On 14/07/15 10:11, Stas Sergeev wrote:
>
> Currently fixed_phy driver recognizes only the link-up state.
> This simple patch adds an implementation of link-down state.
> It fixes the status registers when link is down, and also allows
> to register the fixed-phy with link down without specifying the speed.
>
> Signed-off-by: Stas Sergeev <s...@users.sourceforge.net>
This does not quite seem to work for me here on two different setups
that use fixed PHYs:
Before patch link up:
# ethtool moca
Settings for moca:
Supported ports: [ TP AUI BNC MII FIBRE ]
Supported link modes: 1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Half 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Link partner advertised link modes: 1000baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: No
Speed: 1000Mb/s
Duplex: Full
Port: BNC
PHYAD: 2
Transceiver: external
Auto-negotiation: on
Supports Wake-on: gs
Wake-on: d
SecureOn password: 00:00:00:00:00:00
Link detected: yes
#
Before patch link down:
# ethtool moca
Settings for moca:
Supported ports: [ TP AUI BNC MII FIBRE ]
Supported link modes: 1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Half 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 1000Mb/s
Duplex: Full
Port: BNC
PHYAD: 2
Transceiver: external
Auto-negotiation: off
Supports Wake-on: gs
Wake-on: d
SecureOn password: 00:00:00:00:00:00
Link detected: no
#
After patch link up:
# ethtool moca
Settings for moca:
Supported ports: [ TP AUI BNC MII FIBRE ]
Supported link modes: 1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Half 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: No
Speed: 10Mb/s <---- this is not quite the speed we want
Duplex: Full
Port: BNC
PHYAD: 2
Transceiver: external
Auto-negotiation: on
Supports Wake-on: gs
Wake-on: d
SecureOn password: 00:00:00:00:00:00
Link detected: yes
#
After patch link down:
# ethtool moca
Settings for moca:
Supported ports: [ TP AUI BNC MII FIBRE ]
Supported link modes: 1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Half 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10Mb/s
Duplex: Half
Port: BNC
PHYAD: 2
Transceiver: external
Auto-negotiation: off
Supports Wake-on: gs
Wake-on: d
SecureOn password: 00:00:00:00:00:00
Link detected: no
#
Does it behave properly for you?
>
> CC: Florian Fainelli <f.faine...@gmail.com>
> CC: netdev@vger.kernel.org
> CC: linux-ker...@vger.kernel.org
> ---
> drivers/net/phy/fixed_phy.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
> index 1960b46..479b93f 100644
> --- a/drivers/net/phy/fixed_phy.c
> +++ b/drivers/net/phy/fixed_phy.c
> @@ -52,6 +52,10 @@ static int fixed_phy_update_regs(struct fixed_phy *fp)
> u16 lpagb = 0;
> u16 lpa = 0;
>
> + if (!fp->status.link)
> + goto done;
> + bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
> +
> if (fp->status.duplex) {
> bmcr |= BMCR_FULLDPLX;
>
> @@ -96,15 +100,13 @@ static int fixed_phy_update_regs(struct fixed_phy *fp)
> }
> }
>
> - if (fp->status.link)
> - bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
> -
> if (fp->status.pause)
> lpa |= LPA_PAUSE_CAP;
>
> if (fp->status.asym_pause)
> lpa |= LPA_PAUSE_ASYM;
>
> +done:
> fp->regs[MII_PHYSID1] = 0;
> fp->regs[MII_PHYSID2] = 0;
>
--
Florian
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