[src/trunk]: src/sys/external/bsd/drm2/include/linux dma fence chain stubs

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8492c38acf5f
branches:  trunk
changeset: 1028328:8492c38acf5f
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 10:38:53 2021 +0000

description:
dma fence chain stubs

diffstat:

 sys/external/bsd/drm2/include/linux/dma-fence-chain.h |  59 +++++++++++++++++++
 1 files changed, 59 insertions(+), 0 deletions(-)

diffs (63 lines):

diff -r b3faa40b9441 -r 8492c38acf5f sys/external/bsd/drm2/include/linux/dma-fence-chain.h
--- a/sys/external/bsd/drm2/include/linux/dma-fence-chain.h     Sun Dec 19 10:38:46 2021 +0000
+++ b/sys/external/bsd/drm2/include/linux/dma-fence-chain.h     Sun Dec 19 10:38:53 2021 +0000
@@ -0,0 +1,59 @@
+/*     $NetBSD: dma-fence-chain.h,v 1.2 2021/12/19 10:38:53 riastradh Exp $    */
+
+/*-
+ * Copyright (c) 2020 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef        _LINUX_DMA_FENCE_CHAIN_H_
+#define        _LINUX_DMA_FENCE_CHAIN_H_
+
+#include <sys/types.h>
+
+#include <linux/dma-fence.h>
+
+struct dma_fence_chain {
+       struct dma_fence        base;
+       uint64_t                prev_seqno;
+};
+
+#define        dma_fence_chain_find_seqno      linux_dma_fence_chain_find_seqno
+#define        dma_fence_chain_init            linux_dma_fence_chain_init
+#define        dma_fence_chain_walk            linux_dma_fence_chain_walk
+#define        to_dma_fence_chain              linux_to_dma_fence_chain
+
+void   dma_fence_chain_init(struct dma_fence_chain *, struct dma_fence *,
+           struct dma_fence *, uint64_t);
+int    dma_fence_chain_find_seqno(struct dma_fence **, uint64_t);
+struct dma_fence_chain *
+       to_dma_fence_chain(struct dma_fence *);
+struct dma_fence *
+       dma_fence_chain_walk(struct dma_fence *);
+
+#define        dma_fence_chain_for_each(VAR, FENCE)                                  \
+       for ((VAR) = dma_fence_get(FENCE);                                    \
+               (VAR) != NULL;                                                \
+               (VAR) = dma_fence_chain_walk(VAR))
+
+#endif /* _LINUX_DMA_FENCE_CHAIN_H_ */