drivers/net/tulip/21142.c

   1 /*
   2         drivers/net/tulip/21142.c
   3
   4         Maintained by Jeff Garzik <jgarzik@mandrakesoft.com>
   5         Copyright 2000  The Linux Kernel Team
   6         Written/copyright 1994-1999 by Donald Becker.
   7
   8         This software may be used and distributed according to the terms
   9         of the GNU Public License, incorporated herein by reference.
  10
  11         Please refer to Documentation/networking/tulip.txt for more
  12         information on this driver.
  13
  14 */
  15
  16 #include "tulip.h"
  17 #include <asm/io.h>
  18
  19
  20 static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
  21 u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
  22 static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
  23
  24
  25
  26 /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
  27    of available transceivers.  */
  28 void t21142_timer(unsigned long data)
  29 {
  30         struct net_device *dev = (struct net_device *)data;
  31         struct tulip_private *tp = (struct tulip_private *)dev->priv;
  32         long ioaddr = dev->base_addr;
  33         int csr12 = inl(ioaddr + CSR12);
  34         int next_tick = 60*HZ;
  35         int new_csr6 = 0;
  36
  37         if (tulip_debug > 2)
  38                 printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
  39                            dev->name, csr12, medianame[dev->if_port]);
  40         if (tulip_media_cap[dev->if_port] & MediaIsMII) {
  41                 tulip_check_duplex(dev);
  42                 next_tick = 60*HZ;
  43         } else if (tp->nwayset) {
  44                 /* Don't screw up a negotiated session! */
  45                 if (tulip_debug > 1)
  46                         printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
  47                                    dev->name, medianame[dev->if_port], csr12);
  48         } else if (tp->medialock) {
  49                         ;
  50         } else if (dev->if_port == 3) {
  51                 if (csr12 & 2) {        /* No 100mbps link beat, revert to 10mbps. */
  52                         if (tulip_debug > 1)
  53                                 printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
  54                                            "trying NWay.\n", dev->name, csr12);
  55                         t21142_start_nway(dev);
  56                         next_tick = 3*HZ;
  57                 }
  58         } else if ((csr12 & 0x7000) != 0x5000) {
  59                 /* Negotiation failed.  Search media types. */
  60                 if (tulip_debug > 1)
  61                         printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
  62                                    dev->name, csr12);
  63                 if (!(csr12 & 4)) {             /* 10mbps link beat good. */
  64                         new_csr6 = 0x82420000;
  65                         dev->if_port = 0;
  66                         outl(0, ioaddr + CSR13);
  67                         outl(0x0003FFFF, ioaddr + CSR14);
  68                         outw(t21142_csr15[dev->if_port], ioaddr + CSR15);
  69                         outl(t21142_csr13[dev->if_port], ioaddr + CSR13);
  70                 } else {
  71                         /* Select 100mbps port to check for link beat. */
  72                         new_csr6 = 0x83860000;
  73                         dev->if_port = 3;
  74                         outl(0, ioaddr + CSR13);
  75                         outl(0x0003FF7F, ioaddr + CSR14);
  76                         outw(8, ioaddr + CSR15);
  77                         outl(1, ioaddr + CSR13);
  78                 }
  79                 if (tulip_debug > 1)
  80                         printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
  81                                    dev->name, medianame[dev->if_port]);
  82                 if (new_csr6 != (tp->csr6 & ~0x00D5)) {
  83                         tp->csr6 &= 0x00D5;
  84                         tp->csr6 |= new_csr6;
  85                         outl(0x0301, ioaddr + CSR12);
  86                         tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
  87                         tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
  88                 }
  89                 next_tick = 3*HZ;
  90         }
  91
  92         tp->timer.expires = RUN_AT(next_tick);
  93         add_timer(&tp->timer);
  94 }
  95
  96
  97 void t21142_start_nway(struct net_device *dev)
  98 {
  99         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 100         long ioaddr = dev->base_addr;
 101         int csr14 = ((tp->to_advertise & 0x0780) << 9)  |
 102                 ((tp->to_advertise&0x0020)<<1) | 0xffbf;
 103
 104         dev->if_port = 0;
 105         tp->nway = tp->mediasense = 1;
 106         tp->nwayset = tp->lpar = 0;
 107         if (tulip_debug > 1)
 108                 printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, %8.8x.\n",
 109                            dev->name, csr14);
 110         outl(0x0001, ioaddr + CSR13);
 111         outl(csr14, ioaddr + CSR14);
 112         tp->csr6 = 0x82420000 | (tp->to_advertise & 0x0040 ? 0x0200 : 0);
 113         tulip_outl_CSR6(tp, tp->csr6);
 114         if (tp->mtable  &&  tp->mtable->csr15dir) {
 115                 outl(tp->mtable->csr15dir, ioaddr + CSR15);
 116                 outl(tp->mtable->csr15val, ioaddr + CSR15);
 117         } else
 118                 outw(0x0008, ioaddr + CSR15);
 119         outl(0x1301, ioaddr + CSR12);           /* Trigger NWAY. */
 120 }
 121
 122
 123 void t21142_lnk_change(struct net_device *dev, int csr5)
 124 {
 125         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 126         long ioaddr = dev->base_addr;
 127         int csr12 = inl(ioaddr + CSR12);
 128
 129         if (tulip_debug > 1)
 130                 printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
