Rearrange sections a bit in aseg.lds to buy us a bit more space

[netwatch.git] / aseg / counter.c

diff --git a/aseg/counter.c b/aseg/counter.c
index edad0217a4a258607d1b55b992ba64c697a176ca..055ceec1609f8da0a4f917273bb34f2185d0a217 100644 (file)
--- a/aseg/counter.c
+++ b/aseg/counter.c
@@ -1,11 +1,177 @@
-char counter = 0;
+#include <io.h>
+#include <smram.h>
+#include <video_defines.h>
+#include <minilib.h>
+#include <smi.h>
+#include <pci-bother.h>
+#include "../net/net.h"
+#include "vga-overlay.h"
+#include "packet.h"
+#include "keyboard.h"
 
-#define outb(port, val) \
-({ asm volatile("outb %0, %%dx" : : "a" ((unsigned char)(val)) , "d" ((unsigned short)(port))); })
+unsigned int counter = 0;
+unsigned int lastctr = 0;
+unsigned long pcisave;
+unsigned char vgasave;
+static int curdev = 0; /* 0 if kbd, 1 if mouse */
 
-void __start (void)
+static void cause_kbd_irq()
 {
+       outl(0x844, 0x0);
+       outl(0x848, 0x0);
+       while (inb(0x64) & 0x1)
+               inb(0x60);
+       outb(0x60, 0xee);       /* Cause an IRQ. */
+       while (inb(0x60) != 0xEE)
+               ;
+}
+
+void pci_dump() {
+       unsigned long cts;
+               
+       cts = inl(0x84C);
+       
+       outl(0x840, 0x0);
+       outl(0x848, 0x0);
+       switch(cts&0xF0000)
+       {
+       case 0x20000:
+       {
+               unsigned char b;
+               
+               switch (cts & 0xFFFF)
+               {
+               case 0x64:
+                       /* Read the real hardware and mask in our OBF if need be. */
+                       b = inb(0x64);
+                       if (kbd_has_injected_scancode())
+                       {
+                               dologf("OS wants to know; we have data");
+                               lastctr = counter;
+                               b |= 0x01;
+                               b &= ~0x20;     /* no mouse for you! */
+                               curdev = 0;
+                       } else 
+                               curdev = (b & 0x20) ? 1 : 0;
+                       *(unsigned char*)0xAFFD0 /* EAX */ = b;
+                       break;
+               case 0x60:
+                       if (kbd_has_injected_scancode())
+                       {
+                               b = kbd_get_injected_scancode();
+                               lastctr = counter;
+                               while (inb(0x64) & 0x1)
+                                       inb(0x60);
+                       } else
+                               b = inb(0x60);
+                       if ((curdev == 0) && (b == 0x01)) {     /* Escape */
+                               outb(0xCF9, 0x4);       /* Reboot */
+                               return;
+                       }
+                       
+                       /* If there is more nus to come, generate another IRQ. */
+                       if (kbd_has_injected_scancode())
+                               cause_kbd_irq();
+                       
+                       *(unsigned char*)0xAFFD0 /* EAX */ = b;
+                       break;
+               }
+
+               *(unsigned char*)0xAFFD0 /* EAX */ = b;
+               break;
+       }
+       case 0x30000:
+       {
+               unsigned char b;
+               
+               b = *(unsigned char*)0xAFFD0 /* EAX */;
+               dologf("WRITE: %08x (%02x)", cts, b);
+               outb(cts & 0xFFFF, b);
+               break;
+       }
+       default:
+               dolog("Unhandled PCI cycle");
+       }
+       
+       outl(0x844, 0x1000);
+       outl(0x848, 0x1000);
+}
+
+void timer_handler(smi_event_t ev)
+{
+       static unsigned int ticks = 0;
+       
+       smi_disable_event(SMI_EVENT_FAST_TIMER);
+       smi_enable_event(SMI_EVENT_FAST_TIMER);
+       
+       if (kbd_has_injected_scancode() && (counter > (lastctr + 2)))
+       {
+               smi_disable_event(SMI_EVENT_DEVTRAP_KBC);
+               dolog("Kicking timer");
+               cause_kbd_irq();
+               smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
+       }
+       
+       outb(0x80, (ticks++) & 0xFF);
+       
+       outlog();
+}
+
+void kbc_handler(smi_event_t ev)
+{
+       pci_dump();
+}
+
+void gbl_rls_handler(smi_event_t ev)
+{
+       unsigned long ecx;
+       
+       ecx = *(unsigned long*)0xAFFD4;
+
+       packet_t * packet = check_packet(ecx);
+       if (!packet)
+       {
+               dologf("WARN: bad packet at %08x", ecx);
+               return;
+       }
+
+       dologf("Got packet: type %08x", packet->type);
+
+       if (packet->type == 42) {
+               dump_log((char *)packet->data);
+               *(unsigned long*)0xAFFD4 = 42;
+       } else if (packet->type == 0xAA) {
+               kbd_inject_key('A');
+       } else {
+               *(unsigned long*)0xAFFD4 = 0x2BADD00D;
+       }
+}
+
+void smi_entry(void)
+{
+       char statstr[512];
+       
+       pcisave = inl(0xCF8);
+       vgasave = inb(0x3D4);
+       pci_unbother_all();
+       
        counter++;
-       outb (0x80, counter);
+       sprintf(statstr, "15-412! %08x %08x", smi_status(), counter);
+       strblit(statstr, 0, 0);
+       
+       eth_poll();
+       
+       if (inl(0x840) & 0x1000)
+       {
+               pci_dump();
+               outl(0x840, 0x1100);
+               outl(0x840, 0x0100);
+       }
+
+       smi_poll();
+       
+       pci_bother_all();
+       outl(0xCF8, pcisave);
+       outb(0x3D4, vgasave);
 }