From: Jesse Huang <[EMAIL PROTECTED]>
ipg_config_autoneg rewrite
Change Logs:
ipg_config_autoneg rewrite
---
drivers/net/ipg.c | 307
++++++-----------------------------------------------
1 files changed, 32 insertions(+), 275 deletions(-)
c3f6df15430f9c05e19f36b8485b31110d52a091
diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c
index a996c45..f859107 100644
--- a/drivers/net/ipg.c
+++ b/drivers/net/ipg.c
@@ -484,26 +484,18 @@ static int ipg_config_autoneg(struct net
{
struct ipg_nic_private *sp = netdev_priv(dev);
void __iomem *ioaddr = sp->ioaddr;
+ u8 phyctrl;
u32 asicctrl;
- u32 mac_ctl;
- int phyaddr = 0;
- u16 status = 0;
- u16 advertisement;
- u16 linkpartner_ability;
- u16 gigadvertisement;
- u16 giglinkpartner_ability;
- u16 techabilities;
int fiber;
int gig;
int fullduplex;
int txflowcontrol;
int rxflowcontrol;
- u8 phyctrl;
IPG_DEBUG_MSG("_config_autoneg\n");
asicctrl = ioread32(ioaddr + ASIC_CTRL);
- phyctrl = ioread8(ioaddr + PHY_CTRL);
+ phyctrl = ioread32(ioaddr + PHY_CTRL);
/* Set flags for use in resolving auto-negotation, assuming
* non-1000Mbps, half duplex, no flow control.
@@ -519,14 +511,13 @@ static int ipg_config_autoneg(struct net
*/
sp->tenmbpsmode = 0;
- printk("Link speed = ");
+ printk(KERN_INFO "Link speed = ");
/* Determine actual speed of operation. */
switch (phyctrl & IPG_PC_LINK_SPEED) {
case IPG_PC_LINK_SPEED_10MBPS:
printk("10Mbps.\n");
- printk(KERN_INFO "%s: 10Mbps operational mode enabled.\n",
- dev->name);
+ printk("%s: 10Mbps operational mode enabled.\n",dev->name);
sp->tenmbpsmode = 1;
break;
case IPG_PC_LINK_SPEED_100MBPS:
@@ -538,283 +529,49 @@ static int ipg_config_autoneg(struct net
break;
default:
printk("undefined!\n");
- }
-
- fiber = ipg_sti_fiber_detect(dev);
-
- /* Determine if auto-negotiation resolution is necessary.
- * First check for fiber based media 10/100 media.
- */
- if ((fiber == 1) &&
- (asicctrl & (IPG_AC_PHY_SPEED10 | IPG_AC_PHY_SPEED100))) {
- printk(KERN_INFO
- "%s: Fiber based PHY, setting full duplex, no flow
control.\n",
- dev->name);
-
- mac_ctl = ioread32(ioaddr + MAC_CTRL);
- mac_ctl |= IPG_MC_DUPLEX_SELECT_FD;
- mac_ctl &= ~IPG_MC_TX_FLOW_CONTROL_ENABLE;
- mac_ctl &= ~IPG_MC_RX_FLOW_CONTROL_ENABLE;
-
- iowrite32(IPG_MC_RSVD_MASK & mac_ctl, ioaddr + MAC_CTRL);
-
return 0;
}
- /* Determine if PHY is auto-negotiation capable. */
- phyaddr = ipg_find_phyaddr(dev);
-
- if (phyaddr == -1) {
- printk(KERN_INFO
- "%s: Error on read to GMII/MII Status register.\n",
- dev->name);
- return -EILSEQ;
- }
- sp->mii_if.phy_id = phyaddr;
-
- IPG_DEBUG_MSG("GMII/MII PHY address = %x\n", phyaddr);
-
- status = mdio_read(dev, phyaddr, MII_BMSR);
-
- printk("PHYStatus = %x \n", status);
- if ((status & BMSR_ANEGCAPABLE) == 0) {
- printk(KERN_INFO
- "%s: Error PHY unable to perform auto-negotiation.\n",
- dev->name);
- return -EILSEQ;
- }
-
- advertisement = mdio_read(dev, phyaddr, MII_ADVERTISE);
- linkpartner_ability = mdio_read(dev, phyaddr, MII_LPA);
-
- printk("PHYadvertisement=%x LinkPartner=%x \n", advertisement,
- linkpartner_ability);
- if ((advertisement == 0xFFFF) || (linkpartner_ability == 0xFFFF)) {
- printk(KERN_INFO
- "%s: Error on read to GMII/MII registers 4 and/or 5.\n",
- dev->name);
- return -EILSEQ;
+ if (phyctrl & IPG_PC_DUPLEX_STATUS) {
+ fullduplex = 1;
+ txflowcontrol = 1;
+ rxflowcontrol = 1;
+ } else {
+ fullduplex = 0;
+ txflowcontrol = 0;
+ rxflowcontrol = 0;
}
- fiber = ipg_tmi_fiber_detect(dev, phyaddr);
-
- /* Resolve full/half duplex if 1000BASE-X. */
- if ((gig == 1) && (fiber == 1)) {
- int bmcr;
- /*
- * Compare the full duplex bits in the GMII registers
- * for the local device, and the link partner. If these
- * bits are logic 1 in both registers, configure the
- * IPG for full duplex operation.
