From: James Chapman <jchapman@katalix.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Netdev <netdev@oss.sgi.com>
Subject: PATCH: add GigE PHY support to MII library
Date: Tue, 22 Feb 2005 14:49:16 +0000 [thread overview]
Message-ID: <421B466C.4010902@katalix.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 548 bytes --]
The attached patch adds support for GigE MII PHYs in the MII support
library. This allows GigE drivers to use the MII library the same way
10/100 drivers do.
Since the MII library is already used by lots of network drivers and the
GigE MII register bit definitions were "reserved" when many 10/100 PHYs
were designed, the new GigE registers are accessed only if a driver
specifically enables it. Existing 10/100 drivers should see no behavior
differences with this change.
--
James Chapman
PGP key : http://www.katalix.com/~jchapman/pgpkey.txt
[-- Attachment #2: mii.patch --]
[-- Type: text/plain, Size: 8341 bytes --]
--- linux-2.5-mv643xx-enet.orig/drivers/net/mii.c 2003-01-03 19:37:55.000000000 +0000
+++ linux-2.5-mv643xx-enet.new/drivers/net/mii.c 2005-02-22 12:31:16.000000000 +0000
@@ -37,6 +37,7 @@
{
struct net_device *dev = mii->dev;
u32 advert, bmcr, lpa, nego;
+ u32 advert2 = 0, bmcr2 = 0, lpa2 = 0;
ecmd->supported =
(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
@@ -54,6 +55,9 @@
ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
+ if (mii->supports_gmii)
+ advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
+
if (advert & ADVERTISE_10HALF)
ecmd->advertising |= ADVERTISED_10baseT_Half;
if (advert & ADVERTISE_10FULL)
@@ -62,19 +66,29 @@
ecmd->advertising |= ADVERTISED_100baseT_Half;
if (advert & ADVERTISE_100FULL)
ecmd->advertising |= ADVERTISED_100baseT_Full;
+ if (advert2 & ADVERTISE_1000HALF)
+ ecmd->advertising |= ADVERTISED_1000baseT_Half;
+ if (advert2 & ADVERTISE_1000FULL)
+ ecmd->advertising |= ADVERTISED_1000baseT_Full;
bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
lpa = mii->mdio_read(dev, mii->phy_id, MII_LPA);
+ if (mii->supports_gmii) {
+ bmcr2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
+ lpa2 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
+ }
if (bmcr & BMCR_ANENABLE) {
ecmd->advertising |= ADVERTISED_Autoneg;
ecmd->autoneg = AUTONEG_ENABLE;
nego = mii_nway_result(advert & lpa);
- if (nego == LPA_100FULL || nego == LPA_100HALF)
+ if ((bmcr2 & (ADVERTISE_1000HALF | ADVERTISE_1000FULL)) & (lpa2 >> 2))
+ ecmd->speed = SPEED_1000;
+ else if (nego == LPA_100FULL || nego == LPA_100HALF)
ecmd->speed = SPEED_100;
else
ecmd->speed = SPEED_10;
- if (nego == LPA_100FULL || nego == LPA_10FULL) {
+ if ((lpa2 & LPA_1000FULL) || nego == LPA_100FULL || nego == LPA_10FULL) {
ecmd->duplex = DUPLEX_FULL;
mii->full_duplex = 1;
} else {
@@ -84,7 +98,8 @@
} else {
ecmd->autoneg = AUTONEG_DISABLE;
- ecmd->speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
+ ecmd->speed = ((bmcr2 & BMCR_SPEED1000 && (bmcr & BMCR_SPEED100) == 0) ? SPEED_1000 :
+ (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10);
ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
}
@@ -97,7 +112,7 @@
{
struct net_device *dev = mii->dev;
- if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
+ if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100 && ecmd->speed != SPEED_1000)
return -EINVAL;
if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
return -EINVAL;
@@ -109,21 +124,30 @@
return -EINVAL;
if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
return -EINVAL;
+ if ((ecmd->speed == SPEED_1000) && (!mii->supports_gmii))
+ return -EINVAL;
/* ignore supported, maxtxpkt, maxrxpkt */
if (ecmd->autoneg == AUTONEG_ENABLE) {
u32 bmcr, advert, tmp;
+ u32 advert2 = 0, tmp2 = 0;
if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full)) == 0)
+ ADVERTISED_100baseT_Full |
+ ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseT_Full)) == 0)
return -EINVAL;
/* advertise only what has been requested */
advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
+ if (mii->supports_gmii) {
+ advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
+ tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
+ }
if (ecmd->advertising & ADVERTISED_10baseT_Half)
