Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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_SCRATCH_2: buffer to store encoding context data for HW
29 * @BUF_VPSS: buffer to store VPSS context data for HW
30 * @BUF_TYPE_MAX: max buffer types
31 */
32enum iris_buffer_type {
33 BUF_INPUT = 1,
34 BUF_OUTPUT,
35 BUF_BIN,
36 BUF_ARP,
37 BUF_COMV,
38 BUF_NON_COMV,
39 BUF_LINE,
40 BUF_DPB,
41 BUF_PERSIST,
42 BUF_SCRATCH_1,
43 BUF_SCRATCH_2,
44 BUF_VPSS,
45 BUF_TYPE_MAX,
46};
47
48/*
49 * enum iris_buffer_attributes
50 *
51 * BUF_ATTR_DEFERRED: buffer queued by client but not submitted to firmware.
52 * BUF_ATTR_PENDING_RELEASE: buffers requested to be released from firmware.
53 * BUF_ATTR_QUEUED: buffers submitted to firmware.
54 * BUF_ATTR_DEQUEUED: buffers received from firmware.
55 * BUF_ATTR_BUFFER_DONE: buffers sent back to vb2.
56 */
57enum iris_buffer_attributes {
58 BUF_ATTR_DEFERRED = BIT(0),
59 BUF_ATTR_PENDING_RELEASE = BIT(1),
60 BUF_ATTR_QUEUED = BIT(2),
61 BUF_ATTR_DEQUEUED = BIT(3),
62 BUF_ATTR_BUFFER_DONE = BIT(4),
63};
64
65/**
66 * struct iris_buffer
67 *
68 * @vb2: v4l2 vb2 buffer
69 * @list: list head for the iris_buffers structure
70 * @inst: iris instance structure
71 * @type: enum for type of iris buffer
72 * @index: identifier for the iris buffer
73 * @fd: file descriptor of the buffer
74 * @buffer_size: accessible buffer size in bytes starting from addr_offset
75 * @data_offset: accessible buffer offset from base address
76 * @data_size: data size in bytes
77 * @device_addr: device address of the buffer
78 * @kvaddr: kernel virtual address of the buffer
79 * @dma_attrs: dma attributes
80 * @flags: buffer flags. It is represented as bit masks.
81 * @timestamp: timestamp of the buffer in nano seconds (ns)
82 * @attr: enum for iris buffer attributes
83 */
84struct iris_buffer {
85 struct vb2_v4l2_buffer vb2;
86 struct list_head list;
87 struct iris_inst *inst;
88 enum iris_buffer_type type;
89 u32 index;
90 int fd;
91 size_t buffer_size;
92 u32 data_offset;
93 size_t data_size;
94 dma_addr_t device_addr;
95 void *kvaddr;
96 unsigned long dma_attrs;
97 u32 flags; /* V4L2_BUF_FLAG_* */
98 u64 timestamp;
99 enum iris_buffer_attributes attr;
100};
101
102struct iris_buffers {
103 struct list_head list;
104 u32 min_count;
105 u32 size;
106};
107
108int iris_get_buffer_size(struct iris_inst *inst, enum iris_buffer_type buffer_type);
109void iris_get_internal_buffers(struct iris_inst *inst, u32 plane);
110int iris_create_internal_buffers(struct iris_inst *inst, u32 plane);
111int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane);
112int iris_queue_internal_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buffer_type);
113int iris_destroy_internal_buffer(struct iris_inst *inst, struct iris_buffer *buffer);
114int iris_destroy_all_internal_buffers(struct iris_inst *inst, u32 plane);
115int iris_destroy_dequeued_internal_buffers(struct iris_inst *inst, u32 plane);
116int iris_alloc_and_queue_persist_bufs(struct iris_inst *inst, enum iris_buffer_type buf_type);
117int iris_alloc_and_queue_input_int_bufs(struct iris_inst *inst);
118int iris_queue_buffer(struct iris_inst *inst, struct iris_buffer *buf);
119int iris_queue_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buf_type);
120int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf);
121void iris_vb2_queue_error(struct iris_inst *inst);
122
123#endif