* [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's
@ 2025-02-13 6:47 Heiner Kallweit
2025-02-13 6:49 ` [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers Heiner Kallweit
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Heiner Kallweit @ 2025-02-13 6:47 UTC (permalink / raw)
To: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Andrew Lunn, Russell King - ARM Linux
Cc: netdev@vger.kernel.org
The integrated PHYs on chip versions from RTL8168g allow to address
MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
registers directly, w/o the paging.
Heiner Kallweit (3):
r8169: add PHY c45 ops for MII_MMD_VENDOR2 registers
net: phy: realtek: improve MMD register access for internal PHY's
net: phy: realtek: switch from paged to MMD ops in rtl822x functions
drivers/net/ethernet/realtek/r8169_main.c | 33 +++++++++
drivers/net/phy/realtek/realtek_main.c | 90 ++++++++++-------------
2 files changed, 71 insertions(+), 52 deletions(-)
--
2.48.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers
2025-02-13 6:47 [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
@ 2025-02-13 6:49 ` Heiner Kallweit
2025-02-13 13:19 ` Andrew Lunn
2025-02-13 6:50 ` [PATCH net-next 2/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Heiner Kallweit @ 2025-02-13 6:49 UTC (permalink / raw)
To: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Andrew Lunn, Russell King - ARM Linux
Cc: netdev@vger.kernel.org
The integrated PHYs on chip versions from RTL8168g allow to address
MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
registers directly, w/o the paging.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/net/ethernet/realtek/r8169_main.c | 33 +++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 9fe53322d..e7a041bec 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -5200,6 +5200,34 @@ static int r8169_mdio_write_reg(struct mii_bus *mii_bus, int phyaddr,
return 0;
}
+static int r8169_mdio_read_reg_c45(struct mii_bus *mii_bus, int addr,
+ int devnum, int regnum)
+{
+ struct rtl8169_private *tp = mii_bus->priv;
+
+ if (addr > 0)
+ return -ENODEV;
+
+ if (devnum == MDIO_MMD_VEND2 && regnum > MDIO_STAT2 )
+ return r8168_phy_ocp_read(tp, regnum);
+
+ return 0;
+}
+
+static int r8169_mdio_write_reg_c45(struct mii_bus *mii_bus, int addr,
+ int devnum, int regnum, u16 val)
+{
+ struct rtl8169_private *tp = mii_bus->priv;
+
+ if (addr > 0)
+ return -ENODEV;
+
+ if (devnum == MDIO_MMD_VEND2 && regnum > MDIO_STAT2 )
+ r8168_phy_ocp_write(tp, regnum, val);
+
+ return 0;
+}
+
static int r8169_mdio_register(struct rtl8169_private *tp)
{
struct pci_dev *pdev = tp->pci_dev;
@@ -5230,6 +5258,11 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
new_bus->read = r8169_mdio_read_reg;
new_bus->write = r8169_mdio_write_reg;
+ if (tp->mac_version >= RTL_GIGA_MAC_VER_40) {
+ new_bus->read_c45 = r8169_mdio_read_reg_c45;
+ new_bus->write_c45 = r8169_mdio_write_reg_c45;
+ }
+
ret = devm_mdiobus_register(&pdev->dev, new_bus);
if (ret)
return ret;
--
2.48.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 2/3] net: phy: realtek: improve MMD register access for internal PHY's
2025-02-13 6:47 [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
2025-02-13 6:49 ` [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers Heiner Kallweit
@ 2025-02-13 6:50 ` Heiner Kallweit
2025-02-13 6:51 ` [PATCH net-next 3/3] net: phy: realtek: switch from paged to MMD ops in rtl822x functions Heiner Kallweit
2025-02-13 8:18 ` [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
3 siblings, 0 replies; 6+ messages in thread
From: Heiner Kallweit @ 2025-02-13 6:50 UTC (permalink / raw)
To: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Andrew Lunn, Russell King - ARM Linux
Cc: netdev@vger.kernel.org
r8169 provides the MDIO bus for the internal PHY's. It has been extended
with c45 access functions for addressing MDIO_MMD_VEND2 registers.
