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https://github.com/torvalds/linux.git
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[PATCH] forcedeth config: flow control
This patch allows for configurable flow control through ethtool support. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Ayaz Abdulla
Jeff Garzik
parent
eafa59f6bc
commit
b6d0773fa7
@ -519,6 +519,9 @@ typedef union _ring_type {
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#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
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#define NV_PAUSEFRAME_RX_ENABLE 0x0004
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#define NV_PAUSEFRAME_TX_ENABLE 0x0008
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#define NV_PAUSEFRAME_RX_REQ 0x0010
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#define NV_PAUSEFRAME_TX_REQ 0x0020
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#define NV_PAUSEFRAME_AUTONEG 0x0040
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/* MSI/MSI-X defines */
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#define NV_MSI_X_MAX_VECTORS 8
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@ -1868,16 +1871,16 @@ static void nv_set_multicast(struct net_device *dev)
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u8 __iomem *base = get_hwbase(dev);
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u32 addr[2];
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u32 mask[2];
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u32 pff;
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u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
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memset(addr, 0, sizeof(addr));
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memset(mask, 0, sizeof(mask));
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if (dev->flags & IFF_PROMISC) {
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printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name);
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pff = NVREG_PFF_PROMISC;
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pff |= NVREG_PFF_PROMISC;
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} else {
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pff = NVREG_PFF_MYADDR;
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pff |= NVREG_PFF_MYADDR;
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if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
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u32 alwaysOff[2];
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@ -1922,6 +1925,35 @@ static void nv_set_multicast(struct net_device *dev)
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spin_unlock_irq(&np->lock);
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}
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void nv_update_pause(struct net_device *dev, u32 pause_flags)
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{
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struct fe_priv *np = netdev_priv(dev);
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u8 __iomem *base = get_hwbase(dev);
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np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
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if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
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u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
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if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
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writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
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np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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} else {
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writel(pff, base + NvRegPacketFilterFlags);
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}
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}
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if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
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u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
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if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
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writel(NVREG_TX_PAUSEFRAME_ENABLE, base + NvRegTxPauseFrame);
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writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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} else {
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writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
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writel(regmisc, base + NvRegMisc1);
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}
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}
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}
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/**
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* nv_update_linkspeed: Setup the MAC according to the link partner
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* @dev: Network device to be configured
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@ -1944,7 +1976,7 @@ static int nv_update_linkspeed(struct net_device *dev)
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int newdup = np->duplex;
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int mii_status;
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int retval = 0;
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u32 control_1000, status_1000, phyreg;
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u32 control_1000, status_1000, phyreg, pause_flags;
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/* BMSR_LSTATUS is latched, read it twice:
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* we want the current value.
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@ -1990,6 +2022,11 @@ static int nv_update_linkspeed(struct net_device *dev)
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goto set_speed;
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}
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adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
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lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
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dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
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dev->name, adv, lpa);
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retval = 1;
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if (np->gigabit == PHY_GIGABIT) {
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control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
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@ -2005,11 +2042,6 @@ static int nv_update_linkspeed(struct net_device *dev)
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}
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}
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adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
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lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
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dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
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dev->name, adv, lpa);
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/* FIXME: handle parallel detection properly */
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adv_lpa = lpa & adv;
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if (adv_lpa & LPA_100FULL) {
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@ -2068,55 +2100,45 @@ set_speed:
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writel(np->linkspeed, base + NvRegLinkSpeed);
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pci_push(base);
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/* setup pause frame based on advertisement and link partner */
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np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
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pause_flags = 0;
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/* setup pause frame */
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if (np->duplex != 0) {
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if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
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adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
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lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
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switch (adv_pause) {
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case (ADVERTISE_PAUSE_CAP):
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if (lpa_pause & LPA_PAUSE_CAP) {
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE;
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pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
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pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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}
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break;
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case (ADVERTISE_PAUSE_ASYM):
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if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
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{
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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}
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break;
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case (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM):
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if (lpa_pause & LPA_PAUSE_CAP)
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{
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE;
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pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
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pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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}
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if (lpa_pause == LPA_PAUSE_ASYM)
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{
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np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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}
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break;
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}
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}
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if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
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u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
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if (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE)
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writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
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else
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writel(pff, base + NvRegPacketFilterFlags);
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}
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if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
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u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
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if (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
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writel(NVREG_TX_PAUSEFRAME_ENABLE, base + NvRegTxPauseFrame);
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writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
