1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
  2/*
  3 * Copyright(c) 2017 - 2020 Intel Corporation.
  4 */
  5
  6#ifndef _HFI1_VNIC_H
  7#define _HFI1_VNIC_H
  8#include <rdma/opa_vnic.h>
  9#include "hfi.h"
 10#include "sdma.h"
 11
 12#define HFI1_VNIC_MAX_TXQ     16
 13#define HFI1_VNIC_MAX_PAD     12
 14
 15/* L4 header definitions */
 16#define HFI1_VNIC_L4_HDR_OFFSET  OPA_VNIC_L2_HDR_LEN
 17
 18#define HFI1_VNIC_GET_L4_HDR(data)   \
 19	(*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET)))
 20
 21#define HFI1_VNIC_GET_VESWID(data)   \
 22	(HFI1_VNIC_GET_L4_HDR(data) & 0xFFF)
 23
 24/* Service class */
 25#define HFI1_VNIC_SC_OFFSET_LOW 6
 26#define HFI1_VNIC_SC_OFFSET_HI  7
 27#define HFI1_VNIC_SC_SHIFT      4
 28
 29#define HFI1_VNIC_MAX_QUEUE 16
 30#define HFI1_NUM_VNIC_CTXT 8
 31
 32/**
 33 * struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
 34 * @dd - device data pointer
 35 * @sde - sdma engine
 36 * @vinfo - vnic info pointer
 37 * @wait - iowait structure
 38 * @stx - sdma tx request
 39 * @state - vnic Tx ring SDMA state
 40 * @q_idx - vnic Tx queue index
 41 */
 42struct hfi1_vnic_sdma {
 43	struct hfi1_devdata *dd;
 44	struct sdma_engine  *sde;
 45	struct hfi1_vnic_vport_info *vinfo;
 46	struct iowait wait;
 47	struct sdma_txreq stx;
 48	unsigned int state;
 49	u8 q_idx;
 50	bool pkts_sent;
 51};
 52
 53/**
 54 * struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue
 55 * @idx: queue index
 56 * @vinfo: pointer to vport information
 57 * @netdev: network device
 58 * @napi: netdev napi structure
 59 * @skbq: queue of received socket buffers
 60 */
 61struct hfi1_vnic_rx_queue {
 62	u8                           idx;
 63	struct hfi1_vnic_vport_info *vinfo;
 64	struct net_device           *netdev;
 65	struct napi_struct           napi;
 66};
 67
 68/**
 69 * struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information
 70 * @dd: device data pointer
 71 * @netdev: net device pointer
 72 * @flags: state flags
 73 * @lock: vport lock
 74 * @num_tx_q: number of transmit queues
 75 * @num_rx_q: number of receive queues
 76 * @vesw_id: virtual switch id
 77 * @rxq: Array of receive queues
 78 * @stats: per queue stats
 79 * @sdma: VNIC SDMA structure per TXQ
 80 */
 81struct hfi1_vnic_vport_info {
 82	struct hfi1_devdata *dd;
 83	struct net_device   *netdev;
 84	unsigned long        flags;
 85
 86	/* Lock used around state updates */
 87	struct mutex         lock;
 88
 89	u8  num_tx_q;
 90	u8  num_rx_q;
 91	u16 vesw_id;
 92	struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT];
 93
 94	struct opa_vnic_stats  stats[HFI1_VNIC_MAX_QUEUE];
 95	struct hfi1_vnic_sdma  sdma[HFI1_VNIC_MAX_TXQ];
 96};
 97
 98#define v_dbg(format, arg...) \
 99	netdev_dbg(vinfo->netdev, format, ## arg)
100#define v_err(format, arg...) \
101	netdev_err(vinfo->netdev, format, ## arg)
102#define v_info(format, arg...) \
103	netdev_info(vinfo->netdev, format, ## arg)
104
105/* vnic hfi1 internal functions */
106void hfi1_vnic_setup(struct hfi1_devdata *dd);
107int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
108void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
109
110void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet);
111void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo);
112bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
113				u8 q_idx);
114
115/* vnic rdma netdev operations */
116struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
117				      u32 port_num,
118				      enum rdma_netdev_t type,
119				      const char *name,
120				      unsigned char name_assign_type,
121				      void (*setup)(struct net_device *));
122int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
123		       struct hfi1_vnic_vport_info *vinfo,
124		       struct sk_buff *skb, u64 pbc, u8 plen);
125
126#endif /* _HFI1_VNIC_H */