drm/nv108/fifo: initial support

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

drivers/gpu/drm/nouveau/Makefile

@@ -232,6 +232,7 @@ nouveau-y += core/engine/fifo/nv50.o
 nouveau-y += core/engine/fifo/nv84.o
 nouveau-y += core/engine/fifo/nvc0.o
 nouveau-y += core/engine/fifo/nve0.o
+nouveau-y += core/engine/fifo/nv108.o
 nouveau-y += core/engine/graph/ctxnv40.o
 nouveau-y += core/engine/graph/ctxnv50.o
 nouveau-y += core/engine/graph/ctxnvc0.o

drivers/gpu/drm/nouveau/core/engine/device/nve0.c

@@ -212,8 +212,8 @@ nve0_identify(struct nouveau_device *device)
 		device->oclass[NVDEV_SUBDEV_PWR    ] = &nv108_pwr_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] = &nvd0_dmaeng_oclass;
+		device->oclass[NVDEV_ENGINE_FIFO   ] =  nv108_fifo_oclass;
 #if 0
-		device->oclass[NVDEV_ENGINE_FIFO   ] =  nve0_fifo_oclass;
 		device->oclass[NVDEV_ENGINE_SW     ] =  nvc0_software_oclass;
 		device->oclass[NVDEV_ENGINE_GR     ] =  nvf0_graph_oclass;
 #endif

drivers/gpu/drm/nouveau/core/engine/fifo/nv108.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2013 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 "nve0.h"
+
+struct nouveau_oclass *
+nv108_fifo_oclass = &(struct nve0_fifo_impl) {
+	.base.handle = NV_ENGINE(FIFO, 0x08),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nve0_fifo_ctor,
+		.dtor = nve0_fifo_dtor,
+		.init = nve0_fifo_init,
+		.fini = _nouveau_fifo_fini,
+	},
+	.channels = 1024,
+}.base;

drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c

@@ -36,7 +36,8 @@
 #include <subdev/vm.h>
 
 #include <engine/dmaobj.h>
-#include <engine/fifo.h>
+
+#include "nve0.h"
 
 #define _(a,b) { (a), ((1ULL << (a)) | (b)) }
 static const struct {
@@ -575,15 +576,64 @@ nve0_fifo_uevent_disable(struct nouveau_event *event, int index)
 	nv_mask(priv, 0x002140, 0x80000000, 0x00000000);
 }
 
-static int
+int
+nve0_fifo_init(struct nouveau_object *object)
+{
+	struct nve0_fifo_priv *priv = (void *)object;
+	int ret, i;
+
+	ret = nouveau_fifo_init(&priv->base);
+	if (ret)
+		return ret;
+
+	/* enable all available PSUBFIFOs */
+	nv_wr32(priv, 0x000204, 0xffffffff);
+	priv->spoon_nr = hweight32(nv_rd32(priv, 0x000204));
+	nv_debug(priv, "%d subfifo(s)\n", priv->spoon_nr);
+
+	/* PSUBFIFO[n] */
+	for (i = 0; i < priv->spoon_nr; i++) {
+		nv_mask(priv, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
+		nv_wr32(priv, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
+		nv_wr32(priv, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTREN */
+	}
+
+	nv_wr32(priv, 0x002254, 0x10000000 | priv->user.bar.offset >> 12);
+
+	nv_wr32(priv, 0x002a00, 0xffffffff);
+	nv_wr32(priv, 0x002100, 0xffffffff);
+	nv_wr32(priv, 0x002140, 0x3fffffff);
+	return 0;
+}
+
+void
+nve0_fifo_dtor(struct nouveau_object *object)
+{
+	struct nve0_fifo_priv *priv = (void *)object;
+	int i;
+
+	nouveau_gpuobj_unmap(&priv->user.bar);
+	nouveau_gpuobj_ref(NULL, &priv->user.mem);
+
+	for (i = 0; i < FIFO_ENGINE_NR; i++) {
+		nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[1]);
+		nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[0]);
+	}
+
+	nouveau_fifo_destroy(&priv->base);
+}
+
+int
 nve0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 	       struct nouveau_oclass *oclass, void *data, u32 size,
 	       struct nouveau_object **pobject)
 {
+	struct nve0_fifo_impl *impl = (void *)oclass;
 	struct nve0_fifo_priv *priv;
 	int ret, i;
 
