From e9147bfab40d26fb8f8c0794e9a3fdcf14ca57dd Mon Sep 17 00:00:00 2001
From: Ben Skeggs <skeggsb@gmail.com>
Date: Wed, 6 Feb 2008 00:26:49 +1100
Subject: nv40: cleanup state handling a bit

---
 src/mesa/pipe/nouveau/nouveau_stateobj.h | 139 +++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/mesa/pipe/nouveau/nouveau_stateobj.h

(limited to 'src/mesa/pipe/nouveau/nouveau_stateobj.h')

diff --git a/src/mesa/pipe/nouveau/nouveau_stateobj.h b/src/mesa/pipe/nouveau/nouveau_stateobj.h
new file mode 100644
index 0000000000..8dfc0e9e9a
--- /dev/null
+++ b/src/mesa/pipe/nouveau/nouveau_stateobj.h
@@ -0,0 +1,139 @@
+#ifndef __NOUVEAU_STATEOBJ_H__
+#define __NOUVEAU_STATEOBJ_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;
+
+	so = *pso;
+	if (so) {
+		if (--so->refcount <= 0) {
+			free(so->push);
+			free(so->reloc);
+			free(so);
+		}
+		*pso = NULL;
+	}
+
+	if (ref) {
+		ref->refcount++;
+		*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->channel, 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->channel, 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->channel, 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->channel, pb->cur++, r->bo, r->packet,
+				 (r->flags &
+				  (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) |
+				 NOUVEAU_BO_DUMMY, 0, 0);
+		nvws->push_reloc(nvws->channel, pb->cur++, r->bo, r->data,
+				 r->flags | NOUVEAU_BO_DUMMY, r->vor, r->tor);
+	}
+}
+
+#endif
-- 
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