So we can switch from paged access to directly addressing the
MDIO_MMD_VEND2 registers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/net/phy/realtek/realtek_main.c | 79 +++++++++++---------------
1 file changed, 33 insertions(+), 46 deletions(-)
diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 210fefac4..2e2c5353c 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -735,29 +735,31 @@ static int rtlgen_read_status(struct phy_device *phydev)
return 0;
}
+static int rtlgen_read_vend2(struct phy_device *phydev, int regnum)
+{
+ return __mdiobus_c45_read(phydev->mdio.bus, 0, MDIO_MMD_VEND2, regnum);
+}
+
+static int rtlgen_write_vend2(struct phy_device *phydev, int regnum, u16 val)
+{
+ return __mdiobus_c45_write(phydev->mdio.bus, 0, MDIO_MMD_VEND2, regnum,
+ val);
+}
+
static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
int ret;
- if (devnum == MDIO_MMD_VEND2) {
- rtl821x_write_page(phydev, regnum >> 4);
- ret = __phy_read(phydev, 0x10 + ((regnum & 0xf) >> 1));
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {
- rtl821x_write_page(phydev, 0xa5c);
- ret = __phy_read(phydev, 0x12);
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
- rtl821x_write_page(phydev, 0xa5d);
- ret = __phy_read(phydev, 0x10);
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE) {
- rtl821x_write_page(phydev, 0xa5d);
- ret = __phy_read(phydev, 0x11);
- rtl821x_write_page(phydev, 0);
- } else {
+ if (devnum == MDIO_MMD_VEND2)
+ ret = rtlgen_read_vend2(phydev, regnum);
+ else if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE)
+ ret = rtlgen_read_vend2(phydev, 0xa5c4);
+ else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV)
+ ret = rtlgen_read_vend2(phydev, 0xa5d0);
+ else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE)
+ ret = rtlgen_read_vend2(phydev, 0xa5d2);
+ else
ret = -EOPNOTSUPP;
- }
return ret;
}
@@ -767,17 +769,12 @@ static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
{
int ret;
- if (devnum == MDIO_MMD_VEND2) {
- rtl821x_write_page(phydev, regnum >> 4);
- ret = __phy_write(phydev, 0x10 + ((regnum & 0xf) >> 1), val);
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
- rtl821x_write_page(phydev, 0xa5d);
- ret = __phy_write(phydev, 0x10, val);
- rtl821x_write_page(phydev, 0);
- } else {
+ if (devnum == MDIO_MMD_VEND2)
+ ret = rtlgen_write_vend2(phydev, regnum, val);
+ else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV)
+ ret = rtlgen_write_vend2(phydev, regnum, 0xa5d0);
+ else
ret = -EOPNOTSUPP;
- }
return ret;
}
@@ -789,19 +786,12 @@ static int rtl822x_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
if (ret != -EOPNOTSUPP)
return ret;
- if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2) {
- rtl821x_write_page(phydev, 0xa6e);
- ret = __phy_read(phydev, 0x16);
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
- rtl821x_write_page(phydev, 0xa6d);
- ret = __phy_read(phydev, 0x12);
- rtl821x_write_page(phydev, 0);
- } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2) {
- rtl821x_write_page(phydev, 0xa6d);
- ret = __phy_read(phydev, 0x10);
- rtl821x_write_page(phydev, 0);
- }
+ if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2)
+ ret = rtlgen_read_vend2(phydev, 0xa6ec);
+ else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2)
+ ret = rtlgen_read_vend2(phydev, 0xa6d4);
+ else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2)
+ ret = rtlgen_read_vend2(phydev, 0xa6d0);
return ret;
}
@@ -814,11 +804,8 @@ static int rtl822x_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
if (ret != -EOPNOTSUPP)
return ret;
- if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
- rtl821x_write_page(phydev, 0xa6d);
- ret = __phy_write(phydev, 0x12, val);
- rtl821x_write_page(phydev, 0);
- }
+ if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2)
+ ret = rtlgen_write_vend2(phydev, 0xa6d4, val);
return ret;
}
--
2.48.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 3/3] net: phy: realtek: switch from paged to MMD ops in rtl822x functions
2025-02-13 6:47 [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
2025-02-13 6:49 ` [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers Heiner Kallweit
2025-02-13 6:50 ` [PATCH net-next 2/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
@ 2025-02-13 6:51 ` Heiner Kallweit
2025-02-13 8:18 ` [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
3 siblings, 0 replies; 6+ messages in thread
From: Heiner Kallweit @ 2025-02-13 6:51 UTC (permalink / raw)
