ req->upload_types[0] = mask;
+ req->reset_types[0] = mask;
+ req->stat_type = HTT_STATS_REQ_CFG_STAT_TYPE_INVALID;
+ req->cookie_lsb = cpu_to_le32(cookie & 0xffffffff);
+ req->cookie_msb = cpu_to_le32((cookie & 0xffffffff00000000ULL) >> 32);
+
+ ATH10K_SKB_CB(skb)->htt.is_conf = true;
+
+ ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
+ if (ret) {
+ ath10k_warn("failed to send htt type stats request: %d", ret);
+ dev_kfree_skb_any(skb);
+ return ret;
+ }
+
+ return 0;
+}
+
int ath10k_htt_send_rx_ring_cfg_ll(struct ath10k_htt *htt)
{
struct sk_buff *skb;
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