Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
4 */
5
6#ifndef __IRIS_BUFFER_H__
7#define __IRIS_BUFFER_H__
8
9#include <media/videobuf2-v4l2.h>
10
11struct iris_inst;
12
13#define to_iris_buffer(ptr) container_of(ptr, struct iris_buffer, vb2)
14
15/**
16 * enum iris_buffer_type
17 *
18 * @BUF_INPUT: input buffer to the iris hardware
19 * @BUF_OUTPUT: output buffer from the iris hardware
20 * @BUF_BIN: buffer to store intermediate bin data
21 * @BUF_ARP: buffer for auto register programming
22 * @BUF_COMV: buffer to store colocated motion vectors
23 * @BUF_NON_COMV: buffer to hold config data for HW
24 * @BUF_LINE: buffer to store decoding/encoding context data for HW
25 * @BUF_DPB: buffer to store display picture buffers for reference
26 * @BUF_PERSIST: buffer to store session context data
27 * @BUF_SCRATCH_1: buffer to store decoding/encoding context data for HW
28 * @BUF_TYPE_MAX: max buffer types
29 */
30enum iris_buffer_type {
31 BUF_INPUT = 1,
32 BUF_OUTPUT,
33 BUF_BIN,
34 BUF_ARP,
35 BUF_COMV,
36 BUF_NON_COMV,
37 BUF_LINE,
38 BUF_DPB,
39 BUF_PERSIST,
40 BUF_SCRATCH_1,
41 BUF_TYPE_MAX,
42};
43
44/*
45 * enum iris_buffer_attributes
46 *
47 * BUF_ATTR_DEFERRED: buffer queued by client but not submitted to firmware.
48 * BUF_ATTR_PENDING_RELEASE: buffers requested to be released from firmware.
49 * BUF_ATTR_QUEUED: buffers submitted to firmware.
50 * BUF_ATTR_DEQUEUED: buffers received from firmware.
51 * BUF_ATTR_BUFFER_DONE: buffers sent back to vb2.
52 */
53enum iris_buffer_attributes {
54 BUF_ATTR_DEFERRED = BIT(0),
55 BUF_ATTR_PENDING_RELEASE = BIT(1),
56 BUF_ATTR_QUEUED = BIT(2),
57 BUF_ATTR_DEQUEUED = BIT(3),
58 BUF_ATTR_BUFFER_DONE = BIT(4),
59};
60
61/**
62 * struct iris_buffer
63 *
64 * @vb2: v4l2 vb2 buffer
65 * @list: list head for the iris_buffers structure
66 * @inst: iris instance structure
67 * @type: enum for type of iris buffer
68 * @index: identifier for the iris buffer
69 * @fd: file descriptor of the buffer
70 * @buffer_size: accessible buffer size in bytes starting from addr_offset
71 * @data_offset: accessible buffer offset from base address
72 * @data_size: data size in bytes
73 * @device_addr: device address of the buffer
74 * @kvaddr: kernel virtual address of the buffer
75 * @dma_attrs: dma attributes
76 * @flags: buffer flags. It is represented as bit masks.
77 * @timestamp: timestamp of the buffer in nano seconds (ns)
78 * @attr: enum for iris buffer attributes
79 */
80struct iris_buffer {
81 struct vb2_v4l2_buffer vb2;
82 struct list_head list;
83 struct iris_inst *inst;
84 enum iris_buffer_type type;
85 u32 index;
86 int fd;
87 size_t buffer_size;
88 u32 data_offset;
89 size_t data_size;
90 dma_addr_t device_addr;
91 void *kvaddr;
92 unsigned long dma_attrs;
93 u32 flags; /* V4L2_BUF_FLAG_* */
94 u64 timestamp;
95 enum iris_buffer_attributes attr;
96};
97
98struct iris_buffers {
99 struct list_head list;
100 u32 min_count;
101 u32 size;
102};
103
104int iris_get_buffer_size(struct iris_inst *inst, enum iris_buffer_type buffer_type);
105void iris_get_internal_buffers(struct iris_inst *inst, u32 plane);
106int iris_create_internal_buffers(struct iris_inst *inst, u32 plane);
107int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane);
108int iris_destroy_internal_buffer(struct iris_inst *inst, struct iris_buffer *buffer);
109int iris_destroy_internal_buffers(struct iris_inst *inst, u32 plane);
110int iris_alloc_and_queue_persist_bufs(struct iris_inst *inst);
111int iris_alloc_and_queue_input_int_bufs(struct iris_inst *inst);
112int iris_queue_buffer(struct iris_inst *inst, struct iris_buffer *buf);
113int iris_queue_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buf_type);
114int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf);
115void iris_vb2_queue_error(struct iris_inst *inst);
116
117#endif