nouveau: nv30 graph function renames, removed nv20_graph.c

All nv30 functions in nv30_graph.c that can be used on nv20 are renamed
as accordingly. nv20 specific parts from nv20_graph.c are moved into
nv30_graph.c.

4 files changed, 136 insertions, 291 deletions

diff --git a/shared-core/nouveau_drv.h b/shared-core/nouveau_drv.h
index 02a4ee75..85a2dd57 100644
--- a/shared-core/nouveau_drv.h
+++ b/shared-core/nouveau_drv.h
@@ -490,22 +490,14 @@ extern void nv10_graph_destroy_context(struct nouveau_channel *);
 extern int  nv10_graph_load_context(struct nouveau_channel *);
 extern int  nv10_graph_save_context(struct nouveau_channel *);
 
-/* nv20_graph.c */
-extern void nouveau_nv20_context_switch(struct drm_device *);
-extern int  nv20_graph_init(struct drm_device *);
-extern void nv20_graph_takedown(struct drm_device *);
+/* nv30_graph.c */
 extern int  nv20_graph_create_context(struct nouveau_channel *);
 extern void nv20_graph_destroy_context(struct nouveau_channel *);
 extern int  nv20_graph_load_context(struct nouveau_channel *);
 extern int  nv20_graph_save_context(struct nouveau_channel *);
-
-/* nv30_graph.c */
+extern int  nv20_graph_init(struct drm_device *);
+extern void nv20_graph_takedown(struct drm_device *);
 extern int  nv30_graph_init(struct drm_device *);
-extern void nv30_graph_takedown(struct drm_device *);
-extern int  nv30_graph_create_context(struct nouveau_channel *);
-extern void nv30_graph_destroy_context(struct nouveau_channel *);
-extern int  nv30_graph_load_context(struct nouveau_channel *);
-extern int  nv30_graph_save_context(struct nouveau_channel *);
 
