drivers/net/tulip/timer.c

   1 /*
   2         drivers/net/tulip/timer.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
  19
  20 void tulip_timer(unsigned long data)
  21 {
  22         struct net_device *dev = (struct net_device *)data;
  23         struct tulip_private *tp = (struct tulip_private *)dev->priv;
  24         long ioaddr = dev->base_addr;
  25         u32 csr12 = inl(ioaddr + CSR12);
  26         int next_tick = 2*HZ;
  27
  28         if (tulip_debug > 2) {
  29                 printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
  30                            " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
  31                            dev->name, medianame[dev->if_port], inl(ioaddr + CSR5),
  32                            inl(ioaddr + CSR6), csr12, inl(ioaddr + CSR13),
  33                            inl(ioaddr + CSR14), inl(ioaddr + CSR15));
  34         }
  35         switch (tp->chip_id) {
  36         case DC21040:
  37                 if (!tp->medialock  &&  csr12 & 0x0002) { /* Network error */
  38                         printk(KERN_INFO "%s: No link beat found.\n",
  39                                    dev->name);
  40                         dev->if_port = (dev->if_port == 2 ? 0 : 2);
  41                         tulip_select_media(dev, 0);
  42                         dev->trans_start = jiffies;
  43                 }
  44                 break;
  45         case DC21041:
  46                 if (tulip_debug > 2)
  47                         printk(KERN_DEBUG "%s: 21041 media tick  CSR12 %8.8x.\n",
  48                                    dev->name, csr12);
  49                 if (tp->medialock) break;
  50                 switch (dev->if_port) {
  51                 case 0: case 3: case 4:
  52                   if (csr12 & 0x0004) { /*LnkFail */
  53                         /* 10baseT is dead.  Check for activity on alternate port. */
  54                         tp->mediasense = 1;
  55                         if (csr12 & 0x0200)
  56                                 dev->if_port = 2;
  57                         else
  58                                 dev->if_port = 1;
  59                         printk(KERN_INFO "%s: No 21041 10baseT link beat, Media switched to %s.\n",
  60                                    dev->name, medianame[dev->if_port]);
  61                         outl(0, ioaddr + CSR13); /* Reset */
  62                         outl(t21041_csr14[dev->if_port], ioaddr + CSR14);
  63                         outl(t21041_csr15[dev->if_port], ioaddr + CSR15);
  64                         outl(t21041_csr13[dev->if_port], ioaddr + CSR13);
  65                         next_tick = 10*HZ;                      /* 2.4 sec. */
  66                   } else
  67                         next_tick = 30*HZ;
  68                   break;
  69                 case 1:                                 /* 10base2 */
  70                 case 2:                                 /* AUI */
  71                         if (csr12 & 0x0100) {
  72                                 next_tick = (30*HZ);                    /* 30 sec. */
  73                                 tp->mediasense = 0;
  74                         } else if ((csr12 & 0x0004) == 0) {
  75                                 printk(KERN_INFO "%s: 21041 media switched to 10baseT.\n",
  76                                            dev->name);
  77                                 dev->if_port = 0;
  78                                 tulip_select_media(dev, 0);
  79                                 next_tick = (24*HZ)/10;                         /* 2.4 sec. */
  80                         } else if (tp->mediasense || (csr12 & 0x0002)) {
  81                                 dev->if_port = 3 - dev->if_port; /* Swap ports. */
  82                                 tulip_select_media(dev, 0);
  83                                 next_tick = 20*HZ;
  84                         } else {
  85                                 next_tick = 20*HZ;
  86                         }
  87                         break;
  88                 }
  89                 break;
  90         case DC21140:
  91         case DC21142:
  92         case MX98713:
  93         case COMPEX9881:
  94         case DM910X:
  95         default: {
  96                 struct medialeaf *mleaf;
  97                 unsigned char *p;
  98                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
  99                         /* Not much that can be done.
