drivers/net/ethernet/qlogic/qed/qed_roce.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  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
  65 enum qed_rdma_toggle_bit {
  66         QED_RDMA_TOGGLE_BIT_CLEAR = 0,
  67         QED_RDMA_TOGGLE_BIT_SET = 1
  68 };
  69
  70 struct qed_bmap {
  71         unsigned long *bitmap;
  72         u32 max_count;
  73 };
  74
  75 struct 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
  98 struct 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)
 165 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 166 void qed_async_roce_event(struct qed_hwfn *p_hwfn,
 167                           struct event_ring_entry *p_eqe);
 168 void 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);
 173 void 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);
 178 void 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
 189 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
 190 static inline void qed_async_roce_event(struct qed_hwfn *p_hwfn, struct event_ring_entry *p_eqe) {}
 191 static 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) {}
 197 static 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) {}
 203 static 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