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
|
// SPDX-License-Identifier: Apache-2.0
// Copyright (C) 2018 IBM Corp.
#include "config.h"
#include <errno.h>
#include "mboxd.h"
#include "protocol.h"
static const struct protocol_ops protocol_ops_v1 = {
.reset = protocol_v1_reset,
.get_info = protocol_v1_get_info,
.get_flash_info = protocol_v1_get_flash_info,
.create_window = protocol_v1_create_window,
.mark_dirty = protocol_v1_mark_dirty,
.erase = NULL,
.flush = protocol_v1_flush,
.close = protocol_v1_close,
.ack = protocol_v1_ack,
};
static const struct protocol_ops protocol_ops_v2 = {
.reset = protocol_v1_reset,
.get_info = protocol_v2_get_info,
.get_flash_info = protocol_v2_get_flash_info,
.create_window = protocol_v2_create_window,
.mark_dirty = protocol_v2_mark_dirty,
.erase = protocol_v2_erase,
.flush = protocol_v2_flush,
.close = protocol_v2_close,
.ack = protocol_v1_ack,
};
static const struct protocol_ops *protocol_ops_map[] = {
[0] = NULL,
[1] = &protocol_ops_v1,
[2] = &protocol_ops_v2,
};
int protocol_negotiate_version(struct mbox_context *context,
uint8_t requested)
{
/* Check we support the version requested */
if (requested < API_MIN_VERSION)
return -EINVAL;
context->version = (requested > API_MAX_VERSION) ?
API_MAX_VERSION : requested;
context->protocol = protocol_ops_map[context->version];
return context->version;
}
|
