diff options
Diffstat (limited to 'drivers/net/tulip/21142.c')
| -rw-r--r-- | drivers/net/tulip/21142.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/drivers/net/tulip/21142.c b/drivers/net/tulip/21142.c new file mode 100644 index 000000000000..5db694c4eb02 --- /dev/null +++ b/drivers/net/tulip/21142.c @@ -0,0 +1,245 @@ +/* + 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 == 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); + } +} + + |