To: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Andrew Lunn, Russell King - ARM Linux
Cc: netdev@vger.kernel.org
The MDIO bus provided by r8169 for the internal PHY's now supports
c45 ops for the MDIO_MMD_VEND2 device. So we can switch to standard
MMD ops here.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/net/phy/realtek/realtek_main.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 2e2c5353c..34be1d752 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -901,7 +901,7 @@ static int rtl822x_get_features(struct phy_device *phydev)
{
int val;
- val = phy_read_paged(phydev, 0xa61, 0x13);
+ val = phy_read_mmd(phydev, MDIO_MMD_VEND2, 0xa616);
if (val < 0)
return val;
@@ -922,10 +922,9 @@ static int rtl822x_config_aneg(struct phy_device *phydev)
if (phydev->autoneg == AUTONEG_ENABLE) {
u16 adv = linkmode_adv_to_mii_10gbt_adv_t(phydev->advertising);
- ret = phy_modify_paged_changed(phydev, 0xa5d, 0x12,
- MDIO_AN_10GBT_CTRL_ADV2_5G |
- MDIO_AN_10GBT_CTRL_ADV5G,
- adv);
+ ret = phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2, 0xa5d4,
+ MDIO_AN_10GBT_CTRL_ADV2_5G |
+ MDIO_AN_10GBT_CTRL_ADV5G, adv);
if (ret < 0)
return ret;
}
@@ -969,7 +968,7 @@ static int rtl822x_read_status(struct phy_device *phydev)
!phydev->autoneg_complete)
return 0;
- lpadv = phy_read_paged(phydev, 0xa5d, 0x13);
+ lpadv = phy_read_mmd(phydev, MDIO_MMD_VEND2, 0xa5d6);
if (lpadv < 0)
return lpadv;
--
2.48.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's
2025-02-13 6:47 [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
` (2 preceding siblings ...)
2025-02-13 6:51 ` [PATCH net-next 3/3] net: phy: realtek: switch from paged to MMD ops in rtl822x functions Heiner Kallweit
@ 2025-02-13 8:18 ` Heiner Kallweit
3 siblings, 0 replies; 6+ messages in thread
From: Heiner Kallweit @ 2025-02-13 8:18 UTC (permalink / raw)
To: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Andrew Lunn, Russell King - ARM Linux
Cc: netdev@vger.kernel.org
On 13.02.2025 07:47, Heiner Kallweit wrote:
> The integrated PHYs on chip versions from RTL8168g allow to address
> MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
> MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
> address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
> registers directly, w/o the paging.
>
> Heiner Kallweit (3):
> r8169: add PHY c45 ops for MII_MMD_VENDOR2 registers
> net: phy: realtek: improve MMD register access for internal PHY's
> net: phy: realtek: switch from paged to MMD ops in rtl822x functions
>
> drivers/net/ethernet/realtek/r8169_main.c | 33 +++++++++
> drivers/net/phy/realtek/realtek_main.c | 90 ++++++++++-------------
> 2 files changed, 71 insertions(+), 52 deletions(-)
>
There's a superfluous space in patch 1.
--
pw-bot: cr
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers
2025-02-13 6:49 ` [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers Heiner Kallweit
@ 2025-02-13 13:19 ` Andrew Lunn
0 siblings, 0 replies; 6+ messages in thread
From: Andrew Lunn @ 2025-02-13 13:19 UTC (permalink / raw)
To: Heiner Kallweit
Cc: Realtek linux nic maintainers, Andrew Lunn, Paolo Abeni,
Jakub Kicinski, David Miller, Eric Dumazet, Simon Horman,
Russell King - ARM Linux, netdev@vger.kernel.org
> +static int r8169_mdio_write_reg_c45(struct mii_bus *mii_bus, int addr,
> + int devnum, int regnum, u16 val)
> +{
> + struct rtl8169_private *tp = mii_bus->priv;
> +
> + if (addr > 0)
> + return -ENODEV;
> +
> + if (devnum == MDIO_MMD_VEND2 && regnum > MDIO_STAT2 )
> + r8168_phy_ocp_write(tp, regnum, val);
> +
> + return 0;
We don't expect writes to random registers. So returning EIO or ENODEV
for MMD other than VEND2 might help find bugs. Also, it seems like a
write to regnum <= MDIO_STAT2 would be a bug, since those registers
don't exist?
Andrew
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-02-13 13:19 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2025-02-13 6:47 [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
2025-02-13 6:49 ` [PATCH net-next 1/3] r8169: add PHY c45 ops for MDIO_MMD_VEND2 registers Heiner Kallweit
2025-02-13 13:19 ` Andrew Lunn
2025-02-13 6:50 ` [PATCH net-next 2/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
2025-02-13 6:51 ` [PATCH net-next 3/3] net: phy: realtek: switch from paged to MMD ops in rtl822x functions Heiner Kallweit
2025-02-13 8:18 ` [PATCH net-next 0/3] net: phy: realtek: improve MMD register access for internal PHY's Heiner Kallweit
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