1 files changed, 270 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c
new file mode 100644
index 000000000000..25b60aff40e4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c
@@ -0,0 +1,270 @@
+/*
+ * 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 "channv50.h"
+
+#include <core/client.h>
+#include <core/ramht.h>
+#include <subdev/mmu.h>
+#include <subdev/timer.h>
+
+static int
+nv50_fifo_chan_engine_addr(struct nvkm_engine *engine)
+{
+	switch (engine->subdev.index) {
+	case NVKM_ENGINE_DMAOBJ:
+	case NVKM_ENGINE_SW    : return -1;
+	case NVKM_ENGINE_GR    : return 0x0000;
+	case NVKM_ENGINE_MPEG  : return 0x0060;
+	default:
+		WARN_ON(1);
+		return -1;
+	}
+}
+
+static int
+nv50_fifo_chan_engine_fini(struct nvkm_fifo_chan *base,
+			   struct nvkm_engine *engine, bool suspend)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	struct nv50_fifo *fifo = chan->fifo;
+	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	int offset, ret = 0;
+	u32 me;
+
+	offset = nv50_fifo_chan_engine_addr(engine);
+	if (offset < 0)
+		return 0;
+
+	/* HW bug workaround:
+	 *
+	 * PFIFO will hang forever if the connected engines don't report
+	 * that they've processed the context switch request.
+	 *
+	 * In order for the kickoff to work, we need to ensure all the
+	 * connected engines are in a state where they can answer.
+	 *
+	 * Newer chipsets don't seem to suffer from this issue, and well,
+	 * there's also a "ignore these engines" bitmask reg we can use
+	 * if we hit the issue there..
+	 */
+	me = nvkm_mask(device, 0x00b860, 0x00000001, 0x00000001);
+
+	/* do the kickoff... */
+	nvkm_wr32(device, 0x0032fc, chan->base.inst->addr >> 12);
+	if (nvkm_msec(device, 2000,
+		if (nvkm_rd32(device, 0x0032fc) != 0xffffffff)
+			break;
+	) < 0) {
+		nvkm_error(subdev, "channel %d [%s] unload timeout\n",
+			   chan->base.chid, chan->base.object.client->name);
+		if (suspend)
+			ret = -EBUSY;
+	}
+	nvkm_wr32(device, 0x00b860, me);
+
+	if (ret == 0) {
+		nvkm_kmap(chan->eng);
+		nvkm_wo32(chan->eng, offset + 0x00, 0x00000000);
+		nvkm_wo32(chan->eng, offset + 0x04, 0x00000000);
+		nvkm_wo32(chan->eng, offset + 0x08, 0x00000000);
+		nvkm_wo32(chan->eng, offset + 0x0c, 0x00000000);
+		nvkm_wo32(chan->eng, offset + 0x10, 0x00000000);
+		nvkm_wo32(chan->eng, offset + 0x14, 0x00000000);
+		nvkm_done(chan->eng);
+	}
+
+	return ret;
+}
+
+static int
+nv50_fifo_chan_engine_init(struct nvkm_fifo_chan *base,
+			   struct nvkm_engine *engine)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	struct nvkm_gpuobj *engn = chan->engn[engine->subdev.index];
+	u64 limit, start;
+	int offset;
+
+	offset = nv50_fifo_chan_engine_addr(engine);
+	if (offset < 0)
+		return 0;
+	limit = engn->addr + engn->size - 1;
+	start = engn->addr;
+
+	nvkm_kmap(chan->eng);
+	nvkm_wo32(chan->eng, offset + 0x00, 0x00190000);
+	nvkm_wo32(chan->eng, offset + 0x04, lower_32_bits(limit));
+	nvkm_wo32(chan->eng, offset + 0x08, lower_32_bits(start));
+	nvkm_wo32(chan->eng, offset + 0x0c, upper_32_bits(limit) << 24 |
+					    upper_32_bits(start));
+	nvkm_wo32(chan->eng, offset + 0x10, 0x00000000);
+	nvkm_wo32(chan->eng, offset + 0x14, 0x00000000);
+	nvkm_done(chan->eng);
+	return 0;
+}
+
+void
+nv50_fifo_chan_engine_dtor(struct nvkm_fifo_chan *base,
+			   struct nvkm_engine *engine)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	nvkm_gpuobj_del(&chan->engn[engine->subdev.index]);
+}
+
+static int
+nv50_fifo_chan_engine_ctor(struct nvkm_fifo_chan *base,
+			   struct nvkm_engine *engine,
+			   struct nvkm_object *object)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	int engn = engine->subdev.index;
