drivers/net/tulip/timer.c

   1 /*
   2         drivers/net/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 refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
  11         for more information on this driver.
  12
  13         Please submit bugs to http://bugzilla.kernel.org/ .
  14 */
  15
  16
  17 #include "tulip.h"
  18
  19
  20 void tulip_media_task(struct work_struct *work)
  21 {
  22         struct tulip_private *tp =
  23                 container_of(work, struct tulip_private, media_work);
  24         struct net_device *dev = tp->dev;
  25         void __iomem *ioaddr = tp->base_addr;
  26         u32 csr12 = ioread32(ioaddr + CSR12);
  27         int next_tick = 2*HZ;
  28         unsigned long flags;
  29
  30         if (tulip_debug > 2) {
  31                 printk(KERN_DEBUG "%s: Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
  32                        dev->name, medianame[dev->if_port],
  33                        ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
  34                        csr12, ioread32(ioaddr + CSR13),
  35                        ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
  36         }
  37         switch (tp->chip_id) {
  38         case DC21140:
  39         case DC21142:
  40         case MX98713:
  41         case COMPEX9881:
  42         case DM910X:
  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 %08x CSR12 0x%02x\n",
  52                                        dev->name,
  53                                        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 CSR12=%#02x, 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=%#02x bit %d is %d, expecting %d\n",
  75                                        dev->name, csr12, (bitnum >> 1) & 7,
  76                                        (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
  77                                        (bitnum >= 0));
  78                         /* Check that the specified bit has the proper value. */
  79                         if ((bitnum < 0) !=
  80                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
  81                                 if (tulip_debug > 2)
  82                                         printk(KERN_DEBUG "%s: Link beat detected for %s\n",
  83                                                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, trying transceiver type %s\n",
 103                                        dev->name,
 104                                        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
 130
 131         spin_lock_irqsave(&tp->lock, flags);
 132         if (tp->timeout_recovery) {
 133                 tulip_tx_timeout_complete(tp, ioaddr);
 134                 tp->timeout_recovery = 0;
 135         }
 136         spin_unlock_irqrestore(&tp->lock, flags);
 137
 138         /* mod_timer synchronizes us with potential add_timer calls
 139          * from interrupts.
 140          */
 141         mod_timer(&tp->timer, RUN_AT(next_tick));
 142 }
 143
 144
 145 void mxic_timer(unsigned long data)
 146 {
 147         struct net_device *dev = (struct net_device *)data;
 148         struct tulip_private *tp = netdev_priv(dev);
 149         void __iomem *ioaddr = tp->base_addr;
 150         int next_tick = 60*HZ;
 151
 152         if (tulip_debug > 3) {
 153                 dev_info(&dev->dev, "MXIC negotiation status %08x\n",
 154                          ioread32(ioaddr + CSR12));
 155         }
 156         if (next_tick) {
 157                 mod_timer(&tp->timer, RUN_AT(next_tick));
 158         }
 159 }
 160
 161
 162 void comet_timer(unsigned long data)
 163 {
 164         struct net_device *dev = (struct net_device *)data;
 165         struct tulip_private *tp = netdev_priv(dev);
 166         int next_tick = 60*HZ;
 167
 168         if (tulip_debug > 1)
 169                 printk(KERN_DEBUG "%s: Comet link status %04x partner capability %04x\n",
 170                        dev->name,
 171                        tulip_mdio_read(dev, tp->phys[0], 1),
 172                        tulip_mdio_read(dev, tp->phys[0], 5));
 173         /* mod_timer synchronizes us with potential add_timer calls
 174          * from interrupts.
 175          */
 176         if (tulip_check_duplex(dev) < 0)
 177                 { netif_carrier_off(dev); }
 178         else
 179                 { netif_carrier_on(dev); }
 180         mod_timer(&tp->timer, RUN_AT(next_tick));
 181 }
 182