1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c
new file mode 100644
index 000000000000..53c1f7e75b54
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2015 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 <bskeggs@redhat.com>
+ */
+#include "priv.h"
+#include "chan.h"
+
+#include <engine/fifo.h>
+
+bool
+nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)
+{
+	struct nvkm_sw_chan *chan;
+	bool handled = false;
+	unsigned long flags;
+
+	spin_lock_irqsave(&sw->engine.lock, flags);
+	list_for_each_entry(chan, &sw->chan, head) {
+		if (chan->fifo->chid == chid) {
+			handled = nvkm_sw_chan_mthd(chan, subc, mthd, data);
+			list_del(&chan->head);
+			list_add(&chan->head, &sw->chan);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
+	return handled;
+}
+
+static int
+nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);
+	const struct nvkm_sw_chan_sclass *sclass = oclass->engn;
+	return sclass->ctor(chan, oclass, data, size, pobject);
+}
+
+static int
+nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	int c = 0;
+
+	while (sw->func->sclass[c].ctor) {
+		if (c++ == index) {
+			oclass->engn = &sw->func->sclass[index];
+			oclass->base =  sw->func->sclass[index].base;
+			oclass->base.ctor = nvkm_sw_oclass_new;
+			return index;
+		}
+	}
+
+	return c;
+}
+
+static int
+nvkm_sw_cclass_get(struct nvkm_fifo_chan *fifoch,
+		   const struct nvkm_oclass *oclass,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	return sw->func->chan_new(sw, fifoch, oclass, pobject);
+}
+
+static void *
+nvkm_sw_dtor(struct nvkm_engine *engine)
+{
+	return nvkm_sw(engine);
+}
+
+static const struct nvkm_engine_func
+nvkm_sw = {
+	.dtor = nvkm_sw_dtor,
+	.fifo.cclass = nvkm_sw_cclass_get,
+	.fifo.sclass = nvkm_sw_oclass_get,
+};
+
+int
+nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device,
+	     int index, struct nvkm_sw **psw)
+{
+	struct nvkm_sw *sw;
+
+	if (!(sw = *psw = kzalloc(sizeof(*sw), GFP_KERNEL)))
+		return -ENOMEM;
+	INIT_LIST_HEAD(&sw->chan);
+	sw->func = func;
+
+	return nvkm_engine_ctor(&nvkm_sw, device, index, 0, true, &sw->engine);
+}