1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. 4*4882a593Smuzhiyun * Copyright (C) 2019-2020 Linaro Ltd. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef _IPA_ENDPOINT_H_ 7*4882a593Smuzhiyun #define _IPA_ENDPOINT_H_ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/types.h> 10*4882a593Smuzhiyun #include <linux/workqueue.h> 11*4882a593Smuzhiyun #include <linux/if_ether.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include "gsi.h" 14*4882a593Smuzhiyun #include "ipa_reg.h" 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct net_device; 17*4882a593Smuzhiyun struct sk_buff; 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun struct ipa; 20*4882a593Smuzhiyun struct ipa_gsi_endpoint_data; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* Non-zero granularity of counter used to implement aggregation timeout */ 23*4882a593Smuzhiyun #define IPA_AGGR_GRANULARITY 500 /* microseconds */ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define IPA_MTU ETH_DATA_LEN 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun enum ipa_endpoint_name { 28*4882a593Smuzhiyun IPA_ENDPOINT_AP_MODEM_TX = 0, 29*4882a593Smuzhiyun IPA_ENDPOINT_MODEM_LAN_TX, 30*4882a593Smuzhiyun IPA_ENDPOINT_MODEM_COMMAND_TX, 31*4882a593Smuzhiyun IPA_ENDPOINT_AP_COMMAND_TX, 32*4882a593Smuzhiyun IPA_ENDPOINT_MODEM_AP_TX, 33*4882a593Smuzhiyun IPA_ENDPOINT_AP_LAN_RX, 34*4882a593Smuzhiyun IPA_ENDPOINT_AP_MODEM_RX, 35*4882a593Smuzhiyun IPA_ENDPOINT_MODEM_AP_RX, 36*4882a593Smuzhiyun IPA_ENDPOINT_MODEM_LAN_RX, 37*4882a593Smuzhiyun IPA_ENDPOINT_COUNT, /* Number of names (not an index) */ 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #define IPA_ENDPOINT_MAX 32 /* Max supported by driver */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /** 43*4882a593Smuzhiyun * enum ipa_replenish_flag: RX buffer replenish flags 44*4882a593Smuzhiyun * 45*4882a593Smuzhiyun * @IPA_REPLENISH_ENABLED: Whether receive buffer replenishing is enabled 46*4882a593Smuzhiyun * @IPA_REPLENISH_ACTIVE: Whether replenishing is underway 47*4882a593Smuzhiyun * @IPA_REPLENISH_COUNT: Number of defined replenish flags 48*4882a593Smuzhiyun */ 49*4882a593Smuzhiyun enum ipa_replenish_flag { 50*4882a593Smuzhiyun IPA_REPLENISH_ENABLED, 51*4882a593Smuzhiyun IPA_REPLENISH_ACTIVE, 52*4882a593Smuzhiyun IPA_REPLENISH_COUNT, /* Number of flags (must be last) */ 53*4882a593Smuzhiyun }; 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun /** 56*4882a593Smuzhiyun * struct ipa_endpoint - IPA endpoint information 57*4882a593Smuzhiyun * @channel_id: EP's GSI channel 58*4882a593Smuzhiyun * @evt_ring_id: EP's GSI channel event ring 59*4882a593Smuzhiyun */ 60*4882a593Smuzhiyun struct ipa_endpoint { 61*4882a593Smuzhiyun struct ipa *ipa; 62*4882a593Smuzhiyun enum ipa_seq_type seq_type; 63*4882a593Smuzhiyun enum gsi_ee_id ee_id; 64*4882a593Smuzhiyun u32 channel_id; 65*4882a593Smuzhiyun u32 endpoint_id; 66*4882a593Smuzhiyun bool toward_ipa; 67*4882a593Smuzhiyun const struct ipa_endpoint_config_data *data; 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun u32 trans_tre_max; /* maximum descriptors per transaction */ 70*4882a593Smuzhiyun u32 evt_ring_id; 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* Net device this endpoint is associated with, if any */ 73*4882a593Smuzhiyun struct net_device *netdev; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /* Receive buffer replenishing for RX endpoints */ 76*4882a593Smuzhiyun DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT); 77*4882a593Smuzhiyun u32 replenish_ready; 78*4882a593Smuzhiyun atomic_t replenish_saved; 79*4882a593Smuzhiyun atomic_t replenish_backlog; 80*4882a593Smuzhiyun struct delayed_work replenish_work; /* global wq */ 81*4882a593Smuzhiyun }; 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa); 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable); 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa); 88*4882a593Smuzhiyun 89*4882a593Smuzhiyun int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb); 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun void ipa_endpoint_exit_one(struct ipa_endpoint *endpoint); 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint); 94*4882a593Smuzhiyun void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint); 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint); 97*4882a593Smuzhiyun void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint); 98*4882a593Smuzhiyun 99*4882a593Smuzhiyun void ipa_endpoint_suspend(struct ipa *ipa); 100*4882a593Smuzhiyun void ipa_endpoint_resume(struct ipa *ipa); 101*4882a593Smuzhiyun 102*4882a593Smuzhiyun void ipa_endpoint_setup(struct ipa *ipa); 103*4882a593Smuzhiyun void ipa_endpoint_teardown(struct ipa *ipa); 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun int ipa_endpoint_config(struct ipa *ipa); 106*4882a593Smuzhiyun void ipa_endpoint_deconfig(struct ipa *ipa); 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id); 109*4882a593Smuzhiyun void ipa_endpoint_default_route_clear(struct ipa *ipa); 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun u32 ipa_endpoint_init(struct ipa *ipa, u32 count, 112*4882a593Smuzhiyun const struct ipa_gsi_endpoint_data *data); 113*4882a593Smuzhiyun void ipa_endpoint_exit(struct ipa *ipa); 114*4882a593Smuzhiyun 115*4882a593Smuzhiyun void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa, 116*4882a593Smuzhiyun struct gsi_trans *trans); 117*4882a593Smuzhiyun void ipa_endpoint_trans_release(struct ipa_endpoint *ipa, 118*4882a593Smuzhiyun struct gsi_trans *trans); 119*4882a593Smuzhiyun 120*4882a593Smuzhiyun #endif /* _IPA_ENDPOINT_H_ */ 121