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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vsp1_dl.h (2640B)

      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/*
      3 * vsp1_dl.h  --  R-Car VSP1 Display List
      4 *
      5 * Copyright (C) 2015 Renesas Corporation
      6 *
      7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
      8 */
      9#ifndef __VSP1_DL_H__
     10#define __VSP1_DL_H__
     11
     12#include <linux/types.h>
     13
     14struct vsp1_device;
     15struct vsp1_dl_body;
     16struct vsp1_dl_body_pool;
     17struct vsp1_dl_list;
     18struct vsp1_dl_manager;
     19
     20/* Keep these flags in sync with VSP1_DU_STATUS_* in include/media/vsp1.h. */
     21#define VSP1_DL_FRAME_END_COMPLETED		BIT(0)
     22#define VSP1_DL_FRAME_END_WRITEBACK		BIT(1)
     23#define VSP1_DL_FRAME_END_INTERNAL		BIT(2)
     24
     25/**
     26 * struct vsp1_dl_ext_cmd - Extended Display command
     27 * @pool: pool to which this command belongs
     28 * @free: entry in the pool of free commands list
     29 * @opcode: command type opcode
     30 * @flags: flags used by the command
     31 * @cmds: array of command bodies for this extended cmd
     32 * @num_cmds: quantity of commands in @cmds array
     33 * @cmd_dma: DMA address of the command body
     34 * @data: memory allocation for command-specific data
     35 * @data_dma: DMA address for command-specific data
     36 */
     37struct vsp1_dl_ext_cmd {
     38	struct vsp1_dl_cmd_pool *pool;
     39	struct list_head free;
     40
     41	u8 opcode;
     42	u32 flags;
     43
     44	struct vsp1_pre_ext_dl_body *cmds;
     45	unsigned int num_cmds;
     46	dma_addr_t cmd_dma;
     47
     48	void *data;
     49	dma_addr_t data_dma;
     50};
     51
     52void vsp1_dlm_setup(struct vsp1_device *vsp1);
     53
     54struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
     55					unsigned int index,
     56					unsigned int prealloc);
     57void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
     58void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
     59unsigned int vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
     60struct vsp1_dl_body *vsp1_dlm_dl_body_get(struct vsp1_dl_manager *dlm);
     61
     62struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
     63void vsp1_dl_list_put(struct vsp1_dl_list *dl);
     64struct vsp1_dl_body *vsp1_dl_list_get_body0(struct vsp1_dl_list *dl);
     65struct vsp1_dl_ext_cmd *vsp1_dl_get_pre_cmd(struct vsp1_dl_list *dl);
     66void vsp1_dl_list_commit(struct vsp1_dl_list *dl, unsigned int dl_flags);
     67
     68struct vsp1_dl_body_pool *
     69vsp1_dl_body_pool_create(struct vsp1_device *vsp1, unsigned int num_bodies,
     70			 unsigned int num_entries, size_t extra_size);
     71void vsp1_dl_body_pool_destroy(struct vsp1_dl_body_pool *pool);
     72struct vsp1_dl_body *vsp1_dl_body_get(struct vsp1_dl_body_pool *pool);
     73void vsp1_dl_body_put(struct vsp1_dl_body *dlb);
     74
     75void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data);
     76int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body *dlb);
     77int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl);
     78
     79#endif /* __VSP1_DL_H__ */