summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath10k/debug.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/debug.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/debug.c157
1 files changed, 156 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 3d65594fa098..760ff2289e3c 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;
@@ -260,7 +263,6 @@ void ath10k_debug_read_target_stats(struct ath10k *ar,
}
spin_unlock_bh(&ar->data_lock);
- mutex_unlock(&ar->conf_mutex);
complete(&ar->debug.event_stats_compl);
}
@@ -499,6 +501,144 @@ static const struct file_operations fops_simulate_fw_crash = {
.llseek = default_llseek,
};
+static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ unsigned int len;
+ char buf[50];
+
+ len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_chip_id = {
+ .read = ath10k_read_chip_id,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .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;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ 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)
+{
+ lockdep_assert_held(&ar->conf_mutex);
+
+ /* Must not use _sync to avoid deadlock, we do that in
+ * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
+ * warning from del_timer(). */
+ if (ar->debug.htt_stats_mask != 0)
+ cancel_delayed_work(&ar->debug.htt_stats_dwork);
+}
+
int ath10k_debug_create(struct ath10k *ar)
{
ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
@@ -507,6 +647,9 @@ 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,
@@ -518,8 +661,20 @@ int ath10k_debug_create(struct ath10k *ar)
debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_simulate_fw_crash);
+ 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;
}
+
+void ath10k_debug_destroy(struct ath10k *ar)
+{
+ cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
+}
+
#endif /* CONFIG_ATH10K_DEBUGFS */
#ifdef CONFIG_ATH10K_DEBUG