-	ret = nouveau_fifo_create(parent, engine, oclass, 0, 4095, &priv);
+	ret = nouveau_fifo_create(parent, engine, oclass, 0,
+				  impl->channels - 1, &priv);
 	*pobject = nv_object(priv);
 	if (ret)
 		return ret;
@@ -621,60 +671,14 @@ nve0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 	return 0;
 }
 
-static void
-nve0_fifo_dtor(struct nouveau_object *object)
-{
-	struct nve0_fifo_priv *priv = (void *)object;
-	int i;
-
-	nouveau_gpuobj_unmap(&priv->user.bar);
-	nouveau_gpuobj_ref(NULL, &priv->user.mem);
-
-	for (i = 0; i < FIFO_ENGINE_NR; i++) {
-		nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[1]);
-		nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[0]);
-	}
-
-	nouveau_fifo_destroy(&priv->base);
-}
-
-static int
-nve0_fifo_init(struct nouveau_object *object)
-{
-	struct nve0_fifo_priv *priv = (void *)object;
-	int ret, i;
-
-	ret = nouveau_fifo_init(&priv->base);
-	if (ret)
-		return ret;
-
-	/* enable all available PSUBFIFOs */
-	nv_wr32(priv, 0x000204, 0xffffffff);
-	priv->spoon_nr = hweight32(nv_rd32(priv, 0x000204));
-	nv_debug(priv, "%d subfifo(s)\n", priv->spoon_nr);
-
-	/* PSUBFIFO[n] */
-	for (i = 0; i < priv->spoon_nr; i++) {
-		nv_mask(priv, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
-		nv_wr32(priv, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
-		nv_wr32(priv, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTREN */
-	}
-
-	nv_wr32(priv, 0x002254, 0x10000000 | priv->user.bar.offset >> 12);
-
-	nv_wr32(priv, 0x002a00, 0xffffffff);
-	nv_wr32(priv, 0x002100, 0xffffffff);
-	nv_wr32(priv, 0x002140, 0x3fffffff);
-	return 0;
-}
-
 struct nouveau_oclass *
-nve0_fifo_oclass = &(struct nouveau_oclass) {
-	.handle = NV_ENGINE(FIFO, 0xe0),
-	.ofuncs = &(struct nouveau_ofuncs) {
+nve0_fifo_oclass = &(struct nve0_fifo_impl) {
+	.base.handle = NV_ENGINE(FIFO, 0xe0),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
 		.ctor = nve0_fifo_ctor,
 		.dtor = nve0_fifo_dtor,
 		.init = nve0_fifo_init,
 		.fini = _nouveau_fifo_fini,
 	},
-};
+	.channels = 4096,
+}.base;

drivers/gpu/drm/nouveau/core/engine/fifo/nve0.h

@@ -0,0 +1,17 @@
+#ifndef __NVKM_FIFO_NVE0_H__
+#define __NVKM_FIFO_NVE0_H__
+
+#include <engine/fifo.h>
+
+int  nve0_fifo_ctor(struct nouveau_object *, struct nouveau_object *,
+		    struct nouveau_oclass *, void *, u32,
+		    struct nouveau_object **);
+void nve0_fifo_dtor(struct nouveau_object *);
+int  nve0_fifo_init(struct nouveau_object *);
+
+struct nve0_fifo_impl {
+	struct nouveau_oclass base;
+	u32 channels;
+};
+
+#endif

drivers/gpu/drm/nouveau/core/include/engine/fifo.h

@@ -109,6 +109,7 @@ extern struct nouveau_oclass *nv50_fifo_oclass;
 extern struct nouveau_oclass *nv84_fifo_oclass;
 extern struct nouveau_oclass *nvc0_fifo_oclass;
 extern struct nouveau_oclass *nve0_fifo_oclass;
+extern struct nouveau_oclass *nv108_fifo_oclass;
 
 void nv04_fifo_intr(struct nouveau_subdev *);
 int  nv04_fifo_context_attach(struct nouveau_object *, struct nouveau_object *);