drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 656 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
new file mode 100644
index 000000000000..6f51ae0daecf
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
@@ -0,0 +1,656 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * 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 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
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <core/client.h>
+#include <nvif/unpack.h>
+#include <nvif/class.h>
+#include <core/engctx.h>
+#include <core/namedb.h>
+#include <core/handle.h>
+#include <core/ramht.h>
+#include <core/event.h>
+
+#include <subdev/instmem.h>
+#include <subdev/instmem/nv04.h>
+#include <subdev/timer.h>
+#include <subdev/fb.h>
+
+#include <engine/fifo.h>
+
+#include "nv04.h"
+
+static struct ramfc_desc
+nv04_ramfc[] = {
+	{ 32,  0, 0x00,  0, NV04_PFIFO_CACHE1_DMA_PUT },
+	{ 32,  0, 0x04,  0, NV04_PFIFO_CACHE1_DMA_GET },
+	{ 16,  0, 0x08,  0, NV04_PFIFO_CACHE1_DMA_INSTANCE },
+	{ 16, 16, 0x08,  0, NV04_PFIFO_CACHE1_DMA_DCOUNT },
+	{ 32,  0, 0x0c,  0, NV04_PFIFO_CACHE1_DMA_STATE },
+	{ 32,  0, 0x10,  0, NV04_PFIFO_CACHE1_DMA_FETCH },
+	{ 32,  0, 0x14,  0, NV04_PFIFO_CACHE1_ENGINE },
+	{ 32,  0, 0x18,  0, NV04_PFIFO_CACHE1_PULL1 },
+	{}
+};
+
+/*******************************************************************************
+ * FIFO channel objects
+ ******************************************************************************/
+
+int
+nv04_fifo_object_attach(struct nouveau_object *parent,
+			struct nouveau_object *object, u32 handle)
+{
+	struct nv04_fifo_priv *priv = (void *)parent->engine;
+	struct nv04_fifo_chan *chan = (void *)parent;
+	u32 context, chid = chan->base.chid;
+	int ret;
+
+	if (nv_iclass(object, NV_GPUOBJ_CLASS))
+		context = nv_gpuobj(object)->addr >> 4;
+	else
+		context = 0x00000004; /* just non-zero */
+
+	switch (nv_engidx(object->engine)) {
+	case NVDEV_ENGINE_DMAOBJ:
+	case NVDEV_ENGINE_SW:
+		context |= 0x00000000;
+		break;
+	case NVDEV_ENGINE_GR:
+		context |= 0x00010000;
+		break;
+	case NVDEV_ENGINE_MPEG:
+		context |= 0x00020000;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	context |= 0x80000000; /* valid */
+	context |= chid << 24;
+
+	mutex_lock(&nv_subdev(priv)->mutex);
+	ret = nouveau_ramht_insert(priv->ramht, chid, handle, context);
+	mutex_unlock(&nv_subdev(priv)->mutex);
+	return ret;
+}
+
+void
+nv04_fifo_object_detach(struct nouveau_object *parent, int cookie)
+{
+	struct nv04_fifo_priv *priv = (void *)parent->engine;
+	mutex_lock(&nv_subdev(priv)->mutex);
+	nouveau_ramht_remove(priv->ramht, cookie);
+	mutex_unlock(&nv_subdev(priv)->mutex);
+}
+
+int
+nv04_fifo_context_attach(struct nouveau_object *parent,
+			 struct nouveau_object *object)
+{
+	nv_engctx(object)->addr = nouveau_fifo_chan(parent)->chid;
+	return 0;
+}
+
+static int
+nv04_fifo_chan_ctor(struct nouveau_object *parent,
+		    struct nouveau_object *engine,
+		    struct nouveau_oclass *oclass, void *data, u32 size,
+		    struct nouveau_object **pobject)
+{
+	union {
+		struct nv03_channel_dma_v0 v0;
+	} *args = data;
+	struct nv04_fifo_priv *priv = (void *)engine;
