Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/drivers/net/ethernet/dec/tulip/pnic.c b/drivers/net/ethernet/dec/tulip/pnic.c
new file mode 100644
index 000000000..653bde48e
--- /dev/null
+++ b/drivers/net/ethernet/dec/tulip/pnic.c
@@ -0,0 +1,170 @@
+/*
+	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;
+
+	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);
+			netif_trans_update(dev);
+		}
+	}
+}
+
+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. */
+			netif_trans_update(dev);
+		}
+	} 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(struct timer_list *t)
+{
+	struct tulip_private *tp = from_timer(tp, t, timer);
+	struct net_device *dev = tp->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);
+				netif_trans_update(dev);
+				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);
+	}
+}