[PATCH net-next v2 4/8] net: mii: extend link mode support to 48 bits

From: David Decotigny
Date: Mon Jan 05 2015 - 21:55:11 EST

From: David Decotigny <decot@xxxxxxxxxxxx>

Signed-off-by: David Decotigny <decot@xxxxxxxxxxxx>
---
drivers/net/mii.c | 52 +++++++++++++++++++++++++++++-----------------------
include/linux/mii.h | 31 ++++++++++++++++---------------
2 files changed, 45 insertions(+), 38 deletions(-)

diff --git a/drivers/net/mii.c b/drivers/net/mii.c
index 4a99c39..2be59ba 100644
--- a/drivers/net/mii.c
+++ b/drivers/net/mii.c
@@ -33,7 +33,7 @@
#include <linux/ethtool.h>
#include <linux/mii.h>

-static u32 mii_get_an(struct mii_if_info *mii, u16 addr)
+static ethtool_link_mode_mask_t mii_get_an(struct mii_if_info *mii, u16 addr)
{
int advert;

@@ -56,14 +56,15 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
{
struct net_device *dev = mii->dev;
u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
- u32 nego;
+ ethtool_link_mode_mask_t supported_link_modes, advertising_link_modes;
+ ethtool_link_mode_mask_t nego;

- ecmd->supported =
+ supported_link_modes =
(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
if (mii->supports_gmii)
- ecmd->supported |= SUPPORTED_1000baseT_Half |
+ supported_link_modes |= SUPPORTED_1000baseT_Half |
SUPPORTED_1000baseT_Full;

/* only supports twisted-pair */
@@ -76,7 +77,7 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
ecmd->phy_address = mii->phy_id;
ecmd->mdio_support = ETH_MDIO_SUPPORTS_C22;

- ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
+ advertising_link_modes = ADVERTISED_TP | ADVERTISED_MII;

bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
@@ -85,23 +86,25 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
}
if (bmcr & BMCR_ANENABLE) {
- ecmd->advertising |= ADVERTISED_Autoneg;
+ ethtool_link_mode_mask_t lp_adv;
+
+ advertising_link_modes |= ADVERTISED_Autoneg;
ecmd->autoneg = AUTONEG_ENABLE;

- ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);
+ advertising_link_modes |= mii_get_an(mii, MII_ADVERTISE);
if (mii->supports_gmii)
- ecmd->advertising |=
+ advertising_link_modes |=
mii_ctrl1000_to_ethtool_adv_t(ctrl1000);

if (bmsr & BMSR_ANEGCOMPLETE) {
- ecmd->lp_advertising = mii_get_an(mii, MII_LPA);
- ecmd->lp_advertising |=
- mii_stat1000_to_ethtool_lpa_t(stat1000);
+ lp_adv = mii_get_an(mii, MII_LPA);
+ lp_adv |= mii_stat1000_to_ethtool_lpa_t(stat1000);
} else {
- ecmd->lp_advertising = 0;
+ lp_adv = 0;
}

- nego = ecmd->advertising & ecmd->lp_advertising;
+ ethtool_cmd_lp_advertising_set(ecmd, lp_adv);
+ nego = advertising_link_modes & lp_adv;

if (nego & (ADVERTISED_1000baseT_Full |
ADVERTISED_1000baseT_Half)) {
@@ -128,6 +131,8 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
}

mii->full_duplex = ecmd->duplex;
+ ethtool_cmd_supported_set(ecmd, supported_link_modes);
+ ethtool_cmd_advertising_set(ecmd, advertising_link_modes);

/* ignore maxtxpkt, maxrxpkt for now */

@@ -168,13 +173,15 @@ int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
if (ecmd->autoneg == AUTONEG_ENABLE) {
u32 bmcr, advert, tmp;
u32 advert2 = 0, tmp2 = 0;
-
- if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full |
- ADVERTISED_1000baseT_Half |
- ADVERTISED_1000baseT_Full)) == 0)
+ ethtool_link_mode_mask_t ethtool_adv;
+
+ ethtool_adv = ethtool_cmd_advertising(ecmd);
+ if ((ethtool_adv & (ADVERTISED_10baseT_Half |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half |
+ ADVERTISED_100baseT_Full |
+ ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseT_Full)) == 0)
return -EINVAL;

