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authorRussell King <rmk+kernel@armlinux.org.uk>2022-09-30 16:21:00 +0200
committerDavid S. Miller <davem@davemloft.net>2022-10-03 11:08:32 +0100
commitfd580c9830316edad6f8b1d9f542563730658efe (patch)
tree5b7e49982d99d41554af950fffddb738ec141f7c /drivers/net/phy/sfp-bus.c
parent1645f44dd5b846a473d7789fe622c278eb880d48 (diff)
net: sfp: augment SFP parsing with phy_interface_t bitmap
We currently parse the SFP EEPROM to a bitmap of ethtool link modes, and then attempt to convert the link modes to a PHY interface mode. While this works at present, there are cases where this is sub-optimal. For example, where a module can operate with several different PHY interface modes. To start addressing this, arrange for the SFP EEPROM parsing to also provide a bitmap of the possible PHY interface modes. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Marek BehĂșn <kabel@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/sfp-bus.c')
-rw-r--r--drivers/net/phy/sfp-bus.c75
1 files changed, 57 insertions, 18 deletions
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index 0a9099c77694..29e3fa86bac3 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -139,12 +139,14 @@ EXPORT_SYMBOL_GPL(sfp_may_have_phy);
* @bus: a pointer to the &struct sfp_bus structure for the sfp module
* @id: a pointer to the module's &struct sfp_eeprom_id
* @support: pointer to an array of unsigned long for the ethtool support mask
+ * @interfaces: pointer to an array of unsigned long for phy interface modes
+ * mask
*
* Parse the EEPROM identification information and derive the supported
* ethtool link modes for the module.
*/
void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
- unsigned long *support)
+ unsigned long *support, unsigned long *interfaces)
{
unsigned int br_min, br_nom, br_max;
__ETHTOOL_DECLARE_LINK_MODE_MASK(modes) = { 0, };
@@ -171,54 +173,81 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
}
/* Set ethtool support from the compliance fields. */
- if (id->base.e10g_base_sr)
+ if (id->base.e10g_base_sr) {
phylink_set(modes, 10000baseSR_Full);
- if (id->base.e10g_base_lr)
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
+ if (id->base.e10g_base_lr) {
phylink_set(modes, 10000baseLR_Full);
- if (id->base.e10g_base_lrm)
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
+ if (id->base.e10g_base_lrm) {
phylink_set(modes, 10000baseLRM_Full);
- if (id->base.e10g_base_er)
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
+ if (id->base.e10g_base_er) {
phylink_set(modes, 10000baseER_Full);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
if (id->base.e1000_base_sx ||
id->base.e1000_base_lx ||
- id->base.e1000_base_cx)
+ id->base.e1000_base_cx) {
phylink_set(modes, 1000baseX_Full);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ }
if (id->base.e1000_base_t) {
phylink_set(modes, 1000baseT_Half);
phylink_set(modes, 1000baseT_Full);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ __set_bit(PHY_INTERFACE_MODE_SGMII, interfaces);
}
/* 1000Base-PX or 1000Base-BX10 */
if ((id->base.e_base_px || id->base.e_base_bx10) &&
- br_min <= 1300 && br_max >= 1200)
+ br_min <= 1300 && br_max >= 1200) {
phylink_set(modes, 1000baseX_Full);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ }
/* 100Base-FX, 100Base-LX, 100Base-PX, 100Base-BX10 */
- if (id->base.e100_base_fx || id->base.e100_base_lx)
+ if (id->base.e100_base_fx || id->base.e100_base_lx) {
phylink_set(modes, 100baseFX_Full);
- if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100)
+ __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
+ }
+ if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100) {
phylink_set(modes, 100baseFX_Full);
+ __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
+ }
/* For active or passive cables, select the link modes
* based on the bit rates and the cable compliance bytes.
*/
if ((id->base.sfp_ct_passive || id->base.sfp_ct_active) && br_nom) {
/* This may look odd, but some manufacturers use 12000MBd */
- if (br_min <= 12000 && br_max >= 10300)
+ if (br_min <= 12000 && br_max >= 10300) {
phylink_set(modes, 10000baseCR_Full);
- if (br_min <= 3200 && br_max >= 3100)
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
+ if (br_min <= 3200 && br_max >= 3100) {
phylink_set(modes, 2500baseX_Full);
- if (br_min <= 1300 && br_max >= 1200)
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
+ }
+ if (br_min <= 1300 && br_max >= 1200) {
phylink_set(modes, 1000baseX_Full);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ }
}
if (id->base.sfp_ct_passive) {
- if (id->base.passive.sff8431_app_e)
+ if (id->base.passive.sff8431_app_e) {
phylink_set(modes, 10000baseCR_Full);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
+ }
}
if (id->base.sfp_ct_active) {
if (id->base.active.sff8431_app_e ||
id->base.active.sff8431_lim) {
phylink_set(modes, 10000baseCR_Full);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
}
}
@@ -243,12 +272,14 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
case SFF8024_ECC_10GBASE_T_SFI:
case SFF8024_ECC_10GBASE_T_SR:
phylink_set(modes, 10000baseT_Full);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
break;
case SFF8024_ECC_5GBASE_T:
phylink_set(modes, 5000baseT_Full);
break;
case SFF8024_ECC_2_5GBASE_T:
phylink_set(modes, 2500baseT_Full);
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
break;
default:
dev_warn(bus->sfp_dev,
@@ -261,10 +292,14 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
if (id->base.fc_speed_100 ||
id->base.fc_speed_200 ||
id->base.fc_speed_400) {
- if (id->base.br_nominal >= 31)
+ if (id->base.br_nominal >= 31) {
phylink_set(modes, 2500baseX_Full);
- if (id->base.br_nominal >= 12)
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
+ }
+ if (id->base.br_nominal >= 12) {
phylink_set(modes, 1000baseX_Full);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ }
}
/* If we haven't discovered any modes that this module supports, try
@@ -277,14 +312,18 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
* 2500BASE-X, so we allow some slack here.
*/
if (bitmap_empty(modes, __ETHTOOL_LINK_MODE_MASK_NBITS) && br_nom) {
- if (br_min <= 1300 && br_max >= 1200)
+ if (br_min <= 1300 && br_max >= 1200) {
phylink_set(modes, 1000baseX_Full);
- if (br_min <= 3200 && br_max >= 2500)
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
+ }
+ if (br_min <= 3200 && br_max >= 2500) {
phylink_set(modes, 2500baseX_Full);
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
+ }
}
if (bus->sfp_quirk && bus->sfp_quirk->modes)
- bus->sfp_quirk->modes(id, modes);
+ bus->sfp_quirk->modes(id, modes, interfaces);
linkmode_or(support, support, modes);