 131                            "%8.8x.\n", dev->name, csr12, csr5, inl(ioaddr + CSR14));
 132
 133         /* If NWay finished and we have a negotiated partner capability. */
 134         if (tp->nway  &&  !tp->nwayset  &&  (csr12 & 0x7000) == 0x5000) {
 135                 int setup_done = 0;
 136                 int negotiated = tp->to_advertise & (csr12 >> 16);
 137                 tp->lpar = csr12 >> 16;
 138                 tp->nwayset = 1;
 139                 if (negotiated & 0x0100)                dev->if_port = 5;
 140                 else if (negotiated & 0x0080)   dev->if_port = 3;
 141                 else if (negotiated & 0x0040)   dev->if_port = 4;
 142                 else if (negotiated & 0x0020)   dev->if_port = 0;
 143                 else {
 144                         tp->nwayset = 0;
 145                         if ((csr12 & 2) == 0  &&  (tp->to_advertise & 0x0180))
 146                                 dev->if_port = 3;
 147                 }
 148                 tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
 149
 150                 if (tulip_debug > 1) {
 151                         if (tp->nwayset)
 152                                 printk(KERN_INFO "%s: Switching to %s based on link "
 153                                            "negotiation %4.4x & %4.4x = %4.4x.\n",
 154                                            dev->name, medianame[dev->if_port], tp->to_advertise,
 155                                            tp->lpar, negotiated);
 156                         else
 157                                 printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
 158                                            " link beat status %4.4x.\n",
 159                                            dev->name, medianame[dev->if_port], csr12);
 160                 }
 161
 162                 if (tp->mtable) {
 163                         int i;
 164                         for (i = 0; i < tp->mtable->leafcount; i++)
 165                                 if (tp->mtable->mleaf[i].media == dev->if_port) {
 166                                         tp->cur_index = i;
 167                                         tulip_select_media(dev, 0);
 168                                         setup_done = 1;
 169                                         break;
 170                                 }
 171                 }
 172                 if ( ! setup_done) {
 173                         tp->csr6 = dev->if_port & 1 ? 0x83860000 : 0x82420000;
 174                         if (tp->full_duplex)
 175                                 tp->csr6 |= 0x0200;
 176                         outl(1, ioaddr + CSR13);
 177                 }
 178 #if 0                                                   /* Restart shouldn't be needed. */
 179                 tulip_outl_CSR6(tp, tp->csr6 | 0x0000);
 180                 if (tulip_debug > 2)
 181                         printk(KERN_DEBUG "%s:  Restarting Tx and Rx, CSR5 is %8.8x.\n",
 182                                    dev->name, inl(ioaddr + CSR5));
 183 #endif
 184                 tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
 185                 if (tulip_debug > 2)
 186                         printk(KERN_DEBUG "%s:  Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
 187                                    dev->name, tp->csr6, inl(ioaddr + CSR6),
 188                                    inl(ioaddr + CSR12));
 189         } else if ((tp->nwayset  &&  (csr5 & 0x08000000)
 190                                 && (dev->if_port == 3  ||  dev->if_port == 5)
 191                                 && (csr12 & 2) == 2) ||
 192                            (tp->nway && (csr5 & (TPLnkFail)))) {
 193                 /* Link blew? Maybe restart NWay. */
 194                 del_timer(&tp->timer);
 195                 t21142_start_nway(dev);
 196                 tp->timer.expires = RUN_AT(3*HZ);
 197                 add_timer(&tp->timer);
 198         } else if (dev->if_port == 3  ||  dev->if_port == 5) {
 199                 if (tulip_debug > 1)
 200                         printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
 201                                    dev->name, medianame[dev->if_port],
 202                                    (csr12 & 2) ? "failed" : "good");
 203                 if ((csr12 & 2)  &&  ! tp->medialock) {
 204                         del_timer(&tp->timer);
 205                         t21142_start_nway(dev);
 206                         tp->timer.expires = RUN_AT(3*HZ);
 207                         add_timer(&tp->timer);
 208                 }
 209         } else if (dev->if_port == 0  ||  dev->if_port == 4) {
 210                 if ((csr12 & 4) == 0)
 211                         printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
 212                                    dev->name);
 213         } else if (!(csr12 & 4)) {              /* 10mbps link beat good. */
 214                 if (tulip_debug)
 215                         printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
 216                                    dev->name);
 217                 dev->if_port = 0;
 218         } else if (tp->nwayset) {
 219                 if (tulip_debug)
 220                         printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
 221                                    dev->name, medianame[dev->if_port], tp->csr6);
 222         } else {                /* 100mbps link beat good. */
 223                 if (tulip_debug)
 224                         printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
 225                                    dev->name);
 226                 dev->if_port = 3;
 227                 tp->csr6 = 0x83860000;
 228                 outl(0x0003FF7F, ioaddr + CSR14);
 229                 outl(0x0301, ioaddr + CSR12);
 230                 tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
 231                 tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
 232         }
 233 }
 234
 235