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117 lines
3.5 KiB
117 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
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* Copyright (C) 2019-2020 Linaro Ltd. |
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*/ |
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#ifndef _IPA_ENDPOINT_H_ |
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#define _IPA_ENDPOINT_H_ |
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#include <linux/types.h> |
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#include <linux/workqueue.h> |
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#include <linux/if_ether.h> |
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#include "gsi.h" |
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#include "ipa_reg.h" |
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struct net_device; |
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struct sk_buff; |
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struct ipa; |
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struct ipa_gsi_endpoint_data; |
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/* Non-zero granularity of counter used to implement aggregation timeout */ |
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#define IPA_AGGR_GRANULARITY 500 /* microseconds */ |
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#define IPA_MTU ETH_DATA_LEN |
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enum ipa_endpoint_name { |
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IPA_ENDPOINT_AP_COMMAND_TX, |
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IPA_ENDPOINT_AP_LAN_RX, |
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IPA_ENDPOINT_AP_MODEM_TX, |
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IPA_ENDPOINT_AP_MODEM_RX, |
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IPA_ENDPOINT_MODEM_COMMAND_TX, |
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IPA_ENDPOINT_MODEM_LAN_TX, |
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IPA_ENDPOINT_MODEM_LAN_RX, |
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IPA_ENDPOINT_MODEM_AP_TX, |
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IPA_ENDPOINT_MODEM_AP_RX, |
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IPA_ENDPOINT_MODEM_DL_NLO_TX, |
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IPA_ENDPOINT_COUNT, /* Number of names (not an index) */ |
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}; |
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#define IPA_ENDPOINT_MAX 32 /* Max supported by driver */ |
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/** |
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* struct ipa_endpoint - IPA endpoint information |
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* @ipa: IPA pointer |
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* @ee_id: Execution environmnent endpoint is associated with |
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* @channel_id: GSI channel used by the endpoint |
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* @endpoint_id: IPA endpoint number |
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* @toward_ipa: Endpoint direction (true = TX, false = RX) |
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* @data: Endpoint configuration data |
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* @trans_tre_max: Maximum number of TRE descriptors per transaction |
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* @evt_ring_id: GSI event ring used by the endpoint |
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* @netdev: Network device pointer, if endpoint uses one |
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* @replenish_enabled: Whether receive buffer replenishing is enabled |
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* @replenish_ready: Number of replenish transactions without doorbell |
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* @replenish_saved: Replenish requests held while disabled |
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* @replenish_backlog: Number of buffers needed to fill hardware queue |
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* @replenish_work: Work item used for repeated replenish failures |
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*/ |
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struct ipa_endpoint { |
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struct ipa *ipa; |
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enum gsi_ee_id ee_id; |
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u32 channel_id; |
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u32 endpoint_id; |
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bool toward_ipa; |
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const struct ipa_endpoint_config_data *data; |
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u32 trans_tre_max; |
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u32 evt_ring_id; |
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/* Net device this endpoint is associated with, if any */ |
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struct net_device *netdev; |
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/* Receive buffer replenishing for RX endpoints */ |
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bool replenish_enabled; |
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u32 replenish_ready; |
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atomic_t replenish_saved; |
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atomic_t replenish_backlog; |
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struct delayed_work replenish_work; /* global wq */ |
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}; |
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void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa); |
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void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable); |
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int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa); |
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int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb); |
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int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint); |
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void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint); |
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void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint); |
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void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint); |
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void ipa_endpoint_suspend(struct ipa *ipa); |
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void ipa_endpoint_resume(struct ipa *ipa); |
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void ipa_endpoint_setup(struct ipa *ipa); |
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void ipa_endpoint_teardown(struct ipa *ipa); |
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int ipa_endpoint_config(struct ipa *ipa); |
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void ipa_endpoint_deconfig(struct ipa *ipa); |
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void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id); |
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void ipa_endpoint_default_route_clear(struct ipa *ipa); |
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u32 ipa_endpoint_init(struct ipa *ipa, u32 count, |
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const struct ipa_gsi_endpoint_data *data); |
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void ipa_endpoint_exit(struct ipa *ipa); |
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void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa, |
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struct gsi_trans *trans); |
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void ipa_endpoint_trans_release(struct ipa_endpoint *ipa, |
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struct gsi_trans *trans); |
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#endif /* _IPA_ENDPOINT_H_ */
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