 /* nv40_graph.c */
 extern int  nv40_graph_init(struct drm_device *);
diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c
index f8dd3ad5..cba12b57 100644
--- a/shared-core/nouveau_state.c
+++ b/shared-core/nouveau_state.c
@@ -166,10 +166,10 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->fb.takedown	= nv10_fb_takedown;
 		engine->graph.init	= nv20_graph_init;
 		engine->graph.takedown	= nv20_graph_takedown;
-		engine->graph.create_context	= nv30_graph_create_context;
-		engine->graph.destroy_context	= nv30_graph_destroy_context;
-		engine->graph.load_context	= nv30_graph_load_context;
-		engine->graph.save_context	= nv30_graph_save_context;
+		engine->graph.create_context	= nv20_graph_create_context;
+		engine->graph.destroy_context	= nv20_graph_destroy_context;
+		engine->graph.load_context	= nv20_graph_load_context;
+		engine->graph.save_context	= nv20_graph_save_context;
 		engine->fifo.init	= nouveau_fifo_init;
 		engine->fifo.takedown	= nouveau_stub_takedown;
 		engine->fifo.create_context	= nv10_fifo_create_context;
@@ -192,11 +192,11 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->fb.init		= nv10_fb_init;
 		engine->fb.takedown	= nv10_fb_takedown;
 		engine->graph.init	= nv30_graph_init;
-		engine->graph.takedown	= nv30_graph_takedown;
-		engine->graph.create_context	= nv30_graph_create_context;
-		engine->graph.destroy_context	= nv30_graph_destroy_context;
-		engine->graph.load_context	= nv30_graph_load_context;
-		engine->graph.save_context	= nv30_graph_save_context;
+		engine->graph.takedown	= nv20_graph_takedown;
+		engine->graph.create_context	= nv20_graph_create_context;
+		engine->graph.destroy_context	= nv20_graph_destroy_context;
+		engine->graph.load_context	= nv20_graph_load_context;
+		engine->graph.save_context	= nv20_graph_save_context;
 		engine->fifo.init	= nouveau_fifo_init;
 		engine->fifo.takedown	= nouveau_stub_takedown;
 		engine->fifo.create_context	= nv10_fifo_create_context;
diff --git a/shared-core/nv20_graph.c b/shared-core/nv20_graph.c
deleted file mode 100644
index de97a591..00000000
--- a/shared-core/nv20_graph.c
+++ /dev/null
@@ -1,251 +0,0 @@
-/* 
- * Copyright 2007 Matthieu CASTET <castet.matthieu@free.fr>
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#include "drmP.h"
-#include "drm.h"
-#include "nouveau_drv.h"
-#include "nouveau_drm.h"
-
-#define NV20_GRCTX_SIZE (3529*4)
-
-#if 0
-int nv20_graph_create_context(struct nouveau_channel *chan) {
-	struct drm_device *dev = chan->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	unsigned int ctx_size = NV20_GRCTX_SIZE;
-	int ret;
-
-	if ((ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, ctx_size, 16,
-					  NVOBJ_FLAG_ZERO_ALLOC,
-					  &chan->ramin_grctx)))
-		return ret;
-
-	/* Initialise default context values */
-	INSTANCE_WR(chan->ramin_grctx->gpuobj, 10, chan->id<<24); /* CTX_USER */
-
-	INSTANCE_WR(dev_priv->ctx_table->gpuobj, chan->id,
-		    chan->ramin_grctx->instance >> 4);
-	return 0;
-}
-
-void nv20_graph_destroy_context(struct nouveau_channel *chan) {
-	struct drm_device *dev = chan->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-
-	nouveau_gpuobj_ref_del(dev, &chan->ramin_grctx);
-
-	INSTANCE_WR(dev_priv->ctx_table->gpuobj, chan->id, 0);
-}
-
-/* Save current context (from PGRAPH) into the channel's context
