Add support to allow Fast Link Down (aka "Enhanced link detection") to
be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs
have this feature enabled by default.
Signed-off-by: Vincent Whitchurch <[email protected]>
---
drivers/net/phy/adin.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index 134637584a83..2e1a46e121d9 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -68,6 +68,24 @@
#define ADIN1300_EEE_CAP_REG 0x8000
#define ADIN1300_EEE_ADV_REG 0x8001
#define ADIN1300_EEE_LPABLE_REG 0x8002
+
+#define ADIN1300_FLD_EN_REG 0x8E27
+#define ADIN1300_FLD_PCS_ERR_100_EN BIT(7)
+#define ADIN1300_FLD_PCS_ERR_1000_EN BIT(6)
+#define ADIN1300_FLD_SLCR_OUT_STUCK_100_EN BIT(5)
+#define ADIN1300_FLD_SLCR_OUT_STUCK_1000_EN BIT(4)
+#define ADIN1300_FLD_SLCR_IN_ZDET_100_EN BIT(3)
+#define ADIN1300_FLD_SLCR_IN_ZDET_1000_EN BIT(2)
+#define ADIN1300_FLD_SLCR_IN_INVLD_100_EN BIT(1)
+#define ADIN1300_FLD_SLCR_IN_INVLD_1000_EN BIT(0)
+/* These bits are the ones which are enabled by default. */
+#define ADIN1300_FLD_EN_ON \
+ (ADIN1300_FLD_SLCR_OUT_STUCK_100_EN | \
+ ADIN1300_FLD_SLCR_OUT_STUCK_1000_EN | \
+ ADIN1300_FLD_SLCR_IN_ZDET_100_EN | \
+ ADIN1300_FLD_SLCR_IN_ZDET_1000_EN | \
+ ADIN1300_FLD_SLCR_IN_INVLD_1000_EN)
+
#define ADIN1300_CLOCK_STOP_REG 0x9400
#define ADIN1300_LPI_WAKE_ERR_CNT_REG 0xa000
@@ -416,6 +434,37 @@ static int adin_set_edpd(struct phy_device *phydev, u16 tx_interval)
val);
}
+static int adin_get_fast_down(struct phy_device *phydev, u8 *msecs)
+{
+ int reg;
+
+ reg = phy_read_mmd(phydev, MDIO_MMD_VEND1, ADIN1300_FLD_EN_REG);
+ if (reg < 0)
+ return reg;
+
+ if (reg & ADIN1300_FLD_EN_ON)
+ *msecs = ETHTOOL_PHY_FAST_LINK_DOWN_ON;
+ else
+ *msecs = ETHTOOL_PHY_FAST_LINK_DOWN_OFF;
+
+ return 0;
+}
+
+static int adin_set_fast_down(struct phy_device *phydev, const u8 *msecs)
+{
+ if (*msecs == ETHTOOL_PHY_FAST_LINK_DOWN_ON)
+ return phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
+ ADIN1300_FLD_EN_REG,
+ ADIN1300_FLD_EN_ON);
+
+ if (*msecs == ETHTOOL_PHY_FAST_LINK_DOWN_OFF)
+ return phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
+ ADIN1300_FLD_EN_REG,
+ ADIN1300_FLD_EN_ON);
+
+ return -EINVAL;
+}
+
static int adin_get_tunable(struct phy_device *phydev,
struct ethtool_tunable *tuna, void *data)
{
@@ -424,6 +473,8 @@ static int adin_get_tunable(struct phy_device *phydev,
return adin_get_downshift(phydev, data);
case ETHTOOL_PHY_EDPD:
return adin_get_edpd(phydev, data);
+ case ETHTOOL_PHY_FAST_LINK_DOWN:
+ return adin_get_fast_down(phydev, data);
default:
return -EOPNOTSUPP;
}
@@ -437,6 +488,8 @@ static int adin_set_tunable(struct phy_device *phydev,
return adin_set_downshift(phydev, *(const u8 *)data);
case ETHTOOL_PHY_EDPD:
return adin_set_edpd(phydev, *(const u16 *)data);
+ case ETHTOOL_PHY_FAST_LINK_DOWN:
+ return adin_set_fast_down(phydev, data);
default:
return -EOPNOTSUPP;
}
---
base-commit: e1df5202e879bce09845ac62bae30206e1edfb80
change-id: 20231127-adin-fld-c072c3b79a5a
Best regards,
--
Vincent Whitchurch <[email protected]>
On Mon, 2023-11-27 at 16:31 +0100, Vincent Whitchurch wrote:
> Add support to allow Fast Link Down (aka "Enhanced link detection") to
> be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs
> have this feature enabled by default.
>
> Signed-off-by: Vincent Whitchurch <[email protected]>
> ---
LGTM,
Acked-by: Nuno Sa <[email protected]>
Thanks!
