From 8c2f5fa51e1b22db53acf4f3918b6f590b4a35a1 Mon Sep 17 00:00:00 2001 From: Brice Goglin Date: Mon, 10 Nov 2008 13:58:41 +0100 Subject: myri10ge: fix stop/go ordering even more The doorbell writes may be seen out of order by the firmware if they are in WC memory since the tx spin(un)lock does not flush WC writes. Hence if the "stop" is written on a different CPU than the "go", it is possible that the stop will arrive after the go unless we add an explicit memory barrier (and mmiowb() is not enough). It fixes transmit hangs in multi tx queue mode. Signed-off-by: Brice Goglin Signed-off-by: Jeff Garzik --- drivers/net/myri10ge/myri10ge.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index a5f428bcc0e..b3786709730 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -75,7 +75,7 @@ #include "myri10ge_mcp.h" #include "myri10ge_mcp_gen_header.h" -#define MYRI10GE_VERSION_STR "1.4.3-1.375" +#define MYRI10GE_VERSION_STR "1.4.3-1.378" MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); MODULE_AUTHOR("Maintainer: help@myri.com"); @@ -1393,6 +1393,7 @@ myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index) if (tx->req == tx->done) { tx->queue_active = 0; put_be32(htonl(1), tx->send_stop); + mb(); mmiowb(); } __netif_tx_unlock(dev_queue); @@ -2865,6 +2866,7 @@ again: if ((mgp->dev->real_num_tx_queues > 1) && tx->queue_active == 0) { tx->queue_active = 1; put_be32(htonl(1), tx->send_go); + mb(); mmiowb(); } tx->pkt_start++; -- cgit v1.2.3-70-g09d2 From 9f64306b8a3949b74cb11d3b2f613e8a2af20fa6 Mon Sep 17 00:00:00 2001 From: Divy Le Ray Date: Sun, 9 Nov 2008 00:55:28 -0800 Subject: cxgb3 - eeprom read fixes Protect against invalid phy entries in the eeprom. Extend eeprom access timeout. Signed-off-by: Divy Le Ray Signed-off-by: Jeff Garzik --- drivers/net/cxgb3/t3_hw.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c index 968f64be374..9a0898b0dbc 100644 --- a/drivers/net/cxgb3/t3_hw.c +++ b/drivers/net/cxgb3/t3_hw.c @@ -572,7 +572,7 @@ struct t3_vpd { u32 pad; /* for multiple-of-4 sizing and alignment */ }; -#define EEPROM_MAX_POLL 4 +#define EEPROM_MAX_POLL 40 #define EEPROM_STAT_ADDR 0x4000 #define VPD_BASE 0xc00 @@ -3690,6 +3690,12 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai, ; pti = &port_types[adapter->params.vpd.port_type[j]]; + if (!pti->phy_prep) { + CH_ALERT(adapter, "Invalid port type index %d\n", + adapter->params.vpd.port_type[j]); + return -EINVAL; + } + ret = pti->phy_prep(&p->phy, adapter, ai->phy_base_addr + j, ai->mdio_ops); if (ret) -- cgit v1.2.3-70-g09d2 From f9ee3882969224aa9f086268020c31819be6ae99 Mon Sep 17 00:00:00 2001 From: Divy Le Ray Date: Sun, 9 Nov 2008 00:55:33 -0800 Subject: cxgb3 - Limit multiqueue setting to msi-x Allow multiqueue setting in MSI-X mode only Signed-off-by: Divy Le Ray Signed-off-by: Jeff Garzik --- drivers/net/cxgb3/cxgb3_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index 1ace41a13ac..f66367ed693 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -2699,7 +2699,7 @@ static void set_nqsets(struct adapter *adap) int hwports = adap->params.nports; int nqsets = SGE_QSETS; - if (adap->params.rev > 0) { + if (adap->params.rev > 0 && adap->flags & USING_MSIX) { if (hwports == 2 && (hwports * nqsets > SGE_QSETS || num_cpus >= nqsets / hwports)) -- cgit v1.2.3-70-g09d2 From cf3760dad576c8dfb4fef4b8a8a08a027bf02583 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 6 Nov 2008 17:06:42 -0600 Subject: RDMA/cxgb3: deadlock in iw_cxgb3 can cause hang when configuring interface. When the iw_cxgb3 module's cxgb3_client "add" func gets called by the cxgb3 module, the iwarp driver ends up calling the ethtool ops get_drvinfo function in cxgb3 to get the fw version and other info. Currently the iwarp driver grabs the rtnl lock around this down call to serialize. As of 2.6.27 or so, things changed such that the rtnl lock is held around the call to the netdev driver open function. Also the cxgb3_client "add" function doesn't get called if the device is down. So, if you load cxgb3, then load iw_cxgb3, then ifconfig up the device, the iw_cxgb3 add func gets called with the rtnl_lock held. If you load cxgb3, ifconfig up the device, then