/* 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 #include #include #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_ready: Number of replenish transactions without doorbell * @replenish_saved: Replenish requests held while disabled * @replenish_backlog: Number of buffers needed to fill hardware queue * @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); u32 replenish_ready; atomic_t replenish_saved; atomic_t replenish_backlog; 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_ */