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 "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 static int adding_locks_from_time_to_time = 0;
  21
  22 static int _inject_ready()
  23 {
  24         return _ibf_ready && !_waiting_for_data && !adding_locks_from_time_to_time;
  25 }
  26
  27 void _try_inject()
  28 {
  29         if (kbd_has_injected_scancode() && _inject_ready())
  30         {
  31                 smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
  32                 int i = 1000;
  33                 while (inb(0x64) & 0x02)        /* Busy? */
  34                         ;
  35                 outb(0x64, 0xD2);       /* "Inject, please!" */
  36                 while (inb(0x64) & 0x02)        /* Busy? */
  37                         ;
  38                 outb(0x60, kbd_get_injected_scancode());        /* data */
  39                 while ((inb(0x64) & 0x02) && i--)       /* wait for completion */
  40                         ;
  41                 outl(0x844, 0x1000);
  42                 adding_locks_from_time_to_time++;
  43                 smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
  44         } else if (kbd_has_injected_scancode())
  45                 outputf("Would like to inject, but %d %d", _ibf_ready, _waiting_for_data);
  46 }
  47
  48 void pci_dump() {
  49         unsigned long cts;
  50
  51         cts = inl(0x84C);
  52
  53         outl(0x840, 0x0);
  54         outl(0x848, 0x0);
  55         switch(cts&0xF0000)
  56         {
  57         case 0x20000:
  58         {
  59                 unsigned char b;
  60
  61                 switch (cts & 0xFFFF)
  62                 {
  63                 case 0x64:
  64                         /* Read the real hardware and mask in our OBF if need be. */
  65                         b = inb(0x64);
  66
  67                         curdev = (b & 0x20 /* KBD_STAT_MOUSE_OBF */) ? 1 : 0;
  68
  69                         if ((curdev == 0) && kbd_has_injected_scancode())
  70                                 b |= 0x1;
  71
  72                         _ibf_ready = (b & 0x2 /* IBF */) ? 0 : 1;
  73
  74                         break;
  75                 case 0x60:
  76                         if ((curdev == 0) && kbd_has_injected_scancode() && !adding_locks_from_time_to_time)
  77                                 b = kbd_get_injected_scancode();
  78                         else
  79                                 b = inb(0x60);
  80                         if (adding_locks_from_time_to_time)
  81                                 adding_locks_from_time_to_time--;
  82                         if ((curdev == 0) && (b == 0x01)) {     /* Escape */
  83                                 outb(0xCF9, 0x4);       /* Reboot */
  84                                 return;
  85                         }
  86                         break;
  87
  88                 default:
  89                         b = inb(cts & 0xFFFF);
  90                 }
  91
  92                 dologf("READ : %08x (%02x)", cts, b);
  93                 *(unsigned char*)0xAFFD0 /* EAX */ = b;
  94                 break;
  95         }
  96         case 0x30000:
  97         {
  98                 unsigned char b;
  99
 100                 b = *(unsigned char*)0xAFFD0 /* EAX */;
 101                 dologf("WRITE: %08x (%02x)", cts, b);
 102                 if ((cts & 0xFFFF) == 0x64)
 103                         switch(b)
 104                         {
 105                         case 0x60 /*KBD_CCMD_WRITE_MODE*/:
 106                         case 0xD2 /*KBD_CCMD_WRITE_OBUF*/:
 107                         case 0xD3 /*KBD_CCMD_WRITE_AUX_OBUF*/:
 108                         case 0xD4 /*KBD_CCMD_WRITE_MOUSE*/:
 109                         case 0xD1 /*KBD_CCMD_WRITE_OUTPORT*/:
 110                                 _waiting_for_data = 1;  /* These all should not be interrupted. */
 111                         }
 112                 else if ((cts & 0xFFFF) == 0x60)
 113                         _waiting_for_data = 0;
 114                 outb(cts & 0xFFFF, b);
 115                 break;
 116         }
 117         default:
 118                 dolog("Unhandled PCI cycle");
 119         }
 120
 121         outl(0x840, 0x0);
 122         outl(0x844, 0x1000);
 123         outl(0x848, 0x1000);
 124 }
 125
 126 void timer_handler(smi_event_t ev)
 127 {
 128         static unsigned int ticks = 0;
 129
 130         smi_disable_event(SMI_EVENT_FAST_TIMER);
 131         smi_enable_event(SMI_EVENT_FAST_TIMER);
 132
 133         _try_inject();
 134
 135         outb(0x80, (ticks++) & 0xFF);
 136
 137         if (!fb || fb->curmode.text)
 138                 outlog();
 139 }
 140
 141 void kbc_handler(smi_event_t ev)
 142 {
 143         pci_dump();
 144 }
 145
 146 void gbl_rls_handler(smi_event_t ev)
 147 {
 148         unsigned long ecx;
 149
 150         ecx = *(unsigned long*)0xAFFD4;
 151
 152         packet_t * packet = check_packet(ecx);
 153         if (!packet)
 154         {
 155                 dologf("WARN: bad packet at %08x", ecx);
 156                 return;
 157         }
 158
 159         outputf("Got packet: type %08x", packet->type);
 160
 161         if (packet->type == 42) {
 162                 dump_log((char *)packet->data);
 163                 *(unsigned long*)0xAFFD4 = 42;
 164         } else if (packet->type == 0xAA) {
 165                 kbd_inject_keysym('A', 1);
 166                 kbd_inject_keysym('A', 0);
 167         } else {
 168                 *(unsigned long*)0xAFFD4 = 0x2BADD00D;
 169         }
 170 }