drm/nouveau: port all engines to new engine module format

This is a HUGE commit, but it's not nearly as bad as it looks - any problems
can be isolated to a particular chipset and engine combination.  It was
simply too difficult to port each one at a time, the compat layers are
*already* ridiculous.

Most of the changes here are simply to the glue, the process for each of the
engine modules was to start with a standard skeleton and copy+paste the old
code into the appropriate places, fixing up variable names etc as needed.

v2: Marcin Slusarz <marcin.slusarz@gmail.com>
- fix find/replace bug in license header

v3: Ben Skeggs <bskeggs@redhat.com>
- bump indirect pushbuf size to 8KiB, 4KiB barely enough for userspace and
  left no space for kernel's requirements during GEM pushbuf submission.
- fix duplicate assignments noticed by clang

v4: Marcin Slusarz <marcin.slusarz@gmail.com>
- add sparse annotations to nv04_fifo_pause/nv04_fifo_start
- use ioread32_native/iowrite32_native for fifo control registers

v5: Ben Skeggs <bskeggs@redhat.com>
- rebase on v3.6-rc4, modified to keep copy engine fix intact
- nv10/fence: unmap fence bo before destroying
- fixed fermi regression when using nvidia gr fuc
- fixed typo in supported dma_mask checking

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
new file mode 100644
index 0000000..16a9afb
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -0,0 +1,125 @@
+/*
+ * 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 <engine/software.h>
+#include <engine/disp.h>
+
+struct nv50_disp_priv {
+	struct nouveau_disp base;
+};
+
+static struct nouveau_oclass
+nv50_disp_sclass[] = {
+	{},
+};
+
+static void
+nv50_disp_intr_vblank(struct nv50_disp_priv *priv, int crtc)
+{
+	struct nouveau_disp *disp = &priv->base;
+	struct nouveau_software_chan *chan, *temp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&disp->vblank.lock, flags);
+	list_for_each_entry_safe(chan, temp, &disp->vblank.list, vblank.head) {
+		if (chan->vblank.crtc != crtc)
+			continue;
+
+		nv_wr32(priv, 0x001704, chan->vblank.channel);
+		nv_wr32(priv, 0x001710, 0x80000000 | chan->vblank.ctxdma);
+
+		if (nv_device(priv)->chipset == 0x50) {
+			nv_wr32(priv, 0x001570, chan->vblank.offset);
+			nv_wr32(priv, 0x001574, chan->vblank.value);
+		} else {
+			if (nv_device(priv)->chipset >= 0xc0) {
+				nv_wr32(priv, 0x06000c,
+					upper_32_bits(chan->vblank.offset));
+			}
+			nv_wr32(priv, 0x060010, chan->vblank.offset);
+			nv_wr32(priv, 0x060014, chan->vblank.value);
+		}
+
+		list_del(&chan->vblank.head);
+		if (disp->vblank.put)
+			disp->vblank.put(disp->vblank.data, crtc);
+	}
+	spin_unlock_irqrestore(&disp->vblank.lock, flags);
+
+	if (disp->vblank.notify)
+		disp->vblank.notify(disp->vblank.data, crtc);
+}
+
+static void
+nv50_disp_intr(struct nouveau_subdev *subdev)
+{
+	struct nv50_disp_priv *priv = (void *)subdev;
+	u32 stat1 = nv_rd32(priv, 0x610024);
+
+	if (stat1 & 0x00000004) {
+		nv50_disp_intr_vblank(priv, 0);
+		nv_wr32(priv, 0x610024, 0x00000004);
+		stat1 &= ~0x00000004;
+	}
+
+	if (stat1 & 0x00000008) {
+		nv50_disp_intr_vblank(priv, 1);
+		nv_wr32(priv, 0x610024, 0x00000008);
+		stat1 &= ~0x00000008;
+	}
+
+}
+
+static int
+nv50_disp_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+		  struct nouveau_oclass *oclass, void *data, u32 size,
+		  struct nouveau_object **pobject)
+{
+	struct nv50_disp_priv *priv;
+	int ret;
+
+	ret = nouveau_disp_create(parent, engine, oclass, "PDISP",
+				  "display", &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nv_engine(priv)->sclass = nv50_disp_sclass;
+	nv_subdev(priv)->intr = nv50_disp_intr;
+
+	INIT_LIST_HEAD(&priv->base.vblank.list);
+	spin_lock_init(&priv->base.vblank.lock);
+	return 0;
+}
+
+struct nouveau_oclass
+nv50_disp_oclass = {
+	.handle = NV_ENGINE(DISP, 0x50),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_disp_ctor,
+		.dtor = _nouveau_disp_dtor,
+		.init = _nouveau_disp_init,
+		.fini = _nouveau_disp_fini,
+	},
+};