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 <output.h>
   9 #include "../net/net.h"
  10 #include "vga-overlay.h"
  11 #include "../aseg/packet.h"
  12 #include "keyboard.h"
  13
  14 unsigned int lastctr = 0;
  15 extern unsigned int counter;
  16
  17 static int _ibf_ready = 0;
  18 static int _waiting_for_data = 0;
  19 static int curdev = 0;
  20
  21 void pci_dump() {
  22         unsigned long cts;
  23
  24         cts = inl(0x84C);
  25
  26         outl(0x840, 0x0);
  27         outl(0x848, 0x0);
  28         switch(cts&0xF0000)
  29         {
  30         case 0x20000:
  31         {
  32                 unsigned char b;
  33
  34                 switch (cts & 0xFFFF)
  35                 {
  36                 case 0x64:
  37                         /* Read the real hardware and mask in our OBF if need be. */
  38                         b = inb(0x64);
  39
  40                         curdev = (b & 0x20 /* KBD_STAT_MOUSE_OBF */) ? 1 : 0;
  41                         _ibf_ready = (b & 0x2 /* IBF */) ? 0 : 1;
  42
  43                         break;
  44                 case 0x60:
  45                         b = inb(0x60);
  46                         if ((curdev == 0) && (b == 0x01)) {     /* Escape */
  47                                 outb(0xCF9, 0x4);       /* Reboot */
  48                                 return;
  49                         }
  50                         break;
  51                 }
  52
  53                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  54                 break;
  55         }
  56         case 0x30000:
  57         {
  58                 unsigned char b;
  59
  60                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  61                 dologf("WRITE: %08x (%02x)", cts, b);
  62                 if ((cts & 0xFFFF) == 0x64)
  63                         switch(b)
  64                         {
  65                         case 0x60 /*KBD_CCMD_WRITE_MODE*/:
  66                         case 0xD2 /*KBD_CCMD_WRITE_OBUF*/:
  67                         case 0xD3 /*KBD_CCMD_WRITE_AUX_OBUF*/:
  68                         case 0xD4 /*KBD_CCMD_WRITE_MOUSE*/:
  69                         case 0xD1 /*KBD_CCMD_WRITE_OUTPORT*/:
  70                                 _waiting_for_data = 1;  /* These all should not be interrupted. */
  71                         }
  72                 else if ((cts & 0xFFFF) == 0x60)
  73                         _waiting_for_data = 0;
  74                 outb(cts & 0xFFFF, b);
  75                 break;
  76         }
  77         default:
  78                 dolog("Unhandled PCI cycle");
  79         }
  80
  81         outl(0x840, 0x0);
  82         outl(0x844, 0x1000);
  83         outl(0x848, 0x1000);
  84 }
  85
  86 static int _inject_ready()
  87 {
  88         return _ibf_ready && !_waiting_for_data;
  89 }
  90
  91 void timer_handler(smi_event_t ev)
  92 {
  93         static unsigned int ticks = 0;
  94
  95         smi_disable_event(SMI_EVENT_FAST_TIMER);
  96         smi_enable_event(SMI_EVENT_FAST_TIMER);
  97
  98         if (kbd_has_injected_scancode() && _inject_ready())
  99         {
 100                 smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
 101                 while (kbd_has_injected_scancode() && !(inb(0x64) & 0x01)) {
 102                         int i = 1000;
 103                         outb(0x64, 0xD2);       /* "Inject, please!" */
 104                         while (inb(0x64) & 0x02)        /* Busy? */
 105                                 ;
 106                         outb(0x60, kbd_get_injected_scancode());        /* data */
 107                         while ((inb(0x64) & 0x02) && i--)       /* wait for completion */
 108                                 ;
 109                 }
 110                 smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
 111         } else if (kbd_has_injected_scancode())
 112                 outputf("Would like to inject, but %d %d", _ibf_ready, _waiting_for_data);
 113
 114         outb(0x80, (ticks++) & 0xFF);
 115
 116         if (!fb || fb->curmode.text)
 117                 outlog();
 118 }
 119
 120 void kbc_handler(smi_event_t ev)
 121 {
 122         pci_dump();
 123 }
 124
 125 void gbl_rls_handler(smi_event_t ev)
 126 {
 127         unsigned long ecx;
 128
 129         ecx = *(unsigned long*)0xAFFD4;
 130
 131         packet_t * packet = check_packet(ecx);
 132         if (!packet)
 133         {
 134                 dologf("WARN: bad packet at %08x", ecx);
 135                 return;
 136         }
 137
 138         outputf("Got packet: type %08x", packet->type);
 139
 140         if (packet->type == 42) {
 141                 dump_log((char *)packet->data);
 142                 *(unsigned long*)0xAFFD4 = 42;
 143         } else if (packet->type == 0xAA) {
 144                 kbd_inject_keysym('A', 1);
 145                 kbd_inject_keysym('A', 0);
 146         } else {
 147                 *(unsigned long*)0xAFFD4 = 0x2BADD00D;
 148         }
 149 }