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   1 /*
   2         drivers/net/tulip/timer.c
   3
   4         Maintained by Valerie Henson <val_henson@linux.intel.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_media_task(struct work_struct *work)
  22 {
  23         struct tulip_private *tp =
  24                 container_of(work, struct tulip_private, media_work);
  25         struct net_device *dev = tp->dev;
  26         void __iomem *ioaddr = tp->base_addr;
  27         u32 csr12 = ioread32(ioaddr + CSR12);
  28         int next_tick = 2*HZ;
  29         unsigned long flags;
  30
  31         if (tulip_debug > 2) {
  32                 printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
  33                            " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
  34                            dev->name, medianame[dev->if_port], ioread32(ioaddr + CSR5),
  35                            ioread32(ioaddr + CSR6), csr12, ioread32(ioaddr + CSR13),
  36                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
  37         }
  38         switch (tp->chip_id) {
  39         case DC21140:
  40         case DC21142:
  41         case MX98713:
  42         case COMPEX9881:
  43         case DM910X:
  44         default: {
  45                 struct medialeaf *mleaf;
  46                 unsigned char *p;
  47                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
  48                         /* Not much that can be done.
  49                            Assume this a generic MII or SYM transceiver. */
  50                         next_tick = 60*HZ;
  51                         if (tulip_debug > 2)
  52                                 printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
  53                                            "CSR12 0x%2.2x.\n",
  54                                            dev->name, ioread32(ioaddr + CSR6), csr12 & 0xff);
  55                         break;
  56                 }
  57                 mleaf = &tp->mtable->mleaf[tp->cur_index];
  58                 p = mleaf->leafdata;
  59                 switch (mleaf->type) {
  60                 case 0: case 4: {
  61                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
  62                         int offset = mleaf->type == 4 ? 5 : 2;
  63                         s8 bitnum = p[offset];
  64                         if (p[offset+1] & 0x80) {
  65                                 if (tulip_debug > 1)
  66                                         printk(KERN_DEBUG"%s: Transceiver monitor tick "
  67                                                    "CSR12=%#2.2x, no media sense.\n",
  68                                                    dev->name, csr12);
  69                                 if (mleaf->type == 4) {
  70                                         if (mleaf->media == 3 && (csr12 & 0x02))
  71                                                 goto select_next_media;
  72                                 }
  73                                 break;
  74                         }
  75                         if (tulip_debug > 2)
  76                                 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
  77                                            " bit %d is %d, expecting %d.\n",
  78                                            dev->name, csr12, (bitnum >> 1) & 7,
  79                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
  80                                            (bitnum >= 0));
  81                         /* Check that the specified bit has the proper value. */
  82                         if ((bitnum < 0) !=
  83                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
  84                                 if (tulip_debug > 2)
  85                                         printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
  86                                                medianame[mleaf->media & MEDIA_MASK]);
  87                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
  88                                         goto actually_mii;
  89                                 netif_carrier_on(dev);
  90                                 break;
  91                         }
  92                         netif_carrier_off(dev);
  93                         if (tp->medialock)
  94                                 break;
  95           select_next_media:
  96                         if (--tp->cur_index < 0) {
  97                                 /* We start again, but should instead look for default. */
  98                                 tp->cur_index = tp->mtable->leafcount - 1;
  99                         }
 100                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
 101                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
 102                                 goto select_next_media; /* Skip FD entries. */
 103                         if (tulip_debug > 1)
 104                                 printk(KERN_DEBUG "%s: No link beat on media %s,"
 105                                        " trying transceiver type %s.\n",
 106                                        dev->name, medianame[mleaf->media & MEDIA_MASK],
 107                                        medianame[tp->mtable->mleaf[tp->cur_index].media]);
 108                         tulip_select_media(dev, 0);
 109                         /* Restart the transmit process. */
 110                         tulip_restart_rxtx(tp);
 111                         next_tick = (24*HZ)/10;
 112                         break;
 113                 }
 114                 case 1:  case 3:                /* 21140, 21142 MII */
 115                 actually_mii:
 116                         if (tulip_check_duplex(dev) < 0) {
 117                                 netif_carrier_off(dev);
 118                                 next_tick = 3*HZ;
 119                         } else {
 120                                 netif_carrier_on(dev);
 121                                 next_tick = 60*HZ;
 122                         }
 123                         break;
 124                 case 2:                                 /* 21142 serial block has no link beat. */
 125                 default:
 126                         break;
 127                 }
 128         }
 129         break;
 130         }
 131
 132
 133         spin_lock_irqsave(&tp->lock, flags);
 134         if (tp->timeout_recovery) {
 135                 tulip_tx_timeout_complete(tp, ioaddr);
 136                 tp->timeout_recovery = 0;
 137         }
 138         spin_unlock_irqrestore(&tp->lock, flags);
 139
 140         /* mod_timer synchronizes us with potential add_timer calls
 141          * from interrupts.
 142          */
 143         mod_timer(&tp->timer, RUN_AT(next_tick));
 144 }
 145
 146
 147 void mxic_timer(unsigned long data)
 148 {
 149         struct net_device *dev = (struct net_device *)data;
 150         struct tulip_private *tp = netdev_priv(dev);
 151         void __iomem *ioaddr = tp->base_addr;
 152         int next_tick = 60*HZ;
 153
 154         if (tulip_debug > 3) {
 155                 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
 156                            ioread32(ioaddr + CSR12));
 157         }
 158         if (next_tick) {
 159                 mod_timer(&tp->timer, RUN_AT(next_tick));
 160         }
 161 }
 162
 163
 164 void comet_timer(unsigned long data)
 165 {
 166         struct net_device *dev = (struct net_device *)data;
 167         struct tulip_private *tp = netdev_priv(dev);
 168         int next_tick = 60*HZ;
 169
 170         if (tulip_debug > 1)
 171                 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
 172                            "%4.4x.\n",
 173                            dev->name,
 174                            tulip_mdio_read(dev, tp->phys[0], 1),
 175                            tulip_mdio_read(dev, tp->phys[0], 5));
 176         /* mod_timer synchronizes us with potential add_timer calls
 177          * from interrupts.
 178          */
 179         if (tulip_check_duplex(dev) < 0)
 180                 { netif_carrier_off(dev); }
 181         else
 182                 { netif_carrier_on(dev); }
 183         mod_timer(&tp->timer, RUN_AT(next_tick));
 184 }
 185