xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: fec: add interrupt coalescence feature support

Browse Source 
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>
This commit is contained in:
Fugang Duan
2014-09-17 05:18:52 +08:00
committed by David S. Miller
parent b7bd75cf53
commit d851b47b22
2 changed files with 151 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/net/ethernet/freescale/fec.h
View File

@@ -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);