aseg/counter.c

   1 #include <io.h>
   2 #include <smram.h>
   3 #include <video_defines.h>
   4 #include <minilib.h>
   5 #include <smi.h>
   6
   7 char thestr[512];
   8
   9 #include "vga-overlay.h"
  10
  11 unsigned int counter = 0;
  12 unsigned long pcisave;
  13 unsigned char vgasave;
  14
  15 void pci_dump() {
  16         char s[40];
  17         unsigned long cts;
  18         static int curdev = 0;  /* 0 if kbd, 1 if mouse */
  19
  20         cts = inl(0x84C);
  21
  22         outl(0x848, 0x0);
  23         outl(0x840, 0x0);
  24         switch(cts&0xF0000)
  25         {
  26         case 0x20000:
  27         {
  28                 unsigned char b;
  29                 b = inb(cts & 0xFFFF);
  30                 dologf("READ: %08x (%02x)", cts, b);
  31                 if ((cts & 0xFFFF) == 0x64)
  32                         curdev = (b & 0x20) ? 1 : 0;
  33                 if ((curdev == 0) && ((cts & 0xFFFF) == 0x60) && (b == 0x01))
  34                         outb(0xCF9, 0x4);
  35                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  36                 break;
  37         }
  38         case 0x30000:
  39         {
  40                 unsigned char b;
  41
  42                 strcpy(s, "WRITxxxxxxxxxxxxxxxx");
  43                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  44                 tohex(s+4, cts);
  45                 tohex(s+12, b);
  46                 dolog(s);
  47                 outb(cts & 0xFFFF, b);
  48                 break;
  49         }
  50         default:
  51                 dolog("Unhandled PCI cycle");
  52         }
  53
  54         outl(0x848, 0x1000);
  55         outl(0x840, 0x0100);
  56 }
  57
  58 void smi_entry(void)
  59 {
  60         pcisave = inl(0xCF8);
  61         vgasave = inb(0x3D4);
  62
  63         counter++;
  64         outb(0x80, (counter & 0xFF));
  65
  66         sprintf(thestr, "15-412! %08x %08x", smi_status(), counter);
  67         strblit(thestr, 0, 0);
  68
  69         if (inl(0x834) & 0x1000)
  70         {
  71                 if (inl(0x844) & 0x1000)        /* devact_sts */
  72                 {
  73                         pci_dump();
  74                         outl(0x844, 0x1000);    /* ack it */
  75                 }
  76         }
  77         if (inl(0x840) & 0x1000)
  78         {
  79                 pci_dump();
  80                 outl(0x840, 0x1100);
  81                 outl(0x840, 0x0100);
  82         }
  83
  84         smi_poll();
  85         outlog();
  86
  87         outl(0xCF8, pcisave);
  88         outb(0x3D4, vgasave);
  89 }
  90