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} else {
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writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
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writel(regmisc, base + NvRegMisc1);
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pause_flags = np->pause_flags;
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}
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}
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nv_update_pause(dev, pause_flags);
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return retval;
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}
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@ -2597,11 +2619,15 @@ static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
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if (ecmd->advertising & ADVERTISED_10baseT_Half)
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adv |= ADVERTISE_10HALF;
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if (ecmd->advertising & ADVERTISED_10baseT_Full)
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adv |= ADVERTISE_10FULL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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adv |= ADVERTISE_10FULL;
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if (ecmd->advertising & ADVERTISED_100baseT_Half)
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adv |= ADVERTISE_100HALF;
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if (ecmd->advertising & ADVERTISED_100baseT_Full)
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adv |= ADVERTISE_100FULL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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adv |= ADVERTISE_100FULL;
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if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
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adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
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adv |= ADVERTISE_PAUSE_ASYM;
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mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
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if (np->gigabit == PHY_GIGABIT) {
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@ -2626,11 +2652,20 @@ static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
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if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
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adv |= ADVERTISE_10HALF;
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if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
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adv |= ADVERTISE_10FULL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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adv |= ADVERTISE_10FULL;
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if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
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adv |= ADVERTISE_100HALF;
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if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
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adv |= ADVERTISE_100FULL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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adv |= ADVERTISE_100FULL;
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np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
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if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
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adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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}
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if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
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adv |= ADVERTISE_PAUSE_ASYM;
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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}
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mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
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np->fixed_mode = adv;
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@ -2856,6 +2891,86 @@ exit:
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return -ENOMEM;
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}
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static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
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{
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struct fe_priv *np = netdev_priv(dev);
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pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
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pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
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pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
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}
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static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
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{
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struct fe_priv *np = netdev_priv(dev);
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int adv, bmcr;
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if ((!np->autoneg && np->duplex == 0) ||
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(np->autoneg && !pause->autoneg && np->duplex == 0)) {
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printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
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dev->name);
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return -EINVAL;
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}
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if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
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printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
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return -EINVAL;
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}
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netif_carrier_off(dev);
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if (netif_running(dev)) {
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nv_disable_irq(dev);
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spin_lock_bh(&dev->xmit_lock);
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spin_lock(&np->lock);
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/* stop engines */
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nv_stop_rx(dev);
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nv_stop_tx(dev);
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spin_unlock(&np->lock);
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spin_unlock_bh(&dev->xmit_lock);
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}
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np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
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if (pause->rx_pause)
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np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
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if (pause->tx_pause)
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np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
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if (np->autoneg && pause->autoneg) {
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np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
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adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
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adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
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if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
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adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
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if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
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adv |= ADVERTISE_PAUSE_ASYM;
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mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
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if (netif_running(dev))
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printk(KERN_INFO "%s: link down.\n", dev->name);
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bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
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bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
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mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
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} else {
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np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
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if (pause->rx_pause)
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np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
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if (pause->tx_pause)
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np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
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if (!netif_running(dev))
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nv_update_linkspeed(dev);
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else
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nv_update_pause(dev, np->pause_flags);
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}
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if (netif_running(dev)) {
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nv_start_rx(dev);
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nv_start_tx(dev);
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nv_enable_irq(dev);
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}
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return 0;
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}
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static struct ethtool_ops ops = {
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.get_drvinfo = nv_get_drvinfo,
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.get_link = ethtool_op_get_link,
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@ -2871,6 +2986,8 @@ static struct ethtool_ops ops = {
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.set_tso = nv_set_tso,
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.get_ringparam = nv_get_ringparam,
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.set_ringparam = nv_set_ringparam,
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.get_pauseparam = nv_get_pauseparam,
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.set_pauseparam = nv_set_pauseparam,
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};
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static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
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@ -3346,9 +3463,9 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
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np->msi_flags |= NV_MSI_X_CAPABLE;
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}
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np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE;
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np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
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if (id->driver_data & DEV_HAS_PAUSEFRAME_TX) {
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np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE;
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np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
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}
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