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-user.{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 <linux/pci.h>
  18 #include "tulip.h"
  19
  20
  21 void tulip_timer(unsigned long data)
  22 {
  23         struct net_device *dev = (struct net_device *)data;
  24         struct tulip_private *tp = netdev_priv(dev);
  25         void __iomem *ioaddr = tp->base_addr;
  26         u32 csr12 = ioread32(ioaddr + CSR12);
  27         int next_tick = 2*HZ;
  28
  29         if (tulip_debug > 2) {
  30                 printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
  31                            " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
  32                            dev->name, medianame[dev->if_port], ioread32(ioaddr + CSR5),
  33                            ioread32(ioaddr + CSR6), csr12, ioread32(ioaddr + CSR13),
  34                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
  35         }
  36         switch (tp->chip_id) {
  37         case DC21140:
  38         case DC21142:
  39         case MX98713:
  40         case COMPEX9881:
  41         case DM910X:
  42         case ULI526X:
  43         default: {
  44                 struct medialeaf *mleaf;
  45                 unsigned char *p;
  46                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
  47                         /* Not much that can be done.
  48                            Assume this a generic MII or SYM transceiver. */
  49                         next_tick = 60*HZ;
  50                         if (tulip_debug > 2)
  51                                 printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
  52                                            "CSR12 0x%2.2x.\n",
  53                                            dev->name, ioread32(ioaddr + CSR6), csr12 & 0xff);
  54                         break;
  55                 }
  56                 mleaf = &tp->mtable->mleaf[tp->cur_index];
  57                 p = mleaf->leafdata;
  58                 switch (mleaf->type) {
  59                 case 0: case 4: {
  60                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
  61                         int offset = mleaf->type == 4 ? 5 : 2;
  62                         s8 bitnum = p[offset];
  63                         if (p[offset+1] & 0x80) {
  64                                 if (tulip_debug > 1)
  65                                         printk(KERN_DEBUG"%s: Transceiver monitor tick "
  66                                                    "CSR12=%#2.2x, no media sense.\n",
  67                                                    dev->name, csr12);
  68                                 if (mleaf->type == 4) {
  69                                         if (mleaf->media == 3 && (csr12 & 0x02))
  70                                                 goto select_next_media;
  71                                 }
  72                                 break;
  73                         }
  74                         if (tulip_debug > 2)
  75                                 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
  76                                            " bit %d is %d, expecting %d.\n",
  77                                            dev->name, csr12, (bitnum >> 1) & 7,
  78                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
  79                                            (bitnum >= 0));
  80                         /* Check that the specified bit has the proper value. */
  81                         if ((bitnum < 0) !=
  82                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
  83                                 if (tulip_debug > 2)
  84                                         printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
  85                                                medianame[mleaf->media & MEDIA_MASK]);
  86                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
  87                                         goto actually_mii;
  88                                 netif_carrier_on(dev);
  89                                 break;
  90                         }
  91                         netif_carrier_off(dev);
  92                         if (tp->medialock)
  93                                 break;
  94           select_next_media:
  95                         if (--tp->cur_index < 0) {
  96                                 /* We start again, but should instead look for default. */
  97                                 tp->cur_index = tp->mtable->leafcount - 1;
  98                         }
  99                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
 100                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
 101                                 goto select_next_media; /* Skip FD entries. */
 102                         if (tulip_debug > 1)
 103                                 printk(KERN_DEBUG "%s: No link beat on media %s,"
 104                                        " trying transceiver type %s.\n",
 105                                        dev->name, medianame[mleaf->media & MEDIA_MASK],
 106                                        medianame[tp->mtable->mleaf[tp->cur_index].media]);
 107                         tulip_select_media(dev, 0);
 108                         /* Restart the transmit process. */
 109                         tulip_restart_rxtx(tp);
 110                         next_tick = (24*HZ)/10;
 111                         break;
 112                 }
 113                 case 1:  case 3:                /* 21140, 21142 MII */
 114                 actually_mii:
 115                         if (tulip_check_duplex(dev) < 0) {
 116                                 netif_carrier_off(dev);
 117                                 next_tick = 3*HZ;
 118                         } else {
 119                                 netif_carrier_on(dev);
 120                                 next_tick = 60*HZ;
 121                         }
 122                         break;
 123                 case 2:                                 /* 21142 serial block has no link beat. */
 124                 default:
 125                         break;
 126                 }
 127         }
 128         break;
 129         }
 130         /* mod_timer synchronizes us with potential add_timer calls
 131          * from interrupts.
 132          */
 133         mod_timer(&tp->timer, RUN_AT(next_tick));
 134 }
 135
 136
 137 void mxic_timer(unsigned long data)
 138 {
 139         struct net_device *dev = (struct net_device *)data;
 140         struct tulip_private *tp = netdev_priv(dev);
 141         void __iomem *ioaddr = tp->base_addr;
 142         int next_tick = 60*HZ;
 143
 144         if (tulip_debug > 3) {
 145                 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
 146                            ioread32(ioaddr + CSR12));
 147         }
 148         if (next_tick) {
 149                 mod_timer(&tp->timer, RUN_AT(next_tick));
 150         }
 151 }
 152
 153
 154 void comet_timer(unsigned long data)
 155 {
 156         struct net_device *dev = (struct net_device *)data;
 157         struct tulip_private *tp = netdev_priv(dev);
 158         int next_tick = 60*HZ;
 159
 160         if (tulip_debug > 1)
 161                 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
 162                            "%4.4x.\n",
 163                            dev->name,
 164                            tulip_mdio_read(dev, tp->phys[0], 1),
 165                            tulip_mdio_read(dev, tp->phys[0], 5));
 166         /* mod_timer synchronizes us with potential add_timer calls
 167          * from interrupts.
 168          */
 169         if (tulip_check_duplex(dev) < 0)
 170                 { netif_carrier_off(dev); }
 171         else
 172                 { netif_carrier_on(dev); }
 173         mod_timer(&tp->timer, RUN_AT(next_tick));
 174 }
 175