#include <u.h>
#include <libc.h>

#include "reg.h"
#include "fns.h"

void
dumppgtbl(u32int *mmio)
{
	u32int pgtblctl, pgtbler;

	pgtblctl = mmio[PGTBL_CTL/4];
	pgtbler = mmio[PGTBL_ER/4];

	print("PGTBL_CTL:%08ux\n", pgtblctl);
	print("PGTBL_ER: %08ux\n", pgtbler);

	if(pgtbler & (1<<0))	print("invalid gtt entry during fetch on behalf of host\n");
	if(pgtbler & (1<<1))	print("valid pte references illegal memory\n");
	if(pgtbler & (1<<4))	print("invalid gtt entry during display a fetch\n");
	if(pgtbler & (1<<8))	print("invalid gtt entry during display b fetch\n");
	if(pgtbler & (1<<12))	print("invalid gtt entry during display c fetch\n");
	if(pgtbler & (1<<16))	print("invalid gtt entry during overlay fetch\n");
	if(pgtbler & (1<<18))	print("invalid gtt entry during cursor fetch\n");
	if(pgtbler & (1<<19))	print("CS_INVALID_GTT\n");
	if(pgtbler & (1<<20))	print("invalid gtt entry during command fetch\n");
}

void
dumpesr(u32int *mmio)
{
	u32int esr;

	esr = mmio[ESR/4];

	print("ESR:      %08ux\n", esr);

	if(esr&1)	print("instruction error\n");
	if(esr&2)	print("main memory refresh timer error\n");
	if(esr&4)	print("bcs page table error\n");
	if(esr&8)	print("command priviledge violation error\n");
	if(esr&16)	print("memory priviledge violation error\n");
	if(esr&32)	print("page table error\n");

	if(esr&0xffffffc0)	print("some other horrible error\n");
}

void
dumpshit(u32int *mmio)
{
	print("IPEIR:    %08ux\n", mmio[IPEIR/4]);
	print("IPEHR:    %08ux\n", mmio[IPEHR/4]);
	print("INSTDONE: %08ux\n", mmio[INSTDONE/4]);
	print("INSTPS:   %08ux\n", mmio[INSTPS/4]);
	print("ACTHD:    %08ux\n", mmio[ACTHD/4]);

	dumppgtbl(mmio);
	dumpesr(mmio);
	dumpring(mmio);
}

void
dumpring(u32int *mmio)
{

	u32int tail, head, start, ctl, nopid;

	tail = mmio[RING_BUFFER_TAIL/4];
	head = mmio[RING_BUFFER_HEAD/4];
	start = mmio[RING_BUFFER_START/4];
	ctl = mmio[RING_BUFFER_CTL/4];
	nopid = mmio[NOPID/4];

	print("tail 0x%08ux head 0x%08ux start 0x%08ux ctl 0x%08ux nopid 0x%08ux\n",
		tail, head, start, ctl, nopid);
}