- */
-int nv20_graph_save_context(struct nouveau_channel *chan) {
-	struct drm_device *dev = chan->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	uint32_t instance;
-
-	instance = INSTANCE_RD(dev_priv->ctx_table->gpuobj, chan->id);
-	if (!instance) {
-		return -EINVAL;
-	}
-	if (instance != (chan->ramin_grctx->instance >> 4))
-		DRM_ERROR("nv20_graph_save_context : bad instance\n");
-
-	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_SIZE, instance);
-	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_POINTER, 2 /* save ctx */);
-	return 0;
-}
-
-
-/* Restore the context for a specific channel into PGRAPH
- */
-int nv20_graph_load_context(struct nouveau_channel *chan) {
-	struct drm_device *dev = chan->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	uint32_t instance;
-
-	instance = INSTANCE_RD(dev_priv->ctx_table->gpuobj, chan->id);
-	if (!instance) {
-		return -EINVAL;
-	}
-	if (instance != (chan->ramin_grctx->instance >> 4))
-		DRM_ERROR("nv20_graph_load_context_current : bad instance\n");
-
-	NV_WRITE(NV10_PGRAPH_CTX_USER, chan->id << 24);
-	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_SIZE, instance);
-	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_POINTER, 1 /* restore ctx */);
-	return 0;
-}
-
-void nouveau_nv20_context_switch(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	struct nouveau_channel *next, *last;
-	int chid;
-
-	chid = NV_READ(NV03_PFIFO_CACHE1_PUSH1)&(nouveau_fifo_number(dev)-1);
-	next = dev_priv->fifos[chid];
-
-	chid = (NV_READ(NV10_PGRAPH_CTX_USER) >> 24) & (nouveau_fifo_number(dev)-1);
-	last = dev_priv->fifos[chid];
-
-	DRM_DEBUG("NV: PGRAPH context switch interrupt channel %x -> %x\n",
-		  last->id, next->id);
-
-	NV_WRITE(NV04_PGRAPH_FIFO,0x0);
-
-	nv20_graph_save_context(last);
-	
-	nouveau_wait_for_idle(dev);
-
-	NV_WRITE(NV10_PGRAPH_CTX_CONTROL, 0x10000000);
-
-	nv20_graph_load_context(next);
-
-	nouveau_wait_for_idle(dev);
-	
-	if ((NV_READ(NV10_PGRAPH_CTX_USER) >> 24) != next->id)
-		DRM_ERROR("nouveau_nv20_context_switch : wrong channel restored %x %x!!!\n", next->id, NV_READ(NV10_PGRAPH_CTX_USER) >> 24);
-
-	NV_WRITE(NV10_PGRAPH_CTX_CONTROL, 0x10010100);
-	NV_WRITE(NV10_PGRAPH_FFINTFC_ST2, NV_READ(NV10_PGRAPH_FFINTFC_ST2)&0xCFFFFFFF);
-
-	NV_WRITE(NV04_PGRAPH_FIFO,0x1);
-}
-#endif /* 0 */
-
-static void nv20_graph_rdi(struct drm_device *dev) {
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	int i;
-
-	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x2c80000);
-	for (i = 0; i < 32; i++)
-		NV_WRITE(NV10_PGRAPH_RDI_DATA, 0);
-
-	nouveau_wait_for_idle(dev);
-}
-
-int nv20_graph_init(struct drm_device *dev) {
-	struct drm_nouveau_private *dev_priv =
-		(struct drm_nouveau_private *)dev->dev_private;
-	uint32_t tmp, vramsz;
-	int ret, i;
-
-	NV_WRITE(NV03_PMC_ENABLE, NV_READ(NV03_PMC_ENABLE) &
-			~NV_PMC_ENABLE_PGRAPH);
-	NV_WRITE(NV03_PMC_ENABLE, NV_READ(NV03_PMC_ENABLE) |
-			 NV_PMC_ENABLE_PGRAPH);
-
-	/* Create Context Pointer Table */
-	dev_priv->ctx_table_size = 32 * 4;
-	if ((ret = nouveau_gpuobj_new_ref(dev, NULL, NULL, 0,
-					  dev_priv->ctx_table_size, 16,
-					  NVOBJ_FLAG_ZERO_ALLOC,
-					  &dev_priv->ctx_table)))
-		return ret;
-
-	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_TABLE,
