diff options
Diffstat (limited to 'drivers/net/tulip/pnic.c')
| -rw-r--r-- | drivers/net/tulip/pnic.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/net/tulip/pnic.c b/drivers/net/tulip/pnic.c new file mode 100644 index 000000000..445d4a440 --- /dev/null +++ b/drivers/net/tulip/pnic.c @@ -0,0 +1,146 @@ +/* + drivers/net/tulip/pnic.c + + Maintained by Jeff Garzik <jgarzik@mandrakesoft.com> + Copyright 2000 The Linux Kernel Team + Written/copyright 1994-1999 by Donald Becker. + + This software may be used and distributed according to the terms + of the GNU Public License, incorporated herein by reference. + + Please refer to Documentation/networking/tulip.txt for more + information on this driver. + +*/ + +#include <linux/kernel.h> +#include "tulip.h" +#include <asm/io.h> + + +void pnic_do_nway(struct net_device *dev) +{ + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + u32 phy_reg = inl(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; + outl(0x32 | (dev->if_port & 1), ioaddr + CSR12); + if (dev->if_port & 1) + outl(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_outl_CSR6(tp, tp->csr6 | 0x0002); + tulip_outl_CSR6(tp, tp->csr6 | 0x2002); + dev->trans_start = jiffies; + } + } +} + + +void pnic_lnk_change(struct net_device *dev, int csr5) +{ + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + int phy_reg = inl(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 (inl(ioaddr + CSR5) & TPLnkFail) { + outl((inl(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7); + if (! tp->nwayset || jiffies - dev->trans_start > 1*HZ) { + tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff); + tulip_outl_CSR6(tp, tp->csr6); + outl(0x30, ioaddr + CSR12); + outl(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */ + dev->trans_start = jiffies; + } + } else if (inl(ioaddr + CSR5) & TPLnkPass) { + pnic_do_nway(dev); + outl((inl(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7); + } +} + + +void pnic_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 60*HZ; + + if (tulip_media_cap[dev->if_port] & MediaIsMII) { + if (tulip_check_duplex(dev) > 0) + next_tick = 3*HZ; + } else { + int csr12 = inl(ioaddr + CSR12); + int new_csr6 = tp->csr6 & ~0x40C40200; + int phy_reg = inl(ioaddr + 0xB8); + int csr5 = inl(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 */ + outl(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, + inl(ioaddr + CSR5), inl(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; + outl(0x33, ioaddr + CSR12); + new_csr6 = 0x01860000; + outl(0x1F868, ioaddr + 0xB8); + } else { + dev->if_port = 0; + outl(0x32, ioaddr + CSR12); + new_csr6 = 0x00420000; + outl(0x1F078, ioaddr + 0xB8); + } + if (tp->csr6 != new_csr6) { + tp->csr6 = new_csr6; + /* Restart Tx */ + tulip_outl_CSR6(tp, tp->csr6 | 0x0002); + tulip_outl_CSR6(tp, tp->csr6 | 0x2002); + 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); + } + } + } + tp->timer.expires = RUN_AT(next_tick); + add_timer(&tp->timer); +} + |