1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2019-2020 Linaro Ltd.
6 #ifndef _IPA_ENDPOINT_H_
7 #define _IPA_ENDPOINT_H_
9 #include <linux/types.h>
10 #include <linux/workqueue.h>
11 #include <linux/if_ether.h>
20 struct ipa_gsi_endpoint_data;
22 /* Non-zero granularity of counter used to implement aggregation timeout */
23 #define IPA_AGGR_GRANULARITY 500 /* microseconds */
25 #define IPA_MTU ETH_DATA_LEN
27 enum ipa_endpoint_name {
28 IPA_ENDPOINT_AP_MODEM_TX = 0,
29 IPA_ENDPOINT_MODEM_LAN_TX,
30 IPA_ENDPOINT_MODEM_COMMAND_TX,
31 IPA_ENDPOINT_AP_COMMAND_TX,
32 IPA_ENDPOINT_MODEM_AP_TX,
33 IPA_ENDPOINT_AP_LAN_RX,
34 IPA_ENDPOINT_AP_MODEM_RX,
35 IPA_ENDPOINT_MODEM_AP_RX,
36 IPA_ENDPOINT_MODEM_LAN_RX,
37 IPA_ENDPOINT_COUNT, /* Number of names (not an index) */
40 #define IPA_ENDPOINT_MAX 32 /* Max supported by driver */
43 * enum ipa_replenish_flag: RX buffer replenish flags
45 * @IPA_REPLENISH_ENABLED: Whether receive buffer replenishing is enabled
46 * @IPA_REPLENISH_ACTIVE: Whether replenishing is underway
47 * @IPA_REPLENISH_COUNT: Number of defined replenish flags
49 enum ipa_replenish_flag {
50 IPA_REPLENISH_ENABLED,
52 IPA_REPLENISH_COUNT, /* Number of flags (must be last) */
56 * struct ipa_endpoint - IPA endpoint information
57 * @channel_id: EP's GSI channel
58 * @evt_ring_id: EP's GSI channel event ring
62 enum ipa_seq_type seq_type;
67 const struct ipa_endpoint_config_data *data;
69 u32 trans_tre_max; /* maximum descriptors per transaction */
72 /* Net device this endpoint is associated with, if any */
73 struct net_device *netdev;
75 /* Receive buffer replenishing for RX endpoints */
76 DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT);
78 atomic_t replenish_saved;
79 atomic_t replenish_backlog;
80 struct delayed_work replenish_work; /* global wq */
83 void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa);
85 void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable);
87 int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa);
89 int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb);
91 void ipa_endpoint_exit_one(struct ipa_endpoint *endpoint);
93 int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint);
94 void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint);
96 void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint);
97 void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint);
99 void ipa_endpoint_suspend(struct ipa *ipa);
100 void ipa_endpoint_resume(struct ipa *ipa);
102 void ipa_endpoint_setup(struct ipa *ipa);
103 void ipa_endpoint_teardown(struct ipa *ipa);
105 int ipa_endpoint_config(struct ipa *ipa);
106 void ipa_endpoint_deconfig(struct ipa *ipa);
108 void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id);
109 void ipa_endpoint_default_route_clear(struct ipa *ipa);
111 u32 ipa_endpoint_init(struct ipa *ipa, u32 count,
112 const struct ipa_gsi_endpoint_data *data);
113 void ipa_endpoint_exit(struct ipa *ipa);
115 void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa,
116 struct gsi_trans *trans);
117 void ipa_endpoint_trans_release(struct ipa_endpoint *ipa,
118 struct gsi_trans *trans);
120 #endif /* _IPA_ENDPOINT_H_ */