-		 dev_priv->ctx_table->instance >> 4);
-
-	//XXX need to be done and save/restore for each fifo ???
-	nv20_graph_rdi(dev);
-
-	NV_WRITE(NV03_PGRAPH_INTR   , 0xFFFFFFFF);
-	NV_WRITE(NV03_PGRAPH_INTR_EN, 0xFFFFFFFF);
-
-	NV_WRITE(NV04_PGRAPH_DEBUG_0, 0xFFFFFFFF);
-	NV_WRITE(NV04_PGRAPH_DEBUG_0, 0x00000000);
-	NV_WRITE(NV04_PGRAPH_DEBUG_1, 0x00118700);
-	NV_WRITE(NV04_PGRAPH_DEBUG_3, 0xF20E0435); /* 0x4 = auto ctx switch */
-	NV_WRITE(NV10_PGRAPH_DEBUG_4, 0x00000000);
-	NV_WRITE(0x40009C           , 0x00000040);
-
-	if (dev_priv->chipset >= 0x25) {
-		NV_WRITE(0x400890, 0x00080000);
-		NV_WRITE(0x400610, 0x304B1FB6);
-		NV_WRITE(0x400B80, 0x18B82880);
-		NV_WRITE(0x400B84, 0x44000000);
-		NV_WRITE(0x400098, 0x40000080);
-		NV_WRITE(0x400B88, 0x000000ff);
-	} else {
-		NV_WRITE(0x400880, 0x00080000);
-		NV_WRITE(0x400094, 0x00000005);
-		NV_WRITE(0x400B80, 0x45CAA208);
-		NV_WRITE(0x400B84, 0x24000000);
-		NV_WRITE(0x400098, 0x00000040);
-		NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00E00038);
-		NV_WRITE(NV10_PGRAPH_RDI_DATA , 0x00000030);
-		NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00E10038);
-		NV_WRITE(NV10_PGRAPH_RDI_DATA , 0x00000030);
-	}
-
-	/* copy tile info from PFB */
-	for (i=0; i<NV10_PFB_TILE__SIZE; i++) {
-		NV_WRITE(NV10_PGRAPH_TILE(i), NV_READ(NV10_PFB_TILE(i)));
-		NV_WRITE(NV10_PGRAPH_TLIMIT(i), NV_READ(NV10_PFB_TLIMIT(i)));
-		NV_WRITE(NV10_PGRAPH_TSIZE(i), NV_READ(NV10_PFB_TSIZE(i)));
-		NV_WRITE(NV10_PGRAPH_TSTATUS(i), NV_READ(NV10_PFB_TSTATUS(i)));
-	}
-
-	NV_WRITE(NV10_PGRAPH_CTX_CONTROL, 0x10010100);
-	NV_WRITE(NV10_PGRAPH_STATE      , 0xFFFFFFFF);
-	NV_WRITE(NV04_PGRAPH_FIFO       , 0x00000001);
-
-	tmp = NV_READ(NV10_PGRAPH_SURFACE) & 0x0007ff00;
-	NV_WRITE(NV10_PGRAPH_SURFACE, tmp);
-	tmp = NV_READ(NV10_PGRAPH_SURFACE) | 0x00020100;
-	NV_WRITE(NV10_PGRAPH_SURFACE, tmp);
-
-	/* begin RAM config */
-	vramsz = drm_get_resource_len(dev, 0) - 1;
-	NV_WRITE(0x4009A4, NV_READ(NV04_PFB_CFG0));
-	NV_WRITE(0x4009A8, NV_READ(NV04_PFB_CFG1));
-	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00EA0000);
-	NV_WRITE(NV10_PGRAPH_RDI_DATA , NV_READ(NV04_PFB_CFG0));
-	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00EA0004);
-	NV_WRITE(NV10_PGRAPH_RDI_DATA , NV_READ(NV04_PFB_CFG1));
-	NV_WRITE(0x400820, 0);
-	NV_WRITE(0x400824, 0);
-	NV_WRITE(0x400864, vramsz-1);
-	NV_WRITE(0x400868, vramsz-1);
-
-	/* interesting.. the below overwrites some of the tile setup above.. */
-	NV_WRITE(0x400B20, 0x00000000);
-	NV_WRITE(0x400B04, 0xFFFFFFFF);
-
-	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_XMIN, 0);
-	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_YMIN, 0);
-	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_XMAX, 0x7fff);
-	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_YMAX, 0x7fff);
-
-	return 0;
-}
-
-void nv20_graph_takedown(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-
-	nouveau_gpuobj_ref_del(dev, &dev_priv->ctx_table);
-}
-
diff --git a/shared-core/nv30_graph.c b/shared-core/nv30_graph.c
index 0ec4f096..8ca1f84c 100644
--- a/shared-core/nv30_graph.c
+++ b/shared-core/nv30_graph.c
@@ -1,7 +1,3 @@
-/*
- * Based on nv40_graph.c
- *  Someday this will all go away...
- */
 #include "drmP.h"
 #include "drm.h"
 #include "nouveau_drv.h"
@@ -25,14 +21,14 @@
 
