LXR linux/drivers/net/ipa/ipa

   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
  16struct net_device;
  17struct sk_buff;
  18
  19struct ipa;
  20struct 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
  27enum 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 */
  47struct 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
  70void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa);
  71
  72void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable);
  73
  74int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa);
  75
  76int ipa_endpoint_skb_tx(struct ipa_endpoint *endpoint, struct sk_buff *skb);
  77
  78void ipa_endpoint_exit_one(struct ipa_endpoint *endpoint);
  79
  80int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint);
  81void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint);
  82
  83void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint);
  84void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint);
  85
  86void ipa_endpoint_suspend(struct ipa *ipa);
  87void ipa_endpoint_resume(struct ipa *ipa);
  88
  89void ipa_endpoint_setup(struct ipa *ipa);
  90void ipa_endpoint_teardown(struct ipa *ipa);
  91
  92int ipa_endpoint_config(struct ipa *ipa);
  93void ipa_endpoint_deconfig(struct ipa *ipa);
  94
  95void ipa_endpoint_default_route_set(struct ipa *ipa, u32 endpoint_id);
  96void ipa_endpoint_default_route_clear(struct ipa *ipa);
  97
  98u32 ipa_endpoint_init(struct ipa *ipa, u32 count,
  99                      const struct ipa_gsi_endpoint_data *data);
 100void ipa_endpoint_exit(struct ipa *ipa);
 101
 102void ipa_endpoint_trans_complete(struct ipa_endpoint *ipa,
 103                                 struct gsi_trans *trans);
 104void ipa_endpoint_trans_release(struct ipa_endpoint *ipa,
 105                                struct gsi_trans *trans);
 106
 107#endif /* _IPA_ENDPOINT_H_ */
 108