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
  15 #include "etherif.h"
  16
  17 enum {                                          /* all windows */
  18         CommandR                = 0x000E,
  19         IntStatusR              = 0x000E,
  20 };
  21
  22 enum {                                          /* Commands */
  23         GlobalReset             = 0x0000,
  24         SelectRegisterWindow    = 0x0001,
  25         RxReset                 = 0x0005,
  26         TxReset                 = 0x000B,
  27         AcknowledgeInterrupt    = 0x000D,
  28 };
  29
  30 enum {                                          /* IntStatus bits */
  31         commandInProgress       = 0x1000,
  32 };
  33
  34 #define COMMAND(port, cmd, a)   outs((port)+CommandR, ((cmd)<<11)|(a))
  35 #define STATUS(port)            ins((port)+IntStatusR)
  36
  37 enum {                                          /* Window 0 - setup */
  38         Wsetup                  = 0x0000,
  39                                                 /* registers */
  40         ManufacturerID          = 0x0000,       /* 3C5[08]*, 3C59[27] */
  41         ProductID               = 0x0002,       /* 3C5[08]*, 3C59[27] */
  42         ConfigControl           = 0x0004,       /* 3C5[08]*, 3C59[27] */
  43         AddressConfig           = 0x0006,       /* 3C5[08]*, 3C59[27] */
  44         ResourceConfig          = 0x0008,       /* 3C5[08]*, 3C59[27] */
  45         EepromCommand           = 0x000A,
  46         EepromData              = 0x000C,
  47                                                 /* AddressConfig Bits */
  48         autoSelect9             = 0x0080,
  49         xcvrMask9               = 0xC000,
  50                                                 /* ConfigControl bits */
  51         Ena                     = 0x0001,
  52         base10TAvailable9       = 0x0200,
  53         coaxAvailable9          = 0x1000,
  54         auiAvailable9           = 0x2000,
  55                                                 /* EepromCommand bits */
  56         EepromReadRegister      = 0x0080,
  57         EepromBusy              = 0x8000,
  58 };
  59
  60 enum {                                          /* Window 1 - operating set */
  61         Wop                     = 0x0001,
  62 };
  63
  64 enum {                                          /* Window 3 - FIFO management */
  65         Wfifo                   = 0x0003,
  66                                                 /* registers */
  67         InternalConfig          = 0x0000,       /* 3C509B, 3C589, 3C59[0257] */
  68                                                 /* InternalConfig bits */
  69         xcvr10BaseT             = 0x00000000,
  70         xcvr10Base2             = 0x00300000,
  71 };
  72
  73 enum {                                          /* Window 4 - diagnostic */
  74         Wdiagnostic             = 0x0004,
  75                                                 /* registers */
  76         MediaStatus             = 0x000A,
  77                                                 /* MediaStatus bits */
  78         linkBeatDetect          = 0x0800,
  79 };
  80
  81 extern int etherelnk3reset(Ether*);
  82
  83 static char *tcmpcmcia[] = {
  84         "3C589",                        /* 3COM 589[ABCD] */
  85         "3C562",                        /* 3COM 562 */
  86         "589E",                         /* 3COM Megahertz 589E */
  87         nil,
  88 };
  89
  90 static int
  91 configASIC(Ether* ether, int port, int xcvr)
  92 {
  93         int x;
  94
  95         /* set Window 0 configuration registers */
  96         COMMAND(port, SelectRegisterWindow, Wsetup);
  97         outs(port+ConfigControl, Ena);
  98
  99         /* IRQ must be 3 on 3C589/3C562 */
 100         outs(port + ResourceConfig, 0x3F00);
 101
 102         x = ins(port+AddressConfig) & ~xcvrMask9;
 103         x |= (xcvr>>20)<<14;
 104         outs(port+AddressConfig, x);
 105
 106         COMMAND(port, TxReset, 0);
 107         while(STATUS(port) & commandInProgress)
 108                 ;
 109         COMMAND(port, RxReset, 0);
 110         while(STATUS(port) & commandInProgress)
 111                 ;
 112
 113         return etherelnk3reset(ether);
 114 }
 115
 116 static int
 117 reset(Ether* ether)
 118 {
 119         int i, t, slot;
 120         char *type;
 121         int port;
 122         enum { WantAny, Want10BT, Want10B2 };
 123         int want;
 124         uchar ea[6];
 125         char *p;
 126
 127         if(ether->irq == 0)
 128                 ether->irq = 10;
 129         if(ether->port == 0)
 130                 ether->port = 0x240;
 131         port = ether->port;
 132
 133         if(ioalloc(port, 0x10, 0, "3C589") < 0)
 134                 return -1;
 135
 136         type = nil;
 137         slot = -1;
 138         for(i = 0; tcmpcmcia[i] != nil; i++){
 139                 type = tcmpcmcia[i];
 140                 if((slot = pcmspecial(type, ether)) >= 0)
 141                         break;
 142         }
 143         ether->type = type;     /* must be set before calling configASIC */
 144         if(slot < 0){
 145                 iofree(port);
 146                 return -1;
 147         }
 148
 149         /*
 150          * Read Ethernet address from card memory
 151          * on 3C562, but only if the user has not
 152          * overridden it.
 153          */
 154         memset(ea, 0, sizeof ea);
 155         if(memcmp(ea, ether->ea, 6) == 0 && strcmp(type, "3C562") == 0) {
 156                 if(pcmcistuple(slot, 0x88, -1, ea, 6) == 6) {
 157                         for(i = 0; i < 6; i += 2){
 158                                 t = ea[i];
 159                                 ea[i] = ea[i+1];
 160                                 ea[i+1] = t;
 161                         }
 162                         memmove(ether->ea, ea, 6);
 163                 }
 164         }
 165         /*
 166          * Allow user to specify desired media in plan9.ini
 167          */
 168         want = WantAny;
 169         for(i = 0; i < ether->nopt; i++){
 170                 if(cistrncmp(ether->opt[i], "media=", 6) != 0)
 171                         continue;
 172                 p = ether->opt[i]+6;
 173                 if(cistrcmp(p, "10base2") == 0)
 174                         want = Want10B2;
 175                 else if(cistrcmp(p, "10baseT") == 0)
 176                         want = Want10BT;
 177         }
 178
 179         /* try configuring as a 10BaseT */
 180         if(want==WantAny || want==Want10BT){
 181                 if(configASIC(ether, port, xcvr10BaseT) < 0){
 182                         pcmspecialclose(slot);
 183                         iofree(port);
 184                         return -1;
 185                 }
 186                 delay(100);
 187                 COMMAND(port, SelectRegisterWindow, Wdiagnostic);
 188                 if((ins(port+MediaStatus)&linkBeatDetect) || want==Want10BT){
 189                         COMMAND(port, SelectRegisterWindow, Wop);
 190                         print("#l%d: xcvr10BaseT %s\n", ether->ctlrno, type);
 191                         return 0;
 192                 }
 193         }
 194
 195         /* try configuring as a 10base2 */
 196         if(want==WantAny || want==Want10B2){
 197                 COMMAND(port, GlobalReset, 0);
 198                 if(configASIC(ether, port, xcvr10Base2) < 0){
 199                         pcmspecialclose(slot);
 200                         iofree(port);
 201                         return -1;
 202                 }
 203                 print("#l%d: xcvr10Base2 %s\n", ether->ctlrno, type);
 204                 return 0;
 205         }
 206         return -1;              /* not reached */
 207 }
 208
 209 void
 210 ether589link(void)
 211 {
 212         addethercard("3C589", reset);
 213         addethercard("3C562", reset);
 214         addethercard("589E", reset);
 215 }