- */
- bmcr = mdio_read(dev, phyaddr, MII_BMCR);
+ /* Configure full duplex, and flow control. */
+ if (fullduplex == 1) {
+ /* Configure IPG for full duplex operation. */
+ printk(KERN_INFO "setting full duplex, ");
- if ((advertisement & ADVERTISE_1000XFULL) ==
- (linkpartner_ability & ADVERTISE_1000XFULL)) {
- fullduplex = 1;
+ iowrite32(ioread32(ioaddr + MAC_CTRL) | IPG_MC_DUPLEX_SELECT_FD,
ioaddr + MAC_CTRL);
- /* In 1000BASE-X using IPG's internal PCS
- * layer, so write to the GMII duplex bit.
- */
- bmcr |= ADVERTISE_1000HALF; // Typo ?
+ if (txflowcontrol == 1) {
+ printk("TX flow control");
+ iowrite32(ioread32(ioaddr + MAC_CTRL) |
IPG_MC_TX_FLOW_CONTROL_ENABLE, ioaddr + MAC_CTRL);
} else {
- fullduplex = 0;
-
- /* In 1000BASE-X using IPG's internal PCS
- * layer, so write to the GMII duplex bit.
- */
- bmcr &= ~ADVERTISE_1000HALF; // Typo ?
+ printk("no TX flow control");
+ iowrite32(ioread32(ioaddr + MAC_CTRL) &
~IPG_MC_TX_FLOW_CONTROL_ENABLE, ioaddr + MAC_CTRL);
}
- mdio_write(dev, phyaddr, MII_BMCR, bmcr);
- }
- /* Resolve full/half duplex if 1000BASE-T. */
- if ((gig == 1) && (fiber == 0)) {
- /* Read the 1000BASE-T "Control" and "Status"
- * registers which represent the advertised and
- * link partner abilities exchanged via next page
- * transfers.
- */
- gigadvertisement = mdio_read(dev, phyaddr, MII_CTRL1000);
- giglinkpartner_ability = mdio_read(dev, phyaddr, MII_STAT1000);
-
- /* Compare the full duplex bits in the 1000BASE-T GMII
- * registers for the local device, and the link partner.
- * If these bits are logic 1 in both registers, configure
- * the IPG for full duplex operation.
- */
- if ((gigadvertisement & ADVERTISE_1000FULL) &&
- (giglinkpartner_ability & ADVERTISE_1000FULL)) {
- fullduplex = 1;
+ if (rxflowcontrol == 1) {
+ printk(", RX flow control.");
+ iowrite32(ioread32(ioaddr+MAC_CTRL) |
IPG_MC_RX_FLOW_CONTROL_ENABLE,
ioaddr + MAC_CTRL);
} else {
- fullduplex = 0;
- }
- }
-
- /* Resolve full/half duplex for 10/100BASE-T. */
- if (gig == 0) {
- /* Autonegotiation Priority Resolution algorithm, as defined in
- * IEEE 802.3 Annex 28B.
- */
- if (((advertisement & ADVERTISE_SLCT) ==
- MII_PHY_SELECTOR_IEEE8023) &&
- ((linkpartner_ability & ADVERTISE_SLCT) ==
- MII_PHY_SELECTOR_IEEE8023)) {
- techabilities = (advertisement & linkpartner_ability &
- MII_PHY_TECHABILITYFIELD);
-
- fullduplex = 0;
-
- /* 10BASE-TX half duplex is lowest priority. */
- if (techabilities & LPA_10HALF)
- fullduplex = 0;
-
- if (techabilities & LPA_10FULL)
- fullduplex = 1;
-
- if (techabilities & LPA_100HALF)
- fullduplex = 0;
-
- if (techabilities & LPA_100BASE4)
- fullduplex = 0;
-
- /* 100BASE-TX half duplex is highest priority.
*///Sorbica full
duplex ?
- if (techabilities & LPA_100FULL)
- fullduplex = 1;
-
- if (fullduplex == 1) {
- /* If in full duplex mode, determine if PAUSE
- * functionality is supported by the local
- * device, and the link partner.
- */
- if (techabilities & LPA_PAUSE_CAP) {
- txflowcontrol = 1;
- rxflowcontrol = 1;
- } else {
- txflowcontrol = 0;
- rxflowcontrol = 0;
- }
- }
+ printk(", no RX flow control.");
+ iowrite32(ioread32(ioaddr+MAC_CTRL) &
~IPG_MC_RX_FLOW_CONTROL_ENABLE, ioaddr + MAC_CTRL);
}
- }
- /* If in 1000Mbps, fiber, and full duplex mode, resolve
- * 1000BASE-X PAUSE capabilities. */
- if ((fullduplex == 1) && (fiber == 1) && (gig == 1)) {
- /* In full duplex mode, resolve PAUSE
- * functionality.
