diff options
| author | Claudiu Manoil <claudiu.manoil@freescale.com> | 2013-08-12 12:53:26 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-14 00:28:53 +0200 |
| commit | 23402bddf9e56eecb27bbd1e5467b3b79b3dbe58 (patch) | |
| tree | 26dc3784f50481c3ac8457abccd54bd7aec1748a /drivers/net/ethernet/freescale/gianfar.h | |
| parent | pptp: fix byte order warnings (diff) | |
| download | linux-23402bddf9e56eecb27bbd1e5467b3b79b3dbe58.tar.xz linux-23402bddf9e56eecb27bbd1e5467b3b79b3dbe58.zip | |
gianfar: Add flow control support
eTSEC has Rx and Tx flow control capabilities that may be enabled
through MACCFG1[Rx_Flow, Tx_Flow] bits. These bits must not be set
however when eTSEC is operated in Half-Duplex mode. Unfortunately,
the driver currently sets these bits unconditionally.
This patch adds the proper handling of the PAUSE frame capability
register bits by implementing the ethtool -A interface. When pause
autoneg is enabled, the controller uses the phy's capability to
negotiate PAUSE frame settings with the link partner and reconfigures
its Rx_Flow and Tx_Flow settings to match the capabilities of the
link partner. If pause autoneg is off, the PAUSE frame generation
may be forced manually (ethtool -A). Flow control is disabled by
default now.
This implementation is inspired by the tg3 driver.
Signed-off-by: Lutz Jaenicke <ljaenicke@innominate.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/gianfar.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h index ee19f2c138a6..46f56f36118f 100644 --- a/drivers/net/ethernet/freescale/gianfar.h +++ b/drivers/net/ethernet/freescale/gianfar.h @@ -146,6 +146,10 @@ extern const char gfar_driver_version[]; | SUPPORTED_Autoneg \ | SUPPORTED_MII) +#define GFAR_SUPPORTED_GBIT (SUPPORTED_1000baseT_Full \ + | SUPPORTED_Pause \ + | SUPPORTED_Asym_Pause) + /* TBI register addresses */ #define MII_TBICON 0x11 @@ -1100,7 +1104,11 @@ struct gfar_private { /* Wake-on-LAN enabled */ wol_en:1, /* Enable priorty based Tx scheduling in Hw */ - prio_sched_en:1; + prio_sched_en:1, + /* Flow control flags */ + pause_aneg_en:1, + tx_pause_en:1, + rx_pause_en:1; /* The total tx and rx ring size for the enabled queues */ unsigned int total_tx_ring_size; |