diff options
| author |   Fugang Duan <B38611@freescale.com> | 2014-09-17 05:18:52 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-09-19 15:36:50 -0400 |
| commit | d851b47b22fc4c7b5a739fc5cbc2cbee07adec90 (patch) | |
| tree | 44cbdd531de3aee90b15b2d5154020fde2f9b3d8 /drivers/net/ethernet/freescale/fec.h | |
| parent | net: fec: refine error handle of parser queue number from DT (diff) | |
| download | linux-dev-d851b47b22fc4c7b5a739fc5cbc2cbee07adec90.tar.xz linux-dev-d851b47b22fc4c7b5a739fc5cbc2cbee07adec90.zip | |
net: fec: add interrupt coalescence feature support
i.MX6 SX support interrupt coalescence feature
By default, init the interrupt coalescing frame count threshold and
timer threshold.
Supply the ethtool interfaces as below for user tuning to improve
enet performance:
rx_max_coalesced_frames
rx_coalesce_usecs
tx_max_coalesced_frames
tx_coalesce_usecs
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/fec.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index e1bcb4fc244a..e4eb89742ece 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -355,6 +355,14 @@ struct bufdesc_ex { #define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII | FEC_ENET_TS_TIMER) #define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF)) +/* ENET interrupt coalescing macro define */ +#define FEC_ITR_CLK_SEL (0x1 << 30) +#define FEC_ITR_EN (0x1 << 31) +#define FEC_ITR_ICFT(X) ((X & 0xFF) << 20) +#define FEC_ITR_ICTT(X) ((X) & 0xFFFF) +#define FEC_ITR_ICFT_DEFAULT 200 /* Set 200 frame count threshold */ +#define FEC_ITR_ICTT_DEFAULT 1000 /* Set 1000us timer threshold */ + #define FEC_VLAN_TAG_LEN 0x04 #define FEC_ETHTYPE_LEN 0x02 @@ -466,6 +474,13 @@ struct fec_enet_private { unsigned int tx_align; unsigned int rx_align; + + /* hw interrupt coalesce */ + unsigned int rx_pkts_itr; + unsigned int rx_time_itr; + unsigned int tx_pkts_itr; + unsigned int tx_time_itr; + unsigned int itr_clk_rate; }; void fec_ptp_init(struct platform_device *pdev); |