 /*#define NV20_GRCTX_SIZE (3529*4)*/
 
-#define NV28_GRCTX_SIZE (3529*4)
+#define NV25_GRCTX_SIZE (3529*4)
 
 #define NV30_31_GRCTX_SIZE (22392)
 #define NV34_GRCTX_SIZE    (18140)
 #define NV35_36_GRCTX_SIZE (22396)
 
 
-static void nv28_graph_context_init(struct drm_device *dev,
+static void nv25_graph_context_init(struct drm_device *dev,
                                     struct nouveau_gpuobj *ctx)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -2868,9 +2864,10 @@ static void nv35_36_graph_context_init(struct drm_device *dev,
 	INSTANCE_WR(ctx, 0x385c/4, 0x40000000);
 	INSTANCE_WR(ctx, 0x3860/4, 0x3f800000);
 	INSTANCE_WR(ctx, 0x3868/4, 0xbf800000);
-	INSTANCE_WR(ctx, 0x3870/4, 0xbf800000);}
+	INSTANCE_WR(ctx, 0x3870/4, 0xbf800000);
+}
 
-int nv30_graph_create_context(struct nouveau_channel *chan)
+int nv20_graph_create_context(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -2881,8 +2878,8 @@ int nv30_graph_create_context(struct nouveau_channel *chan)
 	switch (dev_priv->chipset) {
 	case 0x25:
 	case 0x28:
-		ctx_size = NV28_GRCTX_SIZE;
-		ctx_init = nv28_graph_context_init;
+		ctx_size = NV25_GRCTX_SIZE;
+		ctx_init = nv25_graph_context_init;
 		break;
 	case 0x30:
 	case 0x31:
@@ -2925,7 +2922,7 @@ int nv30_graph_create_context(struct nouveau_channel *chan)
 	return 0;
 }
 
-void nv30_graph_destroy_context(struct nouveau_channel *chan)
+void nv20_graph_destroy_context(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -2954,7 +2951,7 @@ nouveau_graph_wait_idle(struct drm_device *dev)
 	return 0;
 }
 
-int nv30_graph_load_context(struct nouveau_channel *chan)
+int nv20_graph_load_context(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -2971,7 +2968,7 @@ int nv30_graph_load_context(struct nouveau_channel *chan)
 	return nouveau_graph_wait_idle(dev);
 }
 
-int nv30_graph_save_context(struct nouveau_channel *chan)
+int nv20_graph_save_context(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -2988,6 +2985,120 @@ int nv30_graph_save_context(struct nouveau_channel *chan)
 	return nouveau_graph_wait_idle(dev);
 }
 
