diff options
| author | Ayaz Abdulla <aabdulla@nvidia.com> | 2008-02-04 15:13:59 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-02-06 06:41:14 -0500 |
| commit | b2976d23a15aac11e8e77a496108b9f4040fac4d (patch) | |
| tree | f5ac3f3007795411969047233591f0b364db65cd /drivers/net | |
| parent | 47eaa267a5db1729d238f977364e297b8963e115 (diff) | |
| download | talos-obmc-linux-b2976d23a15aac11e8e77a496108b9f4040fac4d.tar.gz talos-obmc-linux-b2976d23a15aac11e8e77a496108b9f4040fac4d.zip | |
forcedeth: restart tx/rx
This patch fixes the issue where the transmitter and receiver must be
restarted when applying new changes to certain registers.
Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/forcedeth.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index 36342230a6de..6e47b1103cd2 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -624,6 +624,9 @@ union ring_type { #define NV_MSI_X_VECTOR_TX 0x1 #define NV_MSI_X_VECTOR_OTHER 0x2 +#define NV_RESTART_TX 0x1 +#define NV_RESTART_RX 0x2 + /* statistics */ struct nv_ethtool_str { char name[ETH_GSTRING_LEN]; @@ -2767,6 +2770,7 @@ static int nv_update_linkspeed(struct net_device *dev) int mii_status; int retval = 0; u32 control_1000, status_1000, phyreg, pause_flags, txreg; + u32 txrxFlags = 0; /* BMSR_LSTATUS is latched, read it twice: * we want the current value. @@ -2862,6 +2866,16 @@ set_speed: np->duplex = newdup; np->linkspeed = newls; + /* The transmitter and receiver must be restarted for safe update */ + if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) { + txrxFlags |= NV_RESTART_TX; + nv_stop_tx(dev); + } + if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) { + txrxFlags |= NV_RESTART_RX; + nv_stop_rx(dev); + } + if (np->gigabit == PHY_GIGABIT) { phyreg = readl(base + NvRegRandomSeed); phyreg &= ~(0x3FF00); @@ -2950,6 +2964,11 @@ set_speed: } nv_update_pause(dev, pause_flags); + if (txrxFlags & NV_RESTART_TX) + nv_start_tx(dev); + if (txrxFlags & NV_RESTART_RX) + nv_start_rx(dev); + return retval; } |
