wil6210: RX high threshold interrupt configuration

Rx high threshold interrupt is reported by the hardware in case
when number of not utilized by the HW descriptors in the Rx ring
becomes low.
Introduce module parameter for RX high threshold.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
index d28615369d20d8f6e44f9e0783a04926a9eb30dd..f44b640dff79058ed0690cbc69ff4dc068f0c6ed 100644 (file)
--- a/drivers/net/wireless/ath/wil6210/main.c
+++ b/drivers/net/wireless/ath/wil6210/main.c
@@ -61,6 +61,13 @@ module_param(rx_max_burst_duration, uint, S_IRUGO);
 MODULE_PARM_DESC(rx_max_burst_duration,
                 " Interrupt moderation RX max burst duration, usecs.");
 
+/* if not set via modparam, will be set to default value of 1/8 of
+ * rx ring size during init flow
+ */
+unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT;
+module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO);
+MODULE_PARM_DESC(rx_ring_overflow_thrsh,
+                " RX ring overflow threshold in descriptors.");
 
 /* We allow allocation of more than 1 page buffers to support large packets.
  * It is suboptimal behavior performance wise in case MTU above page size.
@@ -456,6 +463,8 @@ int wil_priv_init(struct wil6210_priv *wil)
        wil->tx_max_burst_duration = tx_max_burst_duration;
        wil->rx_max_burst_duration = rx_max_burst_duration;
 
+       if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT)
+               rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT;
        return 0;
 
 out_wmi_wq:

diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index a6d63c157b2f0b8b4064d1f8427f2b574d926899..da3fe7853d6379ca61651944e39bc0ace3e0cf2c 100644 (file)
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h
@@ -25,6 +25,7 @@
 
 extern bool no_fw_recovery;
 extern unsigned int mtu_max;
+extern unsigned short rx_ring_overflow_thrsh;
 extern int agg_wsize;
 
 #define WIL_NAME "wil6210"
@@ -83,7 +84,9 @@ static inline u32 wil_mtu2macbuf(u32 mtu)
 #define WIL6210_FW_RECOVERY_RETRIES    (5) /* try to recover this many times */
 #define WIL6210_FW_RECOVERY_TO msecs_to_jiffies(5000)
 #define WIL6210_SCAN_TO                msecs_to_jiffies(10000)
-
+#define WIL6210_RX_HIGH_TRSH_INIT              (0)
+#define WIL6210_RX_HIGH_TRSH_DEFAULT \
+                               (1 << (WIL_RX_RING_SIZE_ORDER_DEFAULT - 3))
 /* Hardware definitions begin */
 
 /*

diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index a4b30a40cefaf28de1d03d76ba001b180f328186..432ec55298f291ccdde964a61cba25540946a5aa 100644 (file)
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -1090,6 +1090,7 @@ int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
                .mid = 0, /* TODO - what is it? */
                .decap_trans_type = WMI_DECAP_TYPE_802_3,
                .reorder_type = WMI_RX_SW_REORDER,
+               .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
        };
        struct {
                struct wil6210_mbox_hdr_wmi wmi;