drivers/net/ethernet/dec/tulip/timer.c

   1 /*
   2         drivers/net/ethernet/dec/tulip/timer.c
   3
   4         Copyright 2000,2001  The Linux Kernel Team
   5         Written/copyright 1994-2001 by Donald Becker.
   6
   7         This software may be used and distributed according to the terms
   8         of the GNU General Public License, incorporated herein by reference.
   9
  10         Please submit bugs to http://bugzilla.kernel.org/ .
  11 */
  12
  13
  14 #include "tulip.h"
  15
  16
  17 void tulip_media_task(struct work_struct *work)
  18 {
  19         struct tulip_private *tp =
  20                 container_of(work, struct tulip_private, media_work);
  21         struct net_device *dev = tp->dev;
  22         void __iomem *ioaddr = tp->base_addr;
  23         u32 csr12 = ioread32(ioaddr + CSR12);
  24         int next_tick = 2*HZ;
  25         unsigned long flags;
  26
  27         if (tulip_debug > 2) {
  28                 netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
  29                            medianame[dev->if_port],
  30                            ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
  31                            csr12, ioread32(ioaddr + CSR13),
  32                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
  33         }
  34         switch (tp->chip_id) {
  35         case DC21140:
  36         case DC21142:
  37         case MX98713:
  38         case COMPEX9881:
  39         case DM910X:
  40         default: {
  41                 struct medialeaf *mleaf;
  42                 unsigned char *p;
  43                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
  44                         /* Not much that can be done.
  45                            Assume this a generic MII or SYM transceiver. */
  46                         next_tick = 60*HZ;
  47                         if (tulip_debug > 2)
  48                                 netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n",
  49                                            ioread32(ioaddr + CSR6),
  50                                            csr12 & 0xff);
  51                         break;
  52                 }
  53                 mleaf = &tp->mtable->mleaf[tp->cur_index];
  54                 p = mleaf->leafdata;
  55                 switch (mleaf->type) {
  56                 case 0: case 4: {
  57                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
  58                         int offset = mleaf->type == 4 ? 5 : 2;
  59                         s8 bitnum = p[offset];
  60                         if (p[offset+1] & 0x80) {
  61                                 if (tulip_debug > 1)
  62                                         netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n",
  63                                                    csr12);
  64                                 if (mleaf->type == 4) {
  65                                         if (mleaf->media == 3 && (csr12 & 0x02))
  66                                                 goto select_next_media;
  67                                 }
  68                                 break;
  69                         }
  70                         if (tulip_debug > 2)
  71                                 netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n",
  72                                            csr12, (bitnum >> 1) & 7,
  73                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
  74                                            (bitnum >= 0));
  75                         /* Check that the specified bit has the proper value. */
  76                         if ((bitnum < 0) !=
  77                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
  78                                 if (tulip_debug > 2)
  79                                         netdev_dbg(dev, "Link beat detected for %s\n",
  80                                                    medianame[mleaf->media & MEDIA_MASK]);
  81                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
  82                                         goto actually_mii;
  83                                 netif_carrier_on(dev);
  84                                 break;
  85                         }
  86                         netif_carrier_off(dev);
  87                         if (tp->medialock)
  88                                 break;
  89           select_next_media:
  90                         if (--tp->cur_index < 0) {
  91                                 /* We start again, but should instead look for default. */
  92                                 tp->cur_index = tp->mtable->leafcount - 1;
  93                         }
  94                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
  95                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
  96                                 goto select_next_media; /* Skip FD entries. */
  97                         if (tulip_debug > 1)
  98                                 netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n",
  99                                            medianame[mleaf->media & MEDIA_MASK],
 100                                            medianame[tp->mtable->mleaf[tp->cur_index].media]);
 101                         tulip_select_media(dev, 0);
 102                         /* Restart the transmit process. */
 103                         tulip_restart_rxtx(tp);
 104                         next_tick = (24*HZ)/10;
 105                         break;
 106                 }
 107                 case 1:  case 3:                /* 21140, 21142 MII */
 108                 actually_mii:
 109                         if (tulip_check_duplex(dev) < 0) {
 110                                 netif_carrier_off(dev);
 111                                 next_tick = 3*HZ;
 112                         } else {
 113                                 netif_carrier_on(dev);
 114                                 next_tick = 60*HZ;
 115                         }
 116                         break;
 117                 case 2:                                 /* 21142 serial block has no link beat. */
 118                 default:
 119                         break;
 120                 }
 121         }
 122         break;
 123         }
 124
 125
 126         spin_lock_irqsave(&tp->lock, flags);
 127         if (tp->timeout_recovery) {
 128                 tulip_tx_timeout_complete(tp, ioaddr);
 129                 tp->timeout_recovery = 0;
 130         }
 131         spin_unlock_irqrestore(&tp->lock, flags);
 132
 133         /* mod_timer synchronizes us with potential add_timer calls
 134          * from interrupts.
 135          */
 136         mod_timer(&tp->timer, RUN_AT(next_tick));
 137 }
 138
 139
 140 void mxic_timer(struct timer_list *t)
 141 {
 142         struct tulip_private *tp = from_timer(tp, t, timer);
 143         struct net_device *dev = tp->dev;
 144         void __iomem *ioaddr = tp->base_addr;
 145         int next_tick = 60*HZ;
 146
 147         if (tulip_debug > 3) {
 148                 dev_info(&dev->dev, "MXIC negotiation status %08x\n",
 149                          ioread32(ioaddr + CSR12));
 150         }
 151         if (next_tick) {
 152                 mod_timer(&tp->timer, RUN_AT(next_tick));
 153         }
 154 }
 155
 156
 157 void comet_timer(struct timer_list *t)
 158 {
 159         struct tulip_private *tp = from_timer(tp, t, timer);
 160         struct net_device *dev = tp->dev;
 161         int next_tick = 2*HZ;
 162
 163         if (tulip_debug > 1)
 164                 netdev_dbg(dev, "Comet link status %04x partner capability %04x\n",
 165                            tulip_mdio_read(dev, tp->phys[0], 1),
 166                            tulip_mdio_read(dev, tp->phys[0], 5));
 167         /* mod_timer synchronizes us with potential add_timer calls
 168          * from interrupts.
 169          */
 170         if (tulip_check_duplex(dev) < 0)
 171                 { netif_carrier_off(dev); }
 172         else
 173                 { netif_carrier_on(dev); }
 174         mod_timer(&tp->timer, RUN_AT(next_tick));
 175 }
 176