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