Open source GPL/LGPL release

drivers/gpu/nvgpu/common/sync/channel_sync.c

@@ -0,0 +1,104 @@
+/*
+ * GK20A Channel Synchronization Abstraction
+ *
+ * Copyright (c) 2014-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+#include <nvgpu/kmem.h>
+#include <nvgpu/log.h>
+#include <nvgpu/atomic.h>
+#include <nvgpu/bug.h>
+#include <nvgpu/list.h>
+#include <nvgpu/nvhost.h>
+#include <nvgpu/gk20a.h>
+#include <nvgpu/os_fence.h>
+#include <nvgpu/os_fence_syncpts.h>
+#include <nvgpu/os_fence_semas.h>
+#include <nvgpu/channel.h>
+#include <nvgpu/channel_sync.h>
+#include <nvgpu/channel_sync_syncpt.h>
+#include <nvgpu/channel_sync_semaphore.h>
+#include <nvgpu/fence.h>
+
+#include "channel_sync_priv.h"
+
+struct nvgpu_channel_sync *nvgpu_channel_sync_create(struct nvgpu_channel *c)
+{
+	if (nvgpu_has_syncpoints(c->g)) {
+		return nvgpu_channel_sync_syncpt_create(c);
+	} else {
+#ifdef CONFIG_NVGPU_SW_SEMAPHORE
+		return nvgpu_channel_sync_semaphore_create(c);
+#else
+		return NULL;
+#endif
+	}
+}
+
+bool nvgpu_channel_sync_needs_os_fence_framework(struct gk20a *g)
+{
+	return !nvgpu_has_syncpoints(g);
+}
+
+int nvgpu_channel_sync_wait_fence_fd(struct nvgpu_channel_sync *s, int fd,
+	struct priv_cmd_entry **entry, u32 max_wait_cmds)
+{
+	return s->ops->wait_fence_fd(s, fd, entry, max_wait_cmds);
+}
+
+int nvgpu_channel_sync_incr(struct nvgpu_channel_sync *s,
+	struct priv_cmd_entry **entry, struct nvgpu_fence_type *fence,
+	bool need_sync_fence)
+{
+	return s->ops->incr(s, entry, fence, need_sync_fence);
+}
+
+int nvgpu_channel_sync_incr_user(struct nvgpu_channel_sync *s,
+	struct priv_cmd_entry **entry, struct nvgpu_fence_type *fence,
+	bool wfi, bool need_sync_fence)
+{
+	return s->ops->incr_user(s, entry, fence, wfi, need_sync_fence);
+}
+
+void nvgpu_channel_sync_mark_progress(struct nvgpu_channel_sync *s,
+	bool register_irq)
+{
+	s->ops->mark_progress(s, register_irq);
+}
+
+void nvgpu_channel_sync_set_min_eq_max(struct nvgpu_channel_sync *s)
+{
+	s->ops->set_min_eq_max(s);
+}
+
+void nvgpu_channel_sync_get_ref(struct nvgpu_channel_sync *s)
+{
+	nvgpu_atomic_inc(&s->refcount);
+}
+
+bool nvgpu_channel_sync_put_ref_and_check(struct nvgpu_channel_sync *s)
+{
+	return nvgpu_atomic_dec_and_test(&s->refcount);
+}
+
+void nvgpu_channel_sync_destroy(struct nvgpu_channel_sync *sync)
+{
+	sync->ops->destroy(sync);
+}