sys/src/9/pc/ether589.c

   1 /*
   2  * 3C589 and 3C562.
   3  * To do:
   4  *      check xcvr10Base2 still works (is GlobalReset necessary?).
   5  */
   6 #include "u.h"
   7 #include "../port/lib.h"
   8 #include "mem.h"
   9 #include "dat.h"
  10 #include "fns.h"
  11 #include "io.h"
  12 #include "../port/error.h"
  13 #include "../port/netif.h"
  14 #include "../port/etherif.h"
  15
  16 enum {                                          /* all windows */
  17         CommandR                = 0x000E,
  18         IntStatusR              = 0x000E,
  19 };
  20
  21 enum {                                          /* Commands */
  22         GlobalReset             = 0x0000,
  23         SelectRegisterWindow    = 0x0001,
  24         RxReset                 = 0x0005,
  25         TxReset                 = 0x000B,
  26         AcknowledgeInterrupt    = 0x000D,
  27 };
  28
  29 enum {                                          /* IntStatus bits */
  30         commandInProgress       = 0x1000,
  31 };
  32
  33 #define COMMAND(port, cmd, a)   outs((port)+CommandR, ((cmd)<<11)|(a))
  34 #define STATUS(port)            ins((port)+IntStatusR)
  35
  36 enum {                                          /* Window 0 - setup */
  37         Wsetup                  = 0x0000,
  38                                                 /* registers */
  39         ManufacturerID          = 0x0000,       /* 3C5[08]*, 3C59[27] */
  40         ProductID               = 0x0002,       /* 3C5[08]*, 3C59[27] */
  41         ConfigControl           = 0x0004,       /* 3C5[08]*, 3C59[27] */
  42         AddressConfig           = 0x0006,       /* 3C5[08]*, 3C59[27] */
  43         ResourceConfig          = 0x0008,       /* 3C5[08]*, 3C59[27] */
  44         EepromCommand           = 0x000A,
  45         EepromData              = 0x000C,
  46                                                 /* AddressConfig Bits */
  47         autoSelect9             = 0x0080,
  48         xcvrMask9               = 0xC000,
  49                                                 /* ConfigControl bits */
  50         Ena                     = 0x0001,
  51         base10TAvailable9       = 0x0200,
  52         coaxAvailable9          = 0x1000,
  53         auiAvailable9           = 0x2000,
  54                                                 /* EepromCommand bits */
  55         EepromReadRegister      = 0x0080,
  56         EepromBusy              = 0x8000,
  57 };
  58
  59 enum {                                          /* Window 1 - operating set */
  60         Wop                     = 0x0001,
  61 };
  62
  63 enum {                                          /* Window 3 - FIFO management */
  64         Wfifo                   = 0x0003,
  65                                                 /* registers */
  66         InternalConfig          = 0x0000,       /* 3C509B, 3C589, 3C59[0257] */
  67                                                 /* InternalConfig bits */
  68         xcvr10BaseT             = 0x00000000,
  69         xcvr10Base2             = 0x00300000,
  70 };
  71
  72 enum {                                          /* Window 4 - diagnostic */
  73         Wdiagnostic             = 0x0004,
  74                                                 /* registers */
  75         MediaStatus             = 0x000A,
  76                                                 /* MediaStatus bits */
  77         linkBeatDetect          = 0x0800,
  78 };
  79
  80 extern int etherelnk3reset(Ether*);
  81
  82 static char *tcmpcmcia[] = {
  83         "3C589",                        /* 3COM 589[ABCD] */
  84         "3C562",                        /* 3COM 562 */
  85         "589E",                         /* 3COM Megahertz 589E */
  86         nil,
  87 };
  88
  89 static int
  90 configASIC(Ether* ether, int port, int xcvr)
  91 {
  92         int x;
  93
  94         /* set Window 0 configuration registers */
  95         COMMAND(port, SelectRegisterWindow, Wsetup);
  96         outs(port+ConfigControl, Ena);
  97
  98         /* IRQ must be 3 on 3C589/3C562 */
  99         outs(port + ResourceConfig, 0x3F00);
