3 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index fd3b2b3d1b5c..50dc30e5bb79 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -959,6 +959,18 @@ static const struct file_operations fops_pmcdata = {
 	.llseek		= wil_pmc_llseek,
 };
 
+static int wil_pmcring_seq_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, wil_pmcring_read, inode->i_private);
+}
+
+static const struct file_operations fops_pmcring = {
+	.open		= wil_pmcring_seq_open,
+	.release	= single_release,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+};
+
 /*---tx_mgmt---*/
 /* Write mgmt frame to this file to send it */
 static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
@@ -2371,6 +2383,7 @@ static const struct {
 	{"back",	0644,		&fops_back},
 	{"pmccfg",	0644,		&fops_pmccfg},
 	{"pmcdata",	0444,		&fops_pmcdata},
+	{"pmcring",	0444,		&fops_pmcring},
 	{"temp",	0444,		&temp_fops},
 	{"freq",	0444,		&freq_fops},
 	{"link",	0444,		&link_fops},
diff --git a/drivers/net/wireless/ath/wil6210/pmc.c b/drivers/net/wireless/ath/wil6210/pmc.c
index c49f7988369e..4b7ac14fc2a7 100644
--- a/drivers/net/wireless/ath/wil6210/pmc.c
+++ b/drivers/net/wireless/ath/wil6210/pmc.c
@@ -18,6 +18,7 @@
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
+#include <linux/seq_file.h>
 #include "wmi.h"
 #include "wil6210.h"
 #include "txrx.h"
@@ -431,3 +432,28 @@ out:
 
 	return newpos;
 }
+
+int wil_pmcring_read(struct seq_file *s, void *data)
+{
+	struct wil6210_priv *wil = s->private;
+	struct pmc_ctx *pmc = &wil->pmc;
+	size_t pmc_ring_size =
+		sizeof(struct vring_rx_desc) * pmc->num_descriptors;
+
+	mutex_lock(&pmc->lock);
+
+	if (!wil_is_pmc_allocated(pmc)) {
+		wil_err(wil, "error, pmc is not allocated!\n");
+		pmc->last_cmd_status = -EPERM;
+		mutex_unlock(&pmc->lock);
+		return -EPERM;
+	}
+
+	wil_dbg_misc(wil, "pmcring_read: size %zu\n", pmc_ring_size);
+
+	seq_write(s, pmc->pring_va, pmc_ring_size);
+
+	mutex_unlock(&pmc->lock);
+
+	return 0;
+}
diff --git a/drivers/net/wireless/ath/wil6210/pmc.h b/drivers/net/wireless/ath/wil6210/pmc.h
index bebc8d52e1e6..92b8c4d84a6a 100644
--- a/drivers/net/wireless/ath/wil6210/pmc.h
+++ b/drivers/net/wireless/ath/wil6210/pmc.h
@@ -25,3 +25,4 @@ void wil_pmc_free(struct wil6210_priv *wil, int send_pmc_cmd);
 int wil_pmc_last_cmd_status(struct wil6210_priv *wil);
 ssize_t wil_pmc_read(struct file *, char __user *, size_t, loff_t *);
 loff_t wil_pmc_llseek(struct file *filp, loff_t off, int whence);
+int wil_pmcring_read(struct seq_file *s, void *data);