aseg/counter.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 "../net/net.h"
   8 #include "vga-overlay.h"
   9 #include "packet.h"
  10 #include "keyboard.h"
  11
  12 unsigned int counter = 0;
  13 unsigned int lastctr = 0;
  14 unsigned long pcisave;
  15 unsigned char vgasave;
  16 static int curdev = 0;  /* 0 if kbd, 1 if mouse */
  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(0x844, 0x1000);
  97         outl(0x848, 0x1000);
  98 }
  99
 100 void timer_handler(smi_event_t ev)
 101 {
 102         static unsigned int ticks = 0;
 103
 104         smi_disable_event(SMI_EVENT_FAST_TIMER);
 105         smi_enable_event(SMI_EVENT_FAST_TIMER);
 106
 107         if (kbd_has_injected_scancode() && (counter > (lastctr + 2)))
 108         {
 109                 smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
 110                 dolog("Kicking timer");
 111                 cause_kbd_irq();
 112                 smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
 113         }
 114
 115         outb(0x80, (ticks++) & 0xFF);
 116
 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         dologf("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_key('A');
 145         } else {
 146                 *(unsigned long*)0xAFFD4 = 0x2BADD00D;
 147         }
 148 }
 149
 150 void smi_entry(void)
 151 {
 152         char statstr[512];
 153
 154         pcisave = inl(0xCF8);
 155         vgasave = inb(0x3D4);
 156         pci_unbother_all();
 157
 158         counter++;
 159         sprintf(statstr, "15-412! %08x %08x", smi_status(), counter);
 160         strblit(statstr, 0, 0);
 161
 162         eth_poll();
 163
 164         if (inl(0x840) & 0x1000)
 165         {
 166                 pci_dump();
 167                 outl(0x840, 0x1100);
 168                 outl(0x840, 0x0100);
 169         }
 170
 171         smi_poll();
 172
 173         pci_bother_all();
 174         outl(0xCF8, pcisave);
 175         outb(0x3D4, vgasave);
 176 }
 177