aseg/counter.c

   1 #include <io.h>
   2
   3 unsigned int counter = 0;
   4 unsigned long pcisave;
   5 unsigned char vgasave;
   6 unsigned char thestr[512];
   7 unsigned char logents[4][41] = {0};
   8
   9 unsigned char vgaread(unsigned char idx)
  10 {
  11         outb(0x3D4, idx);
  12         inb(0x3D5);
  13 }
  14
  15 void strblit(char *src, int r, int c)
  16 {
  17         char *destp = (char*)(0xB8000UL | (((unsigned int)vgaread(0xC)) << 9) | (((unsigned int)vgaread(0xD)) << 1)) + r*80*2 + c*2;
  18         unsigned char smramc;
  19
  20         smramc = pci_read8(0, 0, 0, 0x70);
  21         pci_write8(0, 0, 0, 0x70, (smramc & 0xF3) | 0x08);
  22         while (*src)
  23         {
  24                 *(destp++) = *(src++);
  25                 *(destp++) = 0x1F;
  26         }
  27         pci_write8(0, 0, 0, 0x70, smramc);
  28 }
  29
  30 void outlog()
  31 {
  32         int y, x;
  33         unsigned char smramc;
  34         unsigned char *basep = (char*)(0xB8000UL | (((unsigned int)vgaread(0xC)) << 9) | (((unsigned int)vgaread(0xD)) << 1));
  35
  36         smramc = pci_read8(0, 0, 0, 0x70);
  37         pci_write8(0, 0, 0, 0x70, (smramc & 0xF3) | 0x08);
  38         for (y = 0; y < 4; y++)
  39                 for (x = 40; x < 80; x++)
  40                 {
  41                         basep[y*80*2+x*2] = ' ';
  42                         basep[y*80*2+x*2+1] = 0x1F;
  43                 }
  44         pci_write8(0, 0, 0, 0x70, smramc);
  45
  46         for (y = 0; y < 4; y++)
  47                 strblit(logents[y], y, 40);
  48
  49 }
  50
  51 void dolog(char *s)
  52 {
  53         memmove(logents[0], logents[1], sizeof(logents[0])*3);
  54         strcpy(logents[3], s);
  55 }
  56
  57 void __start (void)
  58 {
  59         unsigned char smramc;
  60         static int first = 1;
  61
  62         pcisave = inl(0xCF8);
  63         vgasave = inb(0x3D4);
  64
  65         if (first)
  66         {
  67                 first = 0;
  68                 dolog("NetWatch running...");
  69         }
  70
  71         counter++;
  72         outb(0x80, (counter & 0xFF));
  73
  74         strcpy(thestr, "15-412! xxxxxxxx xxxxxxxx");
  75         tohex(thestr + 8, inl(0x0834));
  76         tohex(thestr + 17, counter);
  77         strblit(thestr, 0, 0);
  78
  79         if (inl(0x834) & 0x20)
  80                 dolog("Warning: unhandled APM access");
  81         if (inl(0x834) & 0x1000)
  82         {
  83                 if (inl(0x844) & 0x1000)        /* devact_sts */
  84                 {
  85                         unsigned char s[40];
  86                         unsigned long cts;
  87                         static int curdev = 0;  /* 0 if kbd, 1 if mouse */
  88
  89                         cts = inl(0x84C);
  90
  91                         outl(0x848, 0x0);
  92
  93                         switch(cts&0xF0000)
  94                         {
  95                         case 0x20000:
  96                         {
  97                                 unsigned char b;
  98                                 strcpy(s, "READxxxxxxxxxxxxxxxx");
  99                                 tohex(s+4, cts);
 100                                 b = inb(cts & 0xFFFF);
 101                                 tohex(s+12, b);
 102                                 if ((cts & 0xFFFF) == 0x64)
 103                                         curdev = (b & 0x20) ? 1 : 0;
 104                                 if ((curdev == 0) && ((cts & 0xFFFF) == 0x60) && (b == 0x01))
 105                                         outb(0xCF9, 0x4);
 106                                 dolog(s);
 107                                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
 108                                 break;
 109                         }
 110                         case 0x30000:
 111                         {
 112                                 unsigned char b;
 113
 114                                 strcpy(s, "WRITxxxxxxxxxxxxxxxx");
 115                                 b = *(unsigned char*)0xAFFD0 /* EAX */;
 116                                 tohex(s+4, cts);
 117                                 tohex(s+12, b);
 118                                 dolog(s);
 119                                 outb(cts & 0xFFFF, b);
 120                                 break;
 121                         }
 122                         default:
 123                                 dolog("Unhandled PCI cycle");
 124                         }
 125                         outl(0x848, 0x1000);
 126                         outl(0x844, 0x1000);
 127                 }
 128         }
 129         if (inl(0x834) & 0x4000)
 130                 dolog("Long periodic timer");
 131         if (inl(0x834) & ~(0x4160))
 132         {
 133                 unsigned char s[40];
 134                 strcpy(s, "Unknown: xxxxxxxx");
 135                 tohex(s + 9, inl(0x834) & ~(0x140));
 136                 dolog(s);
 137         }
 138
 139         outlog();
 140
 141         outl(0xCF8, pcisave);
 142         outb(0x3D4, vgasave);
 143
 144         outl(0x848, 0x1000);
 145         outl(0x834, /*0x40*/0xFFFF);    // ack the periodic IRQ
 146         outb(0x830, (inb(0x830) | 0x2) & ~0x40);
 147         outb(0x830, inb(0x830) | 0x40);
 148
 149 }
 150