diff options
Diffstat (limited to 'drivers/net/tulip/pnic2.c')
| -rw-r--r-- | drivers/net/tulip/pnic2.c | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/drivers/net/tulip/pnic2.c b/drivers/net/tulip/pnic2.c deleted file mode 100644 index 93358ee4d830..000000000000 --- a/drivers/net/tulip/pnic2.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - drivers/net/tulip/pnic2.c - - Copyright 2000,2001 The Linux Kernel Team - Written/copyright 1994-2001 by Donald Becker. - Modified to hep support PNIC_II by Kevin B. Hendricks - - 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. - - Please submit bugs to http://bugzilla.kernel.org/ . -*/ - - -/* Understanding the PNIC_II - everything is this file is based - * on the PNIC_II_PDF datasheet which is sorely lacking in detail - * - * As I understand things, here are the registers and bits that - * explain the masks and constants used in this file that are - * either different from the 21142/3 or important for basic operation. - * - * - * CSR 6 (mask = 0xfe3bd1fd of bits not to change) - * ----- - * Bit 24 - SCR - * Bit 23 - PCS - * Bit 22 - TTM (Trasmit Threshold Mode) - * Bit 18 - Port Select - * Bit 13 - Start - 1, Stop - 0 Transmissions - * Bit 11:10 - Loop Back Operation Mode - * Bit 9 - Full Duplex mode (Advertise 10BaseT-FD is CSR14<7> is set) - * Bit 1 - Start - 1, Stop - 0 Receive - * - * - * CSR 14 (mask = 0xfff0ee39 of bits not to change) - * ------ - * Bit 19 - PAUSE-Pause - * Bit 18 - Advertise T4 - * Bit 17 - Advertise 100baseTx-FD - * Bit 16 - Advertise 100baseTx-HD - * Bit 12 - LTE - Link Test Enable - * Bit 7 - ANE - Auto Negotiate Enable - * Bit 6 - HDE - Advertise 10baseT-HD - * Bit 2 - Reset to Power down - kept as 1 for normal operation - * Bit 1 - Loop Back enable for 10baseT MCC - * - * - * CSR 12 - * ------ - * Bit 25 - Partner can do T4 - * Bit 24 - Partner can do 100baseTx-FD - * Bit 23 - Partner can do 100baseTx-HD - * Bit 22 - Partner can do 10baseT-FD - * Bit 21 - Partner can do 10baseT-HD - * Bit 15 - LPN is 1 if all above bits are valid other wise 0 - * Bit 14:12 - autonegotiation state (write 001 to start autonegotiate) - * Bit 3 - Autopolarity state - * Bit 2 - LS10B - link state of 10baseT 0 - good, 1 - failed - * Bit 1 - LS100B - link state of 100baseT 0 - good, 1 - failed - * - * - * Data Port Selection Info - *------------------------- - * - * CSR14<7> CSR6<18> CSR6<22> CSR6<23> CSR6<24> MODE/PORT - * 1 0 0 (X) 0 (X) 1 NWAY - * 0 0 1 0 (X) 0 10baseT - * 0 1 0 1 1 (X) 100baseT - * - * - */ - - - -#include "tulip.h" -#include <linux/delay.h> - - -void pnic2_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 (tulip_debug > 3) - dev_info(&dev->dev, "PNIC2 negotiation status %08x\n", - ioread32(ioaddr + CSR12)); - - if (next_tick) { - mod_timer(&tp->timer, RUN_AT(next_tick)); - } -} - - -void pnic2_start_nway(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - int csr14; - int csr12; - - /* set up what to advertise during the negotiation */ - - /* load in csr14 and mask off bits not to touch - * comment at top of file explains mask value - */ - csr14 = (ioread32(ioaddr + CSR14) & 0xfff0ee39); - - /* bit 17 - advetise 100baseTx-FD */ - if (tp->sym_advertise & 0x0100) csr14 |= 0x00020000; - - /* bit 16 - advertise 100baseTx-HD */ - if (tp->sym_advertise & 0x0080) csr14 |= 0x00010000; - - /* bit 6 - advertise 10baseT-HD */ - if (tp->sym_advertise & 0x0020) csr14 |= 0x00000040; - - /* Now set bit 12 Link Test Enable, Bit 7 Autonegotiation