1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2020-2023 Intel Corporation
*/
#ifndef __IVPU_IPC_H__
#define __IVPU_IPC_H__
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include "vpu_jsm_api.h"
struct ivpu_bo;
/* VPU FW boot notification */
#define IVPU_IPC_CHAN_BOOT_MSG 0x3ff
#define IVPU_IPC_BOOT_MSG_DATA_ADDR 0x424f4f54
/* The alignment to be used for IPC Buffers and IPC Data. */
#define IVPU_IPC_ALIGNMENT 64
#define IVPU_IPC_HDR_FREE 0
#define IVPU_IPC_HDR_ALLOCATED 1
/**
* struct ivpu_ipc_hdr - The IPC message header structure, exchanged
* with the VPU device firmware.
* @data_addr: The VPU address of the payload (JSM message)
* @data_size: The size of the payload.
* @channel: The channel used.
* @src_node: The Node ID of the sender.
* @dst_node: The Node ID of the intended receiver.
* @status: IPC buffer usage status
*/
struct ivpu_ipc_hdr {
u32 data_addr;
u32 data_size;
u16 channel;
u8 src_node;
u8 dst_node;
u8 status;
} __packed __aligned(IVPU_IPC_ALIGNMENT);
struct ivpu_ipc_consumer {
struct list_head link;
u32 channel;
u32 tx_vpu_addr;
u32 request_id;
bool aborted;
spinlock_t rx_lock; /* Protects rx_msg_list and aborted */
struct list_head rx_msg_list;
wait_queue_head_t rx_msg_wq;
};
struct ivpu_ipc_info {
struct gen_pool *mm_tx;
struct ivpu_bo *mem_tx;
struct ivpu_bo *mem_rx;
atomic_t rx_msg_count;
spinlock_t cons_list_lock; /* Protects cons_list */
struct list_head cons_list;
atomic_t request_id;
struct mutex lock; /* Lock on status */
bool on;
};
int ivpu_ipc_init(struct ivpu_device *vdev);
void ivpu_ipc_fini(struct ivpu_device *vdev);
void ivpu_ipc_enable(struct ivpu_device *vdev);
void ivpu_ipc_disable(struct ivpu_device *vdev);
void ivpu_ipc_reset(struct ivpu_device *vdev);
int ivpu_ipc_irq_handler(struct ivpu_device *vdev);
void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
u32 channel);
void ivpu_ipc_consumer_del(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons);
int ivpu_ipc_receive(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
struct ivpu_ipc_hdr *ipc_buf, struct vpu_jsm_msg *ipc_payload,
unsigned long timeout_ms);
int ivpu_ipc_send_receive_active(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
enum vpu_ipc_msg_type expected_resp, struct vpu_jsm_msg *resp,
u32 channel, unsigned long timeout_ms);
int ivpu_ipc_send_receive(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
enum vpu_ipc_msg_type expected_resp, struct vpu_jsm_msg *resp,
u32 channel, unsigned long timeout_ms);
#endif /* __IVPU_IPC_H__ */
|
