cw1200: New debugfs entry for firmware counters

New R/O entry /sys/kernel/debug/ieee80211/phy0/cw1200/counters
provides access to low-level PHY counters in firmware.

ST-Ericsson ID: 365735

Change-Id: I6fdfade61791cdf3dc28e1477ae3d7bf5a217d1f
Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/32996
Reviewed-by: QABUILD
Reviewed-by: Bartosz MARKOWSKI <bartosz.markowski@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/33537
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>

2 files changed, 95 insertions, 1 deletions

diff --git a/drivers/staging/cw1200/debug.c b/drivers/staging/cw1200/debug.c
index 2cfb0ee17cb..3715678d522 100644
--- a/drivers/staging/cw1200/debug.c
+++ b/drivers/staging/cw1200/debug.c
@@ -309,6 +309,64 @@ static const struct file_operations fops_status = {
 	.owner = THIS_MODULE,
 };
 
+static int cw1200_counters_show(struct seq_file *seq, void *v)
+{
+	int ret;
+	struct cw1200_common *priv = seq->private;
+	struct wsm_counters_table counters;
+
+	ret = wsm_get_counters_table(priv, &counters);
+	if (ret)
+		return ret;
+
+#define CAT_STR(x, y) x ## y
+#define PUT_COUNTER(tab, name) \
+	seq_printf(seq, "%s:" tab "%d\n", #name, \
+		__le32_to_cpu(counters.CAT_STR(count, name)))
+
+	PUT_COUNTER("\t\t", PlcpErrors);
+	PUT_COUNTER("\t\t", FcsErrors);
+	PUT_COUNTER("\t\t", TxPackets);
+	PUT_COUNTER("\t\t", RxPackets);
+	PUT_COUNTER("\t\t", RxPacketErrors);
+	PUT_COUNTER("\t",   RxDecryptionFailures);
+	PUT_COUNTER("\t\t", RxMicFailures);
+	PUT_COUNTER("\t",   RxNoKeyFailures);
+	PUT_COUNTER("\t",   TxMulticastFrames);
+	PUT_COUNTER("\t",   TxFramesSuccess);
+	PUT_COUNTER("\t",   TxFrameFailures);
+	PUT_COUNTER("\t",   TxFramesRetried);
+	PUT_COUNTER("\t",   TxFramesMultiRetried);
+	PUT_COUNTER("\t",   RxFrameDuplicates);
+	PUT_COUNTER("\t\t", RtsSuccess);
+	PUT_COUNTER("\t\t", RtsFailures);
+	PUT_COUNTER("\t\t", AckFailures);
+	PUT_COUNTER("\t",   RxMulticastFrames);
+	PUT_COUNTER("\t",   RxFramesSuccess);
+	PUT_COUNTER("\t",   RxCMACICVErrors);
+	PUT_COUNTER("\t\t", RxCMACReplays);
+	PUT_COUNTER("\t",   RxMgmtCCMPReplays);
+
+#undef PUT_COUNTER
+#undef CAT_STR
+
+	return 0;
+}
+
+static int cw1200_counters_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, &cw1200_counters_show,
+		inode->i_private);
+}
+
+static const struct file_operations fops_counters = {
+	.open = cw1200_counters_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
 int cw1200_debug_init(struct cw1200_common *priv)
 {
 	struct cw1200_debug_priv *d = kzalloc(sizeof(struct cw1200_debug_priv),
@@ -326,6 +384,10 @@ int cw1200_debug_init(struct cw1200_common *priv)
 			priv, &fops_status))
 		goto err;
 
+	if (!debugfs_create_file("counters", S_IRUSR, d->debugfs_phy,
+			priv, &fops_counters))
+		goto err;
+
 	return 0;
 
 err:
diff --git a/drivers/staging/cw1200/wsm.h b/drivers/staging/cw1200/wsm.h
index adb34765c5c..11e18005200 100644
--- a/drivers/staging/cw1200/wsm.h
+++ b/drivers/staging/cw1200/wsm.h
@@ -1266,7 +1266,39 @@ static inline int wsm_set_rcpi_rssi_threshold(struct cw1200_common *priv,
 			     sizeof(*arg));
 }
 
-static inline int wsm_get_station_id(struct cw1200_common *priv, u8 * mac)
+struct wsm_counters_table {
+	__le32 countPlcpErrors;
+	__le32 countFcsErrors;
+	__le32 countTxPackets;
+	__le32 countRxPackets;
+	__le32 countRxPacketErrors;
+	__le32 countRxDecryptionFailures;
+	__le32 countRxMicFailures;
+	__le32 countRxNoKeyFailures;
+	__le32 countTxMulticastFrames;
+	__le32 countTxFramesSuccess;
+	__le32 countTxFrameFailures;
+	__le32 countTxFramesRetried;
+	__le32 countTxFramesMultiRetried;
+	__le32 countRxFrameDuplicates;
+	__le32 countRtsSuccess;
+	__le32 countRtsFailures;
+	__le32 countAckFailures;
+	__le32 countRxMulticastFrames;
+	__le32 countRxFramesSuccess;
+	__le32 countRxCMACICVErrors;
+	__le32 countRxCMACReplays;
+	__le32 countRxMgmtCCMPReplays;
+};
+
+static inline int wsm_get_counters_table(struct cw1200_common *priv,
+					 struct wsm_counters_table *arg)
+{
+	return wsm_read_mib(priv, WSM_MIB_ID_COUNTERS_TABLE,
+			arg, sizeof(*arg));
+}
+
+static inline int wsm_get_station_id(struct cw1200_common *priv, u8 *mac)
 {
 	return wsm_read_mib(priv, WSM_MIB_ID_DOT11_STATION_ID, mac, ETH_ALEN);
 }