/* advertise only what has been requested */
@@ -184,11 +191,10 @@ int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
}
- tmp |= ethtool_adv_to_mii_adv_t(ecmd->advertising);
+ tmp |= ethtool_adv_to_mii_adv_t(ethtool_adv);

if (mii->supports_gmii)
- tmp2 |=
- ethtool_adv_to_mii_ctrl1000_t(ecmd->advertising);
+ tmp2 |= ethtool_adv_to_mii_ctrl1000_t(ethtool_adv);
if (advert != tmp) {
mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
mii->advertising = tmp;
diff --git a/include/linux/mii.h b/include/linux/mii.h
index 47492c9..6f5336c 100644
--- a/include/linux/mii.h
+++ b/include/linux/mii.h
@@ -106,7 +106,7 @@ static inline unsigned int mii_duplex (unsigned int duplex_lock,
* settings to phy autonegotiation advertisements for the
* MII_ADVERTISE register.
*/
-static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
+static inline u32 ethtool_adv_to_mii_adv_t(ethtool_link_mode_mask_t ethadv)
{
u32 result = 0;

@@ -133,9 +133,9 @@ static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
* A small helper function that translates MII_ADVERTISE bits
* to ethtool advertisement settings.
*/
-static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
+static inline ethtool_link_mode_mask_t mii_adv_to_ethtool_adv_t(u32 adv)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (adv & ADVERTISE_10HALF)
result |= ADVERTISED_10baseT_Half;
@@ -161,7 +161,8 @@ static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
* settings to phy autonegotiation advertisements for the
* MII_CTRL1000 register when in 1000T mode.
*/
-static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
+static inline u32
+ethtool_adv_to_mii_ctrl1000_t(ethtool_link_mode_mask_t ethadv)
{
u32 result = 0;

@@ -181,9 +182,9 @@ static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
* bits, when in 1000Base-T mode, to ethtool
* advertisement settings.
*/
-static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
+static inline ethtool_link_mode_mask_t mii_ctrl1000_to_ethtool_adv_t(u32 adv)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (adv & ADVERTISE_1000HALF)
result |= ADVERTISED_1000baseT_Half;
@@ -201,9 +202,9 @@ static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
* bits, when in 1000Base-T mode, to ethtool
* LP advertisement settings.
*/
-static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
+static inline ethtool_link_mode_mask_t mii_lpa_to_ethtool_lpa_t(u32 lpa)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (lpa & LPA_LPACK)
result |= ADVERTISED_Autoneg;
@@ -219,9 +220,9 @@ static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
* bits, when in 1000Base-T mode, to ethtool
* advertisement settings.
*/
-static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
+static inline ethtool_link_mode_mask_t mii_stat1000_to_ethtool_lpa_t(u32 lpa)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (lpa & LPA_1000HALF)
result |= ADVERTISED_1000baseT_Half;
@@ -239,7 +240,7 @@ static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
* settings to phy autonegotiation advertisements for the
* MII_CTRL1000 register when in 1000Base-X mode.
*/
-static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
+static inline u32 ethtool_adv_to_mii_adv_x(ethtool_link_mode_mask_t ethadv)
{
u32 result = 0;

@@ -263,9 +264,9 @@ static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
* bits, when in 1000Base-X mode, to ethtool
* advertisement settings.
*/
-static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
+static inline ethtool_link_mode_mask_t mii_adv_to_ethtool_adv_x(u32 adv)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (adv & ADVERTISE_1000XHALF)
result |= ADVERTISED_1000baseT_Half;
@@ -287,9 +288,9 @@ static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
* bits, when in 1000Base-X mode, to ethtool
* LP advertisement settings.
*/
-static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
+static inline ethtool_link_mode_mask_t mii_lpa_to_ethtool_lpa_x(u32 lpa)
{
- u32 result = 0;
+ ethtool_link_mode_mask_t result = 0;

if (lpa & LPA_LPACK)
result |= ADVERTISED_Autoneg;
--
2.2.0.rc0.207.ga3a616c

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