cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rkvdec.h (3147B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Rockchip Video Decoder driver
      4 *
      5 * Copyright (C) 2019 Collabora, Ltd.
      6 *
      7 * Based on rkvdec driver by Google LLC. (Tomasz Figa <tfiga@chromium.org>)
      8 * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
      9 * Copyright (C) 2011 Samsung Electronics Co., Ltd.
     10 */
     11#ifndef RKVDEC_H_
     12#define RKVDEC_H_
     13
     14#include <linux/platform_device.h>
     15#include <linux/videodev2.h>
     16#include <linux/wait.h>
     17#include <linux/clk.h>
     18
     19#include <media/v4l2-ctrls.h>
     20#include <media/v4l2-device.h>
     21#include <media/v4l2-ioctl.h>
     22#include <media/videobuf2-core.h>
     23#include <media/videobuf2-dma-contig.h>
     24
     25struct rkvdec_ctx;
     26
     27struct rkvdec_ctrl_desc {
     28	struct v4l2_ctrl_config cfg;
     29};
     30
     31struct rkvdec_ctrls {
     32	const struct rkvdec_ctrl_desc *ctrls;
     33	unsigned int num_ctrls;
     34};
     35
     36struct rkvdec_run {
     37	struct {
     38		struct vb2_v4l2_buffer *src;
     39		struct vb2_v4l2_buffer *dst;
     40	} bufs;
     41};
     42
     43struct rkvdec_vp9_decoded_buffer_info {
     44	/* Info needed when the decoded frame serves as a reference frame. */
     45	unsigned short width;
     46	unsigned short height;
     47	unsigned int bit_depth : 4;
     48};
     49
     50struct rkvdec_decoded_buffer {
     51	/* Must be the first field in this struct. */
     52	struct v4l2_m2m_buffer base;
     53
     54	union {
     55		struct rkvdec_vp9_decoded_buffer_info vp9;
     56	};
     57};
     58
     59static inline struct rkvdec_decoded_buffer *
     60vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf)
     61{
     62	return container_of(buf, struct rkvdec_decoded_buffer,
     63			    base.vb.vb2_buf);
     64}
     65
     66struct rkvdec_coded_fmt_ops {
     67	int (*adjust_fmt)(struct rkvdec_ctx *ctx,
     68			  struct v4l2_format *f);
     69	int (*start)(struct rkvdec_ctx *ctx);
     70	void (*stop)(struct rkvdec_ctx *ctx);
     71	int (*run)(struct rkvdec_ctx *ctx);
     72	void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf,
     73		     struct vb2_v4l2_buffer *dst_buf,
     74		     enum vb2_buffer_state result);
     75	int (*try_ctrl)(struct rkvdec_ctx *ctx, struct v4l2_ctrl *ctrl);
     76};
     77
     78struct rkvdec_coded_fmt_desc {
     79	u32 fourcc;
     80	struct v4l2_frmsize_stepwise frmsize;
     81	const struct rkvdec_ctrls *ctrls;
     82	const struct rkvdec_coded_fmt_ops *ops;
     83	unsigned int num_decoded_fmts;
     84	const u32 *decoded_fmts;
     85	u32 subsystem_flags;
     86};
     87
     88struct rkvdec_dev {
     89	struct v4l2_device v4l2_dev;
     90	struct media_device mdev;
     91	struct video_device vdev;
     92	struct v4l2_m2m_dev *m2m_dev;
     93	struct device *dev;
     94	struct clk_bulk_data *clocks;
     95	void __iomem *regs;
     96	struct mutex vdev_lock; /* serializes ioctls */
     97	struct delayed_work watchdog_work;
     98};
     99
    100struct rkvdec_ctx {
    101	struct v4l2_fh fh;
    102	struct v4l2_format coded_fmt;
    103	struct v4l2_format decoded_fmt;
    104	const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
    105	struct v4l2_ctrl_handler ctrl_hdl;
    106	struct rkvdec_dev *dev;
    107	void *priv;
    108};
    109
    110static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh)
    111{
    112	return container_of(fh, struct rkvdec_ctx, fh);
    113}
    114
    115struct rkvdec_aux_buf {
    116	void *cpu;
    117	dma_addr_t dma;
    118	size_t size;
    119};
    120
    121void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
    122void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
    123
    124extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops;
    125extern const struct rkvdec_coded_fmt_ops rkvdec_vp9_fmt_ops;
    126
    127#endif /* RKVDEC_H_ */