+
+	if (nv50_fifo_chan_engine_addr(engine) < 0)
+		return 0;
+
+	return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
+}
+
+void
+nv50_fifo_chan_object_dtor(struct nvkm_fifo_chan *base, int cookie)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	nvkm_ramht_remove(chan->ramht, cookie);
+}
+
+static int
+nv50_fifo_chan_object_ctor(struct nvkm_fifo_chan *base,
+			   struct nvkm_object *object)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	u32 handle = object->handle;
+	u32 context;
+
+	switch (object->engine->subdev.index) {
+	case NVKM_ENGINE_DMAOBJ:
+	case NVKM_ENGINE_SW    : context = 0x00000000; break;
+	case NVKM_ENGINE_GR    : context = 0x00100000; break;
+	case NVKM_ENGINE_MPEG  : context = 0x00200000; break;
+	default:
+		WARN_ON(1);
+		return -EINVAL;
+	}
+
+	return nvkm_ramht_insert(chan->ramht, object, 0, 4, handle, context);
+}
+
+void
+nv50_fifo_chan_fini(struct nvkm_fifo_chan *base)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	struct nv50_fifo *fifo = chan->fifo;
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	u32 chid = chan->base.chid;
+
+	/* remove channel from runlist, fifo will unload context */
+	nvkm_mask(device, 0x002600 + (chid * 4), 0x80000000, 0x00000000);
+	nv50_fifo_runlist_update(fifo);
+	nvkm_wr32(device, 0x002600 + (chid * 4), 0x00000000);
+}
+
+static void
+nv50_fifo_chan_init(struct nvkm_fifo_chan *base)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	struct nv50_fifo *fifo = chan->fifo;
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	u64 addr = chan->ramfc->addr >> 12;
+	u32 chid = chan->base.chid;
+
+	nvkm_wr32(device, 0x002600 + (chid * 4), 0x80000000 | addr);
+	nv50_fifo_runlist_update(fifo);
+}
+
+void *
+nv50_fifo_chan_dtor(struct nvkm_fifo_chan *base)
+{
+	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
+	nvkm_vm_ref(NULL, &chan->vm, chan->pgd);
+	nvkm_ramht_del(&chan->ramht);
+	nvkm_gpuobj_del(&chan->pgd);
+	nvkm_gpuobj_del(&chan->eng);
+	nvkm_gpuobj_del(&chan->cache);
+	nvkm_gpuobj_del(&chan->ramfc);
+	return chan;
+}
+
+static const struct nvkm_fifo_chan_func
+nv50_fifo_chan_func = {
+	.dtor = nv50_fifo_chan_dtor,
+	.init = nv50_fifo_chan_init,
+	.fini = nv50_fifo_chan_fini,
+	.engine_ctor = nv50_fifo_chan_engine_ctor,
+	.engine_dtor = nv50_fifo_chan_engine_dtor,
+	.engine_init = nv50_fifo_chan_engine_init,
+	.engine_fini = nv50_fifo_chan_engine_fini,
+	.object_ctor = nv50_fifo_chan_object_ctor,
+	.object_dtor = nv50_fifo_chan_object_dtor,
+};
+
+int
+nv50_fifo_chan_ctor(struct nv50_fifo *fifo, u64 vm, u64 push,
+		    const struct nvkm_oclass *oclass,
+		    struct nv50_fifo_chan *chan)
+{
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	int ret;
+
+	ret = nvkm_fifo_chan_ctor(&nv50_fifo_chan_func, &fifo->base,
+				  0x10000, 0x1000, false, vm, push,
+				  (1ULL << NVKM_ENGINE_DMAOBJ) |
+				  (1ULL << NVKM_ENGINE_SW) |
+				  (1ULL << NVKM_ENGINE_GR) |
+				  (1ULL << NVKM_ENGINE_MPEG),
+				  0, 0xc00000, 0x2000, oclass, &chan->base);
+	chan->fifo = fifo;
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 0x0200, 0x1000, true, chan->base.inst,
+			      &chan->ramfc);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 0x1200, 0, true, chan->base.inst,
+			      &chan->eng);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 0x4000, 0, false, chan->base.inst,
+			      &chan->pgd);
+	if (ret)
+		return ret;
+
+	ret = nvkm_ramht_new(device, 0x8000, 16, chan->base.inst, &chan->ramht);
+	if (ret)
+		return ret;
+
+	return nvkm_vm_ref(chan->base.vm, &chan->vm, chan->pgd);
+}