+	struct nv04_fifo_chan *chan;
+	int ret;
+
+	nv_ioctl(parent, "create channel dma size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(parent, "create channel dma vers %d pushbuf %08x "
+				 "offset %016llx\n", args->v0.version,
+			 args->v0.pushbuf, args->v0.offset);
+	} else
+		return ret;
+
+	ret = nouveau_fifo_channel_create(parent, engine, oclass, 0, 0x800000,
+					  0x10000, args->v0.pushbuf,
+					  (1ULL << NVDEV_ENGINE_DMAOBJ) |
+					  (1ULL << NVDEV_ENGINE_SW) |
+					  (1ULL << NVDEV_ENGINE_GR), &chan);
+	*pobject = nv_object(chan);
+	if (ret)
+		return ret;
+
+	args->v0.chid = chan->base.chid;
+
+	nv_parent(chan)->object_attach = nv04_fifo_object_attach;
+	nv_parent(chan)->object_detach = nv04_fifo_object_detach;
+	nv_parent(chan)->context_attach = nv04_fifo_context_attach;
+	chan->ramfc = chan->base.chid * 32;
+
+	nv_wo32(priv->ramfc, chan->ramfc + 0x00, args->v0.offset);
+	nv_wo32(priv->ramfc, chan->ramfc + 0x04, args->v0.offset);
+	nv_wo32(priv->ramfc, chan->ramfc + 0x08, chan->base.pushgpu->addr >> 4);
+	nv_wo32(priv->ramfc, chan->ramfc + 0x10,
+			     NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
+			     NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
+#ifdef __BIG_ENDIAN
+			     NV_PFIFO_CACHE1_BIG_ENDIAN |
+#endif
+			     NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
+	return 0;
+}
+
+void
+nv04_fifo_chan_dtor(struct nouveau_object *object)
+{
+	struct nv04_fifo_priv *priv = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	struct ramfc_desc *c = priv->ramfc_desc;
+
+	do {
+		nv_wo32(priv->ramfc, chan->ramfc + c->ctxp, 0x00000000);
+	} while ((++c)->bits);
+
+	nouveau_fifo_channel_destroy(&chan->base);
+}
+
+int
+nv04_fifo_chan_init(struct nouveau_object *object)
+{
+	struct nv04_fifo_priv *priv = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	u32 mask = 1 << chan->base.chid;
+	unsigned long flags;
+	int ret;
+
+	ret = nouveau_fifo_channel_init(&chan->base);
+	if (ret)
+		return ret;
+
+	spin_lock_irqsave(&priv->base.lock, flags);
+	nv_mask(priv, NV04_PFIFO_MODE, mask, mask);
+	spin_unlock_irqrestore(&priv->base.lock, flags);
+	return 0;
+}
+
+int
+nv04_fifo_chan_fini(struct nouveau_object *object, bool suspend)
+{
+	struct nv04_fifo_priv *priv = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	struct nouveau_gpuobj *fctx = priv->ramfc;
+	struct ramfc_desc *c;
+	unsigned long flags;
+	u32 data = chan->ramfc;
+	u32 chid;
+
+	/* prevent fifo context switches */
+	spin_lock_irqsave(&priv->base.lock, flags);
+	nv_wr32(priv, NV03_PFIFO_CACHES, 0);
+
+	/* if this channel is active, replace it with a null context */
+	chid = nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH1) & priv->base.max;
+	if (chid == chan->base.chid) {
+		nv_mask(priv, NV04_PFIFO_CACHE1_DMA_PUSH, 0x00000001, 0);
+		nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 0);
+		nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0);
+
+		c = priv->ramfc_desc;
+		do {
+			u32 rm = ((1ULL << c->bits) - 1) << c->regs;
+			u32 cm = ((1ULL << c->bits) - 1) << c->ctxs;
+			u32 rv = (nv_rd32(priv, c->regp) &  rm) >> c->regs;
+			u32 cv = (nv_ro32(fctx, c->ctxp + data) & ~cm);
