/* drivers/net/tulip/pnic.c Maintained by Jeff Garzik <jgarzik@pobox.com> 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 refer to Documentation/DocBook/tulip-user.{pdf,ps,html} for more information on this driver, or visit the project Web page at http://sourceforge.net/projects/tulip/ */ #include <linux/kernel.h> #include <linux/pci.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) printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n", dev->name, 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) printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n", dev->name, 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 || jiffies - dev->trans_start > 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) printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s " "CSR5 %8.8x.\n", dev->name, 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) printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, " "CSR5 %8.8x, PHY %3.3x.\n", dev->name, 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) printk(KERN_INFO "%s: Changing PNIC configuration to %s " "%s-duplex, CSR6 %8.8x.\n", dev->name, 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) printk(KERN_INFO "%s: sw timer wakeup.\n", dev->name); disable_irq(dev->irq); tulip_refill_rx(dev); enable_irq(dev->irq); iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); } }