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path: root/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
new file mode 100644
index 000000000000..d082f4f73a80
--- /dev/null
+++ b/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);
+}