- Nuno Sá
> drivers/net/phy/adin.c | 53
> ++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 53 insertions(+)
>
> diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
> index 134637584a83..2e1a46e121d9 100644
> --- a/drivers/net/phy/adin.c
> +++ b/drivers/net/phy/adin.c
> @@ -68,6 +68,24 @@
> #define ADIN1300_EEE_CAP_REG 0x8000
> #define ADIN1300_EEE_ADV_REG 0x8001
> #define ADIN1300_EEE_LPABLE_REG 0x8002
> +
> +#define ADIN1300_FLD_EN_REG 0x8E27
> +#define ADIN1300_FLD_PCS_ERR_100_EN BIT(7)
> +#define ADIN1300_FLD_PCS_ERR_1000_EN BIT(6)
> +#define ADIN1300_FLD_SLCR_OUT_STUCK_100_EN BIT(5)
> +#define ADIN1300_FLD_SLCR_OUT_STUCK_1000_EN BIT(4)
> +#define ADIN1300_FLD_SLCR_IN_ZDET_100_EN BIT(3)
> +#define ADIN1300_FLD_SLCR_IN_ZDET_1000_EN BIT(2)
> +#define ADIN1300_FLD_SLCR_IN_INVLD_100_EN BIT(1)
> +#define ADIN1300_FLD_SLCR_IN_INVLD_1000_EN BIT(0)
> +/* These bits are the ones which are enabled by default. */
> +#define ADIN1300_FLD_EN_ON \
> + (ADIN1300_FLD_SLCR_OUT_STUCK_100_EN | \
> + ADIN1300_FLD_SLCR_OUT_STUCK_1000_EN | \
> + ADIN1300_FLD_SLCR_IN_ZDET_100_EN | \
> + ADIN1300_FLD_SLCR_IN_ZDET_1000_EN | \
> + ADIN1300_FLD_SLCR_IN_INVLD_1000_EN)
> +
> #define ADIN1300_CLOCK_STOP_REG 0x9400
> #define ADIN1300_LPI_WAKE_ERR_CNT_REG 0xa000
>
> @@ -416,6 +434,37 @@ static int adin_set_edpd(struct phy_device *phydev, u16
> tx_interval)
> val);
> }
>
> +static int adin_get_fast_down(struct phy_device *phydev, u8 *msecs)
> +{
> + int reg;
> +
> + reg = phy_read_mmd(phydev, MDIO_MMD_VEND1, ADIN1300_FLD_EN_REG);
> + if (reg < 0)
> + return reg;
> +
> + if (reg & ADIN1300_FLD_EN_ON)
> + *msecs = ETHTOOL_PHY_FAST_LINK_DOWN_ON;
> + else
> + *msecs = ETHTOOL_PHY_FAST_LINK_DOWN_OFF;
> +
> + return 0;
> +}
> +
> +static int adin_set_fast_down(struct phy_device *phydev, const u8 *msecs)
> +{
> + if (*msecs == ETHTOOL_PHY_FAST_LINK_DOWN_ON)
> + return phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> + ADIN1300_FLD_EN_REG,
> + ADIN1300_FLD_EN_ON);
> +
> + if (*msecs == ETHTOOL_PHY_FAST_LINK_DOWN_OFF)
> + return phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
> + ADIN1300_FLD_EN_REG,
> + ADIN1300_FLD_EN_ON);
> +
> + return -EINVAL;
> +}
> +
> static int adin_get_tunable(struct phy_device *phydev,
> struct ethtool_tunable *tuna, void *data)
> {
> @@ -424,6 +473,8 @@ static int adin_get_tunable(struct phy_device *phydev,
> return adin_get_downshift(phydev, data);
> case ETHTOOL_PHY_EDPD:
> return adin_get_edpd(phydev, data);
> + case ETHTOOL_PHY_FAST_LINK_DOWN:
> + return adin_get_fast_down(phydev, data);
> default:
> return -EOPNOTSUPP;
> }
> @@ -437,6 +488,8 @@ static int adin_set_tunable(struct phy_device *phydev,
> return adin_set_downshift(phydev, *(const u8 *)data);
> case ETHTOOL_PHY_EDPD:
> return adin_set_edpd(phydev, *(const u16 *)data);
> + case ETHTOOL_PHY_FAST_LINK_DOWN:
> + return adin_set_fast_down(phydev, data);
> default:
> return -EOPNOTSUPP;
> }
>
> ---
> base-commit: e1df5202e879bce09845ac62bae30206e1edfb80
> change-id: 20231127-adin-fld-c072c3b79a5a
>
> Best regards,
On Mon, Nov 27, 2023 at 04:31:39PM +0100, Vincent Whitchurch wrote:
> Add support to allow Fast Link Down (aka "Enhanced link detection") to
> be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs
> have this feature enabled by default.
>
> Signed-off-by: Vincent Whitchurch <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Is there anything in the datasheet about how fast it is? It would be
nice to return the number of milliseconds, if its known.
Andrew
On Tue, Nov 28, 2023 at 09:18:00PM +0100, Andrew Lunn wrote:
> On Mon, Nov 27, 2023 at 04:31:39PM +0100, Vincent Whitchurch wrote:
> > Add support to allow Fast Link Down (aka "Enhanced link detection") to
> > be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs
> > have this feature enabled by default.
> >
> > Signed-off-by: Vincent Whitchurch <[email protected]>
>
> Reviewed-by: Andrew Lunn <[email protected]>
>
> Is there anything in the datasheet about how fast it is? It would be
> nice to return the number of milliseconds, if its known.
Datasheet says:
If enhanced link detection is enabled (it is enabled by default), the
ADIN1300 typically reacts to a break in the cable within 10 μs and
indicates link down via the LINK_ST pin. If enhanced link detection
is not enabled, the ADIN1300 follows the IEEE standard, and in
100BASE-TX, it can take more than either 350 ms or 750 ms in
1000BASE-T, depending if the PHY is 1000BASE-T master or 1000BASE-T
slave.
10uS is closer to 0ms and 1ms, so ETHTOOL_PHY_FAST_LINK_DOWN_ON == 0
is right.
Andrew
Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <[email protected]>:
On Mon, 27 Nov 2023 16:31:39 +0100 you wrote:
> Add support to allow Fast Link Down (aka "Enhanced link detection") to
> be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs
> have this feature enabled by default.
>
> Signed-off-by: Vincent Whitchurch <[email protected]>
> ---
> drivers/net/phy/adin.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 53 insertions(+)
>
> [...]
Here is the summary with links:
- [net-next] net: phy: adin: allow control of Fast Link Down
https://git.kernel.org/netdev/net-next/c/cb2f01b856ea
You are awesome, thank you!
--
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