- */
- u8 flow_ctl;
-#define LPA_PAUSE_ANY (LPA_1000XPAUSE_ASYM | LPA_1000XPAUSE)
-
- flow_ctl = (advertisement & LPA_PAUSE_ANY) >> 5;
- flow_ctl |= (linkpartner_ability & LPA_PAUSE_ANY) >> 7;
- switch (flow_ctl) {
- case 0x7:
- txflowcontrol = 1;
- rxflowcontrol = 0;
- break;
-
- case 0xA:
- case 0xB:
- case 0xE:
- case 0xF:
- txflowcontrol = 1;
- rxflowcontrol = 1;
- break;
-
- case 0xD:
- txflowcontrol = 0;
- rxflowcontrol = 1;
- break;
+ printk("\n");
+ } else {
+ /* Configure IPG for half duplex operation. */
+ printk(KERN_INFO "setting half duplex, no TX flow control, no
RX flow control.\n");
- default:
- txflowcontrol = 0;
- rxflowcontrol = 0;
- }
+ iowrite32(ioread32(ioaddr+MAC_CTRL) & ~IPG_MC_DUPLEX_SELECT_FD &
~IPG_MC_TX_FLOW_CONTROL_ENABLE & ~IPG_MC_RX_FLOW_CONTROL_ENABLE, ioaddr
+ MAC_CTRL);
}
-
- /*
- * If in 1000Mbps, non-fiber, full duplex mode, resolve
- * 1000BASE-T PAUSE capabilities.
- */
- if ((fullduplex == 1) && (fiber == 0) && (gig == 1)) {
- /*
- * Make sure the PHY is advertising we are PAUSE capable.
- * Otherwise advertise PAUSE and restart auto-negotiation.
- */
-#define ADVERTISE_PAUSE_ANY (ADVERTISE_PAUSE_CAP |
ADVERTISE_PAUSE_ASYM)
-
- if (!(ADVERTISE_PAUSE_ANY & advertisement)) {
- advertisement |= ADVERTISE_PAUSE_ANY;
- mdio_write(dev, phyaddr, MII_ADVERTISE, advertisement);
- mdio_write(dev, phyaddr, MII_BMCR, BMCR_ANRESTART);
-
- return -EAGAIN;
- }
- /* In full duplex mode, resolve PAUSE functionality. */
- switch (((ADVERTISE_PAUSE_ANY & advertisement) >> 0x8) |
- ((ADVERTISE_PAUSE_ANY & linkpartner_ability) >> 0xa)) {
- case 0x7:
- txflowcontrol = 1;
- rxflowcontrol = 0;
- break;
-
- case 0xA:
- case 0xB:
- case 0xE:
- case 0xF:
- txflowcontrol = 1;
- rxflowcontrol = 1;
- break;
-
- case 0xD:
- txflowcontrol = 0;
- rxflowcontrol = 1;
- break;
-
- default:
- txflowcontrol = 0;
- rxflowcontrol = 0;
- }
- }
-
- /*
- * If in 10/100Mbps, non-fiber, full duplex mode, assure
- * 10/100BASE-T PAUSE capabilities are advertised.
- * Otherwise advertise PAUSE and restart auto-negotiation.
- */
- if ((fullduplex == 1) && (fiber == 0) && (gig == 0) &&
- !(advertisement & ADVERTISE_PAUSE_CAP)) {
- advertisement |= ADVERTISE_PAUSE_CAP;
- mdio_write(dev, phyaddr, MII_ADVERTISE, advertisement);
- mdio_write(dev, phyaddr, MII_BMCR, BMCR_ANRESTART);
- return -EAGAIN;
- }
-
- printk(KERN_INFO "%s: %s based PHY, ", dev->name,
- (fiber == 1) ? "fiber" : "copper");
-
- /* Configure full duplex, and flow control. */
-
- mac_ctl = ioread32(ioaddr + MAC_CTRL);
-
- mac_ctl &= ~IPG_MC_DUPLEX_SELECT_FD;
- mac_ctl &= ~IPG_MC_TX_FLOW_CONTROL_ENABLE;
- mac_ctl &= ~IPG_MC_RX_FLOW_CONTROL_ENABLE;
-
- if (fullduplex == 1) {
- mac_ctl |= IPG_MC_DUPLEX_SELECT_FD;
-
- if (txflowcontrol == 1)
- mac_ctl |= IPG_MC_TX_FLOW_CONTROL_ENABLE;
-
- if (rxflowcontrol == 1)
- mac_ctl |= IPG_MC_RX_FLOW_CONTROL_ENABLE;
- }
-
- iowrite32(IPG_MC_RSVD_MASK & mac_ctl, ioaddr + MAC_CTRL);
-
return 0;
}
--
1.3.2
-
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