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Date: Wed, 29 Apr 2009 19:25:57 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, linux-net-drivers@...arflare.com,
Jeff Garzik <jgarzik@...ox.com>
Subject: [PATCH 15/16] ethtool/mdio: Support backplane mode negotiation
Compile-tested only.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
This should be tested with some actual backplane-Ethernet hardware. If
no-one does that I can resubmit just the header changes for now.
Ben.
drivers/net/mdio.c | 30 +++++++++++++++++++++++++-----
include/linux/ethtool.h | 10 ++++++++++
include/linux/mdio.h | 5 +++++
3 files changed, 40 insertions(+), 5 deletions(-)
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index ee383c2..6648303 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -202,12 +202,29 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
break;
case MDIO_PMA_CTRL2_10GBCX4:
+ ecmd->port = PORT_OTHER;
+ ecmd->supported = 0;
+ ecmd->advertising = 0;
+ break;
+
case MDIO_PMA_CTRL2_10GBKX4:
case MDIO_PMA_CTRL2_10GBKR:
case MDIO_PMA_CTRL2_1000BKX:
ecmd->port = PORT_OTHER;
- ecmd->supported = 0;
- ecmd->advertising = 0;
+ ecmd->supported = SUPPORTED_Backplane;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_PMA_EXTABLE);
+ if (reg & MDIO_PMA_EXTABLE_10GBKX4)
+ ecmd->supported |= SUPPORTED_10000baseKX4_Full;
+ if (reg & MDIO_PMA_EXTABLE_10GBKR)
+ ecmd->supported |= SUPPORTED_10000baseKR_Full;
+ if (reg & MDIO_PMA_EXTABLE_1000BKX)
+ ecmd->supported |= SUPPORTED_1000baseKX_Full;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_PMA_10GBR_FECABLE);
+ if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
+ ecmd->supported |= SUPPORTED_10000baseR_FEC;
+ ecmd->advertising = ADVERTISED_Backplane;
break;
/* All the other defined modes are flavours of optical */
@@ -252,13 +269,16 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
if ((modes & ~ADVERTISED_Autoneg) == 0)
modes = ecmd->advertising;
- if (modes & ADVERTISED_10000baseT_Full) {
+ if (modes & (ADVERTISED_10000baseT_Full |
+ ADVERTISED_10000baseKX4_Full |
+ ADVERTISED_10000baseKR_Full)) {
ecmd->speed = SPEED_10000;
ecmd->duplex = DUPLEX_FULL;
} else if (modes & (ADVERTISED_1000baseT_Full |
- ADVERTISED_1000baseT_Half)) {
+ ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseKX_Full)) {
ecmd->speed = SPEED_1000;
- ecmd->duplex = !!(modes & ADVERTISED_1000baseT_Full);
+ ecmd->duplex = !(modes & ADVERTISED_1000baseT_Half);
} else if (modes & (ADVERTISED_100baseT_Full |
ADVERTISED_100baseT_Half)) {
ecmd->speed = SPEED_100;
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 14e6bc8..380b042 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -565,6 +565,11 @@ struct ethtool_ops {
#define SUPPORTED_Pause (1 << 13)
#define SUPPORTED_Asym_Pause (1 << 14)
#define SUPPORTED_2500baseX_Full (1 << 15)
+#define SUPPORTED_Backplane (1 << 16)
+#define SUPPORTED_1000baseKX_Full (1 << 17)
+#define SUPPORTED_10000baseKX4_Full (1 << 18)
+#define SUPPORTED_10000baseKR_Full (1 << 19)
+#define SUPPORTED_10000baseR_FEC (1 << 20)
/* Indicates what features are advertised by the interface. */
#define ADVERTISED_10baseT_Half (1 << 0)
@@ -583,6 +588,11 @@ struct ethtool_ops {
#define ADVERTISED_Pause (1 << 13)
#define ADVERTISED_Asym_Pause (1 << 14)
#define ADVERTISED_2500baseX_Full (1 << 15)
+#define ADVERTISED_Backplane (1 << 16)
+#define ADVERTISED_1000baseKX_Full (1 << 17)
+#define ADVERTISED_10000baseKX4_Full (1 << 18)
+#define ADVERTISED_10000baseKR_Full (1 << 19)
+#define ADVERTISED_10000baseR_FEC (1 << 20)
/* The following are all involved in forcing a particular link
* mode for the device for setting things. When getting the
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 1bff2f2..26b4eb3 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -46,6 +46,7 @@
/* Media-dependent registers. */
#define MDIO_PMA_10GBT_TXPWR 131 /* 10GBASE-T TX power control */
+#define MDIO_PMA_10GBR_FECABLE 170 /* 10GBASE-R FEC ability */
#define MDIO_PCS_10GBX_STAT1 24 /* 10GBASE-X PCS status 1 */
#define MDIO_PCS_10GBRT_STAT1 32 /* 10GBASE-R/-T PCS status 1 */
#define MDIO_PCS_10GBRT_STAT2 33 /* 10GBASE-R/-T PCS status 2 */
@@ -187,6 +188,10 @@
/* PMA 10GBASE-T TX power register. */
#define MDIO_PMA_10GBT_TXPWR_SHORT 0x0001 /* Short-reach mode */
+/* PMA 10GBASE-R FEC ability register. */
+#define MDIO_PMA_10GBR_FECABLE_ABLE 0x0001 /* FEC ability */
+#define MDIO_PMA_10GBR_FECABLE_ERRABLE 0x0002 /* FEC error indic. ability */
+
/* PCS 10GBASE-R/-T status register 1. */
#define MDIO_PCS_10GBRT_STAT1_BLKLK 0x0001 /* Block lock attained */
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
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