mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2024-12-20 22:01:38 +00:00
97 lines
3.8 KiB
Diff
97 lines
3.8 KiB
Diff
|
From 05ad5d4581c3c1cc724fe50d4652833fb9f3037b Mon Sep 17 00:00:00 2001
|
||
|
|
From: Sean Anderson <sean.anderson@seco.com>
|
||
|
|
Date: Fri, 2 Sep 2022 18:02:39 -0400
|
||
|
|
Subject: [PATCH] net: phy: Add 1000BASE-KX interface mode
|
||
|
|
|
||
|
|
Add 1000BASE-KX interface mode. This 1G backplane ethernet as described in
|
||
|
|
clause 70. Clause 73 autonegotiation is mandatory, and only full duplex
|
||
|
|
operation is supported.
|
||
|
|
|
||
|
|
Although at the PMA level this interface mode is identical to
|
||
|
|
1000BASE-X, it uses a different form of in-band autonegation. This
|
||
|
|
justifies a separate interface mode, since the interface mode (along
|
||
|
|
with the MLO_AN_* autonegotiation mode) sets the type of autonegotiation
|
||
|
|
which will be used on a link. This results in more than just electrical
|
||
|
|
differences between the link modes.
|
||
|
|
|
||
|
|
With regard to 1000BASE-X, 1000BASE-KX holds a similar position to
|
||
|
|
SGMII: same signaling, but different autonegotiation. PCS drivers
|
||
|
|
(which typically handle in-band autonegotiation) may only support
|
||
|
|
1000BASE-X, and not 1000BASE-KX. Similarly, the phy mode is used to
|
||
|
|
configure serdes phys with phy_set_mode_ext. Due to the different
|
||
|
|
electrical standards (SFI or XFI vs Clause 70), they will likely want to
|
||
|
|
use different configuration. Adding a phy interface mode for
|
||
|
|
1000BASE-KX helps simplify configuration in these areas.
|
||
|
|
|
||
|
|
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
|
||
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
|
---
|
||
|
|
Documentation/networking/phy.rst | 6 ++++++
|
||
|
|
drivers/net/phy/phy-core.c | 1 +
|
||
|
|
drivers/net/phy/phylink.c | 1 +
|
||
|
|
include/linux/phy.h | 4 ++++
|
||
|
|
4 files changed, 12 insertions(+)
|
||
|
|
|
||
|
|
--- a/Documentation/networking/phy.rst
|
||
|
|
+++ b/Documentation/networking/phy.rst
|
||
|
|
@@ -312,6 +312,12 @@ Some of the interface modes are describe
|
||
|
|
PTP-enabled PHYs. This mode isn't compatible with QSGMII, but offers the
|
||
|
|
same capabilities in terms of link speed and negociation.
|
||
|
|
|
||
|
|
+``PHY_INTERFACE_MODE_1000BASEKX``
|
||
|
|
+ This is 1000BASE-X as defined by IEEE 802.3 Clause 36 with Clause 73
|
||
|
|
+ autonegotiation. Generally, it will be used with a Clause 70 PMD. To
|
||
|
|
+ contrast with the 1000BASE-X phy mode used for Clause 38 and 39 PMDs, this
|
||
|
|
+ interface mode has different autonegotiation and only supports full duplex.
|
||
|
|
+
|
||
|
|
Pause frames / flow control
|
||
|
|
===========================
|
||
|
|
|
||
|
|
--- a/drivers/net/phy/phy-core.c
|
||
|
|
+++ b/drivers/net/phy/phy-core.c
|
||
|
|
@@ -114,6 +114,7 @@ int phy_interface_num_ports(phy_interfac
|
||
|
|
case PHY_INTERFACE_MODE_100BASEX:
|
||
|
|
case PHY_INTERFACE_MODE_RXAUI:
|
||
|
|
case PHY_INTERFACE_MODE_XAUI:
|
||
|
|
+ case PHY_INTERFACE_MODE_1000BASEKX:
|
||
|
|
return 1;
|
||
|
|
case PHY_INTERFACE_MODE_QSGMII:
|
||
|
|
case PHY_INTERFACE_MODE_QUSGMII:
|
||
|
|
--- a/drivers/net/phy/phylink.c
|
||
|
|
+++ b/drivers/net/phy/phylink.c
|
||
|
|
@@ -390,6 +390,7 @@ void phylink_get_linkmodes(unsigned long
|
||
|
|
case PHY_INTERFACE_MODE_1000BASEX:
|
||
|
|
caps |= MAC_1000HD;
|
||
|
|
fallthrough;
|
||
|
|
+ case PHY_INTERFACE_MODE_1000BASEKX:
|
||
|
|
case PHY_INTERFACE_MODE_TRGMII:
|
||
|
|
caps |= MAC_1000FD;
|
||
|
|
break;
|
||
|
|
--- a/include/linux/phy.h
|
||
|
|
+++ b/include/linux/phy.h
|
||
|
|
@@ -116,6 +116,7 @@ extern const int phy_10gbit_features_arr
|
||
|
|
* @PHY_INTERFACE_MODE_USXGMII: Universal Serial 10GE MII
|
||
|
|
* @PHY_INTERFACE_MODE_10GKR: 10GBASE-KR - with Clause 73 AN
|
||
|
|
* @PHY_INTERFACE_MODE_QUSGMII: Quad Universal SGMII
|
||
|
|
+ * @PHY_INTERFACE_MODE_1000BASEKX: 1000Base-KX - with Clause 73 AN
|
||
|
|
* @PHY_INTERFACE_MODE_MAX: Book keeping
|
||
|
|
*
|
||
|
|
* Describes the interface between the MAC and PHY.
|
||
|
|
@@ -154,6 +155,7 @@ typedef enum {
|
||
|
|
/* 10GBASE-KR - with Clause 73 AN */
|
||
|
|
PHY_INTERFACE_MODE_10GKR,
|
||
|
|
PHY_INTERFACE_MODE_QUSGMII,
|
||
|
|
+ PHY_INTERFACE_MODE_1000BASEKX,
|
||
|
|
PHY_INTERFACE_MODE_MAX,
|
||
|
|
} phy_interface_t;
|
||
|
|
|
||
|
|
@@ -251,6 +253,8 @@ static inline const char *phy_modes(phy_
|
||
|
|
return "trgmii";
|
||
|
|
case PHY_INTERFACE_MODE_1000BASEX:
|
||
|
|
return "1000base-x";
|
||
|
|
+ case PHY_INTERFACE_MODE_1000BASEKX:
|
||
|
|
+ return "1000base-kx";
|
||
|
|
case PHY_INTERFACE_MODE_2500BASEX:
|
||
|
|
return "2500base-x";
|
||
|
|
case PHY_INTERFACE_MODE_5GBASER:
|