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| author | Tom Rini <trini@konsulko.com> | 2017-08-14 17:06:58 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-08-14 17:06:58 -0400 |
| commit | 248a3f6c7ce01965f0303416645c8884013acabb (patch) | |
| tree | 50ad2df141aae9b9e545a5e2108dee0c53c0c7fd /include | |
| parent | 5abc1a4523a5509ce37bc3ec818b660a48f4eafd (diff) | |
| parent | a5fe87e829487cb5589afba3b5d8c3adff3b077d (diff) | |
| download | u-boot-248a3f6c7ce01965f0303416645c8884013acabb.tar.gz | |
Merge git://git.denx.de/u-boot-net
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mii.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/mii.h b/include/linux/mii.h index 66b83d83de..19afb746cd 100644 --- a/include/linux/mii.h +++ b/include/linux/mii.h @@ -190,4 +190,27 @@ static inline unsigned int mii_duplex (unsigned int duplex_lock, return 0; } +/** + * mii_resolve_flowctrl_fdx + * @lcladv: value of MII ADVERTISE register + * @rmtadv: value of MII LPA register + * + * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3 + */ +static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) +{ + u8 cap = 0; + + if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) { + cap = FLOW_CTRL_TX | FLOW_CTRL_RX; + } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) { + if (lcladv & ADVERTISE_PAUSE_CAP) + cap = FLOW_CTRL_RX; + else if (rmtadv & ADVERTISE_PAUSE_CAP) + cap = FLOW_CTRL_TX; + } + + return cap; +} + #endif /* __LINUX_MII_H__ */ |