Enable - * and bit 0 Don't PowerDown 10baseT - */ - csr14 |= 0x00001184; - - if (tulip_debug > 1) - netdev_dbg(dev, "Restarting PNIC2 autonegotiation, csr14=%08x\n", - csr14); - - /* tell pnic2_lnk_change we are doing an nway negotiation */ - dev->if_port = 0; - tp->nway = tp->mediasense = 1; - tp->nwayset = tp->lpar = 0; - - /* now we have to set up csr6 for NWAY state */ - - tp->csr6 = ioread32(ioaddr + CSR6); - if (tulip_debug > 1) - netdev_dbg(dev, "On Entry to Nway, csr6=%08x\n", tp->csr6); - - /* mask off any bits not to touch - * comment at top of file explains mask value - */ - tp->csr6 = tp->csr6 & 0xfe3bd1fd; - - /* don't forget that bit 9 is also used for advertising */ - /* advertise 10baseT-FD for the negotiation (bit 9) */ - if (tp->sym_advertise & 0x0040) tp->csr6 |= 0x00000200; - - /* set bit 24 for nway negotiation mode ... - * see Data Port Selection comment at top of file - * and "Stop" - reset both Transmit (bit 13) and Receive (bit 1) - */ - tp->csr6 |= 0x01000000; - iowrite32(csr14, ioaddr + CSR14); - iowrite32(tp->csr6, ioaddr + CSR6); - udelay(100); - - /* all set up so now force the negotiation to begin */ - - /* read in current values and mask off all but the - * Autonegotiation bits 14:12. Writing a 001 to those bits - * should start the autonegotiation - */ - csr12 = (ioread32(ioaddr + CSR12) & 0xffff8fff); - csr12 |= 0x1000; - iowrite32(csr12, ioaddr + CSR12); -} - - - -void pnic2_lnk_change(struct net_device *dev, int csr5) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - int csr14; - - /* read the staus register to find out what is up */ - int csr12 = ioread32(ioaddr + CSR12); - - if (tulip_debug > 1) - dev_info(&dev->dev, - "PNIC2 link status interrupt %08x, CSR5 %x, %08x\n", - csr12, csr5, ioread32(ioaddr + CSR14)); - - /* If NWay finished and we have a negotiated partner capability. - * check bits 14:12 for bit pattern 101 - all is good - */ - if (tp->nway && !tp->nwayset) { - - /* we did an auto negotiation */ - - if ((csr12 & 0x7000) == 0x5000) { - - /* negotiation ended successfully */ - - /* get the link partners reply and mask out all but - * bits 24-21 which show the partners capabilities - * and match those to what we advertised - * - * then begin to interpret the results of the negotiation. - * Always go in this order : (we are ignoring T4 for now) - * 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD - */ - - int negotiated = ((csr12 >> 16) & 0x01E0) & tp->sym_advertise; - 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 { - if (tulip_debug > 1) - dev_info(&dev->dev, - "funny autonegotiate result csr12 %08x advertising %04x\n", - csr12, tp->sym_advertise); - tp->nwayset = 0; - /* so check if 100baseTx link state is okay */ - if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) - dev->if_port = 3; - } - - /* now record the duplex that was negotiated */ - tp->full_duplex = 0; - if ((dev->if_port == 4) || (dev->if_port == 5)) - tp->full_duplex = 1; - - if (tulip_debug > 1) { - if (tp->nwayset) - dev_info(&dev->dev, - "Switching to %s based on link negotiation %04x & %04x = %04x\n", - medianame[dev->if_port], - tp->sym_advertise, tp->lpar, - negotiated); - } - - /* remember to turn off bit 7 - autonegotiate - * enable so we can properly end nway mode and - * set duplex (ie. use csr6<9> again) - */ - csr14 = (ioread32(ioaddr + CSR14) & 0xffffff7f); - iowrite32(csr14,ioaddr + CSR14); - - - /* now set the data port and operating mode - * (see the Data Port Selection