Add PCI bus probe and enumeration routines.

[netwatch.git] / aseg / counter.c

diff --git a/aseg/counter.c b/aseg/counter.c
index edad0217a4a258607d1b55b992ba64c697a176ca..88915dcfabae8e3f00c0e2c180563576aabf9e5c 100644 (file)
--- a/aseg/counter.c
+++ b/aseg/counter.c
@@ -1,11 +1,100 @@
-char counter = 0;
+#include <io.h>
+#include <smram.h>
+#include <video_defines.h>
+#include <minilib.h>
+#include <smi.h>
+#include "vga-overlay.h"
 
-#define outb(port, val) \
-({ asm volatile("outb %0, %%dx" : : "a" ((unsigned char)(val)) , "d" ((unsigned short)(port))); })
+unsigned int counter = 0;
+unsigned long pcisave;
+unsigned char vgasave;
 
-void __start (void)
+void pci_dump() {
+       unsigned long cts;
+       static int curdev = 0;  /* 0 if kbd, 1 if mouse */
+               
+       cts = inl(0x84C);
+       
+       outl(0x848, 0x0);
+       outl(0x840, 0x0);
+       switch(cts&0xF0000)
+       {
+       case 0x20000:
+       {
+               unsigned char b;
+               b = inb(cts & 0xFFFF);
+               dologf("READ: %08x (%02x)", cts, b);
+               if ((cts & 0xFFFF) == 0x64)
+                       curdev = (b & 0x20) ? 1 : 0;
+               if ((curdev == 0) && ((cts & 0xFFFF) == 0x60) && (b == 0x01))
+                       outb(0xCF9, 0x4);
+               *(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(0x848, 0x1000);
+       outl(0x840, 0x0100);
+}
+
+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);
+       
+       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;
+       dologf("ECX was %08x", ecx);
+       *(unsigned long*)0xAFFD4 = 0x2BADD00D;
+}
+
+void smi_entry(void)
 {
+       char statstr[512];
+       
+       pcisave = inl(0xCF8);
+       vgasave = inb(0x3D4);
+       
        counter++;
-       outb (0x80, counter);
+       sprintf(statstr, "15-412! %08x %08x", smi_status(), counter);
+       strblit(statstr, 0, 0);
+       
+       if (inl(0x840) & 0x1000)
+       {
+               pci_dump();
+               outl(0x840, 0x1100);
+               outl(0x840, 0x0100);
+       }
+
+       smi_poll();
+       
+       outl(0xCF8, pcisave);
+       outb(0x3D4, vgasave);
 }