+			nv_wo32(fctx, c->ctxp + data, cv | (rv << c->ctxs));
+		} while ((++c)->bits);
+
+		c = priv->ramfc_desc;
+		do {
+			nv_wr32(priv, c->regp, 0x00000000);
+		} while ((++c)->bits);
+
+		nv_wr32(priv, NV03_PFIFO_CACHE1_GET, 0);
+		nv_wr32(priv, NV03_PFIFO_CACHE1_PUT, 0);
+		nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH1, priv->base.max);
+		nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 1);
+		nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
+	}
+
+	/* restore normal operation, after disabling dma mode */
+	nv_mask(priv, NV04_PFIFO_MODE, 1 << chan->base.chid, 0);
+	nv_wr32(priv, NV03_PFIFO_CACHES, 1);
+	spin_unlock_irqrestore(&priv->base.lock, flags);
+
+	return nouveau_fifo_channel_fini(&chan->base, suspend);
+}
+
+static struct nouveau_ofuncs
+nv04_fifo_ofuncs = {
+	.ctor = nv04_fifo_chan_ctor,
+	.dtor = nv04_fifo_chan_dtor,
+	.init = nv04_fifo_chan_init,
+	.fini = nv04_fifo_chan_fini,
+	.map  = _nouveau_fifo_channel_map,
+	.rd32 = _nouveau_fifo_channel_rd32,
+	.wr32 = _nouveau_fifo_channel_wr32,
+	.ntfy = _nouveau_fifo_channel_ntfy
+};
+
+static struct nouveau_oclass
+nv04_fifo_sclass[] = {
+	{ NV03_CHANNEL_DMA, &nv04_fifo_ofuncs },
+	{}
+};
+
+/*******************************************************************************
+ * FIFO context - basically just the instmem reserved for the channel
+ ******************************************************************************/
+
+int
+nv04_fifo_context_ctor(struct nouveau_object *parent,
+		       struct nouveau_object *engine,
+		       struct nouveau_oclass *oclass, void *data, u32 size,
+		       struct nouveau_object **pobject)
+{
+	struct nv04_fifo_base *base;
+	int ret;
+
+	ret = nouveau_fifo_context_create(parent, engine, oclass, NULL, 0x1000,
+				          0x1000, NVOBJ_FLAG_HEAP, &base);
+	*pobject = nv_object(base);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static struct nouveau_oclass
+nv04_fifo_cclass = {
+	.handle = NV_ENGCTX(FIFO, 0x04),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv04_fifo_context_ctor,
+		.dtor = _nouveau_fifo_context_dtor,
+		.init = _nouveau_fifo_context_init,
+		.fini = _nouveau_fifo_context_fini,
+		.rd32 = _nouveau_fifo_context_rd32,
+		.wr32 = _nouveau_fifo_context_wr32,
+	},
+};
+
+/*******************************************************************************
+ * PFIFO engine
+ ******************************************************************************/
+
+void
+nv04_fifo_pause(struct nouveau_fifo *pfifo, unsigned long *pflags)
+__acquires(priv->base.lock)
+{
+	struct nv04_fifo_priv *priv = (void *)pfifo;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->base.lock, flags);
+	*pflags = flags;
+
+	nv_wr32(priv, NV03_PFIFO_CACHES, 0x00000000);
+	nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000000);
+
+	/* in some cases the puller may be left in an inconsistent state
+	 * if you try to stop it while it's busy translating handles.
+	 * sometimes you get a CACHE_ERROR, sometimes it just fails
+	 * silently; sending incorrect instance offsets to PGRAPH after
+	 * it's started up again.
+	 *
+	 * to avoid this, we invalidate the most recently calculated
+	 * instance.
