drivers/net/tulip/21142.c

   1 /*
   2         drivers/net/tulip/21142.c
   3
   4         Maintained by Jeff Garzik <jgarzik@pobox.com>
   5         Copyright 2000,2001  The Linux Kernel Team
   6         Written/copyright 1994-2001 by Donald Becker.
   7
   8         This software may be used and distributed according to the terms
   9         of the GNU General Public License, incorporated herein by reference.
  10
  11         Please refer to Documentation/DocBook/tulip.{pdf,ps,html}
  12         for more information on this driver, or visit the project
  13         Web page at http://sourceforge.net/projects/tulip/
  14
  15 */
  16
  17 #include "tulip.h"
  18 #include <linux/pci.h>
  19 #include <linux/delay.h>
  20
  21
  22 static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
  23 u16 t21142_csr14[] =        { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
  24 static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
  25
  26
  27 /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
  28    of available transceivers.  */
  29 void t21142_timer(unsigned long data)
  30 {
  31         struct net_device *dev = (struct net_device *)data;
  32         struct tulip_private *tp = (struct tulip_private *)dev->priv;
  33         long ioaddr = dev->base_addr;
  34         int csr12 = inl(ioaddr + CSR12);
  35         int next_tick = 60*HZ;
  36         int new_csr6 = 0;
  37
  38         if (tulip_debug > 2)
  39                 printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
  40                            dev->name, csr12, medianame[dev->if_port]);
  41         if (tulip_media_cap[dev->if_port] & MediaIsMII) {
  42                 tulip_check_duplex(dev);
  43                 next_tick = 60*HZ;
  44         } else if (tp->nwayset) {
  45                 /* Don't screw up a negotiated session! */
  46                 if (tulip_debug > 1)
  47                         printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
  48                                    dev->name, medianame[dev->if_port], csr12);
  49         } else if (tp->medialock) {
  50                         ;
  51         } else if (dev->if_port == 3) {
  52                 if (csr12 & 2) {        /* No 100mbps link beat, revert to 10mbps. */
  53                         if (tulip_debug > 1)
  54                                 printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
  55                                            "trying NWay.\n", dev->name, csr12);
  56                         t21142_start_nway(dev);
  57                         next_tick = 3*HZ;
  58                 }
  59         } else if ((csr12 & 0x7000) != 0x5000) {
  60                 /* Negotiation failed.  Search media types. */
  61                 if (tulip_debug > 1)
  62                         printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
  63                                    dev->name, csr12);
  64                 if (!(csr12 & 4)) {             /* 10mbps link beat good. */
  65                         new_csr6 = 0x82420000;
  66                         dev->if_port = 0;
  67                         outl(0, ioaddr + CSR13);
  68                         outl(0x0003FFFF, ioaddr + CSR14);
  69                         outw(t21142_csr15[dev->if_port], ioaddr + CSR15);
  70                         outl(t21142_csr13[dev->if_port], ioaddr + CSR13);
  71                 } else {
  72                         /* Select 100mbps port to check for link beat. */
  73                         new_csr6 = 0x83860000;
  74                         dev->if_port = 3;
  75                         outl(0, ioaddr + CSR13);
  76                         outl(0x0003FF7F, ioaddr + CSR14);
  77                         outw(8, ioaddr + CSR15);
  78                         outl(1, ioaddr + CSR13);
  79                 }
  80                 if (tulip_debug > 1)
  81                         printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
  82                                    dev->name, medianame[dev->if_port]);
  83                 if (new_csr6 != (tp->csr6 & ~0x00D5)) {
  84                         tp->csr6 &= 0x00D5;
  85                         tp->csr6 |= new_csr6;
  86                         outl(0x0301, ioaddr + CSR12);
  87                         tulip_restart_rxtx(tp);
  88                 }
  89                 next_tick = 3*HZ;
  90         }
  91
  92         /* mod_timer synchronizes us with potential add_timer calls
  93          * from interrupts.
