aseg-paging/main.c

   1 #include <io.h>
   2 #include <smram.h>
   3 #include <video_defines.h>
   4 #include <minilib.h>
   5 #include <smi.h>
   6 #include <pci-bother.h>
   7 #include <fb.h>
   8 #include "../net/net.h"
   9 #include "vga-overlay.h"
  10 #include "../aseg/packet.h"
  11 #include "../aseg/keyboard.h"
  12
  13 unsigned int lastctr = 0;
  14 extern unsigned int counter;
  15
  16 static int curdev = 0;
  17
  18 static void cause_kbd_irq()
  19 {
  20         outl(0x844, 0x0);
  21         outl(0x848, 0x0);
  22         while (inb(0x64) & 0x1)
  23                 inb(0x60);
  24         outb(0x60, 0xee);       /* Cause an IRQ. */
  25         while (inb(0x60) != 0xEE)
  26                 ;
  27 }
  28
  29 void pci_dump() {
  30         unsigned long cts;
  31
  32         cts = inl(0x84C);
  33
  34         outl(0x840, 0x0);
  35         outl(0x848, 0x0);
  36         switch(cts&0xF0000)
  37         {
  38         case 0x20000:
  39         {
  40                 unsigned char b;
  41
  42                 switch (cts & 0xFFFF)
  43                 {
  44                 case 0x64:
  45                         /* Read the real hardware and mask in our OBF if need be. */
  46                         b = inb(0x64);
  47                         if (kbd_has_injected_scancode())
  48                         {
  49                                 dologf("OS wants to know; we have data");
  50                                 lastctr = counter;
  51                                 b |= 0x01;
  52                                 b &= ~0x20;     /* no mouse for you! */
  53                                 curdev = 0;
  54                         } else
  55                                 curdev = (b & 0x20) ? 1 : 0;
  56                         *(unsigned char*)0xAFFD0 /* EAX */ = b;
  57                         break;
  58                 case 0x60:
  59                         if (kbd_has_injected_scancode())
  60                         {
  61                                 b = kbd_get_injected_scancode();
  62                                 lastctr = counter;
  63                                 while (inb(0x64) & 0x1)
  64                                         inb(0x60);
  65                         } else
  66                                 b = inb(0x60);
  67                         if ((curdev == 0) && (b == 0x01)) {     /* Escape */
  68                                 outb(0xCF9, 0x4);       /* Reboot */
  69                                 return;
  70                         }
  71
  72                         /* If there is more nus to come, generate another IRQ. */
  73                         if (kbd_has_injected_scancode())
  74                                 cause_kbd_irq();
  75
  76                         *(unsigned char*)0xAFFD0 /* EAX */ = b;
  77                         break;
  78                 }
  79
  80                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  81                 break;
  82         }
  83         case 0x30000:
  84         {
  85                 unsigned char b;
  86
  87                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  88                 dologf("WRITE: %08x (%02x)", cts, b);
  89                 outb(cts & 0xFFFF, b);
  90                 break;
  91         }
  92         default:
  93                 dolog("Unhandled PCI cycle");
  94         }
  95
  96         outl(0x840, 0x0);
  97         outl(0x844, 0x1000);
  98         outl(0x848, 0x1000);
  99 }
 100
 101 void timer_handler(smi_event_t ev)
 102 {
 103         static unsigned int ticks = 0;
 104
 105         smi_disable_event(SMI_EVENT_FAST_TIMER);
 106         smi_enable_event(SMI_EVENT_FAST_TIMER);
 107
 108         if (kbd_has_injected_scancode() && (counter > (lastctr + 2)))
 109         {
 110                 smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
 111                 dolog("Kicking timer");
 112                 cause_kbd_irq();
 113                 smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
 114         }
 115
 116         outb(0x80, (ticks++) & 0xFF);
 117
 118         if (!fb || fb->curmode.text)
 119                 outlog();
 120 }
 121
 122 void kbc_handler(smi_event_t ev)
 123 {
 124         pci_dump();
 125 }
 126
 127 void gbl_rls_handler(smi_event_t ev)
 128 {
 129         unsigned long ecx;
 130
 131         ecx = *(unsigned long*)0xAFFD4;
 132
 133         packet_t * packet = check_packet(ecx);
 134         if (!packet)
 135         {
 136                 dologf("WARN: bad packet at %08x", ecx);
 137                 return;
 138         }
 139
 140         dologf("Got packet: type %08x", packet->type);
 141
 142         if (packet->type == 42) {
 143                 dump_log((char *)packet->data);
 144                 *(unsigned long*)0xAFFD4 = 42;
 145         } else if (packet->type == 0xAA) {
 146                 kbd_inject_key('A');
 147         } else {
 148                 *(unsigned long*)0xAFFD4 = 0x2BADD00D;
 149         }
 150 }