LXR linux/drivers/net/ethernet/qlogic/qed/qed

   1/* QLogic qed NIC Driver
   2 * Copyright (c) 2015-2016  QLogic Corporation
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and /or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#ifndef _QED_ROCE_H
  33#define _QED_ROCE_H
  34#include <linux/types.h>
  35#include <linux/bitops.h>
  36#include <linux/kernel.h>
  37#include <linux/list.h>
  38#include <linux/slab.h>
  39#include <linux/spinlock.h>
  40#include <linux/qed/qed_if.h>
  41#include <linux/qed/qed_roce_if.h>
  42#include "qed.h"
  43#include "qed_dev_api.h"
  44#include "qed_hsi.h"
  45#include "qed_ll2.h"
  46
  47#define QED_RDMA_MAX_FMR                    (RDMA_MAX_TIDS)
  48#define QED_RDMA_MAX_P_KEY                  (1)
  49#define QED_RDMA_MAX_WQE                    (0x7FFF)
  50#define QED_RDMA_MAX_SRQ_WQE_ELEM           (0x7FFF)
  51#define QED_RDMA_PAGE_SIZE_CAPS             (0xFFFFF000)
  52#define QED_RDMA_ACK_DELAY                  (15)
  53#define QED_RDMA_MAX_MR_SIZE                (0x10000000000ULL)
  54#define QED_RDMA_MAX_CQS                    (RDMA_MAX_CQS)
  55#define QED_RDMA_MAX_MRS                    (RDMA_MAX_TIDS)
  56/* Add 1 for header element */
  57#define QED_RDMA_MAX_SRQ_ELEM_PER_WQE       (RDMA_MAX_SGE_PER_RQ_WQE + 1)
  58#define QED_RDMA_MAX_SGE_PER_SRQ_WQE        (RDMA_MAX_SGE_PER_RQ_WQE)
  59#define QED_RDMA_SRQ_WQE_ELEM_SIZE          (16)
  60#define QED_RDMA_MAX_SRQS                   (32 * 1024)
  61
  62#define QED_RDMA_MAX_CQE_32_BIT             (0x7FFFFFFF - 1)
  63#define QED_RDMA_MAX_CQE_16_BIT             (0x7FFF - 1)
  64
  65enum qed_rdma_toggle_bit {
  66        QED_RDMA_TOGGLE_BIT_CLEAR = 0,
  67        QED_RDMA_TOGGLE_BIT_SET = 1
  68};
  69
  70struct qed_bmap {
  71        unsigned long *bitmap;
  72        u32 max_count;
  73};
  74
  75struct qed_rdma_info {
  76        /* spin lock to protect bitmaps */
  77        spinlock_t lock;
  78
  79        struct qed_bmap cq_map;
  80        struct qed_bmap pd_map;
  81        struct qed_bmap tid_map;
  82        struct qed_bmap qp_map;
  83        struct qed_bmap srq_map;
  84        struct qed_bmap cid_map;
  85        struct qed_bmap dpi_map;
  86        struct qed_bmap toggle_bits;
  87        struct qed_rdma_events events;
  88        struct qed_rdma_device *dev;
  89        struct qed_rdma_port *port;
  90        u32 last_tid;
  91        u8 num_cnqs;
  92        u32 num_qps;
  93        u32 num_mrs;
  94        u16 queue_zone_base;
  95        enum protocol_type proto;
  96};
  97
  98struct qed_rdma_qp {
  99        struct regpair qp_handle;
 100        struct regpair qp_handle_async;
 101        u32 qpid;
 102        u16 icid;
 103        enum qed_roce_qp_state cur_state;
 104        bool use_srq;
 105        bool signal_all;
 106        bool fmr_and_reserved_lkey;
 107
 108        bool incoming_rdma_read_en;
 109        bool incoming_rdma_write_en;
 110        bool incoming_atomic_en;
 111        bool e2e_flow_control_en;
 112
 113        u16 pd;
 114        u16 pkey;
 115        u32 dest_qp;
 116        u16 mtu;
 117        u16 srq_id;
 118        u8 traffic_class_tos;
 119        u8 hop_limit_ttl;
 120        u16 dpi;
 121        u32 flow_label;
 122        bool lb_indication;
 123        u16 vlan_id;
 124        u32 ack_timeout;
 125        u8 retry_cnt;
 126        u8 rnr_retry_cnt;
 127        u8 min_rnr_nak_timer;
 128        bool sqd_async;
 129        union qed_gid sgid;
 130        union qed_gid dgid;
 131        enum roce_mode roce_mode;
 132        u16 udp_src_port;
 133        u8 stats_queue;
 134
 135        /* requeseter */
 136        u8 max_rd_atomic_req;
 137        u32 sq_psn;
 138        u16 sq_cq_id;
 139        u16 sq_num_pages;
 140        dma_addr_t sq_pbl_ptr;
 141        void *orq;
 142        dma_addr_t orq_phys_addr;
 143        u8 orq_num_pages;
 144        bool req_offloaded;
 145
 146        /* responder */
 147        u8 max_rd_atomic_resp;
 148        u32 rq_psn;
 149        u16 rq_cq_id;
 150        u16 rq_num_pages;
 151        dma_addr_t rq_pbl_ptr;
 152        void *irq;
 153        dma_addr_t irq_phys_addr;
 154        u8 irq_num_pages;
 155        bool resp_offloaded;
 156
 157        u8 remote_mac_addr[6];
 158        u8 local_mac_addr[6];
 159
 160        void *shared_queue;
 161        dma_addr_t shared_queue_phys_addr;
 162};
 163
 164#if IS_ENABLED(CONFIG_QED_RDMA)
 165void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 166void qed_async_roce_event(struct qed_hwfn *p_hwfn,
 167                          struct event_ring_entry *p_eqe);
 168void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
 169                                     u8 connection_handle,
 170                                     void *cookie,
 171                                     dma_addr_t first_frag_addr,
 172                                     bool b_last_fragment, bool b_last_packet);
 173void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
 174                                    u8 connection_handle,
 175                                    void *cookie,
 176                                    dma_addr_t first_frag_addr,
 177                                    bool b_last_fragment, bool b_last_packet);
 178void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
 179                                     u8 connection_handle,
 180                                     void *cookie,
 181                                     dma_addr_t rx_buf_addr,
 182                                     u16 data_length,
 183                                     u8 data_length_error,
 184                                     u16 parse_flags,
 185                                     u16 vlan,
 186                                     u32 src_mac_addr_hi,
 187                                     u16 src_mac_addr_lo, bool b_last_packet);
 188#else
 189static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
 190static inline void qed_async_roce_event(struct qed_hwfn *p_hwfn, struct event_ring_entry *p_eqe) {}
 191static inline void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
 192                                                   u8 connection_handle,
 193                                                   void *cookie,
 194                                                   dma_addr_t first_frag_addr,
 195                                                   bool b_last_fragment,
 196                                                   bool b_last_packet) {}
 197static inline void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
 198                                                  u8 connection_handle,
 199                                                  void *cookie,
 200                                                  dma_addr_t first_frag_addr,
 201                                                  bool b_last_fragment,
 202                                                  bool b_last_packet) {}
 203static inline void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
 204                                                   u8 connection_handle,
 205                                                   void *cookie,
 206                                                   dma_addr_t rx_buf_addr,
 207                                                   u16 data_length,
 208                                                   u8 data_length_error,
 209                                                   u16 parse_flags,
 210                                                   u16 vlan,
 211                                                   u32 src_mac_addr_hi,
 212                                                   u16 src_mac_addr_lo,
 213                                                   bool b_last_packet) {}
 214#endif
 215#endif
 216