  94          */
  95         mod_timer(&tp->timer, RUN_AT(next_tick));
  96 }
  97
  98
  99 void t21142_start_nway(struct net_device *dev)
 100 {
 101         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 102         long ioaddr = dev->base_addr;
 103         int csr14 = ((tp->sym_advertise & 0x0780) << 9)  |
 104                 ((tp->sym_advertise & 0x0020) << 1) | 0xffbf;
 105
 106         dev->if_port = 0;
 107         tp->nway = tp->mediasense = 1;
 108         tp->nwayset = tp->lpar = 0;
 109         if (tulip_debug > 1)
 110                 printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
 111                            dev->name, csr14);
 112         outl(0x0001, ioaddr + CSR13);
 113         udelay(100);
 114         outl(csr14, ioaddr + CSR14);
 115         tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0);
 116         outl(tp->csr6, ioaddr + CSR6);
 117         if (tp->mtable  &&  tp->mtable->csr15dir) {
 118                 outl(tp->mtable->csr15dir, ioaddr + CSR15);
 119                 outl(tp->mtable->csr15val, ioaddr + CSR15);
 120         } else
 121                 outw(0x0008, ioaddr + CSR15);
 122         outl(0x1301, ioaddr + CSR12);           /* Trigger NWAY. */
 123 }
 124
 125
 126
 127 void t21142_lnk_change(struct net_device *dev, int csr5)
 128 {
 129         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 130         long ioaddr = dev->base_addr;
 131         int csr12 = inl(ioaddr + CSR12);
 132
 133         if (tulip_debug > 1)
 134                 printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
 135                            "%8.8x.\n", dev->name, csr12, csr5, inl(ioaddr + CSR14));
 136
 137         /* If NWay finished and we have a negotiated partner capability. */
 138         if (tp->nway  &&  !tp->nwayset  &&  (csr12 & 0x7000) == 0x5000) {
 139                 int setup_done = 0;
 140                 int negotiated = tp->sym_advertise & (csr12 >> 16);
 141                 tp->lpar = csr12 >> 16;
 142                 tp->nwayset = 1;
 143                 if (negotiated & 0x0100)                dev->if_port = 5;
 144                 else if (negotiated & 0x0080)   dev->if_port = 3;
 145                 else if (negotiated & 0x0040)   dev->if_port = 4;
 146                 else if (negotiated & 0x0020)   dev->if_port = 0;
 147                 else {
 148                         tp->nwayset = 0;
 149                         if ((csr12 & 2) == 0  &&  (tp->sym_advertise & 0x0180))
 150                                 dev->if_port = 3;
 151                 }
 152                 tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
 153
 154                 if (tulip_debug > 1) {
 155                         if (tp->nwayset)
 156                                 printk(KERN_INFO "%s: Switching to %s based on link "
 157                                            "negotiation %4.4x & %4.4x = %4.4x.\n",
 158                                            dev->name, medianame[dev->if_port], tp->sym_advertise,
 159                                            tp->lpar, negotiated);
 160                         else
 161                                 printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
 162                                            " link beat status %4.4x.\n",
 163                                            dev->name, medianame[dev->if_port], csr12);
 164                 }
 165
 166                 if (tp->mtable) {
 167                         int i;
 168                         for (i = 0; i < tp->mtable->leafcount; i++)
 169                                 if (tp->mtable->mleaf[i].media == dev->if_port) {
 170                                         int startup = ! ((tp->chip_id == DC21143 && tp->revision == 65));
 171                                         tp->cur_index = i;
 172                                         tulip_select_media(dev, startup);
 173                                         setup_done = 1;
 174                                         break;
 175                                 }
 176                 }
 177                 if ( ! setup_done) {
 178                         tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff);
 179                         if (tp->full_duplex)
 180                                 tp->csr6 |= 0x0200;
 181                         outl(1, ioaddr + CSR13);
 182                 }
 183 #if 0                                                   /* Restart shouldn't be needed. */
 184                 outl(tp->csr6 | RxOn, ioaddr + CSR6);
 185                 if (tulip_debug > 2)
 186                         printk(KERN_DEBUG "%s:  Restarting Tx and Rx, CSR5 is %8.8x.\n",
 187                                    dev->name, inl(ioaddr + CSR5));
 188 #endif
 189                 tulip_start_rxtx(tp);
 190                 if (tulip_debug > 2)
 191                         printk(KERN_DEBUG "%s:  Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
 192                                    dev->name, tp->csr6, inl(ioaddr + CSR6),
 193                                    inl(ioaddr + CSR12));
 194         } else if ((tp->nwayset  &&  (csr5 & 0x08000000)
 195                                 && (dev->if_port == 3  ||  dev->if_port == 5)
 196                                 && (csr12 & 2) == 2) ||
 197                            (tp->nway && (csr5 & (TPLnkFail)))) {
 198                 /* Link blew? Maybe restart NWay. */
 199                 del_timer_sync(&tp->timer);
 200                 t21142_start_nway(dev);
 201                 tp->timer.expires = RUN_AT(3*HZ);
 202                 add_timer(&tp->timer);
 203         } else if (dev->if_port == 3  ||  dev->if_port == 5) {
 204                 if (tulip_debug > 1)
 205                         printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
 206                                    dev->name, medianame[dev->if_port],
 207                                    (csr12 & 2) ? "failed" : "good");
 208                 if ((csr12 & 2)  &&  ! tp->medialock) {
 209                         del_timer_sync(&tp->timer);
 210                         t21142_start_nway(dev);
 211                         tp->timer.expires = RUN_AT(3*HZ);
 212                         add_timer(&tp->timer);
 213                 } else if (dev->if_port == 5)
 214                         outl(inl(ioaddr + CSR14) & ~0x080, ioaddr + CSR14);
 215         } else if (dev->if_port == 0  ||  dev->if_port == 4) {
 216                 if ((csr12 & 4) == 0)
 217                         printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
 218                                    dev->name);
 219         } else if (!(csr12 & 4)) {              /* 10mbps link beat good. */
 220                 if (tulip_debug)
 221                         printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
 222                                    dev->name);
 223                 dev->if_port = 0;
 224         } else if (tp->nwayset) {
 225                 if (tulip_debug)
 226                         printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
 227                                    dev->name, medianame[dev->if_port], tp->csr6);
 228         } else {                /* 100mbps link beat good. */
 229                 if (tulip_debug)
 230                         printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
 231                                    dev->name);
 232                 dev->if_port = 3;
 233                 tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff);
 234                 outl(0x0003FF7F, ioaddr + CSR14);
 235                 outl(0x0301, ioaddr + CSR12);
 236                 tulip_restart_rxtx(tp);
 237         }
 238 }
 239
 240