+	 */
+	if (!nv_wait(priv, NV04_PFIFO_CACHE1_PULL0,
+			   NV04_PFIFO_CACHE1_PULL0_HASH_BUSY, 0x00000000))
+		nv_warn(priv, "timeout idling puller\n");
+
+	if (nv_rd32(priv, NV04_PFIFO_CACHE1_PULL0) &
+			  NV04_PFIFO_CACHE1_PULL0_HASH_FAILED)
+		nv_wr32(priv, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
+
+	nv_wr32(priv, NV04_PFIFO_CACHE1_HASH, 0x00000000);
+}
+
+void
+nv04_fifo_start(struct nouveau_fifo *pfifo, unsigned long *pflags)
+__releases(priv->base.lock)
+{
+	struct nv04_fifo_priv *priv = (void *)pfifo;
+	unsigned long flags = *pflags;
+
+	nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000001);
+	nv_wr32(priv, NV03_PFIFO_CACHES, 0x00000001);
+
+	spin_unlock_irqrestore(&priv->base.lock, flags);
+}
+
+static const char *
+nv_dma_state_err(u32 state)
+{
+	static const char * const desc[] = {
+		"NONE", "CALL_SUBR_ACTIVE", "INVALID_MTHD", "RET_SUBR_INACTIVE",
+		"INVALID_CMD", "IB_EMPTY"/* NV50+ */, "MEM_FAULT", "UNK"
+	};
+	return desc[(state >> 29) & 0x7];
+}
+
+static bool
+nv04_fifo_swmthd(struct nv04_fifo_priv *priv, u32 chid, u32 addr, u32 data)
+{
+	struct nv04_fifo_chan *chan = NULL;
+	struct nouveau_handle *bind;
+	const int subc = (addr >> 13) & 0x7;
+	const int mthd = addr & 0x1ffc;
+	bool handled = false;
+	unsigned long flags;
+	u32 engine;
+
+	spin_lock_irqsave(&priv->base.lock, flags);
+	if (likely(chid >= priv->base.min && chid <= priv->base.max))
+		chan = (void *)priv->base.channel[chid];
+	if (unlikely(!chan))
+		goto out;
+
+	switch (mthd) {
+	case 0x0000:
+		bind = nouveau_namedb_get(nv_namedb(chan), data);
+		if (unlikely(!bind))
+			break;
+
+		if (nv_engidx(bind->object->engine) == NVDEV_ENGINE_SW) {
+			engine = 0x0000000f << (subc * 4);
+			chan->subc[subc] = data;
+			handled = true;
+
+			nv_mask(priv, NV04_PFIFO_CACHE1_ENGINE, engine, 0);
+		}
+
+		nouveau_namedb_put(bind);
+		break;
+	default:
+		engine = nv_rd32(priv, NV04_PFIFO_CACHE1_ENGINE);
+		if (unlikely(((engine >> (subc * 4)) & 0xf) != 0))
+			break;
+
+		bind = nouveau_namedb_get(nv_namedb(chan), chan->subc[subc]);
+		if (likely(bind)) {
+			if (!nv_call(bind->object, mthd, data))
+				handled = true;
+			nouveau_namedb_put(bind);
+		}
+		break;
+	}
+
+out:
+	spin_unlock_irqrestore(&priv->base.lock, flags);
+	return handled;
+}
+
+static void
+nv04_fifo_cache_error(struct nouveau_device *device,
+		struct nv04_fifo_priv *priv, u32 chid, u32 get)
+{
+	u32 mthd, data;
+	int ptr;
+
+	/* NV_PFIFO_CACHE1_GET actually goes to 0xffc before wrapping on my
+	 * G80 chips, but CACHE1 isn't big enough for this much data.. Tests
+	 * show that it wraps around to the start at GET=0x800.. No clue as to
+	 * why..
+	 */
+	ptr = (get & 0x7ff) >> 2;
+
+	if (device->card_type < NV_40) {
+		mthd = nv_rd32(priv, NV04_PFIFO_CACHE1_METHOD(ptr));
+		data = nv_rd32(priv, NV04_PFIFO_CACHE1_DATA(ptr));
+	} else {
+		mthd = nv_rd32(priv, NV40_PFIFO_CACHE1_METHOD(ptr));
+		data = nv_rd32(priv, NV40_PFIFO_CACHE1_DATA(ptr));
+	}
+
+	if (!nv04_fifo_swmthd(priv, chid, mthd, data)) {
+		const char *client_name =
+			nouveau_client_name_for_fifo_chid(&priv->base, chid);
+		nv_error(priv,
+			 "CACHE_ERROR - ch %d [%s] subc %d mthd 0x%04x data 0x%08x\n",
+			 chid, client_name, (mthd >> 13) & 7, mthd & 0x1ffc,
