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 static int _inject_ready()
  22 {
  23         return _ibf_ready && !_waiting_for_data;
  24 }
  25
  26 void _try_inject()
  27 {
  28         if (kbd_has_injected_scancode() && _inject_ready())
  29         {
  30                 smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
  31                 int i = 1000;
  32                 while (inb(0x64) & 0x02)        /* Busy? */
  33                         ;
  34                 outb(0x64, 0xD2);       /* "Inject, please!" */
  35                 while (inb(0x64) & 0x02)        /* Busy? */
  36                         ;
  37                 outb(0x60, kbd_get_injected_scancode());        /* data */
  38                 while ((inb(0x64) & 0x02) && i--)       /* wait for completion */
  39                         ;
  40                 outl(0x844, 0x1000);
  41                 smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
  42         } else if (kbd_has_injected_scancode())
  43                 outputf("Would like to inject, but %d %d", _ibf_ready, _waiting_for_data);
  44 }
  45
  46 void pci_dump() {
  47         unsigned long cts;
  48
  49         cts = inl(0x84C);
  50
  51         outl(0x840, 0x0);
  52         outl(0x848, 0x0);
  53         switch(cts&0xF0000)
  54         {
  55         case 0x20000:
  56         {
  57                 unsigned char b;
  58
  59                 switch (cts & 0xFFFF)
  60                 {
  61                 case 0x64:
  62                         /* Read the real hardware and mask in our OBF if need be. */
  63                         b = inb(0x64);
  64
  65                         curdev = (b & 0x20 /* KBD_STAT_MOUSE_OBF */) ? 1 : 0;
  66
  67                         if ((curdev == 0) && kbd_has_injected_scancode())
  68                                 b |= 0x1;
  69
  70                         _ibf_ready = (b & 0x2 /* IBF */) ? 0 : 1;
  71
  72                         break;
  73                 case 0x60:
  74                         if ((curdev == 0) && kbd_has_injected_scancode())
  75                                 b = kbd_get_injected_scancode();
  76                         else
  77                                 b = inb(0x60);
  78                         if ((curdev == 0) && (b == 0x01)) {     /* Escape */
  79                                 outb(0xCF9, 0x4);       /* Reboot */
  80                                 return;
  81                         }
  82                         break;
  83                 }
  84
  85                 dologf("READ : %08x (%02x)", cts, b);
  86                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  87                 break;
  88         }
  89         case 0x30000:
  90         {
  91                 unsigned char b;
  92
  93                 b = *(unsigned char*)0xAFFD0 /* EAX */;
  94                 dologf("WRITE: %08x (%02x)", cts, b);
  95                 if ((cts & 0xFFFF) == 0x64)
  96                         switch(b)
  97                         {
  98                         case 0x60 /*KBD_CCMD_WRITE_MODE*/:
  99                         case 0xD2 /*KBD_CCMD_WRITE_OBUF*/:
 100                         case 0xD3 /*KBD_CCMD_WRITE_AUX_OBUF*/:
 101                         case 0xD4 /*KBD_CCMD_WRITE_MOUSE*/:
 102                         case 0xD1 /*KBD_CCMD_WRITE_OUTPORT*/:
 103                                 _waiting_for_data = 1;  /* These all should not be interrupted. */
 104                         }
 105                 else if ((cts & 0xFFFF) == 0x60)
 106                         _waiting_for_data = 0;
 107                 outb(cts & 0xFFFF, b);
 108                 break;
 109         }
 110         default:
 111                 dolog("Unhandled PCI cycle");
 112         }
 113
 114         outl(0x840, 0x0);
 115         outl(0x844, 0x1000);
 116         outl(0x848, 0x1000);
 117 }
 118
 119 void timer_handler(smi_event_t ev)
 120 {
 121         static unsigned int ticks = 0;
 122
 123         smi_disable_event(SMI_EVENT_FAST_TIMER);
 124         smi_enable_event(SMI_EVENT_FAST_TIMER);
 125
 126         _try_inject();
 127
 128         outb(0x80, (ticks++) & 0xFF);
 129
 130         if (!fb || fb->curmode.text)
 131                 outlog();
 132 }
 133
 134 void kbc_handler(smi_event_t ev)
 135 {
 136         pci_dump();
 137 }
 138
 139 void gbl_rls_handler(smi_event_t ev)
 140 {
 141         unsigned long ecx;
 142
 143         ecx = *(unsigned long*)0xAFFD4;
 144
 145         packet_t * packet = check_packet(ecx);
 146         if (!packet)
 147         {
 148                 dologf("WARN: bad packet at %08x", ecx);
 149                 return;
 150         }
 151
 152         outputf("Got packet: type %08x", packet->type);
 153
 154         if (packet->type == 42) {
 155                 dump_log((char *)packet->data);
 156                 *(unsigned long*)0xAFFD4 = 42;
 157         } else if (packet->type == 0xAA) {
 158                 kbd_inject_keysym('A', 1);
 159                 kbd_inject_keysym('A', 0);
 160         } else {
 161                 *(unsigned long*)0xAFFD4 = 0x2BADD00D;
 162         }
 163 }