/* drivers/net/tulip/21142.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/pci.h> #include <linux/delay.h> #include "tulip.h" static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list of available transceivers. */ void t21142_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 csr12 = ioread32(ioaddr + CSR12); int next_tick = 60*HZ; int new_csr6 = 0; if (tulip_debug > 2) printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n", dev->name, csr12, medianame[dev->if_port]); if (tulip_media_cap[dev->if_port] & MediaIsMII) { if (tulip_check_duplex(dev) < 0) { netif_carrier_off(dev); next_tick = 3*HZ; } else { netif_carrier_on(dev); next_tick = 60*HZ; } } else if (tp->nwayset) { /* Don't screw up a negotiated session! */ if (tulip_debug > 1) printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n", dev->name, medianame[dev->if_port], csr12); } else if (tp->medialock) { ; } else if (dev->if_port == 3) { if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ if (tulip_debug > 1) printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, " "trying NWay.\n", dev->name, csr12); t21142_start_nway(dev); next_tick = 3*HZ; } } else if ((csr12 & 0x7000) != 0x5000) { /* Negotiation failed. Search media types. */ if (tulip_debug > 1) printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n", dev->name, csr12); if (!(csr12 & 4)) { /* 10mbps link beat good. */ new_csr6 = 0x82420000; dev->if_port = 0; iowrite32(0, ioaddr + CSR13); iowrite32(0x0003FFFF, ioaddr + CSR14); iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15); iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13); } else { /* Select 100mbps port to check for link beat. */ new_csr6 = 0x83860000; dev->if_port = 3; iowrite32(0, ioaddr + CSR13); iowrite32(0x0003FF7F, ioaddr + CSR14); iowrite16(8, ioaddr + CSR15); iowrite32(1, ioaddr + CSR13); } if (tulip_debug > 1) printk(KERN_INFO"%s: Testing new 21143 media %s.\n", dev->name, medianame[dev->if_port]); if (new_csr6 != (tp->csr6 & ~0x00D5)) { tp->csr6 &= 0x00D5; tp->csr6 |= new_csr6; iowrite32(0x0301, ioaddr + CSR12); tulip_restart_rxtx(tp); } next_tick = 3*HZ; } /* mod_timer synchronizes us with potential add_timer calls * from interrupts. */ mod_timer(&tp->timer, RUN_AT(next_tick)); } void t21142_start_nway(struct net_device *dev) { struct tulip_private *tp = netdev_priv(dev); void __iomem *ioaddr = tp->base_addr; int csr14 = ((tp->sym_advertise & 0x0780) << 9) | ((tp->sym_advertise & 0x0020) << 1) | 0xffbf; dev->if_port = 0; tp->nway = tp->mediasense = 1; tp->nwayset = tp->lpar = 0; if (tulip_debug > 1) printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n", dev->name, csr14); iowrite32(0x0001, ioaddr + CSR13); udelay(100); iowrite32(csr14, ioaddr + CSR14); tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); iowrite32(tp->csr6, ioaddr + CSR6); if (tp->mtable && tp->mtable->csr15dir) { iowrite32(tp->mtable->csr15dir, ioaddr + CSR15); iowrite32(tp->mtable->csr15val, ioaddr + CSR15); } else iowrite16(0x0008, ioaddr + CSR15); iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ } void t21142_lnk_change(struct net_device *dev, int csr5) { struct tulip_private *tp = netdev_priv(dev); void __iomem *ioaddr = tp->base_addr; int csr12 = ioread32(ioaddr + CSR12); if (tulip_debug > 1) printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, " "%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14)); /* If NWay finished and we have a negotiated partner capability. */ if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { int setup_done = 0; int negotiated = tp->sym_advertise & (csr12 >> 16); tp->lpar = csr12 >> 16; tp->nwayset = 1; if (negotiated & 0x0100) dev->if_port = 5; else if (negotiated & 0x0080) dev->if_port = 3; else if (negotiated & 0x0040) dev->if_port = 4; else if (negotiated & 0x0020) dev->if_port = 0; else { tp->nwayset = 0; if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) dev->if_port = 3; } tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; if (tulip_debug > 1) { if (tp->nwayset) printk(KERN_INFO "%s: Switching to %s based on link " "negotiation %4.4x & %4.4x = %4.4x.\n", dev->name, medianame[dev->if_port], tp->sym_advertise, tp->lpar, negotiated); else printk(KERN_INFO "%s: Autonegotiation failed, using %s," " link beat status %4.4x.\n", dev->name, medianame[dev->if_port], csr12); } if (tp->mtable) { int i; for (i = 0; i < tp->mtable->leafcount; i++) if (tp->mtable->mleaf[i].media == dev->if_port) { int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65))); tp->cur_index = i; tulip_select_media(dev, startup); setup_done = 1; break; } } if ( ! setup_done) { tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff); if (tp->full_duplex) tp->csr6 |= 0x0200; iowrite32(1, ioaddr + CSR13); } #if 0 /* Restart shouldn't be needed. */ iowrite32(tp->csr6 | RxOn, ioaddr + CSR6); if (tulip_debug > 2) printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n", dev->name, ioread32(ioaddr + CSR5)); #endif tulip_start_rxtx(tp); if (tulip_debug > 2) printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n", dev->name, tp->csr6, ioread32(ioaddr + CSR6), ioread32(ioaddr + CSR12)); } else if ((tp->nwayset && (csr5 & 0x08000000) && (dev->if_port == 3 || dev->if_port == 5) && (csr12 & 2) == 2) || (tp->nway && (csr5 & (TPLnkFail)))) { /* Link blew? Maybe restart NWay. */ del_timer_sync(&tp->timer); t21142_start_nway(dev); tp->timer.expires = RUN_AT(3*HZ); add_timer(&tp->timer); } else if (dev->if_port == 3 || dev->if_port == 5) { if (tulip_debug > 1) printk(KERN_INFO"%s: 21143 %s link beat %s.\n", dev->name, medianame[dev->if_port], (csr12 & 2) ? "failed" : "good"); if ((csr12 & 2) && ! tp->medialock) { del_timer_sync(&tp->timer); t21142_start_nway(dev); tp->timer.expires = RUN_AT(3*HZ); add_timer(&tp->timer); } else if (dev->if_port == 5) iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14); } else if (dev->if_port == 0 || dev->if_port == 4) { if ((csr12 & 4) == 0) printk(KERN_INFO"%s: 21143 10baseT link beat good.\n", dev->name); } else if (!(csr12 & 4)) { /* 10mbps link beat good. */ if (tulip_debug) printk(KERN_INFO"%s: 21143 10mbps sensed media.\n", dev->name); dev->if_port = 0; } else if (tp->nwayset) { if (tulip_debug) printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n", dev->name, medianame[dev->if_port], tp->csr6); } else { /* 100mbps link beat good. */ if (tulip_debug) printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n", dev->name); dev->if_port = 3; tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); iowrite32(0x0003FF7F, ioaddr + CSR14); iowrite32(0x0301, ioaddr + CSR12); tulip_restart_rxtx(tp); } }