aseg/counter.c

   1 #include <io.h>
   2 #include <smram.h>
   3 #include <video_defines.h>
   4 #include <minilib.h>
   5
   6 char thestr[512];
   7
   8 #include "vga-overlay.h"
   9
  10 unsigned int counter = 0;
  11 unsigned long pcisave;
  12 unsigned char vgasave;
  13
  14 void pci_dump() {
  15         char s[40];
  16         unsigned long cts;
  17         static int curdev = 0;  /* 0 if kbd, 1 if mouse */
  18
  19         cts = inl(0x84C);
  20
  21         outl(0x848, 0x0);
  22         outl(0x840, 0x0);
  23         switch(cts&0xF0000)
  24         {
  25         case 0x20000:
  26         {
  27                 unsigned char b;
  28                 b = inb(cts & 0xFFFF);
  29                 dologf("READ: %08x (%02x)", cts, b);
  30                 if ((cts & 0xFFFF) == 0x64)
  31                         curdev = (b & 0x20) ? 1 : 0;
  32                 if ((curdev == 0) && ((cts & 0xFFFF) == 0x60) && (b == 0x01))
  33                         outb(0xCF9, 0x4);
  34                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  35                 break;
  36         }
  37         case 0x30000:
  38         {
  39                 unsigned char b;
  40
  41                 strcpy(s, "WRITxxxxxxxxxxxxxxxx");
  42                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  43                 tohex(s+4, cts);
  44                 tohex(s+12, b);
  45                 dolog(s);
  46                 outb(cts & 0xFFFF, b);
  47                 break;
  48         }
  49         default:
  50                 dolog("Unhandled PCI cycle");
  51         }
  52
  53         outl(0x848, 0x1000);
  54         outl(0x840, 0x0100);
  55 }
  56
  57 void __start (void)
  58 {
  59         static int first = 1;
  60
  61         pcisave = inl(0xCF8);
  62         vgasave = inb(0x3D4);
  63
  64         if (first)
  65         {
  66                 first = 0;
  67                 dolog("NetWatch running...");
  68         }
  69
  70         counter++;
  71         outb(0x80, (counter & 0xFF));
  72
  73         strcpy(thestr, "15-412! xxxxxxxx xxxxxxxx");
  74         tohex(thestr + 8, inl(0x0834));
  75         tohex(thestr + 17, counter);
  76         strblit(thestr, 0, 0);
  77
  78         if (inl(0x834) & 0x20)
  79                 dolog("Warning: unhandled APM access");
  80         if (inl(0x834) & 0x1000)
  81         {
  82                 if (inl(0x844) & 0x1000)        /* devact_sts */
  83                 {
  84                         pci_dump();
  85                         outl(0x844, 0x1000);    /* ack it */
  86                 }
  87         }
  88         if (inl(0x834) & 0x4000)
  89                 dolog("Long periodic timer");
  90         if (inl(0x840) & 0x1000)
  91         {
  92                 pci_dump();
  93                 outl(0x840, 0x1100);
  94                 outl(0x840, 0x0100);
  95         }
  96         if (inl(0x834) & ~(0x4160))
  97                 dologf("Unknown: %08x", inl(0x834) & ~(0x140));
  98
  99         outlog();
 100
 101         outl(0xCF8, pcisave);
 102         outb(0x3D4, vgasave);
 103
 104         outl(0x848, 0x1000);
 105         outl(0x834, /*0x40*/0xFFFF);    // ack the periodic IRQ
 106         outb(0x830, (inb(0x830) | 0x2) & ~0x40);
 107         outb(0x830, inb(0x830) | 0x40);
 108
 109 }
 110