1 1.4 riastrad /* $NetBSD: dma-fence-chain.h,v 1.4 2021/12/19 12:39:32 riastradh Exp $ */ 2 1.2 riastrad 3 1.2 riastrad /*- 4 1.2 riastrad * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 1.2 riastrad * All rights reserved. 6 1.2 riastrad * 7 1.2 riastrad * Redistribution and use in source and binary forms, with or without 8 1.2 riastrad * modification, are permitted provided that the following conditions 9 1.2 riastrad * are met: 10 1.2 riastrad * 1. Redistributions of source code must retain the above copyright 11 1.2 riastrad * notice, this list of conditions and the following disclaimer. 12 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright 13 1.2 riastrad * notice, this list of conditions and the following disclaimer in the 14 1.2 riastrad * documentation and/or other materials provided with the distribution. 15 1.2 riastrad * 16 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE. 27 1.2 riastrad */ 28 1.2 riastrad 29 1.2 riastrad #ifndef _LINUX_DMA_FENCE_CHAIN_H_ 30 1.2 riastrad #define _LINUX_DMA_FENCE_CHAIN_H_ 31 1.2 riastrad 32 1.2 riastrad #include <sys/types.h> 33 1.2 riastrad 34 1.2 riastrad #include <linux/dma-fence.h> 35 1.4 riastrad #include <linux/irq_work.h> 36 1.2 riastrad 37 1.2 riastrad struct dma_fence_chain { 38 1.4 riastrad /* Linux API */ 39 1.2 riastrad struct dma_fence base; 40 1.2 riastrad uint64_t prev_seqno; 41 1.3 riastrad 42 1.3 riastrad spinlock_t dfc_lock; 43 1.4 riastrad struct dma_fence *volatile dfc_prev; 44 1.4 riastrad struct dma_fence *dfc_fence; 45 1.4 riastrad struct dma_fence_cb dfc_callback; 46 1.4 riastrad struct irq_work dfc_irq_work; 47 1.2 riastrad }; 48 1.2 riastrad 49 1.2 riastrad #define dma_fence_chain_find_seqno linux_dma_fence_chain_find_seqno 50 1.2 riastrad #define dma_fence_chain_init linux_dma_fence_chain_init 51 1.2 riastrad #define dma_fence_chain_walk linux_dma_fence_chain_walk 52 1.2 riastrad #define to_dma_fence_chain linux_to_dma_fence_chain 53 1.2 riastrad 54 1.2 riastrad void dma_fence_chain_init(struct dma_fence_chain *, struct dma_fence *, 55 1.2 riastrad struct dma_fence *, uint64_t); 56 1.2 riastrad int dma_fence_chain_find_seqno(struct dma_fence **, uint64_t); 57 1.2 riastrad struct dma_fence_chain * 58 1.2 riastrad to_dma_fence_chain(struct dma_fence *); 59 1.2 riastrad struct dma_fence * 60 1.2 riastrad dma_fence_chain_walk(struct dma_fence *); 61 1.2 riastrad 62 1.2 riastrad #define dma_fence_chain_for_each(VAR, FENCE) \ 63 1.2 riastrad for ((VAR) = dma_fence_get(FENCE); \ 64 1.2 riastrad (VAR) != NULL; \ 65 1.2 riastrad (VAR) = dma_fence_chain_walk(VAR)) 66 1.2 riastrad 67 1.2 riastrad #endif /* _LINUX_DMA_FENCE_CHAIN_H_ */ 68
Indexes created Wed Sep 24 02:09:48 GMT 2025