1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2019-2020 Linaro Ltd. 5 */ 6 #ifndef _IPA_ENDPOINT_H_ 7 #define _IPA_ENDPOINT_H_ 8 9 #include <linux/types.h> 10 #include <linux/workqueue.h> 11 #include <linux/if_ether.h> 12 13 #include "gsi.h" 14 #include "ipa_reg.h" 15 16 struct net_device; 17 struct sk_buff; 18 19 struct ipa; 20 struct ipa_gsi_endpoint_data; 21 22 /* Non-zero granularity of counter used to implement aggregation timeout */ 23 #define IPA_AGGR_GRANULARITY 500 /* microseconds */ 24 25 #define IPA_MTU ETH_DATA_LEN 26 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) */ 38 }; 39 40 #define IPA_ENDPOINT_MAX 32 /* Max supported by driver */ 41 42 /** 43 * struct ipa_endpoint - IPA endpoint information 44 * @channel_id: EP's GSI channel 45 * @evt_ring_id: EP's GSI channel event ring 46 */ 47 struct ipa_endpoint { 48 struct ipa *ipa; 49 enum ipa_seq_type seq_type; 50 enum gsi_ee_id ee_id; 51 u32 channel_id; 52 u32 endpoint_id; 53 bool toward_ipa; 54 const struct ipa_endpoint_config_data *data; 55 56 u32 trans_tre_max; /* maximum descriptors per transaction */ 57 u32 evt_ring_id; 58 59 /* Net device this endpoint is associated with, if any */ 60 struct net_device *netdev; 61 62 /* Receive buffer replenishing for RX endpoints */ 63 bool replenish_enabled; 64 u32 replenish_ready; 65 atomic_t replenish_saved; 66 atomic_t replenish_backlog; 67 struct delayed_work replenish_work; /* global wq */ 68 }; 69 70 void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa); 71 72 void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable); 73 74 int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa); 75 76 int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb); 77 78 void ipa_endpoint_exit_one(struct ipa_endpoint *endpoint); 79 80 int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint); 81 void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint); 82 83 void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint); 84 void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint); 85 86 void ipa_endpoint_suspend(struct ipa *ipa); 87 void ipa_endpoint_resume(struct ipa *ipa); 88 89 void ipa_endpoint_setup(struct ipa *ipa); 90 void ipa_endpoint_teardown(struct ipa *ipa); 91 92 int ipa_endpoint_config(struct ipa *ipa); 93 void ipa_endpoint_deconfig(struct ipa *ipa); 94 95 void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id); 96 void ipa_endpoint_default_route_clear(struct ipa *ipa); 97 98 u32 ipa_endpoint_init(struct ipa *ipa, u32 count, 99 const struct ipa_gsi_endpoint_data *data); 100 void ipa_endpoint_exit(struct ipa *ipa); 101 102 void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa, 103 struct gsi_trans *trans); 104 void ipa_endpoint_trans_release(struct ipa_endpoint *ipa, 105 struct gsi_trans *trans); 106 107 #endif /* _IPA_ENDPOINT_H_ */ 108