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ethtool, mdio, mii: Specify MDIO information fields in struct ethtool_cmd

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Add comments for ethtool_cmd::phy_address and
ethtool_cmd::mdio_support, and definitions of the flags currently
used in mdio_support.

In the mdio library, assert that its own flags continue to match those
in the ethtool interface.

In the mii library, use the ethtool flag definition and stop
including <linux/mdio.h>.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2012-02-29 14:26:22 +00:00 • committed by David S. Miller
parent 9c717758c9
commit 9c4df53bc3
3 changed files with 26 additions and 4 deletions
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23
include/linux/ethtool.h
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@ -30,10 +30,15 @@ struct ethtool_cmd {
* access it */
__u8 duplex; /* Duplex, half or full */
__u8 port; /* Which connector port */
__u8 phy_address;
__u8 phy_address; /* MDIO PHY address (PRTAD for clause 45).
* May be read-only or read-write
* depending on the driver.
*/
__u8 transceiver; /* Which transceiver to use */
__u8 autoneg; /* Enable or disable autonegotiation */
__u8 mdio_support;
__u8 mdio_support; /* MDIO protocols supported. Read-only.
* Not set by all drivers.
*/
__u32 maxtxpkt; /* Tx pkts before generating tx int */
__u32 maxrxpkt; /* Rx pkts before generating rx int */
__u16 speed_hi; /* The forced speed (upper
@ -59,6 +64,20 @@ static inline __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
return (ep->speed_hi << 16) | ep->speed;
}
/* Device supports clause 22 register access to PHY or peripherals
* using the interface defined in <linux/mii.h>. This should not be
* set if there are known to be no such peripherals present or if
* the driver only emulates clause 22 registers for compatibility.
*/
#define ETH_MDIO_SUPPORTS_C22 1
/* Device supports clause 45 register access to PHY or peripherals
* using the interface defined in <linux/mii.h> and <linux/mdio.h>.
* This should not be set if there are known to be no such peripherals
* present.
*/
#define ETH_MDIO_SUPPORTS_C45 2
#define ETHTOOL_FWVERS_LEN 32
#define ETHTOOL_BUSINFO_LEN 32
/* these strings are set to whatever the driver author decides... */