From 85c675d0d09a45a135bddd15d7b385f8758c32fb Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:35:05 +0200 Subject: Adding upstream version 6.7.7. Signed-off-by: Daniel Baumann --- include/media/videobuf-dma-sg.h | 102 ---------------------------------------- 1 file changed, 102 deletions(-) delete mode 100644 include/media/videobuf-dma-sg.h (limited to 'include/media/videobuf-dma-sg.h') diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h deleted file mode 100644 index 930ff8d454..0000000000 --- a/include/media/videobuf-dma-sg.h +++ /dev/null @@ -1,102 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * helper functions for SG DMA video4linux capture buffers - * - * The functions expect the hardware being able to scatter gather - * (i.e. the buffers are not linear in physical memory, but fragmented - * into PAGE_SIZE chunks). They also assume the driver does not need - * to touch the video data. - * - * (c) 2007 Mauro Carvalho Chehab, - * - * Highly based on video-buf written originally by: - * (c) 2001,02 Gerd Knorr - * (c) 2006 Mauro Carvalho Chehab, - * (c) 2006 Ted Walther and John Sokol - */ -#ifndef _VIDEOBUF_DMA_SG_H -#define _VIDEOBUF_DMA_SG_H - -#include - -/* --------------------------------------------------------------------- */ - -/* - * A small set of helper functions to manage buffers (both userland - * and kernel) for DMA. - * - * videobuf_dma_init_*() - * creates a buffer. The userland version takes a userspace - * pointer + length. The kernel version just wants the size and - * does memory allocation too using vmalloc_32(). - * - * videobuf_dma_*() - * see Documentation/core-api/dma-api-howto.rst, these functions to - * basically the same. The map function does also build a - * scatterlist for the buffer (and unmap frees it ...) - * - * videobuf_dma_free() - * no comment ... - * - */ - -struct videobuf_dmabuf { - u32 magic; - - /* for userland buffer */ - int offset; - size_t size; - struct page **pages; - - /* for kernel buffers */ - void *vaddr; - struct page **vaddr_pages; - dma_addr_t *dma_addr; - struct device *dev; - - /* for overlay buffers (pci-pci dma) */ - dma_addr_t bus_addr; - - /* common */ - struct scatterlist *sglist; - int sglen; - unsigned long nr_pages; - int direction; -}; - -struct videobuf_dma_sg_memory { - u32 magic; - - /* for mmap'ed buffers */ - struct videobuf_dmabuf dma; -}; - -/* - * Scatter-gather DMA buffer API. - * - * These functions provide a simple way to create a page list and a - * scatter-gather list from a kernel, userspace of physical address and map the - * memory for DMA operation. - * - * Despite the name, this is totally unrelated to videobuf, except that - * videobuf-dma-sg uses the same API internally. - */ -int videobuf_dma_free(struct videobuf_dmabuf *dma); - -int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma); -struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf); - -void *videobuf_sg_alloc(size_t size); - -void videobuf_queue_sg_init(struct videobuf_queue *q, - const struct videobuf_queue_ops *ops, - struct device *dev, - spinlock_t *irqlock, - enum v4l2_buf_type type, - enum v4l2_field field, - unsigned int msize, - void *priv, - struct mutex *ext_lock); - -#endif /* _VIDEOBUF_DMA_SG_H */ - -- cgit v1.2.3