 100                            Assume this a generic MII or SYM transceiver. */
 101                         next_tick = 60*HZ;
 102                         if (tulip_debug > 2)
 103                                 printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
 104                                            "CSR12 0x%2.2x.\n",
 105                                            dev->name, inl(ioaddr + CSR6), csr12 & 0xff);
 106                         break;
 107                 }
 108                 mleaf = &tp->mtable->mleaf[tp->cur_index];
 109                 p = mleaf->leafdata;
 110                 switch (mleaf->type) {
 111                 case 0: case 4: {
 112                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
 113                         int offset = mleaf->type == 4 ? 5 : 2;
 114                         s8 bitnum = p[offset];
 115                         if (p[offset+1] & 0x80) {
 116                                 if (tulip_debug > 1)
 117                                         printk(KERN_DEBUG"%s: Transceiver monitor tick "
 118                                                    "CSR12=%#2.2x, no media sense.\n",
 119                                                    dev->name, csr12);
 120                                 if (mleaf->type == 4) {
 121                                         if (mleaf->media == 3 && (csr12 & 0x02))
 122                                                 goto select_next_media;
 123                                 }
 124                                 break;
 125                         }
 126                         if (tulip_debug > 2)
 127                                 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
 128                                            " bit %d is %d, expecting %d.\n",
 129                                            dev->name, csr12, (bitnum >> 1) & 7,
 130                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
 131                                            (bitnum >= 0));
 132                         /* Check that the specified bit has the proper value. */
 133                         if ((bitnum < 0) !=
 134                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
 135                                 if (tulip_debug > 2)
 136                                         printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
 137                                                medianame[mleaf->media & MEDIA_MASK]);
 138                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
 139                                         goto actually_mii;
 140                                 /* netif_carrier_on(dev); */
 141                                 break;
 142                         }
 143                         /* netif_carrier_off(dev); */
 144                         if (tp->medialock)
 145                                 break;
 146           select_next_media:
 147                         if (--tp->cur_index < 0) {
 148                                 /* We start again, but should instead look for default. */
 149                                 tp->cur_index = tp->mtable->leafcount - 1;
 150                         }
 151                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
 152                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
 153                                 goto select_next_media; /* Skip FD entries. */
 154                         if (tulip_debug > 1)
 155                                 printk(KERN_DEBUG "%s: No link beat on media %s,"
 156                                        " trying transceiver type %s.\n",
 157                                        dev->name, medianame[mleaf->media & MEDIA_MASK],
 158                                        medianame[tp->mtable->mleaf[tp->cur_index].media]);
 159                         tulip_select_media(dev, 0);
 160                         /* Restart the transmit process. */
 161                         tulip_restart_rxtx(tp);
 162                         next_tick = (24*HZ)/10;
 163                         break;
 164                 }
 165                 case 1:  case 3:                /* 21140, 21142 MII */
 166                 actually_mii:
 167                         if (tulip_check_duplex(dev) < 0)
 168                                 { /* netif_carrier_off(dev); */ }
 169                         else
 170                                 { /* netif_carrier_on(dev); */ }
 171                         next_tick = 60*HZ;
 172                         break;
 173                 case 2:                                 /* 21142 serial block has no link beat. */
 174                 default:
 175                         break;
 176                 }
 177         }
 178         break;
 179         }
 180         /* mod_timer synchronizes us with potential add_timer calls
 181          * from interrupts.
 182          */
 183         mod_timer(&tp->timer, RUN_AT(next_tick));
 184 }
 185
 186
 187 void mxic_timer(unsigned long data)
 188 {
 189         struct net_device *dev = (struct net_device *)data;
 190         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 191         long ioaddr = dev->base_addr;
 192         int next_tick = 60*HZ;
 193
 194         if (tulip_debug > 3) {
 195                 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
 196                            inl(ioaddr + CSR12));
 197         }
 198         if (next_tick) {
 199                 mod_timer(&tp->timer, RUN_AT(next_tick));
 200         }
 201 }
 202
 203
 204 void comet_timer(unsigned long data)
 205 {
 206         struct net_device *dev = (struct net_device *)data;
 207         struct tulip_private *tp = (struct tulip_private *)dev->priv;
 208         long ioaddr = dev->base_addr;
 209         int next_tick = 60*HZ;
 210
 211         if (tulip_debug > 1)
 212                 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
 213                            "%4.4x.\n",
 214                            dev->name, inl(ioaddr + 0xB8), inl(ioaddr + 0xC8));
 215         /* mod_timer synchronizes us with potential add_timer calls
 216          * from interrupts.
 217          */
 218         mod_timer(&tp->timer, RUN_AT(next_tick));
 219 }
 220