drivers/net/tulip/21142.c

   1 /*
   2         drivers/net/tulip/21142.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         Please submit bugs to http://bugzilla.kernel.org/ .
  13 */
  14
  15 #include <linux/delay.h>
  16 #include "tulip.h"
  17
  18
  19 static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
  20 u16 t21142_csr14[] =        { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
  21 static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
  22
  23
  24 /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
  25    of available transceivers.  */
  26 void t21142_media_task(struct work_struct *work)
  27 {
  28         struct tulip_private *tp =
  29                 container_of(work, struct tulip_private, media_work);
  30         struct net_device *dev = tp->dev;
  31         void __iomem *ioaddr = tp->base_addr;
  32         int csr12 = ioread32(ioaddr + CSR12);
  33         int next_tick = 60*HZ;
  34         int new_csr6 = 0;
  35
  36         if (tulip_debug > 2)
  37                 printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
  38                            dev->name, csr12, medianame[dev->if_port]);
  39         if (tulip_media_cap[dev->if_port] & MediaIsMII) {
  40                 if (tulip_check_duplex(dev) < 0) {
  41                         netif_carrier_off(dev);
  42                         next_tick = 3*HZ;
  43                 } else {
  44                         netif_carrier_on(dev);
  45                         next_tick = 60*HZ;
  46                 }
  47         } else if (tp->nwayset) {
  48                 /* Don't screw up a negotiated session! */
  49                 if (tulip_debug > 1)
  50                         printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
  51                                    dev->name, medianame[dev->if_port], csr12);
  52         } else if (tp->medialock) {
  53                         ;
  54         } else if (dev->if_port == 3) {
  55                 if (csr12 & 2) {        /* No 100mbps link beat, revert to 10mbps. */
  56                         if (tulip_debug > 1)
  57                                 printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
  58                                            "trying NWay.\n", dev->name, csr12);
  59                         t21142_start_nway(dev);
  60                         next_tick = 3*HZ;
  61                 }
  62         } else if ((csr12 & 0x7000) != 0x5000) {
  63                 /* Negotiation failed.  Search media types. */
  64                 if (tulip_debug > 1)
  65                         printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
  66                                    dev->name, csr12);
  67                 if (!(csr12 & 4)) {             /* 10mbps link beat good. */
  68                         new_csr6 = 0x82420000;
  69                         dev->if_port = 0;
  70                         iowrite32(0, ioaddr + CSR13);
  71                         iowrite32(0x0003FFFF, ioaddr + CSR14);
  72                         iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15);
  73                         iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13);
  74                 } else {
  75                         /* Select 100mbps port to check for link beat. */
  76                         new_csr6 = 0x83860000;
  77                         dev->if_port = 3;
  78                         iowrite32(0, ioaddr + CSR13);
  79                         iowrite32(0x0003FF7F, ioaddr + CSR14);
  80                         iowrite16(8, ioaddr + CSR15);
  81                         iowrite32(1, ioaddr + CSR13);
  82                 }
  83                 if (tulip_debug > 1)
  84                         printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
  85                                    dev->name, medianame[dev->if_port]);
  86                 if (new_csr6 != (tp->csr6 & ~0x00D5)) {
  87                         tp->csr6 &= 0x00D5;
  88                         tp->csr6 |= new_csr6;
  89                         iowrite32(0x0301, ioaddr + CSR12);
  90                         tulip_restart_rxtx(tp);
  91                 }
  92                 next_tick = 3*HZ;
  93         }
  94
  95         /* mod_timer synchronizes us with potential add_timer calls
  96          * from interrupts.
  97          */
  98         mod_timer(&tp->timer, RUN_AT(next_tick));
  99 }
 100
 101
 102 void t21142_start_nway(struct net_device *dev)
 103 {
 104         struct tulip_private *tp = netdev_priv(dev);
 105         void __iomem *ioaddr = tp->base_addr;
 106         int csr14 = ((tp->sym_advertise & 0x0780) << 9)  |
 107                 ((tp->sym_advertise & 0x0020) << 1) | 0xffbf;
 108
 109         dev->if_port = 0;
 110         tp->nway = tp->mediasense = 1;
 111         tp->nwayset = tp->lpar = 0;
 112         if (tulip_debug > 1)
 113                 printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
 114                            dev->name, csr14);
 115         iowrite32(0x0001, ioaddr + CSR13);
 116         udelay(100);
 117         iowrite32(csr14, ioaddr + CSR14);
 118         tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0);
 119         iowrite32(tp->csr6, ioaddr + CSR6);
 120         if (tp->mtable  &&  tp->mtable->csr15dir) {
 121                 iowrite32(tp->mtable->csr15dir, ioaddr + CSR15);
 122                 iowrite32(tp->mtable->csr15val, ioaddr + CSR15);
 123         } else
 124                 iowrite16(0x0008, ioaddr + CSR15);
 125         iowrite32(0x1301, ioaddr + CSR12);              /* Trigger NWAY. */
 126 }
 127
 128
 129
 130 void t21142_lnk_change(struct net_device *dev, int csr5)
 131 {
 132         struct tulip_private *tp = netdev_priv(dev);
 133         void __iomem *ioaddr = tp->base_addr;
 134         int csr12 = ioread32(ioaddr + CSR12);
 135
 136         if (tulip_debug > 1)
 137                 printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
 138                            "%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14));
 139