load iw_cxgb3, the add func gets called without the rtnl_lock held. The former causes the deadlock, the latter does not. In addition, there are iw_cxgb3 sysfs handlers that also can call down into cxgb3 to gather the fw and hw versions. These can be called concurrently on different processors and at any time. Thus we need to push this serialization down in the cxgb3 driver get_drvinfo func. The fix is to remove rtnl lock usage, and use a per-device lock in cxgb3. Signed-off-by: Steve Wise Signed-off-by: Jeff Garzik --- drivers/infiniband/hw/cxgb3/iwch_provider.c | 6 ------ drivers/net/cxgb3/cxgb3_main.c | 2 ++ 2 files changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index ecff9804358..160ef482712 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -1102,9 +1102,7 @@ static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev) char *cp, *next; unsigned fw_maj, fw_min, fw_mic; - rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); - rtnl_unlock(); next = info.fw_version + 1; cp = strsep(&next, "."); @@ -1192,9 +1190,7 @@ static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, ch struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); - rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); - rtnl_unlock(); return sprintf(buf, "%s\n", info.fw_version); } @@ -1207,9 +1203,7 @@ static ssize_t show_hca(struct device *dev, struct device_attribute *attr, struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); - rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); - rtnl_unlock(); return sprintf(buf, "%s\n", info.driver); } diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index f66367ed693..2c341f83d32 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -1307,8 +1307,10 @@ static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) u32 fw_vers = 0; u32 tp_vers = 0; + spin_lock(&adapter->stats_lock); t3_get_fw_version(adapter, &fw_vers); t3_get_tp_version(adapter, &tp_vers); + spin_unlock(&adapter->stats_lock); strcpy(info->driver, DRV_NAME); strcpy(info->version, DRV_VERSION); -- cgit v1.2.3-70-g09d2 From 347c8d83cd9f546a8357e1ab12fa6867707975d8 Mon Sep 17 00:00:00 2001 From: "Dasgupta, Romit" Date: Thu, 6 Nov 2008 15:46:18 +0530 Subject: [netdrvr] smc911x: fix for driver resume (and compilation warning) I am trying out suspend, resume on an OMAP3 based board. What I see during resume is that the SMC911x driver resume routing gets stuck after trying to transmit the packet out of the controller. Some debug messages below: --> smc911x_drv_resume eth0: --> smc911x_reset eth0: smc911x_reset timeout waiting for PM restore eth0: --> smc911x_enable eth0: --> smc911x_phy_configure() eth0: --> smc911x_phy_reset() eth0: phy caps=0x782d eth0: phy advertised caps=0x0de1 eth0: --> smc911x_phy_check_media smc911x_phy_read: phyaddr=0x1, phyreg=0x01, phydata=0x7809 smc911x_phy_read: phyaddr=0x1, phyreg=0x01, phydata=0x7809 eth0: link down Restarting tasks ... eth0: --> smc911x_hard_start_xmit eth0: --> smc911x_hardware_send_pkt eth0: --> smc911x_hard_start_xmit eth0: --> smc911x_hardware_send_pkt eth0: --> smc911x_hard_start_xmit eth0: --> smc911x_hardware_send_pkt nfs: server 172.24.190.217 not responding, still trying nfs: server 172.24.190.217 not responding, still trying The following change makes it work fine: (The change within smc911x_drv_probe function was to get rid of a compilation warning). Signed-off-by: Romit Dasgupta Signed-off-by: Jeff Garzik --- drivers/net/smc911x.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c index 5051554ff05..1f26ab0e798 100644 --- a/drivers/net/smc911x.c +++ b/drivers/net/smc911x.c @@ -2050,7 +2050,9 @@ err_out: */ static int smc911x_drv_probe(struct platform_device *pdev) { +#ifdef SMC_DYNAMIC_BUS_CONFIG struct smc911x_platdata *pd = pdev->dev.platform_data; +#endif struct net_device *ndev; struct resource *res; struct smc911x_local *lp; @@ -2182,9 +2184,9 @@ static int smc911x_drv_resume(struct platform_device *dev) if (netif_running(ndev)) { smc911x_reset(ndev); - smc911x_enable(ndev); if (lp->phy_type != 0) smc911x_phy_configure(&lp->phy_configure); + smc911x_enable(ndev); netif_device_attach(ndev); } } -- cgit v1.2.3-70-g09d2