drivers/net/ethernet/qlogic/qed/qed_rdma.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_RDMA_H
  33 #define _QED_RDMA_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_rdma_if.h>
  42 #include "qed.h"
  43 #include "qed_dev_api.h"
  44 #include "qed_hsi.h"
  45 #include "qed_iwarp.h"
  46 #include "qed_roce.h"
  47
  48 #define QED_RDMA_MAX_FMR                    (RDMA_MAX_TIDS)
  49 #define QED_RDMA_MAX_P_KEY                  (1)
  50 #define QED_RDMA_MAX_WQE                    (0x7FFF)
  51 #define QED_RDMA_MAX_SRQ_WQE_ELEM           (0x7FFF)
  52 #define QED_RDMA_PAGE_SIZE_CAPS             (0xFFFFF000)
  53 #define QED_RDMA_ACK_DELAY                  (15)
  54 #define QED_RDMA_MAX_MR_SIZE                (0x10000000000ULL)
  55 #define QED_RDMA_MAX_CQS                    (RDMA_MAX_CQS)
  56 #define QED_RDMA_MAX_MRS                    (RDMA_MAX_TIDS)
  57 /* Add 1 for header element */
  58 #define QED_RDMA_MAX_SRQ_ELEM_PER_WQE       (RDMA_MAX_SGE_PER_RQ_WQE + 1)
  59 #define QED_RDMA_MAX_SGE_PER_SRQ_WQE        (RDMA_MAX_SGE_PER_RQ_WQE)
  60 #define QED_RDMA_SRQ_WQE_ELEM_SIZE          (16)
  61 #define QED_RDMA_MAX_SRQS                   (32 * 1024)
  62
  63 #define QED_RDMA_MAX_CQE_32_BIT             (0x7FFFFFFF - 1)
  64 #define QED_RDMA_MAX_CQE_16_BIT             (0x7FFF - 1)
  65
  66 enum qed_rdma_toggle_bit {
  67         QED_RDMA_TOGGLE_BIT_CLEAR = 0,
  68         QED_RDMA_TOGGLE_BIT_SET = 1
  69 };
  70
  71 #define QED_RDMA_MAX_BMAP_NAME  (10)
  72 struct qed_bmap {
  73         unsigned long *bitmap;
  74         u32 max_count;
  75         char name[QED_RDMA_MAX_BMAP_NAME];
  76 };
  77
  78 struct qed_rdma_info {
  79         /* spin lock to protect bitmaps */
  80         spinlock_t lock;
  81
  82         struct qed_bmap cq_map;
  83         struct qed_bmap pd_map;
  84         struct qed_bmap tid_map;
  85         struct qed_bmap qp_map;
  86         struct qed_bmap srq_map;
  87         struct qed_bmap cid_map;
  88         struct qed_bmap tcp_cid_map;
  89         struct qed_bmap real_cid_map;
  90         struct qed_bmap dpi_map;
  91         struct qed_bmap toggle_bits;
  92         struct qed_rdma_events events;
  93         struct qed_rdma_device *dev;
  94         struct qed_rdma_port *port;
  95         u32 last_tid;
  96         u8 num_cnqs;
  97         u32 num_qps;
  98         u32 num_mrs;
  99         u16 queue_zone_base;
 100         u16 max_queue_zones;
 101         enum protocol_type proto;
 102         struct qed_iwarp_info iwarp;
 103 };
 104
 105 struct qed_rdma_qp {
 106         struct regpair qp_handle;
 107         struct regpair qp_handle_async;
 108         u32 qpid;
 109         u16 icid;
 110         enum qed_roce_qp_state cur_state;
 111         enum qed_iwarp_qp_state iwarp_state;
 112         bool use_srq;
 113         bool signal_all;
 114         bool fmr_and_reserved_lkey;
 115
 116         bool incoming_rdma_read_en;
 117         bool incoming_rdma_write_en;
 118         bool incoming_atomic_en;
 119         bool e2e_flow_control_en;
 120
 121         u16 pd;
 122         u16 pkey;
 123         u32 dest_qp;
 124         u16 mtu;
 125         u16 srq_id;
 126         u8 traffic_class_tos;
 127         u8 hop_limit_ttl;
 128         u16 dpi;
 129         u32 flow_label;
 130         bool lb_indication;
 131         u16 vlan_id;
 132         u32 ack_timeout;
 133         u8 retry_cnt;
 134         u8 rnr_retry_cnt;
 135         u8 min_rnr_nak_timer;
 136         bool sqd_async;
 137         union qed_gid sgid;
 138         union qed_gid dgid;
 139         enum roce_mode roce_mode;
 140         u16 udp_src_port;
 141         u8 stats_queue;
 142
 143         /* requeseter */
 144         u8 max_rd_atomic_req;
 145         u32 sq_psn;
 146         u16 sq_cq_id;
 147         u16 sq_num_pages;
 148         dma_addr_t sq_pbl_ptr;
 149         void *orq;
 150         dma_addr_t orq_phys_addr;
 151         u8 orq_num_pages;
 152         bool req_offloaded;
 153
 154         /* responder */
 155         u8 max_rd_atomic_resp;
 156         u32 rq_psn;
 157         u16 rq_cq_id;
 158         u16 rq_num_pages;
 159         dma_addr_t rq_pbl_ptr;
 160         void *irq;
 161         dma_addr_t irq_phys_addr;
 162         u8 irq_num_pages;
 163         bool resp_offloaded;
 164         u32 cq_prod;
 165
 166         u8 remote_mac_addr[6];
 167         u8 local_mac_addr[6];
 168
 169         void *shared_queue;
 170         dma_addr_t shared_queue_phys_addr;
 171         struct qed_iwarp_ep *ep;
 172 };
 173
 174 #if IS_ENABLED(CONFIG_QED_RDMA)
 175 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 176 void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 177 #else
 178 static inline void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
 179 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn,
 180                                     struct qed_ptt *p_ptt) {}
 181 #endif
 182
 183 int
 184 qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
 185                     struct qed_bmap *bmap, u32 max_count, char *name);
 186
 187 void
 188 qed_rdma_bmap_free(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, bool check);
 189
 190 int
 191 qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn,
 192                        struct qed_bmap *bmap, u32 *id_num);
 193
 194 void
 195 qed_bmap_set_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 196
 197 void
 198 qed_bmap_release_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 199
 200 int
 201 qed_bmap_test_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 202
 203 void qed_rdma_set_fw_mac(u16 *p_fw_mac, u8 *p_qed_mac);
 204
 205 bool qed_rdma_allocated_qps(struct qed_hwfn *p_hwfn);
 206 #endif