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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ispstat.h (4420B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * ispstat.h
      4 *
      5 * TI OMAP3 ISP - Statistics core
      6 *
      7 * Copyright (C) 2010 Nokia Corporation
      8 * Copyright (C) 2009 Texas Instruments, Inc
      9 *
     10 * Contacts: David Cohen <dacohen@gmail.com>
     11 *	     Laurent Pinchart <laurent.pinchart@ideasonboard.com>
     12 *	     Sakari Ailus <sakari.ailus@iki.fi>
     13 */
     14
     15#ifndef OMAP3_ISP_STAT_H
     16#define OMAP3_ISP_STAT_H
     17
     18#include <linux/types.h>
     19#include <linux/omap3isp.h>
     20#include <media/v4l2-event.h>
     21
     22#include "isp.h"
     23#include "ispvideo.h"
     24
     25#define STAT_MAX_BUFS		5
     26#define STAT_NEVENTS		8
     27
     28#define STAT_BUF_DONE		0	/* Buffer is ready */
     29#define STAT_NO_BUF		1	/* An error has occurred */
     30#define STAT_BUF_WAITING_DMA	2	/* Histogram only: DMA is running */
     31
     32struct dma_chan;
     33struct ispstat;
     34
     35struct ispstat_buffer {
     36	struct sg_table sgt;
     37	void *virt_addr;
     38	dma_addr_t dma_addr;
     39	struct timespec64 ts;
     40	u32 buf_size;
     41	u32 frame_number;
     42	u16 config_counter;
     43	u8 empty;
     44};
     45
     46struct ispstat_ops {
     47	/*
     48	 * Validate new params configuration.
     49	 * new_conf->buf_size value must be changed to the exact buffer size
     50	 * necessary for the new configuration if it's smaller.
     51	 */
     52	int (*validate_params)(struct ispstat *stat, void *new_conf);
     53
     54	/*
     55	 * Save new params configuration.
     56	 * stat->priv->buf_size value must be set to the exact buffer size for
     57	 * the new configuration.
     58	 * stat->update is set to 1 if new configuration is different than
     59	 * current one.
     60	 */
     61	void (*set_params)(struct ispstat *stat, void *new_conf);
     62
     63	/* Apply stored configuration. */
     64	void (*setup_regs)(struct ispstat *stat, void *priv);
     65
     66	/* Enable/Disable module. */
     67	void (*enable)(struct ispstat *stat, int enable);
     68
     69	/* Verify is module is busy. */
     70	int (*busy)(struct ispstat *stat);
     71
     72	/* Used for specific operations during generic buf process task. */
     73	int (*buf_process)(struct ispstat *stat);
     74};
     75
     76enum ispstat_state_t {
     77	ISPSTAT_DISABLED = 0,
     78	ISPSTAT_DISABLING,
     79	ISPSTAT_ENABLED,
     80	ISPSTAT_ENABLING,
     81	ISPSTAT_SUSPENDED,
     82};
     83
     84struct ispstat {
     85	struct v4l2_subdev subdev;
     86	struct media_pad pad;	/* sink pad */
     87
     88	/* Control */
     89	unsigned configured:1;
     90	unsigned update:1;
     91	unsigned buf_processing:1;
     92	unsigned sbl_ovl_recover:1;
     93	u8 inc_config;
     94	atomic_t buf_err;
     95	enum ispstat_state_t state;	/* enabling/disabling state */
     96	struct isp_device *isp;
     97	void *priv;		/* pointer to priv config struct */
     98	void *recover_priv;	/* pointer to recover priv configuration */
     99	struct mutex ioctl_lock; /* serialize private ioctl */
    100
    101	const struct ispstat_ops *ops;
    102
    103	/* Buffer */
    104	u8 wait_acc_frames;
    105	u16 config_counter;
    106	u32 frame_number;
    107	u32 buf_size;
    108	u32 buf_alloc_size;
    109	struct dma_chan *dma_ch;
    110	unsigned long event_type;
    111	struct ispstat_buffer *buf;
    112	struct ispstat_buffer *active_buf;
    113	struct ispstat_buffer *locked_buf;
    114};
    115
    116struct ispstat_generic_config {
    117	/*
    118	 * Fields must be in the same order as in:
    119	 *  - omap3isp_h3a_aewb_config
    120	 *  - omap3isp_h3a_af_config
    121	 *  - omap3isp_hist_config
    122	 */
    123	u32 buf_size;
    124	u16 config_counter;
    125};
    126
    127int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
    128int omap3isp_stat_request_statistics(struct ispstat *stat,
    129				     struct omap3isp_stat_data *data);
    130int omap3isp_stat_request_statistics_time32(struct ispstat *stat,
    131				     struct omap3isp_stat_data_time32 *data);
    132int omap3isp_stat_init(struct ispstat *stat, const char *name,
    133		       const struct v4l2_subdev_ops *sd_ops);
    134void omap3isp_stat_cleanup(struct ispstat *stat);
    135int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
    136				  struct v4l2_fh *fh,
    137				  struct v4l2_event_subscription *sub);
    138int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
    139				    struct v4l2_fh *fh,
    140				    struct v4l2_event_subscription *sub);
    141int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
    142
    143int omap3isp_stat_busy(struct ispstat *stat);
    144int omap3isp_stat_pcr_busy(struct ispstat *stat);
    145void omap3isp_stat_suspend(struct ispstat *stat);
    146void omap3isp_stat_resume(struct ispstat *stat);
    147int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
    148void omap3isp_stat_sbl_overflow(struct ispstat *stat);
    149void omap3isp_stat_isr(struct ispstat *stat);
    150void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
    151void omap3isp_stat_dma_isr(struct ispstat *stat);
    152int omap3isp_stat_register_entities(struct ispstat *stat,
    153				    struct v4l2_device *vdev);
    154void omap3isp_stat_unregister_entities(struct ispstat *stat);
    155
    156#endif /* OMAP3_ISP_STAT_H */