comments at - * the top of the file - */ - - /* get current csr6 and mask off bits not to touch */ - /* see comment at top of file */ - - tp->csr6 = (ioread32(ioaddr + CSR6) & 0xfe3bd1fd); - - /* so if using if_port 3 or 5 then select the 100baseT - * port else select the 10baseT port. - * See the Data Port Selection table at the top - * of the file which was taken from the PNIC_II.PDF - * datasheet - */ - if (dev->if_port & 1) tp->csr6 |= 0x01840000; - else tp->csr6 |= 0x00400000; - - /* now set the full duplex bit appropriately */ - if (tp->full_duplex) tp->csr6 |= 0x00000200; - - iowrite32(1, ioaddr + CSR13); - - if (tulip_debug > 2) - netdev_dbg(dev, "Setting CSR6 %08x/%x CSR12 %08x\n", - tp->csr6, - ioread32(ioaddr + CSR6), - ioread32(ioaddr + CSR12)); - - /* now the following actually writes out the - * new csr6 values - */ - tulip_start_rxtx(tp); - - return; - - } else { - dev_info(&dev->dev, - "Autonegotiation failed, using %s, link beat status %04x\n", - medianame[dev->if_port], csr12); - - /* remember to turn off bit 7 - autonegotiate - * enable so we don't forget - */ - csr14 = (ioread32(ioaddr + CSR14) & 0xffffff7f); - iowrite32(csr14,ioaddr + CSR14); - - /* what should we do when autonegotiate fails? - * should we try again or default to baseline - * case. I just don't know. - * - * for now default to some baseline case - */ - - dev->if_port = 0; - tp->nway = 0; - tp->nwayset = 1; - - /* set to 10baseTx-HD - see Data Port Selection - * comment given at the top of the file - */ - tp->csr6 = (ioread32(ioaddr + CSR6) & 0xfe3bd1fd); - tp->csr6 |= 0x00400000; - - tulip_restart_rxtx(tp); - - return; - - } - } - - 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. */ - - if (tulip_debug > 2) - netdev_dbg(dev, "Ugh! Link blew?\n"); - - del_timer_sync(&tp->timer); - pnic2_start_nway(dev); - tp->timer.expires = RUN_AT(3*HZ); - add_timer(&tp->timer); - - return; - } - - - if (dev->if_port == 3 || dev->if_port == 5) { - - /* we are at 100mb and a potential link change occurred */ - - if (tulip_debug > 1) - dev_info(&dev->dev, "PNIC2 %s link beat %s\n", - medianame[dev->if_port], - (csr12 & 2) ? "failed" : "good"); - - /* check 100 link beat */ - - tp->nway = 0; - tp->nwayset = 1; - - /* if failed then try doing an nway to get in sync */ - if ((csr12 & 2) && ! tp->medialock) { - del_timer_sync(&tp->timer); - pnic2_start_nway(dev); - tp->timer.expires = RUN_AT(3*HZ); - add_timer(&tp->timer); - } - - return; - } - - if (dev->if_port == 0 || dev->if_port == 4) { - - /* we are at 10mb and a potential link change occurred */ - - if (tulip_debug > 1) - dev_info(&dev->dev, "PNIC2 %s link beat %s\n", - medianame[dev->if_port], - (csr12 & 4) ? "failed" : "good"); - - - tp->nway = 0; - tp->nwayset = 1; - - /* if failed, try doing an nway to get in sync */ - if ((csr12 & 4) && ! tp->medialock) { - del_timer_sync(&tp->timer); - pnic2_start_nway(dev); - tp->timer.expires = RUN_AT(3*HZ); - add_timer(&tp->timer); - } - - return; - } - - - if (tulip_debug > 1) - dev_info(&dev->dev, "PNIC2 Link Change Default?\n"); - - /* if all else fails default to trying 10baseT-HD */ - dev->if_port = 0; - - /* make sure autonegotiate enable is off */ - csr14 = (ioread32(ioaddr + CSR14) & 0xffffff7f); - iowrite32(csr14,ioaddr + CSR14); - - /* set to 10baseTx-HD - see Data Port Selection - * comment given at the top of the file - */ - tp->csr6 = (ioread32(ioaddr + CSR6) & 0xfe3bd1fd); - tp->csr6 |= 0x00400000; - - tulip_restart_rxtx(tp); -} - |