sys/src/9/pc/ether8390.h

   1 /*
   2  * Ctlr for the boards using the National Semiconductor DP8390
   3  * and SMC 83C90 Network Interface Controller.
   4  * Common code is in ether8390.c.
   5  */
   6 typedef struct {
   7         Lock;
   8
   9         ulong   port;                   /* I/O address of 8390 */
  10         ulong   data;                   /* I/O data port if no shared memory */
  11
  12         uchar   width;                  /* data transfer width in bytes */
  13         uchar   ram;                    /* true if card has shared memory */
  14         uchar   dummyrr;                /* do dummy remote read */
  15
  16         uchar   nxtpkt;                 /* receive: software bndry */
  17         uchar   pstart;
  18         uchar   pstop;
  19
  20         int     txbusy;                 /* transmit */
  21         uchar   tstart;                 /* 8390 ring addresses */
  22
  23         uchar   mar[8];                 /* shadow multicast address registers */
  24         int     mref[64];               /* reference counts for multicast groups */
  25 } Dp8390;
  26
  27 #define Dp8390BufSz     256
  28
  29 extern int dp8390reset(Ether*);
  30 extern void *dp8390read(Dp8390*, void*, ulong, ulong);
  31 extern void dp8390getea(Ether*, uchar*);
  32 extern void dp8390setea(Ether*);
  33
  34 /*
  35  * x86-specific code.
  36  */
  37 #define regr(c, r)      inb((c)->port+(r))
  38 #define regw(c, r, v)   outb((c)->port+(r), (v))
  39
  40 static void
  41 rdread(Dp8390* ctlr, void* to, int len)
  42 {
  43         switch(ctlr->width){
  44         default:
  45                 panic("dp8390 rdread: width %d\n", ctlr->width);
  46                 break;
  47
  48         case 2:
  49                 inss(ctlr->data, to, len/2);
  50                 break;
  51
  52         case 1:
  53                 insb(ctlr->data, to, len);
  54                 break;
  55         }
  56 }
  57
  58 static void
  59 rdwrite(Dp8390* ctlr, void* from, int len)
  60 {
  61         switch(ctlr->width){
  62         default:
  63                 panic("dp8390 rdwrite: width %d\n", ctlr->width);
  64                 break;
  65
  66         case 2:
  67                 outss(ctlr->data, from, len/2);
  68                 break;
  69
  70         case 1:
  71                 outsb(ctlr->data, from, len);
  72                 break;
  73         }
  74 }