 140         /* If NWay finished and we have a negotiated partner capability. */
 141         if (tp->nway  &&  !tp->nwayset  &&  (csr12 & 0x7000) == 0x5000) {
 142                 int setup_done = 0;
 143                 int negotiated = tp->sym_advertise & (csr12 >> 16);
 144                 tp->lpar = csr12 >> 16;
 145                 tp->nwayset = 1;
 146                 if (negotiated & 0x0100)                dev->if_port = 5;
 147                 else if (negotiated & 0x0080)   dev->if_port = 3;
 148                 else if (negotiated & 0x0040)   dev->if_port = 4;
 149                 else if (negotiated & 0x0020)   dev->if_port = 0;
 150                 else {
 151                         tp->nwayset = 0;
 152                         if ((csr12 & 2) == 0  &&  (tp->sym_advertise & 0x0180))
 153                                 dev->if_port = 3;
 154                 }
 155                 tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
 156
 157                 if (tulip_debug > 1) {
 158                         if (tp->nwayset)
 159                                 printk(KERN_INFO "%s: Switching to %s based on link "
 160                                            "negotiation %4.4x & %4.4x = %4.4x.\n",
 161                                            dev->name, medianame[dev->if_port], tp->sym_advertise,
 162                                            tp->lpar, negotiated);
 163                         else
 164                                 printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
 165                                            " link beat status %4.4x.\n",
 166                                            dev->name, medianame[dev->if_port], csr12);
 167                 }
 168
 169                 if (tp->mtable) {
 170                         int i;
 171                         for (i = 0; i < tp->mtable->leafcount; i++)
 172                                 if (tp->mtable->mleaf[i].media == dev->if_port) {
 173                                         int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65)));
 174                                         tp->cur_index = i;
 175                                         tulip_select_media(dev, startup);
 176                                         setup_done = 1;
 177                                         break;
 178                                 }
 179                 }
 180                 if ( ! setup_done) {
 181                         tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff);
 182                         if (tp->full_duplex)
 183                                 tp->csr6 |= 0x0200;
 184                         iowrite32(1, ioaddr + CSR13);
 185                 }
 186 #if 0                                                   /* Restart shouldn't be needed. */
 187                 iowrite32(tp->csr6 | RxOn, ioaddr + CSR6);
 188                 if (tulip_debug > 2)
 189                         printk(KERN_DEBUG "%s:  Restarting Tx and Rx, CSR5 is %8.8x.\n",
 190                                    dev->name, ioread32(ioaddr + CSR5));
 191 #endif
 192                 tulip_start_rxtx(tp);
 193                 if (tulip_debug > 2)
 194                         printk(KERN_DEBUG "%s:  Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
 195                                    dev->name, tp->csr6, ioread32(ioaddr + CSR6),
 196                                    ioread32(ioaddr + CSR12));
 197         } else if ((tp->nwayset  &&  (csr5 & 0x08000000)
 198                                 && (dev->if_port == 3  ||  dev->if_port == 5)
 199                                 && (csr12 & 2) == 2) ||
 200                            (tp->nway && (csr5 & (TPLnkFail)))) {
 201                 /* Link blew? Maybe restart NWay. */
 202                 del_timer_sync(&tp->timer);
 203                 t21142_start_nway(dev);
 204                 tp->timer.expires = RUN_AT(3*HZ);
 205                 add_timer(&tp->timer);
 206         } else if (dev->if_port == 3  ||  dev->if_port == 5) {
 207                 if (tulip_debug > 1)
 208                         printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
 209                                    dev->name, medianame[dev->if_port],
 210                                    (csr12 & 2) ? "failed" : "good");
 211                 if ((csr12 & 2)  &&  ! tp->medialock) {
 212                         del_timer_sync(&tp->timer);
 213                         t21142_start_nway(dev);
 214                         tp->timer.expires = RUN_AT(3*HZ);
 215                         add_timer(&tp->timer);
 216                 } else if (dev->if_port == 5)
 217                         iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14);
 218         } else if (dev->if_port == 0  ||  dev->if_port == 4) {
 219                 if ((csr12 & 4) == 0)
 220                         printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
 221                                    dev->name);
 222         } else if (!(csr12 & 4)) {              /* 10mbps link beat good. */
 223                 if (tulip_debug)
 224                         printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
 225                                    dev->name);
 226                 dev->if_port = 0;
 227         } else if (tp->nwayset) {
 228                 if (tulip_debug)
 229                         printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
 230                                    dev->name, medianame[dev->if_port], tp->csr6);
 231         } else {                /* 100mbps link beat good. */
 232                 if (tulip_debug)
 233                         printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
 234                                    dev->name);
 235                 dev->if_port = 3;
 236                 tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff);
 237                 iowrite32(0x0003FF7F, ioaddr + CSR14);
 238                 iowrite32(0x0301, ioaddr + CSR12);
 239                 tulip_restart_rxtx(tp);
 240         }
 241 }
 242
 243