linux-kernel - Re: [PATCH] netdev/phy: Implement ieee802.3 clause 45 in mdio-octeon.c

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Date:	Wed, 03 Apr 2013 12:13:18 -0700
From:	David Daney <ddaney.cavm@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
CC:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: Re: [PATCH] netdev/phy: Implement ieee802.3 clause 45 in mdio-octeon.c

On 04/03/2013 12:08 PM, Ben Hutchings wrote:
> On Wed, 2013-04-03 at 11:16 -0700, David Daney wrote:
>> From: David Daney <david.daney@...ium.com>
>>
>> The Octeon SMI/MDIO interfaces can do clause 45 communications, so
>> implement this in the driver.
>>
>> Signed-off-by: David Daney <david.daney@...ium.com>
>> ---
>>   drivers/net/phy/mdio-octeon.c | 89 +++++++++++++++++++++++++++++++++++++++++--
>>   1 file changed, 86 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c
>> index c2c878d..f4f3abf 100644
>> --- a/drivers/net/phy/mdio-octeon.c
>> +++ b/drivers/net/phy/mdio-octeon.c
> [...]
>>   static int octeon_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
>>   {
>>   	struct octeon_mdiobus *p = bus->priv;
>>   	union cvmx_smix_cmd smi_cmd;
>>   	union cvmx_smix_rd_dat smi_rd;
>> +	unsigned int op = 1; /* MDIO_CLAUSE_22_READ */
>>   	int timeout = 1000;
>>
>> +	if (regnum & MII_ADDR_C45) {
>> +		int r = octeon_mdiobus_c45_addr(p, phy_id, regnum);
>> +		if (r < 0)
>> +			return r;
>> +
>> +		regnum = (regnum >> 16) & 0x1f;
>> +		op = 3; /* MDIO_CLAUSE_45_READ */
>> +	} else {
>> +		octeon_mdiobus_set_mode(p, C22);
>> +	}
>> +
>> +
>>   	smi_cmd.u64 = 0;
>> -	smi_cmd.s.phy_op = 1; /* MDIO_CLAUSE_22_READ */
>> +	smi_cmd.s.phy_op = op; /* MDIO_CLAUSE_22_READ */
> [...]
>
> This comment should now be removed.

You have very sharp eyes.  I will send yet another version of the patch 
with this removed.

David Daney


>
> Ben.
>

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