+static void nv20_graph_rdi(struct drm_device *dev) {
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	int i;
+
+	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x2c80000);
+	for (i = 0; i < 32; i++)
+		NV_WRITE(NV10_PGRAPH_RDI_DATA, 0);
+
+	nouveau_wait_for_idle(dev);
+}
+
+int nv20_graph_init(struct drm_device *dev) {
+	struct drm_nouveau_private *dev_priv =
+		(struct drm_nouveau_private *)dev->dev_private;
+	uint32_t tmp, vramsz;
+	int ret, i;
+
+	NV_WRITE(NV03_PMC_ENABLE, NV_READ(NV03_PMC_ENABLE) &
+			~NV_PMC_ENABLE_PGRAPH);
+	NV_WRITE(NV03_PMC_ENABLE, NV_READ(NV03_PMC_ENABLE) |
+			 NV_PMC_ENABLE_PGRAPH);
+
+	/* Create Context Pointer Table */
+	dev_priv->ctx_table_size = 32 * 4;
+	if ((ret = nouveau_gpuobj_new_ref(dev, NULL, NULL, 0,
+					  dev_priv->ctx_table_size, 16,
+					  NVOBJ_FLAG_ZERO_ALLOC,
+					  &dev_priv->ctx_table)))
+		return ret;
+
+	NV_WRITE(NV10_PGRAPH_CHANNEL_CTX_TABLE,
+		 dev_priv->ctx_table->instance >> 4);
+
+	//XXX need to be done and save/restore for each fifo ???
+	nv20_graph_rdi(dev);
+
+	NV_WRITE(NV03_PGRAPH_INTR   , 0xFFFFFFFF);
+	NV_WRITE(NV03_PGRAPH_INTR_EN, 0xFFFFFFFF);
+
+	NV_WRITE(NV04_PGRAPH_DEBUG_0, 0xFFFFFFFF);
+	NV_WRITE(NV04_PGRAPH_DEBUG_0, 0x00000000);
+	NV_WRITE(NV04_PGRAPH_DEBUG_1, 0x00118700);
+	NV_WRITE(NV04_PGRAPH_DEBUG_3, 0xF20E0435); /* 0x4 = auto ctx switch */
+	NV_WRITE(NV10_PGRAPH_DEBUG_4, 0x00000000);
+	NV_WRITE(0x40009C           , 0x00000040);
+
+	if (dev_priv->chipset >= 0x25) {
+		NV_WRITE(0x400890, 0x00080000);
+		NV_WRITE(0x400610, 0x304B1FB6);
+		NV_WRITE(0x400B80, 0x18B82880);
+		NV_WRITE(0x400B84, 0x44000000);
+		NV_WRITE(0x400098, 0x40000080);
+		NV_WRITE(0x400B88, 0x000000ff);
+	} else {
+		NV_WRITE(0x400880, 0x00080000);
+		NV_WRITE(0x400094, 0x00000005);
+		NV_WRITE(0x400B80, 0x45CAA208);
+		NV_WRITE(0x400B84, 0x24000000);
+		NV_WRITE(0x400098, 0x00000040);
+		NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00E00038);
+		NV_WRITE(NV10_PGRAPH_RDI_DATA , 0x00000030);
+		NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00E10038);
+		NV_WRITE(NV10_PGRAPH_RDI_DATA , 0x00000030);
+	}
+
+	/* copy tile info from PFB */
+	for (i=0; i<NV10_PFB_TILE__SIZE; i++) {
+		NV_WRITE(NV10_PGRAPH_TILE(i), NV_READ(NV10_PFB_TILE(i)));
+		NV_WRITE(NV10_PGRAPH_TLIMIT(i), NV_READ(NV10_PFB_TLIMIT(i)));
+		NV_WRITE(NV10_PGRAPH_TSIZE(i), NV_READ(NV10_PFB_TSIZE(i)));
+		NV_WRITE(NV10_PGRAPH_TSTATUS(i), NV_READ(NV10_PFB_TSTATUS(i)));
+	}
+
+	NV_WRITE(NV10_PGRAPH_CTX_CONTROL, 0x10010100);
+	NV_WRITE(NV10_PGRAPH_STATE      , 0xFFFFFFFF);
+	NV_WRITE(NV04_PGRAPH_FIFO       , 0x00000001);
+
+	tmp = NV_READ(NV10_PGRAPH_SURFACE) & 0x0007ff00;
+	NV_WRITE(NV10_PGRAPH_SURFACE, tmp);
+	tmp = NV_READ(NV10_PGRAPH_SURFACE) | 0x00020100;
+	NV_WRITE(NV10_PGRAPH_SURFACE, tmp);
+
+	/* begin RAM config */
+	vramsz = drm_get_resource_len(dev, 0) - 1;
+	NV_WRITE(0x4009A4, NV_READ(NV04_PFB_CFG0));
+	NV_WRITE(0x4009A8, NV_READ(NV04_PFB_CFG1));
+	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00EA0000);
+	NV_WRITE(NV10_PGRAPH_RDI_DATA , NV_READ(NV04_PFB_CFG0));
+	NV_WRITE(NV10_PGRAPH_RDI_INDEX, 0x00EA0004);
+	NV_WRITE(NV10_PGRAPH_RDI_DATA , NV_READ(NV04_PFB_CFG1));
+	NV_WRITE(0x400820, 0);
+	NV_WRITE(0x400824, 0);
+	NV_WRITE(0x400864, vramsz-1);
+	NV_WRITE(0x400868, vramsz-1);
+
+	/* interesting.. the below overwrites some of the tile setup above.. */
+	NV_WRITE(0x400B20, 0x00000000);
+	NV_WRITE(0x400B04, 0xFFFFFFFF);
+
+	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_XMIN, 0);
+	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_YMIN, 0);
+	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_XMAX, 0x7fff);
+	NV_WRITE(NV03_PGRAPH_ABS_UCLIP_YMAX, 0x7fff);
+
+	return 0;
+}
+
+void nv20_graph_takedown(struct drm_device *dev)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	nouveau_gpuobj_ref_del(dev, &dev_priv->ctx_table);
+}
+
 int nv30_graph_init(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -3077,10 +3188,3 @@ int nv30_graph_init(struct drm_device *dev)
 	return 0;
 }
 
-void nv30_graph_takedown(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-
-	nouveau_gpuobj_ref_del(dev, &dev_priv->ctx_table);
-}
-