mirror of
https://github.com/patjak/facetimehd.git
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74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* FacetimeHD camera driver
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*
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* Copyright (C) 2015 Sven Schnelle <svens@stackframe.org>
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*
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*/
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#ifndef FTHD_BUFFER_H
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#define FTHD_BUFFER_H
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#include <linux/scatterlist.h>
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#include "fthd_buffer.h"
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enum fthd_buffer_state {
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BUF_FREE,
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BUF_ALLOC,
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BUF_DRV_QUEUED,
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BUF_HW_QUEUED,
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};
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struct dma_descriptor {
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u32 addr0;
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u32 addr1;
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u32 addr2;
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u32 field_c;
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u32 field_10;
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u32 field_14;
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u32 count;
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u32 pool;
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u64 tag;
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} __attribute__((packed));
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struct dma_descriptor_list {
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u32 field0;
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u32 count;
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struct dma_descriptor desc[4];
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char unknown[216];
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} __attribute__((packed));
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struct iommu_obj {
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struct resource base;
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int size;
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int offset;
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};
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struct fthd_plane {
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u8 *virt;
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u64 phys;
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dma_addr_t dma;
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int len;
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struct iommu_obj *iommu;
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};
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struct h2t_buf_ctx {
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enum fthd_buffer_state state;
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struct vb2_buffer *vb;
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struct iommu_obj *plane[4];
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struct isp_mem_obj *dma_desc_obj;
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struct dma_descriptor_list dma_desc_list;
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/* waitqueue for signaling buffer completion */
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wait_queue_head_t wq;
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int done;
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};
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extern int setup_buffers(struct fthd_private *dev_priv);
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extern int fthd_buffer_init(struct fthd_private *dev_priv);
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extern void fthd_buffer_exit(struct fthd_private *dev_priv);
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extern void fthd_buffer_return_handler(struct fthd_private *dev_priv, u32 offset, int size);
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extern void fthd_buffer_queued_handler(struct fthd_private *dev_priv, u32 offset);
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extern struct iommu_obj *iommu_allocate_sgtable(struct fthd_private *dev_priv, struct sg_table *);
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extern void iommu_free(struct fthd_private *dev_priv, struct iommu_obj *obj);
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#endif
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