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