131 lines
3.9 KiB
C
131 lines
3.9 KiB
C
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/* 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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* enum ipa_replenish_flag: RX buffer replenish flags
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*
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* @IPA_REPLENISH_ENABLED: Whether receive buffer replenishing is enabled
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* @IPA_REPLENISH_ACTIVE: Whether replenishing is underway
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* @IPA_REPLENISH_COUNT: Number of defined replenish flags
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*/
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enum ipa_replenish_flag {
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IPA_REPLENISH_ENABLED,
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IPA_REPLENISH_ACTIVE,
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IPA_REPLENISH_COUNT, /* Number of flags (must be last) */
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};
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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_flags: Replenishing state flags
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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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DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT);
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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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