--- /dev/null
+/*
+ drivers/net/ethernet/dec/tulip/pnic.c
+
+ Copyright 2000,2001 The Linux Kernel Team
+ Written/copyright 1994-2001 by Donald Becker.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ Please submit bugs to http://bugzilla.kernel.org/ .
+*/
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include "tulip.h"
+
+
+void pnic_do_nway(struct net_device *dev)
+{
+ struct tulip_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->base_addr;
+ u32 phy_reg = ioread32(ioaddr + 0xB8);
+ u32 new_csr6 = tp->csr6 & ~0x40C40200;
+
+ if (phy_reg & 0x78000000) { /* Ignore baseT4 */
+ if (phy_reg & 0x20000000) dev->if_port = 5;
+ else if (phy_reg & 0x40000000) dev->if_port = 3;
+ else if (phy_reg & 0x10000000) dev->if_port = 4;
+ else if (phy_reg & 0x08000000) dev->if_port = 0;
+ tp->nwayset = 1;
+ new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000;
+ iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12);
+ if (dev->if_port & 1)
+ iowrite32(0x1F868, ioaddr + 0xB8);
+ if (phy_reg & 0x30000000) {
+ tp->full_duplex = 1;
+ new_csr6 |= 0x00000200;
+ }
+ if (tulip_debug > 1)
+ netdev_dbg(dev, "PNIC autonegotiated status %08x, %s\n",
+ phy_reg, medianame[dev->if_port]);
+ if (tp->csr6 != new_csr6) {
+ tp->csr6 = new_csr6;
+ /* Restart Tx */
+ tulip_restart_rxtx(tp);
+ dev->trans_start = jiffies;
+ }
+ }
+}
+
+void pnic_lnk_change(struct net_device *dev, int csr5)
+{
+ struct tulip_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->base_addr;
+ int phy_reg = ioread32(ioaddr + 0xB8);
+
+ if (tulip_debug > 1)
+ netdev_dbg(dev, "PNIC link changed state %08x, CSR5 %08x\n",
+ phy_reg, csr5);
+ if (ioread32(ioaddr + CSR5) & TPLnkFail) {
+ iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7);
+ /* If we use an external MII, then we mustn't use the
+ * internal negotiation.
+ */
+ if (tulip_media_cap[dev->if_port] & MediaIsMII)
+ return;
+ if (! tp->nwayset || time_after(jiffies, dev_trans_start(dev) + 1*HZ)) {
+ tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff);
+ iowrite32(tp->csr6, ioaddr + CSR6);
+ iowrite32(0x30, ioaddr + CSR12);
+ iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */
+ dev->trans_start = jiffies;
+ }
+ } else if (ioread32(ioaddr + CSR5) & TPLnkPass) {
+ if (tulip_media_cap[dev->if_port] & MediaIsMII) {
+ spin_lock(&tp->lock);
+ tulip_check_duplex(dev);
+ spin_unlock(&tp->lock);
+ } else {
+ pnic_do_nway(dev);
+ }
+ iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7);
+ }
+}
+
+void pnic_timer(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct tulip_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->base_addr;
+ int next_tick = 60*HZ;
+
+ if(!ioread32(ioaddr + CSR7)) {
+ /* the timer was called due to a work overflow
+ * in the interrupt handler. Skip the connection
+ * checks, the nic is definitively speaking with
+ * his link partner.
+ */
+ goto too_good_connection;
+ }
+
+ if (tulip_media_cap[dev->if_port] & MediaIsMII) {
+ spin_lock_irq(&tp->lock);
+ if (tulip_check_duplex(dev) > 0)
+ next_tick = 3*HZ;
+ spin_unlock_irq(&tp->lock);
+ } else {
+ int csr12 = ioread32(ioaddr + CSR12);
+ int new_csr6 = tp->csr6 & ~0x40C40200;
+ int phy_reg = ioread32(ioaddr + 0xB8);
+ int csr5 = ioread32(ioaddr + CSR5);
+
+ if (tulip_debug > 1)
+ netdev_dbg(dev, "PNIC timer PHY status %08x, %s CSR5 %08x\n",
+ phy_reg, medianame[dev->if_port], csr5);
+ if (phy_reg & 0x04000000) { /* Remote link fault */
+ iowrite32(0x0201F078, ioaddr + 0xB8);
+ next_tick = 1*HZ;
+ tp->nwayset = 0;
+ } else if (phy_reg & 0x78000000) { /* Ignore baseT4 */
+ pnic_do_nway(dev);
+ next_tick = 60*HZ;
+ } else if (csr5 & TPLnkFail) { /* 100baseTx link beat */
+ if (tulip_debug > 1)
+ netdev_dbg(dev, "%s link beat failed, CSR12 %04x, CSR5 %08x, PHY %03x\n",
+ medianame[dev->if_port],
+ csr12,
+ ioread32(ioaddr + CSR5),
+ ioread32(ioaddr + 0xB8));
+ next_tick = 3*HZ;
+ if (tp->medialock) {
+ } else if (tp->nwayset && (dev->if_port & 1)) {
+ next_tick = 1*HZ;
+ } else if (dev->if_port == 0) {
+ dev->if_port = 3;
+ iowrite32(0x33, ioaddr + CSR12);
+ new_csr6 = 0x01860000;
+ iowrite32(0x1F868, ioaddr + 0xB8);
+ } else {
+ dev->if_port = 0;
+ iowrite32(0x32, ioaddr + CSR12);
+ new_csr6 = 0x00420000;
+ iowrite32(0x1F078, ioaddr + 0xB8);
+ }
+ if (tp->csr6 != new_csr6) {
+ tp->csr6 = new_csr6;
+ /* Restart Tx */
+ tulip_restart_rxtx(tp);
+ dev->trans_start = jiffies;
+ if (tulip_debug > 1)
+ dev_info(&dev->dev,
+ "Changing PNIC configuration to %s %s-duplex, CSR6 %08x\n",
+ medianame[dev->if_port],
+ tp->full_duplex ? "full" : "half",
+ new_csr6);
+ }
+ }
+ }
+too_good_connection:
+ mod_timer(&tp->timer, RUN_AT(next_tick));
+ if(!ioread32(ioaddr + CSR7)) {
+ if (tulip_debug > 1)
+ dev_info(&dev->dev, "sw timer wakeup\n");
+ disable_irq(dev->irq);
+ tulip_refill_rx(dev);
+ enable_irq(dev->irq);
+ iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
+ }
+}
Code Review / kvmfornfv.git / blobdiff