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 #include "vga-overlay.h"
   7 #include "packet.h"
   8
   9 unsigned int counter = 0;
  10 unsigned long pcisave;
  11 unsigned char vgasave;
  12
  13 void pci_dump() {
  14         unsigned long cts;
  15         static int curdev = 0;  /* 0 if kbd, 1 if mouse */
  16
  17         cts = inl(0x84C);
  18
  19         outl(0x848, 0x0);
  20         outl(0x840, 0x0);
  21         switch(cts&0xF0000)
  22         {
  23         case 0x20000:
  24         {
  25                 unsigned char b;
  26                 b = inb(cts & 0xFFFF);
  27                 dologf("READ: %08x (%02x)", cts, b);
  28                 if ((cts & 0xFFFF) == 0x64)
  29                         curdev = (b & 0x20) ? 1 : 0;
  30                 if ((curdev == 0) && ((cts & 0xFFFF) == 0x60) && (b == 0x01))
  31                         outb(0xCF9, 0x4);
  32                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  33                 break;
  34         }
  35         case 0x30000:
  36         {
  37                 unsigned char b;
  38
  39                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  40                 dologf("WRITE: %08x (%02x)", cts, b);
  41                 outb(cts & 0xFFFF, b);
  42                 break;
  43         }
  44         default:
  45                 dolog("Unhandled PCI cycle");
  46         }
  47
  48         outl(0x848, 0x1000);
  49         outl(0x840, 0x0100);
  50 }
  51
  52 void timer_handler(smi_event_t ev)
  53 {
  54         static unsigned int ticks = 0;
  55
  56         smi_disable_event(SMI_EVENT_FAST_TIMER);
  57         smi_enable_event(SMI_EVENT_FAST_TIMER);
  58
  59         outb(0x80, (ticks++) & 0xFF);
  60
  61         outlog();
  62 }
  63
  64 void kbc_handler(smi_event_t ev)
  65 {
  66         pci_dump();
  67 }
  68
  69 void gbl_rls_handler(smi_event_t ev)
  70 {
  71         unsigned long ecx;
  72
  73         ecx = *(unsigned long*)0xAFFD4;
  74
  75         packet_t * packet = check_packet(ecx);
  76         if (!packet)
  77         {
  78                 dologf("WARN: bad packet at %08x", ecx);
  79                 return;
  80         }
  81
  82         dologf("Got packet: type %08x", packet->type);
  83
  84         *(unsigned long*)0xAFFD4 = 0x2BADD00D;
  85 }
  86
  87 void smi_entry(void)
  88 {
  89         char statstr[512];
  90
  91         pcisave = inl(0xCF8);
  92         vgasave = inb(0x3D4);
  93
  94         counter++;
  95         sprintf(statstr, "15-412! %08x %08x", smi_status(), counter);
  96         strblit(statstr, 0, 0);
  97
  98         if (inl(0x840) & 0x1000)
  99         {
 100                 pci_dump();
 101                 outl(0x840, 0x1100);
 102                 outl(0x840, 0x0100);
 103         }
 104
 105         smi_poll();
 106
 107         outl(0xCF8, pcisave);
 108         outb(0x3D4, vgasave);
 109 }
 110