tmp |= ADVERTISE_10HALF;
if (ecmd->advertising & ADVERTISED_10baseT_Full)
@@ -132,10 +156,18 @@
tmp |= ADVERTISE_100HALF;
if (ecmd->advertising & ADVERTISED_100baseT_Full)
tmp |= ADVERTISE_100FULL;
+ if (mii->supports_gmii) {
+ if (ecmd->advertising & ADVERTISED_1000baseT_Half)
+ advert2 |= ADVERTISE_1000HALF;
+ if (ecmd->advertising & ADVERTISED_1000baseT_Full)
+ advert2 |= ADVERTISE_1000FULL;
+ }
if (advert != tmp) {
mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
mii->advertising = tmp;
}
+ if ((mii->supports_gmii) && (advert2 != tmp2))
+ mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
/* turn on autonegotiation, and force a renegotiate */
bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
@@ -148,8 +180,10 @@
/* turn off auto negotiation, set speed and duplexity */
bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
- tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
- if (ecmd->speed == SPEED_100)
+ tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_FULLDPLX);
+ if (ecmd->speed == SPEED_1000)
+ tmp |= BMCR_SPEED1000;
+ else if (ecmd->speed == SPEED_100)
tmp |= BMCR_SPEED100;
if (ecmd->duplex == DUPLEX_FULL) {
tmp |= BMCR_FULLDPLX;
@@ -207,6 +241,7 @@
{
unsigned int old_carrier, new_carrier;
int advertise, lpa, media, duplex;
+ int lpa2 = 0;
/* if forced media, go no further */
if (mii->force_media)
@@ -243,17 +278,21 @@
mii->advertising = advertise;
}
lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
+ if (mii->supports_gmii)
+ lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
/* figure out media and duplex from advertise and LPA values */
media = mii_nway_result(lpa & advertise);
duplex = (media & ADVERTISE_FULL) ? 1 : 0;
+ if (lpa2 & LPA_1000FULL)
+ duplex = 1;
if (ok_to_print)
printk(KERN_INFO "%s: link up, %sMbps, %s-duplex, lpa 0x%04X\n",
mii->dev->name,
- media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ?
- "100" : "10",
+ lpa2 & (LPA_1000FULL | LPA_1000HALF) ? "1000" :
+ media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? "100" : "10",
duplex ? "full" : "half",
lpa);
--- linux-2.5-mv643xx-enet.orig/include/linux/mii.h 2004-08-22 21:57:31.000000000 +0100
+++ linux-2.5-mv643xx-enet.new/include/linux/mii.h 2005-02-22 12:18:11.000000000 +0000
@@ -20,6 +20,8 @@
#define MII_ADVERTISE 0x04 /* Advertisement control reg */
#define MII_LPA 0x05 /* Link partner ability reg */
#define MII_EXPANSION 0x06 /* Expansion register */
+#define MII_CTRL1000 0x09 /* 1000BASE-T control */
+#define MII_STAT1000 0x0a /* 1000BASE-T status */
#define MII_DCOUNTER 0x12 /* Disconnect counter */
#define MII_FCSCOUNTER 0x13 /* False carrier counter */
#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
@@ -84,7 +86,8 @@
#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
-#define LPA_RESV 0x1c00 /* Unused... */
+#define LPA_PAUSE 0x0400
+#define LPA_RESV 0x1800 /* Unused... */
#define LPA_RFAULT 0x2000 /* Link partner faulted */
#define LPA_LPACK 0x4000 /* Link partner acked us */
#define LPA_NPAGE 0x8000 /* Next page bit */
@@ -105,6 +108,15 @@
#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
#define NWAYTEST_RESV2 0xfe00 /* Unused... */
+/* 1000BASE-T Control register */
+#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */
+#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */
+
+/* 1000BASE-T Status register */
+#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */
+#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */
+#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */
+#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */
struct mii_if_info {
int phy_id;
@@ -114,6 +126,7 @@
unsigned int full_duplex : 1; /* is full duplex? */
unsigned int force_media : 1; /* is autoneg. disabled? */
+ unsigned int supports_gmii : 1; /* are GMII registers supported? */
struct net_device *dev;
int (*mdio_read) (struct net_device *dev, int phy_id, int location);
next reply other threads:[~2005-02-22 14:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-22 14:49 James Chapman [this message]
2005-02-25 21:20 ` [PATCH: 2.6.11-rc5 netdev-2.6] mii: add GigE support James Chapman
2005-03-03 5:57 ` Jeff Garzik
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