+			 data);
+	}
+
+	nv_wr32(priv, NV04_PFIFO_CACHE1_DMA_PUSH, 0);
+	nv_wr32(priv, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
+
+	nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0,
+		nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH0) & ~1);
+	nv_wr32(priv, NV03_PFIFO_CACHE1_GET, get + 4);
+	nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0,
+		nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH0) | 1);
+	nv_wr32(priv, NV04_PFIFO_CACHE1_HASH, 0);
+
+	nv_wr32(priv, NV04_PFIFO_CACHE1_DMA_PUSH,
+		nv_rd32(priv, NV04_PFIFO_CACHE1_DMA_PUSH) | 1);
+	nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
+}
+
+static void
+nv04_fifo_dma_pusher(struct nouveau_device *device, struct nv04_fifo_priv *priv,
+		u32 chid)
+{
+	const char *client_name;
+	u32 dma_get = nv_rd32(priv, 0x003244);
+	u32 dma_put = nv_rd32(priv, 0x003240);
+	u32 push = nv_rd32(priv, 0x003220);
+	u32 state = nv_rd32(priv, 0x003228);
+
+	client_name = nouveau_client_name_for_fifo_chid(&priv->base, chid);
+
+	if (device->card_type == NV_50) {
+		u32 ho_get = nv_rd32(priv, 0x003328);
+		u32 ho_put = nv_rd32(priv, 0x003320);
+		u32 ib_get = nv_rd32(priv, 0x003334);
+		u32 ib_put = nv_rd32(priv, 0x003330);
+
+		nv_error(priv,
+			 "DMA_PUSHER - ch %d [%s] get 0x%02x%08x put 0x%02x%08x ib_get 0x%08x ib_put 0x%08x state 0x%08x (err: %s) push 0x%08x\n",
+			 chid, client_name, ho_get, dma_get, ho_put, dma_put,
+			 ib_get, ib_put, state, nv_dma_state_err(state), push);
+
+		/* METHOD_COUNT, in DMA_STATE on earlier chipsets */
+		nv_wr32(priv, 0x003364, 0x00000000);
+		if (dma_get != dma_put || ho_get != ho_put) {
+			nv_wr32(priv, 0x003244, dma_put);
+			nv_wr32(priv, 0x003328, ho_put);
+		} else
+		if (ib_get != ib_put)
+			nv_wr32(priv, 0x003334, ib_put);
+	} else {
+		nv_error(priv,
+			 "DMA_PUSHER - ch %d [%s] get 0x%08x put 0x%08x state 0x%08x (err: %s) push 0x%08x\n",
+			 chid, client_name, dma_get, dma_put, state,
+			 nv_dma_state_err(state), push);
+
+		if (dma_get != dma_put)
+			nv_wr32(priv, 0x003244, dma_put);
+	}
+
+	nv_wr32(priv, 0x003228, 0x00000000);
+	nv_wr32(priv, 0x003220, 0x00000001);
+	nv_wr32(priv, 0x002100, NV_PFIFO_INTR_DMA_PUSHER);
+}
+
+void
+nv04_fifo_intr(struct nouveau_subdev *subdev)
+{
+	struct nouveau_device *device = nv_device(subdev);
+	struct nv04_fifo_priv *priv = (void *)subdev;
+	uint32_t status, reassign;
+	int cnt = 0;
+
+	reassign = nv_rd32(priv, NV03_PFIFO_CACHES) & 1;
+	while ((status = nv_rd32(priv, NV03_PFIFO_INTR_0)) && (cnt++ < 100)) {
+		uint32_t chid, get;
+
+		nv_wr32(priv, NV03_PFIFO_CACHES, 0);
+
+		chid = nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH1) & priv->base.max;
+		get  = nv_rd32(priv, NV03_PFIFO_CACHE1_GET);
+
+		if (status & NV_PFIFO_INTR_CACHE_ERROR) {
+			nv04_fifo_cache_error(device, priv, chid, get);
+			status &= ~NV_PFIFO_INTR_CACHE_ERROR;
+		}
+
+		if (status & NV_PFIFO_INTR_DMA_PUSHER) {
+			nv04_fifo_dma_pusher(device, priv, chid);
+			status &= ~NV_PFIFO_INTR_DMA_PUSHER;
+		}
+
+		if (status & NV_PFIFO_INTR_SEMAPHORE) {
+			uint32_t sem;
+
+			status &= ~NV_PFIFO_INTR_SEMAPHORE;
+			nv_wr32(priv, NV03_PFIFO_INTR_0,
+				NV_PFIFO_INTR_SEMAPHORE);
+
