gianfar: Support NAPI for TX Frames
Poll the completed TX frames in gfar_poll(). This prevents the tx
completion interrupt from interfering with processing of received
frames.
We also disable hardware rx coalescing when NAPI is enabled.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index ea8671f..0d08836 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -126,9 +126,16 @@
#define DEFAULT_TXCOUNT 16
#define DEFAULT_TXTIME 21
+#define DEFAULT_RXTIME 21
+
+/* Non NAPI Case */
+#ifndef CONFIG_GFAR_NAPI
#define DEFAULT_RX_COALESCE 1
#define DEFAULT_RXCOUNT 16
-#define DEFAULT_RXTIME 21
+#else
+#define DEFAULT_RX_COALESCE 0
+#define DEFAULT_RXCOUNT 0
+#endif /* CONFIG_GFAR_NAPI */
#define TBIPA_VALUE 0x1f
#define MIIMCFG_INIT_VALUE 0x00000007
@@ -242,6 +249,7 @@
#define IEVENT_PERR 0x00000001
#define IEVENT_RX_MASK (IEVENT_RXB0 | IEVENT_RXF0)
#define IEVENT_TX_MASK (IEVENT_TXB | IEVENT_TXF)
+#define IEVENT_RTX_MASK (IEVENT_RX_MASK | IEVENT_TX_MASK)
#define IEVENT_ERR_MASK \
(IEVENT_RXC | IEVENT_BSY | IEVENT_EBERR | IEVENT_MSRO | \
IEVENT_BABT | IEVENT_TXC | IEVENT_TXE | IEVENT_LC \
@@ -269,11 +277,12 @@
#define IMASK_FIQ 0x00000004
#define IMASK_DPE 0x00000002
#define IMASK_PERR 0x00000001
-#define IMASK_RX_DISABLED ~(IMASK_RXFEN0 | IMASK_BSY)
#define IMASK_DEFAULT (IMASK_TXEEN | IMASK_TXFEN | IMASK_TXBEN | \
IMASK_RXFEN0 | IMASK_BSY | IMASK_EBERR | IMASK_BABR | \
IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \
| IMASK_PERR)
+#define IMASK_RTX_DISABLED ((~(IMASK_RXFEN0 | IMASK_TXFEN | IMASK_BSY)) \
+ & IMASK_DEFAULT)
/* Fifo management */
#define FIFO_TX_THR_MASK 0x01ff