#ifndef __NOUVEAU_STATEOBJ_H__
#define __NOUVEAU_STATEOBJ_H__

#include "pipe/p_util.h"

struct nouveau_stateobj_reloc {
	struct pipe_buffer *bo;

	unsigned offset;
	unsigned packet;

	unsigned data;
	unsigned flags;
	unsigned vor;
	unsigned tor;
};

struct nouveau_stateobj {
	int refcount;

	unsigned *push;
	struct nouveau_stateobj_reloc *reloc;

	unsigned *cur;
	unsigned cur_packet;
	unsigned cur_reloc;
};

static INLINE struct nouveau_stateobj *
so_new(unsigned push, unsigned reloc)
{
	struct nouveau_stateobj *so;

	so = MALLOC(sizeof(struct nouveau_stateobj));
	so->refcount = 0;
	so->push = MALLOC(sizeof(unsigned) * push);
	so->reloc = MALLOC(sizeof(struct nouveau_stateobj_reloc) * reloc);

	so->cur = so->push;
	so->cur_reloc = so->cur_packet = 0;

	return so;
}

static INLINE void
so_ref(struct nouveau_stateobj *ref, struct nouveau_stateobj **pso)
{
	struct nouveau_stateobj *so = *pso;

	if (ref) {
		ref->refcount++;
	}

	if (so && --so->refcount <= 0) {
		free(so->push);
		free(so->reloc);
		free(so);
	}

	*pso = ref;
}

static INLINE void
so_data(struct nouveau_stateobj *so, unsigned data)
{
	(*so->cur++) = (data);
	so->cur_packet += 4;
}

static INLINE void
so_method(struct nouveau_stateobj *so, struct nouveau_grobj *gr,
	  unsigned mthd, unsigned size)
{
	so->cur_packet = (gr->subc << 13) | (1 << 18) | (mthd - 4);
	so_data(so, (gr->subc << 13) | (size << 18) | mthd);
}

static INLINE void
so_reloc(struct nouveau_stateobj *so, struct pipe_buffer *bo,
	 unsigned data, unsigned flags, unsigned vor, unsigned tor)
{
	struct nouveau_stateobj_reloc *r = &so->reloc[so->cur_reloc++];
	
	r->bo = bo;
	r->offset = so->cur - so->push;
	r->packet = so->cur_packet;
	r->data = data;
	r->flags = flags;
	r->vor = vor;
	r->tor = tor;
	so_data(so, data);
}

static INLINE void
so_emit(struct nouveau_winsys *nvws, struct nouveau_stateobj *so)
{
	struct nouveau_pushbuf *pb = nvws->channel->pushbuf;
	unsigned nr, i;

	nr = so->cur - so->push;
	if (pb->remaining < nr)
		nvws->push_flush(nvws, nr);
	pb->remaining -= nr;

	memcpy(pb->cur, so->push, nr * 4);
	for (i = 0; i < so->cur_reloc; i++) {
		struct nouveau_stateobj_reloc *r = &so->reloc[i];

		nvws->push_reloc(nvws, pb->cur + r->offset, r->bo,
				 r->data, r->flags, r->vor, r->tor);
	}
	pb->cur += nr;
}

static INLINE void
so_emit_reloc_markers(struct nouveau_winsys *nvws, struct nouveau_stateobj *so)
{
	struct nouveau_pushbuf *pb = nvws->channel->pushbuf;
	unsigned i;

	i = so->cur_reloc << 1;
	if (nvws->channel->pushbuf->remaining < i)
		nvws->push_flush(nvws, i);
	nvws->channel->pushbuf->remaining -= i;

	for (i = 0; i < so->cur_reloc; i++) {
		struct nouveau_stateobj_reloc *r = &so->reloc[i];

		nvws->push_reloc(nvws, pb->cur++, r->bo, r->packet,
				 (r->flags &
				  (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) |
				 NOUVEAU_BO_DUMMY, 0, 0);
		nvws->push_reloc(nvws, pb->cur++, r->bo, r->data,
				 r->flags | NOUVEAU_BO_DUMMY, r->vor, r->tor);
	}
}

#endif