These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / engine / sw / chan.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c b/kernel/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
new file mode 100644 (file)
index 0000000..d082f4f
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
@@ -0,0 +1,111 @@
+/*
+ * 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 "chan.h"
+
+#include <core/notify.h>
+#include <engine/fifo.h>
+
+#include <nvif/event.h>
+#include <nvif/unpack.h>
+
+bool
+nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data)
+{
+       switch (mthd) {
+       case 0x0000:
+               return true;
+       case 0x0500:
+               nvkm_event_send(&chan->event, 1, 0, NULL, 0);
+               return true;
+       default:
+               if (chan->func->mthd)
+                       return chan->func->mthd(chan, subc, mthd, data);
+               break;
+       }
+       return false;
+}
+
+static int
+nvkm_sw_chan_event_ctor(struct nvkm_object *object, void *data, u32 size,
+                       struct nvkm_notify *notify)
+{
+       union {
+               struct nvif_notify_uevent_req none;
+       } *req = data;
+       int ret;
+
+       if (nvif_unvers(req->none)) {
+               notify->size  = sizeof(struct nvif_notify_uevent_rep);
+               notify->types = 1;
+               notify->index = 0;
+       }
+
+       return ret;
+}
+
+static const struct nvkm_event_func
+nvkm_sw_chan_event = {
+       .ctor = nvkm_sw_chan_event_ctor,
+};
+
+static void *
+nvkm_sw_chan_dtor(struct nvkm_object *object)
+{
+       struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
+       struct nvkm_sw *sw = chan->sw;
+       unsigned long flags;
+       void *data = chan;
+
+       if (chan->func->dtor)
+               data = chan->func->dtor(chan);
+       nvkm_event_fini(&chan->event);
+
+       spin_lock_irqsave(&sw->engine.lock, flags);
+       list_del(&chan->head);
+       spin_unlock_irqrestore(&sw->engine.lock, flags);
+       return data;
+}
+
+static const struct nvkm_object_func
+nvkm_sw_chan = {
+       .dtor = nvkm_sw_chan_dtor,
+};
+
+int
+nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
+                 struct nvkm_fifo_chan *fifo, const struct nvkm_oclass *oclass,
+                 struct nvkm_sw_chan *chan)
+{
+       unsigned long flags;
+
+       nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
+       chan->func = func;
+       chan->sw = sw;
+       chan->fifo = fifo;
+       spin_lock_irqsave(&sw->engine.lock, flags);
+       list_add(&chan->head, &sw->chan);
+       spin_unlock_irqrestore(&sw->engine.lock, flags);
+
+       return nvkm_event_init(&nvkm_sw_chan_event, 1, 1, &chan->event);
+}