 100
 101         x = ins(port+AddressConfig) & ~xcvrMask9;
 102         x |= (xcvr>>20)<<14;
 103         outs(port+AddressConfig, x);
 104
 105         COMMAND(port, TxReset, 0);
 106         while(STATUS(port) & commandInProgress)
 107                 ;
 108         COMMAND(port, RxReset, 0);
 109         while(STATUS(port) & commandInProgress)
 110                 ;
 111
 112         return etherelnk3reset(ether);
 113 }
 114
 115 static int
 116 reset(Ether* ether)
 117 {
 118         int i, t, slot;
 119         char *type;
 120         int port;
 121         enum { WantAny, Want10BT, Want10B2 };
 122         int want;
 123         uchar ea[6];
 124         char *p;
 125
 126         if(ether->irq == 0)
 127                 ether->irq = 10;
 128         if(ether->port == 0)
 129                 ether->port = 0x240;
 130         port = ether->port;
 131
 132         if(ioalloc(port, 0x10, 0, "3C589") < 0)
 133                 return -1;
 134
 135         type = nil;
 136         slot = -1;
 137         for(i = 0; tcmpcmcia[i] != nil; i++){
 138                 type = tcmpcmcia[i];
 139                 if((slot = pcmspecial(type, ether)) >= 0)
 140                         break;
 141         }
 142         ether->type = type;     /* must be set before calling configASIC */
 143         if(slot < 0){
 144                 iofree(port);
 145                 return -1;
 146         }
 147
 148         /*
 149          * Read Ethernet address from card memory
 150          * on 3C562, but only if the user has not
 151          * overridden it.
 152          */
 153         memset(ea, 0, sizeof ea);
 154         if(memcmp(ea, ether->ea, 6) == 0 && strcmp(type, "3C562") == 0) {
 155                 if(pcmcistuple(slot, 0x88, -1, ea, 6) == 6) {
 156                         for(i = 0; i < 6; i += 2){
 157                                 t = ea[i];
 158                                 ea[i] = ea[i+1];
 159                                 ea[i+1] = t;
 160                         }
 161                         memmove(ether->ea, ea, 6);
 162                 }
 163         }
 164         /*
 165          * Allow user to specify desired media in plan9.ini
 166          */
 167         want = WantAny;
 168         for(i = 0; i < ether->nopt; i++){
 169                 if(cistrncmp(ether->opt[i], "media=", 6) != 0)
 170                         continue;
 171                 p = ether->opt[i]+6;
 172                 if(cistrcmp(p, "10base2") == 0)
 173                         want = Want10B2;
 174                 else if(cistrcmp(p, "10baseT") == 0)
 175                         want = Want10BT;
 176         }
 177
 178         /* try configuring as a 10BaseT */
 179         if(want==WantAny || want==Want10BT){
 180                 if(configASIC(ether, port, xcvr10BaseT) < 0){
 181                         pcmspecialclose(slot);
 182                         iofree(port);
 183                         return -1;
 184                 }
 185                 delay(100);
 186                 COMMAND(port, SelectRegisterWindow, Wdiagnostic);
 187                 if((ins(port+MediaStatus)&linkBeatDetect) || want==Want10BT){
 188                         COMMAND(port, SelectRegisterWindow, Wop);
 189                         print("#l%d: xcvr10BaseT %s\n", ether->ctlrno, type);
 190                         return 0;
 191                 }
 192         }
 193
 194         /* try configuring as a 10base2 */
 195         if(want==WantAny || want==Want10B2){
 196                 COMMAND(port, GlobalReset, 0);
 197                 if(configASIC(ether, port, xcvr10Base2) < 0){
 198                         pcmspecialclose(slot);
 199                         iofree(port);
 200                         return -1;
 201                 }
 202                 print("#l%d: xcvr10Base2 %s\n", ether->ctlrno, type);
 203                 return 0;
 204         }
 205         return -1;              /* not reached */
 206 }
 207
 208 void
 209 ether589link(void)
 210 {
 211         addethercard("3C589", reset);
 212         addethercard("3C562", reset);
 213         addethercard("589E", reset);
 214 }