[PATCH] ath10k: Add support for pktlog in QCA99X0

[Vivek Natarajan]

This patch adds pktlog support for 10.4 fw versions.

Signed-off-by: Vivek Natarajan <nataraja at qti.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/hw.h  | 10 ++++++++++
 drivers/net/wireless/ath/ath10k/pci.c | 22 ++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h
index 2d87737..2fd5dc1 100644
--- a/drivers/net/wireless/ath/ath10k/hw.h
+++ b/drivers/net/wireless/ath/ath10k/hw.h
@@ -261,6 +261,16 @@ struct ath10k_pktlog_hdr {
 	u8 payload[0];
 } __packed;
 
+struct ath10k_pktlog_10_4_hdr {
+	__le16 flags;
+	__le16 missed_cnt;
+	__le16 log_type;
+	__le16 size;
+	__le32 timestamp;
+	__le32 type_specific_data;
+	u8 payload[0];
+} __packed;
+
 enum ath10k_hw_rate_ofdm {
 	ATH10K_HW_RATE_OFDM_48M = 0,
 	ATH10K_HW_RATE_OFDM_24M,
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index 5c05b0c..eb460d9 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -108,6 +108,7 @@ static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
+static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
 
 static const struct ce_attr host_ce_config_wlan[] = {
 	/* CE0: host->target HTC control and raw streams */
@@ -186,6 +187,7 @@ static const struct ce_attr host_ce_config_wlan[] = {
 		.src_nentries = 0,
 		.src_sz_max = 2048,
 		.dest_nentries = 128,
+		.recv_cb = ath10k_pci_pktlog_rx_cb,
 	},
 
 	/* CE9 target autonomous qcache memcpy */
@@ -1224,12 +1226,32 @@ static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
 	ath10k_pci_rx_post_pipe(pipe_info);
 }
 
+static void ath10k_pci_pktlog_completion_handler(struct ath10k *ar,
+						struct sk_buff *skb)
+{
+	struct ath10k_pktlog_10_4_hdr *hdr =
+		(struct ath10k_pktlog_10_4_hdr *)skb->data;
+
+	trace_ath10k_htt_pktlog(ar, hdr->payload,
+				sizeof(*hdr) + __le16_to_cpu(hdr->size));
+
+	dev_kfree_skb_any(skb);
+}
+
 /* Called by lower (CE) layer when data is received from the Target. */
 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
 {
 	ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
 }
 
+/* Called by lower (CE) layer when data is received from the Target.
+ * Only 10.4 firmware uses separate CE to transfer pktlog data.
+ */
+static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
+{
+	ath10k_pci_process_rx_cb(ce_state, ath10k_pci_pktlog_completion_handler);
+}
+
 /* Called by lower (CE) layer when a send to HTT Target completes. */
 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
 {
-- 
1.9.1