+			sem = nv_rd32(priv, NV10_PFIFO_CACHE1_SEMAPHORE);
+			nv_wr32(priv, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
+
+			nv_wr32(priv, NV03_PFIFO_CACHE1_GET, get + 4);
+			nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
+		}
+
+		if (device->card_type == NV_50) {
+			if (status & 0x00000010) {
+				status &= ~0x00000010;
+				nv_wr32(priv, 0x002100, 0x00000010);
+			}
+
+			if (status & 0x40000000) {
+				nv_wr32(priv, 0x002100, 0x40000000);
+				nouveau_fifo_uevent(&priv->base);
+				status &= ~0x40000000;
+			}
+		}
+
+		if (status) {
+			nv_warn(priv, "unknown intr 0x%08x, ch %d\n",
+				status, chid);
+			nv_wr32(priv, NV03_PFIFO_INTR_0, status);
+			status = 0;
+		}
+
+		nv_wr32(priv, NV03_PFIFO_CACHES, reassign);
+	}
+
+	if (status) {
+		nv_error(priv, "still angry after %d spins, halt\n", cnt);
+		nv_wr32(priv, 0x002140, 0);
+		nv_wr32(priv, 0x000140, 0);
+	}
+
+	nv_wr32(priv, 0x000100, 0x00000100);
+}
+
+static int
+nv04_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	       struct nouveau_oclass *oclass, void *data, u32 size,
+	       struct nouveau_object **pobject)
+{
+	struct nv04_instmem_priv *imem = nv04_instmem(parent);
+	struct nv04_fifo_priv *priv;
+	int ret;
+
+	ret = nouveau_fifo_create(parent, engine, oclass, 0, 15, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nouveau_ramht_ref(imem->ramht, &priv->ramht);
+	nouveau_gpuobj_ref(imem->ramro, &priv->ramro);
+	nouveau_gpuobj_ref(imem->ramfc, &priv->ramfc);
+
+	nv_subdev(priv)->unit = 0x00000100;
+	nv_subdev(priv)->intr = nv04_fifo_intr;
+	nv_engine(priv)->cclass = &nv04_fifo_cclass;
+	nv_engine(priv)->sclass = nv04_fifo_sclass;
+	priv->base.pause = nv04_fifo_pause;
+	priv->base.start = nv04_fifo_start;
+	priv->ramfc_desc = nv04_ramfc;
+	return 0;
+}
+
+void
+nv04_fifo_dtor(struct nouveau_object *object)
+{
+	struct nv04_fifo_priv *priv = (void *)object;
+	nouveau_gpuobj_ref(NULL, &priv->ramfc);
+	nouveau_gpuobj_ref(NULL, &priv->ramro);
+	nouveau_ramht_ref(NULL, &priv->ramht);
+	nouveau_fifo_destroy(&priv->base);
+}
+
+int
+nv04_fifo_init(struct nouveau_object *object)
+{
+	struct nv04_fifo_priv *priv = (void *)object;
+	int ret;
+
+	ret = nouveau_fifo_init(&priv->base);
+	if (ret)
+		return ret;
+
+	nv_wr32(priv, NV04_PFIFO_DELAY_0, 0x000000ff);
+	nv_wr32(priv, NV04_PFIFO_DMA_TIMESLICE, 0x0101ffff);
+
+	nv_wr32(priv, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
+				       ((priv->ramht->bits - 9) << 16) |
+				        (priv->ramht->gpuobj.addr >> 8));
+	nv_wr32(priv, NV03_PFIFO_RAMRO, priv->ramro->addr >> 8);
+	nv_wr32(priv, NV03_PFIFO_RAMFC, priv->ramfc->addr >> 8);
+
+	nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH1, priv->base.max);
+
+	nv_wr32(priv, NV03_PFIFO_INTR_0, 0xffffffff);
+	nv_wr32(priv, NV03_PFIFO_INTR_EN_0, 0xffffffff);
+
+	nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 1);
+	nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
+	nv_wr32(priv, NV03_PFIFO_CACHES, 1);
+	return 0;
+}
+
+struct nouveau_oclass *
+nv04_fifo_oclass = &(struct nouveau_oclass) {
+	.handle = NV_ENGINE(FIFO, 0x04),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv04_fifo_ctor,
+		.dtor = nv04_fifo_dtor,
+		.init = nv04_fifo_init,
+		.fini = _nouveau_fifo_fini,
+	},
+};