cleanup

[netwatch.git] / aseg / counter.c

#include <io.h>

unsigned int counter = 0;
unsigned long pcisave;
unsigned char vgasave;
unsigned char thestr[512];
unsigned char logents[4][41] = {0};

unsigned char vgaread(unsigned char idx)
{
	outb(0x3D4, idx);
	inb(0x3D5);
}

void strblit(char *src, int r, int c)
{
	char *destp = (char*)(0xB8000UL | (((unsigned int)vgaread(0xC)) << 9) | (((unsigned int)vgaread(0xD)) << 1)) + r*80*2 + c*2;
	unsigned char smramc;
	
	smramc = pci_read8(0, 0, 0, 0x70);
	pci_write8(0, 0, 0, 0x70, (smramc & 0xF3) | 0x08);
	while (*src)
	{
		*(destp++) = *(src++);
		*(destp++) = 0x1F;
	}
	pci_write8(0, 0, 0, 0x70, smramc);
}

void outlog()
{
	int y, x;
	unsigned char smramc;
	unsigned char *basep = (char*)(0xB8000UL | (((unsigned int)vgaread(0xC)) << 9) | (((unsigned int)vgaread(0xD)) << 1));
	
	smramc = pci_read8(0, 0, 0, 0x70);
	pci_write8(0, 0, 0, 0x70, (smramc & 0xF3) | 0x08);
	for (y = 0; y < 4; y++)
		for (x = 40; x < 80; x++)
		{
			basep[y*80*2+x*2] = ' ';
			basep[y*80*2+x*2+1] = 0x1F;
		}
	pci_write8(0, 0, 0, 0x70, smramc);
	
	for (y = 0; y < 4; y++)
		strblit(logents[y], y, 40);
	
}

void dolog(char *s)
{
	memmove(logents[0], logents[1], sizeof(logents[0])*3);
	strcpy(logents[3], s);
}

void __start (void)
{
	unsigned char smramc;
	static int first = 1;
	
	pcisave = inl(0xCF8);
	vgasave = inb(0x3D4);
	
	if (first)
	{
		first = 0;
		dolog("NetWatch running...");
	}

	counter++;
	outb(0x80, (counter & 0xFF));
	
	strcpy(thestr, "15-412! xxxxxxxx xxxxxxxx");
	tohex(thestr + 8, inl(0x0834));
	tohex(thestr + 17, counter);
	strblit(thestr, 0, 0);
	
	if (inl(0x834) & 0x20)
		dolog("Warning: unhandled APM access");
	if (inl(0x834) & 0x4000)
		dolog("Long periodic timer");
	if (inl(0x834) & ~(0x4160))
	{
		unsigned char s[40];
		strcpy(s, "Unknown: xxxxxxxx");
		tohex(s + 9, inl(0x834) & ~(0x140));
		dolog(s);
	}
	
	outlog();
	
	outl(0xCF8, pcisave);
	outb(0x3D4, vgasave);
	
	outl(0x834, /*0x40*/0xFFFF);	// ack the periodic IRQ
	outb(0x830, (inb(0x830) | 0x2) & ~0x40);
	outb(0x830, inb(0x830) | 0x40);
	
}