Sorry!
I have to re-send the email since previous one was rejected due to HTML format.
Best Regards,
Shaohui Xie
From: Xie Shaohui-B21989
Sent: Friday, July 31, 2015 12:09 PM
To: netdev@vger.kernel.org; 'David Miller'
Subject: how to access PHY's registers from user space
Hello All,
Is there a general way in user space to access C45 PHY's registers, like
dumping some registers?
mii-tool seems obsolete, especially, it cannot support PHYs accessed through
Clause 45.
ethtool seems does not support this operation.
PHY lib API phy_mii_ioctl() seems also obsolete, data structure it used is not
suitable for C45 PHYs.
/* This structure is used in all SIOCxMIIxxx ioctl calls */
struct mii_ioctl_data {
__u16 phy_id;
__u16 reg_num;
__u16 val_in;
__u16 val_out;
};
What should be a proper way to implement accessing PHY's registers in user
space?
To modify the phy_mii_ioctl() to support C45 PHYs?
Then how about the user space application, should it also be improved?
Or to add sysfs support to a specific PHY's driver if this PHY is interested,
is this acceptable in upstream?
Welcome to comments!
Best Regards,
Shaohui Xie
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