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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2019-2020 Linaro Ltd.
*/
#ifndef _IPA_ENDPOINT_H_
#define _IPA_ENDPOINT_H_
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/if_ether.h>
#include "gsi.h"
#include "ipa_reg.h"
struct net_device;
struct sk_buff;
struct ipa;
struct ipa_gsi_endpoint_data;
/* Non-zero granularity of counter used to implement aggregation timeout */
#define IPA_AGGR_GRANULARITY 500 /* microseconds */
#define IPA_MTU ETH_DATA_LEN
enum ipa_endpoint_name {
IPA_ENDPOINT_AP_COMMAND_TX,
IPA_ENDPOINT_AP_LAN_RX,
IPA_ENDPOINT_AP_MODEM_TX,
IPA_ENDPOINT_AP_MODEM_RX,
IPA_ENDPOINT_MODEM_COMMAND_TX,
IPA_ENDPOINT_MODEM_LAN_TX,
IPA_ENDPOINT_MODEM_LAN_RX,
IPA_ENDPOINT_MODEM_AP_TX,
IPA_ENDPOINT_MODEM_AP_RX,
IPA_ENDPOINT_MODEM_DL_NLO_TX,
IPA_ENDPOINT_COUNT, /* Number of names (not an index) */
};
#define IPA_ENDPOINT_MAX 32 /* Max supported by driver */
/**
* enum ipa_replenish_flag: RX buffer replenish flags
*
* @IPA_REPLENISH_ENABLED: Whether receive buffer replenishing is enabled
* @IPA_REPLENISH_ACTIVE: Whether replenishing is underway
* @IPA_REPLENISH_COUNT: Number of defined replenish flags
*/
enum ipa_replenish_flag {
IPA_REPLENISH_ENABLED,
IPA_REPLENISH_ACTIVE,
IPA_REPLENISH_COUNT, /* Number of flags (must be last) */
};
/**
* struct ipa_endpoint - IPA endpoint information
* @ipa: IPA pointer
* @ee_id: Execution environmnent endpoint is associated with
* @channel_id: GSI channel used by the endpoint
* @endpoint_id: IPA endpoint number
* @toward_ipa: Endpoint direction (true = TX, false = RX)
* @data: Endpoint configuration data
* @trans_tre_max: Maximum number of TRE descriptors per transaction
* @evt_ring_id: GSI event ring used by the endpoint
* @netdev: Network device pointer, if endpoint uses one
* @replenish_flags: Replenishing state flags
* @replenish_count: Total number of replenish transactions committed
* @replenish_work: Work item used for repeated replenish failures
*/
struct ipa_endpoint {
struct ipa *ipa;
enum gsi_ee_id ee_id;
u32 channel_id;
u32 endpoint_id;
bool toward_ipa;
const struct ipa_endpoint_config_data *data;
u32 trans_tre_max;
u32 evt_ring_id;
/* Net device this endpoint is associated with, if any */
struct net_device *netdev;
/* Receive buffer replenishing for RX endpoints */
DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT);
u64 replenish_count;
struct delayed_work replenish_work; /* global wq */
};
void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa);
void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable);
int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa);
int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb);
int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint);
void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint);
void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint);
void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint);
void ipa_endpoint_suspend(struct ipa *ipa);
void ipa_endpoint_resume(struct ipa *ipa);
void ipa_endpoint_setup(struct ipa *ipa);
void ipa_endpoint_teardown(struct ipa *ipa);
int ipa_endpoint_config(struct ipa *ipa);
void ipa_endpoint_deconfig(struct ipa *ipa);
void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id);
void ipa_endpoint_default_route_clear(struct ipa *ipa);
u32 ipa_endpoint_init(struct ipa *ipa, u32 count,
const struct ipa_gsi_endpoint_data *data);
void ipa_endpoint_exit(struct ipa *ipa);
void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa,
struct gsi_trans *trans);
void ipa_endpoint_trans_release(struct ipa_endpoint *ipa,
struct gsi_trans *trans);
#endif /* _IPA_ENDPOINT_H_ */
|
